JP4217448B2

JP4217448B2 - Bottle cap

Info

Publication number: JP4217448B2
Application number: JP2002272185A
Authority: JP
Inventors: 正行牧田
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-09-18
Filing date: 2002-09-18
Publication date: 2009-02-04
Anticipated expiration: 2022-09-18
Also published as: JP2004106888A

Description

【０００１】
【発明の属する技術分野】
本発明は、粉末状又は液状の原料を収容する原料収容部を有し、開栓操作に伴い原料収容部の底蓋を脱落させて原料をボトル内に放出するボトルキャップに関する。
【０００２】
【従来の技術】
従来、この種のボトルキャップとして、例えば特許文献１（実公昭４４−１２９５７号公報）及び特許文献２（特許第３２８１７３０号公報）に記載のものがある。
【０００３】
特許文献１に記載のものは、可撓性樹脂からなる円筒状のパッキング（外筒）と、原料収容部となる筒体（内筒）を有する蓋（キャップ）と、環状の突縁（鍔部）を有する押込栓（底蓋）とからなり、パッキングをボトルの口部内に嵌挿するとともに、押込栓を筒体の下面開口内に嵌挿して該筒体を密閉し、蓋をボトルの口部に螺合させて該口部を閉じる構造になっている。蓋の筒体の下部は漏斗状にすぼまっていて、蓋でボトルの口部を完全に閉じたとき、筒体の下端が押込栓の環状突縁と係合するようになっている。蓋をボトルの口部に対して開く方向に回すと、筒体は蓋と共に上昇するが、押込栓はパッキングの下端で上昇を規制されるため、筒体から脱落し、筒体内に収容した粉末がボトル内に放出される。
【０００４】
また、特許文献２のものは、ボトルの口頚部外周に下部を抜け出し不能に嵌着固定した嵌合筒部の中途内周にフランジを延設し、該フランジ内周より支持筒部を一体に垂設してなる連結部材（外筒）と、頂壁の裏面中央部より収納筒部（内筒）を垂設したキャップと、その収納筒部下端に液密且つ離脱可能に嵌着させてその上部を原料収納部とする皿状の底蓋とを備え、また連結部材（外筒）の嵌合筒部の外周下部に第１螺条を周設するとともに、該第１螺条と空転域を介して上方に第２螺条を周設し、キャップの周壁内周下部に上記第１螺条と螺合する螺条を周設しており、キャップを連結部材（外筒）に対して開く方向に回して上昇させると、キャップの螺条が連結部材（外筒）の第１螺条から外れて空転する前に、底蓋の周縁上面が支持筒部の下端に係止されて脱落するようになっている。底蓋は、その底壁上面の周縁部に、キャップの収納筒部の内周下端部に嵌合するシール筒部を立設して液密性を保持するようになっている。
【０００５】
【特許文献１】
実公昭４４−１２９５７号公報（第１頁、第１図、第２図）
【特許文献２】
特許第３２８１７３０号公報（第２頁、第１図、第３図）
【０００６】
【発明が解決しようとする課題】
しかし、特許文献１に記載のものは、押込栓（底蓋）を原料収容部である筒体（内筒）に押し込んでいるものの、これらの間の気密性を確保することは難しく、ボトル内の湿気を含む空気が原料収容部である筒体（内筒）内に浸入し、粉末等の原料が酸素や湿気と接触することにより変質や腐敗等を招く。また、押込栓の環状の突縁（鍔部）とパッキング（外筒）の下端とは単に当接しているだけであるので、筒体（内筒）とパッキング（外筒）との間の空間にボトル内の液体が入り込み、この液体が蓋（キャップ）に漏れを生じさせる恐れがある。
【０００７】
特許文献２に記載のものは、キャップの収納筒部と底蓋との間の液密性を確保するために、底蓋の上面に、キャップの収納筒部の内周下端部に嵌合するシール筒部を立設しているものの、これも気密性を確保することは難しく、ボトル内の湿気を含む空気が収容筒部内に浸入し、粉末等の原料が酸素と接触することにより変質や腐敗等を招く。また、底蓋が脱落した後、キャップと連結部材（外筒）との間に、それらの螺条が螺合しない空転域が形成されるため、この空転域による隙間から液漏れが生ずる。
【０００８】
更に、これら従来技術とも、底蓋は、脱落後にボトル内の液体中に自由に浮遊できる解放状態となるので、液体をボトルから注出するたびに、底蓋が注出の流れの邪魔をしたり、キャップ全体をボトルから外した場合、底蓋が液体と共にボトルから排出されるため、底蓋を液体と共に飲み込んでしまう危険性がある。
【０００９】
本発明の第１の目的は、原料収納部の下端開口を底蓋で封止したときの気密性が高く、原料収納部に収納した粉末等の変質や腐敗等を的確に防止できるようにすることにある。
【００１０】
本発明の第２の目的は、ボトル内の液体に対する漏れも確実に防止できるようにすることにある。
【００１１】
本発明の第３の目的は、底蓋を脱落後にキャップに懸垂できるようにして、自由に浮遊することによる弊害を防止できるようにすることにある。
【００１２】
【課題を解決するための手段】
本発明は、ボトルの口部に挿入する外筒を備えた親キャップと、その外筒に挿入して原料収納部となる内筒を備えた子キャップと、その内筒の下端開口を封止する底蓋とからなり、親キャップをボトルの口部に被せるとともに、子キャップを親キャップの外筒に螺合させることにより、該外筒の上端開口とともにボトルの口部を封止でき、また子キャップを親キャップの外筒に対し開く方向に回すことにより、底蓋が親キャップの外筒によって内筒から脱落され、内筒内の原料がボトル内に放出されるボトルキャップであって、次のような形態がある。
【００１３】
本発明の第１の形態は、内筒と底蓋とに、互いに螺合して緊締するネジ部を形成するとともに、底蓋と親キャップの外筒とに互いに嵌脱自在に嵌合する回り止め部を設け、子キャップを親キャップの外筒に対し開く方向に回したときに、底蓋が回り止め部により内筒との追従回転を規制されて、内筒から脱落するようにしたことを特徴とする。
【００１４】
このような構造によると、底蓋は、そのネジ部を原料収納部である内筒のネジ部に螺合させて内筒の下端開口を緊締状態で封止するので、気密性が高い。このようにネジ部を螺合させて緊締しても、底蓋は親キャップの外筒により内筒との追従回転を規制されるので、開封時における内筒からの脱落は支障なく行われる。
【００１５】
本発明の第１の形態の好適な具体的態様は次のとおりである。
底蓋の周縁に、内筒の下端部を密に嵌入させることができる環状溝が形成され、該環状溝の内面に、内筒の下端部のネジ部と螺合するネジ部が形成されている。
【００１６】
このような構造にすると、内筒の下端部を底蓋の周縁の環状溝に圧入させた状態で、該環状溝内で底蓋側のネジ部と内筒側のネジ部とを螺合させることができるので、気密性が一層高くなる。
【００１７】
回り止め部が、底蓋と外筒のうちの一方に設けられた凹部と、他方に設けられた凸部で、これら凹部と凸部とが外筒の長さ方向に嵌脱自在に嵌合するようになっている。
このような構造にすると、底蓋の回り止め設定を簡単に行える。
【００１８】
底蓋が可撓性の連結片にて親キャップの外筒に連結され、内筒から脱落したときに親キャップの外筒に懸垂される。
このような構造にすると、底蓋が内筒から脱落した後、底蓋の自由な浮遊を拘束できるとともに、親キャップをボトルから外すと、その外筒に底蓋を懸垂したままの状態で親キャップと一緒にボトルから取り出すことができる。
【００１９】
本発明の第２の形態は、内筒と底蓋とに、互いに螺合して緊締するネジ部を形成するとともに、底蓋と親キャップの外筒とに嵌合部を嵌合させて、外筒に対する底蓋の回転を規制する回り止め部材を備え、子キャップを親キャップの外筒に対し開く方向に回したときに、底蓋が回り止め部材により子キャップとの追従回転を規制されて、回り止め部材と共に内筒及び外筒から脱落するようにしたことを特徴とする。
【００２０】
このような構造によると、底蓋は、そのネジ部を原料収納部である内筒のネジ部に螺合させて内筒の下端開口を緊締状態で封止するので、気密性が高い。このようにネジ部を螺合させて緊締しても、底蓋は回り止め部材により内筒との追従回転を規制され、開封時には回り止め部材と共に脱落するので、その脱落は支障なく行われる。
【００２１】
本発明の第２の形態の好適な具体的態様は次のとおりである。
回り止め部材と外筒との嵌合部が、そのうちの一方に設けられた凹部と、他方に設けられた凸部で、これら凹部と凸部とが外筒の長さ方向に嵌脱自在に嵌合するようになっている。
このような構造にすると、回り止め部材による底蓋の回り止め設定を簡単に行える。
【００２２】
回り止め部材が可撓性の連結片にて親キャップの外筒に連結され、底蓋が内筒から脱落したときに、回り止め部材が底蓋を保持した状態で親キャップの外筒に懸垂される。
このような構造にすると、底蓋が内筒から脱落した後、底蓋の自由な浮遊を拘束できるとともに、親キャップをボトルから外すと、底蓋を回り止め部材に保持してそれと共に外筒から懸垂したままの状態で、親キャップと一緒にボトルから取り出すことができる。
【００２３】
子キャップの内筒を親キャップの外筒に挿入して、子キャップで外筒の上端開口を封止するときに、底蓋が、外筒を貫通してその下端開口から抜け出る大きさになっている。
このような構造にすると、内筒を外筒に挿入させながら子キャップで外筒の上端開口を封止する前に、内筒に原料を収容してその下端開口を底蓋で封止しておくことができるので、原料の収容作業、及び親キャップと子キャップと底蓋と回り止め部材の組み立て作業の自動化を容易に行える。
【００２４】
上記第１及び第２の形態のいずれの場合も、内筒内に圧力気体を封入し、底蓋が内筒から脱落するとき、内筒内の原料が圧力気体と共にボトル内に噴出されるようにすれば、内筒内への酸素や湿気の浸入を内圧により防止できるとともに、ボトル内への原料の放出を一気に行える。
【００２５】
また、第１及び第２の形態のいずれの場合も、内筒内に圧力気体を封入することに代えて、又は圧力気体を封入することに加えて、脱酸素剤と除湿剤の両方又はいずれか一方を封入してもよい。
【００２６】
更に、第１及び第２の形態のいずれの場合も、子キャップの頂部下面に、子キャップで外筒の上端開口を閉じたとき該上端開口内に圧入して、子キャップの胴部とで外筒の上端開口部を挟持する密閉リングを突設すれば、外筒の上端開口に対する気密性及び液密性を高めることができる。
【００３６】
【発明の実施の形態】
次に、本発明の実施の形態を図面に基づいて詳細に説明する。
【００３７】
図１〜図５は本発明の第１実施例のボトルキャップを示し、図１及び図２は組み立て前の状態、図３は組み立てた状態、図４はボトルにセットした状態、図５は開封の動作状態である。このボトルキャップは、図１及び図２に示すように、それぞれ樹脂成型された親キャップ１と子キャップ２と底蓋３とからなる。
【００３８】
親キャップ１は、ペットボトル等のボトル５０の口部５０ａに被せるキャップ本体５に、上下両端が開口した外筒６を一体に設けている。外筒６は、キャップ本体５の頂部５ａを上下に一体に貫通しており、頂部５ａより上側に突出した上部は、上端が開口する口部６ａとなり、また頂部５ａより下側に突出した下部は、キャップ本体５の胴部５ｂとの間に隙間を形成しながらその下端よりも下方に垂下して下端が開口する垂下筒部６ｂとなっている。この垂下筒部６ｂは、頂部５ａの近くで段差をなして細くなってから、下端開口に向かって徐々に先細となっている。垂下筒部６ｂの下端には、底蓋３の回り止めのための矩形の凸部７が、一箇所又は対向する二箇所に設けられている。また、垂下筒部６ｂの内周面の中途には、肉厚を僅かに厚くする微小な段部６ｃが形成されている。
【００３９】
キャップ本体５の胴部５ｂの内周面には、図４に示すように、ボトル５０の口部５０ａの雄ネジと螺合する雌ネジ５ｃが形成され、また外筒６の口部６ａの外周面には雄ネジ６ｄが形成されている。胴部５ｂの外周面には、指を掛けて開ける際の滑り止め用ローレット５ｄが刻設されている。
【００４０】
子キャップ２は、原料及び圧力気体充填部（カプセル）となる内筒９を、キャップ本体８の頂部８ａの下面から一体に突設するとともに、この内筒９の外周の至近位置において、肉薄の短い密閉リング１０を一体に突設している。内筒９は、キャップ本体８の胴部８ｂとの間に隙間を形成しながらそれよりもはるかに長く突出している。内筒９は、外筒６よりも径がやや小さく、外筒６との間に僅かな隙間を形成して挿入できるようになっているが、長さは外筒６よりも若干長くなっている。内筒９の外周面の下端部には、ネジ山数の少ない雄ネジ９ａが形成されている。内筒９は、内径については終端から下端まで同じであるが、外径は、内筒９の肉厚を徐々に薄くするように上端から下端に向かって徐々に小さくなっている。また、内筒９の外周面には、肉厚を僅かに薄くする微小な段部９ｃが形成されている。
【００４１】
子キャップ２の胴部８ｂの環状の下周縁部分８ｃは、全周にわたる切り込み８ｄによりその上側の部分と分離可能になっている。この切り込み８ｄより上側において、胴部８ｂの内周面には、外筒６の口部６ａの雄ネジ６ｄと螺合する雌ネジ８ｅが形成されている。図３に示すように、この雌ネジ８ｅを雄ネジ６ｃに螺合させ、更に環状の下周縁部分８ｃが雄ネジ６ｄの終端を強制的に越えるところまで子キャップ２を外筒６の口部６ａに被せると、口部６ａが気密かつ液密に封止される。このとき、子キャップ２は、その環状の下周縁部分８ｃが口部６ａに対し回転不能に固定され、また内筒９の雄ネジ９ａを有する下端部が、外筒６の垂下筒部６ｂの下端開口から突出し、内筒９の外周面中途の微小な段部９ｃと外筒６の内周面中途の微小な段部６ｃとが、近接して上下に対向する。更に、密閉リング１０が外筒６の口部６ａ内に圧入するとともに、子キャップ２の頂部８ａが外筒６の上端に圧接し、密閉リング１０が子キャップ２の胴部８ｂの角部とで外筒６の口部６ａを内外から挟持する状態となる。胴部８ｂの外周面には、指を掛けて開ける際の滑り止め用ローレット８ｆが刻設され、また頂部８ａの上面には、開ける方向を指示する矢印８ｇが浮き出し形成されている。
【００４２】
底蓋３は、上面が凸面、下面が凹面となる押込部３ａと、該押込部３ａの周縁とで断面Ｊ状をなして環状凹溝３ｂを形成する周壁部３ｃと、押込部３ａの凹面となっている下面の中央から下向きに突出する突起３ｄとを一体成型している。環状凹溝３ｂ内、つまり周壁部３ｃの内周面には、ネジ山数の少ない雌ネジ３ｅが形成され、この雌ネジ３ｅと内筒９の下端部の雄ネジ９ａとを螺合させて、内筒９の下端部を環状凹溝３ｂ内に嵌め込むとともに、押込部３ａを内筒９内に押し込むことにより、底蓋３は、圧力気体と原料１１を充填した内筒９の下端開口を気密かつ液密に封止する。また周壁部３ｃには、外筒６に対する回り止めのための矩形の凹部３ｆが、一箇所又は対向する二箇所に設けられている。この凹部３ｆを外筒６の凸部７と嵌脱自在に嵌合させることにより、底蓋３は、外筒６に対し回り止めされる。
【００４３】
なお、底蓋３の回り止めのための凹部と凸部は、外筒６側を凹部、底蓋３側を凸部としてもよい。
【００４４】
内筒９内に充填する原料１１としては、緑茶、コーヒー、紅茶、濃縮ミネラル、海洋深層水抽出ミネラル、健康食品、薬剤、濃縮果汁、乳製品、アルコール、濃縮野菜、スープ原料、ビタミン類、糖類、薬草類、発酵菌などを、粉末や顆粒や錠剤や液体としたものが挙げられる。また、圧力気体としては、原料１１の品質を安全に維持できる不活性ガスが良く、例えば窒素、ヘリウム、アルゴン、二酸化炭素、亜酸化窒素又はこれらの混合ガスが挙げられる。
【００４５】
底蓋３は、可撓性の連結片１２にて外筒６に連結されている。この連結片１２の上端部は外筒６の外周面に、下端部は底蓋３の下面にそれぞれ固定され、底蓋３を内筒９から外したとき、連結片１２は、ほぼ真っ直ぐな状態に復元して底蓋３を外筒６に対し懸垂状態とする。底蓋３は、連結片１２と共に外筒６（親キャップ１）と一体に樹脂成型することが可能である。
【００４６】
この第１実施例のボトルキャップは、親キャップ１と子キャップ２と底蓋３とを図３に示すように組み立て、内筒９内には、不活性ガス等の圧力気体と共に原料１１を充填して底蓋３で封止するとともに、外筒６の口部６ａは、子キャップ２のキャップ本体８で封止し、また底蓋３は、その凹部３ｆを外筒６の凸部７と嵌合させて外筒６に対し回り止め状態とする。そして、このように組み立てたボトルキャップを、図４に示すように、ペットボトル等のボトル５０の口部５０ａに装着する場合、外筒６をボトル口部５０ａ内に挿入し、親キャップ１のキャップ本体５の雌ネジ５ｃをボトル口部５０ａの雄ネジに螺合させて固く緊締することにより、該キャップ本体５にてボトル口部５０ａを封止する。
【００４７】
このようにボトル５０に装着された本ボトルキャップは、内筒９内に圧力気体が充填されているので、内筒９内への酸素や湿気の浸入を内圧により防止できるに加え、底蓋３は、内筒９の下端部を環状凹溝３ｂに嵌め込んで内筒９にネジ止めされているので、底蓋３に圧力気体による内圧がかかっていても、内筒９内からの圧力気体の漏れを確実に防止できる。
【００４８】
外筒６と内筒９との間では、それらの中途において、外筒６の内周面の段部６ｃと内筒６の外周面の段部９ｃとが近接して対向するので、ボトル５０内の液が外筒６の内周面と内筒９の外周面との間を浸透して上昇してくるのを堰止めできる。
【００４９】
外筒６の口部６ａと子キャップ２との間では、上記のように、子キャップ２の密閉リング１０が外筒６内に圧入するとともに、子キャップ２の頂部８ａが外筒６の上端に圧接し、密閉リング１０が胴部８ｂの角部とで外筒６の口部６ａを内外から挟持するので、外筒６の口部６ａに対する子キャップ２の気密性及び液密性は非常に高い。
【００５０】
図４に示す装着状態で、子キャップ２を開けることに伴う動作について図５を参照して説明する。
同図（Ａ）の状態から子キャップ２の胴部８ｂに指を掛けて矢印方向に回すと、胴部８ｂの環状の下周縁部分８ｃは、外筒６の口部６ａに対し回転不能になっているので、同図（Ｂ）に示すように切り込み８ｄにおいて上下に分離し、下周縁部分８ｃはそのまま残るのに対し、それより上側の胴部８ｂは口部６ａとの螺合により回転しながら上昇する。これに伴い内筒９も回転しながら上昇するが、底蓋３は、外筒６に対し回り止めされているので内筒９に追従して回転せず、子キャップ２を更に回して内筒９を更に上昇させると、内筒９の下端の雄ネジ９ａと底蓋３の雌ネジ３ｅとの螺合が外れ、底蓋３は、内筒９の下端から解放される。
【００５１】
なお、子キャップ２の胴部８ｂが切り込み８ｄにおいて上下に分離する力（ひねり）を子キャップ２に与えても、親キャップ１は、ボトル５０の口部５０ａに対し回転しないように、しっかりと緊締されている。
【００５２】
内筒９の下端から解放された底蓋３は、内筒９内に充填されている圧力気体にて同図（Ｃ）に示すように押し下げられ、底蓋３の凹部３ｆと外筒６の下端の凸部７との嵌合が外れて、底蓋３は外筒６からも解放されて脱落する。これにより同図（Ｄ）に示すように、内筒９内の原料１１が圧力気体と共にボトル５０内に一気に噴出され、ボトル５０内の液体と混合する。脱落した底蓋３は、連結片１２がほぼ真っ直ぐな状態に復元することにより外筒６に懸垂される。
【００５３】
ボトル５０内の液体を飲むには、子キャップ２を外筒６の口部６ａから外して内筒９を外筒６から抜き出し、口部６ａを開ける。その際、必要に応じ、子キャップ２を外筒６の口部６ａに対し再び閉めてボトル５０自体を振り、原料１１が液体によく混合してから、子キャップ２を外す。
【００５４】
子キャップ２の胴部８ｂが切り込み８ｄにおいて上下に分離することで、底蓋３が脱落することを確認できるが、ボトル５０が内部を透視できるようになっている場合には、底蓋３が脱落したことを目視確認できる。
【００５５】
親キャップ１をボトル５０から外せば、これと共に底蓋３も懸垂状態のまま一緒に取り出すことができるので、ボトル５０のリサイクル性が良い。
【００５６】
子キャップ２の胴部８ｂに切り込み８ｄを設け、その環状の下周縁部分８ｃを外筒６の口部６ａに対し回転不能とすることで、子キャップ２の封止の緩みを防止できるとともに、切り込み８ｄで分離するまで子キャップ２を強制的に回さないと、底蓋３を脱落させて原料１１の噴出を行えないという確認になるが、必ずしもこのような構造にする必要はない。
【００５７】
図６〜図８は本発明の第２実施例のボトルキャップを示し、図６は組み立てた状態、図７はボトルにセットした状態、図８は開ける動作状態で、それぞれ第１実施例における図３、図４、図５に対応する。上記第１実施例では、底蓋３を外筒６に連結して懸垂状態とするための連結片１２を設けたが、第２実施例ではこれを省略しただけで、その他については第１実施例と同じである。
【００５８】
従って、第２実施例では、底蓋３が外筒６に懸垂されることなく、ボトル５０内の液中に沈降する。図９（Ａ）は、子キャップ２を開く方向に回して原料１１が噴出されるとともに、底蓋３が沈降していく状態、同図（Ｂ）は子キャップ２を再び閉める状態、同図（Ｃ）は、ボトル５０を振って原料１１の混合を行っている状態をそれぞれ示す。底蓋３は、突起３ｄを有するので、ボトル５０内の液中に沈降する際にこの突起３ｄにて方向性を与えられる。
【００５９】
図１０〜図１３は本発明の第３実施例のボトルキャップを示し、図１０は組み立てまでの断面図、図１１は底蓋の斜視図、図１２は回り止め部材の斜視図、図１３は開封する動作状態の断面図である。この第３実施例のボトルキャップは、図１０（Ａ）に示すように、親キャップ１と子キャップ２と底蓋３に加え回転止め部材４からなる。
【００６０】
第３実施例における親キャップ１は、外筒６の下端に、第１実施例における回り止め用の凸部７に代えて凹部７ａを設けているが、その他については第１実施例の親キャップと同じである。また、第３実施例における子キャップ２は、第１実施例では内筒９の外周面の下端に設けた雄ネジ９ａに代えて、内筒９の内周面の下端に雌ネジ９ｄを形成しているが、その他については第１実施例の子キャップと同じである。
【００６１】
第３実施例における底蓋３は、第１実施例のものとは大幅に異なり、図１１に示すように押込部１３ａと鍔部１３ｂとからなり、押込部１３ａの外周に、内筒９の雌ネジ９ｄと螺合する雄ネジ１３ｃを形成し、鍔部１３ｂの外周に環状溝１３ｄを形成し、また鍔部１３ｂの下面に、断面台形の十字状溝１３ｅを形成している。
【００６２】
底蓋３は、その雄ネジ１３ｃを内筒９の雌ネジ９ｄに螺合させて押込部１３ａを内筒９に押し込むと、内筒９の下端開口を気密かつ液密に封止する。その際の螺合作業には、十字状溝１３ｅを利用して底蓋３を回すことができる。底蓋３の鍔部１３ｂの外径は、内筒９の下端の外径とほぼ等しいので、内筒９は底蓋３で封止したまま外筒６に挿入でき、しかも図１０（Ｂ）に示すように、子キャップ２を外筒６の口部６ａに被せて内筒９を外筒６に最大限に挿入すると、底蓋３は外筒６の下端開口から抜け出る。
【００６３】
第３実施例で加わった回り止め部材４は、図１２に示すように、リング部１４ａの内側に、断面台形の十字状リブ１４ｂを一体に設けるとともに、リング部１４ａの内周面に環状突部１４ｃを形成し、リング部１４ａの対向する二箇所から回り止め用の矩形凸部１４ｄを一体に突設している。そして、この回り止め部材４は、可撓性の連結片１２にて外筒６に連結されている。この連結片１２の上端部は外筒６の外周面に、下端部は回り止め部材４のリング部１４ａにそれぞれ固定され、連結片１２は、ほぼ真っ直ぐな状態に復元すると回り止め部材４を外筒６に対し懸垂状態とする。回り止め部材４は、連結片１２と共に外筒６（親キャップ１）と一体に樹脂成型することが可能である。
【００６４】
回り止め部材４は、親キャップ１と子キャップ２と底蓋３とを図１０（Ｂ）に示すように組み合わせた後、同図（Ｃ）に示すように底蓋３に向かって押し付け、回り止め部材４の断面台形の十字状リブ１４ｂを底蓋３の断面台形の十字状溝１３ｅに強制的に嵌合させるとともに、回り止め部材４の内周の環状突部１４を底蓋３の外周の環状溝１３ｄに強制的に嵌合させ、更に回り止め部材４の凸部１４ｄを外筒６の下端の凹部７ａに嵌脱自在に嵌合させる。
【００６５】
これにより回り止め部材４と底蓋３とは互いに外れないように合体され、しかも回り止め部材４は、底蓋３を抱持して外筒６に対し回り止め状態とする。
【００６６】
第３実施例のボトルキャップの場合、図１３（Ａ）に示すように、子キャップ２を矢印方向に回すと、その胴部８ｂの環状の下周縁部分８ｃを残して内筒９も回転しながら上昇するが、底蓋３は、回り止め部材４にて外筒６に対し回り止めされているので内筒９に追従して回転せず、子キャップ２を更に回して内筒９を更に上昇させると、同図（Ｂ）に示すように内筒９の下端の雌ネジ９ｄと底蓋３の雄ネジ１３ｃとの螺合が外れ、底蓋３は、内筒９の下端から解放される。
【００６７】
内筒９の下端から解放された底蓋３は、内筒９内に充填されている圧力気体にて押し下げられ、これと一体に回り止め部材４も押し下げられて、その凸部１４ｄが外筒６の下端の凹部７ａから外れ、回り止め部材４が外筒６から解放されて底蓋３を保持したまま脱落する。これにより同図（Ｃ）に示すように、内筒９内の原料１１が圧力気体と共に一気に噴出される。脱落した回り止め部材４は、連結片１２がほぼ真っ直ぐな状態に復元することにより、底蓋３を保持したまま外筒６に懸垂される。
【００６８】
第３実施例のボトルキャップの場合、回り止め部材４を必要とするが、組み立ては、子キャップ２の内筒９内に原料１１及び圧力気体を充填して底蓋３で封止した後、その封止した内筒９をそのまま外筒６に挿入して子キャップ２を外筒６の口部６ａに被せ、回り止め部材４を底蓋３に向かって押し付けるだけで完了するので、特別な治具や反転機構等が不要であり、自動化が容易である。
【００６９】
図１４〜図１７は本発明の第４実施例のボトルキャップを示し、図１４及び図１５は組み立て前の状態、図１６は組み立てた状態、図１７はボトルにセットした状態をそれぞれ示す。
【００７０】
第４実施例のボトルキャップは、底蓋３を子キャップ２の内筒９の下端にネジ止めしないで、内筒９の下端開口を嵌合構造だけで気密かつ液密に封止できるようにしたものである。すなわち、底蓋３の環状凹溝３ｂ内の雌ネジ３ｅを省略して、環状凹溝３ｂの断面を逆Ω状にする一方、内筒９の下端縁を外側に膨らむ突縁９ｅとし、これら断面逆Ω状の環状凹溝３ｂと外側に膨らんだ突縁９ｅとを強制的に嵌合させて封止する。
【００７１】
第４実施例の場合には、底蓋３を内筒９の下端にネジ止めしていないので、外筒６に対して底蓋３を回り止めする必要はなく、子キャップ２を回して内筒９を上昇させていくと、底蓋３の周壁部３ｃが外筒６の下端に当接して底蓋３はそれ以上の上昇を拘束されるため、更に上昇していく内筒９から底蓋３が外れて脱落する。これが脱落すると、内筒９内の原料１１が圧力気体と共に一気に噴出される。底蓋３はボトル内の液中に沈降する。
【００７２】
なお、第４実施例の場合にも、上述した実施例の場合と同様に、底蓋３を連結片にて外筒５に連結してもよいこと勿論である。
【００７３】
子キャップ２の胴部８ｂに、切り込み８ｄにより分離する環状の下周縁部分８ｃを設けない場合には、ボトル５０にセットした状態で子キャップ２を不用意に回して開けないように、図１８に示すように、子キャップ２の胴部８ｂと親キャップ１の胴部５ｂとを、透明又は半透明のシュリンクフィルム５１にて包被する。このシュリンクフィルム５１には、上側部分５１ａと下側部分５１ｂとに上下に二分するための切り取り線５１ｃと、上側部分５１ａを縦に切り裂くための切り裂き線５１ｄとが設けられており、ボトルキャップの開封時には、切り裂き線５１ｄで上側部分５１ａを切り裂いてから、子キャップ２の胴部８ｂに指を掛けてこれを回す。すると、シュリンクフィルム５１が、切り取り線５１ｃで上下に分離して、子キャップ２の胴部８ｂを包被していた上側部分５１ａは外れてしまうが、下側部分５１ｂは、図１９に示すように親キャップ１の胴部５ｂを包被したまま残る。このような状態になることで、当該ボトルキャップが開封されたことが分かる。これは、上記第１〜第４のいずれの実施例にも適用できる。
【００７４】
上記の実施例では、内筒９内の原料１１が酸素や湿気に接触して変質や腐敗等をしないようにするのに、内筒９内に圧力気体を封入したが、図２０に示すように、脱酸素剤と除湿剤の両方又はいずれか一方２１を内筒９内に封入してもよい。その場合、脱酸素剤又は除湿剤２１を多孔質の容器２２内に入れ、容器２２ごと内筒９の奥端まで圧入する。その圧入に加えて、圧力気体も封入してもよい。
【００７５】
図２１に示すように、外筒６に、その下端から所要長さの排出用溝６ｅを設けておけば、子キャップ２をその内筒９と共に抜き出してボトル５０内の液体を外筒６の口部６ａから注出する際、外筒６とボトル５０の口部５０ａとの間に液体を残留させることなく、注出できる。
【００７６】
図２２に、本発明によるボトルキャップの組み立てから、圧力気体及び原料の充填、ボトルへの装着までを自動的に行う方法を例示する。
第１実施例及び第２実施例のボトルキャップの場合、図２０（１）に示すように、親キャップ１を逆さにして底蓋３を外筒５にセットする。同図（２）に示すように、子キャップ２を逆さにして内筒９内に原料ホッパ５２から原料１１を定量投入する。
【００７７】
同図（３）に示すように、親キャップ１及び子キャップ２を充填機５３の圧力室５４内に入れ、圧力室５４内を真空ポンプ５５に真空にした後、圧力気体供給装置５６から圧力気体として窒素等の不活性ガスを供給する。
【００７８】
同図（４）に示すように、圧力室５４内で底蓋３を治具５７にて固定しておいたまま、子キャップ２をネジ込み装置５８にて親キャップ１にネジ込んで、原料と圧力気体を充填した内筒９を封止した後、全体を反転させる。
【００７９】
一方、同図（５）に示すように、ボトル５０内にボトリングマシン５９にて液体を充填しておく。そして、同図（６）に示すように、スクリューキャッパ６０にて親キャップ１をボトル５０の口部５０ａに螺合緊締する。螺合によらない場合には、同図（７）に示すように、プレスキャッパ６１にて親キャップ１をボトル５０の口部に強制的に嵌合させる。
【００８０】
上述した実施例では、ボトル胴部に対し口部５０ａがすぼまったボトル５０に適用した場合について説明したが、本発明によるボトルキャップは、図２３及び図２４に示すように、口部が胴部と同じような大きさの広口のボトルにも適用できる。
【００８１】
【発明の効果】
本発明による効果を請求項毎に挙げると次のとおりである。
＜請求項１＞
底蓋は、そのネジ部を原料収納部である内筒のネジ部に螺合させて内筒の下端開口を緊締状態で封止するので、気密性が高い。このようにネジ部を螺合させて緊締しても、底蓋は親キャップの外筒により内筒との追従回転を規制されるので、開封時における内筒からの脱落は支障なく行われる。
【００８２】
＜請求項２＞
内筒の下端部を底蓋の周縁の環状溝に圧入させた状態で、該環状溝内で底蓋側のネジ部と内筒側のネジ部とを螺合させることができるので、気密性が一層高くなる。
【００８３】
＜請求項３＞
底蓋を外筒に対し回り止めする回り止め部が、底蓋と外筒のうちの一方に設けられた凹部と、他方に設けられた凸部で、これら凹部と凸部とが外筒の長さ方向に嵌脱自在に嵌合するようになっているので、底蓋の回り止め設定を簡単に行える。
【００８４】
＜請求項４＞
底蓋が可撓性の連結片にて親キャップの外筒に連結され、内筒から脱落したときに親キャップの外筒に懸垂されるので、底蓋が内筒から脱落した後、底蓋の自由な浮遊を拘束できるとともに、親キャップをボトルから外すと、その外筒に底蓋を懸垂したままの状態で親キャップと一緒にボトルから取り出すことができるので、底蓋の誤飲を防止できる。
【００８５】
＜請求項５＞
底蓋は、そのネジ部を原料収納部である内筒のネジ部に螺合させて内筒の下端開口を緊締状態で封止するので、気密性が高い。このようにネジ部を螺合させて緊締しても、底蓋は回り止め部材により内筒との追従回転を規制され、開封時には回り止め部材と共に脱落するので、その脱落は支障なく行われる。
【００８６】
＜請求項６＞
回り止め部材と外筒との嵌合部が、そのうちの一方に設けられた凹部と、他方に設けられた凸部で、これら凹部と凸部とが外筒の長さ方向に嵌脱自在に嵌合するようになっているので、回り止め部材による底蓋の回り止め設定を簡単に行える。
【００８７】
＜請求項７＞
回り止め部材が可撓性の連結片にて親キャップの外筒に連結され、底蓋が内筒から脱落したときに、回り止め部材が底蓋を保持した状態で親キャップの外筒に懸垂されるので、底蓋が内筒から脱落した後、底蓋の自由な浮遊を拘束できるとともに、親キャップをボトルから外すと、底蓋を回り止め部材に保持してそれと共に外筒から懸垂したままの状態で、親キャップと一緒にボトルから取り出すことができるので、底蓋の誤飲を防止できる。
【００８８】
＜請求項８＞
子キャップの内筒を親キャップの外筒に挿入して、子キャップで外筒の上端開口を封止するときに、底蓋が、外筒を貫通してその下端開口から抜け出る大きさになっているので、内筒を外筒に挿入させながら子キャップで外筒の上端開口を封止する前に、内筒に原料を収容してその下端開口を底蓋で封止しておくことができるので、原料の収容作業、及び親キャップと子キャップと底蓋と回り止め部材の組み立て作業の自動化を容易に行える。
【００８９】
＜請求項９＞
内筒内に圧力気体を封入し、底蓋が内筒から脱落するとき、内筒内の原料が圧力気体と共にボトル内に噴出されるようにしたので、内筒内への酸素や湿気の浸入を内圧により防止でき、原料が酸素や湿気と接触することによる変質や腐敗等を防止できるとともに、ボトル内への原料の放出を一気に行える。
【００９０】
＜請求項１０＞
内筒内に、脱酸素剤と除湿剤の両方又はいずれか一方を封入したので、原料が酸素や湿気と接触することによる変質や腐敗等を防止できる
【００９１】
＜請求項１１＞
子キャップの頂部下面に、子キャップで外筒の上端開口を閉じたとき該上端開口内に圧入して、子キャップの胴部とで外筒の上端開口部を挟持する密閉リングを突設したので、外筒の上端開口に対する気密性及び液密性を高めることができる。
【図面の簡単な説明】
【図１】本発明の第１実施例のボトルキャップの組み立て前の状態で、（Ａ）は斜視図、（Ｂ）は断面図である。
【図２】同様の状態で、（Ａ）は斜視図、（Ｂ）は断面図である。
【図３】同実施例の組み立てた状態で、（Ａ）は正面図、（Ｂ）は断面図である。
【図４】同実施例のボトルにセットした状態の断面図である。
【図５】同実施例の開封の動作状態を（Ａ）、（Ｂ）、（Ｃ）、（Ｄ）の順序で示す断面図である。
【図６】本発明の第２実施例のボトルキャップの組み立てた状態で、（Ａ）は正面図、（Ｂ）は断面図である。
【図７】同実施例のボトルにセットした状態の断面図である。
【図８】同実施例の開封の動作状態を（Ａ）、（Ｂ）、（Ｃ）、（Ｄ）の順序で示す断面図である。
【図９】開封よりボトル内の液体を飲用するまでの操作を（Ａ）、（Ｂ）、（Ｃ）の順序で示す斜視図である。
【図１０】本発明の第３実施例のボトルキャップについて、その組み立てまでを（Ａ）、（Ｂ）、（Ｃ）の順序で示す断面図である。
【図１１】同実施例における底蓋の斜視図である。
【図１２】同実施例における回り止め部材の斜視図である。
【図１３】同実施例の開封の動作状態を（Ａ）、（Ｂ）、（Ｃ）の順序で示す断面図である。
【図１４】本発明の第３実施例のボトルキャップの組み立て前の状態で、（Ａ）は斜視図、（Ｂ）は断面図である。
【図１５】同様の状態で、（Ａ）は斜視図、（Ｂ）は断面図である。
【図１６】同実施例の組み立てた状態で、（Ａ）は斜視図、（Ｂ）は断面図である。
【図１７】同実施例のボトルにセットした状態の断面図である。
【図１８】本発明によるボトルキャップをシュリンクフィルムで包被した使用例を示す斜視図である。
【図１９】同上においてシュリンクフィルムの一部を取り除いた状態の斜視図である。
【図２０】内筒内に脱酸素剤又は除湿剤を封入した実施例の断面図である。
【図２１】外筒に排出用溝を設けた実施例の断面図である。
【図２２】本発明によるボトルキャップの組み立てから、圧力気体及び原料の充填、ボトルへの装着までを自動的に行う方法の一例を示す説明図である。
【図２３】広口のボトルに適用した実施例の斜視図である。
【図２４】同上の断面図である。
【符号の説明】
１親キャップ
２子キャップ
３底蓋
３ａ押込部
３ｂ環状凹溝
３ｃ周壁部
３ｄ突起
３ｅ雌ネジ
３ｆ凹部
４回転止め部材
５キャップ本体
５ａ頂部
５ｂ胴部
５ｃ雌ネジ
５ｄローレット
６外筒
６ａ口部
６ｂ垂下筒部
６ｃ段部
６ｄ雄ネジ
６ｅ排出用溝
７凸部
７ａ凹部
８キャップ本体
８ａ頂部
８ｂ胴部
８ｃ下周縁部分
８ｄ切り込み
８ｅ雌ネジ
８ｆローレット
８ｇ矢印
９内筒
９ａ雄ネジ
９ｃ段部
９ｄ雌ネジ
９ｅ突縁
１０密閉リング
１１原料
１２連結片
１３ａ押込部
１３ｂ鍔部
１３ｃ雄ネジ
１３ｂ鍔部
１３ｅ十字状溝
１４ａリング部
１４ｂ十字状リブ
１４ｃ環状突部
１４ｄ凸部
２１脱酸素剤又は除湿剤
２２容器
５０ボトル
５０ａボトル口部
５１シュリンクフィルム
５１ａ上側部分
５１ｂ下側部分
５１ｃ切り取り線
５１ｄ切り裂き線
５２原料ホッパ
５３充填機
５４圧力室
５５真空ポンプ
５６圧力気体供給装置
５７治具
５８ネジ込み装置
５９ボトリングマシン
６０スクリューキャッパ
６１プレスキャッパ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bottle cap that has a raw material container that contains a powdery or liquid raw material, and that releases the raw material into a bottle by dropping the bottom cover of the raw material container in accordance with the opening operation.
[0002]
[Prior art]
Conventionally, as this kind of bottle cap, for example, there are those described in Patent Document 1 (Japanese Utility Model Publication No. 44-12957) and Patent Document 2 (Japanese Patent No. 3281730).
[0003]
Patent Document 1 describes a cylindrical packing (outer cylinder) made of a flexible resin, a lid (cap) having a cylindrical body (inner cylinder) serving as a raw material container, and an annular protruding edge (鍔). Part), and the packing is inserted into the mouth of the bottle, and the stopper is inserted into the bottom opening of the cylinder to seal the cylinder. The mouth is closed by screwing into the mouth. The lower part of the cylinder of the lid is narrowed in a funnel shape, and when the bottle mouth is completely closed with the lid, the lower end of the cylinder is engaged with the annular protruding edge of the push plug. When the lid is turned in the opening direction with respect to the mouth of the bottle, the cylinder rises with the lid, but since the push-in stopper is restricted from rising at the lower end of the packing, the powder falls off the cylinder and is contained in the cylinder. Is released into the bottle.
[0004]
Further, in the case of Patent Document 2, a flange is extended to the inner periphery of a fitting tube portion that is fixedly fitted in and fixed to the outer periphery of the bottle neck of the bottle, and the support tube portion is integrated from the inner periphery of the flange. A connecting member (outer cylinder) that is suspended, a cap that has a storage cylinder (inner cylinder) suspended from the center of the rear surface of the top wall, and a liquid-tight and detachable fit to the lower end of the storage cylinder A dish-shaped bottom lid having the upper portion as a raw material storage portion, and a first screw thread is provided around the lower part of the outer periphery of the fitting tube portion of the connecting member (outer tube). A second screw thread is provided above the area, and a screw threaded to be engaged with the first screw thread is provided at the inner peripheral lower portion of the peripheral wall of the cap. The cap is connected to the connecting member (outer cylinder). When the cap is turned up and lifted, the upper surface of the peripheral edge of the bottom cover is supported before the cap screw is disengaged from the first screw of the connecting member (outer cylinder) and idles. So that the fall off is engaged with the lower end of the cylindrical portion. The bottom cover is provided with a seal cylinder portion that is fitted to the lower end portion of the inner periphery of the storage cylinder portion of the cap at the peripheral edge portion of the upper surface of the bottom wall to maintain liquid tightness.
[0005]
[Patent Document 1]
Japanese Utility Model Publication No. 44-12957 (first page, FIG. 1, FIG. 2)
[Patent Document 2]
Japanese Patent No. 3281730 (Page 2, FIGS. 1 and 3)
[0006]
[Problems to be solved by the invention]
However, although the thing of patent document 1 is pushing the pushing stopper (bottom lid) into the cylinder (inner cylinder) which is a raw material accommodating part, it is difficult to ensure the airtightness between these, The air containing the moisture penetrates into the cylinder (inner cylinder) which is the raw material container, and the raw materials such as powder come into contact with oxygen and moisture, thereby causing alteration and decay. Further, since the annular protruding edge (protrusion) of the push-in stopper and the lower end of the packing (outer cylinder) are merely in contact, the space between the cylinder (inner cylinder) and the packing (outer cylinder) There is a risk that the liquid in the bottle will get into the bottle, and this liquid may cause leakage in the lid (cap).
[0007]
In order to ensure the liquid-tightness between the storage cylinder part of the cap and the bottom cover, the one described in Patent Document 2 is fitted on the lower end of the inner periphery of the storage cylinder part of the cap on the upper surface of the bottom cover. Although the seal cylinder part is erected, it is difficult to ensure airtightness, and air containing moisture in the bottle penetrates into the storage cylinder part. Invite corruption. In addition, after the bottom lid is removed, an idling region where the screw threads are not screwed is formed between the cap and the connecting member (outer cylinder), and thus liquid leakage occurs from the gap due to the idling region.
[0008]
Furthermore, in both of these prior arts, the bottom lid is in a released state in which it can float freely in the liquid in the bottle after dropping, so that the bottom lid obstructs the flow of dispensing each time the liquid is poured out of the bottle. If the entire cap is removed from the bottle, the bottom lid is discharged from the bottle together with the liquid, so that there is a risk of swallowing the bottom lid together with the liquid.
[0009]
The first object of the present invention is to have high airtightness when the lower end opening of the raw material storage part is sealed with a bottom lid, and to make it possible to accurately prevent alteration or decay of the powder stored in the raw material storage part. There is.
[0010]
The second object of the present invention is to reliably prevent leakage of liquid in the bottle.
[0011]
The third object of the present invention is to allow the bottom lid to be suspended from the cap after dropping off, thereby preventing adverse effects caused by free floating.
[0012]
[Means for Solving the Problems]
The present invention seals a parent cap having an outer cylinder to be inserted into the mouth of a bottle, a child cap having an inner cylinder to be inserted into the outer cylinder and serving as a raw material storage section, and a lower end opening of the inner cylinder The bottle cap can be sealed together with the upper end opening of the outer cylinder by screwing the child cap onto the outer cylinder of the parent cap. By rotating the child cap in the opening direction with respect to the outer cylinder of the parent cap, the bottom lid is dropped from the inner cylinder by the outer cylinder of the parent cap, and the bottle cap in which the raw material in the inner cylinder is discharged into the bottle, There are the following forms.
[0013]
In the first aspect of the present invention, the inner cylinder and the bottom cover are screwed together to form a threaded portion and fastened to the bottom cover and the outer cylinder of the parent cap. Provided a stopper, and when the child cap was rotated in the opening direction with respect to the outer cylinder of the parent cap, the bottom lid was restricted from following rotation with the inner cylinder by the stopper, so that it would fall off the inner cylinder It is characterized by.
[0014]
According to such a structure, the bottom cover is highly airtight because the screw portion is screwed into the screw portion of the inner cylinder, which is the raw material storage portion, and the lower end opening of the inner cylinder is sealed in a tightened state. Even if the threaded portion is screwed and tightened in this way, the bottom lid is restricted from following rotation with the inner cylinder by the outer cylinder of the parent cap, so that the dropout from the inner cylinder at the time of opening is performed without any trouble.
[0015]
Preferred specific embodiments of the first aspect of the present invention are as follows.
An annular groove capable of closely fitting the lower end of the inner cylinder is formed on the periphery of the bottom lid, and a threaded portion is formed on the inner surface of the annular groove to be screwed with the threaded portion of the lower end of the inner cylinder. Yes.
[0016]
With such a structure, the bottom lid side screw portion and the inner cylinder side screw portion are screwed into the annular groove in a state where the lower end portion of the inner cylinder is press-fitted into the annular groove on the periphery of the bottom lid. Airtightness is further increased.
[0017]
The non-rotating portion is a concave portion provided on one of the bottom lid and the outer cylinder and a convex portion provided on the other, and the concave portion and the convex portion are detachably fitted in the length direction of the outer cylinder. It is supposed to be.
With such a structure, it is possible to easily set the rotation of the bottom lid.
[0018]
The bottom cover is connected to the outer cylinder of the parent cap by a flexible connecting piece, and is suspended from the outer cylinder of the parent cap when it is detached from the inner cylinder.
With such a structure, after the bottom lid has fallen from the inner cylinder, free floating of the bottom lid can be restricted, and when the parent cap is removed from the bottle, the parent lid remains suspended from the outer cylinder. Can be removed from the bottle along with the cap.
[0019]
In the second embodiment of the present invention, the inner cylinder and the bottom cover are screwed together to form a threaded portion, and the fitting portion is fitted to the bottom cover and the outer cylinder of the parent cap. A rotation prevention member that restricts the rotation of the bottom lid relative to the outer cylinder is provided, and when the child cap is rotated in the opening direction with respect to the outer cylinder of the parent cap, the bottom lid is restricted from following rotation with the child cap by the rotation prevention member. Thus, it is characterized in that it comes off from the inner cylinder and the outer cylinder together with the rotation preventing member.
[0020]
According to such a structure, the bottom cover is highly airtight because the screw portion is screwed into the screw portion of the inner cylinder, which is the raw material storage portion, and the lower end opening of the inner cylinder is sealed in a tightened state. Even if the threaded portion is screwed and tightened in this manner, the bottom lid is restricted from following rotation with the inner cylinder by the anti-rotation member and falls off together with the anti-rotation member at the time of opening, so that the omission is performed without any trouble.
[0021]
Preferred specific embodiments of the second aspect of the present invention are as follows.
The fitting part between the rotation-preventing member and the outer cylinder is a concave part provided on one of them, and a convex part provided on the other, so that the concave part and the convex part can be fitted and removed in the length direction of the outer cylinder. It is designed to fit.
With such a structure, it is possible to easily set the rotation of the bottom lid by the rotation preventing member.
[0022]
When the non-rotating member is connected to the outer cylinder of the parent cap by a flexible connecting piece, and the bottom cover is removed from the inner cylinder, the anti-rotating member is suspended from the outer cylinder of the parent cap while holding the bottom lid. Is done.
With such a structure, after the bottom lid has fallen from the inner cylinder, free floating of the bottom lid can be restrained, and when the parent cap is removed from the bottle, the bottom lid is held on the non-rotating member and it is Can be removed from the bottle with the parent cap while hanging from the bottle.
[0023]
When the inner cylinder of the child cap is inserted into the outer cylinder of the parent cap, and the upper end opening of the outer cylinder is sealed with the child cap, the bottom lid is sized to penetrate the outer cylinder and exit from the lower end opening. ing.
With such a structure, before the upper end opening of the outer cylinder is sealed with the child cap while the inner cylinder is inserted into the outer cylinder, the raw material is stored in the inner cylinder and the lower end opening is sealed with the bottom cover. Therefore, it is possible to easily automate the raw material storage operation and the assembly operation of the parent cap, the child cap, the bottom lid, and the rotation stopper member.
[0024]
In both cases of the first and second embodiments, when the pressure gas is sealed in the inner cylinder and the bottom cover is dropped from the inner cylinder, the raw material in the inner cylinder is jetted into the bottle together with the pressure gas. By doing so, it is possible to prevent the intrusion of oxygen and moisture into the inner cylinder by the internal pressure, and it is possible to release the raw material into the bottle at once.
[0025]
Further, in both cases of the first and second embodiments, instead of enclosing the pressure gas in the inner cylinder, or in addition to enclosing the pressure gas, both or any of the oxygen absorber and the dehumidifier Either of them may be enclosed.
[0026]
Further, in both cases of the first and second embodiments, when the upper end opening of the outer cylinder is closed to the lower surface of the top portion of the child cap with the child cap, it is press-fitted into the upper end opening and If the sealing ring which clamps the upper end opening part of an outer cylinder is protrudingly provided, the airtightness and liquid-tightness with respect to the upper end opening of an outer cylinder can be improved.
[0036]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described in detail with reference to the drawings.
[0037]
1 to 5 show a bottle cap according to a first embodiment of the present invention, FIG. 1 and FIG. 2 are states before assembly, FIG. 3 is an assembled state, FIG. 4 is a set state in a bottle, and FIG. Is the operating state. As shown in FIGS. 1 and 2, the bottle cap includes a parent cap 1, a child cap 2, and a bottom lid 3 that are resin-molded.
[0038]
The parent cap 1 is integrally provided with an outer cylinder 6 whose upper and lower ends are open on a cap body 5 that covers a mouth portion 50a of a bottle 50 such as a plastic bottle. The outer cylinder 6 integrally penetrates the top part 5a of the cap body 5 vertically, and the upper part protruding upward from the top part 5a becomes a mouth part 6a whose upper end is open, and the lower part protruding downward from the top part 5a. Is a hanging cylinder portion 6b that hangs downward from its lower end and opens at its lower end while forming a gap with the body portion 5b of the cap body 5. The drooping cylinder portion 6b is tapered with a step near the top portion 5a, and then gradually tapers toward the lower end opening. At the lower end of the drooping cylinder portion 6b, rectangular convex portions 7 for preventing the bottom lid 3 from rotating are provided at one location or at two opposing locations. In addition, a minute step portion 6c that slightly increases the thickness is formed in the middle of the inner peripheral surface of the hanging cylinder portion 6b.
[0039]
As shown in FIG. 4, a female screw 5 c that engages with a male screw of the mouth part 50 a of the bottle 50 is formed on the inner peripheral surface of the body part 5 b of the cap body 5. A male screw 6d is formed on the outer peripheral surface. An anti-slip knurl 5d is formed on the outer peripheral surface of the body portion 5b when the finger is put on it.
[0040]
The child cap 2 integrally protrudes from the lower surface of the top portion 8a of the cap body 8 with the inner cylinder 9 serving as a raw material and pressurized gas filling section (capsule), and is thin at a position close to the outer periphery of the inner cylinder 9. A short sealing ring 10 is integrally projected. The inner cylinder 9 protrudes much longer than that while forming a gap with the body portion 8b of the cap body 8. The inner cylinder 9 is slightly smaller in diameter than the outer cylinder 6 and can be inserted with a slight gap between the inner cylinder 6 but the length is slightly longer than the outer cylinder 6. Yes. A male screw 9 a having a small number of screw threads is formed at the lower end portion of the outer peripheral surface of the inner cylinder 9. The inner cylinder 9 has the same inner diameter from the terminal end to the lower end, but the outer diameter gradually decreases from the upper end to the lower end so that the thickness of the inner cylinder 9 is gradually reduced. Further, on the outer peripheral surface of the inner cylinder 9, a minute step portion 9 c that is slightly thinned is formed.
[0041]
An annular lower peripheral edge portion 8c of the trunk portion 8b of the child cap 2 can be separated from an upper portion thereof by a cut 8d extending over the entire circumference. On the inner peripheral surface of the body portion 8b above the notch 8d, a female screw 8e that is screwed with the male screw 6d of the mouth portion 6a of the outer cylinder 6 is formed. As shown in FIG. 3, the female screw 8e is screwed into the male screw 6c, and the child cap 2 is moved to the mouth of the outer cylinder 6 until the annular lower peripheral edge portion 8c forcibly exceeds the end of the male screw 6d. If it covers 6a, mouth part 6a will be sealed airtight and liquid-tight. At this time, the child cap 2 has an annular lower peripheral edge portion 8c fixed so as not to rotate with respect to the mouth portion 6a, and a lower end portion having a male screw 9a of the inner cylinder 9 is connected to the hanging cylinder portion 6b of the outer cylinder 6. The minute step portion 9c in the middle of the outer peripheral surface of the inner cylinder 9 and the minute step portion 6c in the middle of the inner peripheral surface of the outer cylinder 6 are close to each other and vertically face each other. Further, the sealing ring 10 is press-fitted into the mouth portion 6 a of the outer cylinder 6, the top portion 8 a of the child cap 2 is pressed against the upper end of the outer tube 6, and the sealing ring 10 is connected to the corner portion of the trunk portion 8 b of the child cap 2. Thus, the mouth portion 6a of the outer cylinder 6 is clamped from inside and outside. An anti-slip knurl 8f is formed on the outer peripheral surface of the body portion 8b, and an arrow 8g is provided on the top surface of the top portion 8a so as to indicate the opening direction.
[0042]
The bottom cover 3 includes a pressing portion 3a having a convex upper surface and a concave surface on the lower surface, a peripheral wall portion 3c having a J-shaped cross section with a peripheral edge of the pressing portion 3a, and a concave surface of the pressing portion 3a. A protrusion 3d protruding downward from the center of the lower surface is integrally molded. A female screw 3e with a small number of threads is formed in the annular groove 3b, that is, on the inner peripheral surface of the peripheral wall 3c. The female screw 3e and the male screw 9a at the lower end of the inner cylinder 9 are screwed together. The bottom lid 3 is fitted to the lower end of the inner cylinder 9 filled with the pressure gas and the raw material 11 by fitting the lower end of the inner cylinder 9 into the annular groove 3b and pushing the pushing part 3a into the inner cylinder 9. Is hermetically and liquid tightly sealed. Moreover, the rectangular recessed part 3f for the rotation prevention with respect to the outer cylinder 6 is provided in the peripheral wall part 3c in one place or two places which oppose. The bottom lid 3 is prevented from rotating with respect to the outer cylinder 6 by fitting the recess 3 f with the convex part 7 of the outer cylinder 6 so as to be detachable.
[0043]
In addition, the recessed part and convex part for rotation prevention of the bottom cover 3 are good also considering the outer cylinder 6 side as a recessed part, and making the bottom cover 3 side a convex part.
[0044]
The raw material 11 to be filled in the inner cylinder 9 includes green tea, coffee, black tea, concentrated minerals, deep sea water extracted minerals, health foods, drugs, concentrated fruit juices, dairy products, alcohol, concentrated vegetables, soup ingredients, vitamins, sugars , Herbs, fermenting bacteria, etc. in powder, granule, tablet or liquid. Moreover, as the pressure gas, an inert gas that can safely maintain the quality of the raw material 11 is good, and examples thereof include nitrogen, helium, argon, carbon dioxide, nitrous oxide, or a mixed gas thereof.
[0045]
The bottom lid 3 is connected to the outer cylinder 6 by a flexible connecting piece 12. The upper end of the connecting piece 12 is fixed to the outer peripheral surface of the outer cylinder 6, and the lower end is fixed to the lower surface of the bottom cover 3. When the bottom cover 3 is removed from the inner cylinder 9, the connecting piece 12 is in a substantially straight state. And the bottom cover 3 is suspended from the outer cylinder 6. The bottom cover 3 can be resin-molded integrally with the outer cylinder 6 (parent cap 1) together with the connecting piece 12.
[0046]
In the bottle cap of the first embodiment, the parent cap 1, the child cap 2 and the bottom lid 3 are assembled as shown in FIG. 3, and the inner cylinder 9 is filled with the raw material 11 together with a pressure gas such as an inert gas. Then, the bottom cover 3 is sealed, and the mouth portion 6a of the outer cylinder 6 is sealed with the cap body 8 of the child cap 2, and the bottom cover 3 has its concave portion 3f connected to the convex portion 7 of the outer cylinder 6. It is made to fit and it is set as a rotation prevention state with respect to the outer cylinder 6. FIG. And when attaching the bottle cap assembled in this way to the mouth part 50a of the bottle 50 such as a plastic bottle as shown in FIG. 4, the outer cylinder 6 is inserted into the bottle mouth part 50a, and the parent cap 1 The bottle mouth part 50a is sealed with the cap body 5 by screwing the female screw 5c of the cap body 5 into the male screw of the bottle mouth part 50a and tightening it tightly.
[0047]
The bottle cap thus attached to the bottle 50 is filled with the pressure gas in the inner cylinder 9, so that intrusion of oxygen and moisture into the inner cylinder 9 can be prevented by the internal pressure, and the bottom lid 3 Since the lower end portion of the inner cylinder 9 is fitted in the annular groove 3b and screwed to the inner cylinder 9, even if the inner pressure of the pressure gas is applied to the bottom lid 3, the pressure gas from the inner cylinder 9 is applied. Can be reliably prevented.
[0048]
Between the outer cylinder 6 and the inner cylinder 9, the step 6c on the inner peripheral surface of the outer cylinder 6 and the step 9c on the outer peripheral surface of the inner cylinder 6 are close to each other and face each other. It is possible to prevent the liquid inside from penetrating and rising between the inner peripheral surface of the outer cylinder 6 and the outer peripheral surface of the inner cylinder 9.
[0049]
Between the mouth 6a of the outer cylinder 6 and the child cap 2, the sealing ring 10 of the child cap 2 is press-fitted into the outer cylinder 6 and the top 8a of the child cap 2 is the upper end of the outer cylinder 6 as described above. Since the sealing ring 10 clamps the mouth portion 6a of the outer cylinder 6 from the inside and outside with the corner portion of the body portion 8b, the air tightness and liquid tightness of the child cap 2 with respect to the mouth portion 6a of the outer cylinder 6 are extremely high. Very expensive.
[0050]
An operation associated with opening the child cap 2 in the mounting state shown in FIG. 4 will be described with reference to FIG.
When a finger is put on the trunk portion 8b of the child cap 2 and rotated in the direction of the arrow from the state shown in FIG. 9A, the annular lower peripheral edge portion 8c of the trunk portion 8b becomes unrotatable with respect to the mouth portion 6a of the outer cylinder 6. Therefore, as shown in FIG. 5B, it is separated vertically at the notch 8d and the lower peripheral edge portion 8c remains as it is, while the upper body portion 8b is rotated by screwing with the mouth portion 6a. While rising. Along with this, the inner cylinder 9 also rises while rotating, but the bottom cover 3 is prevented from rotating with respect to the outer cylinder 6 and therefore does not rotate following the inner cylinder 9 and the child cap 2 is further rotated to rotate the inner cylinder. When 9 is further raised, the male screw 9 a at the lower end of the inner cylinder 9 and the female screw 3 e of the bottom cover 3 are unscrewed, and the bottom cover 3 is released from the lower end of the inner cylinder 9.
[0051]
It should be noted that even if a force (twist) is applied to the child cap 2 so that the body portion 8b of the child cap 2 is vertically separated at the notch 8d, the parent cap 1 is firmly fixed so as not to rotate with respect to the mouth portion 50a of the bottle 50. It is tightened.
[0052]
The bottom lid 3 released from the lower end of the inner cylinder 9 is pushed down by the pressure gas filled in the inner cylinder 9 as shown in FIG. The bottom lid 3 is released from the outer cylinder 6 and falls off when the fitting with the convex portion 7 at the lower end is released. As a result, as shown in FIG. 4D, the raw material 11 in the inner cylinder 9 is jetted into the bottle 50 together with the pressure gas, and mixed with the liquid in the bottle 50. The dropped bottom lid 3 is suspended from the outer cylinder 6 when the connecting piece 12 is restored to a substantially straight state.
[0053]
To drink the liquid in the bottle 50, the child cap 2 is removed from the mouth 6a of the outer cylinder 6, the inner cylinder 9 is extracted from the outer cylinder 6, and the mouth 6a is opened. At that time, if necessary, the child cap 2 is closed again with respect to the mouth portion 6a of the outer cylinder 6 and the bottle 50 itself is shaken. After the raw material 11 is well mixed with the liquid, the child cap 2 is removed.
[0054]
It can be confirmed that the bottom lid 3 is dropped by separating the body portion 8b of the child cap 2 vertically at the cut 8d. However, when the bottle 50 can be seen through, the bottom lid 3 It can be visually confirmed that it has dropped out.
[0055]
If the parent cap 1 is removed from the bottle 50, the bottom lid 3 can be taken out together with this in the suspended state, so that the recyclability of the bottle 50 is good.
[0056]
By providing a notch 8d in the body portion 8b of the child cap 2 and making the annular lower peripheral edge portion 8c non-rotatable with respect to the mouth portion 6a of the outer cylinder 6, it is possible to prevent the child cap 2 from being loosened, If the child cap 2 is not forcibly turned until it is separated by the notch 8d, it will be confirmed that the bottom lid 3 is dropped and the raw material 11 cannot be ejected, but such a structure is not necessarily required.
[0057]
6 to 8 show a bottle cap according to a second embodiment of the present invention. FIG. 6 shows an assembled state, FIG. 7 shows a state in which the bottle is set, and FIG. 8 shows an opening state. 3, and correspond to FIG. 4 and FIG. In the first embodiment, the connecting piece 12 for connecting the bottom lid 3 to the outer cylinder 6 to be suspended is provided. However, in the second embodiment, this is omitted, and the rest is the first embodiment. Same as example.
[0058]
Therefore, in the second embodiment, the bottom lid 3 settles in the liquid in the bottle 50 without being suspended from the outer cylinder 6. 9A shows the state in which the raw material 11 is ejected by turning the child cap 2 in the opening direction, and the bottom cover 3 sinks. FIG. 9B shows the state in which the child cap 2 is closed again. (C) shows the state which is mixing the raw material 11 by shaking the bottle 50, respectively. Since the bottom lid 3 has the projection 3d, the projection 3d is given directionality when it settles in the liquid in the bottle 50.
[0059]
10 to 13 show a bottle cap according to a third embodiment of the present invention, FIG. 10 is a sectional view up to assembly, FIG. 11 is a perspective view of a bottom cover, FIG. 12 is a perspective view of a detent member, and FIG. It is sectional drawing of the operation state which opens. As shown in FIG. 10A, the bottle cap according to the third embodiment includes a rotation stopper member 4 in addition to the parent cap 1, the child cap 2, and the bottom lid 3.
[0060]
The parent cap 1 in the third embodiment is provided with a recess 7a at the lower end of the outer cylinder 6 in place of the rotation-preventing projection 7 in the first embodiment. Is the same. Further, the child cap 2 in the third embodiment is formed with a female screw 9d at the lower end of the inner peripheral surface of the inner cylinder 9 in place of the male screw 9a provided at the lower end of the outer peripheral surface of the inner cylinder 9 in the first embodiment. However, the rest is the same as the child cap of the first embodiment.
[0061]
The bottom cover 3 in the third embodiment is significantly different from that in the first embodiment, and is composed of a pushing portion 13a and a flange portion 13b as shown in FIG. 11, and on the outer periphery of the pushing portion 13a, A male screw 13c screwed with the female screw 9d is formed, an annular groove 13d is formed on the outer periphery of the flange portion 13b, and a cross-shaped groove 13e having a trapezoidal cross section is formed on the lower surface of the flange portion 13b.
[0062]
The bottom lid 3 seals the lower end opening of the inner cylinder 9 in an airtight and liquid-tight manner when the male screw 13 c is screwed into the female thread 9 d of the inner cylinder 9 and the pushing portion 13 a is pushed into the inner cylinder 9. In the screwing operation at that time, the bottom lid 3 can be rotated using the cross-shaped groove 13e. Since the outer diameter of the flange 13b of the bottom cover 3 is substantially equal to the outer diameter of the lower end of the inner cylinder 9, the inner cylinder 9 can be inserted into the outer cylinder 6 while being sealed with the bottom cover 3, and FIG. As shown in FIG. 3, when the inner cap 9 is inserted into the outer tube 6 to the maximum by covering the child cap 2 over the mouth 6 a of the outer tube 6, the bottom cover 3 comes out of the lower end opening of the outer tube 6.
[0063]
As shown in FIG. 12, the anti-rotation member 4 added in the third embodiment is integrally provided with a cross-shaped trapezoidal cross-shaped rib 14b on the inner side of the ring portion 14a and an annular protrusion on the inner peripheral surface of the ring portion 14a. The part 14c is formed, and the rectangular convex part 14d for rotation prevention is integrally protrudingly provided from the two places which the ring part 14a opposes. The detent member 4 is connected to the outer cylinder 6 by a flexible connecting piece 12. The upper end of the connecting piece 12 is fixed to the outer peripheral surface of the outer cylinder 6, and the lower end is fixed to the ring portion 14a of the anti-rotation member 4. When the connecting piece 12 is restored to a substantially straight state, the anti-rotation member 4 is removed. The cylinder 6 is suspended. The anti-rotation member 4 can be resin-molded integrally with the outer cylinder 6 (parent cap 1) together with the connecting piece 12.
[0064]
The anti-rotation member 4 is formed by combining the parent cap 1, the child cap 2 and the bottom lid 3 as shown in FIG. 10 (B), and then pressing it toward the bottom lid 3 as shown in FIG. The cross-shaped rib 14b having the trapezoidal cross section of the stopper member 4 is forcibly fitted into the cross-shaped groove 13e having the trapezoidal cross section of the bottom cover 3, and the annular protrusion 14 on the inner periphery of the rotation preventing member 4 is The annular groove 13d is forcibly fitted, and the convex portion 14d of the rotation preventing member 4 is detachably fitted to the concave portion 7a at the lower end of the outer cylinder 6.
[0065]
As a result, the anti-rotation member 4 and the bottom lid 3 are combined so as not to be separated from each other, and the anti-rotation member 4 holds the bottom lid 3 and is in a non-rotating state with respect to the outer cylinder 6.
[0066]
In the case of the bottle cap of the third embodiment, as shown in FIG. 13 (A), when the child cap 2 is turned in the direction of the arrow, the inner cylinder 9 is also rotated, leaving the annular lower peripheral edge portion 8c of the trunk portion 8b. However, the bottom cover 3 is prevented from rotating with respect to the outer cylinder 6 by the anti-rotation member 4, and therefore does not rotate following the inner cylinder 9. The child cap 2 is further rotated to further rotate the inner cylinder 9. When raised, the female screw 9d at the lower end of the inner cylinder 9 and the male screw 13c of the bottom cover 3 are unscrewed as shown in FIG. 5B, and the bottom cover 3 is released from the lower end of the inner cylinder 9. The
[0067]
The bottom lid 3 released from the lower end of the inner cylinder 9 is pushed down by the pressure gas filled in the inner cylinder 9, and the rotation preventing member 4 is also pushed down together with this, so that the convex portion 14d becomes the outer cylinder. 6 is disengaged from the recess 7 a at the lower end of 6, and the rotation preventing member 4 is released from the outer cylinder 6 and falls off while holding the bottom cover 3. As a result, as shown in FIG. 5C, the raw material 11 in the inner cylinder 9 is ejected at a stretch together with the pressure gas. The fall-off preventing member 4 that has fallen is suspended from the outer cylinder 6 while holding the bottom cover 3 by restoring the connecting piece 12 to a substantially straight state.
[0068]
In the case of the bottle cap of the third embodiment, the anti-rotation member 4 is required, but the assembly is performed after filling the inner cylinder 9 of the child cap 2 with the raw material 11 and the pressure gas and sealing with the bottom lid 3. The sealed inner cylinder 9 is inserted into the outer cylinder 6 as it is, the child cap 2 is put on the mouth portion 6a of the outer cylinder 6, and the rotation preventing member 4 is pressed toward the bottom cover 3 to complete the process. No jigs, reversing mechanism, etc. are required, and automation is easy.
[0069]
14 to 17 show a bottle cap according to a fourth embodiment of the present invention. FIGS. 14 and 15 show a state before assembly, FIG. 16 shows an assembled state, and FIG. 17 shows a state set in a bottle.
[0070]
In the bottle cap of the fourth embodiment, the bottom lid 3 is not screwed to the lower end of the inner cylinder 9 of the child cap 2 so that the lower end opening of the inner cylinder 9 can be hermetically and liquid-tightly sealed only by the fitting structure. It is a thing. That is, the female screw 3e in the annular groove 3b of the bottom cover 3 is omitted, and the cross-section of the annular groove 3b is inverted Ω, while the lower edge of the inner cylinder 9 is a protruding edge 9e that bulges outward. Sealing is performed by forcibly fitting the annular concave groove 3b having a reverse Ω cross section and the protruding edge 9e bulging outward.
[0071]
In the case of the fourth embodiment, since the bottom cover 3 is not screwed to the lower end of the inner cylinder 9, there is no need to prevent the bottom cover 3 from rotating with respect to the outer cylinder 6, and the child cap 2 is As the cylinder 9 is raised, the peripheral wall portion 3c of the bottom cover 3 comes into contact with the lower end of the outer cylinder 6 and the bottom cover 3 is restrained from further rising. The lid 3 comes off and falls off. When this falls off, the raw material 11 in the inner cylinder 9 is ejected at a stretch together with the pressure gas. The bottom lid 3 settles in the liquid in the bottle.
[0072]
In the case of the fourth embodiment as well, it is needless to say that the bottom cover 3 may be connected to the outer cylinder 5 with a connecting piece, as in the case of the above-described embodiment.
[0073]
When the body portion 8b of the child cap 2 is not provided with the annular lower peripheral edge portion 8c separated by the notch 8d, the child cap 2 is prevented from being unintentionally turned and opened in the state of being set in the bottle 50 as shown in FIG. As shown in FIG. 4, the trunk portion 8b of the child cap 2 and the trunk portion 5b of the parent cap 1 are covered with a transparent or translucent shrink film 51. The shrink film 51 is provided with a tear line 51c for vertically dividing the upper part 51a and the lower part 51b, and a tear line 51d for vertically tearing the upper part 51a. At the time of opening, after tearing the upper portion 51a along the tear line 51d, the finger is put on the trunk portion 8b of the child cap 2 and turned. Then, the shrink film 51 is separated vertically by the cut line 51c, and the upper portion 51a covering the trunk portion 8b of the child cap 2 is removed, but the lower portion 51b is as shown in FIG. The body portion 5b of the parent cap 1 remains covered. It turns out that the said bottle cap was opened by becoming such a state. This can be applied to any of the first to fourth embodiments.
[0074]
In the above embodiment, the pressure gas is sealed in the inner cylinder 9 so that the raw material 11 in the inner cylinder 9 does not deteriorate or decay due to contact with oxygen or moisture, but as shown in FIG. In addition, either or both of the oxygen absorber and the dehumidifier 21 may be enclosed in the inner cylinder 9. In that case, the oxygen scavenger or dehumidifier 21 is placed in the porous container 22 and the container 22 is press-fitted to the inner end of the inner cylinder 9. In addition to the press-fitting, a pressure gas may be enclosed.
[0075]
As shown in FIG. 21, if a discharge groove 6 e having a required length is provided from the lower end of the outer cylinder 6, the child cap 2 is extracted together with the inner cylinder 9, and the liquid in the bottle 50 is discharged from the outer cylinder 6. When pouring from the mouth part 6a, the liquid can be poured without leaving the liquid between the outer cylinder 6 and the mouth part 50a of the bottle 50.
[0076]
FIG. 22 illustrates a method for automatically performing from the assembly of the bottle cap according to the present invention to the filling of the pressure gas and the raw material and the mounting to the bottle.
In the case of the bottle caps of the first embodiment and the second embodiment, as shown in FIG. 20 (1), the parent cap 1 is inverted and the bottom lid 3 is set on the outer cylinder 5. As shown in FIG. 2B, the child cap 2 is turned upside down, and the raw material 11 is quantitatively charged from the raw material hopper 52 into the inner cylinder 9.
[0077]
As shown in FIG. 3 (3), the parent cap 1 and the child cap 2 are placed in the pressure chamber 54 of the filling machine 53, the inside of the pressure chamber 54 is evacuated by the vacuum pump 55, and then the pressure is supplied from the pressure gas supply device 56. An inert gas such as nitrogen is supplied as a gas.
[0078]
As shown in FIG. 4 (4), the child cap 2 is screwed into the parent cap 1 by the screwing device 58 while the bottom lid 3 is fixed with the jig 57 in the pressure chamber 54, and the raw material is And the inner cylinder 9 filled with the pressure gas is sealed, and then the whole is inverted.
[0079]
On the other hand, as shown in FIG. 5 (5), the bottle 50 is filled with a liquid by a bottling machine 59. Then, as shown in FIG. 6 (6), the parent cap 1 is screwed and tightened to the mouth portion 50 a of the bottle 50 with the screw capper 60. When not using screwing, the parent cap 1 is forcibly fitted to the mouth of the bottle 50 by the press capper 61 as shown in FIG.
[0080]
In the above-described embodiment, the case where the bottle portion 50a is applied to the bottle 50 having a narrowed mouth portion 50a has been described. However, the bottle cap according to the present invention has a mouth portion as shown in FIGS. It can also be applied to a wide-mouthed bottle that is the same size as the body.
[0081]
【The invention's effect】
The effects of the present invention are as follows for each claim.
<Claim 1>
Since the bottom lid is screwed into the thread portion of the inner cylinder, which is the raw material storage portion, and the lower end opening of the inner cylinder is sealed in a tightened state, the bottom lid is highly airtight. Even if the threaded portion is screwed and tightened in this way, the bottom lid is restricted from following rotation with the inner cylinder by the outer cylinder of the parent cap, so that the dropout from the inner cylinder at the time of opening is performed without any trouble.
[0082]
<Claim 2>
Since the lower end of the inner cylinder is press-fitted into the annular groove on the periphery of the bottom cover, the screw part on the bottom cover side and the screw part on the inner cylinder side can be screwed together in the annular groove. Becomes even higher.
[0083]
<Claim 3>
The anti-rotation part that prevents the bottom cover from rotating with respect to the outer cylinder is a recess provided in one of the bottom cover and the outer cylinder, and a convex part provided in the other. Since it can be detachably fitted in the length direction, it is possible to easily set the rotation of the bottom lid.
[0084]
<Claim 4>
The bottom lid is connected to the outer cylinder of the parent cap by a flexible connecting piece, and is suspended from the outer cylinder of the parent cap when it is dropped from the inner cylinder. Can be restrained from floating freely, and when the parent cap is removed from the bottle, it can be removed from the bottle together with the parent cap while the bottom lid is suspended from the outer cylinder, preventing accidental ingestion of the bottom lid it can.
[0085]
<Claim 5>
Since the bottom lid is screwed into the thread portion of the inner cylinder, which is the raw material storage portion, and the lower end opening of the inner cylinder is sealed in a tightened state, the bottom lid is highly airtight. Even if the threaded portion is screwed and tightened in this manner, the bottom lid is restricted from following rotation with the inner cylinder by the anti-rotation member and falls off together with the anti-rotation member at the time of opening, so that the omission is performed without any trouble.
[0086]
<Claim 6>
The fitting part between the rotation-preventing member and the outer cylinder is a concave part provided on one of them, and a convex part provided on the other, so that the concave part and the convex part can be fitted and removed in the length direction of the outer cylinder. Since it fits, the rotation prevention setting of the bottom cover by a rotation prevention member can be performed easily.
[0087]
<Claim 7>
When the non-rotating member is connected to the outer cylinder of the parent cap by a flexible connecting piece, and the bottom cover is removed from the inner cylinder, the anti-rotating member is suspended from the outer cylinder of the parent cap while holding the bottom lid. Therefore, after the bottom lid has fallen from the inner cylinder, free floating of the bottom lid can be restrained, and when the parent cap is removed from the bottle, the bottom lid is held on the non-rotating member and suspended from the outer cylinder with it. Since it can be taken out of the bottle together with the parent cap, the bottom lid can be prevented from being swallowed.
[0088]
<Claim 8>
When the inner cylinder of the child cap is inserted into the outer cylinder of the parent cap, and the upper end opening of the outer cylinder is sealed with the child cap, the bottom lid is sized to penetrate the outer cylinder and exit from the lower end opening. Therefore, before sealing the upper end opening of the outer cylinder with the child cap while inserting the inner cylinder into the outer cylinder, it is possible to store the raw material in the inner cylinder and seal the lower end opening with the bottom lid Therefore, it is possible to easily automate the raw material storage operation and the assembly operation of the parent cap, the child cap, the bottom lid, and the rotation stopper member.
[0089]
<Claim 9>
When pressure gas is sealed in the inner cylinder and the bottom lid is removed from the inner cylinder, the raw material in the inner cylinder is jetted into the bottle together with the pressure gas, so that oxygen and moisture enter the inner cylinder. Can be prevented by the internal pressure, the material can be prevented from being deteriorated or spoiled by contact with oxygen or moisture, and the material can be released into the bottle at once.
[0090]
<Claim 10>
Since either or both of oxygen scavengers and dehumidifiers are enclosed in the inner cylinder, it is possible to prevent deterioration or decay due to contact of raw materials with oxygen or moisture.
[0091]
<Claim 11>
When the upper end opening of the outer cylinder is closed with the child cap, a sealing ring is provided on the lower surface of the top of the child cap so as to press fit into the upper end opening and sandwich the upper end opening of the outer cylinder with the body portion of the child cap. Therefore, the airtightness and liquid tightness with respect to the upper end opening of the outer cylinder can be enhanced.
[Brief description of the drawings]
1A is a perspective view, and FIG. 1B is a cross-sectional view of a bottle cap before assembly of a first embodiment of the present invention.
2A is a perspective view, and FIG. 2B is a cross-sectional view in a similar state.
3A is a front view and FIG. 3B is a cross-sectional view in the assembled state of the embodiment.
FIG. 4 is a cross-sectional view of the bottle set in the same embodiment.
FIG. 5 is a cross-sectional view showing the opening operation state of the embodiment in the order of (A), (B), (C), and (D).
6A is a front view and FIG. 6B is a cross-sectional view of a bottle cap according to a second embodiment of the present invention in an assembled state.
FIG. 7 is a sectional view of the bottle set in the embodiment.
FIG. 8 is a cross-sectional view showing the opening operation state of the embodiment in the order of (A), (B), (C), and (D).
FIG. 9 is a perspective view showing operations from opening to drinking of the liquid in the bottle in the order of (A), (B), and (C).
FIG. 10 is a cross-sectional view of the bottle cap according to the third embodiment of the present invention in the order of (A), (B), and (C) up to its assembly.
FIG. 11 is a perspective view of a bottom lid in the same embodiment.
FIG. 12 is a perspective view of a rotation preventing member in the same embodiment.
FIG. 13 is a cross-sectional view showing the opening operation state of the embodiment in the order of (A), (B), and (C).
14A is a perspective view and FIG. 14B is a cross-sectional view showing a state before assembly of a bottle cap according to a third embodiment of the present invention.
15A is a perspective view, and FIG. 15B is a cross-sectional view in the same state.
16A is a perspective view, and FIG. 16B is a cross-sectional view in the assembled state of the embodiment.
FIG. 17 is a sectional view of the bottle set in the same embodiment.
FIG. 18 is a perspective view showing an example of use in which a bottle cap according to the present invention is covered with a shrink film.
FIG. 19 is a perspective view showing a state in which a part of the shrink film is removed.
FIG. 20 is a cross-sectional view of an embodiment in which an oxygen scavenger or a dehumidifier is sealed in an inner cylinder.
FIG. 21 is a cross-sectional view of an embodiment in which a discharge groove is provided in the outer cylinder.
FIG. 22 is an explanatory view showing an example of a method for automatically performing from the assembly of the bottle cap according to the present invention to the filling of the pressure gas and the raw material and the mounting to the bottle.
FIG. 23 is a perspective view of an embodiment applied to a wide-mouth bottle.
FIG. 24 is a cross-sectional view of the above.
[Explanation of symbols]
1 Parent cap
2 Child cap
3 Bottom cover
3a Pushing part
3b Annular groove
3c peripheral wall
3d protrusion
3e Female thread
3f recess
4 Anti-rotation member
5 Cap body
5a top
5b trunk
5c Female thread
5d knurl
6 outer cylinder
6a mouth
6b Drooping cylinder
6c Step
6d male screw
6e Draining groove
7 Convex
7a recess
8 Cap body
8a top
8b trunk
8c Lower peripheral edge
8d cut
8e Female thread
8f knurl
8g arrow
9 Inner cylinder
9a Male thread
9c Step
9d female thread
9e ridge
10 Sealing ring
11 Raw materials
12 Connecting pieces
13a Pushing part
13b Isobe
13c male screw
13b Isobe
13e Cross-shaped groove
14a Ring part
14b Cross-shaped rib
14c Annular protrusion
14d convex part
21 Deoxidizer or dehumidifier
22 containers
50 bottles
50a Bottle mouth
51 Shrink film
51a Upper part
51b Lower part
51c Cut line
51d tear line
52 Raw material hopper
53 Filling machine
54 Pressure chamber
55 Vacuum pump
56 Pressure gas supply device
57 Jig
58 Screwing device
59 Bottling Machine
60 screw capper
61 Press capper

Claims

A parent cap having an outer cylinder to be inserted into the mouth of the bottle, a child cap having an inner cylinder to be inserted into the outer cylinder and serving as a raw material storage section, and a bottom lid for sealing the lower end opening of the inner cylinder; The bottle cap can be sealed together with the upper end opening of the outer cylinder by screwing the child cap onto the outer cylinder of the parent cap. In the bottle cap in which the bottom lid is dropped from the inner cylinder by the outer cylinder of the parent cap by turning in the opening direction with respect to the outer cylinder of the cap, and the raw material in the inner cylinder is discharged into the bottle,
A screw cap is formed on the inner cylinder and the bottom cover so as to be screwed together to be tightened, and a rotation stopper is provided on the bottom cover and the outer cylinder of the parent cap so as to be detachable from each other. A bottle cap characterized in that when the base cover is rotated in the opening direction with respect to the outer cylinder of the parent cap, the bottom lid is restricted from following and rotating with the inner cylinder by the rotation-preventing portion, and falls off the inner cylinder.

An annular groove capable of press-fitting the lower end portion of the inner cylinder is formed on the periphery of the bottom lid, and a screw portion that is screwed with a screw portion of the lower end portion of the inner cylinder is formed on the inner surface of the annular groove. The bottle cap according to claim 1.

The non-rotating portion is a concave portion provided on one of the bottom lid and the outer cylinder and a convex portion provided on the other, and the concave portion and the convex portion are detachably fitted in the length direction of the outer cylinder. The bottle cap according to claim 1 or 2, wherein the bottle cap is configured to perform the above.

The bottom cover is connected to the outer cylinder of the parent cap by a flexible connecting piece, and is suspended from the outer cylinder of the parent cap when dropped from the inner cylinder. Bottle cap.

A parent cap having an outer cylinder to be inserted into the mouth of the bottle, a child cap having an inner cylinder to be inserted into the outer cylinder and serving as a raw material storage section, and a bottom lid for sealing the lower end opening of the inner cylinder; The bottle cap can be sealed together with the upper end opening of the outer cylinder by screwing the child cap onto the outer cylinder of the parent cap. In the bottle cap in which the bottom lid is dropped from the inner cylinder by the outer cylinder of the parent cap by turning in the opening direction with respect to the outer cylinder of the cap, and the raw material in the inner cylinder is discharged into the bottle,
The inner cylinder and the bottom lid are formed with screw portions that are screwed together and tightened, and a fitting portion is fitted between the bottom lid and the outer cylinder of the parent cap so that the bottom lid with respect to the outer cylinder is fitted. A rotation prevention member that regulates rotation is provided, and when the child cap is rotated in the opening direction with respect to the outer cylinder of the parent cap, the bottom lid is restricted from following rotation with the child cap by the rotation prevention member, and together with the rotation prevention member A bottle cap characterized in that it falls off from an inner cylinder and an outer cylinder.

The fitting part between the rotation-preventing member and the outer cylinder is a concave part provided on one of them, and a convex part provided on the other, so that the concave part and the convex part can be fitted and removed in the length direction of the outer cylinder. The bottle cap according to claim 5, wherein the bottle cap is fitted.

When the non-rotating member is connected to the outer cylinder of the parent cap by a flexible connecting piece, and the bottom cover is removed from the inner cylinder, the anti-rotating member is suspended from the outer cylinder of the parent cap while holding the bottom lid. The bottle cap according to claim 5 or 6, wherein

When the inner cylinder of the child cap is inserted into the outer cylinder of the parent cap, and the upper end opening of the outer cylinder is sealed with the child cap, the bottom lid is sized to penetrate the outer cylinder and exit from the lower end opening. The bottle cap according to claim 7, wherein the bottle cap is provided.

The pressure gas is enclosed in the inner cylinder, and when the bottom cover is dropped from the inner cylinder, the raw material in the inner cylinder is jetted into the bottle together with the pressure gas. Bottle cap according to crab.

The bottle cap according to any one of claims 1 to 9, wherein both or one of a deoxidizing agent and a dehumidifying agent is enclosed in the inner cylinder.

When the upper end opening of the outer cylinder is closed with the child cap, a sealing ring is provided on the lower surface of the top of the child cap so as to press fit into the upper end opening and sandwich the upper end opening of the outer cylinder with the body portion of the child cap. The bottle cap according to any one of claims 1 to 10, wherein: