JP3562775B2 - Spout for liquid container - Google Patents

Spout for liquid container Download PDF

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Publication number
JP3562775B2
JP3562775B2 JP30023094A JP30023094A JP3562775B2 JP 3562775 B2 JP3562775 B2 JP 3562775B2 JP 30023094 A JP30023094 A JP 30023094A JP 30023094 A JP30023094 A JP 30023094A JP 3562775 B2 JP3562775 B2 JP 3562775B2
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spout
cap
opening blade
blade
opening
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JPH08133324A (en
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忠昭 岩本
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Dai Nippon Printing Co Ltd
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Dai Nippon Printing Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/72—Contents-dispensing means
    • B65D5/74—Spouts
    • B65D5/746—Spouts formed separately from the container
    • B65D5/747—Spouts formed separately from the container with means for piercing or cutting the container wall or a membrane connected to said wall
    • B65D5/748—Spouts formed separately from the container with means for piercing or cutting the container wall or a membrane connected to said wall a major part of the container wall or membrane being left inside the container after the opening

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cartons (AREA)
  • Closures For Containers (AREA)

Description

【０００１】
【産業上の利用分野】
本発明は液体容器用注出口に関するものである。
【０００２】
【従来の技術】
液体を入れるゲーベルトップタイプ等の紙製容器の注出用開口に取り付ける合成樹脂製の注出口として、例えば実開昭６４−２３４７５号公報に記載されているように、筒状の注出口本体と、キャップと、注出口本体内に収容されキャップの開蓋動作に連動して容器側に突出し容器開口部の封止フィルムを突き破る開封刃を備えたものが知られている。実開昭６４−２３４７５号公報記載の注出口は、注出口本体のねじと同方向で、これのピッチより大なるピッチのねじを切った雄ねじ部をキャップ天板裏面に突設して、これに突破針（開封刃）を螺合せしめ、かつ、突破針と注出口本体との間に突破針の回転防止用係合部を形成したものである。
【０００３】
【発明が解決しようとする課題】
上記公報記載の注出口の場合、開封刃とキャップはねじで連結されているため、キャップの開蓋動作に連動して封止フィルムを突き破った開封刃は、そのまま落としきりになるのではなく、キャップを閉じたときに元の位置まで上昇する。そして、その上昇する開封刃に絡み付いて封止フィルムが引きちぎられ、それが注出口を塞いで内容物の出を悪くしたり、内容物に混じって排出されてしまうといった問題があった。また、上記公報記載の注出口以外にも、キャップの開蓋動作に連動して開封刃を動作可能とした液体容器用注出口が知られているが、いずれも構造が複雑でコスト高となるなどの問題があった。
【０００４】
本発明はこのような問題を解決するためのものであって、キャップの開蓋動作に連動して一旦開封方向に動作した開封刃をキャップから切り離して完全に突き落とすことができる構造簡単な液体容器用注出口を提供することを目的とする。
【０００５】
【課題を解決するための手段】
本発明の液体容器用注出口は、筒状注出部を有する注出口本体と、前記注出口本体の筒状注出部に取り付けるキャップと、前記注出口本体の内側に装着する筒状の開封刃とからなる液体容器用注出口において、前記注出口本体には外面に外ねじを設けるとともに、内面には中心軸と平行で前記筒状注出部出口側端面近傍の所定位置から容器取付側の端面近傍の所定位置まで延びる複数本の縦リブと、容器取付側の端面に沿って環状に延びる係止リングを設け、前記キャップには、その外筒部内面に前記注出口本体外面の外ねじと螺合可能な内ねじを設けるとともに、その外筒部の内側に前記開封刃を収納可能な間隔をおいて同心状に内筒部を設け、前記開封刃には、一端に環状配列で複数個の刃先部を設け、他端外面には前記縦リブと協動して該開封刃の回転防止用係合部を形成する係合突起を設け、また、前記開封刃を前記キャップの開蓋動作に伴って容器取付側に突出するよう移動させる連動用係合部として、前記キャップの内筒部の外面に前記注出口本体の外ねじと同方向でそれよりピッチの大きい外ねじを設けると共に前記開封刃の内面に前記キャップの内筒部外面の外ねじと軸方向に遊びをもって係合する内ねじを設け、かつ、前記注出口本体の内面の前記縦リブと容器取付側端面との間に少なくとも前記開封刃外面の係合突起より軸方向寸法が大きくて、前記開封刃を容器取付側に所定位置まで突出した状態で前記縦リブから離反させるとともに前記連動用係合部の係合を外して前記キャップから切り離す切り離し部を設けたことを特徴とする。
【０００６】
また、好ましくは、注出口本体内面の出口側の端面と縦リブとの間に、少なくとも開封刃の外面の係合突起より軸方向寸法が大きくて、所定セット位置においてキャップの天板部と縦リブの端面との間に開封刃外面の突起を収容可能な保持部を設けるとともに、縦リブの出口側端面を注出口本体軸方向内側に傾斜させ、各縦リブの出口側の端部にはその傾斜した端面に沿う開封刃係止用の半球状突起を設ける。
【０００７】
また、好ましくは、キャップの天板部内面に、開封刃の端面に当接することによって開封刃のセット位置を規定する環状突起を設ける。
【０００８】
【作用】
本発明の液体容器用注出口は、まず開封刃を注出口本体に対し出口側から挿入する。そして、開封刃外面の係合突起を注出口本体内面における縦リブの出口側に保持した状態でキャップを締める。これで注出口のセットが終わる。そして、この注出口を封止フィルムが取り付けられた容器本体の開口部周囲に超音波シール等の方法で固着する。
【０００９】
このようにして取り付けた注出口は、キャップを緩めると、開封刃が連動し、外面の係合突起が注出口本体内面の縦リブと係合した状態で軸心方向に容器取付側へ押されて、刃先部により封止フィルムを突き破る。そして、更にキャップを緩め、注出口本体から外すと、開封刃はキャップの内筒部との間の連動係合が外れるとともに外面の係合突起と注出口本体内面の縦リブの係合が外れる位置まで落ちて、外面の係合突起が係止リングに係合し、係止される。
【００１０】
このようにしてキャップの開蓋動作に連動して突き落とされた開封刃は、注出口本体の縦リブから離反するとともにキャップからも切り離される。また、この状態では開封刃は回転方向に拘束されないために外面の係合突起と注出口本体内面の縦リブの位相が簡単にずれる。そのため、その後キャップを閉じても開封刃が連動して上昇し、封止フィルムを引きちぎってしまうのを防止することができる。
【００１１】
また、注出口本体内面の出口側の端面と縦リブとの間に、少なくとも開封刃外面の係合突起より軸芯方向寸法が大きくて、所定セット位置においてキャップの天板部と縦リブの端面との間に開封刃外面の係合突起を収容可能な保持部を設けるとともに、縦リブの出口側端面を注出口本体軸芯方向内側に傾斜させ、各縦リブの出口側の端部にはその傾斜した端面に沿う開封刃係止用の半球状突起を設けた場合、注出口をセットしたときに開封刃をセット位置に確実に保持し、容器への取り付けに支障が生じないようにできる。
【００１２】
また、キャップの天板部内面に、開封刃の端面に当接して開封刃のセット位置を規定する環状突起を設けた場合、セット状態において開封刃が所定の位置に固定され、そのため、キャップの開蓋動作に連動して開封刃が容器取付側に突出するときの突出量のばらつきが少なくなり、開封が確実になる。
【００１３】
【実施例】
以下、本発明の実施例を図面に基づいて説明する。
【００１４】
図１は本発明の一実施例の液体容器用注出口を半部断面にした正面図、図２は同上実施例の注出口本体を半部断面にした正面図、図３は同上注出口本体を図２におけるＡ−Ａ線で切った断面図、図４は同上実施例のキャップを半部断面にした正面図、図５は同上実施例の開封刃を半部断面にした正面図、図６は同上開封刃の平面図、図７は同上液体容器用注出口の開封動作途中の状態を示す半部断面の正面図、図８は同上液体容器用注出口の開封動作が完了しキャップを外した状態を示す半部断面の正面図である。
【００１５】
この実施例において注出口１は、注出口本体１０と、キャップ２０と、開封刃３０とで構成されている。これら注出口本体１０，キャップ２０および開封刃３０は、例えばポリプロピレン樹脂の成形品である。
【００１６】
注出口本体１０は、筒状注出部１１とその一端外周に形成された取付用フランジ１２とからなるものである。フランジ１２は成形時には容器取付側の端面に三重の薄い環状突起１３を有するものとされている。これら環状突起１３は容器本体への取付時の溶着部を構成する。
【００１７】
注出口本体１０には、筒状注出部１１の外面のフランジ１２側に近い位置に外ねじ１４が形成されている。また、注出口本体１０の内面には、フランジ１２と反対の側の端面（出口側端面）から所定寸法だけ内側に入った位置からフランジ１２側（容器取付側）の端面から所定寸法だけ内側に入った位置まで軸心に平行に延びる断面略三角の縦リブ１５が当間隔で複数本（例えば１２本）設けられている。これら縦リブ１５は、断面楔形で、その楔形の一辺が円周方向の同じ向きで注出口本体１０の軸心に対し垂直な係合面を構成している。また、これら縦リブ１５は、出口側の端面と容器取付側の端面がそれぞれ軸芯方向内側に傾斜し、また、それら縦リブ１５の出口側の端部には、傾斜した端面に沿う半球状突起１６が形成されている。この半球状突起１６は、開封刃３０をセット位置に係止するためのものである。
【００１８】
また、注出口本体１０の内面には容器取付側の端面に沿って環状に延びる係止リング１７が設けられている。この係止リング１７は、開封刃３０を突き落とし位置に係止するためのものである。
【００１９】
キャップ２０は、天板部２１および外筒部２２からなり、外筒部２２の内面には注出口本体１０の外面の外ねじ１４と螺合可能な内ねじ２３が形成されている。また、キャップ２０には、外筒部２２の内側に開封刃３０を収納可能な間隔をおいて同心状に内筒部２４が設けられている。そして、内筒部２４の外面には注出口本体１０の外ねじ１４と同方向でそれよりピッチの大きい外ねじ２５が形成されている。また、天板部２１の内面には、内筒部２４の外側に開封刃３０のセット位置を規定するための環状突起２６が設けられ、さらにその外側に注出口本体１０の筒状注出部１１の端面に突き当たることによってキャップ２０の締め付け位置を規定する複数の円錐突起２７が設けられている。
【００２０】
開封刃３０は、筒状本体３１の一端に環状配列で複数個の刃先部３２を備えている。なお、刃先部３２は図のように高さの一定したものでもよいが、よりスムーズな開封を行えるよう位置によって高さの変化する形状としてもよい。また、筒状本体３１の他端外面には注出口本体１０の縦リブ１５と協動して開封刃３０の回転防止用係合部を形成する係合突起３３が設けられている。この係合突起３３は、注出口本体１０の縦リブ１５の本数の整数分の１の数（例えば６個）で、やはり断面楔形とされ、その楔形の一辺が縦リブ１５の係合面と対向して注出口本体１０の軸心に対し垂直な係合面を構成している。また、筒状本体３１には、内面にキャップ２０の内筒部２４の外ねじ２５に対し遊びをもって係合しこのキャップ２０側の外ねじ２５と共に連動用係合部を構成する内ねじ３４が設けられ、また、この内ねじ３４の一部にのみ干渉するよう４カ所に分けてヌキ部３５が設けられている。このヌキ部３５は、液体を注ぐ際に空気口として作用する。
【００２１】
注出口本体１０の内面の出口側端面と上記縦リブ１５との間は、注出口本体１０の筒状注出部１１にキャップ２０が取り付けられ、筒状注出部１１の端面がキャップ２０の天板部２１の内面の円錐突起２７に突き当たり、開封刃３０がキャップ２０の天板部２１の内面の環状突起２６に当接する位置まで引き込まれたセット状態において、キャップ２０の天板部２１と縦リブ１５の端面との間に開封刃３０の外面の突起３３を収容可能な保持部を構成するもので、環状突起２６と円錐突起２７と縦リブ１５および半球状突起１６とによって開封刃３０のセット位置を規定する寸法に設定されている。
【００２２】
また、注出口本体１０の内面の縦リブ１５と容器取付側端面との間は、突き落とした開封刃３０をキャップから切り離す切り離し部を構成するものであって、開封刃３０の外面の係合突起３３より軸方向寸法が大きく、開封刃３０が容器取付側に突出し注出口本体１０の係止リング１７により係止された状態では係合突起３３が縦リブ１５から離反し、かつ、開封刃３０の内面の内ねじ３４とキャップ２０の内筒部２４の外ねじ２５との係合が外れる寸法に設定されている。
【００２３】
注出口本体１０とキャップ２０と開封刃３０は所定の工程順に組み付ける。すなわち、まず開封刃３０を注出口本体１０に対し出口側から挿入する。そして、開封刃３０の外面の係合突起３３を、注出口本体１０の内面の縦リブ１５の出口側に縦リブ１５の端面と半球状突起１６によって保持し、その状態でキャップ２０を締める。その際、開封刃３０はキャップ２０と連れ回りし、注出口本体１０に対しては空回りとなる。そして注出口１が所定のセット状態となる。このとき、開封刃３０は外面の係合突起３３がキャップ２０の天板部２１内面の環状突起２６と縦リブ１５および半球状突起１６とで位置決めされた状態に保持される。そして、注出口１は、このようにセットされた状態でフランジ１２が図１に二点鎖線で示す容器本体１００の注出用開口１０１の周囲にあてがわれ、超音波シール等によって固着される。容器本体１００は例えば紙を主材とする積層構成のブランクにより形成されたゲーベルトップタイプの液体容器であって、その注出用開口１０１を内側から塞ぐように例えばポリエチレン／アルミニウム／ポリエステルといた層構成の封止フィルム１０２が溶着され、また、ポリエチレンフィルム１０３が注出用開口１０１の外側から被せられて、開口周囲と封止フィルム１０２とに溶着されている。
【００２４】
この注出口１は、キャップ２０を緩めたときにキャップ２０の内筒部２４の外ねじ２５と開封刃３０の内面の内ねじ３４とが係合し、かつ係合突起３３と注出口本体１０の縦リブ１５とが係合することによって開封刃３０がキャップ２０とは逆の方向（容器取付側）に押され、外面の突起３３が注出口本体１０の内面の縦リブ１５と係合した状態で軸方向に容器取付側へピッチの大きい動きで押し出される。そして、刃先部３２が封止フィルムを突き破る。図７はこのキャップ開蓋時の開封刃３０の動作を取り付け前の注出口単体によって再現したものである。また、図８は図７の状態からキャップ２０を更に緩め注出口本体１０から外した状態を示すもので、この状態では開封刃３０は内面の内ねじ３４がキャップ２０の内筒部２４の外ねじ２５から外れ、また、係合突起３３が注出口本体１０の内面の縦リブ１５から外れ、完全に突き落とされた状態となって、外面の係合突起３３が係止リング３２に係合し、係止される。
【００２５】
【発明の効果】
本発明の液体容器用注出口は以上のように構成されているので、簡単な構造により、キャップの開蓋動作に連動させて開封刃により自動的に封止フィルムを突き破るようにするとともに、キャップを閉じたときに開封刃が上昇し封止フィルムを引きちぎるのを防止するようにできる。
【００２６】
また、注出口本体内面の出口側の端面と縦リブとの間に、少なくとも開封刃の外面の係合突起より軸方向寸法が大きくて、所定セット位置においてキャップの天板部と縦リブの端面との間に開封刃外面の係合突起を収容可能な保持部を設けるとともに、縦リブの出口側端面を注出口本体軸方向内側に傾斜させ、また各縦リブの出口側の端部にその傾斜した端面に沿う開封刃係止用の半球状突起を設けることにより、注出口をセットするときに開封刃をセット位置に確実に保持でき、容器への取り付けに支障が生じないようにできる。
【００２７】
また、キャップの天板部内面に、開封刃の端面に当接して開封刃のセット位置を規定する環状の突起を設けることにより、セット状態において開封刃を所定の位置に固定し、キャップの開蓋動作に連動して開封刃が容器取付側に突出するときの突出量のばらつきを少なくして開封を確実なものとすることができる。
【図面の簡単な説明】
【図１】本発明の一実施例の液体容器用注出口を半部断面にした正面図。
【図２】本発明の一実施例の注出口本体を半部断面にした正面図。
【図３】本発明の一実施例の注出口本体を図２におけるＡ−Ａ線で切った断面図。
【図４】本発明の一実施例のキャップを半部断面にした正面図。
【図５】本発明の一実施例の開封刃を半部断面にした正面図。
【図６】本発明の一実施例の開封刃の平面図。
【図７】本発明の一実施例の液体容器用注出口の開封動作途中の状態を示す半部断面の正面図。
【図８】本発明の一実施例の液体容器用注出口の開封動作が完了しキャップを外した状態を示す半部断面の正面図。
【符号の説明】
１ 注出口
１０ 注出口本体
１１ 筒状注出部
１４ 外ねじ
１５ 縦リブ
１６ 半球状突起
１７ 係止リング
２０ キャップ
２２ 外筒部
２３ 内ねじ
２４ 内筒部
２５ 外ねじ
２６ 環状突起
３０ 開封刃
３２ 刃先部
３３ 係合突起
３４ 内ねじ[0001]
[Industrial applications]
The present invention relates to a liquid container spout.
[0002]
[Prior art]
As a spout made of synthetic resin to be attached to a spout opening of a paper container such as a goebel top type for containing a liquid, for example, as described in Japanese Utility Model Laid-Open Publication No. And a cap and an opening blade that is housed in the spout body and protrudes toward the container in association with the opening operation of the cap and protrudes through the sealing film at the container opening. The spout described in Japanese Utility Model Laid-Open Publication No. 64-23475 has a male threaded portion having a pitch greater than the pitch of the spout in the same direction as the screw of the spout body, protruding from the back surface of the cap top plate. In this case, a piercing needle (opening blade) is screwed together, and an engagement portion for preventing rotation of the piercing needle is formed between the piercing needle and the spout body.
[0003]
[Problems to be solved by the invention]
In the case of the spout described in the above publication, since the opening blade and the cap are connected by screws, the opening blade that pierced the sealing film in conjunction with the opening operation of the cap is not completely dropped, It rises to its original position when the cap is closed. Then, the sealing film is torn off by being entangled with the rising opening blade, and this has a problem that it blocks the spout to make the contents difficult to come out, or is mixed with the contents and discharged. In addition to the spouts described in the above publications, spouts for liquid containers in which the opening blade can be operated in conjunction with the opening operation of the cap are known, but all of these have complicated structures and increase costs. There was such a problem.
[0004]
SUMMARY OF THE INVENTION The present invention is directed to solving such a problem, and has a simple structure in which an opening blade once operated in the opening direction in conjunction with the opening operation of the cap can be separated from the cap and completely pushed down. The purpose is to provide a service outlet.
[0005]
[Means for Solving the Problems]
The liquid container spout of the present invention includes a spout main body having a cylindrical spout, a cap attached to the cylindrical spout of the spout main body, and a tubular opening mounted inside the spout main body. In the liquid container spout comprising a blade, the spout main body is provided with an external thread on the outer surface, and the inner surface is parallel to the central axis and at a predetermined position near the cylindrical spout outlet side end face on the container mounting side. A plurality of vertical ribs extending to a predetermined position near the end face of the container, a locking ring extending annularly along the end face on the container mounting side, and the cap has an outer cylindrical portion inner surface provided outside the spout body outer surface. While providing an internal screw which can be screwed with a screw, an inner cylinder portion is provided concentrically at an interval capable of storing the opening blade inside the outer cylinder portion, and the opening blade has an annular arrangement at one end. A plurality of cutting edges are provided, and the other end of the outer surface cooperates with the vertical rib. Provided an engaging protrusion which forms a rotation preventing engagement portion of the opening edge, also, the opening blade as interlocking engagement portions to move so as to protrude into the container mounting side with the lid opening operation of the cap, On the outer surface of the inner cylindrical portion of the cap, an outer screw having a larger pitch is provided in the same direction as the outer screw of the spout body, and the outer surface of the inner cylindrical portion of the cap is provided on the inner surface of the opening blade in the axial direction. An inner screw that engages with play is provided, and at least an axial dimension between the vertical rib on the inner surface of the spout body and the end surface on the container mounting side is larger than an engagement protrusion on the outer surface of the unsealing blade, and the unsealing is performed. A detaching portion is provided in which the blade is separated from the vertical rib with the blade protruding to a predetermined position on the container mounting side, and the engagement of the interlocking engagement portion is released to separate from the cap.
[0006]
Also, preferably, the axial dimension is larger than at least the engaging protrusion on the outer surface of the opening blade between the end face on the outlet side of the inner surface of the spout body and the vertical rib, and the top plate portion of the cap and the vertical portion at the predetermined set position are vertically aligned. A holding portion capable of accommodating the protrusion on the outer surface of the opening blade is provided between the end surface of the rib and the outlet side end surface of the vertical rib is inclined inward in the spout body axial direction, and the outlet side end of each vertical rib is provided at the outlet side end of each vertical rib. A hemispherical projection is provided along the inclined end surface for locking the opening blade.
[0007]
Preferably, an annular projection is provided on the inner surface of the top plate portion of the cap to define the setting position of the opening blade by contacting the end surface of the opening blade.
[0008]
[Action]
In the liquid container spout of the present invention, first, an opening blade is inserted into the spout main body from the outlet side. Then, the cap is tightened while the engagement protrusion on the outer surface of the opening blade is held on the outlet side of the vertical rib on the inner surface of the spout body. This completes the spout set. Then, the spout is fixed to the periphery of the opening of the container body to which the sealing film is attached by a method such as ultrasonic sealing.
[0009]
When the cap is loosened, the opening blade is interlocked with the spout installed in this way, and the engaging protrusion on the outer surface is pushed toward the container mounting side in the axial direction with the engaging protrusion on the outer surface engaged with the vertical rib on the inner surface of the spout body. Then, the sealing film is pierced by the cutting edge. When the cap is further loosened and removed from the spout main body, the opening blade loses the interlocking engagement with the inner cylindrical portion of the cap, and the engaging projection on the outer surface and the vertical rib on the inner surface of the spout main body disengage. After dropping to the position, the engaging projections on the outer surface engage the locking ring and are locked.
[0010]
The opening blade pushed down in conjunction with the opening operation of the cap in this manner separates from the vertical rib of the spout body and is also separated from the cap. Also, in this state, the phase of the engaging projections on the outer surface and the vertical ribs on the inner surface of the spout body are easily shifted since the opening blade is not restrained in the rotating direction. Therefore, even if the cap is closed thereafter, it is possible to prevent the opening blade from rising in conjunction therewith and tearing off the sealing film.
[0011]
In addition, between the end face on the outlet side of the inner surface of the spout body and the longitudinal rib, the dimension in the axial direction is larger than at least the engaging projection on the outer surface of the opening blade, and the top plate part of the cap and the end face of the longitudinal rib at a predetermined set position. And a holding portion capable of accommodating the engagement protrusion on the outer surface of the opening blade is provided, and the outlet side end face of the vertical rib is inclined inward in the axial direction of the spout body, and the outlet side end of each vertical rib is provided at the outlet side end of each vertical rib. When a hemispherical projection for locking the opening blade is provided along the inclined end surface, the opening blade can be securely held at the set position when the spout is set, so that there is no hindrance to attachment to the container. .
[0012]
In addition, when an annular projection is provided on the inner surface of the top plate portion of the cap to abut the end face of the opening blade to define the setting position of the opening blade, the opening blade is fixed at a predetermined position in the set state, and therefore, When the opening blade protrudes toward the container mounting side in conjunction with the opening operation, the variation in the amount of protrusion is reduced, and the opening is ensured.
[0013]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0014]
FIG. 1 is a front view of a liquid container spout according to one embodiment of the present invention in a half section, FIG. 2 is a front view of a spout body of the embodiment in a half section, and FIG. FIG. 4 is a cross-sectional view taken along line AA in FIG. 2, FIG. 4 is a front view in which the cap of the embodiment is a half section, FIG. 5 is a front view in which the opening blade of the embodiment is in a half section. 6 is a plan view of the opening blade of the same, FIG. 7 is a front view of a half section showing the state of the opening of the liquid container spout during the opening operation, and FIG. FIG. 4 is a front view of a half-section showing a detached state.
[0015]
In this embodiment, the spout 1 includes a spout main body 10, a cap 20, and an opening blade 30. The spout body 10, the cap 20, and the opening blade 30 are molded products of, for example, polypropylene resin.
[0016]
The spout body 10 comprises a cylindrical spout 11 and a mounting flange 12 formed on the outer periphery of one end thereof. At the time of molding, the flange 12 has a triple thin annular projection 13 on the end face on the container mounting side. These annular projections 13 constitute a welded portion when attached to the container body.
[0017]
An external thread 14 is formed in the outlet main body 10 at a position close to the flange 12 side of the outer surface of the tubular outlet 11. In addition, the inner surface of the spout body 10 is located at a predetermined distance from the end face on the side opposite to the flange 12 (outlet end face) and a predetermined distance from the end face on the flange 12 side (container mounting side). A plurality of (for example, twelve) vertical ribs 15 having a substantially triangular cross section extending in parallel with the axis to the position where they are inserted are provided at equal intervals. These vertical ribs 15 are wedge-shaped in cross section, and one side of the wedge shape has the same circumferential direction and constitutes an engagement surface perpendicular to the axis of the spout body 10. In addition, these vertical ribs 15 each have an end face on the outlet side and an end face on the container mounting side that are inclined inward in the axial direction, and the end parts on the exit side of these vertical ribs 15 have hemispherical shapes along the inclined end faces. A projection 16 is formed. The hemispherical projection 16 is for locking the opening blade 30 at the set position.
[0018]
A locking ring 17 is provided on the inner surface of the spout body 10 so as to extend annularly along the end face on the container mounting side. This locking ring 17 is for locking the opening blade 30 at the pushed-down position.
[0019]
The cap 20 includes a top plate portion 21 and an outer tube portion 22, and an inner screw 23 that can be screwed with the outer screw 14 on the outer surface of the spout body 10 is formed on the inner surface of the outer tube portion 22. In addition, the cap 20 is provided with an inner cylindrical portion 24 concentrically inside the outer cylindrical portion 22 with an interval capable of storing the unsealing blade 30. An outer screw 25 having a larger pitch in the same direction as the outer screw 14 of the spout body 10 is formed on the outer surface of the inner cylindrical portion 24. On the inner surface of the top plate portion 21, an annular projection 26 for defining the setting position of the unsealing blade 30 is provided outside the inner cylindrical portion 24, and further on the outside thereof, the cylindrical pouring portion of the spout body 10 is provided. A plurality of conical projections 27 are provided to define the tightening position of the cap 20 by abutting the end face of the conical projection 11.
[0020]
The unsealing blade 30 has a plurality of blade portions 32 in an annular arrangement at one end of a cylindrical main body 31. The cutting edge 32 may have a constant height as shown in the figure, but may have a shape whose height changes depending on the position so that the opening can be performed more smoothly. On the outer surface of the other end of the cylindrical body 31, an engagement protrusion 33 is provided which forms an engagement portion for preventing rotation of the unsealing blade 30 in cooperation with the vertical rib 15 of the spout body 10. The number of the engaging projections 33 is an integral number (for example, six) of the number of the vertical ribs 15 of the spout body 10, and is also wedge-shaped in cross-section. Opposing surfaces constitute an engagement surface perpendicular to the axis of the spout body 10. Further, the cylindrical body 31 has an inner screw 34 which is engaged with the outer screw 25 of the inner cylindrical portion 24 of the cap 20 on the inner surface with play and forms an interlocking engaging portion together with the outer screw 25 on the cap 20 side. In addition, a cutout portion 35 is provided at four locations so as to interfere with only a part of the inner screw 34. The cutout portion 35 functions as an air port when pouring a liquid.
[0021]
A cap 20 is attached to the cylindrical spout 11 of the spout main body 10 between the outlet side end face of the inner surface of the spout main body 10 and the vertical rib 15, and the end face of the cylindrical spout 11 is formed by the cap 20. In the set state in which the opening blade 30 abuts against the conical protrusion 27 on the inner surface of the top plate portion 21 and is brought into contact with the annular protrusion 26 on the inner surface of the top plate portion 21 of the cap 20, the top plate portion 21 of the cap 20 A holding portion capable of accommodating the projection 33 on the outer surface of the opening blade 30 between the end surface of the vertical rib 15 and the annular blade 26, the conical projection 27, the vertical rib 15 and the hemispherical projection 16. Are set to dimensions that define the set position of
[0022]
Further, between the vertical rib 15 on the inner surface of the spout body 10 and the end face on the container mounting side, a separating portion for separating the pushed-down opening blade 30 from the cap is formed, and an engagement protrusion on the outer surface of the opening blade 30 is formed. In the state where the opening blade 30 is larger in the axial direction than the opening 33, and the opening blade 30 projects to the container mounting side and is locked by the locking ring 17 of the spout body 10, the engaging projection 33 separates from the vertical rib 15 and the opening blade 30 is opened. The inner screw 34 on the inner surface of the cap 20 and the outer screw 25 of the inner cylindrical portion 24 of the cap 20 are set to have dimensions that disengage the engagement.
[0023]
The spout body 10, the cap 20, and the opening blade 30 are assembled in a predetermined process order. That is, first, the opening blade 30 is inserted into the spout body 10 from the outlet side. Then, the engaging projection 33 on the outer surface of the opening blade 30 is held on the outlet side of the vertical rib 15 on the inner surface of the spout body 10 by the end face of the vertical rib 15 and the hemispherical projection 16, and the cap 20 is tightened in this state. At that time, the opening blade 30 rotates together with the cap 20, and idles with respect to the spout body 10. Then, the spout 1 is in a predetermined set state. At this time, the unsealing blade 30 is held in a state in which the engagement protrusion 33 on the outer surface is positioned by the annular protrusion 26 on the inner surface of the top plate portion 21 of the cap 20, the vertical rib 15, and the hemispherical protrusion 16. Then, with the spout 1 set in this manner, the flange 12 is applied to the periphery of the spouting opening 101 of the container body 100 shown by the two-dot chain line in FIG. 1 and fixed by an ultrasonic seal or the like. . The container main body 100 is, for example, a gobel-top type liquid container formed of a laminated blank mainly made of paper, and is made of, for example, polyethylene / aluminum / polyester so as to close the pouring opening 101 from the inside. The sealing film 102 having the configuration is welded, and the polyethylene film 103 is covered from the outside of the pouring opening 101, and is welded to the periphery of the opening and the sealing film 102.
[0024]
When the cap 20 is loosened, the outer screw 25 of the inner cylindrical portion 24 of the cap 20 and the inner screw 34 of the inner surface of the unsealing blade 30 engage when the cap 20 is loosened. The opening blade 30 is pushed in the opposite direction (container mounting side) from the cap 20 by the engagement of the vertical rib 15 with the vertical rib 15, and the projection 33 on the outer surface is engaged with the vertical rib 15 on the inner surface of the spout body 10. In this state, it is pushed out with a large pitch to the container mounting side in the axial direction. Then, the blade edge portion 32 breaks through the sealing film. FIG. 7 is a view in which the operation of the opening blade 30 at the time of opening the cap is reproduced by a single spout before mounting. FIG. 8 shows a state in which the cap 20 is further loosened from the state of FIG. 7 and is detached from the spout body 10. In this state, the opening blade 30 has the inner screw 34 on the inner surface outside the inner cylindrical portion 24 of the cap 20. The engagement protrusion 33 is disengaged from the screw 25 and the engagement protrusion 33 is disengaged from the vertical rib 15 on the inner surface of the spout body 10, and is completely pushed down. The engagement protrusion 33 on the outer surface is engaged with the locking ring 32. Is locked.
[0025]
【The invention's effect】
Since the liquid container spout of the present invention is configured as described above, the simple structure allows the opening blade to automatically break through the sealing film in conjunction with the opening operation of the cap, and the cap When the cover is closed, it is possible to prevent the opening blade from rising and tearing the sealing film.
[0026]
In addition, between the end face on the outlet side of the inner surface of the spout body and the vertical rib, the axial dimension is at least larger than the engagement protrusion on the outer surface of the opening blade, and the top plate portion of the cap and the end face of the vertical rib at a predetermined set position. And a holding portion capable of accommodating the engaging projections on the outer surface of the opening blade is provided, and the outlet end surface of the vertical rib is inclined inward in the axial direction of the spout body, and the outlet end of each vertical rib is provided at the outlet end thereof. By providing the hemispherical projection for locking the opening blade along the inclined end surface, the opening blade can be securely held at the set position when the spout is set, so that there is no trouble in mounting the opening blade on the container.
[0027]
In addition, by providing an annular projection on the inner surface of the top plate portion of the cap to abut the end face of the opening blade to define the setting position of the opening blade, the opening blade is fixed at a predetermined position in the set state, and the cap is opened. Variations in the amount of protrusion when the opening blade protrudes toward the container mounting side in conjunction with the lid operation can be reduced, and the opening can be reliably performed.
[Brief description of the drawings]
FIG. 1 is a front view of a liquid container spout according to an embodiment of the present invention in a half section.
FIG. 2 is a front view of a spout main body according to an embodiment of the present invention in a half section.
FIG. 3 is a cross-sectional view of the spout main body according to one embodiment of the present invention, taken along line AA in FIG. 2;
FIG. 4 is a front view of the cap according to the embodiment of the present invention in a half section.
FIG. 5 is a front view showing a half section of the opening blade according to the embodiment of the present invention.
FIG. 6 is a plan view of an opening blade according to an embodiment of the present invention.
FIG. 7 is a front view of a half section showing a liquid container spout according to an embodiment of the present invention during the opening operation.
FIG. 8 is a front view of a half section showing a state in which the opening operation of the liquid container spout of the embodiment of the present invention is completed and the cap is removed.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Outlet 10 Outlet main body 11 Cylindrical pouring part 14 Outer screw 15 Vertical rib 16 Hemispherical protrusion 17 Locking ring 20 Cap 22 Outer tube part 23 Inner screw 24 Inner tube part 25 Outer screw 26 Annular protrusion 30 Opening blade 32 Blade edge 33 Engagement projection 34 Internal screw

Claims (3)

筒状注出部を有する注出口本体と、前記注出口本体の筒状注出部に取り付けるキャップと、前記注出口本体の内側に装着する筒状の開封刃とからなる液体容器用注出口において、前記注出口本体には外面に外ねじを設けるとともに、内面には中心軸と平行で前記筒状注出部出口側端面近傍の所定位置から容器取付側の端面近傍の所定位置まで延びる複数本の縦リブと、容器取付側の端面に沿って環状に延びる係止リングを設け、前記キャップには、その外筒部内面に前記注出口本体外面の外ねじと螺合可能な内ねじを設けるとともに、その外筒部の内側に前記開封刃を収納可能な間隔をおいて同心状に内筒部を設け、前記開封刃には、一端に環状配列で複数個の刃先部を設け、他端外面には前記縦リブと協動して該開封刃の回転防止用係合部を形成する係合突起を設け、また、前記開封刃を前記キャップの開蓋動作に伴って容器取付側に突出するよう移動させる連動用係合部として、前記キャップの内筒部の外面に前記注出口本体の外ねじと同方向でそれよりピッチの大きい外ねじを設けると共に前記開封刃の内面に前記キャップの内筒部外面の外ねじと軸方向に遊びをもって係合する内ねじを設け、かつ、前記注出口本体の内面の前記縦リブと容器取付側端面との間に少なくとも前記開封刃外面の係合突起より軸方向寸法が大きくて、前記開封刃を容器取付側に所定位置まで突出した状態で前記縦リブから離反させるとともに前記連動用係合部の係合を外して前記キャップから切り離す切り離し部を設けたことを特徴とする液体容器用注出口。In a liquid container spout comprising a spout main body having a cylindrical spout, a cap attached to the cylindrical spout of the spout main body, and a tubular opening blade mounted inside the spout main body. An external screw is provided on the outer surface of the spout body, and a plurality of the inner surfaces extend parallel to the central axis from a predetermined position near the end surface on the outlet side of the cylindrical pouring portion to a predetermined position near the end surface on the container mounting side. And a locking ring extending annularly along the end face on the container mounting side, and the cap is provided on the inner surface of the outer cylinder portion with an internal screw which can be screwed with the external screw on the outer surface of the spout body. At the same time, an inner cylindrical portion is provided concentrically inside the outer cylindrical portion at an interval capable of storing the opening blade, and the opening blade is provided with a plurality of cutting edges in an annular arrangement at one end, and the other end. On the outer surface, in cooperation with the vertical rib, an engagement portion for preventing rotation of the opening blade is provided. Forming an engaging protrusion provided for, also, the said opening blade as interlocking engagement portions to move so as to protrude into the container mounting side with the lid opening operation of the cap, the outer surface of the inner cylindrical portion of the cap Note An external screw having a larger pitch in the same direction as the external screw of the outlet body is provided, and an internal screw is provided on the inner surface of the opening blade so as to engage with the external screw on the outer surface of the inner cylindrical portion of the cap with play in the axial direction , and An axial dimension is larger than at least the engagement protrusion on the outer surface of the unsealing blade between the vertical rib on the inner surface of the spout body and the end surface on the container mounting side, and the unsealing blade protrudes to a predetermined position on the container mounting side. A spout for a liquid container, further comprising a separating portion for separating from the vertical rib in a state and disengaging the interlocking engaging portion and separating from the cap. 前記注出口本体の内面の前記出口側の端面と前記縦リブとの間には、少なくとも前記開封刃の外面の係合突起より軸方向寸法が大きくて、所定セット位置において前記キャップの天板部と前記縦リブの端面との間に前記開封刃外面の突起を収容可能な保持部を設けるとともに、前記縦リブの前記出口側端面を該注出口本体軸方向内側に傾斜させ、各縦リブの前記出口側の端部にはその傾斜した端面に沿う開封刃係止用の半球状突起を設けた請求項１記載の液体容器用注出口。An axial dimension is larger at least than an engagement protrusion on an outer surface of the unsealing blade between an end surface on the outlet side of the inner surface of the spout body and the vertical rib, and a top plate portion of the cap at a predetermined set position A holding portion capable of accommodating the protrusion of the outer surface of the opening blade is provided between the end face of the vertical rib and the end face of the vertical rib, and the outlet side end face of the vertical rib is inclined inward in the axial direction of the spout main body. The spout for a liquid container according to claim 1, wherein a hemispherical projection for locking the opening blade is provided along the inclined end surface at the end on the outlet side. 前記キャップの天板部の内面に、前記開封刃の端面に当接することによって該開封刃のセット位置を規定する環状突起を設けた請求項２記載の液体容器用注出口。3. The spout for a liquid container according to claim 2 , wherein an annular projection is provided on an inner surface of a top plate portion of the cap to abut on an end surface of the opening blade to define a setting position of the opening blade.
JP30023094A 1994-11-08 1994-11-08 Spout for liquid container Expired - Fee Related JP3562775B2 (en)

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KR100814483B1 (en) * 2002-02-22 2008-03-17 노희권 The cutting apparatus of sealed beverage vessel
JP2005510425A (en) * 2001-11-27 2005-04-21 ロ・ヘクウォン Container opening and closing device
KR100998252B1 (en) * 2002-10-17 2010-12-07 노희권 The cutting apparatus of sealed beverage vessel
WO2006062357A1 (en) 2004-12-09 2006-06-15 Hee Kwon Rho Vessel cap and system for manufacturing the same
KR100655892B1 (en) * 2005-11-18 2006-12-11 노희권 Closure of vessel and manufacturing process for same
DE102006016113B3 (en) * 2006-04-04 2007-08-23 Sig Technology Ag Reclosable pouring unit for e.g. beverage package, has cams extending from upper edges of cutting unit, such that lower edges with thread sections of internal thread form stop unit for cutting unit pressed in inner side of frame
BR112023026021A2 (en) * 2021-07-29 2024-02-27 Tetra Laval Holdings & Finance OPENING DEVICE FOR A PACKAGE, AND, PACKAGING

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