JP4530454B2 - Container with cap - Google Patents

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Publication number
JP4530454B2
JP4530454B2 JP34378299A JP34378299A JP4530454B2 JP 4530454 B2 JP4530454 B2 JP 4530454B2 JP 34378299 A JP34378299 A JP 34378299A JP 34378299 A JP34378299 A JP 34378299A JP 4530454 B2 JP4530454 B2 JP 4530454B2
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Japan
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thread
cap
mouth
container
engagement
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JP2001158453A (en
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俊三 宮崎
力 四宮
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Universal Can Corp
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Universal Can Corp
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【0001】
【発明の属する技術分野】
本発明は、キャップが口部に着脱されることで密封・開封されるキャップ付き容器に関し、特に、炭酸飲料水等を内容物とするために内部が陽圧となりうるキャップ付き容器に関する。
【0002】
【従来の技術】
炭酸飲料水や清涼飲料水等の販売に際し、キャップにより密封されるキャップ付き容器(以下、適宜「容器」という。)が広く利用されている。この容器は、略有底円筒状の胴体と、胴体に縮径されながら連設され上方に開口した略円筒状の口部と、口部の外周面に設けられたオスネジ部とより構成されている。また、この容器は、天板部と、天板部の周縁から下方に延設された円筒部と、円筒部の内周面に設けられたメスネジ部とより構成されている略有天円筒状のキャップを備えている。前記構成の容器は、オスネジ部及びメスネジ部を介してキャップが口部に対して螺着され、キャップの天板部により口部が閉塞されることで密封される。一方、前記構成の容器は、密封状態からキャップが口部に対して回転され、メスネジ部がオスネジ部に対して螺進し、キャップが口部に対して上昇することで密封が解除される。
【0003】
ところで、容器の口部に直接口をつけたときの内容物の飲みやすさや、コップへの内容物の注ぎやすさ等を考慮すると、口部を拡径してある程度の広口とすることが好ましい場合がある。しかしながら、口部を広口とすると、口部のオスネジ部とキャップのメスネジ部との螺着時の接触面積が大きくなるため、容器の開封に比較的大きな力を要することとなり、使い勝手が悪くなるおそれがある。
【0004】
そこで、オスネジ部に代えて口部の外周面に複数の係合スレッドを設け、メスネジ部に代えてキャップの内周面に複数のラグを設け、複数のラグを複数の係合スレッドに係合させ、キャップの天板部により口部を閉塞することで密封されるように構成された容器を用いることが考えられる。かかる構成の容器においては、口部の係合スレッドとキャップのラグとの接触面積が小さい。従って、密封状態からキャップをわずかな力で回転させるだけで、ラグと係合スレッドとの係合が解除されて密封状態が解除される。
【0005】
しかし、容器内に炭酸飲料水が入れられている等の理由によって容器内が陽圧となった状態でキャップが口部に対して回転され、ラグと係合スレッドとの係合が解除された場合、次のような不都合が生じる。すなわち、この場合、容器内のガスが急激に噴出するとともに噴出音が生じ、利用者に不快を与えるおそれがあるとともに、このガスによりキャップが上方に押し上げられて口部から勢いよく外れるおそれがある。
【0006】
【発明が解決しようとする課題】
かかる背景に鑑みて、本発明は、陽圧状態の容器を開封するときの容器内のガスの急激な噴出による噴出音の防止、及びキャップが口部から勢いよく外れることを防止可能なキャップ付き容器を提供することを解決課題とする。
【0007】
【課題を解決するための手段】
本発明は、略円形の天板部と、該天板部の周縁より下方に延びる円筒部と、該円筒部の内径方向に突出する複数のラグとを備えたキャップにより、外周面に沿って複数のスレッドが設けられた略円筒状の口部が閉蓋され、該ラグが該スレッドに係合するとともに、該口部が該天板部に閉塞されることで密封されるキャップ付き容器に関する。
【0008】
前記課題を解決するための本発明の第1態様のキャップ付き容器は、前記スレッドは、水平に延びて形成された係合スレッドと、該係合スレッドの左端部から下方に延びて形成されたストッパと、該係合スレッドの右端部から斜め上方に延びた後、該係合スレッドより上方で右に向って水平に延びて形成された案内スレッドを有し、前記スレッドは、前記口部の直径を境として一方のスレッドと他方のスレッドが形成され、前記一方のスレッドの係合スレッドは、他方のスレッドの係合スレッドと比較して前記ストッパからの距離が延長され、前記一方のスレッドと前記他方のスレッドは、前記一方のスレッドの係合スレッドに前記ラグが係合しているときに、前記他方のスレッドの係合スレッドと前記ラグとの係合が解除されて、前記キャップと前記口部との間に微小間隙が付与されるように前記口部の外周面に形成されていることを特徴とする。
【0009】
前記構成の容器によれば、密封状態からキャップが口部の周りに回転される場合に、口部の直径を境として、一方のスレッドの係合スレッドとラグとの係合は解除されてラグが上昇自在となり、他方のスレッドの係合スレッドとラグとは係合されている状態になる。そして、かかる状態で容器内が陽圧となっている場合、キャップはこの圧力により上昇自在のラグの側が上昇して傾斜する。
【0010】
このとき、キャップと口部との間に微小間隙が生じるので、容器内が陽圧であった場合、この微小間隙より容器内のガスが徐々に抜け出ることができ、陽圧状態が徐々に解除される。このため、容器内のガスの急激な噴出による噴出音を防止し、且つ、キャップが口部から勢いよく外れることを防止することができる。なお、しかる後、キャップが開蓋方向に回転されることにより口部から取り外されて容器が完全に開封される。
【0013】
なお、第2態様のキャップ付き容器では、前記スレッドは、水平に延びて形成された係合スレッドと、該係合スレッドの右端部から斜め上方に延びた後、該係合スレッドより上方で右に向って水平に延びる規制部が形成され、更に斜め上方に延びた後、上方で右に向って水平に延びるように形成された案内スレッドとを有し、前記規制部は、密封状態から前記キャップが前記口部の周りに回転されて前記ラグと前記係合スレッドとの係合が解除され、該キャップが該口部に対して上昇したとき、該ラグの上昇を規制して該キャップと該口部との間に微小間隙が付与されるように前記口部の外周面に形成されている。
【0014】
前記構成の容器によれば、密封状態からキャップが口部の周りに回転される場合に、ラグが係合スレッドとの係合から解放されて上昇する。規制部によりその上昇が規制されたとき、キャップと口部との間に微小間隙が生じる。規制部は、係合スレッドの右端部から斜め上方に延びた後、係合スレッドより上方で右に向って水平に延びて、更に斜め上方に延びた後、上方で右に向って水平に延びるように形成された案内スレッドに連続する。従って、ラグは規制部及び案内スレッドと係合するため、容器内が陽圧であった場合、この微小間隙より容器内のガスが徐々に抜け出ることができ、ラグの上昇が規制部により規制され案内スレッドに係合している間に陽圧状態が徐々に解除される。このため、容器内のガスの急激な噴出による噴出音を防止し、且つ、キャップが口部から勢いよく外れることを防止することができる。
【0016】
【発明の実施の形態】
本発明のキャップ付き容器の実施形態について図面を用いて説明する。図1は第1実施形態のキャップ付き容器の要部の構成説明図であり、図2は第1実施形態のキャップ付き容器の機能説明図であり、図3は第1実施形態のキャップ付き容器の概念的な機能説明図であり、図4は第2実施形態のキャップ付き容器の要部の構成説明図であり、図5は第2実施形態のキャップ付き容器の機能説明図である。
【0017】
まず、本発明の第1実施形態の容器について、図1、図2及び図3を用いて説明する。図1に示す第1実施形態の容器は、金属より形成されたキャップ1により、上方に開口する略円筒状の口部2が閉蓋・開蓋されることで密封・開封される。キャップ1は、略円形の天板部3と、天板部3の周縁より下方に延びる円筒部4と、円筒部4の内径方向に突出する4つのラグ5とから構成されている。また、天板部3の裏側にはポリエチレン等の軟質素材よりなる略円盤状のシール材6が設けられている。
【0018】
図3に展開して示すように口部2には、キャップ1の4つのラグ5に対応してその外周面に沿って延びる4つのスレッド7が突設されている。スレッド7は、水平に延びて形成された係合スレッド8と、係合スレッド8の左端部(閉蓋方向側の端部)から下方に延びて形成されたストッパ9と、係合スレッド8の右端部(開蓋方向側の端部)から右斜め上方に延びた後、係合スレッド8より上方で右に向かって水平に延びて形成された案内スレッド10とより構成されている。スレッド7は、口部2の直径を境として一方のスレッドと他方のスレッドが形成され、一方(図3の右側)のスレッドにある2つの係合スレッド8は、他方(図3の左側)のスレッドにある2つの係合スレッド8と比較してストッパ9からの距離が延長されている。
【0019】
図3の右側(一方のスレッド)の2つの係合スレッド8には延長部分が形成されている(以下、第1規制部11と称す。)図3の左側(他方のスレッド)の2つの係合スレッド8には連続する案内スレッド10の傾斜部分が形成されている(以下、第2規制部12と称す。)。図3の右側の2つの案内スレッド10の水平部分は、図3の左側の案内スレッド10の水平部分より短い。第規制部12の下縁部の高さ(本発明の「第2の高さ」)は、係合スレッド8の下縁部の高さ、すなわち、第1規制部11の下縁部の高さ(本発明の「第1の高さ」)より上方に位置している。
【0020】
前記構成の容器を密封するとき、キャップ1により口部2が閉蓋され、キャップ1が閉蓋方向(図中左)に回転される。このとき、まず、ラグ5が案内スレッド10の下縁部に沿って左に水平移動してから左斜め下方に向かって移動し、係合スレッド8の下縁部へと案内される。
【0021】
次に、ラグ5が係合スレッド8の下縁部に至ることで両者は係合状態となるが、ラグ5はなおも係合スレッド8の下縁部に沿って左に水平移動し、ラグ5がストッパ9に当接する。これによりキャップ1の閉蓋方向への回転が規制される。ラグ5が係合スレッド8の下縁部まで下降することにより、キャップ1が下降し、これにより図1に示すように天板部3に圧迫されたシール材6が、口部2の上端周縁部に圧接されて容器が密封される。
【0022】
ここで、容器内が陽圧となっている状態で、キャップ1が開蓋方向(図中右)に回転された場合について、図2及び図3を用いて説明する。この場合、4つのラグ5が係合スレッド8の下縁部に沿って開蓋方向に水平移動する。そして、図3の側の2つのラグ5が仮想線5aで示す位置へ至り、係合スレッド8との係合が解除される。一方、このとき、図3の右側の2つのラグ5が仮想線5bで示す位置にあって、第1規制部11の下縁部に当接し、これにより当該2つのラグ5の上昇が第1の高さで規制される。すなわち、キャップ1は、その直径を境として上昇が規制されている2つのラグ5と、上昇自在の2つのラグ5とが併存している状態となる。従って、キャップ1は容器内の圧力により図2に白矢印で示すように上昇自在のラグ5の側を押し上げられて傾斜する。このとき、図3の左側の2つのラグ5は仮想線5cで示す位置に至り、案内スレッド10の傾斜部分を構成する第2規制部12の下縁部に当接する。これにより、当該2つのラグ5の上昇が第1の高さより上方にある第2の高さで規制され、キャップ1の傾斜が規制される。
【0023】
このとき、図2に示すようにキャップ1のシール材6と口部2の上端周縁部との間に微小間隙cが生じる。この微小間隙cから容器内のガスが徐々に抜け出ることができ、陽圧状態が徐々に解除される。このため、容器内のガスの急激な噴出による噴出音を防止し、且つ、キャップ1が口部2から勢いよく外れることを防止することができる。
【0024】
かかる状態からキャップ1が開蓋方向に回転されると、ラグ5が案内スレッド10の下縁部に沿って案内され、しかる後にすべてのラグ5が案内スレッド10の左端部から外れたとき、キャップ1が口部2から取り外される。
【0025】
続いて、本発明の第2実施形態の容器について、図4及び図5を用いて説明する。図4に示す第2実施形態の容器は、スレッド7が全て同一の形状であり、また、案内スレッド10の傾斜部分の途中に水平部分が形成されている以外の点では第1実施形態とほぼ同様の構成なので、同一の符号を用いるとともに説明を省略する。案内スレッド10の傾斜部分の途中に形成された水平部分は、係合スレッド8よりわずかに上方に形成されており、本発明の規制部13を構成する。
【0026】
前記構成の容器において、内部が陽圧の状態からキャップ1が開蓋方向(図中右)に回転されたとき、図5に矢印で示すようにラグ5が係合スレッド8の下縁部に沿って水平移動する。続いて、ラグ5は案内スレッド10の左端部に至り、係合スレッド8との係合が解除されてから、案内スレッド10の下縁部に沿って右斜め上方に移動し始める。そして、ラグ5が案内スレッド10の傾斜部分の途中に至り、規制部13の下縁部に当接することでラグ5の上昇が規制される。このとき、図5に示すようにキャップ1に伴いシール材6がわずかに上昇し、口部2の上端周縁部との間に微小間隙cが生じている。従って、容器内が陽圧であった場合、この微小間隙cより容器内のガスが徐々に抜け出ることができ、ラグ5の上昇が規制部13により規制されている間に陽圧状態が徐々に解除される。このため、容器内のガスの急激な噴出による噴出音を防止し、且つ、キャップ1が口部2から勢いよく外れることを防止することができる。
【0027】
なお、前記2つの実施形態ではキャップ1が金属より形成されているが、他の実施形態として、プラスチック等の他の素材より形成されてもよい。また、キャップ1の素材が、天板部3が口部2の上端周縁部に全周にわたり圧接して容器を確実に密封することができるものであれば、シール材6を省略してもよい。
【0028】
前記2つの実施形態ではスレッド7が4つ設けられているが、容器の密封が可能であればその数はいくつであってもよい。
【0029】
第1実施形態では第1規制部11が、係合スレッド8の右端部を構成するが、他の実施形態として第1規制部11が、係合スレッド8の中腹部を構成してもよい。すなわち、キャップ1の直径を境にして一方にあるラグ5が係合スレッド8の中腹部の下縁部に当接するようにして、キャップ1を傾斜可能としてもよい。また、第1実施形態では第1規制部11が係合スレッド8の一部を構成するが、他の実施形態として両者が別個独立に設けられてもよい。
【0030】
第1実施形態では第2規制部12が、案内スレッド10の傾斜部分を構成するが、他の実施形態として第2規制部12が、案内スレッド10の水平部分を構成してもよい。すなわち、キャップ1の直径を境として一方にあるラグ5が案内スレッド10の水平部分に当接するようにして、傾斜するキャップ1が口部2から外れるのを防止してもよい。また、第1実施形態では第2規制部12が案内スレッド10の一部を構成するが、他の実施形態として両者が別個独立に設けられてもよい。
【0031】
また、第2実施形態では規制部13が水平に形成されているが、他の実施形態として規制部13が案内スレッド10の傾斜部分よりもなだらかに傾斜して形成されてもよい。第2実施形態では規制部13が案内スレッド10の傾斜部分の一部を構成するが、他の実施形態として両者が別個独立に設けられてもよい。
【図面の簡単な説明】
【図1】第1実施形態のキャップ付き容器の要部の構成説明図
【図2】第1実施形態のキャップ付き容器の機能説明図
【図3】第1実施形態のキャップ付き容器の概念的な機能説明図
【図4】第2実施形態のキャップ付き容器の要部の構成説明図
【図5】第2実施形態のキャップ付き容器の機能説明図
【符号の説明】
1‥キャップ、2‥口部、3‥天板部、4‥円筒部、5‥ラグ、6‥シール材、8‥係合スレッド、10‥案内スレッド、11‥第1規制部、12‥第2規制部、13‥規制部、c‥微小間隙
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cap-equipped container that is sealed and opened when the cap is attached to and detached from the mouth, and more particularly to a capped container that can be positively pressurized to contain carbonated drinking water or the like.
[0002]
[Prior art]
When selling carbonated beverages or soft drinks, containers with caps (hereinafter referred to as “containers” where appropriate) that are sealed with caps are widely used. This container is composed of a substantially bottomed cylindrical body, a substantially cylindrical mouth part that is continuously connected to the body while being reduced in diameter, and a male screw part provided on the outer peripheral surface of the mouth part. Yes. In addition, this container has a substantially heavenly cylindrical shape composed of a top plate portion, a cylindrical portion extending downward from the periphery of the top plate portion, and a female screw portion provided on the inner peripheral surface of the cylindrical portion. Has a cap. In the container having the above-described configuration, a cap is screwed to the mouth portion via a male screw portion and a female screw portion, and the mouth portion is closed by the top plate portion of the cap, and is sealed. On the other hand, in the container having the above-described configuration, the cap is rotated with respect to the mouth portion from the sealed state, the female screw portion is screwed with respect to the male screw portion, and the cap is lifted with respect to the mouth portion, thereby releasing the seal.
[0003]
By the way, considering the ease of drinking the contents when the mouth is directly attached to the mouth of the container, the ease of pouring the contents into the cup, etc., it is preferable to enlarge the mouth to a certain degree of wide mouth. There is a case. However, if the mouth portion is a wide mouth, the contact area when the male screw portion of the mouth portion and the female screw portion of the cap are screwed increases, so that a relatively large force is required to open the container, which may deteriorate usability. There is.
[0004]
Therefore, instead of the male screw part, a plurality of engagement threads are provided on the outer peripheral surface of the mouth part, a plurality of lugs are provided on the inner peripheral surface of the cap instead of the female screw part, and the plurality of lugs are engaged with the plurality of engagement threads. It is conceivable to use a container configured to be sealed by closing the mouth with the top plate of the cap. In the container having such a configuration, the contact area between the engagement thread of the mouth and the lug of the cap is small. Therefore, by simply rotating the cap from the sealed state with a slight force, the engagement between the lug and the engagement thread is released, and the sealed state is released.
[0005]
However, the cap was rotated with respect to the mouth in a state where the inside of the container was positive due to reasons such as carbonated drinking water being put in the container, and the engagement between the lug and the engagement thread was released. In this case, the following inconvenience occurs. That is, in this case, the gas in the container suddenly erupts and a sound is generated, which may cause discomfort to the user, and the cap may be pushed upward by the gas and removed from the mouth vigorously. .
[0006]
[Problems to be solved by the invention]
In view of such a background, the present invention is provided with a cap that can prevent ejection noise caused by a sudden ejection of gas in the container when the container in a positive pressure state is opened, and prevent the cap from coming off from the mouth vigorously. Providing a container is a problem to be solved.
[0007]
[Means for Solving the Problems]
The present invention provides a cap having a substantially circular top plate portion, a cylindrical portion extending downward from the periphery of the top plate portion, and a plurality of lugs protruding in the inner diameter direction of the cylindrical portion along the outer peripheral surface. substantially cylindrical mouth portion in which a plurality of threads is provided is closed, with the lug engages the 該Su red, with cap the mouth portion is sealed by being closed in the top plate portion Concerning the container.
[0008]
The container with a cap according to the first aspect of the present invention for solving the above-mentioned problem is formed such that the sled extends horizontally from an engaging thread, and extends downward from the left end of the engaging thread. A stopper, and a guide thread that extends obliquely upward from the right end of the engagement thread and then extends horizontally to the right above the engagement thread. One thread and the other thread are formed with a diameter as a boundary, and the engagement thread of the one thread has a longer distance from the stopper than the engagement thread of the other thread, When the lug is engaged with the engaging thread of the one thread, the other thread is disengaged from the engaging thread of the other thread and the lug, and Wherein the minute gap is formed on the outer circumferential surface of the mouth portion so as to be applied between the flop and the mouth portion.
[0009]
According to the container of the configuration, when the sealed state cap Ru is rotated around the mouth, as a boundary diameter of the mouth portion, the engagement between the engaging threads and the lug of one of the threads is released lug Can be freely raised, and the engaging thread and the lug of the other thread are engaged. Then, the container in this state may have been a positive pressure, the cap side of the universal lug increase this pressure is inclined to rise.
[0010]
At this time, since a minute gap is generated between the cap and the mouth, if the pressure in the container is positive, the gas in the container can gradually escape from the minute gap, and the positive pressure state is gradually released. Is done. For this reason, it is possible to prevent an ejection sound due to a sudden ejection of the gas in the container and to prevent the cap from coming off from the mouth vigorously. After that, when the cap is rotated in the opening direction, the cap is removed from the mouth and the container is completely opened.
[0013]
In the cap-equipped container according to the second aspect , the thread includes an engaging thread formed to extend horizontally, and extends obliquely upward from the right end of the engaging thread, and then the right side above the engaging thread. And a guide thread formed so as to extend horizontally obliquely upward and then to the right upward, and the restriction portion is in a sealed state from the sealed state. When the cap is rotated around the mouth to disengage the lug from the engagement sled and the cap is lifted with respect to the mouth, It is formed on the outer peripheral surface of the mouth portion so that a minute gap is provided between the mouth portion.
[0014]
According to the container of the construction, the cap from the sealed state is when that will be rotated around the mouth, the lug is raised is released from engagement with the engagement thread. When the rise is restricted by the restriction part, a minute gap is generated between the cap and the mouth part. The restricting portion extends obliquely upward from the right end portion of the engaging sled, then extends horizontally to the right above the engaging sled, further extends obliquely upward, and then horizontally extends upward to the right. Consecutive to the guide thread formed in this way. Therefore, since the lug engages with the restricting portion and the guide thread, when the inside of the container is at a positive pressure, the gas in the container can gradually escape from this minute gap, and the rise of the lug is restricted by the restricting portion. The positive pressure state is gradually released while engaging the guide thread . For this reason, it is possible to prevent an ejection sound due to a sudden ejection of the gas in the container and to prevent the cap from coming off from the mouth vigorously.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment of the container with a cap of this invention is described using drawing. FIG. 1 is a configuration explanatory diagram of a main part of a container with a cap according to the first embodiment, FIG. 2 is a function explanatory diagram of the container with a cap according to the first embodiment, and FIG. 3 is a container with a cap according to the first embodiment. FIG. 4 is a configuration explanatory diagram of a main part of the container with a cap according to the second embodiment, and FIG. 5 is a function explanatory diagram of the container with a cap according to the second embodiment.
[0017]
First, the container of 1st Embodiment of this invention is demonstrated using FIG.1, FIG.2 and FIG.3. The container of the first embodiment shown in FIG. 1 is sealed and opened by closing and opening a substantially cylindrical mouth portion 2 that opens upward by a cap 1 made of metal. The cap 1 includes a substantially circular top plate portion 3, a cylindrical portion 4 that extends downward from the periphery of the top plate portion 3, and four lugs 5 that protrude in the inner diameter direction of the cylindrical portion 4. In addition, a substantially disc-shaped sealing material 6 made of a soft material such as polyethylene is provided on the back side of the top plate portion 3.
[0018]
As developed and shown in FIG. 3, four threads 7 extending along the outer peripheral surface corresponding to the four lugs 5 of the cap 1 protrude from the mouth portion 2. The thread 7 includes an engaging thread 8 that extends horizontally, a stopper 9 that extends downward from the left end of the engaging thread 8 (the end on the closing direction side), A guide thread 10 is formed to extend obliquely upward to the right from the right end portion (end portion on the lid opening direction side) and then horizontally extend to the right above the engagement sled 8. The thread 7 is formed with one thread and the other thread with the diameter of the mouth portion 2 as a boundary, and the two engaging threads 8 in one thread (the right side in FIG. 3) are the other (the left side in FIG. 3) . compared to two engaging threads 8 in the thread distance is extended from the stopper 9.
[0019]
The two engaging threads 8 on the right side (one thread) in FIG. 3 have extended portions (hereinafter referred to as the first restricting portion 11) . The two engagements on the left side (the other thread) in FIG . The combined thread 8 is formed with an inclined portion of a continuous guide thread 10 (hereinafter referred to as a second restricting portion 12). The horizontal part of the two guide sleds 10 on the right side in FIG. 3 is shorter than the horizontal part of the left guide sled 10 in FIG. The height of the lower edge portion of the second restricting portion 12 (the “second height” in the present invention) is the height of the lower edge portion of the engagement thread 8, that is, the lower edge portion of the first restricting portion 11. It is located above the height (the “first height” in the present invention).
[0020]
When sealing the container of the said structure, the opening | mouth part 2 is closed with the cap 1, and the cap 1 is rotated in the closing direction (left in the figure). At this time, first, the lug 5 horizontally moves to the left along the lower edge portion of the guide sled 10 and then moves obliquely downward to the left, and is guided to the lower edge portion of the engaging sled 8.
[0021]
Next, when the lug 5 reaches the lower edge portion of the engagement sled 8, the two are engaged with each other, but the lug 5 still horizontally moves to the left along the lower edge portion of the engagement sled 8, 5 contacts the stopper 9. This restricts the rotation of the cap 1 in the closing direction. When the lug 5 is lowered to the lower edge portion of the engagement thread 8, the cap 1 is lowered, whereby the sealing material 6 pressed against the top plate portion 3 as shown in FIG. The container is sealed by being pressed against the part.
[0022]
Here, the case where the cap 1 is rotated in the opening direction (right side in the figure) while the inside of the container is at a positive pressure will be described with reference to FIGS. 2 and 3. In this case, the four lugs 5 move horizontally along the lower edge of the engagement sled 8 in the opening direction. The two lugs 5 on the left side of FIG. 3 reaches the position shown in phantom 5a, the engagement between the engaging threads 8 is released. On the other hand, at this time, the two lugs 5 on the right side of FIG. 3 are in the position indicated by the phantom line 5b and come into contact with the lower edge portion of the first restricting portion 11, whereby the two lugs 5 are lifted first. Regulated by the height of. In other words, the cap 1 is in a state in which two lugs 5 whose rise is restricted by the diameter of the cap 1 and two lugs 5 that can rise freely coexist. Accordingly, the cap 1 is inclined by being pushed up by the pressure of the container, as shown by a white arrow in FIG. At this time, the two lugs 5 on the left side in FIG. 3 reach the position indicated by the imaginary line 5 c and abut against the lower edge portion of the second restricting portion 12 constituting the inclined portion of the guide thread 10. Thereby, the rise of the two lugs 5 is regulated by the second height that is above the first height, and the inclination of the cap 1 is regulated.
[0023]
At this time, as shown in FIG. 2, a minute gap c is generated between the sealing material 6 of the cap 1 and the upper peripheral edge of the mouth portion 2. The gas in the container can gradually escape from the minute gap c, and the positive pressure state is gradually released. For this reason, it is possible to prevent an ejection sound due to a sudden ejection of the gas in the container, and to prevent the cap 1 from coming off from the mouth portion 2 vigorously.
[0024]
When the cap 1 is rotated in the opening direction from such a state, the lugs 5 are guided along the lower edge portion of the guide sled 10, and then when all the lugs 5 are disengaged from the left end of the guide sled 10, the cap 1 is removed from the mouth 2.
[0025]
Subsequently, a container according to a second embodiment of the present invention will be described with reference to FIGS. 4 and 5. The container of the second embodiment shown in FIG. 4 is substantially the same as the first embodiment except that the sled 7 has the same shape and a horizontal portion is formed in the middle of the inclined portion of the guide thread 10. Since it is the same structure, the same code | symbol is used and description is abbreviate | omitted. A horizontal portion formed in the middle of the inclined portion of the guide thread 10 is formed slightly above the engagement thread 8 and constitutes the restricting portion 13 of the present invention.
[0026]
In the container having the above-described configuration, when the cap 1 is rotated in the opening direction (right in the figure) from a state where the internal pressure is positive, the lug 5 is placed on the lower edge of the engagement thread 8 as indicated by an arrow in FIG. Move horizontally along. Subsequently, the lug 5 reaches the left end portion of the guide sled 10, and after the engagement with the engaging sled 8 is released, the lug 5 starts to move to the upper right along the lower edge portion of the guide sled 10. Then, the lug 5 reaches the middle of the inclined portion of the guide thread 10 and comes into contact with the lower edge of the restricting portion 13 so that the rise of the lug 5 is restricted. At this time, as shown in FIG. 5, the sealing material 6 slightly rises with the cap 1, and a minute gap c is formed between the upper end peripheral portion of the mouth portion 2. Therefore, when the pressure in the container is positive, the gas in the container can gradually escape from the minute gap c, and the positive pressure state gradually increases while the rise of the lug 5 is regulated by the regulating part 13. Canceled. For this reason, it is possible to prevent an ejection sound due to a sudden ejection of the gas in the container, and to prevent the cap 1 from coming off from the mouth portion 2 vigorously.
[0027]
In the two embodiments, the cap 1 is made of metal. However, as another embodiment, the cap 1 may be made of other materials such as plastic. Further, if the material of the cap 1 is such that the top plate 3 can press-contact the entire periphery of the upper end 2 of the mouth portion 2 and seal the container reliably, the sealing material 6 may be omitted. .
[0028]
In the two embodiments, four threads 7 are provided. However, the number of threads 7 may be any number as long as the container can be sealed.
[0029]
In 1st Embodiment, although the 1st control part 11 comprises the right end part of the engagement thread | sled 8, the 1st control part 11 may comprise the middle part of the engagement thread | sled 8 as other embodiment. That is, the cap 1 may be tilted so that the lug 5 on one side abuts the lower edge of the middle part of the engagement thread 8 with the diameter of the cap 1 as a boundary. Moreover, although the 1st control part 11 comprises a part of engagement thread | thread 8 in 1st Embodiment, both may be provided separately as another embodiment.
[0030]
In the first embodiment, the second restricting portion 12 constitutes an inclined portion of the guide thread 10. However, as another embodiment, the second restricting portion 12 may constitute a horizontal portion of the guide thread 10. That is, the sloping cap 1 may be prevented from coming off from the mouth portion 2 such that the lug 5 on one side contacts the horizontal portion of the guide thread 10 with the diameter of the cap 1 as a boundary. In the first embodiment, the second restricting portion 12 constitutes a part of the guide thread 10. However, as another embodiment, both may be provided separately.
[0031]
Further, in the second embodiment, the restricting portion 13 is formed horizontally, but as another embodiment, the restricting portion 13 may be formed so as to be inclined more gently than the inclined portion of the guide thread 10. In 2nd Embodiment, although the control part 13 comprises a part of inclination part of the guidance thread | sled 10, both may be provided separately as other embodiment.
[Brief description of the drawings]
FIG. 1 is a configuration explanatory view of a main part of a container with a cap according to a first embodiment. FIG. 2 is a functional explanatory diagram of a container with a cap according to a first embodiment. Fig. 4 is an explanatory diagram of the configuration of the main part of the container with a cap according to the second embodiment. Fig. 5 is an explanatory diagram of the function of the container with a cap according to the second embodiment.
DESCRIPTION OF SYMBOLS 1 ... Cap, 2 mouth part, 3 ... Top plate part, 4 ... Cylindrical part, 5 ... Lug, 6 ... Seal material, 8 ... Engagement thread, 10 ... Guide thread, 11 ... 1st control part, 12 ... 1st 2 restriction part, 13 ... restriction part, c ... minute gap

Claims (1)

略円形の天板部と、該天板部の周縁より下方に延びる円筒部と、該円筒部の内径方向に突出する複数のラグとを備えたキャップにより、外周面に沿って複数のスレッドが設けられた略円筒状の口部が閉蓋され、該ラグが該スレッドに係合するとともに、該口部が該天板部に閉塞されることで密封されるキャップ付き容器であって、
前記スレッドは、水平に延びて形成された係合スレッドと、該係合スレッドの左端部から下方に延びて形成されたストッパと、該係合スレッドの右端部から斜め上方に延びた後、該係合スレッドより上方で右に向って水平に延びて形成された案内スレッドを有し、
前記スレッドは、前記口部の直径を境として一方のスレッドと他方のスレッドが形成され、
前記一方のスレッドの係合スレッドは、他方のスレッドの係合スレッドと比較して前記ストッパからの距離が延長され、
前記一方のスレッドと前記他方のスレッドは、前記一方のスレッドの係合スレッドに前記ラグが係合しているときに、前記他方のスレッドの係合スレッドと前記ラグとの係合が解除されて、前記キャップと前記口部との間に微小間隙が付与されるように前記口部の外周面に形成されていることを特徴とするキャップ付き容器。
A cap having a substantially circular top plate portion, a cylindrical portion extending downward from the periphery of the top plate portion, and a plurality of lugs protruding in the inner diameter direction of the cylindrical portion allows a plurality of threads to be formed along the outer peripheral surface. A container with a cap that is sealed by closing the provided substantially cylindrical mouth, the lug engages with the thread, and the mouth is closed by the top plate;
The thread includes an engaging thread formed extending horizontally, a stopper formed extending downward from the left end of the engaging thread, and obliquely upward extending from the right end of the engaging thread. A guide thread formed horizontally extending to the right above the engagement thread;
The thread is formed with one thread and the other thread on the boundary of the diameter of the mouth,
The engagement thread of the one thread has an extended distance from the stopper compared to the engagement thread of the other thread,
When the lug is engaged with the engagement thread of the one thread, the engagement between the engagement thread of the other thread and the lug is released. The cap-equipped container is formed on the outer peripheral surface of the mouth so that a minute gap is provided between the cap and the mouth.
JP34378299A 1999-12-02 1999-12-02 Container with cap Expired - Fee Related JP4530454B2 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52144945U (en) * 1976-04-24 1977-11-02
JPS56161952A (en) * 1980-05-07 1981-12-12 Crown Cork Japan Rag type vessel cover made of metal and its manufacture

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52144945U (en) * 1976-04-24 1977-11-02
JPS56161952A (en) * 1980-05-07 1981-12-12 Crown Cork Japan Rag type vessel cover made of metal and its manufacture

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