JP2010285162A - Container constituted of lid made of synthetic resin and container body - Google Patents

Container constituted of lid made of synthetic resin and container body Download PDF

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JP2010285162A
JP2010285162A JP2009138014A JP2009138014A JP2010285162A JP 2010285162 A JP2010285162 A JP 2010285162A JP 2009138014 A JP2009138014 A JP 2009138014A JP 2009138014 A JP2009138014 A JP 2009138014A JP 2010285162 A JP2010285162 A JP 2010285162A
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lid
mouth
neck
flange
extending
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JP5298350B2 (en
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Yasunori Yamazaki
恭典 山崎
Katsumi Hashimoto
勝己 橋本
Hidemitsu Miyabayashi
秀充 宮林
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Nippon Closures Co Ltd
Kirin Brewery Co Ltd
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Kirin Brewery Co Ltd
Japan Crown Cork Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a container capable of sufficiently decreasing the amount of a synthetic resin necessary for manufacturing a lid (4), decreasing the whole height of the lid (4) (and the height of an opening neck of a container body), and in addition, making a torque required when the opening neck of the container body (2) is opened to be an appropriate value, and displaying clearly such a fact that the lid is rotated in the opening direction when the lid is rotated in the opening direction. <P>SOLUTION: A lid flange (32) with a required shape is formed on a skirt wall (18) of the lid. In addition, an opening neck flange (10) with a required shape is formed on the opening neck (2). Then, extending ends (44) of a plurality of extending pieces (34) of the lid flange and a plurality of means to be locked (12a and 12h) of the opening neck flange (10) are locked together. At least one of the means (12c and 12g) to be locked is made to be a restraining type means to be locked. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、合成樹脂から形成された蓋と容器本体とから構成された容器、更に詳しくは、容器の口頸部が一旦開封されるとかかる事実を明示するタンパーエビデント特性を備えた、合成樹脂から形成された蓋と容器本体とから構成された容器に関する。   The present invention relates to a container composed of a lid formed of a synthetic resin and a container body, and more particularly, a synthetic material having a tamper-evidence characteristic that clearly indicates the fact once the mouth and neck of the container is opened. The present invention relates to a container composed of a lid formed from resin and a container body.

飲料用容器として、ポリエチレンテレフタレートの如き適宜の合成樹脂、ガラス或いは金属薄板から形成された容器本体と合成樹脂から形成された蓋との組合から構成された容器が広く実用に供されている。容器は円筒形状の口頸部を有し、この口頸部の外周面には雄螺条が形成されている。蓋は天面壁及びこの天面壁の周縁から垂下する円筒形状のスカート壁を有し、スカート壁の内周面には雌螺条が形成されている。容器の口頸部に蓋を被嵌し蓋を閉方向に回転せしめて口頸部の雄螺条に蓋の雌螺条を螺合せしめることによって、口頸部に容器蓋が装着され口頸部が密封される。口頸部を開封する際には、蓋を開方向に回転せしめて口頸部の雄螺条に対する蓋の雌螺条の螺合を解除して口頸部から蓋を離脱せしめる。   As a beverage container, a container composed of a combination of an appropriate synthetic resin such as polyethylene terephthalate, a container body formed of glass or a metal thin plate, and a lid formed of a synthetic resin is widely used in practical use. The container has a cylindrical mouth and neck portion, and a male thread is formed on the outer peripheral surface of the mouth and neck portion. The lid has a top wall and a cylindrical skirt wall depending from the periphery of the top wall, and a female thread is formed on the inner peripheral surface of the skirt wall. The container lid is attached to the mouth and neck by fitting the lid on the mouth and neck of the container, rotating the lid in the closing direction, and screwing the female thread of the lid onto the male thread of the mouth and neck. The part is sealed. When opening the mouth and neck, the lid is rotated in the opening direction to release the screw of the female thread of the lid with respect to the male thread of the mouth and neck, and the lid is detached from the mouth and neck.

而して、上述した形態の容器は、悪戯によって蓋が開方向に回転せしめられ口頸部の密封が解除されてしまった場合には、かかる事実が明示される所謂タンパーエビデント特性を備えていることが重要である。容器にタンパーエビデント特性を付与せしめるための典型的技法においては、容器本体の口頸部の外周面に雄螺条の下方に位置する係止あご部を形成すると共に、蓋のスカート壁に周方向に延在する破断可能ラインを形成してスカート壁をこの破断可能ラインよりも上方の主部と下方のタンパーエビデント裾部とに区画し、タンパーエビデント裾部の内周面に上記係止あご部と協働する係止手段を形成する。容器本体の口頸部に蓋を所要とおりに装着すると、蓋の係止手段が口頸部の係止あご部に係止せしめられる。蓋を開方向に回転せしめると、口頸部の雄螺条に沿って蓋の雌螺条が移動せしめられることによって蓋は回転と共に上昇せしめられる。しかしながら、タンパーエビデント裾部はその内周面に形成されている係止手段が口頸部の係止あご部に係止せしめられている故に上昇が阻止され、これによって上記破断可能ラインに応力が生成されて破断可能ラインが破断され、かくして蓋が開方向に回転せしめられたことが明示される。   Thus, the container of the above-described form has a so-called tamper-evidence characteristic in which such a fact is clearly shown when the lid is rotated in the open direction by mischief and the sealing of the mouth and neck is released. It is important that In a typical technique for imparting tamper-evidence characteristics to a container, a locking jaw is formed on the outer peripheral surface of the mouth and neck of the container body, which is positioned below the male thread, and is formed around the skirt wall of the lid. Forming a breakable line extending in the direction, and dividing the skirt wall into a main portion above the breakable line and a tamper evidence hem below the skirt wall, and the above-mentioned engagement on the inner peripheral surface of the tamper evidence skirt. A locking means for cooperating with the stop jaw is formed. When the lid is attached to the mouth / neck portion of the container body as required, the lid locking means is locked to the locking jaw portion of the mouth / neck portion. When the lid is rotated in the opening direction, the lid is raised along with the rotation by moving the female thread of the lid along the male thread of the mouth and neck. However, the tamper-evident hem is prevented from rising because the locking means formed on the inner peripheral surface of the tamper-evident is locked to the locking jaw of the mouth-neck, thereby causing stress to the breakable line. Is generated to break the breakable line, thus indicating that the lid has been rotated in the opening direction.

然るに、上記典型的技法によるタンパーエビデント特性の賦与においては、特に蓋のスカート壁の下部にタンパーエビデント裾部を配設しその内周面に係止手段を形成することが必要であることに起因して、蓋を製造するための必要合成樹脂量が比較的大きく、製造コストを充分に低減せしめることが困難であり、そしてまた蓋の全高が比較的大きくなり、これに付随して容器本体の口頸部の高さも比較的大きくなり、かかる点からも製造コストの低減が困難である。   However, in the provision of the tamper evidence characteristics by the above-described typical technique, it is particularly necessary to dispose the tamper evidence hem at the lower part of the skirt wall of the lid and to form the locking means on the inner peripheral surface thereof. Because of this, the amount of synthetic resin required to manufacture the lid is relatively large, it is difficult to sufficiently reduce the manufacturing cost, and the overall height of the lid is relatively large. The height of the mouth and neck of the main body also becomes relatively large, and it is difficult to reduce the manufacturing cost from this point.

上記典型的技法における上記のとおりの問題を解決する技法として、下記特許文献１、２及び３には、容器本体の口頸部の適宜部位と蓋の適宜部位とを、例えば溶着によって相互に係止せしめることが提案されている。蓋を開方向に回転せしめると、容器本体の口頸部と蓋との相互係止が解除され或いは蓋に形成されている破断可能ラインが破断され、かくして蓋が開方向に回転せしめられたことが明示される。   As techniques for solving the above-described problems in the above typical technique, Patent Documents 1, 2 and 3 below relate an appropriate part of the mouth and neck of the container body and an appropriate part of the lid to each other, for example, by welding. It has been proposed to stop. When the lid is rotated in the opening direction, the interlock between the mouth neck of the container body and the lid is released, or the breakable line formed on the lid is broken, and thus the lid is rotated in the opening direction. Is specified.

実開昭６１−１６９０４６号公報Japanese Utility Model Publication No. 61-169046 特開２００２−３０２１３３号公報JP 2002-302133 A 国際公開ＷＯ２００５／０８５０７７号公報International Publication WO2005 / 085077

本発明者等の経験によれば、上記特許文献１、２及び３に開示されている技法には、（１）容器本体の口頸部を開封する際に蓋に加えなければならないトルク、特に蓋を開方向に回転する際の初期トルクが相当大きく、特に女性乃至子供にとって開封操作が相当困難である、及び／又は（２）蓋が開方向に回転されたことを示す痕跡、即ち容器本体の口頸部と蓋との相互係止の解除、が必ずしも明確に表示されず、タンパーエビデント特性が不充分である、という解決すべき問題が存在する。蓋を開方向に回転する際の初期トルクが過大になる原因は、所要密封部位が容器本体の口頸部に密接にされている蓋を口頸部に対して回転開始するための必要トルクと共に容器本体の口頸部と蓋との相互係止を解除するための必要トルクとの双方が回転開始初期に同時に必要とされることによる。   According to the experience of the present inventors, the techniques disclosed in Patent Documents 1, 2, and 3 described above include (1) torque that must be applied to the lid when opening the mouth and neck of the container body, particularly The initial torque when the lid is rotated in the opening direction is considerably large, and the opening operation is particularly difficult for women or children, and / or (2) a trace indicating that the lid has been rotated in the opening direction, that is, the container body There is a problem to be solved that the release of the interlocking between the mouth neck and the lid is not clearly displayed and the tamper evidence characteristics are insufficient. The reason why the initial torque when the lid is rotated in the opening direction is excessive is that the required sealing part is in close contact with the mouth and neck of the container body, together with the necessary torque to start the rotation with respect to the mouth and neck. This is because both the necessary torque for releasing the mutual locking between the mouth neck of the container body and the lid are required at the beginning of the rotation at the same time.

かかる事実に鑑み、本発明者等は、先に、特願２００９−１３７１４１号において、蓋を製造するための必要合成樹脂量を充分に低減し且つ蓋の全高（及び容器本体の口頸部の高さ）を低減することができることに加えて、容器本体の口頸部を開封する際に必要とされるトルクを適切な値にせしめることができ、そしてまた蓋が開方向に回転された場合にはかかる事実が明確に表示される、新規且つ改良された合成樹脂製蓋と容器本体との組み合わせから構成された容器を提供した。   In view of this fact, the present inventors previously described in Japanese Patent Application No. 2009-137141 that the amount of synthetic resin required for manufacturing the lid is sufficiently reduced and the total height of the lid (and the mouth and neck of the container body). In addition to being able to reduce the height), the torque required to open the mouth and neck of the container body can be brought to an appropriate value, and also when the lid is rotated in the opening direction Provided a container composed of a combination of a new and improved synthetic resin lid and a container body, in which such fact is clearly displayed.

本発明者等が先に提案した容器は、合成樹脂から形成され天面壁及び該天面壁の周縁から垂下する円筒形状のスカート壁を有し、該スカート壁の内周面には雌螺条が形成されている蓋と、円筒形状の口頸部を有し、該口頸部の外周面には該蓋の該雌螺条と協働する雄が形成されている容器本体とから構成された容器において、該蓋の該スカート壁の外周面には蓋フランジが形成されており、該蓋フランジは周方向に間隔をおいて該スカート壁の該外周面の下端部から延出する複数個の延出片と、隣接する該延出片を接続している易破断接続片を有し、該延出片の各々は該スカート壁の該外周面の下端部に接続された接続基部、該接続基部から周方向片方向に延びる第一の周方向延出部、半径方向に延出する接続部を介して該第一の周方向延出部に接続され周方向他方向に延びる第二の周方向延出部及び延出端部を含み、該容器本体の該口頸部の外周面には該雄螺条の下方において半径方向外方に延出する口頸部フランジが形成されており、該口頸部フランジの上面には上方に突出する複数個の被係止手段が周方向に間隔をおいて形成されており、該容器本体の該口頸部を該蓋によって密封する際には、該容器本体の該口頸部に該蓋を被嵌し該口頸部に対して該蓋を閉方向に相対的に回転せしめて該雄螺条に該雌螺条を螺合せしめることによって該容器本体の該口頸部に該蓋が装着され、かくして該蓋フランジの該延出片の各々の該延出端部が該口頸部フランジの該被係止手段の各々に対向して位置せしめられ、しかる後に該延出端部を加熱することによって該延出端部が該被係止手段に係止せしめられ、該容器本体の該口頸部を開封する際には、該口頸部に対して該蓋を開方向に回転せしめることによって、該蓋フランジの該易破断接続片が破断され、次いで該延出片が変形されて該蓋フランジの該延出片の各々の該延出端部が該スカート壁の下端に対して相対的に下方に変位され、しかる後に該口頸部フランジの該被係止手段から該蓋フランジの該延出片の該延出端部が離脱される及び／又は該延出片が破断される。   The container previously proposed by the present inventors has a top wall formed of a synthetic resin and a cylindrical skirt wall that hangs down from the periphery of the top wall, and a female thread is formed on the inner peripheral surface of the skirt wall. And a container body having a cylindrical mouth and neck portion, and a male body that cooperates with the female thread of the lid is formed on the outer peripheral surface of the mouth and neck portion. In the container, a lid flange is formed on the outer peripheral surface of the skirt wall of the lid, and the lid flange is a plurality of flanges extending from the lower end portion of the outer peripheral surface of the skirt wall at intervals in the circumferential direction. An extension piece and a breakable connection piece connecting the adjacent extension pieces, each of the extension pieces being connected to a lower end portion of the outer peripheral surface of the skirt wall, the connection A first circumferentially extending portion extending in one circumferential direction from the base, and a first circumferentially extending portion via a connecting portion extending in the radial direction A second circumferentially extending portion and an extending end portion that are connected to each other in the circumferential direction, and the outer peripheral surface of the mouth-neck portion of the container body is radially outwardly below the male thread. An extending neck and neck flange is formed, and a plurality of locking means projecting upward are formed on the upper surface of the mouth and neck flange at intervals in the circumferential direction. When sealing the mouth-and-neck portion with the lid, the lid is fitted on the mouth-neck portion of the container body, and the lid is rotated relative to the mouth-and-neck portion in the closing direction, so that the male The cap is attached to the mouth and neck of the container body by screwing the female thread into the screw, and thus the extended end of each of the extending pieces of the lid flange is connected to the mouth and neck. The flange is positioned to face each of the locked means, and then the extended end is heated by the extended end so that the extended end becomes the locked hand. When opening the mouth-neck portion of the container body, the easily breakable connecting piece of the lid flange is broken by rotating the lid in the opening direction with respect to the mouth-neck portion. And then the extension piece is deformed so that the extension end of each of the extension pieces of the lid flange is displaced downward relative to the lower end of the skirt wall, and then the mouth neck The extended end of the extended piece of the lid flange is detached from the locked means of the flange and / or the extended piece is broken.

然るに、本発明者等が先に提案した上記容器について、更に検討を重ねた結果、特に蓋と容器本体とが異なった材料から形成されている場合、蓋フランジの延出片における延出端部と口頸部フランジの被係止手段との係止が必ずしも充分ではなく、容器本体の口頸部を開封する際に、蓋フランジの易破断接続片が破断されることなく延出片の延出端部が口頸部フランジの被係止手段から離脱されてしまうことがあることが判明した。易破断接続片が破断されない場合には、蓋を再び容器本体の口頸部に装着した時に、口頸部が一旦開封されたことの明示が必ずしも充分でなく成る虞がある。   However, as a result of further investigation on the container previously proposed by the present inventors, the extended end portion of the extended piece of the cover flange, particularly when the cover and the container body are formed of different materials. And the locking means of the mouth-and-neck flange are not always sufficient, and when opening the mouth-and-neck part of the container body, the easily breakable connecting piece of the lid flange is not broken and the extension piece is extended. It has been found that the protruding end may be detached from the locking means of the mouth-and-neck flange. If the easily breakable connecting piece is not broken, there is a possibility that when the lid is attached to the mouth / neck portion of the container body again, it is not always clear that the mouth / neck portion is once opened.

本発明は上記事実に鑑みてなされたものであり、その主たる技術的課題は、口頸部フランジにおける複数個の被係止手段の少なくとも１個の形態を改良して、少なくとも１個の被係止手段に関しては蓋フランジの延出片における延出端部が充分に係止され、従って容器本体の口頸部を開封する際には蓋フランジにおける少なくとも１個の易破断接続片が確実に破断されるようになすことである。   The present invention has been made in view of the above-mentioned facts, and its main technical problem is to improve at least one form of a plurality of locking means in the mouth-and-neck flange and to provide at least one engagement. Regarding the stopping means, the extension end of the extension piece of the lid flange is sufficiently locked, so that when opening the mouth and neck of the container body, at least one easily breakable connecting piece in the lid flange is reliably broken. Is to be done.

本発明者等は、更に検討を重ねた結果、口頸部フランジにおける複数個の被係止手段の少なくとも１個を、拘束空間を規定する突条を含む形態にせしめることによって、上記主たる技術的課題を達成することができることを見出した。本明細書において使用する語句「拘束空間」は、上方に向かって完全に開放されることなく少なくとも部分的に閉塞されている空間、即ち成形型に関してアンダーカットと称されている空間と実質上同一の空間、を意味する。   As a result of further investigations, the present inventors have made at least one of the plurality of locked means in the mouth-and-neck flange into a form including a ridge that defines a constraining space. We have found that we can achieve the task. As used herein, the phrase “constrained space” is substantially the same as a space that is at least partially occluded without being fully opened upward, ie, a space referred to as an undercut with respect to the mold. Of space.

即ち、本発明によれば、上記主たる技術的課題を達成する容器として、円筒形状の口頸部を有し、該口頸部の外周面には雄螺条及び該雄螺条の下方において半径方向外方に延出する口頸部フランジが形成されており、該口頸部フランジの上面には上方に突出する複数個の被係止手段が周方向に間隔をおいて形成されている容器本体と、
合成樹脂から形成され天面壁及び該天面壁の周縁から垂下する円筒形状のスカート壁を有し、該スカート壁の内周面には該容器本体の該雄螺条と協働する雌螺条が形成されており、該スカート壁の外周面には蓋フランジが形成されており、該蓋フランジは周方向に間隔をおいて該スカート壁の該外周面の下端部から延出する複数個の延出片と、隣接する該延出片を接続している易破断接続片を有し、該延出片の各々は該スカート壁の該外周面の下端部に接続された接続基部、該接続基部から周方向片方向に延びる第一の周方向延出部、周方向他方向に延びる第二の周方向延出部及び延出端部を含む蓋と、
から構成され、
該口頸部フランジの該被係止手段の少なくとも１個は、拘束空間を規定する突条を含んでいる拘束型被係止手段であり、
該容器本体の該口頸部を該蓋によって密封する際には、該容器本体の該口頸部に該蓋を被嵌し該口頸部に対して該蓋を閉方向に相対的に回転せしめて該雄螺条に該雌螺条を螺合せしめることによって該容器本体の該口頸部に該蓋が装着され、かくして該蓋フランジの該延出片の各々の該延出端部が該口頸部フランジの該被係止手段の各々に対向して位置せしめられ、しかる後に該延出端部を該被係止手段に押圧し加熱することによって該延出端部が該被係止手段に係止せしめられ、該拘束型被係止手段においては軟化せしめられた該延出端部が該拘束空間内に進入せしめられ、
該容器本体の該口頸部を開封する際には、該口頸部に対して該蓋を開方向に回転せしめることによって、該蓋フランジの該易破断接続片が破断され、該延出片が変形されて該蓋フランジの該延出片の各々の該延出端部が該スカート壁の下端に対して相対的に下方に変位され、しかる後に該被係止手段から該口頸部フランジの該延出片の該延出端部が離脱されるか或いは該延出片が破断される、
ことを特徴とする容器が提供される。 That is, according to the present invention, as a container for achieving the main technical problem, the container has a cylindrical mouth and neck, and the outer peripheral surface of the mouth and neck has a male thread and a radius below the male thread. A mouth-and-neck flange extending outward in the direction is formed, and a plurality of locking means protruding upward are formed on the upper surface of the mouth-and-neck flange at intervals in the circumferential direction The body,
The top surface wall is formed of a synthetic resin and has a cylindrical skirt wall depending from the periphery of the top surface wall, and a female thread that cooperates with the male thread of the container body is formed on the inner peripheral surface of the skirt wall. A lid flange is formed on the outer peripheral surface of the skirt wall, and the lid flange has a plurality of extensions extending from the lower end portion of the outer peripheral surface of the skirt wall at intervals in the circumferential direction. A connecting base portion connected to the lower end portion of the outer peripheral surface of the skirt wall, the connecting base portion having an easily accessible connecting piece connecting the extending piece and the adjacent extending piece; A lid including a first circumferential extension extending in one circumferential direction, a second circumferential extension extending in the other circumferential direction, and an extending end;
Consisting of
At least one of the locked means of the mouth-and-neck flange is a restraining-type locked means including a protrusion that defines a restraining space;
When sealing the mouth and neck of the container body with the lid, the lid is fitted on the mouth and neck of the container body, and the lid is rotated relative to the mouth and neck in the closing direction. The lid is attached to the mouth-neck portion of the container body by screwing the female thread into the male thread, and thus the extending end of each of the extending pieces of the lid flange is attached. The mouth-and-neck flange is positioned so as to face each of the locked means, and then the extended end is pressed against the locked means and heated so that the extended end is engaged. The extended end portion that is locked to the stop means and softened in the restrained type locked means is allowed to enter the restraint space,
When opening the mouth-and-neck portion of the container body, the easily breakable connecting piece of the lid flange is broken by rotating the lid in the opening direction with respect to the mouth-and-neck portion, and the extending piece Is deformed so that the extended end of each of the extended pieces of the lid flange is displaced downward relative to the lower end of the skirt wall, and then from the locked means to the mouth-neck flange The extended end of the extended piece is removed or the extended piece is broken,
A container is provided.

好ましくは、該拘束型被係止手段は平行に延在する一対の突条から構成されており、該一対の突条の少なくとも一方の他方に面する側面は下方に向かって該他方から離間する方向に傾斜している。該拘束型被係止手段の該一対の突条は、該口頸部の外周面に対して接線と平行に且つ該接線に対して半径方向外方に離間して配設されているのが好適である。該拘束型被係止手段は１８０度の間隔をおいて２個配設されているのが好都合である。   Preferably, the constraining-type locked means is composed of a pair of ridges extending in parallel, and a side surface facing the other of at least one of the pair of ridges is spaced downward from the other. Inclined in the direction. The pair of protrusions of the restraining-type locked means are disposed in parallel to the tangent to the outer peripheral surface of the mouth-neck portion and spaced apart radially outward from the tangent. Is preferred. Conveniently, two of the restraining-type locked means are arranged with an interval of 180 degrees.

本発明の容器においては、口頸部フランジの複数個の被係止手段の少なくとも１個は拘束空間を規定する突条を含んでおり、かかる被係止手段に蓋フランジの延出片の延出端部を押圧し加熱すると、軟化せしめられた延出端部が拘束空間内に進入し、かくして延出端部が充分に被係止手段に係止される。従って、容器本体の口頸部を開封する際には、蓋フランジの易破断接続片の少なくとも１個は確実に破断される。   In the container of the present invention, at least one of the plurality of locked means of the mouth-and-neck flange includes a protrusion that defines a restraining space, and the extended piece of the cover flange extends to the locked means. When the extended end portion is pressed and heated, the softened extended end portion enters the constraining space, and thus the extended end portion is sufficiently locked to the locked means. Therefore, when opening the mouth neck of the container body, at least one of the easily breakable connecting pieces of the lid flange is surely broken.

本発明に従って構成された容器における容器本体の口頸部と蓋とを、口頸部に蓋を装着する前の状態で示す斜面図。The slope view which shows the mouth neck part and lid | cover of a container main body in the container comprised according to this invention in the state before mounting | wearing a mouth neck part with a lid | cover. 図１に示す口頸部を、一部を断面で示す正面図。The front view which shows a part of mouth neck shown in FIG. 1 in a cross section. 図１に示す口頸部の平面図。The top view of the mouth neck part shown in FIG. 図１に示す蓋を、一部を断面で示す正面図。The front view which shows a part of cover shown in FIG. 1 in cross section. 図１に示す蓋の平面図。The top view of the lid | cover shown in FIG. 図１に示す口頸部に図１に示す蓋を装着した状態を、一部を断面で示す正面図。FIG. 2 is a front view partially showing a state in which the lid shown in FIG. 1 is attached to the mouth and neck shown in FIG. 図６に示す状態における、蓋フランジの延出片の延出端部と口頸部フランジの拘束型被係止手段との関係を示す拡大部分断面図。The expanded partial sectional view which shows the relationship between the extension end part of the extension piece of a cover flange in the state shown in FIG. 6, and the restraint type locking means of a mouth neck part flange. 拘束型被係止手段の変形例を示す拡大部分図。The enlarged partial view which shows the modification of a restraining type to-be-latched means. 拘束型被係止手段の他の変形例を示す図７と同様の拡大部分図。The expanded partial view similar to FIG. 7 which shows the other modification of a restraining type locked means. （ａ）、（ｂ）及び（ｃ）は、夫々、図６に示す状態から蓋を開方向に漸次回転せしめた時の状態変化を示す正面図。(A), (b) and (c) are front views showing a state change when the lid is gradually rotated in the opening direction from the state shown in FIG. 図６に示す状態から蓋を開方向に回転せしめて口頸部から離脱した後に、蓋４を再び口頸部に装着した状態を示す斜面図。FIG. 7 is a perspective view showing a state in which the lid is attached to the mouth and neck again after the lid is rotated in the opening direction from the state shown in FIG. 6 and detached from the mouth and neck.

図１には、本発明に従って構成された容器の好適実施形態における容器本体の口頸部２及びこの口頸部２に適用される蓋４が図示されている。   FIG. 1 shows a mouth and neck portion 2 of a container body and a lid 4 applied to the mouth and neck portion 2 in a preferred embodiment of a container constructed according to the present invention.

図１と共に図２及び図３を参照して説明すると、ポリエチレンテレフタレートの如き適宜の合成樹脂から形成されているのが好都合である図示の容器本体は、全体として円筒形状である口頸部２を有する。口頸部２の外周面には雄螺条６が形成されている。この雄螺条６には周方向に間隔をおいた複数個の領域、図示の実施形態では４個の領域にて通気用切欠８が形成されている。口頸部４の外周面には、更に、雄螺条６の下方において半径方向外方に延出する口頸部フランジ１０が形成されており、この口頸部フランジ１０の上面には上方に突出する複数個、図示の実施形態においては８個、の被係止手段１２ａ乃至１２ｈが周方向に間隔をおいて形成されていることが重要である。図示の実施形態においては、口頸部フランジ１０は円環板形状であり、その外周部はその内周部に比べて幾分薄くせしめられている。口頸部フランジ１０の上面と側面との境界領域及び側面と下面の境界領域は断面図において円弧状にせしめられている。被係止手段１２ａ乃至１２ｈの各々は、口頸部フランジ１０の外周部上に図３において左右方向に若干の間隔をおいて図３において上下方向に延びる複数個の突条から構成されている。更に詳述すると、被係止手段１２ａ及び１２ｅは５個の突条から構成され、被係止手段１２ｂ、１２ｄ、１２ｆ及び１２ｈは３個の突条から構成され、被係止手段１２ｃ及び１２ｇは２個の突条から構成されている。口頸部２を含む容器本体は図３において上下方向に分割される割型部材から構成された成形型を使用して好都合に成形されるが、被係止手段１２ａ乃至１２ｈを構成する突条は図３において上下方向に延在する形態である故に、被係止手段１２ａ乃至１２ｈの配設に起因して成形型から容器本体を型抜きする際に所謂無理抜きが生成されることはない。口頸部フランジ１０の上面には、更に、その上面の外周縁部に雄螺条６の上端の角度位置に対応して略三角形状の凹部１４が形成されている。   Referring to FIGS. 2 and 3 together with FIG. 1, the illustrated container body, which is advantageously formed from a suitable synthetic resin such as polyethylene terephthalate, has a mouth-and-neck portion 2 that is generally cylindrical. Have. A male thread 6 is formed on the outer peripheral surface of the mouth-and-neck portion 2. The male screw 6 is formed with ventilation notches 8 in a plurality of regions spaced in the circumferential direction, and in the illustrated embodiment, four regions. On the outer peripheral surface of the mouth-and-neck portion 4 is further formed a mouth-and-neck flange 10 extending radially outwardly below the male thread 6. It is important that a plurality of protruding means, that is, eight locked means 12a to 12h in the illustrated embodiment, are formed at intervals in the circumferential direction. In the illustrated embodiment, the mouth-and-neck flange 10 has an annular plate shape, and its outer peripheral portion is made somewhat thinner than its inner peripheral portion. The boundary region between the upper surface and the side surface of the mouth / neck flange 10 and the boundary region between the side surface and the lower surface are arcuate in a cross-sectional view. Each of the locked means 12a to 12h is composed of a plurality of protrusions extending in the vertical direction in FIG. 3 on the outer peripheral portion of the mouth-and-neck flange 10 with a slight interval in the horizontal direction in FIG. . More specifically, the locked means 12a and 12e are composed of five protrusions, and the locked means 12b, 12d, 12f and 12h are composed of three protrusions, and the locked means 12c and 12g. Consists of two ridges. The container body including the mouth / neck portion 2 is conveniently formed using a forming die composed of a split member that is divided in the vertical direction in FIG. 3, but the ridges constituting the locked means 12a to 12h. 3 is a form extending in the vertical direction in FIG. 3, so that the so-called forcible punching is not generated when the container body is punched from the mold due to the arrangement of the locked means 12a to 12h. . On the upper surface of the mouth-and-neck flange 10, a substantially triangular recess 14 is formed on the outer peripheral edge of the upper surface corresponding to the angular position of the upper end of the male screw 6.

本発明に従って構成された容器においては、口頸部フランジ１０の上面に配設されている複数個の被係止手段１２ａ乃至１２ｈのうちの少なくとも１個は拘束型被係止手段であることが重要である。図示の実施形態においては周方向に１８０度の間隔をおいて配設された２個の被係止手段１２ｃ及び１２ｇが拘束型被係止手段であり、他の被係止手段１２ａ、１２ｂ、１２ｄ、１２ｅ、１２ｆ及び１２ｈは非拘束型被係止手段である。更に詳述すると、非拘束型被係止手段１２ａ、１２ｂ、１２ｄ、１２ｅ、１２ｆ及び１２ｈにおける突条の各々は、その両側面が上方に向かって漸次接近する方向に傾斜し、従って横断面形状は厚さが上方に向かって漸次減少する円錐乃至円錐台形状である。隣接する突条間に存在する空間は、上方に向かって漸次幅広であり、上方に向かって完全に開放されている。これに対して、拘束型被係止手段１２ｃ及び１２ｇにおいては、相互に平行に延在する２個の突条は口頸部２の外周面の接線と平行に且つ接線に対して半径方向外方に離間して位置せしめられており、図７を参照することによって明確に理解される如く、２個の突条の一方、即ち半径方向内側に位置する突条の、他方の突条に面する側面１３は下方に向かって他方の突条から離間する方向に傾斜せしめられている。従って、一対の突条間に規定される空間のうちの、側面１３の下方に存在部分は上方に向かって開放されることなく閉塞され他拘束空間である。所望ならば、図８に示す如く、拘束型被係止手段１２ｃ及び１２ｇを上方に向かって片側に傾斜する１個の突条のみから構成することもできる（この場合には突条の片側面１３の下方に拘束空間が規定される）。或いは、図９に示す如く、２個の突条の双方を、他方の突条に面する側面１３が下方に向かって他方の突条から離間する方向に傾斜せしめられた形態にせしめることもできる。更に、図示の実施形態においては、２個の被係止手段１２ｃ及び１２ｇを非拘束型被係止手段としているが、所望ならば１個の被係止手段のみを或いは３個又はそれ以上の被係止手段を拘束型被係止手段にせしめることもできる。   In the container configured in accordance with the present invention, at least one of the plurality of locked means 12a to 12h disposed on the upper surface of the mouth-and-neck flange 10 is a restraining-type locked means. is important. In the illustrated embodiment, the two locked means 12c and 12g disposed at an interval of 180 degrees in the circumferential direction are restrained locked means, and the other locked means 12a, 12b, Reference numerals 12d, 12e, 12f, and 12h denote non-constrained locking means. More specifically, each of the ridges in the unconstrained locked means 12a, 12b, 12d, 12e, 12f and 12h is inclined in a direction in which both side surfaces gradually approach upward, and thus has a cross-sectional shape. Is a cone or truncated cone shape whose thickness gradually decreases upward. The space existing between the adjacent ridges is gradually wider upward, and is completely open upward. On the other hand, in the restraining-type locked means 12c and 12g, the two protrusions extending in parallel with each other are parallel to the tangent line of the outer peripheral surface of the mouth-and-neck part 2 and are radially outward with respect to the tangent line. As is clearly understood by referring to FIG. 7, it faces one of the two ridges, that is, the ridge located radially inward, on the other ridge. The side surface 13 is inclined downward in a direction away from the other protrusion. Therefore, in the space defined between the pair of protrusions, the existing portion below the side surface 13 is closed without being opened upward, and is another restricted space. If desired, as shown in FIG. 8, the constraining-type locked means 12c and 12g can be composed of only one ridge inclined upward on one side (in this case, one side of the ridge). A restraint space is defined below 13). Alternatively, as shown in FIG. 9, both of the two ridges can be formed such that the side surface 13 facing the other ridge is inclined downward in a direction away from the other ridge. . Furthermore, in the illustrated embodiment, the two locked means 12c and 12g are non-restrained locked means. However, if desired, only one locked means or three or more locked means may be used. The locked means can be made to be a restraining type locked means.

図１と共に図４及び図５を参照して説明を続けると、容器本体と同一の合成樹脂から形成することもできるが、口頸部２に対する密封性及び成形の容易性等の点から容器本体とは異なった合成樹脂、例えばポリプロピレン又はポリエチレンの如き適宜の合成樹脂から形成されているのが好都合である蓋４は、円形天面壁１６及びこの天面壁１６の周縁から垂下する円筒形スカート壁１８を有する。天面壁１６の内面における外周縁部には下方に延出する２条の筒状シール片、即ち外側筒状シール片２０及び内側筒状シール片２２が配設されている。更に、天面壁１６の内面における中央領域には周方向に間隔をおいて半径方向に延びる複数個の突状２４が形成されている（図４にそのうちの３個の突状２４が図示されている）。スカート壁１８の内周面には雌螺条２６が形成されている。この雌螺条２６には周方向に間隔おいた複数個の領域において通気用切欠２８が形成されている。天面壁１６の外面外周縁部からスカート壁１８の外周面下端までの領域には、そこに掛けられる指の滑りを防止するための多数の凹凸３０が形成されている。   4 and 5 together with FIG. 1, the container body can be formed from the same synthetic resin as the container body. The lid 4, which is advantageously formed from a different synthetic resin, for example a suitable synthetic resin such as polypropylene or polyethylene, has a circular top wall 16 and a cylindrical skirt wall 18 depending from the periphery of the top wall 16. Have Two cylindrical seal pieces extending downward, that is, an outer cylindrical seal piece 20 and an inner cylindrical seal piece 22 are disposed on the outer peripheral edge of the inner surface of the top wall 16. Furthermore, a plurality of protrusions 24 extending in the radial direction are formed in the central region on the inner surface of the top wall 16 (Fig. 4 shows three protrusions 24 shown in FIG. 4). ) A female thread 26 is formed on the inner peripheral surface of the skirt wall 18. The female thread 26 is formed with ventilation notches 28 in a plurality of regions spaced in the circumferential direction. In the region from the outer peripheral edge of the top surface wall 16 to the lower end of the outer peripheral surface of the skirt wall 18, a large number of projections and depressions 30 are formed for preventing the slipping of the fingers hung thereon.

図１と共に図４及び図５を参照して説明を続けると、スカート壁１８の外周面にはその下端部から半径方向外方に延出する蓋フランジ３２が形成されていることが重要である。図示の実施形態においては、蓋フランジ３２は全体として円環板形状であり、周方向に等間隔をおいてスカート壁１８の下端から延出する複数個、図示の場合は８個、の延出片３４を含んでいる。延出片３４の各々は、スカ−ト壁１８の外周面に接続された接続基部３６、かかる接続基部３６から開方向（図５において反時計方向）、即ち後述するとおりにして容器本体の口頸部２を開封する際の蓋４の回転方向、に円弧状に延びる第一の周方向延出部３８、第一の周方向延出部３８の延出端から半径方向外方に延出する接続部４０、接続部４０の延出端から閉方向（図５において時計方向）、即ち後述するとおりにして容器本体の口頸部２に蓋４を装着して口頸部２を密封する際の蓋４の回転方向、に円弧状に延出する第二の周方向延出部４２及び第二の周方向延出部４２の延出端から更に閉方向に円弧状に延出する延出端部４４を有する。延出片３４の各々における延出端部４４は周方向において接続基部３６に整合して位置せしめられている。換言すれば、延出片３４の各々における接続基部３６と延出端部４４とは同一角度領域に位置せしめられている。図１及び図５を参照することによって明確に理解される如く、延出片３４の各々における接続基部３６及び延出端部４４の幅は他の部分即ち第一の周方向延出部３８、接続部４０及び第二の周方向延出部４２の幅よりも大きくせしめられている。また、延出片３４の各々において、接続基部３６、第一の周方向延出部３８及び接続部４０の厚さは、第二の周方向延出部４２及び延出端部４４の厚さよりも幾分小さく設定されている。蓋フランジ３２は、更に、延出片３４を順次に接続する（換言すれば、隣接する延出片３４間を接続する）複数個、図示の場合は８個、の易破断接続片４６を含んでいる。図示の実施形態においては、易破断接続片４６は隣接する延出片３４の一方の延出端部４４と接続部４０とを接続している。易破断接続片４６の横断面積は充分に小さく、易破断接続片４６の破断強度は比較的小さい。   4 and 5 together with FIG. 1, it is important that the outer peripheral surface of the skirt wall 18 is formed with a lid flange 32 extending radially outward from its lower end. . In the illustrated embodiment, the lid flange 32 is generally in the shape of an annular plate, and a plurality of, in the illustrated case, eight are extended from the lower end of the skirt wall 18 at equal intervals in the circumferential direction. A piece 34 is included. Each of the extending pieces 34 has a connection base 36 connected to the outer peripheral surface of the skirt wall 18, and an opening direction (counterclockwise in FIG. 5) from the connection base 36, that is, as described later. A first circumferentially extending portion 38 extending in an arc shape in the rotational direction of the lid 4 when the neck 2 is opened, and extending radially outward from the extending end of the first circumferentially extending portion 38. The connecting portion 40 is closed from the extending end of the connecting portion 40 (clockwise in FIG. 5), that is, as described later, the lid 4 is attached to the mouth neck portion 2 of the container body to seal the mouth neck portion 2. The second circumferentially extending portion 42 extending in an arc shape in the rotating direction of the lid 4 and the extending end of the second circumferentially extending portion 42 further extending in an arc shape in the closing direction An exit end 44 is provided. The extended end 44 of each of the extended pieces 34 is positioned in alignment with the connection base 36 in the circumferential direction. In other words, the connection base portion 36 and the extension end portion 44 in each of the extension pieces 34 are positioned in the same angle region. As clearly understood by referring to FIGS. 1 and 5, the width of the connection base 36 and the extension end 44 in each of the extension pieces 34 is the other portion, that is, the first circumferential extension 38, The width of the connecting portion 40 and the second circumferentially extending portion 42 is made larger. In each of the extended pieces 34, the thickness of the connection base 36, the first circumferential extension 38, and the connection 40 is greater than the thickness of the second circumferential extension 42 and the extension end 44. Is set somewhat smaller. The lid flange 32 further includes a plurality of, in the illustrated case, eight easily breakable connecting pieces 46 for connecting the extending pieces 34 in sequence (in other words, connecting the adjacent extending pieces 34). It is out. In the illustrated embodiment, the easily breakable connecting piece 46 connects one extending end 44 of the adjacent extending piece 34 and the connecting portion 40. The cross-sectional area of the easily breakable connecting piece 46 is sufficiently small, and the breaking strength of the easily breakable connecting piece 46 is relatively small.

図１と共に図６を参照して説明を続けると、容器本体１内に清涼飲料の如き内容物を充填した後に容器本体の口頸部２に蓋４を装着して口頸部２を密封する際には、口頸部２に蓋４を被嵌し蓋４を閉方向、即ち図６において上方から見て時計方向、に回転せしめ、かくして口頸部２の雄螺条６に蓋４の雌螺条２６を螺合せしめる。蓋４は閉方向への回転と共に下方に移動せしめられ、そして雄螺条６に雌螺条２６を所要トルクで充分に螺合せしめると、図６に明確に図示する如く、蓋４の天面壁１６の内面に形成されている外側筒状シール片２０及び内側筒状シール片２２が、夫々、口頸部２の外周面及び内周面に密接せしめられて口頸部２が密封される。そしてまた、蓋フランジ３２の延出片３４の各々の延出端部４４が口頸部フランジ１０の被係止手段１２ａ乃至１２ｈの各々に対向して位置せしめられ、延出片３４の各々の延出端部４４が被係止手段１２ａ乃至１２ｈの各々に接触乃至近接せしめられる。しかる後に、延出片３４の各々の延出端部４４を口頸部フランジ１０の被係止手段１２ａ乃至１２ｈの各々に押圧し局部的に加熱する。かくすると、延出端部４４が軟化乃至溶融せしめられて、図７に図示する如く、延出片３４の各々の延出端部４４が被係止手段１２ａ乃至１２ｈを構成している複数個の突状を部分的に包み込む状態に変形され、延出片３４の各々の延出端部４４が被係止手段１２ａ乃至１２ｈに係止せしめられる。延出片３４の各々の延出端部４４が軟化乃至溶融されると、延出端部４４が被係止手段１２ａ乃至１２ｈに溶着され得るが、一般に、蓋４を形成している合成樹脂と容器本体を形成している合成樹脂が異なるものである場合には、上記溶着は生成されるとしても溶着強度（従って係止強度）は著しく小さい。しかしながら、図７を参照することによって明確に理解され得るとおり、拘束型被係止手段１２ｃ及び１２ｇに対しては、延出片３４における軟化乃至溶融せしめられた延出端部４４が拘束空間、即ち側面１３の下方の空間、内に進入し、これによって延出端部４４が充分強固に係止せしめられる。延出片３４の各々の延出端部４４の局部的加熱は、超音波溶着機として市販されている超音波発振手段によって延出片３４の各々の延出端部４４に超音波を施すことによって好都合に遂行することができる。   The description will be continued with reference to FIG. 1 and FIG. 6, and after filling the container body 1 with a content such as a soft drink, the mouth and neck part 2 of the container body is attached with a lid 4 to seal the mouth and neck part 2. In this case, the lid 4 is fitted on the mouth-and-neck portion 2 and the lid 4 is rotated in the closing direction, that is, clockwise when viewed from above in FIG. The female thread 26 is screwed together. The lid 4 is moved downward with the rotation in the closing direction, and when the female thread 26 is sufficiently screwed to the male thread 6 with a required torque, the top wall of the lid 4 is clearly shown in FIG. The outer cylindrical seal piece 20 and the inner cylindrical seal piece 22 formed on the inner surface of 16 are brought into close contact with the outer peripheral surface and the inner peripheral surface of the mouth-and-neck portion 2 to seal the mouth-and-neck portion 2. Further, each extended end 44 of the extended piece 34 of the lid flange 32 is positioned to face each of the locked means 12a to 12h of the mouth-and-neck flange 10, and each of the extended pieces 34 is provided. The extended end 44 is brought into contact with or close to each of the locked means 12a to 12h. Thereafter, each extended end portion 44 of the extended piece 34 is pressed against each of the locked means 12a to 12h of the mouth-and-neck flange 10 and heated locally. In this way, the extended end portion 44 is softened or melted, and as shown in FIG. 7, a plurality of extended end portions 44 of the extended piece 34 constitute the locked means 12a to 12h. The projecting shape is partially wrapped so that the extended end portions 44 of the extended pieces 34 are locked to the locked means 12a to 12h. When each extended end 44 of the extended piece 34 is softened or melted, the extended end 44 can be welded to the locked means 12a to 12h. Generally, the synthetic resin forming the lid 4 is used. When the synthetic resin forming the container body is different, the welding strength (and hence the locking strength) is remarkably small even if the welding is generated. However, as can be clearly understood by referring to FIG. 7, for the restraining-type locked means 12c and 12g, the extended end portion 44 softened or melted in the extending piece 34 has a restraining space, That is, it enters the space below the side surface 13, whereby the extended end portion 44 is locked sufficiently firmly. The local heating of each extended end 44 of the extended piece 34 is performed by applying ultrasonic waves to each extended end 44 of the extended piece 34 by ultrasonic oscillating means commercially available as an ultrasonic welding machine. Can be carried out conveniently.

容器内容物を消費するために容器本体の口頸部２を開封する際には、蓋４を開方向、即ち図６において上方から見て反時計方向、に回転せしめる。容器本体の口頸部２に対して蓋４が開方向に回転せしめられると、蓋フランジ３２の延出片３４の各々における接続基部３６は蓋４の回転に付随して開方向に移動せしめられる。一方、延出端部４４は口頸部フランジ１０の被係止手段１２ａ乃至１２ｈに係止せしめられている故に開方向への移動が阻止される。蓋４が図１０（ａ）に図示される位置まで開方向に回転せしめられると、蓋フランジ３２の延出片３４及び易破断接続片４６の各々は弾性的に若干伸張せしめられ、そしてまた延出片３４の各々における第一の周方向延出部３８及び第二の周方向延出部４２が、夫々、開方向に向かって下方及び上方に傾斜せしめられる。蓋４の開方向への回転が更に進行すると、図１０（ｂ）に図示する如く、蓋フランジ３２における易破断接続片４６が破断され、そしてまた延出片３４の各々における第一の周方向延出部３８及び第二の周方向延出部４２の傾斜が増大せしめられ、第一の周方向延出部３８も開方向に向かって上方に傾斜するようになる。蓋４の開方向への回転が更に進行すると、図１０（ｃ）に図示する如く、蓋フランジ３２の延出片３４の各々における延出端部４４が口頸部フランジ１０の被係止手段１２ａ乃至１２ｈから離脱される。かくすると、蓋フランジ３２の延出片３４の各々における第一の周方向延出部３８及び第二の周方向延出部４２の傾斜は弾性的復元によって低減せしめられ、第一の周方向延出部３８は開方向に向かって下方に傾斜する状態に戻る（図１１を参照されたい）。蓋フランジ３２の延出片３４の各々における延出端部４４が口頸部フランジ１０の被係止手段１２ａ乃至１２ｈから離脱された後においては、蓋４の開方向への回転に応じて蓋４の全体が上昇せしめられ、蓋４が口頸部２から離脱されて口頸部２が開封される。蓋フランジ３２の易破断接続片４６の破断は蓋４の開方向への回転開始と同時ではなくて蓋４の開方向の回転が幾分進行した時点で遂行され、そしてまた蓋フランジ３２の延出片３４の各々における延出端部４４が口頸部フランジ１０の被係止手段１２ａ乃至１２ｈから離脱されるのは蓋４の開方向への回転が更に進行した時点である。かような次第であるので、蓋４の開方向への回転開始時、蓋フランジ３２の易破断接続片４６の破断時、及び口頸部フランジ１０の被係止手段１２ａ乃至１２ｈからの蓋フランジ３２の延出片３４の各々の延出端部４４の離脱時に、蓋４に加えるべきトルクが過大になることはない。容器本体の口頸部２から離脱せしめられた蓋４においては、図１１に明確に図示する如く、蓋フランジ３２における易破断接続片４６の各々が破断されていると共に、蓋フランジ３２の延出片３４の各々の第一周方向延出部３６及び第二の周方向延出部４０が水平に延在するのではなくて傾斜して延在する状態に変形されており、それ故に蓋４が開方向に回転され容器本体の口頸部２が開封されていることが明示される。   When the mouth and neck 2 of the container body is opened to consume the container contents, the lid 4 is rotated in the opening direction, that is, counterclockwise as viewed from above in FIG. When the lid 4 is rotated in the opening direction with respect to the mouth-and-neck portion 2 of the container body, the connection base 36 in each of the extending pieces 34 of the lid flange 32 is moved in the opening direction in association with the rotation of the lid 4. . On the other hand, since the extended end portion 44 is locked by the locked means 12a to 12h of the mouth-and-neck flange 10, movement in the opening direction is prevented. When the lid 4 is rotated in the opening direction to the position shown in FIG. 10 (a), each of the extended piece 34 and the easily breakable connecting piece 46 of the lid flange 32 is elastically slightly stretched and extended. The first circumferentially extending portion 38 and the second circumferentially extending portion 42 in each of the protruding pieces 34 are inclined downward and upward in the opening direction, respectively. When the rotation of the lid 4 in the opening direction further proceeds, as shown in FIG. 10B, the easily breakable connecting piece 46 in the lid flange 32 is broken, and the first circumferential direction in each of the extending pieces 34 is also obtained. The inclination of the extension part 38 and the second circumferential extension part 42 is increased, and the first circumferential extension part 38 is also inclined upward in the opening direction. When the rotation of the lid 4 in the opening direction further proceeds, as shown in FIG. 10 (c), the extension end portions 44 of the extension pieces 34 of the lid flange 32 are locked by the locking means of the mouth-neck flange 10. Detach from 12a to 12h. Thus, the inclination of the first circumferential extension 38 and the second circumferential extension 42 in each of the extension pieces 34 of the lid flange 32 is reduced by elastic restoration, and the first circumferential extension The protruding portion 38 returns to the state of being inclined downward in the opening direction (see FIG. 11). After the extended end portion 44 of each of the extended pieces 34 of the lid flange 32 is detached from the locked means 12a to 12h of the mouth-and-neck flange 10, the lid 4 is rotated according to the rotation of the lid 4 in the opening direction. 4 is raised, the lid 4 is detached from the mouth neck 2 and the mouth neck 2 is opened. The breakage of the easily breakable connecting piece 46 of the lid flange 32 is not performed simultaneously with the start of the rotation of the lid 4 in the opening direction, but at the time when the rotation of the lid 4 in the opening direction has progressed to some extent. The extended end 44 of each of the protruding pieces 34 is detached from the locked means 12a to 12h of the mouth-and-neck flange 10 when the rotation of the lid 4 in the opening direction further proceeds. Therefore, when the lid 4 starts to rotate in the opening direction, when the easily breakable connecting piece 46 of the lid flange 32 is broken, and when the lid flange from the locked means 12a to 12h of the mouth-and-neck flange 10 is provided. The torque to be applied to the lid 4 does not become excessive when the extended end portion 44 of each of the 32 extended pieces 34 is detached. In the lid 4 detached from the mouth-and-neck portion 2 of the container body, each easily breakable connecting piece 46 in the lid flange 32 is broken and the lid flange 32 is extended as clearly shown in FIG. The first circumferentially extending portion 36 and the second circumferentially extending portion 40 of each of the pieces 34 are deformed not to extend horizontally but to extend in an inclined manner, and therefore the lid 4 Is rotated in the opening direction to clearly show that the mouth-neck portion 2 of the container body is opened.

而して、口頸部フランジ１０の被係止手段１２ａ乃至１２ｈに対する蓋フランジ３２の延出片３４における延出端部４４の係止が不充分である場合、易破断接続片４６が切断されることなく、延出端部４４が被係止手段１２ａ乃至１２ｈから離脱されてしまう虞がある。然るに、本発明に従って構成された容器においては、被係止手段１２ｃ及び１２ｇは拘束型被係止手段であり、被係止手段１２ｃ及び１２ｇに関連する延出片３４の延出端部４４は充分強固に被係止手段１２ｃ及び１２ｇに係止せしめられており、少なくともこれらの延出片３４に隣接する易破断接続片４６は確実に破断される。拘束型被係止手段１２ｃ及び１２ｇに関連する延出片３４の延出端部４４は充分強固に被係止手段１２ｃ及び１２ｇに係止されている故に、一般に、非拘束型被係止手段１２ａ、１２ｂ、１２ｄ、１２ｅ、１２ｆ及び１２ｈから延出片３４の延出端部４４が離隔された後に幾分かの時間遅れの後に拘束型被係止手段１２ｃ及び１２ｇから延出片３４の延出端部４４が離脱される。所望ならば、延出端部４４が拘束型被係止手段１２ｃ及び１２ｇに係止せしめられる延出片３４においては、例えばその接続部４０に断面積が小さい易破断部を形成し、口頸部２を開封する際には、延出片３４の易破断部が破断されて延出端部４４が切り離され、延出端部４４は被係止手段１２ｃ及び１２ｇから離脱することなく係止され続けるようになすこともできる。   Thus, when the extension end portion 44 of the extension piece 34 of the lid flange 32 is insufficiently locked to the locked means 12a to 12h of the mouth-and-neck flange 10, the easily breakable connecting piece 46 is cut. The extended end portion 44 may be detached from the locked means 12a to 12h. However, in the container constructed in accordance with the present invention, the locked means 12c and 12g are restrained locked means, and the extended end 44 of the extended piece 34 associated with the locked means 12c and 12g is The easily-breakable connecting piece 46 adjacent to at least these extending pieces 34 is reliably broken by being locked to the locked means 12c and 12g sufficiently firmly. In general, the extended end portion 44 of the extended piece 34 associated with the restraining-type locked means 12c and 12g is locked sufficiently firmly with the locked means 12c and 12g. 12a, 12b, 12d, 12e, 12f and 12h after the extension end 44 of the extension piece 34 is separated from the restraining-type locked means 12c and 12g after a certain time delay. The extended end 44 is detached. If desired, in the extended piece 34 in which the extended end portion 44 is locked to the restraining-type locked means 12c and 12g, an easily breakable portion having a small cross-sectional area is formed in the connecting portion 40, for example. When the portion 2 is opened, the easily breakable portion of the extension piece 34 is broken and the extension end portion 44 is cut off, and the extension end portion 44 is locked without being detached from the locked means 12c and 12g. It can also be made to continue.

容器本体内の内容物を幾分か残留せしめた状態で口頸部２を仮密封することが望まれる場合には、図１１に図示する如く、口頸部２に再び蓋４を被嵌し、蓋４を閉方向に回転せしめて蓋４の雌螺条２６を口頸部２の雄螺条６に所要とおりに螺合せしめ、かくして蓋４の天面壁１６の内面に形成されている外側筒状シール片２０及び内側筒状シール片２２を、夫々、口頸部２の外周面及び内周面に密接せしめればよい。   If it is desired to temporarily seal the mouth-and-neck portion 2 with some contents in the container body remaining, the lid 4 is again fitted on the mouth-and-neck portion 2 as shown in FIG. The lid 4 is rotated in the closing direction so that the female thread 26 of the lid 4 is screwed into the male thread 6 of the mouth-and-neck portion 2 as required, and thus the outside formed on the inner surface of the top wall 16 of the lid 4. The cylindrical seal piece 20 and the inner cylindrical seal piece 22 may be brought into close contact with the outer peripheral surface and the inner peripheral surface of the mouth-and-neck portion 2, respectively.

２：容器本体の口頸部
４：蓋
６：雄螺条
１０：口頸部フランジ
１２ａ乃至１２ｈ：被係止手段
１２ｃ及び１２ｇ：拘束型被係止手段
１６：天面壁
１８：スカート壁
２６：雌螺条
３２：蓋フランジ
３４：延出片
３６：接続基部
３８：第一の周方向延出部
４０：接続部
４２：第二の周方向延出部
４４：延出端部
４６：易破断接続片 2: mouth neck of container body 4: lid 6: male thread 10: mouth neck flange 12a to 12h: locked means 12c and 12g: restraining type locked means 16: top wall 18: skirt wall 26: Female thread 32: Cover flange 34: Extension piece 36: Connection base 38: First circumferential extension 40: Connection 42: Second circumferential extension 44: Extension end 46: Easy break Connecting piece

Claims (4)

円筒形状の口頸部を有し、該口頸部の外周面には雄螺条及び該雄螺条の下方において半径方向外方に延出する口頸部フランジが形成されており、該口頸部フランジの上面には上方に突出する複数個の被係止手段が周方向に間隔をおいて形成されている容器本体と、
合成樹脂から形成され天面壁及び該天面壁の周縁から垂下する円筒形状のスカート壁を有し、該スカート壁の内周面には該容器本体の該雄螺条と協働する雌螺条が形成されており、該スカート壁の外周面には蓋フランジが形成されており、該蓋フランジは周方向に間隔をおいて該スカート壁の該外周面の下端部から延出する複数個の延出片と、隣接する該延出片を接続している易破断接続片を有し、該延出片の各々は該スカート壁の該外周面の下端部に接続された接続基部、該接続基部から周方向片方向に延びる第一の周方向延出部、周方向他方向に延びる第二の周方向延出部及び延出端部を含む蓋と、
から構成され、
該口頸部フランジの該被係止手段の少なくとも１個は、拘束空間を規定する突条を含んでいる拘束型被係止手段であり、
該容器本体の該口頸部を該蓋によって密封する際には、該容器本体の該口頸部に該蓋を被嵌し該口頸部に対して該蓋を閉方向に相対的に回転せしめて該雄螺条に該雌螺条を螺合せしめることによって該容器本体の該口頸部に該蓋が装着され、かくして該蓋フランジの該延出片の各々の該延出端部が該口頸部フランジの該被係止手段の各々に対向して位置せしめられ、しかる後に該延出端部を該被係止手段に押圧し加熱することによって該延出端部が該被係止手段に係止せしめられ、該拘束型被係止手段においては軟化せしめられた該延出端部が該拘束空間内に進入せしめられ、
該容器本体の該口頸部を開封する際には、該口頸部に対して該蓋を開方向に回転せしめることによって、該蓋フランジの該易破断接続片が破断され、該延出片が変形されて該蓋フランジの該延出片の各々の該延出端部が該スカート壁の下端に対して相対的に下方に変位され、しかる後に該被係止手段から該蓋フランジの該延出片の該延出端部が離脱されるか或いは該延出片が破断される、
ことを特徴とする容器。 The mouth and neck portion has a cylindrical shape, and a male thread and a mouth and neck flange extending radially outwardly below the male thread are formed on the outer peripheral surface of the mouth neck. A container body in which a plurality of locking means projecting upward are formed at intervals in the circumferential direction on the upper surface of the neck flange;
The top surface wall is formed of a synthetic resin and has a cylindrical skirt wall depending from the periphery of the top surface wall, and a female thread that cooperates with the male thread of the container body is formed on the inner peripheral surface of the skirt wall. A lid flange is formed on the outer peripheral surface of the skirt wall, and the lid flange has a plurality of extensions extending from the lower end portion of the outer peripheral surface of the skirt wall at intervals in the circumferential direction. A connecting base portion connected to the lower end portion of the outer peripheral surface of the skirt wall, the connecting base portion having an easily accessible connecting piece connecting the extending piece and the adjacent extending piece; A lid including a first circumferential extension extending in one circumferential direction, a second circumferential extension extending in the other circumferential direction, and an extending end;
Consisting of
At least one of the locked means of the mouth-and-neck flange is a restraining-type locked means including a protrusion that defines a restraining space;
When sealing the mouth and neck of the container body with the lid, the lid is fitted on the mouth and neck of the container body, and the lid is rotated relative to the mouth and neck in the closing direction. The lid is attached to the mouth-neck portion of the container body by screwing the female thread into the male thread, and thus the extending end of each of the extending pieces of the lid flange is attached. The mouth-and-neck flange is positioned so as to face each of the locked means, and then the extended end is pressed against the locked means and heated so that the extended end is engaged. The extended end portion that is locked to the stop means and softened in the restrained type locked means is allowed to enter the restraint space,
When opening the mouth-and-neck portion of the container body, the easily breakable connecting piece of the lid flange is broken by rotating the lid in the opening direction with respect to the mouth-and-neck portion, and the extending piece Is deformed so that the extended end of each of the extended pieces of the lid flange is displaced downward relative to the lower end of the skirt wall, and then the locked means disengages the lid flange. The extended end of the extended piece is detached or the extended piece is broken,
A container characterized by that. 該拘束型被係止手段は平行に延在する一対の突条から構成されており、該一対の突条の少なくとも一方の他方に面する側面は下方に向かって該他方から離間する方向に傾斜している、請求項１記載の容器。   The constraining-type locked means is composed of a pair of protrusions extending in parallel, and a side surface facing the other of at least one of the pair of protrusions is inclined downward in a direction away from the other. The container according to claim 1. 該拘束型被係止手段の該一対の突条は、該口頸部の外周面に対して接線と平行に且つ該接線に対して半径方向外方に離間して配設されている、請求項２記載の容器。   The pair of protrusions of the restraining-type locked means are disposed in parallel to a tangent to the outer peripheral surface of the mouth-and-neck portion and spaced radially outward from the tangent. Item 3. The container according to Item 2. 該拘束型被係止手段は１８０度の間隔をおいて２個配設されている、請求項１から３までのいずれかに記載の容器。   The container according to any one of claims 1 to 3, wherein two of the restraining-type locked means are disposed at an interval of 180 degrees.
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JP2019503313A (en) * 2016-02-02 2019-02-07 ナイアガラ・ボトリング・リミテツド・ライアビリテイー・カンパニー Tamper evidence bridge
US11214410B2 (en) 2016-02-02 2022-01-04 Niagara Bottling, Llc Tamper evidence container closure
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