JP6074302B2 - Container lid composed of inner stopper and lid body - Google Patents

Container lid composed of inner stopper and lid body Download PDF

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JP6074302B2
JP6074302B2 JP2013069608A JP2013069608A JP6074302B2 JP 6074302 B2 JP6074302 B2 JP 6074302B2 JP 2013069608 A JP2013069608 A JP 2013069608A JP 2013069608 A JP2013069608 A JP 2013069608A JP 6074302 B2 JP6074302 B2 JP 6074302B2
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wall
inner plug
lid
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container
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JP2014189330A (en
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尚 杉山
尚 杉山
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Nippon Closures Co Ltd
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Priority to JP2013069608A priority Critical patent/JP6074302B2/en
Priority to KR1020157023664A priority patent/KR101943696B1/en
Priority to US14/763,313 priority patent/US10343826B2/en
Priority to EP14756423.1A priority patent/EP2962952B1/en
Priority to CN201480011248.6A priority patent/CN105008239B/en
Priority to PCT/JP2014/053253 priority patent/WO2014132800A1/en
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Description

本発明は、容器の口頸部に装着される合成樹脂製中栓とこの中栓に装着される合成樹脂製蓋本体とから構成された容器蓋に関する。   The present invention relates to a container lid composed of a synthetic resin inner stopper attached to the mouth and neck of the container and a synthetic resin lid main body attached to the inner stopper.

下記特許文献1には、容器の口頸部に装着される合成樹脂製中栓とこの中栓に装着される合成樹脂製蓋本体とから構成された容器蓋が開示されている。中栓は円形閉塞壁及びこの閉塞壁の外周縁に接続された筒形装着壁を含み、装着壁を容器の口頸部の外周面に嵌合せしめることによって容器の口頸部に装着され、閉塞壁が容器の口頸部を閉塞する。蓋本体は円形覆壁及びこの覆壁の外周面に接続された嵌合壁を含み、嵌合壁の内周面に形成されている雌螺条を中栓の装着壁の外周面に形成されている雄螺条に螺合せしめることによって中栓に装着され、覆壁は中栓の閉塞壁の上方に位置する。中栓の閉塞壁には勾玉状の除去領域を規定する破断可能薄肉ラインが形成されていると共に、除去領域から上方に延出する鍵状被係止片が形成されている。蓋本体の覆壁の下面には中栓の被係止片に係止せしめられる鍵状係止片が形成されている。中栓に蓋本体が所用とおりに装着されている状態において、中栓に対して蓋本体を上方から見て反時計方向(中栓から蓋本体を離脱する方向)に回転せしめると、蓋本体の係止片及び中栓の被係止片を介して中栓の除去領域に力が加えられ、破断可能薄肉ラインが破断されて除去領域が閉塞壁から除去され、これによって閉塞壁に通過開口が生成される。   Patent Document 1 below discloses a container lid that is composed of a synthetic resin inner stopper attached to the mouth and neck of the container and a synthetic resin lid main body attached to the inner stopper. The inner plug includes a circular obstruction wall and a cylindrical attachment wall connected to the outer peripheral edge of the obstruction wall, and is attached to the mouth and neck of the container by fitting the attachment wall to the outer peripheral surface of the mouth and neck of the container. The obstruction wall occludes the mouth and neck of the container. The lid body includes a circular cover wall and a fitting wall connected to the outer peripheral surface of the cover wall, and female threads formed on the inner peripheral surface of the fitting wall are formed on the outer peripheral surface of the inner plug mounting wall. It is attached to the inner plug by being screwed into the male thread, and the covering wall is located above the closing wall of the inner plug. A breakable thin line that defines a ball-shaped removal area is formed on the closing wall of the inner plug, and a key-like locked piece that extends upward from the removal area is formed. On the lower surface of the cover wall of the lid body, a key-like locking piece that is locked to the locking piece of the inner plug is formed. When the lid body is attached to the inner plug as required, when the lid body is rotated counterclockwise (in the direction to remove the lid body from the inner plug) when viewed from above, the lid body A force is applied to the removal region of the inner plug through the locking piece and the stoppered piece of the inner plug, the breakable thin line is broken and the removal region is removed from the blocking wall, and thereby a passage opening is formed in the blocking wall. Generated.

特開2005−59933号公報JP 2005-59933 A

上記特許文献1に開示されている上記のとおりの容器蓋は、中栓の閉塞壁に指を当接せしめて衛生上の問題を発生せしめることなく、単に中栓に対して蓋本体を回転せしめることによって中栓の閉塞壁に形成されている破断可能薄肉ラインを破断して除去領域を閉塞壁から除去して通過開口を生成することができる。しかしながら、未だ充分に満足し得るものではなく、除去領域が閉塞壁から分離されて所謂屑片となり、かかる屑片が容器内に入り込んでしまう、或いは屑片を取り出して破棄するという煩雑な処理を遂行することが必要である。また、係止片と被係止片との係止が必ずしも充分ではないことに起因して、破断可能薄肉ラインを所要とおりに破断することができない虞もある。   The above-described container lid disclosed in Patent Document 1 simply rotates the lid body with respect to the inner plug without causing a sanitary problem by bringing a finger into contact with the closing wall of the inner plug. Thus, the breakable thin line formed on the closed wall of the inner plug can be broken to remove the removal region from the closed wall, thereby generating a passage opening. However, it is still not fully satisfactory, and the removal region is separated from the closed wall to become so-called waste pieces, and such waste pieces enter the container, or the complicated process of taking out and discarding the waste pieces is performed. It is necessary to carry out. Further, there is a possibility that the breakable thin line cannot be broken as required because the locking of the locking piece and the locked piece is not always sufficient.

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、所謂屑片を生成せしめることなく中栓の閉塞壁に通過開口を生成することができる、新規且つ改良された容器蓋を提供することである。   The present invention has been made in view of the above-mentioned facts, and the main technical problem thereof is a new and improved container capable of generating a passage opening in the closed wall of the inner plug without generating so-called scrap pieces. To provide a lid.

本発明の他の技術的課題は、上記主たる技術的課題の解決に加えて、破断可能薄肉ラインを充分確実に所要とおりに破断することができる、新規且つ改良された容器蓋を提供することである。   Another technical problem of the present invention is to provide a new and improved container lid capable of sufficiently breaking a breakable thin-wall line as required, in addition to solving the above-mentioned main technical problems. is there.

本発明者は鋭意研究及び実験の結果、中栓の閉塞壁に形成する破断可能ラインを独特な形態にす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。   As a result of intensive studies and experiments, the present inventor has found that the main technical problem can be achieved by making the breakable line formed in the closing wall of the inner plug into a unique shape.

即ち、本発明によれば、上記主たる技術的課題を達成することができる容器蓋として、容器の口頸部に装着される合成樹脂製中栓と該中栓に装着される合成樹脂製蓋本体とから構成され、
該中栓は円形閉塞壁及び該閉塞壁の外周縁に接続された筒形装着壁を含み、該装着壁を容器の口頸部の外周面に嵌合せしめることによって容器の口頸部に装着され、該閉塞壁が容器の口頸部を閉塞し、
該蓋本体は円形覆壁及び該覆壁の外周縁に接続された筒形嵌合壁を含み、該嵌合壁を該中栓の該装着壁の外周面に嵌合することによって該中栓に回転自在に装着され、該覆壁が該中栓の該閉塞壁の上方に位置し、
該中栓の該閉塞壁には少なくとも1個の破断可能薄肉ラインが形成されており、該破断可能薄肉ラインは破断開始端部から延びる外側弧状部と該破断開始端部から延びる内側弧状部とを有し、該外側弧状部と該内側弧状部との間に弧状変形領域が規定されており、
該変形領域には被係止手段が付設されており、
該蓋本体の該覆壁には少なくとも1個の排出開口が形成されており、該覆壁の下面には該被係止手段と協働する係止手段が配設されており、
該中栓に該蓋本体を装着した状態において該係止手段は所定方向に見て該被係止手段の上流側に位置し、該中栓に対して該蓋本体を該所定方向に回転せしめると該係止手段が該被係止手段に係止せしめられ、該中栓に対して該蓋本体を該所定方向に更に回転せしめると該係止手段及び該被係止手段を介して該変形領域に力が加えられ、該中栓の該破断可能薄肉ラインが破断されると共に該変形領域が変形され、これによって該中栓の該閉塞壁に通過開口が生成され、
該変形領域の該所定方向に見て少なくとも上流部は上流に向かって漸次上方に傾斜せしめられている、
ことを特徴とする容器蓋が提供される。
That is, according to the present invention, as a container lid capable of achieving the main technical problem, a synthetic resin inner plug attached to the mouth and neck of the container and a synthetic resin lid main body attached to the inner plug And consists of
The inner plug includes a circular blocking wall and a cylindrical mounting wall connected to the outer peripheral edge of the blocking wall, and is fitted to the mouth and neck of the container by fitting the mounting wall to the outer peripheral surface of the mouth and neck of the container The occlusion wall occludes the mouth and neck of the container;
The lid body includes a circular covering wall and a cylindrical fitting wall connected to the outer peripheral edge of the covering wall, and the inner plug is fitted to the outer peripheral surface of the mounting wall of the inner plug. The cover wall is located above the blocking wall of the inner plug,
At least one breakable thin line is formed on the closing wall of the inner plug, and the breakable thin line includes an outer arcuate portion extending from the break start end and an inner arcuate portion extending from the break start end. An arcuate deformation region is defined between the outer arcuate part and the inner arcuate part,
Locked means are attached to the deformation region,
At least one discharge opening is formed in the cover wall of the lid body, and locking means for cooperating with the locked means is disposed on the lower surface of the cover wall,
When the lid main body is mounted on the inner plug, the locking means is positioned upstream of the locked means when viewed in a predetermined direction, and the lid main body is rotated in the predetermined direction with respect to the inner plug. And the locking means are locked to the locked means, and when the lid body is further rotated in the predetermined direction with respect to the inner plug, the deformation is caused via the locking means and the locked means. A force is applied to the area, the breakable thin line of the inner plug is broken and the deformed area is deformed, thereby creating a passage opening in the closure wall of the inner plug;
When viewed in the predetermined direction of the deformation region, at least the upstream portion is gradually inclined upward toward the upstream,
A container lid is provided.

上記他の技術的課題は、該中栓の該閉塞壁には該破断可能薄肉ラインが周方向に等間隔をおいて2個又は3個形成されていて、該変形領域が周方向に等間隔をおいて2個又は3個規定されており、
該被係止手段は該所定方向に見て該変形領域の上流端部から上方に延出し次いで半径方向内方に延びる被係止片から構成されており、
該係止手段の各々は該覆壁の下面から下方に延び次いで該所定方向に延びる係止片から構成されている、ことによって達成される。
Another technical problem is that two or three breakable thin lines are formed at equal intervals in the circumferential direction on the closing wall of the inner plug, and the deformation regions are equally spaced in the circumferential direction. 2 or 3 are specified,
The locked means is composed of a locked piece extending upward from the upstream end of the deformation region when viewed in the predetermined direction and then extending radially inward,
Each of the locking means is constituted by a locking piece extending downward from the lower surface of the covering wall and then extending in the predetermined direction.

好適には、該閉塞壁の中央主部は、該変形領域の少なくとも上流部及びその近傍を除いて、水平に延在し、該変形領域は該所定方向に見て下流端から上流に向かって該中央主部の水平に延びる部位に沿って水平に延び、次いで上流に向かって上流端まで上方に傾斜して延び、該閉塞壁の該中央主部には、該変形領域を規定する該破断可能薄肉ラインの該破断開始端部並びに該外側弧状部及び内側弧状部の上流部に隣接して、鉛直に延びる***面が形成されている。好ましくは、該被係止片の各々は該変形領域の上流端部から上方に鉛直に延出する支柱部及び該支柱部の上端部から半径方向内方に水平に延びる張出梁部から構成されている。該中栓の該閉塞壁には上面中心から上方に延出する共通支柱が配設されており、該被係止片の各々の該張出梁部の半径方向内側端は該共通支柱の上端部に接続されているのが好適である。該係止片の各々は該覆壁の下面から下方に延びる垂下柱部及び該垂下柱部の下端部から該所定方向に弧状に延びる突出部から構成されているのが好ましい。好適形態においては、該蓋本体の該覆壁には該変形領域に対応して2個又は3個の排出開口が形成されており、平面図において該突出部の各々は全体が該排出開口内に位置する。該中栓の該装着壁の外周面と該蓋本体の該嵌合壁の内周面との一方には、少なくとも1個の位置決め溝が形成され、他方には少なくとも1個の位置決め突起が形成されており、該位置決め溝内に該位置決め突起を進入せしめて該中栓に該蓋本体を装着することによって、該中栓に対する該蓋本体の相対的角度位置が規制されるのが好都合である。好ましくは、該中栓の該閉塞壁に形成されている該破断可能薄肉ラインの該外側弧状部及び該内側弧状部は上方から見て反時計方向に該破断開始端部から延在し、該所定方向は上方から見て反時計方向である。該中栓と該蓋本体とには、相互に協働して該中栓に対して該蓋本体が該所定方向に対して反対方向に回転するのを阻止する回転阻止手段が配設されているのが好適である。該中栓に対して該蓋本体が該所定方向に50乃至60度である角度α回転せしめられると、該係止手段が該被係止手段に係止せしめられ、
該中栓と該蓋本体とには、該中栓に対して該蓋本体が該角度αより0乃至20度小さい角度β(0度≦α−β≦20度)回転せしめられると、協働して該中栓に対して該蓋本体が該所定方向に対して反対方向に回転するのを阻止する戻り回転阻止手段が配設されているのが望ましい。該中栓と該蓋本体とには、協働して該中栓に対する該蓋本体の該所定方向への回転を300乃至320度である角度γに制限する回転制限手段が配設されているのが好適である。更に、該中栓と該蓋本体とには、該中栓に対して該蓋本体が該所定方向に該角度γ回転せしめられると、協働して該中栓に対して該蓋本体が該所定方向に対して反対方向に回転するのを阻止する逆転阻止手段が配設されているのが好ましい。
Preferably, the central main portion of the blocking wall extends horizontally except at least the upstream portion of the deformation region and the vicinity thereof, and the deformation region is viewed from the downstream end toward the upstream as viewed in the predetermined direction. The rupture that extends horizontally along the horizontally extending portion of the central main part and then extends upwardly to the upstream end toward the upstream, and the central main part of the blocking wall defines the deformation region A vertically extending raised surface is formed adjacent to the break start end of the possible thin line line and the upstream portion of the outer arc and the inner arc. Preferably, each of the locked pieces is composed of a column portion extending vertically upward from the upstream end portion of the deformation region and a protruding beam portion extending horizontally inward in the radial direction from the upper end portion of the column portion. Has been. A common column extending upward from the center of the upper surface is disposed on the closing wall of the inner plug, and the radially inner end of each projecting beam portion of the locked piece is the upper end of the common column. It is preferable to be connected to the section. Each of the locking pieces is preferably composed of a hanging column portion extending downward from the lower surface of the covering wall and a projecting portion extending in an arc shape from the lower end portion of the hanging column portion in the predetermined direction. In a preferred embodiment, the cover wall of the lid body is formed with two or three discharge openings corresponding to the deformation region, and in the plan view, each of the protrusions is entirely within the discharge opening. Located in. At least one positioning groove is formed on one of the outer peripheral surface of the mounting wall of the inner plug and the inner peripheral surface of the fitting wall of the lid body, and at least one positioning protrusion is formed on the other. It is advantageous that the relative angular position of the lid body with respect to the inner plug is regulated by inserting the positioning protrusion into the positioning groove and mounting the lid body on the inner plug. . Preferably, the outer arc-shaped portion and the inner arc-shaped portion of the breakable thin-walled line formed in the closing wall of the inner plug extend from the break starting end portion in a counterclockwise direction when viewed from above, The predetermined direction is counterclockwise when viewed from above. The inner stopper and the lid main body are provided with a rotation preventing means that cooperates with each other to prevent the lid main body from rotating in a direction opposite to the predetermined direction with respect to the inner stopper. It is preferable. When the lid body is rotated by an angle α of 50 to 60 degrees in the predetermined direction with respect to the inner plug, the locking means is locked to the locked means,
When the inner lid and the lid body are rotated relative to the inner stopper by an angle β (0 degree ≦ α−β ≦ 20 degrees) smaller than the angle α by 0 to 20 degrees, the lid body cooperates. Thus, it is desirable that return rotation preventing means for preventing the lid main body from rotating in the opposite direction to the predetermined direction is disposed with respect to the inner plug. The inner plug and the lid main body are provided with a rotation limiting means that cooperates to limit the rotation of the lid main body with respect to the inner plug in the predetermined direction to an angle γ of 300 to 320 degrees. Is preferred. Furthermore, when the lid body is rotated by the angle γ in the predetermined direction with respect to the inner plug, the lid body cooperates with the inner plug to the inner plug. It is preferable that reverse rotation prevention means for preventing rotation in a direction opposite to the predetermined direction is provided.

本発明の容器蓋においては、中栓の閉塞壁に指を当接せしめて衛生上の問題を生成せしめることなく、単に中栓に対して蓋本体を所定方向に回転せしめることによって中栓の閉塞壁に通過開口を生成することができることに加えて、中栓の通過開口は変形領域を(閉塞壁から分離することなく)変形せしめることによって生成され、従って所謂屑片が発生することはない。中栓の閉塞壁には破断可能薄肉ラインが周方向に等間隔をおいて2個又は3個形成されていて、変形領域が周方向に等間隔をおいて2個又は3個規定されており、被係止手段は所定方向に見て変形領域の上流端部から上方に延出し次いで半径方向内方に延びる被係止片から構成されており、係止手段の各々は覆壁の下面から下方に延び次いで所定方向に延びる係止片から構成されている場合、被係止片と係止片との相互係止は充分に強固であり、相互係止が毀損されてしまう虞は実質上皆無であり、破断可能ラインは充分確実に破断される。更に、変形領域の少なくとも上流部は所定方向に見て上流に向かって閉塞壁から漸次上方に***せしめられていることに起因して、変形領域の全体が水平にせしめられている場合に比べて、通過開口の開口面積を大きくせしめられ内容液の流出が容易であると共に、変形せしめられた変形領域が順次干渉乃至重なり合って変形領域の更なる変形進行が阻害されることを確実に防止することができる。   In the container lid of the present invention, the inner plug is closed by simply rotating the lid body in a predetermined direction with respect to the inner plug without causing a sanitary problem by bringing a finger into contact with the closing wall of the inner plug. In addition to being able to create a passage opening in the wall, the passage opening of the inner plug is created by deforming the deformation area (without separating it from the closure wall), so that so-called debris is not generated. Two or three breakable thin lines are formed at equal intervals in the circumferential direction on the closing wall of the inner plug, and two or three deformation areas are defined at equal intervals in the circumferential direction. The locked means is composed of locked pieces that extend upward from the upstream end of the deformation region when viewed in a predetermined direction and then extend radially inward, and each of the locking means is formed from the lower surface of the covering wall. When the locking piece extends downward and then extends in a predetermined direction, the interlocking between the locked piece and the locking piece is sufficiently strong, and there is substantially no risk of the mutual locking being damaged. There is nothing, and the breakable line is broken sufficiently reliably. Further, at least the upstream portion of the deformation region is bulged upward from the blocking wall toward the upstream when viewed in a predetermined direction, and compared to the case where the entire deformation region is horizontally leveled. Further, it is possible to increase the opening area of the passage opening to facilitate the outflow of the content liquid and to surely prevent the deformed deformation areas from interfering with each other or overlapping to prevent further deformation progress of the deformation areas. Can do.

本発明に従って構成された合成樹脂製容器蓋の好適実施形態における中栓の正面図。The front view of the inner stopper in the suitable embodiment of the synthetic resin container lid comprised according to this invention. 図1に示す中栓の平面図。The top view of the inner stopper shown in FIG. 図1に示す中栓の、図2に示す線A−Aに沿った断面図。Sectional drawing along line AA shown in FIG. 2 of the inner stopper shown in FIG. 図1に示す中栓の一部を示す斜面図。The slope view which shows a part of inner plug shown in FIG. 本発明に従って構成された合成樹脂製容器蓋の好適実施形態における蓋本体の平面図。The top view of the cover main body in suitable embodiment of the synthetic resin container lid comprised according to this invention. 図5に示す蓋本体の底面図。FIG. 6 is a bottom view of the lid body shown in FIG. 5. 図5に示す蓋本体の、図5に示す線B−Bに沿った断面図。Sectional drawing along line BB shown in FIG. 5 of the lid | cover main body shown in FIG. 図5に示す蓋本体の一部を示す斜面図。FIG. 6 is a perspective view showing a part of the lid main body shown in FIG. 5. 図1乃至図4に図示する中栓に図5乃至図8に図示する蓋本体を所要とおりに装着した状態を示す断面図。FIG. 9 is a cross-sectional view showing a state in which the lid main body shown in FIGS. 5 to 8 is attached to the inner plug shown in FIGS. 1 to 4 as required. 図9に図示する状態から、中栓に対して蓋本体を上方から見て反時計方向に所定角度回転せしめて、中栓の破断可能薄肉ラインを破断し変形領域を変形せしめて通過開口を生成した状態を示す断面図。From the state shown in FIG. 9, the lid body is rotated counterclockwise by a predetermined angle with respect to the inner plug as viewed from above, and the breakable thin wall line of the inner plug is broken to deform the deformation area to generate a passage opening. Sectional drawing which shows the state which carried out.

以下、本発明に従って構成された容器蓋の好適実施形態を図示している添付図面を参照して、更に詳細に説明する。   Hereinafter, a preferred embodiment of a container lid constructed according to the present invention will be described in more detail with reference to the accompanying drawings.

本発明に従って構成された合成樹脂製容器蓋は、図1乃至図4に示す中栓2と図5乃至図8に示す蓋本体4とから構成されている。中栓2はポリエチレン又はポリプロピレンの如き適宜の合成樹脂から射出成形することができ、同様に蓋本体4もポリエチレン又はポリプロピレンの如き適宜の合成樹脂から射出成形することができる。   A synthetic resin container lid constructed according to the present invention comprises an inner plug 2 shown in FIGS. 1 to 4 and a lid body 4 shown in FIGS. 5 to 8. The inner plug 2 can be injection-molded from an appropriate synthetic resin such as polyethylene or polypropylene. Similarly, the lid body 4 can also be injection-molded from an appropriate synthetic resin such as polyethylene or polypropylene.

図1乃至図4を参照して説明すると、中栓2は円形閉塞壁6及びこの閉塞壁6の外周縁に接続された略円筒形状である装着壁8を含んでいる。図示の実施形態における閉塞壁6は、後述する変形領域の少なくとも上流部及びその近傍を除いて水平に延在する中央主部10、この中央主部10の外周縁から実質上鉛直上方に延出するシール部12、及びこのシール部12の上端から半径方向外方に実質上水平に延出する環状外周縁部14を有する。   1 to 4, the inner plug 2 includes a circular blocking wall 6 and a mounting wall 8 having a substantially cylindrical shape connected to the outer peripheral edge of the blocking wall 6. The blocking wall 6 in the illustrated embodiment extends substantially vertically upward from the central main portion 10 extending horizontally except at least the upstream portion and the vicinity thereof in the deformation region described later, and the outer peripheral edge of the central main portion 10. And an annular outer peripheral edge portion 14 extending substantially horizontally outward from the upper end of the seal portion 12 in the radial direction.

上記閉塞壁6の中央主部10には、少なくとも1個、好ましくは周方向に等間隔をおいて2個又は3個、の破断可能薄肉ラインが形成されていて、少なくとも1個、好ましくは2個又は3個、の弧状変形領域が規定されており、変形領域の少なくとも上流部は所定方向に見て上流に向かって漸次上方に傾斜せしめられていることが重要である。図示の実施形態においては、閉塞壁6の中心点に関して点対称に2個の破断可能薄肉ライン16が形成され、2個の変形領域18が規定されている。図2乃至図4、特に図4を参照することによって明確に理解される如く、変形領域18の各々は、上記所定方向に見て下流端から上流に向けて、閉塞壁6の中央主部10の水平に延びる部位に沿って水平に延び、次いで上流に向かって上流端まで漸次上方に傾斜して延びている。変形領域18の各々を規定する破断可能薄肉ライン16は、半円形状である破断開始端部16aと共に、破断開始端部16aの半径方向外側端に続いて延在する外側弧状部16b及び破断開始端部16aの半径方向内側端に続いて延在する内側弧状部16cを有する。外側弧状部16bは略円弧状に延びており、内側弧状部16cは破断開始端部16aの半径方向内側端部から直線状に延び、次いで中央主部10の中央部を略円弧状に延び、全体として弧状をなしている。外側弧状部16cの下流端と内側弧状部16cの下流端とは相互に略半径方向に離隔されている。変形領域18の上流部が上流に向かって上流端まで漸次上方に傾斜して延びることに起因して、破断可能薄肉ライン16の各々の破断開始端部16a並びに外側弧状部16b及び内側弧状部16cの上流部に隣接して、閉塞壁6の中央主部10には、鉛直に延びる***面20が形成されている。図示の実施形態においては、変形領域18の上流部が上流に向かって上流端まで上方に向かって傾斜せしめられているが、所望ならば変形領域18の実質上全体を上流に向かって上方に傾斜せしめることもできる。   The central main portion 10 of the blocking wall 6 is formed with at least one, preferably two or three breakable thin lines at equal intervals in the circumferential direction, and at least one, preferably two. It is important that one or three arc-shaped deformation regions are defined, and at least the upstream portion of the deformation region is gradually inclined upward toward the upstream when viewed in a predetermined direction. In the illustrated embodiment, two breakable thin lines 16 are formed symmetrically with respect to the center point of the blocking wall 6, and two deformation regions 18 are defined. As can be clearly understood by referring to FIGS. 2 to 4, particularly FIG. 4, each of the deformation regions 18 is formed in the central main portion 10 of the blocking wall 6 from the downstream end to the upstream as viewed in the predetermined direction. It extends horizontally along the horizontally extending portion of the first, and then gradually inclines upward toward the upstream end toward the upstream. The breakable thin line 16 that defines each of the deformation regions 18 includes a semicircular break start end 16a, an outer arcuate portion 16b extending from the radially outer end of the break start end 16a, and a break start. An inner arcuate portion 16c extending following the radially inner end of the end portion 16a is provided. The outer arc-shaped portion 16b extends in a substantially arc shape, the inner arc-shaped portion 16c extends linearly from the radially inner end portion of the fracture start end portion 16a, and then extends in the substantially arc shape in the central portion of the central main portion 10. It is arcuate as a whole. The downstream end of the outer arc-shaped portion 16c and the downstream end of the inner arc-shaped portion 16c are separated from each other in a substantially radial direction. Due to the fact that the upstream portion of the deformation region 18 extends upwardly and gradually inclines upward toward the upstream end, the break start end portion 16a, the outer arc portion 16b, and the inner arc portion 16c of each of the breakable thin-walled lines 16 are obtained. A raised surface 20 extending vertically is formed in the central main portion 10 of the blocking wall 6 adjacent to the upstream portion. In the illustrated embodiment, the upstream portion of the deformation region 18 is inclined upward to the upstream end toward the upstream, but if desired, substantially the entire deformation region 18 is inclined upward toward the upstream. It can also be used.

上記変形領域18の各々には被係止手段22が配設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、被係止手段22の各々は、所定方向に見て変形領域18の上流端部から上方に延出し次いで半径方向内方に延びる被係止片から構成、更に詳しくは、変形領域18の上流端部上面から実質上鉛直に上方に延出する支柱部22aとこの支柱部22aの上端部から半径方向内方に実質上水平に延びる張出梁部22bとを有する被係止片から構成されている。閉塞壁6の上面中心には実質上鉛直に上方に延出する共通支柱24が配設されており、被係止手段22の各々の張出梁部22bの半径方向内側端は共通支柱24に接続されており、従って被係止手段22の各々の張出梁部22bの半径方向内側端は共通支柱24を介して相互に接続されている。所望ならば、共通支柱24を省略して2個の支柱部22aから延出する張出梁部22bを通接的に相互連結することもできる。しかしながら、開封の際の力の確実な伝達等の見地から共通支柱24を配設するのが好ましい。   It is important that each of the deformation areas 18 is provided with a locking means 22. In the illustrated embodiment, each of the locking means 22 has a deformation direction 18 as viewed in a predetermined direction. The strut portion 22a that extends upward from the upstream end portion and then extends radially inward, and more specifically, the strut portion 22a that extends substantially vertically upward from the upper surface of the upstream end portion of the deformation region 18 and the strut portion. It is comprised from the to-be-latched piece which has the overhang | projection beam part 22b extended substantially horizontally in the radial inside from the upper end part of the part 22a. A common support 24 that extends substantially vertically upward is disposed at the center of the upper surface of the blocking wall 6, and the radially inner end of each protruding beam portion 22 b of the locked means 22 is connected to the common support 24. Therefore, the radially inner ends of the projecting beam portions 22 b of the locked means 22 are connected to each other via a common column 24. If desired, the common beam 24 can be omitted and the overhanging beam portion 22b extending from the two column portions 22a can be interconnected. However, it is preferable to dispose the common strut 24 from the standpoint of reliable transmission of force at the time of opening.

上記装着壁8の外周面上端部には半径方向外方に張り出した環状係止突条26が形成されている。環状係止突条26の周方向所定部位には、図1及び図2に図示する如く、位置決め溝28が形成されている。装着壁8の内周面上部には上方を向いた環状肩面30が形成されている。そして、装着壁8の内周面における環状肩面30よりも下方で且つ上記閉塞壁6の環状外周縁部14の上面よりも上方の領域には、図2と共に図4を参照することによって明確に理解される如く、略直方体形状の1個の突起32と、この突起32から夫々周方向両側に所要距離だけ離隔して配置されたラチェット爪34及び36が形成されている。ラチェット爪34及び36の各々は、図2において反時計方向に向かって漸次半径方向内方に傾斜して延びる緩やかな傾斜面34a及び36aと反時計方向下流端に位置する切り立った係止面34b及び36bとを有する。係止面34b及び36bには時計方向に延びる切欠34c及び36cが形成されている。   An annular locking ridge 26 projecting outward in the radial direction is formed at the upper end of the outer peripheral surface of the mounting wall 8. As shown in FIGS. 1 and 2, a positioning groove 28 is formed at a predetermined circumferential position of the annular locking protrusion 26. An annular shoulder surface 30 facing upward is formed on the inner peripheral surface of the mounting wall 8. Then, a region below the annular shoulder surface 30 on the inner peripheral surface of the mounting wall 8 and above the upper surface of the annular outer peripheral edge portion 14 of the blocking wall 6 is clearly shown by referring to FIG. 4 together with FIG. As can be understood from the above, one protrusion 32 having a substantially rectangular parallelepiped shape and ratchet claws 34 and 36 are formed so as to be separated from the protrusion 32 on both sides in the circumferential direction by a required distance. Each of the ratchet pawls 34 and 36 has a gently inclined surface 34a and 36a extending gradually inward in the counterclockwise direction in FIG. 2 and a steep engaging surface 34b located at the downstream end in the counterclockwise direction. And 36b. Cutouts 34c and 36c extending in the clockwise direction are formed in the locking surfaces 34b and 36b.

装着壁8の内周面下端部には半径方向内方に突出する複数個の係止突条38が配設されている。かかる係止突条38は周方向に若干の間隔をおいて周方向に延在せしめられている。所望ならば、複数個の係止突条38を形成することに代えて、周方向に連続して延びる環状突条を形成することもできる。装着壁8の下半部の外径は上半部の外径よりも大きく、下半部の肉厚は上半部の肉厚よりも増大せしめられている。そして、装着壁8には、その下端から上方に肉厚増大部の上端近傍までも深さを有し且つ周方向に延びる環状空隙40が形成されている。かかる環状空隙40に関連せしめて装着壁8の下半部には環状空隙40から装着壁8の外周面まで延びる1個又は数個の切欠(図示していない)も形成されている。環状空隙40及びこの環状空隙40に関連して形成される切欠は、後述するとおりにして容器の口頸部に装着された中栓2を、容器の内容物を消費した後に所謂分別収集のために容器の口頸部から中栓2を充分容易に離脱せしめることを可能にするための周知の構成である(その詳細については、例えば特開平10−59400号公報及び特開2004−83092号公報を参照されたい)。   A plurality of locking ridges 38 projecting inward in the radial direction are disposed at the lower end portion of the inner peripheral surface of the mounting wall 8. The locking protrusions 38 are extended in the circumferential direction at a slight interval in the circumferential direction. If desired, instead of forming a plurality of locking ridges 38, annular ridges extending continuously in the circumferential direction can be formed. The outer diameter of the lower half part of the mounting wall 8 is larger than the outer diameter of the upper half part, and the thickness of the lower half part is made larger than the thickness of the upper half part. The mounting wall 8 is formed with an annular gap 40 extending from the lower end to the upper end and extending in the circumferential direction to the vicinity of the upper end of the thickened portion. One or several notches (not shown) extending from the annular gap 40 to the outer peripheral surface of the mounting wall 8 are also formed in the lower half of the mounting wall 8 in association with the annular gap 40. The annular gap 40 and the notch formed in relation to the annular gap 40 are used for so-called separate collection after the contents of the container are consumed after the inner plug 2 attached to the mouth and neck of the container is consumed as described later. It is a well-known configuration that makes it possible to easily and easily remove the inner stopper 2 from the mouth and neck of the container (for details, see, for example, JP-A-10-59400 and JP-A-2004-83092). See).

図5乃至図8を参照して説明を続けると、図示の実施形態における蓋本体4は、本体部42と共に外蓋43を備えている。本体部42は実質上水平に延在する円形覆壁44及びこの覆壁44の外周縁に接続された筒形嵌合壁46を含んでいる。覆壁44の中央部には、少なくとも1個、好ましくは上記中栓2に配設されている変形領域18に対応して2個又は3個、の排出開口48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、中栓2に配設されている2個の変形領域18に対応して2個の排出開口48が形成されている。覆壁44の中心点に関して点対称に位置する2個の排出開口48は変形領域18の形状に略合致した形状であり、図5において反時計方向に弧状に延在せしめられている。   When the description is continued with reference to FIGS. 5 to 8, the lid body 4 in the illustrated embodiment includes an outer lid 43 together with the body portion 42. The main body 42 includes a circular cover wall 44 extending substantially horizontally and a cylindrical fitting wall 46 connected to the outer peripheral edge of the cover wall 44. It is important that at least one, preferably two or three discharge openings 48 corresponding to the deformation region 18 provided in the inner plug 2 are formed in the central portion of the cover wall 44. It is. In the illustrated embodiment, two discharge openings 48 are formed corresponding to the two deformation regions 18 disposed in the inner plug 2. The two discharge openings 48 positioned symmetrically with respect to the center point of the covering wall 44 have a shape substantially matching the shape of the deformation region 18 and are extended in an arc shape in the counterclockwise direction in FIG.

覆壁44の上面には、上記排出開口48の半径方向外側にて上方に延出する略円筒形状の排出案内壁50が形成されている。この排出案内壁50の図5及び図7において右側に位置する部位は上方に向かって幾分右側に傾斜せしめられている。排出案内壁50の上端部は、上方に向かって半径方向外方に図7において略半円形状に延出せしめられている。覆壁44の上面には、更に、その外周縁部から上方に向かって半径方向外側に幾分傾斜して延びる環状係止突条52も形成されている。覆壁44の下面外周縁部には、下方に延出する円筒形状のシール片54が形成されている。このシール片54の内周面における周方向所定位置には、下方及び半径方向内方に突出する直方体形状である係止突起56が形成されている。後に更に言及する如く、この係止突起56は中栓2に配設されている上記突起32並びにラチェット爪34及び36と協働する。   A substantially cylindrical discharge guide wall 50 is formed on the upper surface of the cover wall 44 and extends upward outside the discharge opening 48 in the radial direction. The portion of the discharge guide wall 50 located on the right side in FIGS. 5 and 7 is slightly inclined to the right side upward. The upper end portion of the discharge guide wall 50 is extended in a substantially semicircular shape in FIG. On the upper surface of the cover wall 44, an annular locking ridge 52 is also formed that extends from the outer peripheral edge of the cover wall 44 to the upper side in a radially inclined manner. A cylindrical seal piece 54 extending downward is formed on the outer peripheral edge of the lower surface of the cover wall 44. Locking projections 56 having a rectangular parallelepiped shape projecting downward and radially inward are formed at predetermined positions in the circumferential direction on the inner circumferential surface of the seal piece 54. As will be described later, the locking projection 56 cooperates with the projection 32 and the ratchet pawls 34 and 36 disposed on the inner plug 2.

覆壁44の下面には係止手段58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、上記中栓2に形成されている2個の被係止手段22に対応して、覆壁44の下面には2個の係止手段58が形成されている。図8を参照することによって明確に理解されるとおり、係止手段58の各々は、覆壁44の下面から下方に延び次いで所定方向に延びる係止片から構成、更に詳しくは、上記排出開口48の間から下方に垂下する垂下柱部58aとかかる垂下柱部58aの下端から図5において反時計方向に弧状に延出する突出部58bとを有する係止片から構成されている。直径方向に対向して位置する2個の垂下柱部58aの各々の横断面形状は略台形である。平面図である図5において、突出部58bの各々の実質上全体は上記排出開口48内に位置するのが金型成形の面からみて、好都合である。   It is important that a locking means 58 is formed on the lower surface of the covering wall 44. In the illustrated embodiment, two locking means 58 are formed on the lower surface of the cover wall 44 corresponding to the two locked means 22 formed on the inner plug 2. As clearly understood by referring to FIG. 8, each of the locking means 58 is constituted by a locking piece extending downward from the lower surface of the cover wall 44 and then extending in a predetermined direction, and more specifically, the discharge opening 48. It is comprised from the latching piece which has the protrusion part 58b extended in an arc shape counterclockwise in FIG. 5 from the lower end of this hanging pillar part 58a and the lower end of this hanging pillar part 58a. The cross-sectional shape of each of the two drooping column portions 58a facing each other in the diameter direction is a substantially trapezoid. In FIG. 5, which is a plan view, it is advantageous from the viewpoint of molding that the substantially entire projections 58 b are located in the discharge opening 48.

実質上円筒形状でよい嵌合壁46は、覆壁44の外周縁から垂下せしめられている。嵌合壁46の内周面には周方向に間隔をおいて周方向に延在する複数個の係合突条62が形成されている。更に、嵌合壁46の内周面下端部における周方向所定位置には、略直方体形状である位置決め突起64が形成されている。後に更に言及する如く、この位置決め突起64は中栓2に形成されている上記位置決め溝28と協働する。所望ならば、上記中栓2の適宜の部位に位置決め突起を形成し、この位置決め突起と協働する位置決め溝を蓋本体4の適宜の部位に形成することもできる。嵌合壁46の外周面上部における特定角度位置には、円弧状に延在する没入部60が形成されている。   The fitting wall 46, which may be substantially cylindrical, is suspended from the outer peripheral edge of the cover wall 44. A plurality of engaging protrusions 62 extending in the circumferential direction are formed on the inner circumferential surface of the fitting wall 46 at intervals in the circumferential direction. Further, a positioning protrusion 64 having a substantially rectangular parallelepiped shape is formed at a predetermined position in the circumferential direction at the lower end portion of the inner peripheral surface of the fitting wall 46. As will be further described later, the positioning protrusion 64 cooperates with the positioning groove 28 formed in the inner plug 2. If desired, a positioning protrusion can be formed at an appropriate portion of the inner plug 2 and a positioning groove cooperating with the positioning protrusion can be formed at an appropriate portion of the lid body 4. An immersive portion 60 extending in an arc shape is formed at a specific angle position on the outer peripheral surface of the fitting wall 46.

図5乃至図7を参照して説明を続けると、上記外蓋43は円形天面壁66とこの天面壁66の周縁から垂下する円筒形スカート壁68とから構成されている。かような外蓋43は、スカート壁68の下端における周方向特定部位を上記本体部42の嵌合壁の周方向特定部位にヒンジ手段70を介して連結することによって、上記本体部42に旋回自在に連結されている。本体部42と外蓋43とから構成されている蓋本体6は図5乃至図7に実線で図示する状態で成形され、本体部42に対して外蓋43は図5乃至図7に実線で図示する開位置と図7に二点鎖線で示す閉位置との間を旋回動自在である。それ自体は周知の形態でよいヒンジ手段70は、本体部42の嵌合壁46に形成されている上記没入部60の直径方向反対側に位置している。天面壁66の内面には円筒形状のシール片72が形成されている。天面壁66の内面には、更に、図5及び図7にて右半部においてシール片72の半径方向外側を半円形状に延びる2条の凸状74も形成されている。スカート壁68の内周面下部には環状係止溝76が形成されている。また、スカート壁68の内周面には、図7にて右半部において軸線方向中間部を半円弧状に延びる2条の凸状78も形成されている。スカート壁68の外周面には、上記ヒンジ手段70に対して直径方向反対側に位置する弧状鍔80が形成されている。更に、スカート壁68の先端面即ち下端面には2個の比較的長い弧状突条82と2個の比較的短い弧状突条84が形成されている。外蓋43が図7に二点鎖線で示す閉位置にせしめられると、シール片72の外周面が本体部42における排出案内壁50の内周面に密接せしめられる。そしてまた、環状係止溝76が本体部42の環状係止突条52に係止せしめられ、かくして外蓋43が閉位置に解除自在に係止せしめられる。弧状突条82及び84は本体部42の覆壁44の上面周縁部に密接せしめられる。   Continuing the description with reference to FIGS. 5 to 7, the outer lid 43 includes a circular top wall 66 and a cylindrical skirt wall 68 depending from the periphery of the top wall 66. The outer lid 43 is pivoted to the main body 42 by connecting a circumferential specific portion at the lower end of the skirt wall 68 to a circumferential specific portion of the fitting wall of the main body 42 via a hinge means 70. It is connected freely. The lid body 6 composed of the main body portion 42 and the outer lid 43 is molded in a state illustrated by solid lines in FIGS. 5 to 7, and the outer lid 43 with respect to the main body portion 42 is solid lines in FIGS. 5 to 7. It can turn between the open position shown in the figure and the closed position shown by a two-dot chain line in FIG. The hinge means 70, which may be in a known form per se, is located on the diametrically opposite side of the recessed portion 60 formed in the fitting wall 46 of the main body portion 42. A cylindrical sealing piece 72 is formed on the inner surface of the top wall 66. Further, on the inner surface of the top wall 66, two convex portions 74 extending in a semicircular shape on the radially outer side of the seal piece 72 in the right half portion in FIGS. 5 and 7 are also formed. An annular locking groove 76 is formed in the lower part of the inner peripheral surface of the skirt wall 68. In addition, on the inner peripheral surface of the skirt wall 68, two protrusions 78 extending in a semicircular arc shape in the axial direction intermediate portion in the right half portion in FIG. 7 are also formed. On the outer peripheral surface of the skirt wall 68, an arc-shaped ridge 80 positioned on the diametrically opposite side with respect to the hinge means 70 is formed. Further, two relatively long arc-shaped ridges 82 and two relatively short arc-shaped ridges 84 are formed on the front end surface, that is, the lower end surface of the skirt wall 68. When the outer lid 43 is brought into the closed position indicated by a two-dot chain line in FIG. 7, the outer peripheral surface of the seal piece 72 is brought into close contact with the inner peripheral surface of the discharge guide wall 50 in the main body portion 42. Further, the annular locking groove 76 is locked to the annular locking protrusion 52 of the main body 42, and thus the outer lid 43 is locked to the closed position so as to be releasable. The arc-shaped ridges 82 and 84 are brought into close contact with the peripheral edge of the upper surface of the cover wall 44 of the main body 42.

上述したとおりの中栓2と蓋本体4は、図9に図示するとおりに組み合わされる。詳述すると、外蓋43が閉位置にせしめられている蓋本体4における本体部42を、中栓2に対して強制的に下降せしめて、本体部42の嵌合壁46を中栓2の装着壁8の外周面に嵌合せしめる。この際には、嵌合壁46の内周面下端部に形成されている位置決め突起64(図6)の周方向位置を装着壁8の外周面上端部に形成されている位置決め溝28(図1)の周方向位置に合致せしめて位置決め突起64を位置決め溝28内に進入せしめ、これによって中栓2に対する蓋本体4の相対的角度位置を規制する。図9に図示する状態まで中栓2に対して蓋本体4を下降せしめると、嵌合壁46の内周面に形成されている係合突条62が装着壁8の外周面に形成されている係止突条26に係止せしめられ、かくして中栓2に対して蓋本体4が回転自在に装着される。蓋本体4のシール片54は中栓2の装着壁8の内周面上端部に密接せしめられる。図2に二点鎖線で示す如く、中栓2に対して蓋本体4を所要とおりに装着した状態において、蓋本体4のシール片54の内周面に形成されている係止突起56は、中栓2の装着壁8の内周面に形成されている突起32に対して、図2において反時計方向下流側に隣接して位置する。突起32と係止突起56とは協働して回転阻止手段を構成し、中栓2に対して蓋本体4が図2において時計方向(図9において上方から見て時計方向)に回転するのを阻止する。蓋本体4における係止手段58の各々の突出部58bは、中栓2における被係止手段22の各々の張出梁部22bの下方で且つ図2において反時計方向上流側に幾分離間して位置する(図示の実施形態においては、成形型等の都合上、一対の張出梁部22bは完全に点対称ではなく若干ずらして配置され、これに対応して一対の突出部58bも完全に点対称ではなく若干ずらして配置されている)。   The inner plug 2 and the lid body 4 as described above are combined as shown in FIG. More specifically, the main body portion 42 in the lid main body 4 in which the outer lid 43 is in the closed position is forcibly lowered with respect to the inner plug 2, and the fitting wall 46 of the main body portion 42 is moved to the inner plug 2. It is fitted to the outer peripheral surface of the mounting wall 8. At this time, the positioning groove 64 (FIG. 6) is formed in the upper end portion of the outer peripheral surface of the mounting wall 8 with the circumferential position of the positioning protrusion 64 (FIG. 6) formed on the lower end portion of the inner peripheral surface of the fitting wall 46. The positioning protrusion 64 is made to enter the positioning groove 28 so as to coincide with the circumferential position of 1), thereby restricting the relative angular position of the lid body 4 with respect to the inner plug 2. When the lid body 4 is lowered with respect to the inner plug 2 to the state shown in FIG. 9, the engagement protrusion 62 formed on the inner peripheral surface of the fitting wall 46 is formed on the outer peripheral surface of the mounting wall 8. The lid main body 4 is rotatably attached to the inner plug 2 in this manner. The seal piece 54 of the lid body 4 is brought into close contact with the upper end portion of the inner peripheral surface of the mounting wall 8 of the inner plug 2. As shown by a two-dot chain line in FIG. 2, the locking projection 56 formed on the inner peripheral surface of the seal piece 54 of the lid main body 4 in a state where the lid main body 4 is attached to the inner plug 2 as required. The protrusion 32 formed on the inner peripheral surface of the mounting wall 8 of the inner plug 2 is positioned adjacent to the downstream in the counterclockwise direction in FIG. The protrusion 32 and the locking protrusion 56 cooperate to constitute a rotation preventing means, and the lid body 4 rotates clockwise in FIG. 2 (clockwise as viewed from above in FIG. 9) with respect to the inner plug 2. To prevent. The protruding portions 58b of the locking means 58 in the lid body 4 are separated from each other below the overhanging beam portions 22b of the locked means 22 in the inner plug 2 and upstream in the counterclockwise direction in FIG. (In the illustrated embodiment, the pair of projecting beam portions 22b are not completely point-symmetrical and are slightly shifted from each other for the convenience of the molding die and the like, and the pair of projecting portions 58b are also completely corresponding to this. Is not point-symmetrical but slightly shifted).

図9には、本発明に従って構成された容器蓋が適用される容器の口頸部86も二点鎖線で図示されている。適宜の合成樹脂或いはガラスから形成することができる容器の口頸部86は全体として円筒形状であり、その外周面には環状係止溝88が形成されている。図9に明確に図示する如く、容器の口頸部86を中栓2の装着壁8の内周面下半部とシール部12の外周面との間に受け入れることによって、容器の口頸部86に容器蓋が装着される。中栓2の装着壁8の内周面下端部に形成されている係止突条38は口頸部86の係止溝88に係止せしめられ、中栓2における閉塞壁6のシール部12外周面は口頸部86の内周面に密接せしめられる。   In FIG. 9, the mouth and neck portion 86 of the container to which the container lid constructed according to the present invention is applied is also shown by a two-dot chain line. The mouth-and-neck portion 86 of the container, which can be formed from an appropriate synthetic resin or glass, has a cylindrical shape as a whole, and an annular locking groove 88 is formed on the outer peripheral surface thereof. As clearly shown in FIG. 9, by receiving the mouth / neck portion 86 of the container between the lower half of the inner peripheral surface of the mounting wall 8 of the inner plug 2 and the outer peripheral surface of the seal portion 12, A container lid is attached to 86. The locking ridge 38 formed on the lower end portion of the inner peripheral surface of the mounting wall 8 of the inner plug 2 is locked in the locking groove 88 of the mouth and neck portion 86, and the sealing portion 12 of the blocking wall 6 in the inner plug 2. The outer peripheral surface is brought into close contact with the inner peripheral surface of the mouth and neck portion 86.

容器内に収容されている調味液の如き内容物を消費する際には、中栓2に対して蓋本体4を図9において上方から見て反時計方向(図2において反時計方向)に回転せしめる。中栓2に対して蓋本体4が所定角度α(図2)回転せしめられると、蓋本体4に配設されている2個の係止手段58の各々が、中栓2に配設されている2個の被係止手段22の各々に係止せしめられる。更に詳しくは、係止手段58の突出部58bが被係止手段22の張出梁部22bの下方に進入し、係止手段58の垂下柱部58aが被係止手段22の張出梁部22bに当接せしめられる。所定角度αは50乃至60度程度であるのが好都合である。中栓2に対して蓋本体4が所定角度αを超えて更に回転せしめられると、被係止手段22を介して破断可能薄肉ライン16の各々に応力が加えられ、破断可能薄肉ライン16がその破断開始端部16aから破断され始める。   When the contents such as seasoning liquid contained in the container are consumed, the lid body 4 is rotated counterclockwise (counterclockwise in FIG. 2) when viewed from above in FIG. Let me. When the lid body 4 is rotated by a predetermined angle α (FIG. 2) with respect to the inner plug 2, each of the two locking means 58 disposed on the lid body 4 is disposed on the inner plug 2. Each of the two locked means 22 is locked. More specifically, the protruding portion 58b of the locking means 58 enters below the protruding beam portion 22b of the locked means 22, and the suspended column portion 58a of the locking means 58 is the protruding beam portion of the locked means 22. 22b. The predetermined angle α is conveniently about 50 to 60 degrees. When the lid body 4 is further rotated beyond the predetermined angle α with respect to the inner plug 2, stress is applied to each of the breakable thin lines 16 via the locked means 22, and the breakable thin line 16 is It begins to break from the break starting end 16a.

図示の実施形態においては、図2に二点鎖線で示す如く、中栓2に対して蓋本体4が上記所定角度αよりも0乃至20度程度小さい角度β(0度≦α−β≦20度)だけ回転せしめられると、蓋本体4に配設されている係止突起56が中栓2に配設されているラチェット爪34を弾性的に乗り越え、中栓2に対して蓋本体4が図9において上方から見て時計方向(図2において時計方向)に回転することは係止突起56とラチェット爪34の切り立った係止面34bとの協働によって阻止される。従って、係止突起56とラチェット爪34とは協働して戻り回転阻止手段を構成する。   In the illustrated embodiment, as shown by a two-dot chain line in FIG. 2, the lid body 4 has an angle β (0 degree ≦ α−β ≦ 20) smaller than the predetermined angle α by 0 to 20 degrees with respect to the inner plug 2. When the cover projection 4 is rotated by a predetermined degree, the locking projection 56 disposed on the lid body 4 elastically climbs over the ratchet pawl 34 disposed on the inner plug 2, and the lid body 4 moves against the inner plug 2. 9, rotation in the clockwise direction when viewed from above (clockwise in FIG. 2) is prevented by the cooperation of the locking protrusion 56 and the locking surface 34b of the ratchet pawl 34 that stands up. Therefore, the locking projection 56 and the ratchet pawl 34 cooperate to constitute a return rotation preventing means.

上記所定角度αを超える蓋本体4の回転が進行するに従って、破断可能薄肉ライン16の破断が破断開始端部16aから外側弧状部16b及び内側弧状部16cに進行する。詳述すると、破断可能薄肉ライン16の破断は、破断開始端部16aの図2における反時計方向上流端で破断した後に破断開始端部16aの両側縁が上流端から下流端まで漸次破断せしめられ、次いで外側弧状部16b及び内側弧状部16cの各々がそれらの上流端から下流端へ漸次破断せしめられる。変形領域18の上流部は、上記所定方向上流に向かって上方に傾斜、換言すれば上記所定方向即ち破断進行方向下流に向かって漸次下方に傾斜せしめられている故に、破断可能薄肉ライン16の外側弧状部16b及び内側弧状部16cには軸線方向上方への引張力も加えられ、そしてまた変形領域18の既に変形された部位が干渉乃至重なり合うことが回避され、かくして破断可能薄肉ライン16の破断及び変形領域18の変形は充分容易に進行せしめられる。中栓2に対する蓋本体4の回転が角度γ(図2)まで進行すると、図2に二点鎖線で示す如く、蓋本体4に配設されている係止突起56が中栓2に配設されている突起32に当接し、中栓2に対して蓋本体4が更に反時計方向に回転することが阻止される。従って、係止突起56と突起32は協働して蓋本体4の回転を角度γに制限する回転制限手段を構成する。上記角度γは300乃至320度程度であるのが好都合である。中栓2に対して蓋本体4が上記角度γ回転せしめられると、図10に図示する如く、破断可能薄肉ライン16の各々は、夫々の外側弧状部16a及び内側弧状部16bの実質上下流端まで破断され、中栓2の閉塞壁6に配設されている変形領域20は破断可能薄肉ライン16の破断の進行に応じて上方及び半時計方向下流に向けて変形されてロール状に変形され、閉塞壁6には2個の通過開口90(図10)が生成される。変形領域18の上流部は上流に向かって上方に傾斜せしめられていた故に、変形領域18の全体が水平に延在せしめられている場合に比べて通過開口90の開口面積が大きくなる。破断可能薄肉ライン16の外側弧状部18aの下流端と内側弧状部18bの下流端とは離隔されており、両者間が破断されることはなく、変形領域20が閉塞壁6から離脱されることはない。   As the rotation of the lid main body 4 exceeding the predetermined angle α proceeds, the breakage of the breakable thin line 16 proceeds from the break start end portion 16a to the outer arc-shaped portion 16b and the inner arc-shaped portion 16c. Specifically, the break of the breakable thin line 16 is broken at the upstream end in the counterclockwise direction in FIG. 2 of the break start end portion 16a, and then both side edges of the break start end portion 16a are gradually broken from the upstream end to the downstream end. Then, each of the outer arc-shaped portion 16b and the inner arc-shaped portion 16c is gradually broken from the upstream end to the downstream end thereof. The upstream portion of the deformation region 18 is inclined upward toward the upstream in the predetermined direction, in other words, gradually inclined downward toward the downstream in the predetermined direction, that is, the breaking progress direction. The arcuate portion 16b and the inner arcuate portion 16c are also subjected to an axially upward pulling force, and also avoids the already deformed portions of the deformation region 18 from interfering or overlapping, thus breaking and deforming the breakable thin line 16. The deformation of the region 18 can proceed sufficiently easily. When the rotation of the lid body 4 with respect to the inner plug 2 proceeds to an angle γ (FIG. 2), as shown by a two-dot chain line in FIG. The lid main body 4 is prevented from further rotating counterclockwise with respect to the inner plug 2 by abutting against the protrusion 32 that is formed. Therefore, the locking projection 56 and the projection 32 cooperate to constitute a rotation limiting means for limiting the rotation of the lid body 4 to the angle γ. The angle γ is conveniently about 300 to 320 degrees. When the lid body 4 is rotated by the angle γ with respect to the inner plug 2, as shown in FIG. 10, each of the breakable thin-wall lines 16 is substantially at the downstream end of the respective outer arc-shaped portion 16 a and inner arc-shaped portion 16 b. The deformation region 20 disposed on the closing wall 6 of the inner plug 2 is deformed in a roll shape by being deformed upward and counterclockwise in accordance with the progress of the breakage of the breakable thin wall 16. In the closed wall 6, two passage openings 90 (FIG. 10) are generated. Since the upstream portion of the deformation area 18 is inclined upward toward the upstream, the opening area of the passage opening 90 becomes larger than when the entire deformation area 18 is extended horizontally. The downstream end of the outer arcuate portion 18a and the downstream end of the inner arcuate portion 18b of the breakable thin-wall line 16 are separated from each other, and the deformation region 20 is separated from the blocking wall 6 without being broken. There is no.

図示の実施形態においては、中栓2に対して蓋本体4が上記角度γまで回転せしめられる際には、蓋本体4に配設されている係止突起56が中栓2に配設されているラチェット爪36を弾性的に乗り越える。それ故に、中栓2に対する蓋本体4の時計方向への回転は、係止突起56とラチェット爪36の切り立った係止面36bとの協働によって阻止される。従って、係止突起56とラチェット爪36とは協働して逆転阻止手段を構成する。   In the illustrated embodiment, when the lid body 4 is rotated to the angle γ with respect to the inner plug 2, the locking projection 56 provided on the lid body 4 is provided on the inner plug 2. The ratchet pawl 36 that is present is overcome elastically. Therefore, the rotation of the lid body 4 in the clockwise direction with respect to the inner plug 2 is prevented by the cooperation of the locking projection 56 and the raised locking surface 36 b of the ratchet pawl 36. Accordingly, the locking projection 56 and the ratchet pawl 36 cooperate to constitute a reverse rotation preventing means.

上述したとおりにして中栓2の閉塞壁6に通過開口90が生成された後においては、蓋本体4の外蓋43を図10に二点鎖線で示す位置まで旋回せしめ、次いで容器を傾動せしめると、中栓2の閉塞壁6に生成された通過開口90及び蓋本体4に配設されている排出開口48を通して容器の内容物が流出され、蓋本体4の排出案内壁50に案内されて排出される。   After the passage opening 90 is generated in the closing wall 6 of the inner plug 2 as described above, the outer lid 43 of the lid body 4 is swung to the position indicated by the two-dot chain line in FIG. 10, and then the container is tilted. Then, the contents of the container flow out through the passage opening 90 generated in the closing wall 6 of the inner plug 2 and the discharge opening 48 disposed in the lid body 4 and are guided to the discharge guide wall 50 of the lid body 4. Discharged.

2:中栓
4:蓋本体
6:閉塞壁
8:装着壁
16:破断可能薄肉ライン
16a:破断可能薄肉ラインの破断開始端部
16b:破断可能薄肉ラインの外側弧状部
16c:破断可能薄肉ラインの内側弧状部
18:変形領域
20:***面
22:被係止手段
22a:被係止手段の支柱部
22b:被係止手段の張出梁部
32:係止突起
34:ラチェット爪
36:ラチェット爪
42:蓋本体の本体部
43:蓋本体の外蓋
44:覆壁
46:嵌合壁
48:排出開口
56:係止突起
58:係止手段
58a:垂下柱部
58b:突出部
86:容器の口頸部
90:通過開口
2: Inner plug 4: Lid main body 6: Closure wall 8: Mounting wall 16: Breakable thin line 16a: Break start end of breakable thin line 16b: Outer arcuate portion of breakable thin line 16c: Breakable thin line Inner arc-shaped portion 18: Deformation region 20: Raised surface 22: Locked means 22a: Strut portion of locked means 22b: Overhanging beam portion of locked means 32: Locking protrusion 34: Ratchet claw 36: Ratchet claw 42: Main part of the lid main body 43: Outer lid of the lid main body 44: Covering wall 46: Fitting wall 48: Discharge opening 56: Locking protrusion 58: Locking means 58a: Drooping column part 58b: Protruding part 86: Container Neck 90: Passing opening

Claims (13)

容器の口頸部に装着される合成樹脂製中栓と該中栓に装着される合成樹脂製蓋本体とから構成され、
該中栓は円形閉塞壁及び該閉塞壁の外周縁に接続された筒形装着壁を含み、該装着壁を容器の口頸部の外周面に嵌合せしめることによって容器の口頸部に装着され、該閉塞壁が容器の口頸部を閉塞し、
該蓋本体は円形覆壁及び該覆壁の外周縁に接続された筒形嵌合壁を含み、該嵌合壁を該中栓の該装着壁の外周面に嵌合することによって該中栓に回転自在に装着され、該覆壁が該中栓の該閉塞壁の上方に位置し、
該中栓の該閉塞壁には少なくとも1個の破断可能薄肉ラインが形成されており、該破断可能薄肉ラインは破断開始端部から延びる外側弧状部と該破断開始端部から延びる内側弧状部とを有し、該外側弧状部と該内側弧状部との間に弧状変形領域が規定されており、
該変形領域には被係止手段が付設されており、
該蓋本体の該覆壁には少なくとも1個の排出開口が形成されており、該覆壁の下面には該被係止手段と協働する係止手段が配設されており、
該中栓に該蓋本体を装着した状態において該係止手段は所定方向に見て該被係止手段の上流側に位置し、該中栓に対して該蓋本体を該所定方向に回転せしめると該係止手段が該被係止手段に係止せしめられ、該中栓に対して該蓋本体を該所定方向に更に回転せしめると該係止手段及び該被係止手段を介して該変形領域に力が加えられ、該中栓の該破断可能薄肉ラインが破断されると共に該変形領域が変形され、これによって該中栓の該閉塞壁に通過開口が生成され、
該変形領域の該所定方向に見て少なくとも上流部は上流に向かって漸次上方に傾斜せしめられている、
ことを特徴とする容器蓋。
It is composed of a synthetic resin inner stopper attached to the mouth and neck of the container and a synthetic resin lid body attached to the inner stopper,
The inner plug includes a circular blocking wall and a cylindrical mounting wall connected to the outer peripheral edge of the blocking wall, and is fitted to the mouth and neck of the container by fitting the mounting wall to the outer peripheral surface of the mouth and neck of the container The occlusion wall occludes the mouth and neck of the container;
The lid body includes a circular covering wall and a cylindrical fitting wall connected to the outer peripheral edge of the covering wall, and the inner plug is fitted to the outer peripheral surface of the mounting wall of the inner plug. The cover wall is located above the blocking wall of the inner plug,
At least one breakable thin line is formed on the closing wall of the inner plug, and the breakable thin line includes an outer arcuate portion extending from the break start end and an inner arcuate portion extending from the break start end. An arcuate deformation region is defined between the outer arcuate part and the inner arcuate part,
Locked means are attached to the deformation region,
At least one discharge opening is formed in the cover wall of the lid body, and locking means for cooperating with the locked means is disposed on the lower surface of the cover wall,
When the lid main body is mounted on the inner plug, the locking means is positioned upstream of the locked means when viewed in a predetermined direction, and the lid main body is rotated in the predetermined direction with respect to the inner plug. And the locking means are locked to the locked means, and when the lid body is further rotated in the predetermined direction with respect to the inner plug, the deformation is caused via the locking means and the locked means. A force is applied to the area, the breakable thin line of the inner plug is broken and the deformed area is deformed, thereby creating a passage opening in the closure wall of the inner plug;
When viewed in the predetermined direction of the deformation region, at least the upstream portion is gradually inclined upward toward the upstream,
A container lid characterized by that.
該閉塞壁の中央主部は、該変形領域の少なくとも上流部及びその近傍を除いて、水平に延在し、該変形領域は該所定方向に見て下流端から上流に向かって該中央主部の水平に延びる部位に沿って水平に延び、次いで上流に向かって上流端まで上方に傾斜して延び、
該閉塞壁の該中央主部には、該変形領域を規定する該破断可能薄肉ラインの該破断開始端部並びに該外側弧状部及び内側弧状部の上流部に隣接して、鉛直に延びる***面が形成されている、請求項1記載の容器蓋。
The central main portion of the blocking wall extends horizontally except at least the upstream portion of the deformation region and the vicinity thereof, and the deformation region is the central main portion from the downstream end toward the upstream as viewed in the predetermined direction. Extending horizontally along the horizontally extending portion of the plate, and then inclined upward to the upstream end toward the upstream,
The central main portion of the closed wall has a vertically extending raised surface adjacent to the break starting end of the breakable thin line defining the deformation region and the upstream portion of the outer arc portion and the inner arc portion. The container lid according to claim 1, wherein:
該中栓の該閉塞壁には該破断可能薄肉ラインが周方向に等間隔をおいて2個又は3個形成されていて、該変形領域が周方向に等間隔をおいて2個又は3個規定されており、
該被係止手段は該所定方向に見て該変形領域の上流端部から上方に延出し次いで半径方向内方に延びる被係止片から構成されており、
該係止手段の各々は該覆壁の下面から下方に延び次いで該所定方向に延びる係止片から構成されている、請求項1又は2記載の容器蓋。
Two or three breakable thin lines are formed at equal intervals in the circumferential direction on the closing wall of the inner plug, and two or three deformation regions are spaced at equal intervals in the circumferential direction. Is defined,
The locked means is composed of a locked piece extending upward from the upstream end of the deformation region when viewed in the predetermined direction and then extending radially inward,
The container lid according to claim 1, wherein each of the locking means includes a locking piece that extends downward from the lower surface of the covering wall and then extends in the predetermined direction.
該被係止片の各々は該変形領域の上流端部から上方に鉛直に延出する支柱部及び該支柱部の上端部から半径方向内方に水平に延びる張出梁部から構成されている、請求項3記載の容器蓋。   Each of the latched pieces is composed of a column portion extending vertically upward from the upstream end portion of the deformation region and a protruding beam portion extending horizontally inward in the radial direction from the upper end portion of the column portion. The container lid according to claim 3. 該中栓の該閉塞壁には上面中心から上方に延出する共通支柱が配設されており、該被係止片の各々の該張出梁部の半径方向内側端は該共通支柱の上端部に接続されている、請求項4記載の容器蓋。   A common column extending upward from the center of the upper surface is disposed on the closing wall of the inner plug, and the radially inner end of each projecting beam portion of the locked piece is the upper end of the common column. The container lid according to claim 4, which is connected to the portion. 該係止片の各々は該覆壁の下面から下方に延びる垂下柱部及び該垂下柱部の下端部から該所定方向に弧状に延びる突出部から構成されている、請求項3から5までのいずれかに記載の容器蓋。   Each of the said locking piece is comprised from the protrusion part extended in an arc shape from the lower end part of the said drooping pillar part to the said predetermined direction, and the downward extending from the lower surface of this covering wall. The container lid in any one. 該蓋本体の該覆壁には該変形領域に対応して2個又は3個の排出開口が形成されており、平面図において該突出部の各々は全体が該排出開口内に位置する、請求項6記載の容器蓋。   The cover wall of the lid body has two or three discharge openings corresponding to the deformation region, and each of the protrusions is located in the discharge opening in a plan view. Item 7. The container lid according to Item 6. 該中栓の該装着壁の外周面と該蓋本体の該嵌合壁の内周面との一方には、少なくとも1個の位置決め溝が形成され、他方には少なくとも1個の位置決め突起が形成されており、該位置決め溝内に該位置決め突起を進入せしめて該中栓に該蓋本体を装着することによって、該中栓に対する該蓋本体の相対的角度位置が規制される、請求項1から7までのいずれかに記載の容器蓋。   At least one positioning groove is formed on one of the outer peripheral surface of the mounting wall of the inner plug and the inner peripheral surface of the fitting wall of the lid body, and at least one positioning protrusion is formed on the other. The relative angular position of the lid body with respect to the inner plug is regulated by inserting the positioning protrusion into the positioning groove and mounting the lid body on the inner plug. The container lid according to any one of 7 to 7. 該中栓の該閉塞壁に形成されている該破断可能薄肉ラインの該外側弧状部及び該内側弧状部は上方から見て反時計方向に該破断開始端部から延在し、該所定方向は上方から見て反時計方向である、請求項1から8までのいずれかに記載の容器蓋。   The outer arc-shaped portion and the inner arc-shaped portion of the breakable thin line formed on the closing wall of the inner plug extend from the break starting end portion in a counterclockwise direction when viewed from above, and the predetermined direction is The container lid according to any one of claims 1 to 8, which is counterclockwise when viewed from above. 該中栓と該蓋本体とには、相互に協働して該中栓に対して該蓋本体が該所定方向に対して反対方向に回転するのを阻止する回転阻止手段が配設されている、請求項1から9までのいずれかに記載の容器蓋。   The inner stopper and the lid main body are provided with a rotation preventing means that cooperates with each other to prevent the lid main body from rotating in a direction opposite to the predetermined direction with respect to the inner stopper. The container lid according to any one of claims 1 to 9. 該中栓に対して該蓋本体が該所定方向に50乃至60度である角度α回転せしめられると、該係止手段が該被係止手段に係止せしめられ、
該中栓と該蓋本体とには、該中栓に対して該蓋本体が該角度αより0乃至20度小さい角度β(0度≦α−β≦20度)回転せしめられると、協働して該中栓に対して該蓋本体が該所定方向に対して反対方向に回転するのを阻止する戻り回転阻止手段が配設されている、請求項1から10までのいずれかに記載の容器蓋。
When the lid body is rotated by an angle α of 50 to 60 degrees in the predetermined direction with respect to the inner plug, the locking means is locked to the locked means,
When the inner lid and the lid body are rotated relative to the inner stopper by an angle β (0 degree ≦ α−β ≦ 20 degrees) smaller than the angle α by 0 to 20 degrees, the lid body cooperates. The return rotation prevention means for preventing the lid body from rotating in the direction opposite to the predetermined direction with respect to the inner plug is provided. Container lid.
該中栓と該蓋本体とには、協働して該中栓に対する該蓋本体の該所定方向への回転を300乃至320度である角度γに制限する回転制限手段が配設されている、請求項1から11までのいずれかに記載の容器蓋。   The inner plug and the lid main body are provided with a rotation limiting means that cooperates to limit the rotation of the lid main body with respect to the inner plug in the predetermined direction to an angle γ of 300 to 320 degrees. The container lid according to any one of claims 1 to 11. 該中栓と該蓋本体とには、該中栓に対して該蓋本体が該所定方向に該角度γ回転せしめられると、協働して該中栓に対して該蓋本体が該所定方向に対して反対方向に回転するのを阻止する逆転阻止手段が配設されている、請求項12記載の容器蓋。   When the lid body is rotated by the angle γ in the predetermined direction relative to the inner plug, the lid body cooperates with the inner plug in the predetermined direction. The container lid according to claim 12, further comprising a reverse rotation preventing means for preventing rotation in the opposite direction with respect to the container.
JP2013069608A 2013-02-28 2013-03-28 Container lid composed of inner stopper and lid body Active JP6074302B2 (en)

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US14/763,313 US10343826B2 (en) 2013-02-28 2014-02-13 Container lid composed of inside plug and lid body
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JP5625698B2 (en) * 2010-09-30 2014-11-19 凸版印刷株式会社 Container caps and containers

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