JP5762089B2

JP5762089B2 - Container lid

Info

Publication number: JP5762089B2
Application number: JP2011078740A
Authority: JP
Inventors: 麻実子杉; 山崎　恭典; 恭典山崎
Original assignee: Nippon Closures Co Ltd
Current assignee: Nippon Closures Co Ltd
Priority date: 2011-03-31
Filing date: 2011-03-31
Publication date: 2015-08-12
Anticipated expiration: 2031-03-31
Also published as: JP2012210973A

Description

本発明は、容器に固着される中栓及びこの中栓に装着される外蓋を具備する容器蓋に関する。 The present invention relates to a container lid provided with an inner stopper fixed to a container and an outer lid attached to the inner stopper.

醤油、食用油及びドレッシングの如き液体調味料のための容器蓋として、容器の口頸部に固着される中栓及びこの中栓に装着される外蓋を具備する容器蓋が広く実用に供されている。中栓は略水平に延在する閉塞壁とこの閉塞壁の上面周縁部から上方に延出する円筒形装着壁とを有する。閉塞壁には破断可能薄肉ラインによって囲繞された除去領域が規定されており、装着壁の外周面には雄螺条が形成されている。外蓋は天面壁とこの天面壁から垂下する円筒形被装着壁とを有する。被装着壁の内周面には雌螺条が形成されている。中栓に外蓋が装着されると、中栓の雌螺条が外蓋の雄螺条に螺合せしめられる。 As container lids for liquid seasonings such as soy sauce, edible oil, and dressings, a container lid having an inner stopper fixed to the mouth and neck of the container and an outer lid attached to the inner stopper is widely used in practical use. ing. The inner plug has a blocking wall extending substantially horizontally and a cylindrical mounting wall extending upward from the peripheral edge of the upper surface of the blocking wall. A removal region surrounded by a breakable thin line is defined on the closing wall, and a male thread is formed on the outer peripheral surface of the mounting wall. The outer lid has a top wall and a cylindrical mounting wall depending from the top wall. Female threads are formed on the inner peripheral surface of the mounting wall. When the outer lid is attached to the inner plug, the female thread of the inner plug is screwed into the male thread of the outer lid.

上記形態の容器蓋の典型例においては、中栓の除去領域の上面には上方に延びる連結柱を介して引張リングが付設されている。容器の内容物を消費する際には、外蓋を開方向に回転せしめて外蓋の雌螺条と中栓の雄螺条との螺合を解除して中栓から外蓋を離脱し、引張リングを露呈せしめる。次いで、引張リングを引っ張って破断可能薄肉ラインを破断して除去領域を除去し、閉塞壁に排出口を生成する。かような形態の典型例においては、中栓から外蓋を離脱せしめた後に引張リングを引っ張って破断可能ラインを破断して除去領域を除去する操作が必要であり、使用勝手が必ずしも良好でない。 In the typical example of the container lid of the said form, the tension | pulling ring is attached to the upper surface of the removal area | region of the inside stopper through the connection pillar extended upwards. When consuming the contents of the container, rotate the outer lid in the opening direction to release the engagement between the female screw of the outer lid and the male screw of the inner plug, and then remove the outer lid from the inner plug. Expose the tension ring. The pull ring is then pulled to break the breakable thin line to remove the removal region and create an outlet in the closed wall. In a typical example of such a configuration, after the outer lid is detached from the inner plug, an operation of pulling the pulling ring to break the breakable line and removing the removal region is necessary, and the usability is not always good.

上記典型例における上述したとおりの問題を解決するために、下記特許文献１乃至４には、中栓に装着されている外蓋を中栓から離脱するために外蓋を開方向に回転せしめると、外蓋から中栓の除去領域に力が伝達されて破断可能薄肉ラインが破断されるように構成した容器蓋が開示されている。 In order to solve the problem as described above in the above typical example, in Patent Documents 1 to 4 below, when the outer lid is rotated in the opening direction in order to remove the outer lid attached to the inner plug from the inner plug. A container lid is disclosed that is configured such that a force is transmitted from the outer lid to the inner plug removal region to break the breakable thin line.

昭和５２年実用新案登録願第４６０２９号の明細書及び図面Specification and drawings of utility model registration application No. 46029 in 1977 特開２００５−２８９３８９号公報JP 2005-289389 A 特開２００７−２３８１４０号公報JP 2007-238140 A 特開２００８−３０８２１８号公報JP 2008-308218 A

而して、中栓から外蓋を離脱せしめるために外蓋を開方向に回転せしめると破断可能薄肉ラインが破断されるように構成した容器蓋においては、（１）外蓋に過大な回転トルクを加える必要なくして破断可能薄肉ラインを充分容易に破断することができる、（２）破断可能薄肉ラインを破断することによって除去された除去領域は外蓋と共に中栓から離脱され、従って外蓋を除去した後に除去領域を指で摘んで排除する必要がない、（３）破断可能薄肉ラインによって規定されている除去領域の形状、従って除去領域を除去することによって形成される排出口の形状は、内容物の円滑な排出のために円形状ではなくて略楕円形状の如き細長形状である、（４）溶着等の煩雑な製作工程を必要とすることなく充分安価に製作することができる、（５）中栓に外蓋を所要とおりに装着する際に中栓に配設されている破断可能薄肉ラインが破断されてしまうことがない、という要件を充足することが望まれる。しかしながら、上記特許文献１乃至４に開示されている容器蓋は、いずれも上記５個の要件の全てを充足することができない。上記特許文献１に開示されている容器蓋は上記要件１、２及び５を充足することができず、上記特許文献２に開示されている容器蓋は上記要件４及び５の要件を充足することができず、上記特許文献３に開示されている容器蓋は上記要件１及び３の要件を充足することができず、上記特許文献４に開示されている容器蓋は上記要件３及び５を充足することができない。 Thus, in a container lid configured such that the breakable thin line is broken when the outer lid is rotated in the opening direction to detach the outer lid from the inner stopper, (1) excessive rotational torque on the outer lid. (2) The removal region removed by breaking the breakable thin line is detached from the inner plug together with the outer lid, and thus the outer lid is removed. It is not necessary to remove the removal area with a finger after removal, (3) The shape of the removal area defined by the breakable thin line, and thus the shape of the discharge port formed by removing the removal area, (4) It can be manufactured at a sufficiently low cost without requiring a complicated manufacturing process such as welding, which is not a circular shape but an elongated shape such as a substantially elliptical shape for smooth discharge of contents. 5) breakable thin line disposed on the inside plug when attaching the outer lid to the required as the inside plug is not entirely broken, it is desired to satisfy the requirement that. However, none of the container lids disclosed in Patent Documents 1 to 4 can satisfy all the above five requirements. The container lid disclosed in Patent Document 1 cannot satisfy the requirements 1, 2 and 5, and the container lid disclosed in Patent Document 2 satisfies the requirements 4 and 5. The container lid disclosed in Patent Document 3 cannot satisfy the requirements 1 and 3, and the container lid disclosed in Patent Document 4 satisfies the requirements 3 and 5. Can not do it.

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、上記要件１乃至５の全てを充足する、容器に固着される中栓及びこの中栓に装着される外蓋を具備する形態の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 its main technical problem is to satisfy the above-mentioned requirements 1 to 5 with an inner stopper fixed to a container and an outer lid attached to the inner stopper. It is to provide a new and improved container lid of the form it comprises.

本発明によれば、上記主たる技術的課題を解決する容器蓋として、容器の口頸部に固着される中栓、及び該中栓に装着される外蓋を具備する容器蓋にして、
該中栓は閉塞壁と該閉塞壁の上面周縁部から上方に延出する円筒形装着壁とを有し、該閉塞壁には破断可能薄肉ラインによって囲繞された細長形状の除去領域が規定されており、該除去領域には該破断可能薄肉ラインに内接した下端縁から上方に突出する係止壁が配設されており、該装着壁の外周面には雄螺条が形成されており、
該外蓋は天面壁と該天面壁から垂下する円筒形被装着壁とを有し、該天面壁の下面における該被装着壁よりも内側の領域には下方に突出する係止突起が形成されており、該被装着壁の内周面には該雄螺条と協働する雌螺条が形成されており、
該係止壁には被係合手段が配設され該係止突起には係合手段が配設されており、該中栓に対して該外蓋が開方向に回転せしめられると該係合手段及び該被係合手段によって、該係止突起に対して該係止壁が中心軸線方向に移動するのを防止すると共に該係止突起が該係止壁に対して閉方向に相対的に回転するのを防止し、
該係止突起は一対の内側係止突起を含み、該内側係止突起の一方は該除去領域の長手方向片側において該係止壁の、該開方向に見て下流側に位置する内面に対向して位置せしめられ、該一対の内側係止突起の他方は該除去領域の長手方向他側において該係止壁の、該開方向に見て下流側に位置する内面に対向して位置せしめられており、
該被係合手段は一対の係止片を含み、該係止片の一方は該除去領域の長手方向片側において該係止壁の内面に形成され、該係止片の他方は該除去領域の長手方向他側において該係止壁の内面に形成されており、該中栓に対して該外蓋が該開方向に回転せしめられると該内側係止突起が該係止片に係止せしめられ、これによって該内側係止突起が該係止壁に対して閉方向に相対的に回転するのを防止する、
ことを特徴とする容器蓋が提供される。 According to the present invention, as a container lid for solving the main technical problem, a container lid comprising an inner stopper fixed to the mouth and neck of the container, and an outer lid attached to the inner stopper,
The inner plug has a blocking wall and a cylindrical mounting wall extending upward from the peripheral edge of the upper surface of the blocking wall, and the blocking wall defines an elongated removal region surrounded by a breakable thin line. The removal region is provided with a locking wall protruding upward from a lower end edge inscribed in the breakable thin line, and a male thread is formed on the outer peripheral surface of the mounting wall. ,
Outer lid and a cylindrical mating attachment wall depending from the top panel wall and a top panel wall, the locking projection is formed that protrudes downward in a region inside the該被mounting wall at the lower surface of the top wall A female thread that cooperates with the male thread is formed on the inner peripheral surface of the mounted wall,
Engagement means is provided on the locking wall, and engagement means is provided on the locking projection. When the outer lid is rotated in the opening direction with respect to the inner plug, the engagement means is provided. Means and the engaged means prevent the locking wall from moving in the direction of the central axis relative to the locking protrusion, and the locking protrusion is relatively close to the locking wall in the closing direction. and prevented from rotating,
The locking protrusion includes a pair of inner locking protrusions, and one of the inner locking protrusions is opposed to an inner surface located on the downstream side of the locking wall in the opening direction on one side in the longitudinal direction of the removal region. The other of the pair of inner locking projections is positioned opposite the inner surface of the locking wall on the downstream side when viewed in the opening direction on the other side in the longitudinal direction of the removal region. And
The engaged means includes a pair of locking pieces, one of the locking pieces being formed on the inner surface of the locking wall on one longitudinal side of the removal region, and the other of the locking pieces being the removal region. It is formed on the inner surface of the locking wall on the other side in the longitudinal direction. When the outer lid is rotated in the opening direction with respect to the inner plug, the inner locking projection is locked to the locking piece. This prevents the inner locking projection from rotating relative to the locking wall in the closing direction.
Container lid is provided, characterized in that.

好ましくは、該係止突起は一対の外側係止突起を含み、該一対の外側係止突起の一方は該除去領域の長手方向片側において該係止壁の、該開方向に見て上流側に位置する外面に対向して位置せしめられ、該一対の外側係止突起の他方は該除去領域の長手方向他側において該係止壁の、該開方向に見て上流側に位置する外面に対向して位置せしめられており、該被係合手段は該除去領域の長手方向片側及び他側において該係止壁の、該開方向に見て上流側に位置する外面に形成された溝或いは突条を含み、該係合手段は該外側係止突起の、該係止壁の該溝或いは該突条に対向する表面に形成されている突条或いは溝を含み、該外蓋が該開方向に回転せしめられると該外側係止突起の該突条或いは該溝が該係止壁の該溝或いは該突条に係合し、これによって該外側係止突起に対して該係止壁が中心軸線方向に移動するのを防止する。該除去領域は該破断可能薄肉ラインの外側領域よりも上方に変位せしめられているのが好都合である。 Preferably, the locking protrusion includes a pair of outer locking protrusions, and one of the pair of outer locking protrusions is on the upstream side of the locking wall on one side in the longitudinal direction of the removal region when viewed in the opening direction. The other of the pair of outer locking projections is opposed to the outer surface located upstream of the locking wall in the opening direction on the other side in the longitudinal direction of the removal region. The engaging means is a groove or protrusion formed on the outer surface of the locking wall on the upstream side when viewed in the opening direction on one side and the other side in the longitudinal direction of the removal region. And the engaging means includes a protrusion or groove formed on a surface of the outer locking protrusion facing the groove or the protrusion of the locking wall, and the outer lid is in the opening direction. The protrusions or grooves of the outer locking protrusions engage with the grooves or protrusions of the locking wall. Engaging Tomekabe is prevented from moving to the center axis direction relative to the outer locking projection by. The removal region is advantageously displaced above the outer region of the breakable thin line.

本発明の容器蓋においては、中栓から外蓋を離脱せしめるために外蓋を開方向に回転せしめると、外蓋の係止突起が中栓の係止壁に係止して外蓋から破断可能薄肉ラインに力が伝達され、これによって破断可能ラインが充分容易に破断されて細長形状の排出口が生成される。外蓋が開方向に回転せしめられると、外蓋の係止突起に配設されている係合手段と中栓の係止壁に配設されている被係合手段とが協働して、係止突起に対して係止壁が中心軸線方向に移動するのを防止すると共に該係止突起が該係止壁に対して閉方向に相対的に回転するのを防止し、従って破断可能薄肉ラインの破断によって除去された除去領域は外蓋から離脱されることなく外蓋に付随して中栓から離脱される。加えて、本発明の容器蓋は、溶着の如き煩雑な工程を遂行することなく充分安価に製作することができる。中栓に外蓋を所要とおりに装着する際に中栓の破断可能薄肉ラインに力が伝達されることはなく、破断可能薄肉ラインが破断されることはない。 In the container lid of the present invention, when the outer lid is rotated in the opening direction in order to remove the outer lid from the inner stopper, the locking projection of the outer lid is locked to the locking wall of the inner stopper and is broken from the outer lid. A force is transmitted to the possible thin line, which breaks the breakable line sufficiently easily to produce an elongated outlet. When the outer lid is rotated in the opening direction, the engaging means disposed on the locking projection of the outer lid and the engaged means disposed on the locking wall of the inner plug cooperate with each other. The locking wall is prevented from moving in the direction of the central axis with respect to the locking projection, and the locking projection is prevented from rotating relative to the locking wall in the closing direction. The removal area removed by the break of the line is detached from the inner plug along with the outer lid without being removed from the outer lid. In addition, the container lid of the present invention can be manufactured at a sufficiently low cost without performing a complicated process such as welding. When the outer lid is attached to the inner plug as required, no force is transmitted to the breakable thin line of the inner plug, and the breakable thin line is not broken.

本発明に従って構成された容器蓋の好適実施形態を、一部を断面で示す正面図。The front view which shows a suitable embodiment of the container lid comprised according to this invention in part in a cross section. 図１の容器蓋における中栓の斜面図。The slope view of the inner stopper in the container lid of FIG. 図１の容器蓋における中栓の正面図。The front view of the inner stopper in the container lid of FIG. 図１の容器蓋における中栓の断面図。Sectional drawing of the inner stopper in the container lid of FIG. 図１の容器蓋における中栓の平面図。The top view of the inner stopper in the container lid of FIG. 図１の容器蓋における外蓋を倒立状態で示す斜面図。The slope view which shows the outer lid in the container lid of FIG. 1 in the inverted state. 図１の容器蓋における外蓋の断面図。Sectional drawing of the outer cover in the container lid of FIG. 図１の容器蓋を、中栓に外蓋が所要とおりに装着されている状態で示す断面図。Sectional drawing which shows the container lid of FIG. 1 in the state by which the outer lid | cover was mounted | worn as required to the inner stopper. 図８に示す状態における中栓の係止壁と外蓋の係止突起との関係を示す部分斜面図。The partial slope figure which shows the relationship between the latching wall of the inner stopper in the state shown in FIG. 8, and the latching protrusion of an outer cover. 図１の容器蓋を、中栓から外蓋を離脱するために外蓋を開方向に幾分回転せしめた状態で示す断面図。FIG. 2 is a cross-sectional view showing the container lid of FIG. 1 in a state where the outer lid is somewhat rotated in the opening direction in order to remove the outer lid from the inner stopper. 図１０に示す状態における中栓の係止壁と外蓋の係止突起との関係を示す部分斜面図。The partial slope figure which shows the relationship between the latching wall of the inner stopper in the state shown in FIG. 10, and the latching protrusion of an outer cover. 図１の容器蓋を、中栓から外蓋を離脱せしめた状態で示す断面図。Sectional drawing which shows the container cover of FIG. 1 in the state which removed the outer cover from the inner stopper. 図１２に示す状態における中栓の係止壁と外蓋の係止突起との関係を示す部分斜面図。The partial slope figure which shows the relationship between the latching wall of the inner stopper in the state shown in FIG. 12, and the latching protrusion of an outer cover. 係止片の変形例を示す部分簡略図。The partial simplified figure which shows the modification of a locking piece. 図１４の係止片の作用状態を示す部分簡略図。FIG. 15 is a partial simplified view showing an operation state of the locking piece of FIG. 14.

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.

図１を参照して説明すると、本発明に従って構成された容器蓋は、二点鎖線で口頸部２のみを図示している容器の口頸部に固着される中栓４、及びこの中栓４に装着されている外蓋６を具備している。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することができる容器の口頸部２は全体として円筒形状であり、上面は開口されている。口頸部２の外周面には係止あご部８とこの係止あご部８よりも下方に位置するサポートリング１０が形成されている。中栓４は軟質ポリエチレンの如き適宜の合成樹脂から射出乃至圧縮成形することができ、同様に外蓋６もポリプロピレンの如き適宜の合成樹脂から射出乃至圧縮成形することができる。 Referring to FIG. 1, a container lid constructed according to the present invention includes an inner plug 4 that is fixed to the mouth and neck of a container showing only the mouth and neck 2 by a two-dot chain line, and the inner plug. 4 is provided with an outer lid 6 attached to 4. The mouth-and-neck portion 2 of the container, which can be formed from an appropriate synthetic resin such as polyethylene terephthalate, glass, or a metal thin plate, has a cylindrical shape as a whole and has an upper surface opened. A locking jaw portion 8 and a support ring 10 positioned below the locking jaw portion 8 are formed on the outer peripheral surface of the mouth and neck portion 2. The inner plug 4 can be injected or compression-molded from an appropriate synthetic resin such as soft polyethylene, and the outer lid 6 can be similarly injected or compression-molded from an appropriate synthetic resin such as polypropylene.

図１と共に図２乃至図５を参照して説明を続けると、中栓４は全体として水平に延在する円形閉塞壁１２を有している。この閉塞壁１２の中央領域には細長形状の除去領域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、閉塞壁１２の中央領域に略楕円形状の破断可能薄肉ライン１４が形成されており、略楕円形状の除去領域１６が規定されている(特に図５を参照されたい)。図１及び図４を参照することによって明確に理解される如く、除去領域１６は破断可能薄肉ライン１４の外側領域よりも上方に変位せしめられており、除去領域１６の下面は破断可能薄肉ライン１４よりも外側の領域の上面と実質上同高或いはこれよりも幾分上方に位置せしめられているのが好適である。閉塞壁１２の下面には、最外周縁部から垂下する円筒形垂下壁１８と、この垂下壁１８よりも半径方向内側に位置する環状シール片２０とが形成されている。垂下壁１８の内周面下端部には環状係止突条１９が形成されている。閉塞壁１２の上面には、その外周縁部から上方に延出する円筒形装着壁２２と、装着壁２２よりも半径方向内側に位置する略円筒形状の注出筒２４が形成されている。装着壁２２の外周面には雄螺条２６が形成されている。注出筒２４の上端部は半径方向外方に円弧状に湾曲せしめられている。閉塞壁１２の上面には、更に、破断可能薄肉ライン１４に内接した下端縁から上方に突出する係止壁２８が形成されていることが重要である。係止壁２８は実質上鉛直に上方に突出せしめられていて略楕円筒形状であるのが好都合である。係止壁２８の、除去領域１６の長手方向片側において外蓋６の開回転方向（図２において矢印Ａで示す方向）上流側に位置する外面には、実質上水平に延びる溝３０が形成されている。同様に、図２には図示していないが、係止壁２８の、除去領域１６の長手方向他側においても外蓋６の開回転方向上流側に位置する外面には、実質上水平に延びる溝３０が形成されている。係止壁２８には、更に、除去領域１６の長手方向片側において外蓋６の開回転方向に見て下流側に位置する内面に係止片３２が形成され、同様に除去領域１６の長手方向他側においても外蓋６の開回転方向に見て下流側に位置する内面に係止片３２が形成されていることが重要である。係止片３２は係止壁２８の内面を実質上鉛直に延在し、略二等辺三角形状の横断面形状を有する。上記溝３０及び係止片３２は、後の説明から明らかになるとおり、被係合手段を構成する。 The description will be continued with reference to FIGS. 2 to 5 together with FIG. 1. The inner plug 4 has a circular blocking wall 12 extending horizontally as a whole. It is important that an elongated removal region is formed in the central region of the blocking wall 12. In the illustrated embodiment, a substantially elliptical breakable thin line 14 is formed in the central region of the blocking wall 12 to define a substantially elliptical removal region 16 (see in particular FIG. 5). . As can be clearly understood by referring to FIGS. 1 and 4, the removal region 16 is displaced above the outer region of the breakable thin line 14, and the lower surface of the removal region 16 is broken. Preferably, it is positioned substantially at the same level as or slightly above the top surface of the outer region. On the lower surface of the blocking wall 12, a cylindrical hanging wall 18 that hangs from the outermost peripheral edge portion and an annular seal piece 20 that is located radially inward of the suspending wall 18 are formed. An annular locking ridge 19 is formed at the lower end of the inner peripheral surface of the hanging wall 18. On the upper surface of the blocking wall 12, a cylindrical mounting wall 22 extending upward from an outer peripheral edge portion thereof and a substantially cylindrical pouring cylinder 24 positioned radially inward of the mounting wall 22 are formed. A male thread 26 is formed on the outer peripheral surface of the mounting wall 22. The upper end portion of the dispensing cylinder 24 is curved in an arc shape outward in the radial direction. It is important that a locking wall 28 is formed on the upper surface of the blocking wall 12 so as to protrude upward from a lower end edge inscribed in the breakable thin line 14. Conveniently, the locking wall 28 protrudes upward substantially vertically and has a substantially elliptical cylindrical shape. A groove 30 extending substantially horizontally is formed on the outer surface of the locking wall 28 on the upstream side in the opening rotation direction of the outer lid 6 (the direction indicated by the arrow A in FIG. 2) on one side in the longitudinal direction of the removal region 16. ing. Similarly, although not shown in FIG. 2, the outer surface of the locking wall 28 located on the upstream side in the opening rotation direction of the outer lid 6 also extends substantially horizontally on the other side in the longitudinal direction of the removal region 16. A groove 30 is formed. The locking wall 28 is further formed with a locking piece 32 on the inner surface located on the downstream side when viewed in the opening rotation direction of the outer lid 6 on one side in the longitudinal direction of the removal region 16. It is important that the locking piece 32 is formed on the inner surface located on the downstream side as viewed in the opening rotation direction of the outer lid 6 also on the other side. The locking piece 32 extends substantially vertically on the inner surface of the locking wall 28 and has a substantially isosceles triangular cross-sectional shape. The groove 30 and the locking piece 32 constitute an engaged means, as will be apparent from the following description.

図１と共に図６及び図７を参照して説明を続けると、図示の実施形態における外蓋６は円形天面壁３４とこの天面壁３４の外周縁から垂下する円筒形状のスカート壁３６とを有する。図１に図示する如く、スカート壁３６の外周面には掛けられる指の滑りを防止するためのナール（凹凸形状）３８が形成されている。天面壁３４の下面には、その外周縁部から下方に垂下する円筒形被装着壁４０、及び被装着壁４０よりも半径方向内側において下方に垂下する円筒形シール片４１が配設されている。被装着壁４０の内周面下部には雌螺条４３が形成されている。図６に明確に図示する如く、天面壁３４の下面には、更に、係止突起が配設されていることが重要である。天面壁３４におけるシール片４１よりも半径方向内側の中央領域には４個の係止突起、即ち一対の外側係止突起４２ａ及び４２ｂと一対の内側係止突起４４ａ及び４４ｂとが配設されている。直径方向に対向して位置する一対の外側係止突起４２ａ及び４２ｂの各々は略勾玉形状であり、使用材料量を低減するために３個の空所が形成されている。一対の外側係止突起４２ａ及び４２ｂの各々の、中栓４における係止壁２８の溝３０が形成されている面に対向して位置せしめられる面には、実質上水平に延びる突条４６が形成されている。後に更に言及する如く、突条４６は係合手段を構成し、中栓４における係止壁２８に形成されている溝３０と協働する。所望ならば、図示の実施形態の場合とは逆に、係止壁２８に突条を形成し外側係止突起４２ａ及び４２ｂに溝を形成することもできる。直径方向に対向して位置する一対の内側突起４４ａ及び４４ｂの各々は、略台形状であり、使用材料量を低減するための２個の空所が形成されている。 6 and 7 together with FIG. 1, the outer lid 6 in the illustrated embodiment has a circular top wall 34 and a cylindrical skirt wall 36 depending from the outer peripheral edge of the top wall 34. . As shown in FIG. 1, a knurl (uneven shape) 38 is formed on the outer peripheral surface of the skirt wall 36 to prevent slipping of a finger to be hung. A cylindrical mounting wall 40 that hangs downward from the outer peripheral edge portion thereof and a cylindrical seal piece 41 that hangs downward on the radially inner side of the mounting wall 40 are disposed on the lower surface of the top wall 34. . A female thread 43 is formed in the lower part of the inner peripheral surface of the mounted wall 40. As clearly shown in FIG. 6, the lower surface of the top panel wall 34, further, it is important that the retaining projections are arranged. Four locking protrusions radially inwardly of the central region than the sealing strip 41 of the top wall 34, i.e. a pair of outer locking projections 42a and 42b and a pair of inner locking projections 44a and 44b is disposed Yes. Each of the pair of outer locking projections 42a and 42b located opposite to each other in the diameter direction has a substantially slanting shape, and three spaces are formed in order to reduce the amount of material used. On the surface of each of the pair of outer locking protrusions 42a and 42b that is positioned opposite to the surface of the inner plug 4 where the groove 30 of the locking wall 28 is formed, a protrusion 46 that extends substantially horizontally is provided. Is formed. As will be further described later, the protrusion 46 constitutes an engaging means and cooperates with a groove 30 formed in the locking wall 28 of the inner plug 4. If desired, contrary to the illustrated embodiment, a protrusion can be formed on the locking wall 28 and grooves can be formed on the outer locking protrusions 42a and 42b. Each of the pair of inner protrusions 44a and 44b positioned opposite to each other in the diametrical direction has a substantially trapezoidal shape, and two voids are formed to reduce the amount of material used.

上述したとおりの中栓４と外蓋６とは、中栓４の係止壁２８と外蓋６の外側係止突起４２ａ及び４２ｂ並びに内側係止突起４４ａ及び４４ｂとを図９に図示するとおりの関係に位置付けて、外蓋６内に中栓４を図８に図示する状態、即ち中栓４の閉塞壁１２の上面周縁部が外蓋６の被装着壁４０の下端に当接する状態、まで軸線方向に強制的に押込むことによって相互に組み合わされる。かくすると、図８に明確に図示する如く、中栓４の装着壁２２の外周面に形成されている雄螺条２６が外蓋６の被装着壁４０の内周面に形成されている雌螺条４３を弾性的に乗り越え、雄螺条２６と雌螺条４３とが相互に螺合せしめられた状態が確立される。中栓４と外蓋６とを相互に組み合わせる際に、中栓４に対して外蓋６が回転せしめられることはない。中栓４と外蓋６とが図８に示す状態に組み合わされると、外蓋６のシール片４１が中栓４の注出筒２４の内周面上端部に密接せしめられる。図８に示すとおりに組み合わされた容器蓋は、容器の口頸部２に対して図８に示す状態まで強制的に下降せしめることによって容器の口頸部２に装着される。かくすると、中栓４における垂下壁１８の内周面に形成されている係止突条１９が口頸部２の外周面に形成されている係止あご部８を弾性的に乗り越えてこれに係止せしめられ、中栓４が口頸部２に固着される。また、中栓４のシール片２０が口頸部２内に進入せしめられ、これによって口頸部２が密封される。 As described above, the inner plug 4 and the outer lid 6 include the locking wall 28 of the inner plug 4, the outer locking projections 42 a and 42 b and the inner locking projections 44 a and 44 b of the outer lid 6 as illustrated in FIG. 9. The state in which the inner plug 4 is shown in FIG. 8 in the outer lid 6, that is, the state where the upper peripheral edge of the closing wall 12 of the inner plug 4 abuts the lower end of the mounted wall 40 of the outer lid 6, They are combined with each other by forcibly pushing them in the axial direction. Thus, as clearly shown in FIG. 8, the female thread 26 formed on the outer peripheral surface of the mounting wall 22 of the inner plug 4 is formed on the inner peripheral surface of the mounted wall 40 of the outer lid 6. The state where the male thread 26 and the female thread 43 are screwed together is established by overcoming the thread 43 elastically. When the inner plug 4 and the outer lid 6 are combined with each other, the outer lid 6 is not rotated with respect to the inner plug 4. When the inner plug 4 and the outer lid 6 are combined in the state shown in FIG. 8, the seal piece 41 of the outer lid 6 is brought into close contact with the upper end portion of the inner peripheral surface of the dispensing tube 24 of the inner plug 4. The container lid combined as shown in FIG. 8 is attached to the mouth / neck part 2 of the container by forcibly lowering the container lid 2 to the state shown in FIG. Thus, the locking protrusion 19 formed on the inner peripheral surface of the hanging wall 18 in the inner plug 4 elastically climbs over the locking jaw portion 8 formed on the outer peripheral surface of the mouth-and-neck portion 2. The inner plug 4 is fixed to the mouth and neck portion 2 by being locked. Further, the sealing piece 20 of the inner plug 4 is caused to enter the mouth / neck portion 2, thereby sealing the mouth / neck portion 2.

容器の内容物を消費する際には、外蓋６のスカート壁３６に指を掛けて、中栓４に装着されている外蓋６を開方向（矢印Ａで示す方向）に回転する。外蓋６が略２５度程度の角度に渡って開方向に回転せしめられると、図１０及び図１１に図示する状態となり、図１１を参照することによって明確に理解されるとおり、外側係止突起４２ａ及び４２ｂが係止壁２８の外面に当接せしめられ、外側係止突起４２ａ及び４２ｂに係止されている突条４６が係止壁２８の外面に形成されている溝３０に係合せしめられ、これによって外側係止突起４２ａ及び４２ｂに対して係止壁２８が軸線方向に移動することが防止される。内側係止突起４４ａ及び４４ｂは係止壁２８の内面に当接せしめられる。図９と図１１とを比較参照することによって理解される如く、内側係止突起４４ａ及び４４ｂは係止壁２８の内面に形成されている係止片３２を弾性的に乗り越え、かくして内側係止突起４４ａ及び４４ｂが係止壁２８に対して相対的に閉方向（矢印Ａで示す方向に対して反対方向で、図９及び図１１において上方から見て反時計方向）に回転することが防止される。外蓋６が更に開方向に回転せしめられると、図１２及び図１３に図示する如く、外側係止突起４２ａ及び４２ｂ並びに内側係止突起４４ａ及び４４ｂを介して係止壁２８に加えられる力によって破断可能薄肉ライン１４が破断されて除去領域１６が閉塞壁１２から除去され、排出口が生成される。閉塞壁１２から除去された、係止壁２８を含む除去領域１６は、外蓋６から落下することなく外蓋６と共に中栓４から離脱せしめられる。しかる後においては中栓４の閉塞壁１２に生成された排出口を通して内容物を排出することができる。内容物の必要量の排出が終了した後においては、必要に応じて係止壁２８を含む除去領域１６を外蓋６から離脱して、外蓋６を中栓４に被嵌し、次いで閉方向に回転せしめて外蓋６の被装着壁４０の内周面に形成されている雌螺条４４を中栓４の装着壁２２の外周面に形成されている雄螺条２６に螺合せしめて中栓４に再び外蓋６を装着し、排出口を閉じることができる。外蓋６のシール４１は中栓４の注出筒２４の内周面上端部に密接せしめられる。 When the contents of the container are consumed, a finger is put on the skirt wall 36 of the outer lid 6 and the outer lid 6 attached to the inner plug 4 is rotated in the opening direction (direction indicated by arrow A). When the outer lid 6 is rotated in the opening direction over an angle of about 25 degrees, the state shown in FIGS. 10 and 11 is obtained, and as clearly understood by referring to FIG. 42 a and 42 b are brought into contact with the outer surface of the locking wall 28, and the protrusion 46 locked to the outer locking protrusions 42 a and 42 b is engaged with the groove 30 formed on the outer surface of the locking wall 28. This prevents the locking wall 28 from moving in the axial direction with respect to the outer locking protrusions 42a and 42b. The inner locking protrusions 44 a and 44 b are brought into contact with the inner surface of the locking wall 28. As can be understood by comparing FIGS. 9 and 11, the inner locking protrusions 44a and 44b elastically ride over the locking pieces 32 formed on the inner surface of the locking wall 28, and thus the inner locking protrusions. The protrusions 44a and 44b are prevented from rotating relative to the locking wall 28 in the closing direction (opposite to the direction indicated by the arrow A and counterclockwise when viewed from above in FIGS. 9 and 11). Is done. When the outer lid 6 is further rotated in the opening direction, as shown in FIGS. 12 and 13, due to the force applied to the locking wall 28 via the outer locking projections 42a and 42b and the inner locking projections 44a and 44b. The breakable thin-wall line 14 is broken to remove the removal region 16 from the blocking wall 12 to generate a discharge port. The removal region 16 including the locking wall 28 removed from the blocking wall 12 is separated from the inner plug 4 together with the outer lid 6 without dropping from the outer lid 6. Thereafter, the contents can be discharged through the discharge port formed in the closed wall 12 of the inner plug 4. After the necessary amount of content has been discharged, the removal region 16 including the locking wall 28 is detached from the outer lid 6 as necessary, and the outer lid 6 is fitted onto the inner plug 4 and then closed. The female thread 44 formed on the inner peripheral surface of the mounted wall 40 of the outer lid 6 by being rotated in the direction is screwed into the male thread 26 formed on the outer peripheral surface of the mounting wall 22 of the inner plug 4. The inner lid 4 can be reattached with the outer lid 6 to close the discharge port. The seal 41 of the outer lid 6 is in close contact with the upper end portion of the inner peripheral surface of the dispensing tube 24 of the inner plug 4.

図１４及び図１５は、係止壁２８の内面に配設されている係止片の変形例を図示している。図１４及び１５に図示する変形例においては、係止片３２は係止壁２８の長手方向片端内面及び長手方向他端内面の各々から延出するフラップから構成されている。外蓋６が図１４に図示する状態(図９に対応)から図１５に図示する状態（図１１に対応）まで開方向に回転せしめられると、内側係止突起４４ａ及び４４ｂは係止片３２を弾性的に乗り越え、係止片３２が内側係止突起４４ａ及び４４ｂの半径方向先端面に係止せしめられ、これによって内側係止突起４４ａ及び４４ｂが係止壁２８に対して相対的に閉方向に回転せしめられることが防止される。 FIG. 14 and FIG. 15 illustrate a modified example of the locking piece disposed on the inner surface of the locking wall 28. In the modification shown in FIGS. 14 and 15, the locking piece 32 is constituted by a flap extending from each of the inner surface at one end in the longitudinal direction and the inner surface at the other end in the longitudinal direction of the locking wall 28. When the outer lid 6 is rotated in the opening direction from the state illustrated in FIG. 14 (corresponding to FIG. 9) to the state illustrated in FIG. 15 (corresponding to FIG. 11), the inner locking protrusions 44a and 44b are locked to the locking piece 32. And the locking piece 32 is locked to the radially leading end surfaces of the inner locking projections 44a and 44b, whereby the inner locking projections 44a and 44b are closed relative to the locking wall 28. It is prevented from rotating in the direction.

以上、添付図面を参照して本発明に従って構成された容器蓋の好適実施形態について詳細に説明したが、本発明は係る実施形態に限定されるものではなく、本発明の範囲を逸脱することなく種々の変形乃至修正が可能であることは多言を要しない。例えば、図示の実施形態においては、被係合手段を構成する溝３０を係止壁２８の外面に配設し係合手段を構成する突条４６を外側係止突起４２ａ及び４２ｂに配設しているが、被係合手段を構成する溝３０を係止壁２８の内面に配設し係合手段を構成する突条４６を内側係止突起４４ａ及び４４ｂに配設することもできる。また、被係合手段を構成する係止片３２を係止壁２８の内面ではなくて外面に配設することもできる。更に、図示の実施形態においては容器蓋は、外周面には係止あご部が形成されている円筒形状の口頸部２を備えた容器に容器蓋を適用しているが、上記特許文献３に開示されている如く、所謂紙製容器の口頸部に容器蓋を適用することができる。この場合には、中栓における口頸部に溶着される部位の形態を上記特許文献３に開示されているとおりの形態に変更すればよい。 The preferred embodiments of the container lid configured according to the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to such embodiments and does not depart from the scope of the present invention. It is not necessary to say variously that various modifications or corrections are possible. For example, in the illustrated embodiment, the groove 30 constituting the engaged means is provided on the outer surface of the locking wall 28, and the protrusion 46 constituting the engaging means is provided on the outer locking protrusions 42a and 42b. However, the groove 30 constituting the engaged means can be arranged on the inner surface of the locking wall 28 and the protrusion 46 constituting the engaging means can be arranged on the inner locking protrusions 44a and 44b. Further, the locking piece 32 constituting the engaged means can be disposed not on the inner surface of the locking wall 28 but on the outer surface. Furthermore, in the illustrated embodiment, the container lid is applied to a container having a cylindrical mouth and neck portion 2 having a locking jaw portion formed on the outer peripheral surface. Can be applied to the mouth and neck of a so-called paper container. In this case, what is necessary is just to change the form of the site | part welded to the mouth-and-neck part in an inside plug to the form as the said patent document 3 discloses.

２：容器の口頸部
４：中栓
６：外蓋
１２：閉塞壁
１４：破断可能薄肉ライン
１６：除去領域
２２：装着壁
２６：雄螺条
２８：係止壁
３０：溝（被係合手段）
３２：係止片（被係合手段）
３４：天面壁
４０：被装着壁
４２ａ：外側係止突起
４２ｂ：外側係止突起
４４ａ：内側係止突起
４４ｂ：内側係止突起
４６：突条（係合手段） 2: Mouth and neck of container 4: Inner plug 6: Outer lid 12: Blocking wall 14: Breakable thin line 16: Removal area 22: Mounting wall 26: Male thread 28: Locking wall 30: Groove (engaged) means)
32: Locking piece (engaged means)
34: Top wall 40: Mounted wall 42a: Outer locking projection 42b: Outer locking projection 44a: Inner locking projection 44b: Inner locking projection 46: Projection (engaging means)

Claims

A container lid having an inner stopper fixed to the mouth and neck of the container, and an outer lid attached to the inner stopper,
The inner plug has a blocking wall and a cylindrical mounting wall extending upward from the peripheral edge of the upper surface of the blocking wall, and the blocking wall defines an elongated removal region surrounded by a breakable thin line. The removal region is provided with a locking wall protruding upward from a lower end edge inscribed in the breakable thin line, and a male thread is formed on the outer peripheral surface of the mounting wall. ,
Outer lid and a cylindrical mating attachment wall depending from the top panel wall and a top panel wall, the locking projection is formed that protrudes downward in a region inside the該被mounting wall at the lower surface of the top wall A female thread that cooperates with the male thread is formed on the inner peripheral surface of the mounted wall,
Engagement means is provided on the locking wall, and engagement means is provided on the locking projection. When the outer lid is rotated in the opening direction with respect to the inner plug, the engagement means is provided. Means and the engaged means prevent the locking wall from moving in the direction of the central axis relative to the locking protrusion, and the locking protrusion is relatively close to the locking wall in the closing direction. and prevented from rotating,
The locking protrusion includes a pair of inner locking protrusions, and one of the inner locking protrusions is opposed to an inner surface located on the downstream side of the locking wall in the opening direction on one side in the longitudinal direction of the removal region. The other of the pair of inner locking projections is positioned opposite the inner surface of the locking wall on the downstream side when viewed in the opening direction on the other side in the longitudinal direction of the removal region. And
The engaged means includes a pair of locking pieces, one of the locking pieces being formed on the inner surface of the locking wall on one longitudinal side of the removal region, and the other of the locking pieces being the removal region. It is formed on the inner surface of the locking wall on the other side in the longitudinal direction. When the outer lid is rotated in the opening direction with respect to the inner plug, the inner locking projection is locked to the locking piece. This prevents the inner locking projection from rotating relative to the locking wall in the closing direction.
Container lid, characterized in that.

The locking protrusion includes a pair of outer locking protrusions, and one of the pair of outer locking protrusions is an outer surface located upstream of the locking wall on one side in the longitudinal direction of the removal region as viewed in the opening direction. The other of the pair of outer locking projections is positioned opposite to the outer surface of the locking wall on the upstream side when viewed in the opening direction on the other side in the longitudinal direction of the removal region. Damned,
The engaged means includes a groove or a ridge formed on an outer surface located on the upstream side when viewed in the opening direction of the locking wall on one side and the other side in the longitudinal direction of the removal region. Includes a ridge or groove formed on a surface of the outer locking projection opposite to the groove or the ridge of the locking wall, and the outer engagement when the outer lid is rotated in the opening direction. The protrusion or groove of the stop protrusion engages with the groove or protrusion of the locking wall, thereby preventing the locking wall from moving in the central axis direction with respect to the outer locking protrusion. The container lid according to claim 1.

The removal region are caused to displace upward from the outer region of該破Dan possible thin line, according to claim 1 or 2 container closure according.