JP2024011417A

JP2024011417A - Synthetic resin-made pouring cap

Info

Publication number: JP2024011417A
Application number: JP2022113374A
Authority: JP
Inventors: 仁昭吉田; Hitoaki Yoshida
Original assignee: Tenryu Chemical Industry Co Ltd
Current assignee: Tenryu Chemical Industry Co Ltd
Priority date: 2022-07-14
Filing date: 2022-07-14
Publication date: 2024-01-25

Abstract

PROBLEM TO BE SOLVED: To provide a hinge cap capable of being easily removed from a bottle mouth.

SOLUTION: A pouring cap has a body 1, an upper lid 2, and a hinge 3. The body 1 has a downward outer cylinder 5, a downward inner cylinder 6, and a top plate 7 connected to the upper ends of both cylinders. The top plate 7 has a pouring part 18. The downward outer cylinder 5 has a weakened groove 21 for forming a circumferential weakened line 23 and a thin groove 22 having no weakened line which are continuously formed in series. A circumferential weakened line 23b is also formed at the place of a finger hooking recess 13 in the downward outer cylinder 5. The circumferential weakened line 23 develops at a development angle exceeding 180°. Therefore, the removal of the cap from a bottle mouth 4 can be facilitated. Since the circumferential weakened line does not exist in the place of the thin groove 22, the strength of the downward outer cylinder 5 can be prevented from being excessively reduced.

SELECTED DRAWING: Figure 2

Description

本願発明は、内容物を注出するためにボトル（容器）の瓶口に打栓で装着される合成樹脂製の注出キャップに関し、ボトルから分別する技術に特徴を有している。 The present invention relates to a synthetic resin pouring cap that is attached to the mouth of a bottle (container) in order to pour out the contents, and is characterized by a technique for separating the contents from the bottle.

瓶口に打栓で装着される合成樹脂製の注出キャップは、調味料包装用のボトルを初めとして様々なボトルに使用されている。打栓タイプの注出キャップはボトルへの装着が容易でシール性にも優れているが、内容物を消費した後のボトルとの分別が面倒であり、これが注出キャップ及びボトルのリサイクルの障害になっていた。 Synthetic resin pouring caps, which are attached to bottle openings, are used on a variety of bottles, including bottles for packaging seasonings. Plug-in type pouring caps are easy to attach to bottles and have excellent sealing properties, but it is troublesome to separate them from the bottle after the contents have been consumed, and this is an obstacle to recycling the pouring caps and bottles. It had become.

そこで、消費者がボトルからの分別を容易に行えるための対策が多々提案されている。その一例として特許文献１には、キャップ本体を構成する筒状側壁（本願発明の下向き外筒）の上面に溝部を有する構成において、溝部を、破断溝部と非破断溝部とで構成して、両者の間に溝部及び弱化線が存在しない部分を介在させることが開示されている。 Therefore, many measures have been proposed to allow consumers to easily sort bottles. As an example, Patent Document 1 discloses that in a structure having a groove on the upper surface of the cylindrical side wall (the downward facing outer cylinder of the present invention) constituting the cap body, the groove is composed of a breakable groove and a non-breakable groove, and both It is disclosed that a groove portion and a portion where no weakening line is present are interposed between the two.

すなわち、特許文献１では、実施形態を参酌すると、破断溝部と非破断溝部とはいずれも同じ深さで同じ断面形状に形成されており、両者の間に溝が存在せずに弱化部（溝無し部）が存在しない部位を介在させることにより、一方の溝部を破断溝部として機能させて他方の溝部を非破断溝部として機能させていると思料される。 That is, in Patent Document 1, when considering the embodiment, the fractured groove portion and the non-fractured groove portion are both formed to the same depth and the same cross-sectional shape, and there is no groove between them, and a weakened portion (groove) is formed. It is thought that by intervening a portion where no (absent portion) exists, one groove portion functions as a rupture groove portion and the other groove portion functions as a non-rupture groove portion.

更に述べると、特許文献１は、破断溝部と非破断溝部とはいずれも同じ深さで同じ断面形状に形成して対向させることにより、打栓に際しての変形を共通化して打栓不良を防止しつつ、２つの溝部の間に破断不能な溝無し部を介在させることにより、他方の溝部を非破断溝部と成して、ボトルからの取り外しに際しての引っ張り力を溝無し部に集中させて瓶口からの抜き外しを容易化しているものと思料される。 More specifically, Patent Document 1 discloses that both the fractured groove and the non-ruptured groove are formed to have the same depth and the same cross-sectional shape and face each other, thereby making deformation common during capping and preventing poor capping. At the same time, by interposing an unbreakable non-grooved portion between the two grooves, the other groove becomes an unbreakable groove, and the tensile force when removing the bottle from the bottle is concentrated on the non-grooved portion. It is thought that this makes it easier to remove it from the body.

また、特許文献１はヒンジキャップを主たる実施形態としており、上蓋を分別時の摘みに兼用して、溝無し部をヒンジと反対側の部位（開蓋用のタブの下方の部位）に配置している。 Furthermore, Patent Document 1 mainly uses a hinge cap, in which the top lid is also used as a knob for sorting, and the non-grooved part is placed in a part on the opposite side of the hinge (a part below the tab for opening the lid). ing.

特許第５６１３４８９号公報Patent No. 5613489

上記のとおり、特許文献１では、打栓時の変形を全体として共通化するために破断溝部と非破断溝部とを同じ深さで同じ断面形状に形成しているが、引っ張り力を特定箇所に集中させてボトルからの抜き取りを容易化するためには、破断溝部を本体の半周程度の範囲に設定せねばならず、そこで、ヒンジキャップでは、ヒンジと反対側の部位に破断不能な溝無し部を配置している。 As mentioned above, in Patent Document 1, the breaking groove and the non-breaking groove are formed to have the same depth and the same cross-sectional shape in order to standardize the deformation during plugging as a whole, but the tensile force is applied to a specific location. In order to make it easy to concentrate and remove from the bottle, it is necessary to set the break groove in a range of about half the circumference of the main body. Therefore, in the hinge cap, an unbreakable grooveless part is provided on the opposite side of the hinge. are placed.

しかるに、溝無し部は周方向にある程度の幅寸法があるため、ヒンジキャップにおいてヒンジと反対側の部位に破断不能な溝無し部を配置すると、破断溝部を設けたエリア（弱化線を設けたエリア）の範囲に広がり角度に限度があるため、キャップをボトルから取り外すに際して瓶口に対する筒状側壁の係合力を十分に解除できずに、取り外しの軽快性が不十分になることが懸念される。 However, since the grooveless part has a certain width in the circumferential direction, if the unbreakable grooveless part is placed on the opposite side of the hinge cap, the area where the breakage groove is provided (the area where the weakened line is provided) ), and there is a limit to the angle, so there is a concern that when removing the cap from the bottle, the engagement force of the cylindrical side wall with the bottle mouth may not be sufficiently released, resulting in insufficient ease of removal.

また、特許文献１のように破断溝部と非破断溝部とが同じ深さで同じ断面形状に設定されていると、ほぼ全周に亙って弱化線が形成されているのと同じになるため、筒状側壁が全体として強度が低下し過ぎることも懸念される。 Furthermore, if the fractured groove and the non-fractured groove are set to the same depth and the same cross-sectional shape as in Patent Document 1, it will be the same as a weakened line being formed over almost the entire circumference. There is also a concern that the strength of the cylindrical side wall as a whole may decrease too much.

本願発明は、このような現状を改善すべく成されたものである。 The present invention has been made to improve the current situation.

本願発明は様々な構成を含んでおり、典型例を各請求項で特定している。このうち請求項１の発明は、
「瓶口に打栓によって嵌着する本体と、前記本体に被さる上蓋とを備えて、
前記本体は、前記瓶口の上に位置する天板と、前記天板から垂下して前記瓶口の外周面に嵌着する下向き外筒と、前記天板に設けた注出部とを有しており、前記外筒に、当該下向き外筒を周方向に引き裂いて前記瓶口からの取り外しを容易化する周方向弱化線が形成されている」
という合成樹脂製の注出キャップにおいて、
「前記天板の上面に、前記周方向弱化線を形成するための弱化用溝と、前記下向き外筒を引き裂き不能に保持した肉盗み用溝とが、一連に連続した状態で周方向に延びるように開口している」
という特徴を備えている。 The present invention includes various configurations, typical examples of which are specified in each claim. Among these, the invention of claim 1 is:
"Equipped with a main body that fits into the mouth of the bottle with a stopper, and a top lid that covers the main body,
The main body includes a top plate located above the bottle spout, a downwardly directed outer cylinder that hangs down from the top plate and fits onto the outer circumferential surface of the bottle spout, and a pouring part provided on the top plate. A circumferential weakening line is formed on the outer cylinder to tear the downward facing outer cylinder in the circumferential direction to facilitate removal from the bottle mouth.
In the synthetic resin pouring cap,
"A weakening groove for forming the circumferential weakening line and a meat-stealing groove that holds the downwardly facing outer cylinder in an untearable manner extend in the circumferential direction in a continuous manner on the upper surface of the top plate. It's open like that.''
It has the following characteristics.

請求項２の発明は請求項１の展開例であり、
「前記本体と上蓋とは屈曲自在なヒンジを介して一体に繋がっており、
前記下向き外筒のうち前記周方向弱化線を備えた引き起し部の始端部は、前記下向き外筒のうち他の部位と引き千切り可能な補助弱化部を介して一体に繋がっていると共に、前記ヒンジと一体に繋がっている」
という構成になっている。 The invention of claim 2 is a development example of claim 1,
“The main body and the top lid are integrally connected via a bendable hinge,
A starting end of the pulling-up portion of the downward outer cylinder including the circumferential weakening line is integrally connected to other parts of the downward outer cylinder via an auxiliary weakened part that can be torn to pieces, It is integrally connected to the hinge.
The structure is as follows.

請求項３の発明は、請求項２の展開例であり、
「前記上蓋の外周面のうち前記ヒンジと反対側に位置した部位の下端に開蓋用のタブが突設されて、前記本体の外周面のうち前記ヒンジと反対側の部に、前記タブの下方に位置した開蓋用の指掛け凹所が形成されており、
前記弱化用溝は、前記指掛け凹所を挟んで一方のエリアに設けた第１周方向弱化線と前記指掛け凹所の箇所に設けた第２周方向弱化線とで構成されて、前記肉盗み用溝は、前記指掛け凹所を挟んで他方のエリアに形成されている」
という構成になっている。 The invention of claim 3 is a development example of claim 2,
A tab for opening the lid is provided protruding from the lower end of a portion of the outer peripheral surface of the upper lid located on the opposite side of the hinge, and a tab for opening the lid is provided on a portion of the outer peripheral surface of the main body opposite to the hinge. There is a finger rest recess located at the bottom for opening the lid.
The weakening groove is composed of a first circumferential weakening line provided in one area with the finger hook recess in between, and a second circumferential weakening line provided at the finger hook recess, and The usage groove is formed in the other area across the finger rest recess.
The structure is as follows.

請求項４の発明は請求項１と並立して上位概念を成すもので、
「瓶口に打栓によって嵌着する本体と、屈曲自在なヒンジを介して前記本体に繋がった上蓋とを備えており、
前記上蓋の外周面のうち前記ヒンジと反対側に位置した部位の下端に開蓋用のタブが突設されている一方、
前記本体は、前記瓶口の上に位置する天板と、前記天板から垂下して前記瓶口の外周面に嵌着する下向き外筒と、前記天板に設けた注出部とを有して、前記下向き外筒の外周面のうち前記ヒンジと反対側の部に、前記タブの下方に位置した開蓋用の指掛け凹所が形成されており、
かつ、前記下向き外筒には、当該下向き外筒を周方向に引き裂いて前記瓶口からの取り外しを容易化する周方向弱化線が形成されている」
という基本構成になっている。 The invention of claim 4 constitutes a generic concept in parallel with claim 1,
``Equipped with a main body that fits into the mouth of the bottle with a stopper, and a top lid connected to the main body via a bendable hinge,
A tab for opening the lid is provided protruding from the lower end of a portion of the outer peripheral surface of the upper lid located on the opposite side from the hinge;
The main body includes a top plate located above the bottle spout, a downwardly directed outer cylinder that hangs down from the top plate and fits onto the outer circumferential surface of the bottle spout, and a pouring part provided on the top plate. a finger-rest recess for opening the lid located below the tab is formed on the outer circumferential surface of the downward-facing outer cylinder on a side opposite to the hinge;
Further, a circumferential weakening line is formed on the downward outer cylinder to tear the downward outer cylinder in the circumferential direction to facilitate removal from the bottle mouth.
This is the basic configuration.

そして、
「前記天板の上面のうち前記指凹所を挟んで一方の部位に、第１周方向弱化線を形成するための弱化用溝が周方向に延びるように開口して、前記天板のうち前記指掛け凹所を挟んだ他方の部位に、前記外筒を引き裂き不能に保持した肉盗み用溝が開口しており、
前記下向き外筒のうち前記指掛け凹所の箇所には、上向きの溝を設けることなく薄肉化された第２周方向弱化線が前記第１周方向弱化線と連続した状態に形成されている」
という特徴を備えている。 and,
"A weakening groove for forming a first circumferential weakening line is opened in one part of the upper surface of the top plate across the finger recess so as to extend in the circumferential direction," A meat-stealing groove that holds the outer cylinder in an untearable manner is opened at the other part sandwiching the finger-holding recess;
A second circumferential weakening line, which is thinned without providing an upward groove, is formed in a continuous state with the first circumferential weakening line at the finger hook recess of the downward outer cylinder.
It has the following characteristics.

請求項５の発明は請求項１～４うちのいずれかを具体化したもので、
「前記肉盗み用溝を前記弱化用溝よりも浅くすることにより、前記肉盗み用溝の箇所で前記下向き外筒は引き裂き不能に保持されている」
という特徴を備えている。 The invention of claim 5 embodies any one of claims 1 to 4,
"By making the meat-stealing groove shallower than the weakening groove, the downwardly facing outer cylinder is held at the location of the meat-stealing groove so that it cannot be torn apart."
It has the following characteristics.

請求項５の発明も請求項１～４うちのいずれかを具体化したもので、
「前記肉盗み用溝の深さは前記弱化用溝と同じに設定されており、前記肉盗み用溝の下端部の内周面と前記下向き外筒の内周面との間の肉厚が破断不能な厚さに設定されている」
という特徴を備えている。 The invention of claim 5 also embodies any one of claims 1 to 4,
"The depth of the meat stealing groove is set to be the same as the weakening groove, and the wall thickness between the inner circumferential surface of the lower end of the meat stealing groove and the inner circumferential surface of the downward facing outer cylinder is The thickness is set to be unbreakable.”
It has the following characteristics.

請求項７の発明は請求項１，４と並立して上位概念を成すもので、請求項４と同じ基本構成において、
「前記天板の上面のうち前記指掛け凹所を挟んで一方の部位に、前記周方向弱化線を形成するための弱化用溝が周方向に延びるように開口して、前記天板のうち前記指掛け凹所を挟んだ他方の部位に、前記破断溝部よりも浅い深さに設定された穴の群が周方向に断続的に配置されているか、又は、前記破断溝部よりも浅い溝が周方向に長く形成されている」
という構成になっている。 The invention of claim 7 constitutes a generic concept in parallel with claims 1 and 4, and has the same basic configuration as claim 4,
"A weakening groove for forming the circumferential weakening line is opened in one part of the upper surface of the top plate across the finger hook recess so as to extend in the circumferential direction," On the other side of the finger hook recess, a group of holes each having a depth shallower than the fracture groove are disposed intermittently in the circumferential direction, or a groove shallower than the fracture groove is arranged in the circumferential direction. It has been formed for a long time.”
The structure is as follows.

請求項７において、本体のうち指掛け凹所を形成している部位（ヒンジと反対側の自由端部）は、弱化線が存在しない非破断部になっていてもよいし、第１周方向弱化線に連続した第２周方向弱化線が形成されていてもよい。 In claim 7, the portion of the main body that forms the finger-holding recess (the free end on the opposite side to the hinge) may be an unbroken portion without a weakened line, or may be a first circumferential weakened portion. A second circumferential weakening line may be formed that is continuous with the line.

本願各発明において、弱化用溝はその機能からして一連に延びている必要があるが、請求項１～６の肉盗み用溝は必ずしも一連に延びている必要はなく、断続していてもよい。すなわち、請求項７のように複数の穴の群が周方向に断続的に並んでいる態様も、本願発明では肉盗み用溝として観念できる。 In each of the inventions of the present application, the weakening grooves need to extend in a series due to their functions, but the grooves for meat stealing in claims 1 to 6 do not necessarily need to extend in a series, and may be discontinuous. good. That is, an embodiment in which a plurality of holes are arranged intermittently in the circumferential direction as in claim 7 can also be considered as a meat-stealing groove in the present invention.

なお、請求項１の発明は上蓋をねじ蓋に構成している注出キャップにも適用できる。この場合は、第１弱化用溝が形成されている引き起し部の始端部（非破断溝部との連結部と反対側の端部）に、人が引っ張るための摘み片を設けたらよい（ヒンジキャップにおいても摘み片を設けることは可能であるが、ヒンジキャップでは上蓋を摘みに兼用するのが合理的である。）。 Note that the invention of claim 1 can also be applied to a pouring cap in which the upper lid is configured as a screw lid. In this case, a grip piece for a person to pull may be provided at the starting end of the pulling part where the first weakening groove is formed (the end opposite to the connecting part with the non-breakable groove part). Although it is possible to provide a knob on a hinged cap, it is more reasonable to use the top cover as the knob.)

また、本願各発明において、注出部は、ブルタプを備えていて閉鎖板を引き裂く方式と、開蓋するとそのまま注出できるノズル式とのいずれも採用できる。或いは、アルミ箔等のシール材で封止して、シール材を除去又は破ることで開封するタイプ等も採用可能である。 Further, in each of the inventions of the present application, the spouting section can be either a method that is equipped with a bull tap and tears off the closing plate, or a nozzle type that allows pouring as is when the lid is opened. Alternatively, a type that is sealed with a sealing material such as aluminum foil and opened by removing or breaking the sealing material can also be adopted.

請求項１の発明では、下向き外筒のうち肉盗み用溝を設けた部位は引き裂き不能に保持されているため、下向き外筒が全体として強度が低下し過ぎることを防止して、打栓不良率の低下に貢献可能となる。 In the invention of claim 1, since the portion of the downward-facing outer cylinder in which the meat-stealing groove is provided is held in such a way that it cannot be torn, the strength of the downward-facing outer cylinder as a whole is prevented from decreasing too much, and poor plugging is prevented. This can contribute to lowering the rate.

また、特許文献１のような溝無し部は不要であることから、弱化用溝と肉盗み用溝との範囲を自由に設定できるため、弱化用溝は周方向に１８０°を越える範囲に設定することも容易であり、このため、瓶口からの取り外しに際して瓶口に対する下向き外筒の係合力を十分に解除して、注出キャップを瓶口から除去することを容易化できる。 In addition, since the grooveless part as in Patent Document 1 is unnecessary, the range of the weakening groove and the groove for thinning can be set freely, so the weakening groove is set in a range exceeding 180° in the circumferential direction. Therefore, when the spout cap is removed from the bottle spout, the engagement force of the downward outer cylinder with respect to the bottle spout is sufficiently released, making it easy to remove the spout cap from the bottle spout.

請求項２の構成では、ヒンジキャップに適用して上蓋を摘みに兼用できるため、弱化用溝を設けた部位（引き起し部）に対して強い引っ張り力を作用させることができる。従って、注出キャップの除去を容易に行える。 According to the structure of the second aspect, since the top cover can be used as a knob when applied to a hinge cap, a strong tensile force can be applied to the part (pulling part) provided with the weakening groove. Therefore, the pouring cap can be easily removed.

請求項３はヒンジキャップの展開例であるが、下向き外筒のうち指掛け凹所の箇所に第２周方向弱化線が形成されているため、弱化線は周方向の１８０°よりも広い範囲に形成できる。このため、瓶口に対する下向き外筒の係合力を低下させることを確実化して、瓶口からの注出キャップの取り外しの容易化に貢献できる。 Claim 3 is a development example of the hinge cap, and since the second circumferential weakening line is formed at the finger hook recess in the downward outer cylinder, the weakening line extends over a wider range than 180° in the circumferential direction. Can be formed. Therefore, it is possible to ensure that the engagement force of the downward outer cylinder with the bottle spout is reduced, thereby contributing to facilitating the removal of the spouting cap from the bottle spout.

ヒンジキャップにおいて、下向き外筒のうちヒンジと反対側の部位には指掛け用凹所を設けていることが多いが、指掛け用凹所を設けるとその部分の肉厚は薄くなる。このため、指掛け用凹所の箇所に弱化用溝を形成するに当たっては、指掛け用凹所の箇所では弱化用溝の溝幅を小さくせねばならず、すると、金型の強度が低下するおそれがある。さりとて、指掛け用凹所を無くすと上蓋を起こしにくくなるため得策でない。 In hinge caps, a finger-rest recess is often provided in a portion of the downward-facing outer cylinder on the opposite side of the hinge, but when the finger-rest recess is provided, the wall thickness of that portion becomes thinner. For this reason, when forming a weakening groove in the finger-rest recess, the width of the weakening groove must be made smaller at the finger-rest recess, which may reduce the strength of the mold. be. However, it is not a good idea to eliminate the recess for finger rest because it will make it difficult to raise the top cover.

この点、請求項４のように、指掛け用凹所の箇所に弱化用溝を設けることなく第２周方向弱化線を形成すると、開蓋の容易性と金型の強度低下とをもたらすことなく周方向弱化線を適度な範囲に設定して、瓶口からの注出キャップの除去を容易化できる。 In this regard, if the second circumferential weakening line is formed without providing a weakening groove in the finger hook recess as claimed in claim 4, the lid can be opened easily and the strength of the mold is not reduced. By setting the circumferential weakening line within an appropriate range, it is possible to facilitate removal of the pouring cap from the bottle mouth.

肉盗み用溝の形状や深さは様々に設定できる。請求項５のように単純に浅くして下向き外筒を破断不能に保持すると、金型を単純化できる。他方、請求項６のように弱化用溝と同じ深さにしつつ下端部を幅狭にして下向き外筒の内周部を破断不能な肉厚に設定すると、打栓時の変形の均一化を確実化できる利点がある。 The shape and depth of the meat stealing groove can be set in various ways. If the downward outer cylinder is held unbreakable by simply making it shallower as in claim 5, the mold can be simplified. On the other hand, if the inner peripheral part of the downwardly directed outer cylinder is set to have a wall thickness that cannot be broken by making the lower end part narrow while making the same depth as the weakening groove as in claim 6, the deformation at the time of plugging can be made uniform. It has the advantage of being reliable.

さて、本体に破断溝部のみを半周程度形成することは従来から提案されているが、この場合は、破断溝部が形成されていない部位の肉厚が厚くなるため、成型後に、天板の上面又は外周面や下向き外筒の外周面にヒケが発生しやすくなることが懸念される。さりとて、特許文献１のように、破断溝部と同じ深さの非破断溝部を形成すると、既述のとおり強度が低下し過ぎてしまうことが懸念される。 Now, it has been proposed in the past to form only a break groove around half the circumference of the main body, but in this case, the thickness of the part where the break groove is not formed becomes thicker, so after molding, the upper surface of the top plate or There is a concern that sink marks may easily occur on the outer peripheral surface or the outer peripheral surface of the downward facing outer cylinder. However, if a non-breakable groove portion having the same depth as the breakable groove portion is formed as in Patent Document 1, there is a concern that the strength will decrease too much as described above.

この点、請求項７のように、弱化用溝と反対側の非破断部に穴の群を形成したり浅い溝を形成したりすると、成型後の収縮が穴の群によって吸収されることにより、ヒケを防止できる。この場合、ヒケ防止のための穴又は溝は弱化用溝に比べて浅いので、非破断部の強度が過度に低下することはなくて、打栓を安定的に行える。 In this regard, if a group of holes or a shallow groove is formed in the non-breakable part on the opposite side of the weakening groove as in claim 7, the shrinkage after molding is absorbed by the group of holes. , can prevent sink marks. In this case, since the hole or groove for preventing sinkage is shallower than the weakening groove, the strength of the unbroken portion does not decrease excessively, and the plugging can be stably performed.

第１実施形態を示す図で、（Ａ）は閉蓋状態での正面図、（Ｂ）は閉蓋状態での背面図、（Ｃ）は開蓋状態の平面図、（Ｄ）は開蓋状態の底面図である。Figures illustrating the first embodiment, (A) is a front view with the lid closed, (B) is a rear view with the lid closed, (C) is a plan view with the lid open, and (D) is a top view with the lid open. It is a bottom view of a state. 第１実施形態を示す図で、（Ａ）は閉蓋状態での縦断側面図、（Ｂ）は（Ａ）のＢ－Ｂ視断面図、（Ｃ）は開蓋状態の縦断側面図、（Ｄ）は（Ａ）の要部拡大図である。Figures illustrating the first embodiment, (A) is a longitudinal side view with the lid closed, (B) is a BB sectional view of (A), (C) is a longitudinal side view with the lid open, ( D) is an enlarged view of the main part of (A). （Ａ）は第１実施形態の分離正面図、（Ｂ）は肉盗み用溝を設けている部位の拡大図、（Ｃ）は第２実施形態の正面図、（Ｄ）は第３実施形態の断面図、（Ｅ）は第４実施形態に係る肉盗み用溝の展開図である。(A) is an isolated front view of the first embodiment, (B) is an enlarged view of the portion where the meat stealing groove is provided, (C) is a front view of the second embodiment, and (D) is the third embodiment. (E) is a developed view of the meat-stealing groove according to the fourth embodiment. 第５実施形態を示す図で、（Ａ）は分離正面図、（Ｂ）は開蓋状態の縦断側面図、（Ｃ）は（Ｂ）のＣ－Ｃ視断面図である。FIG. 5 is a diagram showing the fifth embodiment, in which (A) is an isolated front view, (B) is a longitudinal side view with the lid open, and (C) is a cross-sectional view taken along line CC in (B). （Ａ）は第６実施形態の要部断面図、（Ｂ）は第７実施形態の要部断面図、（Ｃ）は第８実施形態の展開図、（Ｄ）は第９実施形態の展開図、（Ｅ）は第１０実施形態の開蓋状態の平面図である。(A) is a cross-sectional view of the main part of the sixth embodiment, (B) is a cross-sectional view of the main part of the seventh embodiment, (C) is a developed view of the eighth embodiment, and (D) is a developed view of the ninth embodiment. FIG. 3E is a plan view of the tenth embodiment in an open state.

次に、本願発明の実施形態を図面に基づいて説明する。各実施形態はヒンジキャップに適用している。以下及び図面の説明で方向を特定するため正面図、側面図の文言を使用しているが、ヒンジ３と反対側から見た方向を正面視方向として定義している。 Next, embodiments of the present invention will be described based on the drawings. Each embodiment is applied to a hinge cap. Although the words "front view" and "side view" are used below and in the description of the drawings to specify the direction, the direction seen from the side opposite to the hinge 3 is defined as the front view direction.

(1).第１実施形態の基本構造
まず、図１～図３（Ｂ）に示す第１実施形態を説明する。注出キャップはポリエチレンのような比較的軟質の合成樹脂製を材料にして射出成形法によって製造されており、本体１と上蓋２とヒンジ３とを備えている。なお、図２（Ｂ）（Ｃ）では、本体１と上蓋２とのハッチングの方向を変えている（図４（Ｂ）も同様である。）。 (1).Basic structure of the first embodiment First, the first embodiment shown in FIGS. 1 to 3(B) will be described. The pouring cap is manufactured by injection molding using a relatively soft synthetic resin such as polyethylene, and includes a main body 1, an upper lid 2, and a hinge 3. Note that in FIGS. 2(B) and 2(C), the direction of hatching between the main body 1 and the upper lid 2 is changed (the same applies to FIG. 4(B)).

本体１は、瓶口４に外側から密嵌する下向き外筒５と、瓶口４に内側から密嵌する下向き内筒６と、両者の上端に繋がった天板（頂壁）７とを備えており、天板７の一側部にヒンジ３を介して上蓋２が一体に繋がっている。ヒンジ３は、幅広のセンターヒンジ３ａと幅狭の一対のサイドヒンジ（フィルムヒンジ）２ｂとで構成されている。 The main body 1 includes a downward facing outer cylinder 5 that tightly fits into the bottle mouth 4 from the outside, a downward facing inner cylinder 6 that tightly fits into the bottle mouth 4 from the inside, and a top plate (top wall) 7 that is connected to the upper ends of both. An upper lid 2 is integrally connected to one side of the top plate 7 via a hinge 3. The hinge 3 includes a wide center hinge 3a and a pair of narrow side hinges (film hinges) 2b.

本体１の天板７には、その外周から少し入り込んだ状態で環状突起８が形成されている。環状突起８には外向きに突出した外向き係合部９が形成されている。一方、図２（Ｃ）に示すように、上蓋２における筒部の開口縁には、本体１の環状突起８が入り込む段部１０が形成されており、段部１０に、環状突起８の外向き係合部９と係合する内向き係合部１１が形成されている。 An annular protrusion 8 is formed on the top plate 7 of the main body 1 so as to extend slightly from the outer periphery thereof. The annular projection 8 is formed with an outward engaging portion 9 that projects outward. On the other hand, as shown in FIG. 2(C), a step 10 into which the annular projection 8 of the main body 1 enters is formed at the opening edge of the cylindrical portion of the upper lid 2. An inward engaging portion 11 that engages with the facing engaging portion 9 is formed.

上蓋２の筒部のうちヒンジ３と反対側の部位の下端（閉蓋状態での下端）には、開蓋に際して指先をかけるタブ１２を突設している。また、下向き外筒５及び天板７の外周面のうちヒンジ３と反対側の部位には、タブ１２への指かかりを良くするための指掛け凹所１３を形成している。タブ１２と指掛け用凹所１３との周方向の幅寸法は、ほぼ同じに設定されている。 At the lower end of the cylindrical portion of the upper lid 2 on the side opposite to the hinge 3 (the lower end in the closed state), a tab 12 is protrudingly provided, on which the fingertip is placed when opening the lid. Further, a finger-rest recess 13 is formed in a portion of the outer circumferential surface of the downward-facing outer cylinder 5 and the top plate 7 on the side opposite to the hinge 3 to make it easier for the finger to rest on the tab 12. The circumferential width dimensions of the tab 12 and the finger rest recess 13 are set to be approximately the same.

本体１を構成する下向き外筒５には、瓶口４の外向き環状凹所１４に係合する内向き環状突起１５を形成している。従って、本体１は、弾性変形を利用して瓶口４に強制嵌合（打栓）される。瓶口４の上端部の外周面は上窄まりのテーパ面になっている。これに対応して、下向き外筒５の上端部は軸心側に倒れた上傾斜面１６になっている。 The downwardly directed outer cylinder 5 constituting the main body 1 is formed with an inwardly directed annular projection 15 that engages with the outwardly directed annular recess 14 of the bottle mouth 4 . Therefore, the main body 1 is forcibly fitted (corked) into the bottle mouth 4 using elastic deformation. The outer circumferential surface of the upper end of the bottle mouth 4 is a tapered surface that tapers upward. Correspondingly, the upper end portion of the downward outer cylinder 5 has an upwardly inclined surface 16 that is inclined toward the axis.

本体１の天板７には、上向きに膨れたランド部１７が形成されている。ランド部１７は、ヒンジ３と反対側にずれた部位に向けて窄まるような山形を成しており、上面の全体が上向きに凹んだ曲面を成している。そして、ヒンジ３と反対側に位置して最も高くなった部位に、注出部の一例としてのノズル１８を突設している。従って、ノズル１８は、本体１の軸心挟んでヒンジ３と反対側にずれている。 A land portion 17 that swells upward is formed on the top plate 7 of the main body 1. The land portion 17 has a mountain shape that narrows toward the portion opposite to the hinge 3, and the entire upper surface thereof has an upwardly concave curved surface. A nozzle 18, which is an example of a spouting part, is provided in a protruding manner at the highest portion located on the opposite side of the hinge 3. Therefore, the nozzle 18 is shifted to the side opposite to the hinge 3 across the axis of the main body 1.

上蓋２の内底面には、閉蓋状態でノズル１８に密嵌するシール突起（中足）１９が突設されている。シール突起１９の先端部（閉蓋状態での下端部）は、瓶口４への嵌脱を容易にするため側面視で山形に形成されている。 A seal protrusion (middle leg) 19 is provided on the inner bottom surface of the upper lid 2 so as to fit tightly into the nozzle 18 when the lid is closed. The tip portion (lower end portion when the lid is closed) of the seal protrusion 19 is formed into a chevron shape when viewed from the side in order to facilitate fitting into and removal from the bottle opening 4.

(2).分別のための構造
図１（Ｃ）に示すように、本体１の天板７のうち環状突起８の外側の部位には、大まかに環状突起８の左側に位置した弱化用溝２１と、おおまかに環状突起８の右側に位置した肉盗み用溝２２とが、平面視で対向するような姿勢でかつ互いに繋がった状態で開口している。下向き外筒５のうち弱化用溝２１の下方の部位が、引き起し部になっている。 (2).Structure for separation As shown in Figure 1 (C), a weakening groove located roughly on the left side of the annular projection 8 is located on the outside of the annular projection 8 on the top plate 7 of the main body 1. 21 and a meat-stealing groove 22 located roughly on the right side of the annular protrusion 8 are opened so as to face each other in plan view and are connected to each other. A portion of the downward outer cylinder 5 below the weakening groove 21 is a raised portion.

弱化用溝２１は、ヒンジ３と指掛け用凹所１３との間に位置した第１弱化用溝（メイン弱化用溝）２１ａと、指掛け用凹所１３の箇所に位置した第２弱化用溝２１ｂと、ヒンジ３の箇所に位置した第３弱化用溝２１ｃで構成されており、全体として周方向に１８０°を越える範囲に延びている。 The weakening groove 21 includes a first weakening groove (main weakening groove) 21a located between the hinge 3 and the finger hook recess 13, and a second weakening groove 21b located at the finger hook recess 13. and a third weakening groove 21c located at the hinge 3, extending in the circumferential direction as a whole over a range of more than 180°.

弱化用溝２１（２１ａ，２１ｂ，２１ｃ）は下向き外筒５の内部まで入り込んでおり、その下端は、下向き外筒５の上傾斜面１６の下端近傍に位置している。このため、下向き外筒５のうち弱化用溝２１と上傾斜面１６とで挟まれた部位が周方向弱化線２３になっている。すなわち、第１弱化用溝２１ａの箇所には第１周方向弱化線２３ａが形成されて、第２弱化用溝２１ｂの箇所には第２周方向弱化線２３ｂが形成されて、第３弱化用溝２１ｃの箇所には第３周方向弱化線２３ｃが形成されており、第１～第３の周方向弱化線２３ａ～２３ｃは一体に連続している。 The weakening grooves 21 (21a, 21b, 21c) penetrate into the downward outer cylinder 5, and their lower ends are located near the lower end of the upper inclined surface 16 of the downward outer cylinder 5. Therefore, a portion of the downwardly directed outer cylinder 5 that is sandwiched between the weakening groove 21 and the upper inclined surface 16 forms a circumferential weakening line 23 . That is, the first circumferential weakening line 23a is formed at the first weakening groove 21a, the second circumferential weakening line 23b is formed at the second weakening groove 21b, and the third weakening line 23a is formed at the second weakening groove 21b. A third circumferential weakening line 23c is formed at the groove 21c, and the first to third circumferential weakening lines 23a to 23c are integrally continuous.

図１（Ｂ）（Ｃ）に示すように、天板７及び下向き外筒５のうちヒンジ３の右端に隣接した部位に、上向きと外向きとに開口した縦溝２４が形成されている。縦溝２４は下向き外筒５の下端近くまで延びており、縦溝２４の下方に引き千切り可能なブリッジ２５が形成されている。すなわち、引き起し部の始端が、ブリッジ２５を介して下向き外筒５の固定部に繋がっている。 As shown in FIGS. 1B and 1C, a vertical groove 24 that opens upward and outward is formed in a portion of the top plate 7 and the downward outer cylinder 5 adjacent to the right end of the hinge 3. The vertical groove 24 extends to near the lower end of the downward outer cylinder 5, and a bridge 25 that can be torn apart is formed below the vertical groove 24. That is, the starting end of the raised portion is connected to the fixed portion of the downward facing outer cylinder 5 via the bridge 25.

開蓋状態で上蓋２を斜め上向きに引っ張るとまずブリッジ２５が千切れ、次いで、上蓋２を左周り方向に引っ張ると、下向き外筒５は、第３周方向弱化線２３ｃ、第１周方向弱化線２３ａ、第２周方向弱化線２３ｂの順で引き裂かれていく。 When the top lid 2 is pulled diagonally upward in an open state, the bridge 25 is torn to pieces, and then when the top lid 2 is pulled counterclockwise, the downward outer cylinder 5 breaks down to the third circumferential weakening line 23c and the first circumferential weakening line. The line 23a and the second circumferential direction weakening line 23b are torn in this order.

第１～第３の弱化用溝２１ａ～２１ｃの下端は同じ深さになっているが、図２（Ａ）（Ｃ）（Ｄ）及び図３（Ａ）に示すように、第２弱化用溝２１ｂの箇所では外壁２６が半分程度の高さに切り欠かれている。これは、指掛け用凹所１３が存在することによって第２弱化用溝２１ｂの溝幅を狭くせざるを得ないため、金型うち第２弱化用溝２１ｂを形成する部分が薄くなって強度が低下する問題があることから、外壁２６の上部を切り欠くことにより、金型に強度が弱い部分ができることを回避したことに起因している。 The lower ends of the first to third weakening grooves 21a to 21c have the same depth, but as shown in FIGS. 2(A), 3(C), and 3(A), The outer wall 26 is cut out to about half the height at the groove 21b. This is because the groove width of the second weakening groove 21b has to be narrowed due to the presence of the finger hook recess 13, so the part of the mold where the second weakening groove 21b is formed becomes thinner and the strength is reduced. This is due to the fact that the upper part of the outer wall 26 is cut out to avoid forming a weak part in the mold.

そして、指掛け用凹所１３の箇所で外壁２６が切り欠かれていると、打栓後に容器に冷却等のためにシャワリングしたときに水が第２弱化用溝２１ｂに侵入するおそれがあるが、これを防止するために、上蓋２に、外壁２６に上から当接する舌片２７を下向きに突設している。充填後にシャワリングしない場合は、舌片２７を設ける必要はない。 If the outer wall 26 is cut out at the finger hook recess 13, there is a risk that water may enter the second weakening groove 21b when the container is showered for cooling after capping. In order to prevent this, the upper lid 2 is provided with a tongue piece 27 that projects downward and contacts the outer wall 26 from above. If you do not shower after filling, it is not necessary to provide the tongue piece 27.

肉盗み用溝２２は第２弱化用溝２１ｂと連続しているが、図３（Ｂ）に示すように、深さは弱化用溝２１よりも浅くなっている。従って、下向き外筒５の上傾斜面１６と肉盗み用溝２２との間の部位は、引っ張っても破断しない厚さになっている。肉盗み用溝２２の深さＨ１は、例えば、弱化用溝２１の深さＨ２の８０～５０％に設定できる。 The meat stealing groove 22 is continuous with the second weakening groove 21b, but as shown in FIG. 3(B), the depth is shallower than the weakening groove 21. Therefore, the portion between the upper inclined surface 16 and the meat-stealing groove 22 of the downward facing outer cylinder 5 has a thickness that will not break even if it is pulled. The depth H1 of the meat stealing groove 22 can be set to, for example, 80 to 50% of the depth H2 of the weakening groove 21.

(3).まとめ
以上の構成において、ボトルの内容物を消費しきってから注出キャップとボトルとを分別するに際しては、既述のとおり、開蓋状態で上蓋２を斜め上向きに引っ張ってまずブリッジ２５が千切り、次いで、図１（Ｃ）に矢印Ｆで示すように、上蓋２を左周り方向に引っ張って、第３周方向弱化線２３ｃ、第１周方向弱化線２３ａ、第２周方向弱化線２３ｂの順で千切っていく（引き裂いていく）。 (3).Summary In the above configuration, when separating the dispensing cap from the bottle after the contents of the bottle have been consumed, first pull the top lid 2 diagonally upward with the lid open, and then 25 is cut into strips, and then, as shown by the arrow F in FIG. Cut into strips (tear) in the order of line 23b.

すると、肉盗み用溝２２の箇所では下向き外筒５は千切れないため、第２周方向弱化線２３ｂが引き裂かれきると破断はそこで停止して、引っ張り力は肉盗み用溝２２の始端部に集中する。このため、下向き外筒５に対して強い引っ張り力が掛かって、下向き外筒５と下向き内筒６とが瓶口４から離脱する。これにより、注出キャップを瓶口４から取り外される。 Then, since the downward outer cylinder 5 is not torn to pieces at the meat-stealing groove 22, when the second circumferential direction weakening line 23b is completely torn, the breakage stops there, and the tensile force is applied to the starting end of the meat-stealing groove 22. concentrate. Therefore, a strong tensile force is applied to the downward outer cylinder 5, and the downward outer cylinder 5 and the downward inner cylinder 6 are separated from the bottle mouth 4. Thereby, the pouring cap is removed from the bottle mouth 4.

本実施形態では、第３弱化用溝２１及び第３周方向弱化線２３ｃの始端はヒンジ３の右端の箇所に位置しているが、指掛け用凹所１３の箇所に第２弱化用溝２１ｂ及び第２周方向弱化線２３ｂが形成されているため、弱化用溝２１及び周方向弱化線２３を設けた範囲は、１８０°を越えた角度θに大きく広がっている。このため、瓶口４に対する下向き外筒５の係合力を弱めて、瓶口４からの注出キャップの抜き外しを簡単に行える。 In this embodiment, the starting ends of the third weakening groove 21 and the third circumferential weakening line 23c are located at the right end of the hinge 3, but the second weakening groove 21b and the starting end of the third weakening groove 21 and the third circumferential weakening line 23c are located at the right end of the hinge 3. Since the second circumferential weakening line 23b is formed, the range in which the weakening groove 21 and the circumferential weakening line 23 are provided is greatly expanded to an angle θ exceeding 180°. Therefore, the engagement force of the downward outer cylinder 5 with the bottle spout 4 is weakened, and the spouting cap can be easily removed from the bottle spout 4.

さて、実施形態の場合、注出キャップの抜き取りに際しては、一般に、左手でボトルを掴持して右手で上蓋２を引っ張ることになり、ボトルを図１（Ｃ）に矢印２８で示す方向から掴持するのが普通である。そして、指掛け用凹所１３の箇所が破断不能な溝無し部になっていると、周方向弱化線２３は周方向に大凡１８０°の範囲で広がるため、力の作用点は注出キャップを二分する中心線Ｏの外側（左手と反対側）に位置する。 Now, in the case of the embodiment, when removing the pouring cap, the user generally grasps the bottle with the left hand and pulls the top lid 2 with the right hand, and the bottle is grasped from the direction shown by the arrow 28 in FIG. It is normal to have If the finger hook recess 13 is an unbreakable grooveless part, the circumferential weakening line 23 spreads in the circumferential direction in a range of approximately 180°, so the point of force application bisects the spouting cap. It is located outside the center line O (on the opposite side from the left hand).

その結果、周方向弱化線２３を引き裂いた後の引っ張り力は矢印２９で示すように作用して、下向き外筒５を人の左手から離そうとする。このため、人はボトルが左手から離れないように、左手でボトルをしっかりと掴持しておらねばならず、すると、消費者に負担がかかる。 As a result, the tensile force after tearing the circumferential weakening line 23 acts as shown by the arrow 29 and tends to separate the downward facing outer cylinder 5 from the person's left hand. Therefore, the person must firmly grip the bottle with the left hand so that the bottle does not leave the left hand, which places a burden on the consumer.

これに対して本実施形態のように指掛け用凹所１３の箇所に第２弱化用溝２１ｂ及び第２周方向弱化線２３ｂを設けると、周方向弱化線２３を設けた範囲は１８０°よりも遥かに大きい角度θになって、引っ張り力の作用点は注出キャップを二分する中心線Ｏの内側（左手に近い側）に位置するため、引っ張り力が、矢印３０で示すように、注出キャップを左手に近づけるように作用する。従って、人はボトルを必要以上にしっかかりと掴持している必要はなくて、注出キャップの抜き取り（下向き内筒６の抜き取り）に要する力を軽減できる。 On the other hand, if the second weakening groove 21b and the second circumferential weakening line 23b are provided at the finger hook recess 13 as in this embodiment, the range where the circumferential weakening line 23 is provided is less than 180°. Since the angle θ is much larger and the point of application of the pulling force is located inside the center line O that bisects the dispensing cap (on the side closer to the left hand), the pulling force It acts to move the cap closer to the left hand. Therefore, the person does not have to hold the bottle more firmly than necessary, and the force required to remove the pouring cap (remove the downward inner cylinder 6) can be reduced.

また、肉盗み用溝２２は弱化用溝２１よりも浅いため、下向き外筒５の強度が低下し過ぎることを防止して、打栓不良を低減できる。実施形態では、肉盗み用溝２２の深さＨ１を弱化用溝２１の深さＨ２の７０～８０％に設定しているが、この程度の割合に設定すると、弱化用溝２１と肉盗み用溝２２との箇所で下向き外筒５の圧縮強度を実質的に同じに保持しつつ、肉盗み用溝２２の箇所での破断を防止できる。 Moreover, since the meat-stealing groove 22 is shallower than the weakening groove 21, it is possible to prevent the strength of the downward-facing outer cylinder 5 from decreasing too much and reduce plugging defects. In the embodiment, the depth H1 of the meat-stealing groove 22 is set to 70 to 80% of the depth H2 of the weakening groove 21, but when set to this ratio, the weakening groove 21 and the depth H2 of the weakening groove 21 While maintaining the compressive strength of the downward outer cylinder 5 substantially the same at the location with the groove 22, breakage at the location of the meat stealing groove 22 can be prevented.

(4).他の実施形態
次に、図３（Ｃ）以下に示す他の実施形態を説明する。図３（Ｃ）に示す第２実施形態では、指掛け用凹所１３の箇所に設けて第２弱化用溝２１ｂを、肉盗み用溝２２に向けて高さが徐々に高くなるように傾斜させている。従って、第２周方向弱化線２３ｂの厚さは肉盗み用溝２２に向けて厚くなっている。 (4).Other embodiments Next, other embodiments shown in FIG. 3(C) and below will be described. In the second embodiment shown in FIG. 3(C), the second weakening groove 21b is provided at the location of the finger hook recess 13 and is inclined so that the height gradually increases toward the meat stealing groove 22. ing. Therefore, the thickness of the second circumferential weakening line 23b becomes thicker toward the thinning groove 22.

図３（Ｄ）に示す第２では、肉盗み用溝２２は弱化用溝２１と同じ深さに設定しつつ、下端部の内側面を下に向けて外側にずれる下傾斜面２２ａに形成することにより、下向き外筒５の上傾斜面１６と肉盗み用溝２２の下傾斜面２２ａとの間を破断不能部と成している。この実施形態では、弱化用溝２１の断面積と肉盗み用溝２２の断面積とは殆ど同じになるので、強度の一定化機能に優れている。 In the second example shown in FIG. 3(D), the meat stealing groove 22 is set to the same depth as the weakening groove 21, and is formed into a downwardly inclined surface 22a with the inner surface of the lower end facing downward and shifting outward. As a result, an unbreakable portion is formed between the upper inclined surface 16 of the downward outer cylinder 5 and the lower inclined surface 22a of the meat-stealing groove 22. In this embodiment, since the cross-sectional area of the weakening groove 21 and the cross-sectional area of the thinning groove 22 are almost the same, the strength is excellent in a constant function.

図３（Ｅ）に第３実施形態では、肉盗み用溝２２は、弱化用溝２１より浅い部分２２ｂと弱化用溝２１と同じ深さの部分２２ｃとが交互に連続した形態になっている。この場合は、弱化用溝２１よりも浅い部分２２ｂでは下向き外筒５は破断不能になるため、弱化用溝２１と同じ深さの部分２２ｃがあっても、肉盗み用溝２２の箇所で下向き外筒５が引き裂かれることはない。 In the third embodiment shown in FIG. 3(E), the meat-stealing groove 22 has a form in which a portion 22b shallower than the weakening groove 21 and a portion 22c having the same depth as the weakening groove 21 are alternately continuous. . In this case, the downward facing outer cylinder 5 cannot be broken in the part 22b shallower than the weakening groove 21, so even if there is a part 22c having the same depth as the weakening groove 21, the downward facing outer cylinder 5 cannot be broken in the part 22b shallower than the weakening groove 21. The outer cylinder 5 will not be torn.

図４に示す第４実施形態は、プルタブによって開封するタイプにて適用している。すなわち、この実施形態では、天板７に閉鎖板３１を一体に設けて、閉鎖板３１に薄肉部（スコア）３２で囲われた開封部３３を形成し、開封部３３のうちヒンジ３に近い部位に、柱３４ａを介してリング状のプルタブ３４を一体に設けている。また、天板７には注出筒３５を一体に設けており、上蓋２には、注出筒３５に嵌入する中足３６を設けている。 The fourth embodiment shown in FIG. 4 is of a type that is opened using a pull tab. That is, in this embodiment, a closing plate 31 is integrally provided on the top plate 7, an opening portion 33 surrounded by a thin wall portion (score) 32 is formed on the closing plate 31, and a portion of the opening portion 33 that is close to the hinge 3 is formed on the closing plate 31. A ring-shaped pull tab 34 is integrally provided at the portion via a pillar 34a. Further, the top plate 7 is integrally provided with a pouring tube 35, and the upper lid 2 is provided with a middle leg 36 that fits into the pouring tube 35.

この実施形態では、指掛け用凹所１３の箇所には弱化用溝２１は形成されておらず、いわば、第１実施形態の外壁２６を完全に除去した状態になっている。従って、下向き外筒５のうち指掛け用凹所１３を設けた部位には第２周方向弱化線２３ｂのみが形成されている。肉盗み用溝２２は、図３（Ｄ）の形態を採用しているが、第１実施形態のように深さを浅くした方式も採用できる。 In this embodiment, the weakening groove 21 is not formed at the location of the finger hook recess 13, so that the outer wall 26 of the first embodiment is completely removed. Therefore, only the second circumferential direction weakening line 23b is formed in the portion of the downward outer cylinder 5 where the finger hook recess 13 is provided. Although the meat-stealing groove 22 adopts the form shown in FIG. 3(D), a method in which the depth is made shallow as in the first embodiment can also be adopted.

この実施形態では、指掛け用凹所１３の箇所には弱化用溝は存在しないため、金型の強度が部分的に低下することはない。また、指掛け用凹所１３の箇所に弱化用溝は存在しないため、打栓後のシャワリングに際して水が溜まるといった問題もない。周方向弱化線２３は第１実施形態と同様に１８０°以上の角度で広がっているため、第１実施形態と同様に注出キャップの取り外しは容易である。 In this embodiment, since there is no weakening groove at the finger hook recess 13, the strength of the mold does not partially decrease. Further, since there is no weakening groove at the finger hook recess 13, there is no problem of water accumulating during showering after plugging. Since the circumferential weakening line 23 extends at an angle of 180° or more as in the first embodiment, the pouring cap can be easily removed as in the first embodiment.

図５（Ａ）に示す第６実施形態及び図５（Ｂ）に示す第７実施形態では、肉盗み用溝２２の深さはごく浅く設定している。第６実施形態では、肉盗み用溝２２は正四角形の断面形状になって、第７実施形態では、肉盗み用溝２２は逆台形の断面形状になっている。三角形（Ｖ形）や円弧状、Ｕ形の断面形状も採用できる。 In the sixth embodiment shown in FIG. 5(A) and the seventh embodiment shown in FIG. 5(B), the depth of the meat stealing groove 22 is set to be very shallow. In the sixth embodiment, the meat-stealing groove 22 has a square cross-sectional shape, and in the seventh embodiment, the meat-stealing groove 22 has an inverted trapezoidal cross-section. A triangular (V-shaped), arcuate, or U-shaped cross-sectional shape can also be adopted.

これら第６，７実施形態の肉盗み用溝２２は、成形後に天板７の上面又は外周面や下向き外筒５の外周面にヒケが発生することを防止する（或いはヒケを隠す）機能を主としている。第６，７の実施形態は、図４の実施形態のように本体１の自由端部に溝無しで第２周方向弱化２３ｂを形成した態様にも適用できる。第６，７実施形態から理解できるように、請求項１，４では、肉盗み用溝２２は必ずしも打栓時の強度均等化機能を備えていなくてもよい。 The meat stealing grooves 22 of the sixth and seventh embodiments have the function of preventing sink marks from occurring on the upper surface or outer peripheral surface of the top plate 7 or the outer peripheral surface of the downward facing outer cylinder 5 after molding (or hiding the sink marks). I am the lord. The sixth and seventh embodiments can also be applied to an embodiment in which the second circumferential weakening 23b is formed in the free end of the main body 1 without a groove, as in the embodiment of FIG. As can be understood from the sixth and seventh embodiments, in claims 1 and 4, the meat stealing groove 22 does not necessarily have to have a strength equalizing function during plugging.

図５（Ｃ）に示す第８実施形態では、肉盗み用溝２２は、全体として弱化用溝２１よりも浅い深さとしつつ、深さが周方向に交互に変化するように設定している。他方、図５（Ｄ）に示す第９実施形態では、互いに独立した穴３７の群を周方向に断続的に並べることによって肉盗み用溝２２と成している。本願発明の肉盗み用溝２２は、図５（Ｄ）の形態も含んでいる。 In the eighth embodiment shown in FIG. 5(C), the meat-stealing grooves 22 are set to have an overall depth shallower than the weakening grooves 21, and the depths are set to alternately change in the circumferential direction. On the other hand, in the ninth embodiment shown in FIG. 5(D), the meat-stealing groove 22 is formed by arranging groups of mutually independent holes 37 intermittently in the circumferential direction. The meat stealing groove 22 of the present invention also includes the form shown in FIG. 5(D).

図５（Ｄ）に示す第１０実施形態は請求項７を具体化したもので、弱化用溝２１の終端は指掛け凹所１３の近傍で止まっており、指掛け凹所１３が形成されている自由端部５ａは破断不能になっている。そして、天板７の上面のうち指掛け凹所１３を挟んで弱化用溝２１と反対側の部位に、ヒケ防止を目的する穴３７の群を断続して多数形成している。 The tenth embodiment shown in FIG. 5(D) embodies claim 7, in which the terminal end of the weakening groove 21 stops near the finger-holding recess 13, and the finger-holding recess 13 is formed freely. The end portion 5a is unbreakable. A large number of groups of holes 37 for the purpose of preventing sink marks are formed intermittently on the upper surface of the top plate 7 on the opposite side of the weakening groove 21 with the finger rest 13 interposed therebetween.

この場合、穴３７の周方向の幅と、隣り合った穴３７の間隔とは同じ程度に設定しているが、一方を他方より大きくすることは可能である。また、各穴３７の深さは、弱化用溝２１の深さよりは浅くなっており、例えば図５（Ａ）（Ｂ）に示した程度の深さか、弱化用溝２１の深さの半分程度になっている（弱化用溝２１の深さの３～７割程度でよいと云える。）。 In this case, the width of the hole 37 in the circumferential direction and the interval between adjacent holes 37 are set to be approximately the same, but it is possible to make one larger than the other. Further, the depth of each hole 37 is shallower than the depth of the weakening groove 21, for example, the depth shown in FIGS. 5(A) and 5(B), or about half the depth of the weakening groove 21. (It can be said that about 30 to 70% of the depth of the weakening groove 21 is sufficient.)

軸心を挟んで弱化用溝２１と反対側の部位は非破断部になっているが、この非破断部にある程度の深さの穴３７の群が存在することにより、成型後の収縮を吸収して、天板７の上面や外周面、下向き外筒５の外周面にヒケが現れることを防止できる。従って、美麗な外観を保持できる。図５（Ｅ）の実施形態では、自由端部５ａは非破断部になっているが、自由端部５ａに図４のような第２周方向弱化線２３ｂを形成してもよい。 The part on the opposite side of the weakening groove 21 across the axis is a non-breakable part, but the presence of a group of holes 37 of a certain depth in this non-breakable part absorbs shrinkage after molding. As a result, it is possible to prevent sink marks from appearing on the upper surface and outer peripheral surface of the top plate 7 and the outer peripheral surface of the downward facing outer cylinder 5. Therefore, a beautiful appearance can be maintained. In the embodiment shown in FIG. 5E, the free end portion 5a is an unbroken portion, but a second circumferential weakening line 23b as shown in FIG. 4 may be formed on the free end portion 5a.

以上、本願発明の実施形態を説明したが、本願発明は他にも様々に具体化できる。例えば、肉盗み用溝を２列形成することも可能である。 Although the embodiments of the present invention have been described above, the present invention can be embodied in various other ways. For example, it is also possible to form two rows of meat stealing grooves.

本願発明は、合成樹脂製の注出キャップに具体化できる。従って、産業上利用できる。 The present invention can be embodied in a pouring cap made of synthetic resin. Therefore, it can be used industrially.

１本体
２上蓋
３ヒンジ
４瓶口
５下向き外筒
６下向き内筒
７天板
１２タブ
１３指掛け用凹所
１８注出部の一例としてのノズル
２１，２１ａ～２１ｃ弱化用溝
２２肉盗み用溝
２３，２３ａ～２３ｃ周方向弱化線
２４縦溝
２５ブリッジ
２６指掛け用凹所の箇所で第２弱化用溝を形成する外壁
２７舌片
３１注出部を構成する閉鎖板
３４注出部を構成するプルタブ
３５注出部を構成する注出筒 1 Main body 2 Top lid 3 Hinge 4 Bottle mouth 5 Downward outer cylinder 6 Downward inner cylinder 7 Top plate 12 Tab 13 Recess for finger rest 18 Nozzle as an example of spouting part 21, 21a to 21c Weakening groove 22 Meat stealing groove 23 , 23a to 23c Circumferential weakening line 24 Vertical groove 25 Bridge 26 Outer wall forming a second weakening groove at the finger hook recess 27 Tongue 31 Closing plate forming the spouting part 34 Pull tab forming the spouting part 35 Dispensing cylinder constituting the dispensing section

Claims

Comprising a main body that fits into the mouth of the bottle with a stopper, and a top lid that covers the main body,
The main body includes a top plate located above the bottle spout, a downwardly directed outer cylinder that hangs down from the top plate and fits onto the outer circumferential surface of the bottle spout, and a pouring part provided on the top plate. A pouring cap made of synthetic resin, in which the outer cylinder is formed with a circumferential weakening line that tears the downward-facing outer cylinder in the circumferential direction to facilitate removal from the bottle mouth,
A weakening groove for forming the circumferential weakening line and a meat-stealing groove that holds the downwardly directed outer cylinder in an untearable manner extend in the circumferential direction in a continuous manner on the upper surface of the top plate. It is open to
Pour cap made of synthetic resin.

The main body and the top lid are integrally connected via a bendable hinge,
A starting end of the pulling-up portion of the downward outer cylinder including the circumferential weakening line is integrally connected to other parts of the downward outer cylinder via an auxiliary weakened part that can be torn to pieces, integrally connected to the hinge;
The synthetic resin pouring cap according to claim 1.

A tab for opening the lid is provided protruding from the lower end of a portion of the outer peripheral surface of the upper lid located on the opposite side of the hinge, and a tab for opening the lid is provided on a portion of the outer peripheral surface of the main body opposite to the hinge, below the tab. A recess for opening the lid is formed.
The weakening groove is composed of a first circumferential weakening line provided in one area with the finger hook recess in between, and a second circumferential weakening line provided at the finger hook recess, and The usage groove is formed in the other area across the finger rest recess,
The synthetic resin pouring cap according to claim 2.

It comprises a main body that fits into the mouth of the bottle with a stopper, and a top lid that is connected to the main body via a bendable hinge,
A tab for opening the lid is provided protruding from the lower end of a portion of the outer peripheral surface of the upper lid located on the opposite side from the hinge;
The main body includes a top plate located above the bottle spout, a downwardly directed outer cylinder that hangs down from the top plate and fits onto the outer circumferential surface of the bottle spout, and a pouring part provided on the top plate. a finger-rest recess for opening the lid located below the tab is formed on the outer circumferential surface of the downward-facing outer cylinder on a side opposite to the hinge;
and a pouring cap made of synthetic resin, in which a circumferential weakening line is formed on the downward outer cylinder to tear the downward outer cylinder in the circumferential direction to facilitate removal from the bottle mouth,
A weakening groove for forming a first circumferential weakening line is opened in one part of the upper surface of the top plate across the finger recess so as to extend in the circumferential direction. A meat-stealing groove that holds the outer cylinder in an untearable manner is opened at the other part across the finger hook recess,
A second circumferential weakening line, which is thinned without providing an upward groove, is formed in a continuous state with the first circumferential weakening line at the finger hook recess in the downward outer cylinder.
Pour cap made of synthetic resin.

By making the meat-stealing groove shallower than the weakening groove, the downwardly directed outer cylinder is held at the portion of the meat-stealing groove so that it cannot be torn.
A pouring cap made of synthetic resin according to any one of claims 1 to 4.

The depth of the thinning groove is set to be the same as the weakening groove, and the wall thickness between the inner circumferential surface of the lower end of the thinning groove and the inner circumferential surface of the downward facing outer cylinder is broken. set to an impossible thickness,
A pouring cap made of synthetic resin according to any one of claims 1 to 4.

It comprises a main body that fits into the mouth of the bottle with a stopper, and a top lid that is connected to the main body via a bendable hinge,
A tab for opening the lid is provided protruding from the lower end of a portion of the outer peripheral surface of the upper lid located on the opposite side from the hinge;
The main body includes a top plate located above the bottle spout, a downwardly directed outer cylinder that hangs down from the top plate and fits onto the outer circumferential surface of the bottle spout, and a pouring part provided on the top plate. a finger-rest recess for opening the lid located below the tab is formed on the outer circumferential surface of the downward-facing outer cylinder on a side opposite to the hinge;
and a pouring cap made of synthetic resin, in which a circumferential weakening line is formed on the downward outer cylinder to tear the downward outer cylinder in the circumferential direction to facilitate removal from the bottle mouth,
A weakening groove for forming the circumferential direction weakening line is opened in one part of the upper surface of the top plate across the finger rest recess so as to extend in the circumferential direction, and the finger rest of the top plate is provided with a weakening groove extending in the circumferential direction. On the other side of the recess, a group of holes having a depth shallower than the fracture groove are disposed intermittently in the circumferential direction, or a groove shallower than the fracture groove is circumferentially arranged. long formed,
Pour cap made of synthetic resin.