JP2002046755A - Container mouth section and cap - Google Patents

Container mouth section and cap

Info

Publication number
JP2002046755A
JP2002046755A JP2000237957A JP2000237957A JP2002046755A JP 2002046755 A JP2002046755 A JP 2002046755A JP 2000237957 A JP2000237957 A JP 2000237957A JP 2000237957 A JP2000237957 A JP 2000237957A JP 2002046755 A JP2002046755 A JP 2002046755A
Authority
JP
Japan
Prior art keywords
cap
gradient
container
container mouth
guide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2000237957A
Other languages
Japanese (ja)
Other versions
JP4737351B2 (en
Inventor
Hiroo Ikegami
Tsunehisa Namiki
恒久 並木
裕夫 池上
Original Assignee
Toyo Seikan Kaisha Ltd
東洋製罐株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toyo Seikan Kaisha Ltd, 東洋製罐株式会社 filed Critical Toyo Seikan Kaisha Ltd
Priority to JP2000237957A priority Critical patent/JP4737351B2/en
Publication of JP2002046755A publication Critical patent/JP2002046755A/en
Application granted granted Critical
Publication of JP4737351B2 publication Critical patent/JP4737351B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To provide a combination of a container mouth section and a cap, wherein the opening/closing of the cap can be performed by an extremely simple operation, the fitting is hard to get loose under a closed state of the container, and a stable and firm sealing property is guaranteed, and in addition, to provide a cap low in height. SOLUTION: A sealing mechanism section between this container mouth section and the cap member which is fitted on the mouth section has a configuration wherein sealing between the end surface of the container mouth section and the cap top plate is achieved by a plurality of sets of spiral guides and other independent protuberances. In this case, the plurality of sets of the spiral guides are formed on the outer peripheral surface of the cylinder of the container mouth section, or the inner peripheral surface of the skirt section of the cap. The independent protuberance is provided on the other member. The spiral guide is provided to have a low gradient of a degree of a one-line thread in the vicinity of the closing final end of the cap, and to have a high gradient at the section which continues form the closing final end of the cap.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【0001】[0001]
【発明の属する技術分野】本発明は、瓶等の容器の口部
と該容器の封止のために組み合わされるキャップに関す
るものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cap combined with a mouth of a container such as a bottle for sealing the container.
【0002】[0002]
【従来の技術】従来、容器口部と該口部に対し取り外し
可能に嵌合されたキャップ部材間の容器封止機構は、図
10に示されるような一般に円筒状の容器口部1外周に螺
旋状につけられた凸条4と、天板21と該天板周縁部から
垂下した円筒状スカート部からなるキャップ2の内周面
に螺旋状につけられた凸条間の凹部3とが螺合する形態
となっている。この種の容器の嵌合部には一般にタンパ
ー・エビデント・バンド(tamper evident band)5と呼
ばれている開封履歴明示機構がついていて、これは工場
から出荷後消費者がキャップ2を開く前にキャップ2が
空けられた場合には前記タンパー・エビデント・バンド
5が切断されその事実が明示される機構である。このタ
ンパー・エビデント・バンドには二種類の形態があり、
一方はキャップが許容範囲を越えて回転変位されたとき
に切れるタイプ、他方はキャップが回転にともない許容
範囲を越えて口部軸方向に変位したとき切れるタイプで
ある。キャップの変位が許容範囲内であった場合にはこ
のタンパー・エビデント・バンドは切れないことを受
け、その範囲の変位中は内容物のシールが確保される必
要がある。図10に示すような容器口部1外周に螺旋状に
つけられた凸条4とキャップ2の内周面に螺旋状につけ
られた凸条間の凹部3とが螺合する容器封止機構におい
ては、キャップの回転変位はその螺旋勾配に対応した口
部軸方向変位をともなう。したがってタンパー・エビデ
ント・バンド5が許容する変位分については、それに基
づく液漏れを防止するため図10Cに示すようなその範囲
をカバーする高さをもったインナーリング8,アウター
リング9をキャップ天板21に設けるなどの対応策が取ら
れいる。
2. Description of the Related Art Conventionally, a container sealing mechanism between a container mouth and a cap member detachably fitted to the mouth is shown in FIG.
An inner peripheral surface of a cap 2 composed of a ridge 4 spirally provided on the outer periphery of a generally cylindrical container opening 1 as shown in FIG. 10, a top plate 21 and a cylindrical skirt portion hanging down from the periphery of the top plate. And the concave portion 3 between the ridges provided in a spiral shape is screwed. The fitting portion of this type of container is provided with an opening history indicating mechanism generally called a tamper evident band 5, which is provided before the consumer opens the cap 2 after shipping from the factory. When the cap 2 is opened, the tamper-evident band 5 is cut and the fact is clearly shown. There are two types of tamper evidence bands,
One is a type that is cut when the cap is rotationally displaced beyond the allowable range, and the other is a type that is cut when the cap is displaced in the axial direction of the mouth beyond the allowable range due to rotation. If the displacement of the cap is within the allowable range, the tamper-evident band is not cut off, and the contents must be sealed during the displacement within the range. As shown in FIG. 10, in a container sealing mechanism in which a ridge 4 spirally attached to the outer periphery of the container mouth 1 and a concave portion 3 between the ridges spirally attached to the inner peripheral surface of the cap 2 are screwed. The rotational displacement of the cap is accompanied by axial displacement in the mouth corresponding to the spiral gradient. Therefore, the displacement of the tamper-evident band 5 is allowed. To prevent liquid leakage based on the displacement, the inner ring 8 and the outer ring 9 having a height covering the range as shown in FIG. Countermeasures such as setting up at 21 are taken.
【0003】さて、この種容器の主流は密封性の観点か
ら低勾配の1条ネジが採用されている。これによって安
定堅実なシールが確保できるのであるが、キャップを開
けるために多くの回転変位を要し何度か握り直しをして
開閉するという不便を伴う。そこでワンタッチで開閉が
できる使い勝手のよい高勾配の多条ネジ形態のキャップ
の使用もみられるが、これは使い勝手のよい反面、高勾
配のためネジの緩みが生じ易い構造上の欠点を持ち密封
性の点で難がある。また、キャップについてはコスト面
から低キャップハイト化(キャップの天板からスカート
裾部までの距離)が望まれているところである。
The mainstream of this type of container employs a low-gradient single thread from the viewpoint of sealing performance. As a result, a stable and secure seal can be ensured, but there is the inconvenience of requiring a large amount of rotational displacement to open the cap and re-holding several times to open and close. Therefore, the use of a high-profile multi-threaded screw cap that can be opened and closed with a single touch has also been seen. There is difficulty in point. Further, for the cap, it is desired to reduce the height of the cap (the distance from the top plate of the cap to the skirt hem) from the viewpoint of cost.
【0004】[0004]
【発明が解決しようとする課題】本発明の課題は、上記
の問題点を解決したもの、すなわち、ワンタッチ操作に
よるキャップの開閉が可能であり、かつ容器の閉止状態
において嵌合の緩みが生じ難く安定堅実な密封性を保証
する容器口部とキャップの組合せを提供すること、更に
はキャップハイトの低いキャップを提供することにあ
る。
SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, that is, it is possible to open and close the cap by one-touch operation, and it is difficult to loosen the fitting when the container is closed. An object of the present invention is to provide a combination of a container mouth portion and a cap which ensures a stable and tight sealing property, and further to provide a cap having a low cap height.
【0005】[0005]
【課題を解決するための手段】本発明における容器口部
と該口部に嵌合されるキャップ部材間の封止機構部は、
容器口部端面部とキャップ天板部間のシールが、容器口
部の円筒外周面またはキャップのスカート部内周面に形
成された複数組みの螺旋案内と他方に設けられた独立突
起の係合案内によって達成される形態であって、前記螺
旋案内はキャップの閉止終端部近辺では一条ネジ程度の
低勾配に、それに連続する部分では高勾配を持つように
設けるようにした。
According to the present invention, a sealing mechanism between a container mouth and a cap member fitted to the mouth is provided.
The seal between the end face of the container mouth and the cap top plate is formed by a plurality of sets of spiral guides formed on the cylindrical outer peripheral surface of the container mouth or the inner peripheral surface of the skirt of the cap, and the engagement guide of the independent projection provided on the other side. The spiral guide is provided so as to have a low gradient near the closing end of the cap, such as a single thread, and a high gradient in a portion continuous therewith.
【0006】[0006]
【発明の実施の形態】本発明はキャップを開け閉めする
のに途中で握りを変えて何回かキャップを回していたも
のを、少ない回転変位で簡単に開け閉めしたいというこ
とに出発があり、そのためには螺合関係にある容器口部
とキャップに設ける螺旋の傾斜角を大きくすればよいこ
とになる。ところが、単純にそうした場合には閉止終端
部近辺での若干の回転変位でも相当分の口部軸方向変位
を伴うことにより、閉止終端部まできっちりと閉めない
と漏れが生じるし、閉止終端部で密封閉止状態を確保し
ても緩みによる若干の回転変位で容器口端部とキャップ
天板部間に隙間を生じてしまうため、使用前や使用中の
液漏れが予想されるといった問題が生じる。そこで、本
発明では閉止終端部ではシールの安定堅実性を確保する
べくこの近辺での回転変位に対しては軸方向の変位をで
きる限り小さくし、それに連続する部分でキャップの急
速な開放を確保すべく回転変位に対する軸方向の変位を
大きくすることに想到したのであるが、このような非線
形特性は従来の一定傾斜角の一条ネジや多条ネジ形態の
容器封止機構には不可能なことである。そこで、本発明
はこの非線形ガイド機構として、位置に応じ傾斜角を異
にする案内部材とその案内部材と係合する独立突起との
組合せを採用し、図1に展開して示すように少なくとも
閉止終端部近辺では案内の傾斜を一条ネジに相当する低
勾配とし、それに続く部分で高勾配とすることに想到し
た。なお図における曲線は案内部材の中央位置を示すも
のである。
DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention is based on the desire to easily open and close the cap with a small rotational displacement, while changing the grip in the middle of opening and closing the cap several times. For that purpose, the inclination angle of the spiral provided on the container mouth portion and the cap which are screwed with each other should be increased. However, in such a case, even a slight rotational displacement in the vicinity of the closing end is accompanied by a considerable amount of axial displacement in the mouth, so that leakage occurs unless the closing end is closed tightly. Even if the hermetically closed state is ensured, a slight rotational displacement due to loosening will cause a gap between the end of the container mouth and the top plate of the cap, causing a problem that liquid leakage before or during use is expected. Therefore, in the present invention, the axial displacement is minimized with respect to the rotational displacement in the vicinity of the closing end portion in order to secure a stable and stable seal, and the rapid opening of the cap is ensured in a continuous portion thereof. We conceived to increase the axial displacement with respect to the rotational displacement as much as possible, but such non-linear characteristics are not possible with a conventional single-thread or multi-thread container sealing mechanism with a constant inclination angle. It is. Therefore, the present invention employs a combination of a guide member having a different inclination angle depending on the position and an independent projection engaged with the guide member as the nonlinear guide mechanism, and at least closes as shown in FIG. It has been conceived that the inclination of the guide is set to a low gradient corresponding to a single thread near the end portion, and to a high gradient in a portion subsequent thereto. Note that the curve in the figure indicates the center position of the guide member.
【0007】この非線形案内機構としてはまず図2に示
すようなピン状の独立突起22と低勾配部32と高勾配部31
とからなる非線形勾配の螺旋溝3を組み合わせた形態の
ものに想到した。これは独立突起22が細いピン状である
ため非線形の溝3内を自在に移動できる機能を有するも
のである。ところがこの形態のものはキャップの閉止状
態においてシール圧がピンに集中して負荷となるという
構造上の問題を抱えている。以下に瓶形状容器のピンと
溝の組合せ形式のキャップにおける耐圧試験のデータを
示す。図8に、φ28mm口径のPET製ボトルとPP製
キャップにおける結果を示す。案内溝はキャップのスカ
ート部内周面に、またピンはボトルの口部の円筒外周面
に設けた。グラフは案内溝と接触する幅が2mmのピン
を3,6,9個配置したときの破断圧力を示したもので
あるが、3個の場合には0.4MPa程度、6個の場合は
0.8MPa程度、9個の場合は1MPa程度が限界圧力
であることを示している。図9にφ38mm口径のPET
製ボトルとPP製キャップにおける結果を示す。案内溝
はキャップのスカート部内周面に、またピンはボトルの
口部の円筒外周面に設けた。このグラフはピン数を6個
としそのピン幅を2mm,4mm,6mmとしたときシ
ール不全となる圧力データである。これによると2mm
の場合には0.8MPa程度で、4mmの場合は1.1MPa
程度で、6mmの場合は1.3MPa程度でシール不全が
起こっている。
The nonlinear guide mechanism includes a pin-shaped independent projection 22, a low gradient portion 32 and a high gradient portion 31 as shown in FIG.
And a combination of spiral grooves 3 having a non-linear gradient. This has a function of being able to move freely in the non-linear groove 3 because the independent projection 22 has a thin pin shape. However, this type has a structural problem that the sealing pressure concentrates on the pin and acts as a load when the cap is closed. The data of the pressure resistance test of the cap of the combination type of the pin and the groove of the bottle-shaped container is shown below. FIG. 8 shows the results of a PET bottle having a diameter of 28 mm and a cap made of PP. The guide groove was provided on the inner peripheral surface of the skirt portion of the cap, and the pin was provided on the outer peripheral surface of the cylinder at the mouth of the bottle. The graph shows the breaking pressure when 3, 6 and 9 pins having a width of 2 mm that are in contact with the guide grooves are arranged. In the case of three pins, about 0.4 MPa, and in the case of six pins.
It is shown that the critical pressure is about 0.8 MPa, and about 1 MPa for 9 pieces. Figure 9 shows a PET with a diameter of 38 mm.
The results for a bottle made of PP and a cap made of PP are shown. The guide groove was provided on the inner peripheral surface of the skirt portion of the cap, and the pin was provided on the outer peripheral surface of the cylinder at the mouth of the bottle. This graph shows pressure data at which sealing failure occurs when the number of pins is 6 and the pin widths are 2 mm, 4 mm, and 6 mm. According to this, 2mm
In the case of about 0.8MPa, in the case of 4mm 1.1MPa
In the case of 6 mm, the sealing failure occurs at about 1.3 MPa.
【0008】本発明は封止状態においては低勾配の案内
部材と独立突起の係合により、従来の低勾配一条ネジの
キャップと同様キャップ天板の内面と容器口端部間の圧
接を安定堅実なものとする。キャップを開くに際して
は、キャップを回動すると低勾配の案内部材に沿って独
立突起が当接係合して案内されて徐々に容器軸方向に変
位し、高勾配案内部に達するとキャップ天板の内面と容
器口端部間の圧接が解かれ独立突起は自由となってキャ
ップは容器口部から外すことができるようになるが、こ
の際にタンパーエビデント・バンドは切れる。また、一
旦開封されたキャップを使用途中で再度封止する際に
は、キャップを容器口部に被せると独立突起が相手側の
案内部材に当接する。そのキャップを回動すると該独立
突起は高勾配の案内部材に当接して低勾配部まで係合案
内される。これによりキャップ天板の内面は容器口端部
に圧接されて封止が達成される。なお、緩みに起因する
内容物の漏れの不安がある場合には、従来のようにイン
ナーリングとアウターリングをキャップ天板の内面に備
え、容器口端部の内側面と外側面との協働でシールする
形態を採用してもよい。
According to the present invention, when the low gradient guide member and the independent projection are engaged with each other in the sealed state, the pressure contact between the inner surface of the cap top plate and the end of the container opening can be stably performed similarly to the conventional low gradient single screw cap. It is assumed that When opening the cap, when the cap is rotated, the independent projection is brought into contact with and guided along the low-gradient guide member, and is gradually displaced in the container axial direction. The pressure contact between the inner surface of the container and the end of the container opening is released, and the independent projection is free to allow the cap to be removed from the container opening. At this time, the tamper-evident band is cut off. When the cap once opened is resealed in the middle of use, when the cap is put on the container opening, the independent projection comes into contact with the guide member on the other side. When the cap is rotated, the independent projection comes into contact with the high-gradient guide member and is engaged and guided to the low-gradient portion. As a result, the inner surface of the cap top plate is pressed against the end of the container opening to achieve sealing. If there is concern about leakage of contents due to loosening, the inner ring and outer ring are provided on the inner surface of the cap top plate as in the past, and the inner and outer surfaces of the container mouth end cooperate with each other. May be adopted.
【0009】[0009]
【実施例1】図2に容器口部1の外周面に6条の溝3を
穿設しキャップスカート部内周面に独立突起22を60°間
隔で6ケ配置した容器口部とキャップの例をしめす。溝
部3は閉止終端部近傍の低勾配部32とそれに続く高勾配
部31からなる非線形案内となっている。6ケの独立突起
22は6条の溝部3にそれぞれ案内され、閉止状態では独
立突起22は低勾配の溝32にあるため、従来の一条ネジキ
ャップと均等な安定堅実なシールが確保できる。また、
キャップ2を回動して開ける場合には独立突起22は低勾
配部32を越えると高勾配部31に至るのでこれによって容
器口部軸方向に大きく変位することになる。使用者はキ
ャップ2を60°回動するだけでキャップ2を外すことが
できる。使用中に再度閉止するときはキャップ2の独立
突起22は高勾配の溝31に案内されてすぐに深く容器口部
1に嵌まり込み、続く低勾配部32に案内される。その際
キャップ2の天板21の内面のシールリング23が容器口部
1の端部の薄肉部11に当接するが、一条ネジに相当する
低勾配部32の案内により徐々に深く閉められることによ
り、再び安定堅実なシールが確保されることになる。プ
ラスチック製キャップ2の材料樹脂としては、各種プラ
スチック、例えば、低,中,高密度ポリエチレン、ポリ
プロピレン、熱可塑性ポリエステル、ポリアミド、スチ
レン、ABS樹脂等が挙げられる。また、本発明のプラ
スチック製キャップ2は、上記樹脂を用い、通常、射出
成形、圧縮成形等により製造される。
Embodiment 1 FIG. 2 shows an example of a container mouth and a cap in which six grooves 3 are formed on the outer peripheral surface of the container mouth 1 and six independent projections 22 are arranged at 60 ° intervals on the inner peripheral surface of the cap skirt. Show The groove 3 is a non-linear guide comprising a low gradient portion 32 near the closing end portion and a high gradient portion 31 following the low gradient portion 32. 6 independent projections
22 are guided by the six grooves 3, respectively. In the closed state, the independent projections 22 are in the low-gradient grooves 32, so that a stable and solid seal equivalent to that of the conventional single-thread screw cap can be secured. Also,
When the cap 2 is opened by rotation, the independent projection 22 reaches the high gradient portion 31 beyond the low gradient portion 32, so that the independent projection 22 is largely displaced in the container opening axial direction. The user can remove the cap 2 simply by rotating the cap 2 by 60 °. When the cap 2 is closed again during use, the independent projection 22 of the cap 2 is guided by the high-gradient groove 31 and immediately fits deeply into the container mouth 1, and is guided to the subsequent low-gradient portion 32. At this time, the seal ring 23 on the inner surface of the top plate 21 of the cap 2 comes into contact with the thin portion 11 at the end of the container opening 1, but is gradually and deeply closed by the guide of the low gradient portion 32 corresponding to a single thread. Again, a stable and secure seal is ensured. Examples of the material resin for the plastic cap 2 include various plastics, for example, low, medium and high density polyethylene, polypropylene, thermoplastic polyester, polyamide, styrene, ABS resin and the like. In addition, the plastic cap 2 of the present invention is usually manufactured by injection molding, compression molding or the like using the above resin.
【0010】[0010]
【実施例2】図3に示す実施例は独立突起22が容器口部
1側に6個、低勾配部32と高勾配部31からなる非線形案
内溝3が6条キャップ2側に設けられている。この場合
非線形案内溝3の形状は勾配角の符号が図2の例とは正
負反対となる。作用効果は先の例と同様である。
Embodiment 2 In the embodiment shown in FIG. 3, six independent projections 22 are provided on the container mouth 1 side, and a non-linear guide groove 3 comprising a low gradient portion 32 and a high gradient portion 31 is provided on the six-row cap 2 side. I have. In this case, the sign of the gradient angle of the shape of the nonlinear guide groove 3 is opposite to the sign of the example of FIG. The operation and effect are the same as in the previous example.
【0011】[0011]
【実施例3】図4に示す実施例は独立突起22がキャップ
2側に6個、低勾配部32と高勾配部31からなる非線形案
内溝3が6条容器口部1側に設けられている点で図2に
示した実施例と同様である。この実施例が異なるのは非
線形案内溝3が容器口部1の外周面に穿設されるのでは
なく、2本の凸条4の間に形成された溝である点であっ
て、作用効果は先の例と同様である。また、この2本の
凸条4の間に形成された溝3が容器口部1の外周面では
なくてキャップ2のスカート部内周面に設ける変形形態
でもよい。その場合には容器口部1の外周面に独立突起
22が設けられ、非線形案内溝3の形状が勾配角の符号が
図2の例とは正負反対となるのは図3の場合と同様であ
る。
Embodiment 3 In the embodiment shown in FIG. 4, six independent projections 22 are provided on the cap 2 side, and a non-linear guide groove 3 comprising a low-gradient portion 32 and a high-gradient portion 31 is provided on the six-container mouth 1 side. This is similar to the embodiment shown in FIG. This embodiment differs from the first embodiment in that the non-linear guide groove 3 is not formed in the outer peripheral surface of the container opening 1 but is formed between the two ridges 4. Is similar to the previous example. Further, a modified form in which the groove 3 formed between the two ridges 4 is provided not on the outer peripheral surface of the container opening 1 but on the inner peripheral surface of the skirt portion of the cap 2 may be used. In that case, an independent projection is provided on the outer peripheral surface of the container
2 and the shape of the non-linear guide groove 3 is the same as that in FIG.
【0012】[0012]
【実施例4】次に図5に示した実施例を説明する。図5
Aに容器口部に設ける凸条の中央線を展開図の形で示
す。また図中Bは容器口部の正面図であり、Cはキャッ
プの断面図である。口部5の外径がφ25mmの容器の
口部外周面を13.1mmづつ図中右側6区分し、各区分毎
に閉止終端部は1条ネジに相当する2.4°の低勾配部3
2,中間部分は60°の高勾配部31,更に開放端部は2.4°
の低勾配部30と連続する幅1.5mmの凸条4を設けた。
高さ16mm内径φ28mmのキャップ側にはスカート部
内周面の天板内面から9.2mmの位置に幅1.5mm長さ3
mm傾斜角は凸条4の低勾配部32と同じ2.4°の傾斜角
の長円状の独立突起を60°間隔で6個設けてある。前記
の凸条4において重要な構成は口部1下方の閉止終端部
の低勾配部32とそれに続く中間部の高勾配部32である。
閉止終端部の低勾配部30はキャップの独立突起22と係合
して容器口部にキャップの天板21を圧接させて封止を達
成させるものであり、それに続く中間部分の高勾配部31
は凸条4と独立突起22の係合を解除させたり係合に導く
機能を果たすものである。開放端部の低勾配部30とそれ
に続く高勾配部31はキャップを回動操作によって開閉す
る際にスムーズな案内としての機構を備えるが本発明に
おいて必須の構成ではない。
Embodiment 4 Next, the embodiment shown in FIG. 5 will be described. FIG.
The center line of the ridge provided at the container mouth in A is shown in the form of a developed view. B is a front view of the container mouth, and C is a cross-sectional view of the cap. The outer peripheral surface of the mouth of the container whose outer diameter of the mouth 5 is φ25 mm is divided into 6 sections on the right side in the figure by 13.1 mm each, and the closing end of each section is a low-gradient section of 2.4 ° corresponding to a single thread 3.
2. The middle part has a high gradient part 31 of 60 °, and the open end part is 2.4 °
And a ridge 4 having a width of 1.5 mm continuous with the low gradient portion 30 is provided.
On the cap side with a height of 16 mm and an inner diameter of φ28 mm, a width of 1.5 mm and a length of 3 at a position of 9.2 mm from the inner surface of the top plate on the inner surface of the skirt
As for the mm inclination angle, six elliptical independent projections having the same inclination angle of 2.4 ° as the low inclination portion 32 of the ridge 4 are provided at intervals of 60 °. The important configuration of the ridge 4 is a low gradient portion 32 at the closing end portion below the mouth 1 and a high gradient portion 32 following the middle portion.
The low-gradient portion 30 at the end of the closing portion engages with the independent projection 22 of the cap to press the top plate 21 of the cap against the container mouth to achieve sealing, and then the high-gradient portion 31 at the intermediate portion.
Functions to release the engagement between the ridges 4 and the independent projections 22 or to guide the engagement. The low-gradient portion 30 at the open end and the subsequent high-gradient portion 31 are provided with a mechanism as a smooth guide when the cap is opened and closed by a rotating operation, but are not essential components in the present invention.
【0013】この実施例の形態が優れた点は非線形案内
にもかかわらず独立突起の幅を広く採ることができるこ
とにより、耐圧性が高くできることにある。曲折部や非
線形の案内溝にも自在に追従できるものとして図2乃至
図4に提案したピン状の独立突起と溝案内方式のもつピ
ンに負荷が掛かるという構造的弱点を、横広形状の独立
突起を採用することで克服し、耐圧性の高い容器口部及
びキャップを提供するものである。独立突起を横広形状
にするということは案内凸条との接触を面接触形態にす
るということであり、先のピン−溝接触が点接触に近い
ものであった形態に比べ応力の分散が格段に図られるこ
とになる。横広形状の独立突起としては長円状や矩形或
いは半円形菱形形状など種々のものが考えられる。
The advantage of this embodiment is that the width of the independent projection can be widened in spite of the non-linear guidance, so that the pressure resistance can be increased. The structural weak point that a load is applied to the pin-shaped independent projection and the pin having the groove guide system proposed in FIGS. An object of the present invention is to overcome the problem by employing a projection and to provide a container port and a cap having high pressure resistance. Making the independent projections wider is to make the contact with the guide ridge a surface contact form, and the dispersion of stress is smaller than the form where the previous pin-groove contact was close to point contact. It will be achieved remarkably. As the wide independent protrusion, various shapes such as an ellipse, a rectangle, and a semicircular rhombus can be considered.
【0014】[0014]
【実施例5】本発明の異なる実施例を図6に示す。この
実施例では容器口部1の外周面に独立突起22を60度間隔
で6個設け、これと当接して案内する凸条4をキャップ
2の内周面に6条設けた。この案内凸条4は図5に示し
たものとは勾配の正負が異なるだけで、閉止終端部は1
条ネジに相当する2.4°の低勾配部32,中間部分は60°
の高勾配部31,更に開放端部は2.4°の低勾配部30と連
続する幅1.5mmの凸条4が設けられる。また、独立突
起22は長円状で下面の傾きは凸条4と面接触がとれるよ
うに同じ2.4°の低勾配としている。この実施例は凸条
4の上面と独立突起22の下面が係合する形態となる点で
も先のものと相違する。
Embodiment 5 A different embodiment of the present invention is shown in FIG. In this embodiment, six independent projections 22 are provided on the outer peripheral surface of the container mouth 1 at intervals of 60 degrees, and six convex ridges 4 are provided on the inner peripheral surface of the cap 2 so as to contact and guide them. This guide ridge 4 is different from that shown in FIG.
2.4 ° low gradient part 32 corresponding to the thread, 60 ° in the middle part
The high-gradient portion 31 is further provided with a 1.5 mm wide ridge 4 continuous with the 2.4 ° low-gradient portion 30 at the open end. In addition, the independent projection 22 has an oblong shape, and the inclination of the lower surface is set to the same low gradient of 2.4 ° so as to make surface contact with the ridge 4. This embodiment is also different from the previous embodiment in that the upper surface of the ridge 4 and the lower surface of the independent projection 22 are engaged.
【0015】[0015]
【実施例6】更に工夫を加えた本発明の実施例を次に示
す。この実施例は容器口部外周面又はキャップ内周面を
6区分し、各区分毎に閉止終端部は1条ネジに相当する
低勾配部32、それに続く部分は高勾配部31と連続する案
内を設ける点で先の例と同様であるが、独立突起22が図
5、図6のように1つの凸条4に係合案内されるのでは
なく、凹溝部3に案内される点で図2乃至図4のものと
類似し、独立突起22が横広形状である点で図5、図6に
示した例と類似している。図7は容器口部1に凸条4を
設け、キャップ2側に横広形状の独立突起22を設けた例
を展開図の形で示したものである。該凸条4間には凹溝
3が形成されており、これが独立突起22を嵌合案内す
る。この嵌合案内は低勾配部32においては嵌合案内が容
器口部側である場合は独立突起22の上面が、そして嵌合
案内がキャップ側の場合は下面が溝3に当接して案内さ
れ、高勾配部31においては独立突起22の左右面が溝3に
緩く接して案内される形態を採るように概ね平行四辺形
に形成される。これによって低勾配部32における案内部
材と独立突起との接触率を高め図5、図6の例と同様に
高い耐圧性を確保した上で、図5、図6の例が高勾配部
における案内が不十分である問題点を克服し、再閉止の
際にもスムーズな案内を確保できるようにしたものであ
る。独立突起22が横広形状であるため、凹溝3の幅は図
2乃至図4に示した例のように均一ではなく、案内の勾
配が急な部分では幅太に形成される。凸条4の幅につい
ても一定である必要はなく、また図示した例は溝部3を
構成する両側の凸条4を連続形態としたが、上側凸条と
下側凸条を別体構成としてもよい。
[Embodiment 6] An embodiment of the present invention, which is further improved, will be described below. In this embodiment, the outer peripheral surface of the container mouth or the inner peripheral surface of the cap is divided into six sections, and the closing end of each section is continuous with the low gradient section 32 corresponding to a single thread, and the subsequent section is connected to the high gradient section 31. Is provided in the same manner as in the previous example, except that the independent projection 22 is guided by the concave groove 3 instead of being engaged and guided by a single ridge 4 as shown in FIGS. 2 to 4, and similar to the examples shown in FIGS. 5 and 6 in that the independent projection 22 has a horizontal wide shape. FIG. 7 is an exploded view showing an example in which the convex portion 4 is provided on the container mouth portion 1 and the laterally wide independent projection 22 is provided on the cap 2 side. A concave groove 3 is formed between the ridges 4, and this guides the independent projection 22 in fitting. When the fitting guide is on the container mouth side, the upper surface of the independent projection 22 is brought into contact with the groove 3 when the fitting guide is on the cap side, and the lower surface is brought into contact with the groove 3 when the fitting guide is on the cap side. In the high gradient portion 31, the left and right surfaces of the independent protrusion 22 are formed in a substantially parallelogram so as to adopt a form in which the left and right surfaces are loosely in contact with the groove 3 and are guided. Thereby, the contact ratio between the guide member and the independent projection in the low gradient portion 32 is increased to ensure high pressure resistance as in the examples of FIGS. 5 and 6, and the example of FIGS. However, it is possible to secure smooth guidance even when re-closing. Since the independent protrusion 22 has a wide shape, the width of the concave groove 3 is not uniform as in the examples shown in FIGS. 2 to 4, and is formed thick in a portion where the guide gradient is steep. The width of the ridges 4 does not need to be constant, and in the illustrated example, the ridges 4 on both sides constituting the groove 3 are continuous, but the upper ridges and the lower ridges may be formed separately. Good.
【0016】図7には溝3が凸条4間に形成されるもの
として示したが、これに限らず容器口部の外周面に直接
溝を穿設する形態でもよい。また、溝部3を容器口部1
側ではなくキャップ2側に設けてもよいが、その場合に
は低勾配部32と高勾配部32と連続する案内が傾斜角にお
いて正負符号が反対となるのは先の例で説明したのと同
様である。この例には溝部3を容器口部1側に設ける場
合とキャップ2側に設ける場合と凸条4間に設ける場合
と容器口部1又はキャップ2に直接穿設する場合の4通
りのバリエーションがあることは前述の説明から容易に
ご理解戴けるであろう。
FIG. 7 shows that the grooves 3 are formed between the ridges 4. However, the present invention is not limited to this, and the grooves 3 may be formed directly on the outer peripheral surface of the container mouth. Further, the groove 3 is connected to the container opening 1.
Although it may be provided on the cap 2 side instead of the side, in this case, the signs continuous with the low gradient portion 32 and the high gradient portion 32 have opposite signs at the inclination angle as described in the previous example. The same is true. In this example, there are four variations: a case where the groove 3 is provided on the container mouth 1 side, a case where the groove 3 is provided on the cap 2 side, a case where the groove 3 is provided between the ridges 4 and a case where the groove 3 is directly bored in the container mouth 1 or the cap 2. Some things will be easily understood from the above description.
【0017】[0017]
【発明の効果】本発明における容器口部と該口部に嵌合
されるキャップ部材間の封止機構部は、容器口部端面と
キャップ天板間のシールが、容器口部の円筒外周面また
はキャップのスカート部内周面に形成された複数組みの
案内部材と他方に設けられた独立突起の係合案内によっ
て達成される形態であって、前記案内部材はキャップの
閉止終端部近辺では一条ネジ程度の低勾配に、それに連
続する部分では高勾配を持つように設けられているた
め、低勾配の案内部材と独立突起が係合して容器口部を
キャップ天板の内面に圧接するので天板部の弾性によっ
て封止が達成される。しかも1条ネジに相当する低勾配
であるため緩みを生じることがなくその封止は堅実で安
定している上、低勾配部に続く高勾配の案内によってキ
ャップは握りを変えることなくワンタッチで開閉するこ
とができる。
According to the present invention, the sealing mechanism between the container mouth and the cap member fitted into the mouth is such that the seal between the container mouth end face and the cap top plate is formed by the cylindrical outer peripheral surface of the container mouth. Alternatively, a plurality of sets of guide members formed on the inner peripheral surface of the skirt portion of the cap and an independent guide provided on the other side may be engaged and guided, and the guide member may be a single screw near the closing end of the cap. It is provided with a low gradient of a degree and a high gradient at the part following it, so that the low gradient guide member and the independent projection engage to press the container mouth against the inner surface of the cap top plate, so Sealing is achieved by the elasticity of the plate portion. In addition, the low gradient equivalent to a single thread does not cause looseness due to the low gradient, and its sealing is stable and stable. In addition, the high gradient guide following the low gradient part allows the cap to be opened and closed with one touch without changing the grip can do.
【0018】また案内部材と接触する独立突起はピン状
ではなく横広形状に形成させることもできるので、その
形態においては案内部材との接触面積を広くとることが
でき負荷がピンに局部的にかかることはなくなって応力
の集中が避けられる。更に、横広形状の独立突起を低勾
配部においても高勾配部においても嵌合案内するように
幅が変化した形態の案内機構を採用した場合には高シー
ル性とワンタッチの好操作性の上に高い耐圧性とキャッ
プの開閉操作がスムーズであるという総合的に優れた効
果を奏することができる。また、本発明の案内機構を採
用することで、キャップの高さ(キャップハイト)を低
くすることができ、現在キャップに求められている低価
格化の面でも効果が期待できる。
Further, since the independent projection which comes into contact with the guide member can be formed not in a pin shape but in a laterally wide shape, the contact area with the guide member can be widened in this mode, and the load is locally applied to the pin. This does not occur and stress concentration can be avoided. Furthermore, when a guide mechanism with a variable width is adopted to guide the wide and independent protrusions to fit in both the low gradient section and the high gradient section, high sealing performance and one-touch good operability can be achieved. In addition, the overall excellent effect that the pressure resistance is high and the opening and closing operation of the cap is smooth can be achieved. In addition, by adopting the guide mechanism of the present invention, the height of the cap (cap height) can be reduced, and an effect can be expected in terms of cost reduction currently required for the cap.
【図面の簡単な説明】[Brief description of the drawings]
【図1】本発明の凸条中央線の軌跡を示す図。FIG. 1 is a diagram showing a locus of a center line of a ridge according to the present invention.
【図2】本発明の第1実施例を示す図で、Aは独立突起
を設けたキャップの断面図、Bは溝部を設けた容器口部
の正面図である。
FIG. 2 is a view showing a first embodiment of the present invention, wherein A is a cross-sectional view of a cap provided with an independent projection, and B is a front view of a container mouth provided with a groove.
【図3】本発明の第2実施例を示す図で、Aは溝部を設
けたキャップの一部断面図、Bは独立突起を設けた容器
口部の正面図である。
FIG. 3 is a view showing a second embodiment of the present invention, wherein A is a partial cross-sectional view of a cap provided with a groove, and B is a front view of a container mouth provided with an independent projection.
【図4】案内溝を凸条間の凹溝形態とした本発明の第3
実施例を示す図で、Aは独立突起を設けたキャップの断
面図、Bは溝部を設けた容器口部の正面図である。
FIG. 4 shows a third embodiment of the present invention in which the guide groove is formed as a concave groove between convex stripes.
In the figures showing the examples, A is a sectional view of a cap provided with independent projections, and B is a front view of a container mouth provided with a groove.
【図5】本発明の第4実施例を示す図で、Aは凸条を設
けた容器口部の展開図で、Bはその容器口部の正面図、
Cは独立突起を設けたキャップの断面図である。
FIG. 5 is a view showing a fourth embodiment of the present invention, wherein A is a developed view of a container mouth provided with a ridge, B is a front view of the container mouth,
C is a sectional view of the cap provided with the independent projection.
【図6】本発明の第5実施例を示す図で、Aは凸条を設
けたキャップ内周面の展開図で、Bは独立突起を設けた
容器口部の正面図、Cは凸条を設けたキャップの断面図
である。
FIG. 6 is a view showing a fifth embodiment of the present invention, wherein A is a developed view of an inner peripheral surface of a cap provided with a ridge, B is a front view of a container mouth provided with an independent projection, and C is a ridge. It is sectional drawing of the cap provided with.
【図7】横広で概ね平行四辺形の独立突起とそれを低勾
配部と高勾配部とで嵌合案内する溝案内の形態を採る本
発明の第6実施例の基本形態を示す図である。
FIG. 7 is a view showing a basic form of a sixth embodiment of the present invention in the form of a wide and substantially parallelogram-shaped independent projection and a groove guide for fitting and guiding the same at a low gradient portion and a high gradient portion. is there.
【図8】独立突起−溝キャップにおいて、独立突起の数
とキャップの耐圧性の関係を示すグラフ。
FIG. 8 is a graph showing the relationship between the number of independent protrusions and the pressure resistance of the cap in the independent protrusion-groove cap.
【図9】独立突起−溝キャップにおいて、独立突起の幅
とキャップの耐圧性の関係を示すグラフ。
FIG. 9 is a graph showing the relationship between the width of the independent protrusion and the pressure resistance of the cap in the independent protrusion-groove cap.
【図10】従来の容器口部とキャップの構成例を示す図。FIG. 10 is a diagram showing a configuration example of a conventional container opening and a cap.
【符号の説明】[Explanation of symbols]
1 容器口部 3 案内溝部 11 薄肉部 30 開放端部 2 キャップ 31 高勾配部 21 天板 32 低勾配部 22 独立突起 4 凸条 23 シールリング 5 タンパー・エビデント・バ
ンド
DESCRIPTION OF SYMBOLS 1 Container mouth part 3 Guide groove part 11 Thin part 30 Open end part 2 Cap 31 High gradient part 21 Top plate 32 Low gradient part 22 Independent projection 4 Convex stripe 23 Seal ring 5 Tamper evidence band
───────────────────────────────────────────────────── フロントページの続き Fターム(参考) 3E033 AA01 BA13 DA05 GA02 3E084 AA04 AA12 AB01 BA01 CA01 CC03 DA01 DB03 DB12 DC03 FA09 FB01 GA04 GB04 GB08 HA03 HB07 HC03 HD01 KB01 LA05 LA17 LB02 LB07 LD01 ────────────────────────────────────────────────── ─── Continued on the front page F term (reference) 3E033 AA01 BA13 DA05 GA02 3E084 AA04 AA12 AB01 BA01 CA01 CC03 DA01 DB03 DB12 DC03 FA09 FB01 GA04 GB04 GB08 HA03 HB07 HC03 HD01 KB01 LA05 LA17 LB02 LB07 LD01

Claims (6)

    【特許請求の範囲】[Claims]
  1. 【請求項1】 容器口部と該口部に嵌合されるキャップ
    間の封止機構部は、容器口部の円筒外周面に形成された
    複数の螺旋案内部とキャップのスカート部内周面に設け
    られた複数の独立突起の係合案内によって容器口端部と
    キャップ天板部との間で達成される形態であって、前記
    螺旋案内部はキャップの閉止終端部近辺では一条ネジ程
    度の低勾配に、それに連続する部分では高勾配を持つよ
    うに設けられた容器口部及びキャップ。
    A sealing mechanism between a container mouth and a cap fitted to the mouth includes a plurality of spiral guides formed on a cylindrical outer peripheral surface of the container mouth and an inner peripheral surface of a skirt portion of the cap. This is a form achieved between the container mouth end and the cap top plate by the engagement guide of the plurality of independent projections provided, wherein the spiral guide portion is as low as a single thread near the closing end of the cap. A container mouth and a cap provided with a gradient and a high gradient in a portion following the gradient.
  2. 【請求項2】 容器口部と該口部に嵌合されるキャップ
    間の封止機構部は、キャップのスカート部内周面に設け
    られた複数の螺旋案内部と容器口部の円筒外周面に形成
    された複数の独立突起の係合案内によって容器口端部と
    キャップ天板部との間で達成される形態であって、前記
    螺旋案内部はキャップの閉止終端部近辺では一条ネジ程
    度の低勾配に、それに連続する部分では高勾配を持つよ
    うに設けられた容器口部及びキャップ。
    2. A sealing mechanism between a container mouth and a cap fitted to the mouth, a plurality of spiral guides provided on an inner peripheral surface of a skirt portion of the cap and a cylindrical outer peripheral surface of the container mouth. This is a mode achieved between the end of the container mouth and the cap top plate by the engagement guide of the formed plurality of independent projections, wherein the spiral guide portion is as low as a single thread near the closing end of the cap. A container mouth and a cap provided with a gradient and a high gradient in a portion following the gradient.
  3. 【請求項3】 螺旋案内部が独立突起を係合案内する凸
    条である請求項1または2に記載の容器口部及びキャッ
    プ。
    3. The container mouth and the cap according to claim 1, wherein the spiral guide is a ridge for engaging and guiding the independent projection.
  4. 【請求項4】 螺旋案内部が独立突起を嵌合案内するべ
    く穿設された溝である請求項1または2に記載の容器口
    部及びキャップ。
    4. The container opening and cap according to claim 1, wherein the spiral guide portion is a groove formed to fit and guide the independent projection.
  5. 【請求項5】 螺旋案内部が独立突起を嵌合案内する凸
    条間の溝である請求項1または2に記載の容器口部及び
    キャップ。
    5. The container opening and the cap according to claim 1, wherein the spiral guide portion is a groove between ridges for fittingly guiding the independent projection.
  6. 【請求項6】 溝は低勾配個所においては幅狭にそれに
    連続する高勾配個所においては幅広に設けられ、該溝に
    案内される独立突起は横広形状であって、低勾配個所に
    おいては上面又は下面が当接しそれに連続する高勾配個
    所においては左右面が緩く溝面に接する形態である請求
    項4または5に記載の容器口部及びキャップ。
    6. The groove is provided to be narrow at a low-gradient portion and wide at a high-gradient portion connected thereto, and the independent projection guided by the groove has a wide shape, and has a top surface at the low-gradient portion. The container opening and the cap according to claim 4 or 5, wherein the lower surface is in contact and the left and right surfaces are loosely in contact with the groove surface in a high gradient portion continuous therewith.
JP2000237957A 2000-08-07 2000-08-07 Container mouth and cap Expired - Fee Related JP4737351B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000237957A JP4737351B2 (en) 2000-08-07 2000-08-07 Container mouth and cap

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JP2002046755A true JP2002046755A (en) 2002-02-12
JP4737351B2 JP4737351B2 (en) 2011-07-27

Family

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013151307A (en) * 2012-01-25 2013-08-08 Kukai:Kk Beverage dispenser
KR20180082903A (en) * 2017-01-11 2018-07-19 박내덕 Vessel cap for high for discharging the contents of high viscosity

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50102745A (en) * 1974-01-25 1975-08-14
JPS5333542A (en) * 1976-09-10 1978-03-29 Hitachi Ltd Signal detection circuit
JPS53144445A (en) * 1977-05-23 1978-12-15 Mitsubishi Heavy Ind Ltd Method of explosive welding
JPS63258764A (en) * 1986-05-16 1988-10-26 Crown Cork Japan Closing mechanism of vessel mouth section
JPH11349015A (en) * 1998-06-05 1999-12-21 Mitsubishi Plastics Ind Ltd Portable vessel

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50102745U (en) * 1974-01-18 1975-08-25
JPS5333542U (en) * 1976-08-27 1978-03-24
JPS53144445U (en) * 1977-04-15 1978-11-14
JPH0577039U (en) * 1992-03-25 1993-10-19 スミ株式会社 Mating container

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50102745A (en) * 1974-01-25 1975-08-14
JPS5333542A (en) * 1976-09-10 1978-03-29 Hitachi Ltd Signal detection circuit
JPS53144445A (en) * 1977-05-23 1978-12-15 Mitsubishi Heavy Ind Ltd Method of explosive welding
JPS63258764A (en) * 1986-05-16 1988-10-26 Crown Cork Japan Closing mechanism of vessel mouth section
JPH11349015A (en) * 1998-06-05 1999-12-21 Mitsubishi Plastics Ind Ltd Portable vessel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013151307A (en) * 2012-01-25 2013-08-08 Kukai:Kk Beverage dispenser
KR20180082903A (en) * 2017-01-11 2018-07-19 박내덕 Vessel cap for high for discharging the contents of high viscosity

Also Published As

Publication number Publication date
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