JP2001199459A - Locking structure of container and lid - Google Patents

Locking structure of container and lid

Info

Publication number
JP2001199459A
JP2001199459A JP2000008635A JP2000008635A JP2001199459A JP 2001199459 A JP2001199459 A JP 2001199459A JP 2000008635 A JP2000008635 A JP 2000008635A JP 2000008635 A JP2000008635 A JP 2000008635A JP 2001199459 A JP2001199459 A JP 2001199459A
Authority
JP
Japan
Prior art keywords
container
lid
ring
tamper evidence
opening
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
JP2000008635A
Other languages
Japanese (ja)
Other versions
JP4494569B2 (en
Inventor
Shoji Uehira
庄治 植平
Hisashi Awane
寿 粟根
Koji Fukuda
晃司 福田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daiwa Can Co Ltd
Original Assignee
Daiwa Can Co Ltd
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 Daiwa Can Co Ltd filed Critical Daiwa Can Co Ltd
Priority to JP2000008635A priority Critical patent/JP4494569B2/en
Publication of JP2001199459A publication Critical patent/JP2001199459A/en
Application granted granted Critical
Publication of JP4494569B2 publication Critical patent/JP4494569B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D41/00Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/32Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
    • B65D41/34Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt
    • B65D41/3423Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with flexible tabs, or elements rotated from a non-engaging to an engaging position, formed on the tamper element or in the closure skirt
    • B65D41/3428Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with flexible tabs, or elements rotated from a non-engaging to an engaging position, formed on the tamper element or in the closure skirt the tamper element being integrally connected to the closure by means of bridges
    • B65D41/3433Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with flexible tabs, or elements rotated from a non-engaging to an engaging position, formed on the tamper element or in the closure skirt the tamper element being integrally connected to the closure by means of bridges with drive means between closure and tamper element

Abstract

PROBLEM TO BE SOLVED: To provide a tamper-evident locking structure between a container and a lid wherein the number of rotations of a lid screw required until a weakened part is cut is not increased when opening the lid, and the container and the lid can be compact. SOLUTION: A tip of a locking ring 7 is formed as a plane 7b which is approximately horizontal in a circumferential direction as a locking structure on a side of the lid B. In addition, a chamfer 7c inclined inward and downward from an internal end of the plane 7b is provided in the circumferential direction. An approximately horizontal plane 6b is formed on a lower surface of an annular projection 6 at a container mouth as a locking structure on a side of the container A.

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、飲料用ペット(P
ET)ボトル等に適用され、無断で蓋を操作するとその
証拠が残るタンパーエビデンス特性が確保された容器と
蓋の係止構造に関する。
TECHNICAL FIELD The present invention relates to a pet for beverage (P)
ET) The present invention relates to a container and lid locking structure that is applied to a bottle or the like and that retains evidence of tamper evidence when the lid is operated without permission.

【0002】[0002]

【従来の技術】従来のタンパーエビデンス特性が確保さ
れる容器と蓋の係止構造としては、実開平5−9586
2号公報に記載のものが知られている。
2. Description of the Related Art Conventionally, as a structure for locking a container and a lid in which tamper-evidence characteristics are ensured, Japanese Unexamined Utility Model Publication No.
No. 2 is known.

【0003】この従来公報には、図6に示すように、天
面部101の周縁から垂下し、容器の開口部内壁に密接
するインナープラグ109と、前記天面部101の周縁
から垂下し内側に容器口部のネジ108と螺合するネジ
部110を有するスカート部102と、その下端から切
断可能な弱化部103を介して垂下するタンパーエビデ
ンスリング104と、その下端部から薄肉部107aを
介して内側に折り返された係止用リング107とを備え
た蓋(キャップ)が記載されている。この蓋の係止用リ
ング107は、容器に設けられた環状突出部106に係
合し、この状態のまま蓋の螺合を緩めていくと、スカー
ト部102は上昇しようとするが、係止用リング107
は環状突出部106によって上昇を阻止されているの
で、弱化部103に張力が加わり、弱化部103が切断
されることで、タンパーエビデンスリング104が容器
口部に残る。これにより、消費者が開封事実を認識する
ことができる構造となっている。
As shown in FIG. 6, this prior art publication discloses an inner plug 109 that hangs down from the periphery of the top surface 101 and is in close contact with the inner wall of the opening of the container. A skirt portion 102 having a screw portion 110 to be screwed with a screw 108 of a mouth, a tamper evidence ring 104 hanging from a lower end thereof through a weakened portion 103, and an inner side from a lower end portion thereof through a thin portion 107a. And a lid (cap) provided with a locking ring 107 folded back. The locking ring 107 of the lid engages with the annular projecting portion 106 provided on the container, and when the screw of the lid is loosened in this state, the skirt portion 102 tends to rise. Ring 107
Is prevented from rising by the annular projecting portion 106, tension is applied to the weakened portion 103, and the weakened portion 103 is cut, so that the tamper evidence ring 104 remains at the container opening. This provides a structure that allows the consumer to recognize the fact of opening.

【0004】[0004]

【発明が解決しようとする課題】しかしながら、上記従
来技術においては、図7に示すように、蓋の係止リング
107の先端部が平面状(平面部107b)に形成され
ているのみである。よって、容器口部に蓋を螺合する
時、蓋の係止リング107が容器の環状突出部106を
乗り越える際に、図8(イ)に示すように、薄肉部10
7aが支点となって外周方向に押し広げられる。この押
し広げられた係止リング107の先端の平面部107b
は、その最小径部の位置が上方に上がる。その際に、環
状突出部106と係止リング107との強い摩擦抵抗に
よりタンパーエビデンスリング104全体が下降し難く
なり、一方、スカート部102及びその上方部分は螺合
に伴い一定量下降するので、弱化部103の隙間111
を狭くするようにタンパーエビデンスリング上端から上
方に設けられている凸状部103bの上端面とスカート
部102の下端面とが接触して他の部分の隙間111が
狭くなる。そして、係止リング107の平面部107b
の最小径部が完全に容器口部の環状突出部106の最大
外径部106aを乗り越えるまで蓋を閉めると、図8
(ロ)に示すように、押し広げられた係止リング107
が薄肉部107aを支点として内側に元の状態に戻り、
係止リング107の平面部107bの位置が下方に下が
る。
However, in the above-mentioned prior art, as shown in FIG. 7, only the distal end of the locking ring 107 of the lid is formed in a flat shape (flat portion 107b). Therefore, when the lid is screwed into the container opening, when the locking ring 107 of the lid gets over the annular projecting portion 106 of the container, as shown in FIG.
7a serves as a fulcrum and is expanded in the outer peripheral direction. The flat portion 107b at the tip of the expanded locking ring 107
The position of the minimum diameter portion is raised upward. At that time, the entire tamper evidence ring 104 becomes difficult to descend due to strong frictional resistance between the annular projection 106 and the locking ring 107, while the skirt 102 and its upper part descend by a fixed amount with the screw engagement. Gap 111 of weakened portion 103
The upper end surface of the convex portion 103b provided upward from the upper end of the tamper evidence ring and the lower end surface of the skirt portion 102 come into contact with each other so as to narrow the gap 111 in other portions. Then, the flat portion 107b of the locking ring 107
When the lid is closed until the minimum diameter portion of the container completely passes over the maximum outer diameter portion 106a of the annular projecting portion 106 of the container mouth, FIG.
(B) As shown in FIG.
Returns to the original state inside with the thin portion 107a as a fulcrum,
The position of the flat portion 107b of the locking ring 107 is lowered.

【0005】すると、容器口部の環状突出部106の下
端に形成された略水平面部106bと蓋の係止リング1
07の平面部107bとに隙間が生じ、生じた隙間の分
だけ蓋を開ける際に、弱化部103が切れるまでに必要
な蓋のネジ回転数が増加する。また、その分容器口部と
蓋の縦方向の長さが長くなり、材料や包装のコストアッ
プにつながるという問題がある。
[0005] Then, a substantially horizontal surface portion 106b formed at the lower end of the annular protruding portion 106 of the container mouth portion and the locking ring 1 of the lid are provided.
A gap is formed between the flat portion 107b and the flat portion 107, and when the cover is opened by the amount of the created gap, the screw rotation speed of the cover required until the weakened portion 103 is cut off increases. In addition, there is a problem that the length of the container opening and the lid in the vertical direction becomes longer, which leads to an increase in the cost of materials and packaging.

【0006】また、蓋を開けるまでのネジ回転数が増加
した分、消費者は無駄に蓋を回さなければならず煩わし
いという問題があった。
[0006] In addition, there is a problem in that the user must turn the lid needlessly because of the increase in the number of rotations of the screw before opening the lid.

【0007】本発明は上述の従来の問題点に着目してな
されたもので、タンパーエビデンス性を有する容器と蓋
の係止構造において、蓋を開ける際に、弱化部が切れる
までに必要な蓋のネジ回転数を増加させることなく、容
器や蓋をコンパクトにすることができる容器と蓋の係止
構造を提供することを目的とする。
SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems. In a locking structure between a container having tamper-evident properties and a lid, when the lid is opened, the lid required until the weakened portion is cut off. An object of the present invention is to provide a container and lid locking structure that can make the container and lid compact without increasing the number of screw rotations.

【0008】[0008]

【課題を解決するための手段】上記課題を解決する手段
として、請求項1記載の発明では、ネジ部と該ネジ部の
下に環状突出部が設けられた容器の口部に、螺旋状態で
被冠し容器口部の開口部を密封させる蓋であって、天面
部の内面から垂下し容器の開口部壁に密接する環状密封
部と、前記天面部の周縁から垂下し内側に容器口部のネ
ジに螺合するネジ部を有するスカート部と、該スカート
部の下端から切断可能な弱化部を介して形成されたタン
パーエビデンスリングと、該タンパーエビデンスリング
の下端部から薄肉部を介して内側に折り返された係止リ
ングとを備えた前記蓋を、前記容器口部に完全に螺合さ
せた後、前記蓋の螺合を緩めることにより前記係止リン
グが前記容器口部の環状突出部に係合し、前記弱化部が
破断し、タンパーエビデンスリングが容器口部に残るよ
うに形成されたタンパーエビデンス性を有する容器と蓋
の係止構造において、前記容器口部の環状突出部の下面
が略水平面状に形成されており、前記蓋が容器口部に係
止されている状態における前記係止リングの先端部の容
器口部側に、前記係止リングが前記環状突出部の下面と
係合する際のガイド面となる面取り部が設けられている
ことを特徴とする手段とした。
As means for solving the above-mentioned problems, according to the first aspect of the present invention, a screw portion and a mouth portion of a container provided with an annular projecting portion below the screw portion are provided in a spiral state. A lid for covering the opening of the container mouth portion with a crown, the annular sealing portion hanging down from the inner surface of the top surface portion and closely contacting the opening wall of the container, and the container mouth portion hanging down from the periphery of the top surface portion and inward. A skirt portion having a screw portion to be screwed with the screw, a tamper evidence ring formed through a weakened portion that can be cut from the lower end of the skirt portion, After completely screwing the lid provided with the locking ring folded back into the container mouth, the screwing of the lid is loosened so that the locking ring is annularly projecting from the container mouth. , The weakened portion breaks and the tamper In a locking structure of a container and a lid having a tamper-evidence formed so that a bidence ring remains at the container mouth, the lower surface of the annular protrusion of the container mouth is formed in a substantially horizontal plane, and the lid is A chamfered portion serving as a guide surface when the locking ring engages with the lower surface of the annular protrusion is provided on the container mouth side of the distal end portion of the locking ring locked in the container mouth portion. The means is characterized in that:

【0009】請求項2記載の発明では、前記弱化部が、
スカート部の下端面とタンパーエビデンスリングの上端
面との間に形成された隙間の部分の円周方向の数カ所
に、該スカート部下端面と該タンパーエビデンスリング
の上端面とを連結する薄肉部を設けることによって形成
されており、更に、前記隙間の薄肉部が設けられていな
い部分のタンパーエビデンスリングの上端面には、他の
部分よりも上方へ突出した凸状部が数カ所設けられてお
り、前記蓋が容器口部に係止されていく過程において、
前記面取り部の下端最小径部の位置が環状突出部の最大
径部を乗り越える時には、係止リングが外周方向に押し
広げられながら、薄肉部が変形し、前記凸状部の上端面
とスカート部の下端面とが密着するまで隙間が狭くな
り、一方、前記面取り部の上端部が環状突出部を乗り越
えて該環状突出部の下面に係合するときには、前記隙間
が広がることで、面取り部が環状突出部を乗り越えやす
くしたことを特徴とする手段とした。
According to the second aspect of the present invention, the weakening portion includes:
Thin portions are provided at several places in the circumferential direction of the gap formed between the lower end surface of the skirt portion and the upper end surface of the tamper evidence ring to connect the lower end surface of the skirt portion and the upper end surface of the tamper evidence ring. Further, on the upper end surface of the tamper evidence ring of the portion where the thin portion of the gap is not provided, several convex portions protruding upward from other portions are provided, In the process of the lid being locked to the container mouth,
When the position of the minimum diameter portion at the lower end of the chamfer passes over the maximum diameter portion of the annular protrusion, the thin portion is deformed while the locking ring is pushed out in the outer peripheral direction, and the upper end surface of the convex portion and the skirt portion are deformed. The gap becomes narrower until the lower end surface of the chamfered portion comes into close contact with the lower end surface. Means are characterized in that it is easy to get over the annular protrusion.

【0010】請求項3記載の発明では、前記蓋の環状密
封部が、弱化部の破断の後まで前記容器の開口部壁と密
接状態を継続しうる長さを備えていることを特徴とする
手段とした。
[0010] The invention according to claim 3 is characterized in that the annular sealing portion of the lid has a length capable of maintaining close contact with the opening wall of the container until after the weakened portion is broken. Means.

【0011】[0011]

【発明の作用および効果】請求項1記載の発明にあって
は、容器口部の環状突出部の下面を略水平面状に形成さ
せ、蓋体のタンパーエビデンスリングに設けられた係止
リングの先端部の容器口部側に、係止リングが環状突出
部の下面に係合する際のガイド面となる面取り部が設け
られており、容器口部に蓋を螺合する時、蓋の係止リン
グが容器の環状突出部を乗り越える際に、薄肉部が支点
となって外周方向に押し広げられるので、押し広げられ
た係止リング先端部の容器口部側に設けられている内側
下方向に傾斜する面取り部の最下端位置となる最小径部
の位置が上方に上がる。そして、面取り部の最下端位置
となる最小径部の位置が面取りされていない部分より下
方に位置しているので、容器の環状突出部の最大径部を
係止リングの面取り部の最小径部が乗り越えるまで蓋を
閉めると、押し広げられた係止リングが薄肉部を支点と
して元の状態(内側方向に)に戻り始め、面取り部の上
端に位置する先端部の面取りされていない部分の位置が
下方に下がり、面取り部の上端が環状突出部の下面側に
降下すると、面取りされていない部分は容器の環状突出
部下面の略水平面部と概ね接触するような係止状態とな
る。従って、容器口部の環状突出部下端の略水平面部と
蓋の係止リングの先端部とに隙間がほとんど生じないの
で、蓋を開ける際に、弱化部が切れるまでに必要な蓋の
ネジ回転数を増加させる必要がないので、消費者は無駄
に蓋を回す必要がなく、容器や蓋もコンパクトになり材
料や包装の合理化につながる。
According to the first aspect of the present invention, the lower surface of the annular projecting portion of the container mouth is formed in a substantially horizontal plane, and the tip of the locking ring provided on the tamper evidence ring of the lid body. A chamfered portion serving as a guide surface when the locking ring engages with the lower surface of the annular projection is provided on the container mouth side of the portion, and when the lid is screwed into the container mouth, the lid is locked. When the ring rides over the annular protrusion of the container, the thin portion serves as a fulcrum and is pushed outward in the outer peripheral direction. The position of the minimum diameter portion that is the lowermost position of the inclined chamfered portion rises upward. And since the position of the minimum diameter part which is the lowermost position of the chamfered part is located below the part which is not chamfered, the maximum diameter part of the annular projecting part of the container is set to the minimum diameter part of the chamfered part of the locking ring. When the lid is closed until the vehicle gets over, the extended locking ring starts to return to its original state (inward) with the thin part as a fulcrum, and the position of the unchamfered part of the tip located at the upper end of the chamfered part When the upper end of the chamfered portion descends to the lower surface side of the annular protrusion, the portion that is not chamfered is brought into a locked state such that the portion substantially contacts the substantially horizontal surface of the lower surface of the annular protrusion of the container. Therefore, there is almost no gap between the substantially horizontal surface at the lower end of the annular projecting portion of the container mouth and the tip of the locking ring of the lid. When opening the lid, the screw rotation of the lid required until the weakened portion is cut off when opening the lid. Since there is no need to increase the number, consumers do not need to turn the lid wastefully, and the containers and lids are made compact, which leads to streamlining of materials and packaging.

【0012】請求項2記載の発明にあっては、前記弱化
部が、スカート部の下端面とタンパーエビデンスリング
の上端面との間に形成された隙間の部分の円周方向の数
カ所に、該スカート部下端面と該タンパーエビデンスリ
ングの上端面とを連結する薄肉部を設けることによって
形成されており、更に、前記隙間の薄肉部が設けられて
いない部分のタンパーエビデンスリングの上端面には、
他の部分よりも上方へ突出した凸状部が数カ所設けられ
ており、前記蓋が容器口部に係止されていく過程におい
て、前記面取り部の下端最小径部の位置が環状突出部の
最大径部を乗り越える時には、係止リングが外周方向に
押し広げられながら、薄肉部が変形し、前記凸状部の上
端面とスカート部の下端面とが密着するまで隙間が狭く
なり、一方、前記面取り部の上端部が環状突出部を乗り
越えて該環状突出部の下面に係合するときには、前記隙
間が広がることで、面取り部が環状突出部を乗り越えや
すくした構成とされる。つまり、図8(イ),(ロ)に
示す従来の技術では、環状突出部の最大外径部を係止リ
ングの最小径部(最小内径部)が通過しないと係止リン
グが環状突出部の下面に入り込めないが、図3(イ),
(ロ)に示す本発明では、従来の技術よりも早い時期に
面取り部の下端である最小径部が通過すると、次第に係
止リングが環状突出部の下面に入り込み始める。その結
果、面取りしていない部分が環状突出部の最大外径部を
早期に通過する。従って、図3(ロ)に示すように環状
突出部の下面と係止リングとの隙間が、従来(図8
(ロ))に比べて非常に少ない結果となる。
[0012] In the invention according to claim 2, the weakened portion is provided at several places in the circumferential direction of a gap formed between the lower end surface of the skirt portion and the upper end surface of the tamper evidence ring. It is formed by providing a thin portion connecting the lower end surface of the skirt portion and the upper end surface of the tamper evidence ring, and further, the upper end surface of the tamper evidence ring in a portion where the thin portion of the gap is not provided,
There are provided several convex portions protruding above other portions, and in the process of locking the lid to the container mouth, the position of the lower end minimum diameter portion of the chamfered portion is the maximum of the annular projecting portion. When climbing over the diameter portion, the thin portion is deformed while the locking ring is expanded in the outer peripheral direction, and the gap becomes narrower until the upper end surface of the convex portion and the lower end surface of the skirt portion are in close contact with each other. When the upper end of the chamfer is over the annular protrusion and engages with the lower surface of the annular protrusion, the gap is widened, so that the chamfer can easily climb over the annular protrusion. In other words, in the prior art shown in FIGS. 8A and 8B, the locking ring is not allowed to pass unless the minimum diameter portion (minimum inner diameter portion) of the locking ring passes through the maximum outer diameter portion of the annular projection portion. 3 (a),
In the present invention shown in (b), when the minimum diameter portion, which is the lower end of the chamfered portion, passes earlier than in the prior art, the locking ring gradually starts to enter the lower surface of the annular protrusion. As a result, the portion that has not been chamfered passes through the maximum outer diameter portion of the annular projection early. Therefore, as shown in FIG. 3B, the gap between the lower surface of the annular protruding portion and the locking ring is smaller than that of the related art (FIG.
The result is very small compared to (b)).

【0013】請求項3記載の発明にあっては、蓋の環状
密封部において、弱化部の破断の後まで容器の開口部壁
と密接状態を継続しうる長さが備えられている。つま
り、蓋の天面部の内側に設けられた環状密封部の長さ
を、蓋を緩める方向へ回動させて弱化部が切断させた後
まで容器の開口部壁と環状密封部との密接状態が継続し
得る長さにしてあるので、容器内に飲料を充填し、蓋を
容器口部に螺合して係止リングを環状突出部に係止させ
て密封した容器を出荷し、店頭に陳列されている場合
に、その容器を手に取った消費者が、仮に、蓋を緩める
方向へ回動させて弱化部を破断させる直前で止めてその
商品を元の陳列棚に戻したとしても、その容器の密封性
は維持されているので、飲料が漏れたり、腐敗したりす
ると言う問題はない。従って、タンパーエビデンスリン
グの破断の有無を確認して商品を購入すれば、確実に開
封の有無が確認できる。
According to the third aspect of the present invention, the annular sealing portion of the lid is provided with a length capable of maintaining a close contact with the opening wall of the container until the weakened portion is broken. In other words, the length of the annular sealing portion provided inside the top surface of the lid is rotated in the direction in which the lid is loosened, so that the opening wall of the container and the annular sealing portion are in close contact with each other until the weakened portion is cut. The container is filled with beverage, the lid is screwed into the container mouth, the locking ring is locked to the annular protrusion, and the sealed container is shipped. Even if the consumer picks up the container when it is displayed, even if the consumer turns it in the direction of loosening the lid and stops just before breaking the weakened part and returns the product to the original display shelf, However, since the hermeticity of the container is maintained, there is no problem that the beverage leaks or spoils. Therefore, if the product is purchased after confirming whether the tamper evidence ring has been broken or not, the presence or absence of opening can be surely confirmed.

【0014】[0014]

【発明の実施の形態】以下、この発明を図面に基づいて
詳細に説明する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings.

【0015】(実施の形態1)実施の形態1は請求項1
に記載の発明に対応する容器と蓋の係止構造である。
(Embodiment 1) Embodiment 1 is a first embodiment.
A locking structure of a container and a lid according to the invention described in (1).

【0016】まず、構成を説明する。図1は実施の形態
1における容器と蓋の係止構造を示す図で、容器Aは、
ポリエチレンテレフタレート(PET)樹脂やポリプロ
ピレン樹脂等の合成樹脂製2軸延伸ブロー成形品で、飲
料やその他の液体等が収納される。なお、図1に示すよ
うなネジ部とその下方に周方向に延びている突出部を備
えた口部を有していれば、容器Aとしては、通常の合成
樹脂製のブロー成形品やガラス瓶や金属缶等であっても
良い。容器Aの口部には、ネジ部8と、該ネジ部8の下
に環状突出部6が設けられている。この環状突出部6
は、容器側の係止構造であり、最大外径部6aと下面の
略水平面部6bを有する。
First, the configuration will be described. FIG. 1 is a diagram showing a locking structure between a container and a lid according to the first embodiment.
A biaxially stretch blow-molded product made of a synthetic resin such as a polyethylene terephthalate (PET) resin or a polypropylene resin, and stores beverages and other liquids. In addition, as long as it has a screw portion as shown in FIG. 1 and a mouth portion provided with a projection portion extending in the circumferential direction below the screw portion, the container A can be a general synthetic resin blow molded product or a glass bottle. Or a metal can. At the mouth of the container A, a screw portion 8 and an annular protrusion 6 are provided below the screw portion 8. This annular protrusion 6
Is a container side locking structure, which has a maximum outer diameter portion 6a and a substantially horizontal surface portion 6b on the lower surface.

【0017】蓋Bは、ポリエチレンやポリプロピレン等
の合成樹脂製の射出成形品で、前記容器Aの口部に、螺
旋状態で被冠し容器口部の開口部を密封させる。
The lid B is an injection-molded product made of a synthetic resin such as polyethylene or polypropylene. The lid of the container A is spirally covered with the mouth of the container A to seal the opening of the container mouth.

【0018】この蓋Bは、天面部1の内面から垂下し容
器の開口部内壁に密封するインナープラグ5と、前記天
面部1の周縁から垂下し内側に容器Aの口部のネジ8に
螺合するネジ部9を有するスカート部2と、該スカート
部2の下端から切断可能な弱化部3を介して一体的に形
成されたタンパーエビデンスリング4と、該タンパーエ
ビデンスリング4の下端部から薄肉部7aを介して内側
に折り返された係止リング7とを備えている。
The lid B has an inner plug 5 which hangs down from the inner surface of the top surface 1 and seals the inner wall of the opening of the container. A skirt portion 2 having a screw portion 9 to be joined, a tamper evidence ring 4 integrally formed via a weakened portion 3 cutable from a lower end of the skirt portion 2, and a thin portion from a lower end portion of the tamper evidence ring 4 And a locking ring 7 folded inward through a portion 7a.

【0019】スカート部2の下端面とタンパーエビデン
スリング4の上端面との間に形成された隙間11の部分
の円周方向の数カ所に、スカート部2の下端面とタンパ
ーエビデンスリング4の上端面とを連結する薄肉部3a
を設けることによって形成されており、更に、隙間11
の薄肉部3aが設けられていない部分のタンパーエビデ
ンスリング4の上端面には、他の部分よりも上方へ突出
した凸状部3bが数カ所設けられており、これらの部分
は隙間11が狭くなっている。弱化部3は、射出成形に
より同時形成する。
The lower end surface of the skirt portion 2 and the upper end surface of the tamper evidence ring 4 are provided at several places in the circumferential direction of the gap 11 formed between the lower end surface of the skirt portion 2 and the upper end surface of the tamper evidence ring 4. Thin portion 3a connecting
Are provided, and the gap 11
On the upper end surface of the tamper evidence ring 4 where the thin portion 3a is not provided, several convex portions 3b protruding upward from other portions are provided, and in these portions, the gap 11 becomes narrower. ing. The weakened portion 3 is formed simultaneously by injection molding.

【0020】前記係止リング7は、成形後、薄肉部7a
を支点として内側に折り返された環状リングで、図1及
び図2に示すように、蓋Bが容器口部に係止される状態
における先端部が、円周方向に略水平又は水平面から±
20度の範囲で傾斜している平面部7bとして形成され
ると共に、該平面部7bの内側端部から内側下方向に傾
斜する面取りをした面取り部7cが円周方向に設けられ
ており、該面取り部7cの内周端が最小内径部7dとさ
れている。この面取り部7cは、タンパーエビデンスリ
ング4の凸状部3bの上端面とスカート部2の下端面と
の隙間11に近い垂直方向長さを有するように面取りさ
れているのが、環状突出部6の下面との隙間を少なくす
るという観点から好ましく、また係止リング7と環状突
出部6との係合力を強くして蓋のタンパーエビデンス性
をより確実にするという観点からは、平面部7bの半径
方向幅は0.3mm以上にするのが好ましい。
After forming the locking ring 7, the thin portion 7a
As shown in FIGS. 1 and 2, the distal end in a state where the lid B is locked to the container mouth is circumferentially substantially horizontal or ± from a horizontal plane.
A chamfered portion 7c, which is formed as a flat portion 7b inclined at a range of 20 degrees and is chamfered from the inner end of the flat portion 7b inward and downward, is provided in a circumferential direction. The inner peripheral end of the chamfered portion 7c is a minimum inner diameter portion 7d. The chamfered portion 7 c is chamfered so as to have a vertical length close to the gap 11 between the upper end surface of the convex portion 3 b of the tamper evidence ring 4 and the lower end surface of the skirt portion 2. From the viewpoint of reducing the gap between the flat portion 7b and the lower surface of the flat portion 7b, from the viewpoint of increasing the engagement force between the locking ring 7 and the annular projecting portion 6 to further ensure the tamper-evidence of the lid. The radial width is preferably 0.3 mm or more.

【0021】次に、作用を説明する。Next, the operation will be described.

【0022】[容器口部への蓋螺合作用]図3に基づい
て容器口部への蓋Bの螺合作用について説明すると、容
器Aに内容物を充填した後、容器口部に蓋Bを螺合する
時、蓋Bの係止リング7が容器Aの環状突出部6を乗り
越える際に、図3(イ)に示すように、薄肉部7aが支
点となって外周方向に押し広げられるので、押し広げら
れた係止リング7の先端の平面部7bから内側下方向に
傾斜する面取り部7cの最下端位置となる最小径部7d
の位置が上方にあがる。また、このとき、環状突出部6
と係止リング7との間に発生する強い摩擦抵抗により、
タンパーエビデンスリング4全体が下降し難くなり、一
方、スカート部2とそれより上方部分は、螺合に伴って
一定量ずつ下降するので、タンパーエビデンスリング4
とスカート部2の境界にある弱化部3の隙間11は、凸
状部3bの上端面がスカート部2の下端面と接触する位
置まで狭くなる。
[Operation of screwing lid on container opening] Referring to FIG. 3, the operation of screwing lid B on the opening of the container will be described. When the locking ring 7 of the lid B gets over the annular projecting portion 6 of the container A, the thin portion 7a serves as a fulcrum and is pushed outward in the outer peripheral direction as shown in FIG. Therefore, the smallest diameter portion 7d which is the lowermost position of the chamfered portion 7c which is inclined inward and downward from the flat portion 7b at the tip of the extended locking ring 7
Rises upward. At this time, the annular protrusion 6
Due to the strong frictional resistance generated between the
The entire tamper evidence ring 4 becomes difficult to descend, while the skirt portion 2 and the upper portion thereof descend by a fixed amount with the screw engagement.
The gap 11 between the weakened portion 3 at the boundary between the skirt portion 2 and the skirt portion 2 is narrowed to a position where the upper end surface of the convex portion 3b contacts the lower end surface of the skirt portion 2.

【0023】そして、面取り部7cの最下端位置となる
最小径部7dの位置が平面部7bより下方に位置してい
るので、容器Aの環状突出部6の最大外径部6aを係止
リング7の面取り部7cの最小径部7dが乗り越えるま
で蓋Bを閉めると、押し広げられた係止リング7が薄肉
部7aを支点として内側に戻り始めると同時に、環状突
出部6と係止リング7との摩擦抵抗が弱まるので、タン
パーエビデンスリング4全体が下降し始め(隙間11が
元の間隔に戻り始め)、図3(ロ)に示すように、係止
リング7の平面部7bが容器の環状突出部6の略水平面
部6bと概ね接触するような係止状態(0.5mm以内
の僅かな間隙は生ずることがある。)となる。係止リン
グ7の平面部7bが容器Aの環状突出部6の略水平面部
6bと概ね接触するような係止状態(0.5mm以内の
僅かな間隙は生ずることがある)となる。
Since the position of the minimum diameter portion 7d, which is the lowermost position of the chamfered portion 7c, is located below the flat portion 7b, the maximum outer diameter portion 6a of the annular projecting portion 6 of the container A is locked with the locking ring. When the lid B is closed until the minimum diameter portion 7d of the chamfered portion 7c of FIG. 7 gets over, the extended locking ring 7 starts to return inward with the thin portion 7a as a fulcrum, and at the same time, the annular projecting portion 6 and the locking ring 7 Since the frictional resistance with the tamper-evidence ring 4 is weakened, the entire tamper evidence ring 4 starts to descend (the gap 11 starts to return to the original interval), and as shown in FIG. An engagement state (a small gap of less than 0.5 mm may occur) that is substantially in contact with the substantially horizontal surface portion 6b of the annular projecting portion 6 is obtained. The locking state is such that the flat portion 7b of the locking ring 7 is substantially in contact with the substantially horizontal surface portion 6b of the annular protrusion 6 of the container A (a slight gap of 0.5 mm or less may occur).

【0024】すなわち、面取り部7cを形成したこと
で、面取り部7cの最下端位置が最小径部7dとなり、
図8に示す従来構造のように、係止リング107の平面
部107bの内端を最小径部とする場合に比べ、最小径
部7dの位置が下方となるため、蓋Bを閉めるストロー
ク量が少ないうちに係止リング7が戻りを開始し、容器
口部の環状突出部6の下端に形成された略水平面部6b
と蓋Bの係止リング7の平面部7bとに大きな隙間が生
じることがない(図3(ロ)参照)。
That is, by forming the chamfered portion 7c, the lowermost position of the chamfered portion 7c becomes the minimum diameter portion 7d,
Since the position of the minimum diameter portion 7d is lower than when the inner end of the flat portion 107b of the locking ring 107 is the minimum diameter portion as in the conventional structure shown in FIG. 8, the stroke amount for closing the lid B is smaller. The locking ring 7 starts to return in a short time, and a substantially horizontal surface portion 6b formed at the lower end of the annular protrusion 6 of the container mouth portion
There is no large gap between the locking ring 7 and the flat portion 7b of the lid B (see FIG. 3B).

【0025】[開蓋作用]図4に基づいてタンパーエビ
デンス作用について説明すると、蓋Bの螺合を緩める
と、図4(イ)に示すように、係止リング7の平面部7
bと環状突出部6の略水平面部6bとが係合を保ったま
ま、蓋Bのスカート部2のみが上方に移動し、弱化部3
に集中応力が作用する。この蓋Bの螺合をさらに緩めて
ゆくと、図4(ロ)に示すように、弱化部3が弾性限界
に至るまでは伸び変形し、ついには、図4(ハ)に示す
ように、弱化部3が破断し、タンパーエビデンスリング
4が容器口部に残る。その後の蓋Bの開閉は、タンパー
エビデンスリング4を容器口部に残したままで行われる
ことになる。尚、略水平面部6bと蓋Bの係止リング7
の平面部7bとの間に僅かな隙間がある場合でも、螺合
を緩める方向に蓋を回動させ始めると直ちに両者は係合
するので、蓋Bの回動量はあまり変わらない。
[Opening Action] The tamper evidence action will be described with reference to FIG. 4. When the screw of the cover B is loosened, as shown in FIG.
b and the skirt portion 2 of the lid B moves upward while the engagement with the substantially horizontal surface portion 6b of the annular projecting portion 6 is maintained.
Concentrated stress acts on When the screwing of the lid B is further loosened, as shown in FIG. 4 (b), the weakened portion 3 expands and deforms until it reaches the elastic limit, and finally, as shown in FIG. 4 (c), The weakened portion 3 breaks, leaving the tamper evidence ring 4 at the container mouth. The subsequent opening and closing of the lid B is performed with the tamper evidence ring 4 left at the container opening. The locking ring 7 between the substantially horizontal surface portion 6b and the cover B
Even if there is a slight gap with the flat surface portion 7b, as soon as the lid starts to rotate in the direction of loosening the screw engagement, both are engaged, so that the amount of rotation of the lid B does not change much.

【0026】上記のように、容器口部へ蓋Bを螺合させ
る際、容器口部の環状突出部6の下端に形成された略水
平面部6bと蓋Bの係止リング7の平面部7bとに大き
な隙間が生じることがないため、蓋Bを開ける際に、弱
化部3が切れるまでに必要な蓋Bのネジ回転数を増加さ
せる必要がないので、消費者は無駄に蓋Bを回す必要が
なくなり、煩わしさが解消される。
As described above, when the cover B is screwed into the container mouth, the substantially horizontal surface portion 6b formed at the lower end of the annular protrusion 6 of the container mouth and the flat portion 7b of the locking ring 7 of the cover B. When the cover B is opened, there is no need to increase the number of screw rotations of the cover B required before the weakened portion 3 is cut off, so that the consumer turns the cover B needlessly. This eliminates the need and reduces the hassle.

【0027】さらに、弱化部3が切れるまでに必要な蓋
Bのネジ回転数が減少するし、また、インナープラグ5
を短くしても弱化部3が切れる前にインナープラグ5と
容器Aの開口部内壁10とのシール切れ(インナープラ
グ5と開口部内壁10との密接状態が解除される状態)
が発生してタンパーエビデンス機能が損なわれることは
なく、従来に比べて容器口部と蓋Bの縦方向の長さを短
くでき、容器Aや蓋Bがコンパクトになる。
Further, the number of screw rotations of the cover B required until the weakened portion 3 is cut off is reduced, and the inner plug 5
Before the weakened portion 3 is cut even if the length is shortened, the seal between the inner plug 5 and the inner wall 10 of the opening of the container A is broken (the state of close contact between the inner plug 5 and the inner wall 10 of the opening is released).
Does not occur and the tamper evidence function is not impaired, the length of the container opening and the lid B in the vertical direction can be made shorter than in the conventional case, and the container A and the lid B can be made compact.

【0028】次に、効果を説明する。タンパーエビデン
ス性を有する容器Aと蓋Bの係止構造において、蓋Bの
タンパーエビデンスリング4に設けられた係止リング7
の先端部を円周方向に平面部7bに形成し、更に該平面
部7bの内側端部から内側下方向に傾斜する面取り部7
cを円周方向に設け、容器口部の環状突出部6の下面を
略水平面状6bに形成させたため、部品点数を増加させ
ることなく面取り部7cを追加しただけでありながら、
蓋Bを開ける際に、弱化部3が切れるまでに必要な蓋B
のネジ回転数を増加させることなく、容器Aや蓋Bをコ
ンパクトにすることができる容器Aと蓋Bの係止構造を
提供することができる。
Next, the effects will be described. In the locking structure between the container A having the tamper-evident property and the lid B, the locking ring 7 provided on the tamper-evidence ring 4 of the lid B
Is formed on the plane portion 7b in the circumferential direction, and further, the chamfered portion 7 is inclined downward from the inner end of the plane portion 7b.
c is provided in the circumferential direction, and the lower surface of the annular protruding portion 6 of the container mouth is formed in a substantially horizontal plane 6b. Therefore, the chamfered portion 7c is simply added without increasing the number of parts.
When opening the lid B, the lid B required until the weakened portion 3 is cut
It is possible to provide a locking structure for the container A and the lid B that can make the container A and the lid B compact without increasing the screw rotation speed.

【0029】(その他の実施の形態)(Other Embodiments)

【0030】以上、本発明を実施の形態1により説明し
てきたが、具体的な構成はこれに限られるものでなく、
少なくとも請求項1に記載の構成を備えている限り、様
々な変更や追加が施されても請求項1に記載された発明
に含まれる。
Although the present invention has been described with reference to the first embodiment, the specific configuration is not limited to this.
Various changes and additions are included in the invention described in claim 1 as long as at least the configuration described in claim 1 is provided.

【0031】例えば、実施の形態1では、面取り部とし
て平面で面取りした断面形状を持つものを示したが、曲
面で面取りしても良い。
For example, in the first embodiment, the chamfered portion has a sectional shape chamfered by a plane, but may be chamfered by a curved surface.

【0032】実施の形態1では、係止リングが円周方向
に環状で設けられた例を示したが、係止リングが円周方
向に等間隔で複数設けられるような分割タイプのものに
も適用することができる。
In the first embodiment, the example in which the locking ring is provided in a ring shape in the circumferential direction is shown. However, a split type in which a plurality of locking rings are provided at equal intervals in the circumferential direction is also used. Can be applied.

【0033】実施の形態1では、蓋のネジ部を有するス
カート部とタンパーエビデンスリングを一体成形した構
成のものを示したが、実開昭60−123353号公
報、特開昭63−44461号公報、実開平2−138
148号公報に開示されているような、容器の開口部と
の密封面を形成する部分とネジ部を有するスカート部を
備えた蓋とタンパーエビデンスリングとをそれぞれ別に
成形した後、両者を嵌合等の適宜手段で一体化させたも
のでもよい。
In the first embodiment, the skirt portion having the screw portion of the lid and the tamper evidence ring are integrally formed. However, Japanese Unexamined Utility Model Publication No. Sho 60-123353 and Japanese Unexamined Patent Publication No. Sho 63-44461 disclose the present invention. , Actual Kaihei 2-138
No. 148, a lid forming a portion forming a sealing surface with an opening of a container, a lid having a skirt portion having a screw portion, and a tamper evidence ring are separately molded, and then they are fitted together. And other suitable means.

【0034】また、容器口部の開口部を密封する環状密
封部は、開口部の内壁と密接するインナープラグ5に限
らず、特表平9−501636号公報に開示されている
ような、開口部の頂面及び外壁と密接する環状密封部で
も良いし、または実開昭61−27844号公報や実開
平4−91845号公報に開示されているような、開口
部の頂面と密接する環状密封部でも良いし、更には実開
昭62−99539号公報の第4〜5図に開示されてい
るような、開口部の外壁と密接する環状密封部でもよ
い。但し、何れのタイプの蓋であっても、蓋を緩める方
向へ回動させて弱化部が破断するまでは、密封状態を維
持し続けるような長さを備えた環状密封部であること
が、保管中及び店頭陳列中の容器の密封性の維持と内容
物の品質の劣化を防止するという観点及びタンパーエビ
デンス性能を確実に発揮させるという観点からは好まし
い。
The annular sealing portion for sealing the opening of the container opening is not limited to the inner plug 5 which is in close contact with the inner wall of the opening, but may be an opening as disclosed in JP-A-9-501636. An annular sealing portion that is in close contact with the top surface and the outer wall of the opening may be used, or an annular sealing portion that is in close contact with the top surface of the opening as disclosed in Japanese Utility Model Laid-Open No. 61-27844 and Japanese Utility Model Laid-Open No. 4-91845. It may be a sealing portion or an annular sealing portion which is in close contact with the outer wall of the opening as disclosed in FIGS. 4 to 5 of Japanese Utility Model Application Laid-Open No. 62-9939. However, regardless of the type of lid, it is an annular sealing portion having a length that maintains a sealed state until the weakened portion is broken by rotating the lid in the loosening direction, It is preferable from the viewpoint of maintaining the tightness of the container during storage and display at the store, preventing the deterioration of the quality of the contents, and ensuring the tamper evidence performance.

【0035】更にまた、環状密封部は図5の(イ),
(ロ),(ハ)に示されているような、蓋本体とは別体
の中蓋Cの天板内面から垂下させても良い。即ち、図6
(イ)は、タンパーエビデンスリング4の係止リング7
の先端部が環状突出部6の下面に係合している状態を示
し、図5(ロ)は、蓋Bを緩める方向に回動させて蓋B
の天面部内面と中蓋Cの天板外面とが離れた状態を示
し、図5(ハ)は、蓋Bを更に緩める方向に回動させて
弱化部3を破断させた状態を示す。この状態では中蓋C
のインナープラグ5が開口部の内壁と密接しているの
で、開口部の密封状態は維持されている。更に蓋Bを回
動させて容器口部から取り外すと、蓋Bの内面側に形成
されているネジ部の内径が中蓋Cの天板の外径よりも大
径となっているため、中蓋Cも一緒に外れるので、開口
部の密封が解除される。
Further, the annular sealing portion is shown in FIG.
As shown in (b) and (c), the inner lid C may be suspended from the inner surface of the top plate separate from the lid body. That is, FIG.
(A) shows the locking ring 7 of the tamper evidence ring 4
5B shows a state in which the front end of the cover B is engaged with the lower surface of the annular protrusion 6. FIG.
5C shows a state in which the inner surface of the top surface portion is separated from the outer surface of the top plate of the inner lid C, and FIG. 5C shows a state in which the weakened portion 3 is broken by rotating the lid B in a further loosening direction. In this state, the inner lid C
The inner plug 5 is in close contact with the inner wall of the opening, so that the sealed state of the opening is maintained. When the lid B is further rotated and removed from the container opening, the inner diameter of the screw portion formed on the inner surface side of the lid B is larger than the outer diameter of the top plate of the inner lid C. Since the lid C comes off together, the sealing of the opening is released.

【図面の簡単な説明】[Brief description of the drawings]

【図1】実施の形態1における容器と蓋の係止構造を示
す図である。
FIG. 1 is a diagram showing a locking structure between a container and a lid according to the first embodiment.

【図2】実施の形態1における係止構造のうち蓋側の係
止リングを示す拡大断面図である。
FIG. 2 is an enlarged cross-sectional view showing a locking ring on a lid side of the locking structure according to the first embodiment.

【図3】実施の形態1の係止構造を備えた容器で容器口
部に蓋を螺合する作用を説明する図である。尚、図中の
破線は凸状部3bの高さ位置を示すための想像線であ
る。
FIG. 3 is a diagram illustrating an operation of screwing a lid to a container opening in the container having the locking structure according to the first embodiment. The broken line in the drawing is an imaginary line for indicating the height position of the convex portion 3b.

【図4】実施の形態1の係止構造を備えた容器で開蓋作
用を説明する図である。
FIG. 4 is a diagram for explaining a lid opening operation in the container having the locking structure according to the first embodiment.

【図5】環状密封部として蓋本体とは別体の中蓋の天板
内面から垂下した他の実施の形態の容器と蓋の係止構造
を示す図である。
FIG. 5 is a diagram showing a locking structure of a container and a lid according to another embodiment, which hangs from an inner surface of a top plate of a middle lid separate from a lid main body as an annular sealing portion.

【図6】従来の容器と蓋の係止構造を示す図である。FIG. 6 is a diagram showing a conventional container and lid locking structure.

【図7】従来の係止構造のうち蓋側の係止リングを示す
拡大断面図である。
FIG. 7 is an enlarged cross-sectional view showing a lid-side locking ring in a conventional locking structure.

【図8】従来の係止構造を備えた容器で容器口部に蓋を
螺合する作用を説明する図である。尚、図中の破線は凸
状部103bの高さ位置を示すための想像線である。
FIG. 8 is a diagram illustrating an operation of screwing a lid to a container mouth in a container having a conventional locking structure. The broken line in the drawing is an imaginary line for indicating the height position of the convex portion 103b.

【符号の説明】[Explanation of symbols]

1 天面部 2 スカート部 3 弱化部 4 タンパーエビデンスリング 5 インナープラグ(環状密封部) 6 環状突出部 6a 最大外径部 6b 略水平面部 7 係止リング 7a 薄肉部 7b 略水平面部 7c ガイド部 7d 最小内径部 8 ネジ部 9 ネジ部 10 開口部内壁 DESCRIPTION OF SYMBOLS 1 Top surface part 2 Skirt part 3 Weakened part 4 Tamper evidence ring 5 Inner plug (annular sealing part) 6 Annular protruding part 6a Maximum outer diameter part 6b Substantially horizontal plane part 7 Locking ring 7a Thin part 7b Substantially horizontal plane part 7c Guide part 7d Minimum Inside diameter part 8 Screw part 9 Screw part 10 Opening inner wall

フロントページの続き Fターム(参考) 3E084 AA04 AA12 AA24 AA26 AB01 BA01 CA01 CC04 CC05 DA01 DB05 DB12 DC04 DC05 FA09 FB01 GA04 GB04 GB08 HA03 HA10 HB02 HB05 HC03 HD04 KA13 KB01 LA05 Continued on front page F-term (reference) 3E084 AA04 AA12 AA24 AA26 AB01 BA01 CA01 CC04 CC05 DA01 DB05 DB12 DC04 DC05 FA09 FB01 GA04 GB04 GB08 HA03 HA10 HB02 HB05 HC03 HD04 KA13 KB01 LA05

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 ネジ部と該ネジ部の下に環状突出部が設
けられた容器の口部に、螺旋状態で被冠し容器口部の開
口部を密封させる蓋であって、 天面部の内面側に設けられた容器の開口部壁に密接する
環状密封部と、 前記天面部の周縁から垂下し内側に容器口部のネジに螺
合するネジ部を有するスカート部と、 該スカート部の下端から切断可能な弱化部を介して形成
されたタンパーエビデンスリングと、 該タンパーエビデンスリングの下端部から薄肉部を介し
て内側に折り返された係止リングとを備えた前記蓋を、
前記容器口部に完全に螺合させた後、 前記蓋の螺合を緩めることにより前記係止リングが前記
容器口部の環状突出部に係合し、前記弱化部が破断し、
タンパーエビデンスリングが容器口部に残るように形成
されたタンパーエビデンス性を有する容器と蓋の係止構
造において、 前記容器口部の環状突出部の下面が略水平面状に形成さ
れており、 前記蓋が容器口部に係止されて行く過程における前記係
止リングの先端部の容器口部側に、前記係止リングが前
記環状突出部を乗り越える際のガイドとなる面取り部が
設けられていることを特徴とするタンパーエビデンスリ
ング機能を有する容器と蓋の係止構造。
1. A lid for spirally covering a mouth portion of a container provided with a screw portion and an annular protrusion below the screw portion and sealing the opening of the container mouth portion, An annular sealing portion closely contacting an opening wall of the container provided on the inner surface side, a skirt portion having a screw portion hanging down from a peripheral edge of the top surface portion and screwing into a screw of the container opening inside, A lid provided with a tamper evidence ring formed via a weakened portion that can be cut from the lower end, and a locking ring folded inward from a lower end of the tamper evidence ring via a thin portion,
After being completely screwed into the container mouth, the locking ring is engaged with the annular projection of the container mouth by loosening the screw of the lid, and the weakened portion is broken,
In a tamper-evidence container-lid locking structure formed so that the tamper-evidence ring remains at the container opening, the lower surface of the annular projection of the container opening is formed in a substantially horizontal plane, A beveled portion serving as a guide when the locking ring gets over the annular protrusion is provided on the container mouth side of the tip of the locking ring in the process of being locked to the container mouth. A container and lid locking structure having a tamper evidence ring function.
【請求項2】 前記弱化部が、スカート部の下端面とタ
ンパーエビデンスリングの上端面との間に形成された隙
間の部分の円周方向の数カ所に、該スカート部下端面と
該タンパーエビデンスリングの上端面とを連結する薄肉
部を設けることによって形成されており、更に、前記隙
間の薄肉部が設けられていない部分のタンパーエビデン
スリングの上端面には、他の部分よりも上方へ突出した
凸状部が数カ所設けられており、 前記蓋が容器口部に係止されていく過程において、前記
面取り部の下端最小径部の位置が環状突出部の最大径部
を乗り越える時には、係止リングが外周方向に押し広げ
られながら、薄肉部が変形し、前記凸状部の上端面とス
カート部の下端面とが密着するまで隙間が狭くなり、 一方、前記面取り部の上端部が環状突出部を乗り越えて
該環状突出部の下面に係合するときには、前記隙間が広
がることで、面取り部が環状突出部を乗り越えやすくし
たことを特徴とする請求項1に記載のタンパーエビデン
スリング機能を有する容器と蓋の係止構造。
2. The lower portion of the skirt portion and the tamper evidence ring are provided at several places in the circumferential direction of a gap formed between the lower end surface of the skirt portion and the upper end surface of the tamper evidence ring. The upper end surface of the tamper evidence ring is formed by providing a thin portion connecting to the upper end surface, and furthermore, the upper end surface of the tamper evidence ring in the portion where the thin portion of the gap is not provided has a protrusion projecting upward from other portions. In the process where the lid is locked to the container mouth, when the position of the lower end minimum diameter portion of the chamfer portion exceeds the maximum diameter portion of the annular protrusion, the locking ring is provided. While being expanded in the outer peripheral direction, the thin portion is deformed, and the gap is narrowed until the upper end surface of the convex portion and the lower end surface of the skirt portion are in close contact with each other. The container having a tamper evidence ring function according to claim 1, wherein, when climbing over and engaging with the lower surface of the annular projection, the gap is widened so that the chamfered portion can easily climb over the annular projection. Locking structure of lid.
【請求項3】 前記蓋の環状密封部が、前記蓋の弱化部
の破断の後まで前記容器の開口部壁との密接状態を継続
し得る長さを備えていることを特徴とする請求項1又は
2に記載のタンパーエビデンスリング機能を有する容器
と蓋の係止構造。
3. The container according to claim 2, wherein the annular sealing portion of the lid has a length capable of maintaining a close contact with the opening wall of the container until after the breakage of the weakened portion of the lid. 3. The locking structure of a container and a lid having a tamper evidence ring function according to 1 or 2.
JP2000008635A 2000-01-18 2000-01-18 Container and lid locking structure Expired - Fee Related JP4494569B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000008635A JP4494569B2 (en) 2000-01-18 2000-01-18 Container and lid locking structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000008635A JP4494569B2 (en) 2000-01-18 2000-01-18 Container and lid locking structure

Publications (2)

Publication Number Publication Date
JP2001199459A true JP2001199459A (en) 2001-07-24
JP4494569B2 JP4494569B2 (en) 2010-06-30

Family

ID=18536876

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000008635A Expired - Fee Related JP4494569B2 (en) 2000-01-18 2000-01-18 Container and lid locking structure

Country Status (1)

Country Link
JP (1) JP4494569B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1445207A1 (en) * 2003-02-07 2004-08-11 Guglielmo Ferrari Screw cap with safety ring of improved reliability
JP2006306482A (en) * 2005-05-02 2006-11-09 Toto Seikei Kk Tamper-evident cap
WO2016194192A1 (en) * 2015-06-04 2016-12-08 ミズホ金属株式会社 Cap seal

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5107998A (en) * 1991-06-14 1992-04-28 Bruno Zumbuhl Tamper proof ring for threaded closures
JPH05509277A (en) * 1989-12-28 1993-12-22 トライ―テック システムズ インターナショナル インコーポレイテッド Opening instruction cap and manufacturing method of the cap
JPH0595862U (en) * 1992-05-29 1993-12-27 ノーヴェンバル Screw type sealing device
JPH0721553U (en) * 1992-09-30 1995-04-18 山村硝子株式会社 Plastic screw caps
US5680945A (en) * 1994-10-31 1997-10-28 Sander; Dieter Tamper evident plastic closure
US5992661A (en) * 1997-04-14 1999-11-30 Zumbuhl; Bruno Tab construction for closures having tamper evident rings

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05509277A (en) * 1989-12-28 1993-12-22 トライ―テック システムズ インターナショナル インコーポレイテッド Opening instruction cap and manufacturing method of the cap
US5107998A (en) * 1991-06-14 1992-04-28 Bruno Zumbuhl Tamper proof ring for threaded closures
JPH0595862U (en) * 1992-05-29 1993-12-27 ノーヴェンバル Screw type sealing device
JPH0721553U (en) * 1992-09-30 1995-04-18 山村硝子株式会社 Plastic screw caps
US5680945A (en) * 1994-10-31 1997-10-28 Sander; Dieter Tamper evident plastic closure
US5992661A (en) * 1997-04-14 1999-11-30 Zumbuhl; Bruno Tab construction for closures having tamper evident rings

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1445207A1 (en) * 2003-02-07 2004-08-11 Guglielmo Ferrari Screw cap with safety ring of improved reliability
JP2006306482A (en) * 2005-05-02 2006-11-09 Toto Seikei Kk Tamper-evident cap
WO2016194192A1 (en) * 2015-06-04 2016-12-08 ミズホ金属株式会社 Cap seal

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