JPH0246463B2 - - Google Patents
Info
- Publication number
- JPH0246463B2 JPH0246463B2 JP60093367A JP9336785A JPH0246463B2 JP H0246463 B2 JPH0246463 B2 JP H0246463B2 JP 60093367 A JP60093367 A JP 60093367A JP 9336785 A JP9336785 A JP 9336785A JP H0246463 B2 JPH0246463 B2 JP H0246463B2
- Authority
- JP
- Japan
- Prior art keywords
- opening
- score line
- tab
- lid
- rivet
- 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.)
- Expired - Lifetime
Links
Landscapes
- Containers Opened By Tearing Frangible Portions (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は開口を容易に行なえるようにした全面
開口用の缶体容器の蓋体に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a lid for a can body container that can be opened from the entire surface and which can be opened easily.
（従来の技術）
従来、この種缶体容器の蓋体としては第１１図
に示すようなものがある。即ち、円形鏡板１００
の周縁沿いに環状をなす全面開口用スコアー線１
０１を設け、その内側の開口端部にタブノーズ１
０２が全面開口用スコアー線１０１上に位置する
ようタブ１０３を固着して構成されている。図
中、１０４は補助スコアー線を示している。(Prior Art) Conventionally, there is a lid body for this type of can body container as shown in FIG. That is, the circular mirror plate 100
Score line 1 for full opening that forms a ring along the periphery of
01, and a tab nose 1 at the inner open end.
The tab 103 is fixed so that the point 02 is located on the score line 101 for opening the entire surface. In the figure, 104 indicates an auxiliary score line.
しかして、蓋体を全面開口する場合は、先ずタ
ブ１０３を引き起こすことにより、円形スコアー
線１０１沿いに鏡板１００の一部を切断し（第１
次開口）、次いでタブ１０３を介して円形スコア
ー線１０１により囲まれた部分を引上げることに
よつて蓋体を全面開口（第２次開口）していた。 Therefore, when opening the lid entirely, first, by pulling up the tab 103, a part of the mirror plate 100 is cut along the circular score line 101 (the first
Then, by pulling up the portion surrounded by the circular score line 101 via the tab 103, the entire lid was opened (secondary opening).
（発明が解決しようとする問題点）
しかし、斯かる従来技術の場合には、第１次開
口した後では、除去自在部分１０５のうち第１次
開口部が、第１２図に示すように缶内に入り込ん
で、これから開口しようとする鏡板部分と直角に
折れ曲がつて同部分の剛性が高くなつているた
め、開口しようとする力（せん断力）が全面開口
用スコアー線１０１に集中せず、その後の全面開
口操作（第２次開口）に非常に大きな力を必要と
し、第１次開口したあとの第２次開口時に大きな
力を入れるため、勢い余つて指を開口片で切つた
り、内容物を飛散させるという問題点があつた。(Problems to be Solved by the Invention) However, in the case of such a prior art, after the first opening, the first opening of the removable portion 105 is located in the can as shown in FIG. It goes inside and bends at right angles to the mirror plate part that is about to be opened, increasing the rigidity of that part, so that the force (shearing force) trying to open it is not concentrated on the score line 101 for opening the entire surface. , the subsequent opening operation (secondary opening) requires a very large amount of force, and since a large amount of force is applied during the second opening after the first opening, the force may be too much and the opening piece may cut the finger. However, there was a problem that the contents were scattered.
そこで、本発明は上記従来技術の問題点を解決
するためになされたもので、その目的とするとこ
ろは、第１次開口力及び第２次開口力をともに小
さくすることにより、容易且つ安全に全面開口で
きるようにした缶体容器の蓋体を提供することに
ある。 Therefore, the present invention has been made to solve the above-mentioned problems of the prior art, and its purpose is to easily and safely reduce both the primary opening force and the secondary opening force. To provide a lid for a can body container which can be opened entirely.
（問題点を解決するための手段）
上記目的を達成するために、本発明にあつて
は、円形鏡板の周縁沿いに環状をなす全面開口用
スコアー線を設けてその内側に除去自在部分を形
成すると共に、該除去自在部分内の開口端部にリ
ベツトを配置し、タブの開口操作部が除去自在部
分にあつて且つタブノーズが全面開口用スコアー
線の半径方向外方に位置するように、前記リベツ
トにタブを起立自在に連結すると共に、開口時に
前記タブノーズを全面開口用スコアー線の半径方
向外方に位置させたままで開口操作を行なうもの
で、前記タブノーズおよびリベツトの近傍におけ
る全面開口用スコアー線を円弧状に形成し、該全
面開口用スコアー線の円弧状部とタブノーズの円
弧状部とを、リベツトを中心とする同心円状に形
成したことを特徴とする。(Means for Solving the Problems) In order to achieve the above object, in the present invention, a ring-shaped score line for the entire opening is provided along the periphery of the circular mirror plate, and a removable portion is formed inside the score line. At the same time, a rivet is arranged at the opening end in the removable part, and the opening operation part of the tab is in the removable part and the tab nose is located radially outward of the score line for full opening. The tab is connected to the rivet so that it can stand up freely, and the opening operation is performed while the tab nose is positioned radially outward of the score line for full opening when opening, and the score line for full opening in the vicinity of the tab nose and the rivet is is formed in an arc shape, and the arc portion of the score line for full opening and the arc portion of the tab nose are formed in concentric circles with the rivet at the center.
（実施例）
以下に本発明を図示の実施例に基づいて説明す
る。本発明を示す第１図乃至第３図において、１
は缶体容器に用いられる蓋体の全体を示してお
り、この蓋体１は概して円形の鏡板２の外周縁に
クツシヨンビード（凹溝）３を介して立上がりフ
ランジ４を連接して構成される。さらに詳述する
と、円形鏡板２はクツシヨンビード３の内側に鏡
板の外周縁に沿つて延び略円環状をなすＶ字形断
面の主スコアー線２１を備えている。この主スコ
アー線２１は、鏡板の外周縁に沿つて平面略Ｃ字
形状に延びる円弧部２１ａと、該円弧部２１ａの
両端を連結するよう蓋体の中心軸線Ｍに平行に形
成された弦部２１ｂとからなり、該主スコアー線
２１は後記するタブ５を用いて蓋体１を全面開口
するためのものである。上記弦部２１ｂの中央
は、後記するリベツト２４の周囲を囲むよう曲成
された半円形状部２１b′となつている、なお、上
記円弧部２１ａと弦部２１ｂ、及び弦部２１ｂの
半円形状２１b′と他の部分とは、アール形状に連
結されている。(Example) The present invention will be explained below based on the illustrated example. In FIGS. 1 to 3 showing the present invention, 1
1 shows the entire lid body used for a can body container, and this lid body 1 is constructed by connecting a rising flange 4 to the outer peripheral edge of a generally circular end plate 2 via a cushion bead (concave groove) 3. More specifically, the circular end plate 2 is provided with a main score line 21 on the inside of the cushion bead 3, which extends along the outer periphery of the end plate and has a substantially annular V-shaped cross section. This main score line 21 includes a circular arc portion 21a extending in a substantially C-shape in plan along the outer periphery of the mirror plate, and a string portion formed parallel to the central axis M of the lid body to connect both ends of the circular arc portion 21a. 21b, and the main score line 21 is for opening the entire lid 1 using a tab 5, which will be described later. The center of the string part 21b is a semicircular part 21b' that is curved so as to surround a rivet 24, which will be described later. The shape 21b' and other parts are connected in a rounded shape.
２２は環状の主スコアー線２１によつて囲まれ
てその内側に形成される除去自在部分である。こ
の除去自在部分２２内には、主スコアー線２１に
沿つて延びる環状の補助スコアー線２３が設けら
れており、該主スコアー線２１の弦部２１ｂに沿
つた補助スコアー線２３ａは、その中央がリベツ
ト２４の近傍でカールした終端となつている、こ
の補助スコアー線２３は、該補助スコアー線２３
を設けることによつて生じるメタルフローによ
り、主スコアー線２１の深さを大きくとりつつそ
の亀裂を防止する作用をなすもので、この部分が
破断されるわけではない。上記補助スコアー線２
３を設けたことにより、主スコアー線２１のスコ
アー残厚を薄くすることができるので、主スコア
ー線２１を容易に破断できる利点がある。 22 is a removable portion surrounded by and formed inside the annular main score line 21. An annular auxiliary score line 23 extending along the main score line 21 is provided in the removable portion 22, and the auxiliary score line 23a along the chord part 21b of the main score line 21 has its center This auxiliary score line 23 has a curled end near the rivet 24.
The metal flow caused by providing the main score line 21 has the effect of increasing the depth of the main score line 21 and preventing its cracking, and this part does not break. Auxiliary score line 2 above
3, the remaining thickness of the main score line 21 can be made thinner, which has the advantage that the main score line 21 can be easily broken.
２４は除去自在部分２２内において中心軸線Ｍ
を横切る半径方向線Ｎ上であつて主スコアー線２
１の弦部２１ｂと交差する位置に配置されたリベ
ツトである。 24 is the central axis M within the removable portion 22.
on the radial line N that intersects the main score line 2
This is a rivet placed at a position intersecting with the chord part 21b of No. 1.
５は上記リベツト２４を介して蓋体１に起立自
在に連結されたタブで、指を入れて引起こすため
の環状の持上部５１を有しており、このタブ５の
先端には、円弧状のタブノーズ５２が形成されて
いる。このタブノーズ５２は、第３図に示すよう
に、タブ５を構成する板材を内側に複数回折り曲
げることにより補強されている。このタブノーズ
５２と主スコアー線２１の半円形状部２１b′と
は、リベツト２４を中心にして同心円状に形成さ
れている。このタブノーズ５２の曲率半径Ｒは６
〜12mmとするのが好ましい。これは、６mmより小
さいとタブの成形が困難であり、また12mmより大
きくなると初期開口スコアー線である半円形状部
２１b′に応力集中ができず、第１次開口力が大き
くなつてしまうためである。このタブ５は第３図
に示すように前記したリベツト２４にかしめ止め
されている。而して、上記タブ５のタブノーズ５
２は、主スコアー線２１の半径方向外方にあつて
該主スコアー線２１とクツシヨンビード３との間
に位置せしめられている。 Reference numeral 5 designates a tab that is connected to the lid body 1 via the rivet 24 so as to be able to stand up freely, and has an annular lifting part 51 for inserting a finger to pull it up. A tab nose 52 is formed. As shown in FIG. 3, this tab nose 52 is reinforced by bending the plate material constituting the tab 5 inward multiple times. The tab nose 52 and the semicircular portion 21b' of the main score line 21 are formed concentrically with the rivet 24 at the center. The radius of curvature R of this tab nose 52 is 6
It is preferable to set it to 12 mm. This is because if it is smaller than 6 mm, it is difficult to form the tab, and if it is larger than 12 mm, stress cannot be concentrated on the semicircular portion 21b' which is the initial opening score line, and the primary opening force increases. It is. This tab 5 is caulked to the aforementioned rivet 24 as shown in FIG. Therefore, the tab nose 5 of the tab 5 above
2 is located radially outward of the main score line 21 and between the main score line 21 and the cushion bead 3.
以上の構成において、本発明に係る蓋体１を用
いた缶体容器６を開口する場合は、第４図及び第
５図に示すように、タブ５の持上部５１を時計方
向へ引起こすと、てこの作用によつてタブ５のタ
ブノーズ５２を支点としてリベツト２４が主スコ
アー線２１の半円形状部２１b′の内部に位置する
除去自在部分２２を上方へ引つ張り、鏡板２を主
スコアー線２１の半円弧状部２１b′を含む弦部２
１ｂに沿つて破断するのと同時に除去自在部分２
２を上方へ湾曲させ、鏡板２の周縁に第１次開口
部Ｏが形成される。こうすることによつて、全面
開口の第１次開口が行なわれる。このようにして
鏡板２の一部を破断した後タブ５全体を上方へ引
上げると、鏡板２は主スコアー線２１の円弧部２
１ａ沿いに破断されて全面的に開口され（第２次
開口）、全面開口が完了する。 In the above configuration, when opening the can body container 6 using the lid 1 according to the present invention, as shown in FIGS. 4 and 5, the lifting part 51 of the tab 5 is pulled clockwise. By lever action, the rivet 24 pulls the removable portion 22 located inside the semicircular portion 21b' of the main score line 21 upward using the tab nose 52 of the tab 5 as a fulcrum, and the mirror plate 2 is pulled upwardly by the main score line 21. Chord part 2 including semicircular arc-shaped part 21b' of line 21
The removable portion 2 simultaneously breaks along 1b.
2 is curved upward, and a primary opening O is formed at the peripheral edge of the end plate 2. By doing this, the primary opening of the entire surface is performed. After breaking a part of the end plate 2 in this way, when the entire tab 5 is pulled upward, the end plate 2 is removed from the arc portion 2 of the main score line 21.
The entire surface is opened by breaking along 1a (secondary opening), and the entire surface is completely opened.
ここで、本発明のようにタブノーズを円弧状に
することにより、開口時の支点を１つにすること
ができると共に、スコアー線２１と該支点とを近
づけることができ、てこの原理による力の増幅度
が大きくて応力を集中でき、そのため第１次開口
力の低減も図れるのである。 Here, by making the tab nose into an arc shape as in the present invention, it is possible to use one fulcrum at the time of opening, and also to bring the score line 21 and the fulcrum closer together, thereby reducing the force due to the lever principle. The degree of amplification is large, so stress can be concentrated, and therefore the primary opening force can be reduced.
また、タブノーズ５２と主スコアー線２１の半
円弧状部２１b′とが同心円状に形成されているた
め、不本意な外力によつてタブ５がリベツト２４
を中心に回動してタブノーズ５２が半径方向線Ｎ
からずれた場合やタブ５の引き上げ時に斜め方向
から引つ張つたような場合でも、支点となるタブ
ノーズ５２は最初に開口される半円弧状部２１
b′の力の作用線上に常に位置し、しかも支点と半
円弧状部２１b′間の距離は変わらない。したがつ
て、タブ５が不本意に回動した場合でも、タブ５
を正規の位置に戻してから開口することなく、常
に小さな開口力で第１次開口を行なえる利点があ
る。さらにタブノーズ５２の曲率半径Ｒを６〜12
mmとすることにより、前記応力集中の効果が効率
的に発揮され、第１次開口力を小さくすることが
できる。 In addition, since the tab nose 52 and the semicircular arc portion 21b' of the main score line 21 are formed concentrically, the tab 5 may be pushed against the rivet 24 by an undesired external force.
The tab nose 52 rotates around the radial direction N.
Even if the tab 5 deviates from the position or is pulled from an oblique direction when pulling up the tab 5, the tab nose 52, which serves as a fulcrum, will move toward the semicircular arc-shaped portion 21 that is opened first.
It is always located on the line of action of force b', and the distance between the fulcrum and the semicircular arc portion 21b' does not change. Therefore, even if the tab 5 rotates involuntarily, the tab 5
There is an advantage that the primary opening can always be performed with a small opening force without having to open the opening after returning the opening to the normal position. Furthermore, the radius of curvature R of the tab nose 52 is set to 6 to 12.
By setting the diameter to mm, the effect of stress concentration can be efficiently exhibited, and the primary opening force can be reduced.
ところで、全面開口の第１次開口及び第２次開
口を行なう際の開口力を、第１１図及び第１２図
に示す従来の蓋体と本発明に係る蓋体について比
較実験したところ、次のような結果が得られた。
蓋体の条件としては、第１１図に示すように、
0.30tの肉厚を有する5052Al材に50度のスコア角
と0.050のスコア幅のスコアを備えた蓋体を例に
とつて比較した。図中、７は主スコアー線２１を
形成するスコアーダイを、Ｔはスコア残圧をそれ
ぞれ示している。第７図及び第８図は上記試験の
結果を示すもので、Ｃは本発明に係る蓋体におけ
る第１次開口力及び第２次開口力の最大値を示し
ており、Ａは従来の蓋体における第１次開口力及
び第２次開口力の最大値を示している。このグラ
フから明らかなように、本発明の蓋体は従来のも
のに比べて、第２次開口力が大幅に小さくなつて
いる。本発明の蓋体の全面開口力が従来のものに
比べて減少するのは、本発明の蓋体では、第１次
開口時に主スコアー線２１の内部を上方へ引張つ
て鏡板２を破断するため、開口端が大きく曲がら
ず、従来のように力が分散することを防止でき、
開口端の微小部分を徐々に開口して第２次開口が
行なえるためである。 By the way, when we compared the opening force when performing primary opening and secondary opening of the entire surface with the conventional lid body shown in FIGS. 11 and 12 and the lid body according to the present invention, we found the following results. The following results were obtained.
The conditions for the lid are as shown in Figure 11.
A comparison was made using an example of a lid made of 5052Al material with a wall thickness of 0.30t and a score angle of 50 degrees and a score width of 0.050. In the figure, 7 indicates the score die forming the main score line 21, and T indicates the score residual pressure. 7 and 8 show the results of the above test, where C indicates the maximum value of the primary opening force and secondary opening force of the lid according to the present invention, and A indicates the maximum value of the primary opening force and secondary opening force of the lid according to the present invention. It shows the maximum value of the primary opening force and the secondary opening force in the body. As is clear from this graph, the secondary opening force of the lid of the present invention is significantly smaller than that of the conventional lid. The reason why the overall opening force of the lid of the present invention is reduced compared to the conventional one is because the lid of the present invention pulls the inside of the main score line 21 upward to break the mirror plate 2 during the first opening. , the opening end does not bend too much and prevents the force from dispersing like in the past.
This is because the secondary opening can be performed by gradually opening a minute portion at the opening end.
また、第１次開口力も、第７図に示すように従
来例に比べて大幅に小さくなつている。これは、
上述した通り、タブノーズ５２が円弧状で支点が
１つとなり、主スコアー線２１に近づけることが
できるためである。 Furthermore, the primary opening force is also significantly smaller than that of the conventional example, as shown in FIG. this is,
This is because, as described above, the tab nose 52 is arcuate and has one fulcrum, which allows it to be brought closer to the main score line 21.
なお、第１次開口力は、第９図。に示すように
L3，L4を大きくすることによつても勿論低減が
はかれ、L4を一定とするとL3を大きくすればす
る程第１次開口力は小さくなる。しかし、この場
合には、タブ５が大型化するため、使用材料が増
大しコストアツプにつながる。 The primary opening force is shown in Figure 9. as shown in
Of course, the reduction can be achieved by increasing L 3 and L 4 , and assuming L 4 is constant, the larger L 3 becomes, the smaller the primary opening force becomes. However, in this case, the tab 5 becomes larger, which increases the amount of materials used, leading to an increase in cost.
また、第２次開口を行なう際多くの人は、第１
０図に示すように、親指Ｅを鏡板２に押しつけ、
ここを支点として開口しているのを考慮に入れる
と、図中の寸法ｈも重要な意味を持つ。成人女子
の指の寸法ｈは平均27.5mmであるので、ｈはこれ
より小さい値をとるのが望ましい。従つて、Ｈ＝
L1＋L2（L1とL2は第６図に図示）とすると、Ｈは
22〜23mm程度が開口しやすいという印象であつ
た。 Also, when performing the secondary opening, many people
As shown in Figure 0, press your thumb E against the mirror plate 2,
Considering that the opening is made with this point as the fulcrum, the dimension h in the figure also has an important meaning. Since the average size h of an adult female finger is 27.5 mm, it is desirable that h take a value smaller than this. Therefore, H=
If L 1 +L 2 (L 1 and L 2 are shown in Figure 6), then H is
My impression was that it was easy to open the hole at around 22 to 23 mm.
一方、この種の全面開口用の蓋体を高真空の缶
詰等に使用した場合、第１１図に示す従来のもの
は、タブノーズでスコアー線を破断した瞬間、大
気圧が鏡板全体にかかつていると共にタブで鏡板
を缶内に押し込むように開口するため、爆音とと
もにスコアー線全体が切断され、缶内に鏡板が落
ちるという、いわゆる爆音開口を生じる問題点が
あり、心臓マヒをも引起す一因となつていた。こ
れに対し、本発明の蓋体では、上方にタブを持ち
上げて開口するため、爆音開口を生じる危険もな
く、高真空の缶体容器にも十分使用できる。 On the other hand, when this type of full-opening lid is used for high-vacuum canned goods, etc., the conventional one shown in Figure 11 has atmospheric pressure applied to the entire top plate at the moment the tab nose breaks the score line. At the same time, since the end plate is opened by pushing the end plate into the can with a tab, there is a problem that the entire score line is cut off with an explosive sound and the end end plate falls into the can, which is a so-called explosive opening, which can also cause heart failure. I was getting used to it. On the other hand, the lid of the present invention is opened by lifting the tab upward, so there is no risk of an explosive opening, and the lid can be fully used for high-vacuum cans.
（発明の効果）
本発明は以上の構成及び作用よりなるもので、
タブをそのタブノーズを支点として引起すことに
より、リベツトを介して全面開口用スコアー線の
内部を上方に引張り上げ、スコアー線を引張り応
力によつて破断するので、第１次開口によつて除
去自在部分が上方に湾曲するため、従来のように
第１次開口によつて除去自在部分が下方に直角に
折曲り、該第１次開口部の剛性が高くなつて開口
力が広範囲に分散し、その後の第２次開口に非常
に大きな力を必要とするといつたことがなく、第
２次開口が小さな力で行なえる。(Effect of the invention) The present invention consists of the above configuration and operation,
By pulling up the tab using the tab nose as a fulcrum, the inside of the score line for full opening is pulled upward through the rivet, and the score line is broken by tensile stress, so it can be removed by the primary opening. Since the portion is curved upward, the removable portion is bent downward at right angles by the primary opening as in the conventional case, and the rigidity of the primary opening is increased and the opening force is dispersed over a wide range. It has never been said that a very large force is required for the subsequent secondary opening, and the secondary opening can be performed with a small force.
また、タブノーズが円弧状となつているため、
タブを引き起こす際の支点となるタブノーズが一
か所となり、該支点とスコアー線とを近づけるこ
とができ、第１次開口時に応力がスコアー線に集
中するので、第１次開口も小さな力で行なえ、指
を切つたり、内容物をこぼしたりすることを完全
に防止することができる。 In addition, because the tab nose is arc-shaped,
The tab nose, which is the fulcrum when pulling out the tab, is in one place, and the fulcrum and the score line can be brought close together, and the stress is concentrated on the score line during the first opening, so the first opening can be done with a small force. , it can completely prevent you from cutting your finger or spilling the contents.
さらに、タブノーズと全面開口用スコアー線の
各円弧状部をリベツトを中心とする同心円状に形
成したので、タブがリベツトを中心に回転して正
規の位置よりずれた場合やタブ引き上げ時に斜め
方向から引つ張つたような場合でも、支点となる
タブノーズの位置は第１次開口されるスコアー線
に作用する力の作用線上に常に位置し、しかもそ
の間隔は一定に保持されることになり、タブの引
き上げ力をスコアー線に効率的に集中させること
ができ、第１次開口をより一層容易に行なうこと
ができる。 Furthermore, the arcuate parts of the tab nose and the score line for full opening are formed concentrically around the rivet, so if the tab rotates around the rivet and deviates from its normal position, or if the tab is pulled up from an angle, Even in the case of tension, the position of the tab nose, which serves as the fulcrum, is always located on the line of action of the force acting on the score line that is first opened, and the distance between them is kept constant, so the tab The pulling force can be efficiently concentrated on the score line, and the primary opening can be performed even more easily.
第１図乃至３図は本発明に係る缶体容器の蓋体
を示すもので、第１図はその平面図、第２図はタ
ブを取除いた蓋体の平面図、第３図は第１図の要
部拡大断面図、第４図及び第５図は同蓋体の開口
過程を示す断面図、第６図は比較試験のため蓋体
に形成したスコア状態を示す部分拡大断面図、第
７図は本発明の蓋体と従来の蓋体の第１次開口力
を測定した結果を示ずグラフ、第８図は本発明に
係る蓋体と従来の蓋体の第２次開口力を測定した
結果を示すグラフ、第９図はタブ開口状態を示す
模式図、第１０図は本発明に係る蓋体を実際に開
口した状態を示す斜視図、第１１図及び第１２図
は従来の蓋体を示すもので、第１１図はその平面
図、第１２図は蓋体の開口過程を示す断面図であ
る。
符号の説明、１……蓋体、２……鏡板、５……
タブ、２１……全面開口用スコアー線、２２……
除去自在部分、２４……リベツト、５１……持上
部、５２……タブノーズ。
1 to 3 show the lid of the can body container according to the present invention, FIG. 1 is a plan view thereof, FIG. 2 is a plan view of the lid with the tab removed, and FIG. 3 is a top view of the lid with the tab removed. FIG. 1 is an enlarged sectional view of the main part of FIG. 1, FIGS. 4 and 5 are sectional views showing the opening process of the lid, and FIG. Figure 7 is a graph that does not show the results of measuring the primary opening force of the lid of the present invention and the conventional lid, and Figure 8 is the secondary opening force of the lid of the invention and the conventional lid. FIG. 9 is a schematic diagram showing the tab open state, FIG. 10 is a perspective view showing the lid according to the present invention actually opened, and FIGS. 11 and 12 are the conventional ones. 11 is a plan view thereof, and FIG. 12 is a sectional view showing the process of opening the lid. Explanation of symbols, 1... Lid body, 2... End plate, 5...
Tab, 21... Score line for full opening, 22...
Removable part, 24... Rivet, 51... Lifting part, 52... Tab nose.
Claims (1)
スコアー線を設けてその内側に除去自在部分を形
成すると共に、該除去自在部分内の開口端部にリ
ベツトを配置し、タブの開口操作部が除去自在部
分にあつて且つタブノーズが全面開口用スコアー
線の半径方向外方に位置するように、前記リベツ
トにタブを起立自在に連結すると共に、開口時に
前記タブノーズを全面開口用スコアー線の半径方
向外方に位置させたままで開口操作を行なうもの
で、前記タブノーズおよびリベツトの近傍におけ
る全面開口用スコアー線を円弧状に形成し、該全
面開口用スコアー線の円弧状部とタブノーズの円
弧状部とを、リベツトを中心とする同心円状に形
成したことを特徴とする缶体容器の蓋体。 ２ 上記タブノーズの円弧状部の曲率半径を６〜
12mmとしたことを特徴とする特許請求の範囲第１
項に記載の缶体容器の蓋体。[Scope of Claims] 1. An annular full-opening score line is provided along the periphery of the circular end plate, a removable portion is formed inside the score line, and a rivet is arranged at the opening end of the removable portion, The tab is erectably connected to the rivet so that the opening operation part of the tab is in the removable part and the tab nose is located radially outward of the score line for full opening, and the tab nose is fully opened when opening. The opening operation is performed while the opening score line is positioned radially outward of the opening score line, and the entire opening score line near the tab nose and rivet is formed in an arc shape, and the arc-shaped portion of the entire opening score line and the opening operation are performed. A lid for a can body, characterized in that the arcuate portion of the tab nose is formed concentrically with a rivet at the center. 2 Set the radius of curvature of the arc-shaped part of the above tab nose to 6~
Claim 1 characterized in that the diameter is 12 mm.
The lid of the can body container described in .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60093367A JPS61259952A (en) | 1985-04-30 | 1985-04-30 | Cover body of can body vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60093367A JPS61259952A (en) | 1985-04-30 | 1985-04-30 | Cover body of can body vessel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61259952A JPS61259952A (en) | 1986-11-18 |
| JPH0246463B2 true JPH0246463B2 (en) | 1990-10-16 |
Family
ID=14080320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60093367A Granted JPS61259952A (en) | 1985-04-30 | 1985-04-30 | Cover body of can body vessel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61259952A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020017311A1 (en) | 2018-07-20 | 2020-01-23 | 大和製罐株式会社 | Can lid |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021187470A (en) | 2020-05-28 | 2021-12-13 | 大和製罐株式会社 | Can lid tabs and can lids |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3259267A (en) * | 1962-10-01 | 1966-07-05 | Continental Can Co | Shock absorbing formation in scored can ends |
| JPS58109946U (en) * | 1977-06-21 | 1983-07-27 | フランツ・ポ−ル・メタル−・ウント・クンストシユトツフヴア−レンフアブリ−ク・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Pharmaceutical bottle seal cap |
| JPS5751412Y2 (en) * | 1978-07-28 | 1982-11-09 | ||
| JPS5864947A (en) * | 1981-11-24 | 1983-04-18 | 川崎 利明 | Unit can |
| JPS59172130U (en) * | 1983-05-04 | 1984-11-17 | 日本クラウンコルク株式会社 | Easy-to-open lid |
-
1985
- 1985-04-30 JP JP60093367A patent/JPS61259952A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020017311A1 (en) | 2018-07-20 | 2020-01-23 | 大和製罐株式会社 | Can lid |
| US12208939B2 (en) | 2018-07-20 | 2025-01-28 | Daiwa Can Company | Can lid |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61259952A (en) | 1986-11-18 |
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