JP4895573B2 - Easy-to-open can lid tab and method for forming tab - Google Patents

Easy-to-open can lid tab and method for forming tab Download PDF

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JP4895573B2
JP4895573B2 JP2005318008A JP2005318008A JP4895573B2 JP 4895573 B2 JP4895573 B2 JP 4895573B2 JP 2005318008 A JP2005318008 A JP 2005318008A JP 2005318008 A JP2005318008 A JP 2005318008A JP 4895573 B2 JP4895573 B2 JP 4895573B2
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tab
finger
score
lid
easy
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JP2007126157A (en
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陽 齋藤
恵 吉本
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Asahi Breweries Ltd
Toyo Seikan Kaisha Ltd
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Asahi Breweries Ltd
Toyo Seikan Kaisha Ltd
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Description

本発明は、ビール等の飲用缶の開口容易缶蓋に用いられるタブに関し、特にステイオンタイプのタブおよびその成形方法に関する。   The present invention relates to a tab used for an easy-to-open can lid of a drinking can such as beer, and more particularly to a steion-type tab and a molding method thereof.

従来のこの種のステイオンタイプのタブは、蓋体に刻設されたスコアによって縁取られた開口予定部外にリベット部によって固定される固定部と、固定部に対してスコアを越えて開口予定部内に延びるタブ先端部と、固定部に対して開口予定部と反対方向に延びる把持部とを備え、把持部の後端部が開口操作時の指掛かり部となっている。この指掛かり部に指を掛けて把持部を上方に持ち上げ、てこ作用によってタブ先端部によって開口予定部を押圧することにより、スコアを初期破断部から終端に向けて連続的に破断し、破断した開口片をヒンジ部にて屈曲させて缶内に折り込む構造となっていた。   This type of conventional steion-type tab has a fixed part fixed by a rivet part outside a planned opening part bordered by a score engraved on the lid, and is scheduled to open beyond the score with respect to the fixed part. A tab front end portion extending into the portion and a grip portion extending in a direction opposite to the planned opening portion with respect to the fixed portion are provided, and the rear end portion of the grip portion serves as a finger hook portion during opening operation. The score is continuously broken from the initial breakage part to the terminal end by breaking the finger by placing the finger on the finger hook part and lifting the gripping part upward and pressing the planned opening part by the tip of the tab. The opening piece is bent at the hinge and folded into the can.

しかし、タブは蓋体上面に沿って延びる平らな形状で、タブ後端の指掛かり部と蓋体上面の隙間も小さいために、持ち上げ初期には指が指掛かり部に僅かに引っ掛かる程度で、指が滑って持ち上げにくく、缶を開けづらい。特に、ビール等の冷えた飲料缶の場合、指掛かり部表面が結露して水滴が付着しているために、指が滑りやすく、指掛かり性が一層悪くなるという問題があった。   However, the tab has a flat shape extending along the top surface of the lid, and the gap between the finger hooking portion at the rear end of the tab and the top surface of the lid is small, so that the finger is slightly caught on the finger hooking portion at the initial stage of lifting, It is difficult to lift the can because it is difficult to lift your fingers. In particular, in the case of a cold beverage can such as beer, there is a problem that the finger catching portion surface is dewed and water droplets are attached, so that the finger is slippery and the finger catching property is further deteriorated.

このような指掛かり性を改善する方法としては、たとえば、特許文献１に記載のように、開口補助部材を取り付けたものが提案されている。
この開口補助部材は、タブの把持部である指掛けリング上面に係止部を介して板状部を固定し、板状部の後端をタブの後端より高い位置で後方に突出させ、この突出部に指を掛けるようにして、タブを持ち上げやすい構造としたものである。また、突出部の突出方向先端面には、滑り止めのための凹凸が設けられている。
しかしながら、特許文献１に記載の構成では、基本的に、開口補助部材の分だけ部品点数が増大すると共に、開口補助部材を取り付ける工程も増大し、生産性が悪いという問題がある。
また、滑り止めのための凹凸が設けられているといっても、この凹凸が滑り止めとして有効なのは、突出部の先端面に指を押し当てて指先を突出部裏面に引っ掛けるまでの段階と思量され、指先が突出部の裏面に引っ掛かって持ち上げ始めると、力は突出部裏面との接触部に集中し、指先突出部先端面側は浮き気味となって滑り止めとして機能しない。 As a method for improving such finger gripping, for example, as described in Patent Document 1, a method in which an opening auxiliary member is attached has been proposed.
The opening auxiliary member fixes the plate-like portion to the upper surface of the finger ring that is the grip portion of the tab via the locking portion, and causes the rear end of the plate-like portion to protrude rearward at a position higher than the rear end of the tab. The tab is easily lifted by placing a finger on the protruding portion. Moreover, the protrusion part protrusion front-end surface is provided with unevenness for preventing slipping.
However, the configuration described in Patent Document 1 basically has a problem that the number of parts increases by the amount of the opening assisting member and the process of attaching the opening assisting member increases, resulting in poor productivity.
In addition, even though unevenness for preventing slipping is provided, the reason why this unevenness is effective as anti-slip is the stage from when the finger is pressed against the tip of the protrusion and the fingertip is hooked on the back of the protrusion. When the fingertip is caught on the back surface of the projecting portion and begins to lift, the force concentrates on the contact portion with the back surface of the projecting portion, and the tip end surface side of the fingertip projecting portion tends to float and does not function as a slip stopper.

特開２００３−２７６７３３号公報JP 2003-276733 A

本発明は上記した従来技術の課題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、補助部材を用いることなく、指掛かり部の指滑りを効果的に防止し得る開口容易缶蓋のタブおよびその成形方法を提供することにある。   The present invention has been made to solve the above-described problems of the prior art, and an object of the present invention is to provide an easy-to-open can lid that can effectively prevent finger slipping of a finger hook portion without using an auxiliary member. And a method of forming the same.

上記目的を達成するために、請求項１に係る発明は、
蓋体に刻設されたスコアによって縁取られた開口予定部外にリベット部によって固定される固定部と、該固定部に対してスコアを越えて開口予定部内に延びるタブ先端部と、前記固定部に対して開口予定部と反対方向に延びる把持部とを備え、前記把持部には指掛け孔が設けられ、把持部の後端辺部と指掛け孔の後孔辺部との幅狭部分が開口操作時の指掛かり部となる構成の開口容易缶蓋のタブにおいて、
前記指掛かり部裏面に滑り止め用凹凸部が設けられ、該滑り止め凹凸部が、互いに交差するように刻設された複数本の第１スコアと第２スコアによって構成され、第１スコアと第２スコアの交差部がＶ字形状のスコアパターンとなっていることを特徴とする。
請求項２に係る発明は、把持部は指掛かり部を部分的に高くしたチップアップ構造となっていることを特徴とする。
請求項３に係る発明は、把持部の指掛かり部の裏面は平坦面となっていることを特徴とする。
In order to achieve the above object, the invention according to claim 1
A fixed portion fixed by a rivet portion outside a planned opening portion bordered by a score carved in the lid, a tab tip portion extending into the planned opening portion beyond the score with respect to the fixed portion, and the fixed portion A grip portion extending in the opposite direction to the planned opening portion , the grip portion is provided with a finger hook hole, and a narrow portion between the rear end side portion of the grip portion and the rear hole side portion of the finger hook hole is opened. In the tab of the easy-to-open can lid configured to be a finger hook during operation,
An anti-slip uneven portion is provided on the back surface of the finger hook portion, and the anti-slip uneven portion is composed of a plurality of first and second scores engraved so as to intersect each other, The intersection of two scores is a V-shaped score pattern .
The invention according to claim 2 is characterized in that the gripping part has a tip-up structure in which the finger hook part is partially raised.
The invention according to claim 3 is characterized in that the back surface of the finger hook portion of the grip portion is a flat surface .

請求項４に係る発明は、蓋体に刻設されたスコアによって縁取られた開口予定部外にリベット部によって固定される固定部と、固定部に対してスコアを越えて開口予定部内に延びるタブ先端部と、固定部に対して開口予定部と反対方向に延びる把持部とを備え、把持部の後端が開口操作時の指掛かり部となる構成で、指掛かり部裏面に滑り止め用スコアを設けた開口容易缶蓋のタブであって、
前記把持部は指掛かり部を部分的に高くしたチップアップ構造で、前記指掛かり部をチップアップ構造に成形する金型にスコア形成用の刃部を設け、指掛かり部の型成形と同時に指掛かり部裏面に滑り止め用スコアを刻設することを特徴とする。 According to a fourth aspect of the present invention, there is provided a fixed portion fixed by a rivet portion outside a planned opening portion bordered by a score engraved in the lid, and a tab extending into the planned opening portion beyond the score with respect to the fixed portion. An anti-slip score is provided on the back surface of the finger-holding portion with a front-end portion and a grip portion extending in the opposite direction to the planned opening portion with respect to the fixed portion, and the rear end of the grip portion is a finger-hold portion during opening operation. An easy-to-open can lid tab provided with
The gripping part has a tip-up structure in which the finger-holding part is partially raised, and a score forming blade part is provided on a mold for forming the finger-holding part into a chip-up structure, and the finger is simultaneously formed with the finger-holding part. An anti-slip score is engraved on the back of the hanging portion.

請求項１に係る発明によれば、指掛かり部裏面に滑り止め用凹凸を設けたので、開口時にタブを持ち上げる際に、結露によって水滴が付着しているような場合でも、指先が指掛かり部裏面の複数本の第１スコアと第２スコアがＶ字形状に交差するスコアパターンによって構成される凹凸部に引っ掛かり、指滑りを抑制することができ、容易に開口することができる。
特に、滑り止め用凹凸部を、複数本の第１スコアと第２スコアが交差するスコアパターンによって構成したので、凹凸の加工が容易となる。
請求項２に係る発明によれば、指掛かり部を部分的に高くしたチップアップ構造となっているので、滑り止め用凹凸部の構成と相俟って指掛かり性がより一層向上する。
According to the first aspect of the present invention, since the unevenness for preventing slipping is provided on the back surface of the finger hook portion, even when water droplets are attached due to condensation when the tab is lifted at the time of opening, the fingertip is not touched by the finger hook portion. A plurality of first and second scores on the back surface can be hooked on the concavo-convex portion constituted by a score pattern intersecting in a V shape, and finger slip can be suppressed and can be easily opened.
In particular, since the anti-slip uneven portion is constituted by a score pattern in which a plurality of first scores and second scores intersect , uneven processing is facilitated.
According to the second aspect of the present invention, since the tip-up structure has a partially raised finger hook portion, the finger holdability is further improved in combination with the configuration of the anti-slip uneven portion.

請求項４に係る発明の開口容易缶蓋のタブの成形方法によれば、指掛かり部をチップアップ構造に成形する金型にスコア形成用の刃部を設け、指掛かり部の型成形と同時に指掛かり部裏面に滑り止め用スコアを刻設するようにしたので、特別な滑り止めの用スコアを成形する工程が不要で、簡単に加工することができる。   According to the method of forming the tab of the easy-open can lid of the invention according to claim 4, a score forming blade portion is provided in the mold for forming the finger hook portion into a tip-up structure, and simultaneously with the mold formation of the finger hook portion. Since the anti-slip score is engraved on the back surface of the finger hook portion, a process for forming a special anti-slip score is not required and can be easily processed.

以下に本発明を図示の実施の形態に基づいて詳細に説明する。
図１（Ａ）は、本発明の実施の形態に掛かるタブを備えた開口容易缶蓋を示している。
すなわち、この開口容易缶蓋１００は、スコア１１によって縁取られた開口予定部１２を備えた蓋体１０と、この蓋体１０の上面にリベット部１３によって固定されたスコア破断用のステイオンタイプのタブ１とを備えている。
蓋体１０は、円板状のパネル部１４と、このパネル部１４の周縁に環状溝１５を介して上方に立ち上がるチャックウォール部１６と、このチャックウォール部１６から外側に向かって延びて缶本体の巻締めフランジ（不図示）と共に巻き締められる巻締めカール部１７と、を備えている。開口予定部１２はパネル部１４の中央に突設されたリベット部１３付近から周縁に向けて舌状に延びる形状で、その周縁を縁取るスコア１１によって構成されている。パネル部１４には、スコア１１とタブ１を取り囲むように段差１８が設けられている。 The present invention will be described in detail below based on the embodiments shown in the drawings.
FIG. 1A shows an easy-to-open can lid provided with a tab according to an embodiment of the present invention.
That is, the easy opening can lid 100 includes a lid body 10 having a planned opening portion 12 bordered by a score 11, and a score-breaking steion type fixed to the upper surface of the lid body 10 by a rivet portion 13. Tab 1 is provided.
The lid 10 includes a disk-shaped panel portion 14, a chuck wall portion 16 that rises upward at the periphery of the panel portion 14 via an annular groove 15, and extends outward from the chuck wall portion 16 to the can body. And a winding curl portion 17 that is wound together with a winding flange (not shown). The planned opening portion 12 has a shape extending in a tongue shape from the vicinity of the rivet portion 13 projecting at the center of the panel portion 14 toward the periphery, and is configured by a score 11 that borders the periphery. The panel portion 14 is provided with a step 18 so as to surround the score 11 and the tab 1.

タブ１は、蓋体１０の開口予定部１２外にリベット部１３によって固定される固定部２と、この固定部２に対してスコア１１を越えて開口予定部１２内に延びるタブ先端部３と、固定部２に対して開口予定部１２と反対方向に延びる把持部４とを備え、把持部４の後端部が開口操作時の指掛かり部５となっている。
タブ１は略小判形状で、平板状のタブ板部１０１の外周縁に、図１（Ｂ）に部分的に示すように、裏面側に折り返されたカール部１０２を全周的に設けて高剛性化が図られている。タブ１の外周は、互いにほぼ平行に直線的に延びる左右側辺部１ａ，１ｂと、左右側辺部１ａ，１ｂの前端部を連結する円弧状の前端辺部１ｃと、左右側辺部１ａ，１ｂの後端部を円弧状部１ｅ，１ｅを介して連結する直線状の後端辺部１ｄとを有している。タブ１の形状は小判形状に限定されるものではなく、たとえば左右側辺部が曲線状となる楕円形状等、他の形状でもよい。
固定部２はリベット部１３よって蓋体１０に固着される部分で、タブ１の前端辺部１ｃと後端辺部１ｄを二等分する中心線Ｎ上で前端辺部１ｃ側に片寄った部分に設けられる。固定部２には不図示のリベット孔が設けられ、蓋体１０から突設されるリベット部１３が差し込まれてリベット結合される。固定部２は蓋体１０上面に固着される部分がタブ板部１０１上面から一段くぼんだくぼみ面２１となっている。また、リベット部１３に対して後端辺部１ｄ側にはリベット部１３の後方と左右側方を囲むようにＵ字状あるいは円弧状に湾曲する形状の透孔２２が設けられている。 The tab 1 includes a fixed portion 2 fixed by a rivet portion 13 outside the planned opening portion 12 of the lid 10, and a tab tip portion 3 extending into the planned opening portion 12 beyond the score 11 with respect to the fixed portion 2. The holding portion 4 extending in the opposite direction to the planned opening portion 12 with respect to the fixed portion 2 is provided, and the rear end portion of the holding portion 4 is a finger hook portion 5 at the time of opening operation.
The tab 1 has a substantially oval shape, and a curled portion 102 which is folded back on the back surface side is provided on the outer peripheral edge of the tab-like tab plate portion 101 as shown in FIG. Stiffening is achieved. The outer periphery of the tab 1 has left and right side portions 1a and 1b that extend linearly substantially parallel to each other, an arcuate front end portion 1c that connects the front ends of the left and right side portions 1a and 1b, and a left and right side portion 1a. , 1b and a linear rear end side portion 1d for connecting the rear end portions via arcuate portions 1e, 1e. The shape of the tab 1 is not limited to the oval shape, and may be another shape such as an elliptical shape in which the left and right side portions are curved.
The fixing portion 2 is a portion that is fixed to the lid 10 by the rivet portion 13, and is a portion that is offset toward the front end side 1c side on the center line N that bisects the front end side 1c and the rear end side 1d of the tab 1 Is provided. The fixing portion 2 is provided with a rivet hole (not shown), and a rivet portion 13 protruding from the lid body 10 is inserted and rivet coupled. The fixed portion 2 has a recessed surface 21 in which a portion fixed to the upper surface of the lid 10 is recessed from the upper surface of the tab plate portion 101. Further, a through-hole 22 that is curved in a U shape or an arc shape is provided on the rear end side 1 d side with respect to the rivet portion 13 so as to surround the rear side and the left and right sides of the rivet portion 13.

タブ先端部３は、固定部２より前方に位置する円弧状の前端辺部１ｃに沿った部分であり、カール部１０２によって高剛性化が図られ、スコア破断時に蓋体１０の開口予定部１２を下方に押圧する。
把持部４は、タブ板部１０１の透孔２２よりも後方に延びる部分であり、指掛け孔４１が設けられている。この指掛け孔４１は、タブ中心線Ｎに対して直交する前孔辺部４１ｃと後孔辺部４１ｄが直線状で、タブ１の後端辺部１ｄと平行に延び、この前後孔辺部４１ｃ，４１ｄの左右両端部を連結する左右孔辺部４１ａ，４１ｂが円弧状に成形され、把持部４全体として指掛け孔４１を取り囲むリング状を呈してる。この指掛け孔４１の周縁にも、裏面側に折り返されたカール部４２が全周的に設けられ、高剛性化が図られている。 The tab front end portion 3 is a portion along the arc-shaped front end side portion 1c positioned in front of the fixing portion 2, and the curled portion 102 increases the rigidity, and the opening expected portion 12 of the lid body 10 when the score breaks. Is pressed downward.
The grip portion 4 is a portion extending rearward from the through hole 22 of the tab plate portion 101, and a finger hooking hole 41 is provided. The finger hole 41 has a front hole side portion 41c and a rear hole side portion 41d orthogonal to the tab center line N, and extends in parallel with the rear end side portion 1d of the tab 1, and the front and rear hole side portions 41c. The left and right hole sides 41a and 41b that connect the left and right ends of 41d are formed in an arc shape, and the grip part 4 as a whole has a ring shape surrounding the finger hook hole 41. A curled portion 42 that is folded back on the back surface side is also provided around the periphery of the finger hooking hole 41 so as to achieve high rigidity.

把持部４の後端部は後端辺部１ｄから左右の円弧状部１ｅ，１ｅも含まれるが、この実施の形態では、直線状の後端辺部１ｄと指掛け孔４１の後孔辺部１ｄの間の幅狭部分が指掛かり部５となっている。この指掛かり部５の裏面側には、タブ１の後端辺部１ｄに沿って設けられたカール部１０２と、指掛け孔４１の後孔辺部４１ｄに沿って設けられたカール部４２が存在し、これらカール部１０２，４２の下面が指掛かり部裏面５Ａを構成する。カール部１０２とカール部４２の間は隙間５１があってもよいし、密接していてもよい。   The rear end portion of the grip portion 4 also includes left and right arc-shaped portions 1e, 1e from the rear end side portion 1d. In this embodiment, the rear end side portion 1d of the straight line and the rear hole side portion of the finger hooking hole 41 are included. A narrow portion between 1d is a finger hook portion 5. On the back side of the finger hook portion 5, there are a curled portion 102 provided along the rear end side portion 1 d of the tab 1 and a curled portion 42 provided along the rear hole side portion 41 d of the finger hooking hole 41. The lower surfaces of these curled portions 102 and 42 constitute the finger hook rear surface 5A. There may be a gap 51 between the curled portion 102 and the curled portion 42 or may be in close contact.

指掛かり部５については、タブ板部１０１上面に対して平行に所定寸法だけ高くなったチップアップ構造となっている。図示例では、指掛かり部５の左右両端の屈曲部５２，５２を介して指掛かり部５が上方に突出する構成となっている。チップアップ加工の際に、指掛かり部裏面５Ａのカール部１０２およびカール部４２下面は圧縮されて平坦面となっている。チップアップ構造は、タブ板部１０１上面に対して、前端より後端を高くした前後方向に傾斜する構造としてもよい。
一方、蓋体１０のパネル部１４側には、指掛かり部５の後端直下から周縁の環状溝１５の間に所定深さのくぼみ部１９が設けられ、指掛かり部５を高くした構成と相まってより指が掛かりやすい構造となっている。 The finger hook portion 5 has a tip-up structure in which the height is increased by a predetermined dimension parallel to the upper surface of the tab plate portion 101. In the illustrated example, the finger hook portion 5 protrudes upward via bent portions 52 and 52 at both left and right ends of the finger hook portion 5. At the time of chip-up processing, the lower surface of the curled portion 102 and the curled portion 42 of the finger hook portion back surface 5A is compressed into a flat surface. The tip-up structure may be a structure that is inclined in the front-rear direction with the rear end higher than the front end with respect to the upper surface of the tab plate portion 101.
On the other hand, on the panel part 14 side of the lid 10, a recessed part 19 having a predetermined depth is provided between the annular groove 15 at the peripheral edge from directly below the rear end of the finger holder part 5, and the finger holder part 5 is raised. Combined with this, it has a structure that makes it easier to put your fingers on it.

指掛かり部裏面５Ａを構成するカール部１０２，４２の下面には、滑り止め用凹凸部としての滑り止め用スコア６が形成されている。
滑り止め用スコア６のパターンは、カール部１０２およびカール部４２に跨ってタブ中心線Ｎに対して互いに反対側に傾斜する直線状の第１スコア６１、第２スコア６２を複数本刻設した構成で、図示例ではカール部１０２，４２の隙間５１位置にて第１スコア６１と第２スコア６２が交差し、カール部１０２とカール部４２裏面にＶ字形状のスコアパターンが構成されている。スコアの深さはタブに用いられる板材の厚みに依存し、例えば板材としてアルミニウム板を用いた場合、板厚に対し１０〜７０％程度、好適には２０〜５０％程度、より好適には２５〜３５％程度の深さで刻設される。 On the lower surface of the curl portions 102 and 42 constituting the finger hook back surface 5A, a slip prevention score 6 is formed as a slip prevention uneven portion.
The pattern of the non-slip score 6 is provided with a plurality of linear first score 61 and second score 62 which are inclined to opposite sides with respect to the tab center line N across the curled portion 102 and the curled portion 42. In the configuration, in the illustrated example, the first score 61 and the second score 62 intersect at the position of the gap 51 between the curled portions 102 and 42, and a V-shaped score pattern is formed on the back surface of the curled portion 102 and the curled portion 42. . The depth of the score depends on the thickness of the plate used for the tab. For example, when an aluminum plate is used as the plate, the depth is about 10 to 70%, preferably about 20 to 50%, more preferably 25. It is engraved at a depth of ~ 35%.

図２には、このスコア加工する金型構造を模式的に示している。
すなわち、指掛かり部５をチップアップ構造に成形する金型として、スコア形成用の刃部２１１が形成されたダイ２１０と、ダイ２１０上のタブの指掛かり部５を圧縮するパンチ２２０とを有し、指掛かり部５をチップアップ成形すると同時に、ダイ２１０に設けられた刃部２１１によって指掛かり部５の裏面５Ａに滑り止め用スコア６を刻設するようになっている。
滑り止め用スコア６の加工は、チップアップ成形後に加工してもよいし、チップアップ成形前に加工してもよい。また、タブ１のカール部成形前の素材の段階で加工しておいてもよい。 FIG. 2 schematically shows a mold structure for score processing.
That is, as a mold for forming the finger hook portion 5 into a tip-up structure, a die 210 having a score forming blade portion 211 and a punch 220 for compressing the finger hook portion 5 of the tab on the die 210 are provided. At the same time as the finger hook portion 5 is chip-up molded, the anti-slip score 6 is engraved on the back surface 5 A of the finger hook portion 5 by the blade portion 211 provided on the die 210.
The anti-slip score 6 may be processed after chip-up molding or before chip-up molding. Moreover, you may process in the step of the raw material before the curl part shaping | molding of the tab 1. FIG.

上記構成の開口容易缶蓋のタブにあっては、指掛かり部裏面５Ａに滑り止め用スコア６を設けたので、開口時にタブ１を持ち上げる際に、結露によって水滴が付着しているような場合でも、指が指掛かり部裏面５Ａの滑り止め用スコア６に引っ掛かり、指滑りを抑制することができ、容易にタブ１を持ち上げて開口することができる。
特に、指掛かり部５は部分的に高くしたチップアップ構造となっているので、滑り止め用スコア６の構成と相俟って指掛かり性がより一層向上する。
なお、この実施例では指掛かり部を部分的に高くしたチップアップ構造のタブを例にとって説明したが、指掛かり部を高くしていないタイプのタブについても同様に適用可能である。 In the tab of the easy-to-open can lid having the above-described configuration, since the anti-slip score 6 is provided on the back surface 5A of the finger hook portion, when the tab 1 is lifted at the time of opening, water drops are attached due to condensation. However, the finger is caught on the anti-slip score 6 on the back surface 5A of the finger hook portion, and finger slip can be suppressed, and the tab 1 can be easily lifted and opened.
In particular, since the finger hook part 5 has a partially raised tip-up structure, the finger holdability is further improved in combination with the structure of the anti-slip score 6.
In this embodiment, a tab with a tip-up structure with a partially raised finger hook has been described as an example. However, the present invention can be similarly applied to a tab of a type without a raised finger hook.

図１は本発明の実施の形態に係るタブが固定された開口容易缶蓋を示すもので、同図（Ａ）は開口前の状態の平面図、同図（Ｂ）は同図（Ａ）のタブの部分拡大裏面図、同図（Ｃ）は指掛かり部の概略拡大断面図である。FIG. 1 shows an easy-to-open can lid to which a tab according to an embodiment of the present invention is fixed. FIG. 1 (A) is a plan view of the state before opening, and FIG. 1 (B) is the same drawing (A). FIG. 9C is a partially enlarged back view of the tab of FIG. 図２は図１のタブの指掛かり部に滑り止め用スコアを加工する金型構造例を示す概略断面図である。FIG. 2 is a schematic cross-sectional view showing an example of a mold structure for processing a non-slip score on the finger hook portion of the tab of FIG.

符号の説明Explanation of symbols

１ タブ
１０１ タブ板部
１０２ カール部
１ａ，１ｂ 左右側辺部
１ｃ 前端辺部
１ｄ 後端辺部
２ 固定部
２１ くぼみ面
２２ 透孔
３ タブ先端部
４ 把持部
４１ 指掛け孔
４１ａ，４１ｂ 左右孔辺部
４１ｃ 前孔辺部
４１ｄ 後孔辺部
４２ カール部
５ 指掛かり部
５Ａ 指掛かり部裏面
５１ 隙間
５２ 屈曲部
６ 滑り止め用スコア （滑り止め用凹凸部）
６１ 第１スコア、６２ 第２スコア
１０ 蓋体
１１ スコア
１２ 開口予定部
１３ リベット部
１４ パネル部
１５ 環状溝
１６ チャックウォール部
１７ 巻締めカール部
１８ 段差
１９ くぼみ部
１００ 開口容易缶蓋
２１０ ダイ
２１１ 刃部
２２０ パンチ

DESCRIPTION OF SYMBOLS 1 Tab 101 Tab board part 102 Curl part 1a, 1b Left right side part 1c Front end side part 1d Rear end side part 2 Fixing part 21 Recessed face 22 Through-hole 3 Tab front-end | tip part 4 Holding part 41 Finger hook hole 41a, 41b Left and right hole side Part 41c front hole side part 41d rear hole side part 42 curl part 5 finger hook part 5A finger hook part back surface 51 gap 52 bent part 6 non-slip score (uneven part for anti-slip)
61 1st score, 62 2nd score 10 Lid 11 Score 12 Planned opening part 13 Riveting part 14 Panel part 15 Annular groove 16 Chuck wall part 17 Winding curl part 18 Step 19 Recessed part 100 Easy opening can lid 210 Die 211 Blade Part 220 punch

Claims (4)

蓋体に刻設されたスコアによって縁取られた開口予定部外にリベット部によって固定される固定部と、該固定部に対してスコアを越えて開口予定部内に延びるタブ先端部と、前記固定部に対して開口予定部と反対方向に延びる把持部とを備え、前記把持部には指掛け孔が設けられ、把持部の後端辺部と指掛け孔の後孔辺部との幅狭部分が開口操作時の指掛かり部となる構成の開口容易缶蓋のタブにおいて、
前記指掛かり部裏面に滑り止め用凹凸部が設けられ、該滑り止め凹凸部が、互いに交差するように刻設された複数本の第１スコアと第２スコアによって構成され、第１スコアと第２スコアの交差部がＶ字形状のスコアパターンとなっていることを特徴とする開口容易缶蓋のタブ。 A fixed portion fixed by a rivet portion outside a planned opening portion bordered by a score carved in the lid, a tab tip portion extending into the planned opening portion beyond the score with respect to the fixed portion, and the fixed portion A grip portion extending in the opposite direction to the planned opening portion , the grip portion is provided with a finger hook hole, and a narrow portion between the rear end side portion of the grip portion and the rear hole side portion of the finger hook hole is opened. In the tab of the easy-to-open can lid configured to be a finger hook during operation,
An anti-slip uneven portion is provided on the back surface of the finger hook portion, and the anti-slip uneven portion is composed of a plurality of first and second scores engraved so as to intersect each other, A tab for an easy-to-open can lid, characterized in that the intersection of two scores is a V-shaped score pattern . 把持部は指掛かり部を部分的に高くしたチップアップ構造となっていることを特徴とする請求項１に記載の開口容易缶蓋のタブ。 The tab of the easy-to-open can lid according to claim 1, wherein the gripping part has a tip-up structure in which a finger hook part is partially raised. 把持部の指掛かり部の裏面は平坦面となっている請求項１又は２に記載の開口容易缶蓋のタブ。 The tab of the easy-to-open can lid according to claim 1 or 2, wherein the back surface of the finger hook portion of the grip portion is a flat surface . 蓋体に刻設されたスコアによって縁取られた開口予定部外にリベット部によって固定される固定部と、該固定部に対してスコアを越えて開口予定部内に延びるタブ先端部と、前記固定部に対して開口予定部と反対方向に延びる把持部とを備え、該把持部の後端が開口操作時の指掛かり部となる構成で、該指掛かり部裏面に滑り止め用スコアを設けた開口容易缶蓋のタブであって、
前記把持部は指掛かり部を部分的に高くしたチップアップ構造で、前記指掛かり部をチップアップ構造に成形する金型にスコア形成用の刃部を設け、指掛かり部の型成形と同時に指掛かり部裏面に滑り止め用スコアを刻設することを特徴とする開口容易缶蓋のタブの成形方法。
A fixed portion fixed by a rivet portion outside a planned opening portion bordered by a score carved in the lid, a tab tip portion extending into the planned opening portion beyond the score with respect to the fixed portion, and the fixed portion An opening provided with a non-slip score on the back surface of the finger-holding portion, wherein the gripping portion extends in the opposite direction to the planned opening portion, and the rear end of the gripping portion serves as a finger-holding portion during opening operation. Easy can lid tab,
The gripping part has a tip-up structure in which the finger-holding part is partially raised, and a score forming blade part is provided on a mold for forming the finger-holding part into a chip-up structure, and the finger is simultaneously formed with the finger-holding part. A method for forming a tab of an easy-to-open can lid, wherein an anti-slip score is engraved on the back surface of the hanging portion.
JP2005318008A 2005-11-01 2005-11-01 Easy-to-open can lid tab and method for forming tab Active JP4895573B2 (en)

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JP5514665B2 (en) * 2010-08-05 2014-06-04 ユニバーサル製缶株式会社 Can lid and tab for can lid
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JPH08282788A (en) * 1995-04-14 1996-10-29 Toshio Kawahara Auxiliary device for opening drink poptop can
JPH11321862A (en) * 1998-05-18 1999-11-24 Kyo Meifu Stay-on-tab easy lid opening structure
JP2001106228A (en) * 1999-10-05 2001-04-17 Nobuhiro Morita Easily openable can lid
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