JP3141079U

JP3141079U - Steion tab type can lid

Info

Publication number: JP3141079U
Application number: JP2007010157U
Authority: JP
Inventors: 明夫姜
Original assignee: 明夫姜
Priority date: 2007-12-12
Filing date: 2007-12-12
Publication date: 2008-04-24
Anticipated expiration: 2017-12-12

Abstract

【課題】開口用タブに折曲部を設けて、タブの指起こしを容易にする。
【解決手段】缶蓋パネル１１にはスコア１２が形成され、開口用タブ２０を開缶操作することによりスコアが破断されて飲み口となる。開口用タブ２０は、先端側の押下部２２と後端側の引上部２４との中間位置に固着部２３があり、缶蓋パネル１１のほぼ中央位置で固着する。開口用タブ２０の引上部２４は、押下部２２から後端側へかけて延びたＶ字状の直線辺に囲まれて形成され、押下部２２と固着部２３と引上部２４とからなるタブ本体部２１の周縁には環状の補強リブ２５を形成する。引上部２４のＶ字状の直線辺の一辺に接して狭巾の直線帯状の折曲部２６（図中、点線で示す）を設け、その折曲部２６を介して起こし部２７を設ける。起こし部２７の外縁には、曲線状の補強リブ２８を形成する。起こし部２７に指穴２９を穿設する。
【選択図】図１An opening tab is provided with a bent portion to facilitate raising the tab.
A can lid panel 11 is formed with a score 12, and when the opening tab 20 is opened, the score is broken to form a drinking mouth. The opening tab 20 has a fixing portion 23 at an intermediate position between the pressing portion 22 on the front end side and the pulling portion 24 on the rear end side, and is fixed at a substantially central position of the can lid panel 11. The pulling portion 24 of the opening tab 20 is formed by being surrounded by a V-shaped straight side extending from the pressing portion 22 to the rear end side, and is a tab composed of the pressing portion 22, the fixing portion 23, and the pulling portion 24. An annular reinforcing rib 25 is formed on the periphery of the main body 21. A narrow strip-shaped bent portion 26 (indicated by a dotted line in the figure) is provided in contact with one side of the V-shaped straight side of the pulling portion 24, and a raised portion 27 is provided through the bent portion 26. A curved reinforcing rib 28 is formed on the outer edge of the raised portion 27. A finger hole 29 is formed in the raising portion 27.
[Selection] Figure 1

Description

本考案は、ドリンク缶のステイオンタブ方式の缶蓋の改良に関するものである。 The present invention relates to an improvement in a can lid of a canister of a drink can.

ステイオンタブ式缶蓋は、主にドリンク缶の缶蓋に用いられており、缶の上蓋パネル上にリベットにより固着されたタブ後端の引上部を持ち上げることによって、タブのリベット固着部が支点となり、テコの原理により、タブ先端の押下部が作用点となって押し下げられ、パネル上面に予め設けられた飲口部のスコアが破断され、破断された飲口部が缶の内側に折り込まれた状態で開口するようになっている。
このような、従来のステイオンタブ式のドリンク缶の飲口を開ける場合、タブの後端の引上部を持ち上げるためには、指先をタブ後端の引上部と上蓋パネルの間に差し入れなければならず、指の太い人や爪が長い人にとって、この作業に困難を伴うことがあった。また、指が差し入れられても、タブの後端の引上部を起こすために、指が痛くなったり、力の弱い子供や女性の場合、開け難いという問題も発生している。
そこで、この種の缶蓋のステイオンタブの構造について、種々の改良が試みられ提案されている。Steion tab type can lids are mainly used for drink can can lids, and the rivet fixing part of the tab is a fulcrum by lifting the pulling part at the rear end of the tab fixed by rivets on the upper cover panel of the can. According to the principle of lever, the pressing part at the tip of the tab is pushed down as an action point, the score of the mouthpiece provided in advance on the upper surface of the panel is broken, and the broken mouthpiece is folded inside the can. It is designed to open in a state where
When opening the mouth of such a conventional steion tab type drink can, in order to lift the pulling part at the rear end of the tab, the fingertip must be inserted between the pulling part at the rear end of the tab and the upper lid panel. In other words, this work may be difficult for people with thick fingers or long nails. In addition, even when a finger is inserted, the pulling up of the rear end of the tab is raised, so that the finger becomes painful and it is difficult for a child or a woman with weak power to open it.
Accordingly, various improvements have been tried and proposed for the structure of the steion tab of this type of can lid.

例えば、出願人は、ドリンク缶のステイオンタブと上蓋パネルの間に三角型の薄いフィルムシートを挟み込み、ステイオンタブを起こすときには、まず、三角型の薄いフイルムシートを指先で摘んで持ち上げ、タブの後端の引上部を持ち上げ、そのまま缶の開口部が開くまでタブを起こすか、もしくは、タブの後端の引上部の指穴に指が掛かる程度にタブが持ち上がったら、その指穴に指をかけてタブをさらに起こして開口部を開けるようにした「ドリンク缶らくらく蓋開けの構造」（特開平１１−１０５８６９号）や、これと同じ目的でフィルムシートを使用して缶蓋の開口部を開けるようにした「ドリンク缶らくらく蓋開け構造」（特開平１１−２７８４８４号）を開示している。
上記のような、フィルムシートをタブ起こしの補助部材として用いる方法は、タブを容易に起こし易くするという目的には適するが、従来のステイオンタブの他に、フィルムシートを別途用意しなければならず、これをタブと上蓋パネルとの間に挿入するための製造工程も増えることになり、材料コスト、製造コストが上昇するという問題があった。For example, the applicant puts a triangular thin film sheet between the drink canister's steion tab and the top cover panel, and when raising the steion tab, first pick and lift the triangular thin film sheet with the fingertip, Lift up the pulling part at the rear end of the tab and raise the tab until the opening of the can opens, or when the tab is lifted to the extent that the finger hole is at the pulling hole at the rear end of the tab, The structure of the lid can be opened easily by raising the tab to open the opening (Japanese Patent Application Laid-Open No. 11-105869), and using the film sheet for the same purpose, the opening of the can lid A “drink can easily open lid structure” (Japanese Patent Laid-Open No. 11-278484) is disclosed.
The method of using the film sheet as an auxiliary member for raising the tab as described above is suitable for the purpose of easily raising the tab, but in addition to the conventional steon tab, a film sheet must be prepared separately. However, the manufacturing process for inserting this between a tab and an upper cover panel also increased, and there was a problem that the material cost and the manufacturing cost increased.

また、出願人は、指で引上部を起こしやすくするための指挿入部をタブの後端の引上部から延設し、タブの押下部の前方側に位置するように配設した「ステイオンタブらくらく蓋開けの構造」（特開２０００−１２８１６７号）を提案している。
このタブ構造では、タブ自体が大きくなり、ドリンク缶の缶蓋が小さい場合には適さないという問題があった。In addition, the applicant has extended a finger insertion portion for facilitating raising of the pull-up portion with a finger from the pull-up portion at the rear end of the tab, and arranged so as to be positioned in front of the pressing portion of the tab. “Structure of easy opening of tab” (Japanese Patent Laid-Open No. 2000-128167).
This tab structure has a problem that the tab itself is large and is not suitable when the can lid of the drink can is small.

Technical Literature 1

特開平１１−１０５８６９号公報Japanese Patent Laid-Open No. 11-105869

Technical Literature 2

特開平１１−２７８４８４号公報JP 11-278484 A

Technical Literature 2

特開平２０００−１２８１６７号公報JP 2000-128167 A

本考案は、上述のような問題に鑑みてなされたもので、フィルムシートなどの他のパーツを使用することなく、タブ自体の構造を改良することにより、タブの指起こしを容易にしたステイオンタブ方式のドリンク缶の缶蓋を提供することを目的とする。 The present invention has been made in view of the above-described problems. By using the structure of the tab itself without using other parts such as a film sheet, the stion that makes it easy to raise the tab is provided. An object is to provide a can lid of a tab type drink can.

上記の課題を解決するの、本考案の請求項１に記載のステイオンタブ方式の缶蓋は、缶蓋パネルに開缶操作によって開口される開口部が設けられるとともに、該開口部を開口するための開口用タブが取り付けられ、前記開口部に輪郭の一部が開口時に破断されるスコアが形成され、前記開口用タブは、その先端側に前記開口部を押し下げて開口させる押下部と、同後端側に前記缶蓋パネルから引き上げられる引上部と、押下部と引上部の中間位置に缶蓋パネルに固着される固着部とを備えてなり、引上部を指で缶蓋パネルから起こす開缶操作によって、梃の原理により固着点が支点となり、かつ押下部が作用点となって缶蓋パネルの開口部を押下げてスコアを破断して開口するように形成されたステイオンタブ式の缶蓋において、前記開口用タブは、引上部が押下部から後端側へ形成された左右の直線辺でＶ字状に囲まれてなり、押下部と固着部と引上部とからなるタブ本体部の周縁に環状に補強リブを形成するとともに、前記タブ本体部のＶ字状の直線辺の一辺に接して狭巾の直線帯状の折曲部を延設し、さらにその折曲部を介して起こし部を延設し、かつ、その起こし部に指穴を設けるとともに起こし部の周縁に補強リブを形成し、前記タブ本体部の周縁の補強リブと前記起こし部の周縁の補強リブとが前記折曲部において不連続となるように形成したことを特徴とする。
本考案のステイオンタブ式缶蓋は上記のように構成したことにより、起こし部を指で起こすと、起こし部とタブ本体の周縁の補強リブとの境界にある折曲部は容易に折り曲がって起こし部が起立し、起立した起こし部の指穴に指を掛けて上方に引っ張ることにより、容易に引上部が引上げられて缶蓋パネルの開口部が開口するという作用効果を奏する。In order to solve the above-mentioned problem, the steion tab type can lid according to claim 1 of the present invention is provided with an opening that is opened by a can opening operation on the can lid panel, and the opening is opened. An opening tab for attaching, a score is formed in which a part of the outline is broken when the opening is opened, and the opening tab has a pressing portion that pushes down the opening to open the tip, The rear end is provided with a pull-up portion that is pulled up from the can-lid panel, and a fixing portion that is fixed to the can-lid panel at an intermediate position between the pressing portion and the pull-up portion. Steion tab type formed so that the sticking point becomes a fulcrum by the principle of scissors, and the pressing part acts as an action point to push down the opening part of the can lid panel and break the score by opening the can. In the can lid, for the opening The upper part of the tab is surrounded by a V shape with left and right straight sides formed from the pressing part to the rear end side, and is reinforced annularly around the periphery of the tab main body part consisting of the pressing part, the fixing part and the pulling part. A rib is formed, and a narrow strip-like bent portion is extended in contact with one side of the V-shaped straight side of the tab main body, and a raised portion is extended through the bent portion. In addition, a finger hole is provided in the raised portion and a reinforcing rib is formed on the peripheral edge of the raised portion, and the reinforcing rib on the peripheral edge of the tab body portion and the reinforcing rib on the peripheral edge of the raised portion are discontinuous in the bent portion. It was formed so that it might become.
Since the steion tab type can lid of the present invention is configured as described above, when the raised portion is raised with a finger, the bent portion at the boundary between the raised portion and the reinforcing rib on the periphery of the tab body is easily bent. Thus, the raising portion rises, and the pulling portion is easily pulled up and the opening of the can lid panel is opened by putting the finger in the finger hole of the raising portion and pulling it upward.

また、請求項２に記載のステイオンタブ方式の缶蓋は、缶蓋パネルに開缶操作によって開口される開口部が設けられるとともに、該開口部を開口するための開口用タブが取り付けられ、前記開口部に輪郭の一部が開口時に破断されるスコアが形成され、前記開口用タブは、その先端側に前記開口部を押し下げて開口させる押下部と、同後端側に前記缶蓋パネルから引き上げられる引上部と、押下部と引上部の中間位置に缶蓋パネルに固着される固着部とを備えてなり、引上部を指で缶蓋パネルから起こす開缶操作によって、梃の原理により固着点が支点となり、かつ押下部が作用点となって缶蓋パネルの開口部を押下げてスコアを破断して開口するように形成されたステイオンタブ式の缶蓋において、前記開口用タブは、引上部が押下部から後端へ延びた左右直線辺でＶ字状に囲まれてなり、押下部と固着部と引上部とからなるタブ本体部の周縁に環状に補強リブを形成するとともに、前記タブ本体部のＶ字状の直線辺の一辺に接して狭巾の直線帯状の第１折曲部を延設し、さらにその第１折曲部を介して第１起こし部を延設し、かつ、その第１起こし部に指穴を設けるとともに第１起こし部の周縁に補強リブを形成し、前記タブ本体部の周縁の補強リブと前記第１起こし部の周縁の補強リブとが前記第１折曲部において連続しないように形成し、かつ、前記タブ本体部の略Ｖ字状の直線辺の他辺に接して狭巾の直線帯状の第２折曲部を延設し、さらにその第２折曲部を介して第２起こし部を延設し、かつ、その第２起こし部に指穴を設けるとともに第２起こし部の周縁に補強リブを形成し、前記タブ本体部の周縁の補強リブと前記第２起こし部の周縁の補強リブとが前記第２折曲部において連続しないように形成したことを特徴とする。
本考案のステイオンタブ式缶蓋は上記のように構成したことにより、第１起こし部（又は第２起こし部）を指で起こすと、第１起こし部（又は第２起こし部）とタブ本体の周縁の補強リブとの境界にある第１折曲部（又は第２折曲げ部）は容易に折り曲がって第１起こし部及び第２起こし部が起立し、起立した第１起こし部及び第２起こし部の指穴に指を掛けて上方に引っ張ることにより、容易に引上部が引上げられて缶蓋パネルの開口部が開口するという作用効果を奏する。Further, the steion tab type can lid according to claim 2 is provided with an opening to be opened by a can opening operation on the can lid panel, and an opening tab for opening the opening is attached, The opening is formed with a score in which a part of the outline is broken when the opening is opened, and the opening tab has a push-down portion that pushes down the opening to open and a can lid panel on the rear-end side. It is equipped with a pulling part that is pulled up from and a fixing part that is fixed to the can lid panel at an intermediate position between the pressing part and the pulling part. In the steion tab type can lid formed so that the fixing point serves as a fulcrum and the pressing portion serves as an action point to push down the opening of the can lid panel to break the score and open, the opening tab The pull-up part is from the pressing part The left and right straight sides extending to the end are surrounded by a V-shape, and a reinforcing rib is formed in the periphery of the tab main body portion composed of the pressing portion, the fixing portion, and the pulling portion, and the V-shape of the tab main body portion. A first straight bent portion having a narrow linear width extending in contact with one side of the straight line, and a first raised portion extending through the first bent portion, and the first raised portion A finger hole is provided in the portion and a reinforcing rib is formed on the periphery of the first raising portion, and the reinforcing rib on the periphery of the tab body portion and the reinforcing rib on the periphery of the first raising portion are continuous in the first bent portion. And a narrow straight strip-shaped second bent portion is extended in contact with the other side of the substantially V-shaped straight side of the tab main body, and the second bent portion is The second raising part is extended, and a finger hole is provided in the second raising part, and a reinforcing rib is provided on the periphery of the second raising part. Formed, characterized in that the reinforcing ribs of the periphery of the reinforcing ribs and the second raised portion of the peripheral edge of the tub body portion is formed so as not continuous at the second bent portion.
Since the steion tab type can lid of the present invention is configured as described above, when the first raising part (or the second raising part) is raised with a finger, the first raising part (or the second raising part) and the tab body The first bent portion (or the second bent portion) at the boundary with the reinforcing rib on the peripheral edge of the first bent portion is easily bent, and the first raised portion and the second raised portion are raised, and the first raised portion and the second raised portion are raised. 2 By putting a finger on the finger hole of the raising part and pulling it upward, the pulling upper part can be easily pulled up and the opening part of the can lid panel is opened.

また、請求項３に記載のステイオンタブ方式の缶蓋は、缶蓋パネルに開缶操作によって開口される開口部が設けられるとともに、該開口部を開口するための開口用タブが取り付けられ、前記開口部に輪郭の一部が開口時に破断されるスコアが形成され、前記開口用タブは、その先端側に前記開口部を押し下げて開口させる押下部と、同後端側に前記缶蓋パネルから引き上げられる引上部と、押下部と引上部の中間位置に缶蓋パネルに固着される固着部とを備えてなり、引上部を指で缶蓋パネルから起こす開缶操作によって、梃の原理により固着点が支点となり、かつ押下部が作用点となって缶蓋パネルの開口部を押下げてスコアを破断して開口するように形成されたステイオンタブ式の缶蓋において、前記開口用タブは、押下部と固着部と引上部とからなるタブ本体部の周縁を逆Ｕ字状に形成し、このタブ本体部の逆Ｕ字状の周縁に沿ってその外側に逆Ｕ字状の空隙部を設け、この空隙部を隔ててタブ本体部の逆Ｕ字状の周縁を囲むようにこれよりやや大きい逆Ｕ字状の起こし部を設け、かつ、前記タブ本体部の引上部の後端側に、タブ本体部の横幅よりやや幅広く左右に張り出すように折返し部を設け、この折返し部から前記逆Ｕ字状の起こし部が延設されるように形成するとともに、前記タブ本体部の逆Ｕ字状の周縁に補強リブを設け、
前記逆Ｕ字状の起こし部の外周縁に補強リブを設け、折返し部と起こし部の両端との境界部には補強リブを設けないようにしたことを特徴とする。
本考案のステイオンタブ式缶蓋は上記のように構成したことにより、起こし部を指で起こすと、起こし部と折返し部との境界にある折曲部は容易に折り曲がって起こし部が起立し、起立した起こし部に指を掛けて上方に引っ張ることにより、容易に引上部が引上げられて缶蓋パネルの開口部が開口するという作用効果を奏する。Further, the can lid of the steion tab method according to claim 3 is provided with an opening to be opened by a can opening operation on the can lid panel, and an opening tab for opening the opening is attached, The opening is formed with a score in which a part of the outline is broken when the opening is opened, and the opening tab has a push-down portion that pushes down the opening to open and a can lid panel on the rear-end side. It is equipped with a pulling part that is pulled up from and a fixing part that is fixed to the can lid panel at an intermediate position between the pressing part and the pulling part. In the steion tab type can lid formed so that the fixing point serves as a fulcrum and the pressing portion serves as an action point to push down the opening of the can lid panel to break the score and open, the opening tab The pressing part, the fixing part and the pulling part The periphery of the tab main body portion is formed in an inverted U shape, and an inverted U-shaped gap is provided on the outer side along the inverted U-shaped periphery of the tab main body, and the gap is separated. A reverse U-shaped raised portion that is slightly larger than this is provided so as to surround the inverted U-shaped peripheral edge of the tab main body portion, and on the rear end side of the upper portion of the tab main body portion, the lateral width of the tab main body portion A folded portion is provided so as to protrude slightly broadly to the left and right, and the inverted U-shaped raised portion is formed to extend from the folded portion, and a reinforcing rib is formed on the inverted U-shaped peripheral edge of the tab body portion. Provided,
A reinforcing rib is provided on the outer peripheral edge of the inverted U-shaped raising portion, and no reinforcing rib is provided at a boundary portion between the folded portion and both ends of the raising portion.
Since the steion tab type can lid of the present invention is configured as described above, when the raised portion is raised with a finger, the bent portion at the boundary between the raised portion and the folded portion is easily bent and the raised portion stands upright. Then, by placing a finger on the raised part and pulling it upward, the pulling part can be easily pulled up and the opening part of the can lid panel is opened.

本考案のステイオンタブ方式の缶蓋の開口用タブは、起こし部を指で起こすと、補強リブを設けてない折曲部が容易に折り曲がって、起こし部が起立し、起立した起こし部の指穴に指を掛けて上方に引っ張ることにより、引上部が引上げられ、極めて容易に缶蓋パネルの開口部を開口することができる。
また、起こし部を指で起こすと、補強リブを設けてない折曲部が容易に折り曲がって、起こし部が起立し、起立した起こし部に指を掛けて上方に引っ張ることにより、引上部が引上げられ、極めて容易に缶蓋パネルの開口部を開口することができる。The opening tab of the can lid of the present invention can open the raised part by raising the raised part with a finger and the bent part without the reinforcing rib is easily bent. By pulling the finger hole in the finger hole and pulling it upward, the pulling part is pulled up, and the opening of the can lid panel can be opened very easily.
In addition, when the raised part is raised with a finger, the bent part without the reinforcing rib is easily bent, the raised part is raised, the finger is placed on the raised part, and the upper part is pulled upward. The opening of the can lid panel can be opened very easily.

本考案の実施の形態を、図を用いて説明する。図１は、本考案の請求項１記載のステイオンタブ方式の缶蓋を上方から見た平面図である。図１に示すように、ドリンク缶１０の上面の缶蓋パネル１１に開口用タブ２０が取り付けられている。缶蓋パネル１１にはスコア１２が形成され、開口用タブ２０を開缶操作することによりスコアが破断されて飲み口となる開口部１３が設けられている。開口用タブ２０は、先端側の押下部２２と後端側の引上部２４との中間位置に固着部２３があり、その固着部２３が缶蓋パネル１１のほぼ中央位置で固着されている。開口用タブ２０の引上部２４は、押下部２２から後端側へかけて延びたＶ字状の直線辺に囲まれて形成され、押下部２２と固着部２３と引上部２４とからなるタブ本体部２１の周縁には環状のリブ２５が形成されている。引上部２４のＶ字状の直線辺の一辺に接して狭巾の直線帯状の折曲部２６（図中、点線で示す）が設けられ、さらにその折曲部２６を介して起こし部２７が設けられている。起こし部２７の外縁には、連続線状のリブ２８が形成されている。また、起こし部２７には指穴２９が穿設されている。 Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a plan view of a steion tab type can lid according to claim 1 of the present invention as viewed from above. As shown in FIG. 1, an opening tab 20 is attached to the can lid panel 11 on the upper surface of the drink can 10. A score 12 is formed on the can lid panel 11, and an opening 13 is provided which becomes a drinking mouth by breaking the score by opening the opening tab 20. The opening tab 20 has a fixing portion 23 at an intermediate position between the pressing portion 22 on the front end side and the pulling portion 24 on the rear end side, and the fixing portion 23 is fixed substantially at the center position of the can lid panel 11. The pulling portion 24 of the opening tab 20 is formed by being surrounded by a V-shaped straight side extending from the pressing portion 22 to the rear end side, and is a tab composed of the pressing portion 22, the fixing portion 23, and the pulling portion 24. An annular rib 25 is formed on the periphery of the main body 21. A narrow strip-shaped bent portion 26 (shown by a dotted line in the figure) is provided in contact with one side of the V-shaped straight side of the pulling portion 24, and a raised portion 27 is further provided through the bent portion 26. Is provided. A continuous linear rib 28 is formed on the outer edge of the raised portion 27. A finger hole 29 is formed in the raising portion 27.

開口用タブ２０は、スチール又はアルミニウム等の金属の薄い一枚板をプレス加工により成型したものである。タブ本体部２１の周縁のリブ２５と、起こし部２７の外縁のリブ２８は、上面側に凸状に突出した補強リブであるが、タブの外縁端部に形成されるリブは、外縁端部を上面側又は下面側に折曲げて二重にした形態の補強リブを形成してもよい。タブ本体部２１の周縁のリブ２５は、タブ本体の外周を囲む環状に形成され、起こし部２７の外縁のリブ２８は、起こし部２７の外周を囲む曲線状に形成され、このリブ２８はタブ本体部と２１と起こし部２７との境界にある狭巾の折曲部２６において途切れるように形成されている。 The opening tab 20 is formed by pressing a thin single plate of a metal such as steel or aluminum. The rib 25 on the peripheral edge of the tab main body 21 and the rib 28 on the outer edge of the raised portion 27 are reinforcing ribs protruding in a convex shape on the upper surface side, but the rib formed on the outer edge end of the tab is the outer edge end. You may form the reinforcement rib of the form which bent the 2nd to the upper surface side or the lower surface side, and was made double. The rib 25 on the peripheral edge of the tab main body portion 21 is formed in an annular shape surrounding the outer periphery of the tab main body 21, and the rib 28 on the outer edge of the raising portion 27 is formed in a curved shape surrounding the outer periphery of the raising portion 27. It is formed so as to be interrupted at the narrow bent portion 26 at the boundary between the main body portion 21 and the raising portion 27.

上記のように構成されたドリンク缶の缶蓋の飲み口を開口するときは、起こし部２７と缶蓋パネルとの隙間に指を差し入れ、起こし部２７を上方に起こすと、開口用タブ２０は折曲部２６で折り曲がって、指先の軽い力で起こし部２７が容易に起き上がる。そこで、起こし部の指穴２９に指を差し入れ又は２本の指で指穴２９を摘んで上方に引上げると、引上部２４が上方に引上げられ、固着部２３が支点となって、梃の原理により、押下部２２が開口部１３を押下げ、スコア１２が破断されて開口部１３が缶内部に押し込まれ、飲み口が開口する。本考案の特徴は、開口用タブ２０のタブ本体部２１の周縁と起こし部２７の外周にそれぞれ補強用のタブを形成したことにより、タブを形成した部分の強度が補強され、タブを設けていない折曲部２６が容易に折り曲がることにより、指で起こし部２７を僅かな力で極めて容易に起こすことができる点にある。
なお、図１における本実施例では、起こし部２７はタブ本体部２１の右側に位置しているが、開口用タブ２０の形状を図１に示したものと左右対称の形状として、起こし部２７をタブ本体部２１の左側に位置させるように形成してもよい。また、指穴２９の形状は略三角形であるが、この形状に限定されるものではない。タブ本体部２１に対する起こし部２７の位置や指穴２９の形状によって、左利き用又は右利き用に特化した開口用タブ２０を製造することも可能となる。また、本考案の缶蓋の構造によれば、僅かな力で簡単に開口することができるので、片手で開缶操作することも可能となる。When opening the mouth of the can lid of the drink can configured as described above, when the finger is inserted into the gap between the raising portion 27 and the can lid panel and the raising portion 27 is raised upward, the opening tab 20 is The bent portion 26 is bent and the raised portion 27 is easily raised by a light fingertip force. Therefore, when a finger is inserted into the finger hole 29 of the raising part or the finger hole 29 is picked up by two fingers and pulled upward, the pulling part 24 is pulled upward, and the fixing part 23 serves as a fulcrum. According to the principle, the pressing part 22 pushes down the opening part 13, the score 12 is broken, the opening part 13 is pushed into the inside of the can, and the drinking mouth opens. The feature of the present invention is that the reinforcing tabs are formed on the periphery of the tab main body portion 21 of the opening tab 20 and the outer periphery of the raised portion 27, respectively, so that the strength of the portion where the tab is formed is reinforced. Since the unfolded portion 26 is easily bent, the raised portion 27 can be raised very easily with a slight force.
In the present embodiment in FIG. 1, the raising portion 27 is located on the right side of the tab main body portion 21, but the shape of the opening tab 20 is symmetrical to that shown in FIG. May be positioned on the left side of the tab body 21. Moreover, although the shape of the finger hole 29 is substantially triangular, it is not limited to this shape. Depending on the position of the raised portion 27 with respect to the tab main body portion 21 and the shape of the finger holes 29, it is possible to manufacture the opening tab 20 specialized for left-handed or right-handed use. Further, according to the structure of the can lid of the present invention, since the opening can be easily performed with a slight force, the can opening operation can be performed with one hand.

図２（Ａ）は本発明の請求項２記載のステイオンタブ方式の缶蓋を上方から見た平面図であり、図２（Ｂ）はドリンク缶全体を斜め上方から見た斜視図である。図２（Ａ）及び（Ｂ）に示すように、ドリンク缶１０の上面の缶蓋パネル１１に開口用タブ２０が取り付けられている。缶蓋パネル１１にはスコア１２が形成され、開口用タブ２０を開缶操作することによりスコアが破断されて飲み口となる開口部１３が設けられている。開口用タブ２０は、先端側の押下部２２と後端側の引上部２４との中間位置に固着部２３があり、その固着部２３が缶蓋パネル１１のほぼ中央位置で固着されている。開口用タブ２０の引上部２４は、押下部２２から後端側へかけて延びたＶ字状の直線辺に囲まれて形成され、押下部２２と固着部２３と引上部２４とからなるタブ本体部２１の周縁には環状のリブ２５が形成されている。
引上部２４のＶ字状の直線辺の一辺に接して狭巾の直線帯状の第１折曲部２６ａ（図中に点線で示す）が設けられ、この第１折曲部２６ａを介して第１起こし部２７ａが設けられている。第１起こし部２７ａの外縁には、連続曲線状のリブ２８ａが形成されている。また、第１起こし部２７ａには指穴２９ａが穿設されている。
また、引上部２４のＶ字状の直線辺の他辺に接して狭巾の直線帯状の第２折曲部２６ｂ（図中に点線で示す）が設けられ、この第２折曲部２６ｂを介して第２起こし部２７ｂが設けられている。第２起こし部２７ｂの外縁には、連続曲線状のリブ２８ｂが形成されている。また、第２起こし部２７ｂには指穴２９ｂが穿設されている。FIG. 2 (A) is a plan view of a steion tab type can lid according to claim 2 of the present invention as viewed from above, and FIG. 2 (B) is a perspective view of the entire drink can as viewed from obliquely above. . As shown in FIGS. 2A and 2B, an opening tab 20 is attached to the can lid panel 11 on the upper surface of the drink can 10. A score 12 is formed on the can lid panel 11, and an opening 13 is provided which becomes a drinking mouth by breaking the score by opening the opening tab 20. The opening tab 20 has a fixing portion 23 at an intermediate position between the pressing portion 22 on the front end side and the pulling portion 24 on the rear end side, and the fixing portion 23 is fixed substantially at the center position of the can lid panel 11. The pulling portion 24 of the opening tab 20 is formed by being surrounded by a V-shaped straight side extending from the pressing portion 22 to the rear end side, and is a tab composed of the pressing portion 22, the fixing portion 23, and the pulling portion 24. An annular rib 25 is formed on the periphery of the main body 21.
A narrow straight strip-shaped first bent portion 26a (shown by a dotted line in the drawing) is provided in contact with one side of the V-shaped straight side of the pulling portion 24, and the first bent portion 26a is used to connect the first bent portion 26a. One raising portion 27a is provided. A continuous curved rib 28a is formed on the outer edge of the first raising portion 27a. Further, a finger hole 29a is formed in the first raising portion 27a.
In addition, a narrow second belt-shaped bent portion 26b (shown by a dotted line in the drawing) is provided in contact with the other side of the V-shaped straight side of the pulling portion 24, and the second bent portion 26b is provided. A second raising portion 27b is provided. On the outer edge of the second raising portion 27b, a continuous curved rib 28b is formed. Further, a finger hole 29b is formed in the second raising portion 27b.

開口用タブ２０は、スチール又はアルミニウム等の金属の薄い一枚板をプレス加工により成型したものである。タブ本体部２１の周縁のリブ２５と、第１起こし部２７ａの外縁のリブ２８ａと、第２起こし部２７ｂの外縁のリブ２８ｂとは、上面側に凸状に突出した補強リブであるが、タブの外縁端部に形成されるリブは、外縁端部を上面側又は下面側に折曲げて二重にした形態の補強リブを形成してもよい。タブ本体部２１の周縁のリブ２５は、タブ本体の外周を囲む環状に形成され、第１起こし部２７ａの外縁のリブ２８ａは、第１起こし部２７ａの外周を囲む曲線状に形成され、このリブ２８ａはタブ本体部２１と第１起こし部２７ａとの境界にある狭巾の折曲部２６ａにおいて途切れるように形成されている。また、第２起こし部２７ｂの外縁のリブ２８ｂは、第２起こし部２７ｂの外周を囲む曲線状に形成され、このリブ２８ａはタブ本体部２１と第１起こし部２７ａとの境界にある狭巾の折曲部２６ｂにおいて途切れるように形成されている。 The opening tab 20 is formed by pressing a thin single plate of a metal such as steel or aluminum. The rib 25 on the peripheral edge of the tab main body 21, the rib 28 a on the outer edge of the first raising part 27 a, and the rib 28 b on the outer edge of the second raising part 27 b are reinforcing ribs protruding in a convex shape on the upper surface side, The rib formed at the outer edge end portion of the tab may form a reinforcing rib in a form in which the outer edge end portion is bent to the upper surface side or the lower surface side to be doubled. The rib 25 on the periphery of the tab main body 21 is formed in an annular shape surrounding the outer periphery of the tab main body, and the rib 28a on the outer edge of the first raising portion 27a is formed in a curved shape surrounding the outer periphery of the first raising portion 27a. The rib 28a is formed so as to be interrupted at a narrow bent portion 26a at the boundary between the tab main body portion 21 and the first raising portion 27a. The rib 28b at the outer edge of the second raising portion 27b is formed in a curved shape surrounding the outer periphery of the second raising portion 27b, and the rib 28a is a narrow width at the boundary between the tab main body portion 21 and the first raising portion 27a. The bent portion 26b is formed so as to be interrupted.

上記のように構成されたドリンク缶の缶蓋の飲み口を開口するときは、第１起こし部２７ａと缶蓋パネルとの隙間に指を差し入れ、第１起こし部２７ａを上方に起こすと、開口用タブ２０は折曲部２６ａで折り曲がって、指先の軽い力で第１起こし部２７ａが容易に起き上がる。また、第２起こし部２７ｂと缶蓋パネルとの隙間に指を差し入れ、第２起こし部２７ｂを上方に起こすと、開口用タブ２０は折曲部２６ｂで折り曲がって、指先の軽い力で第２起こし部２７ｂが容易に起き上がる。こうして起き上がった第１起こし部２７ａと第２起こし部２７ｂとを２本の指で指穴２９ａ，２９ｂを摘んで上方に引上げると、引上部２４が上方に引上げられ、固着部２３が支点となって、梃の原理により、押下部２２が開口部１３を押下げ、スコア１２が破断されて開口部１３が缶内部に押し込まれ、飲み口が開口する。
本考案の特徴は、開口用タブ２０のタブ本体部２１の周縁と第１起こし部２７ａと第２起こし部２７ｂの外周にそれぞれ補強用のタブを形成したことにより、タブを形成した部分の強度が補強され、タブを設けていない第１折曲部２６ａ及び第２折曲部２６ｂが容易に折り曲がることにより、指で第１起こし部２７ａと第２起こし部２７ｂを僅かな力で極めて容易に起こすことができる点にある。When opening the mouth of the can lid of the drink can configured as described above, when a finger is inserted into the gap between the first raising portion 27a and the can lid panel and the first raising portion 27a is raised upward, the opening The tab 20 is bent at the bent portion 26a, and the first raised portion 27a is easily raised by the light force of the fingertip. Moreover, when a finger is inserted into the gap between the second raising portion 27b and the can lid panel and the second raising portion 27b is raised upward, the opening tab 20 is bent at the bent portion 26b, and the first fingertip is lightly applied. 2 Raising part 27b rises easily. When the first raised portion 27a and the second raised portion 27b thus raised are picked up by pulling the finger holes 29a and 29b with two fingers and pulled upward, the pulling portion 24 is lifted upward, and the fixing portion 23 is used as a fulcrum. Thus, according to the principle of wrinkles, the pressing part 22 pushes down the opening part 13, the score 12 is broken, the opening part 13 is pushed into the can, and the drinking mouth opens.
The feature of the present invention is that the reinforcing tabs are formed on the periphery of the tab main body portion 21 of the opening tab 20 and the outer periphery of the first raising portion 27a and the second raising portion 27b. The first bent portion 26a and the second bent portion 26b, which are reinforced and are not provided with tabs, are easily bent, so that the first raised portion 27a and the second raised portion 27b are very easily made with a slight force. The point is that you can wake up.

図３は、本考案の請求項３記載のステイオンタブ方式の缶蓋を上方から見た平面図である。図３に示すように、ドリンク缶１０の上面の缶蓋パネル１１に開口用タブ２０が取り付けられている。缶蓋パネル１１にはスコア１２が形成され、開口用タブ２０を開缶操作することによりスコアが破断されて飲み口となる開口部１３が設けられている。
開口用タブ２０は、押下部２２と固着部２３と引上部２４とからなるタブ本体部２１の周縁が逆Ｕ字状に形成され、押下部２２と引上部２４との中間位置に固着部２３があり、この固着部２３が缶蓋パネル１１のほぼ中央位置で固着されている。タブ本体部２１の逆Ｕ字状の周縁には曲線状の補強リブ２５が設けられている。
タブ本体部２１の逆Ｕ字状の周縁に沿ってその外側に逆Ｕ字状の空隙部３１が形成され、この空隙部３１を隔てて前記タブ本体部２１の周縁を囲むようにこれよりやや大きい逆Ｕ字状の起こし部２７が形成され、この逆Ｕ字状の起こし部２７の外周縁に逆Ｕ字状の補強リブ３８が設けられている。
引上部２４の後端側に、引上部２４の横幅よりやや幅広く左右に張り出して折返し部３２が延設され、逆Ｕ字状の起こし部２７の両端がこの折返し部３２から延設され、空隙部３１を隔ててタブ本体部２１の周縁を囲むように起こし部３７が設けられている。
折返し部３２の外縁には補強リブ３９が設けられている。また、折返し部３２と起こし部３７の両端部との境界部にはそれぞれ狭巾の折曲部３６ａ，３６ｂ（図中に点線で示す）が設けられている。FIG. 3 is a plan view of a steion tab type can lid according to claim 3 of the present invention as viewed from above. As shown in FIG. 3, an opening tab 20 is attached to the can lid panel 11 on the upper surface of the drink can 10. A score 12 is formed on the can lid panel 11, and an opening 13 is provided which becomes a drinking mouth by breaking the score by opening the opening tab 20.
The opening tab 20 has an inverted U-shaped peripheral edge of the tab main body 21 including the pressing portion 22, the fixing portion 23, and the pulling portion 24, and the fixing portion 23 is located at an intermediate position between the pressing portion 22 and the pulling portion 24. The fixing portion 23 is fixed at substantially the center position of the can lid panel 11. A curved reinforcing rib 25 is provided on the inverted U-shaped periphery of the tab body 21.
An inverted U-shaped gap 31 is formed on the outer side of the tab body 21 along the inverted U-shaped periphery, and the tab 31 is surrounded by the gap 31 so as to surround the periphery of the tab body 21 slightly. A large inverted U-shaped raised portion 27 is formed, and an inverted U-shaped reinforcing rib 38 is provided on the outer peripheral edge of the inverted U-shaped raised portion 27.
On the rear end side of the pull-up portion 24, a folded portion 32 is extended so as to extend slightly wider to the left and right than the width of the pull-up portion 24, and both ends of the inverted U-shaped raised portion 27 are extended from the folded portion 32, so A raised portion 37 is provided so as to surround the periphery of the tab main body portion 21 with the portion 31 therebetween.
A reinforcing rib 39 is provided on the outer edge of the folded portion 32. Further, narrow bent portions 36a and 36b (shown by dotted lines in the figure) are provided at the boundary portions between the folded portion 32 and the both ends of the raised portion 37, respectively.

開口用タブ２０は、スチール又はアルミニウム等の金属の薄い一枚板をプレス加工により成型したものである。タブ本体部２１の周縁のリブ２５と、起こし部３７の外縁のリブ３８と、折返し部３２の外縁のリブ３９は、上面側に凸状に突出した補強リブであるが、タブの外縁端部に形成されるリブは、外縁端部を上面側又は下面側に折曲げて二重にした形態の補強リブを形成してもよい。
タブ本体部２１の周縁のリブ２５は、タブ本体の外周を囲むが逆Ｕ字状に形成され、起こし部３７の外縁のリブ３８は、起こし部３７の外周を囲む逆Ｕ字状に形成され、折返し部３２の外縁のリブ３９は開口用タブの後端側に直線状に形成され、リブ３８とリブ３９は折返し部３２と起こし部３７との境界部にある狭巾の折曲部３６ａ，３６ｂにおいて途切れるように形成されている。The opening tab 20 is formed by pressing a thin single plate of a metal such as steel or aluminum. The rib 25 on the peripheral edge of the tab main body 21, the rib 38 on the outer edge of the raised portion 37, and the rib 39 on the outer edge of the folded portion 32 are reinforcing ribs protruding in a convex shape on the upper surface side. The ribs formed in (2) may form a reinforcing rib in a form in which the outer edge end portion is bent to the upper surface side or the lower surface side to be doubled.
The rib 25 on the peripheral edge of the tab main body 21 is formed in an inverted U shape surrounding the outer periphery of the tab main body 21, and the rib 38 on the outer edge of the raising portion 37 is formed in an inverted U shape surrounding the outer periphery of the raising portion 37. The rib 39 on the outer edge of the folded portion 32 is formed linearly on the rear end side of the opening tab, and the rib 38 and the rib 39 are narrow folded portions 36a at the boundary between the folded portion 32 and the raised portion 37. , 36b is formed so as to be interrupted.

上記のように構成されたドリンク缶の缶蓋の飲み口を開口するときは、起こし部３７と缶蓋パネルとの隙間に指を差し入れ、起こし部３７を上方に起こすと、折曲部３６ａ，３６ｂで折り曲がって、指先の軽い力で起こし部３７が容易に起き上がる。そこで、起こし部３７の内縁側に指を差し入れ又は２本の指で起こし部３７を摘んで上方に引上げると、引上部２４が上方に引上げられ、固着部２３が支点となって、梃の原理により、押下部２２が開口部１３を押下げ、スコア１２が破断されて開口部１３が缶内部に押し込まれ、飲み口が開口する。
本考案の特徴は、開口用タブ２０のタブ本体部２１の周縁と起こし部３７と折返し部３２の外周にそれぞれ補強用のタブを形成したことにより、タブを形成した部分の強度が補強され、タブを設けていない折曲部３６ａ，３６ｂが容易に折り曲がることにより、指で起こし部３７を僅かな力で極めて容易に起こすことができる点にある。When opening the mouth of the can lid of the drink can configured as described above, inserting a finger into the gap between the raising portion 37 and the can lid panel and raising the raising portion 37 upward, the bent portion 36a, It bends at 36b, and the raising part 37 rises easily with a light fingertip force. Therefore, when a finger is inserted into the inner edge side of the raising portion 37 or the raising portion 37 is picked up by two fingers and pulled upward, the pulling portion 24 is raised upward, and the fixing portion 23 serves as a fulcrum. According to the principle, the pressing part 22 pushes down the opening part 13, the score 12 is broken, the opening part 13 is pushed into the inside of the can, and the drinking mouth opens.
The feature of the present invention is that the reinforcing tabs are formed on the periphery of the tab main body portion 21 of the opening tab 20 and the outer periphery of the raised portion 37 and the folded portion 32, respectively, whereby the strength of the portion where the tab is formed is reinforced, Since the bent portions 36a and 36b not provided with the tab are easily bent, the raised portion 37 can be raised very easily with a slight force.

以上に説明したように、本考案の請求項１〜３記載の各開口用タブは、折曲部の補強リブを設けないことにより容易に折り曲げることができるように構成したものであるが、タブの材質や厚みによっては、折曲部に弱化線（サブスコア）を施して、さらに折り曲がりやすくしてもよい。 As described above, each of the opening tabs according to claims 1 to 3 of the present invention is configured so that it can be easily bent by not providing the reinforcing rib of the bent portion. Depending on the material and thickness, a bending line (subscore) may be applied to the bent portion to make it easier to bend.

請求項１記載のステイオンタブ方式の缶蓋を上方から見た平面図である。It is the top view which looked at the can lid of the steion tub system of Claim 1 from upper direction. （Ａ）は請求項２記載のステイオンタブ方式の缶蓋を上方から見た平面図である。（Ｂ）はドリンク缶全体を斜め上方から見た斜視図である。(A) is the top view which looked at the can lid of the steion tub system of Claim 2 from upper direction. (B) is the perspective view which looked at the whole drink can from diagonally upward. 請求項３記載のステイオンタブ方式の缶蓋を上方から見た平面図である。It is the top view which looked at the can lid of the steion tab system of Claim 3 from upper direction.

Explanation of symbols

１０ドリンク缶
１１缶蓋パネル
１２スコア
１３開口部
２０開口用タブ
２１タブ本体部
２２押下部
２３固着部
２４引上部
２５補強リブ
２６折曲部
２６ａ第１折曲部
２６ｂ第２折曲部
２７起こし部
２７ａ第１起こし部
２７ｂ第２起こし部
２８，２８ａ，２８ｂ補強リブ
２９，２９ａ，２９ｂ指穴
３１空隙部
３２折返し部
３６ａ，３６ｂ折曲部
３７起こし部
３８補強リブ
３９補強リブDESCRIPTION OF SYMBOLS 10 Drink can 11 Can lid panel 12 Score 13 Opening part 20 Opening tab 21 Tab main-body part 22 Depressing part 23 Adhering part 24 Pull-up part 25 Reinforcement rib 26 Bending part 26a 1st bending part 26b 2nd bending part 27 Raising Part 27a First raising part 27b Second raising part 28, 28a, 28b Reinforcing rib 29, 29a, 29b Finger hole 31 Cavity part 32 Folded part 36a, 36b Bending part 37 Raising part 38 Reinforcing rib 39 Reinforcing rib

Claims

The can lid panel is provided with an opening that can be opened by a can opening operation, and an opening tab for opening the opening is attached, and a score is formed in the opening so that a part of the contour is broken when the opening is opened. The opening tab includes a push-down portion that pushes down and opens the opening on the front end side, a pull-up portion that is pulled up from the can-lid panel on the rear end side, and a can at an intermediate position between the push-down portion and the pull-up portion. A fixing portion fixed to the lid panel,
With the can opening operation that raises the pulling part from the can lid panel with your finger, the sticking point becomes a fulcrum by the principle of scissors, and the pressing part becomes the action point to push down the opening of the can lid panel to break the score and open In a steion tab type can lid formed to
The opening tab is surrounded by a left and right straight side formed from the pressing part to the rear end side in a V shape, and is formed on the periphery of the tab main body part including the pressing part, the fixing part, and the pulling part. A reinforcing rib is formed in an annular shape, and a narrow straight belt-like bent portion is extended in contact with one side of the V-shaped straight side of the tab main body, and a raised portion is further interposed through the bent portion. Extending and providing a finger hole in the raised portion and forming a reinforcing rib on the periphery of the raised portion, and the reinforcing rib on the periphery of the tab body portion and the reinforcing rib on the periphery of the raised portion are the bent portion Steion tab type can lid characterized by being formed so as to be discontinuous.

The can lid panel is provided with an opening that can be opened by a can opening operation, and an opening tab for opening the opening is attached, and a score is formed in the opening so that a part of the contour is broken when the opening is opened. The opening tab includes a push-down portion that pushes down and opens the opening on the front end side, a pull-up portion that is pulled up from the can-lid panel on the rear end side, and a can at an intermediate position between the push-down portion and the pull-up portion. A fixing portion fixed to the lid panel,
With the can opening operation that raises the pulling part from the can lid panel with your finger, the sticking point becomes a fulcrum by the principle of scissors, and the pressing part becomes the action point to push down the opening of the can lid panel to break the score and open In a steion tab type can lid formed to
The opening tab is surrounded by a V-shape with the left and right straight sides extending from the pressing portion to the rear end, and the opening tab is annularly reinforced around the periphery of the tab main body portion including the pressing portion, the fixing portion, and the pulling portion. A rib is formed, and a first bent portion having a narrow straight belt shape is extended in contact with one side of the V-shaped straight side of the tab main body portion, and the first bent portion is further provided through the first bent portion. Extending the raised portion, providing a finger hole in the first raised portion, forming a reinforcing rib on the periphery of the first raised portion, and reinforcing rib on the periphery of the tab main body portion and the peripheral edge of the first raised portion And the reinforcing ribs of the tab are not continuous with each other in the first bent portion, and the second bent portion in the form of a narrow straight strip in contact with the other side of the substantially V-shaped straight side of the tab main body portion. And a second raised part is extended through the second bent part, and a finger hole is provided in the second raised part. Reinforcing ribs are formed on the periphery of the second raising part, and the reinforcing ribs on the periphery of the tab main body part and the reinforcing ribs on the periphery of the second raising part are formed so as not to be continuous at the second bent part. Steion tab type can lid characterized by that.

The can lid panel is provided with an opening that can be opened by a can opening operation, and an opening tab for opening the opening is attached, and a score is formed in the opening so that a part of the contour is broken when the opening is opened. The opening tab includes a push-down portion that pushes down and opens the opening on the front end side, a pull-up portion that is pulled up from the can-lid panel on the rear end side, and a can at an intermediate position between the push-down portion and the pull-up portion. The can lid is fixed to the lid panel, and by the can opening operation that raises the pulling part from the can lid panel with a finger, the sticking point becomes a fulcrum by the principle of scissors, and the pressing part becomes the action point. In the steion tab type can lid formed to push down the opening of the panel to break the score and open,
The opening tab has a reverse U-shaped periphery of the tab main body composed of the pressing portion, the fixing portion, and the pull-up portion, and the reverse U-shaped outer periphery along the reverse U-shaped peripheral edge of the tab main body. A letter-shaped gap is provided, an inverted U-shaped raising part slightly larger than this is provided so as to surround the inverted U-shaped peripheral edge of the tab main body across the gap, and the tab main body is pulled. On the rear end side of the upper part, a folded part is provided so as to protrude to the left and right slightly wider than the lateral width of the tab main body part, and the inverted U-shaped raised part is formed to extend from the folded part, Reinforcement ribs are provided on the inverted U-shaped periphery of the tab body, reinforcement ribs are provided on the outer periphery of the inverted U-shaped raising part, and reinforcement ribs are provided at the boundary between the folded part and both ends of the raising part. Steion tab type can lid characterized by not having it.