JP3713631B2

JP3713631B2 - Can mouth with cap with elastic stopper

Info

Publication number: JP3713631B2
Application number: JP13622794A
Authority: JP
Inventors: 泰久広浜
Original assignee: 株式会社ヒロハマ
Priority date: 1994-05-16
Filing date: 1994-05-16
Publication date: 2005-11-09
Anticipated expiration: 2020-11-09
Also published as: JPH07309341A

Description

【０００１】
【産業上の利用分野】
本発明は、石油缶、塗料缶、飲料水缶等の弾性鈎止片付キャップ用缶口に関するものである。
【０００２】
【従来の技術】
従来の弾性鈎止片付キャップ用缶口は、実開昭６２−１３７２１５号公報に示されているように、円筒立上部の側面に頸部を形成し、前記円筒立上部の上端から傾斜円弧部を介して開口巻設部を形成し、前記開口巻設部を前記傾斜円弧部の上端から内側に延びる巻設基部とそれから上方外側へ更に外側下方に延びる巻設中央部とそれから内側に延びる巻設先端部とから形成してなるものが公知である。
【０００３】
【発明が解決しようとする課題】
かかる従来の弾性鈎止片付キャップ用缶口は、巻設中央部の外側下方に延びる部分の上面形状が傾斜円弧部の上面と連続するようになっていないので、傾斜円弧部の上面の傾斜角度がまだ緩やかで、弾性鈎止片付キャップを缶口に嵌着する際に傾斜円弧部の上面を滑らせて嵌合する力がかなり必要となり、作業能率を十分に上げることができなかった。
【０００４】
【課題を解決するための手段】
本発明は、かかる課題を解決するためになされたもので、円筒立上部（３０）の側面に頸部（３１）を形成し、前記円筒立上部（３０）の上端から傾斜円弧部（３２）を介して開口巻設部（４０）を形成し、前記開口巻設部（４０）を前記傾斜円弧部（３２）の上端から内側に延びる巻設基部（４１）とそれから上方外側へ更に外側下方に延びる巻設中央部（４２）とそれから内側に延びる巻設先端部（４３）とから形成してなる弾性鈎止片付キャップ用缶口（２０）に於いて、前記巻設中央部（４２）の外側下方に延びる部分の上面形状を前記傾斜円弧部（３２）の上面と実質的に連続する円弧面を有するように形成し、前記傾斜円弧部（３２）の上端より内側に位置する前記巻設中央部（４２）の外側下端から前記巻設先端部（４３）を内側に延びるようにするとともに、前記巻設基部（４１）を前記傾斜円弧部（３２）の上端から若干沈むように形成し、且つ前記巻設先端部（４３）を前記巻設基部（４１）の上面形状と合致するように形成したことを特徴とする弾性鈎止片付キャップ用缶口としたものである。
【０００５】
【作用】
かかる弾性鈎止片付キャップ用缶口によれば、巻設中央部（４２）の外側下方に延びる部分の上面形状を傾斜円弧部（３２）の上面と実質的に連続する円弧面になるように形成したので、頸部（３１）からその開口巻設部（４０）の上端までの高さ寸法が小さい状態で傾斜円弧部（３２）の上面の傾斜角度を急角度にすることができる。これにより、弾性鈎止片の高さの低い従来一般に広く使用されている弾性鈎止片付キャップを使用することができるとともに、弾性鈎止片付キャップを缶口（２０）に嵌着する際に弾性鈎止片を傾斜円弧部（３２）の上面をスムースに滑らせることができ、これによって嵌合力が小さくて作業能率を優れたものとすることができる。
また、単に傾斜円弧部（３２）より内側に位置する巻設中央部（４２）の外側下端から巻設先端部（４３）を内側に延びるようにすると、開口巻設部（４０）の巻設長さが短くなりその成形が非常に難しくなるが、巻設基部（４１）を傾斜円弧部（３２）の上端から若干沈むよう形成し、巻設先端部（４３）を巻設基部（４１）の上面形状と合致して沈むように形成したので、その沈んだ分だけ開口巻設部（４０）の巻設長さを長くすることができ、開口巻設部（４０）を容易に成形することができるとともに、巻設先端部（４３）の先端切断面に発生する錆の外部への流出を阻止することができる。
更には、巻設先端部４３の先端を巻設中央部４２の根本部分内側に当接したので、巻設中央部４２の上面に上方から衝撃力が加わっても巻設中央部４２の根本部で受けとめることができ、衝撃力に強いものとすることができる。
【０００６】
【実施例】
以下、本発明の一実施例を図１に基づいて説明する。缶天板１０の所定位置に形成された天板カシメ部１１と缶口２０の下端に形成された缶口カシメ部５０とがかしめ成形されて、缶口２０が缶天板１０の上面より上方に突出する状態に固着されている。なお、缶口２０は、缶天板１０より一体に絞りだして形成したものでも良い。缶口２０の両面には、合成樹脂皮膜がラミネートまたは塗装されて形成されている。缶口２０は、円筒立上部３０と開口巻設部４０と缶口カシメ部５０とより構成されている。円筒立上部３０の側面には頸部３１が全周にわたって形成され、弾性鈎止片付キャップの弾性鈎止片が係止できるようになっている。円筒立上部３０上端から傾斜円弧部３２を介して開口巻設部４０が円筒立上部３０の上方内側に位置するように設けられている。
開口巻設部４０は、傾斜円弧部３２から延びる巻設基部４１とこの巻設基部４１から延びる巻設中央部４２とこの巻設中央部４２から延びる巻設先端部４３とから構成されている。巻設基部４１は、傾斜円弧部３２の上端から延びて円弧状に若干沈む部分とそれから略水平に延びる部分とよりなっている。巻設中央部４２は、巻設基部４１の内側端から上方外側に延びる部分とそれから外側下方に延びる部分とよりなっている。巻設中央部４２の外側下方に延びる部分は、傾斜円弧部３２の上面と実質的に連続する円弧面を有するように形成されている。巻設先端部４３は、傾斜円弧部３２より内側に位置する巻設中央部４２の外側下端から巻設基部４１の上面に接触するように巻設基部４１の上面形状と同一形状で内側に延びてその先端が巻設中央部４２の根本部分内側に当接している。
【０００７】
かかる缶口２０によれば、巻設中央部４２の外側下方に延びる部分の上面形状を傾斜円弧部３２の上面と実質的に連続する円弧面になるように形成したので、頸部３１からその開口巻設部４０の上端までの高さ寸法が小さい状態で傾斜円弧部３２の上面の傾斜角度を急角度にすることができる。これにより、弾性鈎止片の高さの低い従来一般に広く使用されている弾性鈎止片付キャップを使用することができるとともに、弾性鈎止片付キャップを缶口２０に嵌着する際に弾性鈎止片を傾斜円弧部３２の上面をスムースに滑らせることができ、これによって嵌合力が小さくて作業能率を優れたものとすることができる。
また、単に傾斜円弧部３２より内側に位置する巻設中央部４２の外側下端から巻設先端部４３を内側に延びるようにすると、開口巻設部４０の巻設長さが短くなりその成形が非常に難しくなるが、巻設基部４１を傾斜円弧部３２の上端から若干沈むよう形成し、巻設先端部４３を巻設基部４１の上面形状と合致して沈むように形成したので、その沈んだ分だけ開口巻設部４０の巻設長さを長くすることができ、開口巻設部４０を容易に成形することができるとともに、巻設先端部４３の先端切断面に発生する錆の外部への流出を阻止することができる。
更には、巻設先端部４３の先端を巻設中央部４２の根本部分内側に当接したので、巻設中央部４２の上面に上方から衝撃力が加わっても巻設中央部４２の根本部で受けとめることができ、衝撃力に強いものとすることができる。
【０００８】
【発明の効果】
本発明によれば、弾性鈎止片の高さの低い従来一般に広く使用されている弾性鈎止片付キャップを使用することができるとともに、弾性鈎止片付キャップを缶口（２０）に嵌着する際に弾性鈎止片を傾斜円弧部（３２）の上面をスムースに滑らせることができて嵌合力が小さく作業能率を優れたものとすることができ、また、開口巻設部（４０）の巻設長さを長くすることができて開口巻設部（４０）を容易に成形することができ、更には、巻設先端部（４３）の先端切断面に発生する錆の外部への流出を阻止することができる弾性鈎止片付キャップ用缶口を提供することができ、巻設中央部４２の上面に上方から衝撃力が加わっても巻設中央部４２の根本部で受けとめることができ、衝撃力に強いものとすることができる。
【図面の簡単な説明】
【図１】本発明の弾性鈎止片付キャップ用缶口の縦断面図である。
【符号の説明】
缶天板…１０、天板カシメ部…１１、缶口…２０、円筒立上部…３０、頸部…３１、傾斜円弧部…３２、開口巻設部…４０、巻設基部…４１、巻設中央部…４２、巻設先端部…４３、缶口カシメ部…５０。[0001]
[Industrial application fields]
The present invention relates to a can mouth for a cap with an elastic tacking piece such as a petroleum can, a paint can, and a drinking water can.
[0002]
[Prior art]
As shown in Japanese Utility Model Laid-Open No. 62-137215, a conventional can mouth for a cap with an elastic stopper piece is formed with a neck portion on a side surface of a cylindrical upright portion, and an inclined arc from the upper end of the cylindrical upright portion. An opening winding portion is formed through the portion, and the opening winding portion extends inward from the upper end of the inclined arc portion, and then a winding central portion that extends further upward and outward, and further extends inward. What is formed from a winding tip is known.
[0003]
[Problems to be solved by the invention]
In such a conventional can mouth for a cap with an elastic stopper piece, the upper surface shape of the portion extending outward and downward from the winding center is not continuous with the upper surface of the inclined arc portion. The angle was still slow, and when fitting the cap with elastic stopper piece into the can mouth, the force to slide and fit the upper surface of the inclined arc part was quite necessary, and the work efficiency could not be raised sufficiently. .
[0004]
[Means for Solving the Problems]
The present invention has been made to solve such a problem. A neck portion (31) is formed on a side surface of the cylindrical upright portion (30), and an inclined arc portion (32) is formed from the upper end of the cylindrical upright portion (30). An opening winding portion (40) is formed through the winding winding portion (40), and the opening winding portion (40) extends inwardly from the upper end of the inclined arc portion (32), and then further outward and downward. In the can mouth (20) for a cap with an elastic stopper piece formed by a winding central portion (42) extending inward and a winding distal end portion (43) extending inwardly from the winding central portion (42), the winding central portion (42 ) Is formed so as to have an arc surface substantially continuous with the upper surface of the inclined arc portion (32), and is located on the inner side of the upper end of the inclined arc portion (32). From the outer lower end of the winding central part (42), the winding tip (43) The winding base (41) is formed so as to sink slightly from the upper end of the inclined arc portion (32), and the winding tip (43) is formed on the winding base (41). It is a can mouth for a cap with an elastic tacking piece, which is formed so as to match the shape of the upper surface.
[0005]
[Action]
According to the cap mouth with the elastic stopper piece, the upper surface shape of the portion extending outward and downward from the winding center portion (42) is an arc surface substantially continuous with the upper surface of the inclined arc portion (32). Therefore, the inclination angle of the upper surface of the inclined arc portion (32) can be made steep with a small height dimension from the neck portion (31) to the upper end of the opening winding portion (40). Thereby, while being able to use a conventionally widely used cap with an elastic tacking piece whose height of the elastic tacking piece is low, when fitting the cap with an elastic tacking piece to the can mouth (20), In addition, the elastic stopper piece can be smoothly slid on the upper surface of the inclined arc portion (32), so that the fitting force is small and the working efficiency is excellent.
Further, when the winding tip end portion (43) extends inwardly from the outer lower end of the winding center portion (42) located inside the inclined arc portion (32), the opening winding portion (40) is wound. Although the length is shortened and molding becomes very difficult, the winding base (41) is formed so as to sink slightly from the upper end of the inclined arc portion (32), and the winding tip (43) is formed as the winding base (41). Since it was formed so as to be sunk in accordance with the shape of the upper surface, the winding length of the opening winding portion (40) can be increased by the amount of sinking, and the opening winding portion (40) can be easily formed. In addition, it is possible to prevent the rust generated on the cutting end surface of the winding tip (43) from flowing out to the outside.
Furthermore, since the tip of the winding tip 43 is in contact with the inner side of the root of the winding center 42, even if an impact force is applied to the upper surface of the winding center 42 from above, the root of the winding center 42 is obtained. Can be received and can withstand impact force.
[0006]
【Example】
An embodiment of the present invention will be described below with reference to FIG. The top plate crimping portion 11 formed at a predetermined position of the can top plate 10 and the can mouth crimping portion 50 formed at the lower end of the can mouth 20 are caulked to form the can mouth 20 above the upper surface of the can top plate 10. It is fixed to the state which protrudes to. The can mouth 20 may be formed by squeezing the can top plate 10 integrally. A synthetic resin film is laminated or painted on both surfaces of the can mouth 20. The can mouth 20 includes a cylindrical upright portion 30, an opening winding portion 40, and a can mouth caulking portion 50. A neck portion 31 is formed on the side surface of the cylindrical upright portion 30 over the entire circumference so that the elastic locking piece of the cap with the elastic locking piece can be locked. An opening winding portion 40 is provided from the upper end of the cylindrical upright portion 30 through the inclined arc portion 32 so as to be positioned on the upper inner side of the cylindrical upright portion 30.
The opening winding portion 40 includes a winding base portion 41 extending from the inclined arc portion 32, a winding center portion 42 extending from the winding base portion 41, and a winding tip portion 43 extending from the winding center portion 42. . The winding base 41 includes a portion extending from the upper end of the inclined arc portion 32 and slightly sinking in an arc shape, and a portion extending substantially horizontally therefrom. The winding central portion 42 is composed of a portion extending upward and outward from the inner end of the winding base portion 41 and a portion extending outward and downward therefrom. A portion extending outward and downward from the winding center portion 42 is formed to have an arc surface substantially continuous with the upper surface of the inclined arc portion 32. The winding tip 43 extends inward in the same shape as the top surface of the winding base 41 so as to come into contact with the top surface of the winding base 41 from the outer lower end of the winding center portion 42 located inside the inclined arc portion 32. The tip of the lever is in contact with the inside of the root portion of the winding central portion 42.
[0007]
According to the can opening 20, the shape of the upper surface of the portion extending outward and downward from the winding center portion 42 is formed to be an arc surface substantially continuous with the upper surface of the inclined arc portion 32. The inclination angle of the upper surface of the inclined arc part 32 can be made steep while the height dimension to the upper end of the opening winding part 40 is small. This makes it possible to use a conventionally widely used cap with an elastic tacking piece whose height of the elastic tacking piece is low and elastic when fitting the cap with an elastic tacking piece to the can mouth 20. The stopper piece can be smoothly slid on the upper surface of the inclined arc portion 32, whereby the fitting force is small and the work efficiency is excellent.
Further, if the winding tip portion 43 extends inwardly from the outer lower end of the winding center portion 42 located inside the inclined arc portion 32, the winding length of the opening winding portion 40 is shortened and the molding thereof is performed. Although it becomes very difficult, the winding base 41 is formed so as to sink slightly from the upper end of the inclined arc portion 32, and the winding leading end 43 is formed so as to sink in conformity with the upper surface shape of the winding base 41. The winding length of the opening winding portion 40 can be increased by the amount, the opening winding portion 40 can be easily formed, and the outside of the rust generated on the front end cut surface of the winding tip portion 43. Can be prevented.
Furthermore, since the tip of the winding tip 43 is in contact with the inner side of the root of the winding center 42, even if an impact force is applied to the upper surface of the winding center 42 from above, the root of the winding center 42 is obtained. Can be received and can withstand impact force.
[0008]
【The invention's effect】
According to the present invention, it is possible to use a conventionally widely used cap with an elastic locking piece whose height of the elastic locking piece is low, and fit the cap with the elastic locking piece into the can mouth (20). When worn, the elastic stopper piece can be smoothly slid on the upper surface of the inclined arc portion (32), the fitting force is small, the work efficiency is excellent, and the opening winding portion (40 ) Can be lengthened, the opening winding portion (40) can be easily formed, and further, the outside of the rust generated on the cutting end surface of the winding tip portion (43). It is possible to provide a cap canister with an elastic stopper piece that can prevent the outflow of the coil, and even if an impact force is applied to the upper surface of the winding central portion 42 from above, it is received at the base portion of the winding central portion 42. it can, Ru can be made resistant to impact force.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a can mouth for a cap with an elastic locking piece of the present invention.
[Explanation of symbols]
Can top plate ... 10, top plate caulking part ... 11, can mouth ... 20, cylindrical standing upper part ... 30, neck part ... 31, inclined arc part ... 32, opening winding part ... 40, winding base part ... 41, winding Center part ... 42, winding tip part ... 43, can mouth caulking part ... 50.

Claims

Forming a neck (31) on the side of the cylindrical upright (30);
An opening winding part (40) is formed from the upper end of the cylindrical upright part (30) through the inclined arc part (32),
The opening winding portion (40) extends from the upper end of the inclined circular arc portion (32) to the inside, the winding base portion (41), and then the winding center portion (42) extending further outward and downward from the upper side to the inner side. In the cap mouth (20) with an elastic stopper piece formed from the winding tip (43),
A portion extending outwardly from the winding center portion (4 2 ) is formed so as to extend from an inner end of a portion extending substantially horizontally of the winding base portion (41), and
Forming an upper surface shape of a portion extending downward and outward of the winding central portion (42) so as to have an arc surface substantially continuous with an upper surface of the inclined arc portion (32);
The winding tip (43) extends inward from the outer lower end of the winding center (42) located inside the upper end of the inclined arc portion (32), and
The winding base (41) is formed so as to be composed of a part that extends in a circular arc shape from the upper end of the inclined arc part (32) to the inside and slightly sinks, and a part that extends substantially horizontally inward from the part.
The winding tip (43) is formed of an arcuate portion extending inward and downward so as to match the shape of the upper surface of the winding base (41) and a portion extending substantially horizontally inward from the arcuate portion. A cap mouth with an elastic stopper piece, characterized in that it is formed so as to be in contact with the inner side of the root portion of the winding central portion (42).