JP2019199307A5 - - Google Patents
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- JP2019199307A5 JP2019199307A5 JP2019155932A JP2019155932A JP2019199307A5 JP 2019199307 A5 JP2019199307 A5 JP 2019199307A5 JP 2019155932 A JP2019155932 A JP 2019155932A JP 2019155932 A JP2019155932 A JP 2019155932A JP 2019199307 A5 JP2019199307 A5 JP 2019199307A5
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上記課題を解決して、このような目的を達成するために、本発明は、缶軸を中心とする有底筒状の缶本体の上端部に、キャップが取り付けられる円筒状のキャップ取付部が形成された金属製のボトル缶であって、上記キャップ取付部は、上端側に雄ネジ部を備えるとともに、下端側には下方に向かうに従い外周側に膨らんだ後に縮径して上記キャップの下端の開放端部が巻き締められる膨出部を備え、上記膨出部は、上記缶軸に沿った断面が該缶軸回りの全周に亙って同一で、上記雄ネジ部と上記缶軸方向に分けられており、上記膨出部は、上記缶軸に沿った断面において直線状に下方に向かうに従い外周側に膨らむ拡径部を上端側に備えるとともに、下端側には上記缶軸に沿った断面において直線状に下方に向かうに従い縮径する縮径部を備え、上記拡径部の上記缶軸に対する傾斜角は３°〜３０°とされ、上記縮径部の上記缶軸に対する傾斜角が４０°〜５０°とされていることを特徴とする。 In order to solve the above-mentioned problems and achieve such an object, the present invention provides a cylindrical cap mounting portion to which a cap is mounted at an upper end portion of a bottomed cylindrical can body centered on a can shaft. The formed metal bottle can, wherein the cap mounting portion has a male screw portion on an upper end side, and the lower end side is swelled to the outer peripheral side as it goes downward, and then is reduced in diameter and the lower end of the cap. A bulging portion around which the open end is wound, the bulging portion having the same cross section along the can axis over the entire circumference around the can axis, and having the male screw portion and the can shaft The swelling portion is provided at the upper end with a diameter-enlarging portion that swells toward the outer periphery as it goes linearly downward in a cross section along the can axis, and at the lower end, the swelling portion has In the cross-section along the line, For example, the inclination angle with respect to the can axis of the enlarged diameter portion is a 3 ° to 30 °, the inclination angle with respect to the can axis of the reduced diameter portion is characterized in that there is a 40 ° to 50 °.
また、本発明では、上記膨出部は、上記缶軸に沿った断面において直線状に下方に向かうに従い外周側に膨らむ拡径部を上端側に備えている。このような角度範囲であれば、膨出部の座屈強度が一層向上する。なお、この拡径部の缶軸Ｃに対する傾斜角は５°〜１５°であることがより好ましい。 Further, in the present invention, the bulging portion is provided at the upper end with a diameter-enlarging portion which bulges toward the outer peripheral side as it goes linearly downward in a cross section along the can axis. With such an angle range, the buckling strength of the bulging portion is further improved. In addition, it is more preferable that the inclination angle of the enlarged diameter portion with respect to the can axis C is 5 ° to 15 °.
さらに、本発明では、上記膨出部の下端側に、缶軸に沿った断面において直線状に下方に向かうに従い縮径する縮径部を備えており、この縮径部の缶軸に対する傾斜角は４０°〜５０°とされている。このような角度範囲であれば、キャップの開放端部を裾巻きするのに適している。Further, in the present invention, the lower end side of the bulging portion is provided with a diameter-reducing portion whose diameter is reduced linearly downward in a cross section along the can axis, and an inclination angle of the reduced diameter portion with respect to the can axis. Is set to 40 ° to 50 °. With such an angle range, it is suitable to hem the open end of the cap.
図１および図２は、本発明の一実施形態を説明する上での第１の参考例を示すものである。本参考例のボトル缶において、その缶本体１は、底部２と、この底部２と一体に形成されて底部２の外周縁から上端側（図１および図２において上側）に延びる外周部３とを備えた缶軸Ｃを中心とする概略多段の有底円筒状をなしている。底部２には、缶軸Ｃ方向の内側（缶本体１の上端側）に凹む断面略円弧状のドーム部２ａが中央に形成されるとともに、このドーム部２ａの外周には缶軸Ｃ方向の外側（缶本体１の下端側）に突出する環状凸部２ｂが缶軸Ｃ回りの周方向に連続して形成されている(図５参照。）。 1 and 2 show a first reference example for explaining an embodiment of the present invention. In the bottle can of the present reference example , the can body 1 has a bottom 2 and an outer periphery 3 formed integrally with the bottom 2 and extending from the outer periphery of the bottom 2 to the upper end side (upward in FIGS. 1 and 2). And has a substantially multi-stage cylindrical shape with a bottom centered on a can axis C provided with. The bottom 2 has a dome portion 2a having a substantially arc-shaped cross section recessed inward in the direction of the can axis C (upper side of the can body 1) at the center, and an outer periphery of the dome portion 2a in the direction of the can axis C. An annular convex portion 2b protruding outward (at the lower end side of the can main body 1) is formed continuously in the circumferential direction around the can axis C (see FIG. 5).
また、この第１の参考例では、上記膨出部１０は、缶軸Ｃに沿った断面において凸曲線を描きつつ下方に向かうに従い外周側に膨らむ拡径部１０ａを上端側に備えるとともに、下端側にはこの拡径部１０ａの断面がなす凸曲線に滑らかに連なる断面凸曲線状をなして下方に向かうに従い縮径する縮径部１０ｂを備えている。縮径部１０ｂの断面がなす凸曲線は拡径部１０ａがなす凸曲線よりも曲率半径が小さく、この縮径部１０ｂに上記キャップの開放端部が巻き締められる。そして、このような第１の参考例に対して、本発明の一実施形態では、拡径部１０ａは、缶軸Ｃに沿った断面において直線状に下方に向かうに従い外周側に膨らんでおり、その缶軸Ｃに対する傾斜角は３°〜３０°とされていて、５°〜１５°がより好ましい。このような角度範囲であれば、膨出部１０の座屈強度が一層向上する。また、縮径部１０ｂも、缶軸Ｃに沿った断面において直線状に下方に向かうに従い縮径しており、その缶軸Ｃに対する傾斜角は４０°〜５０°とされている。このような角度範囲であれば、キャップの開放端部を裾巻きするのに適している。なお、この膨出部１０における拡径部１０ａと縮径部１０ｂとの境界、すなわち膨出部１０の最大外径の位置における該膨出部１０の缶軸Ｃに対する径方向の厚さｔは、上述のような元板厚が薄肉化された金属板から成形されるボトル缶においては０．１６５ｍｍ〜０．２２０ｍｍの範囲とされる。 Further, in the first reference example, the bulging portion 10 is provided with an enlarged diameter portion 10a which bulges toward the outer periphery as it goes downward while drawing a convex curve in a cross section along the can axis C at the upper end, and has a lower end. On the side, there is provided a diameter-reducing portion 10b which forms a convex cross-sectional shape which is smoothly connected to the convex curve formed by the cross-section of the large-diameter portion 10a, and whose diameter decreases downward. The convex curve formed by the cross section of the reduced diameter portion 10b has a smaller radius of curvature than the convex curve formed by the enlarged diameter portion 10a, and the open end of the cap is wound around the reduced diameter portion 10b. In contrast to such a first reference example, in one embodiment of the present invention, the enlarged diameter portion 10a swells outward toward the lower side in a straight line in a cross section along the can axis C , The inclination angle with respect to the can axis C is set to 3 ° to 30 °, and more preferably 5 ° to 15 °. With such an angle range, the buckling strength of the bulging portion 10 is further improved. The diameter-reduced portion 10b also has a diameter that decreases linearly downward in a cross section along the can axis C, and the inclination angle with respect to the can axis C is 40 ° to 50 ° . With such an angle range, it is suitable to hem the open end of the cap. The boundary between the enlarged diameter portion 10a and the reduced diameter portion 10b in the bulging portion 10, that is, the radial thickness t of the bulging portion 10 with respect to the can axis C at the position of the maximum outer diameter of the bulging portion 10 is In a bottle can formed from a metal plate having a reduced original plate thickness as described above, the range is 0.165 mm to 0.220 mm.
次に、図３および図４は、本発明の実施形態に対する第２の参考例を示すものであり、図１および図２に示した第１の参考例と供給する部分には同一の符号を配して説明を省略する。この第２の参考例においては、キャップ取付部８の雄ネジ部９と膨出部１０との間に、キャップ取付部８の内周側に凹む凹部１１が缶軸Ｃ回りの全周に亙って形成されていることを特徴とする。 Next, FIGS. 3 and 4 show a second reference example of the embodiment of the present invention, in which parts supplied with the same reference numerals as those in the first reference example shown in FIGS. The description is omitted. In the second reference example , a concave portion 11 recessed on the inner peripheral side of the cap mounting portion 8 is provided between the male screw portion 9 and the bulging portion 10 of the cap mounting portion 8 over the entire circumference around the can axis C. It is characterized by being formed.
本参考例における凹部１１は、缶軸Ｃ方向において雄ネジ部９の終端から僅かに下端側に間隔をあけた位置から缶軸Ｃに沿った断面において凹曲線を描きつつ内周側に凹み始め、最も凹んだ位置を経た後に外周側に切れ上がって膨出部１０の拡径部１０ａに交差している。この凹部１１が缶軸Ｃに沿った断面においてなす凹曲線の曲率半径は、本参考例では拡径部１０ａの断面がなす凸曲線の曲率半径よりも大きくされている。 The concave portion 11 in this reference example starts to be concave toward the inner peripheral side while drawing a concave curve in a cross section along the can axis C from a position slightly spaced from the end of the external thread portion 9 in the direction of the can axis C to the lower end side. After passing through the most concave position, it is cut off to the outer peripheral side and intersects with the enlarged diameter portion 10 a of the bulging portion 10. In this embodiment , the radius of curvature of the concave curve formed by the concave portion 11 in the cross section along the can axis C is larger than the radius of curvature of the convex curve formed by the cross section of the enlarged diameter portion 10a.
このように構成された第２の参考例では、この凹部１１によって雄ネジ部９と膨出部１０とをさらに確実に缶軸Ｃ方向に分けることができ、雄ネジ部９が膨出部１０に到達して食い込むのを防ぐことができる。また、こうして内周側に凹む凹部１１が全周に亙って形成されることにより、キャップ取付部８の缶軸Ｃ方向への荷重に対する座屈強度を一層向上させることができる。 In the second reference example configured as described above, the male screw portion 9 and the bulging portion 10 can be more reliably divided in the direction of the can axis C by the concave portion 11, and the male screw portion 9 is Can be prevented from digging into. In addition, since the concave portion 11 that is depressed toward the inner periphery is formed over the entire circumference, the buckling strength of the cap mounting portion 8 against a load in the direction of the can axis C can be further improved.
さらに、図５および図６は、それぞれ本発明の実施形態に対する第３、第４の参考例を示すものであって、図１から図４に示した第１、第２の参考例と供給する部分にはやはり同一の符号を配して説明を省略する。これら第３、第４の参考例においては、上記第１、第２の参考例における雄ネジ部９の有効ネジ巻き数が２．２巻きであったのに対し、雄ネジ部９の有効ネジ巻き数が１．０巻き〜１．７巻きの範囲（例えば１．５巻き）とされていることを特徴とする。なお、図５に示す第３の参考例では凹部１１がなく、図６に示す第４の参考例では雄ネジ部９と膨出部１０との間に凹部１１が形成されている。 FIGS. 5 and 6 show a third and a fourth reference example for the embodiment of the present invention, respectively, which are supplied with the first and the second reference examples shown in FIGS. The same reference numerals are allotted to the portions, and the description is omitted. In the third and fourth reference examples , the effective screw number of the male screw portion 9 in the first and second reference examples was 2.2, whereas the effective screw number of the male screw portion 9 was 2.2. The number of turns is in the range of 1.0 to 1.7 turns (for example, 1.5 turns). In the third embodiment shown in FIG. 5, there is no concave portion 11, and in the fourth embodiment shown in FIG. 6, the concave portion 11 is formed between the male screw portion 9 and the bulging portion 10.
このような第３、第４の参考例では、有効ネジ巻き数が少ないので、雄ネジ部９の缶軸Ｃ方向の長さを短くすることができる。従って、キャップ取付部８や、このキャップ取付部８に取り付けられるキャップの缶軸Ｃ方向の長さも短くすることができるので、缶本体１の薄肉化と併せて、雄ネジ部９と膨出部１０とを缶軸Ｃ方向に分けても、確実にボトル缶やキャップ付きボトル缶の軽量化を促すことが可能となる。 In the third and fourth reference examples , since the number of effective screw turns is small, the length of the male screw portion 9 in the direction of the can axis C can be reduced. Therefore, the length of the cap attaching portion 8 and the cap attached to the cap attaching portion 8 in the direction of the can axis C can also be reduced, so that the male screw portion 9 and the bulging portion can be formed together with the thinning of the can body 1. Even if 10 is divided in the direction of the can axis C, it is possible to surely promote the weight reduction of the bottle can and the bottle can with cap.
Claims (3)
上記キャップ取付部は、上端側に雄ネジ部を備えるとともに、下端側には下方に向かうに従い外周側に膨らんだ後に縮径して上記キャップの下端の開放端部が巻き締められる膨出部を備え、
上記膨出部は、上記缶軸に沿った断面が該缶軸回りの全周に亙って同一で、上記雄ネジ部と上記缶軸方向に分けられており、
上記膨出部は、上記缶軸に沿った断面において直線状に下方に向かうに従い外周側に膨らむ拡径部を上端側に備えるとともに、下端側には上記缶軸に沿った断面において直線状に下方に向かうに従い縮径する縮径部を備え、
上記拡径部の上記缶軸に対する傾斜角は３°〜３０°とされ、上記縮径部の上記缶軸に対する傾斜角が４０°〜５０°とされていることを特徴とするボトル缶。 At the upper end of a bottomed cylindrical can body centered on the can axis, a metal bottle can formed with a cylindrical cap mounting portion to which a cap is mounted,
The cap mounting portion has a male screw portion on the upper end side, and has a swelling portion on the lower end side, which expands toward the outer periphery as it goes downward, and then has a reduced diameter and an open end at the lower end of the cap is wound around. Prepare,
The bulging portion has the same cross section along the can axis over the entire circumference around the can axis, and is divided in the male screw portion and the can axis direction .
The swelling portion is provided with an enlarged diameter portion that swells toward the outer periphery as it goes downward in a straight line in a cross section along the can axis at an upper end side, and has a linear shape in a cross section along the can axis at a lower end side. It has a diameter-reducing portion that decreases in diameter as it goes down,
A bottle can, wherein an inclination angle of the enlarged diameter portion with respect to the can axis is 3 ° to 30 °, and an inclination angle of the reduced diameter portion with respect to the can axis is 40 ° to 50 ° .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019155932A JP7262344B2 (en) | 2019-08-28 | 2019-08-28 | bottle can |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019155932A JP7262344B2 (en) | 2019-08-28 | 2019-08-28 | bottle can |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2017059127A Division JP2018162071A (en) | 2017-03-24 | 2017-03-24 | Bottle can |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2019199307A JP2019199307A (en) | 2019-11-21 |
| JP2019199307A5 true JP2019199307A5 (en) | 2020-01-09 |
| JP7262344B2 JP7262344B2 (en) | 2023-04-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2019155932A Active JP7262344B2 (en) | 2019-08-28 | 2019-08-28 | bottle can |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP7262344B2 (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5718352A (en) * | 1994-11-22 | 1998-02-17 | Aluminum Company Of America | Threaded aluminum cans and methods of manufacture |
| JP4301667B2 (en) * | 1999-12-14 | 2009-07-22 | 大和製罐株式会社 | Metal container and manufacturing method thereof |
| JP3758571B2 (en) * | 2001-12-26 | 2006-03-22 | 三菱マテリアル株式会社 | Bottle can manufacturing method and bottle can manufacturing apparatus |
| JP4218001B2 (en) * | 2002-01-30 | 2009-02-04 | 武内プレス工業株式会社 | Metal container and method for manufacturing metal container |
| JP4131808B2 (en) * | 2002-08-09 | 2008-08-13 | ユニバーサル製缶株式会社 | Bottle can screw forming apparatus and bottle can manufacturing method |
| JP4137552B2 (en) * | 2002-08-09 | 2008-08-20 | ユニバーサル製缶株式会社 | Thread forming apparatus and bottle can body manufacturing method |
| JP5937337B2 (en) * | 2011-11-18 | 2016-06-22 | 大和製罐株式会社 | Manufacturing method of bottle-shaped can and bottle-shaped can |
| CN105121289A (en) * | 2012-02-17 | 2015-12-02 | 可口可乐公司 | Metal beverage container with improved finish geometry |
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