JP2019206343A - Metal container and metal container with lid body - Google Patents

Metal container and metal container with lid body Download PDF

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Publication number
JP2019206343A
JP2019206343A JP2016195670A JP2016195670A JP2019206343A JP 2019206343 A JP2019206343 A JP 2019206343A JP 2016195670 A JP2016195670 A JP 2016195670A JP 2016195670 A JP2016195670 A JP 2016195670A JP 2019206343 A JP2019206343 A JP 2019206343A
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metal container
curled
locking groove
convex curved
curved surface
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法夫 山内
Norio Yamauchi
法夫 山内
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TMC Japan Co Ltd
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TMC Japan Co Ltd
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Priority to JP2016195670A priority Critical patent/JP2019206343A/en
Priority to PCT/JP2017/032590 priority patent/WO2018066308A1/en
Publication of JP2019206343A publication Critical patent/JP2019206343A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
    • B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents

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  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Closures For Containers (AREA)

Abstract

To provide a metal container which can inhibit a body part from being damaged by a curl part effectively, and to provide a metal container with a lid body.SOLUTION: A metal container 10 included in a metal container 1 with a lid body integrally has: a body part 11 having a bottomed cylindrical shape and opening at one end; and a curl part 17 which is formed so as to be connected to the one end of the body part 11 and expand to the radial outer side. A curved surface portion 19c of a protrusion of a tip portion 19 of the curl part 17 contacts with a recessed surface in an engagement groove 16a1 which is an outer peripheral surface of the body part 11.SELECTED DRAWING: Figure 3

Description

本発明は、金属容器および蓋体付金属容器に関する。   The present invention relates to a metal container and a metal container with a lid.

一般に、清涼飲料水等の容器に用いられる金属容器として、金属容器の開口部に着脱可能なキャップが螺着されたボトル缶や、金属容器の開口部に蓋体が被着された広口容器等が広く提供されている。   In general, as a metal container used for a container such as a soft drink, a bottle can in which a cap that can be attached to and detached from the opening of the metal container is screwed, a wide-mouth container in which a lid is attached to the opening of the metal container, etc. Are widely available.

このような金属容器の一例が特許文献１に開示されている。特許文献１に開示されている金属容器は、有底筒状の胴部の一端に開口部が設けられており、この開口部には、胴部の一端がその径方向外方に向けて折り返されることによりカール部が形成されている。そして、胴部の外周面には、径方向内方に向けて凹んだ係止溝が設けられており、カール部の先端が係止溝の内部に収容されている。そのため、この金属容器では、キャップや蓋体を被着する際に、カール部に対して容器の軸線方向および径方向内方に向けた荷重が加えられても、カール部の先端の移動が規制されて、カール部の先端が移動してしまうことによる変形を抑制できる。   An example of such a metal container is disclosed in Patent Document 1. The metal container disclosed in Patent Document 1 is provided with an opening at one end of a bottomed cylindrical body, and one end of the body is folded back outward in the radial direction in this opening. As a result, a curled portion is formed. The outer peripheral surface of the body portion is provided with a locking groove that is recessed inward in the radial direction, and the tip of the curled portion is accommodated inside the locking groove. Therefore, in this metal container, even when a load is applied to the curled portion in the axial direction and the radially inward direction when the cap or lid is attached, the movement of the tip of the curled portion is restricted. Thus, deformation due to movement of the tip of the curled portion can be suppressed.

特許第４９９０７３６号公報Japanese Patent No. 4990736

しかしながら、上記金属容器では、胴部の係止溝内においてカール部の先端が胴部外周面に突き立てられているので、例えば、カール部に荷重がかかった際にカール部の先端の角部によって胴部が傷ついてしまうおそれがあった。   However, in the metal container, since the tip of the curl portion protrudes from the outer peripheral surface of the barrel portion in the locking groove of the barrel portion, for example, when the load is applied to the curl portion, the corner portion at the tip of the curl portion There was a risk of damaging the torso.

そこで、本発明は、カール部による胴部の損傷を効果的に抑制できる金属容器および蓋体付金属容器を提供することを目的とする。   Then, an object of this invention is to provide the metal container and the metal container with a lid which can suppress the damage of the trunk | drum by a curl part effectively.

上記目的を達成するために、本発明の一態様の金属容器は、一端が開口した有底筒状の胴部を有する金属容器であって、前記胴部の一端に連接されかつ径方向外方に向けて膨出するように形成されたカール部を有し、前記カール部の凸の曲面部分が、前記胴部の外周面に当接していることを特徴とする。   In order to achieve the above object, a metal container according to an aspect of the present invention is a metal container having a bottomed cylindrical body having an open end, and is connected to one end of the body and is radially outward. The curled portion is formed so as to bulge out toward the surface, and the convex curved portion of the curled portion is in contact with the outer peripheral surface of the barrel portion.

本発明によれば、胴部の一端が径方向外方に向けて折り返されたカール部に設けられた凸の曲面部分が、胴部の外周面に当接している。このようにしたことから、カール部の先端の角部などの鋭角な箇所が胴部の外周面に突き当たることがなく、角部のない滑らかな凸の曲面部分が胴部の外周面に当接していることにより、カール部に荷重がかかった際に胴部が傷ついてしまうことを効果的に抑制できる。   According to the present invention, the convex curved surface portion provided on the curl portion in which one end of the body portion is folded back outward in the radial direction is in contact with the outer peripheral surface of the body portion. As a result, sharp corners such as the corners at the tip of the curl portion do not hit the outer peripheral surface of the barrel portion, and a smooth convex curved surface portion without corner portions abuts on the outer peripheral surface of the barrel portion. Therefore, it is possible to effectively suppress the body portion from being damaged when a load is applied to the curled portion.

本発明においては、前記胴部の外周面に、全周にわたって径方向内方に向けて凹んだ係止溝が設けられ、前記カール部の凸の曲面部分が、前記係止溝内の凹面に当接していることが好ましい。このようにすることで、係止溝内にカール部の凸の曲面部分が設けられた箇所が係止されて、カール部の当該箇所の移動が規制されるので、カール部に荷重がかかった際の変形を抑制することができる。   In the present invention, the outer circumferential surface of the body portion is provided with a locking groove that is recessed radially inward over the entire circumference, and the convex curved surface portion of the curled portion is formed in the concave surface in the locking groove. It is preferable that they are in contact. By doing in this way, the location where the convex curved surface portion of the curl portion is provided in the locking groove is locked, and the movement of the portion of the curl portion is restricted, so a load is applied to the curl portion. The deformation at the time can be suppressed.

本発明においては、前記係止溝内の凹面の曲率半径が、前記カール部の凸の曲面部分の曲率半径以上であることが好ましい。さらには、前記係止溝内の凹面の曲率半径が、前記カール部の凸の曲面部分の曲率半径と等しいことがより好ましい。このようにすることで、係止溝内の凹面とカール部の凸の曲面部分との接触面積をより大きくすることができ、カール部に荷重がかかった際に胴部が傷ついてしまうことをより効果的に抑制できる。   In this invention, it is preferable that the curvature radius of the concave surface in the said locking groove is more than the curvature radius of the convex curved surface part of the said curl part. Furthermore, it is more preferable that the radius of curvature of the concave surface in the locking groove is equal to the radius of curvature of the convex curved portion of the curled portion. By doing so, the contact area between the concave surface in the locking groove and the convex curved surface portion of the curl portion can be increased, and the trunk portion is damaged when a load is applied to the curl portion. It can suppress more effectively.

上記目的を達成するために、本発明の他の一態様の蓋体付金属容器は、上記金属容器と、液体が収容された前記金属容器の開口を塞ぐように取り付けられた蓋体と、を有することを特徴とする。本発明によれば、上記金属容器を有するので、カール部に荷重がかかった際に胴部が傷ついてしまうことを効果的に抑制できる。   In order to achieve the above object, a metal container with a lid according to another aspect of the present invention includes the metal container and a lid attached so as to close an opening of the metal container containing a liquid. It is characterized by having. According to this invention, since it has the said metal container, when a load is applied to a curl part, it can suppress effectively that a trunk | drum will be damaged.

本発明によれば、カール部による胴部の損傷を効果的に抑制できる。   ADVANTAGE OF THE INVENTION According to this invention, damage to the trunk | drum by a curl part can be suppressed effectively.

本発明の一実施形態に係る蓋体付金属容器の正面図である。It is a front view of the metal container with a lid concerning one embodiment of the present invention. 図１の蓋体付金属容器の蓋体近傍を説明する図である。It is a figure explaining the cover body vicinity of the metal container with a cover of FIG. 図１の蓋体付金属容器の口金部近傍を拡大した縦断面図である。It is the longitudinal cross-sectional view which expanded the nozzle | cap | die part vicinity of the metal container with a cover of FIG. 図１の金属容器の変形例の構成を示す拡大縦断面図である。It is an expanded longitudinal cross-sectional view which shows the structure of the modification of the metal container of FIG. 図１の金属容器の他の変形例の構成を示す拡大縦断面図である。It is an enlarged longitudinal cross-sectional view which shows the structure of the other modification of the metal container of FIG.

以下に、本発明の一実施形態に係る蓋体付金属容器について図１〜図３を参照して説明する。   Below, the metal container with a lid concerning one embodiment of the present invention is explained with reference to FIGS.

図１は、本発明の一実施形態に係る蓋体付金属容器の正面図である。図２は、図１の蓋体付金属容器の蓋体近傍を説明する図であり、蓋体および胴部の上端を断面図で示している。図３は、図１の蓋体付金属容器の口金部近傍を拡大した縦断面図である。図３の左下円内では、係止溝近傍を拡大して示している。縦断面図とは、上下方向（図１の軸線Ｌ方向）に沿う断面図のことをいう。径方向とは、胴部の径方向（図１の軸線Ｌと直交する方向）のことをいう。   FIG. 1 is a front view of a metal container with a lid according to an embodiment of the present invention. FIG. 2 is a view for explaining the vicinity of the lid of the metal container with lid of FIG. 1, and shows the upper end of the lid and the trunk in a sectional view. FIG. 3 is an enlarged longitudinal sectional view of the vicinity of the cap portion of the metal container with lid of FIG. In the lower left circle of FIG. 3, the vicinity of the locking groove is shown enlarged. A longitudinal cross-sectional view means a cross-sectional view along the vertical direction (the direction of the axis L in FIG. 1). The radial direction refers to the radial direction of the trunk (a direction perpendicular to the axis L in FIG. 1).

図１に示すように、本実施形態の蓋体付金属容器１は、例えば、清涼飲料水やビールなどの液体飲料を収容する飲料用容器であって、金属容器１０と、蓋体３０と、を有している。   As shown in FIG. 1, the metal container 1 with a lid of the present embodiment is a beverage container that contains a liquid beverage such as a soft drink or beer, and includes a metal container 10, a lid 30, have.

金属容器１０は、例えば、アルミニウムやアルミニウム合金等の金属を材料として軸線Ｌに沿って延びる有底筒状に形成されており、胴部１１と、カール部１７（図２）とを一体に有している。   The metal container 10 is formed in a bottomed cylindrical shape that extends along the axis L using, for example, a metal such as aluminum or an aluminum alloy, and integrally includes a body portion 11 and a curled portion 17 (FIG. 2). doing.

胴部１１は、底部１２と、底部１２の周縁から一定の径のまま軸線Ｌ方向上方に延びる腹部１３と、腹部１３の上端に連なり軸線Ｌ方向上方側に向かうにしたがい漸次縮径する肩部１４と、この肩部１４の上端に連なり、軸線Ｌ方向上方側に向かうにしたがい肩部１４より緩く漸次縮径する円筒状の首部１５と、首部１５の上端に連なる円筒状の内壁部１６（図２）と、を有している。内壁部１６の上端は開口している。   The body 11 includes a bottom 12, an abdomen 13 that extends upward in the axis L direction with a constant diameter from the periphery of the bottom 12, and a shoulder that continues to the upper end of the abdomen 13 and gradually shrinks in diameter toward the upper side in the axis L direction. 14, a cylindrical neck portion 15 that is connected to the upper end of the shoulder portion 14 and gradually decreases in diameter gradually from the shoulder portion 14 toward the upper side in the axis L direction, and a cylindrical inner wall portion 16 (continuous to the upper end of the neck portion 15). 2). The upper end of the inner wall portion 16 is open.

図２に示すように、内壁部１６は、首部１５寄りの箇所に全周にわたって径方向内方に向けて凹んだ係止溝１６ａ１が設けられた溝部分１６ａと、溝部分１６ａの上端に連なり、上方側に向かうにしたがい漸次縮径する円筒状に形成されたテーパー部１６ｂとを有している。溝部分１６ａは、縦断面形状が円弧状となるように形成されており、係止溝１６ａ１内は凹面となるように形成されている。   As shown in FIG. 2, the inner wall portion 16 is connected to a groove portion 16 a provided with a locking groove 16 a 1 that is recessed radially inward over the entire circumference at a location near the neck portion 15, and an upper end of the groove portion 16 a. And a tapered portion 16b formed in a cylindrical shape that gradually decreases in diameter as it goes upward. The groove portion 16a is formed so that the longitudinal cross-sectional shape is an arc shape, and the inside of the locking groove 16a1 is formed to be a concave surface.

図３に示すように、カール部１７は、元々は胴部１１の上端部分（内壁部１６の上端に連接された部分）であった箇所が、径方向外方に向けて全体的に丸く巻くように折り返されることによって、胴部１１から径方向外方に膨出するように形成されている。カール部１７は、内壁部１６の上端（胴部１１の一端）に連接され、胴部１１と間隔をあけて配置された側壁部分１８と、側壁部分１８の先端１８ａに連接された先端部分１９と、を有している。   As shown in FIG. 3, the curled portion 17 is entirely rounded at a portion that was originally the upper end portion of the trunk portion 11 (portion connected to the upper end of the inner wall portion 16) outward in the radial direction. By being folded back in this manner, it is formed so as to bulge radially outward from the body portion 11. The curled part 17 is connected to the upper end of the inner wall part 16 (one end of the body part 11), the side wall part 18 disposed at a distance from the body part 11, and the front end part 19 connected to the front end 18a of the side wall part 18. And have.

カール部１７の先端部分１９は、縦断面略Ｕ字状に折り曲げられるとともに、その先端面１９ａを内側に巻き込んで当該先端面１９ａが径方向外方を向いて側壁部分１８の内面１８ｂに当接しかつ折り曲げ箇所１９ｂが径方向内方を向くように折り返されている。折り曲げ箇所１９ｂの外面は凸の曲面状に形成されており、つまり、凸の曲面部分１９ｃとなる。   The front end portion 19 of the curled portion 17 is bent into a substantially U-shaped longitudinal section, and the front end surface 19a is wound inward so that the front end surface 19a faces radially outward and contacts the inner surface 18b of the side wall portion 18. In addition, the folded portion 19b is folded back so as to face inward in the radial direction. The outer surface of the bent portion 19b is formed into a convex curved surface, that is, a convex curved surface portion 19c.

カール部１７は、先端部分１９の折り曲げ箇所１９ｂが係止溝１６ａ１内に収容されており、凸の曲面部分１９ｃが係止溝１６ａ１内の凹面（すなわち、胴部１１の外周面）に当接している。これにより、凸の曲面部分１９ｃが設けられた箇所である先端部分１９は、係止溝１６ａ１に係止されて移動が規制される。   The curled portion 17 has the bent portion 19b of the distal end portion 19 accommodated in the locking groove 16a1, and the convex curved surface portion 19c contacts the concave surface in the locking groove 16a1 (that is, the outer peripheral surface of the body portion 11). ing. As a result, the tip end portion 19 which is a portion where the convex curved surface portion 19c is provided is locked in the locking groove 16a1 and the movement is restricted.

本実施形態において、縦断面において、係止溝１６ａ１内の凹面の曲率半径Ｒ１（図３の一点鎖線）が、カール部１７の凸の曲面部分１９ｃの曲率半径Ｒ２（図３の二点鎖線）より大きくされている。曲率半径Ｒ１と曲率半径Ｒ２とを等しくすることがより好ましい。   In the present embodiment, in the longitudinal section, the curvature radius R1 of the concave surface in the locking groove 16a1 (the one-dot chain line in FIG. 3) is the curvature radius R2 (the two-dot chain line in FIG. 3) of the convex curved surface portion 19c of the curled portion 17. Has been bigger. More preferably, the radius of curvature R1 and the radius of curvature R2 are equal.

また、カール部１７は、側壁部分１８の先端１８ａに連接された先端部分１９が縦断面略Ｕ字状に折り曲げられかつ先端面１９ａが側壁部分１８の内面１８ｂに当接されていることから、先端部分１９によって、側壁部分１８の先端１８ａおよび内面１８ｂの二箇所が支持されている。換言すると、先端部分１９は、側壁部分１８の先端１８ａおよび内面１８ｂを支持する、径方向に延在する２つの支持部分１９ｄ、１９ｅを有しており、これらにより、側壁部分１８に加わる径方向内方に向かう荷重を分散して支える。   Further, the curled portion 17 has a distal end portion 19 connected to the distal end 18a of the side wall portion 18 bent in a substantially U-shaped longitudinal section, and the distal end surface 19a is in contact with the inner surface 18b of the side wall portion 18. The tip portion 19 supports two locations, the tip 18 a and the inner surface 18 b of the side wall portion 18. In other words, the tip portion 19 has two radially extending support portions 19 d and 19 e that support the tip 18 a and the inner surface 18 b of the side wall portion 18, and thereby the radial direction applied to the side wall portion 18. Disperses and supports inward loads.

胴部１１の上端に設けられた内壁部１６とカール部１７とで、全体的に略中空ドーナツ形状（トーラス体状）となる口金部２０を構成している。   The inner wall part 16 and the curl part 17 provided at the upper end of the body part 11 constitute a base part 20 having a generally hollow donut shape (torus body shape) as a whole.

蓋体３０は、キャップ部３１と、シール材３２と、プルタブ部３３とを有している。キャップ部３１は、例えば、アルミニウムやアルミニウム合金等の金属を材料として、円板状の上壁部３１ａと、上壁部３１ａの周縁から下方に延びる周壁部３１ｂと、を一体に有している。シール材３２は、弾力を有する合成樹脂製の円環状部材であって、上壁部３１ａの下面に重ねて配置されている。プルタブ部３３は、キャップ部３１の周壁部３１ｂの先端に一体に連接されている。   The lid 30 has a cap part 31, a sealing material 32, and a pull tab part 33. For example, the cap portion 31 is made of a metal such as aluminum or aluminum alloy, and integrally includes a disk-shaped upper wall portion 31a and a peripheral wall portion 31b extending downward from the periphery of the upper wall portion 31a. . The sealing material 32 is an annular member made of a synthetic resin having elasticity, and is disposed so as to overlap the lower surface of the upper wall portion 31a. The pull tab portion 33 is integrally connected to the tip of the peripheral wall portion 31 b of the cap portion 31.

蓋体３０は、シール材３２が金属容器１０のカール部１７に密着された状態でキャップ部３１の周壁部３１ｂの先端部が全周にわたってカール部１７に巻き締められることにより、金属容器１０に固定して取り付けられている（被着されている）。蓋体３０は、プルタブ部３３を手前から上方に引き上げることにより、キャップ部３１の周壁部３１ｂおよび上壁部３１ａが裂けて、金属容器１０から取り外すことができる。   The lid 30 is attached to the metal container 10 by the tip of the peripheral wall 31b of the cap 31 being wound around the curl 17 over the entire circumference in a state where the sealing material 32 is in close contact with the curl 17 of the metal container 10. It is fixedly attached (attached). The lid 30 can be detached from the metal container 10 by pulling the pull tab portion 33 upward from the front to tear the peripheral wall portion 31 b and the upper wall portion 31 a of the cap portion 31.

次に、上述した金属容器１０の製造方法について説明する。   Next, the manufacturing method of the metal container 10 mentioned above is demonstrated.

はじめに、上端が開口した有底筒状で軸線Ｌ方向全体にわたって一定の径に形成された金属容器体に対し、下部をそのまま残して腹部１３とし、上部に絞り加工を施して肩部１４、首部１５および内壁部１６を順次形成する（胴部形成工程Ｓ１）。   First, with respect to a metal container body having a bottomed cylindrical shape with an open upper end and a constant diameter over the entire direction of the axis L, the lower part is left as it is as an abdomen 13, and the upper part is subjected to a drawing process to form a shoulder part 14 and a neck part. 15 and the inner wall 16 are sequentially formed (body forming step S1).

次に、内壁部１６の上端に連接された部分に対して当該部分の先端（胴部１１の上端）を径方向外方に向けて全体的に丸く巻くように折り返してカール部１７を形成する（カール部形成工程Ｓ２）。このとき、カール部１７の先端部分１９を、縦断面略Ｕ字状に折り曲げるとともに、その先端面１９ａを内側に巻き込んで当該先端面１９ａが径方向外方を向いて側壁部分１８の内面１８ｂに当接しかつ折り曲げ箇所１９ｂが径方向内方を向くように折り返す。   Next, the curled portion 17 is formed by folding the portion connected to the upper end of the inner wall portion 16 so that the front end of the portion (the upper end of the body portion 11) is wound in a generally round shape outwardly in the radial direction. (Curl part formation process S2). At this time, the front end portion 19 of the curled portion 17 is bent into a substantially U-shaped longitudinal section, and the front end surface 19a is wound inward so that the front end surface 19a faces radially outward to the inner surface 18b of the side wall portion 18. It folds so that it abuts and the bent part 19b faces radially inward.

次に、カール部１７を径方向内方に向けて押圧する（圧縮工程Ｓ３）。これにより、カール部１７の凸の曲面部分１９ｃが係止溝１６ａ１内の凹面に当接して、口金部２０が形成される。こうして、本実施形態である金属容器１０が製造される。   Next, the curled portion 17 is pressed inward in the radial direction (compression step S3). Thereby, the convex curved surface portion 19c of the curled portion 17 comes into contact with the concave surface in the locking groove 16a1, and the base portion 20 is formed. Thus, the metal container 10 according to the present embodiment is manufactured.

このように構成された金属容器１０は、内部に飲料などの内容物が充填された後に、その開口を塞ぐように巻き締め加工前の蓋体３０が口金部２０に被せられ、キャッピング装置によって蓋体３０の周壁部３１ｂの先端部がカール部１７に巻き締められて蓋体３０が被着される。このとき、シール材３２がカール部１７に密着するように、カール部１７には軸線Ｌ方向および径方向内方への荷重が加わるが、カール部１７の先端部分１９が係止溝１６ａ１に係止されて移動が規制され、かつ、先端部分１９によって径方向内方に向かう荷重を支えて、カール部１７の変形を抑制できる。   After the metal container 10 configured in this manner is filled with contents such as beverages, the lid body 30 before being tightened is placed on the base portion 20 so as to close the opening, and the capping device covers the lid. The front end portion of the peripheral wall portion 31b of the body 30 is wound around the curled portion 17 and the lid body 30 is attached. At this time, a load is applied to the curled portion 17 in the direction of the axis L and radially inward so that the sealing material 32 is in close contact with the curled portion 17, but the tip portion 19 of the curled portion 17 is engaged with the locking groove 16a1. The movement of the curled portion 17 can be suppressed by stopping the movement and supporting the load directed radially inward by the tip portion 19.

以上説明したように、本実施形態の蓋体付金属容器１によれば、胴部１１の一端が径方向外方に向けて折り返されたカール部１７を有し、当該カール部１７の先端部分１９に設けられた凸の曲面部分１９ｃが胴部１１の外周面（具体的には、係止溝１６ａ１内の凹面）に当接している。このようにしたことから、カール部１７の先端の角部などの鋭角な箇所が胴部１１の外周面に突き当たることがなく、角部のない滑らかな凸の曲面部分１９ｃが胴部１１の外周面に当接していることにより、カール部１７に荷重がかかった際に胴部１１が傷ついてしまうことを効果的に抑制できる。   As described above, according to the metal container 1 with a lid according to the present embodiment, one end of the body portion 11 has the curled portion 17 that is folded back outward in the radial direction, and the distal end portion of the curled portion 17. A convex curved surface portion 19c provided at 19 is in contact with the outer peripheral surface of the trunk portion 11 (specifically, a concave surface in the locking groove 16a1). As a result, sharp corners such as the corners of the tip of the curled portion 17 do not hit the outer peripheral surface of the trunk portion 11, and the smooth convex curved surface portion 19 c without corner portions is the outer periphery of the barrel portion 11. By being in contact with the surface, it is possible to effectively suppress the body portion 11 from being damaged when a load is applied to the curled portion 17.

また、胴部１１の外周面に、全周にわたって径方向内方に向けて凹んだ係止溝１６ａ１が設けられ、カール部１７の凸の曲面部分１９ｃが、係止溝１６ａ１内の凹面に当接している。このようにすることで、凸の曲面部分１９ｃが設けられたカール部１７の先端部分１９が係止溝１６ａ１に係止されて、カール部１７の先端部分１９の移動が規制されるので、カール部１７に荷重がかかった際の変形を抑制することができる。   In addition, a locking groove 16a1 that is recessed radially inward over the entire circumference is provided on the outer peripheral surface of the body portion 11, and the convex curved surface portion 19c of the curled portion 17 contacts the concave surface in the locking groove 16a1. It touches. By doing so, the tip portion 19 of the curled portion 17 provided with the convex curved surface portion 19c is locked in the locking groove 16a1, and the movement of the tip portion 19 of the curled portion 17 is restricted. Deformation when a load is applied to the portion 17 can be suppressed.

また、係止溝１６ａ１内の凹面の曲率半径Ｒ１が、カール部１７の凸の曲面部分１９ｃの曲率半径Ｒ２より大きい。このようにすることで、係止溝１６ａ１内の凹面とカール部１７の凸の曲面部分１９ｃとの接触面積をより大きくすることができ、カール部に荷重がかかった際に胴部が傷ついてしまうことをより効果的に抑制できる。なお、係止溝１６ａ１内の凹面の曲率半径Ｒ１を、カール部１７の凸の曲面部分１９ｃの曲率半径Ｒ１と等しくすることで、カール部に荷重がかかった際に胴部が傷ついてしまうことをより一層効果的に抑制できる。   Further, the curvature radius R1 of the concave surface in the locking groove 16a1 is larger than the curvature radius R2 of the convex curved surface portion 19c of the curled portion 17. By doing so, the contact area between the concave surface in the locking groove 16a1 and the convex curved surface portion 19c of the curled portion 17 can be increased, and the trunk portion is damaged when a load is applied to the curled portion. Can be more effectively suppressed. In addition, by making the curvature radius R1 of the concave surface in the locking groove 16a1 equal to the curvature radius R1 of the convex curved surface portion 19c of the curled portion 17, the trunk portion is damaged when a load is applied to the curled portion. Can be more effectively suppressed.

本実施形態の蓋体付金属容器１によれば、カール部１７による胴部１１の損傷を効果的に抑制できる。   According to the metal container 1 with a lid of the present embodiment, it is possible to effectively suppress damage to the trunk portion 11 due to the curled portion 17.

上述した実施形態では、縦断面略Ｕ字状の先端部分１９が設けられたカール部１７を有する構成であったが、これに限定されるものではない。例えば、図４に示す変形例のように、上記先端部分１９に代えて縦断面略Ｊ字状の先端部分１９Ａが設けられたカール部１７Ａを有する構成を採用してもよい。   In the above-described embodiment, the configuration has the curled portion 17 provided with the tip portion 19 having a substantially U-shaped longitudinal section, but is not limited thereto. For example, as in the modification shown in FIG. 4, a configuration having a curled portion 17A provided with a tip portion 19A having a substantially J-shaped longitudinal section instead of the tip portion 19 may be adopted.

カール部１７Ａの先端部分１９Ａは、縦断面略Ｊ字状に折り曲げられるとともに、その先端面１９ａを内側に巻き込んで当該先端面１９ａが上方を向きかつ折り曲げ箇所１９ｂが径方向内方を向くように折り返されている。折り曲げ箇所１９ｂの外面は凸の曲面状に形成されており、つまり、凸の曲面部分１９ｃとなる。   The front end portion 19A of the curled portion 17A is bent into a substantially J-shaped longitudinal section, and the front end surface 19a is wound inward so that the front end surface 19a faces upward and the bent portion 19b faces radially inward. Wrapped. The outer surface of the bent portion 19b is formed into a convex curved surface, that is, a convex curved surface portion 19c.

カール部１７Ａは、先端部分１９Ａの折り曲げ箇所１９ｂが係止溝１６ａ１内に収容されており、凸の曲面部分１９ｃが係止溝１６ａ１内の凹面（すなわち、胴部１１の外周面）に当接している。これにより、凸の曲面部分１９ｃが設けられた箇所である先端部分１９Ａは、係止溝１６ａ１に係止されて移動が規制される。   In the curled portion 17A, the bent portion 19b of the distal end portion 19A is accommodated in the locking groove 16a1, and the convex curved surface portion 19c contacts the concave surface in the locking groove 16a1 (that is, the outer peripheral surface of the body portion 11). ing. As a result, the tip end portion 19A, which is a location where the convex curved surface portion 19c is provided, is locked by the locking groove 16a1 and the movement is restricted.

この構成においても、上述した実施形態と同様の作用効果を奏し、カール部１７Ａによる胴部１１の損傷を効果的に抑制できる。   Also in this structure, there exists an effect similar to embodiment mentioned above, and the damage of the trunk | drum 11 by the curl part 17A can be suppressed effectively.

また、上述した実施形態では、係止溝１６ａ１が設けられた内壁部１６を有する構成であったが、これに限定されるものではない。例えば、図５に示す変形例のように、係止溝１６ａ１およびテーパー部１６ｂが設けられた内壁部１６に代えて、係止溝１６ａ１が省略されてテーパー部１６ｂのみ設けられた内壁部１６Ａを有する構成を採用してもよい。   Moreover, although it was the structure which has the inner wall part 16 in which the latching groove | channel 16a1 was provided in embodiment mentioned above, it is not limited to this. For example, instead of the inner wall portion 16 provided with the locking groove 16a1 and the tapered portion 16b as in the modification shown in FIG. 5, an inner wall portion 16A provided with only the tapered portion 16b without the locking groove 16a1 is provided. You may employ | adopt the structure which has.

この構成においても、カール部１７の先端の角部などの鋭角な箇所が内壁部１６Ａ（すなわち胴部１１）の外周面に突き当たることがなく、角部のない滑らかな凸の曲面部分１９ｃが胴部１１の外周面に当接していることにより、カール部１７に荷重がかかった際に胴部１１が傷ついてしまうことを効果的に抑制できる。   Even in this configuration, sharp corners such as the corners of the tip of the curled portion 17 do not hit the outer peripheral surface of the inner wall portion 16A (that is, the trunk portion 11), and the smooth convex curved surface portion 19c having no corner portions is formed. By contacting the outer peripheral surface of the portion 11, it is possible to effectively suppress the body portion 11 from being damaged when a load is applied to the curled portion 17.

また、上述した実施形態の蓋体付金属容器１は、金属容器１０の口金部２０に蓋体３０が被着される構成であったが、これに限定されるものではなく、例えば、金属容器の口金部に着脱可能なキャップが螺着されたボトル缶などに、本発明を適用してもよい。   Moreover, although the metal container 1 with a lid of embodiment mentioned above was the structure by which the cover 30 was attached to the nozzle | cap | die part 20 of the metal container 10, it is not limited to this, For example, a metal container The present invention may be applied to a bottle can in which a cap that can be attached to and detached from the base part is screwed.

上記に本発明の実施形態を説明したが、本発明はこれらの例に限定されるものではない。前述の実施形態に対して、当業者が適宜、構成要素の追加、削除、設計変更を行ったものや、実施形態の特徴を適宜組み合わせたものも、本発明の要旨を備えている限り、本発明の範囲に含まれる。   Although the embodiments of the present invention have been described above, the present invention is not limited to these examples. As long as the gist of the present invention is included in the above-described embodiments, those in which those skilled in the art appropriately added, deleted, and changed the design of the above-described embodiments, and combinations of the features of the embodiments as appropriate. It is included in the scope of the invention.

１…蓋体付金属容器、１０…金属容器、１１…胴部、１２…底部、１３…腹部、１４…肩部、１５…首部、１６、１６Ａ…内壁部、１６ａ…溝部分、１６ａ１…係止溝、１６ｂ…テーパー部、１７、１７Ａ…カール部、１８…側壁部分、１８ａ…先端、１８ｂ…内面、１９、１９Ａ…先端部分、１９ａ…先端面、１９ｂ…折り曲げ箇所、１９ｃ…凸の曲面部分、１９ｄ、１９ｅ…支持部分、２０…口金部、３０…蓋体、３１…キャップ部、３１ａ…上壁部、３１ｂ…周壁部、３２…シール材、３３…プルタブ部、Ｌ…軸線、Ｒ１…係止溝の凹面の曲率半径、Ｒ２…カール部の凸の曲面部分の曲率半径、Ｓ１…胴部形成工程、Ｓ２…カール部形成工程、Ｓ３…圧縮工程。 DESCRIPTION OF SYMBOLS 1 ... Metal container with a lid, 10 ... Metal container, 11 ... Body part, 12 ... Bottom part, 13 ... Abdominal part, 14 ... Shoulder part, 15 ... Neck part, 16, 16A ... Inner wall part, 16a ... Groove part, 16a1 ... Engagement Stop groove, 16b ... tapered portion, 17, 17A ... curled portion, 18 ... side wall portion, 18a ... tip, 18b ... inner surface, 19, 19A ... tip portion, 19a ... tip surface, 19b ... folded portion, 19c ... convex curved surface Part, 19d, 19e ... support part, 20 ... base part, 30 ... lid, 31 ... cap part, 31a ... upper wall part, 31b ... peripheral wall part, 32 ... sealing material, 33 ... pull tab part, L ... axis, R1 ... the radius of curvature of the concave surface of the locking groove, R2 ... the radius of curvature of the convex curved surface portion of the curled portion, S1 ... body forming step, S2 ... curl portion forming step, S3 ... compression step.

Claims (4)

一端が開口した有底筒状の胴部を有する金属容器であって、
前記胴部の一端に連接されかつ径方向外方に向けて膨出するように形成されたカール部を有し、
前記カール部の凸の曲面部分が、前記胴部の外周面に当接していることを特徴とする金属容器。 A metal container having a cylindrical body with a bottom that is open at one end,
A curl portion connected to one end of the body portion and formed to bulge outward in the radial direction;
A metal container, wherein a convex curved surface portion of the curled portion is in contact with an outer peripheral surface of the body portion. 前記胴部の外周面に、全周にわたって径方向内方に向けて凹んだ係止溝が設けられ、
前記カール部の凸の曲面部分が、前記係止溝内の凹面に当接していることを特徴とする請求項１に記載の金属容器。 The outer peripheral surface of the trunk is provided with a locking groove that is recessed radially inward over the entire circumference,
2. The metal container according to claim 1, wherein a convex curved surface portion of the curled portion is in contact with a concave surface in the locking groove. 前記係止溝内の凹面の曲率半径が、前記カール部の凸の曲面部分の曲率半径以上であることを特徴とする請求項２に記載の金属容器。   The metal container according to claim 2, wherein a radius of curvature of the concave surface in the locking groove is equal to or larger than a radius of curvature of the convex curved surface portion of the curled portion. 請求項１〜請求項３のいずれか一項に記載の金属容器と、
液体が収容された前記金属容器の開口を塞ぐように取り付けられた蓋体と、を有することを特徴とする蓋体付金属容器。 The metal container according to any one of claims 1 to 3,
And a lid attached so as to close an opening of the metal container in which the liquid is accommodated.
JP2016195670A 2016-10-03 2016-10-03 Metal container and metal container with lid body Pending JP2019206343A (en)

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US2384810A (en) * 1940-05-13 1945-09-18 Crown Cork & Seal Co Container
JPS5575833A (en) * 1978-11-30 1980-06-07 Takeuchi Press Kogyo Kk Production of can having curlings
JPS6245211U (en) * 1985-09-06 1987-03-19
JPH0572713U (en) * 1992-03-10 1993-10-05 丸忠産業株式会社 Container
JP4721245B2 (en) * 2001-01-25 2011-07-13 大和製罐株式会社 Curling part coating method for steel bottle type cans
JP4293349B2 (en) * 2002-09-12 2009-07-08 大和製罐株式会社 Method for forming opening curl of metal can
JP4692144B2 (en) * 2005-08-12 2011-06-01 Ｊｆｅスチール株式会社 Two-piece can and manufacturing method thereof, and steel plate for two-piece can
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EP2347838B1 (en) * 2010-01-14 2013-03-27 Ardagh MP Group Netherlands B.V. A method and apparatus for making a can with a curled end, such can and can body

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