JP2005298005A - Plastic cap and container with the cap - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a plastic cap capable of keeping a state to be surely put on a container when the container is in use and easily separating from the container for disposal of the container, and a container with the cap. <P>SOLUTION: The cap includes a cap body 10 to be fitted over a mouth of a metallic container body 10 and an upper lid 40 to be coupled with the cap body 10 via a hinge 25 so that it can be opened/closed. A groove 24 to be fitted with the mouth of the container body 10 is formed inside an outer peripheral wall 21 of the cap body 20. A slit 26 is formed between an outer sidewall 22 of the groove 24 and a predetermined region of the outer peripheral wall 21. Thin parts 21a and 21b having an end of the hinge 25 joined and extending longitudinally respectively on both sides across the hinge 25 are formed in the predetermined region of the outer peripheral wall 21. A lower end of a hinge joint 21c between the thin-walled parts 21a and 21b on the outer peripheral wall 21 and an end rim of the outer sidewall 22 of the groove 24 are coupled. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a plastic cap and a container equipped with the cap, and more particularly to a plastic cap separable from the container and a container equipped with the cap.

  In recent years, plastic caps attached to metal bottles, glass bottles, etc. have been securely attached to the bottles when used from the viewpoint of resource recycling, etc. There is a need for easy separation. Conventionally, a plastic cap separable from such a bottle has been proposed (see, for example, Patent Document 1).

In this conventional plastic cap (hereinafter simply referred to as a cap), a convex portion that engages with a step portion formed around the mouth portion of a bottle to be mounted is formed on the inner wall surface. Due to the engagement between the step portion formed at the mouth portion of the bottle and the convex portion formed at the inner wall surface of the cap, the cap is securely attached without being pulled out from the mouth portion of the bottle. In such a cap, two cut lines (cut processing) extending upward from the lower end portion of the cap are formed, and by pushing up a portion sandwiched between the cut lines with a finger, the portion is drawn up. ing. By rolling up the portion sandwiched between the cut lines, the engagement between the cap and the mouth of the bottle is partially lost, and the cap can be removed from the mouth of the bottle with a bare hand (finger) without using tools. It becomes possible to separate.
JP 2000-72166 A

  By the way, in the conventional cap as described above, the portion sandwiched between the two cut lines becomes a part of the cap without being rolled up when the bottle is used, and the engagement state between the cap and the mouth of the bottle Must be maintained reliably. For this reason, the portion sandwiched between the two cut lines must have a certain degree of strength as a part of the cap. However, if the portion surrounded by the two cut lines is given a certain level of strength as a part of the cap in this way, it becomes difficult to scoop up the portion without protrusions with bare hands when the bottle is discarded.

  The present invention has been made to solve such a conventional problem, and maintains the state of being securely attached to the container and the confidentiality when the container is used, and can be easily separated from the container when the container is discarded. A plastic cap and a container equipped with the cap are provided.

  A plastic cap according to the present invention is a plastic provided with a cap body that fits into a mouth portion of a metal container body, and an upper lid that is coupled to the cap body via a hinge part and can be opened and closed by the hinge part. A groove portion is formed in the outer peripheral wall of the cap main body, the groove portion being fitted to the mouth portion of the metal container main body, and a slit between the outer wall of the groove portion and a predetermined region portion of the outer peripheral wall. One end of the hinge portion is coupled to the predetermined region portion of the outer peripheral wall, and thin portions extending in the vertical direction are formed on both sides sandwiching the hinge portion. The lower end part of the hinge joint part between each thin part and the edge part of the outer wall of the said groove part are connected.

  The container according to the present invention is a container comprising a metal container main body and a plastic cap attached to the metal container main body, wherein the plastic cap is a mouth portion of the metal container main body. A cap main body fitted to the cap main body via a hinge portion, and an upper lid that can be opened and closed by the hinge portion, and the mouth portion of the metal container main body is provided inside the outer peripheral wall of the cap main body. And a slit is formed between an outer wall of the groove and a predetermined region portion of the outer peripheral wall, and one end of the hinge portion is joined to the predetermined region portion of the outer peripheral wall. In addition, thin portions extending in the vertical direction are formed on both sides sandwiching the hinge portion, and a lower end portion of the hinge connecting portion between the thin portions of the outer peripheral wall and an edge portion of the outer wall of the groove portion are formed. With linked structure That.

  With such a configuration, when the upper lid coupled to the cap body via the hinge portion is pulled down with the groove portion of the cap body fitted to the mouth portion of the metal container body, the cap body is interposed via the hinge portion. A pulling-down force acts on a predetermined region portion of the outer peripheral wall. When the thin wall portions formed on both sides of the hinge portion in the predetermined region portion of the outer peripheral wall are torn by this pulling force, the hinge joint portion between the torn thin portions is separated from the outer peripheral wall and The lower end portion is connected to the end edge portion of the outer wall of the groove portion. When the upper lid is lifted in this state, a pulling force acts on the edge of the outer wall of the groove portion of the cap body via the hinge portion and the hinge joint portion. When the edge of the outer wall of the groove portion of the cap body is pulled up by this pulling force, the fitting force between the groove portion and the mouth portion of the metal container body is weakened, and the cap body is separated from the mouth portion of the metal container body. Will be able to.

  In the container according to the present invention, an outer curled portion curled outward is formed at the upper end of the mouth of the metal container main body, and the outer wall of the groove portion of the cap main body is located outside the outer curled portion. In addition, the front end of the outer curl portion may be in a state where it is not caught in the outer curl portion.

  With such a configuration, the groove portion of the cap body is fitted to the outer curled portion formed at the upper end of the mouth portion of the metal container body, so that the groove portion and the mouth portion of the metal container body are more securely fitted. Can be made. Further, since the tip of the outer curl portion is not caught in the outer curl portion, the tip of the outer curl portion is easily caught on the outer wall of the groove portion. Therefore, the fitting state between the groove and the mouth of the metal container main body can be more reliably maintained.

  Furthermore, the container which concerns on this invention can be set as the structure by which the area | region of the predetermined width which goes to the inner side of the said mouth part from the said outer curl part was formed in straight shape.

  With such a configuration, since the groove part of the cap body is fitted to the mouth part of the metal container body, the part where the inner wall of the groove part located inside the mouth part is in a straight shape, Adhesion between the inner side wall of the groove and the inner surface of the mouth of the metal container body is improved, and the air tightness of the metal container body to which the plastic cap is attached can be improved.

  Moreover, the container which concerns on this invention can be set as the structure where the said outer winding curl part front-end | tip edge part is hooked on the projection part of the outer side wall of the said groove part.

  With such a configuration, since the tip edge portion of the outer curl portion formed at the mouth portion of the metal container body is hooked on the protruding portion of the outer wall of the groove portion, the groove portion of the cap body and the mouth portion of the metal container body The fitting state is more reliably maintained.

  According to the plastic cap and the container of the present invention, the groove formed inside the outer peripheral wall of the cap body of the plastic cap is fitted to the mouth of the metal container body, and the hinge is attached to the cap body. The fitting force between the groove of the cap main body and the mouth of the metal container main body can be weakened by the lowering and pulling up operation of the upper lid connected through the section, so that the plastic cap can be securely attached to the container when the container is used. The mounted state can be maintained, and the plastic cap can be easily separated from the container when the container is discarded.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  A bottle (container) according to an embodiment of the present invention is configured as shown in FIG. FIG. 1 is a cross-sectional view of a bottle.

  In FIG. 1, a plastic cap 50 is attached to the metal bottle body 10. The plastic cap 50 includes a cap body 20 that fits into a mouth portion of the metal bottle body 10, and an upper lid 40 that is coupled to the cap body 20 via a hinge portion 25 and can be opened and closed by the hinge portion 25. Yes. As shown in FIG. 2, the metal bottle main body 10 has a structure in which an outer winding curl portion 12 is formed at the upper end of the mouth portion 11.

  On the inner side of the outer peripheral wall 21 of the cap body 20, an annular outer wall 22 and an inner wall 23 are provided concentrically so as to extend downward from the peripheral portion of the ceiling portion so that a groove 24 is formed in the peripheral portion of the ceiling portion. Has been. When the groove portion 24 is fitted into the mouth portion 11 of the metal bottle body 10, the outer wall 22 of the groove portion 24 is positioned outside the outer curl portion 12 formed in the mouth portion 11 of the metal bottle body 10. The inner side wall 23 of the groove part 24 will be located inside the mouth part 11 of the metal bottle main body 10.

  The detailed structure of the fitting part of the groove part 24 and the mouth part 11 of the metal bottle main body 10 is shown in FIG. The front end 12a of the outer curl portion 12 formed in the mouth portion 11 of the metal bottle body 10 is not in the outer curl portion 12, and the edge 12a edge of the outer curl portion 12 is present. The portion is easily caught on the protrusion 22 a of the outer wall 22 of the groove 24. Further, a portion 13 having a predetermined width from the outer curled portion 12 toward the inside of the mouth portion 11 is formed in a straight shape. By this straight portion 13, the contact area between the inner surface of the metal bottle body 10 and the inner wall 23 of the groove 24 can be made relatively large, so that the airtightness of the metal bottle body 10 is kept high. Will be able to.

  FIG. 4 is a top view of the cap body 20 and the top cover 40 in a state where the top cover 40 is opened, and FIG. 5 is an enlarged view of the top view of the cap body 20. FIG. 6 is a rear external view of the bottle in a state where the plastic cap 50 is attached to the metal bottle body 10. The structure of the plastic cap 50 will be further described with reference to FIGS. 4, 5 and 6 together with FIG.

  On the outer surface of the ceiling portion of the cap main body 20, an annular upper lid receiving portion 37 and a mouth forming portion 36 are provided concentrically so as to extend upward from the peripheral portion thereof. An annular thin portion (score) 31 is formed on the inner side of the mouth forming portion 35 of the ceiling portion, and a portion surrounded by the thin portion 31 is a cutout portion 30. A pull top ring support portion 34 is formed at one end of the extraction portion 30, and one end of the pull top ring 33 is joined to the pull top ring support portion 34. Further, an upper lid locking portion 28 is formed at a position facing the hinge portion 25 of the cap body 20.

  For example, as shown in FIGS. 4 and 5, a predetermined region portion of the outer peripheral wall 21 of the cap body 20, an approximately half region portion of the outer periphery including a portion to which the hinge portion 25 is joined, and the outer wall 22 of the groove portion 24 described above. A slit 26 is formed between them (see FIGS. 1 and 5). As shown in FIGS. 5 and 6, thin portions 21a and 21b (scores) extending in the vertical direction are formed on both sides of the hinge portion 25 in the predetermined region portion of the outer peripheral wall 21, and the thin portion 21a. The portion of the outer peripheral wall 21 between 21b is a hinge joint 21c where one end of the hinge 25 is joined. Moreover, the lower end part of the hinge junction part 21c and the edge part of the outer peripheral wall 22 of the groove part 24 are connected by the connection part 27 (refer FIG. 1).

  As shown in FIG. 1, the upper lid 40 joined to the cap body 20 having the above-described structure through the hinge portion 25 has an annular mouth shielding portion 43 erected from the ceiling portion inside the outer peripheral wall 41. Yes. With the top lid 40 closed, the outer peripheral surface of the mouth shielding portion 43 is in close contact with the inner peripheral surface of the mouth forming portion 36 of the cap body 20. Further, the upper lid 40 is formed with a stepped portion that fits into the upper lid locking portion 37 of the cap body 20, and a locking projection 42 is formed on the outer peripheral wall 41 on the opposite side of the hinge portion 25. The stepped portion fits into the upper lid locking portion 37 of the cap body 20 and the locking projection 42 fits into the upper lid locking portion 28 of the cap body 20, so that the upper lid 40 is securely closed.

  In the bottle in which the plastic cap 50 having the above-described structure is attached, the ceiling portion of the cap body 20 is torn along the thin portion 31 and pulled out by pulling up the pull top ring 33 with the upper lid 40 opened. The portion 30, the pull top ring 33 and the pull top ring support portion 34 are integrally separated from the cap body 20. As a result, as shown in FIG. 7, a bottle mouth continuing from the mouth forming portion 36 of the cap body 20 to the inside of the metal bottle body 10 is formed.

  When discarding the bottle, as shown in FIG. 7, the upper lid 40 that is in an open state is further lowered downward (see the block arrow). Then, a pulling-down force acts on the hinge joint portion 21c (FIGS. 5 and 6) formed on the outer peripheral wall 21 of the cap body 20 via the hinge portion 25. By this pulling-down force, the thin portions 21a and 21c corresponding to both side lines of the hinge joint portion 21c are torn. Thereby, only the lower end part side of the hinge joining part 21c is connected to the end edge part of the outer wall part 22 of the groove part 24 by the connecting part 27.

  In this state, as shown in FIG. 8, the upper lid 40 is pulled up (see the block arrow). Then, the lifting force acts on the end edge portion of the outer wall portion 22 of the groove portion 24 via the hinge portion 25, the hinge joint portion 21 c and the connecting portion 27. By this pulling force, the end edge portion of the outer wall 22 of the groove portion 24 rises outward, and the width of the groove portion 24 increases. Thereby, the fitting state of the groove part 24 of the cap main body 20 and the outer winding curl part 12 formed in the mouth part of the metal bottle main body 10 can be easily released, and the cap main body 20, that is, the plastic cap 50 can be easily separated from the metal bottle main body 10.

  According to the bottle according to the embodiment of the present invention as described above, the cap body 20 is made of metal by fitting the groove portion 24 and the outer curl portion 12 formed in the mouth portion of the metal bottle body 10. A reliable fitting state to the mouth of the bottle body 10 can be maintained. Further, since the tip 12a of the outer curl portion 12 of the metal bottle body 10 is not caught in the outer curl portion 12, the edge portion of the tip 12a is easily caught on the outer wall portion 22 of the groove portion 24. A fitting state can be maintained with further certainty. Moreover, since the outer surface of the inner wall part 23 of the groove part 24 adheres to the site | part (refer FIG. 3) formed in straight shape inside the metal bottle main body 10, the airtightness at the time of bottle use can be maintained highly.

  When the bottle is discarded, the portion of the outer wall portion 22 of the groove portion 24 facing the hinge joint portion 21c can be lifted up by reliably holding the upper lid 40 and lowering and raising (see FIGS. 7 and 8). The plastic cap 50 can be easily separated from the metal bottle main body 10.

  The plastic cap and container according to the present invention can maintain a reliable mounting state and airtightness of the plastic cap when the container is used, and can easily separate the plastic cap from the container when the container is discarded. It is useful as a plastic cap separable from the container and a container equipped with the cap.

It is sectional drawing which shows the bottle with which the plastic caps concerning one Embodiment of this invention were mounted | worn. It is a figure which shows a metal bottle main body. It is a figure which shows the detailed structure of the fitting site | part of the groove part of a cap main body, and the opening part of a metal bottle main body. It is a figure which shows the upper surface external appearance of the cap main body in the state which open | released the upper cover, and the upper cover. It is an enlarged view of the upper surface appearance of a cap body. FIG. 2 is a rear external view of a bottle in a state where a plastic cap 50 is attached to the metal bottle main body 10. It is sectional drawing which shows the procedure (the 1) which isolate | separates the plastic cap shown in FIG. 1 from a metal bottle main body. It is sectional drawing which shows the procedure (the 2) which isolate | separates the plastic cap shown in FIG. 1 from a metal bottle main body.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Metal bottle main body 11 Mouth part 12 Outer curl part 20 Cap main body 21 Outer peripheral wall 21a, 21b Thin part (score)
21c Hinge joint part 22 Outer side wall 23 Inner side wall 24 Groove part 25 Hinge part 26 Slit 27 Connection part 28 Upper lid latching part 30 Extraction part 31 Thin part (score)
33 Pull-top ring 34 Pull-top support part 40 Upper lid 41 Outer peripheral wall 42 Locking protrusion 43 Closure part 50 Plastic cap

Claims (5)

A cap made of plastic with a cap body that fits into a mouth of a metal container body, and an upper lid that is coupled to the cap body via a hinge part and can be opened and closed by the hinge part;
Inside the outer peripheral wall of the cap body, a groove is formed that fits with the mouth of the metal container body, and a slit is formed between the outer wall of the groove and a predetermined region portion of the outer peripheral wall,
One end of the hinge portion is joined to the predetermined region portion of the outer peripheral wall, and thin portions extending in the vertical direction are formed on both sides sandwiching the hinge portion,
A plastic cap characterized by having a structure in which a lower end portion of a hinge joint portion between the thin wall portions of the outer peripheral wall is connected to an end edge portion of an outer wall of the groove portion. A metal container body;
A container having a plastic cap attached to the metal container body,
The plastic cap includes a cap body that fits into a mouth portion of the metal container body, and an upper lid that is coupled to the cap body via a hinge portion and can be opened and closed by the hinge portion.
Inside the outer peripheral wall of the cap body, a groove is formed that fits with the mouth of the metal container body, and a slit is formed between the outer wall of the groove and a predetermined region portion of the outer peripheral wall,
One end of the hinge portion is joined to the predetermined region portion of the outer peripheral wall, and thin portions extending in the vertical direction are formed on both sides sandwiching the hinge portion,
A container having a structure in which a lower end portion of a hinge joint portion between the thin wall portions of the outer peripheral wall is connected to an edge portion of an outer wall of the groove portion. On the upper end of the mouth of the metal container body, an outer curled portion curled outward is formed,
The outer wall of the groove portion of the cap body is located outside the outer curled portion,
The container according to claim 2, wherein a tip of the outer curl portion is in a state of being not caught in the outer curl portion. The container according to claim 2 or 3, wherein a region having a predetermined width from the outer curled portion toward the inside of the mouth portion is formed in a straight shape. The container according to claim 3 or 4, wherein a tip edge portion of the outer curl portion is caught by a protrusion on an outer wall of the groove portion.

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