JP4069264B2 - Container opening and closing device - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a container opening / closing device that is formed and used at the mouth of a container for storing various liquid products, powder products, or the like. More specifically, the present invention relates to a container opening / closing device suitable for collecting a container or a cap as a resource.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in a container opening and closing device using a synthetic resin lid, a container equipped with the lid or the lid itself is collected for resource recycling. In this case, the process is performed as shown in FIG. In the figure, 51 is a container, 52 is a mouth portion, and 53 is a concave groove for engagement. Reference numeral 54 denotes a synthetic resin inner lid, which has a cylindrical portion 55 and a mouth wall 56. Reference numeral 57 denotes an outer lid provided integrally with a hinge 58.
[0003]
The cylindrical portion 55 is formed with a ridge 59 that engages with the recess 53. When the inner lid 54 is attached to the mouth portion 52, the inner lid 54 can be attached by a single blow according to the stopper type. 60 is a thin-walled weakening line formed on the top of the ridge 59 and over the entire circumference of the cylindrical portion 55, and the weakening line 60 is formed upward from the lower end portion 61 of the cylindrical portion 55. It is connected to the weakening unit 62. Reference numeral 63 denotes a knob, and a base end portion 64 thereof is provided in the vicinity of a connection point 65 between the weakening line 60 and the weakening portion 62. When collecting the container 51 of the container opening / closing device configured as described above or the cover body 66 including the inner cover 54 and the outer cover 57, the knob 63 is picked and pulled in the circumferential direction, and the weakening portion 62 and the weakening line are picked up. 60 is torn off, the ridge 59 is cut off from the cylindrical portion 55, the lid 66 is then detached from the mouth portion 52, and the container 51 or the lid 66 is recovered as a resource.
[0004]
[Problems to be solved by the invention]
However, the conventional container opening and closing device has the following disadvantages. That is, the weakening line 60 is formed over the entire circumference of the cylindrical portion 55. Such a structure lowers the tensile strength in the circumferential direction of the cylindrical portion 55, and due to variations in the products of both the inner lid 54 and the mouth portion 52 of the container 51, the mouth portion 52 can have a larger diameter than usual. When 54 is formed to have a smaller diameter than usual, the weakening line 60 may be damaged during the plugging. In addition, forming the weakening line 60 around the entire circumference of the cylindrical portion 55 complicates the structure and makes it difficult to manufacture the mold.
[0005]
The present invention has been made in order to solve the above-described problems, and its object is to prevent the weakening line 60 from being damaged and to have a complicated structure as shown in the conventional example. Instead, it is to provide a container opening and closing device that is relatively simple and therefore easy to manufacture a mold.
[0006]
[Means for Solving the Problems]
The present invention includes a concave portion 3 formed on the outer periphery of the upper end portion of the mouth portion 2 of the container 1; a synthetic portion having a cylindrical portion 5 provided with a convex portion 4 that is attached to the mouth portion 2 and engages with the concave portion 3. An inner lid 8 made of resin; an outer lid 10 provided integrally with the inner lid 8 via a hinge 9; a width direction of the hinge 9 with respect to the center 81 of the inner lid 8 on the inner lid 8 Imaginary lines 82 and 83 formed with diameters perpendicular to the directions of both ends 91 and 92; the cylindrical portion of the portion 12 on the hinge 9 side of the inner lid 8 divided by the imaginary lines 82 and 83 5, a weakened portion 14 formed upward from the lower end portion 13 of the cylindrical portion 5 and crossing the ridge 4; continuous to the weakened portion 14, on the upper side of the ridge 4, and the ridge 4 is a tearable weakening line 15 formed along 4; the weakened portion 14 is cut across the ridge 4 and When the outer lid 10 is pulled upward, a container comprising the hinge 9 formed with a tensile strength greater than the engagement strength of the engagement between the recess 3 and the projection 4 An opening and closing device; the weakening portion 14 extends from a lower end portion 13 of the cylindrical portion 5 to a weakening line 15 of the cylindrical portion, and the weakening line 15 is connected to the virtual line 82 of the inner lid 8; 83, provided on the cylindrical portion 5 of the portion 12 on the hinge 9 side, which is divided by 83. The weakening part 14 of this invention is formed in the position corresponding to the hinge 9 in the circumferential direction of the cylinder part 5.
[0007]
[Action]
The present invention is configured as described above. When the consumer or the like is using it, the fissure 6 is cut and a mouth is formed in the mouth wall 7 so that liquid goods (not shown) in the container 1 are poured out and used. . And when consuming contents commodities etc. and then recovering the inner lid 8 provided with the container 1 or the outer lid 10 as a resource, it is first formed upward from the lower end 13 of the cylindrical portion 5 of the inner lid 8. The weakened part 14 is torn upward from the lower part. Then, the weakened portion 14 crosses the circumferential ridge 4 formed in the cylindrical portion 5 in the vertical direction, and therefore, the ridge 4 is cut in the vertical direction. The engagement strength of the engagement is reduced. Here, when the outer lid 10 is held and pulled upward, the tensile strength of the hinge 9 is greater than the engagement strength of the engagement of the both strips 3 and 4, whose engagement is weakened by the cutting of the weakened portion 14. By being formed, the inner lid 8 can be easily removed from the mouth portion 2 in spite of a simpler structure than that of the conventional structure. Accordingly, the container 1 or the inner lid 8 provided with the outer lid 10 can be easily recovered.
Further , the inner lid 8 is separated from the center 81 of the inner lid 8 by virtual lines 82 and 83 formed by diameters perpendicular to the widthwise end portions 91 and 92 of the hinge 9. of the said tube portion 5 of the hinge 9 side portion 12, directed upward from the lower end 13 of the tubular portion 5, since the weakened portion 14 across the ridge 4 is formed, the weakened portion 14 However, when the outer lid 10 is pulled up across the convex strip 4 and the outer lid 10 is pulled upward, the tensile strength of the hinge 9 is larger than the engagement strength of the engagement of the strips 3 and 4. By being formed, and also, the transverse part of the weakened part 14 across the ridge 4 is formed in the portion 12 on the hinge 9 side divided by the imaginary lines 82 and 83, thereby The pulling force is effectively applied directly to the crossing And, therefore it can be removed easily its engagement. Accordingly, the inner lid 8 can be easily removed from the mouth portion 2 in spite of a simpler structure than that of the conventional structure, and thus the inner lid 8 having the container 1 or the outer lid 10 can be easily removed. Can be recovered. Further, in the configuration as described above, the one having the mouth wall 7 and having the endless fissure 6 in the mouth wall 7 can maintain a sufficient hermeticity until the first opening. In addition, the weakened portion 14 formed at a position corresponding to the hinge 9 in the circumferential direction of the cylindrical portion 5 is extremely easy because the force due to the upward pulling of the hinge 9 reaches directly at a distance. It is possible to disengage the both strips 3 and 4. Moreover, since the weakening part 14 is connected to the weakening line 15 formed along the convex line 4 on the upper side of the convex line 4, the weakening line 15 can also be torn. Since the engagement is further weakened in addition to the cutting of the ridges 4, the engagement between both the ridges 3 and 4 can be more easily released.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
1 to 3 are diagrams showing a reference example, FIG. 1 is a cross-sectional view of a container opening and closing device, FIG. 2 is a plan view of an inner lid of the container opening and closing device with an outer lid opened, and FIG. FIG. 4, FIG. 5, FIG. 6 are diagrams showing an embodiment of the present invention, and FIG. 4 is a cross-sectional view of the container opening / closing device of the first embodiment. 5 is a rear view of only the inner lid with the outer lid of the apparatus shown in FIG. 4, and FIG. 6 is a partial sectional view showing the second embodiment. In the drawings, the same reference numerals have the same names and functions.
1 and 4 , 1 is a container, and a bottle is shown as an example. In this case, the bottle can be made of glass or synthetic resin. Reference numeral 2 denotes a mouth portion, and an annular recess 3 is formed on the outer periphery of the upper end portion. Reference numeral 8 denotes an inner lid formed of a synthetic resin, for example, polyethylene or polypropylene, and has a cylindrical portion 5 and a mouth wall 7. An endless fissure 6 is formed in the mouth wall 7, and a convex strip 4 is provided on the inner side of the cylindrical portion 5 so as to engage with the concave strip 3. Reference numeral 17 denotes a tearing member provided on the mouth wall 7, 18 denotes a barrel, 19 denotes a hooking member with the outer lid 10 described later, and 20 denotes an inner cylinder. The inner cylinder 20 and the cylinder portion 5 press-clamp the mouth portion 2 from inside and outside. Reference numeral 10 denotes an outer lid, which is provided integrally with the inner lid 8 via a hinge 9. As shown in FIG. 2 , virtual lines 82 and 83 are formed on the inner lid 8 with diameters perpendicular to both ends 91 and 92 in the width direction of the hinge 9 with respect to the center 81 of the inner lid 8. The And in the portion 12 on the hinge 9 side of the inner lid 8 which is divided by the virtual lines 82 and 83, the tubular portion 5 faces upward from the lower end portion 13 of the tubular portion 5, and the ridges are formed. A weakened portion 14 is formed across 4. As an example, the weakened portion 14 includes a notch 21 and a thin portion 22 continuous thereto. The weakened portion 14 may be formed by not only the notch 21 and the thin-walled portion 22 as described above, but also a perforation and a continuous small hole (not shown), or a combination thereof. Any weakened part may be used. The weakened portion 14 is formed so as to cross the ridge 4 in the vertical direction. By tearing the weakened portion 14, the ridge 4 is cut and easily deformed in the circumferential direction, that is, easily extended. ing.
[0009]
Next, the tensile strength of the hinge 9 will be described. The tensile strength of this portion is determined when the weakened portion 14 is torn off and the protrusion 4 is cut off and the engagement with the recess 3 is weakened. When the upper cover 10 is pulled upward, the engagement strength of the engagement between the two strips 3 and 4 is greater than that of the engagement. Next, the position of the weakened portion 14 will be described . In the inner lid 8 shown in FIGS. 1 and 5 , the cylindrical portion 5 is formed at a portion corresponding to the hinge 9, and thereby the weakened portion 14 is torn. When the hinge 9 is cut and pulled upward, the engagement between the strips 3 and 4 is more easily disengaged.
In this case, as shown in FIG. 3, since the outer lid 10 is picked and pulled upward, it is a relatively wide area portion, so that it can be held sufficiently and the lid cylinder portion shown in FIG. Since 23 can be hooked on the finger 24, a sufficiently large force can be applied without scolding.
The weakened portion 14 may be formed in a portion that does not correspond to the hinge 9 in the vertical direction as shown in FIG. In this case, the weakened portion 14 is formed by the cylindrical portion 5 of the portion 12 on the hinge 9 side divided by the virtual lines 82 and 83 shown in FIG. This is because it is easy to disengage the both strips 3 and 4 when pulling upward.
[0010]
Next, in the present embodiment, as shown in FIGS. 5 and 6 , the weakened portion 14 is formed on the convex strip 4 without extending over the entire circumference, and is partially formed in a circumferential weakened line. It is connected to the 15. In this case, it is possible to further easily disengage the both strips 3 and 4 by tearing the weakening portion 14 and then also the weakening line 15. In this case, of course, the weakening line 15 is formed in the cylindrical portion 5 of the portion 12 on the hinge 9 side divided by the virtual lines 82 and 83.
When the outer lid 10 is pulled upward, the thus formed one can apply a circumferential force to the upward force by pulling not only upward but also obliquely upward, that is, by adding a so-called twist. It is possible to make it easier to disengage both the strips 3 and 4.
Note that, in this method, even when the weakening line 15 is connected to the weakening portion 14 as in the present embodiment , or the weakening portion 14 is formed at a position not corresponding to the hinge 9 and connected to the weakening line 15. Even in such a case, as described above, the upper portion can be pulled in the circumferential direction, that is, obliquely upward with a so-called twist, and a moment can be applied to the center. Therefore, it is possible to easily disengage the both strips 3 and 4 from each other.
[0011]
【The invention's effect】
According to the first aspect of the present invention, when the weakened portion 14 is torn across the convex strip 4 and the outer lid 10 is pulled upward by being configured as described above, The tensile strength of the hinge 9 is formed to be greater than the engagement strength of the engagement of the both strips 3 and 4, and the transverse portion of the weakened portion 14 across the convex strip 4 is the imaginary line. By being formed in the portion 12 on the hinge 9 side divided by 82 and 83, the force pulling the hinge 9 upward can add a tangential force to the cylindrical portion 5 to give a so-called twist. Effectively and directly to the crossing and can therefore be easily disengaged.
[0012]
Therefore, the inner lid 8 can be easily removed from the mouth portion 2 in spite of a simpler structure than the conventional structure, and thus the inner lid 8 having the container 1 or the outer lid 10 can be easily removed. Can be recovered.
In the invention according to the second aspect, since the weakening portion 14 is formed at a position corresponding to the hinge 9 in the circumferential direction of the cylindrical portion 5, the force due to the upward pulling of the outer lid 10 is both close to the distance. Since it reaches the engaging portion of the strips 3 and 4 directly, it is possible to easily disengage both the strips 3 and 4 despite the very simple structure. It can be removed from the mouth 2 of the container 1.
[Brief description of the drawings]
FIG. 1 is a sectional view of a container opening and closing device according to a reference example of the present invention.
FIG. 2 is a plan view of the inner lid of the container opening / closing device with the outer lid opened.
FIG. 3 is a diagram for explaining the operation of the apparatus shown in FIG. 1;
Figure 4 shows a first embodiment of the present invention, is a cross-sectional view of the container of the switchgear.
FIG. 5 is a rear view of only the inner lid with an outer lid of the apparatus shown in FIG . 4 ;
FIG. 6 is a partial sectional perspective view of an inner lid with an outer lid of a container opening / closing device according to a second embodiment of the present invention.
FIG. 7 is a partial cross-sectional view of a conventional similar device .
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Container 2 Mouth part 3 Convex line 4 Convex line 5 Cylindrical part 6 Fissure 7 Port wall 8 Inner cover 9 Hinge 10 Outer cover 82, 83 Virtual line 12 Hinge side part 13 Lower end part 14 Weak part 15 Weak line

Claims (2)

A concave 3 formed on the outer periphery of the upper end of the mouth 2 of the container 1; a synthetic resin medium having a cylindrical portion 5 provided with a convex 4 engaged with the concave 3 attached to the mouth 2. A lid 8; an outer lid 10 integrally provided on the inner lid 8 via a hinge 9; both ends 91 in the width direction of the hinge 9 with respect to the center 81 of the inner lid 8 on the inner lid 8 , Imaginary lines 82, 83 formed with a diameter perpendicular to the 92 direction; the cylindrical portion 5 of the portion 12 on the hinge 9 side divided by the imaginary lines 82, 83 of the inner lid 8, A weakened portion 14 formed upward from the lower end portion 13 of the cylindrical portion 5 and crossing the ridge 4; continuous to the weakened portion 14, above the ridge 4 and along the ridge 4. The formed weakening line 15 that can be cut freely; the weakened portion 14 is cut across the ridge 4 and the outer lid 10 is A container opening / closing device comprising the hinge 9 formed with a tensile strength greater than the engagement strength between the recess 3 and the protrusion 4 when pulled up. And
The weakened portion 14 extends from the lower end portion 13 of the tubular portion 5 to the weakened line 15 of the tubular portion,
Opening and closing of the container, characterized in that the weakening line 15 is provided in the cylindrical portion 5 of the portion 12 on the hinge 9 side, which is divided by the virtual lines 82 and 83 of the inner lid 8. apparatus.  The container opening and closing device according to claim 1, wherein the weakening portion is formed at a position corresponding to the hinge in the circumferential direction of the cylindrical portion.

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