JP3479697B2 - Container stopper - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container such as a bottle made of glass or the like, and more particularly to a stopper for a bottle of sake.

[0002]

2. Description of the Related Art An example of the conventional container stopper will be described with reference to FIGS. The container stopper 1 is used as a stopper for one shovel bottle 11 of sake or the like. As shown in FIG. 9, the container stopper 1 includes an outer wall portion 2 and an inner wall portion 3 each formed in a short cylindrical shape. The outer wall portion 2 and the inner wall portion 3 are arranged at a distance from each other, and the lower end portions of both are connected to each other. Outer wall 2
Has a brim-shaped portion 4 formed along the outer periphery of the upper end portion thereof, and a large-diameter portion 5 formed in the central portion thereof. A small diameter portion 6 having a diameter smaller than that of the large diameter portion 5 is formed in the lower portion of the outer wall portion 2. In addition, the upper opening of the inner wall portion 3 has a lid 7
Is blocked by. Furthermore, the small diameter portion 6 of the container stopper 1
A cover 8 made of aluminum foil is provided so as to cover the above from below. The outer side wall portion 2 and the inner side wall portion 3 form a stopper body portion 9, and the stopper body portion 9 and the collar portion 4 are made of synthetic resin such as polyethylene.

This container stopper 1 has a large-diameter portion 5 and a cover 8.
Is formed to have a larger outer diameter than the inner diameter of the bottle mouth portion (opening portion) 10. Therefore, as shown in FIG. 8, the lower surface 4a of the collar-shaped portion 4 has an upper edge (opening edge). ) With the container stopper 1 inserted into the bottle mouth 10 until it comes into contact with the bottle 10a, the stopper body 9 is compressed so that the outer peripheral surfaces of the large-diameter portion 5 and the cover 8 are the inner circumference of the bottle mouth 10. It is pressed against the surface 10b, and thereby the container stopper 1 is held so as not to come off from the bottle mouth portion 10. The outer peripheral surface of the large-diameter portion 5 and the inner peripheral surface 10b of the bottle mouth portion 10 are in close contact with each other to maintain the sealed state.

Further, as shown in FIG. 8, the reason why the small-diameter portion 6 is covered with the cover 8 is not only to improve the appearance of the container stopper, but also to prevent the container stopper from coming off unintentionally. . Since the frictional force between the synthetic resin such as polyethylene and the glass is extremely small, when the container stopper 1 is made of only the synthetic resin, the stopper 1 is pushed out by the slight internal pressure in the bottle 11 and comes off. By providing the foil coating, the frictional force with the bottle mouth portion 10 is significantly increased, and even if the internal pressure in the bottle is slightly increased, the stopper 1 can be prevented from being pushed out and coming off.

Further, as shown in FIG. 8, the upper surfaces of the lid 7 and the collar portion 4 are covered with a decorative cover 22. The decorative cover 22 is made of tin, and the outer edge portion 22a covers the lower edge portion 23a of the grip portion 23 and terminates. The grip portion 23 is a portion that is gripped by a finger when the container stopper 1 inserted into the bottle mouth portion 10 is pulled out. An engaging portion 24 having a diameter smaller than that of the grip portion 23 is provided below the grip portion 23. The lower surface 4a of the locking portion 24 is the upper edge 1 of the bottle mouth portion 10.
Abut 0a. As shown in FIG. 7, with the container stopper 1 inserted in the bottle mouth portion 10, the container stopper 1 and the bottle mouth portion 10 are covered with the sealing body 25. The sealing body 25 is made of aluminum or an alloy thereof and is for ensuring that the container stopper 1 is not opened. The sealing body 25 includes a short cylindrical peripheral wall 25a and an upper side wall 25b that closes the upper opening. The sealing body 25 covers the container stopper 1 and the bottle mouth portion 10 and bends a predetermined portion of the peripheral wall 25 a corresponding to the constricted portion 26 formed in the bottle mouth portion 10 into the constricted portion 26. I am allowed. This prevents the sealed body 25 from coming off the bottle mouth 10. When removing the sealing body 25 from the bottle mouth part 10, the gripping part 27 shown in FIG. 7 is pinched with a finger and the sealing line 25 is cut along the cut line (the part having the cut) and the unsealing guide line (not shown). You just have to tear the body 25.

[0006]

However, FIG. 7 to FIG.
At the time of recovery, the container stopper 1 shown in (1) must be separated into the synthetic resin that occupies most of the container stopper, the tin plate of the decorative cover 22, the aluminum of the sealing body 25, and the aluminum foil of the covering body 8. However, the decorative cover 22 strongly grips the gripping portion 23 of the container stopper, and the aluminum foil of the covering body 8 is strongly bonded to the stopper body 9 by heat welding. It is very difficult to comply with the Container Recycling Law.

The empty bottle 11 is collected by the manufacturer, washed, and reused.
As shown in FIG. 8, there is a case where the container stopper 1 is taken over by the manufacturer. In this case, the decorative cover 22 of the container stopper 1 may be rusted by rainwater or the like, and this rust may adhere to the upper edge 10a of the bottle mouth 10. If rust adheres to the bottle mouth portion 10, it is difficult to remove the rust by cleaning, so that the bottle 11 having such rust cannot be reused and must be discarded.

Further, as is well known, in the bottling operation of sake, heated sake is filled in a bottle 11 in order to prevent post-fermentation and to prevent sterilization from being mixed therein.
However, since heated sake has a high vapor pressure, there is a problem that the stopper 1 will fall off before the sealing body 25 is covered unless the stopper 1 having the covering 8 is used.

Therefore, the present invention does not use the decorative cover 22 made of tin or the cover 8 made of aluminum foil, which is difficult to separate from the main body of the synthetic resin plug, and does not drop off during the bottling operation. It is intended to realize a stopper.

[0010]

The main body of the container stopper according to the present invention comprises an inner wall portion and an outer wall portion which are integrally formed of a synthetic resin having elasticity and an opening at the upper end of the inner wall portion. It has a closed lid and a flange-shaped portion that extends from the upper end of the outer wall portion to the periphery, and the inner wall portion and the outer wall portion are connected to each other at the lower end. A large diameter portion having a diameter larger than the inner diameter of the opening of the container is formed at the upper portion of the outer peripheral surface of the outer wall portion, and a small diameter having a diameter slightly larger than the opening of the container and smaller than the large diameter portion is formed at the lower end. A portion is formed, and an annular first groove is provided between the large diameter portion and the small diameter portion.

The peripheral edge of the decorative cover that covers the upper surface of the collar-shaped portion and the upper edge of the cylindrical sealing body that surrounds the outer peripheral surface of the opening of the container are joined by a thin tear line that can be easily torn. The tear line portion is pushed into an engaging groove formed on the peripheral edge of the collar portion.

When the above stopper is pushed into the opening of the container,
When the internal pressure in the container is high, the internal pressure acts on the inner wall portion so as to push the lower portion thereof outwardly, whereby the small diameter portion at the lower end of the outer wall portion expands outward, The inner surface of the opening is strongly pressed, which makes it difficult to remove the stopper from the container opening. At this time, the first groove facilitates the outward expansion of the small diameter portion.

In this state, the decorative cover and the sealing body cover the stopper and are attached to the opening of the container, and thereafter, the sealing body prevents the stopper from coming out of the opening of the container.

According to the second aspect of the invention, the second groove extends upward from the first groove to an intermediate position between the upper end and the lower end of the large diameter portion. If the container is unopened and there is a sealed body, even if the container is placed in a kitchen where the temperature is high,
The stopper does not escape due to the increase in internal pressure. However, if the contents are sake, the sealed container is often removed and the opened container is often placed in a kitchen or the like. However, if the second groove is provided in this way, the internal pressure increases and the stopper rises. Second
When the upper end of the groove reaches the opening end of the container, the internal pressure is released to the outside through the second groove, and the stopper does not rise further to escape from the container opening. Therefore, it is possible to prevent foreign matter from entering the container from the outside and to prevent the contents from flowing out when the container falls.

[0015]

[0016]

[0017]

[0018]

[0019]

[0020]

[0021]

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of a container stopper according to the present invention will be described with reference to the drawings. This container stopper 12 is
Similar to the conventional one, it is used as a stopper for one container (container) 11 of sake or the like. The container stopper 12 is shown in FIG.
As shown in FIG. 3, each has an outer wall portion 13 and an inner wall portion 14 which are formed in a substantially short cylindrical shape. The outer wall portion 13 and the inner wall portion 14 are arranged at a distance from each other, and the lower end portions of both are connected to each other. The outer wall portion 13 has a collar-shaped portion 15 formed along the outer periphery of the upper end portion, and on the lower side thereof, a large diameter portion 16, an annular first groove 17, and a small diameter portion 1
8 are sequentially formed. The diameter of the small-diameter portion 18 is the large-diameter portion 1
It is formed to be slightly smaller than 6. In addition, the inner wall portion 14
The upper opening is closed by the lid 7. The outer side wall portion 13 and the inner side wall portion 14 form a plug body portion 19. The plug body 19 and the collar 15 are integrally formed of synthetic resin such as polyethylene.

The large diameter portion 16 of the container stopper 12 is the bottle mouth portion 1.
Since it is formed larger than the inner diameter of 0, when the lower surface of the collar-shaped portion 15 is inserted until it contacts the upper edge of the bottle mouth portion 10 as shown in FIG. It adheres to the inner surface of the bottle mouth portion 10 to maintain airtightness. When the internal pressure in the container 11 is high, this internal pressure causes the lower end of the inner wall portion 14 to expand outwardly, whereby the small-diameter portion 18 of the outer wall portion 14 is pressed against the inner surface of the bottle mouth portion 10. This makes it difficult for the stopper 12 to be pushed out from the bottle mouth portion 10 of the container 11.

[0024]

Further, as shown in FIGS. 2 and 5 (b), four second grooves 20 are provided on the outer surface of the large diameter portion 16 along the length direction of the container stopper 12. is there. The four second grooves 20 are provided at positions where adjacent ones along the circumferential direction of the outer peripheral surface of the large-diameter portion 16 form an angle of about 90 ° with each other. The lower end of each of the four second grooves 20 is open inside the first groove 17.

As shown in FIGS. 2 and 4, the collar portion 15 has a shape that covers the upper edge 10a of the bottle mouth portion 10 when it is inserted into the bottle mouth portion 10, and the outer peripheral surface is a short cylinder at the upper portion. A grip 30 having a shape is formed. The lower edge 3 of this grip 30
An annular engagement groove 31 is provided along the outer peripheral surface above 0a, and the cross-sectional shape of this engagement groove 31 is rectangular.
Further, as shown in FIG. 2 and FIG. 5B, engaging edge portions 32 for opening the stopper are provided at two locations on the lower edge of the grip portion 30.
The two engaging edge portions 32 are provided at symmetrical positions of the lower edge portion 30a of the grip portion 30, and each engaging edge portion 32 has the lower edge portion 30a of the grip portion 30 within a range of about 60 °. It is formed by piercing over. As shown in FIG. 2, the diameter of the inner peripheral surface of each engaging edge portion 32 is such that the lower surface 15 a of the collar-shaped portion 15 is the upper edge of the bottle mouth portion 10 with the container stopper inserted in the bottle mouth portion 10. 10a
The size is such that it can be in close contact with and covered.

As shown in FIGS. 1 and 4, a decorative cover 33 is attached to the upper surfaces of the plug body 19 and the collar 15 and the outer edge 33a of the decorative cover 33 is engaged. It is bent and engaged in the groove 31. The upper edge of the sealing body 34 is connected to the outer edge 33a of the decorative cover 33 in a tearable state. The connecting portion (opening guide wire 35) is formed to have a thin wall thickness.
The sealing body 34 has a short cylindrical shape and is attached in a state of covering the outer peripheral surface of the bottle mouth portion 10, and a predetermined portion of the peripheral wall corresponding to the constricted portion 26 formed in the bottle mouth portion 10 is fixed to the constricted portion 26.
It is bent inward so that the sealing body 34 does not come off from the bottle mouth 10. At the lower part of the sealing body 34, there is provided a gripping portion 27 formed by a cut line (a portion having a notch) 36, and an opening guide wire 37 (a portion having a thin wall thickness) is provided above the gripping portion 27. It is provided. The decorative cover 33 and the sealing body 34 are made of aluminum or an alloy thereof and are integrally formed as one component.

The diameter A of the large diameter portion 16 is about 20.9 m.
m, the maximum diameter B of the small-diameter portion 18 is about 19.7 mm, the diameter C of the first groove 17 is about 19.2 mm, and the diameter D of the collar portion 15 is about 29.9 mm. The length of the large diameter portion 16 in the center line direction is about 9 mm, and the length of the small diameter portion 18 in the center line direction is about 3 mm. The width of the first groove 17 is about 3 mm, the width of the second groove 20 is 1 to 2 mm, the depth of the second groove 20 is about 0.6 mm, and the length of the second groove 20 in the center line direction. Is about 4 mm. The inner diameter of the bottle mouth portion 10 is about 19.2 to 20.
It is 2 mm.

According to the container stopper 12 with the sealing body 34 constructed as described above, as shown in FIG.
9 is inserted into the bottle mouth portion 10 of the bottle 11, and the sealed body 3
4 can cover the outer peripheral surface of the bottle mouth portion 10. When removing the sealing body 34, the holding portion 27 of the sealing body 34 is pinched with a finger to open along the cutting line 36 and tear along the unsealing guide line 37, and further, the boundary between the decorative cover 33 and the sealing body 34 is separated. It may be torn along the unsealing guide wire 35. Figure 2
FIG. 6 is a view showing a state in which the sealing body 34 is removed, and the decorative cover 33 is coupled to the upper portion of the container plug 12.

In the case of bottling sake, even if the internal pressure of the container 11 increases due to heating as described above, the outer wall portion 1
Since the small-diameter portion 18 of No. 4 is pressed against the inner surface of the bottle mouth portion 10, the stopper 12 does not escape from the bottle mouth portion 11 with such an internal pressure. Therefore, the decoration cover 33 is attached to the bottle mouth portion 10.
Also, the sealing body 34 can be attached without any trouble. After that, as the temperature of the container 11 naturally drops, the internal pressure also drops, so that this sealed state can be maintained.

In the case of sake, it is often the case that the container 11 is opened and a part of the contents is taken out, and then the bottle mouth 10 is again closed with the stopper 12 and the container 11 is left at a high temperature such as in a kitchen. When the stopper 12 is placed in a place where it easily becomes, the stopper 12 may gradually rise and eventually fall off. Then,
There is a risk that foreign matter may enter the container 11 or the container may fall and the contents may spill out. However, when the stopper according to the present invention is used, when the stopper 12 is slightly raised by the internal pressure and the upper end of the second groove is opened to the outside, the internal pressure is released.
The stopper 12 can remain in the bottle mouth 10 without falling off.

Further, as shown in FIG. 6, if a third groove 40 extending in the direction crossing the small diameter portion 18 at the lower end of the peripheral surface of the outer wall portion 13 is provided, the internal pressure generated in the container 11 is Third
Since it escapes to the outside through the groove 40, the first groove 17 and the second groove 20 in this order, the function of preventing the plug 12 from falling off becomes more reliable.

Immediately after removing the sealing body 34, the above-mentioned stopper is
Since the large-diameter portion is strongly pressed and inserted into the bottle mouth portion 10, it may be difficult to open the stopper by grasping the grip portion 30, but the stopper opener 29 shown in FIG. The plug can be easily opened by engaging with the engaging edge portion 32 on the lower surface of the grip portion shown in 2 and pulling it up.

As described above, although the main body of the stopper according to the present invention is made of only synthetic resin, its small diameter portion is pressed against the inner surface of the bottle mouth portion 10 by the inner pressure of the container, so that the bottle is sloppy. Since the decorative cover 33, which does not fall off the mouth 10 and covers the collar-like portion, is aluminum or its alloy of the same quality as the sealing body 34, it does not rust even if the empty bottle is left unattended. , So it does not contaminate the mouth of the bottle

Moreover, since the decorative cover 33 is made of soft metal, it can be easily separated from the synthetic resin portion by using a tool such as a bottle opener. Therefore, the sealing cover made of aluminum or its alloy is used. Body 34
Also, it becomes possible to separate and collect the decorative cover 33 and the plug body portion made of only synthetic resin.

In the case of the conventional plug, the plug body portion 9 and the collar portion 4 made of synthetic resin, and the cover body 8 made of aluminum foil welded to the lower end of the plug body portion 9 are components.
A decorative cover 22 made of a tin plate that covers the upper surface of the collar-shaped portion 4.
And four points of the sealing body 25 made of aluminum or its alloy were required, and its processing was complicated. However, according to the present invention, the plug body portion made of synthetic resin, the decorative cover and the sealing body are used as the parts. Two points, that is, an integral part of aluminum or its alloy, are sufficient, and the processing can be greatly simplified.

[0037]

As described above, the stopper according to the present invention eliminates the need for the decorative cover made of tin and the covering cover made of aluminum foil, which are used in the conventional stoppers, thereby reducing the number of parts and processing means. Is also reduced, making it easier to separate and collect parts,
It is possible to realize a stopper that does not easily escape from the mouth of the bottle.

[0038]

[0039]

[0040]

[0041]

[0042]

[0043]

[0044]

[0045]

[0046]

[0047]

[0048]

[0049]

[0050]

[Brief description of drawings]

FIG. 1 is a partial cross-sectional front view showing a state in which a container stopper with a closure according to a first embodiment of the present invention is inserted into a bottle mouth portion and covered with the closure.

FIG. 2 is a partial cross-sectional front view showing a state in which the closure is removed from the container stopper with the closure attached to the bottle mouth portion shown in FIG.

FIG. 3 is a partial cross-sectional front view showing a state in which the container stopper according to the first embodiment moves in a releasing direction due to the pressure in the cavity of the bottle and releases the pressure gas in the cavity to the outside of the bottle.

FIG. 4 is a partial sectional front view of the container stopper according to the first embodiment.

FIG. 5 is a container stopper according to the first embodiment, (a)
Is a plan view and (b) is a bottom view.

FIG. 6 is a partial cross-sectional front view of the container stopper according to the second embodiment of the present invention.

FIG. 7 is a partial cross-sectional front view showing a state in which a conventional container stopper is inserted into a bottle mouth portion and covered with a sealing body.

FIG. 8 is a partial cross-sectional front view showing a state in which the container stopper and the sealing body that covers the bottle mouth portion shown in FIG. 7 are removed.

FIG. 9 is a central longitudinal cross-sectional view of a conventional container stopper.

[Explanation of symbols]

12 Container stopper 15 Collar 16 Large diameter part 17 First groove 18 Small diameter part 19 Plug body 20 second groove 30 grip 31 engagement groove 32 engagement edge 33 decorative cover 33a Outer edge of decorative cover 34 Sealed body 40 Third groove 41 First peripheral wall 42 Second peripheral wall

Claims (2)

(57) [Claims] 1. An outer wall portion and an inner wall portion which are cylindrical and are connected to each other at a lower end, a lid body which closes an opening of an upper end of the inner wall portion, and a peripheral portion from an upper end of the outer wall portion. The flange-shaped portion that expands toward the outside is formed of a synthetic resin that is elastically deformed by a pressing force, and a large-diameter portion that is larger than the inner diameter of the opening of the container is formed on the outer peripheral surface of the outer wall portion. Together with the lower end, a small diameter portion slightly larger than the inner diameter of the opening of the container and smaller than the large diameter portion is provided, and an annular first groove is provided between the large diameter portion and the small diameter portion, In the engagement groove formed in the annular shape on the peripheral surface of the collar-shaped portion, the peripheral edge of the decorative cover that covers the upper surface of the collar-shaped portion and the upper edge of the cylindrical sealing body that surrounds the outer peripheral surface of the opening of the container. And then easily tear the peripheral edge of the decorative cover and the upper edge of the sealing body in the engaging groove. Container closure, characterized in that connected by thin tear line. 2. The container plug according to claim 1, wherein the second groove extends upward from the first groove to an intermediate position between the upper end and the lower end of the large diameter portion.