JPH0335729Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a bottle opening/closing device consisting of a mouth part of a bottle containing alcoholic beverages and a stopper attached to the mouth part.

[Prior Art] Conventionally, a synthetic resin stopper has been generally used as a stopper for this type of device.

However, in such cases, when a synthetic resin stopper is placed on a bottle, after the force of the stopper is removed, the stopper lifts up slightly over time.
It is normal for the seal to be slightly reduced.

This is thought to be due to the pressure of the air inside the bottle compressed by the stopper.

As a stopper that solves these problems, the Jitsukai Sho
The crown of Publication No. 58-19945 is mentioned.

Although this crown was not devised to solve the above-mentioned problems, its form was unexpectedly designed to improve upon the above-mentioned problems.

This crown is formed as shown in Fig. 6, and is made of synthetic resin, and on the lower surface of its top wall a is a cylinder c whose inner surface is a straight cylinder and whose outer surface is bulged into an arcuate cross-section b, as shown in the figure. is formed. l is the outer cylinder, e is the cap thus formed, f
is a seal portion integrally provided with the same cap e via a fissure g. h indicates the base end of the inner cylinder c.
The crown thus formed is formed so as to prevent the bottle opening after capping by sandwiching the bottle spout (not shown) from the outside and inside by the outer cylinder d and the bulging part b of the inner cylinder c. .

[Problems to be solved by the invention] However, even with the above-mentioned crown, the problem of floating has not been satisfactorily solved. The reason for this is probably that the inner cylinder c has a bulged outer surface b, which makes the pressure contact.
Although lifting seems to be prevented,
The inner cylinder c has an increased thickness due to the bulge b,
Therefore, the rigidity is increased, and the flexibility that comes into close contact with the inner surface of the bottle mouth is reduced.In addition, since the base end h of the inner cylinder c is formed thin, the base end h is reduced by the pressure inside the bottle. As it rises, it bends slightly inward, which seems to help it float up.

This invention was made to solve these problems, and its purpose is to provide a bottle opening/closing device consisting of a stopper and a bottle opening that can sufficiently prevent the bottle from floating after the bottle is capped.

[Means for Solving the Problems] To describe this invention that achieves the above object, it is formed at the lower part slightly below the upper end 2 of the inner surface of the bottle mouth 1, and has a diameter larger than the inner surface of the upper end 2. A large diameter portion 3, a synthetic resin stopper 4 mounted in the bottle mouth 1, and a straight cylindrical shape having a predetermined thickness integrally provided on the lower surface of the top wall 17 of the stopper 4. a cylindrical portion 5 having a thickness similar to that of the cylindrical portion 5; The curved part 18 is formed to be equal to or thinner than the cylindrical part 5, the curved slope part 7 formed at the lower part of the curved part 18 so as to become thinner toward the tip, and the top wall. On the lower surface of 17, an outer cylinder 15 integrally formed on the outside of the cylinder part 5 at a predetermined interval, a protrusion 9 provided on the inside of the outer cylinder 15, and an outer periphery of the bottle mouth 1. a recess 8 formed at a position slightly below the upper end portion 2;
This is a bottle opening/closing device comprising the projection 9 that presses into the bottle.

[Operation] When an alcoholic beverage or the like is stored in the bottle opening/closing device formed in this manner and the above-mentioned stopper is plugged into the mouth of the bottle, the air inside the bottle is compressed and the pressure is increased.

And since the pressure of capping is immediately removed,
Pressurized air acts on the capped stopper to lift the stopper. However, unlike the conventional similar device shown in FIG. 18 is first formed in a curved manner, and a curved slope part 7 is formed at its lower end, which becomes thinner toward the tip, and the thickness of the curved part 18 is equal to or equal to the wall thickness of the cylindrical part 5. It will be easily understood that as a result of being formed thinner, this curved portion 18 is given more flexibility than the bulged portion b shown in the conventional example. As a result, the curved portion 18 is bent outward by the pressure of the air, and is brought into close contact with the inner surface of the bottle mouth.

Furthermore, the large diameter portion 3 is located above the curved portion 18.
The upper end 2 of the inner surface of the bottle mouth 1, which has a smaller diameter, is formed in an overhang shape, and therefore the stopper 4 cannot rise any further. Further, the cylindrical portion 5 is formed in a straight cylindrical shape, and the cylindrical portion 5 is formed to be thicker than the curved portion 18 or thicker than the curved portion 18. As a result, this portion is more rigid than the curved portion 18. In addition, the inner cylinder c in the drawing shown in the conventional example is
Since the base end h is formed thin, it is easily bent, but it is formed to easily exhibit rigidity.

Therefore, the cylindrical portion 5 is difficult to bend, and therefore the cylindrical portion 5
The rigidity of the curved portion 18 and the flexibility of the curved portion 18 complement each other to prevent lifting. In addition, the upper end portion 2 formed at the bottle mouth has a relatively small diameter compared to the large diameter portion 3. Due to these three requirements, the container opening/closing device of this invention prevents the cap from lifting after capping. are being prevented.

[Example] In Figures 1 to 5, 1 is the bottle mouth, 2
is the upper end of the inner surface, 3 is the lower part of the upper end 2 of the same inner surface,
This is a large diameter portion formed to have a larger diameter than the upper end portion 2.
Note that this large-diameter portion 3 is not specially designed and formed to have a larger diameter than the inner upper end portion 2, but is formed naturally during bottle molding, even though the inside of the bottle mouth was designed to have the same diameter. In this invention, such a large diameter part is also included in the large diameter part 3 of this invention.

Reference numeral 4 indicates a plug made of synthetic resin, which has a cylindrical portion 5 integrally formed on the lower surface of its top wall 17, and an annular curved portion convexly curved outward at the lower portion of the cylindrical portion 5. A portion 18 is integrally provided.

The outer surface 6 of this curved portion 18 is the large diameter portion 3.
It is formed with a slightly larger diameter. 19 is the curved part 1
This is the inner side of 8.

Next, 7 is the outer surface 6 and inner surface 19 of the curved portion 18.
This is a curved sloped portion that has a slope that becomes thinner toward the tip. 20 is the tip of the curved slope portion 7;
is formed to have a smaller diameter than the largest diameter portion of the outer surface 6 of the curved portion 18.

In the figure, 8 indicates a recess formed on the outer periphery of the bottle mouth 1, 9 a protrusion that engages with the recess 8, 10 a tear groove, 11 a vertical tear groove, 12 a knob, and 13 a hole. Further, 14 indicates a protrusion, and 15 indicates an outer cylinder.

That is, the recessed portion 8 is provided approximately corresponding to the large diameter portion 3, and the bottle mouth 1 is held between the curved portion 18 and the protrusion 9 from the inside and outside. Regarding the usage of this embodiment, a consumer or the like holds the knob 12, tears off the vertical tearing groove 10, removes the outer cylinder 5, and uses the remaining part as a regular stopper.

[Effects of the invention] This invention is constructed as described above, and the cylindrical portion 5
A curved portion 18 formed to be equal to or thinner than the cylindrical portion 5 is provided at the lower end of the curved portion 1 .
A curved slope part 7 is provided at the lower part of the bottle mouth 2, and an overhanging part 2 is provided above the large diameter part 3.
The curved portion 1 is easily bent due to the formation of
8, the cylindrical portion 5 exhibiting rigidity, and the upper end portion 2 complement each other to prevent the stopper from lifting up.

[Brief explanation of drawings]

Figures 1 to 5 show an embodiment of this invention, in which Figure 1 is a half-sectional view of a bottle closure device, Figure 2 is a diagram corresponding to Figure 1 showing the second embodiment, and Figure 3 is a diagram corresponding to Figure 1 showing the second embodiment. The figure is a half-sectional view of the stopper of the same device showing the third embodiment, FIG. 4 is a cross-sectional view of the bottle opening of the same device, and FIG. 5 is a diagram corresponding to FIG. 4 showing the fourth embodiment. , FIG. 6 is a half-sectional view of a plug of a conventional similar device. 1... Bottle mouth, 2... Inner upper end, 3... Large diameter part, 4... Stopper, 5... Cylindrical part, 7... Curved slope part,
8... recess, 9... protrusion, 15... outer cylinder, 18...
...curved section.

Claims (1)

[Scope of utility model registration request] A large-diameter portion 3 formed at a lower portion slightly below the upper end 2 of the inner surface of the bottle mouth 1 and having a larger diameter than the inner surface of the upper end 2; and a stopper 4 made of synthetic resin that is installed inside the bottle mouth 1. A cylindrical portion 5 having a predetermined thickness and formed in a straight cylindrical shape is integrally provided on the lower surface of the top wall 17 of the stopper 4; A curved portion 18 curved outwardly in a convex shape and pressed against the diameter portion 3; the curved portion 18 having a thickness equal to or thinner than the cylindrical portion 5; and the curved portion A curved slope part 7 formed at the lower part of the cylindrical part 18, which is formed to become thinner toward the tip part, and a lower surface of the top wall 17 are integrally formed on the outside of the cylindrical part 5 at a predetermined interval. An outer cylinder 15 formed in the outer cylinder 15 and a protrusion 9 provided inside the outer cylinder 15.
A bottle opening/closing device comprising: a recess 8 formed on the outer periphery of the bottle spout 1 at a position slightly below the upper end 2; and the protrusion 9 press-fitted into the recess 8.