JP3239242B2 - Structure of spout for ramune bottle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a plug for sealing a bottle mouth of a so-called ramune bottle,
The present invention relates to a structure of a spigot for a Ramune bottle integrally formed and a combination structure of the sponge and a Ramune bottle.

[0002]

2. Description of the Related Art Conventionally, a spigot for a ramune bottle has an inner cylindrical packing portion which holds a glass ball and press-fits the inner surface of the bottle mouth, and an engaging portion which engages with a groove on the outer surface of the bottle mouth. The outer cylindrical cap portion is formed separately (Japanese Utility Model Publication No. 63-185)
No. 94, Japanese Utility Model Application Laid-Open No. 62-152939), and an outer cylindrical shape having an inner cylindrical packing portion for holding a glass ball and press-fitting the inner surface of the bottle mouth, and an engaging portion engaging with a groove on the outer surface of the bottle mouth. The cap portion is integrally formed (Japanese Utility Model Laid-Open No. 55-12343)
9, No. 62-152939).

[0003] However, when the inner cylindrical packing portion and the outer cylindrical cap portion are formed separately, for example, the inner cylindrical packing portion is made of plastic such as vinyl chloride, and the outer cylindrical cap portion is formed. There is an advantage that the material can be changed in consideration of removal of the plug and sealing properties, such as made of metal such as aluminum, but the manufacturing process and the process of attaching the plug to the ramune bottle are two types. The disadvantages in terms of costs were great.

Therefore, recently, Japanese Utility Model Application Laid-Open No.
No. 439 and Japanese Utility Model Application Laid-Open No. 62-152939 have been proposed in which the inner cylindrical packing portion and the outer cylindrical cap portion are integrally formed. When the inner cylindrical packing portion and the outer cylindrical cap portion are integrally formed, the upper portions of both portions are connected by an annular packing portion, and the inner surface thereof is pressed against the upper end surface of the bottle mouth.

Further, as described in Japanese Utility Model Application Laid-Open No. 62-152939, a glass ball is previously held in an elastic holding portion connected to an inner cylindrical packing portion before plugging, so that the glass ball after the injection of the ramune solution is filled. There is also disclosed a concept of omitting the step of inverting the bottle, preventing collision between the glass ball and the inner surface of the bottle, and preventing breakage of the bottle.

[0006]

However, when the plug is formed in an integral structure as described above, the resistance when the plug is pressed and inserted over the step formed on the outer periphery of the bottle mouth of the ramune bottle. Is increased, so that the plug is formed using a soft material that is relatively easily deformed, but if the plug is formed of a soft material, it can be easily pressed in by elastic deformation. On the other hand, the sticking force and sealing property of the plug may be reduced, and the reliability as a product may be impaired.

Further, the inner cylindrical packing portion is made of a soft material,
According to the method in which the outer cylindrical cap portion is made of a hard material, the manufacturing process is complicated and not easy, and the manufacturing cost increases.

Further, as shown in Japanese Utility Model Application Laid-Open No. 62-152939, when the packing part for the inner azalea and the elastic holding part are made of polyethylene or the like which is a soft synthetic resin, the mouth plug is sometimes replaced with a ramnet. There is a danger that the liquid will fall off due to the gas pressure of the liquid, and furthermore, since the elastic holding portion is a thin cylindrical shape, the holding force is weak, and the glass ball may fall off before plugging.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. Unlike conventional soft synthetic resins, the present invention can be applied to a plug made of polypropylene, polyethylene terephthalate or other known hard synthetic resins. For the ramune, which can be manufactured easily and inexpensively, without falling off, reducing the resistance at the time of tapping, ensuring the holding of the glass ball, and ensuring the sealing performance. The purpose is to obtain a plug.

[0010]

SUMMARY OF THE INVENTION In the present invention, the shape of the inner cylindrical packing portion is made simple and special so that reliable sealing and retaining can be achieved. That is, the configuration of the present invention is characterized in that the entire material is made of a hard synthetic resin, and the inner surface of the inner cylindrical packing portion communicates with the upper opening member insertion hole to prevent the glass ball from coming off. A stopper portion having a tapered surface, a curved surface, a step portion or a similar shape, and a straight portion which is connected to the stopper portion and press-fits a glass ball is formed.The outer surface portion of the inner cylindrical packing portion is defined as a bottle mouth inner surface. An insertion portion formed so as to have a gap therebetween, and an outer diameter of the connecting portion connected to the insertion portion is substantially equal to an inner diameter of the bottle mouth, or slightly larger than an inner diameter of the bottle mouth, and the annular shape The plug is formed by a press-fitting portion having a taper that has a slightly smaller diameter over a connecting portion with the portion.

The present invention also relates to a plug structure characterized by a combination of the plug configured as described above and a Ramune bottle provided with a ring-shaped protrusion at the upper end of the inner surface of the bottle mouth. is there.

[0012]

[Function] Since the spout is made of a hard synthetic resin, it has good spring properties and low frictional resistance with the bottle. Therefore, even if the inner cylindrical packing part and the outer cylindrical cap part are integrally formed, The sliding resistance at the time of plugging can be made relatively small. The glass ball is held by being press-fitted into the straight portion of the inner cylindrical packing before plugging. Due to the press-fitting of the glass ball, the tapered press-fitting portion on the outer surface receives an external force,
The press-fit portion is further expanded outward. If the main stopper is plugged in this state, the press-fitting portion is tightly pressed against the inner surface of the bottle mouth. At the same time, the engaging portion of the outer cylindrical cap portion also engages with the groove on the outer surface of the bottle mouth to prevent the stopper from coming off. After tapping,
Since the internal gas pressure acts on the glass ball and presses the glass ball against the stopper portion, the inner cylindrical packing portion is further tightened by the internal pressure from the glass ball and the external pressure from the inner surface of the bottle opening, and the seal works without permission. Increases power and retaining force.

A ring-shaped projection is generally formed at the upper end of the inner surface of the mouth of the ramune bottle during the manufacturing process. The protrusion can be large or small depending on the manufacturing conditions,
In the present invention, the protrusion is intentionally provided positively, and the pressing force or the biting force against the base of the press-fitting portion is increased by using the protrusion to complete the retaining function and the sealing function.

[0014]

FIG. 1 is a half sectional view showing an embodiment of the present invention, FIG. 2 is a top view, and FIG. 3 is a half sectional view showing a state in which it is mounted on a bottle opening. In this plug, an inner cylindrical packing portion 1 and an outer cylindrical cap portion 3 connected to the inner cylindrical packing portion 1 via an annular portion 2 are integrally formed of the same hard synthetic resin. As the hard synthetic resin, a resin having a good spring property and a small frictional resistance with a material constituting the ramune bottle 20 is used.

The inner surface of the inner cylindrical packing portion 1 is provided with an upper stopper insertion hole 4 having an inner diameter smaller than the diameter of the glass ball 10.
And a straight portion 12 connected to the stopper portion 11 and press-fitted with the glass ball 10. Stopper 11 is for preventing the escape upward marbles 10, a stepped portion 13 provided at the connection portion of the cap removal tool insertion hole 4 and the tapered surface as shown, the tip of the step portion 13 Is a rib that hangs down
Is formed. The straight portion 12 has an inner diameter slightly smaller than the diameter of the glass ball 10 to hold the press-fitted glass ball 10.

Next, the outer surface of the inner cylindrical packing portion 1 has a taper having a gap 14 formed between the outer surface of the straight portion 12 and the inner surface of the bottle mouth so that the outer surface of the straight portion 12 can be easily inserted into the fish basket mouth 21. Insertion portion 15 and connecting portion 16 connected to the insertion portion 15
Is approximately equal to the inner diameter of the bottle mouth 21 or the bottle mouth 15
And a press-fit portion having a tapered surface slightly smaller in diameter toward the connecting portion 17 with the annular portion 2. That is, the press-fitting portion 18 is formed in a reverse tapered surface whose diameter is slightly increased from the base portion to the connecting portion 16 with the insertion portion 15, and the taper angle θ is formed extremely small.

The outer cylindrical cap portion 3 is integrally connected to the inner cylindrical packing portion 1 via the upper annular portion 2, and the inner surface of the outer cylindrical cap portion 3 has an outer surface of the bottle opening 21. Is provided with an engagement portion 5 which is press-fitted into an engagement groove 22 provided in the groove. If the annular portion 2 is provided with an annular projection 6 that is in pressure contact with the upper surface of the bottle mouth 21, the sealing performance is further improved.

The spout thus constructed is connected to the ramune bottle 2
FIG. 3 shows a state in which the camera is mounted on the camera. This bottle mouth 21
A ring-shaped projection 23 having an arc-shaped cross section as shown in the figure is provided at the upper end of the inner surface of the. The protrusion 23 is generally very small, but in this embodiment, it is made slightly larger when the ramune bottle is manufactured.

In this plug, a glass ball 10 is press-fitted into the straight portion 12 of the inner cylindrical packing portion 1 and held in advance. Then, after injecting and filling the ramune liquid into the ramune bottle 20, the main stopper is pressed into the bottle mouth 21 by a stoppering machine (not shown). Also, since this spout is made of hard synthetic resin,
It has good spring properties and can reduce sliding resistance when plugging. When the glass ball 10 is press-fitted as described above, a force in the direction of arrow a is applied to the press-fit portion 18 of the inner cylindrical packing portion 1, and the outer diameter of the press-fit portion 18 slightly increases. As a result, the press-fit portion 1
8, a sufficient press-fitting allowance for the inner surface of the bottle mouth can be secured.

Next, when the glass plug 10 is pressed into the straight portion 12 and held by a tapping machine, the engaging portion 5 of the outer cylindrical cap portion 3 slides while expanding outward. Then, the engaging portion 5 is fitted and locked in the groove 22 on the outer surface of the bottle mouth. At the same time, the press-fitting portion 18 is tightly pressed against the inner surface of the bottle mouth, so that the inner surface portion of the bottle mouth can be reliably sealed. In addition, since the press-fitting portion 18 has a tapered surface whose diameter is slightly increased outward from the base portion to the connecting portion 16 with the insertion portion 15, the protrusion 23 provided at the inner end of the bottle mouth 21 is somewhat large. It is also possible to get over the protrusion 23 relatively easily. When the tapping is completed, the protrusion 23 bites into the root of the press-fitting portion 18, so that the stopper and the seal of the spout can be further reliably secured. In addition, since the reaction force from the inner surface of the bottle mouth of the press-fitting portion 18 acts in the direction of tightening the glass ball 10 (the direction of the arrow b), the sealing of the glass ball 10 is ensured.

Further, the glass ball 10 moves upward due to the gas pressure of the ramune liquid in the bottle, but is prevented from moving by the stopper portion 11 and is moved by the edge 13 a of the step portion 13.
To reliably prevent outgassing from the surrounding area of the glass ball 10
It is supposed to. Furthermore, since the glass ball 10 is pressed against the stopper portion 11 by gas pressure, the inner cylindrical packing portion 1 acts tightly by the internal pressure from the glass ball 10 and the external pressure from the inner surface of the bottle opening. The sealing performance and the retaining performance of the packing part 1 can be improved.

When a ring-shaped projection 6 is provided on the annular portion 2, the height of the bottle can be absorbed by the projection 6, and the gap between the bottle 2 and the upper end surface of the bottle can be sealed.

[0023]

The effects of the present invention configured and operating as described above are enumerated below. First,
Since the spout has a simple shape, it can be manufactured at a low cost and can reduce the resistance at the time of tapping even if a hard synthetic resin is used. Further, by pressing the glass ball into the straight portion of the cylindrical packing portion, the glass ball can be securely held and prevented from falling off. Furthermore, the press-fitted portion of the glass ball slightly expands the diameter of the tapered press-fitted portion to the outside, and is tightly pressed against the inner surface of the bottle mouth. Furthermore, since the glass ball is pressed against the stopper portion by the gas pressure in the bottle, the cylindrical packing portion works tightly and freely, and the sealing and retaining can be more reliably performed. In addition, since a ring-shaped protrusion is provided at the upper end of the inner surface of the bottle mouth, the protrusion cuts into the root of the press-fitting portion, so that the sealing effect and the retaining property are further improved. can get. Also, steps
The edge of the part ensures that gas escapes from around the glass ball.
Indeed, it can be prevented.

[Brief description of the drawings]

FIG. 1 is a half sectional view showing one embodiment of the present invention.

FIG. 2 is a top view of the embodiment.

FIG. 3 is a half sectional view showing a state in which the bottle is mounted on a ramune bottle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Inner cylindrical packing part 2 Annular part 3 Outer cylindrical cap part 4 Opener insertion hole 5 Engagement part 6 Projection part 10 Glass ball 11 Stopper part 12 Straight part 13 Step 14 Gap 15 Insertion part 16 Connection part 17 Connection Part 18 Press-fit part 20 Ramune bottle 21 Bottle mouth 22 Groove 23 Projection

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B65D 39/06 B65D 41/28 B65D 51/14

Claims (4)

(57) [Claims] 1. An outer cylindrical cap having an inner cylindrical packing portion which is preliminarily loaded with a glass ball and press-fitted into an inner surface of a bottle mouth, and an engaging portion which engages with a groove on an outer surface of the bottle mouth. And a stopper which is integrally connected to the bottle mouth through an upper annular portion so as to be able to be plugged into the mouth of the bottle, wherein the stopper is integrally formed by injection molding of a hard synthetic resin, The inner surface of the inner cylindrical packing portion of the spout,
A stopper having a tapered surface, a curved surface, or a stepped shape connected to the inner surface of the upper opening member insertion hole so as to prevent the glass ball from coming off, and a straight press-fitting the glass ball connected to the stopper. And an outer surface portion of the inner cylindrical packing portion, a tapered insertion portion formed so as to have a gap between the inner surface of the bottle mouth, and a connecting portion connected to the insertion portion. The outer diameter is almost equal to the inner diameter of the bottle mouth,
Or, while being formed slightly larger than the inner diameter of the bottle mouth,
A spout for a ramune, characterized by being formed by a reverse-tapered press-fit portion formed so as to have a slightly smaller diameter over a connecting portion with the annular portion. 2. An outer cylindrical cap having an inner cylindrical packing portion which is preliminarily loaded with a glass ball and press-fitted into the inner surface of the bottle mouth, and an engaging portion which engages with a groove on the outer surface of the bottle mouth. And a stopper which is integrally connected to the bottle mouth through an upper annular portion so as to be able to be plugged into the mouth of the bottle, wherein the stopper is integrally formed by injection molding of a hard synthetic resin, The inner surface of the inner cylindrical packing portion of the spout,
A stopper having a tapered surface, a curved surface, or a stepped shape connected to the inner surface of the upper opening member insertion hole so as to prevent the glass ball from coming off, and a straight press-fitting the glass ball connected to the stopper. And an outer surface portion of the inner cylindrical packing portion, a tapered insertion portion formed so as to have a gap between the inner surface of the bottle mouth,
The outer diameter of the connecting portion connected to the insertion portion is formed to be substantially equal to the inner diameter of the bottle mouth, or slightly larger than the inner diameter of the bottle mouth, and formed to be slightly smaller in diameter at the connecting portion with the annular portion. And a protrusion that presses against an upper end surface of the bottle mouth is formed in an inner surface of the annular portion in an annular shape. 3. An inner surface of a stopper portion of an inner cylindrical packing portion of the plug has a step portion at a connecting portion connected to an inner surface portion of a stopper insertion hole, and a stepped portion is provided at a protruding end of the step portion. The ramune spout according to claim 1 or 2, wherein a hanging rib-shaped edge is provided around the ramune spout. 4. A ramune bottle characterized in that the ramune bottle stopper according to claim 1 is attached to a ramune bottle provided with an annular projection at an upper end portion of an inner surface of the bottle mouth.