JPH05278752A - Cap for soda pop bottle formed as a unit - Google Patents

Abstract

PURPOSE:To prevent a glass marble held at the opening from falling off in a cap for a soda pop bottle and secure the sealing and also obtain an inexpensive cap without lack. CONSTITUTION:A cap of a soda pop bottle is made of hard synthetic resin and an inner cylindrical packing 1 and an outer cylindrical cap 3 are connected to each other to form a combined unit by an annular packing 4. And a receiver rib 6 of a glass marble 10 and a retaining rib 7 are provided in the glass marble holder 2 of the inner cylindrical packing. A seal 8 pressed in on the inner face of the bottle opening 12 is provided and a circular rib forcibly contacting the upper end face of the bottle opening is provided at the inner face of the annular packing and further, a fitting part fixing in a groove 14 of the outer face of the bottle opening is provided at the outer cylindrical cap.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a so-called spout for sealing a bottle mouth of a Ramune bottle, and more particularly to a integrally formed spigot for the Ramune bottle.

[0002]

2. Description of the Related Art Conventionally, a spout for a Ramune bottle has an inner cylindrical packing portion that holds a glass ball and is press-fitted into the inner surface of the bottle mouth, and an engaging portion that engages with a groove on the outer surface of the bottle mouth. The outer cylindrical cap part is configured separately (Jitsuko Sho 63-185)
No. 94, Japanese Utility Model Laid-Open No. 62-152939), or an outer cylindrical shape having an inner cylindrical packing part that holds a glass ball and press-fits into the inner surface of the bottle mouth, and an engaging part that engages with a groove on the outer surface of the bottle mouth. The cap part is constructed integrally (Shokai 55-12343)
No. 9 and No. 62-152939 (Shokai Sho 62-152939) are known. However, when the inner tubular packing part and the outer tubular cap part are configured separately, for example, the inner tubular packing part is made of plastic such as vinyl chloride, and the outer tubular cap part is made of aluminum or the like. Although there is an advantage that the material can be changed in consideration of the plug coming off and the sealing property, such as making it metal, the manufacturing process and the process of attaching the cap to the Ramune bottle have two types The disadvantage was great. Therefore, recently, the above-mentioned actual development 55-123
It has been proposed that the inner tubular packing portion and the outer tubular cap portion are integrally formed as in Japanese Utility Model Publication No. 439 and Japanese Utility Model Laid-Open No. 62-152939. When the inner cylindrical packing part and the outer cylindrical cap part are integrally formed, the upper parts of both parts are connected by a ring-shaped packing part, and the inner surface thereof is pressed against the upper end surface of the bottle mouth. In addition, as in Japanese Utility Model Laid-Open No. 62-152939, the glass ball is held in advance in the elastic holding portion connected to the inner tubular packing before plugging, so that the bottle inversion process after the injection and filling of the Ramune liquid can be performed. In addition to the omission, the idea of preventing collision between the glass ball and the inner surface of the bottle and preventing damage to the bottle is also shown.

[0003]

However, when the spout is integrally formed as described above, the resistance at the time of press-fitting the spout beyond the step portion formed on the outer periphery of the bottle mouth of the Ramune bottle is high. Therefore, it is necessary to make the material of the spout relatively soft. On the contrary, if the material of the spout is a soft material, the spout may come off and the sealing force may be reduced, which may reduce the reliability of the product. Further, according to the method in which the inner tubular packing part is made of a soft material and the outer tubular cap part is made of a hard material, the manufacturing process is complicated and not easy, and the manufacturing cost is increased. Furthermore, in the case where the inner tubular packing part and the elastic holding part are made of a soft synthetic resin as in Japanese Utility Model Laid-Open No. 62-152939,
There is a possibility that the spout may come off due to the pressure of the Ramune's liquid, and furthermore, since the elastic holding portion has a thin-walled cylindrical shape, the holding force is weak, and there is a risk that the glass ball may fall off before the stopper.
Further, there is an error that the upper surface of the bottle mouth is slightly higher or lower depending on the bottle, and in the case where the annular packing portion is a flat surface, it may not be possible to reliably press-fit the upper surface of the bottle mouth at the time of stoppering.

The present invention has been made in order to solve the above problems, and uses a hard material to prevent the stopper from coming off, reduce the resistance at the time of stoppering, and secure the glass ball. The purpose of the invention is to obtain an integrally formed spout for Ramune bottles, which is held in place and secures the seal.

[0005]

In order to achieve the above object, the spout according to the present invention has a structure in which an inner cylindrical packing portion and an outer cylindrical cap portion are integrally formed through an annular packing portion. , Entirely made of a hard synthetic resin, a glass ball holding part for preliminarily press-fitting and elastically holding a glass ball, and a receiving rib part continuous with an opening for inserting a stopper having an inner diameter smaller than the glass ball,
A holding rib part that holds the position slightly below the center of the glass ball, a seal part that is press-fitted on the upper part of the inner surface of the bottle mouth, and a circular rib part that presses against the upper end surface of the bottle mouth is provided on the inner surface of the annular packing part. It is characterized by Further, the tip of the holding rib portion, that is, the contact portion with the glass ball may be formed in a pointed shape, and the tip of the circular rib portion, that is, the pressure contact portion with the upper end surface of the bottle mouth may be formed in a similarly pointed shape. Further, the outer cylindrical cap portion is screwed into the groove on the outer surface of the bottle mouth and mounted. Similarly to the holding rib portion, the tip of the receiving rib portion may be sharp, and a plurality of receiving rib portions having such a sharp tip may be provided. Further, the seal portion is formed in a skirt shape on the outer circumference of the glass ball holding portion via a cylindrical slit. A plurality of skirt-shaped seal portions may be provided so as to be pressed against the inner surface of the bottle mouth at a plurality of locations, and the glass ball holding portion may be enlarged by glass balls to assist the pressure contact force of the skirt-shaped seal portion. .

[0006]

[Function] This mouth plug is made of hard synthetic resin,
The spring property is good and the frictional resistance with the bottle is small. Therefore, even if the inner cylindrical packing part and the outer cylindrical cap part are integrally configured, the sliding resistance at the time of stoppering can be made relatively small. Further, the glass balls are press-fitted and held in advance in the glass ball holding portion before the stoppering, but by providing the holding rib portion in the holding portion, the press-fitted glass balls are surely prevented from falling off. After injecting and filling Lamune liquid into the bottle with this stopper, when it is press-fitted or screwed into the bottle mouth, the glass beads that are held in close contact with the glass ball holder will receive ribs due to the gas pressure of the Lamune liquid. The bottle mouth is sealed more closely by sealing the same, and the bottle mouth is sealed by crimping the seal portion provided on the upper portion of the glass ball holding portion. Furthermore, since a circular rib part is provided on the inner surface of the annular packing part, even if there is a slight height difference in the height of the upper end surface of the bottle mouth, the circular rib part absorbs the error of the height difference, and the inner tubular packing part Along with the sealing part of the, it achieves a double sealing action. In addition, the tip of the receiving rib is pressed with a glass ball that rises due to the gas pressure of the Ramune liquid,
Since it bends easily, it ensures a seal at this part. In the case of a skirt-shaped seal portion, it can be independently deformed by the cylindrical slit, so that the insertion resistance of this spout is reduced. In addition, the skirt-shaped sealing part ensures a reliable seal at the mouth of the bottle.

[0007]

【Example】

Example 1. 1 is a sectional view showing a first embodiment of the present invention, FIG.
FIG. 3 is an enlarged half sectional view of a main part. The first embodiment shows a case where the outer cylindrical cap portion of the spout is press-fitted and locked in a groove on the outer surface of the bottle mouth. This plug is a circle connecting the inner cylindrical packing part 1, the glass ball holding part 2 connected to the inner cylindrical packing part 2, the outer cylindrical cap part 3, and the upper part of the inner cylindrical packing part 1 and the outer cylindrical cap part 3. The annular packing portion 4 is integrally formed of the same hard synthetic resin. As a hard synthetic resin,
A material having a good spring property and a small frictional resistance with the material forming the Ramune bottle is used.

The inner tubular packing portion 1 has an opening opening 5 having a hollow portion having an inner diameter smaller than the diameter of the glass ball 10, a thin glass ball holding portion 2, and the opening opening 5 for opening the opening. A ring-shaped receiving rib portion 6 for receiving the upper portion of the glass ball 10 is provided at the connecting portion between the glass ball holding portion 2 and the glass ball holding portion 2, and a position slightly below the center of the glass ball 10 is held at the lower end of the glass ball holding portion 2. The holding rib portion 7 is provided in a ring shape. And the upper part of the glass ball holding part 2 is formed to be a little thicker,
This part is press-fitted into the upper part of the inner surface of the bottle mouth 12
Has become. The glass bead holding portion 2 provided at the lower portion of the seal portion 8 is formed to have a small diameter so that a small gap 9 is formed between the outer surface thereof and the inner surface of the bottle mouth. Further, it is preferable that the contact portion of the holding rib portion 7 with the glass ball 10 is formed in a mountain-like pointed shape.

Next, on the inner surface of the annular packing portion 4, as shown in FIG. 2, a small rib circular rib portion 11 is provided which is in pressure contact with the upper end surface 13 of the bottle mouth 12. It is preferable that the tip of the circular rib portion 11 is also formed in a mountain-like pointed shape similarly to the holding rib portion 7. Further, on the inner surface of the outer cylindrical cap portion 3 which is connected to the annular packing portion 4, an engaging portion 15 which is press-fitted into the groove 14 on the outer surface of the bottle mouth 12 is provided.

The mouth plug constructed as described above holds the glass ball 10 in a state of being press-fitted into the glass ball holding portion 2 in advance,
After injecting and filling the bottle with ramune, it is press-fitted into the bottle mouth 12 by a stoppering machine (not shown). Engagement portion 1 of outer cylindrical cap portion 3
5 slides while expanding to the outside, and the groove 14 on the outer surface of the bottle mouth
The engaging portion 15 is fitted inside and locked. At the same time, the sealing portion 8 of the glass ball holding portion 2 presses and seals against the upper portion of the inner surface of the bottle mouth 12, and the circular rib portion 11 of the annular packing portion 4 is pressed against the bottle mouth upper end surface 13 for sealing. The glass ball 10 press-fitted into the glass ball holding portion 2 receives the gas pressure of the Ramune in the bottle and is further closely adhered and sealed by the receiving rib portion 6. Further, since the glass ball holding portion 2 is expanded outward by the pressure at that time, the crimping force of the seal portion 8 is increased and the sealing of this portion is surely smoothed. Further, since the tip of the circular rib portion 11 is pressed against the bottle upper end surface 13 in a pressed or crushed state, the sealing action of the seal portion 8 is doubled by the circular rib portion 11 to complete the seal. I am trying. Further, the circular rib portion 11 absorbs the height error of the bottle and seals it. Since this spigot is made of a hard synthetic resin, it has a good spring property and the sliding resistance at the time of tapping can be reduced. Further, since the glass ball 10 is held at a position slightly below the center of the glass ball 10 press-fitted by the holding rib portion 7 of the glass ball holding portion 2, the glass ball 10 can be completely prevented from falling off. Moreover, it is extremely easy to press fit the glass ball 10 into the glass ball holding portion 2.

Embodiment 2. FIG. 3 is a cross-sectional view showing a second embodiment of the present invention, in which the outer cylindrical cap portion 3 is provided with a groove 13 on the outer surface of the bottle mouth.
It shows the case where it is mounted by screwing into. Therefore, the engaging portion 15 is formed as a female screw so as to fit the screw groove 13 on the outer surface of the bottle mouth. Other configurations are the same as those in the first embodiment.

In the second embodiment, since the outer tubular cap portion 3 is screwed into the bottle mouth 12 and attached, the resistance at the time of capping can be eliminated and the circular shape can be eliminated as compared with the case where the stopper is press-fitted. The pressure contact force of the rib portion 11 can be kept constant by using a torque meter (not shown). The other operations are the same as those in the first embodiment.

Embodiment 3. 4 is a half sectional view showing a third embodiment of the present invention, and FIG. 5 is an enlarged half sectional view at the time of mounting. The difference from the first embodiment is that the receiving rib portion 6 has a sharp tip and the sealing portion 8 is separated from the glass ball holding portion 2 by a cylindrical slit 16.
The inner diameter of the glass bead holder 2 is slightly smaller than the outer diameter of the glass bead 10. When the glass ball 10 rises due to the gas pressure of the Lamune's liquid when the mouth plug is attached, the glass ball 10 is pressed against the sharp end of the receiving rib portion 6 to bend the receiving rib portion 6, so that even if the glass ball is slightly deformed, Ensures a tight seal over the entire area. Further, since the skirt-shaped seal portion 8 is pressed at the mouth portion of the bottle mouth 12 and can be deformed independently of the glass bead holding portion 2, the seal at this portion is reliable and the insertion resistance can be reduced.

Example 4. 6 is a half sectional view showing a fourth embodiment of the present invention, and FIG. 7 is an enlarged half sectional view at the time of mounting. In the fourth embodiment, the receiving rib portion 6 having a point and the skirt-shaped seal portion 8 are provided.
Is different from the third embodiment in that two are provided respectively. As the glass ball 10 rises due to the gas pressure, the outer diameter of the glass ball holding portion 2 expands to some extent, the gap between the cylindrical slits 16 disappears, and the skirt seal portion 8 comes into close contact with the outer circumference of the glass ball holding portion 2. For this reason, since the skirt-shaped seal portion 8 is pressed against the inner surface of the bottle mouth at two places,
The sealing power increases. Further, the receiving rib portion 6 also comes into close contact with the glass ball 10 at two places, and the seal becomes more reliable.

[0015]

The effects of the present invention, which are constructed and operate as described above, are listed below. First,
A stopper for a Ramune bottle can be manufactured at low cost, and the resistance at the time of stoppering can be reduced even if a hard synthetic resin is used.Furthermore, it has a structure with a glass ball holding part. Even so, the plug will be reliably prevented from coming off. Also,
It is possible to reliably hold the glass ball press-fitted into the holding rib portion of the glass ball holding portion and prevent the glass ball from falling off. In addition, the sealing effect is ensured because both the sealing action of the sealing part formed on the glass ball holding part against the inner face of the bottle mouth and the sealing action by the pressure contact with the upper end face of the bottle mouth by the circular rib part of the annular packing part are ensured. At the same time, the circular rib can absorb the dimensional error of the bottle mouth. Further, by making the tip of the receiving rib portion sharp, the adhesion to the glass ball is improved, and the sealing property of this portion can be ensured. Furthermore, by adopting a skirt-shaped seal part, it can be deformed independently, which reduces insertion resistance of the mouth plug and
The effect that a reliable seal can be made at the mouth of the bottle mouth is also obtained.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a first embodiment of the present invention.

FIG. 2 is an enlarged half sectional view of a main part.

FIG. 3 is a cross-sectional view showing a second embodiment of the present invention.

FIG. 4 is a half sectional view showing a third embodiment of the present invention.

FIG. 5 is an enlarged half sectional view of the third embodiment when mounted.

FIG. 6 is a sectional view showing Embodiment 4 of the present invention.

FIG. 7 is an enlarged half sectional view of the fourth embodiment when mounted.

[Explanation of symbols]

 1 Inner Cylindrical Packing Section 2 Glass Ball Holding Section 3 Outer Cylindrical Cap Section 4 Annular Packing Section 5 Opening Tool Insertion Hole 6 Receiving Rib Section 7 Holding Rib Section 8 Seal Section 10 Glass Ball 11 Circular Seal Section 12 Bottle Mouth 14 Groove 15 Engagement portion 16 Cylindrical slit

Claims (9)

[Claims] 1. An outside having a glass ball holding portion for holding a glass ball, an inner cylindrical packing portion to be inserted into an inner surface of a bottle mouth, and an engaging portion engaging with a groove on an outer surface of the bottle mouth. In a spigot in which a tubular cap part is integrally connected through an annular packing part, the whole is made of a hard synthetic resin, and the glass ball holding part is connected to an opening for inserting a stopper having an inner diameter smaller than that of a glass ball. It has a receiving rib part, a holding rib part that holds the glass ball at a position slightly lower than the center, and a seal part that is press-fitted to the upper part of the inner surface of the bottle mouth, and the annular packing part is pressed against the upper end surface of the bottle mouth. As described above, an integrally formed spout for a Ramune bottle having a circular rib portion formed on the inner surface of the annular packing portion. 2. The contact portion of the holding rib portion with the glass ball is formed in a pointed shape.
The integrally formed spout for a Ramune bottle. 3. The integrally formed spout for a Ramune bottle according to claim 1, wherein a pressure contact portion of the circular rib portion with an upper end surface of the bottle mouth is formed in a pointed shape. 4. The integrally formed spout for a Ramune bottle according to claim 1, wherein the outer cylindrical cap portion is mounted in a groove on the outer surface of the bottle mouth with a screw. 5. The contact portion of the receiving rib portion with the glass ball is formed in a pointed shape.
An integrally formed spout for a Ramune bottle. 6. The spout for a Ramune bottle integrally formed according to claim 5, wherein a plurality of contact portions of the receiving rib portion with the glass beads are provided. 7. The stopper for a Ramune bottle integrally formed according to claim 1, wherein the seal portion is provided on the outer circumference of the glass ball holding portion via a cylindrical slit. 8. The integrally formed spout for a Ramune bottle according to claim 7, wherein the seal portion is formed in a plurality of skirts so as to be pressed against the inner surface of the bottle mouth at a plurality of points. .. 9. The integrally formed Ramune bottle according to claim 8, wherein the inner diameter of the glass bead holding portion is made smaller than the outer diameter of the glass bead to assist the pressure contact force of the sealing portion. Mouth plug.