JP3021231U - Ramune bottle cap structure - Google Patents

Abstract

(57) [Abstract] (Correction) [PROBLEMS] In a Ramune bottle cap structure, enhancing the sealing performance for gas-tight sealing, making it possible to easily mount a sphere, and spheres due to impact during handling, etc. To prevent disengagement, reduce material costs and prevent reuse. A cap 1 includes a cap body 10, a holder 20, a sphere 30, and a packing member 40, and the holder 20 includes an annular portion 21, a flange portion 22, and a sphere holding portion 2.
4, and the sphere holding portion 24 has a connecting portion 25 that receives the lower end of the sphere 30 and three holding pieces, and the connecting portion has a breaking portion that breaks when the sphere 30 is hit inwardly of the bottle. Are formed.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a cap structure in which a cap holding a sphere is inserted into a bottle mouth of a Ramune bottle.

[0002]

[Prior art]

 Conventionally, as a structure that seals the bottle mouth of a Ramune bottle with a glass sphere, in the manufacturing process of a Ramune bottle, put the glass sphere inside the bottle and reheat the bottle mouth to reduce the diameter. A structure in which the internal gas pressure is sealed by a packing member mounted in the inner circumferential groove of the bottle and a sphere, and as shown in FIG. 4 of Japanese Utility Model Laid-Open No. 62-171444, it is engaged with the bottle opening. A structure in which a packing member is fixed with a cap member and a glass sphere is pressed against the packing member by an internal gas pressure to seal the glass sphere has been adopted. When these sealing structures are adopted, after filling the liquid in the Ramune bottle, turn the Ramune bottle upside down to position the sphere at the sealing position, or put the Ramune bottle upside down and place it in the Ramune bottle. Since the liquid must be filled, the filling process becomes complicated.

Therefore, there has been proposed a Ramune bottle cap structure in which a glass sphere is held in advance in a cap, and a bottle mouth is capped with a liquid after filling the Ramune bottle with liquid. For example, in Japanese Utility Model Laid-Open No. 62-171444, a cap body (spout member) that is engaged with the outer peripheral surface of the bottle mouth portion of a Ramune bottle, and a cap body that is internally fitted and held by the cap body is provided. The packing member to be fitted inside and the skirt part that integrally extends from the lower end of the packing member and holds the sphere, which is divided into four in the circumferential direction by four slits, are held in the skirt part. There is described a Ramune bottle cap structure in which a glass sphere is brought into contact with the inner peripheral portion of the lower end of the cylindrical portion of the packing member and sealed.

Further, in Japanese Utility Model Laid-Open No. 2-8742, a hard resin cap main body that is engaged with the outer peripheral surface of the bottle mouth portion of the Ramune bottle, and an annular portion integrally fitted and held in the cap main body. In this case, an inner cylinder made of a soft resin to be fitted in the bottle mouth portion and a glass sphere held in the cylindrical sphere holding portion of this inner cylinder are provided, and in order to strongly hold the sphere, A ramune bottle cap structure has been proposed in which a thick-walled projection is integrally formed on the lower side of the sphere holding portion, and a plurality of gas vent grooves are formed on the inner surface of the projection.

[0005]

[Problems to be solved by the device]

 Since the sphericity of the glass sphere is considerably low, there is a problem that it is difficult to secure gas tightness with the conventional Ramune bottle cap structure. That is, in the cap structure of the former publication, if the cap member is made of a soft resin in order to improve the sealing performance, the rigidity of the skirt portion of the packing member decreases, so it is difficult to secure the final sealing performance. become. On the other hand, if the cap member is made of hard resin, the sphericalness of the sphere is low, so the space between the cylinder member and the sphere cannot be completely sealed, and the carbon dioxide gas gradually leaks from inside the bottle, resulting in a defective product. turn into.

In the cap structure of the latter publication, the cap body is made of a hard resin and the inner cylinder is made of a soft resin, and the inner cylinder is molded integrally with the cap body after molding, which complicates the molding process. To do. In addition, since the annular groove is formed on the top surface of the bottle mouth, the bottle mouth of the Ramune bottle needs to have a special structure. In particular, the rubber packing member for sealing the sphere is not provided, and the maximum diameter portion of the sphere is elastically fitted to the sphere holding portion of the inner cylinder to seal the gas tightly. Since the sphericity is quite low, it is difficult to secure the sealing performance for gas-tight sealing.

Further, since the opening at the upper end of the inner cylinder has a smaller diameter than that of the sphere, when fitting the sphere into the sphere holding portion of the inner cylinder, it is necessary to climb over the projection from the opening on the projection side and mount it in the sphere holding portion. Therefore, it is not easy to attach the sphere. Moreover, since the sphere holding portion is formed in a thick-walled cylindrical shape and the thick-walled projection is formed at the lower end portion, a large amount of resin material for the inner cylinder is required, which is disadvantageous in terms of material cost.

The object of the present invention is to improve the sealing performance of gas-tight sealing in a Ramune bottle cap structure, to make it easy to mount a sphere, and to prevent the sphere from coming off due to impact during handling, etc. Prevention, reduction of material cost, prevention of reuse, etc.

[0009]

[Means for Solving the Problems]

 The cap structure for a Ramune bottle according to claim 1, wherein the cap holding a spherical body is plugged into the bottle mouth portion of the Ramune bottle, wherein the cap has an outer cylindrical portion that is engaged with an outer peripheral surface of the bottle mouth portion. It has a cap body made of hard synthetic resin, a holder made of hard synthetic resin that is internally fitted and held in the cap body, a sphere held by the holder, and a gas-tight portion in the middle of the upper half of the sphere. An annular packing member made of rubber sandwiched between the holder and the cap body is provided, and the holder is fitted in the bottle mouth in a compressed and gas-tight manner and holds the outer surface of the maximum diameter portion of the sphere. An annular part, a flange part that is sandwiched in a gas-tight manner between the top surface of the bottle part and the flange retainer part of the cap body, and a sphere holding part that connects to the lower end of the annular part and holds the lower half of the sphere. Integrally formed, The body holding portion includes a connecting portion that receives the lower end of the sphere, and a plurality of flexible holding pieces that extend from the connecting portion and curve along the surface of the lower half of the sphere and that are connected to the lower end of the annular portion. An opening is formed between the holding pieces, and a rupture portion is formed at the connecting portion so that the sphere ruptures when hitting the bottle inward and allows the sphere to fall.

In the state where the Ramune bottle is filled with the liquid, the gas pressure in the bottle acts on the holder, and the gas pressure acts on the sphere through the opening between the holding pieces of the holder. However, the outer cylinder portion of the cap body is engaged with the outer peripheral surface of the bottle mouth portion of the Ramune bottle, and the holder and the packing member are supported by the cap body, so that they cannot come off from the bottle mouth portion. The annular part of the holder is compressed and gas-tightly fitted in the bottle mouth, and the flange part of the holder is gas-tightly sandwiched between the top face of the bottle mouth and the flange retainer part of the cap body. Gas does not leak from the holder to the bottle. The rubber ring-shaped packing member is sandwiched between the holder and the cap body so as to receive the middle of the upper half of the sphere in a gas-tight manner, and the gas pressure acts on the sphere. Gas does not leak from between.

The holder comprises a sphere holding portion for holding the lower half of the sphere, the sphere holding portion extending from the connecting portion for receiving the lower end of the sphere and extending along the surface of the lower half of the sphere. It is equipped with a plurality of flexible holding pieces that are curved and connected to the lower end of the annular portion, and the lower half of the sphere can be reliably held by the connecting portion and a plurality of flexible holding pieces, so that there is no impact during handling. The sphere does not come off even when the above acts. Since the opening is formed between the holding pieces of the holder, the gas pressure can be surely applied to the sphere. Further, since the upper end opening of the holder is formed larger than the sphere, the sphere can be easily attached to the holder from above.

Since the rupture portion that breaks when the sphere is hit inwardly of the bottle and allows the sphere to fall is formed in the connecting portion of the holder, the plurality of holding pieces are flexible. The sphere can be surely dropped through the striking, and when drinking ramune, the liquid flows to the bottle mouth side through the opening between the holding pieces. Further, since the holder has an annular portion, a flange portion and a sphere holding portion, and the sphere holding portion has a structure including a connecting portion and a plurality of flexible holding pieces, the holder can be made of a small amount of material. , The material cost can be reduced. After the cap structure is used, the broken part is broken, so it is possible to reliably prevent the reuse of the used cap structure.

[0013]

[Embodiment of device]

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 4, a cap 1 for plugging a bottle mouth of a Ramune bottle is composed of a cap body 10, a holder 20, a glass sphere 30, and a packing member 40. In addition, an opening tool 2 for hitting is optionally provided.

The cap structure including the cap 1 will be described. On the outer peripheral portion of the bottle mouth portion 3 of the Ramune bottle, an annular collar-shaped portion 3a and an annular engaging protrusion 3b located above the annular collar-shaped portion 3a are integrally formed. Has been formed. The cap body 10 is an integral unit made of hard synthetic resin, and the cap body 10 includes an outer cylinder portion 11 that is fitted onto the bottle mouth portion 3, and an annular curved wall portion 12 that is continuous with the upper end of the outer cylinder portion 11. From the inner cylindrical portion 13 that extends downward from the upper end of the curved wall portion 12 and has a smaller diameter than the spherical body 30, and between the outer cylindrical portion 11 and the inner cylindrical portion 13, the intermediate cylindrical portion 14 that extends downward from the curved wall portion 12 Become.

On the inner peripheral surface of the outer tubular portion 11, an engagement protrusion 11 a that engages with the engagement protrusion 3 b of the bottle mouth 3 is formed. A packing pressing portion 13a is formed at the lower end of the inner cylindrical portion 13. A flange pressing portion 14 a facing the top surface of the bottle mouth portion 3 is formed at the lower end portion of the intermediate tubular portion 14. The inner peripheral surface of the lower end portion of the intermediate tubular portion 14 is formed as a taper surface 14b whose diameter decreases toward the lower side.

The holder 20 is an integral part made of hard synthetic resin, and the holder 20 is fitted in the bottle mouth 3 in a gas-tight manner in a compressed manner and holds the outer surface of the maximum diameter portion of the sphere 30. 1, a flange portion 22 that extends outward from the upper end outer peripheral portion of the annular portion 21 and is sandwiched in a gas-tight manner between the top surface of the bottle mouth portion 3 and the flange pressing portion 14a, and rises from the inner peripheral portion of the flange portion 22. It has a cylindrical wall portion 23 and a spherical body holding portion 24 that extends from the lower end of the annular portion 21 and holds the lower half of the spherical body 30, and the packing member 40 is fitted between the upper surface of the annular portion 21 and the cylindrical wall portion 23. A packing fitting portion 20a having an L-shaped cross section is formed. The outer peripheral surface of the cylindrical wall portion 23 is formed as a tapered surface that engages with the tapered surface 14b.

The packing member 40 is an annular member made of synthetic rubber and is fitted in the packing fitting portion 24 and compressed and gas-tight between the packing pressing portion 13 a of the inner tubular portion 13 and the annular portion 21. The packing member 40 is sandwiched, and is configured to receive the middle part of the upper half of the spherical body 30 in a gas-tight manner and seal it.

The sphere holding portion 24 of the holder 20 includes a connecting portion 25 that receives the lower end of the sphere 30 from below and a lower end of the annular portion 21 that extends from the connecting portion 25 and curves along the surface of the lower half of the sphere 30. Has three thin and flexible holding pieces 26 connected to each other and a breaking portion formed in the connecting portion 25. The three holding pieces 26 are radially arranged at intervals of 120 degrees in the circumferential direction in a plan view, and each holding piece 26 is formed in a band shape with a width of about 1.5 mm and a thickness of about 1.0 mm. A fan-shaped opening 27 having an opening angle of about 120 degrees is formed between the holding pieces 26 in plan view.

The fractured portion of the connecting portion 25 breaks when the sphere 30 is hit inwardly of the bottle to allow the sphere 30 to fall, and is provided on the outer side of the circular hole 25 a formed in the connecting portion 25. It is composed of a narrow portion 25b at a point. The opening tool 2 is for opening a ramune when it is drunk, and is composed of a main opening tool body 4 made of hard synthetic resin and an auxiliary ring 5 made of hard synthetic resin. The body 4 of the opening implement has a tubular portion 4b integrally formed on the lower surface side of the top plate portion 4a, and the tubular portion 4b is inserted into the upper end portion of the bottle mouth portion 3. The auxiliary ring 5 is loosely fitted on the cylindrical portion 4 and positioned on the cylindrical portion 4b by thin pieces 5a at positions equally divided into three parts on the circumference. The auxiliary ring 5 includes a top plate portion 4a and a cap body 10. After being capped between the tops and capped, the cap body 10, the auxiliary ring 5, and the body of the opening tool 4 are covered with a cylindrical cover 6 made of a heat-shrinkable synthetic resin and heated, so that the opening tool 2 is capped. It is fixed at 1. The opening tool 2 is not essential and may be omitted.

The operation and effect of the cap structure of the Ramune bottle described above will be described. The cap 1 is preliminarily configured to have the structure shown in FIG. 3 independently of the bottle mouth part 3 and the cap opening tool 2. At that time, the sphere 30 is attached to the holder 20, and then the packing member 40 is attached. Then, the cap 1 can be assembled by fitting the cap body 10 to the holder 20 and the packing member 40. When the sphere 30 is mounted, the opening at the upper end of the holder 20 is larger than the sphere 30, so that the sphere 30 can be easily mounted from above the holder 20.

The cap 1 is plugged into a bottle mouth 3 of a Ramune bottle filled with liquid, the bottle mouth 3 is sealed in a gas-tight manner with the cap 1, and then the cap 1 is attached with a cap 2 It is mounted as possible and then the tubular cover 6 is mounted. When capping, the cap can be capped by elastically deforming the annular portion 21 of the holder 20.

As shown in FIG. 3, when the cap is plugged, the engaging protrusion 3 a of the cap body 10 is engaged with the engaging protrusion 3 b of the bottle mouth 3, and the cap body 10 is closed. It will not come off from the mouth 3. The annular portion 21 of the holder 20 is fitted into the bottle mouth portion 3 in a compressed and gas-tight manner, the flange portion 22 is sandwiched between the top surface of the bottle mouth portion 3 and the flange pressing portion 14b, and the packing member 40 is ring-shaped. It is sandwiched between the part 21 and the packing pressing part 13a, and the packing member 40 receives the middle part of the upper half of the sphere 30 in a gas-tight manner and seals it, and the gas pressure in the bottle passes through the opening 27. It acts on the sphere 30.

Therefore, the holder 20 and the packing member 40 are fixed to the bottle mouth portion 3 by the cap body 10 and never come off. The gas pressure acts on the holder 20, and the gas pressure also acts on the sphere 30, but the annular portion 21 and the flange portion 22 completely seal the gap between the holder 20 and the bottle portion 3 in a gas-tight manner. Further, the space between the holder 20, the cap body 10 and the surface of the spherical body 30 is completely sealed in a gas-tight manner by the packing member 40.

Further, when the cap is not opened, the position of the cap opening main body 4 is regulated by the auxiliary ring 5 and does not move below the position shown in FIGS. It will not be opened even if is activated. When opening the cap, the cap body 4 and the auxiliary ring 5 are removed from the bottle opening 3, the auxiliary ring 5 is removed from the cap opening body 4, and then the tubular portion 4b of the cap opening body 4 is bottled. Insert it into the mouth portion 3 and bring the lower end of the tubular portion 4b into contact with the spherical body 30, strike the top plate portion 4a downward, strike the spherical body 30 downward with the tubular portion 4b, and break the fractured portion. The sphere 30 is dropped.

Since the holder 20 is formed with the annular portion 21, the flange portion 22, and the sphere holding portion 24, and the sphere holding portion 24 is formed with the connecting portion 25 and three or more holding pieces 26, the lower half of the sphere 30 is formed. The portion can be securely held by the connecting portion 25 and the holding piece 26, and the sphere 30 does not come off by the impact during handling. Further, since the connecting portion 25 and the holding piece 26 are thin and the width of the holding piece 26 is small, the synthetic resin material required for the holder 20 is small and the cost of the synthetic resin material can be reduced.

The sphere 30 can be surely dropped into the bottle through the breakage of the breakage portion formed in the connecting portion 25. In addition, when the ramune is drunk, the holding piece 26 prevents the sphere 30 from returning, so it is not necessary to form a pair of recesses for preventing the sphere 30 from returning in the ramune bottle, and the ramune is drunk. At this time, the breaking portion of the connecting portion 25 is broken, so that it is possible to reliably prevent reuse of the used cap 1.

Explaining an example in which the above embodiment is partially modified, the inner cylinder portion 13 and the intermediate cylinder portion 14 of the cap body 10 may be formed in a solid shape instead of a cylindrical shape, and the holder 20 The holding pieces 26 of the spherical holding portion 24 may be formed in a slender trapezoidal shape (the upper side is wide and the lower side is narrow) instead of the parallel strips on both sides, and the number of the holding pieces 26 is limited to three. Alternatively, the number of holding pieces 26 may be four or more, and the number of holding pieces 26 may be two if the width of the holding pieces 26 is slightly increased. The fractured portion may be formed in the middle of each holding piece 26, or may be composed of three or less or three or more narrow portions.

[0028]

[Effect of device]

 As described above, according to the Ramune bottle cap structure of the present invention, the annular portion and the flange portion of the holder can surely seal the space between the holder and the bottle mouth in a gas-tight manner, and the packing member makes the spherical body. The outer surface side of the can be reliably sealed in a gas-tight manner. Also, when attaching the sphere to the holder, it can be easily attached from above. Also, the material cost for the holder can be reduced.

Since the annular portion, the flange portion and the sphere holding portion are formed on the holder, and the connecting portion and the plurality of holding pieces are formed on the sphere holding portion, the lower half portion of the sphere can be securely connected to the connecting portion and the holding piece. The sphere can be kept on its own, and the sphere will not come off due to impact during handling. At the time of opening the cap, the sphere can be reliably dropped into the bottle through the breaking of the breaking portion formed in the connecting portion. Further, when drinking Ramune, the breaking portion of the connecting portion is broken, so that it is possible to reliably prevent the reuse of the used cap structure.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of an essential part of a cap structure according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a vertical cross-sectional view of the cap structure.

FIG. 4 is a side view of the cap structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cap 3 Bottle part 10 Cap body 20 Holder 21 Annular part 22 Flange part 24 Sphere holding part 25 Connecting part 25b Narrow width part (breaking part) 26 Holding piece 27 Opening part 30 Sphere 40 Packing member

Claims (1)

[Scope of utility model registration request] 1. A cap structure for plugging a cap holding a sphere into a bottle mouth of a Ramune bottle, wherein the cap is made of a hard synthetic resin and has an outer cylinder portion engaged with an outer peripheral surface of the bottle mouth. A cap body, a holder made of hard synthetic resin that is fitted and held in the cap body, a sphere held by the holder, and a holder and a cap body that receive the middle part of the upper half of the sphere in a gas-tight manner. An annular packing member made of rubber sandwiched between the holder and the holder, wherein the holder is fitted in the bottle mouth in a compressed and gas-tight manner and holds the outer surface of the maximum diameter portion of the spherical body, and the bottle mouth. A flange portion which is sandwiched in a gas-tight manner between the top surface of the portion and the flange pressing portion of the cap body, and a spherical body holding portion which is continuous with the lower end of the annular portion and holds the lower half of the spherical body, wherein The sphere holder receives the lower end of the sphere. With a connecting part to stop
A plurality of flexible holding pieces extending from this connecting portion and curved along the surface of the lower half of the spherical body and continuing to the lower end of the annular portion, forming an opening between the holding pieces, and connecting portion The ramune bottle cap structure is characterized in that a rupture part is formed on the sphere, which breaks when the sphere is hit inward and allows the sphere to fall.