JPH09156652A - Stopper used for cap of lemonade bottle and lemonade bottle cap holding the stopper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To heighten a seal effect with the aid of a stopper when a bottle is sealed, make a content liquid in the bottle easier to drink after unsealing the bottle, and reduce a manufacturing cost by reducing inaccuracy of each of a bore diameter of the interior of a cap and a diameter of the stopper. SOLUTION: A cap comprises an outer cylinder 1 whose inner face is brought into contact with an outer face of a bottle mouth 6 when the bottle is sealed, an inner cylinder 2 which is brought into close contact with an inner face of the bottle mouth 6 at the same time, and a holding cylinder 4 which is spaced via a cavity 3 for absorbing stress from the inner cylinder 2 and is brought into contact with a stopper C, these cylinders being formed of a synthetic resin into one body. A plurality of ring- shaped contact protrusions 9 are provided on an inner face of the holding cylinder 4. On the other hand, the stopper C made of a synthetic resin, whose total specific gravity is made smaller than one so that the stopper C floats, is formed into a non- spherical shape having a cylindrical face 14 at a part of a sphere, so that a content liquid can be drunk up through a gap between the stopper and an opening of the cap holding cylinder 4 even under the condition where the stopper has returned to a mouthpiece of the bottle again after unsealing the bottle. Further, the stopper has a recess 12 formed therein.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cap used for a Ramune bottle cap made of a synthetic resin material and a Ramune bottle cap that holds the plug.

[0002]

2. Description of the Related Art In recent Ramune bottles, in order to simplify the filling work and reduce the manufacturing cost, a cap holding a spherical body (spherical stopper) is capped on the bottle mouth of the Ramune bottle after filling the content liquid. A manufacturing method of capping with a machine is generally used, and in order to have a structure of a cap that can withstand impact at the time of capping with the capping machine, for example, a Ramune bottle shown in Japanese Utility Model Publication No. 2-8742. As described above, there is disclosed a technique in which the vicinity of the sphere holding portion is made of a soft resin material, and the outer side of which is fitted into the bottle mouth portion is integrally formed of a hard resin material.

On the other hand, inside the cap which is hermetically sealed at the bottle mouth of the Ramune bottle, a capping sphere made of a glass material in advance projects downward in order to prevent it from falling. It is housed so as to be freely movable between the protrusion and the upper annular protrusion protruding inward to prevent leakage of the content liquid after filling.

At the time of automatic assembly, after the content liquid is filled in the Ramune bottle, the sphere is pressed against the upper annular protrusion by the internal pressure in the bottle with the cap capped at the bottle mouth. When the state is maintained and the cap is opened to drink the content liquid, the spherical state is forcibly pushed inward to release the sealed state and the cap is opened.

[0005]

In the above-mentioned prior art, the accuracy of the bottle mouth and the sphere formed of glass is usually limited, and a certain error occurs. The error does not cause a problem for ordinary bottles other than the Ramune bottle, but in the case of the Ramune bottle, the errors of the diameter of the bottle mouth and the diameter of the sphere add up and affect each other. As a result, as a result, it becomes a hard closed state that is extremely difficult to open, or conversely a loose closed state, and like when left in the environment of the vehicle heated by sunlight,
If the internal pressure in the Ramune bottle rises abnormally, the content liquid may leak.

In order to solve the above-mentioned problems, as shown in Japanese Utility Model Laid-Open No. 2-8742, the vicinity of the sphere holding portion is made of a soft resin material, and the outer periphery thereof is made of a hard resin material. Although the technique of integrally molding is disclosed, there is a problem in that the production thereof involves high cost.

On the other hand, when the content liquid in the bottle is drunk from the bottle mouth after opening, since the spherical stopper held inside the cap is located in the liquid passage in the cap, the passage of the liquid is interrupted. There is a problem that the area is narrowed to make it difficult to drink the content liquid and that the liquid passage in the cap is closed by the spherical stopper while drinking.

The present invention solves the problems of the prior art in which the cap is made of resin and the glass spherical stopper is housed therein, and the inside diameter of the cap and the diameter of the stopper are respectively solved. It is used for the Ramune bottle cap that reduces the error of the bottle cap, enhances the sealing effect of the stopper body at the time of assembling the cap, makes it easy to drink the liquid content of the bottle after opening the cap, and facilitates the manufacturing to reduce the manufacturing cost. An object of the present invention is to provide a stopper and a Ramune bottle cap that holds the stopper.

[0009]

In order to solve the above-mentioned problems, the invention of claim 1 seals the bottle mouth portion of a Ramune bottle with a cap made of a synthetic resin material, and the inside of the cap is sealed. A plug body to be held for capping is characterized in that the plug body is made of a synthetic resin material and the specific gravity of the whole plug body is smaller than 1.

Further, according to a second aspect of the present invention, the stopper body held inside the cap made of the synthetic resin material for capping is made of the synthetic resin material, and the spherical body is partially crushed to form a non-sphere. It is characterized by being shaped.

Further, the invention according to claim 3 is characterized in that the sphere is partially crushed to be an aspherical body, and at least a part thereof has a cylindrical surface, and the cylindrical surface portion allows the inner diameter liquid of the cap to be closed. The feature is that the passage is closed.

According to a fourth aspect of the present invention, the above-mentioned plug body in which a spherical body is partially crushed to be an aspherical body is formed by removing a part of a spherical surface, and forming a recessed part in which the inside is hollowed out. It is characterized by being formed.

Further, the invention of claim 5 is characterized in that the plug body is made of a synthetic resin material, and is a cylindrical body having a recessed part formed in one end face thereof.

According to a sixth aspect of the present invention, there is provided a Ramune bottle cap in which the bottle mouth portion of the Ramune bottle is sealed by a cap that holds a stopper body for closing the inside. An outer cylinder that contacts the outer surface of the bottle, an inner cylinder that is in close contact with the inner surface of the bottle mouth, and a holding cylinder that is provided inside the inner cylinder with a space for stress absorption separated and the inner surface contacts the plug body. A synthetic resin material is integrally formed, and a plurality of annular contact protrusions are provided on the inner surface of the holding cylinder, and the contact protrusions are brought into contact with the cylindrical surface portion of the non-spherical plug body made of the synthetic resin material. It is characterized by being configured as follows.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the present invention will be described with reference to an embodiment shown in the drawings. FIG. 1 is a cross-sectional view showing a state in which a bottle mouth portion of a Ramune bottle is stoppered, showing an embodiment of the present invention, and FIG. 2 shows a state in which a stopper body is opened from a cap in FIG. It is sectional drawing shown.

In FIG. 1, A is a cap body of a Ramune bottle, which is integrally formed of a relatively hard single synthetic resin material. The cap body A has an inner surface indicated by a chain line when closed. The outer cylinder 1 that wraps around the outer periphery of the bottle mouth portion of the illustrated Ramune bottle B and comes into contact with the outer surface thereof, the inner cylinder 2 that is in close contact with the inner surface of the bottle mouth portion through the ring-shaped projection 2a, and the inside of the inner cylinder 2 In addition, a holding cylinder 4 that is in contact with the plug C with a space (gap) 3 for absorbing stress is provided integrally.

The outer periphery of the outer cylinder 1 has a shape that is gently rounded so that the mouth of the user directly contacts it.
A drinking mouth 5 is formed in the center part on the tip end side, and the inner diameter side is formed in a shape corresponding to the bulge 6a provided on the tip end part of the bottle mouth 6, and at the time of stoppering, the elastic force of the synthetic resin material is formed. By overcoming the bulge 6a against the
Is abutted against the ring-shaped protrusions 1a and 1b formed inside the outer cylinder 1 and strongly engaged with the main body A.

The inner cylinder 2 is formed so as to extend from the inner peripheral position of the ring-shaped convex portion 1b formed inside the outer cylinder 1 toward the bottle side to a position beyond the ring-shaped convex portion 1a. And a plurality of (3 in the figure) ring-shaped projections 2a having a sufficient thickness for contacting the inner peripheral side of the bottle mouth 6 in a sealed state are provided at equal intervals, whereby a relatively hard synthetic resin material is provided. Despite being constituted by, the sealability between the Ramune bottle B and the cap A is maintained by being crimped onto the inner surface of the bottle mouth 6.

Further, the holding cylinder 4 provided along the inner circumference of the inner cylinder 2 with the space 3 therebetween is connected to the drinking mouth 5 on the outer side, and the drinking mouth 5 and the holding cylinder 4 are connected to each other. An edge portion 7 having a sharp tip portion that protrudes inward in the radial direction is provided at the boundary of. On the other hand, the bottle-side end of the holding cylinder 4 extends to the vicinity of the lower end of the outer cylinder 1, and is provided with a plug holding portion 8 so as to hold the plug C, and the edge portion 7 and A plurality of (two in the figure) annular contact projections 9 that come into contact with the cylindrical surface portion of the plug body are provided in the middle portion of the plug body holding portion 8.

On the other hand, the plug C held by the holding tube 4 has a specific gravity smaller than 1 as a whole made of a synthetic resin material, the upper surface is formed by the spherical surface 11, and the lower surface is formed by the central portion. It is formed of an aspherical body formed by an annular spherical surface 13 except for the recessed portion 12 that is hollowed out to the extent that it does not penetrate to the upper surface portion formed in 1. and an intermediate portion formed by a cylindrical surface portion 14. In the figure, reference numeral 15 is a parting line that indicates a dividing line of a mating mold that is generated when molding the synthetic resin material.

Next, the operation will be described. At the time of automatic assembly of the Ramune bottle, the cap body C is held in the inside of the cap body A and capped at the bottle mouth 6 of the Ramune bottle B by the capping machine. At this time, the plug body C is In the state as shown in FIG. 1, that is, the cylindrical surface 14 of the plug C contacts the contact protrusion 9 provided on the inner surface of the cap holding tube 4, and the spherical surface 11 on the upper surface of the plug C is connected to the outer tube. 1 is abutted on the edge portion 7 provided on the inside of the drinking mouth 5 and the annular spherical surface 13 on the lower surface of the plug C is
It is in a state of being held in contact with the stopper body holding portion 8 at the lower end of the holding cylinder 4. At this time, the space 3 provided between the inner cylinder 2 and the holding cylinder 4 has a function of absorbing dimensional differences and the like of the bottle mouth 6 or the stopper C that are beyond the predetermined range. After the cap A is plugged into the bottle mouth 6, the upper surface 11 of the stopper C is pressed against the edge portion 7 with a strong force by the internal pressure in the bottle B to be sealed, and at the same time the cylindrical surface 14 of the stopper C is replaced. Contact protrusion 9 of the holding tube 4
It contributes to the sealing by the contact with multiple points.

At this time, the recess 1 formed on the lower surface of the plug C
Since the internal pressure in the bottle acts on 2, the sealing action of the plug C can be maintained more stably. The parting line 15 formed as an annular protrusion on the circumferential surface of the plug C
Is located at an intermediate portion between the upper edge portion 7 and the lower plug body holding portion 8, so that the plug body sealing action is not affected.
Further, when the plug 12 is manufactured from a synthetic resin material, the recess 12 formed on the lower surface of the plug C facilitates the cooling action inside the material after molding due to the existence of the recess 12, and thus the distortion of the material. It has an action to prevent the occurrence.

On the other hand, when the cap is opened to drink the contents, the upper surface of the plug C in FIG. 1 is strongly pressed against the internal pressure,
The stopper C elastically deforms and rides over the stopper holder 8 at the lower end of the holding cylinder 4, and moves into the bottle B as shown in FIG. Since the content liquid is full in the bottle, the specific gravity of the stopper C that has moved into the bottle is 1 or less, so when the bottle is tilted obliquely upward to drink from the drinking mouth 5, as shown in FIG. In addition, since the plug C floats to the liquid surface, there is no object that blocks the inner diameter passage of the holding tube 4 of the cap body A leading to the drinking mouth 5, so that the content liquid D can be extremely smoothly discharged from the drinking mouth 5. You can drink. After the stopper is opened, even if the stopper returns to the drinking mouth again, the content liquid is swallowed through the gap between the peripheral surface of the aspherical stopper C and the opening at the lower end of the holding tube 4 of the cap body A. 5 flows inward, and the content liquid can be swallowed up without being resealed by the stopper.

In the above embodiment, the plug C is
The upper and lower surfaces have spherical portions 11 and 13, the middle portion has a cylindrical surface 14, and even after the stopper is opened, the cylindrical surface portion and the lower end opening are also close to the lower end opening of the holding tube 4. The aspherical structure configured to be able to drink up the content liquid through the gap between the parts has been described, but the spherical parts 11 on the upper surface and the lower surface while leaving the recess 12 in the embodiment (FIG. 1).
And 13 are formed in a continuous spherical shape, and are configured so as to eliminate the cylindrical surface 14 in the above-mentioned embodiment, and when the stopper body again approaches the lower end opening of the holding cylinder 4 after opening, the liquid content in the bottle is reduced. It is also possible to configure so as to pass through the opening of the lower end of the holding tube via the recess of the stopper and flow toward the drinking mouth 5. In this way, when the plug body is a sphere with the recess 12 left, the position of the parting line is likely to occur at an unspecified position. Therefore, even in such a case, if the concave portion 12 is provided in the spherical body and the plug body is positioned by the concave portion 12 and set in the cap, the parting line can be set without crossing the seal.

Further, it is possible to form the plug body with a cylindrical body while leaving the recess 12 left. In this case, the stopper C in the previous embodiment shown in FIG. 1 is equivalent to one in which the upper surface spherical surface 11 and the lower surface annular spherical surface 13 are removed, and instead both end edges are appropriately chamfered. When the stopper is closed, it is held by the edge portion 7 of the cap body A and the stopper body holding portion 8 to maintain the sealed state, and even after the stopper is opened, the stopper body returns to the drinking mouth again. From the gap between the surface and the lower end opening of the cap body A, the drinking mouth 5
There is no change in the flow of the content liquid toward.

Further, in the above-mentioned embodiment, the structure in which the specific gravity of the plug body is set to 1 or less has been described, but the plug body may be made of a synthetic resin material having a specific gravity of 1 or more. In this case, after opening the stopper, the stopper moves downward in the bottle due to gravity, so there is no problem in drinking the content liquid in the bottle, and even when the stopper returns to the drinking mouth again, As described above, the content liquid still flows toward the drinking mouth 5 through the gap between the stopper and the opening at the lower end of the holding cylinder.

By the way, since the cap body A and the plug body C are both made of synthetic resin, the cap body A and the plug body C can be freely colored by changing the color of the resin. . For example, by preparing two kinds of color of the stopper C, white and red, and providing the cap C of this color on the cap body A to be used, the color of the stopper released into the bottle when the cap is opened. It is possible to make various identifications by different colors. It is also possible to use it as a “lottery” by making the color of the plug C not easily understood until it is opened (for example, the red of the plug hits and the white of the plug is white). It can be lost).
In that case, in order to make the color of the plug C indistinguishable from the appearance at the time of sale, for example, the cap body is made of an opaque body, or the opaque outer skin is covered over the entire cap body. Obtained by

[0028]

As described above, according to the present invention,
According to the first aspect of the present invention, the bottle mouth of the Ramune bottle is sealed with a cap made of a synthetic resin material, and the cap is held inside the cap for closing the cap. The following effects can be obtained by using a material and by making the specific gravity of the entire plug body smaller than 1.

(I) The cap is made of a synthetic resin material,
Since the stopper is also made of a synthetic resin material, it is easy to improve the dimensional accuracy of both of them, especially the fitting portion during manufacturing. Leakage can be prevented, and since the stopper is made of a synthetic resin material, there is no danger of breakage as compared with the conventional glass stopper. That is, if the stopper is glass, it may be scratched or damaged by contact with the bottle.
It may lead to glass breakage. In order to solve this problem, a special cap with a structure that always holds the stopper below the Ramune bottle cap has been proposed so that the stopper does not fall into the bottle, but the stopper is a bottle. It loses the uniqueness of the Ramune bottle that it can roll freely inside.
In the present invention, even if the stopper can be freely moved within the stopper, there is no concern about the problems described above.

(Ii) Since the specific gravity of the whole stopper body is smaller than 1, when the Ramune bottle is tilted upward and drinking after opening, the stopper body floats above the liquid surface of the content liquid in the bottle. Since it is separated from the opening inlet of the cap, the liquid passage in the cap is not narrowed by the stopper, and it is extremely easy to drink.

Further, in the invention of claim 2, the plug body is made of a synthetic resin material, and the spherical body is an aspherical body partially crushed. In addition to the effect, the next effect, that is, when the stopper returns to the drinking mouth after opening, it is unlikely that the collapsed position of the stopper returns to the original position. If the orientation of the bottle is not the original state when opening the bottle, the stopper will not be closed again due to the suction action of the drinker or the gas pressure in the bottle, and the opening that appears in the crushed part It is possible to drink up the content liquid without remaining in the bottle through the gap.

According to the third aspect of the present invention, a plug body in which a sphere is partially crushed to form a non-spherical body has a cylindrical surface at least in part, and the cylindrical surface portion allows the inner diameter liquid of the cap to be closed. By configuring the passage to be closed, the effect according to the invention of claim 2, that is, in the state where the stopper returns to the drinking mouth after opening, the inside of the bottle is removed from the gap formed in the cylindrical surface portion of the stopper. In addition to the effect that all the content liquid can be drunk up, when manufacturing using a synthetic resin material, a parting line that occurs as a dividing line of the mating mold can be formed on the cylindrical surface, which allows The capping direction can be easily determined during automatic assembly, and
It is possible to avoid deterioration of the capping ability of the bottle due to the parting line.

Further, in the invention of claim 4, a plug body, in which a part of the spherical surface is crushed to be an aspherical body, is formed by cutting out a part of the spherical surface and hollowing out the inside thereof. By forming the above, in addition to the effect that the content liquid in the bottle can be swallowed through the gap formed in the aspherical portion of the stopper body in the state where the stopper body returns to the drinking mouth again after opening the stopper. By utilizing the recess, it is possible to easily close the spherical portion while positioning it so as to contact the inner surface of the cap holding cylinder during automatic assembly. It is possible to avoid the influence of the parting line on the capping ability of the bottle. Further, by forming a recess in a portion of the non-spherical plug, when the plug is manufactured from a synthetic resin material, the presence of the recess promotes the cooling action inside the resin material after molding, and at the time of cooling. It is possible to prevent the occurrence of distortion of a product that is likely to occur.

Further, in the invention of claim 5, the stopper is made of a synthetic resin material and is a cylindrical body having a recessed portion at one end face thereof. When the stopper is returned, the liquid content in the bottle can be drunk through the gap created between the surface of the stopper and the opening of the cap body, and the shape is simple and the manufacturing is easy. Not only that, due to the presence of the recess formed in the end face located at the bottom when the plug is closed, similar to the effect of the invention of claim 4, positioning is easy at the time of automatic assembly, and occurs at the time of cooling at the time of manufacturing the plug. It is possible to prevent the occurrence of distortion of the easy product.

According to the invention of claim 6, in a Ramune bottle cap in which the bottle mouth portion of the Ramune bottle is sealed by a cap which holds a stopper body inside, the inner surface of the bottle is closed when the bottle is closed. An outer cylinder that contacts the outer surface of the mouth, an inner cylinder that closely contacts the inner surface of the bottle mouth, and a holding cylinder that is provided inside the inner cylinder with a space for absorbing stress and that has an inner surface that contacts the stopper. Is integrally formed of a synthetic resin material, a plurality of annular contact protrusions are provided on the inner surface of the holding cylinder, and the contact protrusions are brought into contact with the cylindrical surface portion of the non-spherical plug body made of the synthetic resin material. In addition to the effect (i) according to the first aspect of the invention, the following effect is obtained by the configuration.

By providing a plurality of annular contact protrusions on the inner surface of the holding tube of the cap, the plurality of contact protrusions and the cylindrical surface portion of the plug body are evenly contacted, and the plug body The sealing position of the plug is maintained at a preset position, and in cooperation with the sealing action of the plug body at the plug head, these contact protrusions contribute to the sealing action of the plug body. In particular, the sealing effect of the plug body in the plug body head described above, since both the cap side and the plug body side are made of synthetic resin material, there is a tendency that the contact seal area of both members increases with the passage of time. The sealing effect is further improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a state when a Ramune bottle cap according to an embodiment of the present invention is closed.

FIG. 2 is a cross-sectional view showing a state at the time of opening the plug, similar to FIG.

FIG. 3 is an explanatory diagram showing a state at the time of use.

[Explanation of symbols]

 1 Outer Cylinder 2 Inner Cylinder 3 Space 4 Holding Cylinder 5 Drinking Mouth 6 Bottle Mouth 7 Edge 8 Edge Stopper 9 Contact Protrusion 11 Spherical 12 Recess 13 Annular Spherical 14 Cylindrical Surface 15 Parting Line 16 Liquid Level A Cap Main body B Ramune bottle C Stopper D Contents liquid

Claims (6)

[Claims] 1. A stopper body which is formed by sealing a bottle mouth portion of a Ramune bottle with a cap made of a synthetic resin material, and which is held inside the cap for capping, wherein the stopper body is made of a synthetic resin material. In addition, the stopper used for the Ramune bottle cap is characterized in that the specific gravity of the entire stopper is smaller than 1. 2. A bottle body of a Ramune bottle is hermetically sealed with a cap made of a synthetic resin material, and the cap body is held inside the cap for closing the cap, and the cap body is made of a synthetic resin material. A stopper used for a Ramune bottle cap, characterized in that it is formed into a non-spherical shape by partially crushing the sphere. 3. A plug body in which a spherical body is partially crushed to be an aspherical body has a cylindrical surface at least in part, and the cylindrical surface portion closes the inner diameter liquid passage of the cap when the cap is closed. The plug used for the Ramune bottle cap according to claim 2. 4. A plug body in which a spherical body is partially crushed to be an aspherical body is formed by removing a part of a spherical surface and forming a hollow portion in which the inside is hollowed out. A stopper used for the Ramune bottle cap according to Item 2. 5. A bottle body of a Ramune bottle is hermetically sealed with a cap made of a synthetic resin material, and the cap body is held inside the cap for closing the cap, and the cap body is made of a synthetic resin material. In addition, a plug body used for a Ramune bottle cap, characterized in that it is a cylindrical body having a recessed part formed on one end face. 6. A Ramune bottle cap in which a bottle mouth portion of a Ramune bottle is sealed by a cap that holds a stopper for capping the inside, wherein the inner surface contacts the outer surface of the bottle mouth portion when the cap is closed. A cylinder, an inner cylinder that is in close contact with the inner surface of the bottle mouth, and a holding cylinder that is provided inside the inner cylinder with a space for stress absorption separated and the inner surface contacts the plug body are integrated by a synthetic resin material. A plurality of annular contact protrusions are provided on the inner surface of the holding cylinder, and the contact protrusions are configured to be in contact with the cylindrical surface portion of the non-spherical plug made of a synthetic resin material. Characteristic Ramune bottle cap.