JP2001240090A - Bottle for refreshing drink - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bottle constituted so that a cap can not be detached with empty hands and the cap and a bottle main body can be separately recovered. SOLUTION: A male screw 4 and a projected part 5 are provided to the outer periphery of the mouth part 3 of the bottle part 1 while a female screw 16 and an engaging ridge 17 are formed to the inner periphery of the outer cylinder part 11 formed to the cap 10. The female screw 16 is screwed in the male screw 4 to tighten the cap 10 and the engaging ridge 17 is engaged with the lower end of the projected part 5 in the almost perfectly screwed state of the cap 10 to lock the cap 10 and the cap 10 is detached by grasping and rotating the cap 10 by a grasping tool such as pliers to separately recover the cap 10 and the bottle main body 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bottle filled with soft drink, particularly lemonade (ramune).

[0002]

2. Description of the Related Art Glass bottles and synthetic resin bottles have been conventionally known as lambune bottles. By the way, in the case of a glass bottle, the cost is high, and when refilling the ramune after the collection, it is necessary to perform washing.

[0003] In this case, since a packing made of glass beads is attached to the inner periphery of the mouth of the bottle to prevent the stopper from coming off, it may be difficult to clean around the packing and dirt cannot be completely removed. Yes, there are hygiene problems.

On the other hand, in the case of a bottle made of synthetic resin, a manufacturing method of blow molding can be adopted, so that the manufacturing cost is easy, and it is sanitary because it is not reused. , Resources can be used effectively.

[0005] Here, in a bottle for a ramune made of synthetic resin, a cap is usually attached to the mouth of the bottle body, and a cap made of a glass ball is held by the cap.

[0006] As the mounting of the cap, mounting by driving and mounting by screwing are known. In order to prevent the cap from being inadvertently removed in mounting, a screwing method using a left-handed screw is adopted. ing.

In the above-mentioned synthetic resin ramune bottle, since the bottle body and the cap are made of synthetic resin of different materials, it is necessary to remove the cap and separate and collect it when recycling. .

[0008]

By the way, in a bottle in which a cap is attached by driving,
Since the cap is prevented from coming off by engaging the engaging ridge formed on the inner periphery of the cap with the engaging groove formed on the outer periphery of the mouth of the bottle body, it is extremely difficult to remove the cap. There is an inconvenience that it takes a lot of time for collection.

On the other hand, in a bottle in which a cap is attached by screwing, the cap is apt to be loosened. If the cap is removed by mistake while drinking ramune, a stopper is left in the bottle body. There is a risk that the stopper will be swallowed when drinking the remaining ramune.

[0010] An object of the present invention is to provide a bottle for soft drinks which can prevent the cap from being removed by a bare hand and can easily separate and collect the cap and the bottle main body. It is to be.

[0011]

In order to solve the above-mentioned problems, according to the present invention, a male screw is provided on the outer periphery of the mouth of a synthetic resin bottle body, and an annular projection is provided below the female screw. The cap attached to the mouth of the bottle body has an outer cylinder fitted into the mouth, and an inner cylinder inserted into the mouth, and the inner periphery of the outer cylinder is screwed with the male screw. A female screw to be engaged, and an engaging ridge that engages with the lower surface of the protruding portion when the female screw is almost completely screwed into the male screw, to prevent the spherical plug from coming off in the inner cylindrical portion. That is why the retained configuration was adopted.

With the above construction, the cap can be screwed into the mouth of the bottle body by screwing, and the engagement protrusion of the cap is provided on the lower surface of the projection after screwing of the cap is completed. Because of the engagement, the cap cannot be rotated in the loosening direction with bare hands, and the bottle body and the cap can be held in a very stable coupled state.

Further, since the cap can be rotated in the loosening direction by using a tool such as a plier, the cap can be removed, and the bottle body and the cap can be separated and collected relatively easily.

Here, if a taper surface is provided on at least one of the upper end surface of the protrusion and the lower surface of the engagement ridge, when the cap is tightened, the engagement ridge of the outer cylinder portion is formed by the wedge action of the taper surface. Since the lower end portion has a larger diameter, the cap can be tightened with a relatively small tightening torque.

Further, if a tapered surface having a lower end with a large diameter end is provided at the lower part of the outer periphery of the protruding portion, the outer cylindrical portion is expanded by the tapered surface, and the inner diameter of the outer cylindrical portion is increased by the restored elasticity due to the expanded diameter. Since the periphery is in close contact with the outer periphery of the protrusion, the cap can be more firmly attached.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2,
The bottle A includes a bottle body 1 and a cap 10.

The bottle body 1 is made of polyethylene terephthalate (PET) and is formed by blow molding. A pair of spherical bulges 2 projecting inward are provided at an upper part of the bottle body 1 at intervals in the circumferential direction. A male screw 4 is formed on the outer periphery of the mouth portion 3 of the bottle body 1 and a protruding portion 5 is formed below the male screw 4. Here, the male screw 4 may be a right-handed screw or a left-handed screw.

Although the protrusion 5 has an outer diameter substantially equal to the outer diameter of the male screw 4 here, it may be larger than the outer diameter of the male screw 4. A tapered surface 6 is formed at the upper end of the protruding portion 5, and a tapered surface 7 whose lower end is a large-diameter end is provided at a lower portion of the outer periphery.

The cap 10 has an outer cylinder 11 fitted into the mouth 3 of the bottle body 1 and an inner cylinder 12 inserted inside the mouth 3. Is formed with a skirt portion 13 extending downward. Also,
A flange 14 projecting inward is provided at an upper end of the outer tube portion 11, and a cover tube portion 15 is formed inward from an inner periphery of the flange 14.

The outer cylinder portion 11 is made of polypropylene, and on the inner periphery there is formed a female screw 16 which is screw-engaged with the male screw 4 of the mouth portion 3, and on the inner periphery of the skirt portion 13 an engaging ridge 17 is provided. ing. The engaging ridge 17 is such that the female screw 16 is
The engagement protrusion 17 is provided with a tapered surface 18 at the lower end thereof.

Here, the engagement ridges 17 are shown as annular ones continuous in the circumferential direction, but may be discontinuous in the circumferential direction.

The inner cylindrical portion 12 is made of low-density polyethylene, and the upper portion is located inside the cover cylindrical portion 15, and the upper end is integrally provided with a flange portion 19 that can be in close contact with the upper end surface of the mouth portion 3. The inner cylindrical portion 12 is formed at the same time as the outer cylindrical portion 11 is formed, and the upper portion is integrated with the outer cylindrical portion 11.

The outer diameter of the inner cylindrical portion 12 is substantially equal to the inner diameter of the mouth portion 3, and the lower end portion has a small diameter and a small thickness. A pair of annular projecting portions 2 as holding portions for holding a stopper 20 made of a glass ball in a retaining state is provided on the inner periphery of the inner cylindrical portion 12.
1, 22 are provided at an interval above and below.

It should be noted that a spherical portion may be formed instead of the pair of annular projecting portions 21 and 22, and the plug 20 may be held by the spherical portion in a state in which the plug 20 is prevented from coming off.

The bottle shown in the embodiment has the above structure, and the cap 10 is attached to the mouth 3 after the bottle body 1 is filled with ramune. When mounting it,
As shown in FIG. 3, the outer cylindrical portion 11 of the cap 10 is
After fitting, the cap 10 is rotated, and the cap 10 is tightened by the screw engagement of the male screw 4 and the female screw 16.

When the cap 10 is tightened by screwing, the lower end of the outer cylinder 11 is brought into contact with the tapered surface 6 formed at the upper end of the projection 5 and the tapered surface 18 provided at the lower end of the engaging ridge 17. When the cap 10 is screwed up to a position where the engagement ridge 17 passes through the protrusion 5, the skirt 13 formed by the skirt 13 is restored by the elasticity of the skirt 13 as shown in FIG. The ridge 17 is the protrusion 5
And the flange portion 19 at the upper end of the inner cylindrical portion 12 comes into close contact with the end surface of the mouth portion 3. Further, the lower end of the outer cylinder portion 11 is enlarged in diameter by a tapered surface 7 formed at the lower part of the outer periphery of the protruding portion 5, and the outer cylinder portion 11 is restored by the restored elasticity due to the increased diameter.
Is in close contact with the outer periphery of the protrusion 5.

As described above, when the cap 10 is screwed into the mouth portion 3, the engaging ridge 17 engages with the lower surface of the projecting portion 5, and the inner periphery of the outer cylindrical portion 11 becomes the outer periphery of the projecting portion 5. In order to rotate the cap 10 in the loosening direction, it is necessary to apply an extremely large rotating torque to the cap 10. For this reason, the cap 10 cannot be rotated in the loosening direction with bare hands, and the cap 10 can be firmly attached to the mouth 3 of the bottle body 1.

Here, if the outer diameter of the cap 10 is made substantially the same as the resin cap of a conventionally known bottle for drinking beverages such as tea and juice, the cap is tightened using an existing lid tightening device. Can be.

In order to separate and collect the bottle A by recycling, the cap is clamped by a clamping tool such as pliers, and the cap 10 is removed by applying a rotational torque in the loosening direction.

[0030]

As described above, the present invention has the following effects.

According to the first aspect of the present invention, since the cap can be attached by screwing the cap into the male screw of the mouth, the cap can be easily attached.
Since the engaging ridge engages with the lower surface of the projection in the state where the cap is mounted, the cap cannot be rotated in the loosening direction with bare hands, and it can be reliably prevented from being accidentally removed. .

Further, since the cap can be removed by holding the cap with a holding tool such as a plier and rotating, the bottle body and the cap can be separated and collected.

In the invention according to the second aspect, the tapered surface is provided on at least one of the upper end surface of the projection and the lower surface of the engaging ridge, so that when the cap is screwed, the outer cylindrical portion is formed by the wedge action of the tapered surface. The diameter of the lower end is increased, so that the cap can be tightened smoothly.

According to the third aspect of the present invention, the tapered surface is provided at the lower part of the outer periphery of the protruding portion, so that the outer cylinder portion is expanded by the tapered surface in the tightened state of the cap, and the outer cylindrical portion is strong against the tapered surface by the restoring elasticity. Due to the close contact, the cap can be attached more firmly.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a bottle according to the present invention.

FIG. 2 is an enlarged sectional view of a cap portion of the bottle shown in FIG.

FIG. 3 is a sectional view showing a state in which the cap shown in FIG. 1 is being mounted.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bottle main body 3 Mouth part 4 Male screw 5 Projection part 6 Tapered surface 7 Tapered surface 10 Cap 11 Outer cylinder part 12 Inner cylinder part 16 Female screw 17 Engagement ridge 18 Tapered surface 20 Plug

Continued on the front page F term (reference) 3E062 AA09 AB02 AC02 BA01 BB09 KA04 KB17 3E084 AA04 AA12 AA24 AB01 BA02 DA01 DB12 EA05 EB03 EC06 FA09 FB01 FB09 GB11 HA10 HD04 KA15 KB01 LA30 LB02 LB06 LC01

Claims (3)

[Claims] 1. A bottle body made of a synthetic resin is provided with a male screw on the outer periphery of the mouth and an annular projection below the female screw, and a cap attached to the mouth of the bottle body is fitted into the mouth. An outer cylinder portion, and an inner cylinder portion inserted into the mouth portion. An inner thread of the outer cylinder portion is screwed into the male screw, and the female screw is almost completely screwed into the male screw. A soft drink bottle provided with an engagement ridge that engages with a lower surface of the protruding portion in a state, and holding a spherical stopper in the inner cylinder portion in a retaining state. 2. The soft drink bottle according to claim 1, wherein a tapered surface is provided on at least one of an upper end surface of the protrusion and a lower surface of the engaging ridge. 3. The bottle for soft drinks according to claim 1, wherein a tapered surface having a lower end with a large-diameter end is provided at a lower part of the outer periphery of the protruding portion.