JP2002179116A - Cap for lemonade bottle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smoothly remove a cap. SOLUTION: A longitudinal groove 10 is formed on an internal surface 4a of a barrel 4 of an outer cylinder 1 of the cap, and the groove 10 is filled with a thermoplastic elastomer E by insert molding for welding.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a cap for a ramune bottle.

[0002]

2. Description of the Related Art A conventional cap for a ramune bottle has an outer cylinder made of a hard synthetic resin having a spout on a head and a locking ridge on an inner surface of a body, and a cap inside the outer cylinder. And an inner cylinder made of a soft synthetic resin having a ball press-fitting portion continuous with the spout.

The outer cylinder and the inner cylinder are mutually fused and integrally formed in a molding step by insert molding or two-color molding, and the glass ball is pressed into a ball press-fit portion of the inner cylinder.

[0004] The cap is attached to the mouth of the ramune bottle by tapping, and the cap does not come out of the mouth of the bottle during use.

[0005] The Ramune bottle is reused after the contents liquid is consumed, but when it is reused, the cap must be removed from the mouth of the Ramune bottle.

However, as described above, since the locking ridge of the cap is fitted into the engagement recess of the bottle mouth, it is difficult to remove the cap from the bottle mouth even by grasping the cap by hand and pulling.

Therefore, the cap is removed using a stopper.

[0008]

However, even if a stopper is used, since the locking ridge is fitted in the engaging recess of the mouth of the ramune bottle, the locking ridge is not easily removed from the engaging recess. I won't come off.

For this reason, it takes a long time to remove the cap, and a large force is required. Further, the mouth of the ramune bottle may be damaged, and the bottle may not be reused.

In view of the above circumstances, it is an object of the present invention to enable a cap to be removed smoothly.

[0011]

According to the present invention, there is provided an outer cylinder made of a hard synthetic resin having a spout on a head and a locking ridge on an inner surface of a body, and an outer cylinder made of a hard synthetic resin. And an inner cylinder made of a soft synthetic resin having a ball press-fitting portion continuous with the spout, and a cap for a ramune bottle, wherein a vertical groove is formed on the inner surface of the body, and It is characterized by being filled with a soft synthetic resin.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The present inventor has proposed that the cap can be easily removed by removing the cap from the engaging recess when the cap is unplugged and a force is applied to the gripping portion. We thought that it would be better if the outer cylinder of the cap could easily spread outward, and conducted a research experiment.

As a result, it has been found that it is sufficient to form a vertical groove on the inner surface of the outer cylinder and fill and fix the vertical groove with a soft synthetic resin.

[0014] The longitudinal groove is formed by the entire length of the outer cylinder, the upper and middle portions,
Alternatively, it is formed only on the locking ridge, but its position, size, shape, etc. are appropriately selected as necessary.

For example, a thermoplastic elastomer is selected as the soft synthetic resin which is filled and fixed in the longitudinal grooves. The vertical groove is a vertical V-groove formed along the center axis of the cap. However, the vertical groove may not be vertical and may be, for example, an inclined U-groove in a direction intersecting the stop axis.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS.

The outer cylinder 1 is formed of a hard synthetic resin, for example, polypropylene, and its head 2 has a spout 3
Is provided on the inner surface 4a of the body portion 4.
Is provided with a locking ridge 7 that engages with the engaging concave portion.

On the inner surface 4a of the body 4, three longitudinal grooves 10 are provided at equal intervals in the circumferential direction. This flute 1
Although 0 is formed in a V-shaped cross section along the central axis C, the cross-sectional shape of the vertical groove 10 can be appropriately selected as needed. A soft synthetic resin, for example, a thermoplastic elastomer E is filled and fused in the vertical groove 10 by insert molding. The fitting force of the outer cylinder 1 is reinforced by the filling and fusion of the elastomer E as described above. The elastomer E can be melted and molded when heated, but has rubber elasticity at room temperature. At the lower part of the body 4 of the outer cylinder 1, a stopper removal portion 11, for example, a concave portion or a convex portion is provided.
An inner cylinder 15 is insert-molded inside the outer cylinder 1. The material of the inner cylinder 15 is, for example, the same soft synthetic resin as the filler of the vertical groove 10, that is, a thermoplastic elastomer E.
It is.

Since the inner cylinder 15 and the vertical groove 10 are continuous, the two 10 and 15 are simultaneously and integrally formed by insert molding.

The inner cylinder 15 is provided with a ball press-in portion 16a for holding a ball 16, and a stopper wall 17 continuous with the injection port 3 is provided at the upper end thereof. Next, the operation of the present embodiment will be described.

After the contents of the ramune bottle have been consumed, the gripper 20a of the bottle opener 20 is grasped, the hook of the bottle remover 20 is engaged with the stopper removal stopper 11, and the gripper 20a is lifted upward. At this time, the thermoplastic elastomer E is provided on the inner surface 4a of the outer cylinder 1.
Is provided with the vertical groove 10 which is filled and welded.
The outer cylinder 1 extends outward.

As a result, the engaging force between the locking ridge 7 and the engaging concave portion is weakened, so that the locking ridge 7 is easily detached from the engaging concave portion of the ramune bottle opening 6.

Further, when the stopper 20 is turned upward, the cap is easily detached from the ramune bottle opening 7. Second embodiment of the present invention
An embodiment will be described with reference to FIG. 3. The same reference numerals as those in FIG. 1 have the same names and functions.

The difference between this embodiment and the first embodiment is the length of the vertical groove. That is, in the first embodiment, the length of the vertical groove 10 is formed over the entire length of the body 4, whereas in the present embodiment, the length of the vertical groove 20 is the upper part 4 a and the middle part 4 b of the body 4. It is only formed up to. That is,
It does not extend to the lower part 4c. A third embodiment of the present invention will be described with reference to FIG. 4, in which the same reference numerals as in FIG. 1 have the same names and functions.

The difference between this embodiment and the first embodiment is the length of the vertical groove. That is, in the first embodiment, the length of the vertical groove 10 is formed over the entire length of the body 4, whereas in the present embodiment, the vertical groove 30 is formed in the portion of the locking ridge 7 of the body 4. Only that it is formed.

[0026]

According to the present invention, a vertical groove is provided on the inner surface of the body,
Since the vertical groove is filled with the soft synthetic resin, when the plug is removed, the outer cylinder of the cap spreads outward and is easily pulled out.

Therefore, the cap is easily detached from the mouth of the ramune bottle, and the mouth of the ramune bottle is not damaged when the cap is removed.

Further, since the stopper is provided on the outer cylinder, the stopper can be easily removed and the stopper can be easily removed.

[Brief description of the drawings]

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

FIG. 2 is a cross-sectional view taken along the line II-II of FIG.

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

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer cylinder 2 Head 3 Injection port 4 Body 6 Ramune bottle mouth 10 Vertical groove 11 Hook for opening / disconnecting 20

Claims (6)

[Claims] 1. An outer cylinder made of a hard synthetic resin having a spout provided on a head and a locking ridge provided on an inner surface of a body, and formed inside the outer cylinder and connected to the spout. An inner cylinder made of a soft synthetic resin having a ball press-fitting portion, wherein a vertical groove is formed on the inner surface of the body, and the vertical groove is filled with the soft synthetic resin. Features a cap for a ramune bottle. 2. The cap for a ramune bottle according to claim 1, wherein the vertical groove is formed over the entire length of the body. 3. The cap for a ramune bottle according to claim 1, wherein the vertical groove is formed over an upper portion and a middle portion of the body portion. 4. A cap for a ramune bottle according to claim 1, wherein the vertical groove is formed only in the portion of the locking ridge. 5. The cap for a ramune bottle according to claim 1, wherein the soft synthetic resin is a thermoplastic elastomer. 6. A cap for a ramune bottle according to claim 1, wherein a stopper is provided on the outer cylinder.