JP3104061B2 - Soda bottle cap - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cap for a carbonated beverage bottle used for sealing a so-called Ramune bottle.

[0002]

2. Description of the Related Art Jpn.
71443, 62-171444, Heikai 1-476
97, 2-8742, 2--16754, 3-97
050, 4-118342, 5-51752, etc., it has a roughly dome shape, has a projection on the inner peripheral surface that engages with the projection on the outer periphery of the bottle mouth, and has a spout hole at the center top. The cap body having the cap body, disposed inside the cap body, has a substantially cylindrical shape, the outer periphery of which is in contact with the inner peripheral surface of the bottle opening portion to maintain airtightness, and in contact with a sphere held by the inner peripheral portion. 2. Description of the Related Art There is known a cap of a carbonated beverage bottle including a packing member for maintaining airtightness and a sphere held by an inner peripheral portion of the packing member.

[0003] This type of cap is one in which a cap body, a packing member, and a sphere are assembled and integrated in advance and plugged into a bottle opening, and is known as a cap that can seal a Ramune bottle very easily. Have been.
Normally, the cap body is made of a relatively hard material such as polypropylene so that it is securely engaged with the bottle mouth.
As the packing member, a relatively soft material such as polyethylene is used so as to be in contact with the inner surface of the bottle opening and the outer surface of the sphere to maintain airtightness.

[0004]

Since this type of conventional cap is firmly engaged with the bottle mouth, it is difficult to remove the cap from the bottle after swallowing the ramune.
It has been difficult to use as returnable bottles or to separate bottles and caps for recycling.

SUMMARY OF THE INVENTION The present invention makes it possible to easily remove a cap from a bottle and use it as a returnable bottle, or to separate a bottle and a cap and recycle them easily to achieve effective use of resources. It is an object.

[0006]

According to the present invention, there is provided a cap body having a substantially dome shape, having a projection on an inner peripheral surface for engaging with a projection on an outer periphery of a bottle mouth, and having a pouring hole at a central top portion; It is disposed inside the cap body, has a substantially cylindrical shape, and its outer periphery contacts the inner peripheral surface of the bottle opening to maintain airtightness, and also maintains airtightness by contact with a sphere encapsulated in the inner peripheral portion. In a cap of a carbonated beverage bottle comprising a packing member and a sphere wrapped by an inner peripheral portion of the packing member, a notch is provided near a lower end of an inner peripheral wall portion of the pouring hole, and a notch is provided immediately above the notch. By providing a radial groove on the outer surface of the top of the cap body, inserting the tip of a rod-shaped instrument into the notch and pushing up, the cap body is broken from the groove, and the cap can be easily removed from the bottle. It is characterized by doing It is a cap of acid beverage bottles.

By providing a notch near the lower end of the inner peripheral wall of the pouring hole, the tip of the rod-shaped instrument can be inserted. By providing a radial groove outside the top of the cap body immediately above the notch, that portion is made to be a fragile portion, so that it can be easily broken. When the tip of the rod-shaped instrument is inserted into the notch and pushed upward, the cap body starts to break from the groove, and finally the cap body is completely broken. Thereafter, the cap can be completely removed from the bottle by removing the packing member remaining in the bottle mouth.

By providing a vertical groove inside the peripheral wall of the cap main body and near the groove, it is possible to prevent the fragments from being broken irregularly and scattered when the cap main body is broken, thereby preventing a person from being hurt. This is because the cap body is guided by the vertical groove and breaks. By providing the vertical groove inside, it is possible to prevent the cap from breaking when the cap is plugged into the bottle. Conversely, when the vertical groove is provided on the outside, the possibility that the cap body is broken at the vertical groove portion during tapping increases.

[0009] The inner peripheral wall of the spout hole of the cap body may be an inner cylindrical wall that is formed so as to hang down from the periphery of the spout hole, and the notch may be formed at the lower end of the inner cylindrical wall. By providing such an inner cylinder wall, the thickness of the cap body can be reduced, and the cap body can be more easily broken.
In this case, it is desirable that the notch cuts the entire thickness of the inner cylinder wall.

There are various configurations for coupling the cap body and the packing member as described in the above-mentioned known documents, and any configuration may be adopted. In particular, the outside of the inner cylindrical wall and the packing member may be used. A projection is formed inside the upper part of the packing member, and the projection member is engaged with the packing member, so that the packing member and the cap main body can be combined and integrated. With this configuration, since the packing member and the cap main body are not connected in the cutout portion, the cap main body can be more easily broken.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing embodiments. FIG. 1 is a cross-sectional view of a state in which a cap 1 of the embodiment is plugged into a bottle mouth, FIG. 2 is a top view of a cap body 2, and FIG. 3 is a cross-sectional view taken along line AA in FIG.

A cap 1 shown in FIG.
It comprises a packing member 3 and a sphere 4. The cap body 2 is made of polypropylene and has a substantially dome-shaped overall shape. The cap body 2 has a projection 10 on the inner peripheral surface which engages with the projection 21 on the outer periphery of the opening of the bottle 20, and has a spout hole 5a at the top of the center. . The inner peripheral wall of the pouring hole 5a is an inner cylindrical wall 5 formed downward from the periphery of the pouring hole, and a projection 9 for coupling the packing member 3 is formed at the lower end thereof. I have. At the lower end of the inner cylinder wall 5, a cutout 6 is formed in which the entire thickness of the inner cylinder wall is cut out. Immediately above, a V-shaped groove 7 in the radial direction is provided on the outer surface of the top of the cap body 2. Three V-shaped vertical grooves 8 are provided near the groove 7 on the inner surface of the peripheral wall of the cap body 2.

The packing member 3 is made of polyethylene and has a substantially cylindrical shape. The outer peripheral surface 14 comes into contact with the inner peripheral surface of the mouth of the bottle 20 to maintain airtightness. A flange portion 12 is formed on the outer peripheral surface 14, and the lower surface thereof contacts the upper surface of the bottle opening. A peripheral groove 13 is provided at the base end of the flange portion 12, whereby the outer peripheral surface 14 is elastically pressed against the inner peripheral surface of the bottle opening. A glass sphere 4 is held in the inner peripheral portion. The inner peripheral portion of the packing member 3 and the outer surface of the sphere 4 are elastically contacted by the inner peripheral portion being pressed by the sphere, and airtightness is maintained. A projection 11 is formed inside the upper part of the packing member 3, and the projection 11 is engaged with the projection 9 of the cap body, whereby the packing member 3 is coupled to the cap body 2.

As shown in FIG. 1, the tip of a rod-like instrument 22 such as a screwdriver is inserted into the notch 6 and the tip is pushed up using the principle of leverage. Break. At this time, since the peripheral wall of the cap main body is guided by the vertical groove 8 and breaks, the cap main body does not break irregularly and fragments do not scatter. After the cap body 2 is broken and removed, the packing member 3 is removed from the opening of the bottle. When the packing member is removed, the sphere 4 can be taken out from the bottle opening.

[0015]

The cap of the present invention can be easily used as a returnable bottle since the cap body can be easily broken off and removed from the bottle.
It is easy to separate bottles and caps for recycling, which contributes to effective use of resources.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a state in which a cap 1 of an embodiment is plugged into a bottle mouth.

FIG. 2 is a top view of the cap body 2. FIG.

FIG. 3 is a sectional view taken along line AA in FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cap 2 Cap main body 3 Packing member 4 Sphere 5 Inner cylinder wall 5a Injection hole 6 Notch 7 Groove 8 Vertical groove 9 Projection 10 Projection 11 Projection 12 Flange part 13 Peripheral groove 14 Outer peripheral surface 20 Bottle 21 Projection 22 Instrument

Claims (4)

(57) [Claims] 1. A cap body having a roughly dome shape, having a projection on an inner peripheral surface for engaging with a projection on an outer periphery of a bottle mouth, and having a pouring hole at a central top portion, and disposed inside the cap main body; A packing member having a substantially cylindrical shape, an outer peripheral surface of which is in contact with the inner peripheral surface of the bottle mouth portion to maintain airtightness, and which maintains airtightness by contact with a sphere held by the inner peripheral portion; and a packing member. In a cap of a carbonated beverage bottle comprising a sphere held by an inner peripheral portion of the cap, a notch is provided near the lower end of the inner peripheral wall of the pouring hole, and an outer surface of a top of the cap body immediately above the notch is provided. A carbon dioxide is provided, in which a radial groove is provided, and a cap body is broken from the groove by inserting a tip of a rod-shaped instrument into the notch and pushing up the cap, so that the cap can be removed from the bottle. Beverage bottle caps 2. A cap for a carbonated beverage bottle according to claim 1, wherein a vertical groove is provided on an inner surface of a peripheral wall of said cap body and near said groove. 3. The cap according to claim 1, wherein an inner peripheral wall portion of the pouring hole of the cap body is an inner cylindrical wall formed to hang down from a periphery of the pouring hole, and the cutout portion is formed of an inner cylindrical wall. A carbonated beverage bottle cap formed at the lower end 4. The cap according to claim 3, wherein projections are formed on the outside of the inner cylindrical wall and on the inside of the upper part of the packing member, and the projections are engaged to couple the packing member to the cap body. Carbonated beverage bottle caps characterized by the following: