JPH0132990Y2 - - Google Patents

Description

[Detailed Description of the Invention] Field of the Invention The present invention relates to a cap of a magic bottle that is interposed between the lower surface of the sprue of the shoulder body and the upper surface of the mouth of a medium bottle.

Conventional technology and its problems Conventionally, in magic bottles, a cap is provided between the bottom surface of the sprue on the shoulder body and the top surface of the bottle mouth of the medium bottle, and the cap can be removed by tightening the medium bottle. It is crimped to seal around the bottle mouth. On the other hand, a plug body is fitted into the sprue portion of the shoulder body, and a plug rubber is attached to this plug body to seal between the sprue portion and the sprue portion. Therefore, cap rubber and stopper rubber are provided near the bottle mouth and spout, but these rubbers are made of expensive materials such as silicone rubber due to heat resistance requirements. In order to reduce costs, it is desirable to make the device as small as possible or to share parts.

In order to meet such demands, conventionally, as shown in FIG.
The plug body 2 is made to protrude inside the inner end portion 21, and the plug body 2 is made to protrude inside the
3 is crimped so that the opening rubber 20 also serves as a stopper rubber.

However, in this case, the stopper 23 is
Since the seal is made by pressing against the upper surface of the inner end 21 of the plug 23, even if the fitting position of the plug 23 shifts slightly upward, the sealing performance will be significantly reduced. There was a problem in that the bottle 24 was affected and a large load was placed on the medium bottle 24. In addition, the inner end 21 of the mouth rubber 20 is connected to the sprue part 22.
Since the inner end portion 21 is exposed from the inner end portion, it is easily damaged when the plug body 23 is inserted, and also has the drawback that if the inner end portion 21 becomes dirty with water scale or the like, the dirt becomes noticeable.

Purpose of the invention The present invention was devised in view of these conventional problems.The purpose of the invention is to reduce costs by making the cap rubber also serve as a plug rubber, and to reduce the pressing force from the plug body to the cap rubber. To provide a mouth rubber for a magic bottle that prevents deterioration of sealing performance by preventing the seal from acting and eliminates problems caused by damage and dirt.

Structure of the Invention In order to achieve the above object, the closure rubber of the present invention has a recess on the inner surface of the upper part that fits tightly to the annular protrusion provided on the lower surface of the inner end of the sprue, and the outer surface of the lower part has a recess on the inner surface of the inner end of the bottle spout of the medium bottle. It has a concave surface that fits closely to the sprue, and has an annular tongue hanging diagonally inward on the inner periphery, and the tip of the annular tongue comes into pressure contact with the outer peripheral surface of the plug that is fitted into the sprue. It is configured as follows.

DESCRIPTION OF EMBODIMENTS FIG. 1 shows a magic bottle having a bottle holder structure according to the present invention, where 1 is the main body of the magic bottle, 2 is a medium bottle, 3 is a shoulder body, and 8 is a sprue portion 4 of the shoulder body 3. The fitted stopper 9 is an air pump that sends air into the medium bottle 2 through the stopper 8.

At the inner end of the spout 4 of the shoulder body 3, an annular protrusion 5 projecting downward is provided as shown in FIG. A cylindrical wall 6 having an inner diameter approximately the same as the diameter is vertically provided. This cylindrical wall 6 has a plurality of notches 7 formed in the vertical direction as shown in FIG. 2, giving the cylindrical wall 6 elasticity in the outward and outward directions. Therefore, by inserting the bottle opening 2a of the medium bottle 2 into this cylindrical wall 6, the bottle opening 2a of the medium bottle 2 can be held with a lateral cushioning effect.

Reference numeral 10 denotes a cap rubber made of silicone rubber, which is interposed in a compressed state between the lower surface of the inner end of the sprue 4 and the upper surface of the inner end of the bottle spout 2a of the medium bottle 2. The portion 2a is held with a vertical buffering effect.
The cap rubber 10 is provided between the inner end of the sprue 4 and the inner end of the bottle spout 2a in this way.
This is to make the diameter of the bottle as small as possible to reduce the amount of silicone rubber used, and to make the cap rubber 10 more tightly adhere to the inner surface of the bottle mouth portion 2a by tightening the medium bottle 2. The mouth rubber 10 has the shape shown in FIG. 3 in its natural state, and has a recess 11 on its upper inner surface that closely contacts the outer circumferential surface and lower surface of the annular projection 5 of the sprue 4, and its lower outer surface has It has a concave surface 12 that closely contacts the inner end of the bottle opening 2a of No. 2, and further has an annular tongue piece 13 hanging diagonally inward on the inner circumference. The inner diameter of the tip of the tongue 13 is smaller than the outer diameter of the plug 8, and the tip of the tongue 13 presses against the outer peripheral surface of the plug 8 to form a seal.
In particular, since the annular protrusion 5 is provided on the lower surface of the inner end of the sprue portion 4, it is possible to prevent the spout rubber 10 from protruding inside the sprue portion 4 when the sprue rubber 10 is crimped.

Here, the function of the tongue piece 13 will be explained in detail with reference to FIG. 4. First, when the plug body 8 is inserted into the sprue part 4, the lower end of the plug body 8 touches the tongue piece 13, and the tongue piece 13
Since the tongue piece 13 is bent outward, it can be inserted smoothly and the tongue piece 13 will not be damaged. Since the tongue piece 13 is in pressure contact with the outer circumferential surface of the plug 8 in the fitted state, sufficient sealing performance can be maintained without pushing down the plug 8. Furthermore, even if the fitting position of the plug body 8 is slightly shifted up and down, the tongue piece 13 absorbs this shift and the sealing performance is not impaired. Moreover, even if the magic bottle accidentally falls over with the stopper 8 fitted, the tongue piece 13 is bent by water pressure and comes into close contact with the stopper 8, so water leakage can be prevented. Furthermore, air pump 9
When activated, the internal pressure inside the medium bottle 2 increases, but
Due to the internal pressure, the tongue piece 13 is bent in the same way as described above and comes into close contact with the plug body 8, so that air leakage can also be prevented.

In the above embodiment, an air pot having an air pump 9 on the upper part is shown as a magic bottle, but the present invention is not limited to this, and it may be a so-called hand pot that pours liquid by lifting it by hand. However, in the case of an air pot, a lid 14 (see Figure 1) containing an air pump 9 is provided above the shoulder body 3, and the plug is inserted through a cylindrical seal rubber 15 at the center of the lower end of the lid 14. Since the mouth rubber 10 of the present invention is adapted to press against the body 8, it is advantageous to adopt the mouth rubber 10 of the present invention. This is because, in the conventional case (Fig. 5), since the stopper is strongly pressed against the mouthpiece, the reaction force causes the lid 14 to warp, creating a gap between the lid 14 and the shoulder body 3. On the other hand, if the pressing force against the mouth rubber is weak, it may lead to air leakage or water leakage.
This is because there is no need to press the rubber against the mouth rubber 10, so there is no need to worry about the above problem.

Effects of the invention As is clear from the above explanation, according to the invention, an annular tongue piece that hangs diagonally inward is provided on the inner circumference of the mouthpiece, and the tip of this tongue piece fits into the sprue part. Since the plug is brought into pressure contact with the outer circumferential surface of the plug, the conventional plug rubber can be eliminated, and costs can be reduced.

In addition, since the seal is sealed without pressing the stopper against the mouth rubber, the sealing performance will not deteriorate even if the fitting position of the stopper goes up or down slightly.Furthermore, since no downward force is applied to the medium bottle, a large load is placed on the medium bottle. It doesn't cost anything.

Furthermore, since the tongue piece hangs diagonally inward from the inner periphery of the mouth rubber, there is no fear that the mouth rubber will be damaged when the stopper is inserted, and the tongue piece is located at the back of the sprue. Therefore, there are no noticeable stains.

In addition, the cap rubber has a concave part on the inner surface of the upper part that comes into close contact with the annular protrusion provided on the lower face of the inner end of the sprue, and a concave part on the outer surface of the lower part that comes into close contact with the inner end of the bottle mouth part of the medium bottle. Even if the sprue is tightened strongly, the annular protrusion prevents the mouth rubber from protruding inside the sprue, ensuring sufficient sealing performance.

[Brief explanation of the drawing]

Fig. 1 is a partially sectional side view of an example of a ball bottle equipped with a cap according to the present invention, Fig. 2 is a longitudinal sectional view of the shoulder body, Fig. 3 is a sectional view of the cap, and Fig. 4 is a sectional view of the cap. 1 is an enlarged view of the portion shown in FIG. 1, and FIG. 5 is a partial sectional view of the conventional example. 2...Medium bottle, 2a...Bottle mouth, 3...Shoulder body, 4
... sprue part, 5 ... annular projection, 8 ... plug body, 10
... Mouth rubber, 11 ... Concave portion, 12 ... Concave surface, 13
...Tongue piece.

Claims (1)

[Scope of Claim for Utility Model Registration] In the lip of a magic bottle that is interposed between the lower surface of the sprue on the shoulder body and the upper surface of the spout of a medium bottle, the rubber is provided on the inner surface of the upper part and on the lower surface of the inner end of the sprue. The annular tongue has a concave portion that comes into close contact with the annular protrusion, has a concave surface that comes into close contact with the inner end of the bottle mouth of the medium bottle on the lower outer surface, and has an annular tongue piece that hangs diagonally inward on the inner circumference, and the annular tongue A rubber bottle cap configured such that the tip of the piece comes into pressure contact with the outer circumferential surface of a stopper that is fitted into a sprue.