JPH0733178A - Spout - Google Patents

Abstract

PURPOSE:To provide a spout which prevents securely spillover of contents and of which manufacturing process is simple. CONSTITUTION:A spout is provided with a cylindrical aperture 5 having a peripheral wall 6 on which pierced holes 6a-6c are formed toward the hollow part 7, an elastic body 30 enclosed inside the aperture 5 and pierced by a needle for suction of the contents, and a cover 20 sheathing the aperture 5 and having pressing parts 23a-23c inserted in the pierced holes 6a-6c formed on the peripheral wall 6 to press the side face of the elastic body 30.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spout which is attached so as to close an opening of a container made of, for example, a synthetic resin and is used for taking in and out of a container.

[0002]

2. Description of the Related Art Conventionally, a spout is heat-sealed to an opening of a container made of a relatively flexible material such as a synthetic resin sheet, and the spout contained in the container is prevented from sucking out and flowing out. Used for resealing after evacuation. Such a spout is molded with a synthetic resin or the like, and a spherical or cylindrical rubber for preventing the outflow of the contained matter is enclosed inside the mouth of the spout. Then, a thin film such as an aluminum sheet is attached to the mouth, and when actually using it, make sure that the needle for suction is pierced through the spherical rubber from the top of the aluminum sheet attached to the mouth. Plugged in and unpacked.

In order to reliably prevent the outflow of the contents when the contents are taken out or after the needle that has been inserted is pulled out, the rubber is considerably moved toward the central region where the needles are inserted. It must have a strong pressing force. Because, if this pressing force is weak, a gap will be created between the inserted needle and rubber, or after the needle is pulled out, the trace of the needle will remain as it is and a passage will be created, and the contents will This is because it will easily leak.

For this reason, in the conventional spout, in order to prevent the contents from flowing out, a rubber having a diameter larger than the diameter of the mouth portion is enclosed to give a strong pressing force to the rubber itself.

[0005]

However, it is difficult to enclose rubber having a diameter larger than the diameter of the mouth portion, and a special machine must be used. Moreover, in that case, the spout manufacturing process becomes complicated, for example, by coating the surface of the rubber with a lubricant for smoothing and cleaning the spout after sealing the rubber.

The present invention has been made in order to solve the above problems, and an object of the present invention is to provide a spout that reliably prevents the contents from flowing out and is easy to manufacture.

[0007]

In order to solve the above-mentioned problems, a spout according to the present invention has a cylindrical mouth portion having a peripheral wall having a hole penetrating toward a hollow portion, and the cylindrical mouth portion. An elastic body that is enclosed inside the mouth portion and into which a needle for sucking out a contained item is inserted; and a pressing portion that is inserted into a hole formed in the peripheral wall and presses the surface of the elastic body, and covers the elastic body. And a crown portion attached to the mouth portion.

[0008]

The elastic member enclosed in the tubular mouth portion is applied with a pressing force from the pressing portion formed in the crown portion through the hole formed in the peripheral wall of the mouth portion. For this reason, a pressing force is applied to the elastic body from its surface toward the inside, so that no gap is created between the inserted needle and the elastic body, and even after the needle is pulled out, the internal Due to the pressing force toward, the passage opened by the inserted needle is blocked, and the contents do not leak out.

[0009]

FIG. 1 is a view showing a first embodiment of a spout according to the present invention, (a) is a sectional view and (b) is (a).
3 is a cross-sectional view taken along line bb in FIG. Spout
For example, a flat extension 2 that extends along an opening of a synthetic resin sheet container (not shown) that contains ink and is heat-sealed, a liquid path 3 that is formed perpendicularly to the extension, A main body 1 having a cylindrical opening 5 extending along the liquid passage 3 and defining the internal space 7, a partition wall 8 for partitioning the internal space 7 and the liquid passage 3, and the opening 5 It has an elastic body 30 which is enclosed in the internal space 7 formed by the above, and a crown portion 20 which covers the mouth portion 5 of the main body 1.

The peripheral wall 6 of the mouth 5 is formed with three holes 6a, 6b, 6c communicating with the internal space 7 at intervals of 120 ° along the circumferential direction. Also, the liquid path 3
The partition wall 8 between the inner space 7 and the inner space 7 is formed in a thin shape so that the needle can easily penetrate therethrough. The partition wall 8 also serves as a seal so that the contents of the container do not adhere to the elastic body 30 via the liquid path 3 and the components of the elastic body do not melt into the container. The main body 1 is made of synthetic resin such as polypropylene or polyethylene resin, and is integrally injection-molded by a predetermined mold.

A cylindrical elastic body 30 is provided in the internal space 7.
The elastic body 30 has a cylindrical shape corresponding to the shape of the internal space and has a diameter slightly smaller than the diameter of the internal space 7. Therefore, the elastic body 30
Can be easily enclosed in the internal space 7. Elastic body 3
0 is enclosed in the internal space 7 and is supported by the partition wall 8.

The crown portion 20 has three holes 6 extending in the axial direction from the upper surface to the side surfaces and formed in the peripheral wall 6.
The three grooves 22a, 2 corresponding to a, 6b, 6c
2b and 22c are formed. In addition, these grooves,
It ends at the center of the side face and does not extend to the lower end. At the lower end portions of these grooves, pressing portions 23a, 23b, 23c which vertically project toward the axis of the crown portion 20 are respectively provided.
Are formed, and these pressing portions have three holes 6 formed in the peripheral wall 6 when the crown portion 20 is attached to the mouth portion 5.
The side surface of the cylindrical elastic body 30 that is inserted into the a, 6b, and 6c and is enclosed in the internal space 7 is pressed. Further, the central portion 25 on the upper surface of the crown portion 20 is formed in a thin shape so that the needle can easily penetrate therethrough.
Like the main body 1, this crown portion 20 is also made of synthetic resin and is integrally injection-molded by a predetermined mold.

Next, the operation of the spout of the above embodiment will be described. Inner space 7 of mouth 5 of injection-molded body 1
On the other hand, the elastic body 30 having a cylindrical shape and having a diameter slightly smaller than the diameter of the internal space 7 is enclosed. In this case, since the elastic body 30 can be easily enclosed in the internal space 7, it is not necessary to use a special machine or apply a lubricant to the elastic body. In the mouth portion 5 in which the elastic body 30 is enclosed,
Then, the crown portion 20 is attached. In this case, since the grooves are formed in the crown portion 20 at intervals of 120 ° in the circumferential direction,
The crown portion can be expanded and easily attached to the mouth portion 5.

When the crown portion 20 is attached to the mouth portion 5, FIG.
As shown in (b), the cylindrical elastic body 30 has the pressing portion 2
It is pressed toward the central axis by 3a, 23b and 23c. In this case, the grooves 22a, 22b, 22c end at the central portion of the side surface of the crown portion 20 and the lower end circumference of the crown portion 20 is connected, so that the pressing portions 23a, 23 are formed.
b and 23c can apply sufficient pressing force to the elastic body 30. Further, by attaching the crown portion 20, it is possible to prevent intrusion of dust and the like into the internal space 7 and adhesion of dust to the elastic body 30, and it is not necessary to seal the mouth portion with an aluminum sheet or the like. That is, the step of sealing the aluminum sheet in the mouth is unnecessary.

When a needle is inserted into the spout constructed as described above to suck out the contents of the container, the elastic body 30 into which the needle is inserted is pressed from its surface to the inside by the pressing portions 23a, 23b, 23c. Since a uniform pressing force is applied to the needle, there is no gap between the inserted needle and the elastic body. The passage opened by is closed and the contents do not leak out. For this reason, even if the needle is inserted or pulled out a plurality of times, the contents will not leak out.

FIG. 3 is a diagram showing a second embodiment of the present invention. In this embodiment, the same parts as those in the previous embodiment are designated by the same reference numerals, the description thereof will be omitted, and different parts will be described in detail.

In this embodiment, a spherical elastic body 35 is enclosed in the internal space 7 of the mouth 5. Further, when the crown portion 20 is attached to the mouth portion 5 and the pressing portions 23a, 23b, 23c press the elastic body 35, the elastic body does not spread and the pressing force does not decrease, so that the mouth portion 5 and the crown portion are prevented. Pressing portions 9 and 27, which project toward the internal space, are formed in the portion 20, respectively. As described above, by configuring the mouth portion 5 and the crown portion 20, it is possible to enclose a spherical elastic body having a diameter smaller than the diameter of the internal space 7, and to enclose the elastic body more easily. Become.

Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications can be made, for example, as described below. The elastic body of the embodiment is configured to have a diameter smaller than that of the internal space. However, as long as the elastic body can be easily enclosed in the internal space, the elastic body may have substantially the same diameter and the shape can be appropriately changed. Further, three holes were formed in the peripheral wall of the pressing part and the mouth part for pressing the elastic body, and three holes were provided at intervals of 120 °. Can be selected as appropriate. Further, if the crown portion is easily attached to the mouth portion and a predetermined pressing force is applied to the elastic body, the shape and position of the groove and the pressing portion formed in the crown portion and the shape and position of the hole formed in the peripheral wall. Can be appropriately modified.

[0019]

As described above, according to the spout of the present invention, when the crown portion is attached to the mouth portion, the elastic body enclosed in the inner space of the mouth portion is pressed, so that the elastic body Can be made into a size that can be easily enclosed in the internal space, and it is not necessary to use a special machine, and the manufacturing process can be facilitated. Further, since the elastic body is always pressed by the pressing portion, it is possible to reliably prevent the outflow of the contents even after the needle is inserted to suck out the contents or the needle is pulled out.

[Brief description of drawings]

1A and 1B are views showing a first embodiment of a spout according to the present invention, in which FIG. 1A is a cross-sectional view and FIG. 1B is b in FIG.
-A sectional view taken along line b.

FIG. 2 is a perspective view of a crown portion of the spout shown in FIG.

3A and 3B are views showing a second embodiment of the spout according to the present invention, in which FIG. 3A is a sectional view and FIG.
Sectional drawing along the line.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Main body, 3 ... Liquid path, 5 ... Mouth part, 6 ... Peripheral wall, 6a, 6
b, 6c ... Hole, 7 ... Internal space (hollow portion), 20 ... Crown portion,
23a, 23b, 23c ... pressing portion, 30, 35 ... elastic body.

Claims (1)

[Claims] 1. A cylindrical mouth portion having a peripheral wall formed with a hole penetrating toward the hollow portion, and elasticity which is enclosed inside the cylindrical mouth portion and into which a needle for sucking out an article is inserted. A body and a pressing portion that is inserted into a hole formed in the peripheral wall and presses the surface of the elastic body, and a crown portion that is attached to the mouth so as to cover the elastic body. And spout.