JPH0547060Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a spout with an opening device used for paper containers.

(Prior art) Conventionally, as this type of technology, for example,
As described in Publication No. 62-4558, the spout of this container consists of three parts: a spout main body, a lid, and a cylindrical inner plug, and has a serrated claw piece on the lower end surface for pushing. The cylindrical inner stopper has a temporary stopper protruding from its outer surface and is integrally connected to the upper edge of the spout main body.

(Problem to be solved by the invention) In the case of the above container spout, if the connection between the cylindrical inner stopper and the main body of the spout is made by integral molding, The mold becomes complicated,
If the two parts were to be glued together after molding, it would be more labor-intensive, and since the lower end surface of the cylindrical inner stopper has fine serrations, the sealing of the container due to the lowering of the cylindrical inner stopper would be difficult. This pressure resulted in the entire lower end surface of the annular shape being pressed, and this, combined with the elongation of the seal portion, left a problem in opening the seal.

(Means for Solving the Problems) The present invention was devised in view of the above points. What are the ingredients?
We aim to solve this problem by keeping the engagement between the upper and lower parts of the piercing tool at the mutual annular locking parts, and by making the lower tip of the piercing tool a conical pointed head. It's on.

That is, in the present invention, in the above three-piece spout, the cap that is screwed onto the spout main body has a cut-out piece around its lower edge, and when the cap is screwed, The descending piercing tool has a conical pointed head supported by a plurality of branches from its inner circumferential wall below, and has an annular locking part on the outer surface or a collar-shaped locking part on the top surface. are established respectively,
An annular locking portion that locks with these locking portions is provided on the inner surface of the spout body or the cap, respectively, and with this configuration, the piercing tool can be used at positions above and below the spout body or on the cap. and a lower position of the spout body, respectively.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

First, among the paper containers, the spout with the opening device used for the bag-in box of the first embodiment is placed in the first position.
This will be explained based on the diagram.

A spout with an opening device is composed of a spout body a, a cap b, and a piercing tool c. For example, the spout body a is made of polyethylene or polypropylene, the cap b is made of polyethylene or polypropylene, and the piercing tool c is made of impact-resistant material. Injection molded from synthetic resin such as polystyrene or polypropylene.

The spout main body a has a spout barrel 1 and a lower mounting part 2.
The pouring cylinder 1 has a threaded portion 3 on its outer surface, an annular protrusion 4 for locking on the upper part of the inner wall surface, and a similar annular groove 5 on the lower part.

The mounting portion 2 has a threaded portion 6 on the inside and a collar portion 7 on the outside.

The cap b has a cut-off piece 9 surrounding it through a thin-walled part 8 at the lower part thereof, and a knob part 10 is provided in a part of the cut-off piece 9.

In addition, the cap b has a threaded part 11 on the inside that is screwed into the threaded part 3 of the spout body a, and a top plate 1.
2 includes an annular protrusion 14 that comes into contact with the upper end surface 13 of the piercing tool c and pushes it down; and a small annular protrusion 15 that comes into contact with the upper end surface of the spout barrel 1 of the spout body a and seals this part. is installed protrudingly.

The piercing tool c descends inside the spout body a, and has a conical pointed head 16 at the lower part supported by four supporting pieces 17 protruding from the inner wall. The space between the pieces 17 is a passage 18 for the liquid content.

Further, the piercing tube c has annular locking protrusions 19 and 20 formed on the upper and lower sides of its outer surface, respectively.

Further, protrusions 21 are protruded on the outer surface of the piercing tool c at symmetrical positions in the axial direction, and on the inner wall surface of the spout barrel 1 of the spout body a corresponding to these protrusions 21. , guide protrusions 2 that guide these protrusions 21
2 and 22 are provided protrudingly on both sides thereof.

In the spout having the above structure, an inner bag 23 made of polyethylene or the like is attached to an outer case 25 with a valve d welded to the outer surface of the flange 24.
This is the outer threaded portion 2 of the opening 26 of the valve d.
7 to the threaded portion 6 inside the mounting portion 2 of the spout body a, the annular protrusion 28 on the upper end surface of the opening 26 seals the aluminum sealing material e.
At the same time, the outer cover 25 is pressed between the flange 24 of the valve d and the flange 7 of the mounting part 2.

The valve d is injection molded from a synthetic resin such as polyethylene or polypropylene, and the aluminum seal material e is coated with a synthetic resin such as polyethylene, and is welded to the bottom surface of the mounting portion 2. There is.

In order to pour out the contents from the spout attached to the bag-in box f, as shown in FIG. Then cut it out from the thin part 8.

Next, insert the cap b into the spout barrel 1 of the spout body a.
By screwing into the top plate 1 of cap b
2, press the upper end surface 13 of the piercing tool c with the annular projection 14 on the lower surface of the piercing tool c, and press the upper annular projection 19 on the outer surface of the piercing tool c and the upper annular projection 4 on the inner surface of the spouting tube 1.
Release the engagement and press down.

At this time, the axial protrusion 21 on the outer surface of the piercing tool c is the same as the guide protrusion 22 on the inner surface of the spouting tube 1,
22, the piercing tool c descends without rotating, and uses its conical point 16 to pierce the aluminum sealing material e welded to the lower surface of the spout body a.

In this case, the piercing tool c has a locking annular protrusion 20 on the lower side of the outer surface that fits into the lower locking annular groove 5 of the spout barrel 1, and a ring protrusion on the top plate b. 15 is in contact with the upper end surface of the pouring tube 1 to maintain a sealed state. This situation is shown in FIG.

Here, when the cap b is screwed off, the piercing tool c pushes the lower annular spouting tube strip 20 into the spouting tube 1.
When the bag-in box f is tilted, the contents are poured out from the inner side through the passage 18 of the piercing tube c.

What is shown in FIG. 4 of the second embodiment is as follows from the outside:
This spout is attached to the paper container g shown in FIG.
It consists of b' and piercing tool c'.

Attachment collar 29 of spout body a′ to paper container g
Other than that, the configuration is the same as that of the first embodiment.

The spout body a', which is injection molded from a synthetic resin such as polyethylene, has a plurality of annular protrusions 30 for welding formed on the lower surface of its mounting collar 29. 29 and welded to the opening 31 of the paper container g.

An aluminum seal material h coated with a synthetic resin such as polyethylene is welded to the inner surface of the opening 31 of the paper container g.

The pouring out of the liquid content is the same as in the first embodiment.

The one shown in FIG. 6 of the third embodiment is a spout that is attached to a paper container g' made of the same material as the paper container g of the second embodiment,
This is composed of a spout body a'', a cap b'', and a piercing tool c'', and in order to attach this spout to a container g', a valve d' is used as in the first embodiment. .

The piercing tool c'' has a locking collar 32 directed outward at its upper end, and an annular groove 33 for locking on its lower outer surface. Tsuba 3
2 is locked in the locking annular recessed groove 34 on the back side of the top plate of cap b'', and when used, after removing the cut-off piece and screwing in cap b'', the piercing tool The sharp end of the spout c'' pierces the aluminum sealing material h' coated with synthetic resin such as polyethylene, which is welded to the lower end surface of the pouring tube 1', and also has an annular groove 33 for locking. , is adapted to be locked to a locking annular protrusion 35 at the lower end of the pouring tube 1'.

And those of the second example and the third example,
The paper containers g and g' are bent downward on both sides, and each spout tube is accommodated within a triangular space within the intersection of the extension lines on the bent sides.

(Effect of the invention) The spout of the present invention is composed of three parts: the spout body, the cap, and the piercing tool. When the cap is fixed to the cap, and when the cap is opened after the cap has been cut off, the piercing tool is screwed into the cap and the piercing tool is attached to the annular locking part on the upper outer surface of the cap or the collar-like part on the top surface. The locking part is released from the annular locking part above the spout body or the annular locking part of the cap and is pushed down, and is locked in the lower annular locking part of the spout main body, so it is stable in that position. This ensures that the liquid inside can be poured out after the cap is unscrewed. As described above, in the pouring spout with an opening device of the present invention, before the sealed portion of the paper container is opened, the piercing tool is attached to the annular locking portion on the upper side surface or the brim-like locking portion on the top surface. The piercing tool is locked to the annular locking part above the spout body or to the annular locking part of the cap, and when the cap is opened and the contents are poured out, the piercing tool is locked to the annular locking part below the cap. This device is characterized in that the piercing device is stably locked and held in the upper and lower positions before and after opening the pricking device by locking the portion to the annular locking portion below the spout main body.

Since the puncture tool presses the central part of the sealing material with one point of the pointed end of the central cone, it can easily, reliably, and orderly pierce the sealing material, allowing the contents to be poured out. Even in this case, the liquid inside passes through the inside of the puncture tool, so it can flow out easily.
It is also possible to reduce the amount of content remaining in the container.

[Brief explanation of the drawing]

Fig. 1 is a front view showing a half cross-section of the pouring spout with an opening device according to the present invention, Fig. 2 is a front view similar to the above in an unsealed state with the cut piece removed;
3 is a sectional view taken along line X-X with the cap screwed off in FIG. Figure 5 is a cross-sectional view of a part of the above paper container in a state where it is attached, and Figure 6 is the first spout of yet another embodiment.
FIG. 7 is an exploded perspective view showing a partially cut away spout of the same as shown in the figure. Code, a... spout body, b... cap, c
...Piercing tool, d...Valve, e...Aluminum sealing material, f...Bag-in box, 1...Pour tube, 2...Mounting part, 3, 6, 11, 27...
Threaded portion, 4, 19, 20, 28... Annular protrusion, 5
...Annular concave groove, 8...Thin wall portion, 9...Cutting piece, 1
0... knob portion, 12... top plate, 14... annular protrusion, 16... pointed head, 17... branch piece, 18... passage, 21... protrusion, 22... guide protrusion, 23...
Inner bag, 24... collar, 25... outer bag, 26... opening.

Claims (1)

[Scope of utility model registration request] In a spout in which a cap is screwed on the outside of the spout body and a piercing device is provided inside that descends when the cap is screwed, the cap that is screwed onto the spout body is attached to the bottom edge of the spout body. The piercing tool has a cut-off piece around it and descends when the cap is screwed in. The piercing tool has a conical pointed head below it, supported by a plurality of branches from the inner circumferential wall, and has an outer An annular locking portion is provided on the side surface or a brim-like locking portion is provided on the top surface, and an annular locking portion that locks with these locking portions is provided on the inner surface of the spout body or the inner surface of the cap, and this configuration used in a paper container, characterized in that the pricking tool is configured to be held in place above and below the spout body, and at a position below the cap and the spout body, respectively. Pour spout with opening device.