JPH0720042Y2 - Liquid dispensing container - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a liquid pouring container, and more particularly to a liquid pouring container designed to release excess air pressure in the container.

[Conventional technology]

In general, it is known that the inside of a liquid-containing pour-out container also changes due to changes in the outside temperature and atmospheric pressure because air is also enclosed in the upper part. If the internal pressure changes in this way, the container may be deformed or the contents may be ejected when the container is opened, so that some kind of pressure relief structure is required.

An example of a container capable of releasing the internal pressure generated in this way is described in Japanese Utility Model Laid-Open No. 62-6259.

This is a cap attached to the container, as shown in FIG.
The valve body 51 is provided inside the 50, and this valve body 51 is a flow port.
A columnar body 53 is erected from the center of a disc portion having 52, a discoid valve 54 is provided on the top of the columnar body 53, and the outer periphery of the discoid valve 54 is brought into close contact with the cap 50.

Then, by pressing the container, the disc-shaped valve 54 is bent upward so that the contents can be poured out. Further, the disk-shaped valve 54 also serves as an air vent when the internal pressure of the container rises.

[Problems to be solved by the device]

However, in the above-mentioned conventional one, in order to prevent invasion of dust and the like from the pouring hole when not in use, the cap 50 further needs an outer lid for covering the pouring hole. There is a risk of becoming. Furthermore, if the outer lid is provided, it becomes difficult for the internal pressure to escape.

The present invention has been made in view of the above-mentioned matters, and an technical object thereof is to provide a liquid pouring container capable of releasing the internal pressure of the container with a simple structure and also preventing dust and the like from entering.

[Means for Solving the Problems]

The present invention has the following configuration in order to solve the above technical problems.

That is, a spout hole 3 is provided in the mouth tube portion 2 of the container 1, and a flexible spout hole closing portion 5 for closing the spout hole 3 is provided in a cap 4 fitted in the mouth tube portion 2. Form. In addition, the fitting here is a concept including screwing.

The lid cap 4 and the mouth tube portion 2 are respectively formed with close contact surfaces 6 and 7 which are closely engaged with each other and define the tightening end point of the cap 4.

At least one of the contact surfaces 6 and 7 is a rough surface formed by fine irregularities capable of discharging the gas in the cap 4 to the outside of the cap 4. At the end of tightening of the cap 4, the pouring hole 3 is normally closed by the pouring hole closing portion 5, and when the pressure of the gas in the container 1 rises, the pouring hole closing portion 5 is caused by this gas pressure. The liquid pouring container was made by flexibly moving away from the pouring hole 3 so that the gas pressure can be released.

[Action]

The cap 4 is provided with a flexible pouring hole closing portion 5 for closing the pouring hole 3, and the cap 4 and the mouth tube portion 2 are provided.
At least one of the contact surfaces 6 and 7 formed so as to closely engage with each other to define the tightening end point of the cap 4, and fine concavities and convexities capable of discharging the gas inside the cap 4 to the outside of the cap 4. Since the inner pressure of the container is formed, the internal pressure of the container is discharged by bending the pouring hole closing portion 5, and further, is discharged through the unevenness. Further, since the unevenness is minute, there is no fear that dust or the like will enter.

〔Example〕

An embodiment of the present invention will be described with reference to FIGS. 1 and 2.

The container 1 is made of a flexible synthetic resin, and a spout hole 3 is formed in the top plate surface of the mouth tube portion 2. A cap 4 is screwed into the mouth tube portion 2, and a top plate portion of the cap 4 is formed in a downward convex dome shape to form a pouring hole closing portion 5. The pouring hole closing portion 5 is flexible and closes the pouring hole 3 when the cap 4 is fastened.

The cap 4 and the top plate portion of the mouth tube portion 2 are respectively formed with contact surfaces 6 and 7 which are closely engaged with each other when the cap 4 is fastened to determine the tightening end point of the cap 4. Here, at the end point of tightening the cap 4, the spout hole 3 is normally closed by the spout hole closing portion 5. Then, when the pressure in the container 1 rises in this state, the pouring hole closing portion 5 bends upward due to this pressure and separates from the pouring hole 3, so that the pressure of the gas in the container 1 can be released. , The tightening end point is set in position. The contact surface 7 on the top plate side of the mouth tube portion 2 is a rough surface formed by fine irregularities.

This rough surface is for discharging the gas in the cap 4 to the outside of the cap 4. When the pressure in the container 1 increases, the pouring hole closing part 5 is first pushed up by the internal pressure, and the pressure is the same as the cap 4 and the mouth. It is applied to the outer peripheral portion of the tubular portion 2. However, the contact surfaces 6 and 7 are not in close contact with each other due to the rough surface, and excess pressure is discharged from here.

It is sufficient that at least one of the contact surfaces 6 and 7 is a rough surface, and in other words, a matte pattern or radial fine irregularities are formed so that the contact surfaces 6 and 7 do not completely adhere to each other so that air can flow out. It should be formed.

[Effect of device]

According to the present invention, the excess pressure in the container can be released without providing a special air circulation mechanism. Therefore, there is no fear that the cost will increase. Further, since the air flow passage is extremely narrow, dust does not enter from the outside.

[Brief description of drawings]

1 and 2 show an embodiment of the present invention, FIG. 1 is an exploded perspective view, FIG. 2 is a side view with a partial section, and FIG. 3 is a sectional view showing a conventional liquid pouring container. Is. DESCRIPTION OF SYMBOLS 1 ... Container, 2 ... Mouth tube part, 3 ... Pouring hole, 4 ... Cap, 5
... Pouring hole closing part, 6, 7 ... Close contact surface.

Claims (2)

[Scope of utility model registration request] 1. A flexible spout hole closing means for providing a spout hole 3 in a mouth tube portion 2 of a container 1 and closing the spout hole 3 in a cap 4 fitted in the spout tube portion 2. A portion 5 is formed, and the cap 4 and the mouth tube portion 2 are respectively formed with close contact surfaces 6 and 7 which are closely engaged with each other and define the tightening end point of the cap 4, and at least one of the close contact surfaces 6 and 7 is formed. One of the contact surfaces is a rough surface formed by fine irregularities capable of discharging the gas in the cap 4 to the outside of the cap 4, and the tightening end point of the cap 4 is
Normally, the pouring hole 3 is closed by the pouring hole closing portion 5, and when the pressure of the gas in the container 1 rises, the pouring hole closing portion 5 is bent by the gas pressure so as to separate from the pouring hole 3. A liquid pouring container characterized by being positioned so that the pressure of gas can be released. 2. The liquid pouring container according to claim 1, wherein the cap 4 is screwed into the mouth tube portion 2.