JP2000079946A - Liquid container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the need for operation of opening/closing an air inlet opening to simplify the operation of pouring liquid by providing only one opening to be a pouring port on an upper part of a container body. SOLUTION: The liquid container wherein a container body 1 is tilted whereby liquid W inside can be poured out of a pouring port 2 includes a string of an air inlet passage 4 provided in the container body 1, which reaches the vicinity of the highest site in the container body at the time of initially pouring the liquid. Thus no pulsating flow occurs in the poured liquid even in the liquid container equipped on an upper part of the container body 1 with only one opening which is to be the pouring port 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid container in which a container body is tilted to inject liquid from an upper spout.

[0002]

2. Description of the Related Art In a liquid container such as a plastic bottle, an oil can, a plastic tank or a glass bottle, only one opening serving as a spout is provided at the top, and the container body is tilted to inject the liquid. In the case of liquid injection through the mouth, the pulsating flow occurs during the initial liquid injection (when a large amount of liquid is contained in the container body) due to the relatively small injection hole, and the liquid flows. A bouncing phenomenon occurs. In other words, in a liquid container having only one opening serving as a spout, it is necessary to introduce an amount of air commensurate with the amount of liquid to be injected into the container body at the time of pouring. In this case, when the container body is tilted, the liquid inside blocks the entire spout, and a breathing phenomenon (pulsating flow) occurs at the time of introducing air, and a liquid splash phenomenon occurs. In the initial injection, if the injection is performed in a state where the entire injection port is not blocked (a state in which a gap for introducing air is provided on the upper side of the injection port), the pulsating flow does not occur. It is necessary to carefully tilt the container body little by little while observing the state of liquid injection from the container, and the liquid injection work is very troublesome.

[0003] In the oil can, a small hole for introducing air is made in a portion of the upper plate of the oil can opposite to the spout in order to prevent a pulsating flow at the time of initial injection. . However, when the small hole for air introduction is vacated in this way, there is a problem that the oil leaks from the small hole when the oil can is overturned carelessly, and the used oil can has to be discarded. (Cannot be reused).

[0004] Further, some polytanks are provided with an opening for introducing air separately from a spout, and the opening is opened and closed by a lid. However, in this case, it is necessary to provide an air introduction opening separately from the spout and to provide a lid, which increases the production cost, and requires two lids for the spout and the air introduction every time the pouring operation is performed. Has to be opened and closed, which is troublesome.

[0005] Some known documents include, for example, Japanese Patent Application Laid-Open
As shown in Japanese Patent Application Laid-Open No. 0-129703, a partition for partitioning an inlet portion into upper and lower portions is provided, and one opening (an opening on the lower side during liquid injection) defined by the partition is used as an inlet. In addition, an air inlet is provided on the other side. However, in this known device, when the container is tilted until the spout is completely closed by the liquid to be spouted during the pouring, there is no air introducing function from the air introducing port, and therefore, when the pouring is performed, Pulsation cannot be prevented.

In view of the above-mentioned conventional problems, the present invention is directed to a liquid container which is tilted so that liquid is injected from a spout, in which only one opening serving as a spout is formed at an upper portion of a container body. The purpose of the present invention is to prevent the pulsating flow at the time of liquid injection even if it is present, to completely seal the inside of the container body when the spout is covered, and to allow the container body to be used repeatedly. It is a thing.

[0007]

The present invention has the following structure as means for solving the above-mentioned problems. That is, the invention of the present application is directed to a liquid container in which only one opening serving as a spout is provided at the upper part of the container main body, and the liquid inside can be discharged from the spout by tilting the container main body. .

The invention of the present application is characterized in that in the above-mentioned liquid container, a series of air introduction passages are provided in the container main body from the inside of the spout to the vicinity of the highest part in the container main body at the time of initial liquid injection.

The air introduction passage may have a relatively small diameter, and is provided along the spout portion and the inner surface of the container body. Further, the inlet of the air introducing passage can be closed by covering the inlet with a lid. The inlet of the air introduction passage may be opened at a position closer to the upper side of the inlet during the liquid injection operation. Also, the inner end of the air introduction passage is tilted at the time of initial liquid injection,
It is positioned so as to open near the highest part in the container body.

As the liquid container of the present invention, a plastic bottle, an oil can (made of sheet metal), a glass bottle having a plastic tank and the like can be applied. In the case of a synthetic resin molded container such as a PET bottle or a plastic tank, the air introduction passage may be integrally molded when the container body is manufactured. On the other hand, oil can (made of sheet metal)
Then, before assembling the upper plate to the upper portion of the side peripheral plate, an air introduction passage (member) is previously attached across the lower surface of the upper plate and the inside of the spout, and the upper plate with the air introduction passage is attached to the side peripheral plate. It is good to caulk. Further, in the glass bottle, the air introduction passage may be integrally formed or another member may be attached at the time of molding.

In the liquid container of the present invention, when the liquid is injected, the container body is tilted with the injection port opened.
Even if the entire spout is closed with the liquid to be poured, an amount of outside air corresponding to the amount of liquid to be injected is introduced into the air reservoir (near the highest part) in the container body through the air introduction passage. No pulsation occurs in the liquid to be dispensed. In addition, if the spout is covered with a lid, the inside of the container body can be completely sealed.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A liquid container according to an embodiment of the present invention will be described with reference to FIGS. 1 to 7. FIGS. 1 to 3 show a first embodiment of the present invention, and FIGS. FIGS. 6 and 7 show a liquid container according to the third embodiment.

The liquid container of the first embodiment shown in FIGS. 1 to 3 employs a plastic bottle for accommodating a beverage W such as coffee, juice, tea and the like. In this liquid container (pet bottle), a lid 3 is screwed into a spout 2 provided at the upper center of the container body 1. A series of air introduction passages 4 are formed in the container body 1 in a length range from the spout 2 portion to the shoulder 7 of the container body 1. In the first embodiment, since the container body 1 is molded from a synthetic resin, the air introduction passage 4 is also integrally molded.

An inlet 4 serving as an air inlet of the air inlet passage 4
Reference numeral 1 denotes an opening which is flush with the spout 2 on one side surface of the spout 2. Also, the inner end 42 of the air introduction passage 4
Is opened near the highest part in the container body 1 at the time of initial liquid injection as shown in FIG.

In the first embodiment, on the outer surface of the container body 1 on the side opposite to the position where the air introduction passage 4 is formed,
A liquid injection direction display section 6 (arrow in the illustrated example) is provided. Then, at the time of liquid injection, the container main body 1 is tilted with the liquid injection direction display portion 6 facing downward, so that the air introduction passage 4 is correctly directed upward. In this embodiment, only one air introduction passage 4 is formed in the container main body 1. However, in other embodiments, the same air introduction passage 4 is provided at two opposing positions.
Alternatively, four tubes may be formed at 90 ° intervals, and the inside of the container body 1 may be formed as a double wall, and an annular air introduction passage may be formed between the double walls.

In the liquid container (pet bottle) according to the first embodiment, when the lid 3 is screwed, the inlet 41 of the air introducing passage 4 is closed together with the inlet 2. Then, at the time of liquid injection, the lid 3 is removed, and the container main body 1 is tilted so that the air introduction passage 4 is located on the upper side as shown in FIG. Then, even if the entire injection port 2 is blocked by the liquid W to be poured (the entire injection port is easily closed at the time of initial liquid injection), the introduction port 4 is closed.
The air A introduced from 1 passes through the air introduction passage 4 and is introduced into the air reservoir 5 in the container body 1 from the opening at the inner side end 42 thereof. When the air A is directly introduced into the air reservoir 5 in the container body 1 as described above, the spout 2
A pulsating flow (liquid splash) is not generated in the liquid Wa poured out from the container, the liquid can be poured smoothly, and the liquid does not easily run out even if the liquid receiving container 9 is a small-mouthed container such as a cup.
Such an air introduction function is performed not only at the time of initial liquid injection but also until all the liquid W in the container body 1 is discharged. Further, if the lid 3 is screwed in after the injection, the inlet 41 can be closed at the same time, and even if the air introducing passage 4 is provided, the inside of the container body 1 can be completely sealed.

In the second embodiment shown in FIGS. 4 and 5, an oil can made of sheet metal is used as the liquid container. In this liquid container (oil can), a spout 2 is formed near one corner of the upper plate 10. The spout 2 is closed by a lid 3.

The container body 1 according to the second embodiment includes:
A series of air introduction passages 4 are formed from the spout 2 along the lower surface of the upper plate 10 to a position facing the spout 2 (near the highest part at the time of initial liquid injection). In addition, this second
In the embodiment, since the oil container (made of sheet metal) is used as the liquid container, the air introduction passage 4 is separately attached (for example, welded) to the container body 1 (the lower surface of the upper plate 10). That is, the upper plate 10 of this oil can is integrated with the side peripheral plate 11 by caulking, but the air introduction passage 4 is previously attached to the lower surface of the upper plate 10 and the oil introduction passage 4 is provided. The upper plate 10 is caulked to the upper edge of the side peripheral plate 11.

Liquid container (oil can) of the second embodiment
However, at the time of liquid injection, the container body 1 is tilted so that the injection port 2 is located on the lower side as shown in FIG. Then, at this time, an amount of air A corresponding to the amount of liquid injected from the inlet 2 (Wa)
Is introduced from the introduction port 41, further passes through the air introduction passage 4, and is introduced into the air reservoir 5 from the inner end 42. Therefore, even at the time of the initial injection, the pulsating flow does not occur in the liquid Wa discharged from the injection port 2. Further, in the oil can of the second embodiment, when the liquid inside becomes empty, it can be collected and reused, or the liquid W can be replenished and used.

In the third embodiment shown in FIGS. 6 and 7, a poly tank is used as the liquid container. Only one opening serving as the spout 2 is formed in the upper part of this plastic tank. In addition, the spout 2
Is provided with a series of air introduction passages 4 reaching the vicinity of the highest part in the container body 1 at the time of initial liquid injection, but since the container body 1 is molded with a synthetic resin, the air introduction passages 4 are also formed at the same time. It is integrally molded. In the third embodiment, the liquid guide tube 21 connected to the inlet 2 is used.
The base end of the liquid guide tube 21 is connected to the spout 2 in a watertight state by screwing the lid 3 around the outer periphery of the spout 2. In addition, an air passage 22 that can communicate with the air introduction passage 4 on the container body 1 side is formed at the base end of the liquid guide tube 21. That is, the proximal opening 23 of the air passage 22
Can communicate with an introduction port 41 opened in the injection port 2, while a front opening 24 of the air passage 22 is open to the outside air at a position slightly ahead of the lid 3. Then, when the lid 3 is screwed into the outer periphery of the spout 2, the air passage 2 on the liquid guide tube 21 side is formed.
Inlet 41 whose base opening 23 is open in spout 2
The air passage 22 on the liquid guide tube 21 side and the air introduction passage 4 on the container body 1 side are continuous with each other. In this state, the front opening 24 of the air passage 22 on the liquid guide tube 21 side is located on the upper side.

In the liquid container (poly tank) of the third embodiment, as shown in FIG.
Can be injected in a state where is continuously connected to the injection port 2. In this case, the air passage 22 on the liquid guide tube 21 side communicates with the air introduction passage 4 on the container body 1 side, and when the container body 1 is tilted, it passes through the inlet 2 and the liquid guide tube 21. Air A corresponding to the amount of liquid to be dispensed flows from the front opening 24 to the air passage 22.
The air is introduced into the air reservoir 5 (near the highest portion at the time of initial liquid injection) from the inner end 42 through the air introduction passage 4. Further, in the plastic tank of the third embodiment, the liquid can be directly injected from the inlet 2 by tilting the container body 1 with the lid 3 (and the liquid guide tube 21) removed. In this case, air is introduced into the air reservoir 5 through the air introduction passage 4 from the opening 41 of the inlet 2.

In the plastic tank of the third embodiment, the conventional air introduction opening and its lid are not required on the container body 1 side, so that the manufacturing cost is reduced and the opening / closing operation of the air introduction opening is not required. Therefore, the operation during the injection operation is simplified.

Further, in another embodiment, a glass bottle can be used as the liquid container. In this case, the air introduction passage may be integrally formed at the time of forming the bottle, or another member may be separately attached.

[0024]

The liquid container of the present invention has the following effects.

(1) 1 serving as a spout 2 is provided at the upper part of the container body 1
Since only one opening is required, the manufacturing cost is lower than that using a conventional air introduction opening and its lid, and there is no need to open and close the air introduction opening. This has the effect of being simple.

(2) The container body 1 is provided with a series of air introduction passages 4 extending from the spout 2 to the vicinity of the highest part in the container body 1 at the time of initial liquid injection. Even if the opening is not formed, there is an effect that the pulsating flow at the time of liquid injection can be surely prevented.

(3) When the liquid container of the present invention is applied to an oil can, a pulsating flow does not occur even if a small hole for introducing air is not formed in the oil can, so that the oil can is reused many times. There is an effect that can be.

[Brief description of the drawings]

FIG. 1 is a liquid container (pet bottle) according to a first embodiment of the present application.
FIG.

FIG. 2 is a view of the liquid container (pet bottle) of FIG.

FIG. 3 is a cross-sectional view showing a state in which the liquid container (pet bottle) in FIG. 1 is injected.

FIG. 4 is a perspective view of a liquid container (oil can) according to a second embodiment of the present application.

FIG. 5 is a sectional view taken along line VV of FIG. 4;

FIG. 6 is a perspective view of a liquid container (polytank) according to a third embodiment of the present application.

FIG. 7 is a cross-sectional view showing a liquid injection state of the liquid container (poly tank) of FIG.

[Explanation of symbols]

1 is a container body, 2 is a spout, 3 is a lid, 4 is an air introduction passage,
5 is an air reservoir, 41 is an inlet, 42 is an inner end,
W is a liquid.

Claims (1)

[Claims] 1. An upper portion of a container body (1) is provided with only one opening serving as a spout (2), and by tilting the container body (1), an internal liquid (W) is supplied to the spout (2). 2) a liquid container which can be poured out from the container body (1), wherein a series of liquids reaching from the inside of the spout (2) to the vicinity of the highest part in the container body (1) at the time of initial liquid injection. A liquid container provided with an air introduction passage (4).