JP2010149935A - Liquid container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid container which comprises an air intake mechanism to prevent pulsation during discharge and can decrease the amount of residual liquid. <P>SOLUTION: In the liquid container, an air reservoir 3 forms an air accumulation in a ringlike space expanding larger than the flow passage cross-section of a narrow part 4, and the narrow part is configured to be a circular opening formed in such a manner that a peripheral wall between the air reservoir and a container body protrudes inwardly. Further, on the peripheral wall for the narrow part almost opposite to a gripper in which an air inlet is formed, a residual liquid circulation groove 6 is provided for serving as a flow passage which penetrates the peripheral wall, successively connects the container body 10 with the air reservoir through its inner surface, and divides an air layer formed in the air accumulation. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a liquid container that includes an intake mechanism to prevent pulsation during discharge and reduce residual liquid.

In the conventional liquid container, when the liquid filled in the container is poured out, the following configuration is adopted in order to secure an intake port and prevent pulsation during the dispensing.
(1) A method of securing a suction port by providing a partition plate or a protrusion for separating the discharge port and the suction port at a part of or around the suction discharge port so that the suction port is not blocked when pouring. A configuration for preventing pulsation during dispensing is known.
However, in the above-described configuration, the partition plate or the projection that separates the discharge port from the intake port becomes an obstacle when the driving blow pin is inserted in the container forming step, and it becomes difficult to form by a normal forming method.
In the step of filling the container with the content liquid, the filling nozzle is inserted to the inside of the container, but there is a possibility that the mouth partition plate or the projection may become an obstacle and cause trouble.
(2) Two ports are provided in the upper part of the container, both are cap-capped, both caps are removed when the contents are poured out, one is used as a discharge port, and the other is used as an intake port to prevent pulsation The configuration is known.
However, in the above configuration, it takes time and effort to remove and cap the two caps when using the container, and there is a disadvantage that the liquid is spilled from the spout due to pulsation if the dispensing operation is performed without removing the cap. Leading up.
(3) Forming a widened portion that is larger than the mouth portion below the mouth portion of the container, and forming a discharge shape and a suction shape by providing a protrusion shape or a throttle shape on the main body side below the widened portion. In addition, a configuration is known in which a mechanism for supplying air to the air space in the container through the internal liquid is provided to prevent pulsation during pouring (Japanese Patent Publication No. 7-2500).
However, in the above configuration, since the discharge port and the intake port are arranged at close positions, the effect of the pulsation prevention function is reduced when the container is poured out in a direction in which the axis of the discharge port is inclined. In addition, since it is a mechanism for supplying air to the air space in the container through the internal liquid, design restrictions are imposed on the shape of the discharge port, intake port, and handle of the mouth.
In addition, there is a problem that the air escape passage becomes narrow and the discharge time becomes longer, and further, the remaining liquid remains in the container after tilting due to the shape of the mouth.
(4) Discharge port and intake port are separated by attaching another part with intake function to the normal container port, and air is supplied into the container by the secured intake port and pulsation at the time of dispensing A configuration for preventing this is known.
In the said structure, since it becomes a 2 piece container, there exists a problem that a shaping | molding / assembly process increases and the cost of a container will become high.
(5) A mechanism that connects to the intake port inside the handle by providing an air ring (air reservoir around the discharge port) below the container port. A configuration is known in which an air flow path that reaches the main body through the above is formed to prevent pulsation.
However, when the above configuration is an air ring shape that can obtain a pulsation effect, a large amount of residual liquid remains in the container at an angle (100 to 120 °) that is normally held by the handle and tilted. In addition, when trying to pour out the remaining liquid, the handle portion is changed and tilted, which may hinder the ease of use of the container and becomes difficult when the shape of the pour destination is limited.
Japanese Patent Publication No.7-2500 FIGS. 2 to 4

The problem to be solved by the present invention is that, when the content liquid is poured out from the container by tilting the container, the pulsation of the discharged content liquid can be effectively prevented and the container is tilted and discharged. Another object of the present invention is to provide a container capable of reducing the remaining amount of the content liquid.
Another object of the present invention is to provide a container that has a high degree of freedom in designing the shape of the discharge port, the intake port, and the handle portion of the mouth portion, and can be shaped according to the application.

In order to solve the above-mentioned problems, the present invention provides
A cylindrical mouth portion that protrudes to the top of the container body and serves as a discharge port for the content liquid filled in the container, and has a flow passage cross section that is the same as or larger in diameter than the flow passage cross section of the mouth portion below the mouth portion. A handle portion that has a formed air reservoir and a hollow air flow path that communicates with an air inlet formed on one side of the air reservoir, and is spanned between the air reservoir and the container body. And a liquid container having a constricted portion formed in a small-diameter channel cross section that is substantially concentric with the channel cross section of the air reservoir below the air reservoir,
The air reservoir forms an air reservoir by a ring-shaped space that spreads from the flow path cross section of the throttle portion,
The throttle part consists of a circular opening formed by projecting the peripheral wall between the air reservoir and the container body inward,
Air that passes through the peripheral wall that forms the throttle portion at a position substantially opposite to the handle portion in which the air inlet is formed and that has an inner surface that connects the container body and the air reservoir in series, and is formed in the air reservoir. A residual liquid flow groove serving as a flow path for dividing the layer is provided.
In the invention of claim 2,
The handle portion extends while inclining downward from the air reservoir portion in a direction away from the mouth portion, and is connected to a midway position in the height direction of the container body,
A gripping hole extending along the handle portion is formed between the handle portion and the container main body.

The liquid container of the present invention can achieve the following effects.
(1) It is possible to prevent pulsation when the content liquid is poured out of the container.
(2) Even when the container is tilted in a direction in which the axis of the discharge port is inclined, the pulsation preventing effect at the time of dispensing is not reduced.
(3) The degree of freedom in designing the shape of the discharge port, the intake port, and the handle portion of the mouth portion is high, and the shape can be made according to the application.
(4) While having the effect of preventing the pulsation, the remaining amount of the content liquid when the container is tilted can be reduced.

  Hereinafter, a preferred embodiment when the liquid container of the present invention is applied to a volume reduction bottle will be described with reference to the drawings.

  The volume-reducing bottle 1 shown in FIGS. 1 to 5 has a mouth part 2 that protrudes outward from the container main body 10 filled with a liquid, in this embodiment, and serves as a discharge port 2a, and a base end side (upstream in the discharge direction). The air reservoir 3 formed on the air reservoir 3, the air inlet 8 a formed in the air reservoir 3, the handle 8 that forms the air flow path L 2 communicating with the air inlet 8 a, and the air reservoir 3. The throttle part 4 is formed on the base end side (upstream side in the discharge direction) of the liquid and the residual liquid circulation groove 6 is formed in the throttle part 4.

[Mouth]
The mouth portion 2 is formed in a cylindrical shape having a screw to which a cap (not shown) is screwed on the outer periphery, protrudes to one side of the upper portion of the container body 10, and is used for pouring the content liquid in the container body 10. It is a discharge port 2a.

[Air reservoir]
An air reservoir 3 is formed so as to be connected to the base end side of the mouth 2.
In the case of the illustrated example, the air reservoir 3 has a tubular shape formed with a diameter larger than that of the mouth portion 2, and in the present embodiment, has a substantially octagonal prism shape.

[Intake port]
An intake port 8 a is opened on one side surface of the air reservoir 3.
The intake port 8a is connected to the air reservoir 3 without narrowing the flow path and without being restricted by a partition plate.

[Grip part]
As shown in FIGS. 4 and 5, the handle portion 8 is formed of a tubular body having a hollow air flow path L <b> 2 communicating with the intake port 8 a in substantially the same cross section, and the air reservoir portion 3 and the container body 10. Between the other and the other.
The air flow path L2 is formed of a hollow portion formed over the entire length of the handle portion 8, and introduces air to the opposite side that is separated from the discharge side of the container body 10 when the content liquid is discharged.
In the figure, 7 is a hole formed in the container body 10 for grasping the handle portion 8.

[Aperture section]
At the base end of the air reservoir 3, a throttle portion 4 formed in a flow path narrower than the flow path of the air reservoir 3 is provided.
In the case of the illustrated example, the throttle portion 4 is formed below the air reservoir portion 3 and in a channel cross section that is concentric with the channel cross section of the air reservoir portion 3 and has a small diameter.
In the present embodiment, a circumferential wall between the air reservoir 3 and the container body 10 is bent so as to protrude inward to form an annular throttle part forming wall 4a, and the central part formed by the throttle part forming wall 4a The circular opening is used as the aperture 4.
One of the container main bodies 10 is connected by being expanded through the throttle portion 4.

[Container body]
The container body 10 has a first opening 10a connected to the mouth part 2 in which one of the upper parts is formed with the discharge port 2a, and a second opening 10b connected to the air flow path L2 of the handle part 8 on the other side. Yes.

[Pulsation prevention]
Since it consists of the said structure, when a volume reduction bottle is tilted in the direction which inclines the axis line of the opening | mouth part 2 and a content liquid is discharged, an air pool will be formed by the surrounding ring-shaped space.
Thereby, as shown in FIGS. 4 and 5, an air layer E is generated inside the air reservoir 3.
Since the constriction part 4 that restricts the discharge flow is formed below the air reservoir 3, the cross-section of the liquid content is once narrowed by the constriction part 4, and the cross-section of the flow path is widened by the large-diameter air reservoir 3. And then flows out to the discharge port 2a of the mouth part 2.

  That is, due to the cross-sectional area ratio and volume ratio of the throttle portion 4 and the air reservoir portion 3, an air layer E is formed in the air reservoir portion 3 even during discharge, and the air introduction path L1 from the discharge port 2a to the intake port 8a is formed. Since it is ensured and connected to the air flow path L2, pulsation can be prevented.

In the present embodiment, an air inlet 8a is formed on one side surface of the air reservoir 3, and the air flow passage cross section is not restricted. Therefore, the air accumulated in the air reservoir 3 can easily flow into the air intake 8a. The road is less likely to be blocked.
Therefore, even when the container body 10 is tilted, the pulsation preventing effect is ensured.

In the case of the structure of the illustrated example, the air reservoir 3 discharges outward and the handle portion 8 is continuous, so that it does not interfere with the blow pin insertion process at the time of container molding, and the mouth portion at the time of blow pin insertion Insufficient air inlet obstruction due to sagging is unlikely to occur, and molding is easy and reliable.
In the filling process of the content liquid, the filling nozzle is easy to insert because the discharge port is wide.

On the other hand, with such a shape in which only the air reservoir 3 is provided, a large amount of residual liquid remains in the container body 10 at an angle (about 100 to 120 °) in which the handle portion 8 is held and tilted.
If the remaining liquid is to be poured out, the handle portion 8 is moved and tilted further, the usability of the container body 10 is impaired, and it becomes difficult to pour out when there is a restriction on the shape of the discharge destination cup or the like. .

[Residual liquid flow channel]
Therefore, in the present embodiment, a residual liquid circulation groove 6 is provided in the throttle portion 4 as clearly shown in FIGS. 4 and 6 to 8.
The residual liquid circulation groove 6 penetrates through the throttle portion forming wall 4a so as to be continuous with the side wall surface of the air reservoir portion 3 at a position facing the handle portion 8 in which the intake port 8a is formed, and the inner surface thereof extends from the container body 10. It consists of a channel-shaped flow path connected to the air reservoir 3.

Therefore, when the container main body 10 is tilted in the direction in which the axis of the mouth portion 2 is inclined, the throttle portion forming wall 4a which is the inner peripheral wall of the throttle portion 4 protrudes in a partition shape between the container main body 10 and the container main body 10. Since the residual liquid circulation groove 6 connects the container body 10 and the air reservoir 3 in substantially the same plane, the residual liquid partitioned by the inner peripheral wall of the throttle part 4 does not stagnate in the throttle part 4, and the residual liquid circulation groove 6 flows into the air reservoir 3 and is smoothly discharged from the mouth 2 to the outside.
As a result, a liquid flow F1 from the opening of the throttle unit 4 and a liquid flow F2 passing through the residual liquid circulation groove 6 are generated in the air reservoir 3 (see FIG. 4B).

Then, the flow F1 from the throttle portion 4 forms an air layer E in the air reservoir 3 due to the difference in diameter with the discharge port 2a as described above.
On the other hand, at the same time, the liquid flow F2 from the residual liquid circulation groove 6 divides the air layer E of the air reservoir 3 in the extending direction of the residual liquid circulation groove 6, and the divided air layer E is indicated by a dotted line in FIG. As shown, it is guided to the air introduction path L1.
Thereby, the remaining amount of the content liquid when the container body is tilted can be reduced while having the effect of preventing pulsation.

In the above embodiment, the throttle portion is formed in an annular shape, but it may be configured such that the flow path is narrowed between the container main body and the air reservoir portion that are downward when discharging.
In addition, it goes without saying that various design changes can be made without departing from the scope of the present invention.

By using the structure for preventing the mouth pulsation and reducing the residual liquid, the same effect can be obtained even if the capacity of the container, the shape of the container body, the shape of the handle, etc. are changed.
Further, it is particularly useful for a thin-walled volume-reducing bottle in which the body of the container is easily deformed and a pulsation phenomenon is likely to occur when the content liquid is poured.

It is a side view of the volume reduction bottle as an example of a liquid container. It is the same front view. It is the same top view. (A) The schematic diagram of the principal part explaining the flow of the air at the time of discharge, (b) It is explanatory drawing which shows the flow of the liquid which flows into an air reservoir. It is principal part sectional drawing which shows the relationship between an air reservoir and the air flow path of a handle part. It is a principal part front view which shows a residual liquid distribution groove | channel. (A) is sectional drawing of the VII-VII line of FIG. 6, (b) is sectional drawing of VIII-VIII of FIG. It is an upper part enlarged view of a container main body.

DESCRIPTION OF SYMBOLS 1 Volume reduction bottle 2 Port part 2a Discharge port 3 Air reservoir part 4 Restriction part 4a Restriction part formation wall part 6 Residual liquid flow groove 7 Hole 8 Handle part 8a Intake port 10 Container body L1 Air introduction path L2 Air flow path

Claims (2)

A cylindrical mouth portion that protrudes to the top of the container body and serves as a discharge port for the content liquid filled in the container, and has a flow passage cross section that is the same as or larger in diameter than the flow passage cross section of the mouth portion below the mouth portion. A grip portion that has a formed air reservoir and a hollow air flow path that communicates with an air inlet formed on one side of the air reservoir, and is spanned between the air reservoir and the container body. And a liquid container having a constricted portion formed in a small-diameter channel cross section that is substantially concentric with the channel cross section of the air reservoir below the air reservoir,
The air reservoir forms an air reservoir by a ring-shaped space that spreads from the flow path cross section of the throttle portion,
The throttle part consists of a circular opening formed by projecting the peripheral wall between the air reservoir and the container body inward,
Air that passes through the peripheral wall that forms the throttle portion at a position substantially opposite to the handle portion in which the air inlet is formed, and that the inner surface connects the container body and the air reservoir portion in series, and is formed in the air reservoir. A liquid container comprising a residual liquid flow groove serving as a flow path for dividing a layer. The handle portion extends while inclining downward from the air reservoir portion in a direction away from the mouth portion, and is connected to a midway position in the height direction of the container body,
The liquid container according to claim 1, wherein a gripping hole extending along the handle portion is formed between the handle portion and the container main body.

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