JP2023076080A - Cap with liquid return mechanism - Google Patents

Abstract

To provide a cap with a liquid return mechanism that improves the dripless property and reduces content residue in the cap while pouring out the content.SOLUTION: A cap 1 includes: a cap body 10 having a top plate 11 and a cylindrical peripheral wall 12 hanging downwards from the periphery of the top plate; and a lid 20 attached to the top of the cap body, the cap body being attached to a container by engaging with the tip of the container mouth. A cylindrical wall 13 hanging downwards from the top plate is provided, including a plate-like partition wall part 14 that closes the lower end of the cylinder wall, and a pouring cylinder 15 that rises from the partition wall part and has the upper and lower ends opening and communicated. The lid has a liquid stopper pin 21 that fits into the upper end opening of the pouring cylinder when closed, and an opening 17 for liquid return is formed at a predetermined height from the lower end of the cylinder wall.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a cap for containers for liquids such as soft drinks and alcoholic beverages, and more particularly to a cap that is improved in drainability of the contents, such as liquids, and in that residual liquid is reduced.

The cap body and the top lid are connected by a thin hinge, and the hinge cap is equipped with a mechanism that allows the top lid to be opened and closed by rotating the top lid. Because of its convenience, it has been used in particular as a cap for many containers.

In such a hinge cap, the cap body is provided with a sealing plate having a portion to be opened inside the cylindrical side wall, the container opening is fitted to the cylindrical side wall, and the upper end portion of the cylindrical side wall , and the upper lid is hinged so that it can be opened and closed freely. A pouring tube is erected on the upper surface of the sealing plate, and a tearable thin portion is provided around the pouring tube to partition the planned opening portion. is provided with a stanchion with a pull ring at its upper end.

After the top lid is opened, the hinge cap is formed by pulling up the pull ring with a finger to tear the thin portion defining the portion to be opened to form an opening for pouring out the contents. , the contents contained in the container are poured out. For example, Patent Document 1 discloses a hinge cap having such a structure. However, with such a conventional hinge cap, the contents coming out from the inside of the bottle are not easily drained.

On the other hand, as disclosed in Patent Document 2, there is also known a cap having a shape in which the diameter of the opening is made narrower to improve the liquid-drainage, but when the contents are poured out, Since the opening is small, there is a problem that the liquid remains in the liquid reservoir without returning to the inside of the container.

Japanese Patent No. 4156055 Japanese Patent Application Laid-Open No. 2007-320589

The present invention provides a cap used for containers (bottles, paper packs, etc.) for liquids such as soft drinks and alcoholic beverages, which is improved in liquid drainability and liquid residue on the cap when contents are extracted. That is the issue.

In order to solve the above problems, the present invention has a cap body having a top plate, a cylindrical peripheral wall extending downward from the peripheral edge of the top plate, and a lid attached to the top of the cap body. and the cap body is attached to the container with the cap main body engaging with the tip of the container mouth,
A cylindrical wall that hangs in a cylindrical shape from the top plate is provided,
a plate-shaped partition that closes the lower end of the cylindrical wall;
Having a pouring tube that is open and communicated at the upper and lower ends standing from the partition,
The lid has a liquid stop pin that fits into the upper end opening of the pouring tube when closed,
The cap with a liquid return mechanism is characterized in that an opening for liquid return is formed at a position at a predetermined height from the lower end of the cylindrical wall.

In the liquid return mechanism-equipped cap, the lid portion may be connected to the cap body via a hinge so as to be swingable.

In the liquid return mechanism-equipped cap, the cap main body and the lid portion may be separate bodies, and may be provided with a threaded structure to be screwed together.

In the liquid return mechanism-equipped cap, an inner threaded portion that is screwed into the container mouth portion may be provided on the inner surface side of the cylindrical peripheral wall.

In the liquid return mechanism-equipped cap, a fitting portion that is fitted to the mouth portion of the container by plugging may be provided on the inner surface side of the cylindrical peripheral wall.

In the cap with a liquid return mechanism, the opening for liquid return may be provided on the hinge side of the cylinder wall.

ADVANTAGE OF THE INVENTION According to this invention, the cap which improved the drainability when extracting a content, and the content remaining on a cap is obtained.

FIG. 2 is a vertical cross-sectional view of one embodiment of the cap with a liquid return mechanism of the present invention; FIG. 4 is a vertical cross-sectional view of a state in which the lid is closed; The top view which looked at the cap main body from upper direction. Explanatory drawing of the liquid return of the cap with a liquid return mechanism. Explanatory drawing of the liquid return of the modification of the cap with a liquid return mechanism. Explanatory drawing of the aspect which pours out a content from the modification of the cap with a liquid return mechanism. FIG. 4 is a longitudinal sectional view of another form of the cap with a liquid return mechanism of the present invention; FIG. 4 is a longitudinal sectional view of a third embodiment of the cap with a liquid return mechanism of the present invention;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the embodiments described below. Also, in the embodiments shown below, technically preferable limitations are made for carrying out the invention, but these limitations are not essential requirements of the invention. Further, in the following description, the same reference numerals may be given to the same members, etc., and the description thereof may be omitted.

FIG. 1 is a vertical cross-sectional view of one form of a cap with a liquid return mechanism (hereinafter also simply referred to as "cap") of the present invention. The cap 1 of this embodiment has a cap body 10 and a lid portion 20 which are formed by molding plastic resin. FIG. 1 shows a state in which the lid portion 20 is open. The cap main body 10 has a top plate portion 11, which is typically substantially circular, matching the shape of the mouth portion of a container such as a glass bottle, and a peripheral wall 12 that extends downward from the peripheral edge of the top plate portion 11. . The lid portion 20 has a shape that covers the cap body 10, and is connected to the cap body 10 via a hinge 23 so as to be able to swing. It is said that it can be opened and closed freely. Further, a locking portion (not shown) for locking the lid portion 20 and a knob 24 may be appropriately provided on the opposite side of the hinge 23 in the diametrical direction.

The top plate portion 11 is provided with a cylindrical wall 13 that hangs down in a cylindrical shape. The tube 15 is upright. The pouring cylinder 15 has open upper and lower ends and communicates with each other, so that the contents can be poured out through the opening 16 when the cap 1 is attached to a container or the like. Although the cross-sectional shape of the opening 16 is not particularly limited, it is typically circular, and its diameter is appropriately set according to the fluidity of the contents so that the liquid can be drained well. Further, if the vertical cross-sectional shape is a so-called trumpet shape in which the distal end side is widened as shown in the figure, the liquid can be easily drained, and a liquid stop pin 21, which will be described later, can be easily inserted, which is preferable. Moreover, it is preferable that the upper end of the pouring tube 15 protrudes above the top plate portion 11 . The pouring cylinder 15 allows the contents to be poured out with good liquid drainage.

The cylinder wall 13 is also provided with an opening 17 for liquid return at a predetermined height from the partition wall 14 . The height of the opening 17 can be appropriately set according to the fluidity of the contents of the container, and the lower end of the cylindrical wall 13 may be in contact with the partition wall 14 . The shape and size of the container may be appropriately set in consideration of the fluidity of the contents, and may be any shape such as circular or rectangular. The opening 17 may be provided at one location or at a plurality of locations. A specific mode of liquid return will be described later.

The inner surface of the peripheral wall 12 is provided with an inner threaded portion 18 for screwing with the opening of a container or a spout. Fixed. In addition, an inner ring 19 hangs down from the top plate 11 along the inner surface of the opening of the container or the like to prevent the contents from leaking.

As shown in FIG. 2, when the lid 20 is closed, the lid 20 has a liquid stop pin 21 which is fitted into the pouring tube 15 from the upper opening to prevent the contents from spilling out of the pouring tube 15. 22 is installed vertically. The cross-sectional shape of the liquid stop pin 21 is the same as the cross-sectional shape of the opening 16, and is typically circular.

FIG. 3 is a plan view of the cap body 10 viewed from above. A concave portion is formed in the top plate portion 11 by a cylindrical wall 13 hanging down from the top plate portion 11, and a bottom portion thereof is closed by a partition wall portion 14, but an opening provided in a pouring tube 15 standing from the partition wall portion 14 is provided. 16 serves as a spout for contents when attached to a container or the like. A concave portion formed in the top plate 11 by the cylinder wall 13 and the partition wall 14 serves as a liquid pool for receiving the so-called dripping of the contents adhering to the outer surface side of the pouring cylinder 15 when the contents are poured out. It is the part that becomes. The drip accumulated in the liquid pool can be discharged from the opening 17 and returned to the inside of the container.

FIG. 4 explains the mode of liquid return when liquid dripping actually occurs. When the contents are poured out from the pouring tube 15 by tilting the container, some of the contents adhere to the vicinity of the tip of the pouring tube 15, but when the container is erected, part of the adhered contents is removed. The content 32 returns to the inside of the container along the inner surface of the pouring tube 15, and the other part flows down along the outer surface of the pouring tube 15 and is stored in the liquid pool. When the amount of stored content exceeds the height of the opening 17, the content 33 flows out from the opening 17 and quickly returns to the container. Therefore, in the cap 1 of the present embodiment, even if dripping occurs on the outer surface side of the pouring tube 15 during pouring, the amount of the content stored in the cap 1 is kept above the height of the opening 17. Therefore, the liquid can be quickly returned without causing the liquid pool to overflow.

FIG. 5 is an explanatory diagram of the liquid return of a modified example of the cap with a liquid return mechanism according to the present embodiment. In this example, the opening 17 is provided particularly on the side of the hinge 23, but other than that, it is the same as the embodiment shown in FIG. 4, so the description is omitted.

When pouring out the contents from the container fitted with the cap shown in FIG. 5, the lid is usually tilted so that the farthest side from the hinge 23 faces downward as shown in FIG. 6 so that the lid does not get in the way. be done. Therefore, when the content 34 is poured out from the opening 16 of the pouring tube 15, the opening 17 is located above the pouring tube 15, so there is a risk that the content 34 will flow out from the opening 17 at the same time. Less is. However, even if the contents flow out from the opening 17, the contents will return to the liquid pool if the container is upright, and can be returned to the inside of the container through the opening 17, so that a large amount of liquid pool will not occur. do not have.

FIG. 7 is a longitudinal sectional view of another form of the cap with liquid return mechanism of the present invention. In the cap 2 of this embodiment, the engagement with the mouth portion of the container is in the form of capping fitting. That is, a fitting projection 18b that fits into the fitting projection 36 provided on the container mouth portion 35 is provided on the inner surface side of the peripheral wall 12 of the cap body 10b. Since the cap with a liquid return mechanism of the present invention is formed by molding a plastic resin, it can be easily fitted over the fitting protrusion 36 of the container opening 35 .

FIG. 8 is a vertical cross-sectional view of a third embodiment of the cap with liquid return mechanism of the present invention. In the cap 3 of this embodiment, the cap main body 10c and the lid portion 20b are separate bodies, and are not connected by a hinge as in the above-described embodiment. A cylindrical threaded wall 27 is erected on the top plate 11 of the cap body 10c, and an externally threaded portion 26 is provided on the outer surface side. Then, the lid portion 20b is engaged with the cap main body 10c by screwing it with the inner screw portion 25 provided on the inner surface side of the lid portion 20b. In this embodiment, the pouring cylinder 15 is erected at the center of the top plate 11, and the liquid stopper pin 21 is vertically installed from the center of the top plate 22, so that they can be screwed together smoothly. can be done

The cap with a liquid return mechanism of the present invention is a cap used for containers for liquid contents such as sake and seasonings, and the containers include plastic bottles, glass bottles, paper packs, and the like. In the case of a plastic bottle or a glass bottle, it is attached directly to the mouth thereof, and in the case of a paper pack, it is attached in such a manner as to engage with a spout serving as a spout. When attaching to a paper pack, it is most effective in terms of liquid return property to attach to a container called a flat top, which has a spout attached to the flat top surface.

The method for manufacturing the cap with a liquid return mechanism of the present invention is not particularly limited, and a known method such as injection molding can be employed. The material constituting the cap with a liquid return mechanism of the present invention is not particularly limited as long as it can be applied to a manufacturing method such as injection molding. Examples include low-density polyethylene resin and linear low-density polyethylene resin. , high-density polyethylene resin, block polypropylene resin, random polypropylene resin, homopolypropylene resin, polymethyl methacrylate resin, acrylonitrile styrene resin, polystyrene resin, ABS resin, and the like can be preferably used, but are not limited thereto.

1, 2, 3... Cap with liquid return mechanism 10... Cap main body 11... Top surface portion 12... Peripheral wall 13... Cylindrical wall 14... Partition wall portion 15. Extraction tube 16 Opening 17 Opening 18 Internal screw 19 Inner ring 20 Lid 21 Stop pin 22 ... Top plate, 23 ... Hinge, 27 ... Screw wall, 30 ... Spout, 32, 33, 34 ... Contents

Claims (6)

A cap body having a top plate portion and a cylindrical peripheral wall extending downward from the peripheral edge of the top plate portion; A cap mounted on the container in engagement with
A cylindrical wall that hangs in a cylindrical shape from the top plate is provided,
a plate-shaped partition that closes the lower end of the cylindrical wall;
Having a pouring tube that is open and communicated at the upper and lower ends standing from the partition,
The lid has a liquid stop pin that fits into the upper end opening of the pouring tube when closed,
A cap with a liquid return mechanism, wherein an opening for liquid return is formed at a position at a predetermined height from the lower end of the cylindrical wall. 2. The liquid return mechanism-equipped cap according to claim 1, wherein the lid portion is connected to the cap body via a hinge so as to be able to swing. 2. The cap with a liquid return mechanism according to claim 1, wherein said cap main body and said lid portion are separate bodies, and are provided with a screw structure for screwing together. 4. The cap with a liquid return mechanism according to any one of claims 1 to 3, wherein an inner threaded portion that is screwed into the mouth portion of the container is provided on the inner surface side of the cylindrical peripheral wall. 4. The cap with a liquid return mechanism according to any one of claims 1 to 3, wherein a fitting portion for fitting a cap to the mouth portion of the container is provided on the inner surface side of the cylindrical peripheral wall. 6. The cap with a liquid return mechanism according to claim 1, wherein the opening for liquid return is provided on the hinge side of the cylindrical wall.

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