JP2543339Y2 - Cap for liquid container - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cap for a liquid container, and more particularly to a cap for a disposable liquid container in which an inner bag of a synthetic resin film is wrapped in an outer box such as a cardboard box.

[0002]

2. Description of the Related Art Conventionally, as a container for beverages and chemicals, a container in which an inner bag made of a synthetic resin is wrapped in an outer box such as a cardboard as described above is often used. As disclosed in Japanese Patent Publication No. 45-12356, as a pouring cap for this type of container, an annular spout provided integrally with the opening of the inner bag by means of heat welding had elasticity. A cap portion having a concave wall portion is fitted, and the opening / closing projection of the concave wall portion is rotated by a predetermined angle, so that the annular spout communicates with an outlet provided in the cap portion to discharge the content liquid. It is like that.

In the above cap, the opening / closing projection must always be held at a fixed angle when flowing out.
There is a drawback that it is unsuitable for women and children and other people with no power, and as a means to solve this drawback, a cap with a separate stopper that has an outflow state holding function above the cap is actually used. It is disclosed in Japanese Unexamined Patent Publication No. 2-73119.

As shown in FIG. 5, the cap comprises an annular spout (1) formed on a container and the annular spout (1).
1) equipped with a cap portion (3), the cap portion (3) has an annular wall portion (5), an outlet (4) formed in a part of the annular wall portion (5), An elastically deformable concave wall portion (7) having an opening / closing projection (10) at a central portion for elastically contacting and closing the opening (8) of the annular spout (1), Above the cap (3), a stopper (1
1) is fitted as a separate body, and the stopper (11) includes a ring (12) fitted into the annular wall (5) and a horizontal wall (12a) on the ring (12). The opening and closing protrusions (1
0), a locking piece (13) that is engaged at the time of outflow, and a release lever (14) at a symmetric position are integrally formed.

Next, the use state of the cap will be described (FIG. 6). First, the cap (4) is installed so that the outlet (4) faces downward, and the opening / closing projection (10) is connected to the outlet (4). When it is rotated in the opposite direction, the portion near the outlet (4) of the annular wall (5) is deformed and separated from the opening (8) of the annular spout (1), and the content liquid flows out of the outlet (4). Is spilled through.

Here, the opening / closing projection (10) is further rotated,
After passing over the locking piece (13), the end portion of the locking piece (13)
When the finger is released by the elastic force of the concave wall (7), the opening / closing projection (10) returns to the original position and the annular wall (5) comes into close contact with the opening (8). Although the outflow is stopped, the outflow state can be maintained by the engagement.

When it is desired to stop the outflow, the locking piece (1
When the end of the lever (14) provided on the side opposite to (3) is rotated upward, the locking piece (13) is rotated by this principle to engage with the opening / closing projection (10). Is released, and the annular wall (5) returns to the original state by the elastic force, and adheres to the opening (8) to stop the outflow.

[0008]

[Problem to be Solved by the Invention] When the opening / closing projection of the cap portion is engaged with the locking piece of the stopper portion when using the above-described pouring cap with a stopper, the locking piece must be moved over. Further, since the release lever is protruding and interferes with the finger during the engagement operation, there is a problem that the engagement operation is difficult when one-touch operation is considered with one hand.

Conventionally, the operation is performed by pressing the release lever, so that the lever base and the horizontal wall are required to have flexibility and sufficient rigidity to suppress the repulsive force of the opening / closing projection. Therefore, in the conventional product, it is necessary to set a structure and select a material to have an appropriate range of rigidity that satisfies these two requirements.

[0010]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and comprises an annular spout formed in a container and a cap attached to the spout. The outflow portion formed in a part and the opening of the annular spout formed integrally with the annular wall portion are elastically tightly closed and closed, and a projection for opening and closing is provided at a central portion. An elastically deformable concave wall having a projection for releasing the outflow state between the projection and the outlet is provided.A stopper is provided above the cap, and a stopper is provided on the lower surface of the stopper. There is provided a liquid container cap characterized in that there is a locking piece that engages with the opening / closing projection, and the upper surface of the stopper portion is flat,
Further, an inclined surface is provided on the locking piece so as to match the movement locus of the opening / closing projection when rotating the opening / closing projection to engage with the locking piece and to come inside the lower end thereof. The present invention provides a liquid container cap characterized by the following.

[0011]

The present invention is constructed as described above, and the opening / closing projection can be easily engaged with the locking piece with one hand with one hand because the tip of the opening / closing projection slides on the inclined surface on the locking piece. . Further, since the movable portion of the stopper portion is not required for the release operation of the outflow state, it is not necessary to select a structure and a material for the locking piece and its peripheral portion in accordance with a delicate balance with the repulsive force of the opening / closing projection.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the drawings. 1 and 2 show the cap for a liquid container according to the present invention, in which (1) is an annular spout portion formed on the liquid container (2), and the annular spout portion (1) has a cylindrical shape. The opening at the end communicates with the liquid container (2) {partially omitted}, and the liquid flows out from this opening.

The cap (3) is made of a flexible material such as polyester, polypropylene, synthetic rubber and the like. The annular spout (1) is made of semi-rigid plastic such as polyethylene and polyvinyl chloride.

The cap (3) and the annular spout
The connection with (1) is performed by the usual fitting or screwing shown in the figure. An outlet (4) protrudes from the upper side of the cap (3). The cap portion (3) has a cylindrical annular wall portion (5) and the annular wall portion (5).
A concave wall portion (7) which faces downward via an annular staircase wall portion (6) is formed in the middle of the inside of the, and this concave wall portion (7) is formed thinner than other portions and has elasticity. It is designed so as to have close contact with the inner surface of the opening (8) of the annular spout (1) in a normal state as shown in the figure, so that the liquid in the container leaks to the outside. There is no structure.

The opening / closing projection (10) is integrally formed substantially at the center of the bottom (9) of the concave wall (7). In the figure, reference numeral (10a) denotes a rib for controlling the deformation of the concave wall (7) so as to remove the state of contact with the inner surface.

Next, in the present invention, a stopper portion (11) is fitted in the space above the cap portion (3). As shown in FIG. 3, the stopper portion (11) has a ring portion (12) having a partially cut-out portion fitted into the annular wall portion (5) and a substantially crescent-shaped horizontal wall (12) inside the ring portion (12).
As shown in the sectional view of FIG. 2, a locking piece (13) having an inclined surface (13a) is integrally formed at a position corresponding to a crescent chord portion as shown in the cross-sectional view of FIG.

In FIG. 3, (15) is a reinforcing rib, (16) is a reinforcing wall extending from the end of the horizontal wall (12a), and (17) is removed from the cap of the stopper. It is a ridge for prevention.

Next, the method of using the above embodiment of the present invention will be described. First, the outlet (4) is installed so as to face down, and the opening / closing projection (10) is connected to the outlet (4). When it is rotated in the opposite direction, the vicinity of the outlet (4) of the annular wall (5) deforms and separates from the opening (8) of the annular spout (1), and the liquid content flows out of the outlet (4). Drained through.

Here, when the opening / closing projection (10) is further pushed by a finger, the tip of the opening / closing projection (10) is engaged with the locking surface (1) of the locking piece (13).
3a) Sliding on the upper side, it comes to the back side of the locking piece (13) and is engaged. At this time, the opening and closing projection (10) is maintained by the locking piece (13),
Keep outflow.

In this state, the release projection (18) provided on the inside of the concave wall located between the outlet (4) and the opening / closing projection (10) is pushed back to return to the original state. The opening / closing projection (10) is pulled through the connected concave wall (7), the engagement of the opening / closing projection (10) is released, and the outflow stops.

[0021]

The present invention is configured as described above. Since the tip of the opening / closing projection slides on the inclined surface on the locking piece, the operation of engaging the opening / closing projection with the locking piece can be easily performed with one hand with one touch. . In addition, since the movable portion of the stopper portion is not required in the release operation of the outflow state, it is not necessary to select a structure and a material for the locking piece and its peripheral portion according to a delicate balance with the repulsive force of the opening / closing projection. Has practical effects.

[Brief description of the drawings]

FIG. 1 is an explanatory sectional view showing an embodiment of a liquid container cap of the present invention.

FIG. 2 is an explanatory plan view showing an embodiment of the liquid container cap of the present invention.

FIG. 3 is an explanatory perspective view showing an embodiment of a stopper portion of the liquid container cap of the present invention.

FIG. 4 is an explanatory sectional view showing an open state of the liquid container cap according to the embodiment of the present invention;

FIG. 5 is an explanatory sectional view showing a closed state of a conventional liquid container cap.

FIG. 6 is an explanatory sectional view showing an open state of a conventional liquid container cap.

[Explanation of symbols]

 1. Annular stopper 2. Liquid container 3. Cap 4. Outlet 5. Annular wall 6. Annular staircase wall 7. Concave wall 8. Opening 9. Bottom 10. Opening / closing protrusion 11. Stopper 12 Ring 13. Locking piece 14. Lever 15. Rib 16. Reinforcement wall 17. Ridge 18. Release projection

Claims (2)

(57) [Scope of request for utility model registration] 1. An annular spout formed on a container and a cap attached to the spout, the cap being formed integrally with an outlet formed on a part of the annular wall and the annular wall. The formed annular spout is elastically in close contact with the opening and closed, and at the center, an opening / closing projection, and an outflow state releasing projection between the opening / closing projection and the outlet, respectively. An elastically deformable concave wall portion, a stopper portion is provided above the cap portion, and a locking piece engaging with the opening / closing projection is provided on a lower surface of the stopper portion; A liquid container cap characterized in that the upper surface is flat. 2. An inclined surface which is adapted to the movement locus of the opening / closing projection when the opening / closing projection is rotated to engage with the engaging piece and which is located inside the lower end thereof is provided on the engaging piece. The cap for a liquid container according to claim 1, wherein the cap is provided on a liquid container.