JPH0621904Y2 - Liquid spout cap - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a liquid container in which a bag is housed in an outer box, that is, a bag-in-box liquid pouring device.

(Prior Art) As a container for storing beverages such as milk and syrup that are easily deteriorated by being exposed to air, there is a double-structured container in which an inner bag made of a plastic film for storing a liquid is contained in an outer box formed of cardboard or the like. Are known. This container is commonly referred to as a bag-in-box.

FIG. 4 is a liquid pouring cap for a bag-in-box previously developed by the applicant.

In this liquid pouring cap, a cylindrical valve device (b) is circularly attached to a pouring port (a) fixed to an opening portion of a plastic inner bag, and an opening valve (c) of this valve device (b). Is pressed to the closed position by a spring, and is moved to the open position by being pressed down by a connector (not shown) fitted in the recessed portion at the tip.

That is, the opening valve (c) moves to the open position against the force of the spring, and the liquid in the bag body communicates with the suction hose via the valve device (b) and the connector.

According to this, since the container side and the hose side are individually sealed, the liquid contained in the container is reliably shielded from the air, and opening and resealing are easy.

(Problems to be Solved by the Invention) However, in the case of the above-mentioned conventional spout cap, resealing and resealing are easy, but there is a sanitary problem.

That is, when the tip of the connector is fitted into the recess of the opening valve (c) and pushed in, the on-off valve (c) moves to the open position against the force of the spring, but at this time, the inner bag has already been pushed. The liquid therein begins to flow through the hole (e) into the small chamber (d) of the valve device (b). The liquid that has flowed into this small chamber (d) is discharged through the suction hose, so there is no problem, but even after removing the connector from the recess of the on-off valve (c) after the desired discharging work is completed, it remains in the small chamber (d). The liquid remains and flows back into the inner bag when suction is finished, and after a certain period of time, the liquid that has deteriorated over time will be poured out again, which is unsanitary. .

In addition, when different liquids are poured out using the same pouring cap, it is necessary to perform sufficient washing, which is troublesome, and it is difficult to completely wash.

(Means for Solving the Problems) The present invention was conceived to solve the above problems.
A spouting cap detachably fixed to a spout provided in an opening of a bag containing a liquid, wherein the spouting cap is fixed to the tubular body and the spout provided on the outer circumference of the tubular body. A fitting flange having, an intermediate wall transversely provided on the inner wall of the tubular body, and a bottom wall covering the opening end of the tubular body on the side where the fixing means of the fitting flange is provided,
A hole is provided in the center of the middle wall and the bottom wall, and the space between the middle wall and the bottom wall normally closes the hole of the bottom wall,
A liquid comprising an elastic film having a substantially M-shaped cross section having a hole in the outer peripheral wall, and a valve member comprising a plunger and a receiving plate inserted into the hole of the intermediate wall via a spring outside thereof. It is a pouring cap.

(Operation) The present invention is configured as described above, and when the connector is fitted to the protruding side of the plunger of the cylindrical body, the valve member descends against the force of the spring and the intermediate wall is opened. However, at this time, the hole in the bottom wall is closed by the elastic film, so the liquid in the bag does not flow back into the inner bag, and the elastic film is pulled toward the valve member only after suction is started, and the hole in the bottom wall is closed. Is opened and liquid is injected.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

First, FIG. 1 shows a vertical cross section of the present embodiment, in which state is in a non-pouring state.

A spout provided in the opening (2) of the bag body (1) containing the liquid
(3) A spout cap made of synthetic resin such as polyethylene or polypropylene that is detachably fixed to the
(4), a fitting flange (6) having a rib as fixing means (5) for fixing the spout provided on the outer periphery of the tubular body (4), in a transverse direction to the inner wall of the tubular body (4) It is composed of a bottom wall (8) that covers the open end on the intermediate side, and is provided with the middle wall (7) and the bottom wall (8).
Holes (9) and (10) are provided at the center of the
In the space (11) between the (7) and the bottom wall (8), the hole (9) of the bottom wall (8) is normally closed, and the outer peripheral wall (12) has a hole (13). M
The intermediate wall through the elastic film (14) made of synthetic resin such as letter-shaped polypropylene or polyester, and the spring (15) on the outside thereof.
A valve member (18) including a plunger (16) inserted into the hole (9) of (7) and a receiving plate (17) is provided.

As shown in FIG. 2, the hole (9) of the intermediate wall (7) is a small cylinder.
(19), the small cylinder (19) and the intermediate wall (7) are connected by a plurality of radial arm members (20), and the space between the arm members (29) is set at the time of pouring as described later. It becomes the liquid flow path.

Next, how to use the valve member will be described. First, a connector (not shown) is fitted in the recessed portion above the cylindrical body (4), and the valve member is inserted.
When the (18) is pushed down, the contact between the receiving plate (17) and the contact ring (21) around the hole (9) of the intermediate wall (7) is released, and the hole (9) is opened. However, at this time, the elastic membrane (14) prevents the bottom wall.
Since the hole (10) of (8) is closed, the liquid in the bag (1) does not flow into the space (11) (see FIG. 3).

Then, when suction is started, as shown in FIG. 2, the elastic film (14)
Is deformed, the hole (10) in the bottom wall (8) is opened, and the hole (1
The liquid in the bag (1) is poured out through the space between the hole (13) and the arm member (20). After the suction operation is completed, the elastic film (14) closes the hole (10) so that the content remains in the space (11) but does not flow back into the inner bag.

(Effect of the invention) Since the present invention is configured as described above, the structure is simple,
The pouring work can be performed hygienically.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention, FIG. 2 is the same plane portion, FIG. 3 is a longitudinal sectional view showing a state of use, and FIG. 4 is an explanatory sectional view showing a conventional technique. (1) …… Bag, (2) …… Opening (3) …… Spout, (4) …… Cylindrical body (5) …… Fixing means, (6) …… Mating flange (7) …… Intermediate wall, (8) …… Bottom wall (9) …… Hole, (10) …… Hole (14) …… Elastic membrane, (15) …… Spring (16) …… Plunger, (17)… … Catch plate (18) …… Valve member, (20) …… Arm member (21) …… Contact ring

Claims (1)

[Scope of utility model registration request] 1. An extraction cap detachably fixed to a spout provided in an opening of a bag containing a liquid, the extraction cap comprising:
A tubular body, a fitting flange provided on the outer circumference of the tubular body and having fixing means for fixing to the spout, an intermediate wall provided in a transverse direction on the inner wall of the tubular body, and the fitting flange of the tubular body. It comprises a bottom wall covering the opening end on the side where the fixing means is provided, a hole is provided in the center of the intermediate wall and the bottom wall, and the space between the intermediate wall and the bottom wall is normally the bottom wall. Is provided with a valve member consisting of an elastic membrane having a substantially M-shaped cross section having a hole on the outer peripheral wall and a plunge and a receiving member inserted into the hole of the intermediate wall via a spring on the outside thereof. Characteristic liquid pouring cap.