JPH08198300A - Automatic opening and closing device of discharging container - Google Patents

Abstract

PURPOSE: To inexpensively provide an automatic opening and closing device automatically closing the discharge port of a discharging container at the mouth thereof as a simple structure hard to damage. CONSTITUTION: An automatic opening and closing device is constituted of a device base stand 1 having the outflow passage 1a communicating with a discharging container, the flexible film member 2 bonded to the upper surface of the device base stand 1 so as to leave the closing duct 4 formed of a non- adhesive part opened to the side surface 1d of the upper part of the device base stand 1 and communicating with an outflow passage 1a and the head member 3 fixed to the device base stand 1 to cover the film member 2. The gap part 5 permitting the expansion of the closing duct 4 is formed to the head member and the closing duct 4 is automatically opened and closed by the liquid pressure of a fluid and the restoring force of a film.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic opening / closing device for automatically opening / closing the discharge port of a discharge container, such as a container with a pump, a tube container or a squeeze container, from which a fluid substance is pushed out by pressure.

[0002]

2. Description of the Related Art A discharge container for storing cosmetics such as cream and face wash and fluids having a considerable viscosity such as toothpaste and shampoo in a pressurizable container such as a container with a pump or a tube container, and applying pressure to the container. It is well known that the outlets of these containers are automatically closed at the mouth to block the fluid in the outlets from the outside air, preventing the fluids in the vicinity of the outlets from drying or deteriorating, and improving hygiene. It is also considered.

As described above, a conventional example of a discharge container having an automatic closing device which automatically opens a discharge port of a container by applying pressure to a fluid and automatically closes the discharge port due to depressurization. For example, JP-A-49-1251
There is an automatic opening and closing device disclosed in Japanese Patent Publication No. 89.

As shown in FIG. 6, the automatic opening / closing device disclosed in the above publication communicates with the discharge duct 52 inside a rigid discharge portion 53 having a discharge duct 52 communicating with the inside of the container 51. Flexible wall 5 with outlet 54
5 is provided, is hinged to the outside of one side of the discharge part 53 by a shaft pin 56, and is a spring member 5.
A beak piece 58 biased in the closing direction by 7 is provided, and the beak piece 58 elastically presses the flexible wall portion 55 to close the discharge port 54.

When a pressure is applied to the fluid in the discharge duct 52, the fluid overcomes the pressing force of the beak piece 58 and is automatically discharged through the discharge port 54. When lowered, the discharge port 54 is automatically closed by the elasticity of the spring member 57.

[0006]

By the way, in the automatic opening / closing device for the discharge container, the main parts of the automatic opening / closing mechanism such as the spring member 57 and the beak piece 58 are exposed and formed outside the container 51. It is not suitable for mass production because it is easy to be damaged when dropped or bumped, and it has many parts to be used, and many laborious assembly processes such as attaching the spring member 57 and pinning the beak piece 58 are not suitable for mass production. It became expensive as the device of the container to be used.

The present invention has been made in view of the above problems, and makes it possible to inexpensively provide an automatic opening / closing device for a discharge container, in which the closing mechanism is less likely to be damaged, and the number of parts and the number of steps are small. It is a thing.

[0008]

An automatic opening / closing device for a discharge container according to a first aspect of the present invention has a device base having an outflow passage communicating with the inside of the discharge container and an opening on an upper side surface of the device base. A flexible film member adhered to the upper surface of the device base, leaving a closed duct formed of a non-adhesive portion communicating with the outflow passage, and fixed to the device base by covering the film member. A head member, and a gap portion that allows the bulging of the closed duct is formed in the head member.

An automatic opening / closing device for a discharge container according to a second aspect of the present invention has a flexible structure in which a device base having an outflow passage communicating with the inside of the discharge container is vertically laminated and left partially bonded. A film member in which a closed duct formed from a non-adhesive portion of a film communicates with the outflow passage and is adhered to the upper surface of the device base, and a head member that covers the film member and is fixed to the device base. The front end of the closing duct is closed and protrudes from the upper side surface of the device base, and the head member is formed with a gap portion that allows the bulging of the closing duct. It has a feature.

[0010]

In the automatic opening / closing device for a discharge container according to the first aspect, when the pressure applied to the fluid substance in the outflow passage rises above the elastic tension of the flexible film forming the closed duct, the film in the closed duct is The entry pressure of the fluid causes the fluid to bulge and swell, the closed duct is automatically opened to form a passage, and the fluid is pushed out of the opening of the closed duct.

When the pressure on the fluid disappears, the closed duct is automatically restored by the elastic tension of the film itself, and the passage is closed.

In the automatic opening / closing device for a discharge container according to the second aspect, in addition to the above-mentioned operation, the tip of the closing duct made of a film member is formed so as to project from the upper side surface of the device base, and the closing duct is formed. Since the tip portion of the above is configured to be adhered and closed, the closed portion can be cut by a blade and cannot be ejected until it is cut.

[0013]

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

FIGS. 1 to 3 show a first embodiment of an automatic opening / closing device for a discharge container according to the present invention. In these drawings, the symbol H indicates an automatic opening / closing device.

As shown in FIGS. 1 and 2, in the automatic opening / closing device H of this embodiment, a container body 30 made of a synthetic resin or a glass material and a well-known manual pump 31 are attached to the container body 30. Is a push button fitted to a stem 32 that is a discharge passage of a manual pump 31 that discharges the filled fluid material by communicating with the inside of the discharge container A. .

The automatic opening / closing device H is an automatic opening / closing device that is integrally welded to an upper surface of the device base 1 and a device having a short cylindrical shape formed of a general-purpose synthetic resin material such as polyethylene or polypropylene. It is composed of a head member 3 which constitutes the upper part of the outer shell of H, and a flexible film member 2 which is located between the device base 1 and the head member 3 and forms a closed duct 4. Has been done.

The device base 1 is provided with a beak projection 1b which cooperates with the film member 2 to form a front part of the closed duct 4 on one side of the upper part thereof, and a flat upper surface is provided with a vertical upper and lower part. The outflow passage 1a is formed so as to penetrate therethrough, and the lower portion of the outflow passage 1a is formed with a large diameter through the step portion 1c.
The stem 32 which is the passage of the fluid is inserted.

On the flat upper surface of the apparatus base 1, a film having desired physical properties such as flexibility, elasticity and tension and a thickness, for example, vinyl chloride, polyester, polyamide, polyethylene, polypropylene or the like is selected. The film member 2 is adhered using a known adhering or fusing means in the area shown by cross hatching in FIG. 3 to form the adhering portion 4b, and the non-adhering portion 4a.
Constitutes a closed duct 4 which is in close contact with the upper surface of the device base 1 and which cooperates with the upper surface of the device base 1 to extend from the central portion of the device base 1 and have an opening 6 opening to the upper side surface 1d. There is.

As shown in FIG. 3 (A), the closed duct 4 may be formed in a straight line from the central portion of the apparatus base 1 to the upper side surface 1d, or as shown in FIG. 3 (B). Alternatively, the bent portion 4d may be provided in a crank shape so as to give a sufficient resistance to the fluid substance.

The head member 3 is made of the same material as the device base 1 or a compatible synthetic resin material and is formed into a planar shape substantially similar to the plane of the device base 1, and the film The member 2 is sandwiched inside and welded to the upper surface of the device base 1 to form the upper part of the outer shell of the automatic opening / closing device H.

On the lower surface of the top wall 3a of the head member 3, there is formed a gap portion 5 having a height and a width which allow the expansion of the closed duct 4 when the expansion occurs.

When the automatic opening / closing device H of the present embodiment having the above-described structure is mounted on the manual pump 31 and operated, the fluid is pressurized and flows from the stem 32 to the outflow passage 1 of the device base 1.
It is press-fitted into a, pushes open the closed duct 4, and flows in.

Since the closed duct 4 is constructed such that the upper surface of the apparatus base 1 and the non-adhesive portion of the film member 2 are in close contact with each other, the pressure applied to the fluid substance in the outflow passage 1a is flexible. When the film tension exceeds the elastic tension of the film, the film member 2 bends and bulges due to the entry pressure of the fluid, the closing duct 4 is automatically opened to form a passage, and the fluid is opened while pushing the closing duct 4 open. Extruded from the part 6.

When the manual pump 31 is pushed down and the pressure on the fluid disappears, the passage of the closing duct 4 is restored by the elastic tension of the film itself and comes into close contact with the upper surface of the apparatus base 1 to be automatically closed. To be done.

As described above, the opening / closing of the automatic opening / closing device H according to this embodiment is surely performed in the entire passage of the closed duct 4 extending from the communication point with the outflow passage 1a to the opening 6. .

FIGS. 4 to 5 show a second embodiment of the automatic opening / closing device for a discharge container according to the present invention. In the drawings, the same parts as those in the first embodiment are designated by the same reference numerals and their description is omitted. Is omitted.

As shown in the figure, the automatic opening / closing device H of the discharge container of the second embodiment is basically the same as the first embodiment and the device base 1 and the upper surface of the device base 1. A head member 3 that is integrally welded to the upper part of the outer shell of the automatic opening / closing device H, and two upper and lower parts that are sandwiched between the device base 1 and the head member 3 to form a closed duct 4. The film member 2 has flexibility.

The film member 2 in this embodiment is shown in FIG.
2 flexible films 2a, 2b
Of the film 2a and the non-bonded portion 4a of the film 2b indicated by broken lines in FIG.
Is formed.

FIG. 5B shows the film member 2 of this embodiment.
When viewed from the back side, reference numeral 2c is a hole provided in the lower film 2b communicating with the outflow passage 1a of the device base 1, and the film member 2 is adhered to the upper surface of the device base 1 to close it. The duct 4 is configured to communicate with the outflow passage 1a through the hole 2c.

The tip portion of the closing duct 4 made of the film member 2 is formed so as to project from the upper side surface 1d of the apparatus base 1, and the tip front portion 4c of the closing duct 4 is adhered to the closing duct 4 to be bonded. Is blocked.

The structure of the other parts in this embodiment is almost the same as that of the first embodiment, and the explanation thereof is omitted.

When using the discharge container equipped with the automatic opening / closing device H of the present embodiment configured as described above, the closed front portion 4c of the closed duct 4 is cut off with a blade to open the closed duct 4. However, it is used similarly to the first embodiment, and the tip front portion 4c protruding from the apparatus base 1 is used.
It is advisable to provide a cutting mark 4d or a cut near the edge.

According to the automatic opening / closing device H for the discharge container of the present embodiment, the front end portion 4c of the closed duct 4 projecting from the device base 1 is adhesively closed, so that it is illegal unless this part is cut. Even if it is activated, the fluid will not be discharged, so that it is possible to prevent unauthorized use and guarantee the virginity of the product.

Although the automatic opening / closing device H has been described as the push button of the manual pump 31 in the first and second embodiments,
The discharge container in which the automatic opening / closing device H of the present invention is used is not limited to the pump type, and it goes without saying that a discharge container such as a squeeze container or a tube container in which a fluid substance is pushed out by pressure can be used. Nor.

[0035]

According to the automatic opening / closing device for a discharge container of the present invention, the following effects can be obtained.

According to the automatic opening / closing device of the discharge container of the first aspect, the automatic closing of the automatic opening / closing device is achieved by the passage over the entire length of the closing duct by the entire adhesion of the film member to the upper surface of the device base. Therefore, the fluid in the automatic switchgear can be reliably shut off from the outside air.

Further, since the automatic closing mechanism is constructed inside the shell of the automatic opening / closing device, it is less likely to be damaged by an external impact, and the number of parts is small and the structure is simple, so that it can be manufactured at low cost. .

According to the automatic opening / closing device for the discharge container of the second aspect, in addition to the above effects, the tip end of the closing duct made of a film member is formed to project from the upper side surface of the device base and the closing is performed. Because the tip of the duct is glued and closed, the filler will not be discharged unless the glued tip is cut off. Therefore, unauthorized use can be detected and prevented, and the virginity of the product is guaranteed. It has a beneficial effect.

[Brief description of drawings]

FIG. 1 is a sectional view showing a first embodiment of an automatic opening / closing device for a discharge container according to the present invention.

FIG. 2 is a cross-sectional view of a discharge container equipped with the automatic opening / closing device of the first embodiment.

FIG. 3 is a plan view showing a state in which a film member is bonded to a device base of the automatic opening / closing device in the first embodiment.

FIG. 4 is a sectional view showing a second embodiment of an automatic opening / closing device for a discharge container according to the present invention.

FIG. 5 is a perspective view of a film member used in the second embodiment.

FIG. 6 is a sectional view showing a conventional example.

[Explanation of symbols]

A discharge container, H automatic opening / closing device, 1 device base, 1
a Outflow path, 1d Upper side surface, 2 Film member, 3
Head member, 4 closed duct, 4a non-adhesive part,
5 Gap

Claims (2)

[Claims] 1. An apparatus base having an outflow passage communicating with the inside of a discharge container, and a closed duct formed from a non-adhesive portion opened to an upper side surface of the apparatus base and communicating with the outflow passage. It comprises a flexible film member adhered to the upper surface of the base and a head member fixed to the device base so as to cover the film member; the head member allows the bulging of the closed duct. An automatic opening / closing device for a discharge container, wherein a gap is formed. 2. The outflow of an apparatus base having an outflow passage communicating with the inside of the discharge container, and a closed duct formed of a non-adhesive portion of a flexible film which is vertically overlapped and is partially left and adhered. A film member that is in communication with a passage and is adhered to the upper surface of the device base; and a head member that covers the film member and is fixed to the device base; and the tip end of the closed duct is closed. At the same time, an automatic opening / closing device for the discharge container, which protrudes from an upper side surface of the device base, and has a gap formed in the head member to allow the bulging of the closed duct.