JPH0840474A - Valve for aerosol - Google Patents

Abstract

PURPOSE:To make the degassing possible with a simple operation after the liquid in an aerosol is used up and simplify the structure and producible at a low cost. CONSTITUTION:In the aerosol valve which is constituted in a structure wherein the liquid in a container is ejected from the upper end by force prassurized gas with a discharge valve 7 opened by pushing down of a stem 3 which is provided to the upper part of the container with its upper end made available for moving vertically in the upwardly energized state, a degassing through hole 22 is provided to a specified position on the stem 3 while a specially structured stick plug 23 for closing the through hole 22 is provided. After the liquid in the container is used up, the stick plug 23 is operated for opening the through hole 22, and thereby the gas inside the container is exhausted.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates to aerosol valves.

[0002]

2. Description of the Related Art As a valve for an aerosol, a stem having an upper end protruding so as to be able to move up and down while being biased upward from an upper surface of a container body and an inner peripheral surface of an annular plate-shaped valve body fixed to an upper end portion of the container body. A discharge valve formed by closing a discharge valve hole formed in the peripheral wall of the stem so as to be openable and closable, and the discharge valve is opened by pushing down the stem so that the liquid in the container is jetted from the upper end of the stem by gas pressure. What is done is known.

[0003]

Conventionally, a container using a valve of this kind has a problem that gas remains in the container after using the stored liquid.
Since this gas may cause inconvenience such as explosion when the container is incinerated, the gas is vented by making a hole in the body of the container with a nail or the like after using the liquid.

However, degassing with a nail or the like is troublesome, and it is easy to forget, and consumers who do not know often discard it as it is, and as a result, the above-mentioned inconvenience may occur.

Therefore, one of the objects of the present invention is to propose an excellent aerosol valve capable of degassing with a simple operation after using the stored liquid.

Further, one of the objects of the present invention is to propose a valve which, in addition to the above objects, can achieve the above objects with an extremely simple structure and, as a result, is easy and inexpensive to manufacture. is there.

[0007]

In order to solve the above-mentioned problems, the valve according to the first aspect of the present invention is provided with a stem 3 having an upper end portion projecting upward and downwardly movably from the upper surface of the container body, and an upper end of the container body. A discharge valve 7 in which the discharge valve hole 6 of the stem peripheral wall 5 is openably and closably closed by the inner peripheral surface of the annular plate-shaped valve body 4 fixed to the portion.
In the aerosol valve, the discharge valve 7 is opened by pushing down the stem 3 and the liquid in the container is jetted from the upper end of the stem 3 by gas pressure. A reduced diameter portion 5a is formed on the inner circumference of the stem peripheral wall 5, and a gas venting through hole 22 is formed in the reduced diameter portion 5a.
The outer periphery of the lower end is liquid-tightly fitted to the inner peripheral surface of the reduced diameter portion 5a to close the through hole 22 for gas venting, and the upper end of the stem 3 is provided so that it can be pulled out from the upper end of the stem 3 by leaving a gap for liquid circulation in the periphery. The aerosol valve is characterized by being provided with a protruding rod plug (23).

According to a second aspect of the present invention, the stem 3 has an upper end portion projecting upward and downward so as to be movable upward from the upper surface of the container body.
And a discharge valve 7 formed by opening and closing the discharge valve hole 6 formed in the stem peripheral wall 5 at the inner peripheral surface of the annular plate-shaped valve body 4 fixed to the upper end of the container, and the stem 3 In the aerosol valve constructed such that the discharge valve 7 is opened by pushing down the valve and the liquid in the container is jetted from the upper end of the stem 3 by the gas pressure, the degassing transparent valve having the lower end of the stem 3 opened. A rod plug 23 is provided for forming a hole 22 and closing the through hole.
The rod plug 23 has a large diameter portion 23a liquid tightly fitted to the inner circumference of the stem peripheral wall 5 below the discharge valve hole 6, and a small diameter portion 23b with a clearance for liquid circulation around the upper end. And the upper end of the small diameter portion 23b is projected from the upper end of the stem 3 so that it can be pushed in by a predetermined width, and a vertical groove 25 for releasing the upper surface and the outer surface is vertically provided on the outer periphery of the large diameter portion. Above rod stopper
By pressing 23 against stem 3,
The aerosol valve is characterized in that the inside of the container and the inside of the stem communicate with each other via 25.

[0009]

When the head 24 is pushed down from the state shown in FIG. 1, the stem 3 is pushed down against the urging force of the spring 10, and the discharge valve hole 6 is disengaged downward from the annular plate valve body 4 portion. The liquid in the container body is opened by the gas pressure through the pipe 16 through the discharge valve hole 6, and is ejected from the ejection hole of the head through the liquid passage of the head 24 from the gap around the rod stopper 23.

When the pushing down of the head 24 is released, the stem 3 is lifted by the upward biasing force of the spring 10 and the discharge valve hole 6 is closed by the annular plate valve body 4, so that the pouring of the liquid is stopped.

When discarding the container after using the stored liquid, first remove the head 24, and then pull out the rod plug 23 to expose the through hole 22 for degassing, and the inside and outside of the container are exposed through the through hole 22. And the gas inside the container is discharged to the outside.

Further, in the embodiment shown in FIG. 2, if the head 24 is removed after the stored liquid is used and the upper surface of the rod plug 23 is pushed down, the stem 3 and the rod plug 23 are lowered together first, and the stem 3
When the flange 20 comes into contact with the upper surface of the locking projection 17 of the support box 9, the rod plug 23 is lowered relative to the stem 3 by the amount of the protrusion. At this time, the lower end of the vertical groove 25 projects from the lower end of the stem 3 as shown in FIG. 3, so that the inside of the container body 2 (in the support box 9) and the outside communicate with each other via the vertical groove 25.
The gas in the container body 2 is discharged to the outside.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of the present invention. A valve 1 of the present invention comprises a stem 3 having an upper end protruding from the upper surface of a container body 2 so as to be movable up and down and a container body. And a discharge valve 7 in which the discharge valve hole 6 of the peripheral wall 5 of the stem 3 is openably and closably closed by the inner peripheral surface of the annular plate-shaped valve body 4 fixed to the upper end portion, and the discharge valve is depressed by pushing down the stem 3. The valve 7 is opened to eject the liquid in the container body from the upper end of the stem 3 by gas pressure.

In the present embodiment, a support box 9 having an upper end fitted and fixed to the inner lower portion of a cylindrical mouth 8 which is erected at the center of the upper end of a container body 2 made of metal or the like, and the stem 3 described above. The valve 1 is composed of the annular plate-shaped valve body 4 and the coil spring 10 that biases the stem 3 upward.

The box 9 is made of synthetic resin or the like and has a flange 13 protruding outward from the outer periphery of the upper edge of the peripheral wall 12 standing from the peripheral edge of the bottom wall 11, and the lower surface of the flange 13 is inward. It is formed in a taper shape that descends. Further, a through hole 14 for introducing a liquid is formed in the center of the bottom wall 11, and a fitting cylinder 15 is hung vertically from the center of the rear surface of the bottom wall 11 around the through hole.
The upper end of the pipe 16 is fitted and fixed therein. The lower end of the pipe 16 is hung below the lower part of the container body, and the stored liquid is pushed upward by the gas pressure from the lower end opening. Further, on the inner periphery of the peripheral wall 12, an upper surface thereof is located at a predetermined height in the vertical center of the support box 9, and a locking projection 17 for controlling the descending position of the stem 3 is provided in a protruding manner.

Then, the outer periphery of the flange 13 is fitted to the inner lower portion of the mouth portion 8 of the container body 2, and the lower end is hung down and attached to the upper inner portion of the body portion of the container body 2.

The annular plate-shaped valve body 4 is formed of a flexible and elastic material such as an elastomer and has a thick annular plate shape. The peripheral portion is sandwiched and fixed between the back surface of 8a and the upper surface of the support box 9. In this embodiment, an annular projection 18 having a sharp upper end is provided on the upper surface of the support box 9 so as to fix the valve body 4 more stably and liquid-tightly.
It also serves as a packing that shuts off the inside and outside.

The stem 3 has a vertically long cylindrical shape in which a peripheral wall 5 is erected from the peripheral edge of the bottom wall 19, a flange 20 is integrally provided at a predetermined position below the outer periphery of the peripheral wall 5, and the peripheral wall 5 above the flange 20 is integrally formed. A discharge valve hole 6 that communicates the inside and the outside is formed at a predetermined position.

A window hole is formed in which the outer periphery of the stem peripheral wall 5 is vertically slidably fitted in the central through hole portion of the valve body 4, and the upper end portion thereof is formed in the center of the top wall 8a of the container body mouth portion 8. The coil spring 10 interposed between the lower surface of the flange 20 and the upper surface of the bottom wall 11 of the support box 9 causes the upper surface of the flange 20 to be urged upward with the lower surface of the valve body 4 abutted and locked. The valve body 4 is mounted such that it can move up and down by a predetermined width between the lower surface of the valve body 4 and the upper surface of each of the locking projections 17. At the highest position, the discharge valve hole 6 is liquid-tightly closed by the inner peripheral surface of the annular plate valve body 4, and the discharge valve hole 6 is opened by pushing down the stem 3 to open the inside of the container. The inside of the box and the inside of the stem 3 are configured to communicate with each other, and the discharge valve hole 6 and the inner peripheral surface of the valve body 4 form a discharge valve 7.

In the present invention, in order to remove the gas remaining in the container body after the contained liquid is used, the stem 3 has a through hole 22 for removing gas.
The through hole 22 is closed by a rod plug 23 when the container is used.

The gas vent hole 22 is formed in the reduced diameter portion 5a formed on the inner circumference of the stem peripheral wall 5 below the discharge valve hole 6, and the rod plug 23 is formed on the inner diameter surface of the reduced diameter portion 5a. The outer periphery of the lower end is fitted in a liquid-tight manner to close the gas venting through hole 22, and the upper end is projected from the upper end of the stem 3 with a gap for liquid circulation in the periphery.

In this embodiment, the inner peripheral wall 5 of the stem 3 is formed at a lower portion of the inner peripheral wall 5 with a wall thickness of the peripheral wall 5 to form a reduced diameter portion 5a having an inner diameter smaller than that of the upper portion thereof. The gas reducing through hole 22 that communicates the inside and the outside is formed in the reduced diameter portion 5a, but the invention is not limited to this. For example, the entire lower end of the peripheral wall 5 is reduced in diameter and the reduced diameter portion 5a is formed inside. Good.

The rod plug 23 is made of synthetic resin or the like and has a vertically long rod shape with a finger-engaging ridge on the outer periphery of the upper end, and the outer periphery of the lower end is liquid-tightly fitted to the inner surface of the reduced diameter portion 5a. In combination, the through hole 22 is normally closed. Therefore, normally, when the stem 3 is pushed down, the liquid in the container body passes through the pipe 16 through the support box 9 and through the discharge valve hole 6 through the peripheral gap of the rod plug 23 in the stem 3 and is jetted from the upper end.

A push-down head 24 is provided on the upper end of the stem 3.
Use by fitting. As the head 24, the one used in a conventional container of this type can be used, and it is detachably fitted to the upper end of the stem 3. Therefore, after using the stored liquid, the head 24 is removed and then the rod plug 23 is pulled out.

2 and 3 show another embodiment of the present invention. In this embodiment, the stem 3 is used in the above embodiment.
The bottom surface of the is opened and a gas venting through hole 22 is bored there. Further, the rod plug 23 has a large diameter portion 23a whose outer periphery is liquid-tightly fitted to the inner periphery of the stem peripheral wall 5 below the discharge valve hole 6 from the upper end thereof.
A small-diameter portion 23b is erected around the periphery with a gap for liquid circulation, and the upper end of the small-diameter portion 23b can be pushed into the stem 3 with a predetermined width.
A vertical groove 25 having an upper surface and an outer surface opened is formed vertically on the outer periphery of the large diameter portion 23a so as to project from the upper end.
Then, after using the stored liquid, the upper end of the rod plug 23 is pushed down to push the rod plug 23 into the stem 3 so that the vertical groove
The inside of the container and the inside of the stem 3 communicate with each other via 25.

In this embodiment, a flange 26 is provided protruding from the outer periphery of the lower end of the large diameter portion 23a so as to abut and lock the lower surface of the stem 3. Further, by pushing the rod plug 23 until the upper end surface of the rod plug 23 is substantially flush with the upper end face of the stem 3, the lower end of each vertical groove 25 faces the support box 9 as shown in FIG.
It is configured such that the inside of the container and the inside of the stem 3 communicate with each other when the stem 3 of 23 is locked. By configuring in this way,
The rod stopper 23 is prevented from falling into the box 9. If the rod stopper 23 falls into the box 9, the rod stopper 23 may be pushed up by the gas pressure, and the outer periphery of the large diameter portion 23a may be fitted into the stem 3 in the lower end portion in a liquid-tight manner.

[0028]

As described above, according to the valve of the present invention, the vent hole is formed at a predetermined position of the stem, and
Since the rod stopper having a special structure for closing the through hole is provided, the rod stopper can be pulled out upward in the first aspect of the invention after the stored liquid is used, and in the second aspect of the invention, the rod stopper can be removed. Since the gas remaining in the container body can be released by pushing it into the stem with a predetermined width, it is possible to easily perform the gas release without the need to make holes in the container body with nails unlike the conventional products. .

Further, the structure is extremely simple, and it can be easily manufactured by changing a part of the structure of the conventional valve of this kind, and it has an advantage that the manufacturing is simple and the manufacturing cost is low.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of the present invention.

FIG. 2 is a vertical sectional view showing another embodiment of the present invention.

FIG. 3 is a vertical cross-sectional view showing a state where the rod plug of the embodiment is pushed down.

[Explanation of symbols]

2 ... Container body, 3 ... Stem, 4 ... Ring plate valve body, 5 ... Stem peripheral wall, 5a ... Reduced diameter part, 6 ... Discharge valve hole, 7 ... Discharge valve, 22 ... Gas vent hole, 23 ... Rod Plug, 23a… Large diameter part, 23b… Small diameter part, 25… Vertical groove

Claims (2)

[Claims] 1. A stem peripheral wall 5 is formed by an inner peripheral surface of a stem 3 having an upper end protruding from the upper surface of a container body so as to be vertically movable and an annular plate valve body 4 fixed to the upper end of the container body. And a discharge valve 7 formed by closing the discharge valve hole 6 of the container so that it can be opened and closed, and the discharge valve 7 is opened by pushing down the stem 3 so that the liquid in the container is jetted from the upper end of the stem 3 by gas pressure. In the aerosol valve, the reduced diameter portion 5a is formed on the inner circumference of the stem peripheral wall 5 below the discharge valve hole 6, and
A gas vent hole 22 is formed in the reduced diameter portion 5a, and the reduced diameter portion 5a is formed.
A rod stopper in which the lower end outer periphery is fitted in a liquid-tight manner to the inner peripheral surface to close the gas venting through hole 22 and a gap for liquid circulation is formed in the periphery to allow the upper end to project from the upper end of the stem 3 so as to be pulled out. A valve for aerosol, which is provided with 23. 2. A stem peripheral wall 5 is formed by an inner peripheral surface of a stem 3 having an upper end protruding from the upper surface of the container body so as to be able to move up and down while being biased upward, and an annular plate-shaped valve body 4 fixed to the upper end portion of the container body. And a discharge valve 7 formed by closing the discharge valve hole 6 that is opened and closed so that the discharge valve 7 is opened by pushing down the stem 3 and the liquid in the container is jetted from the upper end of the stem 3 by gas pressure. In the aerosol valve configured as described above, a vent hole 22 for opening the lower end of the stem 3 is bored, and a rod plug 23 for closing the vent hole is provided. The stopper 23 is provided with a small diameter portion 23b standing upright from the upper end of a large diameter portion 23a fitted in a liquid tight manner on the inner circumference of the stem peripheral wall 5 below the discharge valve hole 6 with a clearance for liquid circulation around the periphery. Small diameter part 23b
The upper end is protruded from the upper end of the stem 3 so that a predetermined width can be pushed in, and a vertical groove 25 for releasing the upper surface and the outer surface is vertically provided on the outer peripheral upper portion of the large diameter portion. An aerosol valve, characterized in that, by pushing down, the inside of the container and the inside of the stem communicate with each other through the vertical groove 25.