JPS5851965Y2 - Discharge valve for pressure filled products - Google Patents

Description

[Detailed description of the invention] The present invention is a pressurized product in which two types of substances are stored separately and mixed immediately before being discharged.
ackaging, so-called aerosol products).

In pressurized filling products, a partition is provided in the pressurized container, and 2
It is often desired to store the seed materials separately and to mix the two materials (usually liquids) (usually liquids) and react with each other just prior to discharge.

This requirement is typically found in foam products and hair dye products.

Various discharge valves have already been devised and proposed for this purpose.

A pioneering example of this is Japanese Patent Publication No. 47-4874 filed by the applicant company, and the applicant also filed a patent application in
-35411, an improved version thereof was disclosed.

Meanwhile, a structure as disclosed in Japanese Patent Publication No. 4-4874 has also been proposed.

The product disclosed in Utility Model Application No. 49-35411 was excellent in principle, but if the user wanted to discharge only a small amount, it was necessary to avoid pressing down the valve actuator (button) completely. It had the disadvantage that only 1/10,000 of 2000 was emitted, so it was not commercially successful.

The present invention relates to an improvement of this product.

According to the present invention, the lower valve chamber is composed of an upper valve chamber and a lower valve chamber, the lower valve chamber has a passage communicating with the first section of the pressurizing container divided into two, and the upper valve chamber has the above-mentioned pressure chamber. a valve body having a passage communicating with a second section of the pressure vessel; a first gasket through which the valve body is secured to a fixed cap of the pressure filling vessel; a second gasket; a gasket disposed at the boundary between the upper valve chamber and the lower valve chamber; an elastic member housed in the lower valve chamber; and a gasket disposed at the center of the first and second gaskets. The hollow valve leaflet is inserted into the valve body through the hole, and at the position pushed up by the elastic member, the portions corresponding to the first gasket and the second gasket are constricted and fit into the respective gaskets. It is divided into an upper cavity and a lower cavity by a partition wall at a position corresponding to the upper valve chamber, has a side hole communicating with the upper cavity in the constricted part that fits into the first gasket, and has a lower valve chamber. a valve leaflet having a side hole communicating with the upper valve chamber; an annular inner valve piece that is sandwiched between a first gasket and a second gasket and placed in the first valve chamber and in contact with the annular shape of both gaskets; When pressing down, the upper cavity of the valve leaflet communicates with the upper valve chamber, and at the same time, the second section of the pressurized filling container communicates with the upper valve chamber. A valve is provided.

Next, the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a cross-sectional view showing one embodiment of a discharge valve for pressure-filled products disclosed in Japanese Utility Model Application No. 49-35411.

Regarding this drawing, according to the utility model registration application, a fixing cap (mounting cup or winding fernyl) 21; and a first gasket 2 that is in close contact with this
0; a second gasket (in close contact with the first gasket);
The lower valve chamber 4 is separated into two upper and lower valve chambers 9 and 4 by an intermediate gasket 11, and the lower valve chamber 4 is connected to a flexible stock solution container 1 provided in a pressurized filling container 22, and has an elastic member 8 therein. The upper valve chamber 9 is connected to the propellant-containing space outside the flexible container 1 in the pressurized filling container 22, and the stop valve 7 is supported by and in close contact with the intermediate gasket. a valve body (valve housing) that is closely supported by the first and second gaskets 20 and 11 and that contains an annular internal valve piece 10 that normally blocks a passage connecting the upper valve chamber 9 and the propellant receiving space; 2: A hollow valve leaf (valve stem) that closely passes through the through hole provided in the center of the first and second gaskets, and its lower end is inserted into the valve body 2 into the stop valve 7 in the lower valve chamber. The valve leaflet 12 is inserted so as to be located in a space closed by the valve, and has a through hole 19 connecting the hollow part 16 and the space only at its lower end; when the leaflet 12 is pushed down, the stop valve 7 is This leaflet is pushed down to allow the discharge of the concentrate and also the discharge of the propellant; this leaflet is separated from the lower valve chamber, which is a filling head of the same shape as the leaflet and has a through hole communicating with the upper valve chamber 9. Reference numeral 4 discloses a discharge valve for a pressurized filling container which has a function of pushing down the second intermediate gasket to open a communication path between the upper valve chamber 9 and the propellant receiving space when a non-communicating object is inserted.

Although this valve is limited to mixed discharge of concentrate and propellant and has the advantage of being able to pressure-fill propellant instead, this mechanism can be used for pressure-filling of two-component products, such as hair dye.

(Either component may be mixed with the propellant.

) However, when this mechanism is used, for example, in hair dye products, there are the following disadvantages.

That is, when the user wishes to apply only a small amount to the hairline, etc., the actuator button is pressed only slightly.

Then, only one of the two precepts will be discharged.

In other words, in the above mechanism, the first component (undiluted solution) is also discharged from the second component.
The discharge of components (propellant) is also controlled by the second gasket (intermediate gasket).

In this case, if the leaflet 12 is completely depressed, the second
As the gasket 11 is pushed down, the stop valve 7 is also pushed down, so that both the first component (undiluted solution) and the second component (propellant) are discharged.

However, when the valve leaflets are pushed down only halfway, a passage is created between the second gasket 11 and the annular internal valve piece 10, but the stop valve 7 is not pushed down completely, so the tight contact with the second gasket is prevented. This results in a state where it cannot be broken.

In this state, only the second component (propellant) is discharged.

For this reason, Adai's product for pressure filling of cut corners was also commercially unsuccessful.

FIG. 2 is a sectional view showing the basic concept of the discharge valve of the present invention.

In this discharge valve, the valve body (valve housing) 2 consists of an upper valve chamber 9 and a lower valve chamber 4, the lower valve chamber 4 has a communication passage 6 to the first component receiving space, and the upper valve chamber 9 has a communication path 13 to the second precept receiving space.

In the case of the figure, the first precept in the above relationship is a propellant or a component containing a propellant, and therefore the passage 6 has a pipe 14.
is attached, and the second component does not contain a propellant, so the passage 6 is fitted with a container 1 made of a flexible material that accommodates the first component, but even if this relationship is reversed, I do not care.

The valve body 2 is connected to the fixed cover (1st gasket) 20 via the
It is fixed to a pressurized filling container 22 (a can, a bottle, etc., in the case of the figure) by a mounting cup or a rolled-up ferrule (the former in the figure) 21.

A second gasket (intermediate gasket) is arranged at the boundary between the upper valve chamber 9 and the lower valve chamber 4 of the valve body 2, and the upper valve chamber 9 has a first gasket. An annular internal valve piece 10 is placed between the second gaskets.

This annular internal valve piece 10 is in close annular contact with the first gasket, and with the second gasket is a double annular edge 17a,
Contact is made at 17b.

In this case, the outer edge 17b is for fixing the gasket 11 and is in contact only partially, but the inner edge 17a is in contact all around.

In the case shown in the figure, the upper valve chamber 9 is formed larger than the lower valve chamber 4, but this is advantageous in shaping the valve body and fixing the second gasket.

One hollow valve leaflet (valve stem) 12 is connected to the first. The valve leaflet 12 is inserted through a hole provided in the center of the second gasket, and the valve leaflet 12 is separated into an upper cavity and a lower cavity by a partition wall at a position that normally corresponds to the upper valve chamber, approximately in the center of the second gasket. Furthermore, the part that normally contacts the first gasket and the second gasket is narrowed (constricted) so that it fits tightly into the holes of both gaskets, and
A side hole 15 communicating with the upper cavity is provided in the part that fits into the gasket.
b, and the lower half has a side hole 15a that communicates the lower cavity and the upper valve chamber 9.

A spring 8 is disposed within the lower valve chamber 4 and is attached to the valve leaflet 12.
is pushing up.

The normal state mentioned above means the state in which the valve leaflets 12 are pushed up.

The relationship between the valve leaflet 12, the first gasket 20, and the second gasket 11 is such that when the valve leaflet 12 is pushed down, the contact between the first gasket 20 and the upper constriction of the valve leaflet is broken.
At the same time that the upper valve chamber and the upper cavity of the valve leaflet 12 communicate with each other through the side hole 15b, the contact between the lower inner edge 17a of the annular internal valve piece 10 and the second gasket is broken, and the upper valve chamber 9
The passage 13 is configured to communicate with the passage 13.

An actuator 18 (in the case of the figure, it is an actuator cap, but of course a button may also be used) is attached to the valve leaflet, and its ejection part is a spout 19.

It is well known to those skilled in the art that various modifications can be made to the configuration shape of this area.

Since the valve of the present invention is constructed in this way, the first component (propellant or a component containing propellant) always reaches the upper valve chamber, and when pushing down the valve leaflet, the second component (propellant) always reaches the upper valve chamber. At the same time as the propellant-free component) is introduced into the upper valve chamber 9,
Since the passage to the upper cavity of the leaflet 12 is opened, it is ensured that the same components are mixed in the upper valve chamber 9 and the upper cavity of the leaflet, the spout 1
It is discharged after 9.

Although the present invention has been described in detail with respect to the preferred embodiments described above, those skilled in the art will understand that various modifications can be made thereto.

Further, the valve body and leaflets of the present invention can be easily manufactured by injection molding of plastic, but they can also be made of metal by cutting, die-casting, etc., although this is not practical due to uneconomical considerations.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of one embodiment of a prior art valve for achieving a similar purpose to the discharge valve of the present invention. FIG. 2 is a sectional view showing one embodiment of the discharge valve of the present invention. In Fig. 2, 22: pressure filling container, 9: upper valve chamber,
4: Lower valve chamber, 6: Passage communicating with the first section of the pressurized filling container, 13: Passage communicating with the second section, 20: First gasket, 21: Fixed cap, 11: Second gasket , 8: elastic member, 12: valve leaflet, 15a, 15b: side hole,
10: Annular internal valve piece.

Claims (1)

[Scope of utility model registration request] It consists of an upper valve chamber and a lower valve chamber, the lower valve chamber having a passage communicating with the first division of the pressure vessel divided into two, and the upper valve chamber communicating with the second division of the pressure vessel divided into two. a valve body having a passage communicating with the compartment; a first gasket through which the valve body is secured to a fixed cap of the pressurized filling container; a second gasket, an elastic member disposed at the boundary between the upper valve chamber and the lower valve chamber; an elastic member housed in the lower valve chamber; It is a hollow valve stem that is fitted into the valve body, and at the position pushed up by the elastic member, parts corresponding to the first gasket and the second gasket are constricted and fitted with the respective gaskets, and the upper part It is divided into an upper cavity and a lower cavity by a partition wall at a position corresponding to the valve chamber, and has a side hole communicating with the upper cavity in the constricted part that fits into the first gasket, and an upper valve chamber in the lower retaining part. an annular internal valve piece which is sandwiched between a first gasket and a second gasket and placed in the first valve chamber and comes into contact with the annular shape of both gaskets; when pushing down the valve stem; A discharge valve for a pressurized filled product, wherein the upper cavity of the valve pedicle and the upper valve chamber are in communication, and at the same time, the second section of the pressurized filling container and the upper valve chamber are in communication.