JPH0351568Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to an aerosol container having a valve structure that prevents the valve from exploding due to abnormal internal pressure.

(Prior Art) A valve mounting structure in a conventional aerosol container generally has a structure as shown in FIG.
That is, there is an annular recess 3 for hanging on the neck 2 of the container body 1.
On the other hand, a cap 7, in which a valve housing 5 extending into the container of the valve 4 is airtightly supported by a sealing body 6, is fitted onto the neck 2, and the lower edge of the peripheral wall 8 is squeezed into the recess 3, thereby sealing the two together. It was engaged. In the figure, 9 is a deep tube.

(Problem to be solved by the invention) However, in the case of an aerosol container having such a valve mounting structure, if the aerosol container is left in a car parked in the hot sun, the internal pressure will rise abnormally. When the internal pressure exceeds the engagement force between the cap circumferential wall 8 and the container body 1, the engagement structure between the two may be destroyed, causing the cap containing the nozzle to explode, causing an unexpected accident.

(Means for solving the problem) This invention aims to prevent such an accident, and if the engagement of the engagement part is broken due to the increase in internal pressure, In addition, the structure is such that the ejection is temporarily stopped just before the explosion, and the internal pressure is instantly released.

That is, the present invention provides an aerosol container in which a valve including a valve housing and a dip tube is fitted to the neck of the container body through a valve mounting cap, and the lower end of the valve housing of the valve extending into the container is connected to the neck of the container. The valve is located in the enlarged diameter part, and a stopper packing with a diameter larger than the inner diameter of the neck is attached to the lower end of the valve housing, and a presser plate with a diameter smaller than the inner diameter of the neck or a short or short one is attached below the stopper packing. of,
This aerosol container is characterized by being fitted onto the neck of the container body via a valve attachment cap.

(Function) In this device, the stopper gasket 10, which has a diameter larger than the inner diameter of the neck of the container body 1, bends upward during insertion, does not interfere with insertion, and reaches the enlarged diameter portion below the container neck to form the original shape. Return to

On the other hand, when the engagement of the valve mounting cap 7 with the container body 1 is broken due to an abnormal increase in internal pressure and it pops out, the downward deflection of the stopper packing 10 causes the stopper stopper plate 11 below it to bend.
acts as a kind of baffle plate, the popping is inevitably stopped temporarily, the gas is instantly vented, and the above-mentioned valve explosion is avoided.

(Example) An example of this invention will be described below with reference to FIGS. 1 and 2.

As shown in the drawings, a valve mounting cap 7 supporting the valve 4 to the container body 1 of the present invention
The combination situation may be almost the same as that of the above-mentioned conventional example, and the same reference numerals will be used to omit the detailed explanation.

In the present invention, a stopper packing 10 is attached to the lower end of the valve housing 5 located at the enlarged diameter portion of the container neck 2, and has a diameter slightly larger than the inner diameter of the neck 2 of the container body 1.

Reference numeral 11 denotes a presser plate for press-supporting the stopper gasket 10 against the lower surface of the valve housing 8, and its diameter is slightly smaller than the inner diameter of the neck portion 2.

As the stopper gasket 10, a material having appropriate flexibility such as plastic or hard rubber is used.

As described above, in the present invention, the diameter of the stopper gasket 10 is larger than the inner diameter of the container neck 2, and the presser plate 11 has a disc shape with a smaller diameter than the inner diameter of the container neck 2. Alternatively, it may be a plate-shaped member having a dimension smaller than the inner diameter of the container neck 2.

Further, the container body 1 is not limited to glass, plastic, or metal, and the structure for engaging with the nozzle cap described above is not particularly limited, as there are many conventional modifications.

(Effects of the invention) Since the present invention has the above-described structure, the stopper gasket 10, which exceeds the inner diameter of the neck of the container body 1, bends upward during insertion and does not interfere with insertion. It reaches the enlarged diameter part below the neck and returns to its original shape. On the other hand, due to an abnormal increase in internal pressure, the engagement of the valve mounting cap 7 with the container body 1 is broken, and immediately before it pops out, the above-mentioned gasket 10
The downward deflection of the valve is prevented by the function of the stopper presser plate 11 as a kind of baffle plate, and the protrusion is inevitably stopped temporarily, the gas is instantly vented, and the above-mentioned valve explosion is avoided. This has the effect of preventing unexpected accidents due to sudden explosions.

[Brief explanation of the drawing]

1 and 2 are sectional views of main parts of the valve of the present invention when inserted and engaged with a container, and FIG. 3 is a sectional view of the conventional example. 1... Container body, 2... Container neck, 3... Engagement recess, 4... Valve, 5... Valve housing,
7... Valve mounting cap, 10... Stopper packing, 11... Holding plate.

Claims (1)

[Scope of utility model registration request] In an aerosol container in which a valve equipped with a valve housing and a dip tube is fitted to the neck of the container body via a valve mounting cap, the lower end of the valve housing of the valve extending into the container is located at the enlarged diameter part of the neck of the container. A stopper packing with a diameter larger than the inner diameter of the neck is attached to the lower end of the valve housing, and a holding plate with a smaller diameter or shorter than the inner diameter of the neck is attached below the stopper packing. An aerosol container characterized by being fitted onto the neck of a container body through a cap.