JPS594762Y2 - Aerosol injection valve device - Google Patents

Description

[Detailed description of the invention] This invention provides a tilting aerosol injection device that has a precise valve restoring action, a large leak-preventing ability at the insertion part of the valve rod, and a low production cost. is its purpose.

The injection valve of the tilting aerosol injection device is operated from the bottom of the elastic packing 1 interposed between the valve housing 2 and the mountain cap 3, and from the base of the hollow valve rod 4 that is tightly inserted into the elastic packing 1. A part of the surface that engages with the top surface of the protruding valve sleeve 41 is opened when the valve rod 4 is tilted. In order to introduce it into the shaft hole 43, conventionally, the center part of the top surface of the valve hakama 41 is deeply hollowed out downward, and the side hole 42 connected to the shaft hole 43 is opened in the hollowed out part.

In this way, in the conventional valve rod, the side hole 42 is located at the valve hakama 41.
Since it is located deep below the top surface of the mold, it was not possible to form it cheaply and efficiently using a cutting die, and the only option was to use a split die, which had low forming efficiency.

Moreover, when using split molds, it is not only inefficient but also involves the work of scraping off the edges that always occur on the sides of the valve lever.
The fit with the elastic packing is likely to be unstable, which may cause liquid leakage.

The primary purpose of this invention was to eliminate the drawbacks of the conventional technology as described above, but as a result of the means taken to achieve this purpose, other excellent advantages as described below have been achieved. The effect occurred.

This invention will be explained below with reference to the illustrated embodiments.
is an elastic packing, and valve housing 2 is connected through this elastic packing 1.
is fixed to Mountain Cap 3.

4 is a hollow valve rod with a valve skirt 41 extending from its base, which is tightly inserted through the elastic packing 1 and receives the upward tension of the valve spring 5.

In this invention, a thick annular rising portion 11 is provided on the top surface of the center portion surrounding the shaft hole 13 through which the valve rod 4 of the elastic packing 1 is inserted, and a shaft hole 13 is provided on the bottom surface of the center portion. A widened annular recessed hole 12 is provided.

On the other hand, the side hole 42 of the valve rod 4 in this invention is
It is located higher than the

That is, this device is constructed as described above, and since the side hole 42 of the valve rod 4 is located above the valve hakama, the valve rod 4
There is no need for split molding, which is inefficient and involves deburring work, and can be produced by cutting molding.Therefore, not only is the production cost low, but when inserted into the elastic packing 1, the valve rod 4 and the elastic The adhesiveness of the insertion surface of the packing 1 is high, and therefore, liquid leakage from the peripheral surface of the valve rod is completely prevented.

Further, a thick annular rising portion 11 is provided on the top surface of the center portion surrounding the shaft hole 13 of the elastic packing 1, while an annular recessed hole 12 is provided on the bottom surface of the center portion by enlarging the shaft hole 13. The engagement point between the valve skirt 41 and the elastic packing 1 is positioned on the periphery of the recessed hole 12.

In this way, since the engagement point between the valve hakama 41 and the elastic packing 1 is located at the edge of the elastic body, the valve hakama 41 tilts and its retaining part presses the elastic body, and the elastic body receives the pressing force. In this case, the presence of the recessed hole 12 causes the elastic body to escape, resulting in a bending strain rather than a compressive strain.

On the other hand, since the rising portion 11 is thick and escape occurs near its top surface, the distortion of the bending similarly takes precedence, and therefore the tilting action of the valve rod 4 is soft and the restoring action is also smooth and accurate. .

Thus, according to this invention, not only the production cost of the valve rod is reduced, but also the liquid leakage around the valve rod is reliably sealed, and furthermore, the valve rod can be tilted smoothly and accurately. It is possible to provide a type aerosol injection device.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of one embodiment of this invention, Fig. 2 is a plan view of the same elastic packing, and Fig. 3 is a combination of the left half of one variant of the elastic packing and the right half of another variant. FIG. 1 is an elastic packing, 11 is a rising part, 12 is a recessed hole, 13
is the shaft hole, 2 is the valve housing, 21 is the valve chamber, 3 is the mountain cap, 4 is the valve rod, 41 is the valve hakama, 42 is the side hole, 43 is the shaft hole,
5 is a valve spring, 6 is a push button, 61 is a nozzle, and 7 is a liquid suction pipe.

Claims (1)

[Scope of utility model registration request] The valve housing 2 is fixed to the mountain cap 3 via the thick elastic packing 1, and the hollow valve rod 4, which has a valve skirt 41 extending from its base, is tightly inserted through the elastic packing 1 to push the valve spring 5. At the same time as applying tension, the top surface of the valve skirt 41 is engaged with the elastic packing 1, and when the valve rod 4 is tilted, a part of the engagement surface between the valve skirt 41 and the elastic packing opens, and the top surface of the valve skirt 41 is engaged with the elastic packing 1. In the device in which the valve chamber 21 and the shaft hole 43 of the valve rod 4 communicate with each other, the shaft hole 13 of the elastic packing 1 through which the valve rod 4 is inserted.
A thick annular rising portion 11 is provided on the top surface of the surrounding central portion, and an annular recessed hole 12 is provided on the bottom surface of the central portion by widening the shaft hole 13, and the side hole 42 is placed above the valve hakama 41. and the engagement point between the valve skirt 41 and the elastic packing 1 is located on the periphery of the recessed hole 12.