JPS5929910Y2 - aerosol injection device - Google Patents

Description

[Detailed description of the invention] The object of this invention is to provide an aerosol injection device in which the aerosol container can be freely used upright or upside down, and when the injection liquid is exhausted, it can be easily refilled from the replenishment container. With the goal.

This invention will be explained below with reference to the illustrated embodiments.
is a valve housing integrally molded from a soft elastic material such as artificial rubber, and has a cylindrical wall 11. A bottom wall 12 into which the liquid suction pipe 4 is fitted, and a collar 13
It has an overhanging top wall 14, and a valve chamber 15 is formed inside.

The collar 13 is tightly fitted by the base 5 to the mouth edge of the container 6 containing the spray solution.

A side hole 16 is bored in the front side of the cylindrical wall 11, and a guide surface 17 for preventing rotation of the valve rod 2, which will be described below, is formed inside the cylindrical wall 11.

Next, 2 is a valve rod, which consists of a small diameter rod part 23 and a large diameter base part 24 connected to the lower part of the rod part 23.
A bottomed front passage 21 and a rear passage each opening upward are bored in the axial direction.

The peripheral wall of the front passage 21 extends upward from the top of the rear passage 22 to form a nozzle 25 of the front passage 21 .

The front passage 21 has a side hole 26 that opens to the front, and the rear passage 22 has a side hole 27 that opens to the rear.

The base 24 has a sliding surface 28 corresponding to the guide surface 17 described above.
At the same time, the groove 29 and the rear groove 30 are formed, respectively.

The front groove 29 extends from the top of the front side of the base 24 to the side hole 1 of the valve housing.
6, the rear groove 30 is bored along the entire length of the rear side of the base 24.

Next, regarding the relationship between the valve housing 1 and the valve rod 2, the rod portion 23 of the valve rod 2 is slidably inserted through the top wall 14 of the valve housing, and the base portion 23 is slidably inserted into the top wall 14 of the valve housing.
4 is slidably fitted into the inner surface of the cylindrical wall 11.

A spring 7 is interposed between the bottom wall 12 of the valve housing and the base 24 of the valve rod.

Also, in this case, the aforementioned side holes 26, 27 engage with the top wall 14 above the lower surface of the top wall 14 of the valve housing.

Finally, 3 is a push button, with an injection port 31 on the front side and a vertical hole 32 bored from the top.

33 is a cap for opening and closing this vertical hole 32.

In this embodiment, it is molded integrally with the main body of the push button, but it may also be separable.

The push button 3 is fitted into the valve rod 2, with the nozzle 25 of the valve rod protruding into the vertical hole 32 and the rear passage 22 of the valve rod communicating with the vertical hole 32.

The device according to this invention has a valve case 1 and a valve rod 2 as described above.
, and a push button, the cap 33 closes the vertical hole 32 of the push button and thus forms the top of the push button 3, so if the push button 3 is pressed while pulling the cap 33 backward, The shoulder portion 241 on the front side of the base portion 24 of the valve rod, which is pushed up by the spring 7, becomes the fulcrum of the lever, and the rod portion 23 falls backward.

The base 24 tries to move forward about the above-mentioned fulcrum, but since the valve housing 1 is made of a soft elastic material, the front wall of the valve housing 1 bends forward, thus preventing the base 24 from moving forward. is allowed.

Since the side hole 27 of the rear passage is located near the lower edge of the top wall 14 of the valve housing, when the rod portion 23 is pushed while falling backward by pressing the push button 3, the side hole 27 and this A gap is created between the valve housing and the top wall 14 of the valve housing which are engaged to close the side hole 27, and a part of the side hole 27 can enter the valve chamber 15 through the gap.

On the other hand, since the rear groove 30 of the base 24 of the valve rod is bored over the entire length of the rear side of the base 24, the side hole 27 passes through the rear groove 30, the valve chamber 15, and the liquid suction pipe 4, and therefore the container 6
The pressurized solution filled inside passes through the rear passage 22 and enters the vertical hole 32 of the push button, and is then injected from the injection port 31.

At this time, since the shoulder portion 241 on the front side of the base portion 24 is in close contact with the wall surface of the valve housing 1, the side hole 26 located above the shoulder portion 241 and the valve chamber 15 are cut off, and the inside of the valve chamber 15 is cut off. The solution and the pressurized gas in the upper space of the container 6 are not injected.

Next, if the container 6 is held upside down and the top of the push button 3 is pushed forward, it will be possible to press the top of the push button 3, contrary to the above-mentioned case of injection in the upright position, after the base 24 of the valve rod. The side shoulder portion 301 becomes the fulcrum of the lever, and the rod portion 23 falls forward and the base portion 24 moves rearward, so that the side hole 26 opens into the valve chamber 15.

The front groove 29 extends from the top of the front side of the base 24 to the side hole 1 of the valve housing.
6, the side hole 26 is inserted into the front groove 29.
and communicates with the inside of the container 6 through a side hole 16 of the valve housing.

At this time, due to the overturning of the container 6, the pressurized solution in the container 6 floods the side hole 16, so this pressurized solution flows into the front passage 21 of the valve stem. It passes through the vertical hole 32 of the push button and is injected from the injection port 31.

At this time, since the shoulder portion 301 on the rear side of the base portion 24 is in close contact with the wall surface of the valve housing 1, the side hole 27 located above the shoulder portion 301 and the valve housing 15 are cut off.

Further, in the front groove 29, the lower portion of the base 24 and the wall surface of the valve chamber 15 are in close contact with each other, and the valve chamber 15 and the front groove 20 are cut off.

When the container 6 is overturned, the valve chamber 15 communicates with the bottom of the container filled with pressurized gas through the liquid suction pipe 4, but as mentioned above, both the side holes 26 and 27 are connected to the valve chamber. On the other hand, if the push button 3 is pressed forward while the container 6 is in the upright position, it will not be injected when the container 6 is in the upright position. As in the case of solution injection, the front passage 21 of the valve stem communicates with the upper space in the container 6 through the side hole 16 of the valve housing, so that only the pressurized gas filling there is discharged from the nozzle. In addition, if the push button 3 is operated while pulling backward in the upside down state, the rear passage 22 passes through the valve chamber 15 and the liquid suction pipe 4, and the container is injected. 6, the pressurized gas filling there is discharged from the injection port 31.

Such release of pressurized gas is effective in cleaning the injection port 31 and internal passages after use when the solution, such as paint, has the property of clogging the injection port 31 when dried and solidified. be.

Furthermore, according to this invention, the nozzle 25 of the front passage 21
protrudes into the vertical hole 32 of the push button, and the rear passage 2
2 is open in the vertical hole 32, open the cap 33,
After overturning the container 6, insert the nozzle of the supply container into the nozzle 25.
If the valve rod 2 is pressed directly below, the side hole 26:2
7 is poured into the valve chamber 15, so that the replenishing solution flows through the front passage 2.
1. The pressurized solution is replenished through the side hole 26 and the front groove 16.

At that time, the pressurized gas at the bottom of the container 6 is transferred to the liquid suction pipe 4,
It is discharged to the outside from the vertical hole 32 through the valve chamber 15, the rear groove 30, the side hole 27 and the rear passage 22, thus preventing pressurized gas from accumulating inside, allowing for full filling. become.

As described above, the guide surface 17 for preventing rotation is formed inside the valve housing 11, and the base 24 of the valve rod is provided with a sliding surface corresponding to the guide surface 17. The side hole 16 and the front groove 29 of the valve stem always maintain a constant angular positional relationship, ensuring the above-mentioned injection action.

As mentioned above, according to this invention, the container can be used upright,
To provide an extremely useful and convenient aerosol injection device which can be used upside down, whose injection port and internal passage can be easily cleaned after use, and which can be easily and reliably refilled from a supply container. I can do it.

[Brief explanation of drawings]

FIG. 1 is a vertical sectional view of the main parts of an embodiment of the device according to this invention in an upright state, FIG. 2 is a sectional view of the main parts of the valve case, FIG. 3 is a plan view of the valve rod, and FIG. 5 is a bottom view of the valve rod, and FIG. 6 is a vertical sectional view of the main portion of the push button using the cap. 1 is the valve case, 11 is the cylinder wall, 12 is the bottom wall, 13 is the brim, 14
is the top wall, 15 is the valve chamber, 16 is the side hole, 17 is the guide surface, 2 is the valve rod, 21 is the front passage, 22 is the rear passage, 23 is the rod part,
24 is the base, 25 is the nozzle, 26.27 is the side hole, 28 is the sliding surface, 29 is the front groove, 30 is the rear groove, 241, 301
is the shoulder, 3 is the push button, 31 is the injection port, 32 is the vertical hole, 3
3 is a cap, 4 is a liquid suction tube, 5 is a cap, 6 is a container, and 7 is a spring.

Claims (1)

[Scope of utility model registration request] The valve housing 1 has a cylindrical wall 11. The bottom wall 12 into which the liquid suction pipe 4 is fitted and the top wall 14 from which the collar 13 extends are integrally molded from a soft elastic material, and a valve chamber 15 is formed inside.
3 is tightly fitted to the mouth edge of the container 6 containing the injection solution by the base 5, and a side hole 16 is bored in the front side of the cylinder wall 11.
A guide surface 17 for preventing rotation of the valve rod 2 is formed inside the cylindrical wall 11, and the valve rod 2 has a small diameter which is bored in the axial direction through a front passage 21 and a rear passage 22, each of which has a bottom and is open upward. The peripheral wall of the front passage 21 extends upward from the top end of the rear passage 22 to form a nozzle 25 of the front passage 21. , the front passage 21 and the rear passage 22 are connected to the top wall 1 of the valve housing.
The top wall 1 opens toward the front and rear, respectively, near the bottom surface of 4.
The base 24 has side holes 26 and 27 that engage with the guide surface 17, and the base 24 forms a front groove 29 and a rear groove 30, which will be described below, respectively, together with a sliding surface 28 corresponding to the guide surface 17. 24 from the top end of the front side to below the side hole 16 of the valve housing, and the rear groove 30 is bored over the entire length of the rear side of the base 24. The rod 23 is slidably inserted into the top wall 14, and the base 24 is inserted into the cylindrical wall 11, and a spring 7 is interposed between the bottom wall 12 and the base 24, and the push button 3 is connected to the injection port 3.
1 on the front side, a vertical hole 32 communicating with the injection port 31 is bored from the top surface, and a cap 33 for opening and closing the vertical hole 32 is provided, and the nozzle 25 of the valve rod 2 projects into the vertical hole 32, and the rear passage 22 Push the push button 3 so that it opens in the vertical hole 32.
An aerosol injection device formed by inserting the into the valve rod 2.