JPH08104380A - Intermittent spray aerosol device - Google Patents

Abstract

PURPOSE: To make it possible for anyone to regulate spray amount simply and exactly by providing an intermittent spray part in the spray passage of an aerosol device. CONSTITUTION: When a button 3 is depressed, aerosol contents are sent through a stem 4, a discharge opening 14 and a communication hole 43 into a second pressure chamber 42. When the pressure of the second pressure chamber 42 becomes high, a piston 15 is forced down, a second communication hole 48 is open to the second pressure chamber 42 and the aerosol contents are sent through the second communication hole 48 and a first communication hole 44 into a pressure chamber 23. When both the pressure chamber 23 and the second pressure chamber 42 are increased in pressure, since the pressure exerting area of the piston 15 on the side of the pressure chamber 23 is larger than that of the piston 15 on the side of the second pressure chamber 42 by 45 minutes in terms of the rod, the piston 15 moves upwardly. In this way an opening 47 at the other end of the first communication hole 44 communicates with a communication passage 49 and the aerosol contents are sprayed from a spray nozzle 19 to outside. When the pressure of the pressure chamber 23 is lowered by spraying the aerosol contents, the piston 15 is again moved downwardly to cut off the communication so as to intermittently spray a predetermined amount of aerosol.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an intermittent injection aerosol device. More specifically, it relates to an aerosol device capable of intermittently ejecting aerosol contents.

[0002]

2. Description of the Related Art In the field of aerosol devices, there is still no device for intermittently ejecting aerosol contents, regardless of general household products and industrial products.

[0003]

However, when aerosol contents such as bactericides and insecticides are sprayed in a closed space such as a room, excessive amounts of these chemicals remaining in the room adversely affect the human body. Must be limited to:

Therefore, in the conventional aerosol device, the method of controlling the injection time is used to regulate the injection amount to a constant value. That is, this is a method of limiting the injection time to 2 seconds or 3 seconds per use. Then, such a preferable injection time is described in an instruction manual or the like to call the user's attention.

However, the method of controlling the injection amount by the injection time has a problem that it depends on human sense and lacks accuracy.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a device capable of accurately controlling the injection amount by anyone.

[0007]

The intermittent injection aerosol device of the present invention is an intermittent injection aerosol device in which an intermittent injection part is provided in the injection path of the aerosol device, wherein the intermittent injection part is a) an injection port. A cylinder having an injection port, and b) a piston that is inserted into the cylinder and defines a pressure chamber on the injection port side of the cylinder, and c) the piston is injected by injecting aerosol contents into the pressure chamber. A second pressure chamber that communicates with the injection port and a first pressure chamber that communicates with the injection port when the pressure chamber is moved by a predetermined amount. It is characterized in that the second pressure chamber functions as a returning means for returning the piston to the original position.

Further, the intermittent injection part has: a) a communication hole communicating with the injection port at one end thereof, and a communication passage communicating with the injection port at the other end thereof, and the pressure chamber and the pressure chamber from the inside. A cylinder formed with a central passage communicating with the communication passage, and b) a first pressure chamber slidably inserted into the pressure chamber of the cylinder and defining a second pressure chamber communicating with the communication hole, Section T with a rod extending from its surface to said central passage
A C-shaped piston, and c) a first through hole that is formed in the rod and that communicates with the communication passage that extends from one end of the piston to the outer periphery of the other end of the rod, and the second pressure chamber at the center outer periphery of the rod. A second through hole communicating with the second pressure chamber, the aerosol content injected from the injection port is injected into the second pressure chamber through the communication hole, and the pressure in the second pressure chamber is increased; When the piston is moved until the through hole communicates with the second pressure chamber,
When the pressure in the first pressure chamber rises, the content is ejected from the ejection port through the second communication hole, the first communication hole and the communication passage.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, when an opening / closing valve of an aerosol device is opened to inject an aerosol content, the aerosol content enters a pressure chamber from an inlet of a cylinder and raises the pressure of the pressure chamber. The piston is moved by the increase in the pressure, and when the piston moves by a predetermined amount, the communication means connects the pressure chamber and the ejection port. As a result, the aerosol content in the pressure chamber is ejected to the outside. When the aerosol contents are injected in this way, the pressure in the pressure chamber drops, so the piston is pushed back by the returning means,
The communication between the pressure chamber and the communication means is again cut off. With the above, one cycle is completed, and a fixed amount of aerosol content is sprayed to the outside in each cycle. The above cycle is repeated while the opening / closing valve of the aerosol device is open.

In the present invention, the injection amount in one cycle is constant, so by controlling the number of injections,
The total amount of injection can be regulated accurately.

Next, the intermittent injection aerosol device of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a sectional view showing a state before injection of an intermittent injection portion in an intermittent injection apparatus according to an embodiment of the present invention, and FIG. 2 is a sectional view showing a state during injection in the same embodiment.

The embodiment shown in FIGS. 1 and 2 has a through hole formed in a rod extending from the piston.

As shown in FIG. 1, the cylinder 11 is attached to the button 3 by a connecting member 13, and a piston 15 is arranged in the cylinder 11 so as to move up and down.
The piston 15 divides the inside of the cylinder 11 into a pressure chamber 23 and a second pressure chamber 42. The second pressure chamber 42
And the injection port 14 are communicated with each other through a communication hole 43. This second
The pressure chamber 42 is a resetting means referred to in the claims. A rod 45 is connected to the piston 15, and a first through hole 44 is bored in the rod 45 in the axial direction. One end 46 of the first through hole 44 is open facing the pressure chamber 23, and the other end 47 is open in the middle of the rod 45. A second through hole 48 is formed in the rod 45 to connect the second pressure chamber 42 and the first through hole 44 when the piston 15 is located at a substantially intermediate position in the cylinder 11.

A communicating passage 49 is formed at a portion communicating with the other end 47 of the first through hole 44 when the rod 45 rises in the cylinder 11, and the communicating passage 49 communicates with the injection port 19. ing.

In the present embodiment, when the button 3 is pushed in, the aerosol content is transferred to the stem 4, the injection port 14 and the through hole 43.
Through the second pressure chamber 42. When the pressure in the second pressure chamber 42 increases, as shown in FIG.
Is pushed down, and the second through hole 48 opens into the second pressure chamber 42 (at this time, the other end 47 of the first through hole 44 is closed by the cylinder wall). Then, the aerosol content is the second
It is injected into the pressure chamber 23 through the through hole 48 and the first through hole 44. Thus, when the pressures in the pressure chamber 23 and the second pressure chamber 42 both rise, the pressure receiving area of the piston 15 on the pressure chamber 23 side is larger than the pressure receiving area of the second pressure chamber 42 side by the rod cross-section integral. Therefore, the piston 15 moves as shown by the chain line. When the piston 15 moves in this way,
Since the other end opening 47 of the first through hole 44 communicates with the communication passage 49, the aerosol content is ejected from the ejection nozzle 19 which is the ejection port to the outside. When the pressure in the pressure chamber 23 drops due to the injection of the aerosol content, the piston 15 drops again and the solid line in FIG. After that, while the aerosol content is being ejected from the aerosol device 2, the above operation is repeated and the aerosol content is intermittently ejected.

Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications can be adopted within the scope of the invention.

[0018]

According to the present invention, anyone can easily and accurately control the injection amount.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an intermittent injection aerosol device according to an embodiment of the present invention in a state before injection by an intermittent injection part.

FIG. 2 is a sectional view showing a state during injection in the embodiment shown in FIG.

[Explanation of symbols]

 11 Cylinder 14 Injection Port 15 Piston 19 Injection Port 23 Pressure Chamber

Claims (2)

[Claims] 1. An intermittent injection aerosol device in which an intermittent injection part is provided in an injection path of the aerosol device, wherein the intermittent injection part is a) a cylinder having an injection port and an injection port, and b) the cylinder. A piston that is inserted into the inside of the cylinder and defines a pressure chamber on the injection port side of the cylinder; and c) When the piston moves a predetermined amount by injecting aerosol contents into the pressure chamber, the pressure chamber and the injection. A second pressure chamber communicating with the injection port, and a first pressure chamber communicating with the injection port, wherein the second pressure chamber comprises the piston. An intermittent injection aerosol device characterized by functioning as a resumption means for resuming the original position. 2. An intermittent injection aerosol device in which an intermittent injection part is provided in the injection path of the aerosol device, wherein the intermittent injection part has: a) a communication hole communicating with the injection port at one end thereof; A cylinder having at its end a communication passage communicating with the injection port and having therein a pressure chamber and a central passage communicating with the communication passage from the pressure chamber; and b) slidably inserted into the pressure chamber of the cylinder. And a cross section T having a rod that divides the first pressure chamber and the second pressure chamber communicating with the communication hole and extends from the surface thereof to the central passage.
A C-shaped piston, and c) a first through hole that is formed in the rod and that communicates with the communication passage that extends from one end of the piston to the outer periphery of the other end of the rod, and the second pressure chamber at the center outer periphery of the rod. A second through hole communicating with the second pressure chamber, the aerosol content injected from the injection port is injected into the second pressure chamber through the communication hole, and the pressure in the second pressure chamber is increased; When the piston is moved until the through hole communicates with the second pressure chamber,
An intermittent-injection aerosol device, wherein the content is passed through the second through-hole and the first through-hole and the communication passage to be jetted from the jet port due to a rise in pressure of the first pressure chamber.