JP2000189855A - Delayed ejecting device for aerosol - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a delayed ejection of aerosol contents to be performed without using a high viscosity substance and others by closing an introduction port communicating with a stem during pressing with a press lever and the discharge path of the lever and installing a minute flow passage piece forming a minute flow path passage which makes the stem communicate with an introduction chamber. SOLUTION: When a press main body 5 is rotated, and an engagement projection 6 is slid to a press part following an engagement channel 7, the main body 5 presses a stem 3 through an engagement member 11, the valve mechanism of an aerosol container 1 is opened, and aerosol contents are introduced into an introduction port 12. The contents are introduced into an introduction chamber through the minute flow passage of a minute distribution piece 13 and introduced little by little in turn into the chamber. When the introduction quantity exceeds a fixed limit, and an introduction pressure is superior to the restoration force of a press spring 24, a press piston 21 elevates with a press lever 18, the piece 13 is pushed upward, and the contents are ejected from an ejection nozzle 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a delayed aerosol injection device for injecting aerosol contents after a predetermined time has elapsed after opening a valve mechanism. It is particularly effective when used for mass injection of contents that adversely affect the human body, such as injection of an agent.

[0002]

2. Description of the Related Art Conventionally, a large amount of insecticide or the like is sprayed into a closed room to continuously spray aerosol contents into an aerosol device used to eliminate cockroaches, mites and other harmful insects in the room. In addition, there is an apparatus having a delay injection mechanism that provides a time lag between the injection of the aerosol content and the injection start operation. By this delay injection mechanism, after performing the injection start operation of the aerosol content, the operator, before starting the injection of the aerosol content,
You can safely leave the room.

[0003] As a method of performing such delayed injection of the aerosol contents, as disclosed in Japanese Patent Publication No. 8-29792, a storage chamber in which a highly viscous high-viscosity material is stored in a flow path of the aerosol contents. There are those provided with. Then, when injecting the aerosol content, the valve mechanism of the aerosol device is opened to discharge the highly viscous material in the storage chamber by the injection pressure of the aerosol content. By discharging the high-viscosity material, the communication route and the ejection nozzle communicate with each other, and the aerosol content can be ejected from the ejection nozzle to the outside. As a result, it takes a certain time to discharge the high-viscosity material, so that delayed injection of the aerosol content is enabled.

[0004]

However, in the method of storing a high-viscosity substance in the distribution path of the aerosol contents, there is a possibility that the aerosol contents and the high-viscosity substance come into contact with each other to cause a chemical reaction. Further, it takes a lot of trouble to arrange the high-viscosity material in the jet path of the aerosol content, and it takes a lot of trouble to discard this high-viscosity material. For this reason, there have been various problems such as making the apparatus expensive and clogging the nozzles with a high-viscosity material.

An object of the present invention is to solve the above-mentioned problems, and it is an object of the present invention to enable delayed injection of aerosol contents without using a high-viscosity material. This makes it possible to eliminate various drawbacks caused by the above, and realizes a highly reliable delay injection mechanism.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a pressing body capable of pressing a stem of an aerosol container and fixing the pressing position, and an aerosol content provided in the pressing body. A pressing piston pressed and urged with a pressure smaller than the pressure of the propellant in the direction of the introduction chamber of the object,
A pressing rod fixed to the pressing piston and formed at the upper end thereof protrudes outward from the pressing body and has an outlet path communicating with the injection nozzle, and an introduction port communicating with the stem when pressed by the pressing rod. And a minute flow passage piece which closes the lead-out passage of the pressing rod and forms a minute flow passage connecting the stem and the introduction chamber.

In order to fix the pressing position of the pressing body, an engaging projection is provided on the outer peripheral portion of the pressing body, and a shoulder cover fixed to the aerosol container is provided with an inclined groove toward the aerosol container. May be formed by engaging the engaging protrusions with the engaging grooves and sliding the engaging protrusions of the pressing body along the engaging grooves.

[0008]

Since the present invention is constructed as described above, when the aerosol contents are to be jetted,
The pressing body is pressed toward the aerosol container to press the stem. The pressing state of the stem is fixed, and the stem is continuously pressed even after the manual pressing force on the pressing body is released. Along with this pressing of the stem, the valve mechanism of the aerosol container is continuously opened, and the aerosol content tends to jet toward the injection nozzle via the stem.

[0009] However, a small amount of circulation piece is arranged at the introduction port communicating with the stem, and the introduction port is closed, and the pressing rod presses the small amount of circulation piece by the pressing force of the pressing piston.
Because the exit path of the pressing rod is closed by this small amount of distribution pieces,
Aerosol contents do not escape in large quantities.

However, a minute flow passage is formed in the minute circulation piece, and communicates the introduction port with the introduction chamber. Therefore, the aerosol content flowing out of the aerosol container to the inlet through the stem flows into the inlet chamber through the minute flow passage. Since the amount of the aerosol content flowing into the introduction chamber is very small, the pressure in the introduction chamber gradually increases and does not rapidly increase. In the ascending process, the pressing piston is pressed in the direction of the introduction chamber by the pressing ridge, and the pressing rod is pressed against the small amount of circulation pieces, so that the outlet path and the introduction port are not opened.

However, when a certain period of time elapses and the aerosol contents passing through the minute flow passage are sequentially accumulated in the introduction chamber, the pressure in the introduction chamber increases. When the rising limit becomes higher than the pressing force of the pressing piston toward the introduction chamber, the pressing piston is moved in the direction of the injection nozzle, that is, in the direction above the introduction chamber.

[0012] Since the pressing rod rises simultaneously with the raising of the pressing piston, the contact between the pressing rod and the very small circulation piece that has closed the lead-out path is released. Due to this opening, a small amount of the circulation piece rises due to the pressure of the propellant, so that the introduction port is opened, and a large amount of aerosol content flows into the introduction chamber through the introduction port at a time, and from the injection nozzle through the outlet path. Aerosol contents are ejected to the outside.

If the pressure of the propellant filled in the aerosol container at this time is higher than the pressing force of the pressing piston toward the introduction chamber, the entire aerosol content is discharged to the outside. Will be done. Further, the operator of the aerosol container operates the pressing body as described above to open the valve mechanism of the aerosol container, and then retracts to the outside or the like until the pressure in the introduction chamber increases,
It is possible to safely inject the aerosol contents.

The above-mentioned aerosol contents include a space insecticide, a cockroach insecticide, a horticultural insecticide, a rodenticide,
It can be used for insecticides for mites, insecticides for discomfort pests, repellents, insecticides for ants, other insecticides or antistatic agents, indoor deodorants, indoor fragrances, fungicides, and other household products. it can.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. (1) is an aerosol container filled with an appropriate aerosol content (9) as described above and as shown in FIG.
The mountain cup (2) is fixed to the upper end. An appropriate valve mechanism (not shown) is housed and fixed in the center of the mountain cup (2), and the stem (3) is connected to the valve mechanism so as to be able to advance and retreat. It protrudes outside. The stem (3) opens the valve mechanism by pressing in the direction of the aerosol container (1), thereby enabling ejection of the aerosol contents (9).

The mountain cup (2) has a shoulder cover (4) engaged and fixed at the upper end. This shoulder cover (4)
The pressing body (5) is engaged. The pressing body (5) has an engaging projection (6) protruding from the outer periphery of the lower end, and the engaging projection (6) is engaged with an engaging groove (7) formed in the shoulder cover (4). I have. The engaging groove (7) forms an inclined portion (8) inclined toward the aerosol container (1). When the engaging projection (6) is arranged above the engaging groove (7), the pressing body (5) does not press the stem (3). Also, a pressing portion provided in the direction of the aerosol container (1) of the engaging groove (7) via the inclined portion (8).
When the engaging projection (6) is moved to (10), the stem
(3) is pressed so that this pressed state can be fixed. The movement from the non-pressed state to the pressed state is made possible by rotating the pressing body (5).

A fitting member (11) is fitted and fixed to the lower end of the pressing body (5), and this fitting member (11) is attached to the stem.
Fitted and fixed to (3). And this fitting member (11)
An opening (12) for the aerosol contents (9) is opened at a communication portion between the stem and the stem (3). In addition, this introduction port (12)
Is fitted with a small number of distribution pieces (13) so as to be able to move up and down.

The micro flow piece (13) has a micro flow passage (14) in the center thereof through which a small amount of aerosol contents (9) can flow.
And an insertion portion (15) at the lower end to the inlet (12).
Is inserted. The insertion portion (15) is formed with a diameter smaller than the diameter of the introduction port (12), and the aerosol content (9) is provided between the outer periphery of the insertion portion (15) and the outer periphery of the introduction port (12).
Is formed as the flow interval (16).

The small circulation piece (13) has a T-shaped head (17) at the upper end, and the inlet (12) can be sealed with the lower surface of the T-shaped head (17). And Also, this T
The lower end of the pressing rod (18) is abutted against the upper surface of the character-shaped head (17), so that the lead-out path (20) formed on the pressing rod (18) can be sealed.

The pressing rod (18) is fixed to a pressing piston (21) arranged above the pressing body (5), and forms an injection nozzle (22) at the upper end of the lead-out path (20). The injection nozzle (22) is disposed so as to protrude outward from the upper part of the pressing body (5). A pressing piston (21) fixed to the pressing rod (18) is slidably disposed in the pressing body (5), and is disposed at a distance from the top plate (23) of the pressing body (5). The pressing body (5)
In the direction of the introduction chamber (25). This introduction room (2
5) is an inlet (12) in the pressing body (5) and the pressing piston (2).
1). Further, the pressing force of the pressing ridge (24) is set to a pressure weaker than the injection pressure of the aerosol contents (9), and the small amount of flow pieces (13) are pressed via the pressing rod (18).

Then, this small circulation piece (13) is
By being pressed by (18), as described above, the inlet (12) is closed and the outlet path (20) is closed. The micro flow passage (14) has a communication state between the introduction port (12) and the introduction chamber (25).

A separating wall (26) is disposed between the inlet (12) and the introducing chamber (25), and a pressing rod (18) is inserted through the separating wall (26). (18) forms an insertion port (27) capable of pressing the small amount of distribution piece (13), and a plurality of inlets (28) for the aerosol contents (9) are provided on the outer peripheral portion of the insertion port (27). Has formed. Further, the separation wall (26) has a function of abutting the minute distribution piece (13) at the time of spraying the aerosol content (9), and
At the time of large spill from the inlet (12) of (9), a small number of circulation pieces (13)
Is blown irregularly into the introduction chamber (25),
The position can be specified so that (20) is not closed.

In order to perform the delayed injection of the aerosol contents (9) in the above-structured apparatus, first, the pressing body
(5) is rotated, the engagement protrusion (6) slides along the engagement groove (7), and moves to the pressing portion (10) via the inclined portion (8). With the movement of the engagement protrusion (6) to the pressing portion (10), the pressing body
(5) presses the stem (3) via the fitting member (11).

By pressing the stem (3), the valve mechanism of the aerosol container (1) is opened, and the aerosol contents are opened.
(9) flows into the inlet (12). Then, as shown in FIG. 2, the aerosol contents (9) are supplied through the inlet (12) in a small amount.
It flows into the introduction chamber (25) through the micro flow passage (14) of (13). Then, the air in the introduction chamber (25) is pressurized.

[0025] However, this pressurization is caused by the aerosol contents.
Since the inflow of (9) into the introduction chamber (25) is performed through the minute flow passage (14), the inflow is performed slowly and the pressing piston
The pressing force in the direction of the introduction chamber (25) by the pressing ridge (24) of (21) is excellent, and the pressing piston (21) is not immediately pressed and moved. During this time, the operator of the aerosol container (1) can escape to the outside of the room or the like.

Then, the aerosol contents (9) are introduced into the introduction chamber (25) little by little through the minute flow passage (14), and the introduction amount exceeds a certain limit, and the introduction pressure is increased by the pressure generation. When the restoring force of (24) becomes superior, as shown in FIGS. 4 and 5, the pressing piston (21) is raised, and at the same time, the pressing rod (18) fixed to the pressing piston (21) is also raised.

As a result, as shown in FIGS.
Since the pressing force on the minute circulation piece (13) by (18) is released, the minute circulation piece (13) is pushed upward by the pressure of the aerosol contents (9), and opens the inlet (12). At the same time, the lead-out path (20) of the pressing rod (18) is also opened, so that the aerosol contents (9) rapidly flow into the introduction chamber (25) and pass through the lead-out path (20) of the pressing rod (18). Injection nozzle
(22) is injected to the outside.

[0028]

Since the present invention is constructed as described above, it is not necessary to use any high-viscosity material or the like for performing delayed injection of the aerosol container, so that the structure is simplified and the aerosol content is reduced. There is no risk of deterioration due to contact with highly viscous materials. In addition, since it is not necessary to process a high-viscosity material, a simple and inexpensive product can be obtained.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a closed state of a valve mechanism of an aerosol container.

FIG. 2 is a sectional view showing a state in which a valve mechanism is opened and a minute amount of aerosol contents (9) is jetted into an introduction chamber.

FIG. 3 is an enlarged cross-sectional view of a small circulation piece in FIG. 2;

FIG. 4 is a sectional view showing an injection state of an aerosol content (9).

FIG. 5 is an enlarged cross-sectional view showing a small number of distribution pieces in FIG. 4;

FIG. 6 is a front view of a pressing body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Aerosol container 3 Stem 4 Shoulder cover 6 Engagement projection 7 Engagement groove 8 Inclined part 9 Aerosol contents 13 Micro flow piece 14 Micro flow path 18 Press rod 20 Outgoing path 21 Press piston 22 Injection nozzle 25 Introducing chamber

Claims (2)

[Claims] 1. A pressing body capable of pressing a stem of an aerosol container and fixing the pressing position, and a pressing body having a pressure smaller than a pressure of a propellant in a direction of an introduction chamber of aerosol contents provided in the pressing body. A pressing piston that is urged, a pressing rod that is fixed to the pressing piston, and that projects an injection nozzle formed at the upper end outward from the pressing body and that forms an outlet path that communicates with the injection nozzle; A delay injection device for an aerosol, characterized in that the delay injection device for an aerosol is characterized by comprising an inlet opening communicating with the stem and a lead-out passage of the pressing rod, and a minute flow passage piece forming a minute flow passage connecting the stem and the introduction chamber. 2. The pressing groove of the pressing body is fixed at an engaging groove formed by projecting an engaging projection on the outer peripheral portion of the pressing body and providing a shoulder cover fixed to the aerosol container with an inclined portion toward the aerosol container. 2. The delay injection for aerosol according to claim 1, wherein the injection is performed by engaging the engagement protrusion with the engagement groove and sliding the engagement protrusion of the pressing body along the engagement groove. apparatus.