JP2002113398A - Automatic spray device for aerosol can - Google Patents

Abstract

PROBLEM TO BE SOLVED: To control the spray of an agent from a spray nozzle of an aerosol can even to one second or below with a simple structure. SOLUTION: In the automatic spray device for aerosol can, in which the aerosol agent inside the can body is sprayed by vertically erecting the spray nozzle 12 attached to a valve in a closed position in a normal state from the upper end of the can body 10 and displacing the spray nozzle from the vertical erecting state to turn the valve to the opened position and the aerosol can is housed in a housing chamber 21, a solenoid 1 for turning the valve to the opened position by letting a plunger 1' interact directly on the spray nozzle by excitation to displace the nozzle from the vertically erecting state is provided inside the housing chamber.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
In a normal state, the spray nozzle attached to the valve in the closed position stands upright, and by displacing the spray nozzle from the upright state, the valve is brought to the closed position, and the aerosol can spraying the aerosol agent inside the can body into the storage chamber. The present invention relates to an automatic spraying device for housed aerosol cans.

[0002]

2. Description of the Related Art At present, an automatic spraying apparatus for aerosol cans filled with an aerosol (a fragrance or an insecticide) on the market is configured to spray the aerosol by a motor and a plurality of gears or cams.

[0003]

However, when spraying is performed by a motor and a plurality of gears or cams as described above,
Since the number of parts is large, the apparatus is expensive and large, and there is a high possibility that gears, cams, and the like may malfunction. Further, it is required that the time required for a single spray of the fragrance or the like is 1 second or less. However, a gear and a cam cannot be operated at high speed with a structure including a motor and a plurality of gears or cams. It is difficult to control the spray time for one second or less.

[0004] Therefore, it is premised on these automatic spraying apparatuses that an aerosol can having a metering valve with a constant spraying amount is used as a standard. However, metering valves are more expensive than general valves.

[0005]

SUMMARY OF THE INVENTION The present invention does not use a motor and a plurality of gears or cams to spray an aerosol can.
It was developed for the purpose of realizing a low-cost and small-sized automatic spraying device by using a solenoid without the need for an expensive metering valve. A solenoid is provided in the housing of the can, in which the plunger is actuated directly on the spray nozzle by excitation and displaces the nozzle from an upright state to open the valve. The spray nozzle of the aerosol can is attached to a tilt valve, the solenoid is a push type, and the plunger of the aerosol can pushes and displaces the spray nozzle forward from an upright state by excitation. The spray nozzle of the aerosol can is attached to the push-down valve, even if the solenoid is a pull type and the plunger is to excite the spray nozzle from the upright state to tilt and displace it after excitation, The solenoid may be of a push type, and its plunger may be one that pushes down and displaces the spray nozzle from an upright state by excitation. Further, in the automatic spraying device according to the second aspect, it is preferable that an incompatibility means having a concave portion facing the spray nozzle and receiving the nozzle to the back is provided in the storage chamber. Further, in any of the automatic spraying devices described in the claims, between the upper end of the can of the aerosol can and the lower end of the spray nozzle, the nozzle is prevented from displacing from the upright state to open the valve. It is preferable to provide the stopper so as to be detachable forward.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
Is the storage case of the aerosol can, the rear wall, the left and right side walls,
An accommodation room 21 having an upper wall, a bottom wall, and a front door that can be opened and closed, and on the middle bottom plate 22 is an accommodation room 21 that stands up and accommodates an aerosol can. The front door is opened when the aerosol can is accommodated in the accommodation room 21 or taken out of the accommodation room, and the front door is closed after the housing or after taking out. Note that the partition plate 2 is located below the midsole plate 22.
The upper and lower chambers are divided into two upper and lower chambers, and a control device 24 is housed in the upper chamber.
A battery 25 as a power supply is housed in the lower chamber. The battery 25 and the control device 24 are connected to a solenoid described later by a lead wire, and the control device adjusts the energization time (excitation time), energization interval, and the like of the solenoid.

As is well known, an aerosol can is provided in a can body 10.
A tilt valve or a push-down valve (not shown) which is normally in a closed position is built in the upper end of the stem, and a stem tube 11 having a lower end connected to the valve erects from the upper end to the outside through the center of the upper end, A spray nozzle 1 having an injection port 13 is provided at the upper end of the stem tube 11.
2 is fitted and fixed.

FIG. 1 shows an embodiment of the automatic spraying device according to the first, second and third aspects of the present invention. In FIG. 1, an aerosol can is set up on an intermediate bottom plate 22 and stored in a storage chamber 21. Then, the upper part of the spray nozzle 12 having the injection port 13 protrudes upward from the front of the upper wall 26 having a short frontward length. The spray nozzle 12 is attached to a stem tube 11 having a lower end connected to a tilt valve. When the spray nozzle 12 is stored in the storage chamber 21, the aerosol in the can can be sprayed from the injection port 13 to the outside of the storage case.

In the automatic spraying apparatus according to the first and second aspects shown in FIG. 1, the push-type solenoid 1 is fixed laterally with the plunger facing forward under the upper wall 26, and the solenoid 1 is energized. When the plunger 1 'is excited, the plunger 1' moves forward and pushes the spray nozzle 12 in the upright state forward, thereby causing the spray nozzle to move to the stem tube 1 as shown by the broken line in FIG.
1 is tilted forward to open the tilt valve, and the can 10
The aerosol agent in the storage chamber 2 is discharged from the injection port 13 of the nozzle 12.
Spray out of 1. Then, the energization stops, and the solenoid 1
Is demagnetized, the plunger 1 'is pushed back to the original retracted position via the spray nozzle by the restoring force of returning the stem tube 11 to the upright state, the tilt valve is closed, and the spray is terminated. The start of the spray by excitation and the end of the spray by demagnetization are both instantaneous, and the control device 24 can control the spray time to 1 second or less.

A recess 27 corresponding to the cross-sectional shape of the spray nozzle 12 is provided at the front edge of the upper wall 26 of the storage case 20 so that the aerosol can provided with the spray nozzle having the cross-sectional shape corresponding to the recess can be properly placed in the storage chamber 21. The spray nozzle enters the recess only when the plunger 1 'is retracted, contacts the front end of the plunger 1' of the solenoid 1 at the retracted position, and advances the plunger 1 'by the excitation of the solenoid, whereby the spray nozzle is turned into the stem tube 1.
Each one is pushed forward and tilted to open the tilt valve, allowing spraying of the aerosol.

For example, as shown in FIG.
When the aerosol can having the spray nozzle 12 having the same cross-sectional shape is correctly accommodated in the accommodation chamber 21, the spray nozzle is turned into the concave portion 2 as shown by a solid line.
7, the apex of the rearwardly facing triangle of the spray nozzle abuts the front end of the plunger 1 'at the retracted position of the solenoid 1. Accordingly, when the solenoid is energized and energized, the plunger 1 'moves forward and pushes the spray nozzle 12 forward, whereby the tilt valve opens to spray the aerosol in the can body as described above. However, the spray nozzle 12
Has a cylindrical shape that can only partially enter the inside of the triangular concave portion 27 as shown by the broken line,
A space L is formed between the solenoid 1 and the front end of the plunger 1 'at the retracted position. In this case, even if the plunger 1 'moves forward by energizing the solenoid 1 and the plunger 1' moves forward, the plunger cannot sufficiently push the spray nozzle 12 forward due to the space L between the plunger and the nozzle. The valve does not open and no spraying takes place.

Conversely, as shown in FIG. 1D, when the spray nozzle 12 is cylindrical and the recess 27 is U-shaped, which is slightly wider than the diameter of the nozzle, the nozzle has the cylindrical spray nozzle. When the aerosol can is correctly accommodated in the accommodation room 21,
The spray nozzle enters the recess 27 as shown by the solid line,
The rear surface of the spray nozzle comes into contact with the front end of the plunger 1 'at the retracted position of the solenoid 1. Accordingly, when the solenoid is energized and energized, the plunger 1 'moves forward and pushes the spray nozzle 12 forward, whereby the tilt valve opens to spray the aerosol in the can body as described above. However, when the cross-sectional shape of the spray nozzle 12 is an isosceles triangle with the apex directed backward as shown by the broken line, and only partially enters the inside of the U-shaped recess 27, the rear end of the nozzle 12 and the solenoid 1 A space L is formed between the plunger 1 'at the retracted position and the front end. In this case, solenoid 1
When the plunger 1 'moves forward, the plunger cannot sufficiently push the spray nozzle 12 forward due to the space L between the plunger and the nozzle, and the tilt valve does not open. No spraying is done.

Therefore, the cross-sectional shape of the spray nozzle 12 and the recess 27 into which the nozzle can be inserted make up an incompatible means. When the concave portion 27 of the automatic spraying device for spraying agent has the above-mentioned triangular shape and the spray nozzle for the aerosol can of insecticide has the above-mentioned cylindrical shape, when the aerosol can of fragrance is stored in the storage chamber 21, the spray nozzle having a triangular cross section becomes By entering the triangular recess to the back and energizing the solenoid, it is possible to spray the fragrance as described above, but even if the aerosol can of insecticide is stored in the storage chamber, the cylindrical spray nozzle has a triangular shape. Because it does not enter the recess, the insecticide cannot be sprayed even when the solenoid is energized, and a U-shaped recess that allows the cylindrical spray nozzle to be inserted all the way to spray the insecticide. An automatic spray device can not have to use a, thereby preventing the spraying was loaded with another type of aerosol can the holding chamber.

The incompatibility means is that the above-mentioned automatic spraying device prevents spraying of different types of aerosols. For example, the concave portion 27 of the company A's automatic spraying device is triangular and the spray nozzle of the company's aerosol can is sprayed. Make the cross section triangular, B
The recess 27 of the company's automatic sprayer is U-shaped, and the spray nozzle of the company's aerosol can is cylindrical, so that the company's aerosol can can only be sprayed with the company A's automatic sprayer;
The company's aerosol cans can be sprayed only with Company B's automatic spraying device.

Although the recess 27 is formed at the front edge of the upper wall 26 in the illustrated embodiment, the recess 27 is not limited to the upper wall 26, but may be a support plate 28 for supporting the solenoid from below, or other aerosol cans housed in the housing chamber 21. It may be formed on an opposing member after the spray nozzle 12.

In the automatic spraying apparatus according to the first and third aspects shown in FIG. 2, the pull type solenoid 2 is fixed laterally below the upper wall 26 with the plunger facing forward. When energized by energizing the solenoid 2, a pair of detachable engaging members 3 a and 3 b are attached to the front end of the plunger 2 ′ which retreats and the rear surface of the spray nozzle 12 of the aerosol can stored in the storage chamber 21. Is provided. Therefore, when the aerosol can is accommodated in the accommodation chamber 21, the engagement member 3a of the spray nozzle is engaged with the engagement member 3b at the front end of the plunger 2 'at the advanced position to stand on the midsole plate 22.

When the solenoid 2 is energized and energized,
The plunger 2 'is retracted and the engaged engaging member 3
2A, the spray nozzle is tilted backward together with the stem tube 11 to open the tilt valve, and the can body is opened, as shown by the broken line in FIG. The aerosol agent in 10 is sprayed from the nozzle 12 to the outside of the storage chamber 21. Then, when the power supply is stopped and the solenoid 1 is demagnetized, the plunger 1 'is returned to the original forward position through the spray nozzle by the restoring force for returning the stem tube 11 to the upright state, the tilt valve closes, and the spray ends. .
The start of the spray by excitation and the end of the spray by demagnetization are both instantaneous, and the control device 24 can control the spray time to 1 second or less.

The spray nozzle 12 moves inside the upper wall 26 and the support plate 28 of the storage chamber 21 from the front edge to the rear so as not to prevent the spray nozzle in the upright state from leaning backward by excitation of the solenoid. A groove or space 29 is provided.

In the automatic spraying apparatus according to the first and fourth aspects shown in FIG. 3, the spray nozzle 12 of the aerosol can stored in the storage chamber 21 is attached to the stem pipe 11 having a lower end connected to a push-down valve. It is. Therefore, when the stem tube 11 is pushed down together with the spray nozzle, the push-down valve opens and sprays the aerosol in the can 10 from the nozzle 12, so that the upper wall 26
The push type solenoid 1 is fixed in the vertical direction with the plunger 1 'facing downward.

It is preferable that the plunger of this push type solenoid is normally urged upward by a spring or the like, and the lower end of the plunger is slightly separated from the upper end of the spray nozzle of the aerosol can stored in the storage chamber 21.

When the solenoid 1 is energized and energized, the plunger 1 'descends against the urging, and then, as shown by the broken line in FIG.
Is pressed down, and the aerosol in the can is sprayed from the injection port 13 of the nozzle. When the power supply to the solenoid is stopped and the solenoid is demagnetized, the spray nozzle 12 is restored to the upright state by the restoring force of the stem tube 11, and the plunger of the solenoid is moved upward by the restoring force of the stem tube and the spring. The plunger rises halfway with the force and stops in the upright state where the spray nozzle has risen, and further rises with an upward biasing force, and the plunger stops at a position where its lower end is slightly away from the upper end of the spray nozzle.

Thus, the aerosol can can be accommodated in the accommodation room 21 without being obstructed by the plunger, or can be taken out.

The plunger 1 'of the push-type solenoid 1 shown in FIG. 1 may be kept in a retracted position in which the front end is slightly away from the spray nozzle in a normal state by an urging force of a spring or the like. In this case, the plunger is advanced by the excitation of the solenoid, and then contacts the spray nozzle in the upright state and pushes the nozzle forward, and the spray nozzle is tilted forward together with the stem tube 11 to open the tilt valve to spray the aerosol agent. I do. When the solenoid is demagnetized, the spray nozzle 12 is restored to an upright state by the restoring force of the stem tube 11, and the plunger of the solenoid is retracted halfway by the restoring force of the stem tube and a backward biasing force such as a spring. After stopping in the upright state, the plunger is further retracted by the backward biasing force, and the plunger stops at a position where its front end is slightly away from the spray nozzle. Therefore, when the aerosol can is accommodated in the accommodation chamber 21, it is possible to prevent the rear surface of the spray nozzle 12 from colliding with the front end of the plunger 1 'and causing erroneous spraying.

In the illustrated embodiments, between the upper end 10 ′ of the can body of the aerosol can and the lower end of the spray nozzle 12
In advance, the nozzle is displaced from the upright state to the forward tilt, the backward tilt, or the depressed state to open the tilt type valve or the depressed type valve, and the stopper 30 that prevents spraying of the aerosol agent can be removed forward. It is preferable to provide them. This stopper 30 is shown at (E) in FIG. 1, and at (D) in FIGS. 2 and 3, and its mounting state is (F) in FIG. 1, (E) in FIG.
FIG. 3C shows this.

In any case, the stopper 30 is formed with a thickness of a stopper plate 31 that can be inserted between the upper end 10 'of the can body and the lower end of the spray nozzle 12, and a part of the stopper plate from the rear end to the front. Insertion groove 32 of stem tube 11
And standing from both sides and the front of the stopper plate, and spray nozzle 1
It has a U-shaped surrounding wall 33 that surrounds both sides and the front side of the lower end of the second unit 2 and is formed of, for example, a synthetic resin.

Therefore, the insertion groove 32 of the stopper 30 is fitted into the stem tube 11 from the front, and the stopper plates 31 on both sides of the insertion groove are connected to the can body 1 until the stem tube 11 is located deep inside the insertion groove 32.
0 ′ and between the lower end of the spray nozzle 12
By surrounding both sides and the front side of the lower end of the spray nozzle with the surrounding wall 33, the spray nozzle 12 cannot be tilted or pushed down in any direction. Thus, when the aerosol can is stored in the storage chamber 21, the spray nozzle does not move and is displaced even if the spray nozzle collides with the plungers 1 ', 2' of the solenoids 1, 2, so that the aerosol agent is wasted. Incorrect spraying can be prevented. And accommodation room 2
After being stored in 1, the stopper can be turned forward by turning the can and pulled out from the open front door.

The effect of the stopper 30 is that when the injection port 13 of the spray nozzle is provided on the side surface of the nozzle as shown in FIG. 3, the injection port 13 is correctly directed forward. For example, in FIG. 3, when the injection port 13 faces the side wall or the rear wall, the sprayed aerosol is trapped in the storage chamber, and the spraying effect to the outside of the storage chamber is weakened. In this case, if the stopper 30 is inserted between the upper end 10 ′ of the can body and the lower end of the nozzle 12 from the side surface where the injection port 13 is provided, the stopper 30 is pulled out after the aerosol can is stored in the storage chamber 21. It is necessary to turn the can and turn the stopper forward.
Numeral 3 always faces forward, and when sprayed, the aerosol comes out of the storage chamber and does not impair the spraying effect.

Reference numeral 20 'denotes a double-sided adhesive tape for holding the storage case 20 upright on a wall or the like. However, the storage case is not limited to being used upright. You may.

[0029]

According to the present invention, since the spray is performed by directly displacing the spray nozzle in the upright state by the solenoid, there is no need to use an aerosol can using an expensive metering valve.
One spraying time can be controlled to 1 second or less. Also, there is no increase in the number of parts, an increase in size, and no malfunction as in the case of using a motor, gears and cams.

[Brief description of the drawings]

1 (A) is a longitudinal sectional side view showing an embodiment of the automatic spraying device of claim 2 of the present invention, (B) is a plan view of the same,
(C) and (D) are explanatory views showing the relationship between the cross-sectional shape of the spray nozzle and the concave portion, (E) is a perspective view of the stopper, and (F) is a cross-sectional view showing the use state of the stopper.

2 (A) is a longitudinal sectional side view showing an embodiment of the automatic spraying device according to claim 3 of the present invention, FIG. 2 (B) is a cross-sectional plan view taken along the line bb of the above, and FIG. FIG. 4 is an enlarged view of a main part, (D) is a perspective view of a stopper, and (E) is a cross-sectional view illustrating a use state of the stopper.

3 (A) is a vertical sectional side view showing an embodiment of the automatic spraying device according to claim 4 of the present invention, FIG. 3 (B) is a cross-sectional plan view taken along the line bb of FIG. 3, and FIG. FIG. 3D is a perspective view, and FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Push type solenoid 1 'Plunger same as above 2 Pull type solenoid 2' Plunger same as above 10 Can body of aerosol can 11 Stem tube 12 Spray nozzle 13 Spray nozzle of spray nozzle 20 Storage case 21 Storage room of aerosol can 26 Upper wall of storage case 27 recess 30 stopper

Claims (6)

[Claims] 1. A spray nozzle attached to a valve which is normally in a closed position stands upright from an upper end of a can body. By displacing the spray nozzle from the upright state, the valve is brought to an open position, and the inside of the can body is opened. In an automatic spraying device for an aerosol can in which aerosol cans for spraying an aerosol agent are housed in a housing chamber, a plunger is directly actuated to the spray nozzle by excitation in the housing chamber, and the nozzle is displaced from an upright state to a valve. An automatic spraying device for an aerosol can, provided with a solenoid for opening the aerosol. 2. The aerosol can automatic spraying device according to claim 1, wherein the spray nozzle of the aerosol can is attached to a tilt valve, a solenoid is a push type, and a plunger thereof excites the spray nozzle from an upright state. An automatic spraying device for an aerosol can, characterized in that the device is pushed and tilted to be displaced. 3. The automatic spraying device for an aerosol can according to claim 1, wherein the spraying nozzle of the aerosol can is attached to a tilt valve, the solenoid is a pull type, and a plunger of the spraying nozzle makes the spraying nozzle return from an upright state by excitation. An automatic spraying device for aerosol cans, characterized in that it is tilted and displaced. 4. The automatic spraying device for an aerosol can according to claim 1, wherein the spraying nozzle of the aerosol can is attached to a push-down valve, the solenoid is a push type, and a plunger of the spraying nozzle causes the spraying nozzle to be turned upright by excitation. An automatic spraying device for aerosol cans, which is displaced by pushing down. 5. The automatic spraying device for an aerosol can according to claim 2, wherein an incompatibility means having a concave portion facing the spray nozzle and receiving the nozzle to the back is provided in the storage chamber. Aerosol can automatic spraying device. 6. The automatic spraying apparatus for an aerosol can according to claim 1, wherein the nozzle is displaced from an upright state between an upper end of a can body of the aerosol can and a lower end of the spray nozzle. An automatic spraying device for an aerosol can, characterized in that a stopper for preventing the valve from being brought to the open position is detachably provided forward.