JPH0541794Y2 - - Google Patents

Description

[Detailed explanation of the idea] Industrial applications The present invention relates to an aerosol spray device.

Conventional technologies and their problems There are various types of aerosol spraying devices, such as those containing insecticides and fragrances in the aerosol, but in all of them, spraying is performed manually by differentially moving the spray nozzle, so it is necessary to spray only once. The spray amount varies from person to person, making it difficult to optimize the amount. Furthermore, since the time interval of spraying is not constant, the concentration of the drug in the room fluctuates widely, making it difficult to obtain an appropriate medicinal effect. Furthermore, it has been impossible to meet the demand for continued medicinal efficacy even after bedtime.

The present invention solves the problems of the conventional technology, makes it possible to maintain the amount of spray per time and the time interval between sprays, and to optimize the amount of drug spray. The purpose of the present invention is to provide an aerosol spraying device that can maintain the medicinal effect without the intervention of the drug.

Means for Solving the Problems The object of the present invention is to provide an aerosol container equipped with a spray nozzle through a tail valve that opens an aerosol passage by tilting the tail stem, and tilting and tilting the tail stem of the tail valve by the operation of a drive motor. a drive unit for returning the tail stem, a power supply unit for the drive motor, a timer for emitting a drive signal at regular time intervals, and a timer for detecting the return of the tail stem from the tilted state or a corresponding operation of the drive unit; a detection unit that issues a stop signal;
This is achieved by an aerosol spraying device characterized in that it includes a control section that closes a circuit connecting the power supply section and the drive section based on the drive section signal and opens the circuit based on the stop signal.

The aerosol uses DME as the propellant.
Gas, fluorocarbon gas, LPG, etc., kerosene as a solvent,
Various drugs such as kerosene, water, insecticides, perfumes, bactericidal agents, deodorants, inhalants, repellents, etc. can be used. If spraying is to be repeated at regular intervals over a long period of time, it is desirable to reduce the ratio of solvent to chemical agent compared to normal manual aerosol spraying equipment to reduce floating of the solvent and adhesion to floors and walls. . For this purpose, reduction of the injection gas pressure, narrowing of the nozzle diameter, shortening of the injection time, etc. can be appropriately adopted for one spray amount.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

The aerosol spray device shown in FIGS. 1 and 2 includes an aerosol container 10 and a spray control device 2.
0. The aerosol container 10 is
An aerosol is sealed in a container consisting of a cylindrical container body 30, a tail valve 40 and a spray nozzle 50 attached to the upper part of the container body. Various types of tail valves 40 that are configured to open the passage by tilting the tail totem can be adopted as appropriate. Figure 3 shows one example, where the mounting cup 3 at the top of the container
1. A tail stem 41 is held at the center. The tail stem 41 has a lower bowl-shaped portion 46 tightly pressed against a gasket 42 fixed to the inner surface of the cup 31 by a coil spring 43.
It extends upward through the gasket 42 and the cup 31, and is provided with a spray nozzle 50 at its tip. A through hole 47 is provided in the inner wall of the bowl-shaped portion 46 as shown in the figure. A support tube 44 hangs down from the inner surface of the cup 31 so as to surround the bowl-shaped portion 46, its lower end is connected to the immersion tube 32 into the liquid in the container, and its middle portion supports the lower end of a coiled spring 43. A gas phase introduction hole 45 is provided in the side wall of the support tube 44 . Since the tail valve 40 is configured in this manner, when the tail stem 41 is inclined against the coil spring 43 by an external force, the upper edge of the bowl-shaped portion 42 partially separates from the gasket 42 and the support cylinder 44
This allows the liquid inside to pass through and be ejected in the form of mist from the nozzle 50 through the through hole 43.

As shown in FIGS. 1 and 2, the spray control device 20 includes a drive section 60 having a drive motor 61, a power supply section 70, a timer 80 that issues a drive signal at regular time intervals, and a drive section 60 that includes a drive motor 61. A detection unit 90 that interlocks and issues a stop signal, a control unit 100 that opens and closes a circuit connecting the battery 71 and the drive motor 61 based on the drive signal and the stop signal, and are attached to the container body to surround these. A casing 110 is provided. The drive unit 60 further includes a drive motor 6
a reduction gear 62 coupled to the rotation shaft of the first rotation shaft; a disc cam 64 fixed to the output shaft 63 of the reduction gear;
The output shaft 63 is provided with a drive plate 65 that is engaged with the output shaft 63 through an elongated hole 66, and a projecting piece 67 that functions as a cam follower of the disk cam 64 is provided on the lower surface of the drive plate 65 in a protruding manner. The power supply unit 70 includes a battery 71 and an actuation switch 72 that is operated from outside the casing. The timer 80 is configured to emit drive pulse signals at appropriate time intervals ranging from seconds to hours depending on the application of the spraying device, and the intervals can be adjusted as necessary. The timer 80 is preferably a pulse generation circuit using an IC in order to reduce power consumption and downsize the device. Detection part 9
0 is equipped with a contactor 91 that contacts the peripheral surface of the disc cam 64 with a spring force, and when the contactor 91 is moved in contact with the vicinity of the maximum radius of the cam 64, the indenter 92 is pushed. is configured to issue a stop pulse signal. In this example, the ON/OFF switching signal from the limit switch 93 is converted into a stop pulse signal through a chattering prevention circuit as shown in FIG. 4. FIG. 5 shows an example of a chattering prevention circuit. Control unit 100
is configured to close a circuit connecting the power supply section 70 and the drive motor 61 based on a drive signal from a timer 80, and to open the circuit based on a stop signal from a detection section 90. Such a configuration may include, for example, a bistable circuit that uses the drive signal and stop signal as set and reset inputs (see FIG. 4).

Therefore, in this spray device, the disk cam 64 is normally in a state in which the contactor 91 is moved near its maximum radius, the drive motor 61 is at rest, and the tail stem 41 is in a state in which it stands vertically. be.
The timer 80 is activated by turning on the operating switch 72.
starts operating and issues a drive signal after a certain period of time, the circuit is closed and the drive motor 61 rotates.
As a result, the disc cam 64 is rotated at a constant speed, and the protruding piece 67 is pushed and moved by the portion having a long radius. Since the drive plate 65 is capable of horizontal movement through the elongated hole 66, it moves toward the tail stem 41 together with the protrusion 67, and as a result, the tail stem 41 tilts to open the tail valve 40 and aerosol is injected. . As the disc cam 64 further rotates, the projection 67 returns to its original position together with the drive plate 65, the tail stem 41 moves to the upright side, and the injection stops. As a result, spraying is performed for a certain period of time. During this time, the contact 91 of the detection unit 90 is moving toward the shaft side of the cam 64, but when the cam 64 rotates further, the contact 91 is moved near the maximum radius portion. As a result, the indenter 92 is pushed and moved, the detection section 90 issues a stop signal, the control section 100 opens a circuit based on the stop signal, and the drive motor 61 stops. After this, the drive signal of the timer 80 is transmitted after a certain period of time, the same operation as described above is repeated, and the aerosol is sprayed at certain time intervals.

In the above example, a battery is used as the power supply section, but it goes without saying that the power supply section can also be configured as a connection section to an external power supply. Further, as the timer, a single-acting timer may be used if the timer is returned to the time-lapse start state every time the circuit is opened based on the stop signal, and thereby a drive signal is generated at fixed time intervals. The time for one spray can be determined as appropriate by changing the size or shape of the cam, changing the motor rotation speed or reduction ratio, or changing the engagement position of the drive plate and tail stem or the attachment position of the protrusion. can. In addition to the cam of the drive section, the detection section can also directly detect the return of the tail section to the upright position using a position sensor or the like and issue a stop signal.

Effects of the Invention As is clear from the above explanation, according to the present invention, the drive motor is rotated and stopped based on the drive signal from the timer and the stop signal from the detection unit to open and close the valve of the aerosol container. 1
The amount of spray and the time interval between sprays become constant depending on the rotational speed of the motor, the positional relationship of the valve operating drive unit, the timer transmission interval, etc., making it possible to optimize the amount of drug spray and the timer function. It is possible to provide an aerosol spray device that can maintain the medicinal effect even after going to bed without manual intervention. In particular, in the present invention, a tailed valve that requires a small driving force is used as the valve, and its opening and closing are performed by a motor, so that reliable operation can be achieved with a small driving current. Furthermore, since the motor is stopped using timer control except when opening/closing the valve, power consumption is reduced. Therefore, even when using a small power source such as a battery, reliable operation can be obtained over a long period of time. Furthermore, while the drive motor is started based on a timer, the drive motor is stopped by detecting the return of the tail stem from its tilted state or the corresponding operation of the drive unit. Regardless of the operation of the tail stem, etc.
For example, the valve does not stop at the open position due to malfunction of the timer, and the reliability of stopping the spraying is guaranteed.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, in which Fig. 1 is a front view partially showing an aerosol spray device, and Fig. 2
The figure is a plan view, FIG. 3 is a vertical cross-sectional view showing details of the tail valve, and FIG. 4 is a schematic diagram schematically showing a circuit connecting the drive section, power supply section, detection section, and control section.
FIG. 5 is a circuit diagram showing an example of a chattering prevention circuit. DESCRIPTION OF SYMBOLS 10... Aerosol container, 20... Spray control device, 30... Container body, 40... Tailt valve, 41... Tailed stem, 50... Spray nozzle, 60... Drive unit, 61... Drive motor, 65
... drive plate, 70 ... power supply section, 80 ... timer, 90 ... detection section, 100 ... control section.

Claims (1)

[Scope of utility model registration request] an aerosol container equipped with a spray nozzle via a tail valve that opens an aerosol passage by tilting the tail stem; a drive unit that tilts and returns the tail stem of the tail valve through operation of a drive motor; and a power supply unit for the drive motor. a timer that issues a drive signal at regular time intervals; a detection unit that detects the return of the tail stem from the tilted state or a corresponding operation of the drive section and issues a stop signal; and a detection section that issues a stop signal based on the drive section signal. An aerosol spraying device comprising: a control section that closes a circuit connecting a power supply section and a drive section and opens the circuit based on the stop signal.