JPH05104040A - Sprayer - Google Patents

Abstract

PURPOSE:To provide a compact small-sized sprayer capable of performing continuous spray only by the operation of an operation lever but not by the pressure preliminarilly accumulated by the operation of a piston lever. CONSTITUTION:A liquid is introduced into the pressure chamber 7 provided in a sprayer main body 1 from a tank 2 and, when the amount thereof exceeds a predetermined amount, the wall surface 12 between the pressure chamber 7 and the pressure accumulating chamber 13 adjacent thereto is moved to compress the pressure accumulating chamber 13. When the pressure of the liquid reaches a value opening the valve of the nozzle 9 communicating with the pressure chamber 7 or more, the liquid is sprayed from the nozzle 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small and lightweight atomizer capable of continuously spraying various liquids such as water, detergents, disinfectants, insecticides and paints without using a pressurizing air pump or a piston rod.

[0002]

2. Description of the Related Art As a conventional small-sized atomizer, for example, as shown in Japanese Utility Model Publication No. Sho 54-111282, liquid spraying is performed only when an operating lever called a trigger is operated, or, for example, Japanese Utility Model Publication No. 55-51566. As disclosed in the official gazette, there is a method in which an air pressure in a container is increased by operating a piston punch, and the liquid in the container is pressurized by this air pressure, and a nozzle is opened to continuously eject.

[0003]

Since the conventional sprayer is constructed as described above, the former sprayer sprays the liquid only when the operating lever is pulled, and when the operating lever returns to the original position, the liquid spraying stops. Liquid spray is performed only intermittently.
In addition, the latter sprayer allows continuous liquid spraying, but since the pressure inside the container must be stored in advance by operating a piston punch provided in addition to the operating lever, the operation is extremely troublesome and the structure is There was a problem that it was complicated and large. Therefore, the present inventor previously proposed a small and lightweight atomizer capable of performing continuous atomization only by operating the operating lever in order to solve the above-mentioned conventional problems (Japanese Patent Application No. 2-8).
353).

However, in this atomizer, since the atomizer main body and the tank are connected by a flexible tube and the elastic force of the tube enables continuous atomization, the tube requires a certain length or more. Therefore, it is suitable for wide outdoor use such as a sprayer for gardening, etc., but if it is used for a smaller sprayer for household use such as indoor mist spray, detergent, insecticide, etc., a long pipe will interfere. It wasn't always suitable. Therefore, the present invention relates to the above improvement, and an object thereof is to obtain a sprayer which is more compact, has a simple structure, and is capable of continuous spraying.

[0005]

The atomizer according to the present invention comprises:
A sprayer main body, a trigger handle attached to the sprayer main body, and a valve that opens and closes by operation of the trigger handle to suck the liquid from the tank and introduce the liquid into the pressure chamber in the sprayer main body are provided. When the amount of the introduced liquid exceeds the capacity, the wall surface between the pressure chamber and the storage chamber moves to reduce the volume of the storage chamber, and the pressure of the storage chamber of the nozzle communicating with the pressure chamber. The liquid is sprayed from the nozzle when the pressure exceeds a value that pushes open against the spring provided in the valve. In addition, the upper half of the trigger handle has a substantially U-shaped cross section and the lower half has a substantially inverted U-shape, and the liquid dripping from the nozzle travels through the U-shaped and inverted U-shaped grooves to form the trigger handle. A hole may be provided in the boundary surface between the upper half part and the lower half part so as to flow to the side opposite to the holding hand.

[0006]

In the atomizer according to the present invention, the liquid is sprayed from the nozzle when the pressure in the storage chamber reaches more than the pressure at which the valve of the nozzle communicating with the pressure chamber is pushed open. By moving the handle to increase the amount of liquid introduced into the pressure chamber and increasing the pressure to the pressure storage chamber, and if this liquid pressure is maintained above the pressure that pushes the nozzle open, atomization is performed even when the trigger-handle is returned. .. That is, continuous spraying is possible with a simple and compact structure that does not require a special pressurizing device.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an enlarged front view of a sprayer main body of the present invention. In this figure, reference numeral 1 is a sprayer main body, which is placed on a tank 2 which stores various liquids such as water and detergent. The sprayer body 1 also has a trigger handle 3 on which a pivot shaft 4 is attached.
It is rotatably mounted by operating the trigger handle 3 to open and close the valve 6 provided in the first liquid passage pipe 5 that connects the sprayer body 1 and the tank 2 to each other. The liquid is sucked and pushed out and is sent to the pressure chamber 7 provided in the sprayer main body 1. The liquid introduced into the pressure chamber 7 is further fed via the second liquid passage pipe 8 to the nozzle 9 provided at the tip of the sprayer main body 1 to be sprayed. The trigger-handle 3 includes a piston 10 of the atomizer body 1.
The rear end abuts, and the piston 10 is constantly urged by the spring 11 in the direction of separating the trigger handle 3 from the sprayer main body 1. Further, a pressure storage chamber 13 is adjacent to the pressure chamber 7 via a wall surface 12 forming the pressure chamber, and the wall surface 12 is supported by a spring 14 which is always biased in a direction to reduce the volume of the pressure chamber 7. ing.

Next, the operation of the above embodiment will be described.
When the trigger handle 3 is rotated about the shaft 4 as a fulcrum, the piston 10 is pushed against the spring 11. Then, when the operating force of the trigger-handle 3 is released, the piston 10
Is pushed out by the spring 11. Therefore, the inside of the first liquid passage pipe 5 in the sprayer main body 1 has a negative pressure, and the suction valve 6 is opened to suck the liquid in the tank 2. Then, when the trigger handle 3 is rotated again to push in the piston 10, the liquid opens the press-fitting valve 15 and enters the pressure chamber 7. The operation of the trigger handle 3 is repeated 3 to 5 times, and when the liquid introduced into the pressure chamber 7 exceeds the capacity of the pressure chamber 7, the wall surface 12 resists the spring 14 in the direction of compressing the storage chamber 13. The liquid is ejected from the nozzle 9 when the pressure in the storage chamber 13 reaches or exceeds the pressure of the spring 17 of the valve 16 of the nozzle 9 to push and open the valve 16.

Thereafter, by continuously operating the trigger handle 3, if the amount of liquid drawn out by one operation of the handle 3 is made larger than the amount sprayed from the nozzle 9, the trigger handle 3 When 3 is returned to its original state (it returns in a short time because it is returned by the spring 11), the liquid spray from the nozzle 9 continues until the air pressure in the storage chamber 13 becomes lower than a predetermined value (the pressure at which the valve 16 of the nozzle 9 is closed). It is performed continuously. Then, after the operation of the trigger-handle 3 is stopped, the air pressure inside the storage chamber 13 decreases due to liquid spraying, and when the air pressure falls below a predetermined value, the valve 1
6 is closed and continuous spraying of liquid is stopped. At this time, the pressure is stored in the storage chamber against the spring 14, so that in the next operation of the trigger-handle 3, the liquid is continuously sprayed immediately after the first operation of the handle 3. In addition, it is desirable that the diameter of the storage chamber 7 is twice or more the diameter of the piston 10 so that the handle can be smoothly operated.

FIG. 2 is an enlarged perspective view of the trigger handle 3. The upper half 3a of the trigger handle 3 has a substantially U-shaped cross section (FIG. 3), and the lower half 3b has a substantially inverted U-shaped (first). (FIG. 4), and a liquid inflow hole 19 is provided in the boundary plate 18 between the upper half 3a and the lower half 3b. As a result, when the liquid spray is stopped, the liquid dripping from the nozzle 8 is
Since it passes through the U-shaped groove of the trigger plate 3 through the liquid inflow hole 19 of the boundary plate 18 and the substantially inverted U-shaped groove of the lower half 3b, the finger applied to the outer side of the lower half 3b of the trigger-handle 3 is not exposed to the liquid. There are advantages. In the figure, 20 is a stopper.

[0011]

As described above, according to the present invention, since the pressure chamber 7 and the storage chamber 12 adjacent to the pressure chamber 7 for accumulating the pressure are provided in the sprayer main body 1, the pressure of the storage chamber 12 is equal to that of the nozzle 9. Valve 1
Press and hold 6 to open the trigger-handle 3
The liquid can be continuously sprayed irrespective of the action of.
Moreover, because the continuous spraying of liquid does not require the conventional pressurizing air pump or the piston rod to operate it, it also eliminates the need for a flexible pipe that connects the sprayer body to the tank, making it more compact. Can be achieved. Further, since there is no need for chlorofluorocarbon as a liquid spray agent, there is an effect that it does not cause the ozone layer depletion which is a problem at present.

[0012]

[Brief description of drawings]

FIG. 1 is an enlarged front view of a sprayer body of the present invention.

FIG. 2 is an enlarged perspective view of a trigger-handle portion.

FIG. 3 is a cross-sectional view taken along the line AA in FIG.

FIG. 4 is a cross-sectional view taken along the line BB of FIG.

[Explanation of symbols]

 1 Nebulizer Main Body 2 Tank 3 Trigger Handle 6 Valve 7 Pressure Chamber 9 Nozzle 12 Wall Surface 13 Pressure Storage Chamber 16 (Nozzle) Valve

Claims (2)

[Claims] 1. A sprayer main body, a trigger handle attached to the sprayer main body, and a valve that opens and closes by operation of the trigger handle to suck liquid from a tank and introduce it into a pressure chamber in the sprayer main body. When the amount of liquid introduced into the pressure chamber exceeds a predetermined amount, the wall surface forming the pressure chamber moves to reduce the volume of the pressure storage chamber adjacent to the pressure chamber, and the pressure of the pressure storage chamber decreases A sprayer, characterized in that a liquid is sprayed from the nozzle when the valve of the nozzle communicating with the nozzle is pushed and opened. 2. A cross section of the upper half of the trigger handle is formed in a substantially U shape, and a lower half is formed in a substantially inverted U shape, and the liquid dripping from the nozzle has grooves of the U shape and the inverted U shape. A sprayer according to claim 1, characterized in that a hole is provided in the boundary surface thereof so as to flow along the side opposite to the hand holding the trigger handle.