JPS6159783B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sprayer, and particularly to a pressure accumulation type sprayer in which air in a container is pressurized in advance by a pump.

Aerosol type sprayers are widely known as sprayers. Aerosol sprayers can continuously spray sufficiently pressurized liquid and have the advantage that anyone can easily use them. However, since it contains high-pressure gas such as Freon gas, the liquid storage container must be a pressure-resistant container such as a metal can. Further, although high pressure gas is ejected together with liquid, Freon gas, which is commonly used as high pressure gas, is known to cause air pollution.

On the other hand, manual sprayers, such as trigger type or push button type, use high pressure gas.
The liquid is pressurized and sprayed by the pump operation by rotating the trigger or lowering the push button. Therefore, there is no need to use a pressure container, and there is no risk of air pollution. However, in known manual atomizers, liquid is pressurized and atomized with each pump operation. The state of the spray is closely related to the pressure applied, and a large pressure must always be applied to obtain sufficiently atomized spray. In addition, pump operations must be repeated to achieve continuous spraying.

In order to eliminate the drawbacks of the known manual sprayers, an accumulator type sprayer has been provided in which high pressure air is stored in the container in advance by sliding the cap. In this atomizer, the nozzle is lowered not for pumping but simply to open the atomizing valve. When the nozzle descends, the liquid inside the container is pressed by the highly pressurized air inside the container.
It is continuously atomized and atomized through a spray valve.

The object of the present invention is to provide a pressure accumulation type sprayer that accumulates high pressure air in a container without sliding the cap, and in which liquid can be easily replenished.

Therefore, according to the present invention, a cylinder body is detachably attached to the bottom of the container, and a piston body slides inside the cylinder body to pressurize the air inside the cylinder body. Pressurized air is sent from the cylinder body into the container via the pressure accumulation valve.

Preferred embodiments of the present invention will be described in detail below with reference to the drawings.

A pressure accumulator type sprayer 10 according to a preferred embodiment of the invention includes a valve housing 14 mounted to the top of a plastic container 12 and a cylinder body 16 mounted to the bottom of the container.

The valve housing 14 is inserted into the container 12 as shown.
It is preferable to integrally mold the parts with the parts, since the number of parts can be reduced and assembly can be facilitated. and valve housing 1
4 houses a spray valve 18, which includes a plastic stem 20, a rubber gasket 22 capable of closing a horizontal hole 21 of the stem, and a metal compression coil spring 24. The spray valve 18 is housed in the valve housing by screwing a mounting ring 26 into the female threaded portion of the valve housing 14. The stem 20 of the spray valve is connected to the container 1
It is fitted into a channel 30 formed in a push button 28 which also serves as a nozzle and is located in a recess 27 (see FIG. 2) at the top of the device. In addition, a valve 1 for spraying the liquid in the container 12 is placed at the lower end of the valve housing 14.
A pipe 31 leading to 8 is attached. Therefore, by lowering the push button 28 against the biasing force of the spring 24, the occlusion of the horizontal hole 21 of the stem by the gasket 22 is released, and thereby the spray valve 18 communicates the inside of the container with the atmosphere and sprays. It becomes possible. The spray valve 18 is shown in FIGS. 3A and 3B.
As shown in the figure, the stem and the compression spring can be integrally molded from plastic, and this configuration has the advantage of reducing the number of parts and facilitating assembly.

The container 12 has a level bar 3 extending downward from the top.
2, and this level bar acts as a reference for the water level of the replenishing liquid when the container is inverted and the liquid is replenished into the container, as will be described later. Also container 12
As shown in Fig. 4, the container is integrally provided with a large number of ribs 34 extending in the radial direction on its inner surface, so that the strength of the container, especially in the radial direction, is sufficiently reinforced, and it is resistant to high pressure air. I can withstand it too.

A cylinder body 16 is screwed onto the bottom of the container 12 and extends into the container. The cylinder body 16 integrally includes an inner wall 36 and an outer wall 38.
is screwed onto the lower end of the container 12 and clamps the lower end of the container between the inner and outer walls. Further, an O-ring 40 is disposed between the cylinder body 16 and the container 12 to ensure liquid tightness therebetween. Since the lower end of the container is thus sandwiched between the inner wall 36 and outer wall 38 of the cylinder body 16, the threaded engagement between the cylinder body and the container is sufficiently ensured, and liquid leakage can be sufficiently prevented.

The cylinder body 16 is provided with a pressure accumulation valve 42 at its inner end. As shown in FIG. 5A, this pressure accumulation valve 42 includes a valve body 48 that is connected to a main body 44 via three swinging pieces 46 and is movable in the axial direction. The illustrated pressure accumulating valve 42 is fitted into the inner circumferential surface of the cylinder body 16, but as shown in FIG. You may. Further, as shown by the chain line in FIG. 5B, the valve seat protection wall 52 of the pressure accumulation valve 42 is connected to the cylinder body 16.
It may be provided integrally. The presence of this protective wall 52 prevents the valve body 48 from shifting laterally, and the close contact of the valve body to the valve seat is further ensured.

The piston body 54 made of a hollow body is the cylinder body 1
It is housed in the cylinder body so as to be slidable along the inner peripheral surface of 6. The piston body 54 is the cylinder body 16
an air suction valve 5 that allows air to flow into a pressurized chamber 56 defined by the piston body and the piston body;
a pair of pistons 60 having pistons 8 and 59, respectively;
61. Here, the piston 61 is formed to have a smaller diameter than the piston 60, and the small diameter piston 61 is slidably housed within the large diameter piston 60. These valves 58 and 59 have a valve body connected to the main body by a rocking piece, similar to the valve 42 of the cylinder body 16. Large diameter piston 6
0 has a large number of air intake holes 6 as shown in FIG.
4, and can be locked to the cylinder body by a locking means 66. It is sufficient that the locking means 66 has a structure that locks the piston body to the cylinder body 16 or the container 12 when the piston body 54 is not sliding. The structure is not limited to the structure in which the engagement protrusion 70 formed in 38 is engaged, but various other structures can be adopted.

The sprayer 10 having the above configuration is operated as follows. First, the container 12 is inverted and the cylinder body 16 is
is rotated to unscrew the container 12 and remove the cylinder body together with the piston body 54 from the container. Since the push button 28 is completely housed in the recess 27 at the top of the container, the push button will not be pressed even if the container 12 is turned upside down. Then, the liquid is replenished into the container 12 up to the tip of the level rod 32, for example. In the sprayer 10 of the present invention, the valve housing 14 is attached to the top of the container, and the cylinder body is attached to the bottom of the container, so that the valve housing and the cylinder body are completely separated. Therefore, liquid replenishment can be accomplished by simply removing the cylinder body 16 from the container 12, and there is no need to disassemble the valve housing 14 at all. Therefore, disassembly and assembly are facilitated during liquid replenishment, and loss of valve housing related members can be prevented. Cylinder body 1 after liquid replenishment
6 to the container 12 again. Then, the lock is released and the piston body 54 is slid within the cylinder body 16. At this time, the large diameter piston 6 of the piston body 54
0 is reciprocated integrally with the small diameter piston while housing the small diameter piston 61. Air intake hole 6
4, the skirt-shaped seal piece of the piston 60 is deformed, and the air flows into the pressurizing chamber 56, and also flows into the pressurizing chamber 56 through the air suction valves 58 and 59. and pressurization chamber 56
The air inside is pressurized by the reciprocating movement of the large-diameter piston 60, flows into the container via the pressure accumulation valve 42, and is accumulated therein. As the pressure builds up, the high-pressure air within the container 12 acts as a repulsive force on the large diameter piston 60, making the reciprocating motion of the large diameter piston slow. Small diameter piston 61
Needless to say, since the diameter is smaller than that of the large-diameter piston 60, it can slide without being affected much by the high-pressure air within the container 12. Therefore, by locking the large diameter piston 60 to the cylinder body 16 and reciprocating the small diameter piston 61 within the large diameter piston, the container 12
It is possible to store even higher pressure air inside, further promoting high pressure. After that, when the container 12 is placed in the correct position and the push button 28 is lowered into the recess 27, the horizontal hole 21 of the stem is unblocked by the gasket 22, and the liquid pressed by the pressurized air accumulated in the container is released into the pipe 31. The mist rises inside and is continuously discharged as mist to the outside from the flow path 30 through the side hole.

As described above, in the pressure accumulation type sprayer according to the present invention, a valve housing equipped with a spray valve that opens in conjunction with the downward movement of the nozzle and a pipe that leads the liquid in the container to the spray valve is attached to the top of the container. At the bottom of the container, a cylinder body is provided with a piston body that is slidable along the inner peripheral surface and a pressure accumulation valve that allows pressurized air to flow into the container by the sliding of the piston body. It is removably attached and extends inside the container. Since the cylinder body and the valve housing are completely separated from each other in this way, liquid replenishment can be easily done by removing the cylinder body from the container regardless of the valve housing, and the valve housing relationship when replenishing liquid can be easily made. The loss of parts can be prevented. Furthermore, the cylinder body attached to the bottom of the container and extending into the container naturally has a smaller diameter than the container. Therefore, the repulsive force exerted on the piston body in the cylinder body by the pressurized air in the container is not so large, and the piston body can reciprocate even after the pressure in the container has accumulated considerably. Therefore, sufficient pressurized air must be stored in the container.
This makes it possible to spray with sufficiently fine particles.
If necessary, the piston body can be constructed with large and small pistons, and such a construction can further promote higher pressure.

[Brief explanation of the drawing]

1 and 2 are a vertical sectional view and a plan view of a pressure accumulation type sprayer according to the present invention, FIGS. 3A and 3B are longitudinal sectional views showing a modification of the spray valve, and FIG. 5A is a plan view of the pressure accumulation valve, and FIG. 5B is a longitudinal sectional view showing a modification of the pressure accumulation valve. DESCRIPTION OF SYMBOLS 10... Sprayer, 12... Container, 14... Valve housing, 16... Cylinder body, 18... Spray valve, 2
8...Push button, 32...Level rod, 34...Rib, 42...Pressure accumulation valve, 54...Piston body, 58,
59... Air intake valve, 60, 61... Piston, 6
6... Locking means. 〓〓〓〓〓

Claims (1)

[Claims] 1. A container body with an open bottom and a closed top; A spray valve attached to the top of the container body and opened in conjunction with the downward movement of the nozzle; Inside the container body A pipe that guides the stored liquid to a spray valve; A cylindrical cylinder that is detachably attached to the bottom of the container body, closes the bottom of the container body while being attached to the bottom, and extends into the container body. A piston body that is slidably provided along the inner circumferential surface of the cylinder body and has one end taken out outside the cylinder body; A valve mechanism that introduces pressurized air into the container body in response to sliding inside the body; A sealing means that maintains liquid tightness between the container body and the cylinder body; A cylinder body and the piston body. 1. A pressure accumulating type sprayer comprising a locking means for locking the piston body to the cylinder body in a state where the piston body is pushed to the innermost part of the cylinder body. 2. The locking means includes an engagement groove formed in one of the cylinder body and the piston body, and an engagement groove formed in the other,
The pressure accumulation type sprayer according to claim 1, further comprising an engagement protrusion that can be engaged with the engagement groove. 3. The piston body has a large diameter piston and a small diameter piston, each of which is a hollow body each having an air intake valve that allows air to flow into the pressurized chamber defined by the piston body and the cylinder body. The pressure accumulation type sprayer according to claim 1 or 2, wherein the small-diameter piston is slidably disposed within the large-diameter piston. 4. The piston body is constituted by a hollow body having an air intake valve that allows air to flow into a pressurized chamber defined by the piston body and the cylinder body, or The pressure accumulation type sprayer according to item 2.