JPS5824183B2 - Chikuatsufunmusouchi - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is characterized by the repeated movement of a piston and the action of a spring.
This invention relates to a pressure-accumulating spray device that accumulates the pressure of a liquid material in advance and then presses a spray button to spray the liquid material after the pressure has been accumulated.

Liquid substances, such as hair spray, insecticides, deodorants, etc.1
A known manual pressure accumulating spray device that can be used in a relatively large number of times and is suitable for continuous spraying uses compressed air or a spring member as a driving source.

Known manual pressure accumulating spray devices using compressed air as a driving source use compressed air generation pumps to pressurize compressed air into a container before spraying, so they require a container that can withstand internal pressure, and in practice leads to an increase in manufacturing costs.

Furthermore, the compressibility of air is poor at maintaining internal pressure, which requires frequent injection operations to inject compressed air to maintain internal pressure, especially when the space inside the container expands due to a decrease in internal volume in large containers.

In addition, a known pressure-accumulating spray device that uses the pressure of a spring member as a driving source, which accumulates pressure of a liquid with a spring member and then sprays it by pressing a spray button, has a large amount of accumulated spray and a pressure-accumulating chamber. When the cross-sectional area of the spring member is small, the increase and decrease in pressure due to expansion and contraction of the spring member is significant, and therefore the spray pattern is greatly influenced by pressure fluctuations.

In order to reduce pressure fluctuations due to expansion and contraction of the spring member,
In order not to reduce the amount of pressure-accumulating spray, it is desirable to increase the cross-sectional area of the pressure accumulator and reduce the elasticity of the spring member.However, on the other hand, since pressure per unit area is required, the cross-sectional area of the pressure accumulator is Proportionally greater spring pressure is required.

In particular, spraying of insecticides, deodorants, etc. requires a fine mist that can remain suspended in space for a long time in order to increase the efficacy of the chemicals. It is necessary to spray under high pressure to help.

However, such a pressure-accumulating spray device in which the spring member has a strong repulsive force requires a large external operating force on the user's side to compress the spring member in advance, which is difficult for users with relatively weak strength such as children and women. The burden will be greater.

Furthermore, this type of known pressure accumulating spray device has a complicated structure, so the cost of molds such as plastic molding for making component parts, material costs, and assembly costs are relatively high, which actually increases manufacturing costs. linked.

The present invention provides a manual pressure accumulation spray device using the pressure of the spring member as a driving source, which can accumulate pressure with a weak external operating force even if a pressure accumulation spring member with a strong repulsive force is used. As a result, the present invention relates to a pressure accumulation spray device that can produce fine mist by high-pressure spraying and further increase the cross-sectional area of the pressure accumulation chamber to minimize pressure fluctuations caused by expansion and contraction of the spring member.

A first object of the present invention is to provide a pressure-accumulating spray device that can obtain a pressure-accumulating spray liquid increased to a high pressure even with a weak external pressure-accumulating operating force.

The second object of the present invention is to make it possible to obtain a predetermined accumulated pressure even if the cross-sectional area of the pressure accumulation chamber is increased, to minimize pressure fluctuations due to expansion and contraction of the spring member, and to achieve a uniform spray pattern until the end of spraying. An object of the present invention is to provide a pressure accumulation spray device that can obtain the following.

A third object of the present invention is to provide a reliable and inexpensive pressure accumulation spray device that has a simple structure and is less likely to fail.

Further advantages of the invention will become apparent from the following description.

In the embodiment shown in FIGS. 1-4, the pressure accumulator spray device of the present invention (FIG. 1) is mounted in an airtight manner by any known method into the opening of a container 6 that can be held in one hand.

The structure of the pressure accumulation spray device of the present invention can be roughly divided into a cylinder body 3 that fits into the opening of the container 6, and a cylinder body 3 that is incorporated into the cylinder body 3 and sucks the liquid in the container 6 into the body 3 by reciprocating motion. a piston 10 that raises the body 3; compression springs 13 and 14 that store the liquid in the body 3 under pressure via the piston 7; and an operating cylinder 1 that is fitted over the top of the body 3 and causes the piston 10 to reciprocate. and a spray button 11 disposed at the top of the operating cylinder 1.

First, the cylinder body 3 has a small diameter cylinder 30 connected to the lower part of the body 3, and the liquid suction pipe 4 is fitted into the lower end of the cylinder 30.

The body 3 has a flange 29 provided around the outer periphery of the upper end of the body 3 fixed to the inner peripheral surface of the cap 2, and is further screwed into engagement with the cap 2 so as to overlap the upper end surface of the opening of the container 6.

A piston rod 8 is installed in the cylinder body 3, which freely passes through the cap 2 along the vertical axis and whose lower end fits into the cap 2.

A piston 10 whose outer periphery slides elastically against the inner circumferential wall of the cylinder 30 is fixed to the lower end of the piston rod 8 that fits into the small diameter cylinder 30 so as to move together with the piston rod 8.

The piston 10 separates from the inner circumferential wall of the cylinder 30 when descending, allowing the liquid to pass freely, and when ascending, the piston 10 separates from the inner circumferential wall of the cylinder 30.
The piston 10 is in close contact with the inner circumferential wall of the piston 10, and acts like a check valve to prevent backflow of the passing liquid.The piston 10 is made of rubber or a soft synthetic resin material.

In the part of the piston rod 8 that penetrates inside the cylinder body 3,
A piston 7 whose outer circumference slides in airtight contact with the inner circumferential wall of the body 3 and whose inner circumference slides airtightly onto the outer circumferential surface of a piston rod 8 is installed so as to be vertically movable.

A portion of the piston rod 8 located inside the cylinder body 3,
A spring seat 22 fixed integrally or separately is installed at a position above the piston 7, and this spring seat 22
and the piston 7, the piston rod 8 is fitted onto the piston rod 8, and the rod 8
A spring 14 that applies upward elasticity to the spring 1 is contracted, and the spring 1
A large-diameter spring 13 is contracted between the cap 2 and the piston 7 on the outside of the piston 4 to constantly apply downward elasticity to the piston 7.

When performing pressure accumulation and spraying operation, both the springs 13 and 1
4, the piston 7 reaches the lower limit position where it abuts against the step wall 28 of the large-diameter cylinder body 3 and the small-diameter cylinder 30, and the piston rod 8 comes into contact with the spring seat 22 against the cap 2. The piston 10 at the lower end is located at the upper part of the small diameter piston 30 at the upper limit position where it is prevented from coming off.

Furthermore, a check valve 9 is incorporated which allows the liquid to pass from the pipe 4 into the small diameter cylinder 30 but prevents it from passing in the opposite direction. When the cylinder 30 moves up and down, the liquid is suctioned and compressed into the cylinder 30.
The inner lower chamber becomes a suction compression chamber 19, and the lower chamber of the large diameter cylinder body 3 communicating with this from the inner upper chamber of the cylinder 30 becomes a pressure accumulation chamber 20 operated by compression springs 13 and 14 via the piston 7. becomes.

A through hole 21 is provided in the middle of the peripheral wall of the cylinder body 3 to allow communication between the inside of the body 3 and the inside of the container 6, through which liquid is fed into the pressure accumulation chamber 20 and the piston 7 rises against the springs 13 and 14. When the piston 7 moves upward from the through hole 21, the excess liquid in the pressure accumulating chamber 20 is returned to the container 6 through the through hole 21. Therefore, even if the pressure accumulating operation is performed more than necessary, the pressure accumulating chamber 20 Since the liquid is always in a fixed amount and the piston 7 does not rise above the through hole 21, the springs 13 and 14 are in a constant compression state, and the liquid is always in a constant pressure accumulation state.

The operating barrel 1 is made of a hard material such as synthetic resin, and the cap 2 is made of hard material such as synthetic resin.
The operation cylinder 1 and the piston rod are formed into a cylindrical shape with an inner diameter that can be loosely fitted into the cylinder, and a partition wall 27 is formed in the middle of the inside, and the central part of the partition wall 27 is fitted and fixed to the upper part of the piston rod 8. 8 is integrated, and the pressure accumulating operation is performed by grasping the operation tube 1 by hand and moving it up and down.

A piston rod 8 protrudes upward from the partition wall 27 of the operation tube 1
A spray button 11, which fits into the upper cavity of the operating barrel 1, is attached to the upper end of the operating barrel 1.

The piston rod 8 is provided with a passage 17 that is closed at both upper and lower ends along the axis, and a horizontal hole 18 is provided at the lower end of the piston rod 8 so that the passage 17 is always communicated with the pressure accumulating chamber 20.

An annular groove 25 and an orifice 16 communicating with the passage 17 are formed on the outer peripheral surface of the upper end of the piston rod 8 into which the spray button 11 is fitted. The elastic valve body 15 fits to close the orifice 16, and when the outer circumference is deformed by being pushed downward, the inner circumferential surface is released from the bottom surface of the groove 25 to open the orifice.
Attach.

Of course, the valve body 15 may be replaced with other known spray valves.

The outer periphery of the valve body 15 is fixed to a stepped hole of a spray button 11 that loosely fits into the piston rod 8, and the valve body 15 is deformed by pressing down the spray button 11. is equipped with a spray nozzle 5 and provided with a through hole 26 for communicating the spray hole of the nozzle 5 with the orifice 16.

The spray button 11 normally moves to the raised position due to the return elasticity of the valve body 15, and the orifice 16 is closed by the valve body 15, so that no spray of the liquid material under pressure accumulation is generated.

Further, only when the spray button 11 is pressed down against the elasticity of the valve body 15, the orifice 16 is opened due to the deformation of the valve body 15, resulting in a spray action.

The pressure accumulating spray device shown in the embodiment of the present invention has the structure as described above. Next, when the pressure accumulating spray device is used to accumulate the pressure of the liquid in the container 6, the procedure is as follows.

When pressure accumulation and spraying are not performed, the piston 7 is at the lower limit position by the springs 13 and 14, and the piston rod 8 is at the upper limit position, so that the valve body 15 closes the orifice 16.
It will be in the state shown in the figure.

Next, in the above state, the operating barrel 1 is grasped with a hand or the like, and while being held, the operating barrel 1 is moved up and down.

When the operation cylinder 1 is pushed down, the piston rod 8 integrated with it also moves down, and the piston 10 at the lower end compresses the liquid in the suction compression chamber 19, and the state of the compressed liquid in the chamber 19 changes. , the outer periphery of the piston 10 is pushed open and flows into the lower pressure storage chamber 20, and this liquid also flows into the springs 13 and 14.
The piston 7 is pushed up against the

Next, when the operation cylinder 1 is raised following the depression, the piston 10 rises in the suction compression chamber 19, and this chamber 19 becomes negative pressure, so the check valve 9 opens and the container is passed through the pipe 4. The liquid inside will be sucked up.

As the piston 10 rises, the outer periphery of the piston 10 comes into close contact with the inner wall of the suction compression chamber 19 due to self-return and the pressure of the pressure accumulation chamber 20, and the liquid in the pressure accumulation chamber 20 is pushed up, and the spring 13
and 14 to further raise the piston 7,
The pressure accumulation operation by moving the operation tube 1 up and down is the state shown in FIG.

When a liquid is sent into the pressure storage chamber 20 by the vertical movement of the piston 10, the liquid also flows into the passage 17 of the piston rod 8 through the horizontal hole 18, and the liquid state is changed to the spring state through the piston 7. Due to the action of 13 and 14, the pressure is increased and the pressure is accumulated.

In this case, the suction compression chamber 19 has a smaller cross-sectional area than the pressure accumulation chamber 20, and therefore the hydraulic pressure applied to the piston 10 when pushing down the piston rod 8 is small, so that it can be operated even with a weak operating force. I can do it.

On the other hand, since the cross-sectional area of the pressure accumulation chamber 20 is large, the liquid compressed in the suction compression chamber 19 is directly transmitted to the piston T of the pressure accumulation chamber 20 and expanded hydrodynamically, so it has strong elasticity. The springs 13, 14 also allow the piston 7 to rise against the springs.

In particular, it can be easily imagined from "Pascal's principle" that the greater the difference in cross-sectional area between the pistons 10 and 7, the greater the pressure difference applied to the respective pistons 10 and 1.

In addition, in order to easily move the piston rod 8 up and down, the spring 14 has relatively weak elasticity.
On the other hand, it is desirable to use a spring 13 with strong elasticity for pressure accumulation.

In addition, for those that do not require so much accumulated pressure, the spring 13
may be omitted.

As the pressure builds up and the piston 7 rises above the through hole 21,
Since the pressure accumulating chamber 20 and the through hole 21 communicate with each other and the liquid flows out into the container 6, the piston 7 does not rise above the through hole 21 even though the pressure accumulating operation continues. and constant pressure.

When the pressure accumulation is completed, the grip on the operating cylinder 1 is released, and the piston rod 8 returns to the upper limit position, as shown in FIG. 4.

In this state, the spray button 11 is pressed down, and as shown in FIG. Due to the communication, the liquid state under the accumulated pressure is sprayed.

When the spraying is finished, the state returns to the state shown in FIG. 2 and prepares for the next pressure accumulation and spraying.

As the spraying continues, the amount of liquid in the container 6 naturally decreases, and the pressure in the container 6 is reduced by that amount.

This reduced pressure makes it difficult to replenish the liquid into the suction compression chamber 19, so it is necessary to replenish air from the outside.
According to the present invention, when the piston rod 8 is pushed down as shown in FIG.
This allows air to be replenished into the container 6 through the opening.

The present invention is as described above, and it is possible to obtain a highly pressurized spray liquid even with a weak pressure accumulating operation force, and it is a low-cost pressure accumulator that has little pressure fluctuation due to fine mist and spring expansion and contraction, and can be refilled with the undiluted solution. Because we can provide spraying equipment, we can especially use sprays for household and commercial purposes that require a stable spray pattern and fine mist, especially those that require a large amount of spray per time or a high frequency of use, such as hair spray, insecticides, etc. Effective for household goods, industrial goods, automobile goods, pharmaceuticals, etc.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the present invention, FIG. 2 is a vertical cross-sectional view of an embodiment of the present invention, FIG. 3 is a vertical cross-sectional view showing the pressure accumulating operation of the present invention, and FIG.
The figure is a longitudinal sectional view showing the spraying operation of the present invention. 1... Operation barrel, 2... Cap, 3.
...Cylinder body, 4...Pipe, 5
... Nozzle, 6... Container, 7...
...Piston, 8...Piston rod, 9...
...Check valve, 10... Piston, 11...
...Spray buttons 13, 14... Spring, 15...
...Valve body.

Claims (1)

[Claims] 1. It is equipped with two cylinder chambers that communicate with each other, one pipe that communicates with the cylinder and whose lower end faces the lower part of the container, and a check valve that only allows liquid to pass from the pipe to the cylinder chamber, and the container can be installed in such a way as to A piston rod is fitted across both cylinder chambers of the cylinder body and is arranged to be able to be raised and lowered from the outside, and a piston rod is fixed to the piston rod and fitted into one cylinder chamber and moved up and down to move liquid into the other cylinder. A piston that is press-fitted into the chamber, and a piston that slides airtightly between the piston rod in the cylinder chamber and is pushed up by the press-fit liquid, and this piston is given downward elasticity to accumulate pressure of the press-fit liquid. A spring, a passage provided along the axis of the piston rod so that the pressurized liquid flows out, a spray button attached to the upper end of the piston rod, and a spray button installed between the spray button and the piston rod to press the spray button. A pressure accumulating spray device comprising a valve that communicates a passage with a nozzle to perform spraying.