JPS62258766A - Spray pump - Google Patents

Abstract

PURPOSE:To lighten button pressing operation even when there is a large amount of spray and to reduce the number of other parts to a large extent, by respectively providing separate compression springs to a spray button and a throttle valve. CONSTITUTION:When a spray button 2 is pressed by a finger, said spray button 2 is lowered against compression springs 4, 5 and the liquid in a large diameter cylinder 15 is compressed by the piston 7 of the spray button 2. Because the compressed liquid acts on a check valve 6 so as to push down the same against the compression spring 5 by the pressure thereof, the liquid passage 19 closed at the leading end part of a throttle valve 3 is opened to spray the liquid. As mentioned above, by separately providing the compression spring 5 for the check valve 6 and throttle valve 3 other than the compression spring 4 operating the spray button 2, the adjustment by touch-pressing the spray button 2 becomes easy.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a spray pump, particularly a throttle type spray pump, for spraying internal solutions of cosmetics, medicines, household products, etc.

Conventionally, it is well known that this type of spray pump has a housing provided in two stages with large and small diameters, each of which has a large and small piston that operates in an airtight manner on each inner diameter.

A throttle valve is integrally provided with the small piston, and the tip of the throttle valve closes the liquid passage using spring pressure.

In this way, when the spray button is pressed for 11fls, the pressure of the large piston that is aS with the 9N button is transmitted to the small piston, and works in conjunction with the small piston against the spring pressure to close the liquid passage that was closed by the throttle valve. It is designed to be opened and sprayed.

The opening of such a throttle valve is effective for applications where the spring pressure is relatively weak and the amount of IlQ mist M is small, such as perfumes and colognes. becomes larger, and the frictional resistance of the piston also increases, which inevitably increases the spring pressure.
Benefits) It is known that the force required to actuate a small piston with a small area is excessive, resulting in an inherent drawback that the touch of pressing the spray button becomes very heavy. This means that
This can be easily understood from Pascal's principle.

Therefore, as long as various devices have been devised to reduce the finger pressure, or as long as the spray button and throttle valve are operated by a single spring, not only can no significant improvement be expected, but the number of parts will increase. However, the disadvantage was that it was expensive.

An object of the present invention is to eliminate the drawback of the conventional method in which the touch of the spray button is heavy even when the spray amount is increased by providing separate compression springs for the operation of the spray button and the throttle valve. It is in.

Another object of the present invention is that by providing a plurality of springs, the number of other parts can be significantly reduced, thereby making it possible to reduce costs.

Still another object of the present invention is to reduce the amount of touch required to press the spray button when the amount of spray is the same as in the past.

Next, the present invention will be explained with reference to FIG. 1. The body 1 screwed into the threaded part of the container 9 has a small diameter cylinder 16 and a large diameter cylinder 15 that open upward, and a cylinder 15 that opens from the outside to the inside of the container 9. An air inlet hole 10 and a hook 17 to prevent the spray button 2 from falling off are provided, and a tube 8 extending to the bottom of the container 9 is inserted into the lower part of the small diameter cylinder 16.

The spray button 2 provided at the top of the body 1 includes a nozzle 11 for finely atomizing liquid, a piston 7 extending downward so as to maintain airtightness with the inner wall of the large diameter cylinder 15, and a spray button 2 disposed at the top of the body 1. A hooking portion 18 is provided that airtightly matches the hooking IF portion 17 of No. 1.

Inside the small diameter cylinder 16, a check valve 6 made of a soft material that maintains airtightness with the inner wall of the cylinder 16, and a throttle valve 3 extending upward from the check valve 6 are integrally provided. be.

A compression spring 5 is provided at the bottom of the check valve 6, and its repulsive force closes the liquid passage 19 of the spray button 2 at the upper end of the throttle valve 3. A compression spring 4 is provided on the upper part and the lower surface of the spray button 2 to bias the spray button 2.

When the present invention thus assembled is operated, as shown in FIG. 2, when the spray button 2 is pressed with a finger, the compression spring 4 is released.
．． 5, the liquid in the large diameter cylinder 15 is compressed by the piston 7 of the spray button 2.

Due to its pressure, the compressed liquid acts to push down the check valve 6 against the compression spring 5, and therefore the liquid passage 1, which was closed at the tip of the throttle valve 3, is closed.
9 is opened and sprayed.

The compression spring 5 that biases the throttle valve 3 has the function of a spring 3J for opening and closing the liquid passage 19, and the compression spring 4 is used to operate the spray button 2. .

The reason for this is, as mentioned above, when there is a lot of fog, the area difference between the large diameter cylinder 15 and the small diameter cylinder 16 becomes large, and the force that operates the check valve 6 in the small diameter cylinder 16 becomes large overall. Become.

Secondly, if the pressure of the compression spring 5 is strong, it is difficult to press the spray button 2 with finger pressure.

However, by separately providing the compression spring 5 for the check valve 6 and the throttle valve 3, there is an advantage that the touch of pressing the spray button 2 can be easily adjusted.

After completing 1'Ga, release the finger pressing the r'Q mist button 2, and the repulsive force of the compression spring 4.5 will release the spray button 2.
increases, and the pressure inside the large diameter cylinder 15 is reduced.

Replenishment of liquid into the large diameter cylinder 15, which has been reduced in pressure, is caused by the reduced pressure causing the lip of the reverse IF valve 6, which is made of a soft material, to bend inward away from the inner wall of the small diameter cylinder 16. is replenished through tube 8.

In addition, the pressure reduction inside the container 9 caused by spraying can be prevented by pressing the spray button 2, which prevents the latching part 17 from keeping airtight.
．． 18, so that outside air enters through the gap 20 and further enters the container 9 through the air inlet hole 10.

In this way, the present invention can be used with a lighter pressure touch that is less tiring with fingers than in the past, and even in applications where a relatively large amount of spray is required, there is no need to press and spray many times as in the past, and it can be used easily on parts. Since the number of spray pumps is significantly reduced compared to the conventional one, it is possible to provide a low-cost spray pump with no assembly costs.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of the final IJ1, and FIG. 2 is a longitudinal sectional view showing the operation of the present invention. l...Body 2...Spray button 3...Throttle valve 4.5...Compression spring 6...Check valve 7... ... Piston 8 ... Tube 9 ... Container

Claims (1)

[Claims] A body that includes an air inlet hole, a latching part, and cylinders provided in two stages of large and small diameters and is fitted onto the container; a latching part that prevents the body from falling off; and a latching part that operates in an airtight manner with the inside of the large diameter cylinder. a spray button including a piston that closes the liquid passage of the spray button at all times, but includes a throttle valve that opens when activated, and operates in a gas-tight manner in a small diameter cylinder; A spray pump comprising a plurality of compression springs that bias a valve and the spray button.