JPS6024426Y2 - foam spray - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a foam spray used for spraying a foaming liquid such as shaving cream into foam.

Many types of sprays have been used in the past, but most of them have a liquid chamber and an air chamber in the same chamber, and the space above the liquid surface in the liquid chamber is used as the air chamber. It has been difficult to maintain a sufficient mixing balance between liquid and air to promote foaming, and therefore it has been difficult to achieve satisfactory foaming.

Therefore, the present invention solves the above-mentioned difficulties, and the drawings showing the embodiments of the present invention will be described in detail below. Reference numeral 1 indicates a container body having a neck portion 2.

The cylinder 4 is vertically disposed within the container by engaging the top surface of the container with an outward flange attached to the upper end of the peripheral wall.

The cylinder has a bottom wall, and a suction tube 11 with a suction valve 10 is suspended from a side part of the bottom wall downward into the container body.

The suction valve has a cylindrical part 9 with a small diameter part 8 at the lower part thereof, which is vertically disposed by opening a hole 7 into the soil surface of the bottom wall, and fitting the upper end of the vibrator 12 into the small diameter part. It is formed by placing a ball valve in the portion 9.

In addition, a through hole 24 is bored in the upper part of the cylinder peripheral wall,
Further, an elastic member having an outward flange 25' protruding from the upper end of the short circumferential wall 25 is attached to the cylinder circumferential wall 4', and the flange 25'
is brought into contact with the lower surface of the outward flange of the cylinder, and the short circumferential wall 25 closes the through hole 24 and is fitted.

This through hole 24 and a short circumferential wall portion that closes the through hole form a negative pressure prevention valve 26 that allows air to enter the container from inside the cylinder when the inside of the container becomes negative pressure. It is.

A piston part 13 is fitted into the cylinder so as to be movable up and down, and a discharge pipe 14 is erected from the piston part.
A nozzle is attached horizontally to the upper end of the discharge pipe.

The vertically movable member is violently affected by these piston portion, discharge portion, and nozzle.

It is best to make the lower part of the piston part have a small outer diameter.

The tube hole of the discharge pipe is divided into sections in the vertical direction, which will be described later.

A mouth portion 23 attached to the upper end of the elastic bellows tube whose lower end surface is closed is airtightly fitted onto the lower surface of the piston.

The bellows tube is interposed between the piston part and the bottom wall of the cylinder, and its elasticity urges the vertically moving member upward. When the piston part descends, it is compressed against the elasticity, causing the vertically moving member to move upward. When the member is pushed down and released, it is restored and the vertically movable member is pushed up.

The cap 3 is provided by fitting a peripheral wall extending vertically from the periphery of the top wall onto the outer surface of the neck of the container body.

A through hole 15 is provided in the center of the top wall, and a discharge pipe is passed through the through hole so as to be vertically movable with the nozzle facing outward.

The piston part whose upper surface is in contact with the back surface of the top wall of the cap is prevented from being pulled out.

The pipe hole of the discharge pipe mentioned above is divided into parts in the vertical direction, and the lower end of the pipe hole 17 on one side is inside the cylinder, and the lower end of the pipe hole 17 on the other side is
The lower ends of 8 are communicated with the inside of the bellows cylinder a, the upper end of the tube hole 17 is communicated with the discharge valve 20, and the upper end of the tube hole 18 is directly connected with the base end of the nozzle hole 16.

Further, a breathable foam member 19 is fitted inside the nozzle hole.

In the above configuration, when the vertically moving member is moved up and down several times,
The liquid inside the container enters the cylinder.

When the vertically movable member is pressed down from this state, the liquid in the cylinder passes through the discharge valve 20 into the nozzle hole, and the air in the bellows cylinder also enters the nozzle hole, passes through the foamable member, and is ejected.

During the passage, the liquid and air are mixed and are ejected as countless bubbles.

When the vertically movable member is released, the compressed bellows tube is elastically restored and pushed up until the piston portion contacts the top wall of the cap.

At this time, since the inside of the bellows tube becomes negative pressure, outside air enters the bellows tube through the nozzle hole and the other tube hole 18.

As the liquid decreases, the inside of the container becomes negative pressure, but when the piston part descends, outside air enters the inside of the container through the through hole 15 in the top wall of the cap, inside the upper part of the piston part of the cylinder, and through the negative pressure prevention valve 26. This prevents the pressure from becoming negative.

However, this valve is not always necessary, and since there are some gaps between the liquid inside the container and the circumferential wall of the cap, and between the liquid inside the container and the outward flange of the cylinder, the outside air from the outside air can be removed from the gap. It is generally practiced to prevent negative pressure inside the container by supplying it.

Since this proposal has the above configuration, it is possible to ensure the mixing of liquid and air, and how to determine the amount of air and the amount of liquid by determining the respective sizes and ratios of the cylinder space and the bellows internal space. It is convenient to be able to freely determine the amount of foam to be ejected and the size of the foam, etc., and since the elastic bellows tube also serves as a spring for pushing up the vertically movable member, no spring is required.

[Brief explanation of the drawing]

Figure 1 is a side vertical sectional view of the foam spray according to the present invention, Figure 2
The figure is an enlarged sectional view of the negative pressure prevention valve of the same sprayer. 1...Container body, 3...Cap, 4.
...Cylinder, 14...Discharge pipe, 16.
...Nozzle hole, 20...Discharge valve, 21.
...Accordion tube.

Claims (1)

[Scope of utility model registration request] A container body 1 with a neck and a neck, a cylinder 4 with a closed bottom end vertically installed inside the container body by engaging an outward flange attached to the upper end of the peripheral wall with the top surface of the container, and a cylinder 4 whose lower end face is closed from a part of the bottom wall of the cylinder. A suction cylinder 11 with a suction valve installed vertically downward in the body, a discharge pipe 14 erected from a piston part 13 fitted into the cylinder so as to be able to move up and down, and a nozzle attached to the upper end of the discharge pipe. a movable member, and an elastic bellows cylinder 21 whose lower end face is closed, which is interposed between the piston portion and the bottom wall of the cylinder by fitting the upper end onto the lower surface of the piston and urging the vertically movable member upward. and a cap 3 in which a circumferential wall hanging down from the periphery of the top wall through which the discharge pipe 14 is slidably passed is fitted onto the outer surface of the neck of the container body with the nozzle positioned outward. The pipe hole of the discharge pipe is vertically divided, and the lower end of the pipe hole 17 is connected to the inside of the cylinder, and the lower end of the pipe hole 17 is connected to the inside of the cylinder.
The lower end of the tube hole 17 communicates with the inside of the elastic bellows cylinder, the upper end of the tube hole 17 communicates with the inside of the nozzle hole base through the discharge valve 20, and the upper end of the tube hole 18 directly communicates with the inside of the nozzle hole base. A foam spray in which a certain foam member 19 is fitted.