JPH07300150A - Foam discharging container - Google Patents

Abstract

PURPOSE:To prevent the blockage of a perforated member in a bubble discharging container which mixes together the liquid in a liquid chamber and the air in an air chamber, passes the resultant mixture through the perforated members to form bubbles and discharges the same in the form of a bubble. CONSTITUTION:A discharging pipe 23 with a push button 37 is provided with a first piston 21 and a second piston 22 is freely movably provided relative to the first piston 21. The discharging pipe 23 is provided in a container body 10 with a freedom of force in and up movement and the first piston 21 and the second piston 22 are located in a liquid chamber 30 and an air chamber 31, respectively, with a freedom of reciprocal movement. In the flow passage A leading from the discharging pipe 23 to a discharging opening 37e of the push button 37 are provided a flow passage 23g for mixing together the liquid from the liquid chamber 30 and the air from the air chamber 31, perforated members 23i and 39b for mixing together the liquid and the air to form bubbles and an opening/closing valve 38 forced open by the bubbles formed through the perforated members 23i and 39b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foam spray container which mixes contents such as hand soap, shampoo, and detergent with air to foam through a porous member and sprays the foam into a small amount.

[0002]

2. Description of the Related Art Conventionally, in a foam ejection container of this type, for example, as shown in FIG. 3, the first piston a is pushed down to increase the pressure in the liquid chamber b by externally operating it by hand. , The second piston c is pushed down to increase the pressure in the air chamber d, the liquid in the liquid chamber b and the air in the air chamber d are mixed in the channel e, and foamed through a porous member f such as a sponge. However, there are some that spout from the spout. Then, after the ejection, the first piston a and the second piston c are returned to suck the contents therein with a negative pressure in the liquid chamber b, and also with a negative pressure in the air chamber d to suck the external air therein. I was there. (See Japanese Utility Model Publication No. 58-23415).

Further, as shown in FIG. 4, for example, the external operation is manually performed to push down the ejection pipe g and push down the first piston a to increase the pressure in the liquid chamber b, and the second piston c.
Is pushed down to increase the pressure in the air chamber d, and the liquid in the liquid chamber b and the air in the air chamber d are introduced into the flow passage e in the ejection pipe g and mixed by the porous member f such as a net material. And spouts as a foam. On the other hand, after the ejection, when the button is released to push up the ejection pipe g, the check ball valve k is opened to introduce the outside air into the air chamber d so that the first piston a and the second piston c are released. There was a thing to restore (Japanese Patent Laid-Open No. Hei 4)
See -293568).

[0004]

However, in such a conventional foam ejection container, since the porous member is constantly exposed to the outside air through the ejection port, the contents remaining in the porous member are dried after use. There was a problem of clogging.

Therefore, an object of the present invention is to prevent clogging of a porous member in a foam ejection container in which a liquid and air are mixed, foamed through a porous member and ejected as a foam.

[0006]

Therefore, the present invention provides
For example, as shown in the illustrated embodiment below, a container body 10 for storing contents, a liquid chamber 30 and an air chamber 31 provided in the container body 10, and a first piston provided reciprocally in the liquid chamber 30. 21, a second piston 22 that is reciprocally movable in the air chamber 31, and the container body 10.
An ejection pipe 23 that is provided so as to project from the first piston 21 and the second piston 22 and that ejects the same.
3 is provided integrally or separately and has an ejection port 37e communicating with the flow path A from the inside of the ejection pipe 23, and when pushing down with a hand, the ejection pipe 23 is pushed into the container body 10 to The first piston 21 and the second piston 22 are pushed down, the check valve 19 of the liquid chamber 30 is closed, the contents in the liquid chamber 30 are pushed out by the first piston 21, and the flow path in the ejection pipe 23 is reached. A push button 37 that guides the air in the air chamber 31 by the second piston 22 and guides it to the flow passage A in the ejection pipe 23, and pushes down the push button 37 provided in the flow passage A. When the flow path A
A porous member 23i / 39b that mixes the contents guided into the inside with air to foam, and an on-off valve 3 that is also provided in the flow path A and is pushed open by the foamed member by the porous member 23i / 39b.
8 and when the released push button 37 is released, the push button 37 is pushed up to return the first piston 21 and the second piston 22 to their original positions, and the open / close valve 38 is closed, while The check valve 19 is opened with a negative pressure in the liquid chamber 30, and the contents in the container body 10 are sucked up therein, and the spring 20 for sucking external air into the air chamber 31 also under a negative pressure. It is characterized by being prepared.

[0007]

When using, the push button 37 is held and pushed down, the ejection pipe 23 is pushed into the container body 10 to push down the first piston 21 and the second piston 22, and the check valve 19 is opened. Close the liquid chamber 3 with the first piston 21.
The contents in 0 are pushed out and guided to the flow path A in the ejection pipe 23, and the air in the air chamber 31 is pushed out by the second piston 22 and guided to the flow passage A in the ejection pipe 23, where the contents and the air are discharged. And are mixed and foamed through the porous members 23i and 39b, so that the open / close valve 38 in the push button 37 is opened and the push button 3 is pressed.
It spouts from the spout 37e of No. 7.

After the ejection, when the user releases the push button 37,
The urging force of the spring 20 causes the first piston 21 and the second piston 21
The piston 22 returns to the original position, pushes out the ejection pipe 23 and pushes up the push button 37, and the on-off valve 38 in the push button 37
On the other hand, the check valve 19 is opened by using the negative pressure in the liquid chamber 30 to suck up the contents in the container body 10 and the external air is also sucked into the air chamber 31 as a negative pressure.

Then, when the push button 37 is again held down and pushed down, the contents in the liquid chamber 30 are pushed out and the air in the air chamber 31 is pushed out and mixed in the ejection pipe 23 before the porous member. 23i · 39b foams, so that the opening / closing valve 38 is opened and the gas is ejected from the ejection port 37e.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a vertical cross-sectional view of a foam ejection container according to an embodiment of the present invention when it is not used. This foam ejection container has a pump 1 at the mouth 10a of the container body 10.
Attach 1 to configure.

The container body 10 has a bottle shape and a mouth portion 10
a) A screw is provided on the outer circumference, and contents (not shown) such as shampoo and hand soap are stored inside.

On the other hand, the pump 11 has a vertically arranged cylinder 15. The cylinder 15 is provided with five step portions 15a, 15b, 15c, 15d, and 5e on the way, and has a diameter gradually decreasing downward. A convex portion 15f is provided on the outer periphery of the upper end portion of the cylinder 15, a flange 15g is provided on the outer periphery of the step portion 15a, and a lateral hole 15h penetrating in the radial direction is provided immediately below the step portion 15b. Cylinder 1
A suction port 15i is provided below the lower part of the unit 5. Inside the cylinder 15, a valve seat 15j having a diameter gradually decreasing downward is provided immediately above the suction port 15i. Then, the upper end of the suction pipe 16 is inserted into the suction port 15i, and the inside of the pipe and the suction port 15i are connected and connected.

A ball-shaped check valve 19 is inserted into the cylinder 15 and placed on the valve seat 15j, and then a spring 20 is inserted and the lower end thereof is placed on the step 15d. Then, the ejection pipe 23 to which the first piston 21 and the second piston 22 are attached is inserted into the cylinder 15.

The first piston 21 is elongated and has an axial hole 21a that opens upward, a valve seat 21b that gradually increases in diameter at its upper end, and a downward opening inside the lower end. The annular recess 21c is formed. Further, a lateral hole 21d is provided between the annular recess 21c and the shaft hole 21a so as to penetrate in the radial direction. The shaft hole 21a and the annular recess 21c are communicated with each other through the lateral hole 21d.

The second piston 22 is made of an elastic material such as a rubber material, and has an outer cylinder portion 22a and an inner cylinder portion 22b.
Are formed concentrically, and the outer cylindrical portion 22a has a slightly long cylindrical shape, while the inner cylindrical portion 22b has a short cylindrical shape with an inverted C-shaped cross section, and a plurality of radial notches 22c are provided at the lower end thereof. The lower end of the inner cylinder portion 22b is connected to the first piston 21.
It is mounted on the intermediate step portion 21h of and is movably provided with respect to the first piston 21 thereof.

The ejection pipe 23 is provided with a flange 23a on the outer periphery of its lower end. The flange 23a has an annular convex portion 23b facing downward and an annular convex portion 23c having a slightly smaller diameter raised from the upper surface and has an upward concave portion 2a formed therein.
3d is formed. Inside the ejection pipe 23, a step 2
3e is provided, the enlarged diameter hole portion 23f is provided in the lower portion, and the flow path 23g is provided in the upper portion. The enlarged diameter hole portion 23f is provided with a vertical groove 23h on its inner peripheral surface. Above the flow path 23g, the flow path 23g
To provide a porous member 23i. The porous member 23i
Is a mesh and is formed integrally with the ejection pipe 23.

Thus, the shaft hole 2 of the first piston 21
The ball valve 25 is inserted into the la 1a, the ball valve 25 is placed on the valve seat 21b, and then the upper end portion of the first piston 21 is press-fitted into the diameter-expanded hole portion 23f of the jet pipe 23 to form the flow passage 23g of the jet pipe 23.
The inside is communicated with the shaft hole 21a of the first piston 21, and the outside of the first piston 21 is communicated with the inside of the flow path 23g through the vertical groove 23h.

Then, the first piston 21 and the second piston 22 are inserted into the cylinder 15, and the cylinder 15
The spring 20 is slidably provided by being pressed against the inner surface of the spring 20, and the upper end of the spring 20 is put in the annular recess 21e and placed on it. Then, the liquid chamber 30 and the air chamber 31 are formed in the cylinder 15, respectively.

A screw cap 34 is attached to the cylinder 15 so that the inner surface of the top of the cylinder 15 has a flange 15g.
Put it on top. Further, the central hole 3 of the screw cap 34
At the upper end of the cylinder 15 protruding through 4a,
The fitting member 35 is covered.

In the fitting member 35, an outer cylinder portion 35a, an inner cylinder portion 35b, and a female screw cylinder portion 35c are formed concentrically and integrally,
An annular recess 35d opening downward is formed between the outer tubular portion 35a and the inner tubular portion 35b, and an engaging recess 35e is provided on the inner periphery of the outer tubular portion 35a. A female screw is provided on the inner circumference of the upper portion of the female screw cylinder portion 35c.

Then, the upper end of the cylinder 15 is fitted into the annular recess 35d, and the projection 15f of the cylinder 15 is hooked on the engaging recess 35e to prevent the fitting member 35 from coming off and to fit it. The screw cap 34 is held between the member 35 and the flange 15g.

On the other hand, the upward recess 23d of the jet pipe 23
The female screw cylinder portion 35c is fitted into the inside thereof, the lower end thereof is abutted, the ejection pipe 23 is pushed down, the spring 20 is slightly compressed, and the intermediate step portion 21h of the first piston 21 is moved by the urging force. It is pressed against the lower end of the inner cylindrical portion 22b of 22.

At this time, the upper end portion of the ejection pipe 23 is projected upward through the female screw cylinder portion 35c, and a separate push button 37 is attached to the upper end.

The push button 37 has a cap-shaped outer portion 3
A beak-shaped nozzle cylinder portion 37b is provided on the outer periphery of 7a, while a male screw cylinder portion 37c is provided in the center of the inside.
The nozzle cylinder portion 37b and the nozzle cylinder portion 37b are connected by a horizontally long cylinder portion 37d to connect the inside of the nozzle cylinder portion 37b and the inside of the male screw cylinder portion 37c. A ball-shaped on-off valve 38 and a short cylindrical member 39 are provided in the male threaded cylinder portion 37c. The short cylindrical member 39 has a valve seat 39a at the upper end and a porous member 39b inside. The porous member 39b has a mesh shape and is formed integrally with the cylindrical member 39 in the radial direction. Then, after inserting the on-off valve 38 into the male threaded cylinder portion 37c, the short cylindrical member 39 is press-fitted to the valve seat 39a.
The on-off valve 38 is mounted on. Then, the upper end portion of the ejection pipe 23 is press-fitted into the male screw cylinder portion 37c, and the flow passage 37f in the push button 37 and the flow passage 23g in the ejection pipe 23 are connected to each other to form a flow passage A. .

As shown in the figure, the pump 11 is mounted by screwing the screw cap 34 on the outer periphery of the mouth 10a of the container body 10 to accommodate the cylinder 15 and the suction pipe 16 in the container body 10. To do.

Therefore, when using the foam jetting container,
The push button 37 is pushed down against the spring 20 to push the ejection pipe 23 into the container body 10 as shown in FIG.
Then, by pushing the ejection pipe 23, the first piston 21
, And the check valve 19 is closed to increase the liquid pressure in the liquid chamber 30. Then, as the hydraulic pressure 30 increases, the ball valve 25
Is opened, and the liquid in the liquid chamber 30 is guided to the flow path 23g in the ejection pipe 23 through the shaft hole 21a.

When the ejection pipe 23 is pushed in, the flange 23a of the ejection pipe 23 is inserted from the lower end of the female screw cylindrical portion 35c.
And the outside is communicated with the inside of the upper part of the cylinder 15 through the space between the female screw tubular portion 35c and the ejection pipe 23, while the lower end of the ejection pipe 23 and the annular convex portion 23b are abutted against the second piston 22 and the inside of the air chamber 31 The communication with the upper part of the cylinder 15 is cut off. Then, by pushing the ejection pipe 23, the second piston is pushed down to increase the pressure in the air chamber 31, and the air is passed through the vertical groove 23h and the flow passage 23 in the ejection pipe 23.
lead to g.

In this way, the liquid and air are mixed in the flow path 23g and bubbled through the porous members 23i and 39b in order, so that the on-off valve 38 is opened and jetted from the jet port 37e.

When the release button 37 is released after the ejection, the ejection tube 23 is pushed up by the urging force of the spring 20, and
The piston and the second piston return to the original position shown in FIG. At that time, the opening / closing valve 38 is closed to shut off the flow path A to prevent contact between the contents remaining in the porous members 23i and 39b and the outside air.

When returning, the ball valve 25 is closed,
The communication between the liquid chamber 30 and the flow path 23g in the ejection pipe 13 is cut off. When the pressure inside the liquid chamber 30 is made negative by pushing up the ejection pipe 13, the check valve 19 is opened to open the container body 10.
The liquid inside is sucked up into the liquid chamber 30.

When returning further, the lower end of the ejection pipe 23 and the annular convex portion 23b are separated from the second piston, and the air chamber 3
The inside of 1 and the inside of the upper portion of the cylinder 15 communicate with each other. Then, when the inside of the air chamber 31 has a negative pressure by pushing up the ejection pipe 23, the outside air is sucked into the air chamber 31 through the upper portion of the cylinder 15 and the notch 22c.

Then, when the push button 37 is again pressed and pushed down, the contents in the liquid chamber 30 are pushed out and the air in the air chamber 31 is pushed out, and mixed in the flow passage 23g in the ejection pipe 23. Foaming is performed by the porous members 23i and 39b, so that the on-off valve 38 is opened and ejected from the ejection port 37e.

[0033]

As described above, according to the present invention, when the user presses the push-button and pushes it down during use, the contents in the liquid chamber are pushed out and the air in the air chamber is pushed out, so that the inside of the ejection pipe can be pushed out. After mixing, foam with the porous member, open the on-off valve with the foaming agent and eject it from the ejection port,
After using it, when you release your hand from the push button, the first piston and the second piston return to their original positions by the biasing force of the spring, push out the ejection pipe and push the push button up, and close the on-off valve inside the push button. Therefore, it is possible to prevent contact between the contents remaining on the porous member and the outside air, prevent drying, and prevent clogging of the porous member.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a foam jetting container according to an embodiment of the present invention when not in use.

FIG. 2 is a state diagram in which the ejection pipe is pushed in during its use.

FIG. 3 is a vertical cross-sectional view of a conventional foam ejection container when it is not used.

FIG. 4 is a vertical cross-sectional view of another conventional foam ejection container when not in use.

[Explanation of symbols]

 10 Container Main Body 19 Check Valve 20 Spring 21 First Piston 22 Second Piston 23 Ejection Pipe 23g Ejection Pipe Flow Path 23i / 39b Porous Member 30 Liquid Chamber 31 Air Chamber 37 Press Button 37e Jet Outlet 38 Open / close Valve A Flow Channel

Claims (1)

[Claims] 1. A container body for storing contents, a liquid chamber and an air chamber provided in the container body, a first piston reciprocally movable in the liquid chamber, and a reciprocating motion in the air chamber. A second piston, an ejection pipe provided so as to project from the container body and moving the first piston and the second piston, and the ejection pipe provided integrally or separately and communicating with a flow path from the inside of the ejection pipe. The first piston has an ejection port, and when the hand is pushed down, the ejection pipe is pushed into the container body to push down the first piston and the second piston, and the check valve of the liquid chamber is closed to close the first piston. A push button that pushes out the contents in the liquid chamber to guide the flow passage in the ejection pipe, and pushes out the air in the air chamber with the second piston to guide the flow passage in the ejection pipe; A porous member that mixes air with the contents guided into the flow path when the push button is pressed down, and an on-off valve that is also provided in the flow path and opens with the foamed material of the porous member When the hand is released from the pushed down push button, the push button is pushed up to return the first piston and the second piston to their original positions, and the on-off valve is closed while the negative pressure is applied in the liquid chamber. A foam jetting container comprising a check valve opened, a spring sucking up the contents in the container body therein, and sucking external air into the air chamber as a negative pressure.