JPH0733894Y2 - Foam dispenser - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial Application" The present invention relates to a manually operated foam dispenser.

"Prior Art" Various types of foam dispensers have been conventionally provided, but as is well known in the basic form, in a so-called trigger type liquid ejector, a mesh or a cylinder is attached to the nozzle cap at the tip of the injection cylinder. A foam-forming part is installed, and the injection liquid ejected from the injection cylinder is foamed in this foam-forming part.

That is, it has a trigger that is pulled by a finger, a pump chamber in which a piston integrated with the trigger is inserted, the injection cylinder, and main parts such as a nozzle cap, and the trigger is operated several times to transfer liquid from the container to the pump chamber. Suction is performed, and in this state, the trigger is pulled to increase the pressure of the liquid in the pump chamber via the piston, and the discharge valve is opened by this high pressure liquid, and the high pressure liquid is ejected in the form of foam from the nozzle cap through the injection cylinder.

"Problems to be solved by the device" According to the above-mentioned manual type foam dispenser, it is clean from the viewpoint of environmental hygiene because it does not use CFC gas etc. However, this type of manual type has the trigger and piston moving parts inside the pump chamber. It is a system that pushes outward with a return spring that has been pulled, and pulls the movable part against this return spring at the time of foam ejection, and therefore requires a suitable pulling operation force,
Moreover, since it is not a method of storing in the form of bubbles, it is necessary to repeat the operation several times if the required amount is not reached.

SUMMARY OF THE INVENTION The present invention provides a foam dispenser which does not require a return spring in the related art and therefore requires only a small operating force and is capable of continuous foam ejection.

"Means for Solving the Problem" The foam dispenser of the present invention is a container body 1, a mesh-shaped foam-making portion 5 and a suction valve 6 immediately below the foam-forming portion 5 provided in the bottom opening provided inside the container body 1. A suction pipe 7 that hangs downward is communicatively connected, an air hole 8 that communicates with an inner space of the container body 1 is opened, and a cylindrical piston 9 is fitted in the container body 1 so that it can slide up and down. A cylinder 2 which is a bubble storage chamber hung vertically from the section, a lower end of which is connected to the cylindrical piston 9 so as to communicate therewith and which is projected upward and outward, and a stem 3 provided with an aerosol valve 10 on the upper side, and a bubble is discharged to one side. Open the hole 11 to open the aerosol valve.
The operation button 4 is connected to the upper end of the stem 3 via 10 so as to be pushed down.

"Operation" In the above description, the liquid is stored in the container body 1 to a level where the air hole 8 at the bottom opening of the cylinder 2 is not blocked, and the movable parts of the cylindrical piston 9, the stem 3 and the operation button 4 are always the cylinder 2 It is pushed down to the lower limit position.

Here, when foaming, the movable portion is pulled upward via the operation button 4. Then, the inside of the cylinder 2 becomes negative pressure, so that the suction valve 6 is opened, whereby the liquid is sucked through the suction pipe 7,
Further, the air in the upper empty space in the container body 1 is simultaneously sucked through the air holes 8, and this liquid and air are sucked up into the cylinder 2 through the mesh-shaped foaming portion 5. At this time, the liquid and the air are mixed and foamed in the foaming section 5, and are stored in the cylinder 2 in a foamed state. Then, when the operation button 4 is pushed downward, the bubbles in the cylinder 2 are pressurized and the aerosol valve 10 is opened. Therefore, the bubbles in the cylinder 2 are opened while the aerosol valve 10 is opened. Is spouted from the outside.

[Embodiment] The foam dispenser of the present invention comprises a container body 1, a cylinder 2 serving as a foam storage chamber,
It is composed of the main members of the stem 3 and the operation button 4.

The container body 1 has a relatively large diameter mouth / neck portion 12 on the upper part thereof, and a thread is formed on the outer surface of the mouth / neck portion 12. The mouth / neck portion 12 is provided with a large opening at the center of the top wall for mounting. Screw cap 13
Is screwed on.

The cylinder 2, which serves as a foam storage chamber, is vertically installed in the upper part of the container body 1 by fitting and fixing an upper opening portion in a vertical ring 14 vertically extending from the rear surface of the peripheral portion of the top wall of the screw cap 13. This cylinder 2 has a straight cylindrical body with an intake hole 15 formed on one side of the intermediate portion, and a foaming portion 5 is formed by opening the central portion of the bottom in a mesh shape. The connecting tube 16 is hung down, and the connecting tube 16 is connected to the suction pipe 7 reaching the inner bottom of the container body 1, and the air hole 8 is opened. A bottom member 17 on which a plate valve 6 having a tongue valve body is installed is internally fixed, and a cylindrical piston 9 is vertically slidably fitted in a straight cylindrical body.

The cylindrical piston 9 has a small-diameter communication pipe 18 penetrating from the center of the bottom plate of the cup-shaped body, and skirt-shaped elastic peripheral walls provided at the upper and lower ends of the peripheral wall. The elastic peripheral wall is pressed against the straight cylindrical body. It is fitted inside.

In addition, in this cylinder 2, a groove 19 is provided on one side of the inner surface above the intake hole 15 of the body portion, and outside air is sucked into the container body 1 through the groove 19 and the intake hole 15 and the negative air inside the container body 1 is discharged. Prevents pressure. Also, if necessary, the foam-forming part 5 at the bottom opening
A finer mesh body may be placed on the upper surface.
The amount of stored liquid can be increased by connecting an intake pipe that is bent to the air hole 8 and rises upward to connect the air intake port to the upper part of the container body 1.

In the stem 3, a valve mounting cylinder 20 extending upward is externally fitted and fixed to an upper half reduced diameter portion of an outer cylinder having a slightly reduced diameter in an upper half portion, and a small diameter inner cylinder 21 branched from an inner surface of an upper portion of the outer cylinder. In a shape that hangs downward, the lower half of the outer cylinder is fitted and fixed to the peripheral wall of the cylindrical piston 9, and the inner cylinder 21 is externally fitted and fixed to the communication pipe 18 so as to be communicatively coupled to the cylindrical piston 9. is there.

The aerosol valve 10 mounted on the valve mounting cylinder 20 is provided with an inward flange-shaped valve seat 22 on the upper part of the valve mounting cylinder 20, and elastic plates 23 such as donut-shaped rubbers on the upper and lower surfaces of the valve seat 22. 24 is arranged, and the cylindrical valve body 26 with the lower surface is pushed down so that the hole 25 formed on one side in the central hole of the valve seat 22 and the elastic plates 23, 24 is always closed by the valve seat 22. It was inserted as much as possible.

That is, when the tubular valve element 26 is pushed down from the open state shown in the drawing, the hole 25 is disengaged from the valve seat 22 and the elastic plates 23, 24 for sealing, and the tubular valve element 26 is pushed down while being pushed down. Communicates with the stem 3 through the hole 25 in the cylinder 2. This aerosol valve 10
May have other structures as long as they serve the same purpose.

The operation button 4 is bent upward from the joint pipe 27 on the lower surface to open the bubble outlet hole 11 which is pulled out to one side, and the joint pipe 27 is connected to the cylindrical valve body 26 to be connected to the top. The guide peripheral wall 28 at the lower peripheral edge is provided so as to be fitted onto the outer surface of the valve mounting cylinder 20 so that it cannot be pulled out and can be pushed down.
It is pushed up by. In the figure, 30 is packing.

According to the structure of this embodiment, when the movable part is pulled up through the operation button 4, the liquid and the air in the container body 1 are simultaneously sucked into the cylinder 2 through the foaming part 5, so that the liquid is bubbled in the cylinder 2. In this state, the cylinder 2 becomes a foam storage chamber. Therefore, when the movable part is pushed downward through the operation button 4, the bubbles in the cylinder 2 are pressurized and the aerosol valve 10 is opened. Therefore, while the operation button 4 is kept pressed, the aerosol valve 10 is opened. , Foam can be continuously ejected from the foam outlet 11.

"Effect of the device" As described above, in the foam dispenser of the present invention, the return spring is not used, and the stem 3, the operation button 4, and the movable part of the piston 9 can be pulled up and down, so the operation force is light. I'm sorry. Further, a mesh-shaped foam-forming part 5 is provided at the bottom opening of the cylinder 2, and the liquid inside the container body 1 is sucked and stored in the cylinder 2 together with air in the form of foam through the foam-forming part 5, and the discharge valve is Since the aerosol valve 10 is used, continuous foam injection is possible. Moreover, the operation is simple, simply pulling up the movable part and pressing the operation button 4. Moreover, since the number of parts is small and the structure is simple, it can be provided at low cost.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an embodiment of the foam dispenser of the present invention. 1 ... Container body, 2 ... Cylinder 3 ... Stem, 4 ... Operation button 5 ... Foaming part, 10 ... Aerosol valve

Claims (1)

[Scope of utility model registration request] 1. A container body 1 is connected to a bottom opening provided with a mesh-shaped foam-forming portion 5 and a suction valve 6 directly below the foam-forming portion 5 so as to connect a suction pipe 7 hanging downward in the container body 1. With
A cylinder 2 serving as a foam storage chamber which is opened from the mouth of the container body 1 by opening an air hole 8 communicating with a space inside the container body 1 and fitting a cylindrical piston 9 into the container body 1 so as to be vertically slidable. And a lower end of the stem 3 which is communicatively coupled to the cylindrical piston 9 and protrudes upward and outside, and a stem 3 having an aerosol valve 10 provided on the upper side, and a bubble discharge hole 11 on one side to open the same through the aerosol valve 10. A foam dispenser comprising an operation button 4 which is communicatively attached to the upper end of the stem 3 so as to be pushed down.