JP2004105902A - Jetting nozzle for foam dispenser - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a liquid from dropping from an air introduction route without fail to improve handleability. <P>SOLUTION: The jetting nozzle is composed of a jetting chip fixed to the tip of a jetting pipe of a foam dispenser and having an opening communicating with the pathway of the jetting pipe and a foam generation member equipped with a foam producing pipe which, in the presence of outside air mixed, foams and discharges the contents jetted through the open pore of the jetting chip. In the jetting chip, an annular body is installed which surrounds the opening and contacts the inside of the foam producing pipe or very slightly comes into the inside with a minute gap remaining. On at least one side of the annular body, a notch or a window opening for introducing outside air is formed. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a spray nozzle suitable for use in a foamer dispenser that blows out the contents sucked and pressurized by a pump in a foam state, and relates to a liquid from an outside air introduction path which cannot be avoided in this type of nozzle. It is intended to surely prevent dripping.
[0002]
[Prior art]
A foamer dispenser that foams out contents such as mold removers, bleaching agents, and hair styling agents and blows it out is a trigger type that pulls out the contents by pulling the lever, and pushes out the contents by pushing the pressing head. Priming types are known.
[0003]
Regardless of the type of the spray nozzle mounted on the former dispenser as described above, the spray tip mounted on the spray cylinder of the dispenser body and the content sprayed from the spray tip are foamed to the outside. It is composed of a foam generating member provided with a foaming cylinder to be discharged, and its structure is almost common.
[0004]
By the way, in the conventional injection nozzle mounted on the former dispenser, since a gap for introducing outside air is provided between the injection tip and the foaming cylinder, a part of the content injected from the injection tip is partially removed. The liquid enters the gap, flows along the outside air passage, flows outside, and causes liquid dripping.
[0005]
In order to eliminate the dripping as described above, there has been proposed a nozzle having a structure in which a dripping prevention mechanism is provided in a nozzle body corresponding to an injection tip, and this is abutted against a foaming cylinder (for example, And Patent Document 1).
[0006]
[Patent Document 1]
JP-A-2002-96857.
[0007]
However, such a nozzle may not be able to reliably hit the liquid dripping prevention mechanism against the foaming tube depending on the molding condition and the assembling condition, so that the liquid dripping from the outside air introduction path is completely avoided. It is not at present.
[0008]
[Problems to be solved by the invention]
An object of the present invention is to propose a novel injection nozzle that can solve the above-described conventional problems.
[0009]
[Means for Solving the Problems]
The present invention is directed to a spray tip which is attached to a tip of a spray cylinder of a former dispenser and has an opening connected to a passage of the spray cylinder, and the content sprayed from the opening of the spray tip is foamed in a mixture with outside air. A nozzle comprising a foam generating member provided with a foaming cylinder to be discharged to the outside,
The injection tip is provided with an annular body that surrounds the opening and abuts on the inside of the foam-forming cylinder or enters a very small area with a small gap, and a cutout for introducing outside air to at least one side of the annular body. Or, it is an injection nozzle for a former dispenser characterized by having a window hole.
[0010]
In the injection nozzle having the above-described configuration, it is preferable that the rear end portion of the foaming cylinder fitted into the annular body has an inner diameter smaller than the inner diameter of the front end region where the contents are foamed and discharged.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described more specifically with reference to the drawings.
[0012]
1 to 4 show an example in which the injection nozzle according to the present invention is mounted on a trigger-type former dispenser.
[0013]
1 to 4, reference numeral 1 denotes an injection cylinder of a dispenser, 2 denotes an injection tip which is fixedly held at the tip of the injection cylinder 1 and has an opening h connected to a passage 1a of the injection cylinder 1, and 3 denotes an injection tip. It is a foam generating member. The foam generating member 3 is provided with a foaming cylinder 3a for foaming the content sprayed from the opening h of the spray tip 2 and mixing it with the outside air and discharging the same to the outside, and an outside air introduction passage 3b surrounding the foaming cylinder 3a. I have.
[0014]
Reference numeral 4 denotes a rod-shaped element which can be integrally provided at the leading end of the foaming tube 3a and which is a shape-supporting member. Reference numeral 5 denotes an annular body provided so as to surround the opening h in the injection tip 2. The annular body 5 comes into contact with the inside of the foaming tube 3a or enters the foaming tube 3a very slightly, leaving a small gap, and its outer side is connected to the outside air introduction passage 3b as shown in FIG. A connecting notch 5a is provided.
[0015]
In the dispenser having the structure shown in FIGS. 1 to 4 described above, when the operation of pulling and releasing the lever 6 is repeated a plurality of times, the contents in the container are sucked into the cylinder 7 and pressurized. 2 is pressure-fed toward the tip of the injection cylinder 1 according to the arrow in FIG.
[0016]
The content that has reached the injection tip 2 is radially ejected from the opening h into the foaming cylinder 3a, and is mixed with the outside air that has entered the foaming cylinder 3a from the outside air introduction path 3b through the notch 5a. It becomes a foam and is discharged from the tip of the foaming tube 3a to the outside.
[0017]
In the injection nozzle according to the present invention, the annular body 5 is placed between the foaming cylinder 3a and the ejection tip 2 such that the annular body 5 comes into contact with the inside of the foaming cylinder 3a or enters the foaming cylinder 3a with a very small gap. Since only the notches 5a are formed on both sides of the annular body 5, the contents in the foaming cylinder 3a do not leak to the outside through the outside air introduction passage 3b.
[0018]
The cutout 5a of the annular body 5 may be a window hole as shown in FIG. 6, and the number of the holes can be changed as appropriate, and this point is not limited.
[0019]
As shown in FIG. 7 on an enlarged scale, a principal part of Zoawa cylinder 3a, granulated foam cylinder 3a and the annular member 5 by smaller than the inner diameter L ₁ of the inner diameter L is the tip area of the portion where the annular member 5 is fitted Even if a minute gap is left between the foaming cylinder 3a, a part of the content remaining in the foaming tube 3a can be reliably prevented from flowing out to the outside air introduction passage 3b, and as a result, a foam is formed. The discharged contents can be discharged more advantageously. The region from the inner diameter L ₁ of Zoawa tube 3a until the inner diameter L may be a flat surface or a curved surface or stepped any stepped surface or the like shape, having a tapered inclined, adopting any shape Can be created, but there is no particular limitation.
[0020]
In the embodiment of the present invention, a structure in which the entirety of the spray tip 2 is covered with the foam generating member 3 has been described as an example. It is also possible to adopt a structure in which the member 3 is provided.
[0021]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, it is possible to prevent liquid dripping from an outside air introduction path reliably, and usability is improved.
[Brief description of the drawings]
FIG. 1 is a view showing an example in which an injection nozzle according to the present invention is mounted on a trigger-type former dispenser.
FIG. 2 is a sectional view of FIG.
FIG. 3 is a front view of FIG. 1;
FIG. 4 is a plan view of FIG. 1;
FIG. 5 is an external perspective view of a spray tip.
FIG. 6 is another external perspective view of the ejection tip.
FIG. 7 is an enlarged view of a foaming cylinder.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Injection cylinder 1a Passage 2 Injection tip 3 Bubble generating member 3a Foaming cylinder 3b Outside air introduction path 4 Bar-shaped element 5 Annular body 5a Notch 6 Lever 7 Cylinder h Opening

Claims (2)

An injection tip attached to the tip of the injection cylinder of the former dispenser and having an opening connected to the passage of the injection cylinder, and the content sprayed from the opening of the injection tip is foamed under the mixture with the outside air to the outside. A nozzle comprising a foam generating member provided with a foaming cylinder for discharging,
The spraying tip is provided with an annular body that surrounds the opening and abuts on the inside of the foaming cylinder or leaves a very small gap and leaves a very small gap, and a cutout or a cutout for introducing outside air to at least one side of the annular body. An injection nozzle for a former dispenser characterized by having a window hole. The injection nozzle according to claim 1, wherein a rear end portion of the foaming cylinder that fits into the annular body has an inner diameter smaller than an inner diameter of a front end region where the contents are foamed and discharged.

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