JP2568372Y2 - Ejector - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ejector for makeup, medicine, painting, and the like. More specifically, the present invention relates to an ejector that ejects contents such as a liquid and an emulsion stored in a container from an ejection port of an ejection button in a small amount.

[0002]

2. Description of the Related Art Conventionally, in this type of ejector, a spray button is depressed to push a stem against an urging member, and an elastic sealing member is deformed so that the inside of the stem and the cylinder chamber are formed in a through hole of the stem. And the contents in the cylinder chamber are guided into the stem, and are ejected from the ejection port of the ejection button.

[0003]

However, in this type of conventional ejector, after use, the content remaining near the ejection port gradually flows out over time and drips from the ejection port,
There was a problem of soiling the container and its surroundings. Therefore, an object of the present invention is to prevent the contents remaining near the injection port from dripping from the injection port with the elapse of time after using the injector.

[0004]

SUMMARY OF THE INVENTION Therefore, the present invention
As shown in the following illustrated embodiment, the injection button 22 is pushed down to push the stem 18 against the urging member 16, and the elastic seal member 17 is deformed so that the inside of the stem 18 and the cylinder chamber 11 are The contents in the cylinder chamber 11 are communicated with each other through the
In the ejector which is guided into the inside and ejects from the ejection port 22a of the ejection button 22, a vacuum space which narrows when the ejection button 22 is depressed, expands when the hand is released from the ejection button 22 and sucks the contents in the stem 18 is drawn. A
It is provided between the stem 18 and the elastic sealing member 17.

[0005]

When the ejector is used, the ejection button 22 is pressed down, and the stem 18 is pushed in against the urging force of the urging member 16, thereby narrowing the vacuum space and deforming the elastic seal member 17, A gap is formed between the stem 18 and the inside of the stem 18 to communicate with the cylinder chamber 11 through the through hole 18d of the stem 18. And the cylinder chamber 11
The contents inside are guided into the stem 18 and are ejected from the ejection port 22 a of the ejection button 22. On the other hand, when the hand is released from the ejection button 22, the stem 18 is pushed up by the urging force of the urging member 16, and the deformation of the elastic seal member 17 due to the movement of the stem 18 is eliminated. Next, the stem 18 is pressed against the elastic seal member 17 to release communication between the inside of the stem 18 and the inside of the cylinder chamber 11, and the vacuum space is expanded to suck the contents in the stem 18 into the vacuum space.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view of a main part of an ejector according to an embodiment of the present invention. FIG. 2 is a sectional view taken along line AA of FIG. 2, and FIG. 3 is a longitudinal sectional view of the stem taken along line BB of FIG.

[0007] Reference numeral 10 in the figure denotes a vertically arranged cylinder. The cylinder is provided with a plurality of steps 10m, 10a, 10b, and 10c in the middle to gradually reduce the diameter downward, and a flange 1 is provided on the outside of the first step 10m.
0d is provided. Inside the cylinder 10, a cylinder chamber 11 is formed, and a valve seat 10e having a gradually decreasing diameter is provided inside the third step portion 10c, followed by a suction port 10f and a pipe mounting port 10g. Is provided. Then, the upper end of the suction pipe 12 is inserted into the pipe mounting port 10g,
The inside of the pipe and the suction port 10f are communicated and connected.

In the cylinder 10, a ball valve 15 is inserted and placed on a valve seat 10e, and then an urging member 16 is inserted and its lower end is placed on a step 10b. Thereafter, the stem 18 to which the elastic seal member 17 is attached is inserted into the cylinder 10.

The stem 18 has a rod-like shape, and has a spouting passage 18a at the center from the upper end to the lower part, and a radially extending through hole 18b at the lower end of the spouting passage 18a. Circumferential groove 18
c is provided. The upper surface 18e of the circumferential groove 18c has an inclined shape gradually expanding outward as shown in the figure. An enlarged diameter portion 18f is provided at the lower end of the stem 18, and a concave portion 18g is provided to open downward inside.

The elastic seal member 17 is made of an elastic material such as rubber, and is formed in a cylindrical shape having a constricted portion 17a inside, and is provided with an outer upper seal portion 17b and an outer lower seal portion 17c on the outer periphery. An inner upper seal portion 17d and an inner lower seal portion 17e are provided around the periphery.

The upper end of the biasing member 16 is inserted into the recess 18g of the stem 18 and housed in the cylinder chamber 11, and the outer upper seal portion 17b and the outer lower seal portion 17c of the elastic seal member 17 are connected to the cylinder. 10 is slidably provided by pressing against the inner surface of the
Is protruded upward from the upper end of the cylinder 10.

On the other hand, the upper part of the cylinder 10 is placed in a cap-shaped mounting member 13 having a U-shaped cross section, and the flange 10h is engaged with the inner upper surface thereof.
The upper end 10h is provided to protrude upward through a. A fixed cap 20 is fitted to the upper end 10h of the cylinder 10. The fixing cap 20 is
b and the inner cylindrical portion 20a are formed concentrically and integrally, and the inner cylindrical portion 20a is press-fitted into the cylinder 10 so that the lower end abuts against the upper end of the elastic seal member 17 to slightly compress the urging member 16. And the engagement protrusion 20 of the outer cylindrical portion 20b.
c is hung on the upper end 10h of the cylinder 10.

The lower portion 18m of the annular groove 18c is pressed against the inner lower seal portion 17e by pushing up the stem 18 by the urging force of the urging member 16, and the inner upper seal portion 17d is pressed against the upper portion 18e. It is provided by pressing against the outer periphery of the stem 18 immediately above. Thus, while the communication between the inside of the cylinder chamber 11 and the ejection passage 18a is cut off, the vacuum space a is formed between the elastic seal member 17 and the stem 18 by communicating with the through hole 18d.

On the other hand, the upper end of the stem 18 protrudes outside through the inner cylindrical portion 20a, and the injection button 2
2 and the ejection port 22a and the ejection passage 18a
Are provided in communication with each other.

The mounting member 13 is screwed to the mouth of the container 30 and the cylinder 10 is suspended and held inside the container 30. The container 30 has a bottle shape,
Inside, for example, contents such as liquid and emulsion are stored.

Thus, when the ejector is used, the ejection button 2
2, the stem 1 is pressed against the biasing force of the biasing member 16.
Pressing 8 narrows the vacuum space and
The inner lower seal portion 17e is separated from the lower step portion 18m. Then, as shown in FIG. 4 , the elastic seal member 17 is deformed,
A gap is formed between the stem 18 and the ejection passage 18a in the stem 18 to communicate with the cylinder chamber 11 through the through hole 18d. Then, the contents in the cylinder chamber 11 are guided to the ejection passage 18a as indicated by an arrow, and the ejection button 22
From the injection port 22.

Thereafter, when the hand is released from the ejection button 22, the stem 18 is pushed up by the urging force of the urging member 16, and the deformation of the elastic seal member 17 due to the movement of the stem 18 is eliminated. Then, as shown in FIG.
The lower portion 18m is pressed against the inner lower seal portion 17e of the elastic seal member 17 to release the communication between the ejection passage 18a in the stem 18 and the inside of the cylinder chamber 11, and expand the vacuum space. At this time, the content in the ejection passage 18a is sucked into the vacuum space A, and the content remaining in the ejection port 22a is drawn into the mouth, and the content in the container 30 is sucked into the cylinder chamber 11 from the suction port 10f.

[0018]

Therefore, according to the ejector according to the present invention, when the hand is released from the ejection button in the depressed position, a part of the contents remaining in the ejection passage when the stem returns is removed by the elastic seal. As it sucks into the vacuum space created between the members and draws the contents of the jet part into the back of the mouth, the contents remaining near the jet over time can be prevented from dripping from the jet, and the dripping contents It is possible to prevent the container and its surroundings from being soiled with objects.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of an ejector according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA.

FIG. 3 is a longitudinal sectional view of the stem along the line BB.

FIG. 4 is an enlarged sectional view of a part of the ejector showing a state in which the ejection button is pressed down.

FIG. 5 is an enlarged cross-sectional view of a part of the ejector showing a state in which a hand is released from the ejection button and a stem is pressed against an elastic seal member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Cylinder chamber 16 Energizing member 17 Elastic seal member 18 Stem 18d Through hole 22 Injection button 22a Injection port Vacuum space

Claims (1)

(57) [Scope of request for utility model registration] 1. An injection button is pushed down to push a stem against an urging member, and an elastic seal member is deformed to communicate the inside of the stem with a cylinder chamber through a through hole of the stem. In the ejector that ejects the contents of the injection button from the injection port of the injection button and narrows when the injection button is depressed, expands when releasing the hand to suck the contents in the stem. An ejector comprising a vacuum space provided between the stem and the elastic seal member.