JP2004337654A - Ejecting apparatus and ejector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an ejector of which the components are easily classified to facilitate a recycling use of the constituents. <P>SOLUTION: In the ejecting apparatus P which is attached to the mouth part 10a of a vessel 10 and ejects the content in the vessel to the outside, an outer circumferential groove g is disposed on a cylinder 12 being a housing and a thin-walled part 12g is formed. Upon the disposal, the cylinder is doubly folded on the position of the outer circumferential groove g and it is made possible to take out a metal spring 18 and a check valve 16 which are housed inside the cylinder. As a result, the constituents are classified into plastic components and metal components and are recycled. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a pump-type or aerosol-type ejection device which is attached to a mouth of a container and ejects the contents of the container to the outside. Also, the present invention relates to an ejector for makeup, disinfection, cleaning, medicine, painting, etc., which is attached to the mouth of a container.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in an ejector for makeup or the like, as shown in FIG. 6, for example, a pump-type ejector 2 is attached to a mouth 1a of a container 1. In use, the operation button 3 of the ejection device 2 is pushed in, the piston 6 is pushed down against the spring 5 in the cylinder 4 serving as a housing, the on-off valve 7 is opened, and the pressure chamber 4a of the cylinder 4 is not shown. The contents to be blown out from inside the piston 6 into the operation button 3, and are ejected from the beak-shaped ejection pipe 3 a provided on the operation button 3 to the outside.
[0003]
After the ejection, when the user releases the operation button 3, the piston 6 is pushed up by the urging force of the spring 5, the on-off valve 7 is closed, the pressure chamber 4 a of the cylinder 4 is negatively pressed, and the check valve 8 is opened to open the container 1. The contents were sucked into the cylinder 4.
[0004]
[Patent Document 1] Japanese Patent Application Laid-Open No. 2000-62871 A specific example of this type of ejector is one disclosed in, for example, Patent Document 1. In such an ejector, generally, a spring and a check valve provided in a cylinder are made of metal, and others are almost made of plastic.
[0005]
[Problems to be solved by the invention]
By the way, today, there is a strong demand for recycling of parts from the viewpoint of resource protection and environmental protection. For this reason, it is necessary to recycle as much of the component parts as possible in the ejector.
[0006]
However, for recycling, it is necessary to separate plastic and metal ones. However, it is impossible to take out the metal spring 5 and the check valve 8 provided in the plastic cylinder 4. It was difficult. Therefore, it has conventionally been very difficult to recycle the ejector.
[0007]
Therefore, an object of the present invention is to make it easy to separate components at the time of disposal in an ejector, and to simplify the recycling use of the components.
[0008]
[Means for Solving the Problems]
In order to achieve this object, the invention according to claim 1 is directed to an ejection device which is attached to a mouth of a container and ejects the contents of the container to the outside. A thin portion is formed as much as possible.
[0009]
In the jetting device according to the present invention, at the time of disposal, the housing is detached from the container, for example, pulled out halfway, an external force is applied in a state where the tip of the housing is hung on the mouth of the container, and the housing is divided at the thin portion to separate the housing. After folding, the components are completely pulled out of the container and taken out of the housing, for example, a spring or a check valve, and the components are separated and recycled.
[0010]
According to a second aspect of the present invention, in the jetting device of the first aspect, the housing is a cylinder that houses a spring and a check valve therein.
[0011]
According to a third aspect of the present invention, in the jetting device according to the first or second aspect, the thin portion is formed by providing an outer peripheral groove.
[0012]
According to a fourth aspect of the present invention, in the jetting device according to any one of the first to third aspects, the thin portion is formed on the housing so that the housing can be folded in two by hanging the housing on the opening of the container and applying an external force. Forming.
[0013]
According to a fifth aspect of the present invention, there is provided an ejection device comprising the ejection device according to any one of the first to fourth aspects.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a central longitudinal section of a shampoo jetting device in which a jetting device according to the present invention is attached to a container.
[0015]
Reference numeral 10 in the figure is a container. The container 10 is made of a plastic material in the shape of a bottle, is provided with an external thread on the outer periphery of the mouth 10a, and is not shown in the figure. In this example, a shampoo liquid is stored as an internal content in this example.
[0016]
A pump-type ejection device P according to the present invention is attached to the mouth 10a of the container 10.
[0017]
The ejection device P includes a plastic cylinder 12 as a housing. The cylinder 12 is provided with a flange 12a at the upper end and two stepped portions 12b and 12c in the middle to gradually reduce the diameter downward in the figure. An air suction hole 12d penetrating in the radial direction is formed immediately below the first step portion 12b, and a valve seat 12e having a gradually decreasing diameter is provided in the second step portion 12c downward. A pipe mounting port 12f is formed below.
[0018]
The upper end of the plastic pipe 14 is press-fitted into the pipe mounting port 12f of such a cylinder 12. Then, a ball-shaped metal check valve 16 is inserted from above into the cylinder 12, placed on the valve seat 12e, and then a coil-shaped metal spring 18 is inserted into the second step portion. Place on 12c. Thereafter, the piston 20 to which the on-off valve 22 is attached is put in and put on the spring 18.
[0019]
The piston 20 is made of plastic, has a tubular shape, has a pipe 20a whose inside is closed at a lower portion, and is provided with a horizontal hole 20b in the radial direction in communication with the pipe 20a. Form a fitting groove.
[0020]
On the other hand, the on-off valve 22 has an annular shape made of plastic rubber, and has an annular convex portion 22a protruding inward from the inner peripheral surface at an intermediate portion. Then, the annular convex portion 22 a is fitted into the fitting groove, and the outer peripheral surface of the on-off valve 22 is pressed against the inner peripheral surface of the cylinder 12.
[0021]
Then, a plastic screw cap 24 is put on the upper part of the cylinder 12. The screw cap 24 has a female screw on the inner periphery, and has a downward cylindrical portion 24b protruding downward from the center of the top portion 24a and an upward cylindrical portion 24c protruding upward. Then, the piston 20 is inserted into the downwardly directed tubular portion 24b and the upwardly directed tubular portion 24c, and the downwardly directed tubular portion 24b is inserted into the cylinder 12, and the opening / closing valve 22 is pushed at the tip to slightly push the piston 20, thereby slightly compressing the spring 18. The top portion 24a is placed on the flange 12a of the cylinder 12, and the screw cap 24 is attached to the flange 12a.
[0022]
After that, the operation button 26 is attached to the tip of the piston 20. The operation button 26 is made of plastic and has an ejection passage 26a communicating with the conduit 20a of the piston 20 therein. The ejection button 26b communicates with the ejection passage 26a to protrude and form an ejection tube 26b in a beak shape. Is provided with an injection port 26c at the tip thereof.
[0023]
Then, a screw cap 24 is put on the mouth portion 10a with a plastic rubber packing 28 interposed between the upper end surface of the mouth portion 10a and the flange 12a, and the spout device P is attached to the container 10.
[0024]
Accordingly, the piston 20 is pushed up by the urging force of the spring 18, and the lower portion of the fitting groove is pressed against the lower surface of the annular convex portion 22a to close the on-off valve 22, thereby interrupting the communication of the piston 20 with the pipeline 20a. Thus, a pressure chamber 30 is formed in the cylinder 12.
[0025]
Now, when using this ejector, the operation button 26 is pushed in the direction of arrow A in FIG. 1 against the spring 18 and the piston 20 is pushed down in the cylinder 12. Then, the piston 20 moves at the same position as the on-off valve 22 due to frictional resistance with the inner surface of the cylinder 12, and the upper part of the fitting groove contacts the upper surface of the annular convex portion 22 a of the on-off valve 22.
[0026]
Then, when the piston 20 is pushed in, the opening / closing valve 22 is deformed to open the lateral hole 20b to communicate the pressure chamber 30 with the pipe line 20a, while increasing the pressure in the pressure chamber 30 and increasing the shampoo liquid in the pressure chamber 30. Is sent out to the pipeline 20a through the horizontal hole 20b, and is further ejected to the outside through the ejection port 26c at the tip of the ejection pipe 26b through the ejection passage 26a.
[0027]
Then, at the final stage of the depression, the on-off valve 22 passes through the position of the air suction hole 12d to communicate the inside of the container 10 with the outside, and the inside of the container 10 is set to the atmospheric pressure. Thereafter, when the operator releases the operation button 26 to release the pushing, the spring 18 pushes up the piston 20 in the direction of arrow B in the figure. Next, the piston 20 moves at the position where the on-off valve 22 remains as it is due to frictional resistance with the inner surface of the cylinder 12, and closes the horizontal hole 20 b with the inner surface of the annular convex portion 22 a to cut off the communication between the pipe line 20 a and the pressure chamber 30. Then, the lower surface of the fitting groove is brought into contact with the lower surface of the annular convex portion 22a of the on-off valve 22 to close the on-off valve 22.
[0028]
Then, when the on-off valve 22 is slid together with the piston 20 to return to the state shown in FIG. 1, the pressure in the pressure chamber 30 is reduced to a negative pressure, the check valve 16 is opened, and the shampoo liquid (not shown) in the container 10 is pressurized. Suck into the room 30.
[0029]
In the present invention, a thin portion 12g is formed in the cylinder 12, which is a housing of the ejection device P, as shown in FIG. The thin portion 12g may be formed at the time of molding the cylinder 12, or may be formed by cutting after molding.
[0030]
At the time of disposal, the ejection device P is detached from the container 10 and is drawn out halfway, for example, as shown in FIG. 3, and is indicated by an arrow C in a state where the tip of the cylinder 12 which is a housing is hung on the mouth 10 a of the container 10. The external force is applied in the lateral direction, the cylinder 12 is divided at the position of the outer circumferential groove g, and the cylinder 12 is folded in half as shown in FIG. 4 and then completely pulled out of the container 10 and inverted as shown in FIG. 18. The check valve 16 is taken out, and the components are separated into plastic components and metal components, and each component is recycled.
[0031]
【The invention's effect】
As described above, according to the present invention, according to the present invention, in the ejector, a thin portion is formed in the housing of the ejecting device so as to be able to take out the internal components by folding it in half. After splitting and folding the housing in half, take out the metal springs, check valves, etc. in the housing, separate the components into plastic parts and metal parts and recycle, so separate each part at the time of disposal As a result, the recycling and use of the components can be simplified.
[0032]
According to the fifth aspect of the present invention, since the ejection device according to any one of the first to fourth aspects is provided, it is possible to provide an ejector provided with the ejection device having the above-described effect.
[Brief description of the drawings]
FIG. 1 is a central longitudinal sectional view of a shampoo ejector in which a pump-type ejector is attached to a container.
FIG. 2 is a front view of an ejection device provided in the ejection device.
FIG. 3 is a vertical cross-sectional view showing a state in which the ejection device is removed from the container, pulled out halfway, and the tip of the cylinder is hung on the mouth of the container when the ejector is discarded.
FIG. 4 is a longitudinal sectional view showing a state in which a cylinder is divided at an outer circumferential groove position and folded in two.
FIG. 5 is a central longitudinal sectional view showing a state in which the ejection device is completely drawn out of the container and a spring and a check valve in the cylinder are taken out.
FIG. 6 is a longitudinal sectional view of a conventional ejector.
[Explanation of symbols]
10 Container 10a Container mouth 12 Cylinder (housing)
12g Thin part 16 Check valve (internal parts)
18 Spring (internal parts)
P Jetting device g Outer groove

Claims (5)

In an ejection device attached to the mouth of a container and ejecting the contents of the container to the outside,
An ejection device characterized in that a thin-walled portion is formed in a housing so as to be able to take out an internal part by folding it in half. The ejection device according to claim 1, wherein the housing is a cylinder that houses a spring and a check valve therein. The ejection device according to claim 1, wherein the thin portion is formed by providing an outer peripheral groove. The jet according to any one of claims 1 to 3, wherein the thin portion is formed in the housing so that the thin portion can be folded in two by applying the external force by hooking the housing to the mouth of the container. vessel. An ejector comprising the ejection device according to any one of claims 1 to 4.

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