JP2002219386A - Aerosol type spray and jet valve device used therein - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate fear such that a stem rubber is damaged to generate a crack when a container is filled with content in the jet valve device of an aerosol type spray. SOLUTION: The aerosol type spray is constituted so that the horizontal hole 10a of a stem 10 is opened by shifting the stem rubber 12 fitted in a rubber fitting recessed part 10b when the stem 10 is pushed in and the content in the container is charged in the stem 10 from the horizontal hole 10a and passed through the stem 10 to be sprayed to the outside. The stem rubber 12 is slid at first without being immediately deformed, and the length L in the axial direction of the stem of the rubber fitting recessed part 10b is made sufficiently larger than the thickness T of the stem rubber 12, so that the upper surface B of the rubber fitting recessed part comes into contact with the stem rubber 12 after the horizontal hole 10a is opened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aerosol-type ejector for ejecting contents such as cosmetics, medicine, and painting in a container to the outside. And, in such a spouter, the spout is provided at the mouth of the container, for example, when the spray button is depressed and the stem is pushed in, the side hole of the stem is opened, and the contents in the container are put into the stem through the side hole. The present invention relates to an injection valve device that injects the fuel from the nozzle of the injection button to the outside through the stem.

[0002]

2. Description of the Related Art Conventionally, in an aerosol type ejector, as shown in FIG. 8, for example, a lateral hole 1a is formed in a stem 1, a stem fitting concave portion 1b is formed on the outer periphery of the lateral hole 1a, and the stem fitting is performed. The inner periphery of the stem rubber 2 was fitted tightly and without looseness into the joint recess 1b to completely close the lateral hole 1a.

In use, the injection button (not shown) is pushed down to push the stem 1 in, and the stem rubber 2 that fits in the rubber fitting recess 1b is deformed and displaced with the pushing, thereby opening the lateral hole 1a of the stem 1. Thus, the contents in the container are put into the stem 1 through the lateral hole 1a, and are sprayed through the stem 1 to the outside from the nozzle of the spray button.

By the way, when the contents are filled in the container before shipment with such an ejector, the actuator 4 of the filling head 3 is mounted on the upper end of the stem 1 as shown in FIG.
, The stem 1 is pushed down via the spring 5, and the stem rubber 2 that fits in the rubber fitting recess 1 b is deformed and displaced with the pushing down to open the lateral hole 1 a of the stem 1, as shown by the arrow in the figure. The contents were filled from the filling head 3 into a container (not shown). (For example, see Japanese Utility Model Application Laid-Open No. 53-125908)

[0005]

However, in such a conventional ejector, since the inner periphery of the stem rubber 2 is fitted into the rubber fitting concave portion 1b of the stem 1 without any margin, the stem 1 is filled when the contents are filled. Is pressed, the stem rubber 2 is immediately deformed, and the inner peripheral lower edge 2a (see FIG. 6) of the stem rubber 2 is strongly rubbed against the lower surface a of the rubber fitting concave portion 1b. The entrance corner c of the upper side surface b of the rubber fitting recess 1b was strongly pressed.

As a result, when the contents are filled in the container, there has been a problem that the stem rubber 2 is damaged and the stem rubber 2 is cracked.

Accordingly, a first object of the present invention is to solve the problem that the stem rubber is damaged and the stem rubber is cracked when the contents are filled in the container in the injection valve device of the aerosol type ejector. It is in.

A second object of the present invention is to reduce the deformation of the stem rubber and further improve the durability of the stem rubber in such an injection valve device.

A third object of the present invention is to further improve the durability of the stem rubber by weakening the pressing of the upper side entrance corner of the rubber fitting recess against the stem rubber in such an injection valve device. It is in.

[0010] A fourth object of the present invention is to provide an aerosol type ejector using an injection valve device which solves the above-mentioned problems.

[0011]

According to the first aspect of the present invention, in order to solve the first problem, when the stem is pushed in, the stem rubber that fits into the rubber fitting recess is shifted. In the aerosol type ejector that opens the side hole of the stem, puts the contents of the container into the stem through the side hole, and injects it through the inside of the stem, when the injection valve device pushes the stem, the stem rubber is pressed. In order not to be deformed immediately, the length of the rubber fitting concave portion in the stem axis direction is made larger than the thickness of the stem rubber,
It is characterized by the following.

According to a second aspect of the present invention, in order to solve the second problem, in the injection valve device according to the first aspect, when the stem is pushed in, the lateral hole is opened.
The length of the rubber fitting recess in the stem axial direction is formed so that the upper side surface of the rubber fitting recess contacts the stem rubber.

According to a third aspect of the present invention, in order to solve the third problem, in the injection valve device according to the first or second aspect, the upper side surface of the rubber fitting concave portion is inclined outward. Characterized by being formed by

According to a fourth aspect of the present invention, there is provided an aerosol type ejector including the injection valve device according to the first, second, or third aspect, in order to solve the fourth problem. And

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a longitudinal section of an injection valve device used in the aerosol type ejector according to the present invention.

Reference numeral 10 in the drawing denotes a tubular stem whose lower end is closed. The stem 10 communicates the inside and outside with the horizontal hole 1
0a, and an annular groove-shaped rubber fitting recess 10b is formed on the outer periphery of the lateral hole 10a.

The stem 10 is inserted through the center hole of the ring-shaped stem rubber 12 and then into the center hole of the mountain cup 14 on which the stem rubber 12 is overlapped. Then, the inner periphery of the stem rubber 12 is fitted into the rubber fitting concave portion 10b, and the stem rubber 12 is provided in a flange shape with respect to the stem 10.

In the present invention, as shown in FIG. 2, the length L of the rubber fitting recess 10b in the stem axis direction is made sufficiently larger than the thickness T of the stem rubber 12, for example, 1.5 times the thickness T. Double it. In the illustrated example, the upper surface B of the rubber fitting concave portion 10b is formed to be inclined outward at an angle θ.

Then, the lower end of the stem 10 is
6, the lower portion of the stem 10 is inserted into a cylindrical housing 18 as shown in FIG. 1, and the mountain cup 14 is hung on the upper portion of the housing 18 so that the peripheral edge of the stem rubber 12 is formed between the two. The illustrated injection valve device 20 is configured such that the stem rubber 12 closes the lateral hole 10a while being compressed.

Although not shown, the injection valve device 20
Puts the lower part into the container and extends the lower end of the pipe 22 attached to the housing 18 to the bottom in the container. Then, the periphery of the mountain cup 14 is wound and attached to the mouth of the container.

Now, in the final step of the manufacture of the ejector, when contents such as makeup, medicine, and painting are to be stored in the container to which the injection valve device 20 is attached as described above, FIG.
As shown in the figure, the packing 3 is pressed while the actuator 32 of the filling head 30 is applied to the upper end of the stem 10 and the stem 10 is pushed through the spring 34 as in the prior art.
6, the head case 38 is pressed against the injection valve device 20.

Then, as shown in FIG. 4, the stem rubber 12 is first slid and displaced in the rubber fitting concave portion 10b to completely open the lateral hole 10a, and then the upper side B of the rubber fitting concave portion 10b is stemmed. To the rubber 12 and then with further pushing of the stem 10
2 is slightly deformed.

As described above, according to the present invention, the length L of the rubber fitting recess 10b in the stem axial direction is made larger than the thickness T of the stem rubber 12, and when the stem 10 is pushed in, the stem rubber 12 is not immediately deformed. First, slide and shift to completely open the lateral hole 10a, and then apply the upper side surface B of the rubber fitting concave portion 10b to the stem rubber 12, and then further push the stem 10 and deform the stem rubber 12 slightly. I do.

Therefore, even when the stem 10 is pushed in greatly when filling the contents, the inner peripheral lower edge 1
2a does not strongly rub the lower surface A of the rubber fitting recess 10b. In addition, the entrance corner C of the upper side surface B of the rubber fitting concave portion 10b is not strongly pressed against the upper surface of the stem rubber 12. Therefore, when filling the contents in the container,
The possibility that the stem rubber 12 is damaged and the stem rubber 12 is cracked can be eliminated.

After the shipment, when using the ejector, the ejection button (not shown) is pushed down to push the stem 10 in. The stem rubber 12 is first slid and shifted in the rubber fitting concave portion 10b with the pushing, and then the stem is moved. 10
Then, as shown in FIG. 5, the stem rubber 12 is slightly deformed by applying the upper side surface B of the rubber fitting concave portion 10b as shown in FIG. Then, as indicated by an arrow in FIG. 5, the contents in the container are put into the stem 10 through the lateral hole 10a, and are jetted to the outside from the nozzle of the jet button through the stem 10.

[0026]

As described above, according to the first aspect of the present invention, when the stem is pushed in, the length of the rubber fitting concave portion in the stem axial direction is reduced so that the stem rubber is not immediately deformed. Since the size is larger than that, even when the stem is largely pushed in at the time of filling the content, the inner peripheral lower edge of the stem rubber does not strongly rub against the lower surface of the rubber fitting concave portion. In addition, the upper corner of the upper surface of the rubber fitting recess is not strongly pressed against the upper surface of the stem rubber 12. Therefore, when filling the contents into the container, it is possible to completely eliminate the possibility that the stem rubber is damaged and the stem rubber is cracked.

According to the second aspect of the present invention, the length of the rubber fitting concave portion in the stem axial direction is such that when the stem is pushed in, the upper surface of the rubber fitting concave portion hits the stem rubber after opening the lateral hole. Thus, in the injection valve device, the deformation of the stem rubber can be reduced, and the durability of the stem rubber can be further improved.

According to the third aspect of the present invention, since the upper surface of the rubber fitting concave portion is formed so as to be inclined outward, the upper side entrance corner of the rubber fitting concave portion with respect to the stem rubber in the injection valve device. And the durability of the stem rubber can be further improved.

According to the invention of claim 4, according to claim 1,
Since the injection valve device described in 2 or 3 is provided, it is possible to provide an aerosol type ejector using the injection valve device having the above-described effects.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an injection valve device used in an aerosol type ejector according to the present invention.

FIG. 2 is a partially enlarged view of the stem rubber portion.

FIG. 3 is a longitudinal sectional view of the injection valve device when filling the contents of the container of the ejector.

FIG. 4 is a partially enlarged view of the stem rubber portion.

FIG. 5 is a longitudinal sectional view of the injection valve device when the injector is used.

FIG. 6 is a partially enlarged view of a stem rubber portion in a conventional injection valve device.

FIG. 7 is a longitudinal sectional view of a conventional injection valve device when filling a container of an ejector with contents.

FIG. 8 is a longitudinal sectional view of the conventional injection valve device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Stem 10a Side hole 10b Rubber fitting recess 12 Stem rubber 12a Inner peripheral lower edge of stem rubber 14 Mountain cup 16 Spring 18 Housing 20 Injection valve device 22 Pipe 30 Filling head 32 Actuator A Lower surface of rubber fitting recess B Rubber fitting Upper surface of mating recess C Inlet corner of upper surface of rubber fitting recess L Length of rubber fitting recess in stem axis direction T Thickness of stem rubber θ Incline of upper surface of rubber fitting recess

Claims (4)

[Claims] When a stem is pushed in, a lateral hole of the stem is opened by displacing a stem rubber that fits into a rubber fitting concave portion, and contents in a container are put into the stem through the lateral hole, and the inside of the stem is inserted. When the stem is pushed in the aerosol type ejector ejecting outside through
An injection valve device, wherein a length of the rubber fitting concave portion in a stem axial direction is made larger than a thickness of the stem rubber so that the stem rubber is not immediately deformed. 2. When the stem is pushed in, the length of the rubber fitting recess is formed in the stem axial direction so that the upper surface of the rubber fitting recess hits the stem rubber after opening the lateral hole. The injection valve device according to claim 1, comprising: 3. The injection valve device according to claim 1, wherein an upper side surface of the rubber fitting concave portion is formed to be inclined outward. 4. An aerosol type ejector comprising the injection valve device according to claim 1, 2 or 3.