JP3634884B2 - Aerosol device - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to an aerosol device. More specifically, the present invention relates to an aerosol device capable of stably injecting contents.
[0002]
[Prior art]
As shown in FIG. 6, the conventional aerosol device is fixed to a bottomed cylindrical container body 51, a mountain cap 53 attached to the upper end opening 52 of the container body 51, and a lower portion of the mountain cap 53. And a valve assembly 54. The valve assembly 54 includes a housing 55 and a stem 57 that protrudes outward from the cap 53 by a spring 56 from the inside of the housing 55, and an outer peripheral flange portion 58 of the housing 55 is a bent portion of the cap 53. 59 and the inclined portion 60. A stem rubber 61 is interposed at the upper end of the housing 55. When the stem rubber 61 is not in use, the outlet port 63 formed in the neck portion 62 of the stem 57 is sealed to prevent the contents stored in the container main body 51 from being injected. Further, the rubber 61 is provided with an annular portion 64 formed at the upper end of the housing 55, and a clamping force is applied between the annular portion 64 and the bent portion 59, thereby preventing leakage of contents. ing. Reference numeral 65 denotes a dip tube, and 66 denotes a push button fitted into the stem 57.
[0003]
In the manufacture of the aerosol device, after the contents are put into the container body 51, the upper end opening 52 of the container body 51 is covered with a mountain cap 53 in which a valve assembly 54 is caulked, and then the opening 52 is curled. It has been integrated. Thereafter, a gas for injecting the contents is sealed inside the container body 51 through the stem 57 and the dip tube 65 of the valve assembly 54.
[0004]
[Problems to be solved by the invention]
However, since the sealed injection gas remains in the housing and the dip tube in the manufactured aerosol device, only the gas is injected at the first use, and then the contents are injected. Therefore, there is a possibility that the user is uncomfortable and the product image is obscured. As a countermeasure, it is conceivable that the residual gas is eliminated in the manufacturing process before shipment. However, for that purpose, it is necessary to increase the number of processes, and there is a problem that the manufacturing cost increases.
[0005]
In the aerosol device, as shown in FIG. 7, after the stem 57 is pushed down and the content is injected by the internal pressure, the content remains in the housing 55 and the dip tube 65. In particular, when the content is an emulsifying system such as a shaving cream or hair mousse, if the content remains after use, the residual content may be separated. Therefore, at the time of reuse, the first projectile is not emulsified and cannot be foamed well. As a result, in use after leaving, the aerosol device is shaken to mix and emulsify the contents. However, the inside of the housing 55 and the dip tube 65 are narrow and the internal pressure is applied. The residual contents in the dip tube 65 do not flow, and the residual contents cannot be mixed and emulsified well. In addition, even if the tube diameter is reduced in advance to reduce the residual content, there is a problem in that it cannot be successfully bubbled because the original propellant contains a stock solution that has not been emulsified.
[0006]
In view of the above circumstances, an object of the present invention is to provide a user-friendly aerosol device that stably injects contents at all times.
[0007]
[Means for Solving the Problems]
The aerosol device of the present invention includes (a) a bottomed cylindrical container main body for storing contents composed of a stock solution and a propellant
(B) a lid for sealing the upper end opening of the container body;
(C) A valve assembly including a housing whose upper end is fixed to the lower portion of the lid through a stem rubber and a stem that slidably protrudes from the inside of the housing to the outside of the lid. An aerosol device,
The upper end of the housing, characterized Rukoto is formed communicating passage for communicating the interior of the container body and inside of the housing, wherein the communication passage is closed by the stem rubber when to inject the contents It is said.
[0008]
An inner peripheral annular portion and an outer peripheral annular portion that contacts the stem rubber are formed at the upper end of the housing, and the communication path is formed in the outer peripheral annular portion, and the stem is not pushed down. When the stem rubber is not in contact with the inner peripheral annular portion and the stem is pushed down, the stem rubber is preferably in contact with the inner peripheral annular portion .
[0009]
It is preferable that the outer surface of the inner peripheral annular portion is a smooth surface.
[0010]
[Action]
According to the aerosol device of the present invention, since the communication passage is formed at the upper end of the housing, when the push button is released after use, the inside of the container body and the inside of the housing are brought into communication with each other through the communication passage. The contents inside the housing return to the inside of the container body. As a result, even if the contents of the emulsification system that separates if left for a while after jetting the contents, it can be mixed and emulsified by returning to the inside of the housing, so it should be jetted in a sufficiently foamed state Can do.
[0011]
【Example】
The aerosol device of the present invention will be described below with reference to the accompanying drawings.
[0012]
FIG. 1 is a cross-sectional view showing an embodiment of the aerosol device of the present invention, FIG. 2 is an enlarged perspective view of the main part of the aerosol device in FIG. 1, FIG. 3 is a cross-sectional view showing the use of the aerosol device in FIG. The principal part expanded sectional view which shows the other Example of the aerosol apparatus of this invention, FIG. 5: is a principal part expanded sectional view which shows use of the aerosol apparatus in FIG.
[0013]
As shown in FIGS. 1 to 2, the aerosol device of the present invention includes a bottomed cylindrical container body 1 for storing contents, a lid body 3 for sealing the upper end opening 2 of the container body 1, and A valve assembly 8 comprising a housing 6 having an upper end 4 fixed to the lower portion of the lid 3 via a stem rubber 5 and a stem 7 slidably protruding from the inside of the housing 6 to the outside of the lid 3. It is composed of
[0014]
The content is an emulsified content in which water and an active ingredient are used as a stock solution, and LP gas, DME (dimethyl ether) or a mixture thereof is used as a propellant. For example, a shaving cream or a hair mousse can be used. However, it is not particularly limited in the present invention.
[0015]
The container body 1 is a pressure vessel made of a metal such as aluminum or steel, glass or plastic. The lid 3 is curled to the curled portion 9 formed at the opening edge of the container main body 1 via a sealing material 10 and is caulked integrally. For example, a known mountain cap can be used as the lid 3.
[0016]
A dip tube 11 is connected to the lower end of the housing 6, and an inner peripheral annular portion 12 and an outer peripheral annular portion 13 that abuts on the stem rubber 5 protrude from the upper end 4. Further, an outer peripheral flange 16 is formed on the outer periphery of the outer peripheral annular portion 13 so as to be assembled to the bent portion 14 and the inclined portion 15 of the lid 3. The outer peripheral annular portion 13 and the outer peripheral flange 16 are formed with notched communication passages 17 for communicating the inside of the housing 6 with the inside of the container body 1. The communication path 17 is not limited to a notch shape, and may be a through hole or the like, and can be appropriately selected depending on characteristics such as the viscosity of the contents.
[0017]
The stem rubber 5 has an inner peripheral end 18 fitted into a neck portion 19 of the stem 7 and closes a lead-out hole 20 for leading out the contents. The stem rubber 5 holds a stem 7 that is biased by an elastic member 21 such as a spring. A push button 23 having a spout 22 formed on its upper surface is fitted on the stem 7.
[0018]
In this embodiment, a mountain cap is used as a lid, and a housing is fixed to the lower part thereof. However, the present invention is not limited to this, and a structure that does not use a mountain cap, such as an opening edge of a main body container. You may make it fix a housing directly to. Further, in this embodiment, the communication path is also formed on the outer peripheral flange, but it is also possible to form a groove formed along the outer peripheral surface of the housing without being formed on the outer peripheral flange.
[0019]
Next, a usage example of the aerosol apparatus of the present invention will be described.
[0020]
First, from the state before use shown in FIG. 1, as shown in FIG. 3, when the user starts pressing the push button 23 with a finger, the stem rubber 5 is pushed downward by the neck portion 19 of the stem 7, The intrusive communication path 17 that is difficult for the annular portion 12 is closed. When the push button 23 is further pressed, the outlet hole 20 opens, and the contents are ejected from the spout 22 through the gap 24 formed by the housing 6 and the stem 7 due to the internal pressure. This injection state is continued until the stem 7 contacts the bottom 25 of the housing 6.
[0021]
Next, when the finger is released from the push button 23, the stem 7 is lifted by the elastic member 21, and the stem rubber 5 also follows and is restored (see FIG. 1). At this time, the stem rubber 5 closes the outlet hole 20 and finishes the content injection. Further, since the stem rubber 5 is separated from the inner peripheral annular portion 12, the communication passage 17 is opened, and the inside of the housing 6 and the inside of the container body 1 are brought into a communication state.
[0022]
If left for a while after injection, the contents remaining in the housing 6 and the dip tube 11 are separated. In the conventional aerosol apparatus, the residual contents could not be mixed and emulsified even if the apparatus was shaken. However, in the aerosol device of the present invention, since the communication path 17 communicating with the inside of the container body 1 is formed at the upper end of the housing 6, when the finger is released from the push button 23, the internal pressure inside the housing and inside the body container is increased. The contents inside the housing 6 and the dip tube 11 flow out into the container body 1 through the dip tube 11.
[0023]
Next, another embodiment of the aerosol apparatus of the present invention will be described.
[0024]
As shown in FIG. 4, the present embodiment is the same as the above-described embodiment except that the outer surface of the inner peripheral annular portion 32 is a smooth surface.
[0025]
In the present specification, the smooth surface is a broad concept including not only a curved surface such as an arc surface, an ellipsoid surface, and a hyperboloid, but also a flat surface and a polygonal surface.
[0026]
According to the aerosol device of the present embodiment, as shown in FIG. 5, when the stem 7 is pushed down, the stem rubber 5 is pushed down, and its inner peripheral end 18 is deformed into a curved shape. The inner peripheral surface is in close contact with the inner peripheral annular portion 32 of the smooth surface. As a result, the aerosol device of the present embodiment has improved sealing performance in the inner peripheral annular portion 32 than the aerosol device of the above-described embodiment, and can stably and reliably inject the contents.
[0027]
【The invention's effect】
As described above, according to the aerosol device of the present invention, the communication passage for communicating the inside of the housing and the inside of the container body is formed at the upper end of the housing of the valve assembly. The container is brought into communication, and the contents inside the housing and the dip tube return to the inside of the main body container. As a result, at the time of use, the mixed and emulsified contents can always be bubbled and jetted by shaking the aerosol device.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an embodiment of an aerosol device of the present invention.
FIG. 2 is an enlarged perspective view of a main part of the aerosol device in FIG.
3 is a cross-sectional view showing the use of the aerosol device in FIG.
FIG. 4 is an enlarged cross-sectional view of a main part showing another embodiment of the aerosol device of the present invention.
FIG. 5 is an enlarged cross-sectional view of a main part showing use of the aerosol device in FIG. 4;
FIG. 6 is a cross-sectional view showing an example of a conventional aerosol device.
7 is a cross-sectional view showing the use of the aerosol device in FIG. 6. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Container body 2 Upper end opening part 3 Lid 4 Upper end 5 Stem rubber 6 Housing 7 Stem 8 Valve assembly 12, 32 Inner ring part 13 Outer ring part 17 Communication path

Claims (4)

(A) a bottomed cylindrical container main body for storing contents composed of a stock solution and a propellant;
(B) a lid for sealing the upper end opening of the container body;
(C) A valve assembly including a housing whose upper end is fixed to the lower portion of the lid body via a stem rubber, and a stem that slidably protrudes from the inside of the housing to the outside of the lid body. An aerosol device,
The upper end of the housing, characterized Rukoto is formed communicating passage for communicating the interior of the container body and inside of the housing, wherein the communication passage is closed by the stem rubber when to inject the contents An aerosol device. The upper end of the housing are formed with an inner peripheral annular portion and the outer peripheral annular portion on a stem rubber abuts, said communication passage Ri is Na is formed on the outer peripheral annular portion, when the stem is not depressed The aerosol device according to claim 1, wherein the stem rubber does not contact the inner peripheral annular portion, and the stem rubber contacts the inner peripheral annular portion when the stem is pushed down . The aerosol apparatus according to claim 2, wherein an outer surface of the inner peripheral annular portion is a smooth surface. The aerosol apparatus according to claim 1, 2 or 3, wherein the content is an emulsifying system.

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