JPH0529097Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Objective of the Invention) The purpose of this invention is to provide an aerosol injection container that has a simple structure and a simple production means.

(Structure of the invention) This invention will be explained below with reference to the illustrated embodiment. Reference numeral 1 denotes a valve housing, which is made of a thick-walled cylindrical soft elastic body with a flange 11, and has a stepped shelf 12 in its shaft hole. It is formed. 2 is a valve stem, which has a circumferential groove 23 bored in its lower part, an upper collar 21 and a lower collar 22 are formed across this circumferential groove 23, and a bottomed shaft hole 25 is bored therein. This shaft hole 25 is connected to the circumferential groove 23 via the side hole 24. 3 is a push button in which an injection passage 32 following an injection port 31 is bored. Reference numeral 4 denotes a settling ring, which has a shaft hole having a smaller diameter than the upper flange 21 of the valve stem. 5 is a cylindrical can body, and an annular constriction 51 is formed in the cylindrical wall. The aerosol injection can according to this invention includes the above-mentioned valve housing 1, valve stem 2, push button 3, settling ring 4, and can body 5.
The upper flange 21 and lower flange 22 of the valve stem are tightly fitted into the shaft hole of the valve housing 1, and the lower flange 22 is seated on the stepped shelf 12. Also,
The flange portion 11 of the valve housing is formed by the mouth edge portion 52 and the constriction portion 51 of the can body, which is bent inwards.
It is tightly fitted and fixed to the can body 5 by applying pressure through the can body 5. Furthermore, the push button 3 is mounted on the valve stem 2 and connects the injection passage 32 to the axial hole 25 of the valve stem.

Since this device is constructed as described above, the can 5 is filled with a propellant containing a propellant before use. As mentioned above, since the lower flange 22 of the valve stem is tightly inserted into the shaft hole of the valve housing 1, the inside and outside of the can body 5 are shut off at the circumferential surface of the lower flange 22, so that the valve stem is in the non-operating state. is maintained. The effects of this invention will be explained below with reference to FIG. Note that although FIG. 2 shows the operating position of the first embodiment, the operation and effect are the same as those of the second embodiment, so the illustration of the operating position of the second embodiment is omitted. That is, although the upper collar 21 and the lower collar 22 formed at the lower part of the valve stem 2 are tightly inserted into the shaft hole of the valve housing 1, the valve housing 1 is made of a soft elastic material, and the valve stem The settling ring 4 into which the upper part of the valve stem 2 is loosely inserted is fixed to the valve housing 1 by the mouth edge 52 formed by inwardly bending the can body 1, so that lateral pressure is applied to the push button 3 mounted on the valve stem 2. By applying pressure (indicated by an arrow) from an oblique direction, the valve stem 2 is tilted using the settling ring 4 as a lever. Note that, as described above, since the shaft hole of the settling ring 4 has a smaller diameter than the upper flange 21 of the valve stem, there is no fear that the valve stem 2 will slip out of the shaft hole of the valve housing 1.

In the process of tilting the valve stem 2 about the settling ring 4, a gap 26 is created between a part of the circumferential surface of the lower flange 22 and the shaft hole surface of the valve housing 1, so that the injected liquid under pressure flows between this gap. enters the circumferential groove 23 through the
The liquid is then discharged from the injection port 31 from the side hole 24 through the shaft hole 25 of the valve stem and the injection passage 32 of the push button connected thereto.

Incidentally, since the bottom surface of the lower flange 22 is simply seated on the shelf 12, the jetted liquid under pressure passes between the abutting surfaces of the seat and enters the gap 26.

When the push button 3 is released, the valve stem 2 returns to its original position due to the elasticity of the valve housing 1, and the lower collar 2
Since the adhesion between 2 and the shaft hole surface of the valve housing 1 is restored,
The inside and outside of the can body 5 are again shut off.

Hereinafter, regarding the illustrated embodiment, the valve housing 1
is a molded product of elastomer such as moderately vulcanized natural rubber or synthetic rubber. The valve stem 2 is preferably made of hard plastic, which is advantageous in terms of mass production and cost, but it may also be made of metal. As the settling ring 4, a metal washer can be used in the first embodiment, but
It can also be made of hard plastic. The settling ring 4 of the second embodiment is a hard plastic molding. Although an aluminum impact can is most suitable for the can body 5, an appropriate metal thin plate can be used for caulking the mouth rim 52. 6 is a well-known liquid suction pipe, but it is not necessary when the purpose is to use it upside down.

In the embodiment shown in FIG. 2, the settling ring 4 is provided with a cylindrical wall 41 rising from its top surface. A notch groove 42 is bored in a part of the cylinder wall 41,
Further, a small protrusion 43 is provided on the top edge of the cylinder wall 41.
On the other hand, in this embodiment, an annular groove 34 is bored in the bottom surface of the push button 3, as can be seen from FIG. ’) is shallow;
Most of the grooves are formed at a fairly deep depth (the bottom of the groove is marked 35), and the anterior part has a stripe 33.
is placed across. Therefore, this strip 3
3 is in a position corresponding to the notch groove 42 of the cylindrical wall 41 of the settling ring 4, that is, in the position shown in FIG. As the strip 33 is received, the valve stem 2 is tilted forward and the solution is injected as described above. On the other hand, when the push button 3 is rotated to the right or left, at a position not shown, the lower edge of the strip 33 engages with the top edge of the cylindrical wall 41 even when the push button 3 is pressed, so that the valve stem 2 forward tilting motion is not possible and therefore cannot be injected. That is, the structure of the cylindrical wall 41 with the notched groove 42 of the settling ring 4 and the annular groove 34 provided with the stripe 33 of the push button 3 is as follows.
This is a device to prevent accidental injection when not in use. The small protrusion 43 on the cylinder wall 41 is a stopper for the strip 33 and is intended to prevent the push button 3 from rotating more than necessary. The position of the strip 33 is indicated by 33'.

(Effects of the invention) Thus, according to this invention, the injection container is composed of only five parts: the valve housing 1, the valve stem 2, the push button 3, the settling ring 4, and the can body 5. Not only can each of these parts be produced by a simple molding process, but there is no need to use seals to assemble them; instead, they can be assembled simply by inwardly bending the rim of the can body. Since the assembly is completed, the cause of defective products is minimized, making it possible to provide an aerosol injection container with extremely low production costs.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional view of the first embodiment of this device in the inoperative position, Fig. 2 is a longitudinal sectional view of the first embodiment in the operative position, and Fig. 3 is a longitudinal sectional view of the second embodiment in the inoperative position. 4 is a cross-sectional view taken along line XX in FIG. 3, FIG. 5 is a plan view of the settling ring of the second embodiment, and FIG. 6 is a half-cut vertical sectional view of the settling ring. 1 is a valve housing, 11 is a collar, 12 is a shelf, 2 is a valve stem, 21 is an upper collar, 22 is a lower collar, 23
is a circumferential groove, 24 is a side hole, 25 is a shaft hole, 26 is a gap,
3 is a push button, 31 is an injection port, 32 is an injection passage,
33 is a stripe, 34 is an annular groove, 35 is the bottom of the groove, 4 is a settling ring, 41 is a cylinder wall, 42 is a notched groove, 43
5 is a small protrusion, 5 is a can body, 51 is a constriction, 52 is a mouth edge, and 6 is a liquid suction pipe.

Claims (1)

[Scope of utility model registration request] A valve casing 1 has a stepped shelf 12 formed in the shaft hole of a thick-walled cylindrical soft elastic body having a flange 11, and an upper flange 21 and a lower flange 22 with a circumferential groove 23 bored in the lower part.
The valve stem 2 is formed with a bottomed shaft hole 25 which is connected to the circumferential groove 23 through a side hole 24.
A push button 3 having an injection passage connected to the injection port 31, a settling ring 4 having an axial hole smaller in diameter than the upper flange 21, and a cylindrical can body 5 having an annular constriction 51 formed therein. The upper flange 21 and the lower flange 22 of the valve stem are tightly inserted into the shaft hole of the valve housing 1, the bottom surface of the lower flange 22 is seated on the stepped shelf 12, and the upper part of the valve stem 2 is set at the setting 4. The flange portion 11 of the valve housing is compressed by the neck portion 51 and the mouth rim portion 52 of the can body, which is loosely inserted into the can body and bent inwards, through the settling ring 4. The aerosol injection can is formed by tightly fitting and fixing the push button 3 to the valve stem 2 and connecting the injection passage 32 to the shaft hole 25 of the valve stem.