JPH0353704Y2 - - Google Patents

Description

[Detailed description of the invention] (Purpose of the invention) This invention is a part of the structure of an aerosol container, and relates to a device for pressure filling an aerosol container, and provides a means for rapidly filling the aerosol container with pressure. The purpose is to

(Structure of the invention) This invention will be explained below with reference to the illustrated embodiment. Reference numeral 1 denotes a collar of the valve housing 3 that is provided around the valve housing 3 of the injection valve. 4 is an annular gasket which is the valve body of the injection valve. Reference numeral 2 denotes a lid that fits onto the collar 1 and is tightly attached to it by an appropriate method such as welding.
This device has the collar 1, the gasket 4, and the lid 2 as described above. The collar 1 also forms an annular top surface 11 located lower than the top edge 31 of the valve housing adjacent to the top of the valve housing 2, and a wide passage 12 extends through the top surface 11. . The gasket 4 engages the top edge 31 of the valve housing approximately halfway across the width of the ring. The lid body 2 has a large number of vertical grooves 21 formed on the inner circumferential surface opposite to the outer circumferential surface of the gasket 4. This invention further comprises fixing the collar 1 or the lid 2 to the container wall 6 of the aerosol container via a leak-preventing gasket 5.

The first embodiment of this invention is shown in Figures 1 to 3, in which the collar 1 protruding from the valve housing 3 widens downward, while the lid 2 is somewhat crown-shaped.
The stepped inner circumferential surface fits tightly into the corresponding stepped outer circumferential surface of the collar 1. The leakage prevention gasket 5 is an O-ring and is located between the lowermost stage of the outer peripheral surface of the collar 1 and the lower edge of the collar 1, and the collar 1 is firmly supported on the container wall 6 via the leakage prevention gasket 5. ing.

The second embodiment of this invention is shown in the left half of each of FIGS. 4 to 6, and the collar 1 is cylindrical with a relatively small diameter. The edge of the crown-shaped lid body 2 extends downward almost to the lower edge of the collar 1, and its inner circumferential surface fits tightly into the outer circumferential surface of the collar 1. A leak-preventing gasket 5 made of an O-ring is accommodated in a circumferential groove provided in the lid 2, and the lid 2 is fixedly supported on the container wall 6 via the leak-preventing gasket 5.

The third embodiment of this invention is depicted in the right half of each of FIGS. 4 to 6, and the shape of the collar 1 is almost the same as that of the second embodiment, but the passage 12 is It is not hole-shaped like the first and second embodiments, but has a notched groove shape open on the outer periphery. The leakage prevention gasket 5 has an annular angle and is inserted between the step formed at the annular corner of the lid body 2 and the annular corner of the container wall 6, and the lid body 2 is connected to the container wall through the gasket 5. 6
It is firmly supported.

A fourth embodiment of the invention is shown in FIGS. 7 to 9, in which the collar 1 rises upward from the annular top surface 11 and widens. The lid body 2 has a slightly crown-like shape, but its outer diameter is smaller than the outer diameter of the collar 1, and the outer peripheral surface of the lid body 2 fits tightly into the inner peripheral surface of the raised portion of the collar 1, It is fixedly supported on the container wall 6 via a leak-preventing gasket 5 fitted to the circumferential surface of the lower portion of the lid 2.

In addition, in the illustration, the code 7 is the valve rod of the injection valve, and 8 is the valve rod of the injection valve.
9 is a valve spring, and 9 is a liquid suction pipe.

Since this device is constructed as described above, when filling an aerosol container, a filling nozzle (not shown) with a gasket attached to its tip is brought into close contact with the top of the container wall 6, and the axis of the lid body 2 is Injection begins at hole 22. The annular lid body 2 is closely engaged with the top edge 31 of the valve housing via the gasket 4, but since the top edge 31 is thin, the width of the pressure contact between the lower surface of the lid body 2 and the gasket 4 is small. Therefore, the injection liquid under high pressure easily overcomes the elasticity locally acting on the gasket 4 and enters the outer peripheral surface of the gasket 4 through the gap created between the lid 2 and the gasket 4. A large number of vertical grooves 21 are formed on the inner circumferential surface of the lid body 2 facing the outer circumferential surface of the gasket 4, while a groove 21 is formed in the collar 1 adjacent to the top of the valve housing 2 and lower than the top edge 31 of the valve housing. A top surface 11 is formed, and the top surface 11 is
Since a wide passageway 12 is provided through the cap body 12, the injection liquid entering through the gap created between the cap body 2 and the gasket 4 as described above will flow through the vertical groove 2 of the cap body 12.
1. It falls into the container through the gap between the top surface 11 of the collar 1 and the gasket 4 and the passage 12 of the collar. As the center of the gasket 4 deforms downward due to the pressure of the injected liquid, the injection valve also opens, and the liquid is injected through this injection valve and the liquid suction pipe 9. However, since the cross-sectional area of the valve hole 71 of the injection valve is extremely small, The proportion of injection from the injection valve is small, and most of it is in the passage 12.
It is injected through the As mentioned above, since the gasket 4 engages with the narrow top edge 31 at approximately the middle of the ring, after filling is completed, the entire gasket is pressed against the lid 2 by the internal pressure of the container, and the lid is closed. There is no risk of liquid leaking between the gasket 2 and the gasket 4.

(Effects of the invention) Thus, according to this invention, the injection liquid is injected from the pressure contact range over the entire circumference of the lid body 2 and the gasket 4 through wide passages such as the vertical groove 21 and the passage 12, so that the injection liquid is rapidly filled into the container. filling is completed, and is therefore extremely effective in shortening the manufacturing time of aerosol containers.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of the first embodiment of this invention, Fig. 2 is a bottom view of the lid, Fig. 3 is a plan view of the valve housing and brim, and Fig. 4 is a second embodiment with the shaft cut in half. FIG. 5 is a longitudinal sectional view of the lid, FIG. 6 is a plan view of the valve casing and brim, and FIG. 7 is a longitudinal sectional view of the fourth embodiment. FIG. 8 is a partial vertical cross-sectional view of the lid body, and FIG. 9 is a plan view of the valve housing and collar. 1...Brim, 11...Top surface, 12...Passway, 2
... Lid body, 22 ... Shaft hole, 3 ... Valve housing, 31 ...
Top edge, 4... Gasket, 5... Leak prevention gasket, 6... Container wall, 7... Valve rod, 8... Valve spring, 9... Liquid suction pipe.

Claims (1)

[Scope of utility model registration request] Valve housing 3 protruding around the valve housing 3 of the injection valve
a collar 1, an annular gasket 4 which is the valve body of the injection valve, and an annular gasket 4 that fits tightly into the collar 1 and tightly engages with the thin annular top edge 31 of the valve housing 3 via the gasket 4. The collar 1 has an annular top surface 11 located lower than the top edge 31 of the valve housing adjacent to the top of the valve housing 2, and a wide passage 12 extends from the top surface 11 through the lid body 2. Gasket 4
is engaged with the top edge 31 of the valve housing at approximately the middle of the width of the ring, and the lid body 2 has a large number of vertical grooves 21 formed on the inner circumferential surface opposite to the outer circumferential surface of the gasket 4. , a pressure filling device for an aerosol container, in which a collar 1 or a lid 2 is fixed to a container wall 6 of the aerosol container via a leak-preventing gasket 5.