JPS5917825Y2 - Aerosol valve for refilling - Google Patents

Description

[Detailed description of the invention] The present invention relates to a refilling aerosol valve that can be used by refilling the aerosol contents from a parent container to a small container. However, in the case where the gas phase passage during refilling and the liquid passage during injection use are shared, if the outlet part is set to the optimal diameter for discharging the content liquid, the gas phase during refilling can be improved. When used as a passageway, the amount of gas phase discharged is too large and the propellant in the aerosol contents is discharged, resulting in a pressure drop, or a large amount of air bubbles may be created in the refill container during refilling, making it difficult to refill the contents. On the other hand, if the shared outlet portion is made small in diameter, it has the disadvantage of clogging when the content liquid is discharged.

There were some systems that formed separate gas-phase passages for refilling and liquid passages for injection, but this not only complicated the configuration, but also required the diameter of the gas-phase passages to optimize the gas-phase flow rate. It was technically difficult to make it small.

The present invention eliminates the above-mentioned drawbacks, and can reduce the amount of gas phase flowing out during refilling to the necessary minimum without causing any difficulties in construction, and also has sufficient content when using injection. It has a large amount of liquid to be drawn out, and is designed to be able to draw out gas and liquid in the best possible manner both during refilling and during injection use, without causing any difficulty in machining.

An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a mountain cup fixed to the upper end of a refill container 2, and the upper end of a housing 3 is fixed via a gasket 4.

Reference numeral 5 denotes a stem whose lower end is inserted into the housing 3, and is urged outward by a spring 6.

Reference numeral 7 denotes a liquid introduction path provided in the vertical direction from an engaging protrusion 8 protruding from the upper end of the stem 5. When refilling the liquid, it communicates with the filling stem 9 of the parent container to transfer the liquid to the refill container 2. to be introduced within.

Reference numeral 11 denotes the other gasket which normally blocks communication between the introduction passage 7 and the inside of the refill container 2, and is an annular wall of the housing 3 formed protruding in the gap between the communication port 12 communicating with the inside of the refill container 2 and the introduction passage 7. 13 against the surface of the other gasket 11, the communication between the inside of the refill container 2 and the introduction path 7 is cut off, and when the stem 5 is pressed, the contact between the other gasket 11 and the annular wall 13 is released, and the inside of the refill container 2 is and the introduction path 7 are communicated with each other.

Reference numeral 14 denotes a gas-liquid outlet path formed in the vertical direction of the stem 5 so as not to communicate with the introduction path 7, and having an opening 15 at the upper end located inside the engaging protrusion 8;
The end surface 1 of the other gasket 11 is normally in communication with the dip tube 17 connected to the end of the gasket 17 via the connecting tube 16.
The stem 5 is blocked by being closed by the stem 5.
When pressed, the other gasket 11 is released and communicated with the inside of the refill container 2.

19 is a connecting cylinder 16 for fixing the dip tube 17.
Like the gas-liquid outlet passage 14, it functions as a passage for discharging the liquid content when the liquid is injected, and serves as a passage for discharging the gas phase inside the refill container 2 during refilling in an inverted state. The dip tube 17 communicates with the inside of the refill container 2 at the bottom of the refill container 2 in an upright state.
The communication port 21 is located at the bottom of the refill container 2 in an inverted state, and the outlet hole 2 communicates with the inside of the housing 3.
2, and a tapered valve seat 23 is provided on the outlet portion 19 side of the outlet hole 22.

Reference numeral 24 denotes a movable piece installed in the lead-out portion 19 so as to protrude from the tapered valve seat 23 when refilling the refill container 2 in an inverted state. It is attached so that it can move with it.

Therefore, the shapes of the contact portions of the movable piece 24 and the valve seat 23 do not completely match, and a gap is formed due to the mismatch in shape, so that the movable piece 24 hits the valve seat 23. Even in such a case, the outlet hole 22 is not completely closed, and is formed to provide an optimum gas phase discharge gap during refilling.

This shape discrepancy is not specific to the shape and can be caused by a variety of reasons, as long as the outlet hole 22 is not sealed and a gas phase discharge gap is formed when the movable piece 24 hits the valve seat 23. However, if we explain one example in each of the embodiments shown in FIGS. 3 to 6, in FIG. This prevents the bridge 24 and the valve seat 23 from coming into close contact.

Also, in Fig. 4, a plurality of thin grooves 20 are formed in the valve seat 23.
The gas phase is drawn out from the groove 20 in a state in which the movable piece 24 hits the groove.

In addition, in FIG. 5, a straight groove 2 larger than the above-mentioned groove 20 is shown.
5 makes it possible to extract the gas phase when the movable piece 24 is in contact with the valve seat 23.

Further, in FIG. 6, the valve seat 23 is constructed from eight flat surfaces 31 to prevent the entire surface from coming into close contact with the movable piece 24.

Furthermore, the shape of the movable piece 24 is not particularly specified; in the first embodiment shown in FIGS. 1 and 2, a sphere is used for the movable piece 24, and in other different embodiments, it is a cylinder as shown in FIG. Part 2
Conical portions 27 and 28 are formed at both ends of 6.

In yet another embodiment, as shown in FIG. 8, the cylindrical portion 26 may be removed and the bottoms of the conical bodies 29 and 30 may be connected.

Furthermore, in another embodiment, the valve seat 23 is not formed in a tapered shape, but the right-angled end of the outlet hole 22 on the outlet part 19 side is the valve seat 23, as shown in FIG. The valve seat 23 or the entire outlet hole 22 is made into an irregularly deformed circle having a straight portion 37 and an arcuate portion 38 as shown in FIG. The exhaust passage may be formed by making the shapes mismatched and creating a gap.

Further, in the above embodiment, the valve seat 23 is formed in the shape shown in FIG. 6 or 9 from FIG. Formed into a movable piece 2
Even if a mismatch in shape is caused by providing the same structure as that formed on the valve seat 23 to the abutting portion of the valve seat 23 of No. 4 to the valve seat 23, the effect is exactly the same.

Reference numeral 32 denotes a push button fitted to the upper end of the stem 5 so as to close the outer end of the introduction passage 7 by means of a closing part 33, and the content led out from the gas-liquid outlet passage 14 is ejected from the nozzle 35 through the communication passage 34.

To carry out refilling in a device constructed as described above, the refill container 2 is placed in an inverted position as shown in FIG. When pressed, the one gasket 4 and the other gasket 11 are pressed and deformed to open the introduction path 7 and fill the refill container 2 with the liquid content, and at the same time, the liquid is discharged from the dip tube 17 through the lead-out portion 19. The gas phase in the refill container 2 is discharged to the outside from the gas-liquid outlet path 14 through the outlet hole 22 and the inside of the housing 3.

This discharge is performed with the movable piece 24 abutting against the valve seat 23 and a gap formed at the contact point between the two due to the mismatch in shape between the two, so the gas phase discharge passage is adjusted to the minimum necessary and the injection in the liquid content is carried out. The best filling effect can be obtained without unnecessary discharge of the agent.

When the content liquid is spouted out, connect the push button 32 to the stem 5 in the upright position as shown in FIG. The liquid is injected from the nozzle 35 of the push button 32 via the gas-liquid outlet path 14.

In this case, the movable piece 24 moves toward the dip tube 17 within the outlet portion 19 and is separated from the valve seat 23, so that the outlet hole 22 can be opened sufficiently for draining the content liquid.

Furthermore, the movable piece 24 located on the side of the dip tube 17 is pushed upward by the jetting pressure of the liquid content, and does not obstruct the discharge of the liquid content in any way.

As mentioned above, the present invention limits the discharge of the gas phase to the necessary minimum during refilling, and when the content liquid is ejected, the outlet hole is opened to allow a sufficient amount of content liquid to be ejected, thereby eliminating unnecessary discharge of propellant. There is no pressure drop caused by the liquid, no filling failure of the liquid inside, and no special accuracy is required in the work.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is a sectional view showing the content injection state, FIG. 2 is a sectional view showing the refilling state, and FIGS. 3 to 6 are sectional views of the valve seat. FIG. 1 is a partial sectional view taken along the line A-A in FIG. 1 showing different embodiments, FIGS. 7 and 8 are front views showing different embodiments of the movable piece, and FIG. 9 is a diagram showing another different embodiment of the valve seat portion. A partial cross-sectional view, FIG. 10, shows the shape of the end face of the valve seat.

Claims (1)

[Scope of utility model registration request] When the refill container is in an upright position, the movable piece is moved to a discharge part that acts as a liquid discharge passage when the liquid is injected, and when the refill container is in an inverted position and is refilled, it functions as a gas phase discharge passage within the refill container. A communication port is provided at the bottom of the outlet section when the refill container is in an upright state to communicate with the inside of the refill container. A lead-out hole is provided, and a valve seat is provided on the lead-out side of the lead-out hole, against which the movable piece hits during refilling, and a gap is formed at the contact area between the valve seat and the movable piece based on the mismatch in shape between the two. An aerosol valve for refilling featuring the following.