JP7441139B2 - Discharge device - Google Patents

Description

The present invention relates to a dispensing device in which a dispensing member is detachably attached to a pressurized product filled with a stock solution and a pressurizing agent in a container, and in particular, a dispensing device that suppresses spouting of the stock solution when the dispensing member is removed from the pressurized product. Regarding equipment.

Patent Document 1 discloses a discharge device in which a valve is detachably attached to a pressurized product in which a container is filled with a stock solution and a pressurizing agent. In this dispensing device, when the stock solution of the pressurized product runs out, the valve can be removed from the pressurized product and replaced with a new pressurized product.

JP2020-083365A

By the way, in cases where a container is wrapped around it, it may be difficult to accurately determine the remaining amount of the stock solution. If you try to remove the valve with the stock solution remaining, there is a risk that the stock solution will spray out due to the pressure of the pressurizing agent. In particular, when the valve is fixed with a cap as in Patent Document 1, as the cap is loosened, the gaps between each member from the valve to the outside become larger, and the undiluted solution reaches the outside through this gap. It becomes easier.

Therefore, the technical object of the present invention is to provide a discharge device that can suppress the spouting of the stock solution when the valve is removed.

Discharge devices 10, 10A, 10B, 10C of the present invention include a pressurized product 11a filled with a stock solution C and a pressurizing agent P in a container 11, and a discharge member 12 attached to the pressurized product 11a, The container 11 includes a container body 16 and a lid 15 that closes the container body 16, the lid 15 includes a fitting cylinder portion 15a1 that communicates with the inside of the container body 16, and the discharge member 12 includes a fitting cylinder portion 15a1 that communicates with the inside of the container body 16. 15a1, and a cap 20 that removably engages with the container 11 and covers the valve 21 and the lid 15. By moving the valve in the direction of pulling out from the fitting cylinder part 15a1, a communication line is formed from the spout O of the stock solution C formed between the valve 21 and the fitting cylinder part 15a1 to the engagement part between the container 11 and the cap 20. It is characterized by comprising a passage W and a shielding means S that makes the flow area of the communication passage W substantially unchanged even if the valve 21 is moved until the outlet O is formed.

It is preferable that the shielding means S continues to surround the fitting cylinder portion 15a1 even when the valve 21 is moved until the outlet O is formed.

The valve 21 includes a housing 24 inserted into the fitting cylindrical portion 15a1 and a valve holder 18 located above the housing 24, and the shielding means S hangs down from the valve holder 18 until the spout O is formed. It is preferable to include a shielding wall 18e that continues to surround the fitting cylinder portion 15a1 even when the valve 21 is moved.

The lid body 15 further includes a sealing part 15a provided so as to surround the fitting cylinder part 15a1, and an insertion space IS is formed inside the sealing part 15a into which the shielding means S can be inserted. preferable.

The valve 21 includes a housing 24 inserted into the cylindrical fitting portion 15a1 and a valve holder 18 located above the housing 24, and the lid 15 is a seal provided to surround the cylindrical fitting portion 15a1. The valve holder 18 further includes a stop part 15a, the valve holder 18 includes a valve holding part 18a that fits over the upper part of the housing 24, and the shielding means S extends from the valve holding part 18a so as to be separated from the housing 24, It is preferable that the shielding part 18f is located within the sealing part 15a even if the valve 21 is moved until O is formed.

The lid body 15 further includes a sealing part 15a provided to surround the periphery of the fitting cylinder part 15a1, and a flange 15b provided on the outer periphery of the sealing part 15a and abutting against the container body 16, and the flange 15b and the cap It is preferable that a shielding means S is provided between the device and the device 20. In this case, it is preferable that the shielding means S is made of a liquid-absorbing material.

It is preferable to include a reservoir R for storing the stock solution C shielded by the shielding means S.

The dispensing device of the present invention includes a shielding means that makes the flow area of the communication passage substantially unchanged even if the valve is moved until the spout is formed, so that the engagement portion between the container and the cap is It is possible to prevent the undiluted solution from spewing out to the outside.

If the shielding means continues to surround the fitting cylinder even when the valve is moved until the spout is formed, the stock solution spouted from between the valve and the fitting cylinder can be made to collide with the shielding means.

The valve includes a housing that is inserted into the fitting cylinder portion and a valve holder located above the housing, and the shielding means hangs down from the valve holder and the fitting is performed even when the valve is moved until a spout is formed. In the case of a shielding wall that continues to surround the cylindrical portion, the stock solution spouted from between the valve and the fitting cylindrical portion can be dropped downward.

When the lid body further includes a sealing part provided so as to surround the fitting cylinder part, and an insertion space into which the shielding means can be inserted is formed inside the sealing part, the shielding means is provided over a wide range. This makes it possible to further suppress the undiluted solution from reaching the engaging portion between the container and the cap.

The valve includes a housing that is inserted into the fitting cylinder part, and a valve holder located above the housing, and the lid body further includes a sealing part provided so as to surround the fitting cylinder part, The holder includes a valve retaining portion that fits over the upper portion of the housing, and the shielding means extends from the valve retaining portion away from the housing so that the valve does not remain inside the sealing portion even when the valve is moved until a spout is formed. Even in the case where the shielding part is located at , the stock solution spouted from between the valve and the fitting cylinder part can be dropped downward.

The lid body further includes a sealing part provided so as to surround the periphery of the fitting cylinder part, and a flange provided on the outer periphery of the sealing part and abutting against the container body, and a shielding means is provided between the flange and the cap. Even when provided, spouting of the stock solution to the outside from the engagement portion between the container and the cap can be suppressed.

When the shielding means is made of a liquid-absorbing material, it can absorb the spouted undiluted solution.

When a storage section for storing the stock solution shielded by the shielding means is provided, leakage of the stock solution from the engagement part between the container and the cap can be suppressed.

FIG. 1A is a sectional view of a dispensing device of the present invention, and FIG. 1B is a sectional view of a container body used in the dispensing device. FIG. 2A is a sectional view of a main part of the discharge member of FIG. 1A, and FIG. 2B is a sectional view of a main part of a pressurized product. FIG. 3A is a cross-sectional view of a main part of the discharge device before opening, and FIG. 3B is a cross-sectional view of a main part of the discharge device after opening. FIG. 3 is a cross-sectional view of the main parts of the discharge device showing a state in which the cap is loosened. FIG. 7 is a sectional view of a main part of another discharge device of the present invention, showing a state in which the cap is loosened. FIG. 7 is a sectional view of a main part of another discharge device of the present invention, showing a state in which the cap is loosened. FIG. 7B is a cross-sectional view of a main part of still another discharge device of the present invention, in which FIG. 7A shows a state in which the cap is loosened, and FIG. 7B shows a state in which the cap is loosened.

A discharge device 10 shown in FIG. 1A includes a double pressurized container (container) 11, a discharge member 12, a stock solution (content) C and a pressurizing agent P filled in the double pressurized container 11. A pressurized product 11a is a double pressurized container 11 filled with a stock solution C and a pressurizing agent P. The pressurized product 11a and the discharge member 12 are sold as an unassembled set (see FIG. 1A) or in a half-assembled, unopened state. The pressurized product 11a is not only sold together with the discharge member 12, but also sold alone as a replacement. Therefore, the pressurized product 11a is sealed so that the filled stock solution C and the pressurizing agent P do not leak out until the discharge member 12 is attached (until it is unsealed by the discharge member 12). The discharge member 12 may also be sold separately.

The double pressurized container 11 includes an outer container 13, a flexible inner container 14 housed inside the outer container 13, and a lid (sealing board) 15 that seals the outer container 13 and the inner container 14. Consisting of There are no valves or pumps. The combination of the outer container 13 and the inner container 14 is a container body 16 (see FIG. 1B). The inside of the inner container 14 is a stock solution storage chamber Sc filled with the stock solution C, and the space between the outer container 13 and the inner container 14 is a pressurizing agent storage chamber Sp filled with the pressurizing agent P. They are sealed by a lid 15. That is, this double pressurized container 11 separately stores the stock solution C and the propellant P, and enables only the stock solution C to be discharged, thereby preventing leakage of the pressurizing agent P such as compressed gas.

As shown in FIG. 1B, the outer container 13 includes a bottom portion 13a, a cylindrical body portion 13b, a shoulder portion 13c, and a cylindrical neck portion 13d. A male thread 13e is formed on the outer periphery of the neck portion 13d. The upper end surface 13f of the neck portion 13d is made substantially flat so that the lid 15 can be fixed thereto. In this embodiment, the bottom portion 13a of the outer container 13 includes a downwardly projecting annular ground surface 13a1 and an upwardly projecting dome portion 13a2 provided at the center thereof. This improves pressure resistance and impact resistance when dropped. Therefore, it is safe even when distributed individually or delivered by courier. Further, since it has the ground plane 13a1, it can be stably placed on a flat table or the like. However, the bottom surface may be spherical.

As shown in FIG. 2B, the upper end surface 13f of the neck 13d of the outer container 13 is made to be integrated with the lid 15 by increasing the contact pressure with the lid 15 during ultrasonic welding to facilitate melting. An annular projection 13g is formed to form a welded portion for the purpose. The annular protrusion may be provided on the lid 15 side, or may be provided on both sides. An annular support portion 13d1 is provided on the outer periphery of the neck portion 13d of the outer container 13 to suspend it during transportation or welding.

Returning to FIG. 1B, like the outer container 13, the inner container 14 also includes a bottom portion 14a, a body portion 14b, a shoulder portion 14c, and a neck portion 14d. The bottom 14a of the inner container 14 is also formed with a downwardly projecting annular recess 14a1 and an upwardly projecting dome 14a2 provided at the center thereof. This bottom portion 14a is in contact with the bottom portion 13a of the outer container 13, and is supported so that the inner container 14 does not fall down when filling the pressurizing agent or fixing the lid 15. As shown in FIG. 2B, the neck portion 14d includes a cylindrical upper portion 14d1, a tapered portion 14d2 that tapers downward from the upper portion 14d1, and a hanging portion 14d3 that extends downward from the lower end thereof. The lower end of the hanging portion 14d3 is continuous with the shoulder portion 14c. That is, the tapered part 14d2 of the neck part 14d of the inner container 14, the hanging part 14d3, and the upper part of the shoulder part 14c form a constricted part. Note that this constricted portion has a shape that is substantially in close contact with the outer circumferential surface of a sealing portion 15a of the lid 15, which will be described later. Therefore, when the internal container 14 is filled with the stock solution C, the gas phase portion (head space) becomes small. There is a slight gap between the outer surface of the upper portion 14d1 and the inner surface of the neck portion 13d of the outer container 13. The inner surface of the upper portion 14d1 is a smooth cylindrical surface.

The upper end surface 14e of the neck portion 14d of the inner container 14 protrudes from the upper end surface 13f of the outer container 13, and a flange 14f that engages with the upper end surface 13f of the outer container 13 is formed at the projecting portion. The thickness (radial dimension) of the flange 14f is about 1/3 to 1/2 of the thickness of the neck 13d of the outer container 13. Therefore, when the flange 14f is engaged with the upper end surface 13f of the neck portion 13d of the outer container 13, the outer portion of the upper end surface 13f of the neck portion 13d of the outer container 13 remains uncovered. The annular projection 13g at the upper end of the external container 13 is provided on the outer side thereof. An annular projection 14g is also formed on the upper end surface 14e of the neck 14d of the inner container 14 to increase the contact pressure with the lid 15 during ultrasonic welding and create a welded part with the lid 15. .

On the lower surface of the flange 14f of the inner container 14, radially extending lateral grooves 14h for filling the pressurizing agent are formed at four equal intervals. Further, a vertical groove 14i is formed on the outer circumferential surface of the neck 14d of the inner container 14 and communicates with the horizontal groove 14h. The vertical groove 14i is provided in the upper part 14d1, and makes it easy to fill the pressurizing agent P into the pressurizing agent storage chamber Sp.

Both the outer container 13 and the inner container 14 are made of thermoplastic resin such as polyethylene terephthalate, polyethylene naphthalate, polyethylene, and polypropylene. These can be manufactured by, for example, inserting a preform for the inner container into a preform for the outer container and simultaneously blow molding the lower ends of the necks 13d and 14d. Particularly preferred is an injection blow molding method in which a preform of a predetermined shape is injection molded and then blow molded. In addition, by pushing the bottom portion 13a upward when forming the dome portion 13a2, the annular recessed portion 14a1 of the inner container can be stretched to increase its strength, and the weight can be reduced.

The lid 15 includes a substantially cylindrical sealing part 15a inserted into the neck 14d of the inner container 14, and an annular flange 15b continuous to the upper end thereof. A fitting cylinder portion 15a1 is provided concentrically inside the sealing portion 15a. The fitting cylinder portion 15a1 rises upward from the center of the bottom of the sealing portion 15a and is open at the upper end. The upper part of the sealing part 15a has a substantially cylindrical shape, and the lower part 15a3 has a tapered shape that becomes thinner toward the bottom. However, it may be cylindrical from the top to the bottom.

In this lid body 15, a lower end 15a4 of the lower part 15a3 and a lower end of the lower cylinder part 15a5 extending downward from the fitting cylinder part 15a1 are connected by a connecting part 15a6. Further, a bottom portion 15c is provided so as to close somewhat above the lower end of the lower cylindrical portion 15a5. Therefore, when ultrasonic welding is performed by pressing the horn against the upper surface of the lid 15, the vibrations of the horn tend to flow through the sealing part 15a and flowing from the lower end 15a4 to the stock solution C side. Furthermore, since the closing portion 15d, which will be described later, is located above the connecting portion 15a6, vibrations are less likely to be transmitted to the closing portion 15d. Therefore, melting and penetration of the line of weakness 15f, which will be described later, is prevented.

The bottom portion 15c is provided with a closing portion (unsealed portion) 15d that includes a pressure receiving portion 15d1 that is thicker than the surrounding area. The closing portion 15d is normally circular in plan view. However, other shapes such as a rectangle can also be used. The closing portion 15d is surrounded by a thin-walled portion (broken portion, line of weakness) 15f that is easily broken, such as an annular groove. The pressure receiving portion 15d1 is provided on substantially the entire upper surface of the closing portion 15d, and the thin wall portion 15f is formed on the upper surface of the bottom portion 15c. Note that the thin portion 15f may be formed on the lower surface. The thin portion 15f is formed of, for example, a V-groove. The thin portion 15f is continuous so that it can be torn off when the closing portion 15d is opened, but may be discontinuous as long as it can be broken. In order to prevent the closing portion 15d from falling off or coming loose after opening, a reinforcing portion may be provided that extends in the radial direction across the line of weakness 15f.

The outer circumferential surface of the sealing part 15a is connected to the inner surface of the neck part 14d of the inner container 14, so that the air inside the inner container 14 can be exhausted when the lid body 15 is attached to the neck part 14d of the inner container, and , it is preferable that the fitting state is such that the stock solution C in the inner container 14 can be sealed. Furthermore, the inner circumferential surface of the fitting cylinder portion 15a1 has a tapered shape that reduces in diameter downward so that it comes into close contact with the sealing member 28 of the valve 21 when the closing portion 15d is unsealed to prevent the stock solution C from leaking. . However, it may be cylindrical.

The flange 15b of the lid 15 is attached to the upper end surface 13f of the neck 13d of the outer container 13 and the neck 14d of the inner container 14 by welding such as ultrasonic welding, laser welding, or high frequency welding after filling with the stock solution C and the pressurizing agent P. It is welded to the upper end surface 14e and sealed. In this embodiment, an annular projection 14g is formed on the upper end surface 14e of the inner container 14, and an annular projection 13g is also formed on the upper end surface 13f of the outer container 13, so that the sealing after welding is reliable. Further, it may be bonded for the purpose of increasing airtightness.

The reason why the bottom part 15c of the fitting cylinder part 15a1 is provided slightly above the lower end of the fitting cylinder part 15a1 is to increase the rigidity of the bottom part 15c and to make it easier to break the thin part 15f. Further, a reinforcing rib 15g is provided on the lower surface of the bottom portion 15c, specifically, so as to span the inner surface of the lower cylindrical portion 15a5 and the lower surface of the bottom portion 15c, thereby further increasing the rigidity of the bottom portion 15c and ensuring that the thin wall portion 15f does not break. It is also for the purpose of Note that the reinforcing ribs 15g are preferably provided at a plurality of locations at equal angles so as to surround the line of weakness 15f. The reason why the diameter of the fitting cylinder part 15a1 is made smaller than the diameter of the lower part 15a3 of the sealing part 15a is to improve the molding accuracy of the inner surface of the fitting cylinder part 15a1, and to surround it with the seal member 28 of the discharge member 12. This is to reduce the area receiving internal pressure and weaken the upward force applied to the lid 15. This is to ensure a space for accommodating the valve holding portion 18a that further projects downward. The connecting portion 15a6 at the lower end of the fitting cylindrical portion 15a1 may be cylindrical, but may be communicated with a lateral groove so that gas does not accumulate between the lower cylindrical portion 15a5 and the bottom portion 15c.

The flange 15b of the lid 15 includes an annular disk portion 17 that extends radially outward from the upper end of the sealing portion 15a, and an outer cylinder portion 17a that extends downward from the outer edge of the annular disk portion 17. The lower surface of the annular disk portion 17 is in contact with the upper end surface 14e of the neck portion 14d of the inner container 14 to form a welded portion and is sealed, and the lower surface of the outer cylinder portion 17a is the upper end surface 13f of the neck portion 13d of the outer container 13. This is the part that contacts and forms a weld and seals.

The material of the lid 15 is a thermoplastic resin that has high thermal bonding properties with the outer container 13 and the inner container 14, and it is preferable to use the same material as the outer container 13 and the inner container 14 in order to increase the welding strength. As shown in FIG. 1A, the lid 15 seals the stock solution storage chamber Sc and the pressurizing agent storage chamber Sp, and is fixed to either the inner container 14 or the outer container 13, or both, so that the contents ( Stock solution C and pressurizing agent P) can be stored safely for a long period of time without leaking. The thin wall portion 15f has a shape that has a sufficient sealing function when unopened and can be easily broken.

Undiluted solution C includes skin products and treatment agents such as facial cleansers, detergents, bath additives, moisturizers, cleansing agents, sunscreens, lotions, shaving agents, depilatory agents, antiperspirants, sterilizing agents, pest repellents, etc. , human products such as hair products such as styling products and hair dyes, foods such as whipped cream and olive oil, deodorants, air fresheners, insecticides, insect repellents, pollen removers, sterilizing disinfectants, cleaning agents, etc. These include household goods and industrial goods such as lubricants. However, it is not limited to these uses.

The pressurizing agent P is preferably a compressed gas such as nitrogen gas, compressed air, or carbon dioxide gas. It is preferable that the pressure in the double pressurized container 11 is set to 0.1 to 1.0 MPa (25° C., gauge pressure), particularly 0.3 to 0.8 MPa (25° C., gauge pressure) using a pressurizing agent. Further, the capacity of the external container 13 is preferably 30 to 500 ml. The capacity of the internal container (undiluted solution storage chamber Sc) 14 is preferably about 20 to 300 ml. The capacity of the pressurizing agent storage chamber Sp is preferably about 10 to 200 ml.

As described above, the double pressurized container 11 has a small number of parts and has no operating parts such as valves, so it can be manufactured at low cost. and safe when carried by consumers and delivered by distributors. Furthermore, even if the outer container 13 were to crack, only the pressurizing agent P would leak, but the stock solution C in the inner container 14 would not leak. Therefore, it is even safer.

Further, in this pressurized product 11a, the outer container 13 and the inner container 14 are made of synthetic resin, and the inner container 14 is surrounded by the pressurizing agent P and further surrounded by the outer container 13, so that the pressurized product 11a is It has high elasticity and does not break easily even if dropped. Furthermore, since the closing portion 15d is located inside, there is less risk of the closing portion 15d being accidentally broken, making it even safer.

As shown in FIG. 1A, the discharge member 12 includes a cap (installation part) 20 that is screwed into the external thread 13e of the neck 13d of the external container 13, a valve 21 covered by the cap 20, and a stem 22 of the valve 21. It consists of an operation button 23 equipped with a discharge nozzle, which is attached to the machine.

As shown in FIG. 2A, the cap 20 has a bottomed cylindrical shape and includes an upper base 20a. A female thread 20c is formed on the inner circumferential surface of the cap 20 and is screwed into the male thread 13e of the outer container 13. An opening 20b is formed in the center of the upper base 20a of the cap 20, through which the stem 22 and the base of the operation button 23 are passed. The cap 20 and the valve 21 without the operation button 23 are treated as a valve unit or a valve assembly.

Valve 21 is covered by cap 20. This valve 21 includes a bottomed cylindrical housing 24, the aforementioned stem 22 housed inside the housing 24 so as to be vertically movable, a spring 25 that biases the stem 22 upward, and a stem rubber 26. The valve holder 18 includes a cylindrical valve holding part 18a that holds the upper part of the housing 24, and constitutes a discharge passage for the stock solution C. The stem 22, the spring 25, and the stem rubber 26 constitute a valve mechanism B that switches between a discharge state and a non-discharge state of the stock solution C. This valve mechanism B is connected to a housing provided inside the housing 24. It is housed in the section 24a. The valve holder 18 covers the housing portion 24a and prevents the valve mechanism B from coming out of the housing 24.

An opening section 27 for opening the closing section 15d is provided at the lower end of the housing 24. The bottom surface 27a of the unsealing section 27 is made flat so as to come into contact with the top surface of the pressure receiving section 15d1. Further, the diameter is the same as or somewhat smaller than the diameter of the range surrounded by the thin portion 15f. Further, a sealing member 28 such as an O-ring is attached to the lower outer periphery of the housing 24. This sealing member 28 seals between the inner circumferential surface of the fitting cylindrical portion 15a1 of the lid 15 and the housing 24 during and after unsealing.

The housing 24 is provided with a vertical hole 24c that vertically penetrates the bottom plate 24b of the housing 24 as a passage that communicates the valve accommodating portion 24a inside the housing 24 with the stock solution storage chamber Sc inside the internal container 14. The planar shape of the vertical hole 24c can be, for example, approximately fan-shaped. It is preferable to provide a plurality of vertical holes 24c. Thereby, even if one vertical hole 24c is blocked, communication can be made through another vertical hole 24c.

The position in the height direction of the bottom surface 27a of the unsealing portion 27 is such that it comes into contact with the pressure receiving portion 15d1 when the cap 20 is screwed onto the male screw 13e of the outer container 13 about once or twice. Therefore, during shipping and distribution, the cap 20 can be loosely screwed together and the discharge member 12 and the double pressurized container 11 can be temporarily connected in a sealed state without breaking the closing part 15d (see FIG. 3A). ).

As shown in FIG. 2A, the valve holder 18 includes a valve holding portion 18a, an annular rubber presser 18b extending inward from the upper end of the valve holding portion 18a, and a flange 18c extending outward. A hole 18d through which the stem 22 passes is formed in the center.

A shielding wall 18e hangs down from the lower end of the valve holding portion 18a so as to surround the fitting cylinder portion 15a1. This shielding wall 18e has a substantially cylindrical shape and is provided integrally with the valve holder 18, but may be separate. If the shielding wall 18e is separate, it should be slidably connected to the valve holding part 18a (for example, fitted in a telescopic shape so that it can expand and contract), and then the discharge member 12 can be removed from the pressurized product 11a. In this case, the shielding wall 18e can continue to surround the fitting cylinder portion 15a1 for a long time. Further, it does not need to extend from the lower end of the valve holding portion 18a, and may extend from the lower surface of the flange 18c. The lower end of the shielding wall 18e is preferably located at the same height as the upper end of the fitting cylinder portion 15a1, or below it, when the seal by the seal member 28 is released. It is certain that it is located below the seal member 28. In this case, the seal member 28 can be protected while the discharge member 12 is removed from the pressurized product 11a.

Next, attachment of the discharge member 12 to the pressurized product 11a will be explained. When a user uses a purchased dispensing device 10, first screw the cap 20 onto the male thread 13e of the external container 13. As a result, the entire cap 20 and the valve 21 are lowered, and the bottom surface 27a of the opening section 27 pushes down the closing section 15d (pushing it downward). As a result, the thin portion 15f is broken, and the closing portion 15d is torn off from the fitting cylinder portion 15a1, separated from the bottom portion 15c, and falls off. The fallen closure part 15d falls to the bottom of the inner container 14. By falling off, the fitting cylinder portion 15a1 communicates with the stock solution storage chamber Sc in the container body 16 (see FIG. 3B).

Note that since the cap 20 is screwed onto the external container 13, the amount of descent of the valve 21 relative to the amount of operation of the cap 20 is small. Therefore, the bottom surface 27a of the opening section 27 gradually presses the pressure receiving section 15d1 of the closing section 15d. Since the lid body 15 is made of synthetic resin, when it is gradually pressed, the closing part 15d easily stretches due to its extensibility and is difficult to break. However, since the closing portion 15d is surrounded by the annular thin wall portion 15f and the pressure receiving portion 15d1 protrudes, the stress concentration on the thin wall portion 15f increases and it can be broken smoothly. Further, since the bottom surface 27a of the unsealing portion 27 is flat, it is not easily deformed by the unsealing operation, and the discharge member 12 can be used repeatedly.

The closing part 15d has a thick, approximately circular pressure receiving part 15d1 on the upper part, which is provided on the central axis of the lid 15, and is in contact with the circular bottom surface 27a of the opening part 27, so that the pressure is not applied by the bottom surface 27a. When pressed, the closing portion 15d is pushed straight in and breaks along the thin wall portion 15f, and the broken closing portion 15d falls off and falls to the bottom of the inner container 14. However, the pressure receiving portion 15d1 or the bottom surface 27a of the unsealing portion 27 may be inclined so that the thin portions 15f are sequentially broken from one side toward the other. Further, the closing portion 15d may not fall off and may remain connected via the thin portion 15f or the like.

When the closing part 15d is torn, the stock solution C may leak from the gap between the inner periphery of the bottom part 15c and the outer periphery of the opening part 27. However, since the space between the fitting cylindrical portion 15a1 and the housing 24 is sealed by the sealing member 28, the stock solution C remains within the fitting cylindrical portion 15a1 and does not leak to the outside. In addition, the reaction force at the time of rupture and the internal pressure after rupture act to push up the housing 24, but the cap 20 and the outer container 13 are screwed together, and the upper base 20a of the cap 20 and the valve holder 18 are Since the discharge member 12 is supported by the support member 1, the discharge member 12 is prevented from popping out. In this state, it can be said that the valve 21 is attached by the cap 20. Further, deformation of the upper base 20a of the cap 20 is suppressed.

When the cap 20 is completely attached to the double pressurized container 11 in this manner, the positional relationship of each member is as follows. When the discharge device 10 is viewed from above, the housing 24 is located at the innermost position, and the fitting cylinder portion 15a1 is located at the outer periphery of the housing 24. A shielding wall 18e is located on the outer periphery of the fitting cylinder portion 15a1. A sealing portion 15a is located on the outer periphery of the shielding wall 18e. Therefore, it can be said that the sealing part 15a is provided so as to surround the fitting cylinder part 15a1. Further, the flange 15b of the lid 15 and the flange 18c of the valve holder 18 are located on the outer periphery of the sealing part 15a, and the engaging part between the double pressurized container 11 and the cap 20 is located on the outer periphery of these flanges 15b and 18c. positioned.

Regarding the vertical positional relationship, the valve holder 18 is located above the housing 24. Note that the valve holding portion 18a of the valve holder 18 is externally fitted onto the upper part of the housing 24. The flange 15b of the lid body 15 is located below the flange 18c of the valve holder 18. An upper base 20a of the cap 20 is located above the flange 18c of the valve holder 18. Therefore, it can be said that the cap 20 covers the valve 21 and the lid body 15 from the outside. Further, the upper end of the fitting cylinder portion 15a1 is located below the upper end of the sealing portion 15a. The vertical position of the sealing member 28 is the position where a seal is formed when a part of the female thread 20c of the cap 20 is screwed into the male thread 13e of the outer container 13, in other words, when the cap 20 is removed from the outer container 13. , is the position where the seal is released while the screws remain engaged. Note that the seal is released when the seal member 28 approaches the seal release groove 15h provided on the inner circumferential surface of the fitting cylinder portion 15a1. Therefore, it can be said that the seal release groove 15h is provided so that the seal is released while the threaded engagement between the screws is maintained. However, it is not necessary to provide the seal release groove 15h. That is, the seal may be released when the seal member 28 approaches the upper end of the fitting cylinder portion 15a1.

There are gaps between each member (no seal is formed between each member) except when the housing 24 is inserted into the fitting cylinder part 15a1 and a seal is formed between the housing 24 and the fitting cylinder part 15a1. ), therefore, there is communication between the outer peripheral surface of the housing 24 and the outside of the discharge device 10.

When viewed from the center of the shield wall 18e, the shield wall 18e is located between the lid body 15 and the valve 21. Specifically, the shielding wall 18e is located between the sealing portion 15a of the lid 15 and the housing 24 of the valve 21. In this way, the inside of the sealing part 15a functions as an insertion space IS into which the shielding wall 18e can be inserted. Note that this insertion space IS also includes a space between the sealing part 15a and the fitting cylinder part 15a1. By providing the insertion space IS between the sealing part 15a and the fitting cylinder part 15a1 in this way, it becomes possible to position the lower end of the shielding means S below the sealing member 28.

After attaching the discharge member 12, when the user presses the operation button 23 attached to the stem 22, the stem 22 is lowered, the stem rubber 26 is bent, and the stem hole is opened. Since the stock solution C in the stock solution storage chamber Sc is pressurized by the pressurizing agent P via the internal container 14, it is discharged to the outside via the opening portion 27, the housing 24, the stem 22, and the operation button 23. When the operation button 23 is released, the stem 22 rises and the discharge stops. The pressurizing agent storage chamber Sp filled with the pressurizing agent P is closed by the lid 15 and does not communicate with the outside or the stock solution storage chamber Sc, so the pressurizing agent P will not leak to the outside during the discharge operation. There isn't.

The discharge member 12 is detachably attached to the container 11 of the pressurized product 11a by a cap 20, so after discharging the stock solution C, the discharge member 12 is removed from the pressurized product 11a and a new pressurized product is added. It can be attached to the pressure product 11a.

Removal can be easily performed by turning the cap 20 in the opposite direction to the screwing direction. When the cap 20 is turned, the cap 20 and the valve 21 rise as shown in FIG. 4, and the housing 24 is removed from the fitting cylinder portion 15a1. At this time, when the seal member 28 reaches the seal release groove 15h, the seal is released and a gap is created between the outer surface of the housing 24 of the valve 21 and the inner surface of the fitting cylinder portion 15a1. Here, if the undiluted solution C remains in the internal container 14, the undiluted solution C is under the pressure of the pressurizing agent P, so the gap becomes the outlet O for the undiluted solution C, and the undiluted solution C is forced diagonally. It may spray upward (see solid arrow in Figure 4). The release of the seal occurs when the screwing between the cap 20 and the external container 13 is not completely released (partially screwed together), so the stock solution C will not be squirted out as it is. However, since a communication path W is formed that communicates from the spout O to the threaded part that is the engagement part between the external container 13 and the cap 20, this spouted stock solution C can be screwed while maintaining its momentum. When moving towards the end, the undiluted solution C is vigorously spouted out from the gap between the cap 20 and the external container 13.

However, since the shielding wall 18e is provided between the sealing part 15a of the lid 15 and the housing 24 of the valve 21, the undiluted solution C spouted from between the housing 24 and the fitting cylinder part 15a1 is removed from the shielding wall 18e. collide with That is, when the cap 20 is removed from the double pressurized container 11, the shielding wall 18e prevents the undiluted solution C from spouting out from between the valve 21 and the fitting cylinder part 15a1 when the valve 21 is pulled out from the fitting cylinder part 15a1. It functions as a shielding means S that suppresses the contact between the double pressurized container 11 and the cap 20 from reaching the engaging portion. This effect becomes noticeable when the lower end of the shielding wall 18e is located at the same height as or lower than the upper end of the fitting cylinder portion 15a1 when the seal by the sealing member 28 is released. This is because even if the valve 21 is moved until the outlet O is formed, the flow area of the communication passage W remains substantially unchanged. That is, the flow path area between the inner surface of the shielding wall 18e and the outer surface of the fitting cylinder portion 15a1 (upstream of the engagement portion between the cap 20 and the container 11) does not change between before and after the seal is released. Therefore, it is possible to prevent the flow area of the communication path W from increasing due to loosening the cap 20, and it is possible to suppress a large amount of the stock solution C from reaching the engaging portion at once and spouting out to the outside. The effect of not changing the flow area of the communication path W is that as long as the shielding wall 18e continues to surround the fitting cylinder part 15a1, in other words, the lower end of the shielding wall 18e is lower than the upper end of the fitting cylinder part 15a1. This continues until you move up. Further, since the shielding wall 18e is provided like a hanging wall, the collided stock solution C remains in the insertion space IS located below the shielding wall 18e. That is, since the insertion space IS functions as a reservoir R for storing the stock solution C, there is no leakage to the outside from the engagement portion between the cap 20 and the external container 13. Further, since the outer circumferential surface of the housing 24 is communicated with the outside, the air inside the cap 20 can be released to the outside, and an increase in the pressure inside the cap 20 due to spouting of the stock solution C can be prevented. In particular, since the space between the outer surface of the shielding wall 18e and the inner surface of the sealing part 15a is open above the reservoir R, the reservoir R functions as a gas-liquid separator and releases only air to the outside. I can do it. Note that even if the undiluted solution C is discharged in an amount larger than the volume of the storage portion R, the force of the discharge can be suppressed because it collides with the shielding wall 18e.

FIG. 5 shows another discharge device 10A. In this discharge device 10A, the valve holding portion 18a functions as a shielding means S. Specifically, the lower end of the valve holding portion 18a is located below the seal member 28. Further, the outer circumferential surface of the valve holding portion 18a has substantially the same shape as the inner circumferential surface of the sealing portion 15a. Specifically, the upper part is approximately cylindrical, and the lower part 15a3 is approximately cylindrical, and the lower part is tapered downward to match the inner peripheral surface of the sealing part 15a. It has a tapered outer peripheral surface that becomes thinner towards the end. Furthermore, like the discharge device 10 of FIG. 1, the inner circumferential surface of the valve holding part 18a has substantially the same shape as the outer circumferential surface of the fitting cylinder part 15a1.

In the discharge device 10A having the above configuration, the gap between the outer circumferential surface of the valve holding part 18a and the inner circumferential surface of the sealing part 15a of the lid body 15 is substantially unchanged, and the inner circumferential surface of the valve holding part 18a is Since the gap between the joint tube portion 15a1 and the outer circumferential surface remains substantially unchanged, an increase in the flow area of the communication path W due to loosening the cap 20 can be prevented at two locations, and a large amount of the undiluted solution C can be poured at once. It is possible to prevent the liquid from reaching the engaging portion and spouting out to the outside.

Since the other configurations are the same as those of the discharging device 10 in FIG. 4, the same reference numerals are given and the description thereof will be omitted.

FIG. 6 shows another discharge device 10B. This discharge device 10B includes a shielding portion 18f as the shielding means S that extends from the valve holding portion 18a so as to be separated from the housing 24. The shielding part 18f extends in a tapered shape from the lower end of the valve holding part 18a so as to approach the sealing part 15a. Although this shielding portion 18f is provided integrally with the valve holder 18, it may be a separate body. Further, it may be extended in the horizontal direction and have a substantially disk shape. The lower end of the shielding part 18f is located at the same height as the upper end of the sealing part 15a, or below it, when the seal by the sealing member 28 is released (when the outlet O is formed).

As described above, by providing the shielding part 18f between the lid body 15 and the valve 21, the undiluted solution C spouted from between the housing 24 and the fitting cylinder part 15a1 is protected from the cap 20 and the external container 13. The passage to the engaging portion becomes narrower. Furthermore, even if the valve 21 is moved until the outlet O is formed, the flow area of the communication passage W remains substantially unchanged. Specifically, as long as the shielding part 18f is located within the sealing part 15a, the flow path area between the outer surface of the shielding part 18f and the inner surface of the sealing part 15a does not change. Moreover, since the shielding part 18f is located in the direction in which the stock solution C is mainly spouted diagonally upward, the stock solution C spouted from between the housing 24 and the fitting cylinder part 15a1 collides with the shielding part 18f and loses its momentum. In addition, since the shielding part 18f is provided like a hanging wall, the collided stock solution C remains in the insertion space IS located below the shielding part 18f, and exits from the engagement part between the cap 20 and the external container 13. There is no leakage. Further, since the outer circumferential surface of the housing 24 is communicated with the outside, the air inside the cap 20 can be released to the outside, and an increase in the pressure inside the cap 20 due to spouting of the stock solution C can be prevented.

Since the other configurations are the same as those of the discharging device 10 in FIG. 4, the same reference numerals are given and the description thereof will be omitted.

FIG. 7 shows yet another discharge device 10C. In this discharge device 10C, a shielding portion 29 is provided as the shielding means S between the flange 15b of the lid body 15 and the upper base 20a of the cap 20. More specifically, it is provided between the flange 15b of the lid 15 and the flange 18c of the valve holder 18. The shielding part 29 has a substantially annular shape in plan view, and is fitted onto the valve holding part 18a. This shielding portion 29 is made of a liquid-absorbing material and has liquid-absorbing properties. Moreover, it is preferable that the material has air permeability. It is also compressible and deformable, and when the cap 20 is attached to the pressurized product 11a, its volume is reduced as the cap 20 descends (see FIG. 7A). Such a shielding portion 29 is made of, for example, sponge (open cell synthetic resin foam, rubber foam), fibrous material (woven fabric, nonwoven fabric, felt, paper), or the like. Note that materials that do not have liquid absorbing properties but can be compressed and deformed such as synthetic rubber, silicone rubber, and elastomers may also be used. Furthermore, synthetic resin such as polyethylene terephthalate, polybutylene terephthalate, polyacetal, etc. may be used so that even if the cap 20 rises, it can remain placed on the upper surface of the flange 15b of the lid body.

By the way, the outer diameter of the valve holding part 18a is smaller than the inner diameter of the sealing part 15a, and there is a gap between the valve holding part 18a and the sealing part 15a for engagement between the cap 20 and the external container 13. The passage leading to the area is open. The passage passes between the flange 15b and the flange 18c and reaches the engagement portion between the cap 20 and the outer container 13. That is, a communication path W is formed. The shielding portion 29 is located between the flange 15b and the flange 18c so as to close the communication path W. In addition, since the shielding part 29 has the ability to return to its original size, it continues to fill the space between both flanges 15b and 18c even if the valve 21 is raised by turning the cap 20 (Fig. 7B). In other words, even if the valve 21 is moved until the outlet O is formed, the flow area of the communication path W remains substantially unchanged (the flow path is maintained without any gap between the flanges 15b and 18c). (The area remains zero). Therefore, when the seal between the housing 24 and the engaging cylinder part 15a is released, the stock solution C that is ejected from between the housing 24 and the engaging cylinder part 15a1 collides with the shielding part 29. The shielding part 29 is sandwiched between the flange 15b and the flange 18c in the vertical direction, and is surrounded by the valve holding part 18a and the inner peripheral surface of the cap 20 in the left-right direction, so that even if the concentrated liquid C collides with it, it will not be located. Hard to slip off. Further, the collided stock solution C is absorbed by the shielding part 29. Therefore, the reach of the stock solution C to the engagement portion between the cap 20 and the external container 13 is suppressed. Furthermore, if the shielding part 29 has air permeability, it can be said that if it is a gas, it communicates from the outer peripheral surface of the housing 24 to the outside of the discharge device 10C, so that the air inside the cap 20 cannot escape to the outside. This makes it possible to prevent the pressure inside the cap 20 from increasing due to the spouting of the stock solution C.

Since the other configurations are the same as those of the discharging device 10 in FIG. 4, the same reference numerals are given and the description thereof will be omitted.

Although preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and various modifications can be made within the scope of the invention. For example, although the shielding wall 18e and the shielding part 18f extend from the valve holder 18, they may extend from the housing 24. Specifically, in a state where the housing 24 is inserted into the fitting cylinder part 15a1, a shielding wall or a shielding part is extended radially outward from the upper outer periphery of the housing 24 that is not inserted into the fitting cylinder part 15a1. It's okay. Further, the shielding portion 29 in FIG. 7 may be applied to the discharge device 10 in FIG. 4, the discharge device 10A in FIG. 5, and the discharge device 10B in FIG. Further, the communication path W may be formed when the cap 20 is completely tightened, or may be formed only when the cap 20 is loosened. Furthermore, although a double pressurized container was used as the container 11, a single container may also be used. That is, a pressurized product may be obtained by filling the external container 13 with the stock solution C and the pressurizing agent P without providing the internal container 14.

10, 10A, 10B, 10C Discharge device 11 Double pressurized container 11a Pressurized product 12 Discharge member C Stock solution P Pressurizing agent 13 External container 13a Bottom portion 13a1 Ground surface 13a2 Dome portion 13b Body portion 13c Shoulder portion 13d Neck portion 13d1 Support portion 13e Male screw 13f Upper end surface of neck 13g Annular protrusion 14 Internal container Sc Stock solution storage chamber Sp Pressurizing agent storage chamber 14a Bottom 14a1 Recessed portion 14a2 Dome portion 14b Body 14c Shoulder 14d Neck 14d1 Upper 14d2 Tapered portion 14d3 Drooping portion 14e Upper end surface 14f Flange 14g Annular protrusion 14h Horizontal groove 14i Vertical groove 15 Lid body 15a Sealing part 15a1 Fitting cylinder part 15a3 Lower part 15a4 Lower end 15a5 Lower cylinder part 15a6 Connecting part 15b Flange 15c Bottom part 15d Closing part 15d1 Pressure receiving part 15f Thin wall part (broken part)
15g Reinforcement rib 15h Seal release groove 16 Container body 17 Annular disc part 17a Outer cylinder part 18 Valve holder 18a Valve holding part 18b Rubber retainer 18c Flange 18d (Stem passing through) hole 20 Cap (installation part)
20a Upper base 20b Opening 20c Female thread 21 Valve 22 Stem 23 Operation button 24 Housing 24a Accommodation part 24b Bottom plate 24c Vertical hole 25 Spring 26 Stem rubber 27 Opening part 27a Bottom surface 28 (of opening part) Seal member B Valve mechanism S Shielding means 18e Shielding Wall 18f Shielding part 29 Shielding part IS Insertion space R Storage part O Outlet W Communication path

Claims (8)

A pressurized product filled with a stock solution and a pressurizing agent in a container,
and a discharge member attached to the pressurized product,
The container includes a container body and a lid that closes the container body,
The lid body includes a fitting cylinder part that communicates with the inside of the container body,
The discharge member includes a valve that is inserted into the fitting cylinder part and forms a seal with the fitting cylinder part, and a cap that removably engages with the container and covers the valve and the lid body,
By moving the valve in the direction of pulling it out from the fitting tube, a communication path is formed between the valve and the fitting tube, which communicates from the outlet of the stock solution to the engagement part between the container and the cap, and the outlet is formed between the valve and the fitting tube. and a shielding means for making the flow area of the communicating passage substantially unchanged even if the valve is moved until the valve is formed. 2. The dispensing device according to claim 1, wherein the shielding means continues to surround the fitting cylinder portion even when the valve is moved until the outlet is formed. The valve includes a housing inserted into the fitting cylinder and a valve holder located above the housing,
3. The discharge device according to claim 1, wherein the shielding means comprises a shielding wall that hangs down from the valve holder and continues to surround the fitting cylinder portion even if the valve is moved until the jetting port is formed. The lid body further includes a sealing part provided so as to surround the fitting cylinder part,
The discharge device according to any one of claims 1 to 3, wherein an insertion space into which a shielding means can be inserted is formed inside the sealing part. The valve includes a housing inserted into the fitting cylinder and a valve holder located above the housing,
the valve holder includes a valve retaining portion that fits over the top of the housing;
The lid body further includes a sealing part provided so as to surround the fitting cylinder part,
2. The dispensing device according to claim 1, wherein the shielding means comprises a shielding part extending from the valve holding part away from the housing and remaining within the sealing part even when the valve is moved until the spout is formed. The lid body further includes a sealing part provided so as to surround the fitting cylinder part, and a flange provided on the outer periphery of the sealing part and abutting on the container body,
A dispensing device according to any one of claims 1 to 5, wherein a shielding means is provided between the flange and the cap. 7. The discharge device according to claim 6, wherein the shielding means is made of a liquid-absorbing material. The discharge device according to any one of claims 1 to 7, further comprising a storage section for storing the stock solution shielded by a shielding means.

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