JP7398942B2 - Discharge device - Google Patents

Description

The present invention relates to a dispensing device, and particularly to a dispensing device that includes a pressurized product whose container is filled with a stock solution and a pressurizing agent and sealed, and a dispensing member that is detachable from the pressurized product.

Patent Document 1 describes a discharge device in which a discharge member including a valve is attached to a container filled with a stock solution and a pressurizing agent. In this discharge device, the discharge member is removably attached to the container. Specifically, the discharge member includes a valve and a cap that covers the valve, and the discharge member is attached to the container by screwing the cap onto a screw provided on the outer periphery of the neck of the container. . Therefore, it is possible to reuse the ejection member by removing it from the container and replacing it with a new container after all the stock solution has been ejected.

US Pat. No. 5,001,202 discloses a device for dispensing a fluid product in the inner container under pressure, the device having a mounting sleeve that holds an inner container in the center and is ultrasonically welded to the outer container at the outer periphery. ing. A valve excluding the stem is inserted into the cylindrical member at the upper end of the inner container, and the valve is housed within the cylindrical member by a mounting sleeve. The stem is integrated with the push button. Patent Document 3 discloses an aerosol dispenser that includes a valve cup sealed in an opening of an outer container and a valve assembly disposed within the valve cup. The periphery of the valve cup is fixed to the container body by ultrasonic welding, laser welding, adhesive, etc. to the upper end of the neck of the outer container.

International Publication No. 2015/080252 Patent No. 5138777 Patent No. 5809352

In the contents storage container of Patent Document 1, an opening is attached to the lower end of the tube constituting the discharge flow path to close the opening of the tube, and when a discharge member with a valve is attached, the opening falls off and the container is closed. The valve is configured to communicate with the valve. This content storage container is intended to be discarded after the content is discharged, and once opened, it cannot be resealed. Therefore, if the discharging member is removed by mistake while the stock solution remains, the entire amount of the remaining stock solution will be wasted and ejected. In the device of Patent Document 2, the valve cannot be removed because it is fixed to the outer container by a mounting sleeve. The aerosol dispenser of Patent Document 3 does not disclose the relationship between the valve assembly and the actuating device, and does not mention problems and solutions when the actuating device (discharge member) is removed.

The technical object of the present invention is to provide a dispensing device that does not waste the undiluted solution even if the dispensing member is removed from the container by mistake, and can be returned to a usable state by reattaching the dispensing member.

The discharge device 10 of the present invention includes a pressurized product 11a in which a container 11 is filled with a stock solution C and a pressurizing agent P and sealed, and a discharge member 12 that is detachably attached to the pressurized product 11a. The discharge member 12 includes a valve 21 for operating discharge/stop of the stock solution C, the container 11 includes a container body 16, and a lid 15 that closes an opening of the container body 16, and the lid 15 , provided on the fitting cylinder part 15a1 for forming a seal with the valve 21 when the discharge member 12 is attached, and the lower parts 15c and 15a7 of the fitting cylinder part 15a1, when the discharge member 12 is not attached. When the opening 15c1 of the lower part 15c, 15a7 of the fitting cylinder part 15a1 is sealed, the sealing valve 19, 19A, 19B, 19C is unsealed when the discharge member 12 is attached and resealed when the discharge member 12 is removed. It is characterized by the presence of

In such a discharge device 10, the sealing valves 19, 19C are made of rubber or synthetic resin elastomer, and in a natural state, they elastically come into contact with the periphery of the opening 15c1 of the lower part (bottom) 15c of the fitting cylinder part 15a1. It is preferable to have a closing part (inner peripheral protrusion 19a) that contacts and seals and releases the seal when pressed by the discharge member 12, and a communicating part 19d provided outside the closing part. It is preferable that the sealing valve 19 has a cylindrical outer circumferential wall 19c that is compressed by the inner circumferential surface of the container body 16 and the lower outer circumferential surface of the fitting cylinder portion 15a1. Furthermore, it is preferable that the container main body 16 consists of an outer container 13 and an inner container 14 accommodated therein, and the outer peripheral wall 19c is compressed by the inner container 14 and the fitting cylinder portion 15a1. It is preferable that the closing portion (19a) of the sealing valve 19, 19C is an inner circumferential protrusion 19a that contacts the inner circumferential edge of the opening 15c1 of the fitting cylinder portion 15a1 and is elastically deformed when pressed by the discharge member 12.

Further, the sealing valve 19A is provided so as to be vertically movable between a raised position where the sealing valve 19A is in close contact with the lower end 15a7 of the fitting cylinder portion 15a1 and sealed, and a lowered position where there is a gap and the seal is released. is preferred. In that case, the container body 16 has an outer container 13 and an inner container 14 accommodated therein, and the inner container 14 has a shoulder 14c and a neck 14d thereon. It is preferable that the diameter of the neck portion 14d is reduced in the middle in the vertical direction, and that the reduced diameter portion is smaller in diameter than the outer diameter of the sealing valve 19A.

Further, the fitting cylinder part 15a1 has a bottom part 15c extending inward from the vicinity of the lower end, and an opening 15c1 at the lower part of the fitting cylinder part 15a1 is formed in the bottom part 15c, and the sealing valve 19B An engaging portion 19Bf that engages with the periphery of the opening on the upper surface of the bottom, a flange 19Bb that comes into close contact with the lower surface of the bottom 15c to seal the opening 15c1, and a fitting that connects the engaging portion 19Bf and the flange 19Bb. The sealing valve 19B moves up and down between a raised position where the flange 19Bb is in close contact with the lower surface of the bottom portion 15c and a lowered position where a gap is created between the flange 19Bb and the lower surface of the bottom portion 15c. It may be freely provided.

In the above-described discharge device 10, it is preferable that a holding member 29a supporting the sealing valve 19C is provided at the lower part of the fitting cylinder portion 15a1. In that case, it is preferable to have a tubular passage member 29 extending downward from the lower end of the fitting cylindrical portion 15a1, and the holding member 29a to be provided near the upper end of the passage member 29.

In the dispensing device of the present invention, the lid body that closes the opening of the container body is provided with a fitting cylindrical portion for forming a seal with the valve when the dispensing member is attached, and a lower part of the fitting cylindrical portion. It is equipped with a sealing valve that is opened when the discharge member is attached and resealed when the discharge member is removed, so that a seal is formed between the valve and the fitting cylinder when the discharge member is attached. The sealing valve will be opened in the condition that the undiluted solution is present, and the stock solution will not flow out. In addition, even if the user accidentally attempts to remove the dispensing member from the container with the undiluted solution remaining, the sealing valve will be resealed with a seal formed between the valve and the fitting cylinder. , can prevent the raw solution from flowing out. When the user reinstalls the discharge member, the sealing valve is opened, and the remaining stock solution can be discharged by the discharge member. Therefore, the undiluted solution can be used without wasting it.

In such a discharge device, the sealing valve is made of rubber or synthetic resin elastomer, and in a natural state elastically contacts and seals the periphery of the lower opening of the fitting cylinder portion, and is pressed by the discharge member. When the valve has a closing part for releasing the seal, and a communication part provided outside the closing part, the sealing valve can be constructed with a simple structure. When the sealing valve has a cylindrical outer circumferential wall that is compressed by the inner circumferential surface of the container body and the lower outer circumferential surface of the fitting cylinder part, the sealing valve is stably held and the sealing valve can be opened reliably. can do. Additionally, since the space between the container body and the lower part of the lid is sealed by the outer peripheral wall, when the lid is ultrasonically welded, a portion of the stock solution is atomized by ultrasonic vibration, and the vapor welds. It is suppressed from coming up to the site and interfering with ultrasonic welding. In that case, if the container body further includes an outer container and an inner container accommodated therein, and the outer peripheral wall is compressed by the inner container and the fitting cylinder, the outer container and the inner container It is possible to prevent the pressurizing agent from entering the inner container when filling the inner container with the pressurizing agent. When the closing portion of the sealing valve is an inner peripheral protrusion that comes into contact with the inner peripheral edge of the opening of the fitting cylinder and is elastically deformed when pressed by the discharge member, the closed state and the unsealed state are stable.

If the sealing valve is provided so as to be movable up and down between a raised position where it is in close contact with the lower end of the mating cylinder and sealed, and a lowered position where there is a gap and the seal is released, the sealing valve No elastic deformation is required, allowing a high degree of freedom in material selection. Therefore, if the material is made from the same material as the lid, there will be no need to separate the material at the time of disposal, which can contribute to reducing the environmental load. The container body has an outer container and an inner container accommodated therein, and the inner container has a shoulder and a neck above the shoulder, and the neck has a diameter that decreases in the middle in the vertical direction. If the reduced diameter portion is smaller in diameter than the outer diameter of the sealing valve, the head space within the inner container will be smaller and the number of parts will be reduced. Further, when the sealing valve is in the lowered position, it is held by the reduced diameter portion and the position is stabilized, and when it returns to the raised position, it can be reliably sealed. Furthermore, the sealing valve is prevented from falling.

The fitting cylindrical portion has a bottom extending inward from near the lower end, and an opening at the bottom of the fitting cylindrical portion is formed in the bottom, and the sealing valve is configured to close the bottom when the sealing valve is lowered. an engaging portion that engages with the periphery of the opening on the top surface; a flange that tightly contacts the lower surface of the bottom to seal the opening when raised; and a connecting portion that connects the engaging portion and the flange; If the valve is provided so as to be vertically movable between a lowered position where the engaging portion engages with the periphery of the opening on the upper surface of the bottom, and a raised position where the flange is in close contact with the lower surface of the bottom, the valve is simple. It is possible to configure a discharge device having a sealed valve with a similar structure.

In the above-described discharge device 10, when the holding member 29a that supports the sealing valve 19C is provided at the lower part of the fitting cylinder portion 15a1, it is possible to prevent the sealing valve 19C from falling off during or after unsealing. . If the fitting cylinder part 15a1 has a tubular passage member 29 extending downward from the lower end, and the holding member 29a is provided near the upper end of the passage member 29, the holding member 29a is connected to the lid 15. It is easy to integrate, and the passage member 29 can be a dip tube.

FIG. 1A is a sectional view showing a dispensing device, and FIG. 1B is a sectional view of a container body used in the dispensing device. FIG. 2A is a sectional view of the main part of the discharge member, and FIG. 2B is a sectional view of the main part of the pressurized product. FIG. 3A is a cross-sectional view of a main part showing a discharged product in an unsealed state, and FIG. 3B is a cross-sectional view of a main part showing a state in which the cap is loosened after opening. FIG. 4A is a cross-sectional view of a main part showing another embodiment of the pressurized product, and FIG. 4B is a cross-sectional view of a main part showing an unsealed state of the discharged product. FIG. 5A is a sectional view of a main part showing still another embodiment of a pressurized product, and FIG. 5B is a sectional view of a main part showing an unsealed state of a discharged product. FIG. 6A is a cross-sectional view of a main part showing still another embodiment of a pressurized product, and FIG. 6B is a cross-sectional view of a main part showing a discharged product in an unsealed state.

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 can be used as a set before being assembled (see FIG. 1A), or in a half-assembled and unopened state (with a cap 20 and a male thread 13e of an external container 13, which will be described later, loosely screwed together). ) will be sold at. 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 plate, plug) that seals the outer container 13 and the inner container 14. 15, and a sealing valve 19 that closes the opening 15c1 at the bottom of the lid body 15. It does not have a discharge valve or pump. 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 accommodates the stock solution C and the pressurizing agent P so that only the stock solution C can 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. A plurality of sloped portions 13h are provided on the inner or outer side of the upper end surface 13f, and are spaces for accommodating resin pieces formed by cooling melted resin during ultrasonic welding so that they do not protrude. becomes. 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. The upper part 14d1 of the neck 14d of the inner container 14 is cylindrical, and has a slight gap between its outer surface and the inner surface of the neck 13d of the outer container 13. A tapered portion 14d2 that becomes thinner toward the bottom is provided below the cylindrical portion, and a cylindrical portion 14d3 is provided below the tapered portion 14d2. The inner surface of the upper part 14d1 of the neck 14d of the inner container 14 is a smooth cylindrical surface. The bottom 14a of the inner container 14 is in contact with the bottom 13a of the outer container 13, and supports the inner container 14 so that it does not fall down when filling the pressurizing agent P or fixing the lid 15.

As shown in FIG. 2B, the upper end surface 14e of the neck 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 provided at the protruding portion. It is formed. 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. Furthermore, a vertical groove 14i communicating with the horizontal groove 14h is formed on the outer peripheral surface of the cylindrical upper part 14d1 of the neck 14d of the inner container 14. The vertical groove 14i extends from the horizontal groove 14h to the upper end of the tapered portion 14d2. Since the vertical groove 14i is provided, even if the cylindrical upper part 14d1 is fitted to the inner surface of the neck portion 13d of the external container 13, the pressurizing agent P can be easily filled 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 this case, even during blow molding, the shape and precision of the neck portions 13d and 14d during injection molding are maintained.

As shown in FIG. 2B, the lid 15 is inserted into the neck 14d of the inner container 14, and has a bottomed cylindrical sealing part 15a that receives the valve 21 of the discharge member 12, and an annular flange continuous to the upper end of the sealing part 15a. 15b. The lower part of the sealing part 15a is a fitting cylinder part 15a1 having a smaller diameter than the upper part. A circular opening 15c1 is provided at the bottom of the sealing part 15a, that is, the bottom 15c of the fitting cylinder part 15a1, and the opening 15c1 is opened by a sealing valve 19 fitted to the lower outer periphery of the fitting cylinder part 15a1. It is sealed.

The sealing valve 19 includes an elastically deformable thin inner peripheral projection 19a that enters into the opening 15c1 from below and closes the opening 15c1, and a fitting cylinder portion 15a1 that expands outward from the lower end of the inner peripheral projection 19a. It consists of an annular plate portion 19b that contacts the lower end, and an outer peripheral wall 19c that rises from the outer periphery of the annular plate portion 19b and tightly fits the outer periphery of the fitting cylinder portion 15a1. The inner circumferential protrusion 19a has a hemispherical or ellipsoidal shape, and a communication hole 19d is formed below the portion where it contacts the opening 15c1. Instead of the inner circumferential protrusion 19a that enters the opening 15c1 from below, a sheet-like closing part may be used that elastically abuts the bottom 15c of the fitting cylinder part 15a1 to close the opening 15c1. The communication hole 19d may be a slit or an opening.

The sealing valve 19 is made of an elastic material, particularly a synthetic resin elastomer or a silicone elastomer, which can be reversely deformed when pressed by the opening portion 27 of the discharge member 12 as shown in FIG. 3A. As the synthetic resin elastomer, for example, polyester-based, polyolefin-based, polyurethane-based, and polystyrene-based elastomers are preferred. When the outer container 13 and the inner container 14 are made of polyester such as polyethylene terephthalate, polyethylene elastomer is preferable and can be disposed of as a single material without being separated. Instead of elastomer, it can also be formed from rubber such as natural rubber or synthetic rubber.

In this embodiment, the outer peripheral wall 19c of the sealing valve 19 is compressed between the fitting cylinder part 15a1 and the cylindrical part 14d3 of the neck part 14d of the inner container 14. By forming the sealing valve 19 from elastomer or rubber, the outer peripheral wall 19c can be used as a sealing material for sealing the inside of the inner container 14. Since the inner container 14 is provided with a constricted portion and the outer circumferential wall 19c is compressed by the fitting cylinder portion 15 and the constricted portion, the gas phase portion Gp (head space) becomes small when the stock solution C is filled. Therefore, when a consumer starts using the product, the concentrated liquid C is vigorously discharged and scattered due to the gas compressed in the gas phase part Gp, and the concentrated liquid C is mixed with gas at the time of discharge, and the concentrated liquid C is discharged discontinuously. Problems such as these are less likely to occur, and dispensing becomes smoother. In particular, post-foaming gel compositions or post-foaming creams containing a foaming agent with a boiling point of -5 to 35°C, such as n-butane, isopentane, or 1-chloro-3,3,3-trifluoropropene, in the stock solution. Even when the composition is filled, the small gas phase portion Gp prevents foaming immediately after filling and allows the composition to be discharged in the form of a gel or cream.

Basically, it is preferable that the inner circumferential surface of the fitting cylinder part 15a1 be a smooth cylindrical surface so that when the sealing valve 19 is opened, the sealing member 28 of the valve 21 comes into close contact with the undiluted solution C to prevent leakage. . It may also have a tapered shape that decreases in diameter toward the bottom.

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 portion 15c of the fitting cylindrical portion 15a1 is provided slightly above the lower end of the fitting cylindrical portion 15c1 is to provide a space into which the inner circumferential protrusion 19a of the sealing valve 19 can fit. The reason why the diameter of the fitting cylinder part 15a1 is made smaller than the diameter of the upper part of the sealing part 15a is to improve the molding accuracy of the inner surface of the fitting cylinder part 15a1, and to reduce the internal pressure surrounded by the seal member 28 of the discharge member 12. This is to reduce the area that receives the force, thereby weakening the upward force applied to the lid body 15. This is to ensure a space for accommodating the valve holding portion 18a that further projects downward.

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.

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 body products such as hair products such as styling products and hair dyes, foods such as whipped cream and olive oil, deodorants, air fresheners, cleaning agents, insecticides, repellents, pollen removers, disinfectants, and mold prevention agents. household products such as disinfectants, and industrial products 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. The pressure inside the double pressurized container 11 is set to 0.1 to 0.5 MPa (25° C., gauge pressure) using a pressurizing agent, especially 0.3 to 0.5 MPa (25° C., gauge pressure), which is about the same pressure as carbonated beverages. ) is preferable. 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 mentioned above, since the double pressurized container 11 has a small number of parts, it can be manufactured at low cost. Since the pressure in the double pressurized container 11 is low, comparable to that of carbonated drinks, it is safe when carried by consumers or 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. In addition, since the sealing valve 19 is located inside, there is little risk that the sealing valve 19 will be accidentally pressed before the discharge member is attached and the contents will be discharged, making it even safer.

The discharge member 12 includes a cap (installation part) 20 that is screwed into the external thread 13e of the neck 13d of the outer container 13, a valve 21 covered by the cap 20, and a discharge member that is attached to the stem 22 of the valve 21. It consists of an operation button (actuator, reference numeral 23 in FIG. 1A) equipped with a nozzle. As shown in FIG. 2A, the cap 20 has a cylindrical shape with a bottom, and is a so-called screw cap in which a female thread is formed on the inner peripheral surface. The cap 20 and the valve 21 are integrated, and the valve 21 moves within the fitting cylinder portion 15a1 in conjunction with the tightening condition of the cap 20. That is, when the cap 20 is tightened, the valve 21 is pushed into the fitting cylinder portion 15a1, and the sealing valve 19 is opened. When the cap 20 is loosened, the valve 21 moves in the direction of being pulled out from the fitting cylinder portion 15a1, and the sealing valve 19 is sealed again. 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.

The valve 21 includes a bottomed cylindrical housing 24, the aforementioned stem 22 housed inside the housing so as to be able to move up and down, a spring 25 that biases the stem 22 upward, a stem rubber 26, and the housing 24. The valve holder 18 includes a cylindrical valve holding part 18a that holds the upper part, 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 that switches between a discharge state and a non-discharge state of the stock solution C, and the housing 24 and the valve holder 18 form an accommodation space for accommodating this valve mechanism. It consists of

In this embodiment, a cylindrical opening portion 27 that projects downward is provided at the lower end of the housing 24, and 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. Since this sealing member 28 is compressed between the inner surface of the fitting cylinder portion 15a1 and the outer surface of the housing 24, which are spaced almost equally apart in the vertical direction, the seal can be maintained even if the sealing member 28 moves slightly in the vertical direction. . The bottom surface 27a of the unsealing portion 27 is flat.

In this embodiment, the diameter of the unsealing portion 27 is somewhat smaller than the opening 15c1 of the bottom portion 15c of the fitting cylinder portion 15a1. Therefore, when the sealing valve 19 is opened, the bottom surface 27a of the opening portion 27 does not come into contact with the bottom portion 15c and prevent the sealing valve 19 from being pushed in. Moreover, after opening, the bottom surface 27a of the unsealing part 27 can be made to protrude downward from the opening 15c1, making it easy to secure a passage for the stock solution C (see FIG. 3A). A plurality of reinforcing plates 27d are provided radially between the cylindrical opening portion 27 and the lower surface 24a of the housing 24. The number of reinforcing plates 27d is preferably 3 to 5. The reinforcing plate 27d has a substantially triangular shape in a side view, and its lower end does not reach the lower end of the unsealing part 27, and the vicinity of the lower end of the unsealing part 27 remains cylindrical.

The housing 24 is provided with a vertical hole 24c that vertically penetrates the bottom plate 24b of the housing 24 as a passageway that communicates the inside of the housing 24 with the stock solution storage chamber Sc in the internal container 14. The vertical hole 24c is formed between adjacent reinforcing plates 27d. Therefore, the reinforcing plate 27d does not hinder the discharge of the contents. The vertical holes 24c are formed in the same number as the reinforcing plates 27d. However, it may be less than that, such as one or two. 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 lightly contacts the sealing valve 19 when the cap 20 is screwed onto the male thread 13e of the outer container 13 about once or twice. Therefore, during shipping and distribution, the cap 20 is loosely screwed together and the sealing valve 19 is not opened, so that the discharge member 12 and the double pressurized container 11 can be temporarily connected in a sealed state.

The valve holder 18 includes a valve holding part 18a, an annular rubber retainer 18b extending inward from the upper end of the valve retaining part 18a, and a flange 18c extending outward, and a hole through which the stem 22 passes through the center of the rubber retainer 18b. 18d is formed.

When a user uses a purchased dispensing device 10, the cap 20 is first screwed onto the male thread 13e of the external container. As a result, the entire cap 20 and the valve 21 are lowered, and the bottom surface 27a of the unsealing portion 27 pushes down the inner peripheral protrusion 19c of the sealing valve 19. As a result, the upper part of the inner circumferential protrusion 19c is reversed downward, the seal of the opening 15c1 is released, and the inside of the fitting cylinder 15a1 and the stock solution storage chamber Sc in the inner container 14 are communicated with each other through the communication hole 19d. Pressure product 11a is opened.

When the seal of the opening 15c1 is released, the stock solution C may leak. However, since the space between the fitting cylinder part 15a1 and the housing 24 is sealed with the sealing member 28 downstream of the opening 15c1, the stock solution C remains within the fitting cylinder part 15a1 and does not leak to the outside. Further, after opening, the internal pressure of the inner container 14 acts 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 double support. Therefore, the ejection 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.

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 communication hole 19d, the opening 15c1, the housing 24, the stem 22, and the operation button 23. be done. When you release your finger from the operation button 23, 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.

As described above, the user repeatedly presses down and releases the operation button 23, and the undiluted solution C is discharged, but if the user accidentally loosens the cap 20 even though the undiluted solution C remains. , the discharge member 12 rises as shown in FIG. 3B. At this time, the unsealing portion 27 at the lower end of the housing 24 rises, so that the inner circumferential protrusion 19a of the sealing valve 19 elastically returns to its original shape and seals the opening 15c1. Thereby, discharge of the stock solution C is suppressed. Thereby, unnecessary leakage of the stock solution C can be prevented. When the user notices the accidental opening and tightens the cap 20, the unsealing part 27 pushes the inner protrusion 19a of the sealing valve 19 and opens the opening 15c1 in the same manner as described above, so that the discharge/stop operation using the push button 23 is performed again. become able to.

After discharging the entire amount of the stock solution C, the cap 20 is turned and the discharging member 12 is removed from the pressurized product 11a. Then, the removed discharge member 12 is attached to a new pressurized product 11a. In the pressurized product 11a from which the entire amount of the stock solution C has been discharged, although the pressurizing agent P remains in the pressurizing agent storage chamber Sp, for example, the base portion that fits into the inner surface of the fitting cylinder portion 15a1 and the sealing valve 19 are pushed in. By using an unsealing instrument having a projection or an unsealing instrument that pierces the sealing valve 19, the sealing valve 19 can be kept in an open state at all times. In that case, the pressurizing agent P passes through the inner container 14 and is gradually released to the outside from the opened sealing valve 19 of the lid 15. Further, the pressurizing agent P remaining in the pressurizing agent storage chamber Sp can be discharged by, for example, perforating the external container 13. Since the pressurized container 11 is easily deformed when the pressurizing agent P is released to the outside, it is easy for consumers to understand and the pressurized container 11 can be safely recycled. Furthermore, since the lid 15 and the container body 16 of the pressurized container 11 can be made of a single material, there is no need to separate them when recycling them, making them easy to recycle.

In the double pressurized container 11 shown in FIG. 4A, a substantially cylindrical sealing portion 15a of the lid 15 extends downward, and a fitting cylinder portion 15a1 is provided concentrically inside the sealing portion 15a. ing. 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 narrower toward the bottom. However, it may be cylindrical from the top to the bottom. The lower end of the sealing part 15a and the lower end 15a4 of the fitting cylinder part 15a1 are connected by a connecting part 15a6.

On the other hand, the neck portion 14d of the inner container 14 is shaped to be in close contact with the outer peripheral surface of the sealing portion 15a of the lid body 15, similar to the pressurized container 11 of FIG. 2B, and has a cylindrical upper portion 14d1 and It consists of a tapered part 14d2 that becomes thinner toward the bottom, and a cylindrical part 14d3 that extends downward from the lower end of the tapered part 14d2. The lower end of the cylindrical 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 cylindrical part 14d3, and the upper part of the shoulder part 14c form a constricted part.

The fitting cylindrical portion 15a1 is not provided with a bottom portion (15c in FIG. 2B) that protrudes inward, and continues as a cylindrical surface to the lower end. The lower end opening 15c1 is closed by a sealing valve 19A, similar to the double pressurized container 11 in FIG. 2B. However, the double pressurized container 11 shown in FIG. 4A differs in that the sealing valve 19A hardly undergoes elastic deformation, and when pushed down by the unsealing portion 27 of the discharge member 12, the container opens by moving somewhat downward.

The sealing valve 19A includes a fitting portion 19Aa that fits into the opening 15c1, and a flange 19Ab extending outward from the periphery of the lower end of the fitting portion 19Aa. The fitting portion 19Aa and the flange 19Ab have a circular planar shape, and the outer diameter of the flange 19Ab is large enough to fit into the inner diameter of the constriction of the inner container 14. Or somewhat larger. Further, the height of the fitting portion 19Aa is set to a size such that when the sealing valve 19A is pushed down by the opening portion 27 as shown in FIG. 4B, it does not come off from the fitting cylindrical portion 15a1.

The upper surface 19Ac of the flange 19Ab is a portion that contacts and seals with the lower surface (lower surface of the connecting portion 15a6) 15a7 of the fitting cylinder portion 15a1 of the lid body 15, and is smooth. The lower surface 15a7 of the fitting cylinder portion 15a1 is also made smooth. Vertical grooves 19Ad and 19Ae are formed on the outer circumferential surface of the fitting portion 19Aa and around the flange 19Ab, which communicate the inside of the fitting cylinder portion 15a and the inside of the internal container 14 when the sealing valve 19A is lowered.

The material of this sealing valve 19A is the same as that of the sealing valve 19 of the double pressurized container 11 in FIG. 2B. However, it is also possible to provide a layer of synthetic resin elastomer or rubber on the upper surface 19Ac of the flange 19Ab that comes into contact with the lid 15, and to make the other parts of the normal synthetic resin, for example, the same synthetic resin as the container body 16. The material of the fitting part 19Aa is preferably one that has good sliding properties with the inner surface of the fitting cylinder part 15a1. The other points are also similar to the double pressurized container 11 in FIG. 2B. Moreover, the discharge member 12 of FIG. 2A can be attached to the pressurized container 11 of FIG. 4A, and by attaching the discharge member 12, the sealing valve 19A can be opened.

In the double pressurized container 11 of FIG. 4A, when the discharge member 12 is not attached, the fitting portion 19Aa of the sealing valve 19A is deeply recessed into the opening 15c1 of the fitting cylinder portion 15a1, and the flange 19Ab is The upper surface 19Ac is in close contact with the lower surface 15a7 of the fitting cylinder portion 15a1. In this state, the inside of the internal container 14 is sealed.

Then, as shown in FIG. 4B, when the discharge member 12 is attached to the double pressurized container 11, the unsealing portion 27 of the discharge member 12 pushes the sealing valve 19A downward. Thereby, the sealing valve 19A is pushed down somewhat from the opening 15c1, and a gap G is created between the upper surface 19Ac of the flange 19Ab and the lower surface 15a7 of the fitting cylinder portion 15a1. Thereby, the inside of the fitting cylinder portion 15a1 and the inside of the internal container 14 communicate with each other via the vertical groove 19Ad of the fitting portion 19Aa, the gap G, and the vertical groove 19Ae of the flange 19Ab. Therefore, the user can open and close the discharge valve 21 by pressing the push button (reference numeral 23 in FIG. 1).

If the user accidentally loosens the cap 20 while the undiluted solution C remains in the internal container 14, the unsealing portion 27 will rise and there will be no force to push down the sealing valve 19A. Therefore, the sealing valve 19A rises due to the internal pressure in the internal container 14, and again fits into the opening 15c1 at the lower end of the fitting cylinder portion 15a1, thereby closing the opening 15c1. This prevents leakage of the stock solution G. When the user notices that the stock solution remains and retightens the cap 20, the sealing valve 19A is lowered and the discharge operation can be performed again using the push button 23.

In addition, when the vertical groove 15n is provided on the upper part of the inner peripheral surface of the fitting cylinder part 15a1, when the user accidentally loosens the cap 20 and raises the valve 21, a part of the seal by the sealing material 28 is released. As a result, the undiluted solution C between the sealing valve 19A and the sealing material 28 leaks. The consumer is more likely to notice the erroneous operation, and the sealing valve 19A is more likely to rise, making it easier to close the sealing valve 19A.

The double pressurized container 11 in FIG. 4A has a neck portion 14d of the inner container 14 formed with a constriction consisting of a tapered portion 14d2 and a cylindrical portion 14d3, and the constriction portion is in close contact with the sealing portion 15a of the lid 15. Therefore, as in the case of FIG. 2B, when the internal container 14 is filled with the stock solution C, the gas phase portion Gp (head space) becomes small.

In the double pressurized container 11 of FIG. 4A, the neck portion 14d of the inner container 14 and the lower part 15a3 of the sealing portion 15a of the lid body 15 can also be formed into a straight cylindrical shape. However, it is preferable to provide a constricted portion in the neck portion 14d of the inner container 14 and to make the lower portion 15a3 of the sealing portion 15a of the lid body 15 tapered because the diameter and volume of the gas phase portion Gp can be reduced. Further, the constriction can restrict the descending end of the sealing valve 19A, but if the constriction is not provided, it is recommended to provide a supporting portion such as a step that restricts the descending end when the sealing valve 19A descends. preferable.

Further, it is preferable that the tapered lower part 15a3 and the tapered part 14d2 of the neck part 14d of the inner container 14 are fitted airtightly, thereby preventing the pressurizing agent P from getting into the inner container 14 when filling it. In addition, even if the stock solution C is atomized by ultrasonic vibration when welding the lid 15, it will not flow out to the welding part from the gap between the tapered lower part 15a3 and the tapered part 14d2 of the neck of the inner container. This prevents welding from being inhibited.

The double pressurized container 11 shown in FIG. 5A is substantially the same as the double pressurized container 11 shown in FIG. 4A, except for the configuration to prevent the sealing valve 19B from falling off. In the lid 15 of this double pressurized container 11, a bottom 15c extending inward is provided on the inner surface of the lower part of the fitting cylinder part 11a1, like the lid 15 of FIG. 2B, and an opening 15c1 is provided in the center of the bottom 15c. It is formed. A sealing valve 19B is provided within the opening 15c1 so as to be movable up and down.

The sealing valve 19B is made of rubber or elastomer, and includes a fitting portion (connecting portion) 19Ba that slidably fits into the opening 15c1, and expands outward from the lower end of the fitting portion 19Ba, causing the sealing valve 19B to rise. A flange 19Bb that comes into close contact with the lower surface of the bottom part 15c to seal the opening 15c1 when the fitting part 19Ba is in contact with the lower surface of the bottom part 15c, and an engaging part that spreads substantially horizontally outward from the upper end of the fitting part 19Ba and engages with the periphery of the opening 15c1 on the upper surface of the bottom part 15c when the fitting part 19Ba is lowered. 19Bf. In this embodiment, the upper surface 19Bc of the flange 19Bb is tapered upward, and the upper surface 19Bc of the flange 19Bb and the edge 15c2 at the lower end of the opening 15c1 abut to form a line seal. The sealing pressure is based on the elastic return force of the sealing valve 19B and the pressure in the stock solution storage chamber Sc due to the pressurizing agent P accommodated in the pressurizing agent storage chamber Sp.

In this embodiment, the engaging portion 19Bf expands almost horizontally in the state shown in FIG. 5A when the discharge member 12 is not attached, but when the discharge member 12 is attached to the double pressurized product 11a, the engagement portion 19Bf is pressed downward. When this occurs, it elastically deforms diagonally upward so as to expand upward. Therefore, the elastic return force that causes the engaging portion 19Bf to return to the horizontal position provides a force that urges the sealing valve 19B upward.

A vertical groove 19Bh is formed on the outer circumferential surface of the fitting part 19Ba to serve as a passage for the stock solution C when being discharged, and a lateral groove 19Bi communicating with the vertical groove 19Bh is formed on the lower surface of the engaging part 19Bf. . However, depending on conditions such as the viscosity of the stock solution C, the horizontal grooves 19Bi may become unnecessary. Further, depending on the size of the gap between the fitting portion 19Ba and the opening 15c1, the vertical groove 19Bh may become unnecessary.

In this embodiment, a recess 19Bg is formed on the upper surface of the sealing valve 19B to fit into a rod-shaped opening 27 formed at the lower end of the discharge member 12. The depth of the recess 19Bg is such that when the unsealing part 27 pushes down the sealing valve 19B, a tensile force is applied to the fitting part 19Ba, for example, the depth is such that the lower end is about half the thickness of the bottom part 15c. It is preferable to Thereby, when the sealing valve 19B is pushed down, compressive deformation of the fitting portion 19Ba is suppressed, and the fitting portion 19Ba can be lowered smoothly.

Further, it is preferable that the inner circumferential surface of the recess 19Bg is somewhat tapered so as to expand upward as shown in FIG. 5A. Thereby, when the sealing valve 19B is pushed down as shown in FIG. 5B, the engaging portion 19Bf tends to be elastically deformed diagonally upward. Note that the concave portion 19Bg may be elastically fitted into the unsealing portion 27 and lifted upward by frictional force when the unsealing portion 27 is raised.

In other respects, it is similar to the double pressurized container 11 in FIG. 4A. For example, the shape and material of the outer container 13, the shape and material of the inner container 14, and the shape and material of the fitting cylinder portion 15a1 other than the bottom portion 15c are the same as those in FIG. 4A, and the same effects are achieved. Therefore, the same parts are given the same reference numerals and detailed explanations will be omitted. The material of the sealing valve 19B is the same synthetic resin or elastomer as the material of the sealing valve 19 of the double pressurized container 11 in FIG. 2B. Moreover, the same ones as those in the embodiment of FIG. 2B can be adopted for the stock solution C accommodated in the internal container 14 and the pressurizing agent C accommodated in the pressurizing agent storage chamber Sp.

In the double pressurized container 11 of FIG. 5A, when the discharge member 12 is not attached, the sealing valve 19B is urged upward by the elastic return force and internal pressure of the engaging portion 19Bf, and the upper surface 19Bc of the flange 19Bb is fitted. It is in close contact with the edge 15c2 at the lower end of the opening 15c1 of the bottom 15c of the joint tube portion 15a1. In this state, the inside of the internal container 14 is sealed. Then, a discharge device 10 is obtained by attaching a discharge member 12 similar to that in FIG. 2A to the double pressurized container 11 in FIG. 5A.

In this case as well, the cap 20 is screwed into the male thread 11e of the neck 11d of the outer container 11, the housing 24 is lowered along the inside of the fitting cylinder part 15a1, the opening part 27 is fitted into the recess 19Bg of the sealing valve 19B, and then lowered. Then, as shown in FIG. 5B, the engaging portion 19Bg of the sealing valve 19B is elastically deformed to expand upward, and the fitting portion 19Ba descends within the opening 15c1. As a result, the seal between the upper surface 19Bc of the flange 19Bb and the lower end edge 15c2 of the opening 15c1 is opened, and the stock solution storage chamber Sc and the inside of the fitting cylinder part 15a1, and eventually the inside of the housing 24, communicate with each other. Thereafter, the stock solution C can be discharged by operating the valve 21.

In this state, since the engaging portion 19Bf engages with the upper surface of the bottom portion 15c (around the opening 15c), the sealing valve 19B does not fall off and maintains the opened state. Therefore, unlike the double pressurized container 11 in FIG. 4A, there is no need to make the outer diameter of the sealing valve 19A larger than the inner diameter of the constriction (cylindrical portion 14d3) of the neck 14d of the inner container 14 to prevent it from falling off. As described above, the double pressurized container 11 shown in FIG. 5A has a simple drop-off prevention structure or holding structure to enable the sealing valve 19B to be resealed.

If the user accidentally loosens the cap 20 while the undiluted solution C remains in the internal container 14, the unsealing part 27 will rise and there will be no force to push down the sealing valve 19B. Therefore, the sealing valve 19B is raised by the elastic return force of the engaging portion 19Bf and the internal pressure within the internal container 14, and the flange 19Bb closes the opening 15c1 at the lower end of the fitting cylinder portion 15a1 again. This prevents leakage of the stock solution C. When the user notices that the stock solution remains and retightens the cap 20, the sealing valve 19B is lowered and the discharge operation can be performed again using the push button 23.

If the recess 19Bg on the upper surface of the sealing valve 19B is to be strongly fitted into the unsealing part 27, a force is applied to lift the sealing valve 19B until the unsealing part 27 comes out of the recess 19Bg when the discharge member 12 is raised. Therefore, in addition to the above-described elastic return force of the engaging portion 19bf and the internal pressure within the internal container 14, a lifting force by the unsealing portion 27 acts, so that the resealing action of the sealing valve 19B becomes more reliable.

Other embodiments of pressurized containers and dispensed products will now be described with reference to FIGS. 6A and 6B. In the double pressurized container 11 of FIG. 2B or the double pressurized container 11 of FIG. 4A described above, the neck 14d of the inner container 14 is used to hold the sealing valves 19, 19A at the lower part of the lid 15. . Further, in the double pressurized container 11 shown in FIG. 5A, the sealing valve 19B is held at the bottom 15c of the fitting cylinder portion 15a1. On the other hand, the pressurized container 30 shown in FIG. 6A is characterized in that the sealing valve 19C is held by a cup-shaped holding member 29a attached to the lower part of the lid 15.

The pressurized container 30 in FIG. 6A includes a container body 31, a lid 15 that closes the mouth of the container body 31, a sealing valve 19C provided at the bottom of the lid 15, and a sealing valve 19C that closes the mouth of the container body 31. It consists of a holding member 29a held at the lower part. No inner container (see numeral 14 in FIG. 2B, FIG. 5A, etc.) is used. A pressurized product is obtained by filling the container body 31 with the stock solution C and the pressurizing agent P and closing it with the lid 15. The pressurizing agent P can be filled through the sealing valve 19C after the lid body 15 is fixed by welding or the like. Moreover, the pressurizing agent may be filled by under-cup filling before the lid body 15 is welded. The container body 31 is substantially the same as the outer container 13 of FIG. 1 and has a bottom, a body, a shoulder 13c, and a neck 13d. The neck portion 13d has a substantially cylindrical shape, and a male thread 13e is provided on its outer peripheral surface.

The lid 15 includes a bottomed cylindrical sealing portion 15a and a flange 15b extending outward from its upper end. The flange 15b does not have an outer cylinder portion (17a in FIG. 2B). The side wall of the sealing part 15a has a cylindrical upper part and a tapered lower part which becomes smaller in diameter toward the bottom. However, the whole may be cylindrical, or the whole may be tapered so that the diameter becomes smaller toward the bottom. A cylindrical fitting tube part 15a1 stands up from the bottom 15c of the sealing part 15a and is concentric with the sealing part 15a. The central region of the bottom portion 15c1 of the sealing portion 15a also serves as the bottom portion of the fitting cylinder portion 15a1. Its bottom part is somewhat higher than the other parts, and an opening 15c1 is formed in the center. The lower end edge 15c2 of the opening 15c1 contacts the sealing valve 19C to form a seal.

A holding member 29a that holds the sealing valve 19C is provided on the lower surface of the bottom portion 15c of the sealing portion 15a. In this embodiment, a cylindrical passage member 29 is integrally provided below the holding member 29a. Since no internal container is used in this embodiment, passageway member 29 acts as a dip tube. The passage member 29 may be a separate body. When an internal container is provided, there is no particular need to provide the passage member 29. However, it may also be provided to be used as a tube to secure the stock solution passage when the internal container is collapsed.

The holding member 29a has a shallow cup shape, and is provided with a flange 29a1 around its upper end for fixing to the lid 15. The peripheral wall 29a2 has a cylindrical shape, and an opening 29a4 communicating with the inside of the container body is formed in the bottom portion 29a3. The holding member 29a and the passage member 29 are made of the same material as the container body 31, such as polyethylene terephthalate, and are joined by ultrasonic welding, adhesive, or the like. By using a single material, separate disposal becomes easier.

The sealing valve 19C is a bowl-shaped member made of a soft elastic material such as rubber or synthetic resin elastomer, and includes a cup-shaped inner peripheral protrusion 19a that closes the opening 15c1 of the bottom 15c of the fitting cylinder portion 15a1, and a holding member 29a. and an outer peripheral wall 19Cc that fits into the inner surface of the peripheral wall 29a2 and rides on the bottom portion 29a3. A communication hole 19d is formed in the outer portion of the inner circumferential projection 19a, which communicates the inside of the fitting cylinder portion 15a1 and the inside of the holding member 29a when the seal is opened.

As shown in FIG. 6A, the sealing valve 19C normally comes into close contact with the lower end edge 15c2 of the opening 15c1 of the bottom 15c of the fitting cylinder portion 15a1 due to its own elasticity and internal pressure, thereby closing the opening 15c1. When the discharge member 12 is attached to the pressurized container 30 as shown in FIG. 6B, the unsealing part 27 of the discharge member 12 presses downward the center of the inner protrusion 19a of the sealing valve 19C, and the opening 15c1 and the sealing valve 19C Remove the seal. Thereby, the stock solution C can be discharged by operating the valve 21. Even if the user accidentally loosens the cap 20 while the stock solution C remains, the sealing valve 19C closes the opening 15c1, so the stock solution C and pressurizing agent P do not leak out unnecessarily. When the user realizes that the cap has been loosened by mistake, the user closes the cap 20 to seal it again, and returns to the state where it can be discharged by operating the valve 21.

Since this embodiment is not a double container, the pressurizing agent P also exits after the stock solution C is discharged. Therefore, when the pressurizing agent P is discharged, the external container is easily deformed by strongly grasping it, so that the consumer can recognize that the discharge member 12 can be safely removed. After the discharge of the stock solution C and the pressurizing agent P is completed, the discharge member 12 is removed from the empty pressurizing container 30 and replaced with a new pressurizing container.

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, in the embodiment shown in FIG. 1A, the container body is a double container consisting of an outer container and an inner container, and the inner container is used to partition the stock solution storage chamber into which the stock solution is filled and the pressurizing agent storage chamber into which the pressurizing agent is filled. However, as shown in FIG. 6A, the inner container may be omitted and a single container may be used, and the pressurizing agent and the stock solution may be filled in a mixed state. Moreover, the sealing valve 19 of FIG. 2B may be combined with the inner container 14 of FIG. 4A, and the sealing valve 19A of FIG. 4A, the sealing valve 19B of FIG. 5A, or the sealing valve 19C of FIG. 6A may be combined with the inner container 14 of FIG. 2B. You can also do that.

In addition, in the double pressurized container 11, the lid 15 was welded to both the inner container 14 and the outer container 13, but it was fixed to either one, and the other was simply sealed (sealed) with an O-ring or the like. ). Further, in the above embodiment, the inner container 14 and the outer container 13 are manufactured by blow molding at the same time, but they may be manufactured separately and then the inner container is housed inside the outer container. The inner container may be blow molded within the outer container. Although the cylindrical opening portion 27 is used in the above embodiment, it may be any other shape such as a prismatic shape or a rod shape.

10 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 thread 13f Top of neck portion End face 13g Annular projection 13h Inclined part 14 Internal container Sc Stock solution storage chamber Sp Pressurizing agent storage chamber 14a Bottom part 14a1 Recessed part 14a2 Dome part 14b Body part 14c Shoulder part 14d Neck part 14d1 Cylindrical upper part 14d2 Tapered part 14d3 Cylindrical part 14e Upper end surface 14f Flange 14g Annular projection 14h Horizontal groove 14i Vertical groove 15 Lid body 15a Sealing part 15a1 Fitting tube part 15a3 Tapered lower part 15a4 Lower end 15a6 Connecting part 15a7 Lower end 15b Flange 15c Bottom part 15c1 Opening 15c2 Lower edge of opening 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 passes through) Holes 19, 19A Sealing valve 19a Inner peripheral protrusion 19b Annular plate part 19c Outer peripheral wall 19d Communication hole 19Aa Fitting part 19Ab Flange 19Ac Upper surface of flange 19Ad, 19Ae Vertical groove 19B Sealing valve 19Ba Fitting part 19Bb Flange 19Bc Upper surface of flange 19Bf Engagement part 19Bh Vertical groove 19Bi Horizontal groove 19Bg Recessed part 15c2 Lower edge of opening 20 Cap 20a Upper bottom 20b Opening 21 Valve 22 Stem 23 Operation button 24 Housing 24a Lower surface 24b (of the housing) Bottom plate 24c (of the housing) Vertical hole 25 Spring 26 Stem rubber 27 Opening section 27a Bottom surface 27d (of the opening section) Reinforcement plate 28 Seal member 30 Pressurized container 31 Container Main body 29 Passage member 29a Holding member 29a1 Flange 29a2 Peripheral wall 29a3 Bottom portion 29a4 Opening 19C Sealing valve 19Cc Outer peripheral wall

Claims (10)

A pressurized product in which a container is filled with a stock solution and a pressurizing agent and sealed;
and a discharge member detachably attached to the pressurized product,
The discharge member has a housing and a stem housed in the housing so as to be movable up and down, and includes a valve that operates the discharge/stop of the stock solution by operating the stem ,
The container includes a container body and a lid that closes an opening of the container body,
a fitting cylinder portion for forming a seal between the lid body and the valve housing when the discharge member is attached;
A seal provided at the bottom of the fitting cylinder that seals the opening at the bottom of the fitting cylinder when the discharge member is not attached, and is opened when the discharge member is attached and resealed when the discharge member is removed. equipped with a valve,
Discharge device. The sealing valve is made of rubber or synthetic resin elastomer,
A closing portion that elastically contacts and seals the periphery of the lower opening of the fitting cylinder in a natural state and releases the seal when pressed by a discharge member, and a communication portion provided outside the closing portion. The ejection device according to claim 1, comprising: The discharge device according to claim 1 or 2, wherein the sealing valve has a cylindrical outer circumferential wall pressed between an inner circumferential surface of the container body and a lower outer circumferential surface of the fitting cylinder part. 4. The dispensing device according to claim 3, wherein the container body includes an outer container and an inner container accommodated therein, and the outer circumferential wall is compressed by the inner container and a fitting cylindrical portion. The discharge device according to claim 2, wherein the closing portion of the sealing valve is an inner peripheral protrusion that comes into contact with the inner peripheral edge of the opening of the fitting cylinder and is elastically deformed when pressed by the discharge member. The sealing valve is provided so as to be vertically movable between a raised position where the sealing valve is in close contact with the lower end of the fitting cylinder part to form a seal, and a lowered position where a gap is created and the seal is released.
The discharge device according to claim 1. The container body has an outer container and an inner container accommodated therein,
The internal container has a shoulder portion and a neck portion above the shoulder portion, and the neck portion has a diameter reduced midway in the vertical direction,
7. The discharge device according to claim 6, wherein the diameter-reduced portion has a smaller diameter than the outer diameter of the sealing valve. The fitting cylindrical portion has a bottom extending inward from near the lower end, and an opening at the bottom of the fitting cylindrical portion is formed in the bottom;
The sealing valve includes an engaging portion that engages around the opening on the upper surface of the bottom, a flange that tightly contacts the lower surface of the bottom to seal the opening, and a connecting portion that connects the engaging portion and the flange. has
2. The sealing valve according to claim 1, wherein the sealing valve is provided so as to be vertically movable between a raised position where the flange is in close contact with the lower surface of the bottom and a lowered position where a gap is created between the flange and the lower surface of the bottom. Discharge device. The discharge device according to claim 1 or 2, wherein a holding member for supporting a sealing valve is provided at a lower portion of the fitting cylinder portion. 10. The discharge device according to claim 9, further comprising a tubular passage member extending downward from a lower end of the fitting cylinder, and wherein the holding member is provided near the upper end of the passage member.

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