Discharge device

Abstract

To provide a discharge device capable of suppressing leakage of undiluted solution due to removal of a valve.SOLUTION: A discharge device includes a pressurized product 11a in which a container 10 is filled with an undiluted solution C and a pressurizing agent P and sealed, and a discharge member 12 that breaks through the pressurized product 11a and discharges the undiluted solution C, the discharge member 12 includes a valve 21 that serves as a discharge passage for the undiluted solution C, and a cap 20 that covers the valve 21 and is detachably attached to the pressurized product 11a. Either the valve 21 or the pressurized product 11a is provided with engaging means E that maintains the attachment state of the valve 21 to the pressurized product 11a against the pressure of the pressurizing agent P.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a discharge device, and more particularly to a discharge device including a pressurized product in which a concentrate and a pressurizing agent are filled and sealed in a container, and a discharge member that is detachable from the pressurized product. [Background technology]

[0002] Patent Document 1 describes a discharge device in which a discharge member equipped with a valve is attached to a container filled with a concentrate and a pressurizing agent. In this discharge device, the discharge member is detachable from 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 thread provided on the outer periphery of the neck of the container. This makes it possible to reuse the discharge member by removing it from the container after all the concentrate has been dispensed and replacing it with a new container. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2015 / 080252 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the discharge device of Patent Document 1, the discharge member is simply screwed onto the container, so it is possible to remove the discharge member before the product is completely used up. If the cap is removed while the concentrate remains in the container, there is a risk that the concentrate will leak out forcefully.

[0005] The present invention has as its technical object the provision of a discharge device that can prevent the leakage of concentrate when the valve is removed. [Means for solving the problem]

[0006] The discharge devices 10, 30, 50, 60 of the present invention comprise a pressurized product 11a in which a concentrate C and a pressurizing agent P are filled and sealed in a container 11, and a discharge member 12, 112, 212, 312 that pierces the pressurized product 11a and discharges the concentrate C, and the discharge member 12, 112, 212, 312 comprises a valve 21, 121, 221, 321 and a cap 20, 120, 320 that covers the valve 21, 121, 221, 321 and is removably attached to the pressurized product 11a, and in addition to attaching the valve 21, 121, 221, 321 using the cap 20, 120, 320, a maintenance mechanism K is provided for maintaining the valve 21, 121, 221, 321 attached to the pressurized product 11a.

[0007] In such a discharge device, it is preferable that the maintenance mechanism K is provided on either the valve 21, 121, 221 or the pressurized product 11a and has an engagement means E that maintains the attachment state of the valve 21, 121, 221 to the pressurized product 11a against the pressure of the pressurizing agent P.

[0008] It is also preferable that the engaging means E is provided on either the valve 21, 121, 221 or the pressurized product 11a and has an engaging protrusion 27e, 15h (18e, 18g) that engages with the other. The engaging protrusion 18g may be threaded. It is also preferable that the engaging protrusion 27e is provided on the valve 21, the valve 21 breaks through the pressurized product 11a, and the engaging protrusion 27e engages with the edge H1 of a through hole H created by the break-through. It is also preferable that the valve 21 comprises a housing 24 and an opening portion 27 that has an engaging protrusion 27e and is detachable from the housing 24. It is also preferable that the valves 121, 221 are detachable from the pressurized product 11a. Specifically, the engaging protrusions 15h, 18e, 18g are provided on the valves 121, 221 and the pressurized product 11a, and the engaging protrusions 18e, 18g of the valves 121, 221 engage with the engaging protrusion 15h of the pressurized product 11a, thereby engaging the valves 121, 221 with the pressurized product 11a, and it is preferable that a disengagement portion R (15i (18f, 18h)) is provided adjacent to the engaging protrusion 15h (18e, 18g) of either the valve 121, 221 or the pressurized product 11a, which disengages the engaging protrusions 15h, 18e (18g) from each other.

[0009] The maintaining mechanism K may also include an inner cylindrical portion 41 located on the outer periphery of the cap 320, which reduces its inner diameter in conjunction with contraction of the container 11 due to a decrease in internal pressure. In this case, it is preferable that either the inner cylindrical portion 41 or the cap 320 is provided with an engaging protrusion 41a that engages with the other only when the inner diameter of the inner cylindrical portion 41 becomes smaller.

[0010] Another discharge device 70, 80 of the present invention comprises a pressurized product 11a in which a concentrate C and a pressurizing agent P are filled and sealed in a container 11, and a discharge member 12 that pierces the pressurized product 11a to discharge the concentrate C, the discharge member 12 comprising a valve 21 and a cap 20 that covers the valve 21 and is removably attached to the pressurized product 11a, the container 11 comprising a container body 16 and a lid body 415 that closes the opening of the container body 16, the lid body 415 comprising a closing portion 15d that is pierced by the discharge member 12, and a movable lid 81, 91 that covers the closing portion 15d, maintains an open state when the discharge member 12 is attached, and closes when the discharge member 12 is removed.

[0011] Another discharge device 90 of the present invention comprises a pressurized product 11a in which a concentrate C and a pressurizing agent P are filled and sealed in a container 11, and a discharge member 12 that pierces the pressurized product 11a and discharges the concentrate C, the discharge member 12 comprising a valve 21 and a cap 520 that covers the valve 21 and is removably attached to the pressurized product 11a, a recess 513b is provided on one of the cap 520 and the container 11, and a protrusion 520a that fits into the recess 513b is provided on the other, the cap 520 and the container 11 are removably attached by engaging the protrusion 520a with the recess 513b, and the protrusion 520a is pressed against a bottom 513d of the recess 513b by the pressure of the pressurizing agent P.

[0012] Another discharge device 100, 101, 102 of the present invention comprises a pressurized product 11a in which a concentrate C and a pressurizing agent P are filled and sealed in a container 11, and a discharge member 12 that pierces the pressurized product 11a to discharge the concentrate C, the discharge member 12 comprising a valve 21 and a cap 20 that covers the valve 21 and is detachably attached to the pressurized product 11a, the container 11 comprising a container body 16 and a lid 51 that closes the opening of the container body 16. 5, 615, and the lid bodies 515, 615 have a closing portion 15d that is broken by the discharge member 12, and sealing members 92, 93, 94 that open and close the flow path of the concentrate C that is created when the closing portion 15d is broken, and the sealing members 92, 93, 94 maintain the open state of the flow path of the concentrate C when the discharge member 12 is attached, and close the flow path of the concentrate C when the discharge member 12 is removed.

[0013] In the discharge devices 101, 102, the sealing members 93, 94 preferably include receiving portions 93e, 94b for receiving the closing portion 15d separated by the discharge member 12.

[0014] Another discharge device 103 of the present invention comprises a pressurized product 11a in which a concentrate C and a pressurizing agent P are filled and sealed in a container 11, and a discharge member 12 that pierces the pressurized product 11a to discharge the concentrate C, the discharge member 12 comprising a valve 21 and a cap 20 that covers the valve 21 and is removably attached to the pressurized product 11a, the container 11 comprising a container body 16 and a lid body 715 that closes the opening of the container body 16, the lid body 715 comprising a closing portion 15d that is pressed down when the discharge member 12 is attached, a thin-walled portion 15f that is provided around the closing portion 15d and forms a through hole 15u when the discharge member 12 is attached, and a plurality of connecting portions 15g that prevent the closing portion 15d from falling off the lid body 715. [Effects of the Invention]

[0015] In addition to attaching the valve using a cap, the discharge device of the present invention is equipped with a maintenance mechanism for maintaining the valve attached to the pressurized product.In other words, it is equipped with multiple safety devices that prevent the valve from being unintentionally removed from the pressurized product, thereby preventing the concentrate from leaking when the valve is removed.

[0016] Furthermore, since the retention mechanism is provided on either the valve or the pressurized product and has an engagement means that maintains the valve attached to the pressurized product against the pressure of the pressurizing agent, the valve will not come off the pressurized product even if the cap is removed from the pressurized product, which prevents the concentrate from leaking out even if the concentrate remains in the container.

[0017] If the engagement means is provided on either the valve or the pressurized product and has an engagement protrusion that engages with the other, the valve can be maintained attached to the pressurized product with a simple structure. If the engagement protrusion is threaded, the valve and the pressurized product can be screwed together, and the valve's attachment to the pressurized product is stable. If the engagement protrusion is provided on the valve, the valve breaks through the pressurized product, and the engagement protrusion engages with the edge of the through hole created by the break-through, no special work is required to engage the valve and the pressurized product. If the valve has a housing and an opening portion that has an engagement protrusion and is detachable from the housing, the opening portion can remain attached. If the valve is detachable from the pressurized product, the valve can be reused. Engagement protrusions are provided on the valve and the pressurized product, and the valve and the pressurized product are engaged by the engagement protrusions of the valve and the pressurized product, and if a disengagement portion that disengages the engagement protrusions is provided adjacent to the engagement protrusions of either the valve or the pressurized product, the engaged state and disengaged state can be easily switched between by simply shifting the valve relative to the pressurized product.

[0018] If the maintenance mechanism includes an inner cylindrical portion located on the outer periphery of the cap, which reduces its inner diameter in conjunction with the contraction of the container due to a decrease in internal pressure, the cap and inner cylindrical portion will not engage when the internal pressure is high, and the cap and inner cylindrical portion can only engage when the internal pressure decreases, making it impossible to remove the cap from the pressurized product when the internal pressure is high.If either the inner cylindrical portion or the cap is provided with an engagement protrusion that only engages with the other when the inner diameter of the inner cylindrical portion decreases, it will be easy to remove the cap from the pressurized product after the concentrate has been dispensed.

[0019] Another discharge device of the present invention is equipped with a movable lid in which a lid body covers the closing portion, is maintained in an open state when a discharge member is attached, and is closed when the discharge member is removed, thereby preventing the concentrate from leaking even if the discharge member is removed while the concentrate remains.

[0020] In yet another discharge device of the present invention, the pressure of the pressurizing agent presses the protrusion against the bottom of the recess, so that a force greater than the pressure of the pressurizing agent is required to remove the cap, thereby preventing the valve from being unintentionally removed from the pressurized product.

[0021] In yet another discharge device of the present invention, the cover body is provided with a sealing member that opens and closes the flow path of the concentrate that is created when the closing portion is broken, and the sealing member maintains the flow path of the concentrate in an open state when the discharge member is attached, and closes the flow path of the concentrate when the discharge member is removed, so that leakage of the concentrate can be suppressed even if the discharge member is removed while the concentrate remains.

[0022] In the above-mentioned discharge device, if the sealing member has a storage section that stores the closing section that has been separated by the discharge member, the movement of the separated closing section can be restricted, and the closing section can be prevented from interfering with the transition of the flow path of the concentrate to a closed state by the sealing member.

[0023] In yet another discharge device of the present invention, the lid body is provided with a closing portion that is pressed down when the discharge member is attached, a thin-walled portion that is provided around the closing portion and forms a through hole when the discharge member is attached, and a plurality of connecting portions that prevent the closing portion from falling off the lid body, so that the through hole can be blocked by the closing portion that does not fall off, and leakage of the concentrate can be suppressed. [Brief explanation of the drawings]

[0024] [Figure 1] FIG. 1A is a cross-sectional view showing a discharge device of the present invention, and FIG. 1B is a cross-sectional view of a container body used in the discharge device. [Figure 2] 2A is a cross-sectional view of a main part of the discharge member of FIG. 1A, and FIG. 2B is a cross-sectional view of a main part of the pressurized product. [Figure 3] 3A is a cross-sectional view of a main part showing the state of the pressurized product before it is opened, FIG. 3B is a cross-sectional view of a main part showing the state of the pressurized product after it has been opened, and FIG. 3C is a cross-sectional view of a main part showing the state in which the discharge member has been removed from the pressurized product. [Figure 4] 4A is a cross-sectional view of a main part of a pressurized product showing a state before it is opened, and FIG. 4B is a cross-sectional view of a main part of a pressurized product showing a state after it has been opened, according to another embodiment of the discharge device of the present invention. [Figure 5] FIG. 5A is a view of the valve holder viewed from below, and FIG. 5B is a view of the lid viewed from above. [Figure 6] FIG. [Figure 7] FIG. 5 is a cross-sectional view of the discharge device of FIG. [Figure 8] 8A is a cross-sectional view of a main part of a pressurized product showing a state before it is opened, and FIG. 8B is a cross-sectional view of a main part of a pressurized product showing a state after it has been opened, according to another embodiment of the discharge device of the present invention. [Figure 9] 9A is a cross-sectional view of the entire discharge device according to still another embodiment of the present invention, and FIG. 9B is a schematic view showing changes in the engagement state between the inner cylindrical portion and the cap. [Figure 10] FIG. 10 is a cross-sectional view of a main part showing a pressurized product used in yet another embodiment of the discharge device of the present invention. [Figure 11]11A is a cross-sectional view of the main part showing the pressurized product of FIG. 10 in a state after it has been opened, and FIG. 11B is a cross-sectional view of the main part showing the state when the valve is about to be removed from the pressurized product of FIG. [Figure 12] This is a pressurized product used in yet another embodiment of the discharge device of the present invention, in which FIG. 12A is a cross-sectional view of the essential parts, and FIG. 12B is a view of the movable cover as viewed from below. [Figure 13] 13A is a cross-sectional view of the main part showing the pressurized product of FIG. 12 in a state after it has been opened, and FIG. 13B is a cross-sectional view of the main part showing the state when the valve is about to be removed from the pressurized product of FIG. [Figure 14] FIG. 10 is a partial cross-sectional view showing yet another embodiment of a discharge device of the present invention. [Figure 15] FIG. 10 is a cross-sectional view of a main part showing a pressurized product used in yet another embodiment of the discharge device of the present invention. [Figure 16] 16A is a cross-sectional view of the main part showing the pressurized product of FIG. 15 in a state after it has been opened, and FIG. 16B is a cross-sectional view of the main part showing the state when the valve is about to be removed from the pressurized product of FIG. [Figure 17] FIG. 10 is a cross-sectional view of a main part showing a pressurized product used in yet another embodiment of the discharge device of the present invention. [Figure 18] FIG. 18 is a perspective view of the movable cover shown in FIG. [Figure 19] 19A is a cross-sectional view of the main part showing the pressurized product of FIG. 17 in a state after it has been opened, and FIG. 19B is a cross-sectional view of the main part showing the state when the valve is about to be removed from the pressurized product of FIG. [Figure 20] FIG. 10 is a perspective view of a movable lid used in yet another embodiment of the discharge device of the present invention. [Figure 21] 21A is a cross-sectional view of the main part showing the state after the pressurized product has been opened, and FIG. 21B is a cross-sectional view of the main part showing the state when the valve is about to be removed from the pressurized product. [Figure 22] This is a pressurized product used in yet another embodiment of the discharge device of the present invention, in which FIG. 22A is a cross-sectional view of the essential parts, and FIG. 22B is a view of the lid body viewed from below. [Figure 23]23A is a cross-sectional view of the main part showing the pressurized product of FIG. 22 in a state after it has been opened, and FIG. 23B is a cross-sectional view of the main part showing the state when the valve is about to be removed from the pressurized product of FIG. 22. DETAILED DESCRIPTION OF THE INVENTION

[0025] The discharge device 10 shown in FIG. 1A comprises a double pressurized container (container) 11, a discharge member 12, and a concentrate (content) C and a pressurizing agent P filled in the double pressurized container 11. The double pressurized container 11 filled with the concentrate C and the pressurizing agent P is a pressurized product 11a. The pressurized product 11a and the discharge member 12 are sold as an unassembled set (see FIG. 1A) or in a semi-assembled, unopened state (see FIG. 3A). The pressurized product 11a is sold together with the discharge member 12, and is also sold separately as a replacement. Therefore, the pressurized product 11a is sealed to prevent leakage of the concentrate C and pressurizing agent P filled therein until the discharge member 12 is attached (until the product is opened by the discharge member 12). The discharge member 12 is also sometimes sold separately.

[0026] The double pressurized container 11 comprises an outer container 13, a flexible inner container 14 housed inside the outer container 13, and a lid (sealing plate) 15 that seals the outer container 13 and inner container 14. It does not include any valves or pumps. The combination of the outer container 13 and inner container 14 constitutes the container body 16 (see Figure 1B). The interior of the inner container 14 is a concentrate storage chamber Sc filled with concentrate C, and the space between the outer container 13 and inner container 14 is a pressurizing agent storage chamber Sp filled with pressurizing agent P. These are sealed by the lid 15. In other words, this double pressurized container 11 stores the concentrate C and the propellant P separately and allows only the concentrate C to be discharged, thereby preventing leakage of the pressurizing agent P, such as compressed gas.

[0027] As shown in FIG. 1B, the outer container 13 comprises a bottom 13a, a cylindrical body 13b, a shoulder 13c, and a cylindrical neck 13d. A male thread 13e is formed on the outer periphery of the neck 13d. The upper end surface 13f of the neck 13d is generally flat so that a lid 15 can be fixed thereto. In this embodiment, the bottom 13a of the outer container 13 comprises a downwardly protruding annular contact surface 13a1 and an upwardly protruding dome portion 13a2 located at its center. This improves pressure resistance and impact resistance in the event of a drop. This ensures safety during distribution as a single item or delivery by courier. Furthermore, the contact surface 13a1 allows the container to be stably placed on a flat surface, etc. However, a spherical bottom surface is also acceptable.

[0028] As shown in Figure 2B, an annular protrusion 13g is formed on the upper end surface 13f of the neck 13d of the outer container 13. This protrusion increases the contact pressure with the lid 15 during ultrasonic welding, facilitating melting and forming a welded portion for integrating the outer container with the lid 15. The annular protrusion may be provided on the lid 15 side, or on both sides. Furthermore, multiple inclined portions 13h are provided on the inner or outer side of the upper end surface 13f, providing space for containing resin pieces that are formed when the molten resin cools during ultrasonic welding to prevent them from spilling out. An annular support portion 13d1 is provided on the outer periphery of the neck 13d of the outer container 13, providing support during transportation and welding.

[0029] Returning to FIG. 1B, like the outer container 13, the inner container 14 also consists of a bottom 14a, a body 14b, a shoulder 14c, and a neck 14d. The bottom 14a of the inner container 14 also has a downwardly protruding annular recess 14a1 and an upwardly protruding dome 14a2 at its center. There is a slight gap between the outer surface of the neck 14d of the inner container 14 and the inner surface of the neck 13d of the outer container 13. The inner surface of the neck 14d of the inner container 14 is a smooth cylindrical surface. The bottom 14a of the inner container 14 abuts against the bottom 13a of the outer container 13, supporting the inner container 14 so that it does not sag when filling it with a pressurizing agent or when fastening the lid 15.

[0030] As shown in FIG. 2B , the upper end surface 14e of the neck 14d of the inner container 14 protrudes beyond 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 on the protruding portion. The thickness (radial dimension) of the flange 14f is approximately 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 13d of the outer container 13, the outer portion of the upper end surface 13f of the neck 13d of the outer container 13 remains uncovered. The annular protrusion 13g at the upper end of the outer container 13 is provided on that outer portion. The annular protrusion 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 to create a weld with the lid 15.

[0031] Four radially extending horizontal grooves 14h for filling the pressurizing agent are formed at equal intervals on the underside of the flange 14f of the inner container 14. Furthermore, vertical grooves 14i communicating with the horizontal grooves 14h are formed on the outer peripheral surface of the neck 14d of the inner container 14. The vertical grooves 14i extend from the horizontal grooves 14h to the upper end of the shoulder 14c, making it easier to fill the pressurizing agent P into the pressurizing agent storage chamber Sp.

[0032] Both the outer container 13 and the inner container 14 are made of a thermoplastic resin such as polyethylene terephthalate, polyethylene naphthalate, polyethylene, or polypropylene. They can be manufactured, for example, by placing a preform for the inner container inside a preform for the outer container and simultaneously blow-molding the lower portions of the necks 13d and 14d. In particular, injection blow molding, in which a preform of a predetermined shape is injection-molded and then blow-molded, is preferred. Furthermore, by pushing the bottom 13a upward when molding the dome portion 13a2, the annular recess 14a1 of the inner container can be stretched, thinning the wall, and reducing its weight.

[0033] As shown in FIG. 2B, the lid 15 comprises a cylindrical sealing portion 15a with a bottom that is inserted into the neck portion 14d of the inner container 14, and an annular flange 15b that is continuous with the upper end of the sealing portion 15a. The lower portion of the sealing portion 15a is a fitting cylindrical portion 15a1 that has a smaller diameter than the upper portion. The bottom portion of the sealing portion 15a, i.e., the bottom portion 15c of the fitting cylindrical portion 15a1, is provided with a closure portion (openable portion) 15d that has a pressure-receiving portion 15d1 that is thicker than the surrounding area. The closure portion 15d is usually circular in plan view. However, other shapes, such as a rectangle, can also be used.

[0034] The closure portion 15d is surrounded by a thin-walled portion (breakable portion, weakened line) 15f such as an annular groove that can easily be broken. The pressure-receiving portion 15d1 is provided over substantially the entire upper surface of the closure portion 15d, and the thin-walled portion 15f is formed on the upper surface of the bottom portion 15c. The thin-walled portion 15f may also be formed on the lower surface. The thin-walled portion 15f may be, for example, a V-groove. The thin-walled portion 15f is continuous so that it can be torn off when the closure portion 15d is opened, but it may also be discontinuous as long as it can be broken. To prevent the closure portion 15d from falling off or becoming loose after opening, a reinforcing portion extending radially across the weakened line 15f may be provided.

[0035] The outer peripheral surface of the sealing portion 15a is preferably in a fitted state with the inner surface of the neck portion 14d of the inner container 14 so that air can be discharged from the inner container 14 when the lid 15 is attached to the neck portion 14d of the inner container and the concentrate C in the inner container 14 can be liquid-sealed. The inner peripheral surface of the fitting tubular portion 15a1 is preferably a smooth cylindrical surface so that it comes into close contact with the seal member 28 of the valve 21 when the closing portion 15d is opened, preventing leakage of the concentrate C. It may also be tapered, with the diameter decreasing downward.

[0036] After the concentrate C and the pressurizing agent P are filled, the flange 15b of the lid 15 is welded to the upper end surface 13f of the neck 13d of the outer container 13 and the upper end surface 14e of the neck 14d of the inner container 14 by ultrasonic welding, laser welding, high-frequency welding, or other welding method, thereby forming a seal. In this embodiment, an annular protrusion 14g is formed on the upper end surface 14e of the inner container 14, and an annular protrusion 13g is also formed on the upper end surface 13f of the outer container 13, ensuring a reliable seal after welding. Adhesion may also be used to increase airtightness, for example.

[0037] The bottom 15c of the fitting tubular portion 15a1 is located slightly above the lower end of the fitting tubular portion 15a1 to increase the rigidity of the bottom 15c and facilitate breaking of the thin-walled portion 15f. The diameter of the fitting tubular portion 15a1 is smaller than the diameter of the upper part of the sealing portion 15a to increase the molding precision of the inner surface of the fitting tubular portion 15a1 and to reduce the area subjected to internal pressure surrounded by the seal member 28 of the discharge member 12, thereby weakening the upward force applied to the lid body 15. Furthermore, this is to ensure space to accommodate the downward-protruding valve holding portion 18a. The lower end of the fitting tubular portion 15a1 may be cylindrical, but a horizontal groove may be provided to connect the lower end and the bottom 15c to prevent gas from accumulating between them.

[0038] The flange 15b of the lid 15 is composed of an annular disk portion 17 that expands radially outward from the upper end of the sealing portion 15a, and an outer cylindrical portion 17a that extends downward from the outer edge of the annular disk portion 17. The lower surface of the annular disk portion 17 abuts against the upper end surface 14e of the neck portion 14d of the inner container 14 to form a welded portion and seal, and the lower surface of the outer cylindrical portion 17a abuts against the upper end surface 13f of the neck portion 13d of the outer container 13 to form a welded portion and seal.

[0039] The material of the lid 15 is a thermoplastic resin that has high thermal bonding 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 to increase the welding strength. As shown in Figure 1A, the lid 15 seals the concentrate 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, thereby allowing the contents (concentrate C, pressurizing agent P) to be stored safely and leak-proof for a long period of time. The thin-walled portion 15f has a shape that provides sufficient sealing function when unopened, yet can be easily broken.

[0040] Examples of concentrate C include skin care products such as facial cleansers, detergents, bath additives, moisturizers, cleansing agents, sunscreens, lotions, shaving agents, depilatories, antiperspirants, disinfectants, and insect repellents; hair care products such as treatments, styling agents, and hair dyes; food products such as whipped cream and olive oil; household products such as deodorants, air fresheners, insecticides, insect repellents, pollen removers, disinfectants, and cleaners; and industrial products such as lubricants. However, the use of concentrate C is not limited to these. It is preferable that concentrate C contact the inner surface of closure portion 15d. This allows concentrate C to cool closure portion 15d during welding of lid 15 and container body 16, eliminating the problem of closure portion 15d melting due to heat.

[0041] 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 preferably set to 0.1 to 0.5 MPa (gauge pressure, 25°C), and in particular, 0.3 to 0.5 MPa (gauge pressure, 25°C), which is the same pressure as that of a carbonated beverage, using the pressurizing agent. The capacity of the outer container 13 is preferably 30 to 500 ml. The capacity of the inner container (concentrate 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.

[0042] As described above, the double pressurized container 11 has a small number of parts and no moving parts such as valves, making it inexpensive to manufacture. Furthermore, the pressure of the double pressurized container 11 is low, about the same as that of carbonated drinks, making it safe for consumers to carry and distributors to deliver. Furthermore, even if the outer container 13 were to crack, only the pressurizing agent P would leak, and the concentrate C in the inner container 14 would not. This makes it even safer.

[0043] Furthermore, the pressurized product 11a has an outer container 13 and an inner container 14 made of synthetic resin, and the inner container 14 is surrounded by a pressurizing agent P, which is further surrounded by the outer container 13, so the pressurized product 11a is highly elastic and does not easily break even if dropped. Furthermore, because the closing part 15d is located inside, there is little risk of the closing part 15d being accidentally broken, making it even safer.

[0044] As shown in FIG. 2A, the discharge member 12 comprises a cap (attachment part) 20 that screws into the male thread 13e on the neck part 13d of the outer container 13, a valve 21 covered by the cap 20, and an operation button (actuator, reference numeral 23 in FIG. 1A) equipped with a discharge nozzle and attached to a stem 22 of the valve 21. The cap 20 is cylindrical with a bottom and has a female thread formed on its inner circumferential surface. 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 pass. The cap 20 and valve 21 without the operation button 23 attached are treated as a valve unit or valve assembly.

[0045] Valve 21 comprises a cylindrical housing 24 with a bottom, an opening portion 27 detachably attached to housing 24, the aforementioned stem 22 housed therein so as to be able to move up and down, a spring 25 that urges stem 22 upward, a stem rubber 26, and a valve holder 18 equipped with a cylindrical valve holding portion 18a that holds the upper part of housing 24, and forms a discharge passage for concentrate C. Stem 22, spring 25, and stem rubber 26 form a valve mechanism that switches between a discharge state and a non-discharge state of concentrate C, and housing 24 and valve holder 18 form an accommodation space that houses this valve mechanism.

[0046] In this embodiment, a cylindrical tear-open portion 27 that protrudes downward is attached to the lower end of the housing 24. A sealing member 28 such as an O-ring is attached to the outer periphery of the lower part of the housing 24. A bottom surface 27a of the tear-open portion 27 is flattened so as to abut against the upper surface of the pressure-receiving portion 15d1.

[0047] In this embodiment, the diameter of the tear-open portion 27 is slightly larger than that of the pressure-receiving portion 15d1. It is also the same as or slightly larger than the diameter of the area surrounded by the thin-walled portion 15f. An engagement protrusion 27e for engaging with the lid 15 is provided on the outer periphery of the tear-open portion 27. The engagement protrusion 27e is arranged so that the lower end of the valve 21 is arrowhead-shaped, making it easy to insert into the lid 15 and preventing accidental removal. The upper part of the tear-open portion 27 is provided with a cylindrical mounting portion 27f that is mounted to the lower end of the housing 24. The mounting portion 27f is inserted into an insertion hole 24d provided in the lower part of the housing 24.

[0048] The seal member 28 seals the gap between the inner peripheral surface of the fitting cylindrical portion 15a1 of the lid body 15 and the housing 24 during and after opening.

[0049] The housing 24 is provided with a vertical hole 24c that penetrates the bottom plate 24b of the housing 24 in the vertical direction, as a passage that connects the interior of the housing 24 with the concentrate storage chamber Sc in the inner container 14. The planar shape of the vertical hole 24c may be, for example, a substantially fan-shaped. It is preferable to provide multiple vertical holes 24c. This allows communication through the other vertical holes 24c even if one vertical hole 24c is blocked.

[0050] 3A, the height direction position of the bottom surface 27a of the tearing portion 27 is a position where it comes into contact with the pressure-receiving portion 15d1 when the cap 20 is screwed onto the male thread 13e of the outer container 13 about once or twice. Therefore, at the time of shipping or distribution, the cap 20 can be loosely screwed on so as not to rupture the closure portion 15d, and the discharge member 12 and the double pressurized container 11 can be temporarily joined in a sealed state.

[0051] The valve holder 18 includes a valve holding portion 18a, an annular rubber retainer 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 of the rubber retainer 18b. The valve holder 18 is loosely fitted into the cap 20. Specifically, the outer diameter of the flange 18c and the diameter of the inner circumferential surface of the cap 20 are approximately equal, creating slight friction. Therefore, even if the cap 20 is held by itself, the valve holder 18 will not fall off the cap 20. On the other hand, the valve holder 18 can be easily removed from the cap 20. However, the valve holder 18 does not necessarily have to be fitted into the cap 20.

[0052] When a user uses the discharge device 10 they purchased, they first screw the cap 20 onto the male thread 13e of the outer container. This causes the entire cap 20 and the valve 21 to descend, and the bottom surface 27a of the tearing portion 27 presses down on the closing portion 15d. This breaks the thin-walled portion 15f, and the closing portion 15d is torn off from the fitting tubular portion 15a1 and separated from the bottom portion 15c, dropping off. The tearing portion 27 then breaks through the bottom portion 15c of the fitting tubular portion 15a1, connecting the housing 24 with the concentrate storage chamber Sc within the inner container 14 (see FIG. 3B). The fallen closing portion 15d drops to the bottom of the inner container 14. The lower end of the tearing portion 27 penetrates into the inner container 14 through the through-hole H created by breaking through the bottom portion 15c. At this time, the engaging projection 27e also penetrates into the inner container 14 through the through-hole H. However, to prevent the through-hole H from being blocked by the engaging projection 27e, the engaging projection 27e is positioned below the lower surface of the bottom portion 15c, and a gap is formed between the engaging projection 27e and the bottom portion 15c.

[0053] Since the cap 20 is threaded onto the outer 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 tearing portion 27 gradually presses against the pressure-receiving portion 15d1 of the closing portion 15d. Because the lid 15 is made of synthetic resin, the closing portion 15d is easily stretched and difficult to break when gradually pressed due to its extensibility. However, in this embodiment, the closing portion 15d is surrounded by the annular thin-walled portion 15f, and the pressure-receiving portion 15d1 protrudes, increasing the stress concentration on the thin-walled portion 15f and allowing it to break smoothly. Furthermore, because the bottom surface 27a of the tearing portion 27 is flat, it is difficult to deform during the tearing operation, allowing the discharge member 12 to be used repeatedly.

[0054] The closure portion 15d has a thick, approximately circular pressure-receiving portion 15d1 at its upper portion, which is provided on the central axis of the lid body 15, and further abuts against the circular bottom surface 27a of the tearing portion 27. Therefore, when pressure is applied by the bottom surface 27a, the closure portion 15d is pushed straight in and breaks along the thin-walled portion 15f, and the broken closure portion 15d falls off and sinks to the bottom of the inner container 14. However, the pressure-receiving portion 15d1 or the bottom surface 27a of the tearing portion 27 may be inclined so that the thin-walled portions 15f break off sequentially from one side to the other. Also, even if the closure portion 15d does not fall off and remains connected via the thin-walled portion 15f, etc., it is sufficient that the engagement protrusion 27e of the tearing portion can engage with the broken edge H1.

[0055] When the closing portion 15d is broken, concentrate C may leak from the gap between the inner periphery of the bottom portion 15c and the outer periphery of the tear-open portion 27. However, because the fitting tubular portion 15a1 and the housing 24 are sealed with a seal member 28, concentrate C remains within the fitting tubular portion 15a1 and does not leak to the outside. Furthermore, the reaction force at the time of breaking and the internal pressure after breaking act to push up the housing 24, but the cap 20 and the outer container 13 are threadedly engaged, and the upper base 20a of the cap 20 and the valve holder 18 provide double support, preventing the discharge member 12 from popping out. In this state, the valve 21 is attached by the cap 20. Furthermore, deformation of the upper base 20a of the cap 20 is suppressed.

[0056] After attaching the discharge member 12, when the user presses the operation button 23 attached to the stem 22, the stem 22 descends, the stem rubber 26 bends, and the stem hole opens. The concentrate C in the concentrate storage chamber Sc is pressurized by the pressurizing agent P via the internal container 14, and is discharged to the outside via the opening portion 27, housing 24, stem 22, and operation button 23. When the finger is released from the operation button 23, the stem 22 rises and discharge stops. The pressurizing agent storage chamber Sp, which is filled with the pressurizing agent P, is closed by the lid 15 and is not connected to the outside or the concentrate storage chamber Sc, so the pressurizing agent P will not leak to the outside during the discharge operation.

[0057] Furthermore, even if the cap 20 is removed from the outer container 13, the valve 21 will not come off the pressurized product 11a because the engaging projection 27e of the valve 21 engages with the edge H1 of the through-hole H in the lid 15. If a strong pulling force is applied to the valve 21 or if an attempt is made to intentionally remove the valve 21 from the pressurized product 11a, the tear-open portion 27 will come off the housing 24 and maintain the state of blocking the through-hole H (see FIG. 3C). In this state, the tear-open portion 27 maintains the attachment state of the valve 21 to the pressurized product 11a. That is, in the discharge device 10 of the present invention, the valve 21 can be said to have an engagement means E that maintains the attachment state of the valve 21 to the pressurized product 11a against the pressure of the pressurizing agent P. In this state, the engagement projection 27e of the valve 21 and the edge H1 of the through-hole H in the pressurized product 11a constitute the engagement means E that maintains the attachment state of the valve 21 to the pressurized product 11a against the pressure of the pressurizing agent P.

[0058] In this way, the discharge device 10 of the present invention is equipped with a maintenance mechanism K (engagement means E) for maintaining the valve 21 attached to the pressurized product 11a, in addition to attaching the valve 21 using the cap 20, and therefore can more effectively prevent the valve 21 from being unintentionally detached, compared to a device in which the valve 21 is fixed to the pressurized product 11a using only the cap 20.

[0059] After the entire amount of concentrate C has been dispensed, the cap 20 is turned and the dispenser member 12 is removed from the pressurized product 11a. The dispenser member 12 is then attached to a new pressurized product 11a. Note that, because the tear-open portion 27 remains on the pressurized product 11a, when attaching the dispenser member 12 to the new pressurized product 11a, a new tear-open portion 27 is attached to the housing 24, or the valve 21 itself is replaced with a new one.

[0060] Next, another embodiment of the discharge device will be described with reference to Figures 4A and 4B. In the discharge device 30 of Figure 4A, in addition to the valve 121, an engagement protrusion is also provided on the pressurized product 11a. Specifically, an engagement protrusion 15h is provided radially inward from the inner circumferential surface of the sealing portion 15a of the lid body 115. The engagement protrusions 15h are not continuous in the circumferential direction, and gaps 15i are formed between the engagement protrusions 15h, 15h. In this state, it can be said that gaps 15i are provided adjacent to the engagement protrusions 15h. The width of the gaps 15i is wider than the width of the engagement protrusions 18e, which will be described later. Furthermore, it is preferable that the engagement protrusions 15h, 15h are provided at equal intervals from each other (see Figure 5B).

[0061] Engagement protrusions 18e of discharge member 112 are provided radially outward from the outer peripheral surface of valve holding portion 18a of valve holder 118. These engagement protrusions 18e are also not continuous in the circumferential direction, and gaps 18f are formed between engagement protrusions 18e, 18e. In this state, gaps 18f are provided adjacent to engagement protrusions 18e. The width of gaps 18f is wider than engagement protrusions 15h of lid body 115. Furthermore, engagement protrusions 18e, 18e are preferably provided at equal intervals from each other. Furthermore, the pitch is preferably the same as gaps 15i of lid body 115 (see FIG. 5A).

[0062] The pressurized product 11a and the valve 121 configured as described above are assembled as follows. First, the valve 121 is removed from the discharge member 112. The outer diameter of the flange 18c of the valve 121 is smaller than the diameter (inner diameter) of the inner circumferential surface of the cap 120, allowing the valve 121 to be easily removed. Next, the valve 121 is inserted into the sealing portion 15a of the lid body 115. At this time, the engaging protrusion 18e of the valve holder 118 is inserted into the sealing portion 15a through the gap 15i between the engaging protrusions 15h, 15h of the lid body 115 (see S1 in FIG. 6). Then, the valve 121 is pushed in until the upper end of the engaging protrusion 18e of the valve holder 118 is positioned below the lower end of the engaging protrusion 15h of the lid body 115 (see S2 in FIG. 6), and the valve 121 is rotated around its axis to engage the engaging protrusions 15h, 18e with each other (see S3 in FIG. 6). In this state, as shown in Figure 4B, the opening portion 127 breaks through the closing portion 15d. However, because the engaging projections 15h and 18e are engaged with each other, the valve 121 does not come off the pressurized product 11a, and the concentrate C does not leak out. Thereafter, the cap 120 is placed over the valve 121 and screwed onto the outer container 13 to complete the assembly.

[0063] In the discharge device 30 configured as described above, even if the cap 120 is removed during use, the valve 121 will not come off the pressurized product 11a because the engagement projection 18e of the valve 121 is engaged with the engagement projection 15h of the lid body 115. In other words, it can be said that both the valve 121 and the pressurized product 11a are provided with the engagement means E that maintains the attachment state of the valve 121 to the pressurized product 11a against the pressure of the pressurizing agent P. It can also be said that this state is constituted by the engagement projection 18e of the valve 121 and the engagement projection 15h of the pressurized product 11a forming the engagement means E that maintains the attachment state of the valve 121 to the pressurized product 11a against the pressure of the pressurizing agent P.

[0064] In this way, the discharge device 30 of the present invention also has, in addition to attaching the valve 121 using the cap 120, a maintenance mechanism K (engagement means E) for maintaining the valve 121 attached to the pressurized product 11a, and therefore can more effectively prevent the valve 121 from coming off unintentionally compared to a device in which the valve 121 is fixed to the pressurized product 11a only by the cap 120.

[0065] Since the outer diameter of the flange portion 18c of the valve holder 118 is smaller than the inner diameter of the cap 120, unintentional rotation (co-rotation) of the valve 121 due to attachment or detachment of the cap 120 is suppressed, and misalignment of the engagement protrusions 15h, 18e relative to each other can be prevented. An engagement maintaining means may be provided to prevent unintentional disengagement of the engagement protrusions 15h, 18e due to attachment or detachment of the cap 120. The engagement maintaining means may be, for example, a protrusion 15j or a recess 15k provided on the underside of the engagement protrusion 15h of the pressurized product 11a (the surface that abuts against the engagement protrusion 18e of the valve 121) (see dashed dotted lines in FIG. 6). If the engagement protrusion 18e of the valve 121 is wider than the engagement protrusion 15h of the pressurized product 11a, a protrusion or a recess may be provided on the engagement protrusion 18e of the valve 121. Furthermore, the surfaces of the engagement protrusions 15h, 18e that abut against each other may be roughened to prevent slippage.

[0066] After the entire amount of concentrate C has been dispensed, the cap 120 is turned and the dispensing member 112 is removed from the pressurized product 11a. At this time, the valve 121 is rotated about its axis, and the engaging protrusion 18e of the valve 121 is positioned in the gap 15i between the engaging protrusions 15h, 15h of the lid body 115, thereby disengaging (disengaging) the engaging protrusions 15h, 18e from each other. Note that this state can also be said to be a state in which the engaging protrusion 15h of the lid body 115 is positioned in the gap 18f between the engaging protrusions 18e, 18e of the valve 121, thereby disengaging the engaging protrusions 15h, 18e from each other. In this way, if the gap 15i (18f) between the engaging protrusions 15h, 15h (18e, 18e) functions as a disengagement portion R for disengaging the engaging protrusion 18e (15h), removal of the valve 121 becomes easy. The removed discharge member 112 is washed appropriately and attached to a new pressurized product 11a.

[0067] 7, the discharge member 112 is equipped with a lever-type operating mechanism 40 for operating the stem 22. The operating mechanism 40 has a cover portion 42 that extends downward from the peripheral wall of the cap 120 and covers the shoulder portion of the container body 16, and a support wall 43 that extends upward from the cap 120. The rear end of an operating lever 44 is rotatably connected to the rear end of the upper part of the support wall 43 via a hinge or a pin.

[0068] A spray nozzle 46 is attached to the top of the operating lever 44. The spray nozzle 46 is attached to the front end of an L-shaped passage member 47, the lower end of which is fitted into the stem 22. When a user grips the cover portion 42 or the container body 16 and pulls the operating lever 44, the operating lever 44 rotates downward around the rear end, opening the valve 121 via the passage member 47 and discharging. Discharge stops when the operation is stopped. Such a lever-operated operating mechanism 40 is mainly used for spraying insecticides, deodorizing air fresheners, etc. into the air. Such a lever-operated operating mechanism 40 can also be used in the pressurized product 11a of FIG. 1A.

[0069] In this embodiment, the diameter of the tearing portion 127 is somewhat smaller than the pressure-receiving portion 15d1 and the closing portion 15d. It is also somewhat smaller than the diameter of the area surrounded by the thin-walled portion 15f. As a result, when the tearing portion is broken, the bottom surface 27a of the tearing portion 127 abuts against the outer periphery of the bottom 15c, which is closer to the thin-walled portion 15f, and does not interfere with the pushing of the pressure-receiving portion 15d1. Furthermore, after the tearing portion is broken, the bottom surface 27a of the tearing portion 127 can protrude downward from the opening formed by the tearing, making it easier to ensure a passage for the concentrate C (see FIG. 4B).

[0070] A plurality of reinforcing plates 27d are provided radially between the cylindrical tearing portion 127 and the underside 24a of the housing 124. The number of reinforcing plates 27d is preferably 3 to 5. The reinforcing plates 27d are approximately triangular in side view, and their lower ends do not reach the lower end of the tearing portion 127, so that the vicinity of the lower end of the tearing portion 127 remains cylindrical.

[0071] Other configurations of the discharge device 30 of this embodiment are similar to those of the discharge device 10 of Fig. 1. Therefore, the same reference numerals are used and detailed description will be omitted.

[0072] Next, another embodiment of the discharge device will be described with reference to Figures 8A and 8B. In the discharge device 50 of Figure 8A, the engagement protrusion 18g of the valve 221 is screw-shaped (spiral-shaped). The screw direction is the same as the male thread 13e of the outer container 13, for example, a right-handed thread. However, it may be opposite in direction. In this case, co-rotation of the cap 120 and the valve 221 is reliably prevented. The engagement protrusion 15h of the lid body 215 is arranged singly or in a scattered manner so as to be able to screw into the engagement protrusion 18g of the valve 221. The engagement protrusion 15h of the lid body 215 may also be screw-shaped.

[0073] To assemble the discharge device 50 having the above configuration, the valve 221 is inserted into the sealing portion 15a of the lid body 215, and the valve holder 218 is rotated so that the engaging protrusion 15h of the lid body 215 screws into the engaging protrusion 18g of the valve 221. When the valve holder 218 is rotated until the flange 18c abuts against the top surface of the lid body 215, the unsealing portion 127 breaks through the closing portion 15d, and the concentrate C can be sprayed.

[0074] In this embodiment of the discharge device 50, the outer peripheral surface of the flange 18c of the valve holder 218 does not abut against the inner peripheral surface of the cap 120, so even if the cap 120 is removed halfway through, the valve holder 218 will not rotate with the cap. When the concentrate C inside the inner container 14 is emptied and the valve 221 is to be removed, the valve holder 218 can be rotated in the opposite direction to when it was screwed on, thereby releasing the engagement between the engagement protrusion 15h of the lid body 215 and the engagement protrusion 18g of the valve 221.

[0075] In this configuration, the engagement protrusion 15h of the lid 215 and the engagement protrusion 18g of the valve 221 function as engagement means E, which allows the valve 221 to remain attached to the pressurized product 11a against the pressure of the pressurizing agent P. Furthermore, because the engagement protrusion 18g of the valve 221 is threaded, the valve 221 can be easily engaged with and disengaged from the pressurized product 11a simply by rotating the valve holder 218 in the opposite direction. Therefore, the gap 18h between the threads of the threaded engagement protrusion 18g also functions as a disengagement portion R, which allows the engagement with the engagement protrusion 15h to be released by rotating the valve holder 218 in the opposite direction. The above effect is similar even if the engagement protrusion 15h of the lid 215 is threaded.

[0076] It is also possible to provide a screw-like engaging protrusion on only one of the valve 221 (valve holder 218) or the pressurized product 11a (lid 215), and to carve a thread groove on the other when screwing in. In this case, it is not necessary to provide an engaging protrusion on the other side in advance.

[0077] As described above, in the discharge device 50 of the present invention, in addition to the attachment of the valve 221 by the cap 120, a maintaining mechanism K (engagement means E) for maintaining the attachment state of the valve 221 to the pressurized product 11a is provided, and therefore, unintentional removal of the valve 221 can be more effectively prevented than in a case where the valve 221 is fixed to the pressurized product 11a only by the cap 120. Furthermore, the discharge member 212 can be reused.

[0078] Other configurations of the discharge device 50 of this embodiment are similar to those of the discharge device 10 of Fig. 4. Therefore, the same reference numerals are used and detailed description will be omitted.

[0079] Next, another embodiment of the discharge device will be described with reference to Figures 9A and 9B. In the discharge device 60 of Figure 9A, the cap 320 and the operating mechanism 340 are separate entities. The operating mechanism 340 includes an inner cylindrical portion 41 positioned on the outer periphery of the cap 320 so as to cover the cap 320, and a cover portion 42 extending downward from the inner cylindrical portion 41 (toward the body portion 13b of the outer container 13).

[0080] The inner cylinder 41 is generally cylindrical, and as shown in Fig. 9B, engaging protrusions 41a are provided on the inner peripheral surface. These engaging protrusions 41a are preferably provided at the lower end (on the barrel 13b side) of the inner cylinder 41. It is also preferable to provide a plurality of engaging protrusions 41a at equal intervals. Grooves 20e that engage with the engaging protrusions 41a are provided on the outer peripheral surface of the cap 320. These grooves 20e are provided generally parallel to the axial direction of the cap 320. It is preferable that the arrangement intervals be the same as or closer than the engaging protrusions 41a.

[0081] The cover part 42 is substantially cylindrical, with its upper end connected to the outer periphery of the cylindrical part 41 and its lower end fitted onto the body part 13b of the outer container 13 of the double pressurized container 11. The inner diameter of the lower end of the cover part 42 is substantially the same as or slightly smaller than the outer diameter of the body part 13b before the concentrate C and the pressurizing agent P are filled in.

[0082] Incidentally, the body 13b of the outer container 13 expands to increase its outer diameter when filled with the concentrate C and the pressurizing agent P. Therefore, when the cover 42 is fitted onto the body 13b, the cover 42 expands in diameter. The inner tube 41, which is integrated with the cover 42, also expands in diameter. In this state, as shown in the left diagram of FIG. 9B , the engaging protrusion 41a is not engaged with the groove 20e. Therefore, even if the operating mechanism 340 is rotated around its axis, the cap 320 cannot be rotated. Therefore, the cap 320 cannot be removed from the pressurized product 11a, and the valve 321 remains attached to the pressurized product 11a.

[0083] When the concentrate C is discharged and the pressure inside the double pressurized container 11 drops, the outer container 13 contracts, reducing the outer diameter of the body 13b (see the two-dot chain line in FIG. 9A). This causes the cover 42 to contract, reducing the inner diameter of the inner tube 41, which is integrated with the cover 42. As a result, the engaging projection 41a of the inner tube 41 fits into the groove of the cap 320 (see the right diagram in FIG. 9B). This state is the first time the cap 320 and the inner tube 41 engage. The cap 320 can then be rotated by rotating the operating mechanism 340 around its axis. Therefore, the discharge member 312 can be removed from the pressurized product 11a and reused. It is preferable to engage the engaging projection 41a with the groove 20e after the concentrate C has been discharged.

[0084] In this way, in the discharge device 60 of this embodiment, a maintenance mechanism K for maintaining the attachment state of the valve 321 to the pressurized product 11a is formed by the inner tube part 41, which reduces its inner diameter in conjunction with the contraction of the double pressurized container 11 as the internal pressure decreases. More specifically, the maintenance mechanism K is formed by the cover part 42 that fits over the double pressurized container 11 and contracts as the double pressurized container 11 contracts as the internal pressure decreases, and the inner tube part 41 that is integrated with the cover part 42 and contracts as the cover part 42 contracts.

[0085] Other configurations of the discharge device 60 of this embodiment are similar to those of the discharge device 30 of FIG. 7. Therefore, the same reference numerals are used and detailed description will be omitted. The valve 321 is the same as that of FIG. 4. However, the valves of FIG. 2 and FIG. 8 may also be used. Furthermore, the engaging means E may not be provided. Furthermore, an engaging protrusion may be provided on the outer peripheral surface of the cap 320, and a groove may be provided on the inner peripheral surface of the inner cylindrical portion 41. Furthermore, an engaging protrusion may be provided on each of the outer peripheral surface of the cap 320 and the inner peripheral surface of the inner cylindrical portion 41, and the engaging protrusions may engage with each other. Furthermore, instead of the engaging protrusions 41a, the inner peripheral surface of the inner cylindrical portion 41 and the outer peripheral surface of the cap 320 may be roughened, or a material with a high friction coefficient, such as rubber, may be interposed therebetween.

[0086] In the double pressure vessel 11 shown in FIG. 10, the shape of the lid 415 is different from the other double pressure vessels 11 described above. Specifically, a substantially cylindrical sealing portion 15a extends downward, and a fitting tubular portion 15a1 is concentrically provided inside the sealing portion 15a. The fitting tubular portion 15a1 rises upward from the center of the bottom of the sealing portion 15a and opens at the top end. The upper portion of the sealing portion 15a is substantially cylindrical, and the inner surface of the lower portion 15a3 is tapered downward. However, the entire surface may be cylindrical. The outer surface of the lower portion 15a3 is tapered downward, but is cylindrical at the bottom. Hereinafter, this cylindrical portion will be referred to as the cylindrical portion 15a2.

[0087] This lid 415 has a fitting tubular portion 15a1 provided inside the sealing portion 15a, and the lower end 15a4 of the tapered lower portion 15a3 and the lower end of the lower tubular portion 15a5 extending downward from the fitting tubular portion 15a1 are connected by a connecting portion 15a6. The closing portion 15d is provided on the bottom portion 15c, which closes the lower tubular portion 15a5 slightly above its lower end. Therefore, when a horn is pressed against the top surface of the lid 415 for ultrasonic welding, the vibrations of the horn pass through the sealing portion 15a and easily flow from its lower end 15a4 to the concentrate C side. Furthermore, because the closing portion 15d is provided above the connecting portion 15a6, the vibrations are less likely to be transmitted to the closing portion 15d. This prevents the weakened wire 15f from dissolving or penetrating.

[0088] Furthermore, the cover 415 has a vertically extending groove 15n formed in the upper portion of the fitting cylindrical portion 15a1. The upper end of this groove 15n reaches the upper portion of the fitting cylindrical portion 15a1. On the other hand, the lower end of the groove 15n does not reach the bottom portion 15c. In other words, no groove 15n is formed in the lower portion of the fitting cylindrical portion 15a1. This is because, when the closing portion 15d is opened by the valve 21, a liquid-tight seal is already formed between the fitting cylindrical portion 15a1 and the valve 21 by the seal member 28 (see FIG. 11A). For example, the lower end of the groove 15n may be positioned upstream (downstream) of the position of the seal member 28 when the valve 21 first contacts the closing portion 15d. The number of grooves 15n may be one or more.

[0089] The lid body 15 is equipped with a movable lid 81. The movable lid 81 is cup-shaped and includes a bottom portion 82 having the same shape as the cylindrical portion 15a2 of the sealing portion 15a, and a side wall portion 83 rising from the bottom portion 82. The movable lid 81 is slidably fitted onto the cylindrical portion 15a2. A communication passage (slit) 83a is provided in the side wall portion 83 of the movable lid 81. This slit extends downward from the upper end of the side wall portion 83 but does not reach the bottom portion 82, and the side wall portion 83 is continuous in the circumferential direction near the bottom portion 82. The communication passage 83a is not limited to a slit, and may be a hole penetrating the side wall portion 83.

[0090] The valve holder 18 of the discharge device 70 is the same as that shown in Fig. 4A except that it does not have an engaging protrusion 18e. The cap 20, valve 21, and container body 16 are the same as those shown in Fig. 4A.

[0091] In the discharge device 70 having the above configuration, as with the other discharge devices 10 to 60, the pressurized product 11a is opened by screwing the cap 20 onto the male thread 13e of the outer container 13. At this time, the closing portion 15d is pushed into the opening portion 27, and as shown in FIG. 11A, the pushed closing portion 15d pushes the movable lid 81 downward, moving it. The thin-walled portion 15f is C-shaped, and the connecting portion (the portion other than the thin-walled portion 15f) 15g serves as a fulcrum, so the movable range (range) of the closing portion 15d is limited to a certain range. The length of the fitting portion between the side wall portion 83 and the cylindrical portion 15a2 is longer than the movable range of the closing portion 15d, so the movable lid 81 will not fall off the lid body 15. Alternatively, the opening portion 27 may directly push down the movable lid 81. Since a communication passage 83a is provided in the side wall portion 83, when the movable lid 81 moves downward, the inside of the inner container 14 and the inside of the movable lid 81 communicate with each other via the communication passage 83a (see the arrow in FIG. 11A). Therefore, when the user presses down on the stem 22, the concentrate C is discharged from the stem 22.

[0092] When the cap 20 is completely attached to the pressurized product 11a, i.e., before loosening (removal) of the cap 20, the sealing member 28 is located below (upstream of) the recessed groove 15n. Therefore, the interior of the internal container 14 is not in communication with the outside (outside air) through the space between the fitting tubular portion 15a1 and the valve 21. On the other hand, as the cap 20 is loosened (removal) begins, the entire valve 21 moves upward. Before the cap 20 is removed from the pressurized product 11a (while the cap 20 is still threaded onto the male thread 13e), the sealing member 28 reaches the recessed groove 15n, establishing communication between the interior of the internal container 14 and the outside (outside air) (see the arrow in FIG. 11B). This creates a pressure difference between the interior of the internal container 14 and the interior of the movable lid 81. Specifically, the pressure inside the movable lid 81 becomes smaller than the pressure inside the internal container 14, and the movable lid 81 is drawn toward the valve 21 (upward). In other words, the movable lid 81 is forced upward by the pressure inside the inner container 14. As a result, the communication path 83a is blocked by the cylindrical portion 15a2, and the communication state between the inside of the inner container 14 and the outside (outside air) is lost. At this time, the tearing portion 27 has already separated from the closing portion 15d, and the tearing portion 27 does not prevent the movable lid 81 from sliding.

[0093] As described above, this discharge device 70 is provided with a movable lid 81 that covers the closure portion 15d from the side of the inner container 14, and this movable lid 81 is maintained in an open state when the discharge member 12 is attached and is closed when the discharge member 12 is removed, so that the concentrate C can be prevented from leaking even if the cap 20 is loosened or removed while the concentrate C remains in the inner container 14. Furthermore, if the loosened or removed cap 20 is reattached, the opening portion 27 pushes the movable lid 81 back toward the inner container 14, allowing the concentrate C to be discharged from the stem 22.

[0094] The neck 14d of the inner container 14 of the double-pressurized container 11 shown in FIG. 12A is shaped to fit closely to the outer circumferential surface of the sealing portion 15a. It consists of a cylindrical upper portion 14d1, a tapered portion 14d2 that narrows downward, and an expanded diameter portion 14d4 that gradually expands in diameter from its lower end. The lower end of the expanded diameter portion 14d4 is continuous with the shoulder portion 14c. That is, the tapered portion 14d2, the expanded diameter portion 14d4, and the upper portion of the shoulder portion 14c of the neck 14d of the inner container 14 form a constricted portion. This constricted portion is in close contact with the lower portion 15a3 of the lid 415. Therefore, when the inner container 14 is filled with the concentrate C, the gas phase (headspace) is small. The lid 415 does not include a cylindrical portion 15a2.

[0095] The movable cover 91 is in the form of a film. Its thickness is, for example, 0.2 to 2 mm. It is preferably made of the same material as the cover 415, but a different material may also be used. The movable cover 91 is welded to the bottom end of the cover 415 as shown in FIG. 12B . However, it may also be glued. The bottom end of the cover 415 is provided with a notch 15q. The notch 15q is provided in a roughly C-shape when the cover 415 is viewed from below. The notch 15q is provided so as to avoid the outer edge of the cover 415. Therefore, the portion without the notch 15q is continuous in an annular shape. If the portion without the notch 15q is defined as an annular wall 15r, only a portion of the annular wall 15r widens toward the center of the circle. The wide portion 15s and the connecting portion 15g, which serves as a fulcrum when the closing portion 15d rotates, are aligned in the same straight line when viewed from the center of the cover 415. The movable lid 91 is welded to both the wide portion 15s and the narrow portion 15t that is narrower than the wide portion 15s.

[0096] In the discharge device 80 having the above configuration, similar to the other discharge devices 10-70, the pressurized product 11a is opened by screwing the cap 20 onto the male thread 13e of the outer container 13. During this process, the closing portion 15d is pushed into the opening portion 27, and as shown in FIG. 13A, the pushed closing portion 15d pushes down the movable lid 91. Because the connecting portion 15g and the wide portion 15s are aligned in the same line (in the same direction as viewed from the center of the lid 415), the downward force is primarily applied to the narrow portion 15t rather than the wide portion 15s. Furthermore, the narrow portion 15t has a smaller welding area than the wide portion 15s and is therefore more likely to peel off. Therefore, the movable lid 91 gradually peels off from the narrow portion 15t, establishing communication between the interior of the inner container 14 and the interior of the movable lid 91 (see the arrow in FIG. 13A). In this state, if the user pushes down the stem 22, the concentrate C is dispensed from the stem 22. Since the wide portion 15s is close to the connecting portion 15g and receives almost no force, the movable cover 91 maintains at least the welded connection with the wide portion 15s and does not fall off the cover body 415.

[0097] In this discharge device 80, as the cap 20 is loosened (removed), the entire valve 21 moves upward, and before the cap 20 is removed from the pressurized product 11a (while the cap 20 is still threaded onto the male thread 13e), the sealing member 28 reaches the recessed groove 15n, establishing communication between the interior of the inner container 14 and the outside (outside air) (see the arrow in Figure 13B). This causes the movable lid 91 to be drawn toward the valve 21 (upward). In other words, the movable lid 91 is forced upward by the pressure within the inner container 14. As a result, the movable lid 91 abuts against the lower end of the lid body 415. In particular, the outer peripheral surface of the movable lid 91 abuts against the inside of the annular wall 15r, eliminating communication between the interior of the inner container 14 and the outside (outside air). At this time, the tearing portion 27 has already separated from the closing portion 15d, and the tearing portion 27 does not interfere with the sliding of the movable lid 91.

[0098] As described above, this discharge device 80 also includes a movable lid 91 that covers the closure portion 15d from the inner container 14 side, and this movable lid 91 is maintained in an open state when the discharge member 12 is attached and is closed when the discharge member 12 is removed, so that the concentrate C can be prevented from leaking even if the cap 20 is loosened or removed while the concentrate C remains in the inner container 14. Furthermore, if the loosened or removed cap 20 is reattached, the opening portion 27 pushes the movable lid 91 back toward the inner container 14, allowing the concentrate C to be discharged from the stem 22.

[0099] Other configurations are the same as those of the discharge device in FIG. 11, so the same reference numerals are used and the description will be omitted.

[0100] In the discharge device 90 of FIG. 14, an engagement protrusion 513a is provided on the outer peripheral surface of the neck portion 13d of the outer container 513, and an engagement claw 520a that engages with this engagement protrusion 513a is provided on the inner peripheral surface of the cap 520. The lower surface of the engagement protrusion 513a serves as an engagement portion that engages with the engagement claw 520a. The lower surface is formed with a recess 513b that is recessed upward at the center. In other words, downward-protruding guide portions 513c are provided at both left and right ends, so that the engagement state will not be released simply by moving the engagement claw 520a left and right. The upper surface of the engagement protrusion 513a is roof-shaped with a convex center. Multiple engagement protrusions 513a are provided around the circumferential direction of the neck portion 13d. The engagement claws 520a have a width that allows them to fit into the recesses 513b of the engagement protrusions 513a. Furthermore, multiple engagement claws 520a are provided at the same intervals as the engagement protrusions 513a.

[0101] To open the pressurized product 11a, the cap 520 is pushed downward with the valve 21 attached to the cap 520. At this time, it is preferable to position the engagement claw 520a in the gap between the engagement protrusions 513a. When the cap 520 is pushed down completely, the opening portion 27 pushes the closure portion 15d, and the pressurized product 11a is opened (see FIG. 11A). Then, when the engagement claw 520a is positioned below the engagement protrusions 513a, the cap 520 is rotated horizontally to engage the engagement claw 520a with the engagement protrusions 513a. After the pressurized product 11a is opened, the pressure of the pressurizing agent P continues to be applied to the cap 520 via the valve 21, so that the engagement claw 520a is pressed against the bottom 513d of the recess 513b. Therefore, even if an attempt is made to disengage the engagement protrusions 513a and the engagement claw 520a, the engagement protrusions 513a and the engagement claw 520a cannot be easily disengaged. This prevents the cap 520 from being removed from the pressurized product 11a while the concentrate C remains. The same effect can be obtained by providing an engaging protrusion 513a on the cap 520 and an engaging claw 520a on the outer container 513. That is, the same effect can be obtained if a recess 513b is provided on one of the cap 520 and the double pressurized container 511, and a protrusion (520a) that fits into the recess 513b is provided on the other.

[0102] In the discharge device 90 having the above configuration, the pressure of the pressurizing agent P drops when all of the concentrate C is discharged, making it easier to remove the cap 520. After use, the cap 520, valve holder 18, and valve 21 are removed and attached to a new pressurized product separately.

[0103] Other configurations are the same as those of the discharge device in FIG. 11, so the same reference numerals are used and the description will be omitted.

[0104] The neck 14d of the inner container 14 of the double pressurized container 11 shown in Figure 15 is shaped to fit closely to the outer circumferential surface of the sealing portion 15a, and includes a cylindrical upper portion 14d1, a tapered portion 14d2 that tapers downward, and a hanging portion 14d3 that extends straight downward from the lower end of the tapered portion 14d2. The lower end of the hanging portion 14d3 is continuous with the shoulder portion 14c. Even with this configuration, the gas phase (headspace) can be reduced when the inner container 14 is filled with the concentrate C.

[0105] The lid 515 includes a lower tube portion 15a7 extending downward from the connecting portion 15a6. The lower end of the lower tube portion 15a7 is located near the boundary between the neck portion 14d and the shoulder portion 14c. The lower tube portion 15a7 is generally cylindrical and can hold a spherical sealing member 92 in a cylindrical space within it so that the sealing member 92 can move up and down. The lower tube portion 15a7 also includes a claw portion 15a8 protruding radially inward from near its lower end to prevent the sealing member 92 from falling off the lower tube portion 15a7. The lower tube portion 15a7 also includes a slit 15a9 extending vertically (in the axial direction of the lower tube portion 15a7) to ensure a passage for the concentrate C when the sealing member 92 is not in contact with the lower stage portion 15a10. The slit 15a9 also functions as a passage for dropping the closing portion 15d, which has been separated from the bottom portion 15c, into the container body 14. The inner diameter of lower cylindrical portion 15a6 is larger than the diameter of sealing member 92. On the other hand, the inner diameter of connecting portion 15a6 is smaller than the diameter of sealing member 92. A step (lower step 15a10) is provided between connecting portion 15a6 and lower cylindrical portion 15a7. Sealing member 92 makes annular contact with lower step 15a10, forming a seal when the two are in contact. Lower step 15a10 is located downstream of slit 15a9, and when sealing member 92 contacts lower step 15a10, the flow path of concentrate C toward housing 124 is blocked. This lid 515 differs from lid 415 of FIG. 12A in that it does not include connecting portion 15g, notch 15q, annular wall 15r, or wide portion 15s. However, the other configurations are the same as those of lid 415 of FIG. 12A.

[0106] In the discharge device 100 having the above configuration, similar to the other discharge devices 10 to 80, the pressurized product 11a is opened by screwing the cap 20 onto the male thread 13e of the outer container 13. Specifically, the closing portion 15d is pushed into the opening portion 27 and separated from the bottom portion 15c, forming a through-hole H. The formation of the through-hole H forms a flow path for the concentrate C that connects the interior of the inner container 14 to the interior of the housing 124. The separated closing portion 15d passes through the slit 15a9 and falls into the inner container 14. The opening portion 27 also pushes down the sealing member 92, connecting the interior of the inner container 14 and the interior of the housing 124 via the slit 15a9 (see the arrow in FIG. 16A ). In this state, when a user presses down on the stem 22, the concentrate C is dispensed from the stem 22.

[0107] Furthermore, in this discharge device 100, as the cap 20 is loosened (removed), the entire valve 21 moves upward, and before the cap 20 is removed from the pressurized product 11a (while the cap 20 is still threaded onto the male thread 13e), the sealing member 28 reaches the recessed groove 15n, establishing communication between the interior of the internal container 14 and the outside (outside air) (see the arrow in FIG. 16B). This causes the sealing member 92 to be drawn toward the valve 21 (upward). In other words, the sealing member 92 is forced upward by the pressure within the internal container 14. As a result, the sealing member 92 comes into contact with the lower portion 15a10 of the lid 515, blocking the flow path of the concentrate C and eliminating communication between the interior of the internal container 14 and the outside (outside air).

[0108] As described above, in this discharge device 100, a sealing member 92 is provided upstream of the through-hole H created by the attachment of the discharge member 12, and the sealing member 92 moves upstream when the discharge member 12 is attached to maintain an open state of the flow path of the concentrate C, and moves downstream under the pressure of the pressurizing agent P when the discharge member 12 is removed to close the flow path of the concentrate C. Therefore, even if the cap 20 is loosened or removed while the concentrate C remains in the inner container 14, leakage of the concentrate C can be prevented. Note that if the loosened or removed cap 20 is reattached, the sealing member 92 is again pushed toward the inner container 14 by the opening portion 27, allowing the concentrate C to be discharged from the stem 22.

[0109] Furthermore, the lid 515 is located within the neck 14d, which is less likely to shrink and where the concentrate C is likely to remain, and the lower end of the lid 515, the lower cylindrical portion 15a7, extends to the vicinity of the boundary between the neck 14d and the shoulder 14c, and further the space within the lower cylindrical portion 15a7 is occupied by the sealing member 92, thereby reducing the amount of concentrate C remaining within the neck 14d. As the other components are similar to those of the discharge device 80 in Fig. 13, the same reference numerals are used and their description will be omitted.

[0110] The double pressure vessel 11 shown in FIG. 17 uses a sealing member 93 having a substantially cylindrical shape. As shown in FIG. 18, the sealing member 93 includes an inner portion 93a, an outer peripheral portion 93b positioned on the outer periphery of the inner portion 93a, and a raised portion 93d having an annular shape in a plan view and rising upward from the inner portion 93a. The thickness (axial length) of the inner portion 93a is greater than the thickness of the outer peripheral portion 93b. The diameter of the inner portion 93a is greater than the inner diameter of the connecting portion 15a6. Therefore, when the inner portion 93a moves upstream (downstream), the upper surface of the inner portion 93a comes into annular contact with the lower surface of the lower portion 15a10. The raised portion 93d is provided within an area smaller than the inner diameter of the connecting portion 15a6 in a plan view, and therefore does not interfere with the contact between the inner portion 93a and the lower portion 15a10. Furthermore, the upper surface of the outer peripheral portion 93b is located lower than the upper surface of the inner portion 93a and therefore does not contact the lower surface of the lower portion 15a10. The outer diameter of the outer peripheral portion 93b is sized to allow the sealing member 93 to move up and down within the lower tube portion 15a7. At the same time, the claws 15a8 are sized to prevent the sealing member 93 from falling off the lower tube portion 15a7. A vertical groove 93c is formed in the outer peripheral portion 93b, ensuring a passage for the concentrate C when the sealing member 93 is not in contact with the lower tube portion 15a10. While no slit is formed in the lower tube portion 15a7 of the lid 615 in FIG. 17, such a slit may be provided. In this case, the vertical groove 93c does not have to be provided. Essentially, it is sufficient that a passage connecting the interior of the internal container 14 and the interior of the housing 124 is formed when the sealing member 93 is not in contact with the lower portion 15a10. Other configurations are similar to those of the lid 515 in FIG. 15.

[0111] In the discharge device 101 having the above configuration, as with the other discharge devices 100 described above, the pressurized product 11a is opened by screwing the cap 20 onto the male threads 13e of the outer container 13. Specifically, the closing portion 15d is pushed into the opening portion 27 and separated from the bottom portion 15c, forming a through-hole H. The closing portion 15d separated from the bottom portion 15c is accommodated in a accommodating portion 93e formed by the upper surface of the inner portion 93a and the inner circumferential surface of the rising portion 93d. The formation of the through-hole H forms a flow path for the concentrate C that leads from the interior of the inner container 14 to the interior of the housing 124. Then, as shown in FIG. 19A , the sealing member 93 is pushed down by the opening portion 27. Specifically, the separated closing portion 15d is positioned between the opening portion 27 and the sealing member 93, and the sealing member 93 is pushed down via the closing portion 15d. In this state, the interior of the inner container 14 and the interior of the housing 124 communicate with each other via the vertical groove 93c (see the arrow in FIG. 19A). Therefore, when the user presses down on the stem 22, the concentrate C is discharged from the stem 22.

[0112] Furthermore, in this discharge device 101, as the cap 20 is loosened (removed), the entire valve 21 moves upward, and before the cap 20 is removed from the pressurized product 11a (while the cap 20 is still threaded onto the male thread 13e), the sealing member 28 reaches the recessed groove 15n, establishing communication between the interior of the internal container 14 and the outside (outside air) (see the arrow in FIG. 19B). This causes the sealing member 93 to be drawn toward the valve 21 (upward). In other words, the sealing member 93 is forced upward by the pressure within the internal container 14. As a result, the sealing member 93 comes into contact with the lower portion 15a10, forming a seal at the contact portion, thereby eliminating communication between the interior of the internal container 14 and the outside (outside air). At this time, the separated closing portion 15d is contained in the containing portion 93e, and its movement in the lateral direction (towards the lower portion 15a10) is restricted, so that the closing portion 15d does not interfere with the transition of the flow path of the raw liquid C by the sealing member 93 to a closed state, i.e., the abutment between the upper surface of the inner portion 93a and the lower surface of the lower portion 15a10.

[0113] In this manner, this discharge device 101 also has a sealing member 93 upstream of the through-hole H created by the attachment of the discharge member 12, and the sealing member 93 moves upstream when the discharge member 12 is attached to maintain an open state of the flow path of the concentrate C, and moves downstream under the pressure of the pressurizing agent P when the discharge member 12 is removed to close the flow path of the concentrate C. Therefore, even if the cap 20 is loosened or removed while the concentrate C remains in the inner container 14, leakage of the concentrate C can be prevented. Note that if the loosened or removed cap 20 is reattached, the sealing member 93 is again pushed toward the inner container 14 by the opening portion 27, allowing the concentrate C to be discharged from the stem 22.

[0114] Furthermore, the lid 615 is located within the neck 14d, which is less likely to shrink and where the concentrate C is likely to remain, and the lower end of the lid 615, the lower cylindrical portion 15a7, extends to the vicinity of the boundary between the neck 14d and the shoulder 14c, and further the space within the lower cylindrical portion 15a7 is occupied by the sealing member 93, thereby reducing the amount of concentrate C remaining within the neck 14d. Other components that are the same as those in the discharge device 100 of Fig. 16 are designated by the same reference numerals and description thereof will be omitted.

[0115] The sealing member 94 shown in Fig. 20 differs from the sealing member 93 of Fig. 18 in that it includes a protruding portion 94a. The protruding portion 94a protrudes upward from the inner portion 93a. Although the protruding portion 94a is located at the center of the inner portion 93a, it does not necessarily have to be at the center, as long as it is located in a position that abuts the bottom surface 27a of the tear-open portion 27. The storage portion 94b is formed by a recessed groove provided around the protruding portion 94a. The size of the storage portion 94b is large enough to store the closing portion 15g.

[0116] In the case of a discharge device 102 using the sealing member 94 configured as described above, the closing portion 15d separated from the bottom portion 15c enters the accommodation portion 94b as shown in Figures 21A and 21B. This makes it possible to restrict the free movement of the closing portion 15d within the space between the bottom portion 15c and the sealing member 94, and to prevent the closing portion 15d from interfering with the contact (seal formation) between the upper surface of the inner portion 93a and the lower surface of the lower portion 15a10. Specifically, when the cap 20 is fully closed (when the cap 20 is completely attached to the pressurized container 11a), the tear-open portion 27 directly abuts against the upper surface of the tear-open portion 94a, and the upper surface of the inner portion 93a moves away from the lower surface of the lower portion 15a10 (see FIG. 21A), and when the cap 20 is loosened (when the sealing member 28 is approaching the recessed groove 15n), the tear-open portion 27 moves away from the upper surface of the tear-open portion 94a, and the upper surface of the inner portion 93a abuts against the lower surface of the lower portion 15a10 (see FIG. 21B). Therefore, the length of the tear-open portion 27 is adjusted so that the tear-open portion 27 abuts against the upper surface of the tear-open portion 94a, and the upper surface of the inner portion 93a moves away from the lower surface of the lower portion 15a10 (see FIG. 21B). Therefore, the discharge device 102 also exhibits the same effects as the discharge devices 100 and 101.

[0117] Other configurations are the same as those of the discharge device 101 in FIG. 19, so the same reference numerals are used and the description will be omitted.

[0118] 22A, a plurality of connecting portions 15g are provided so that the thin-walled portions 15f of the lid 715 are not continuous in an annular shape. The connecting portions 15g are preferably provided at equal intervals in the circumferential direction. The connecting portions 15g are thicker than the thin-walled portions 15f.

[0119] In the discharge device 103 using the double-pressurized container 11 configured as described above, as shown in FIG. 23A, when the tearing portion 27 presses down on the closing portion 15d, the thin-walled portion 15f breaks, forming a through-hole 15u around the closing portion 15d. However, the connecting portion 15g does not break, and the closing portion 15d remains connected to the bottom portion 15c and does not fall off. In particular, because multiple connecting portions 15g are provided, the closing portion 15d does not tilt, and the upper surface of the tearing portion 15d and the bottom surface 27a of the tearing portion 27 always maintain contact. Furthermore, the connecting portions 15g are elastically stretched. Therefore, the connecting portions 15g have a restoring force that causes them to return to their original length. Therefore, when the cap 20 is removed and the tearing portion 27 moves upward, the stretched connecting portions 15g shorten in accordance with the movement of the tearing portion 27. When the connecting portions 15g return to their original length, the through-hole 15u is automatically closed (see FIG. 23B). Furthermore, depending on the type of concentrate C, the elasticity of connecting portion 15g may decrease, making it difficult for connecting portion 15g to return to its original length. However, because closing portion 15d is subjected to pressure from pressurizing agent P, connecting portion 15g is constantly biased upward, and closing portion 15d is likely to block through-hole 15u.

[0120] In this way, by providing thin-walled portion 15f for forming through hole 15u around closing portion 15d and providing multiple connecting portions 15g around closing portion 15d, an open / close mechanism is formed in which through hole 15u is maintained in an open state by attaching discharge member 12 and through hole 15u is closed or the opening area of ​​through hole 15u is significantly reduced by removing discharge member 12. Therefore, with discharge device 10 configured as described above, leakage of concentrate C can be suppressed even if cap 20 is removed while concentrate C remains.

[0121] Other components are the same as those of the discharge device 100 in FIG. 16 except that the sealing member 92 and the lower cylindrical portion 15a7 are not provided, so the same reference numerals are used and detailed description thereof will be omitted.

[0122] 11 and 13, the valve mechanism B that opens and closes the flow path of the concentrate C is formed by the movable covers 82 and 83; the discharge devices 100, 101 and 102 in Figures 16, 19 and 21, the sealing members 92, 93 and 94 and the lower portion 15a10; and the discharge device 103 in Figure 23, the closing portion 15d and the connecting portion 15g. Therefore, it can also be said that in these discharge devices, the cover 15 is provided with the valve mechanism B that opens and closes the flow path of the concentrate C that is formed by the attachment of the discharge member 12, and the valve mechanism B is opened when the discharge member 12 is attached and closed when the discharge member 12 is removed.

[0123] While 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, the outer container 13 and the caps 20, 120, and 320 do not have to be threaded together. For example, the outer container 13 may be provided with a male thread or groove, and the caps 20, 120, and 320 may be provided with multiple protrusions. The protrusions may be aligned with the male thread or groove, and the caps 20, 120, and 320 may be twisted to tighten the caps. Furthermore, various known structures may be employed as long as they allow the caps 20, 120, and 320 to be attached and detached to the pressurized product 11a.

[0124] Also, for example, in the above embodiment, the lid 15 is welded to both the inner container 14 and the outer container 13, but it may be fixed to one of them and simply sealed with an O-ring or the like to the other. Also, in the above embodiment, the inner container 14 and the outer container 13 are manufactured by blow molding simultaneously, but they may be manufactured separately and then the inner container may be placed inside the outer container, or the inner container may be blow molded inside the molded outer container. In the above embodiment, a cylindrical opening portion 27 is used, but it may be any rod-shaped portion such as a rectangular column. [Explanation of symbols]

[0125] 10 Discharge device 11 Double pressurized vessel 11a Pressurized Products 12 Discharge member C stock solution P Pressurizing agent 13 Outer container 13a bottom 13a1 Ground plane 13a2 Dome section 13b Torso 13c Shoulder 13d neck 13d1 Support Department 13e Male thread 13f Upper end surface of neck 13g Annular protrusion 13h Slope section 14 Inner container Sc Concentrate Containment Chamber Sp pressurizing agent storage chamber 14a bottom 14a1 hollow 14a2 Dome section 14b Torso 14c Shoulder 14d Neck 14e Top surface 14f flange 14g annular protrusion 14h Yokomizo 14i vertical groove 15 Lid 15a Sealing part 15a1 Fitting cylinder part 15b flange 15c bottom 15d Closure 15d1 Pressure receiving part 15f Thin-walled part (fracture part) 15g connection part 16 Container body 17 Annular disc section 17a Outer cylinder 18 Valve holder 18a Valve holder 18b Rubber holder 18c flange 18d (stem hole) 18e Engagement protrusion 18f Gap between engaging protrusions 20 Cap (attachment part) 20a upper bottom 20b opening 21 Valve 22 Stem 23 Operation buttons 24 Housing 24a (Housing) Bottom 24b (Housing) Bottom Plate 24c vertical hole 24d insertion hole 25 springs 26 Stem Rubber 27 Opening section 27a (bottom of opening) 27d Reinforcement plate 27e Engagement protrusion 27f Mounting part 28 Sealing material H through hole H1 Edge of through hole E Engagement means K maintenance mechanism 30 Discharge device 112 Discharge member 115 Lid 15h Engagement protrusion 15i Gap between engaging projections 15j protrusion 15k recess 118 Valve holder 120 Cap 121 Valve 124 Housing 127 Opening section R disengagement part 40 Operating mechanism 42 Cover part 43 Supporting wall 44 Operating lever 46 nozzles 47 Passageway components 50 Discharge device 212 Discharge member 215 Lid 218 Valve holder 18g Engagement protrusion (screw-shaped) 18h thread clearance 221 Valve 60 Discharge device 312 Discharge member 320 Cap 20e groove 321 Valve 340 Operation mechanism 41 Inner cylinder 41a Engaging protrusion 70 Discharge device 81 Movable lid 82 Bottom 83 Side wall 83a Communication path 415 Lid 15a2 Cylindrical part 15a3 tapered bottom 15a4 bottom edge 15a5 Lower tube 15a6 Connecting part 15n concave groove 80 Discharge device 91 Movable lid 14d1 Cylindrical top 14d2 tapered section 14d4 Expanded diameter part 15q notch 15r Circular Wall 15s wide part 15t Narrow part 90 Discharge device 511 Double pressurized vessel 513 Outer Container 513a Engagement protrusion 513b Recess 513c Guide part 513d Bottom of the recess 520 Cap 520a Engagement claw (protrusion) 100 Discharge device 515 Lid 15a7 Lower cylinder part 15a8 Claw part 15a9 Slit 15a10 Lower section 92 Sealing member 101 Discharge device 615 Lid 93 Sealing member 93a Inside part 93b Outer periphery 93c vertical groove 93d Rising part 93e Storage section 94 Sealing member 94a Protrusion 94b Storage section 103 Discharge device 715 Lid 15u through hole B valve mechanism

Claims

1. a pressurized product in which the concentrate and the pressurizing agent are filled in a container and sealed; a discharge member that breaks through the pressurized product and discharges the concentrate; the discharge member comprises a valve and a cap covering the valve and removably attached to the pressurized product; The container comprises a container body and a lid body that closes an opening of the container body, the lid body includes a closing portion that is broken by the discharge member, and a valve mechanism that opens and closes a flow path of the concentrate that is created when the closing portion is broken, The valve mechanism is in an open state when the discharge member is attached, and in a closed state when the discharge member is removed.

2. a pressurized product in which the concentrate and the pressurizing agent are filled in a container and sealed; a discharge member that breaks through the pressurized product and discharges the concentrate; the discharge member comprises a valve and a cap covering the valve and removably attached to the pressurized product; The container comprises a container body and a lid body that closes an opening of the container body, the lid body includes a closing portion that is broken by the discharge member, and a sealing member that opens and closes a flow path of the concentrate when the closing portion is broken, The sealing member maintains the flow path of the concentrate in an open state when the discharge member is attached, and closes the flow path of the concentrate in a closed state when the discharge member is removed.

3. The discharge device of claim 2 , wherein the sealing member comprises a receiving portion for receiving the closure portion separated by the discharge member.

4. a pressurized product in which the concentrate and the pressurizing agent are filled in a container and sealed; a discharge member that breaks through the pressurized product and discharges the concentrate; the discharge member comprises a valve and a cap covering the valve and removably attached to the pressurized product; The container comprises a container body and a lid body that closes an opening of the container body, The discharge device, wherein the lid body comprises a closing portion that is broken by the discharge member, and a movable lid that covers the closing portion, maintains an open state when the discharge member is attached, and closes when the discharge member is removed.

5. a pressurized product in which the concentrate and the pressurizing agent are filled in a container and sealed; a discharge member that breaks through the pressurized product and discharges the concentrate; the discharge member comprises a valve and a cap covering the valve and removably attached to the pressurized product; The container comprises a container body and a lid body that closes an opening of the container body, the lid body includes a closing portion that is pressed down when the discharge member is attached, a thin portion that is provided around the closing portion and forms a through hole when the discharge member is attached, and a plurality of connecting portions that prevent the closing portion from falling off the lid body, The discharge device wherein the through hole is maintained in an open state when the discharge member is attached, and the through hole is closed or the opening area of ​​the through hole is significantly reduced when the discharge member is removed.

Images