JP7021945B2 - Discharge container with screw cap - Google Patents

Description

The present invention relates to a discharge container for filling a stock solution and a pressurizing agent, and particularly to a discharge container in which the mouth of the container body is closed with a screw cap.

Patent Document 1 discloses that in an aerosol product in which a container body is filled with a stock solution and a pressurizing agent, the mouth portion of the container body is closed with a screw cap (screw cap). The screw cap is fixed to the container body by screwing a female screw provided on the inner circumference into a male screw provided on the outer periphery of the neck of the container body. In addition, the vertical inner surface (seal surface) provided below the female screw presses the O-ring held on the outer periphery of the neck of the container body inward in the horizontal direction to form a seal with the container body. There is. Patent Document 2 describes that a screw cap is used in a double aerosol product in which a stock solution and a pressurizing agent are separately filled. Patent Document 3 describes that a screw cap is used for an aerosol product using a pressure replenishment mechanism.

Japanese Unexamined Patent Publication No. 2017-013796 Japanese Unexamined Patent Publication No. 2016-3038 International Publication No. WO2017 / 061538

By the way, in the case of a multi-layer bottle product of Patent Document 1 having an internal pressure in which the container body is closed with a screw cap, it is originally required to discharge the entire contents and then remove the screw cap. However, the screw cap may be accidentally removed when the internal pressure remains. In that case, if you loosen the screw, the seal will be released and the ejection will start with the screw screwed. Therefore, even if the screw cap is accidentally removed, there is an advantage that the screw cap can be prevented from coming off.

However, when the screw cap is loosened, not only the gas but also the remaining undiluted solution may be discharged together, and in that case, there is a problem that the undiluted solution is scattered around and polluted. The aerosol products of Patent Document 2 and Patent Document 3 have the same problem.

Therefore, an object of the present invention is to provide a discharge container capable of suppressing scattering of the contents around the contents even when the screw cap is to be removed while the internal pressure remains.

In order to solve the above problems, the discharge container of the present application includes container bodies 11 and 22 for filling the stock solution C and the pressurizing agent P, and valve assemblies 12 and 25 attached to the container bodies 11 and 22. O-ring holding portions of the discharge vessels 10, 10A, 10B, 40, 50, which hold the male screw 11f and the O-ring 13 below the male screw 11f on the outer periphery of the neck portion 11d of the container main bodies 11 and 22. 11 g is formed, and the valve assemblies 12 and 25 include a valve mechanism 14 and a screw cap 15 for attaching the valve mechanism 14 to the container main bodies 11 and 22, and the screw cap 15 is the container main body 11. It is provided with a female screw 15e screwed with a male screw 11f of 22 and a tubular portion 15a formed with a sealing surface 15f for horizontally pressing the O-ring 13 held by the O-ring holding portion 11g. Around the neck portion 11d, a tubular shielding wall 15d for partitioning an annular space is provided below the tubular portion 15a.

The container bodies 11 and 22 are double bottles composed of an outer bottle 23 and an inner bottle 24, and the space between the outer bottle 23 and the inner bottle 24 is screwed with the male screw 11f and the female screw 15e. It is preferable that the threaded portion communicates with the threaded portion.

A holder 42 for accommodating the gas container 44 for adjusting the internal pressure is provided inside the container body 11, and the undiluted solution C in the container body 11 is supplied to the valve mechanism 14 by attaching the valve assembly 12 to the container body 11. It is preferable that a stock solution passage is formed.

It is preferable that the shielding wall 15d extends downward from the lower end of the tubular portion 15a of the screw cap 15.

A bottom cap 52 that can be attached to the screw cap 15 is detachably provided on the bottom of the container bodies 11 and 22, and the bottom cap 52 has an outer diameter larger than the outer diameter of the screw cap 15. It has an inner cylinder portion 53 that fits together with the screw cap 15 and an inner cylinder portion 53, and when the bottom cap 52 is fitted to the screw cap 15 in an inverted state, the lower portion of the outer cylinder portion 54 is the shielding wall. It may be set to.

A flange 11j extending outward is provided below the O-ring holding portion 11g on the outer periphery of the neck portion 24d, and a gap G is provided between the outer peripheral surface of the flange 11j and the inner peripheral surface of the shielding wall 15d. It is preferable to have.

In that case, it is preferable that the length L1 between the lower end of the shielding wall 15d and the lower end of the flange 11j is longer than the length L2 between the lower end of the O-ring 13 and the tubular portion 15a.

In the discharge container of the present invention, since a cylindrical shielding wall for partitioning an annular space is provided around the neck portion, the screw cap is loosened and the lower end of the sealing surface rises to O-ring. Even if it comes off the ring, the pressurizing agent and the undiluted solution ejected from the gap are blocked by the shielding wall and flow out downward. Therefore, the pressure agent and the undiluted solution are suppressed from being scattered around.

The container body is a double bottle consisting of an outer bottle and an inner bottle, and the space between the outer bottle and the inner bottle and the screw portion where the male screw and the female screw are screwed are communicated with each other. In this case, even if the undiluted solution invades the screw portion, the shielding wall can suppress the undiluted solution from scattering around. Therefore, the space can be filled with the undiluted solution, and the space can be filled with the pressurizing agent, so that the degree of freedom is high. That is, when the space is filled with the undiluted solution, the undiluted solution always easily invades the screw portion, but the shielding wall prevents the undiluted solution from scattering. Even when the space is filled with a pressurizing agent, if the inner bottle and the outer bottle communicate with each other before the O-ring seal is released when the screw cap is loosened, the undiluted solution of the inner bottle invades the screw portion. However, the shielding wall prevents the scattering.

When a holder for accommodating a gas container for adjusting internal pressure is provided inside the container body, and a valve assembly is attached to the container body to form a stock solution passage for supplying the stock solution in the container body to the valve mechanism. Even if the undiluted solution in the container body is exhausted, the pressure agent is replenished in the container body and has a constant pressure, so when the screw cap is loosened, it invades the screw part from the undiluted solution passage. The undiluted solution spouts. However, even in that case, the shielding wall blocks the pressure agent and the undiluted solution from splashing around, and does not pollute the surroundings.

If the shielding wall extends downward from the lower end of the tubular portion of the screw cap, the shielding wall can be realized with a simple configuration and operation is easy.

A bottom cap that can be attached to the screw cap is detachably provided on the bottom of the container body, and the bottom cap can rotate together with the outer cylinder part that has an outer diameter larger than the outer diameter of the screw cap and the screw cap. When the bottom cap is fitted to the screw cap in the inverted state, if the lower part of the outer cylinder serves as the shielding wall, the screw cap is fitted with a bottom cap having a large diameter. Easy to turn. Furthermore, since it is easy to widen the space surrounded by the shielding wall, it is possible to further suppress the scattering of undiluted solution and the like.

If a flange is provided below the O-ring holding portion on the outer periphery of the mouth portion and a gap is provided between the outer peripheral surface of the flange and the inner peripheral surface of the shielding wall, the undiluted solution or Since the pressurizing agent can be discharged downward from the gap between the shielding wall and the flange, it is possible to further suppress the scattering. In that case, if the length between the lower end of the shielding wall and the lower end of the flange is made longer than the length between the lower end of the ring and the tubular portion, the contact between the O-ring and the sealing surface is disengaged and the seal is released. However, since the shielding wall surrounds the flange, it is possible to further suppress the scattering.

FIG. 1A is a cross-sectional view of a discharge container according to an embodiment of the present invention, and FIG. 1B is an enlarged view of the vicinity of a screw. It is an enlarged view which shows the seal state and the state which loosens a screw cap and releases a seal. It is sectional drawing of the main part which shows the seal state and the seal release state of the discharge container which concerns on a different embodiment of this invention. It is a partially omitted sectional view of the discharge container which concerns on a different embodiment of this invention. It is sectional drawing of the discharge container which concerns on a different embodiment of this invention. FIG. 6A is a cross-sectional view of a discharge container according to a further different embodiment of the present invention, and FIG. 6B is a cross-sectional view showing a state of the discharge container after discharge of the undiluted solution.

Next, an embodiment of the discharge container of the present invention will be described in detail with reference to the drawings. The discharge container 10 shown in FIGS. 1A, 1B and 2 is an O-ring that seals between the container body 11, the valve assembly 12 attached to the mouth portion 11e of the container body 11, and the container body 11 and the valve assembly 12. It consists of a ring 13.

The container body 11 is formed from a synthetic resin (thermoplastic resin) such as polyethylene terephthalate (PET), polyethylene (PE), polypropylene (PP), and polyamide (PA) by blow molding or the like, and has a bottom portion 11a and a body. It consists of a portion 11b, a shoulder portion 11c and a cylindrical neck portion 11d. The vicinity of the upper end of the neck portion 11d is the mouth portion 11e described above. The top surface of the mouth portion 11e is flat, and the inner peripheral surface is a smooth cylindrical surface. A male screw 11f made of a spiral ridge is formed on the outer peripheral surface of the neck portion 11d. An O-ring holding portion 11g for holding the O-ring 13 is formed below the male screw 11f.

The O-ring holding portion 11g is a square groove (O-ring groove) continuous in the circumferential direction, and has a bottom surface 11h (vertical surface) parallel to the sealing surface 15f of the screw cap 15 described later and two side walls 11i parallel to each other. It is composed of 11i (horizontal plane) (see FIG. 1B). Below the O-ring holding portion 11g, the flange 11j extends outward in the horizontal direction. The flange 11j is used in the filling process of the contents and when the container body 11 is suspended during transportation. It does not have to be (see Fig. 3).

The valve assembly 12 includes a valve mechanism 14 and a screw cap 15. The valve mechanism 14 includes a valve housing 16, a stem 17 that is vertically movable inside the valve housing 16, an elastic body 18 that urges the stem 17 upward, and a stem rubber 19 that opens and closes the stem hole 17a. The valve housing 16 is substantially cup-shaped and has an open upper end. The stem 17 and the elastic body 18 are housed inside through this opening. Further, the diameter of the vicinity of the upper end of the valve housing 16 is expanded to support the ring-shaped stem rubber 19. Further, a hole is formed in the bottom surface to communicate with the inside of the container body 11. A dip tube 20 is connected to the lower end of the valve housing 16.

The screw cap 15 is formed by molding a synthetic resin (thermoplastic resin) such as polypropylene (PP) or polyacetal (POM), and has a tubular portion 15a that covers the outer periphery of the mouth portion 11e and the neck portion 11d of the container body 11. A substantially cup-shaped valve holding portion 15b for holding the valve mechanism 14, a ring portion 15c connecting the upper end of the tubular portion 15a and the lower end of the valve holding portion 15b, and an O-ring 13 extending downward from the lower end of the tubular portion 15a. It is composed of a tubular shielding wall 15d having an inner diameter larger than the outer diameter. A female screw 15e made of a spiral ridge is formed on the inner surface of the tubular portion 15a. The female screw 15e corresponds to the male screw 11f on the outer circumference of the neck portion 11e.

Below the female screw 15e, a sealing surface 15f parallel to and perpendicular to the bottom surface 11h of the O-ring holding portion 11g is provided. The O-ring 13 is pressed horizontally by the sealing surface 15f to seal between the screw cap 15 and the neck portion 11d of the container body 11. If the sealing surface 15f is formed of a vertical surface (smooth surface without a step) in this way, the O-ring 13 will not be twisted when the screw cap 15 is screwed into the container body 11. An engaging protrusion 15g for locking the valve housing 16 is provided on the inner peripheral surface of the valve holding portion 15b. Further, an opening for projecting the stem 17 to the outside is provided in the center of the upper surface of the valve holding portion 15b.

As shown in FIG. 2, the shielding wall 15d has a cylindrical shape having an inner diameter D2 larger than the diameter D1 of the flange 11j. The shielding wall 15d is continuous with the cylinder portion 15a via a step portion extending outward in the radial direction from the lower end of the cylinder portion 15a. As a result, an annular space S having a substantially rectangular or trapezoidal cross section is formed, which is surrounded by the outer peripheral surface of the neck portion 11a, the lower surface of the step portion, the inner surface of the shielding wall 15d, and the upper surface of the flange 11j. The gap G between the outer peripheral surface of the flange 11j and the inner surface of the shielding wall 15d is relatively narrow, about 0.3 to 2 mm. Therefore, the flow path formed by the gap G faces downward. However, since the gap G is formed on the entire circumference, the flow path area is wide and the flow velocity of the undiluted solution or the pressurizing agent is slow. Further, the shielding wall 15d extends downward beyond the flange 11j.

As shown in FIG. 2, the length L1 at which the shielding wall 15d protrudes from the lower surface of the flange 11j is longer than the length L2 from the lower end of the tubular portion 15a (the lower end of the sealing surface 15f) to the O-ring 13. Therefore, even when the screw cap 15 rises, the step portion moves upward from the O-ring 13, and the seal surface 15f and the O-ring 13 are released from the seal, the lower portion of the shielding wall 15d faces the periphery of the flange 11j. The length is set to the extent that it maintains the state of being in place or longer. Therefore, the undiluted solution and the pressurizing agent that come out downward from the gap G do not scatter to the surroundings. Further, when the seal is released, the annular space S becomes large and functions as a buffer zone for relaxing the momentum of the jet. When the step portion of the shielding wall 15d and the flange 11j first come into contact with each other and there is almost no space, the space S is created by the ascent of the shielding wall 15d. When the cap 15 is raised to some extent, the undiluted solution C and the pressurizing agent P that come out from the gap between the sealing surface 15f and the O-ring 13 are blocked from the radial outward flow by the shielding wall 15d and do not scatter to the surroundings.

The discharge container 1 having the above configuration is filled with the undiluted solution C and the pressurizing agent P, and the discharge member 21 is attached to the valve assembly 12 to obtain a discharge product. The undiluted solution C is not particularly limited as long as it is a fluid. It may be a low-viscosity liquid or a high-viscosity fluid such as cream or gel. Undiluted solutions include air spray liquids such as fragrances, deodorants, and insecticides, daily agents such as shampoos, conditioners, and shavings, antiperspirants, lotions, astringents, moisturizers, and skin care products such as sunscreens. , Hair spray, hair cream, hair care such as hair oil, anti-inflammatory analgesic, chemical solution such as anti-itch, edible products such as olive oil and the like.

Examples of the pressurizing agent P include compressed gas such as nitrogen, compressed air, carbon dioxide gas, and nitrous oxide, liquefied petroleum gas, dimethyl ether, and liquefied gas such as hydrofluoroolefin. The pressure after filling is, for example, about 0.3 to 1.0 MPa at 25 ° C. The pressurizing agent P can be filled from the stem 17.

The discharge member 21 is a so-called push button, which is a mounting portion 21a for mounting on the stem 17, a spraying mechanism 21b for discharging the contents in a mist form, and a continuous passage 21c extending from the mounting portion 21a to the spraying mechanism 21b. And have. When the discharge member (push button) 21 is pushed down, the stem 17 is pushed down, the stem hole 17a blocked by the stem rubber 19 is opened, and the contents (stock solution C and pressurizing agent P) are introduced from inside the container body 11. It is discharged to the outside via the valve mechanism 14 and the discharge member 21. The discharge member 21 can be appropriately replaced with a known one depending on the contents. For example, the spray mechanism 21b may not be provided.

After discharging the entire contents, the user rotates the screw cap 15 to remove it from the container body 11. This facilitates separate disposal, eliminates residual pressure, and enables safe recycling. Even if the undiluted solution in the container body 11 seems to be exhausted, the male screw 11f and the screw cap 15 of the container body 1 are transported or stored in an inverted state, or shaken up and down by the consumer. Some stock solution C may remain between the female threads 15e. In that case, when the screw cap 15 is removed, especially at the moment when the sealing surface 15f comes off from the O-ring 13, the contents are ejected from a slight gap between the O-ring 13 and the lower end of the tubular portion 15a. However, since there is a space S that functions as a buffer as described above, the contents do not immediately go out to the outside, but are discharged into the space S, and then flow out through the gap G between the flange 11j and the sealing surface 15f.

As described above, the gap G is annular and has a large flow path area, so that the flow velocity is slow. Therefore, the scattering to the surroundings is suppressed. If the shielding wall 15d is long and still continues below the flange 11j when the seal is released, the contents coming out of the annular gap G will flow downward along the shielding wall 15d and will be scattered around. Is further suppressed. Then, after the ejection of the contents is completed to some extent and the internal pressure is almost eliminated, the contents slowly flow out even if the shielding wall 15d is higher than the flange 11j, so that the scattering of the contents is suppressed. After that, the screw cap 15 can be removed from the container body 11, and the container body 11 made of a synthetic resin material or the like can be collected for recycling.

The container body 11 described above is provided with a flange 11j under the male screw 11f, and the shielding wall 15d is sized to surround the outer periphery of the flange 11j. On the other hand, in the case of the container body 10A having no flange as shown in FIG. 3, the shielding wall 15d may have a small diameter. For example, after the sealing surface 15f is removed from the O-ring 13, it is sufficient that there is a gap between the shielding wall 15d and the O-ring 13 from which the contents can escape. Therefore, the sealing surface 15f and the shielding wall 15d can be made continuous with a low step. In addition to the stepped step, it can be an inclined surface as shown by an imaginary line.

In the discharge container 10B shown in FIG. 4, the container body 22 is a double bottle. In the discharge container 10 of FIGS. 1A and 1B, the stock solution and the pressurizing agent are filled together in the container body 11, but in the discharge container 10B of FIG. 4, the container body 22 is filled with the pressurizing agent P. It is a double bottle composed of an inner bottle 24 and an outer bottle 23 that fills the space between the inner bottle 24 with the stock solution C. The outer bottle 23 has a male screw 11f for screwing the screw cap 15 around the neck 11d, except that the bottom 11a is hemispherical, and the screw cap 15 is an O-ring 13 arranged around the neck 11d. Since it is substantially the same as the container body 11 of the discharge container 10 of the above embodiment, the point of sealing between the sealing surface 15f and the point of providing the shielding wall 15d at the lower end of the screw cap 15, the same reference numerals are given. A specific description will be omitted.

The inner bottle 24 is formed of, for example, a synthetic resin (thermoplastic resin) such as polyethylene terephthalate (PET), polyethylene (PE), polypropylene (PP), polyamide (PA) by blow molding or the like, and has a bottom portion. It is composed of 24a, a body portion 24b, a shoulder portion 24c, and a cylindrical neck portion 24d. A mouth portion 24e is provided near the upper end of the neck portion 24d of the inner bottle 24. The inner peripheral surface of the mouth portion 24e is a smooth cylindrical surface. The mouth portion 24e has a flange portion 24f extending in the out-of-diameter direction. The upper surface of the mouth portion 24e including the flange portion 24f constitutes the top surface of the inner bottle 24. This top surface is flat.

The flange portion 24f is engaged with the top surface of the mouth portion 11e of the outer bottle 23. A vertical groove portion 24g is formed from the lower surface of the flange portion 24f to the outer periphery of the neck portion 24d. The groove portion 24g is used as a flow path for filling the stock solution C between the outer bottle 23 and the inner bottle 24 and discharging the stock solution from this space. The inner bottle 24 having the above configuration is flexible or crushable.

The inner bottle 24 can be blow-molded together with the outer bottle 23, or the inner surface of the pre-formed outer bottle 23 can be blow-molded into the same shape as the inner surface of the outer bottle 23. The inner bottle 24 is in close contact with the inner surface of the outer bottle 23 in a natural state, and when the undiluted solution is injected, the inner bottle 24 separates from the outer bottle 23 as shown in FIG. Then, as the undiluted solution C is discharged from the valve, the pressure of the pressurizing agent P spreads until it comes into close contact with the inner surface of the outer bottle 23.

The undiluted solution C is discharged from the discharge member 21 to the outside through the groove portion 29b of the valve housing 29 and the outer stem 26a between the groove portion 24g of the inner bottle 24, the inner peripheral surface of the screw cap 15 and the flange portions 24f and 29a. .. The inner bottle 24 gradually swells as the remaining amount of the undiluted solution C decreases, and finally comes into contact with the inner surface of the outer bottle 23.

In the discharge container 10B, in order to prevent leakage of the pressurizing agent P filled in the inner bottle 24, the top surface of the inner bottle 24 (the upper surface of the mouth portion 24e of the inner bottle 24) and the flange portion 29a of the valve housing 29. A flat plate-shaped ring-shaped sealing material 32 is interposed between the lower surface and the lower surface. The sealing material 32 is compressed in the vertical direction between the top surface of the inner bottle 24 and the flange portion 29a by screwing the screw cap 15 into the male screw 11f of the outer bottle 23, and the inner bottle 24 and the valve mechanism. It is sealed between 14 (valve housing 29). On the other hand, the space between the outer bottle 23 and the screw cap 15 is only sealed by the O-ring 13, and the upper side of the O-ring 13, that is, the range of the screw portion where the male screw 11f and the female screw 15e are screwed together. Is not sealed and communicates with the space between the outer bottle 23 and the inner bottle 24 filled with the undiluted solution C. Therefore, the undiluted solution may enter the area of the threaded portion, and the undiluted solution may remain in the area of the threaded portion even after the contents have been discharged.

In this valve assembly 25, the valve mechanism 14 corresponds to a double bottle. Specifically, in order to separately fill the pressurizing agent P and the undiluted solution C, an outer stem 26a in which the stem 26 communicates with the inside of the outer bottle 23 and a double stem having an inner stem 26b communicating with the inside of the inner bottle 24. In addition, two stem rubbers 27 and 28 are provided corresponding to the stems 26a and 26b. The discharge member 21A closes the upper end opening of the outer stem 26a in order to prevent the pressurizing agent P from being discharged while discharging the undiluted solution C.

The valve housing 29 includes a flange portion 29a and is engaged with the top surface of the mouth portion 24e of the inner bottle 24. A groove 29b is formed on the upper surface of the flange 29a. The groove portion 29b is used as a filling passage for filling the undiluted solution C between the outer bottle 23 and the inner bottle 24, and a discharge passage for discharging the undiluted solution C.

In the discharge container 10B having the above configuration, the valve assembly 25 is attached to the outer bottle 23 by screwing the female screw 15e of the screw cap 15 to the male screw 11f of the outer bottle 23. A shielding wall 15d is provided at the lower end of the screw cap 15. Therefore, similarly to the above, when the screw cap 15 is rotated and removed from the container body (outer bottle) 22, the stock solution C is suppressed from being scattered around.

The discharge container 10B can also be filled with the undiluted solution C in the inner bottle 24 and the pressurizing agent P in the space between the outer bottle 23 and the inner bottle 24. In this case, the undiluted solution C does not enter the screw portion under normal use conditions, but when the screw cap 15 is loosened, the compression of the sealing material 32 is weakened before the seal of the O-ring 13 is released, and the inner bottle is used. The undiluted solution C in the inner bottle 24 may enter the threaded portion due to the communication between the 24 and the valve housing 29, but the shielding wall 15d prevents the undiluted solution C from scattering.

The discharge container 40 shown in FIG. 5 is provided with a pressure adjusting mechanism 41 that automatically increases the internal pressure to maintain a constant pressure when the pressure inside the container body 11 decreases. The pressure adjusting mechanism 41 is composed of a cylinder (holder) 42 provided below the valve assembly 12, a piston 43 housed inside the cylinder 42, and a gas container 44 arranged upside down on the piston 43. Become. The gas container 44 is filled with a compressed gas or a liquefied gas which is a pressurizing agent P. The side wall of the cylinder 42 is provided with a communication hole 42a that communicates with the inside of the container body 11. The lower part of the cylinder 42 is a pressure adjusting chamber S1 that is airtightly closed by the piston 43. A flange 42b that closes the mouth of the container body 11 is provided on the outer periphery of the upper end of the cylinder 42. A through hole 42c that penetrates vertically is formed in the flange 42b, and the upper end of the dip tube 20 is attached to the through hole 42c.

The valve assembly 12 includes a valve mechanism 14 and a screw cap 15 for detachably attaching the valve mechanism 14 to the container body 11. The valve mechanism 14 has a valve housing 16, a stem 26, a stem rubber 27, and an elastic body 18. A communication hole 16a that communicates with the inside of the container body 11 is formed on the side surface of the valve housing 16, and an annular locking flange 16b that is attached to the flange 42b of the cylinder 42 via the sealing material 42d is provided. There is. Grooves 42e and 16c, which serve as passages for discharging the undiluted solution C, are formed on the upper surface of the flange 42b and the upper surface of the locking flange 16b, respectively.

In the discharge container 40, the male screw 11f and the O-ring holding portion 11g provided on the neck portion 11d, the female screw 15e provided on the screw cap 15, and the shielding wall 15d are substantially the same as in the case of the discharge container 10 of FIG. be.

In the discharge container 40, the flange 42b of the cylinder 42 (holder) accommodating the gas container 44 is placed on the mouth portion 11e of the container body 11, and the valve assembly 12 is attached to the container body 11, so that the piston 43 is lowered. While moving to compress the pressure adjusting chamber S1, the push button 44a attached to the valve of the gas container 44 is pressed by the piston 43 to inject gas, and the pressure agent P is filled in the container body 11. .. When the pressure in the container body 11 rises and the force pushing down the piston 43 becomes stronger than the pressure adjusting force S1 pushing up the piston 43, the piston goes down, the valve of the gas container 44 is closed, and the gas is injected. Stop. By attaching the valve assembly 12 to the container body 11, the undiluted solution reaches the inside of the housing 16 of the valve mechanism 14 from the inside of the container body 11 via the dip tube 20, the through hole 42c, the groove 42e, the groove 16c, and the communication hole 16a. A passage is formed. No sealing material is provided between the undiluted solution passage and the threaded portion, and the undiluted solution passage communicates with the threaded portion.

Since the discharge container 40 has a pressure adjusting mechanism 41, for example, when the undiluted solution C is injected to reduce its capacity and the internal pressure decreases, the gas as the pressurizing agent P is released from the gas container 44 of the pressure adjusting mechanism 41. And the internal pressure is restored. When the remaining amount of gas in the gas container 44 becomes low, the internal pressure decreases and the injection of the undiluted solution C becomes insufficient. In that case, the screw cap 15 can be removed and the gas container 44 can be replaced. As a result, the remaining undiluted solution C can be discharged to the end. Further, when the undiluted solution C runs out, the screw cap 15 can be removed and the undiluted solution C can be filled. Since these actions are known in FIG. 12 of Patent Document 2, detailed description thereof will be omitted.

When the screw cap 15 is removed due to the replacement of the gas container 44 or the exhaustion of the undiluted solution C as described above, the screw cap 15 is removed with the internal pressure remaining. The undiluted solution C remaining in the above is ejected together with the pressurizing agent P. However, as in the case of FIG. 1b, the shielding wall 15d restricts the flow of the undiluted solution C and the pressurizing agent P downward, and the flow velocity becomes gentler, so that the undiluted solution C and the pressurizing agent P are suppressed from scattering to the surroundings. Will be done.

In the discharge container 50 shown in FIG. 6A, the container body 22 is a double bottle of the outer container 23 and the inner container 24, similarly to the discharge container 10B of FIG. The bottom portion 11a of the outer container 23 is hemispherical, and a cylindrical bottom cap 52 for stably mounting the container body 11 is fitted to the bottom portion 11a. Unlike the discharge container described above, the discharge container 50 does not have a shielding wall on the screw cap 15, and a part of the bottom cap 52 is used as a shielding wall. The bottom cap 52 connects the inner cylinder portion 53 that can be attached to the outer surface of the screw cap 15 in an inverted state, the outer cylinder portion 54 provided with a space around the inner cylinder portion 53, and the lower ends thereof. It is provided with an annular bottom plate 55.

The upper end of the outer cylinder portion 54 is raised higher than the upper end of the inner cylinder portion 53, and when the outer cylinder portion 54 is inverted and attached to the screw cap 15, the raised portion becomes the shielding wall 56. An inner flange 57 extending inward is provided at the lower end of the inner cylinder portion 52. The inner flange 57 is a portion that comes into contact with the top surface of the screw cap 15 when the bottom cap 52 is inverted and attached to the screw cap 15 as shown in FIG. 6B.

In this embodiment, an engaging groove 58 extending in the vertical direction is further provided on the outer peripheral surface of the screw cap 15, and the inner peripheral surface of the inner cylinder portion 53 of the bottom cap 52 is engaged with the engaging groove 58. The protrusion 59 is formed. When the bottom cap 52 is attached to the screw cap 15, if the engaging protrusion 59 is engaged with the engaging groove 58, the bottom cap 52 can be turned to transmit the rotational force to the screw cap 15. Since the bottom cap 52 having a large outer diameter can be turned to turn the screw cap 15, the screw cap 15 can be easily removed from the container body 61. Then, when the screw cap 15 is removed, the shielding wall 56 prevents the undiluted solution from splashing.

Although the typical embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications can be made within the scope of the present invention. For example, in the above embodiment, the screw cap and the container body are all made of synthetic resin, but they may be made of metal such as aluminum or tin. Further, although the stock solution is one type in each embodiment, two types of stock solutions may be discharged together. Further, although the discharge container 50 in FIGS. 6A and 6B is a double container, it may be a single container similar to that in FIG. 1A. Further, in the discharge container 50, an engaging groove may be formed on the inner peripheral surface of the inner cylinder portion 53, and an engaging protrusion may be provided on the outer peripheral surface of the outer cylinder portion 54 of the screw cap 15.

10, 10A, 10B Discharge container 11, 22 Container body 11a Bottom 11b Body 11c Shoulder 11d Neck 11e Mouth 11f Male screw 11g O-ring holding part 11h Bottom 11i Side wall 11j Flange 12 Valve assembly 13 O-ring 14 Valve mechanism 15 screw Cap 15a Cylindrical part 15b Valve holding part 15c Ring part 15d Shielding wall 15e Female screw 15f Sealing surface 15g Engagement protrusion 16, 29 Valve housing 16a Communication hole 16b Locking flange 16c Groove 17 Stem 17a Stem hole 18 Elastic body 19 Stem rubber 20 Dip tube 21, 21A Discharge member (push button)
21a Mounting part 21b Spray mechanism 21c Continuous passage C Undiluted solution P Pressurizing agent D1 Flange diameter D2 Inner diameter of shielding wall S Circular space G Gap L1 Length of shielding wall protruding from the lower surface of the flange L2 From the lower end of the cylinder to the O-ring Length 23 Outer bottle 24 Inner bottle 24a Bottom 24b Body 24c Shoulder 24d Neck 24e Mouth 24f Flange 24g Groove 25 Valve assembly 26 Stem 26a Outer stem 26b Inner stem 27, 28 Stem rubber 29 Valve housing 29a Flange 29b Groove 29c Cylinder 32 Sealing material 40 Discharge container 41 Pressure adjustment mechanism 42 Cylinder 42a Communication hole 42b Flange 42c Through hole 42d Sealing material 42e Groove 43 Piston 44 Gas container 44a Push button S1 Pressure adjustment chamber 50 Discharge container 52 Bottom cap 52b Groove 53 Inner cylinder 54 Outer cylinder 55 Bottom plate 56 Shielding wall 57 Inner flange 58 Engagement groove 59 Engagement protrusion

Claims (7)

A discharge container provided with a container body for filling the undiluted solution and the pressurizing agent and a valve assembly attached to the container body.
A male screw and an O-ring holding portion for holding the O-ring below the male screw are formed on the outer periphery of the neck of the container body.
The valve assembly includes a valve mechanism and a screw cap that attaches the valve mechanism to the container body.
The screw cap includes a female screw screwed with a male screw of a container body, and a tubular portion having a sealing surface for horizontally pressing the O-ring held by the O-ring holding portion. Ori,
Around the neck portion, a cylindrical shielding wall for partitioning an annular space is provided below the tubular portion.
The shielding wall has an inner diameter larger than the outer diameter of the O-ring and extends downward from the lower end of the tubular portion of the screw cap via a step .
Discharge container. The container body is a double bottle composed of an outer bottle and an inner bottle, and the space between the outer bottle and the inner bottle and the screw portion in which the male screw and the female screw are screwed communicate with each other. The discharge container according to claim 1. A holder for accommodating a gas container for adjusting the internal pressure is provided inside the container body, and by attaching the valve assembly to the container body, a stock solution passage for supplying the stock solution in the container body to the valve mechanism is formed. The discharge container according to claim 1 or 2. A discharge container provided with a container body for filling the undiluted solution and the pressurizing agent and a valve assembly attached to the container body.
A male screw and an O-ring holding portion for holding the O-ring below the male screw are formed on the outer periphery of the neck of the container body.
The valve assembly includes a valve mechanism and a screw cap that attaches the valve mechanism to the container body.
The screw cap includes a female screw screwed with a male screw of a container body, and a tubular portion having a sealing surface for horizontally pressing the O-ring held by the O-ring holding portion. Ori,
Around the neck portion, a cylindrical shielding wall for partitioning an annular space is provided below the tubular portion.
A bottom cap that can be attached to the screw cap is detachably provided on the bottom of the container body.
The bottom cap has an outer cylinder portion having an outer diameter larger than the outer diameter of the screw cap, and an inner cylinder portion that fits together with the screw cap so as to be rotatable.
A discharge container in which the lower part of the outer cylinder portion serves as the shielding wall when the bottom cap is fitted to the screw cap in the inverted state. A flange that extends outward is provided below the O-ring holding portion on the outer circumference of the neck.
The discharge container according to any one of claims 1 to 4 , wherein a gap is provided between the outer peripheral surface of the flange and the inner peripheral surface of the shielding wall. The discharge container according to claim 5 , wherein the length between the lower end of the shielding wall and the lower end of the flange is longer than the length between the lower end of the O-ring and the lower end of the tubular portion. A discharge container provided with a container body for filling the undiluted solution and the pressurizing agent and a valve assembly attached to the container body.
A male screw and an O-ring holding portion for holding the O-ring below the male screw are formed on the outer periphery of the neck of the container body.
The valve assembly includes a valve mechanism and a screw cap that attaches the valve mechanism to the container body.
The screw cap includes a female screw screwed with a male screw of a container body, and a tubular portion having a sealing surface for horizontally pressing the O-ring held by the O-ring holding portion. Ori,
Around the neck portion, a cylindrical shielding wall for partitioning an annular space is provided below the tubular portion.
A flange that extends outward is provided below the O-ring holding portion on the outer circumference of the neck.
A gap is provided between the outer peripheral surface of the flange and the inner peripheral surface of the shielding wall.
A discharge container in which the length between the lower end of the shielding wall and the lower end of the flange is longer than the length between the O-ring and the lower end of the tubular portion.

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