JP7713804B2 - Discharge container - Google Patents

Description

The present invention relates to a dispensing container.

As shown in Patent Document 1 below, for example, a known discharge container includes a container body, a cylinder, a piston slidably disposed within the cylinder, a piston operating portion for operating the piston, a suction portion connected to a liquid chamber within the cylinder, a suction valve disposed inside the suction portion and opening in conjunction with the retraction of the piston, an attachment tube disposed at the mouth of the container body, a nozzle directly connected to the cylinder so as to protrude laterally from the cylinder and communicating with the liquid chamber, and a discharge valve disposed inside the nozzle and opening in conjunction with the pushing of the piston.

With the above-mentioned discharge container, by operating the piston operating part and pushing the piston part, the contents stored in the liquid chamber in the cylinder part can be discharged to the outside through the discharge valve and nozzle part. Then, by retracting the piston part, the contents can be sucked into the liquid chamber through the suction valve and suction part and stored there, ready for the next discharge.

JP 2013-96260 A

However, with the conventional dispensing containers described above, if the piston operating part is accidentally touched and the piston part is pushed in, there is a possibility that the contents may be accidentally dispensed. This could result in the unintended dispensing of the contents.

The present invention was made in light of these circumstances, and its purpose is to provide a dispensing container that can prevent the unintended dispensing of contents.

(1) A dispensing container according to the present invention comprises a container body having an inner container that reduces in volume as the content contained therein decreases, and an outer container in which the inner container is fitted; a cylinder section disposed above the mouth of the container body with the central axis of the container body and the cylinder axis coaxially arranged, the interior of which serves as an air chamber ; a mounting tube section disposed between the mouth of the container body and the cylinder section; a piston section disposed within the cylinder section coaxially with the cylinder axis and slidable up and down; a piston operating section for operating the piston section; an air valve provided in an air communication passage communicating an air introduction section that introduces air between the inner container and the outer container with the air chamber, the air valve allowing air to flow from the air chamber toward the air introduction section and restricting air flow in the opposite direction; a discharge member having a discharge port for discharging the contents and a discharge path connecting the inside of the discharge port and the inside of the inner container; a plug that releasably closes the discharge path and restricts the flow of the contents from the inner container toward the discharge port; and an operating member that switches the plug from a closed state in which the discharge path is closed to an open state, wherein the piston operating unit comprises: an inner lid fixed to the upper end of the cylinder part while being arranged coaxially with the cylinder axis; and a push-down head combined with the piston part that is arranged coaxially with the cylinder axis and can be pressed down against the cylinder part and the inner lid, and wherein the discharge member is formed integrally with the lower end of the cylinder part and the mounting tube part, and protrudes toward the side of the cylinder part.

With the discharge container of the present invention, the air chamber can be pressurized by operating the piston operating unit to push the piston, and the air in the air chamber can be introduced into the air communication passage. This allows the air in the air chamber to be introduced between the inner container and the outer container via the air valve and air inlet, increasing the pressure between the inner container and the outer container. This allows the inner container to be pressurized. At this time, the discharge passage is blocked by the plug, so communication between the inner container and the outside is blocked through the discharge passage and the discharge outlet. This means that the inner container can be maintained in a pressurized state without the inner container being deformed by a pressure increase between the inner container and the outer container. Furthermore, because the discharge passage is blocked by the plug, the contents in the inner container cannot reach the discharge outlet. Therefore, the contents cannot be discharged through the discharge outlet simply by operating the piston operating unit.

When discharging the contents from this state, the operating member is used to switch the stopper from a closed state, in which the discharge path is blocked, to an open state. This allows communication between the inside of the inner container and the outside through the discharge path and discharge outlet, allowing the contents inside the inner container to be discharged to the outside through the discharge path and discharge outlet. At this time, the inner container can be caused to undergo volume reduction (deflation) as the contents are discharged. Furthermore, because the inner container is maintained in a pressurized state by the increase in pressure between the inner container and the outer container, volume reduction and deformation of the inner container can be promoted as the contents are discharged. This allows the contents to be discharged efficiently.

Furthermore, as the contents are discharged, the inner container undergoes volumetric deformation, allowing the pressurized state of the inner container to be released. Furthermore, as the pushed-in piston is pulled back, negative pressure is created within the air chamber, but the air valve can be used to prevent air from flowing back from the air inlet into the air chamber. This prevents air that has been introduced between the inner container and outer container from being expelled. Therefore, as the piston operating section is repeatedly operated, more air can be introduced between the inner container and outer container, allowing the pressure between the inner container and outer container to increase again. As a result, the contents can be steadily discharged while the inner container gradually undergoes volumetric deformation.

In particular, the device is designed to dispense the contents by performing two separate operations: pushing the piston with the piston operating unit, and then switching the stopper to the open state with the operating member. Therefore, even if the piston operating unit is operated by mistake, the contents can be prevented from being dispensed. Furthermore, even if the operating member is operated by mistake after the contents have been dispensed but before the piston operating unit is operated, the contents can be prevented from being dispensed because the inner container is not pressurized by air from the air chamber. As a result, unintended dispensing of the contents can be prevented.

(2) The discharge member may comprise a discharge tube whose inside is the discharge path and in which the discharge outlet is formed, a valve seat provided within the discharge tube with a communication hole that connects the inside of the discharge outlet with the inside of the inner container, the stopper body being arranged within the discharge tube so as to be movable between a closed position in which it contacts the valve seat and closes the communication hole, and an open position in which it moves away from the valve seat and opens the communication hole, and the operating member being arranged outside the discharge tube and movable relative to the discharge tube, and comprising an operating lever that moves the stopper body between the closed position and the open position.

In this case, the stopper can be moved from the closed position to the open position with a simple operation (one-touch operation) of simply operating the operating lever with a fingertip, etc., making it easy to dispense the contents. In particular, because the operating lever is provided on the discharge tube where the discharge outlet is formed, the operating lever can be operated near the discharge outlet, making it easy to dispense the contents. This makes it easy to use in a variety of ways, such as operating the operating lever while holding a cup or the like near the discharge outlet and pouring the contents into the cup, thereby improving convenience.

(3) The container body may be a biaxially stretched blow molded container.

In this case, the container body can be formed by combining the inner and outer preforms in a double layer (inner and outer) and then biaxially stretching and blow molding. This allows the container body to be, for example, a delaminating container (delamination bottle) in which the inner container is peelably laminated to the inner surface of the outer container.

The present invention allows for a dispensing container that can prevent unintended dispensing of contents.

1 is a vertical cross-sectional view showing an embodiment of a discharge container according to the present invention. 2 is an enlarged cross-sectional view of a component arranged above the mouth of the container body in the discharge container shown in FIG. 1 . FIG. 2 is a vertical cross-sectional view showing a state in which the press-down head is pressed down from the state shown in FIG. 1 and then the operating lever is tilted to eject the contents. FIG. 4 is a vertical cross-sectional view showing a state in which the press-down head is pressed down again after the state shown in FIG. 3 .

Hereinafter, an embodiment of a discharge container according to the present invention will be described with reference to the drawings.
As shown in Figure 1, the dispensing container 1 of this embodiment comprises a container body 2 having a highly flexible inner container 3 that is filled with contents W and undergoes volume reduction (shrinkage) as the contents W decreases, and an outer container 4 in which the inner container 3 is housed; a cylinder portion 5 formed in a cylindrical shape with a bottom; a piston portion 6 that is slidably arranged within the cylinder portion 5; a piston operating portion 7 that operates the piston portion 6; a discharge member 9 that has a discharge port 8 for discharging the contents W and protrudes toward the side of the cylinder portion 5; an attachment tube portion 10 that is arranged between the mouth portion 20 of the container body 2 and the cylinder portion 5; and an attachment cap 11 that is attached to the mouth portion 20 of the container body 2 and fixes the attachment tube portion 10 to the mouth portion 20 of the container body 2.

In this embodiment, the central axis of the cylinder portion 5 is arranged coaxially with the central axes (container axes) of the inner container 3 and the outer container 4. The cylinder portion 5, piston portion 6, mounting tube portion 10, and mounting cap 11 are arranged coaxially with the central axis of the cylinder portion 5. In this embodiment, the central axis of the cylinder portion 5 is referred to as the cylinder axis O1, and the side of the piston operating portion 7 along the cylinder axis O1 is referred to as the upper side, and the side of the container body 2 along the cylinder axis O1 is referred to as the lower side.
Furthermore, in a plan view seen from the cylinder axis O1 direction, the direction intersecting the cylinder axis O1 is referred to as the radial direction, and the direction going around the cylinder axis O1 is referred to as the circumferential direction. Furthermore, within the radial direction, the direction in which the discharge member 9 protrudes from the cylinder portion 5 is referred to as the forward direction, and the opposite direction is referred to as the rearward direction.

The contents W contained in the inner container 3 are not particularly limited, but liquid contents (content liquids) such as liquid food, liquid cosmetics, etc. can be suitably used. In particular, carbonated drinks that sparkle (including alcoholic drinks such as beer) or content liquids that generate gas can be suitably used as the contents W.
In each drawing, the contents W are shown by dotted hatching.

(Container body)
The container body 2 is a biaxially stretched blow molded container.
Specifically, the container body 2 is a laminated peelable container (delamination bottle) in which the inner container 3 is peelably laminated on the inner surface of the outer container 4, and is formed by forming an outer preform for the outer container 4 and an inner preform for the inner container 3 by injection molding or the like, combining these in a double layer (inside and outside), and then biaxially stretching blow molding.
Alternatively, the outer preform may be first biaxially stretched blow molded to form the outer container 4, the inner preform may be placed inside, and then the inner preform may be biaxially stretched blow molded to form the container body 2.

The inner container 3 and the outer container 4 are made of synthetic resin material, and may be made of the same material or different materials. In this embodiment, the inner container 3 and the outer container 4 are made of PET (polyethylene terephthalate).
However, the synthetic resin material is not limited to PET, and other synthetic resin materials may be used, such as PP (polypropylene), PE (polyethylene), nylon (polyamide), and EVOH (ethylene-vinyl alcohol copolymer).Furthermore, the inner container 3 and the outer container 4 are not limited to being made of one type of synthetic resin material, and may be formed by laminating different types of synthetic resin materials.

The container body 2 is formed in a bottomed cylindrical shape (for example, bottle-shaped) in which a mouth 20, a shoulder 21, a body (not shown), and a bottom (not shown) are connected in this order from the top.
2, the mouth 20 of the container body 2 is formed to extend upward from the upper opening of the shoulder portion 21. The mouth 20 of the container body 2 is composed of the mouth 3a of the inner container 3 and the mouth 4a of the outer container 4. The mouth 4a of the outer container 4 is formed with an air hole (air inlet portion according to the present invention) 22 that introduces air guided via an air communication passage 12, which will be described later, between the outer container 4 and the inner container 3.

In the illustrated example, multiple air holes 22 are formed at intervals around the circumferential direction of the mouth 4a of the outer container 4. However, multiple air holes 22 do not have to be formed; only one air hole 22 may be formed around the mouth 4a of the outer container 4.

A flange 3b is provided at the upper end of the mouth 3a of the inner container 3, sealing the upper open end of the mouth 4a of the outer container 4 from above. Therefore, the inner container 3 is stacked on top of the upper end of the mouth 4a of the outer container 4, with the flange 3b used to seal the mouth 4a of the outer container 4.

A first threaded portion (e.g., a female threaded portion 23) is formed on the outer peripheral surface of the mouth portion 4a of the outer container 4, and an annular sealing projection 24 that projects radially outward is formed in a portion located below the air hole 22. The sealing projection 24 projects radially outward beyond the first threaded portion 23.
The first screw portion 23 is not formed in a spiral shape around the entire circumference of the mouth portion 4a of the outer container 4, but is divided in the circumferential direction so as not to overlap at least radially with the air hole 22. As a result, the circumferentially divided portion of the first screw portion 23 serves as an air groove that runs vertically through the first screw portion 23 and communicates with the air hole 22.

(Cylinder section)
The cylinder 5 is disposed coaxially with the cylinder axis O1 above the mouth 20 of the container body 2 and is formed in a cylindrical shape with a bottom that opens upward. An air chamber 30 is formed within the cylinder 5 to introduce air between the inner container 3 and the outer container 4 through an air hole 22 formed in the mouth 4a of the outer container 4.
An air cylinder 32 that protrudes downward from the cylinder bottom wall 31 is integrally formed in a portion of the cylinder portion 5 that is located rearward of the cylinder axis O1. The air cylinder 32 is formed in a cylindrical shape with a bottom that opens upward. Therefore, the inside of the air cylinder 32 is always in communication with the air chamber 30.

(Mounting tube)
The mounting tubular portion 10 is a member arranged on the upper opening edge of the mouth portion 20 of the container body 2, and comprises a main body tubular portion 40 extending downward from the cylinder bottom wall 31, and a sealing body 50 fixed to the lower end of the main body tubular portion 40.
In this embodiment, the main body tubular portion 40 and the seal body 50 are formed separately, but this is not limited to this case, and the mounting tubular portion 10 may also be formed by forming the main body tubular portion 40 and the seal body 50 as a single unit.

The cylindrical main body portion 40 is disposed coaxially with the cylinder axis O1, and its upper end is integrally formed with the cylinder bottom wall 31. A portion of the cylindrical main body portion 40 also serves as a portion of the air cylinder 32 described above. An annular flange portion 41 that protrudes radially outward is formed at the lower end of the cylindrical main body portion 40. The flange portion 41 is disposed on the upper opening edge of the mouth portion 20 of the container body 2 via a seal ring 51, which will be described later.
A plurality of reinforcing ribs 42 extending in the vertical direction are formed at intervals in the circumferential direction on the outer peripheral surface of the main body tubular portion 40. The reinforcing ribs 42 are formed integrally with the cylinder bottom wall 31 and the flange portion 41.

The seal body 50 comprises a seal ring 51 positioned on the upper opening edge of the mouth 20 of the container body 2 (specifically, on the flange 3b of the inner container 3), an outer seal tube 52 that protrudes upward from the seal ring 51 and is fitted from below into the inside of the tubular body portion 40, and an inner seal tube 53 that protrudes upward from the inner peripheral edge of the seal ring 51.

The seal ring 51 is pressed from above against the upper opening edge of the mouth 20 of the container body 2 by the flange 41 of the main body tubular portion 40. As a result, the seal ring 51 is in close contact with the upper opening edge of the mouth 20 of the container body 2, sealing the mouth 20 of the container body 2.
The outer seal tube 52 and the inner seal tube 53 are arranged with a gap in the radial direction, and the height positions of their upper edges are the same. In this case, the outer seal tube 52 and the inner seal tube 53 are formed so as to be positioned below the bottom of the air tube 32 with a certain gap from the bottom of the air tube 32.

(Attachment cap)
The mounting cap 11 is formed in a cylindrical shape that surrounds the flange portion 41 of the main body cylindrical portion 40 and the mouth portion 20 of the container main body 2 from the outside in the radial direction, and is arranged coaxially with the cylinder axis O1.
The attachment cap 11 is formed so that its upper end is located slightly above the flange 41 of the tubular main body 40 and its lower end is located slightly below the sealing projection 24 formed on the mouth 20 of the container body 2. An annular connecting ring 60 that protrudes radially inward is formed on the upper end of the attachment cap 11. The connecting ring 60 contacts the flange 41 of the tubular main body 40 from above. As a result, the attachment cap 11 is assembled to the tubular main body 40 so as to be rotatable relative to the tubular main body 40 about the cylinder axis O1 while being prevented from coming off downward.

A second threaded portion (e.g., a male threaded portion) 61 is formed on the inner peripheral surface of the attachment cap 11, which screws into the first threaded portion 23 formed on the mouth 4a of the outer container 4. As a result, by threading the attachment cap 11 onto the mouth 20 of the container body 2, the entire attachment tubular portion 10 can be pressed against the upper opening edge of the mouth 20 of the container body 2 using the connecting ring 60, thereby fixing the mouth 20 of the container body 2 and the attachment tubular portion 10 together.

When the attachment cap 11 is attached to the mouth 20 of the container body 2, it is fitted with an undercut against the sealing protrusion 24. This prevents the attachment cap 11 from rotating in the loosening direction. Furthermore, the attachment cap 11 is attached in tight contact with the sealing protrusion 24. This creates a seal between the attachment cap 11 and the sealing protrusion 24, preventing air from flowing between them.

(Piston part)
The piston 6 is disposed in the cylinder 5 so as to be able to slide up and down, and defines an air chamber 30 between itself and a cylinder bottom wall 31. That is, the space within the cylinder 5 located below the piston 6 serves as the air chamber 30.
The piston portion 6 includes an annular piston bottom wall 70 arranged coaxially with the cylinder axis O1, a piston peripheral wall 71 extending upward from the outer peripheral edge of the piston bottom wall 70, a sliding cylinder 72 surrounding the piston peripheral wall 71 from the outside in the radial direction and slidably fitted against the inner peripheral surface of the cylinder portion 5, and a protruding cylinder 73 protruding upward from the inner peripheral edge of the piston bottom wall 70.

The piston bottom wall 70 is disposed above and facing the cylinder bottom wall 31 with a gap therebetween. A connecting flange 112 (described later) is assembled from above to the piston bottom wall 70. The piston peripheral wall 71 is formed in a cylindrical shape that surrounds the connecting flange 112 from the outside in the radial direction, and is disposed coaxially with the cylinder axis O1.
The sliding cylinder 72 is tapered, gradually increasing in diameter from the vertical center toward the top and bottom, and has lips located at both vertical ends. The lips are in close sliding contact with the inner circumferential surface of the cylinder 5. This ensures a predetermined seal between the lips and the inner circumferential surface of the cylinder 5.

A partition wall is formed on the protruding cylinder 73 to separate the inside of the protruding cylinder 73 into upper and lower sections. A shaft body 74 extending downward is formed on the partition wall coaxially with the cylinder axis O1, and a first air introduction hole 75 is formed to pass through the partition wall from top to bottom.
In this embodiment, the shaft body 74 is formed in a cylindrical shape that opens downward, and a plurality of first air introduction holes 75 are formed at intervals in the circumferential direction.

An air intake valve 76 that uses a shaft 74 to introduce air into the air chamber 30 is disposed on the underside of the piston bottom wall 70 .
The air introduction valve 76 includes a cylindrical portion fitted onto the shaft 74, and an elastically deformable valve element 77 that protrudes radially outward from the cylindrical portion in an annular shape and has a free outer end. The outer end of the valve element 77 abuts against the piston bottom wall 70 from below over the entire circumference so as to be releasable. As a result, the air introduction valve 76 releasably closes the first air introduction hole 75 from the air chamber 30 side.
Therefore, the air intake valve 76 functions as a check valve that allows air to flow into the air chamber 30 from the outside through the first air intake hole 75, and also restricts air from flowing out of the air chamber 30 to the outside through the first air intake hole 75.

(Piston operating part)
The piston operating unit 7 includes an inner lid 80 fixed to the upper end of the cylinder unit 5, a push-down head 90 that can be pushed down against the cylinder unit 5 and the inner lid 80, a coil spring 100 that urges the push-down head 90 upward against the inner lid 80, and a connecting member 110 that connects the push-down head 90 to the piston unit 6.

The inner lid 80 comprises an annular top wall 81 positioned on the upper opening edge of the cylinder 5; an outer cylinder 82 extending downward from the outer peripheral edge of the top wall 81 and surrounding the cylinder 5 from the radially outer side; an inner cylinder 83 extending downward from the inner peripheral edge of the top wall 81 and positioned inside the cylinder 5 with a gap between it and the inner cylinder 5; an annular wall 84 protruding radially inward from the lower end of the inner cylinder 83; and a guide cylinder 85 protruding upward from the inner peripheral edge of the annular wall 84, and is arranged coaxially with the cylinder axis O1.

The outer cylinder 82 is fitted, for example, by an undercut, to the upper end of the cylinder portion 5. This prevents the inner cover 80 from coming off upward when it is assembled to the upper end of the cylinder portion 5. The inner cylinder 83 is formed so that its diameter gradually decreases from top to bottom, and its lower end is located above a connecting flange 112, which will be described later.
A stopper 86 is formed on the underside of the annular wall 84. The stopper 86 protrudes downward and contacts a connecting flange 112 (described later) from above. The guide tube 85 is disposed inside the inner tube 83 and guides the movement of the press-down head 90 in the up-and-down direction.

The push-down head 90 comprises an annular top wall portion 91, an outer head tube 92 that extends downward from the outer peripheral edge of the top wall portion 91 and surrounds the outer tube 82 of the inner lid 80 from the radial outside, an inner head tube 93 that extends downward from the inner peripheral edge of the top wall portion 91 and is positioned inside the guide tube 85 of the inner lid 80, and a retaining tube 94 that protrudes downward from the top wall portion 91 and surrounds the inner head tube 93 from the radial outside, and is arranged coaxially with the cylinder axis O1.

The outer head cylinder 92 is movable in the vertical direction relative to the outer cylinder 82 of the inner lid 80 , and its lower end is positioned at the same height as the lower end of the outer cylinder 82 .
The inner head tube 93 is movable in the vertical direction relative to the guide tube 85 of the inner lid 80, and its lower end is located slightly above the annular wall 84 of the inner lid 80. Furthermore, the inner head tube 93 is combined with the guide tube 85 of the inner lid 80 so as not to be movable in the circumferential direction. Therefore, the press-down head 90 can be pressed down without being able to rotate relative to the inner lid 80 and the cylinder portion 5 around the cylinder axis O1.

The coil spring 100 is disposed between the inner lid 80 and the press-down head 90 in a vertically compressed state, urging the press-down head 90 upward relative to the inner lid 80. Specifically, the coil spring 100 is disposed between the annular wall 84 of the inner lid 80 and the top wall 91 of the press-down head 90, with its lower end fitted inside the inner tube 83 of the inner lid 80 and its upper end fitted inside the retaining tube 94.

The connecting member 110 includes a topped cylindrical connecting tube 111 arranged coaxially with the cylinder axis O1, and an annular connecting flange 112 protruding radially outward from the lower end of the connecting tube 111.
The connecting tube 111 is fitted from below into the inside of the inner head tube 93 of the press-down head 90. This allows the connecting member 110 to move up and down together with the press-down head 90. The upper end surface of the connecting tube 111 is flush with the upper surface of the top wall portion 91 of the press-down head 90.

The lower end of the connecting tube 111 is fitted into the protruding tube 73 of the piston portion 6. The connecting flange 112 is fitted into the inside of the piston peripheral wall 71 while being positioned on the upper surface of the piston bottom wall 70. This allows the connecting member 110 to be integrally combined with the piston portion 6. Therefore, the push-down head 90 and piston portion 6 are integrally combined via the connecting member 110. As a result, the piston portion 6 can move up and down along with the push-down head 90.

The connecting flange 112 contacts the stopper 86 formed on the annular wall 84 of the inner lid 80 from below. This prevents the push-down head 90 and piston 6 from moving upward due to the biasing force (elastic restoring force) of the coil spring 100, thereby determining the highest raised positions of the push-down head 90 and piston 6.

In the piston operating unit 7 configured as described above, the connecting tube 111 of the connecting member 110 is formed with a second air inlet hole 113 that penetrates the connecting tube 111 in the radial direction. This allows the second air inlet hole 113 and the first air inlet hole 75 to communicate with each other. Furthermore, the second air inlet hole 113 communicates with the outside through a gap between the connecting tube 111 and the inner head tube 93, etc. Therefore, air can be introduced into the air chamber 30 from the outside through the second air inlet hole 113 and the first air inlet hole 75.

(Discharge member)
The discharge member 9 has a discharge port 8 for discharging the contents W and a discharge path 120 that connects the inside of the discharge port 8 with the inside of the inner container 3, and is formed so as to protrude toward the front of the cylinder portion 5.
The discharge member 9 comprises a base end tube portion 121 formed integrally with the lower end of the cylinder portion 5 and the main body tube portion 40 in the mounting tube portion 10, and a discharge nozzle (discharge tube according to the present invention) 122 combined with the base end tube portion 121.

The central axis of the discharge nozzle 122 is referred to as the nozzle axis O2, and the direction along the nozzle axis O2 is referred to as the nozzle axis O2 direction. Furthermore, the direction intersecting the nozzle axis O2 as viewed from the nozzle axis O2 direction is referred to as the nozzle radial direction, and the direction circumferential around the nozzle axis O2 is referred to as the nozzle circumferential direction.
In this embodiment, the discharge member 9 is formed to extend diagonally downward and forward of the cylinder portion 5. However, this is not limited to this, and the discharge member 9 may be formed to extend horizontally toward the front of the cylinder portion 5.

The base end tubular portion 121 is formed to extend along the nozzle axis O2 from the connection between the front portion of the main body tubular portion 40 and the lower end of the cylinder portion 5. The rear end of the base end tubular portion 121 extends inside the main body tubular portion 40 and opens to the inside of the main body tubular portion 40.

A connecting tube 125 extending downward is formed integrally with the rear end of the base end tubular portion 121. The connecting tube 125 is positioned coaxially with the cylinder axis O1 and extends downward to a length sufficient to enter the inner container 3 from above. A portion of the upper end of the connecting tube 125 is formed integrally with the bottom of the air tube 32 formed on the cylinder bottom wall 31. This fixes the connecting tube 125 to the base end tubular portion 121 and the air tube 32.

Furthermore, the connecting tube 125 is inserted into the inner seal tube 53 of the seal body 50 and is tightly fitted to the inside of the inner seal tube 53. This ensures a predetermined level of sealing between the connecting tube 125 and the inner seal tube 53.

A pipe 126 is fitted inside the connecting tube 125. The pipe 126 is, for example, a rigid pipe, and is arranged coaxially with the cylinder axis O1. The lower end opening of the pipe 126 is open to the interior of the inner container 3 (see Figure 1). As a result, the inside of the base end tube portion 121 is always in communication with the interior of the inner container 3 through the inside of the pipe 126. Note that the pipe 126 may extend all the way to near the bottom of the inner container 3.

However, the pipe 126 is not essential and does not have to be provided. In this case, the contents W in the inner container 3 can be supplied into the base end tubular portion 121 through the inside of the connecting tube 125. Furthermore, in this case, instead of the pipe 126, a restricting member that is, for example, cross-shaped in cross section and extends vertically may be fitted inside the connecting tube 125. The restricting member is long enough to penetrate into the inner container 2, and prevents the inner container 2 from blocking the lower end opening of the connecting tube 125 when the inner container 2 undergoes volumetric deformation.

The discharge nozzle 122 is attached to the base end tubular portion 121 configured as described above from the front, and is combined with the base end tubular portion 121. In the example shown in the figure, the nozzle tube is fitted to the base end tubular portion 121 through an undercut, and is fitted onto the outside in a state where it is prevented from coming off.
The discharge nozzle 122 comprises a first discharge nozzle 131 extending from the base end tubular portion 121 along the nozzle axis O2, and a second discharge nozzle 132 branching downward from the middle of the first discharge nozzle 131 in a bifurcated shape.

The first discharge nozzle 131 opens forward. However, a closing plate 133 is fitted from the front onto the inside of the front end of the first discharge nozzle 131. As a result, the front end opening of the first discharge nozzle 131 is blocked by the closing plate 133. Furthermore, a cap tube 134 is formed at the tip of the first discharge nozzle 131, protruding upward so as to be perpendicular to the nozzle axis O2.

The second discharge nozzle 132 is formed to branch off and extend from the middle of the first discharge nozzle 131 so as to be inclined further downward than the first discharge nozzle 131. The opening at the tip of the second discharge nozzle 132 serves as the discharge outlet 8 for discharging the contents W.
In the illustrated example, the second discharge nozzle 132 is formed so that the discharge port 8 faces diagonally downward and forward rather than directly downward. However, the second discharge nozzle 132 may be formed so that the discharge port 8 faces directly downward.

The inside of the base end tubular portion 121 and the discharge nozzle 122 configured as described above function as a discharge path 120 that communicates the inside of the discharge port 8 with the inside of the inner container 3 via a pipe 126 .
Furthermore, inside the first discharge nozzle 131, an annular valve seat 136 is formed, in which a communication hole 135 that connects the inside of the discharge port 8 with the inside of the inner container 3 is formed.
The valve seat 136 is disposed in a portion of the first discharge nozzle 131 that is forward of the base end tubular portion 121 and rearward of the branching portion of the second discharge nozzle 132. The valve seat 136 is formed with a tapered cross section that extends forward as it extends from the inner circumferential surface of the first discharge nozzle 131 toward the inside in the nozzle radial direction. The communication hole 135 is disposed in the center of the valve seat 136 coaxially with the nozzle axis O2.

(Air communication passage)
As described above, because the connecting tube 125 is fitted inside the inner sealing tube 53, the space formed between the bottom of the air tube 32 and the inner and outer sealing tubes 53 and 52 functions as a storage space 140 that is restricted from communicating with the interior of the inner container 3 through the space between the connecting tube 125 and the inner sealing tube 53. Furthermore, an air communication hole 141 is formed in the bottom of the air tube 32, penetrating the bottom from top to bottom.
For these reasons, the accommodation space 140 is a space in which communication with the interior of the inner container 3 is restricted and which communicates only with the interior of the air chamber 30 through the air communication hole 141 .

Furthermore, a first air groove 142 that communicates with the interior of the storage space 140 is formed between the inner circumferential surface of the main body tubular portion 40 and the outer seal tube 52. Furthermore, a second air groove 143 that communicates with the first air groove 142 and the inside of the mounting cap 11 is formed between the lower surface of the flange portion 41 of the main body tubular portion 40 and the upper surface of the seal ring 51 of the seal body 50.

In the illustrated example, the first air groove 142 is formed as a vertical groove extending in the up-down direction on the inner circumferential surface of the rear portion of the tubular main body 40. However, this is not limited to this case, and the first air groove 142 may be formed on the outer circumferential surface of the outer seal tube 52, or may be formed on both the outer circumferential surface of the outer seal tube 52 and the inner circumferential surface of the tubular main body 40.
The second air groove 143 is formed as a horizontal groove extending radially on the lower surface of a rear portion of the flange portion 41. However, this is not limited to this case, and the second air groove 143 may be formed on the upper surface of the seal ring 51, or may be formed on both the upper surface of the seal ring 51 and the lower surface of the flange portion 41.

As configured as described above, air within the air chamber 30 can be introduced between the inner container 3 and the outer container 4 through the air communication hole 141, the first air groove 142, the second air groove 143, and the air hole 22 formed in the mouth 4a of the outer container 4. Therefore, the air communication hole 141, the first air groove 142, and the second air groove 143 function as an air communication passage 12 that connects the inside of the air chamber 30 with the inside of the air hole 22.

Furthermore, an air valve is provided in the air communication passage 12 to allow air to flow from the air chamber 30 toward the air hole 22 and to restrict air flow from the air hole 22 side toward the air chamber 30.
Specifically, a ball valve 144 is housed in the housing space 140 as an air valve.

The ball valve 144 is a sphere made of, for example, metal or synthetic resin, and is housed in the housing space 140 so as to be able to move up and down. The ball valve 144 is placed on the upper edges of the inner seal cylinder 53 and the outer seal cylinder 52 under normal conditions and when the internal pressure of the air chamber 30 rises (see FIG. 4 ). This allows the air communication hole 141 to be opened, allowing air to flow from inside the air chamber 30 toward the air hole 22.
In contrast, when the internal pressure of the air chamber 30 drops, the ball valve 144 moves upward and closes the air communication hole 141 from below (see FIG. 3 ). This makes it possible to restrict the flow of air from the air hole 22 side toward the inside of the air chamber 30, and allows the ball valve 144 to function as a check valve.

(Plug, operating member)
Furthermore, the discharge member 9 is provided with a stopper body 13 that releasably blocks the discharge path 120 and regulates the flow of the contents W from the inner container 3 toward the discharge outlet 8, and is also provided with an operating member 14 that switches the stopper body 13 from a closed state in which the discharge path 120 is blocked to an open state.

The plug 13 is positioned inside the first discharge nozzle 131 and is movable along the nozzle axis O2 between a closing position P1 in which it contacts the valve seat 136 and closes the communication hole 135, and an opening position P2 (see Figure 3) in which it moves away from the valve seat 136 and opens the communication hole 135.

The plug 13 includes a ball 150 disposed closer to the base end tubular portion 121 than the valve seat 136, and a rod portion 151 extending forward from the ball 150 along the nozzle axis O2.
The ball 150 is formed in a spherical shape larger than the diameter of the communication hole 135, and is in close contact with the valve seat 136 from the rear so as to be able to separate from the valve seat 136. Therefore, the ball 150 can be in contact with the valve seat 136 over the entire circumference of the nozzle, making it possible to close the communication hole 135. The rod portion 151 is inserted inside the communication hole 135 and is arranged coaxially with the nozzle axis O2, and is formed to extend forward beyond the branched portion of the second discharge nozzle 132.

The plug 13 configured in this manner is arranged in the first discharge nozzle 131 so as to be movable between a closed position P1 and an open position P2 along the nozzle axis O2 by operating the operating member 14.
The closing position P1 is a position where the ball 150 comes into contact with the valve seat 136 from the rear, thereby closing the communication hole 135. The opening position P2 is a position where the ball 150 moves rearward along the nozzle axis O2, thereby moving away from the valve seat 136, thereby opening the communication hole 135.

The operating member 14 includes a guide member 160 disposed within the first discharge nozzle 131 and connected to the rod portion 151, and an operating lever 170 disposed above the first discharge nozzle 131 and used to move the plug 13 between the closed position P1 and the open position P2 via the guide member 160.

The guide member 160 is arranged coaxially with the nozzle axis O2 in a portion of the first discharge nozzle 131 located between the branching portion of the second discharge nozzle 132 and the closing plate 133, and is arranged movably relative to the first discharge nozzle 131.
The guide member 160 comprises a guide body 161 formed in the shape of a closed cylinder that opens to the rear and is closed at the front, and a sliding cylinder 162 that surrounds the guide body 161 from the outside in the nozzle radial direction and is slidably fitted against the inner surface of the first discharge nozzle 131.

The front end of the rod portion 151 is fitted inside the guide main body 161. This fixes the plug 13 and the guide member 160 together. The sliding cylinder 162 has a lip portion that makes tight sliding contact with the inner circumferential surface of the first discharge nozzle 131 all around the circumference of the nozzle. This ensures a predetermined seal between the lip portion and the inner circumferential surface of the first discharge nozzle 131. Therefore, it is possible to guide the contents W flowing through the discharge path 120 toward the second discharge nozzle 132 and lead them to the discharge port 8.
Furthermore, the guide member 160 slides against the inner peripheral surface of the first discharge nozzle 131, thereby guiding the plug 13 and allowing it to move stably along the nozzle axis O2.

The operating lever 170 is inserted from above into a cap tube 134 formed on the first discharge nozzle 131 , is connected to the guide member 160 , and is movable relative to the first discharge nozzle 131 .
The operating lever 170 is provided with a connecting shaft 171 disposed inside the cap tube 134, the lower end of which is connected to the guide body 161 so as to be rotatable in the front-to-rear direction, and a lever body 172 disposed above the cap tube 134 and integrally formed with the upper end of the connecting shaft 171. The lever body 172 is formed in the shape of a solid rod whose diameter gradually increases from bottom to top. This design makes it easy to grip the upper end of the lever body 172 with fingertips or the like.

The operating lever 170 configured in this manner can be tilted around the connecting part between the connecting shaft 171 and the guide body 161 so as to rotate in the forward and backward directions relative to the first discharge nozzle 131, and the stopper body 13 can be moved between the closed position P1 and the open position P2 in accordance with the tilting operation.
The rotational movement of the operating lever 170 caused by the tilting operation is converted by the operating cap 180 attached to the cap tube 134 into linear movement that moves the plug 13 and the guide member 160 linearly along the nozzle axis O2.

The operating cap 180 is formed in a cylindrical shape with a top and is attached to the cap tube 134, for example, by undercut fitting. An operating hole 181 is formed in the top wall of the operating cap 180, which penetrates the top wall from top to bottom and through which the connecting shaft 171 is inserted. The operating hole 181 is formed in an elliptical shape in a plan view, with its major axis along the nozzle axis O2 being larger than the diameter of the connecting shaft 171.

In particular, the operating hole 181 is formed so that when the stopper body 13 is positioned in the blocked position P1, the gap between the inner edge portion 181b, which is located behind the connecting shaft 171, and the connecting shaft 171 is larger than the gap between the inner edge portion 181a, which is located forward of the connecting shaft 171, and the connecting shaft 171.
As a result, when the operating lever 170 is tilted forward, the connecting shaft 171 can be brought into contact with an inner edge portion 181a of the inner periphery of the operating hole 181 that is located forward of the connecting shaft 171, and the guide member 160 can be moved rearward along the nozzle axis O2 with this contact portion as a fulcrum. This allows the plug 13 to be moved from the closed position P1 toward the open position P2.

Conversely, when the plug 13 is in the open position P2 (see Figure 3), tilting the operating lever 170 rearward causes the connecting shaft 171 to contact the inner edge portion 181b of the inner periphery of the operating hole 181, which is located rearward of the connecting shaft 171. This contact portion serves as a fulcrum, allowing the guide member 160 to move forward along the nozzle axis O2. This allows the plug 13 to move from the open position P2 toward the closed position P1.

(Action of the Discharge Container)
Next, a case where the content W is discharged using the dispensing container 1 configured as described above will be described.
1 and 2, in the initial state, the ball valve 144 in the accommodation space 140 is placed on the inner seal cylinder 53 and the outer seal cylinder 52, opening the air communication hole 141. Furthermore, the plug 13 is located in the closed position P1, closing the communication hole 135.

In this initial state, to dispense the contents W from the inner container 3, the push-down head 90 of the piston operating unit 7 is pressed down with a force greater than the elastic force of the coil spring 100. This compresses and deforms the coil spring 100, while pressing down the piston unit 6 connected to the push-down head 90 via the connecting member 110. This allows the piston unit 6 to move downward relative to the cylinder unit 5, pressurizing the air chamber 30. This maintains the ball valve 144 seated on the inner seal tube 53 and outer seal tube 52.

Therefore, the air in the air chamber 30 can be guided through the air communication passage 12 to the air hole 22 formed in the opening 4a of the outer container 4, and can be introduced between the inner container 3 and the outer container 4 through the air hole 22. This increases the pressure between the inner container 3 and the outer container 4, and pressurizes the inner container 3.
At this time, because the stopper 13 is located at the closing position P1, the inside of the discharge path 120 is closed by the stopper 13, and communication between the inside of the inner container 3 and the outside is blocked through the discharge path 120 and the discharge port 8. Therefore, the inner container 3 can be maintained in a pressurized state without being deformed or reduced in volume by a pressure increase between the inner container 3 and the outer container 4.

Furthermore, because the discharge path 120 is blocked by the stopper 13, the contents W in the inner container 2 cannot reach the discharge outlet 8. Therefore, the contents W cannot be discharged through the discharge outlet 8 simply by pressing down the piston operating part 7.

When the air chamber 30 is pressurized by the downward movement of the piston 6, the valve body 77 of the air intake valve 76 remains in contact with the piston bottom wall 70. Therefore, the air intake valve 76 is closed, and air in the air chamber 30 does not flow out through the first air intake hole 75.

When discharging the contents W from this state, the operation member 14 is used to switch the stopper body 13 from the closed state in which the inside of the discharge path 120 is closed to the open state.
3, the operating lever 170 is tilted forward to move the guide member 160 and the plug 13 rearward along the nozzle axis O2. This moves the plug 13 from the closed position P1 to the open position P2, moving the ball 150 rearward away from the valve seat 136 to open the communication hole 135. This switches the discharge passage 120 to an open state.

By opening the communication hole 135 and switching the discharge path 120 to an open state, the inside of the inner container 3 can be connected to the outside through the discharge path 120 and the discharge outlet 8, so that the contents W in the inner container 3 can be discharged to the outside through the discharge path 120 and the discharge outlet 8.
At this time, the inner container 3 can be caused to undergo volume reduction (shrinkage) as the content W is discharged. Moreover, the inner container 3 is maintained in a pressurized state as shown by the arrow in Figure 3 due to the increase in pressure between the inner container 3 and the outer container 4, which can promote volume reduction of the inner container 3 as the content W is discharged. Therefore, the content W can be discharged efficiently.

In addition, since the inner container 3 can be deformed by reducing its volume as the contents W are discharged, the pressurized state of the inner container 3 can be released. Furthermore, even if the depression operation of the depression head 90 continues, the piston bottom wall 70 comes into contact with the cylinder bottom wall 31 from above, preventing further downward movement of the depression head 90 (see Figure 4).

When the pressing force on the presser head 90 is released, the presser head 90 is pushed up by the biasing force (elastic restoring force) of the coil spring 100, causing the piston portion 6, which is connected to the presser head 90 via the connecting member 110, to move upward together with the presser head 90 relative to the cylinder portion 5. This allows the piston portion 6 to be pulled back to its original state, as shown in Figure 3. As a result, the volume of the air chamber 30 increases, causing the internal pressure of the air chamber 30 to decrease and become negative.

This causes the ball valve 144 in the storage space 140 to move upward, closing the air communication hole 141 from below. This prevents air introduced between the inner container 3 and the outer container 4 from flowing back toward the air chamber 30 through the air hole 22 and the air communication passage 12. This prevents air that has been introduced between the inner container 3 and the outer container 4 from being expelled.

As shown in Figure 4, repeated operation of the piston operating unit 7 allows additional air to be introduced between the inner container 3 and the outer container 4, thereby increasing the pressure between the inner container 3 and the outer container 4 again. As a result, the inner container 3 is gradually reduced in volume while the contents W are steadily discharged.

When discharging the contents W, if the stopper 13 is positioned in the open position P2 and the discharge path 120 is kept open, an amount of contents W corresponding to the pressurization of the inner container 3 will be discharged. Therefore, the contents W will not be discharged in excess of the amount corresponding to the pressurization of the inner container 3. After a predetermined amount of contents W has been discharged, the stopper 13 is moved to the closed position P1, switching the discharge path 120 back to a closed state, and the contents W will no longer remain in the discharge path 120 but will instead be contained within the inner container 3, as shown in Figure 1.

In contrast, if the stopper 13 is moved to the closed position P1, for example, midway through the discharge of the contents W, and the discharge path 120 is switched to a closed state, the contents W will remain drawn into the discharge path 120, as shown in Figure 4.

When the internal pressure of the air chamber 30 decreases as the piston 6 is pulled back, the valve body 77 of the air intake valve 76 moves downward and separates from the piston bottom wall 70. In addition, Figure 3 illustrates a state in which the valve body 77 is in contact with the piston bottom wall 70.
This allows the air inlet valve 76 to open, and air can be introduced from the outside into the air chamber 30 through the second air inlet hole 113 and the first air inlet hole 75. This allows the piston part 6 to stably move upward, and the push-down head 90 to stably return to its original state.

In particular, according to the discharge container 1 of this embodiment, the contents W are discharged by performing two different operations: first, the piston portion 6 is pushed in by pressing down the pressing head 90 in the piston operating portion 7, and then the stopper body 13 is switched from a closed state to an open state by using the operating member 14.
Therefore, even if the piston operating unit 7 is operated by mistake, it is possible to prevent the contents W from being discharged. Furthermore, even if the operating member 14 is operated by mistake (the operating lever 170 is tilted) before the piston operating unit 7 is operated after the contents W is discharged, the inner container 3 is not pressurized by air from the air chamber 30, so it is possible to prevent the contents W from being discharged.

For these reasons, the dispensing container 1 of this embodiment can prevent unintended dispensing of the contents W.

Furthermore, the stopper body 13 can be moved from the closed position P1 to the open position P2 with a simple operation (one-touch operation) of simply tilting the operating lever 170 with a fingertip or the like, making it easy to discharge the contents W.
In particular, since the operating lever 170 is provided on the discharge nozzle 122 in which the discharge outlet 8 is formed, the operating lever 170 can be tilted near the discharge outlet 8, facilitating the discharge of the contents W. Therefore, various uses are possible, such as tilting the operating lever 170 while a cup or the like is waiting at the discharge outlet 8, to pour the contents W into the cup, thereby improving convenience.

Furthermore, according to the dispensing container 1 of this embodiment, when dispensing the contents W, the stopper 13 is positioned at the open position P2 by tilting the operating lever 170, and the contents W are dispensed while the inner container 3, which has been pressurized by the air introduced between the inner container 3 and the outer container 4, is deformed to reduce its volume. Therefore, when a carbonated drink, beer, or the like is used as the contents W, the pressure generated by the foaming of the contents W itself can be utilized in addition to the pressure of the air, so that the contents W can be dispensed even more efficiently.
Therefore, carbonated drinks, beer, etc. can be suitably used as the contents W. In particular, when beer is used as the contents W, the beer can be dispensed as if poured into a glass by tilting the operating lever 170, so the dispensing container 1 of this embodiment can be used as a beer server.

The above describes an embodiment of the present invention, but this embodiment is presented as an example and is not intended to limit the scope of the invention. This embodiment can be implemented in a variety of other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. In addition, variations on each embodiment can be combined as appropriate. Furthermore, this embodiment and its variations include, for example, those that would be easily imagined by a person skilled in the art, those that are substantially the same, and those that are equivalent.

For example, in the above embodiment, the operating member 14 is described as having a tiltable operating lever 170, but this is not limited to this. For example, the stopper 13 may be switched from a closed state to an open state using an operating lever that can slide along the nozzle axis O2.

Furthermore, the example described above uses a ball valve 144 provided in the storage space 140 as an air valve that allows air to flow from the air chamber 30 toward the air hole 22 and restricts the flow in the opposite direction, but this is not limited to this case, and a valve body such as a three-point valve may also be used as the air valve.
In this embodiment, an elastic member such as a coil spring may be provided between the ball valve 144 and the seal body 50 to constantly bias the ball valve 144 upward and close the air communication hole 141. In this case, the backflow of air toward the air chamber 30 can be more effectively suppressed. Therefore, the air that has been introduced between the inner container 3 and the outer container 4 can be effectively prevented from being discharged.

Furthermore, in the above embodiment, the container body is a peelable laminated container in which the inner container is peelably laminated to the inner surface of the outer container, but this is not limited to this, and it may also be a double container in which a gap is secured between the inner and outer containers, for example.

Furthermore, in the above embodiment, the stopper body 13 is movably positioned within the discharge path 120 (specifically, within the first discharge nozzle 131), and the stopper body 13 is moved within the discharge path 120 using the operating lever 170, and switched between the closed position P1 and the open position P2, thereby regulating the flow of the contents W, but this is not limited to this case.
For example, the discharge member may be a tube such as a deformable silicone tube that communicates with the interior of the inner container 3 and through which the contents W flow, and the stopper may be disposed on the outside of the tube so that the tube can be crushed. An operating member including an operating lever may be configured to switch the stopper between a pressing position where the tube is crushed and a release position where the crushing is released.
Even in this case, by switching the stopper from the release position to the pressing position with the operating member, the stopper can be used to crush and deform the tube body, thereby blocking the discharge path (inside the tube body), thereby restricting the flow of contents toward the discharge port and achieving the same effects as in the above embodiment.

W...Contents P1...Closed position P2...Open position 1...Discharge container 2...Container body 3...Inner container 4...Outer container 5...Cylinder portion 6...Piston portion 7...Piston operating portion 8...Discharge port 9...Discharge member 12...Air communication passage 13...Plug 14...Operating member 20...Mouth portion of container body 22...Air hole (air introduction portion)
30: Air chamber 120: Discharge passage 122: Discharge nozzle (discharge tube)
135...communicating hole 136...valve seat 144...ball valve (air valve)
170...Operating lever

Claims (3)

a container body having an inner container that shrinks and deforms as the contained contents decrease, and an outer container in which the inner container is housed;
a cylinder portion disposed above the mouth of the container body with a central axis of the container body and a cylinder axis coaxially arranged, the interior of the cylinder portion serving as an air chamber;
a mounting tube portion disposed between the mouth portion of the container body and the cylinder portion;
a piston portion disposed coaxially with the cylinder axis within the cylinder portion and slidably in the up and down direction;
a piston operating portion for operating the piston portion;
an air valve provided in an air communication passage that connects an air introduction section that introduces air between the inner container and the outer container with the air chamber, the air valve allowing air to flow from the air chamber toward the air introduction section and restricting air flow in the opposite direction;
a discharge member having a discharge port for discharging the contents and a discharge path connecting the inside of the discharge port with the inside of the inner container;
a plug that releasably closes the discharge path and restricts the flow of the contents from the inner container toward the discharge outlet;
an operating member for switching the plug from a closed state in which the discharge passage is closed to an open state,
The piston operating unit is
an inner lid fixed to the upper end of the cylinder portion in a state of being disposed coaxially with the cylinder shaft;
a depression head combined with the piston portion, the depression head being capable of being depressed with respect to the cylinder portion and the inner lid in a state where the depression head is disposed coaxially with the cylinder shaft,
The discharge container is characterized in that the discharge member is formed integrally with the lower end of the cylinder portion and the mounting tubular portion, and protrudes toward a side of the cylinder portion. The discharge container according to claim 1,
the discharge member includes a discharge tube whose inside serves as the discharge path and in which the discharge port is formed,
a valve seat having a communication hole formed therein that communicates between the interior of the discharge port and the interior of the inner container,
the plug is disposed in the discharge cylinder so as to be movable between a closing position where the plug contacts the valve seat to close the communication hole and an opening position where the plug is separated from the valve seat to open the communication hole,
The operating member is disposed outside the discharge tube and is movable relative to the discharge tube, and includes an operating lever that moves the plug between the closed position and the open position. The discharge container according to claim 1 or 2,
The container body is a biaxially stretched blow molded container.