Discharge container

Abstract

To suppress unintended discharge of contents.SOLUTION: A discharge container 1 includes: a container body 2 that has an inner container 3 and an outer container 4 that are reduced in volume and deformed as contents decrease; a cylinder part 5 that has an air chamber; a piston part 6; a piston operation part 7; an air valve 144 that is provided in an air communication passage 12 communicating the inside of an air introduction part 22 introducing air between the inner container and the outer container and the inside of the air chamber, permits the flow of air from the air chamber toward the air introduction part, and restricts the flow in the opposite direction; a discharge member 9 that has a discharge passage 120 communicating between the inside of a discharge port 8 and the inside of the inner container; a plug body 13 that releasably closes the inside of the discharge passage and regulates the flow of the contents from the inside of the inner container toward the discharge port; and an operating member 14 that switches the plug body from a closed state in which the inside of the discharge passage is closed to an open state.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a discharge container.

Background Art

[0002] Conventionally, as shown in, for example, Patent Document 1 below, there are a container body, a cylinder part, a piston part slidably disposed in the cylinder part, a piston operation part for operating the piston part, a suction part communicating with a liquid chamber in the cylinder part, a suction valve disposed inside the suction part and opening in conjunction with the pulling-back operation of the piston part, a mounting cylinder part disposed at the mouth part of the container body, a nozzle part directly connected to the cylinder part so as to protrude toward the side of the cylinder part and communicating with the liquid chamber, and a discharge valve disposed inside the nozzle part and opening in conjunction with the pushing operation of the piston part. A discharge container provided with these is known.

[0003] According to the above discharge container, by operating the piston operation part to push in the piston part, the content stored in the liquid chamber in the cylinder part can be discharged to the outside through the discharge valve and the nozzle part. Thereafter, by pulling back the piston part, the content can be sucked into the liquid chamber through the suction valve and the suction part and stored, and preparations can be made for the next discharge.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in the above conventional discharge container, for example, when the piston part is pushed in by accidentally touching the piston operation part, the content may be unexpectedly discharged. Therefore, there was a risk of causing an unintended discharge of the content.

[0006] The present invention has been made in view of such circumstances, and an object thereof is to provide a discharge container capable of suppressing the discharge of unintended contents.

Means for Solving the Problems

[0007] (1) The discharge container according to the present invention includes an inner container that decreases in volume 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 portion of the container body with the central axis and the cylinder axis of the container body coaxially arranged, and having an air chamber inside, A mounting cylinder portion disposed between the mouth portion of the container body and the cylinder portion, a piston portion disposed coaxially with the cylinder axis and slidable up and down within the cylinder portion, a piston operation portion for operating the piston portion, an air introduction portion for introducing air between the inner container and the outer container, an air valve provided in an air communication passage communicating the air chamber and the air introduction portion, allowing the flow of air from the air chamber toward the air introduction portion and restricting the reverse flow, a discharge port for discharging the contents, and a discharge member having a discharge passage communicating the inside of the discharge port and the inside of the inner container, a plug body for openably closing the discharge passage and restricting the flow of the contents from the inside of the inner container toward the discharge port, and an operation member for switching the plug body from a closed state closing the discharge passage to an open state. The piston operation portion includes a middle lid fixed to the upper end portion of the cylinder portion in a state of being disposed coaxially with the cylinder axis, and a push-down head disposed coaxially with the cylinder axis and capable of being pushed down with respect to the cylinder portion and the middle lid and combined with the piston portion. The discharge member is integrally formed with the lower end portion of the cylinder portion and the mounting cylinder portion, and protrudes laterally of the cylinder portion.

[0008] According to the discharge container of the present invention, by operating the piston operation part to push in the piston part, the air chamber can be pressurized, and the air in the air chamber can be introduced into the air communication passage. Thereby, the air in the air chamber can be introduced between the inner container and the outer container via the air valve and the air introduction part, and the pressure between the inner container and the outer container can be increased. Therefore, the inner container can be pressurized. At this time, since the discharge path is blocked by the plug body, the communication between the inside of the inner container and the outside is blocked through the discharge path and the discharge port. Therefore, the inner container can be maintained in a pressurized state without being reduced in volume and deformed by the pressure increase between the inner container and the outer container. Further, since the discharge path is blocked by the plug body, the content in the inner container does not reach the discharge port. Therefore, just by operating the piston operation part, the content cannot be discharged through the discharge port.

[0009] When discharging the content from this state, an operation is performed using the operation member to switch the plug body from the closed state blocking the discharge path to the open state. Thereby, since the inside of the inner container and the outside can be communicated through the discharge path and the discharge port, the content in the inner container can be discharged to the outside through the discharge path and the discharge port. At this time, the inner container can be reduced in volume and deformed (shrunk and deformed) as the content is discharged. Moreover, since the inner container was maintained in a pressurized state due to the pressure increase between the inner container and the outer container, the reduction in volume deformation of the inner container can be promoted as the content is discharged. Therefore, the content can be discharged efficiently.

[0010] In addition, since the inner container can be reduced in volume and deformed as the content is discharged, the pressurized state of the inner container can be released. Further, as the piston portion that has been further pushed in is pulled back, the air chamber becomes negative pressure, but the air valve can be used to regulate the reverse flow of air from the air introduction portion side into the air chamber. Therefore, it is possible to suppress the discharged air that has once been introduced between the inner container and the outer container from being discharged. Accordingly, with repeated operation of the piston operation portion, air can be further introduced between the inner container and the outer container, and the pressure between the inner container and the outer container can be increased again. As a result, the content can be stably discharged while gradually reducing the volume and deforming the inner container.

[0011] In particular, after the piston portion is pushed in by the piston operation portion, the content is discharged by performing two different operations of switching the plug body to the open state by the operation member. Therefore, for example, even if the piston operation portion is accidentally operated, it is possible to suppress the discharge of the content. Further, even if the operation member is accidentally operated before the operation of the piston operation portion after the discharge of the content, since the inner container is not pressurized by the air from the air chamber, it is possible to suppress the discharge of the content. From these facts, it is possible to suppress the unintentional discharge of the content.

[0012] (2) The discharge member, It may include a discharge cylinder having an inner side as the discharge path and formed with the discharge port, and a valve seat having a communication hole formed therein for communicating the inside of the discharge port and the inside of the inner container is provided in the discharge cylinder. The plug body is disposed in the discharge cylinder so as to be movable between a closed position in contact with the valve seat to close the communication hole and an open position separated from the valve seat to open the communication hole. The operation member is disposed outside the discharge cylinder and is provided so as to be movable with respect to the discharge cylinder, and may include an operation lever for moving the plug body between the closed position and the open position.

[0013] In this case, since the plug body can be moved from the closed position to the open position by a simple operation (one-touch operation) of operating the operation lever with a fingertip or the like, the operation of discharging the contents can be easily performed. In particular, since the operation lever is provided on the discharge cylinder in which the discharge port is formed, the operation lever can be operated near the discharge port, and it is easy to perform the operation of discharging the contents. Therefore, for example, it is easy to perform various usage methods such as operating the operation lever while waiting for a cup or the like at the discharge port and pouring the contents into the cup, and the convenience can be improved.

[0014] (3) The container body may be a biaxially stretched blow molded container.

[0015] In this case, after the inner preform and the outer preform are combined in a double (inner and outer) manner, the container body can be formed by biaxially stretch blow molding. Therefore, the container body can be, for example, a laminated peelable container (delaminated bottle) in which an inner container is laminated on the inner surface of an outer container so as to be peelable.

Effects of the Invention

[0016] According to the present invention, it is possible to provide a discharge container that can suppress the discharge of unintended contents.

Brief Description of the Drawings

[0017]

Figure 1

Figure 2

Figure 3

Figure 4

Modes for Carrying Out the Invention

[0018] Hereinafter, an embodiment of a discharge container according to the present invention will be described with reference to the drawings. As shown in FIG. 1, the discharge container 1 of the present embodiment includes a flexible inner container 3 that houses the content W and contracts and deforms (shrinks and deforms) as the content W decreases, and an outer container 4 in which the inner container 3 is installed. A container body 2, a cylinder portion 5 formed in a bottomed cylindrical shape, a piston portion 6 slidably disposed in the cylinder portion 5, a piston operation portion 7 for operating the piston portion 6, a discharge port 8 for discharging the content W, a discharge member 9 protruding toward the side of the cylinder portion 5, a mounting cylinder portion 10 disposed between the mouth portion 20 of the container body 2 and the cylinder portion 5, and a mounting cap 11 attached to the mouth portion 20 of the container body 2 for fixing the mounting cylinder portion 10 and the mouth portion 20 of the container body 2.

[0019] In the present 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. Then, the cylinder portion 5, the piston portion 6, the mounting cylinder portion 10, and the mounting cap 11 are arranged coaxially with the central axis of the cylinder portion 5. In the present embodiment, the central axis of the cylinder portion 5 is referred to as the cylinder axis O1, the side of the piston operation portion 7 along the cylinder axis O1 is the upper side, and the side of the container body 2 is the lower side. Furthermore, in a plan view seen from the direction of the cylinder axis O1, the direction intersecting the cylinder axis O1 is referred to as the radial direction, and the direction of orbiting around the cylinder axis O1 is referred to as the circumferential direction. Further, among the radial directions, the direction in which the discharge member 9 protrudes from the cylinder portion 5 is the front, and the opposite direction is the rear.

[0020] The content W accommodated in the inner container 3 is not particularly limited, but liquid contents (content liquids) such as liquid foods and liquid cosmetics can be preferably used. In particular, as the content W, a foaming carbonated beverage (including alcoholic beverages such as beer) or a content liquid that generates gas can be preferably used. In each drawing, the content W is illustrated with dot hatching.

[0021] (Container body) The container body 2 is a biaxially stretched blow molded container. Specifically, the container body 2 is a laminated peelable container (delaminated bottle) in which the inner container 3 is laminated on the inner surface of the outer container 4 in a peelable manner. An outer preform for the outer container 4 and an inner preform for the inner container 3 are formed by injection molding or the like, and after these are combined in a double (inner and outer) manner, they are formed by biaxially stretched blow molding. Note that it is also possible to first perform biaxially stretched blow molding on the outer preform to form the outer container 4, then place the inner preform inside, and then perform biaxially stretched blow molding on the inner preform to form the container body 2.

[0022] The materials of the inner container 3 and the outer container 4 are synthetic resin materials, and they may be the same material or different materials from each other. In the present embodiment, the inner container 3 and the outer container 4 are formed of PET (polyethylene terephthalate). However, it is not limited to PET. As the synthetic resin material, for example, PP (polypropylene), PE (polyethylene), nylon (polyamide), and EVOH (ethylene-vinyl alcohol copolymer) etc. may be adopted. Furthermore, it is not limited to the case of being formed of one type of synthetic resin material, and the inner container 3 and the outer container 4 may be formed by laminating different types of synthetic resin materials.

[0023] The container body 2 is formed in a bottomed cylindrical shape (for example, a bottle shape) in which a mouth portion 20, a shoulder portion 21, a body portion (not shown), and a bottom portion (not shown) are continuously provided in order from above. As shown in FIG. 2, the mouth portion 20 of the container body 2 is formed to extend upward from the upper end opening of the shoulder portion 21. The mouth portion 20 of the container body 2 is composed of the mouth portion 3a of the inner container 3 and the mouth portion 4a of the outer container 4. In the mouth portion 4a of the outer container 4, an air hole (air introduction portion according to the present invention) 22 for introducing air guided through an air communication passage 12 described later is formed between the outer container 4 and the inner container 3.

[0024] In the illustrated example, a plurality of air holes 22 are formed at intervals in the circumferential direction of the mouth portion 4a of the outer container 4. However, it is not necessary to form a plurality of air holes 22, and only one air hole 22 may be formed in the mouth portion 4a of the outer container 4.

[0025] At the upper end of the mouth portion 3a of the inner container 3, a flange portion 3b is provided to block the upper end opening of the mouth portion 4a of the outer container 4 from above. Therefore, the inner container 3 is laminated on the upper end portion of the mouth portion 4a of the outer container 4 in a state where the mouth portion 4a of the outer container 4 is blocked using the flange portion 3b.

[0026] On the outer peripheral surface of the mouth portion 4a of the outer container 4, a first screw portion (for example, a female screw portion 23) is formed, and an annular seal protrusion 24 protruding radially outward is formed in a portion located below the air hole 22. The seal protrusion 24 protrudes radially outward from the first screw portion 23. Note that the first screw portion 23 is not formed spirally over 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 with the air hole 22 in the radial direction. As a result, the portion divided in the circumferential direction in the first screw portion 23 vertically bisects the first screw portion 23 and serves as an air groove communicating with the air hole 22.

[0027] (Cylinder portion) The cylinder portion 5 is disposed above the mouth portion 20 of the container body 2 coaxially with the cylinder axis O1, and is formed in a bottomed cylindrical shape that opens upward. Inside the cylinder portion 5, an air chamber 30 for introducing air between the inner container 3 and the outer container 4 is formed through the air hole 22 formed in the mouth portion 4a of the outer container 4. In a portion of the cylinder bottom wall 31 of the cylinder portion 5 that is located behind the cylinder axis O1, an air cylinder 32 protruding downward from the cylinder bottom wall 31 is integrally formed. The air cylinder 32 is formed in a bottomed cylindrical shape that opens upward. Therefore, the inside of the air cylinder 32 is always in communication with the air chamber 30.

[0028] (Mounting cylinder portion) The mounting cylinder part 10 is a member disposed on the upper end opening edge of the mouth part 20 of the container body 2, and includes a main body cylinder part 40 extending downward from the cylinder bottom wall 31, and a sealing body 50 fixed to the lower end part of the main body cylinder part 40. In this embodiment, the main body cylinder part 40 and the sealing body 50 are formed separately, but it is not limited to this case, and the mounting cylinder part 10 may be configured by integrally forming the main body cylinder part 40 and the sealing body 50.

[0029] The main body cylinder part 40 is disposed coaxially with the cylinder axis O1, and the upper end part is integrally formed with the cylinder bottom wall 31. A part of the main body cylinder part 40 also serves as a part of the air cylinder 32 described above. An annular flange part 41 protruding outward in the radial direction is formed at the lower end part of the main body cylinder part 40. The flange part 41 is disposed on the upper end opening edge of the mouth part 20 of the container body 2 via a sealing ring 51 described later. Note that 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 cylinder part 40. The reinforcing ribs 42 are integrally formed with the cylinder bottom wall 31 and the flange part 41.

[0030] The sealing body 50 includes a sealing ring 51 disposed on the upper end opening edge of the mouth part 20 of the container body 2 (specifically, on the flange part 3b of the inner container 3), an outer sealing cylinder 52 protruding upward from the sealing ring 51 and fitted into the inside of the main body cylinder part 40 from below, and an inner sealing cylinder 53 protruding upward from the inner peripheral edge part of the sealing ring 51.

[0031] The sealing ring 51 is pressed against the upper end opening edge of the mouth part 20 of the container body 2 from above by the flange part 41 of the main body cylinder part 40. Thereby, the sealing ring 51 is in close contact with the upper end opening edge of the mouth part 20 of the container body 2, and seals the mouth part 20 of the container body 2. The outer seal cylinder 52 and the inner seal cylinder 53 are arranged with a gap in the radial direction, and the height positions of their upper end edges are made equal. At this time, the outer seal cylinder 52 and the inner seal cylinder 53 are formed to be positioned below the bottom of the air cylinder 32 with a certain gap from the bottom of the air cylinder 32.

[0032] (Mounting cap) The mounting cap 11 is formed in a cylindrical shape that surrounds the flange portion 41 of the main body cylinder portion 40 and the mouth portion 20 of the container body 2 from the outside in the radial direction, and is arranged coaxially with the cylinder axis O1. The upper end portion of the mounting cap 11 is positioned slightly above the flange portion 41 of the main body cylinder portion 40, and the lower end portion is positioned slightly below the seal protrusion 24 formed on the mouth portion 20 of the container body 2. An annular connecting ring 60 that protrudes inward in the radial direction is formed at the upper end portion of the mounting cap 11. The connecting ring 60 is in contact with the flange portion 41 of the main body cylinder portion 40 from above. Thereby, the mounting cap 11 is combined with the main body cylinder portion 40 so as to be relatively rotatable around the cylinder axis O1 while being prevented from coming off downward.

[0033] A second screw portion (for example, a male screw portion) 61 that is screwed into the first screw portion 23 formed at the mouth portion 4a of the outer container 4 is formed on the inner peripheral surface of the mounting cap 11. Thereby, by mounting the mounting cap 11 to the mouth portion 20 of the container body 2 by screwing, while pressing the entire mounting cylinder portion 10 onto the upper end opening edge of the mouth portion 20 of the container body 2 using the connecting ring 60, the mouth portion 20 of the container body 2 and the mounting cylinder portion 10 can be fixed.

[0034] Note that when the mounting cap 11 is mounted on the mouth portion 20 of the container body 2, it is undercut and fitted to the seal protrusion 24. As a result, the mounting cap 11 is mounted in a state where rotation in the loosening direction is suppressed. Further, the mounting cap 11 is mounted in a state of being in close contact with the seal protrusion 24. Thereby, the space between the mounting cap 11 and the seal protrusion 24 is sealed, and the flow of air through the space between the mounting cap 11 and the seal protrusion 24 is suppressed.

[0035] (Piston part) The piston part 6 is disposed in the cylinder part 5 so as to be vertically slidable, and defines an air chamber 30 between itself and the cylinder bottom wall 31. That is, the space portion located below the piston part 6 within the cylinder part 5 is the air chamber 30. The piston part 6 includes an annular piston bottom wall 70 disposed 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 that surrounds the piston peripheral wall 71 from the outside in the radial direction and is slidably fitted to the inner peripheral surface of the cylinder part 5, and a protruding cylinder 73 protruding upward from the inner peripheral edge of the piston bottom wall 70.

[0036] The piston bottom wall 70 is disposed opposite to the cylinder bottom wall 31 with a space therebetween above. A connecting flange 112, which will be described later, is combined with the piston bottom wall 70 from above. The piston peripheral wall 71 is formed in a cylindrical shape surrounding 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 formed in a tapered shape that gradually expands in diameter upward and downward from the central portion in the vertical direction, and has lip portions located at both ends in the vertical direction. The lip portions are in close sliding contact with the inner peripheral surface of the cylinder part 5. Thereby, a predetermined sealing property is ensured between the lip portions and the inner peripheral surface of the cylinder part 5.

[0037] The protruding cylinder 73 is formed with a partition wall that vertically partitions the inside of the protruding cylinder 73. On the partition wall, a shaft body 74 extending downward is formed coaxially with the cylinder shaft O1, and a first air introduction hole 75 penetrating the partition wall vertically is formed. In the present 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.

[0038] On the lower surface side of the piston bottom wall 70, an air introduction valve 76 for introducing air into the air chamber 30 is arranged using the shaft body 74. The air introduction valve 76 includes a cylindrical body portion fitted to the shaft body 74, and an elastically deformable valve body 77 projecting annularly outward in the radial direction from the cylindrical body portion, with the outer end portion being a free end. The valve body 77 has its outer end portion abutting against the piston bottom wall 70 so as to be separable from below over the entire circumference. Thereby, the air introduction valve 76 closes the first air introduction hole 75 so as to be openable from the air chamber 30 side. Therefore, the air introduction valve 76 functions as a check valve that allows the inflow of air from the outside into the air chamber 30 through the first air introduction hole 75 and restricts the outflow of air from the air chamber 30 to the outside through the first air introduction hole 75.

[0039] (Piston operating portion) The piston operating portion 7 includes a middle lid 80 fixed to the upper end portion of the cylinder portion 5, a pressing head 90 that can be pushed down with respect to the cylinder portion 5 and the middle lid 80, a coil spring 100 that biases the pressing head 90 upward with respect to the middle lid 80, and a connecting member 110 that connects the pressing head 90 and the piston portion 6.

[0040] The middle cover 80 includes an annular top wall portion 81 disposed on the upper end opening edge of the cylinder portion 5, an outer cylinder 82 extending downward from the outer peripheral edge portion of the top wall portion 81 and surrounding the cylinder portion 5 from the radially outer side, an inner cylinder 83 extending downward from the inner peripheral edge portion of the top wall portion 81 and disposed inside the cylinder portion 5 with a gap therebetween, an annular wall 84 protruding radially inward from the lower end portion of the inner cylinder 83, and a guide cylinder 85 protruding upward from the inner peripheral edge portion of the annular wall 84, and is disposed coaxially with the cylinder axis O1.

[0041] The outer cylinder 82 is, for example, undercut and fitted to the upper end portion of the cylinder portion 5. Thereby, the middle cover 80 is combined with the upper end portion of the cylinder portion 5 in a state where it is prevented from coming off upward. The inner cylinder 83 is formed so that its diameter gradually decreases from top to bottom, and its lower end portion is disposed above a connecting flange 112 described later. On the lower surface of the annular wall 84, a stopper 86 is formed which protrudes downward and contacts the connecting flange 112 described later from above. The guide cylinder 85 is disposed inside the inner cylinder 83 and guides the movement of the pressing head 90 along the vertical direction.

[0042] The pressing head 90 includes an annular top wall portion 91, an outer head cylinder 92 extending downward from the outer peripheral edge portion of the top wall portion 91 and surrounding the outer cylinder 82 of the middle cover 80 from the radially outer side, an inner head cylinder 93 extending downward from the inner peripheral edge portion of the top wall portion 91 and disposed inside the guide cylinder 85 of the middle cover 80, and a holding cylinder 94 protruding downward from the top wall portion 91 and surrounding the inner head cylinder 93 from the radially outer side, and is disposed coaxially with the cylinder axis O1.

[0043] The outer head cylinder 92 is movable in the vertical direction with respect to the outer cylinder 82 of the middle cover 80, and its lower end portion is disposed at the same height as the lower end portion of the outer cylinder 82. The inner head cylinder 93 is movable in the vertical direction with respect to the guide cylinder 85 of the middle lid 80, and its lower end is disposed slightly above the annular wall 84 of the middle lid 80. Further, the inner head cylinder 93 is combined with the guide cylinder 85 of the middle lid 80 so as not to be movable in the circumferential direction. Therefore, it is possible to push down the pressing head 90 in a state where it cannot rotate relative to the middle lid 80 and the cylinder part 5 around the cylinder axis O1.

[0044] The coil spring 100 is disposed in a vertically compressed state between the middle lid 80 and the pressing head 90, and biases the pressing head 90 upward with respect to the middle lid 80. Specifically, the coil spring 100 is disposed between the annular wall 84 of the middle lid 80 and the top wall portion 91 of the pressing head 90 in a state where the lower end portion is fitted inside the inner cylinder 83 of the middle lid 80 and the upper end portion is fitted inside the holding cylinder 94.

[0045] The connecting member 110 includes a toped cylindrical connecting cylinder 111 disposed coaxially with the cylinder axis O1, and an annular connecting flange 112 protruding radially outward from the lower end portion of the connecting cylinder 111. The connecting cylinder 111 is fitted downward inside the inner head cylinder 93 of the pressing head 90. Thereby, the connecting member 110 is movable in the vertical direction along with the pressing head 90. Note that the upper end surface of the connecting cylinder 111 is flush with the upper surface of the top wall portion 91 of the pressing head 90.

[0046] The lower end portion of the connecting cylinder 111 is fitted into the protruding cylinder 73 of the piston portion 6. The connecting flange 112 is fitted inside the piston peripheral wall 71 in a state of being disposed on the upper surface of the piston bottom wall 70. Thereby, the connecting member 110 is integrally combined with the piston portion 6. Therefore, the pressing head 90 and the piston portion 6 are integrally combined via the connecting member 110. Therefore, the piston portion 6 is movable in the vertical direction along with the pressing head 90.

[0047] Note that the connecting flange 112 is in contact with the stopper 86 formed on the annular wall 84 of the middle lid 80 from below. Therefore, the upward movement of the pressing head 90 and the piston portion 6 due to the biasing force (elastic restoring force) of the coil spring 100 can be restricted, and the uppermost position of the pressing head 90 and the piston portion 6 can be defined.

[0048] In the piston operating portion 7 configured as described above, a second air introduction hole 113 penetrating the connecting cylinder 111 of the connecting member 110 in the radial direction is formed in the connecting cylinder 111. Thereby, the second air introduction hole 113 and the first air introduction hole 75 communicate with each other. Further, the second air introduction hole 113 communicates with the outside through a gap or the like between the connecting cylinder 111 and the inner head cylinder 93. Therefore, it is possible to introduce air into the air chamber 30 from the outside through the second air introduction hole 113 and the first air introduction hole 75.

[0049] (Discharge member) The discharge member 9 has a discharge port 8 for discharging the content W and a discharge path 120 communicating the inside of the discharge port 8 and 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 includes a base end cylinder portion 121 integrally formed with the lower end portion of the cylinder portion 5 and the main body cylinder portion 40 of the mounting cylinder portion 10, and a discharge nozzle (discharge cylinder according to the present invention) 122 combined with the base end cylinder portion 121.

[0050] Note that the central axis of the discharge nozzle 122 is referred to as a nozzle axis O2, and the direction along the nozzle axis O2 is referred to as the nozzle axis O2 direction. Further, the direction intersecting the nozzle axis O2 as viewed from the nozzle axis O2 direction is referred to as the nozzle diameter direction, and the direction orbiting around the nozzle axis O2 is referred to as the nozzle circumferential direction. In the present embodiment, the discharge member 9 is formed so as to extend obliquely downward in front of the cylinder portion 5. However, it is not limited to this case, and the discharge member 9 may be formed so as to extend horizontally toward the front of the cylinder portion 5.

[0051] The proximal end cylinder portion 121 is formed to extend along the nozzle axis O2 from the connection portion between the portion located on the front side of the main body cylinder portion 40 and the lower end portion of the cylinder portion 5. The rear end portion of the proximal end cylinder portion 121 enters inside the main body cylinder portion 40 and opens inside the main body cylinder portion 40.

[0052] A connection cylinder 125 extending downward is integrally formed at the rear end portion of the proximal end cylinder portion 121. The connection cylinder 125 is arranged coaxially with the cylinder axis O1 and extends downward with a length sufficient to enter the inner container 3 from above. A part of the upper end portion of the connection cylinder 125 is integrally formed with the bottom portion of the air cylinder 32 formed in the cylinder bottom wall 31. Thereby, the connection cylinder 125 is fixed to the proximal end cylinder portion 121 and the air cylinder 32.

[0053] Furthermore, the connection cylinder 125 is inserted into the inner seal cylinder 53 of the seal body 50 and is closely fitted to the inside of the inner seal cylinder 53. Thereby, a predetermined sealing property is ensured between the connection cylinder 125 and the inner seal cylinder 53.

[0054] A pipe 126 is fitted inside the connection cylinder 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 inside the inner container 3 (see FIG. 1). Thereby, the inside of the proximal end cylinder portion 121 is always in communication with the inside of the inner container 3 through the inside of the pipe 126. Note that the pipe 126 may extend to near the bottom of the inner container 3.

[0055] However, the pipe 126 is not essential and may not be provided. In this case, it is possible to supply the content W in the inner container 3 into the proximal end cylinder portion 121 through the inside of the connection cylinder 125. Further, in this case, instead of the pipe 126, for example, a regulating member formed in a cross shape in cross section and extending in the vertical direction may be fitted inside the connection cylinder 125. The regulating member has a length that enters the inner container 2 and regulates the inner container 2 from closing the lower end opening portion of the connection cylinder 125 when the inner container 2 is reduced in volume and deformed.

[0056] The discharge nozzle 122 is combined by being attached to the proximal cylinder portion 121 configured as described above from the front. In the illustrated example, the nozzle cylinder is undercut and fitted to the proximal cylinder portion 121 and is externally fitted in a state where it is prevented from coming off. The discharge nozzle 122 includes a first discharge nozzle 131 extending along the nozzle axis O2 from the proximal cylinder portion 121, and a second discharge nozzle 132 bifurcated downward in a bifurcated shape from the middle of the first discharge nozzle 131.

[0057] The first discharge nozzle 131 opens toward the front side. However, a closing plate 133 is fitted from the front inside the front end portion of the first discharge nozzle 131. Thereby, the front end opening of the first discharge nozzle 131 is blocked by the closing plate 133. Further, a cap cylinder 134 protruding upward so as to be orthogonal to the nozzle axis O2 is formed at the tip of the first discharge nozzle 131.

[0058] The second discharge nozzle 132 is formed to branch and extend from the middle of the first discharge nozzle 131 so as to be further inclined downward than the first discharge nozzle 131. And the tip opening of the second discharge nozzle 132 is a discharge port 8 for discharging the content W. In the illustrated example, the second discharge nozzle 132 is formed such that the discharge port 8 is not directly below but obliquely forward and downward. However, the second discharge nozzle 132 may be formed such that the discharge port 8 faces directly downward.

[0059] The inside of the proximal cylinder portion 121 and the discharge nozzle 122 configured as described above functions as a discharge path 120 that communicates the inside of the discharge port 8 and the inside of the inner container 3 through the pipe 126. Furthermore, inside the first discharge nozzle 131, an annular valve seat 136 having a communication hole 135 that communicates the inside of the discharge port 8 and the inside of the inner container 3 is formed. The valve seat 136 is disposed at a portion of the first discharge nozzle 131 that is in front of the base end cylinder portion 121 and behind the branch portion of the second discharge nozzle 132. The valve seat 136 is formed in a cross-sectionally tapered shape so as to extend forward as it goes from the inner peripheral surface of the first discharge nozzle 131 toward the inside in the nozzle diameter direction. The communication hole 135 is disposed coaxially with the nozzle axis O2 at the center of the valve seat 136.

[0060] (Air communication passage) As described above, since the connection cylinder 125 is fitted inside the inner seal cylinder 53, the space formed between the bottom of the air cylinder 32 and the inner seal cylinder 53 and the outer seal cylinder 52 functions as an accommodation space 140 whose communication with the inside of the inner container 3 is restricted through the space between the connection cylinder 125 and the inner seal cylinder 53. Further, an air communication hole 141 penetrating the bottom of the air cylinder 32 vertically is formed at the bottom of the air cylinder 32. From these facts, the accommodation space 140 is a space whose communication with the inside of the inner container 3 is restricted and which communicates only with the air chamber 30 through the air communication hole 141.

[0061] Furthermore, a first air groove 142 communicating with the inside of the accommodation space 140 is formed between the inner peripheral surface of the main body cylinder portion 40 and the outer seal cylinder 52. Further, a second air groove 143 communicating with the first air groove 142 and communicating with the inside of the mounting cap 11 is formed between the lower surface of the flange portion 41 of the main body cylinder portion 40 and the upper surface of the seal ring 51 of the seal body 50.

[0062] In the illustrated example, the first air groove 142 is formed in a vertical groove shape extending along the vertical direction on the inner peripheral surface of the portion of the main body cylinder portion 40 located at the rear side. However, it is not limited to this case, and the first air groove 142 may be formed on the outer peripheral surface of the outer seal cylinder 52 or may be formed on both the outer peripheral surface of the outer seal cylinder 52 and the inner peripheral surface of the main body cylinder portion 40. The second air groove 143 is formed in a transverse groove shape so as to extend along the radial direction on the lower surface of the portion of the flange portion 41 located on the rear side. However, it 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.

[0063] Since it is configured as described above, the air in 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 portion 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 path 12 that communicates the inside of the air chamber 30 and the inside of the air hole 22.

[0064] Furthermore, an air valve is provided in the air communication path 12 that allows the flow of air from the air chamber 30 toward the air hole 22 and restricts the flow of air from the air hole 22 side toward the air chamber 30. Specifically, a ball valve 144 is accommodated in the accommodation space 140 as the air valve.

[0065] The ball valve 144 is, for example, a sphere made of metal or synthetic resin, and is accommodated in the accommodation space 140 so as to be movable up and down. The ball valve 144 is placed on the upper end edges of the inner seal cylinder 53 and the outer seal cylinder 52 during normal times and when the internal pressure of the air chamber 30 rises (see FIG. 4). Thereby, the air communication hole 141 can be opened, and the flow of air from the air chamber 30 toward the air hole 22 can be allowed. On the other hand, when the internal pressure of the air chamber 30 drops, the ball valve 144 moves upward to close the air communication hole 141 from below (see FIG. 3). Thereby, the flow of air from the air hole 22 side toward the air chamber 30 can be restricted, and the ball valve 144 can be made to function as a check valve.

[0066] (Plug body, operating member) Furthermore, the discharge member 9 is provided with a plug body 13 that can openably close the discharge path 120 and regulate the flow of the content W from the inner container 3 toward the discharge port 8, and an operating member 14 that switches the plug body 13 from a closed state closing the discharge path 120 to an open state.

[0067] The plug body 13 is disposed inside the first discharge nozzle 131, and is movable along the nozzle axis O2 between a closed position P1 where it contacts the valve seat 136 to close the communication hole 135 and an open position P2 (see FIG. 3) where it is separated from the valve seat 136 to open the communication hole 135.

[0068] The plug body 13 includes a ball body 150 disposed on the proximal end cylinder portion 121 side with respect to the valve seat 136, and a rod portion 151 extending forward from the ball body 150 along the nozzle axis O2. The ball body 150 is formed in a spherical shape larger than the diameter of the communication hole 135, and closely contacts the valve seat 136 so as to be separable from the rear. Accordingly, the ball body 150 can be brought into contact with the valve seat 136 over the entire circumference in the nozzle circumferential direction, and the communication hole 135 can be closed. The rod portion 151 is disposed coaxially with the nozzle axis O2 in a state of being inserted inside the communication hole 135, and is formed to extend forward from the branch portion of the second discharge nozzle 132.

[0069] The plug body 13 configured as described above is disposed inside the first discharge nozzle 131 so as to be movable along the nozzle axis O2 between the closed position P1 and the open position P2 by the operation of the operating member 14. The closed position P1 is defined as the position where the communication hole 135 is closed when the ball body 150 contacts the valve seat 136 from the rear. The open position P2 is defined as the position where the communication hole 135 is opened when the ball body 150 moves rearward along the nozzle axis O2 and is separated from the valve seat 136.

[0070] 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 configured to move the plug body 13 between a closed position P1 and an open position P2 via the guide member 160.

[0071] The guide member 160 is coaxially disposed with the nozzle axis O2 at a portion of the first discharge nozzle 131 located between the branch portion of the second discharge nozzle 132 and the closing plate 133, and is movably disposed with respect to the first discharge nozzle 131. The guide member 160 is formed in a toped cylindrical shape that opens rearward and is closed forward, and includes a guide body 161 and a sliding cylinder 162 that surrounds the guide body 161 from the outside in the nozzle diameter direction and is slidably fitted to the inner peripheral surface of the first discharge nozzle 131.

[0072] The front end portion of the rod portion 151 is fitted inside the guide body 161. Thereby, the plug body 13 and the guide member 160 are integrally fixed. The sliding cylinder 162 has a lip portion that closely slidably contacts the entire circumference in the nozzle circumferential direction with respect to the inner peripheral surface of the first discharge nozzle 131. Thereby, a predetermined sealing property is ensured between the lip portion and the inner peripheral surface of the first discharge nozzle 131. Therefore, the content W flowing in the discharge path 120 can be guided to the second discharge nozzle 132 side and led to the discharge port 8. Furthermore, the guide member 160 slidably contacts the inner peripheral surface of the first discharge nozzle 131, thereby stably moving the plug body 13 along the nozzle axis O2 while guiding it.

[0073] The operating lever 170 is inserted from above into a cap cylinder 134 formed on the first discharge nozzle 131, is connected to the guide member 160, and is movable with respect to the first discharge nozzle 131. The operation lever 170 is disposed inside the cap cylinder 134, and includes a connecting shaft 171 whose lower end is connected to the guide body 161 so as to be rotatable in the front-rear direction, and a lever main body 172 which is disposed above the cap cylinder 134 and is integrally formed at the upper end of the connecting shaft 171. The lever main body 172 is formed in a solid rod shape with a gradually increasing diameter from bottom to top. Thereby, it is designed to be easy to grip the upper end portion of the lever main body 172 with a fingertip or the like.

[0074] The operation lever 170 configured as described above can be tilted so as to rotate in the front-rear direction with respect to the first discharge nozzle 131 about the connection portion between the connecting shaft 171 and the guide body 161, and the plug body 13 can be moved between the closed position P1 and the open position P2 along with the tilting operation. Note that the rotational movement of the operation lever 170 accompanying the tilting operation is converted into a linear movement that linearly moves the plug body 13 and the guide member 160 along the nozzle axis O2 by an operation cap 180 attached to the cap cylinder 134.

[0075] The operation cap 180 is formed in a toped cylindrical shape and is attached to the cap cylinder 134 by, for example, an undercut fit. An operation hole 181 that penetrates the top wall vertically and through which the connecting shaft 171 is inserted is formed in the top wall of the operation cap 180. The operation hole 181 is formed in an elliptical shape in plan view, in which the major axis along the nozzle axis O2 is larger than the diameter of the connecting shaft 171.

[0076] In particular, when the plug body 13 is located at the closed position P1, the operation hole 181 is formed such that the gap between the inner edge portion 181b located behind the connecting shaft 171 and the connecting shaft 171 is larger than the gap between the inner edge portion 181a located in front of the connecting shaft 171 and the connecting shaft 171 among the inner peripheral edge portions of the operation hole 181. Accordingly, when the operation lever 170 is tilted forward, the connecting shaft 171 can be brought into contact with the inner edge portion 181a of the inner peripheral edge of the operation hole 181, which is located in front of the connecting shaft 171. Using this contact portion as a fulcrum, the guide member 160 can be moved rearward along the nozzle axis O2. As a result, the plug body 13 can be moved from the closed position P1 toward the open position P2.

[0077] Conversely, when the plug body 13 is located at the open position P2 (see FIG. 3), by tilting the operation lever 170 rearward, the connecting shaft 171 can be brought into contact with the inner edge portion 181b of the inner peripheral edge of the operation hole 181, which is located behind the connecting shaft 171. Using this contact portion as a fulcrum, the guide member 160 can be moved forward along the nozzle axis O2. As a result, the plug body 13 can be moved from the open position P2 toward the closed position P1.

[0078] (Function of the discharge container) Next, a case of discharging the content W using the discharge container 1 configured as described above will be described. In the initial state, as shown in FIGS. 1 and 2, the ball valve 144 in the accommodation space 140 is placed on the inner seal cylinder 53 and the outer seal cylinder 52, and the air communication hole 141 is open. Further, the plug body 13 is located at the closed position P1, and the communication hole 135 is closed.

[0079] In such an initial state, when discharging the content W in the inner container 3, the pressing head 90 in the piston operation unit 7 is pressed down with a pressing force greater than the elastic force of the coil spring 100. As a result, while compressing the coil spring 100, the piston unit 6 connected to the pressing head 90 via the connecting member 110 can be pushed in. Therefore, the piston unit 6 can be moved downward with respect to the cylinder unit 5, and the air chamber 30 can be pressurized. As a result, the state in which the ball valve 144 is placed on the inner seal cylinder 53 and the outer seal cylinder 52 is maintained.

[0080] 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 mouth portion 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. Thereby, the pressure between the inner container 3 and the outer container 4 can be increased, and the inner container 3 can be pressurized. At this time, since the discharge path 120 is blocked by the plug body 13 when the plug body 13 is located at the closed position P1, the 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 reduced in volume and deformed due to the pressure increase between the inner container 3 and the outer container 4.

[0081] Furthermore, since the discharge path 120 is blocked by the plug body 13, the content W in the inner container 2 does not reach the discharge port 8. Therefore, the content W cannot be discharged through the discharge port 8 only by performing the pressing-down operation by the piston operation portion 7.

[0082] In addition, when the air chamber 30 is pressurized by the downward movement of the piston portion 6, the valve body 77 of the air introduction valve 76 is maintained in contact with the piston bottom wall 70. Therefore, the air introduction valve 76 is closed, and the air in the air chamber 30 does not flow out through the first air introduction hole 75.

[0083] When discharging the content W from this state, an operation of switching the plug body 13 from the closed state blocking the discharge path 120 to the open state is performed using the operation member 14. Specifically, as shown in FIG. 3, the operation lever 170 is tilted forward, and the guide member 160 and the plug body 13 are moved rearward along the nozzle axis O2. Thereby, the plug body 13 can be moved from the closed position P1 to the open position P2, and the ball body 150 can be separated rearward from the valve seat 136 to open the communication hole 135. Thereby, the discharge path 120 can be switched to the open state.

[0084] By opening the communication hole 135 and switching the inside of the discharge path 120 to an open state, the inside of the inner container 3 can be communicated with the outside through the discharge path 120 and the discharge port 8. Therefore, the content W in the inner container 3 can be discharged to the outside through the discharge path 120 and the discharge port 8. At this time, the inner container 3 can be reduced in volume and deformed (shrunk and deformed) as the content W is discharged. Moreover, since the inner container 3 was maintained in a pressurized state as shown by the arrow in FIG. 3 due to the pressure increase between the inner container 3 and the outer container 4, the volume reduction deformation of the inner container 3 can be promoted as the content W is discharged. Therefore, the content W can be efficiently discharged.

[0085] In addition, since the inner container 3 can be reduced in volume and deformed as the content W is discharged, the pressurized state of the inner container 3 can be released. Further, even if the pressing-down operation of the pressing head 90 is continued, the piston bottom wall 70 contacts the cylinder bottom wall 31 from above, so that the downward movement of the pressing head 90 can be restricted further (see FIG. 4).

[0086] By the way, when the pressing force on the pressing head 90 is released, the pressing head 90 is pushed up by the biasing force (elastic restoring force) of the coil spring 100. Therefore, the piston portion 6 connected to the pressing head 90 via the connecting member 110 can be moved upward with respect to the cylinder portion 5 together with the pressing head 90. Thereby, as shown in FIG. 3, the piston portion 6 can be pulled back to its original state. Therefore, since the volume of the air chamber 30 increases, the internal pressure of the air chamber 30 decreases to a negative pressure.

[0087] As a result, the ball valve 144 in the accommodation space 140 moves upward to close the air communication hole 141 from below. Therefore, it is possible to regulate the reverse flow of the air introduced between the inner container 3 and the outer container 4 toward the air chamber 30 side through the air hole 22 and the air communication path 12. Therefore, it is possible to prevent the air once introduced between the inner container 3 and the outer container 4 from being discharged.

[0088] Therefore, as shown in FIG. 4, with the repeated operation of the piston operation unit 7, air can be further introduced between the inner container 3 and the outer container 4, and the pressure between the inner container 3 and the outer container 4 can be increased again. As a result, the content W can be stably discharged while gradually reducing the volume of the inner container 3 and deforming it.

[0089] When discharging the content W, when the plug body 13 is positioned at the open position P2 and the discharge path 120 is maintained in an open state, the content W in an amount corresponding to the pressurization of the inner container 3 is discharged. Therefore, the content W is not excessively discharged beyond the amount corresponding to the pressurization of the inner container 3. After the content W is discharged by a predetermined amount, when the plug body 13 is moved to the closed position P1 and the discharge path 120 is switched to the closed state again, the content W, as shown in FIG. 1, is not left in the discharge path 120 and is accommodated in the inner container 3.

[0090] On the other hand, for example, when the plug body 13 is moved to the closed position P1 and the discharge path 120 is switched to the closed state during the discharge of the content W, as shown in FIG. 4, the content W remains drawn into the discharge path 120.

[0091] When the internal pressure of the air chamber 30 decreases as the piston portion 6 is pulled back, the valve body 77 of the air introduction valve 76 moves downward and separates from the piston bottom wall 70. In FIG. 3, the state where the valve body 77 is in contact with the piston bottom wall 70 is illustrated. Thereby, the air introduction valve 76 can be opened, and air can be introduced into the air chamber 30 from the outside through the second air introduction hole 113 and the first air introduction hole 75. Thereby, the piston portion 6 can be stably moved upward, and the pressing head 90 can be stably returned to the original state.

[0092] Particularly, according to the discharge container 1 of the present embodiment, after the piston portion 6 is pushed in by the pressing operation of the pressing head 90 in the piston operation unit 7, the content W is discharged by performing two different operations, that is, the plug body 13 is switched from the closed state to the open state by the operation member 14. Therefore, even if the piston operation part 7 is accidentally operated, for example, it is possible to suppress the content W from being discharged. Further, even if the operation member 14 is accidentally operated (the tilting operation of the operation lever 170) before the operation of the piston operation part 7 after the discharge of the content W, since the inner container 3 is not pressurized by the air from the air chamber 30, it is possible to suppress the content W from being discharged.

[0093] From these, according to the discharge container 1 of the present embodiment, it is possible to suppress the unintended discharge of the content W.

[0094] Furthermore, the plug body 13 can be moved from the closed position P1 to the open position P2 by a simple operation (one-touch operation) of simply tilting the operation lever 170 with a fingertip or the like, so that the discharge operation of the content W can be easily performed. In particular, since the operation lever 170 is provided on the discharge nozzle 122 in which the discharge port 8 is formed, the operation lever 170 can be tilted near the discharge port 8, and the discharge operation of the content W is easy to perform. Therefore, for example, various usage methods such as tilting the operation lever 170 while waiting for a cup or the like at the discharge port 8 and pouring the content W into the cup can be performed, and the convenience can be improved.

[0095] Furthermore, according to the discharge container 1 of the present embodiment, when discharging the content W, by positioning the plug body 13 at the open position P2 by tilting the operation lever 170, while reducing the volume and deforming the inner container 3 pressurized by the air introduced between the inner container 3 and the outer container 4, the content W is discharged. Therefore, when the content W is a carbonated beverage, beer, or the like, in addition to the air pressure, the pressure generated by the foaming of the content W itself can be utilized, so that the content W can be discharged more efficiently. Therefore, these carbonated beverages, beer, etc. can be suitably used as the content W. In particular, when beer is adopted as the content W, since the beer can be discharged so as to be poured into a cup or the like by the tilting operation of the operation lever 170, the discharge container 1 of the present embodiment can be used like a beer server.

[0096] As described above, the embodiments of the present invention have been described. However, the present embodiment is presented as an example and is not intended to limit the scope of the invention. The present embodiment can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the gist of the invention. In addition, the modification examples in each embodiment may be appropriately combined. Furthermore, the present embodiment and its modification examples include, for example, those that can be easily assumed by those skilled in the art, those that are substantially the same, and those within an equivalent range.

[0097] For example, in the above embodiment, the operation member 14 including the operation lever 170 capable of tilting operation has been described as an example. However, it is not limited to this case. For example, the plug body 13 may be switched from the closed state to the open state by an operation lever that can slide along the nozzle axis O2.

[0098] Furthermore, although the case where the ball valve 144 provided in the accommodation space 140 is adopted as the air valve that allows the flow of air from the air chamber 30 toward the air hole 22 and restricts the reverse flow has been described as an example, it is not limited to this case. For example, a valve body such as a three-way valve may be adopted as the air valve. In the present embodiment, an elastic member such as a coil spring may be provided between the ball valve 144 and the seal body 50, and the ball valve 144 may be constantly biased upward so as to block the air communication hole 141. In this case, the reverse flow of air toward the air chamber 30 side can be more effectively suppressed. Therefore, it is possible to effectively suppress the discharged air that has once been introduced between the inner container 3 and the outer container 4.

[0099] Furthermore, in the above-described embodiment, the container body is a laminated peelable container in which the inner container is laminated on the inner surface of the outer container in a peelable manner. However, the present invention is not limited to this, and for example, a double container having a gap secured between the inner container and the outer container may be used.

[0100] Furthermore, in the above-described embodiment, the plug body 13 is movably disposed in the discharge path 120 (specifically, inside the first discharge nozzle 131), and the plug body 13 is moved in the discharge path 120 by the operation lever 170 and switched between the closed position P1 and the open position P2 to regulate the flow of the content W. However, the present invention is not limited to this case. For example, a tube body such as a deformable silicone tube that communicates with the inside of the inner container 3 and through which the content W flows may be used as the discharge member, and the plug body may be disposed outside the tube body so as to be able to crush the tube. Then, the plug body may be configured to be switched between a pressing position for crushing the tube body and a releasing position for releasing the crushing by an operating member including an operation lever. Even in this case, by switching the plug body from the above-described releasing position to the pressing position by the operating member, the plug body can be used to deform and crush the tube body, and the inside of the discharge path (inside the tube body) can be blocked. Therefore, the flow of the content toward the discharge port can be regulated, and the same operational effects as those of the above-described embodiment can be achieved.

Explanation of Reference Numerals

[0101] W... Content P1... Closed position P2... Open position 1... Discharge container 2... Container body 3... Inner container 4... Outer container 5... Cylinder part 6... Piston part 7... Piston operation part 8... Discharge port 9... Discharge member 12... Air communication path 13... Plug body 14... Operating member 20... Mouth part of the container body 22…Air holes (air introduction part) 30…Air chamber 120…Discharge path 122…Discharge nozzle (discharge cylinder) 135…Communication hole 136…Valve seat 144…Ball valve (air valve) 170…Operating lever

Claims

1. A container body having an inner container that undergoes volume reduction deformation as the content to be contained decreases, and an outer container in which the inner container is housed, A cylinder portion disposed above the mouth of the container body with the central axis of the container body and the cylinder axis coaxially arranged, and having an air chamber inside, A mounting cylinder portion disposed between the mouth of the container body and the cylinder portion, A piston portion disposed coaxially with the cylinder axis inside the cylinder portion and slidable up and down, A piston operating portion for operating the piston portion, An air valve provided in an air communication passage communicating an air introduction portion inside the space between the inner container and the outer container and the air chamber, allowing the flow of air from the air chamber toward the air introduction portion and restricting the reverse flow, A discharge member having a discharge port for discharging the content and a discharge passage communicating the inside of the discharge port and the inside of the inner container, A plug body that can selectively block the discharge passage and restrict the flow of the content from the inside of the inner container toward the discharge port, An operating member for switching the plug body from a closed state blocking the discharge passage to an open state, The piston operating portion, A middle lid fixed to the upper end portion of the cylinder portion with the cylinder axis coaxially arranged, A push-down head disposed coaxially with the cylinder axis and capable of being pushed down with respect to the cylinder portion and the middle lid, and combined with the piston portion, The discharge member is integrally formed with the lower end portion of the cylinder portion and the mounting cylinder portion, and protrudes laterally of the cylinder portion. A discharge container characterized by this.

2. In the discharge container according to Claim 1, The discharge member includes a discharge cylinder having the discharge passage inside and the discharge port formed therein, In the discharge cylinder, a valve seat having a communication hole communicating the inside of the discharge port and the inside of the inner container is provided, The plug body is disposed in the discharge cylinder so as to be movable between a closed position in contact with the valve seat to block the communication hole and an open position separated from the valve seat to open the communication hole, The operating member is disposed outside the discharge cylinder and provided so as to be movable with respect to the discharge cylinder, and includes an operating lever for moving the plug body between the closed position and the open position. A discharge container.

3. In the discharge container according to Claim 1 or 2, The container body is a biaxially stretched blow molded container. A discharge container.

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