Dispensing container

Abstract

To provide a dispensing container capable of preventing the inside of a bottle from being filled with bubbles even when outside air is supplied into the bottle when the body is restored and deformed after discharging the contents.SOLUTION: Nozzle tube 24 is provided with a discharge passage 31 that connects a discharge hole 22 with the inside of a vertical supply tube 23, and an outside air introduction passage 32 that is arranged parallel to the discharge passage and can connect a second through hole 25d of an opening / closing member 25 with the inside of a bottle 10, and a check valve 33 is provided at the connection between the outside air introduction passage and the inside of the bottle to allow air to flow from the outside air introduction passage into the bottle and to regulate air flow from the inside of the bottle to the outside air introduction passage, and the opening / closing member is arranged to be movable in a forward and backward direction between a standby position in which the boss portion 24a of the nozzle tube is fitted into the first through hole 25a and communication between the second through hole and the outside air introduction passage is blocked, and a forward end position in which the first through hole is moved forward away from the boss portion and the second through hole is connected to the outside air introduction passage.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a dispensing container. [Background technology]

[0002] Conventionally, as shown in Patent Document 1 below, for example, there has been known a dispensing container comprising a bottle having a mouth and a body formed to be elastically deformable, a topped cylindrical attachment tube attached to the mouth, and a nozzle member having a discharge hole for the contents, wherein the nozzle member comprises a vertical supply tube extending downward from the top wall of the attachment tube, and a nozzle tube extending forward from the vertical supply tube and protruding forward from the attachment tube, the front end opening of which serves as a discharge hole, the vertical supply tube being connected to the upper end of a suction pipe whose lower end is located within the bottom of the bottle, and wherein an air passage is provided which connects the inside of the bottle to a portion of the vertical supply tube located above the upper end of the suction pipe. In this dispensing container, when the body is elastically deformed radially inward, the contents in the bottle are supplied through the suction pipe and the air in the bottle through the air passage into the vertical supply tube, where they are mixed, and then the foamed contents are discharged from the discharge hole. After the contents are discharged, when the body is restored to its original shape, outside air is supplied into the bottle through the discharge hole, passing through the nozzle tube and the vertical supply tube in that order. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2000-219254 Summary of the Invention [Problem to be solved by the invention]

[0004] In conventional dispensing containers, after the contents are dispensed, when outside air is supplied into the bottle from the discharge hole, foam inside the nozzle tube etc. is also supplied into the bottle, causing the bottle to fill with foam. At the next dispense, it becomes difficult to supply the contents and air in the specified amounts into the vertical supply tube, and there is a risk that the foam quality of the dispensed contents may deteriorate.

[0005] To provide a dispensing container which can prevent the inside of a bottle from being filled with bubbles even if outside air is supplied into the bottle when the body is restored and deformed after dispensing the contents. [Means for solving the problem]

[0006] A discharge container according to one aspect of the present invention includes a bottle having at least a mouth portion and a body portion formed to be elastically deformable, a topped cylindrical attachment tube attached to the mouth portion, and a nozzle member having a discharge hole for the contents, wherein the nozzle member includes a vertical supply tube extending downward from a top wall of the attachment tube, a nozzle tube extending forward from the vertical supply tube and protruding forward from the attachment tube, and having the discharge hole formed therein, and an opening / closing member exteriorly mounted on the nozzle tube so as to be movable in the front-rear direction, and the vertical supply tube includes a connecting tube portion extending downward. The connecting tube member is connected to an upper end of a suction pipe whose lower end is located inside the bottom of the bottle, and an air passage is provided that communicates between the inside of the bottle and a portion of the vertical supply tube that is located above the upper end of the suction pipe. The front end of the nozzle tube is formed with a boss portion that protrudes forward and a plurality of the discharge holes that are arranged at intervals around the boss portion. The opening and closing member is formed in the shape of a horizontally oriented, topped tube with a closed front end and an open rear end, and the boss portion is detachably attached to the front end wall of the opening and closing member. a first through hole fitted in a peripheral wall of the opening / closing member, a second through hole passing through in the up-down direction at a lower end of the peripheral wall of the opening / closing member, the nozzle cylinder is provided with a discharge passage that communicates the discharge hole with the interior of the vertical supply cylinder, and an outside air introduction passage that is provided in parallel with the discharge passage and that can communicate the second through hole with the interior of the bottle, and a check valve that allows air to flow from the outside air introduction passage into the bottle and restricts air from flowing from the interior of the bottle to the outside air introduction passage is provided at a connecting portion between the outside air introduction passage and the interior of the bottle, and the opening / closing member is provided with a check valve that allows air to flow from the outside air introduction passage into the bottle and restricts air from flowing from the interior of the bottle to the first through hole a waiting position in which the boss portion is fitted within the nozzle cylinder and communication between the second through hole and the outside air introduction path is blocked, and a forward end position in which the first through hole is moved forward from the boss portion and the second through hole is connected to the outside air introduction path, and a sliding cylinder is provided on the outer peripheral surface of a portion of the peripheral wall of the nozzle cylinder that is located rearward of the discharge hole, the sliding cylinder protruding outward in the nozzle radial direction and sliding in the front-rear direction along a portion of the inner peripheral surface of the peripheral wall of the opening / closing member that is located forward of the second through hole as the opening / closing member moves back and forth.

[0007] When the opening / closing member is in the forward end position and the first through hole is open, elastic deformation of the body in a radially inward direction causes the contents in the bottle to pass through the suction pipe and the air in the bottle to pass through the air passage and be supplied into the vertical supply tube, where they are mixed, and then the foamed contents are discharged to the outside from the first through hole through the discharge hole. During this process, a check valve installed at the connection between the outside air inlet passage and the inside of the bottle prevents air inside the bottle from flowing into the outside air inlet passage and being discharged through the second through-hole, allowing the air inside the bottle to smoothly flow into the air passage and mix with the contents, stabilizing the foam quality of the contents discharged to the outside through the first through-hole. When the opening / closing member is in the forward end position, the second through hole of the opening / closing member is connected to the outside air introduction passage, so when the body is restored and deformed after the contents are ejected, outside air enters the outside air introduction passage through the second through hole and is supplied into the bottle. In this case, since the outside air introduction passage is arranged in parallel with the discharge passage, the discharge passage, which is already filled with foam and is prone to foam generation, is avoided and outside air enters the outside air introduction passage through the second through hole in the opening / closing member and is supplied into the bottle, preventing the bottle from becoming filled with foam. When the opening / closing member is in the standby position, the first through hole is blocked and communication between the second through hole and the outside air introduction passage is cut off, thereby preventing external water, etc. from entering the discharge passage and the outside air introduction passage. Since the second through hole is formed at the lower end of the peripheral wall of the opening / closing member, it is difficult for external water, etc. to reach the second through hole, and even when the opening / closing member is positioned in the forward end position, it is possible to prevent external water, etc. from entering the outside air intake passage through the second through hole. A sliding cylinder is provided on the peripheral wall of the nozzle cylinder, and the second through hole is prevented from communicating with the discharge hole and the first through hole within the opening / closing member, so that foamed contents that pass through the discharge hole but do not reach the first through hole and remain within the opening / closing member can be prevented from entering the second through hole and leaking onto the outer surface of the peripheral wall of the opening / closing member.

[0008] In a discharge container according to one aspect of the present invention, the nozzle cylinder includes a base cylinder portion and a main cylinder portion, the base cylinder portion extends forward from the vertical supply cylinder, is formed integrally with the attachment cylinder, and is formed in a cylindrical shape with both front and rear end portions open, the main cylinder portion is formed in a horizontally oriented topped cylinder with a closed front end and an open rear end, and the inside of the main cylinder portion serves as the discharge passage, the front portion of the main cylinder portion protrudes forward from the base cylinder portion, the discharge hole, the boss portion, and the sliding cylinder are formed in the front portion of the main cylinder portion, and the rear portion of the main cylinder portion is fitted into the base cylinder, and the outer peripheral surface of the rear portion of the main cylinder portion and the inner peripheral surface of the base cylinder portion are The outside air introduction passage is provided between the respective lower ends, and two protruding pieces protruding forward are provided at the lower end of the front end opening edge of the base tube portion, spaced apart in the nozzle circumferential direction around the central axis of the nozzle tube, and an outer tube is formed on the outer peripheral surface of the front part of the main body tube portion, extending rearward from the connection part with the sliding tube and fitted onto the front end of the base tube portion, and an introduction hole is formed in the front end of the outer tube, penetrating in the nozzle radial direction and into which the protruding piece is inserted from rear to front, and the surfaces of the two protruding pieces opposite to the surfaces facing each other in the nozzle circumferential direction may abut or be close to the surfaces of the inner surface of the introduction hole that face each other in the nozzle circumferential direction.

[0009] Since the nozzle tube has a base tube portion formed integrally with the mounting tube and a main body tube portion, a nozzle tube having a discharge hole, a boss portion, a sliding tube, a discharge passage, and an outside air introduction passage can be easily formed while preventing the mold structure from becoming complicated. Of the two protrusions formed on the base tube portion, the surfaces opposite to those facing each other in the nozzle circumferential direction are in contact with or close to the surfaces facing each other in the nozzle circumferential direction on the inner surface of the introduction hole formed in the outer tube of the main body tube portion, so the base tube portion and the main body tube portion can be easily assembled by aligning their relative positions in the nozzle circumferential direction. [Effects of the Invention]

[0010] According to the above aspect of the present invention, when the body is deformed to restore its original shape after the contents are discharged, even if outside air is supplied into the bottle, the bottle can be prevented from being filled with foam. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a vertical cross-sectional view of a discharge container according to an embodiment of the present invention. [Figure 2] FIG. 2 is an enlarged view of a portion of FIG. [Figure 3] 2 is a vertical cross-sectional view of the discharge container of FIG. 1 when the opening / closing member is located at the forward end position. FIG. [Figure 4] FIG. 2 is a bottom view of the nozzle cylinder shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, the discharge container 1 of this embodiment includes a bottle 10 and a nozzle member 20.

[0013] The bottle 10 has at least a mouth portion 11 and a body portion formed to be elastically deformable. The mouth portion 11 is formed in a cylindrical shape. A male thread is formed on the outer circumferential surface of the mouth portion 11. The body portion is formed in a cylindrical shape with a bottom that extends in the vertical direction. Hereinafter, in the direction along the central axis O1 of the mouth 11, the side where the mouth 11 is located relative to the body will be referred to as the upper side, the side where the body is located relative to the mouth 11 will be referred to as the lower side, and the direction along the central axis O1 will be referred to as the up-down direction.

[0014] The nozzle member 20 has a cylindrical mounting tube 21 with a top that is mounted on the mouth portion 11, and a discharge hole 22 for the contents.

[0015] The mounting tube 21 is formed in a topped cylindrical shape having a top wall 21a and a peripheral wall 21b, and is threadedly attached to the mouth portion 11. The mounting tube 21 may also be fitted into the mouth portion 11. An internal thread that screws onto the external thread formed on the mouth portion 11 is formed on the inner peripheral surface of the lower portion of the peripheral wall 21b. The top wall 21a is formed with a vertical supply tube 23 that extends downward and whose inside is in communication with the discharge hole 22. When viewed from the top-bottom direction, the central axis O2 of the vertical supply tube 23 is spaced apart from the central axis O1 of the opening 11.

[0016] Hereinafter, when viewed from the top-bottom direction, the side where the central axis O2 of the vertical supply tube 23 is spaced apart from the central axis O1 of the mouth portion 11 will be referred to as the rear side, and the opposite side will be referred to as the front side. Further, the direction intersecting the central axis O2 of the vertical supply cylinder 23 when viewed from the top and bottom is referred to as the radial direction, and the direction going around the central axis O2 when viewed from the top and bottom is referred to as the circumferential direction.

[0017] In the illustrated example, a foaming member 37 is fitted into the vertical supply tube 23. The foaming member 37 is configured by disposing meshes separately on both open edges of the vertically extending tube. The foaming member 37 is divided into two parts, an upper part and a lower part. The foaming member 37 is provided in a part of the vertical supply tube 23 that is located below the connecting part with the rear end of the nozzle tube 24, which will be described later.

[0018] A connecting cylinder member 36 extending downward is connected to the vertical supply cylinder 23. The upper end of a suction pipe 34, the lower end of which is located inside the bottom of the bottle 10, is connected to the connecting cylinder member 36, and an air passage 35 is provided which communicates between the inside of the bottle 10 and a portion of the vertical supply cylinder 23 located above the upper end of the suction pipe 34. The air passage 35 opens into a portion of the vertical supply cylinder 23 located below the foaming member 37. The connecting cylinder member 36 is disposed coaxially with the vertical supply cylinder 23.

[0019] The connecting tubular member 36 includes an outer tube 41 , an inner tube 42 , and a connecting portion 43 .

[0020] The outer cylinder 41 is fitted onto the vertical supply cylinder 23 . The inner tube 42 is fitted into the vertical supply tube 23. The upper end of the inner tube 42 is fitted into the lower end of the vertical supply tube 23 and protrudes downward from the vertical supply tube 23. The upper end of the suction pipe 34 is fitted liquid-tightly into the inner tube 42. A valve seat 42a protrudes radially inward and extends continuously around the entire circumference on a portion of the inner circumferential surface of the inner tube 42 that is located above the upper end of the suction pipe 34. A first check valve 44 is disposed on the upper surface of the valve seat 42a so as to be movable upward. The first check valve 44 is spherical and allows the contents to flow from the suction pipe 34 into the vertical supply tube 23, while restricting the contents from the vertical supply tube 23 from flowing into the suction pipe 34. The connecting portion 43 connects the outer cylinder 41 and the inner cylinder 42 to each other, and supports the lower end opening edge of the vertical supply cylinder 23.

[0021] As shown in Fig. 2, a circumferential groove 45 is formed on the inner peripheral edge of the upper surface of the connecting portion 43, extending continuously around the entire circumference. The connecting portion 43 is formed with first supply holes 46 that penetrate the connecting portion 43 in the up-down direction over the entire radial area. A plurality of first supply holes 46 are provided at intervals in the circumferential direction. When viewed from the up-down direction, the first supply holes 46 have a rectangular shape that is long in the circumferential direction. A second supply hole 47 and a third supply hole 48 are formed in the inner peripheral surface of the vertical supply cylinder 23.

[0022] The second supply hole 47 extends upward from an inner peripheral edge portion of the lower end opening edge of the vertical supply tube 23 that faces the circumferential groove 45 in the up-down direction, and terminates below the upper end opening edge of the inner tube 42. The entire second supply hole 47 is covered from the radially inside by the inner tube 42. The circumferential size of the second supply hole 47 is smaller than the circumferential size of the first supply hole 46. The third supply hole 48 extends upward from the second supply hole 47 and reaches above the upper opening edge of the inner cylinder 42. The upper part of the third supply hole 48, which is located above the upper opening edge of the inner cylinder 42, opens into the vertical supply cylinder 23. The circumferential centers of the third supply holes 48 and the second supply holes 47 are aligned. The circumferential size of the third supply holes 48 is smaller than the circumferential size of the second supply holes 47. The radial size (depth) of the third supply holes 48 is smaller than the radial size of the second supply holes 47. The third supply holes 48 and the second supply holes 47 are provided in equal numbers and spaced apart from each other in the circumferential direction. The third supply holes 48 and the second supply holes 47 are each provided in greater numbers than the first supply holes 46.

[0023] The first supply hole 46, the circumferential groove 45, the second supply hole 47, and the third supply hole 48 constitute an air passage 35 that communicates between the inside of the bottle 10 and a portion of the vertical supply tube 23 that is located above the upper end of the suction pipe 34. Of the first supply hole 46, the second supply hole 47, and the third supply hole 48, the first supply hole 46 has the largest flow path cross-sectional area and the third supply hole 48 has the smallest flow path cross-sectional area. The flow path cross-sectional areas of the first supply hole 46, the second supply hole 47, and the third supply hole 48 are the areas of a cross section along a direction perpendicular to the central axis O2 of the vertical supply tube 23.

[0024] In the illustrated example, the nozzle member 20 further includes a nozzle cylinder 24 and an opening / closing member 25, as shown in FIG.

[0025] The nozzle cylinder 24 protrudes forward from the peripheral wall 21b of the mounting cylinder 21. The nozzle cylinder 24 extends forward from the upper end of the vertical supply cylinder 23. A discharge hole 22 for the content is formed in the nozzle cylinder 24. The nozzle cylinder 24 is formed in the shape of a horizontal, topped cylinder with a closed front end and an open rear end. Hereinafter, the direction intersecting the central axis O3 of the nozzle cylinder 24 as viewed from the front-rear direction will be referred to as the nozzle radial direction, and the direction going around the central axis O3 as viewed from the front-rear direction will be referred to as the nozzle circumferential direction.

[0026] The discharge hole 22 is formed in the front end of the nozzle cylinder 24 and opens forward. A boss portion 24a that protrudes forward is formed in the center of the front end of the nozzle cylinder 24. A plurality of discharge holes 22 are provided at intervals in the nozzle circumferential direction. The discharge holes 22 penetrate the front end of the nozzle cylinder 24 not only in the front-rear direction but also in the nozzle radial direction. The discharge hole 22 is an elongated hole that extends in the front-rear direction.

[0027] The opening / closing member 25 is mounted on the nozzle cylinder 24 so as to be movable in the front-rear direction. The opening / closing member 25 is formed in the shape of a horizontally oriented, topped cylinder with a closed front end and an open rear end. A first through hole 25a is formed in the center of the front end wall of the opening / closing member 25. A boss portion 24a of the nozzle cylinder 24 is detachably fitted into the first through hole 25a. As the opening / closing member 25 moves back and forth, the boss portion 24a is attached to and detached from the first through hole 25a, thereby switching between communication between the discharge hole 22 and the outside through the first through hole 25a and blocking this communication. A first restricting protrusion 25b is provided on the front end wall of the opening / closing member 25, protruding rearward and inserted into the discharge hole 22 to restrict relative rotation between the opening / closing member 25 and the nozzle cylinder 24. A plurality of first restricting protrusions 25b are provided at intervals around the nozzle circumference, and are inserted into each of the plurality of discharge holes 22. A groove 25c extending in the front-rear direction is formed on the inner peripheral surface of the rear end of the opening / closing member 25, and a second restricting protrusion 24c accommodated in the groove 25c so as to be movable back and forth is formed on the outer peripheral surface of the nozzle cylinder 24. The second restricting protrusion 24c abuts against the inner surface of the groove 25c of the opening / closing member 25 in the nozzle circumferential direction, thereby restricting relative rotation between the opening / closing member 25 and the nozzle cylinder 24.

[0028] As shown in Figure 3, the opening / closing member 25 and the nozzle cylinder 24 are each provided with a first regulating portion 26 and a second regulating portion 27 that engage with each other when the opening / closing member 25 reaches the forward end position, thereby regulating further forward movement of the opening / closing member 25. The first restricting portion 26 protrudes outward in the nozzle radial direction from the outer peripheral surface of the nozzle cylinder 24 and extends continuously over the entire length in the nozzle circumferential direction. The second restricting portion 27 protrudes inward in the nozzle radial direction from the peripheral wall of the opening / closing member 25 and extends continuously over the entire length in the nozzle circumferential direction. The second restricting portion 27 is located rearward of the first restricting portion 26 and faces the first restricting portion 26 in the front-rear direction. The first restricting portion 26 and the second restricting portion 27 are located rearward of the second restricting protrusion 24c.

[0029] A second through-hole 25d is formed in the lower end of the peripheral wall of the opening / closing member 25, penetrating in the up-down direction. A sliding cylinder 24b is provided on the outer peripheral surface of a portion of the peripheral wall of the nozzle cylinder 24 that is located rearward of the discharge hole 22. The sliding cylinder 24b protrudes outward in the nozzle radial direction and slides in the front-to-rear direction on a portion of the inner peripheral surface of the peripheral wall of the open-close member 25 that is located forward of the second through-hole 25d as the open-close member 25 moves forward and backward. The sliding cylinder 24b extends forward from the connection portion with the peripheral wall of the nozzle cylinder 24. The sliding cylinder 24b is in liquid-tight contact with the inner peripheral surface of the peripheral wall of the open-close member 25 over its entire circumference.

[0030] The nozzle tube 24 is provided with a discharge passage 31 that connects the discharge hole 22 to the inside of the vertical supply tube 23, and an outside air introduction passage 32 that is arranged parallel to the discharge passage 31 and can connect the second through hole 25d to the inside of the bottle 10. The discharge passage 31 and the outside air introduction passage 32 extend in the front-rear direction. The discharge passage 31 is disposed coaxially with the central axis O3 of the nozzle cylinder 24. The outside air introduction passage 32 is formed in a portion of the nozzle cylinder 24 that is located below the outer periphery of the discharge passage 31.

[0031] The opening / closing member 25 is movable in the front-to-rear direction between a standby position as shown in FIG. 1 in which the boss portion 24a is fitted into the first through-hole 25a and communication between the second through-hole 25d and the outside air introduction path 32 is blocked, and a forward end position as shown in FIG. 3 in which the first through-hole 25a is separated forward from the boss portion 24a and the second through-hole 25d is connected to the outside air introduction path 32.

[0032] A second check valve (check valve) 33 is provided at the connection between the outside air introduction path 32 and the inside of the bottle 10, which allows air to flow from the outside air introduction path 32 into the bottle 10 and regulates the flow of air from the inside of the bottle 10 into the outside air introduction path 32. Here, the nozzle cylinder 24 is formed with a valve cylinder 38 that extends downward from the rear end of the outside air introduction passage 32 and communicates between the outside air introduction passage 32 and the inside of the bottle 10. A second check valve 33 is housed within the valve cylinder 38 so that it can move up and down. The second check valve 33 is spherical. The inner peripheral surface of the valve cylinder 38 is provided with multiple support protrusions 33a spaced apart in the circumferential direction, and the second check valve 33 is disposed on the multiple support protrusions 33a, communicating between the outside air introduction passage 32 and the inside of the bottle 10 through the valve cylinder 38. When the internal pressure of the bottle 10 increases, the second check valve 33 moves upward and airtightly abuts against the periphery (valve seat) of the upper end opening on the inner surface of the valve cylinder 38 over its entire circumference, thereby blocking communication between the outside air introduction passage 32 and the inside of the bottle 10 through the valve cylinder 38.

[0033] In the illustrated example, the nozzle cylinder 24 includes a base cylinder portion 28 and a main cylinder portion 29 . The base tube portion 28 extends forward from the upper end of the vertical supply tube 23 and is formed integrally with the mounting tube 21. The front end of the base tube portion 28 protrudes forward from the peripheral wall 21b of the mounting tube 21. A first restricting portion 26 is formed at the front end of the base tube portion 28. The base tube portion 28 is formed in a cylindrical shape with both ends in the front-rear direction open. The main body tubular portion 29 is formed in a horizontally oriented, topped cylinder shape with a closed front end and an open rear end, and is fixed to the base tubular portion 28. A discharge passage 31 is formed inside the main body tubular portion 29. The front portion of the main body tubular portion 29 protrudes forward from the base tubular portion 28. The discharge hole 22, a boss portion 24a, and a sliding cylinder 24b are formed in the front portion of the main body tubular portion 29. The rear portion of the main body tubular portion 29 is fitted into the base tubular portion 28. An outside air introduction passage 32 is provided between the lower ends of the outer peripheral surface of the rear portion of the main body tubular portion 29 and the inner peripheral surface of the base tubular portion 28.

[0034] 4, two protruding pieces 28a protruding forward are provided at a distance in the circumferential direction of the nozzle at the lower end of the front opening edge of the base tubular portion 28. The protruding pieces 28a are formed in the shape of a plate with the front and back surfaces facing up and down. An outer circumferential surface of the front portion of the main body tubular portion 29 is formed with an outer circumferential tube 29a, which extends rearward from the connection portion with the sliding tube 24b and is fitted onto the front end portion of the base tubular portion 28. A second restricting protrusion 24c is formed on the outer circumferential surface of the rear end portion of the outer circumferential tube 29a. An introduction hole 29b that penetrates in the nozzle radial direction is formed at the lower end portion of the front end portion of the outer circumferential tube 29a. A protrusion 28a of the base tubular portion 28 is inserted into the introduction hole 29b from rear to front. Of the two protrusions 28a, the surfaces opposite to those that face each other in the nozzle circumferential direction are in contact with or close to the surfaces of the inner surface of the introduction hole 29b that face each other in the nozzle circumferential direction.

[0035] 1, the introduction hole 29b is located forward of the second through hole 25d of the opening / closing member 25. A seal portion extending continuously around the entire circumference is provided between the inner circumferential surface of the opening / closing member 25 and the outer circumferential surface of the outer tube 29a, in a portion located rearward of the introduction hole 29b and forward of the second through hole 25d. The seal portion blocks communication between the introduction hole 29b and the second through hole 25d.

[0036] When the opening / closing member 25 is moved from the standby position shown in FIG. 1 to the forward end position shown in FIG. 3, the first through hole 25a moves forward away from the boss portion 24a, and the second through hole 25d of the opening / closing member 25 faces the introduction hole 29b in the vertical direction, so that the second through hole 25d communicates with the outside air introduction path 32 through the introduction hole 29b. When the body of bottle 10 is pressed radially inward, the pressure inside bottle 10 increases, causing first check valve 44 to move upward away from the upper surface of valve seat 42a, and the contents inside bottle 10 to flow into vertical supply cylinder 23 through suction pipe 34. At this time, the pressure inside bottle 10 increases, causing second check valve 33 to move upward and abut airtightly over the entire circumference against the periphery of the upper end opening on the inner surface of valve cylinder 38, thereby blocking communication between outside air introduction path 32 through valve cylinder 38 and the inside of bottle 10, while allowing air inside bottle 10 to flow into air passage 35. As described above, the contents of the bottle 10 are supplied through the suction pipe 34 to the gas-liquid mixing chamber 23a, which is located below the foaming member 37 and above the upper end of the suction pipe 34 within the vertical supply tube 23, and the air within the bottle 10 is supplied through the air passage 35. As a result, a mixture of the contents and air is produced in the gas-liquid mixing chamber 23a, and this gas-liquid mixture passes through the foaming member 37, the discharge passage 31, the discharge hole 22, the inside of the opening / closing member 25, and the first through-hole 25a in this order before being discharged to the outside. The gas-liquid mixture becomes foam in the gas-liquid mixing chamber 23a, and the foam quality is adjusted by passing through the foaming member 37.

[0037] When the body of bottle 10 is restored and deformed radially outward, the pressure inside bottle 10 drops and outside air is supplied into bottle 10 through second through-hole 25d, introduction hole 29b, outside air introduction path 32, and valve cylinder 38. At this time, spherical second check valve 33 is disposed on multiple support protrusions 33a, communicating outside air introduction path 32 with the inside of bottle 10 through valve cylinder 38.

[0038] As described above, according to the discharge container 1 of this embodiment, in the process of discharging the foamed contents to the outside through the first through hole 25a via the discharge hole 22, the second check valve 33 provided at the connection between the outside air introduction path 32 and the inside of the bottle 10 prevents the air inside the bottle 10 from flowing into the outside air introduction path 32 and being discharged through the second through hole 25d, allowing the air inside the bottle 10 to smoothly flow into the air passage 35 and mix with the contents, thereby stabilizing the foam quality of the contents discharged to the outside through the first through hole 25a.

[0039] Since the outside air introduction path 32 is provided in parallel with the discharge passage 31, when the body is restored and deformed after the contents are discharged, outside air enters the outside air introduction path 32 through the second through-hole 25d of the opening / closing member 25 and is supplied into the bottle 10, bypassing the discharge passage 31 which is already filled with foam and is prone to foam generation, and thus preventing the bottle 10 from being filled with foam.

[0040] When the opening / closing member 25 is in the standby position, the first through hole 25a is blocked and communication between the second through hole 25d and the outside air introduction path 32 is cut off, thereby preventing external water, etc. from entering the discharge passage 31 and the outside air introduction path 32. Since the second through hole 25d is formed at the lower end of the peripheral wall of the opening / closing member 25, it is difficult for external water, etc. to reach the second through hole 25d, and even when the opening / closing member 25 is positioned in the forward end position, it is possible to prevent external water, etc. from entering the outside air introduction passage 32 through the second through hole 25d.

[0041] A sliding tube 24b is provided on the peripheral wall of the nozzle tube 24, and the second through hole 25d is prevented from communicating with the discharge hole 22 and the first through hole 25a within the opening / closing member 25. This prevents the foamed contents that have passed through the discharge hole 22 but have not reached the first through hole 25a and remain within the opening / closing member 25 from entering the second through hole 25d and leaking onto the outer surface of the peripheral wall of the opening / closing member 25.

[0042] Since the nozzle tube 24 has a base tube portion 28 formed integrally with the mounting tube 21 and a main body tube portion 29, the nozzle tube 24 having the discharge hole 22, boss portion 24a, sliding tube 24b, discharge passage 31, and outside air introduction passage 32 can be easily formed without complicating the mold structure. Of the two protrusions 28a formed on the base tube portion 28, the surfaces opposite to those facing each other in the nozzle circumferential direction are in contact with or close to the surfaces facing each other in the nozzle circumferential direction on the inner surface of the introduction hole 29b formed in the outer tube 29a of the main body tube portion 29, so that the base tube portion 28 and the main body tube portion 29 can be easily assembled by adjusting their relative positions in the nozzle circumferential direction.

[0043] The technical scope of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

[0044] For example, the numbers of first supply holes 46, second supply holes 47, and third supply holes 48 may be the same. The air passage 35 does not have to have the circumferential groove 45 . The nozzle cylinder 24 may have a configuration in which the base cylinder portion 28 and the main body cylinder portion 29 are integrally formed.

[0045] In addition, within the scope of the spirit of the present invention, the components in the above-described embodiments may be replaced with well-known components as appropriate, and the above-described embodiments and variations may be combined as appropriate. [Explanation of symbols]

[0046] 1 Discharge container 10 bottles 11 Mouth 20 Nozzle member 21 Mounting tube 21a Top wall 22 Discharge hole 23 Vertical supply tube 24 nozzle cylinder 24a boss section 24b Sliding tube 25 Opening and closing member 25a 1st through hole 25d 2nd through hole 28 Base tube part 28a Projection piece 29 Main body cylinder 29a Exterior tube 29b Introduction hole 31 Discharge passage 32 Outside air intake 33 Second check valve (check valve) 34 Suction pipe 35 Air passage 36 Connecting tube member O3 Central axis of nozzle cylinder

Claims

1. a bottle having at least a mouth portion and a body portion formed to be elastically deformable; a topped cylindrical attachment tube that is attached to the mouth portion, and a nozzle member that has a discharge hole for the contents, The nozzle member is a vertical supply tube extending downward from the top wall of the mounting tube; a nozzle cylinder extending forward from the vertical supply cylinder and protruding forward from the mounting cylinder, the nozzle cylinder having the discharge hole formed therein; an opening / closing member mounted on the nozzle cylinder so as to be movable in the front-rear direction, A connecting tube member extending downward is connected to the vertical supply tube, an upper end of a suction pipe whose lower end is located within the bottom of the bottle is connected to the connecting tube member, and an air passage is provided which communicates between the inside of the bottle and a portion of the vertical supply tube which is located above the upper end of the suction pipe; At the front end of the nozzle cylinder, A boss portion protruding forward; a plurality of discharge holes arranged at intervals around the boss portion; The opening / closing member is formed in a horizontally facing, topped cylindrical shape with a closed front end and an open rear end, a first through-hole into which the boss portion is detachably fitted is formed in a front end wall of the opening / closing member; a second through-hole extending vertically through a lower end of the peripheral wall of the opening / closing member; The nozzle cylinder has a discharge passage communicating the discharge hole with the inside of the vertical supply cylinder; an outside air introduction passage that is provided in parallel with the discharge passage and that can communicate between the second through hole and the inside of the bottle, a check valve is provided at a connection between the outside air introduction path and the inside of the bottle, which allows air to flow from the outside air introduction path into the bottle and restricts air from flowing from the inside of the bottle into the outside air introduction path; The opening and closing member is a standby position in which the boss portion is fitted into the first through-hole and communication between the second through-hole and the outside air introduction path is blocked; a forward end position where the first through-hole is separated forward from the boss portion and the second through-hole is communicated with the outside air introduction passage, and A sliding cylinder is provided on the outer peripheral surface of a portion of the peripheral wall of the nozzle cylinder that is located rearward of the discharge hole, and protrudes outward in the nozzle radial direction, and slides in the front-to-back direction on a portion of the inner peripheral surface of the peripheral wall of the opening / closing member that is located forward of the second through hole as the opening / closing member moves back and forth.

2. The nozzle cylinder includes a base cylinder portion and a main body cylinder portion, The base tube portion extends forward from the vertical supply tube, is formed integrally with the mounting tube, and is formed in a tubular shape with both ends in the front-rear direction being open, the cylindrical main body portion is formed in a horizontally facing, topped cylindrical shape with a closed front end and an open rear end, and the inside of the cylindrical main body portion serves as the discharge passage, a front portion of the main body cylindrical portion protrudes forward from the base cylindrical portion, and the discharge hole, the boss portion, and the sliding cylinder are formed in the front portion of the main body cylindrical portion; a rear portion of the main body tubular portion is fitted into the base tubular portion, and the outside air introduction passage is provided between lower ends of an outer peripheral surface of the rear portion of the main body tubular portion and an inner peripheral surface of the base tubular portion, two protruding pieces protruding forward are provided at a lower end of a front opening edge of the base tube portion, spaced apart in a circumferential direction of the nozzle around the central axis of the nozzle tube; an outer circumferential surface of the front portion of the main body tube portion is formed with an outer casing tube that extends rearward from a connection portion with the sliding tube and is fitted onto the front end portion of the base tube portion; An introduction hole is formed at the front end of the outer tube, the introduction hole penetrating the nozzle radial direction and into which the protruding piece is inserted from rear to front, The discharge container according to claim 1, wherein the surfaces of the two protrusions opposite to the surfaces facing each other in the circumferential direction of the nozzle abut or are close to the surfaces of the inner surface of the introduction hole facing each other in the circumferential direction of the nozzle.

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