Discharger

Abstract

To reduce use of a metallic material.SOLUTION: There is provided a discharger 1 comprising: a tank part 10 having a storage chamber 11 therein; an operation member 12 for pressurizing or depressurizing an inside of the storage chamber; a nozzle cylinder part 14 provided with a nozzle port 13; a suction valve 17 for opening a valve when the storage chamber is de-pressurized; and a discharge valve 18 for opening a valve when the storage chamber is pressurized. The tank part comprises a tank part body 30 provided with elastically deformable side wall part 51 and top wall part 54. A discharge member 170 comprising: a first cylinder 180 having a first space R1 therein, that is communicated with an inside of a container body and that extends upward; and a second discharge cylinder 190 having a second space R2 divided from the first space therein, that is communicated with an inside of the nozzle cylinder part and that extends toward an upper portion than the first discharge cylinder is combined into the tank part body. The first space is communicated with the second space through an upper space R3 located at an upper portion than the second discharge cylinder, out of an internal space of the storage chamber.SELECTED DRAWING: Figure 1

Description

[Technical Field]

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

[0002] Conventionally, as shown in Patent Document 1 below, for example, there has been known a dispenser (quantity dispenser) that includes a cylinder portion arranged above the mouth portion of a container body in which the contents are accommodated, a piston operating portion that operates a piston portion that is slidably arranged within the cylinder portion, a suction valve that opens in response to a pull-back operation of the piston portion to suck the contents from within the container body into a liquid chamber in the cylinder portion, and a nozzle tube portion that is connected to the liquid chamber.

[0003] The nozzle tube has a discharge port for discharging the contents and is formed to protrude toward the side of the cylinder. A discharge valve is provided inside the nozzle tube to allow the contents to flow from the liquid chamber to the discharge port and to regulate the flow of the contents from the discharge port into the liquid chamber. The discharge valve is a check valve that opens in response to the pushing action (downward movement) of the piston.

[0004] To dispense the contents using this dispenser, the piston operating member is pressed down to move the piston downward relative to the cylinder, increasing the internal pressure of the liquid chamber. This causes the elastic valve of the discharge valve to elastically deform and open while the suction valve is closed. As a result, the downward movement of the piston allows the contents in the liquid chamber to be dispensed to the outside through the discharge port. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 2019-64688 Summary of the Invention [Problem to be solved by the invention]

[0006] However, in conventional dispensers, there is a demand to reduce the amount of metal material used as much as possible, for example, to address environmental impact. However, in many dispensers such as those described above, a metal coil spring is provided to properly restore the piston upward after being depressed. This makes it difficult to sufficiently reduce the amount of metal material used in the dispenser.

[0007] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a dispenser that can reduce the use of metal materials. [Means for solving the problem]

[0008] (1) A dispenser according to the present invention comprises a topped cylindrical tank section disposed above the mouth of a container body in which the contents are stored and having a storage chamber therein for temporarily storing the contents; an operating member for pressurizing and depressurizing the storage chamber; a nozzle tube section having a nozzle opening for discharging the contents, protruding toward the side of the tank section and communicating with the storage chamber; a suction valve provided in the nozzle tube section for switching between communication and blocking between the inside of the container body and the storage chamber in accordance with changes in the internal pressure of the storage chamber and for opening when the inside of the storage chamber is depressurized; and a discharge valve that opens when pressurized, wherein the tank portion comprises a tank portion main body having a cylindrical side wall portion formed to be elastically deformable and a top wall portion that closes the upper end opening of the side wall portion, and the inside of the tank portion main body is combined with a discharge member having a first discharge tube that extends upward and has a first space therein that is connected to the inside of the container main body, and a second discharge tube that extends upward beyond the first discharge tube, is connected to the inside of the nozzle tube portion, and has a second space therein that is partitioned from the first space, and the first space is connected to the second space through an upper space that is located above the second discharge tube within the internal space of the storage chamber.

[0009] According to the dispenser of the present invention, by using the operating member to tilt the tank, for example, the side wall of the tank body is elastically deformed and the entire tank is pulled down in a vertically crushed manner. This allows the storage chamber of the tank to be pressurized, and the discharge valve to be opened with the suction valve closed. As a result, the contents temporarily stored in the storage chamber can be discharged to the outside from the nozzle opening through the nozzle tube. After the contents are discharged, when the tilting operation of the tank section using the operating member is released, the side wall section returns to its original shape, and the entire tank section returns to its original state. This reduces the pressure inside the storage chamber as the tank section returns to its original shape, allowing the suction valve to be opened with the discharge valve closed. This allows the contents inside the container body to flow into the storage chamber and be temporarily stored there, preparing for the next discharge operation.

[0010] In particular, since there is no need to provide the cylinder, piston, metal coil spring, etc. that were conventionally used, the amount of metal material used can be reduced. Furthermore, unlike a configuration in which a piston, etc. is provided inside the tank, there is no need to provide a member that slides against the inner circumferential surface of the side wall of the tank. Therefore, even contents containing solid matter such as abrasives can be appropriately dispensed. Therefore, a variety of contents can be used, making it an easy-to-use dispenser.

[0011] Furthermore, the dispenser can stably dispense a fixed amount of contents each time the operating member is operated. Specifically, when the dispenser is first used, the tank is empty, so the operating member must be operated multiple times (priming operation) to draw up and store the contents from the container body into the storage chamber of the tank. In this case, since the discharge member is combined with the tank body, in the initial stage of the priming operation, the contents can be drawn up into the first space of the first discharge tube while air in the storage chamber is discharged from the second space through the nozzle tube to the outside. At this time, the second discharge tube, which is connected to the nozzle tube, protrudes upward beyond the first discharge tube, so the contents can be drawn up into the first space until they reach the upper open end of the second discharge tube. Then, with subsequent priming operations, the contents drawn up into the first space can be moved through the upper space to the second space of the second discharge tube. This completes priming and prepares the dispenser for dispensing.

[0012] In particular, since the contents can be sucked up until they reach the upper open end of the second discharge tube, the contents can be stored in the storage chamber while most of the air inside the storage chamber is discharged to the outside. In other words, since the contents cannot be discharged unless the contents are sucked up to a certain height, most of the air inside the storage chamber can be discharged, and therefore a large amount of contents can be stored in the storage chamber. Therefore, when discharging the contents, the contents can be efficiently pushed out by pressurizing the storage chamber, and a fixed amount of the contents can be stably discharged to the outside. Furthermore, even if the operating speed of the operating member, for example, the tilting speed of the tank section, is changed, the amount of air in the storage chamber is small, so the contents can be stably pushed out by pressurization. Therefore, stable dispensing performance can be maintained.

[0013] (2) The tank body comprises a lower tank part that is removably attached to the mouth of the container body, and a topped cylindrical upper tank part that has the side wall part and the top wall part and is removably attached to the lower tank part, the discharge member is integrally combined with the upper tank part and is removably combined with the lower tank part, the suction valve is provided in the first discharge tube, and a recovery hole that penetrates the first discharge tube radially is formed in the first discharge tube, and the recovery hole is closed by the lower tank part when the upper tank part is attached to the lower tank part, and may open when the upper tank part is removed from the lower tank part.

[0014] In this case, after the contents in the container body have been discharged, when the dispenser is replaced with a new container body, the contents remaining in the storage chamber (e.g., residual liquid) can be easily recovered into the container body. Specifically, the upper tank part is removed from the lower tank part before removing the lower tank part from the opening of the container body. This allows the discharge member and suction valve to be removed along with the upper tank part, and also opens the recovery hole that was previously blocked by the lower tank part. This allows the contents remaining in the second discharge tube to be recovered into the container body, and the contents remaining in the first discharge tube can also be recovered into the container body through the recovery hole. Therefore, it is possible to prevent the remaining contents from scattering around, and it is easy to prevent inconveniences such as staining the fingertips or surrounding area.

[0015] (3) In a plan view seen from a direction along the central axis of the tank section, the opening area at the upper opening end of the second discharge tube may be smaller than the remaining area of the cross-sectional area within the tank section excluding the opening area.

[0016] In this case, the opening area of the second discharge tube is smaller than the remaining cross-sectional area of the tank, so when discharging the contents, the contents in the second space can be pushed out more efficiently by pressurizing the storage chamber through operation of the operating member, making it possible to discharge the contents more remarkably.

[0017] (4) The tank portion has an elastic membrane integrally molded with the side wall portion so as to surround the side wall portion from the radial outside, and the side wall portion has a through hole formed therein that penetrates the side wall portion radially and extends circumferentially around the central axis of the tank portion, and the portion of the side wall portion that is connected circumferentially to the through hole functions as an elastically deformable support wall that extends up and down over the entire length of the side wall portion, and the elastic membrane covers the opening opened by the through hole from the outside, and the second discharge tube may be arranged radially inside the support wall.

[0018] In this case, the operating member can be used to tilt the entire tank unit toward the elastic membrane. This allows the tank unit to be tilted while elastically deforming the support wall, and vertical compression force can be applied while bending the elastic membrane covering the opening of the through-hole. Therefore, the tank unit can be pulled down so as to compress the opening of the through-hole in the vertical direction while bending and deforming the elastic membrane so that it protrudes toward the inside of the tank unit. This allows for more efficient pressurization of the storage chamber of the tank unit. In particular, because the second discharge tube is located radially inside the support wall, the entire tank unit can be tilted toward the elastic membrane without being affected by the second discharge tube, and the pressurization of the storage chamber can efficiently push out the contents of the second space. [Effects of the Invention]

[0019] The dispenser according to the present invention can reduce the use of metal materials and can be an easy-to-use dispenser capable of dispensing a variety of contents, including contents containing solids such as abrasives. Furthermore, the priming operation can suck up and store a large amount of contents while discharging a large amount of air from the storage chamber of the tank, and the dispenser can responsively and stably dispense a fixed amount of contents to the outside by operating the operating member. [Brief explanation of the drawings]

[0020] [Figure 1] 1 is a vertical cross-sectional view showing a first embodiment of a dispenser according to the present invention. [Figure 2] 2 is a vertical cross-sectional view of the dispenser showing a state in which the lever portion shown in FIG. 1 is tilted forward to dispense the contents. FIG. [Figure 3] FIG. 2 is a top view of the discharge member shown in FIG. [Figure 4] FIG. 4 is a vertical cross-sectional view showing a second embodiment of a dispenser according to the present invention. [Figure 5] 5 is a vertical cross-sectional view showing a state in which the upper tank portion shown in FIG. 4 is removed from the lower tank portion. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0021] (First embodiment) A first embodiment of a dispenser according to the present invention will be described below with reference to the drawings. 1 and 2, a dispenser 1 of this embodiment is used by being attached to a mouth portion 3 of a container body 2 that contains contents W. Note that the contents W are not shown in FIG. The contents W are not particularly limited, but examples thereof include liquids with relatively low viscosity such as liquid beverages such as water or alcoholic beverages, or liquids containing solids such as abrasives, etc. However, the contents W are not limited to liquids.

[0022] The dispenser 1 comprises a cylindrical tank portion 10 having a liquid chamber (storage chamber according to the present invention) 11 therein for temporarily storing the contents W, an operating member 12 for pressurizing and depressurizing the liquid chamber 11, a nozzle tube portion 14 having a nozzle opening 13 for discharging the contents W and protruding toward the side of the tank portion 10, an attachment tube portion 15 arranged between the opening 3 of the container body 2 and the tank portion 10, a suction valve 17 that opens when the pressure inside the liquid chamber 11 is reduced, and a discharge valve 18 that opens when the internal pressure of the liquid chamber 11 is increased. Unless otherwise specified, each component part of the dispenser 1 is a molded product made of synthetic resin.

[0023] In this embodiment, the central axis of the tank portion 10 is referred to as the container axis O1, the tank portion 10 side along the container axis O1 is referred to as the upper side, and the container body 2 side along the container axis O1 is referred to as the lower side. Furthermore, in a plan view seen from the direction of the container axis O1, the direction intersecting the container axis O1 is referred to as the radial direction, and the direction going around the container axis O1 is referred to as the circumferential direction. Furthermore, within the radial direction, the direction in which the nozzle tube portion 14 protrudes from the tank portion 10 is referred to as the forward direction, and the opposite side is referred to as the rearward direction.

[0024] (Container body) The container body 2 may be, for example, a glass bottle, a synthetic resin bottle including a PET bottle with a large capacity such as 4 liters, or the like, but is not particularly limited thereto. In the illustrated example, the container body 2 has a relatively large diameter of the mouth portion 3. A male screw portion 20 is formed on the outer circumferential surface of the mouth portion 3 of the container body 2.

[0025] A support member 21 is disposed coaxially with the container axis O1 inside the mouth portion 3 of the container body 2. The support member 21 includes a cylindrical support tube 22 and an annular flange piece 23 that protrudes radially outward from the support tube 22. The support tube 22 is arranged so that its lower end fits into the mouth 3 of the container body 2 and its upper end protrudes above the mouth 3 of the container body 2. The flange piece 23 is arranged on the upper opening edge of the mouth 3 of the container body 2. As a result, the support member 21 is arranged inside the mouth 3 of the container body 2 while being positioned in the vertical direction.

[0026] (Tank section 10) The tank portion 10 is disposed above the mouth portion 3 of the container body 2. The tank 10 includes a tank body 30 and an elastic membrane 40 that covers the entire side wall 51 (described later) of the tank body 30 from the outside in the radial direction.

[0027] (Tank body) The tank body 30 includes an upper tank 50 formed in a cylindrical shape with a top, and a lower tank 60 formed in a cylindrical shape with a bottom and assembled to the upper tank 50 from below. The internal space surrounded by the upper tank 50 and the lower tank 60 forms a liquid chamber 11 that temporarily stores the contents W. The lower tank 60 is removably attached to the mouth 3 of the container body 2 via an attachment cylindrical part 15. The upper tank 50 is removably attached to the lower tank 60. Therefore, the entire dispenser 1 can be attached to the mouth 3 of the container body 2. Furthermore, the tank 10 can be disassembled into an upper tank 50 side and a lower tank 60 side.

[0028] The upper tank portion 50 is formed in a topped cylindrical shape having a cylindrical side wall portion 51, an annular flange portion 52 protruding radially outward from the lower end of the side wall portion 51, a cylindrical outer connecting cylindrical portion 53 protruding downward from the outer peripheral edge of the flange portion 52, and a top wall portion 54 closing the upper end opening of the side wall portion 51. The lower tank portion 60 is formed in a bottomed cylindrical shape, and includes an inner connecting cylindrical portion 61 arranged inside the outer connecting cylindrical portion 53 of the upper tank portion 50, and a bottom wall portion 62 that closes the lower end opening of the inner connecting cylindrical portion 61.

[0029] The outer connecting tubular portion 53 surrounds the inner connecting tubular portion 61 from the outside in the radial direction. The outer connecting tubular portion 53 and the inner connecting tubular portion 61 are connected to each other by screw connection. As a result, the upper tank portion 50 and the lower tank portion 60 are firmly and detachably combined with each other. The method of connecting the outer connecting tubular portion 53 and the inner connecting tubular portion 61 is not limited to screw connection, and they may be fitted together by, for example, undercut fitting.

[0030] The flange 52 is formed with a seal tube 55 that protrudes downward and fits tightly inside the inner connecting tube 61. This allows the upper tank 50 and the lower tank 60 to be combined in a state where a certain level of sealing is ensured.

[0031] The top wall 54 of the upper tank 50 is formed so as to be inclined with respect to the container axis O1. However, this is not limited to this, and the top wall 54 may be formed flat so as to be perpendicular to the container axis O1. In the illustrated example, the top wall 54 is inclined rearward so that the front portion of the top wall 54 is higher than the rear portion.

[0032] An upwardly protruding annular connecting protrusion 56 is formed on the upper surface of top wall portion 54. Connecting protrusion 56 is located radially inward from the outer circumferential edge of top wall portion 54 and is formed to extend continuously in the circumferential direction along the outer circumferential edge. Furthermore, an upwardly protruding central connecting tube 57 is formed coaxially with container axis O1 in the center of the upper surface of top wall portion 54.

[0033] A lever portion 80 is combined with the upper surface of the top wall portion 54 via a relay member 70 . The relay member 70 comprises a ceiling wall portion 71 arranged above the top wall portion 54, an outer mounting tube 72 protruding downward from the outer peripheral edge of the ceiling wall portion 71 and surrounding the connecting protrusion 56 from the radial outside, and an inner mounting tube 73 protruding downward from the ceiling wall portion 71 and surrounding the central connecting tube 57 from the radial outside.

[0034] The top wall 71 is flat and perpendicular to the container axis O1, and is circular in plan view. The outer mounting tube 72 is undercut-fitted to the connecting protrusion 56. Furthermore, the inner mounting tube 73 is undercut-fitted to the outer peripheral surface of the central connecting tube 57. As a result, the relay member 70 is disposed above the upper tank portion 50 and is integrally assembled with the top wall portion 54. The inner mounting tube 73 may be fitted inside the central connecting tube 57. Furthermore, a protruding tube 74 that protrudes upward is formed in the center of the top wall portion 71 coaxially with the container axis O1.

[0035] The lever portion 80 is formed in a cylindrical shape with a top, and is undercut-fitted to the protruding tube 74 while surrounding the protruding tube 74 from the outside in the radial direction. As a result, the lever portion 80 is erected on the top wall portion 71 while being disposed coaxially with the container axis O1. A vertical rib 81 is formed on the inner peripheral surface of the lever portion 80, and fits into the vertical groove 75 formed in the protruding tube 74. As a result, the lever portion 80 is combined with the protruding tube 74 in a state where it is prevented from rotating around the container axis O1.

[0036] In this embodiment, an example is given in which the lever portion 80 is combined with the upper tank portion 50 via the relay member 70, but the relay member 70 is not essential and may not be provided. In this case, for example, the lever portion 80 may be combined with the top wall portion 54 of the upper tank portion 50, or the top wall portion 54 of the upper tank portion 50 and the lever portion 80 may be formed integrally. When the lever portion 80 is formed integrally with the top wall portion 54 of the upper tank portion 50, for example, the lever portion 80 may be formed in the shape of a solid cylinder, or in the shape of a tube that opens upward.

[0037] 1, a through-hole 90 is formed in the side wall 51 of the upper tank portion 50, penetrating the side wall 51 in the radial direction. The through-hole 90 is formed in the side wall 51, mainly in a region excluding the rear portion. The through-hole 90 is formed to extend circumferentially from the front portion to the rear portion of the side wall portion 51. Therefore, the portion of the side wall portion 51 that is continuous with the through-hole 90 in the circumferential direction (rear portion) functions as an elastically deformable support wall 51a that extends up and down over the entire length of the side wall portion 51.

[0038] The through-hole 90 is formed with the longest length in the up-down direction in the front portion of the side wall 51 (the portion located in the opposite region located on the radially opposite side of the support wall 51a across the container axis O1). Therefore, the upper opening edge 91 and the lower opening edge 92, which are located at the uppermost positions among the opening edges of the through-hole 90, are arranged to face each other in the up-down direction in the front portion of the side wall 51. Furthermore, the through-hole 90 is formed so that its vertical length decreases with increasing circumferential distance from the front portion of the side wall portion 51. Both circumferential end portions 93 of the through-hole 90 are formed so as to form a curved protrusion facing rearward in a side view seen from the outside in the radial direction.

[0039] The side wall 51 in which the above-described through hole 90 is formed has a pillar 100 that supports the opening of the through hole 90 in the vertical direction and is elastically deformable in the radial direction. The pillar 100 extends in the vertical direction and is shaped like a narrow plate with a thin wall thickness, and is formed integrally with the upper tank 50. Specifically, the pillar 100 is disposed in the front portion of the side wall 51, and an upper end portion thereof is integrally connected to an upper opening edge 91 of the through hole 90, and a lower end portion thereof is integrally connected to a lower opening edge 92 of the through hole 90. Therefore, the pillar portion 100 is disposed on the radially opposite side of the support wall 51a across the container axis O1.

[0040] The column 100 has a plurality of thin-walled portions 101 formed at intervals in the vertical direction. In the illustrated example, the thin-walled portions 101 are formed in three locations: the upper end, the lower end, and the middle of the column 100. The thin-walled portions 101 are formed so that their thickness is about half that of the other portions of the column 100. This allows the column portion 100 to bend elastically in the radial direction, with the thin-walled portion 101 as the base point.

[0041] (elastic membrane) The elastic membrane 40 is molded integrally with the side wall 51 of the upper tank portion 50 so as to surround the side wall 51 from the radial outside. In this embodiment, the elastic membrane 40 is formed so as to surround the entire side wall 51 from the radial outside. The portion of the elastic membrane 40 that covers the opening of the through hole 90 from the outside has a thickness equivalent to the total thickness of the portion where the side wall 51 of the upper tank portion 50 and the elastic membrane 40 overlap. As a result, a portion of the elastic membrane 40 completely covers the opening created by the through hole 90 from the outside and functions as the easily deformable portion 40a. The elastic membrane 40 is made of an elastically deformable soft material such as an elastomer, and is formed integrally with the upper tank portion 50 by, for example, two-color molding, insert molding, or the like.

[0042] In addition, the portion of the elastic membrane 40 that covers the opening of the through hole 90 from the outside may be formed thinner than the total thickness of the portion where the side wall portion 51 of the upper tank portion 50 and the elastic membrane 40 overlap.

[0043] Because the tank section 10 is configured as described above, as shown in FIG. 2, by holding the lever section 80 and pulling it forward (tilting operation) as indicated by arrow F, the upper tank section 50 can be bent forward while elastically deforming the support wall 51a and the column section 100. At this time, a compressive force can be applied in the vertical direction while bending the elastic membrane 40, which functions as the easily deformable portion 40a. This causes the easily deformable portion 40a to bend and deform so as to protrude toward the inside of the upper tank section 50. This applies pressure to the liquid chamber 11, increasing the internal pressure of the liquid chamber 11. After that, the tilting operation of the lever section 80 is released, and the support wall 51a, the column section 100, and the elastic membrane 40 are elastically restored to their original shape as shown in FIG. 1, thereby reducing the pressure in the liquid chamber 11. Therefore, the elastic film 40 including the lever portion 80 and the easily deformable portion 40 a functions as an operating member 12 that pressurizes and depressurizes the interior of the liquid chamber 11 .

[0044] (Mounting tube) 1 and 2, the mounting tubular portion 15 is formed to extend downward from the bottom wall portion 62 of the lower tank portion 60, and is disposed on the upper opening edge of the mouth portion 3 of the container body 2. The mounting tubular portion 15 is disposed coaxially with the container axis O1, and its upper end portion is formed integrally with the bottom wall portion 62. The lower end portion of the mounting tubular portion 15 is disposed on the upper opening edge of the mouth portion 3 of the container body 2 via the flange piece 23 of the support member 21.

[0045] An outside air introduction hole 111 that can introduce outside air into the container body 2 is formed in the mounting tube portion 15. The position where the outside air introduction hole 111 is formed is not particularly limited, but in the illustrated example, it is formed between the reinforcing ribs 110 that are adjacent to each other in the circumferential direction of the mounting tube portion 15. In addition, the mounting tube portion 15 may be provided with a check valve that allows outside air to be introduced into the container body 2 from the outside through the outside air inlet hole 111 and regulates the discharge of the contents W from inside the container body 2 to the outside through the outside air inlet hole 111.

[0046] The mounting tube portion 15 is connected to the mouth portion 3 of the container body 2 via a mounting cap 115 . The attachment cap 115 is formed in a cylindrical shape that radially surrounds the mouth 3 of the container body 2 and the lower end of the attachment tubular portion 15, and has an internal thread 116 formed on its inner circumferential surface that screws onto the external thread 20. An annular protrusion 117 that protrudes radially inward is formed on the upper end of the attachment cap 115. The attachment cap 115 is attached to the mouth 3 of the container body 2 with the protrusion 117 in contact with the lower end of the attachment tubular portion 15 from above. As a result, the entire dispenser 1 including the mounting tubular portion 15 is mounted to the mouth portion 3 of the container body 2 in a state where it is prevented from coming off upward.

[0047] A cylindrical valve frame 63 having a bottom and an opening facing upward is formed on the bottom wall 62 of the lower tank 60. The peripheral wall of the valve frame 63 is formed so as to penetrate the bottom wall 62 from top to bottom. In other words, the peripheral wall of the valve frame 63 is formed so as to extend above and below the bottom wall 62. A communication hole 64 is formed in the bottom wall of the valve frame 63, penetrating the bottom wall from top to bottom and communicating between the liquid chamber 11 and the container body 2. The communication hole 64 is arranged coaxially with the container axis O1 and is formed, for example, in a circular shape in a plan view.

[0048] A connecting cylindrical portion 65 extending downward is formed on the bottom wall of the valve frame 63. The connecting cylindrical portion 65 is disposed coaxially with the container axis O1 and is fitted inside the support cylinder 22. A dip tube 66 is fitted inside the connecting cylindrical portion 65. As a result, the inside of the dip tube 66 communicates with the inside of the liquid chamber 11 through the communication hole 64. The dip tube 66 is, for example, a flexible tube. However, this is not limited to this, and the dip tube 66 may be, for example, a simple cylindrical pipe that does not have flexibility. The lower end opening of the dip tube 66 is open to the inside of the container body 2.

[0049] (suction valve) The suction valve 17 comprises a cylindrical frame portion 130 fitted inside the valve frame 63, a plate-shaped valve body portion 131 arranged inside the frame portion 130 and blocking the communicating hole 64 in an openable manner, and an elastic connecting piece 132 that is elastically deformable and connects the outer peripheral edge portion of the valve body portion 131 to the inner surface of the frame portion 130. The valve body portion 131 is seated on the bottom wall of the valve frame 63 so as to be able to open the communication hole 64. A plurality of elastic connecting pieces 132 are arranged, for example, at intervals in the circumferential direction.

[0050] The suction valve 17 is a check valve that switches between communication and blocking between the inside of the container body 2 and the inside of the liquid chamber 11 in response to changes in the internal pressure within the liquid chamber 11. Specifically, the suction valve 17 is a check valve that allows the flow of the contents W from the inside of the container body 2 toward the liquid chamber 11, and restricts the flow of the contents W from the inside of the liquid chamber 11 toward the inside of the container body 2. Furthermore, the suction valve 17 opens when the pressure inside the liquid chamber 11 is reduced (negative pressure is created).

[0051] The suction valve 17 may be a single-point valve in which the valve body 131 is supported by one elastic connecting piece 132. Furthermore, although the present embodiment uses the suction valve 17 that utilizes the valve body 131 as an example, the present invention is not limited to this, and the suction valve 17 may also use, for example, a ball valve.

[0052] (Nozzle cylinder part) As shown in Figures 1 and 2, the nozzle tube portion 14 is integrally formed with the tank portion 10 via the lower tank portion 60, and is formed to extend forward from the tank portion 10 and is connected to the liquid chamber 11. The nozzle cylinder 14 includes a base end cylinder 140 connected to the lower tank 60 and the mounting cylinder 15 , and a tip end cylinder 150 combined with the base end cylinder 140 .

[0053] The central axis of the base end tubular portion 140 is referred to as the nozzle axis O2, and the direction along the nozzle axis O2 is referred to as the nozzle axial direction. Furthermore, the direction intersecting the nozzle axis O2 as viewed from the nozzle axial direction is referred to as the nozzle radial direction, and the direction circumferential around the nozzle axis O2 is referred to as the nozzle circumferential direction.

[0054] The rear end of the base end tubular portion 140 is closed by the mounting tubular portion 15. The upper part of the rear end side of the base end tubular portion 140 opens into the liquid chamber 11 through a first communication hole 67 formed in the bottom wall portion 62. Therefore, the inside of the base end tubular portion 140 and the inside of the liquid chamber 11 are in communication. The first communication hole 67 is formed in a portion of the bottom wall portion 62 of the lower tank portion 60 that is located forward of the valve frame 63.

[0055] A partition wall portion 141 is provided inside the base end tubular portion 140 to divide the interior of the base end tubular portion 140 in the front-rear direction. A seal axis 142 is formed in the center of the partition wall portion 141 and extends forward along the nozzle axis O2. Furthermore, second communication holes 143 are formed in the partition wall 141, penetrating the partition wall 141 in the front-rear direction. A plurality of second communication holes 143 are formed around the seal shaft 142 at intervals in the nozzle circumferential direction. Therefore, the contents W flow through the base end tubular portion 140 through the second communication holes 143.

[0056] The distal end tube portion 150 is assembled to the proximal end tube portion 140 from the front. The rear end of the tip tube portion 150 is fitted inside the base end tube portion 140. Furthermore, the tip tube portion 150 is provided with an attachment tube 151 that surrounds the base end tube portion 140 from the outside in the nozzle radial direction. The attachment tube 151 is fitted onto the base end tube portion 140 in a state in which it is prevented from slipping out forward relative to the base end tube portion 140. As a result, the tip tube portion 150 is integrally combined with the base end tube portion 140 so as to sandwich the base end tube portion 140 from the inside and outside in the nozzle radial direction.

[0057] The tip tube portion 150 is formed in an L-shape, extending diagonally downward and forward from the base end tube portion 140, and then bending downward midway. The nozzle opening 13 is formed at the tip of the tip tube portion 150. Therefore, the nozzle opening 13 opens downward. However, the shape of the tip tube portion 150 is not limited to the L-shape, and it may be formed in a straight shape, for example, with the nozzle port 13 opening forward.

[0058] (Discharge valve) The discharge valve 18 is disposed inside the nozzle cylinder portion 14 and serves as a check valve that switches between communication and blocking between the interior of the liquid chamber 11 and the nozzle port 13 in response to changes in the internal pressure of the liquid chamber 11 . Specifically, the discharge valve 18 is a check valve that allows the contents W to flow from the liquid chamber 11 to the nozzle opening 13, and restricts the flow of the contents W and air from the nozzle opening 13 to the liquid chamber 11. The discharge valve 18 opens when the liquid chamber 11 is pressurized.

[0059] The discharge valve 18 comprises an annular base 160 fitted to the inner peripheral surface of the base end tubular portion 140, an elastic cylinder 161 formed to extend forward from the base 160, and an annular elastic valve 162 formed to extend from the front end (tip end) of the elastic cylinder 161 toward the inside in the nozzle radial direction and in close contact with the outer peripheral surface of the seal shaft 142. The elastic valve 162 is elastically deformable in cooperation with the elastic deformation of the elastic cylinder 161 so that its inner peripheral edge moves away from the outer peripheral surface of the seal shaft 142. Therefore, the discharge valve 18 is capable of switching between communication between the inside of the liquid chamber 11 and the nozzle port 13 and blocking the communication therebetween by the elastic deformation of the elastic cylinder 161 and the elastic valve 162.

[0060] (Exhaust member) As shown in FIG. 1, a discharge member 170 is assembled inside the tank body 30 configured as described above. 1 and 3, the discharge member 170 is combined with the upper tank portion 50 and the lower tank portion 60. The discharge member 170 includes a first discharge tube 180 that extends upward from the bottom wall portion 62 of the lower tank portion 60 and has a first space R1 therein that communicates with the inside of the container body 2 through the communication hole 64, and a second discharge tube 190 that extends upward beyond the first discharge tube 180 and has a second space R2 therein that communicates with the inside of the nozzle tube portion 14 and is separated from the first space R1.

[0061] The first discharge tube 180 includes a lower tube 181 that surrounds from the radial outside the portion of the peripheral wall of the valve frame 63 that protrudes above the bottom wall portion 62, an intermediate tube 182 that extends upward from the lower tube 181 and has a slightly smaller diameter than the lower tube 181, an annular flange portion 183 that extends radially outward from the upper end of the intermediate tube 182, and an upper tube 184 that extends upward from the flange portion 183 and has a larger diameter than the intermediate tube 182. As a result, the first discharge tube 180 is formed into a multi-stage tube shape in which the outer diameter changes in multiple stages in the vertical direction, and is disposed coaxially with the container axis O1.

[0062] The lower cylinder 181 is fitted onto the outer peripheral surface of the peripheral wall of the valve frame 63, while contacting the bottom wall 62 of the lower tank 60 from above. The outer peripheral edge of the flange 183 is in contact with the collar 52 of the lower tank 60 from below. A horizontal groove 183a (see FIG. 3) is formed in part of the outer peripheral edge of the flange 183, which is recessed downward and extends radially. A restricting rib 52a formed on the lower surface of the flange 52 is housed within the lateral groove 183a. The restricting rib 52a is formed as a lateral rib that protrudes downward from the lower surface of the flange 52 and extends along the radial direction. Therefore, with the restricting rib 52a housed within the lateral groove 183a, the entire discharge member 170 is combined with the upper tank portion 50 in a state where it is prevented from rotating in the circumferential direction.

[0063] The upper cylinder 184 is fitted to the inside of the side wall portion 51 of the upper tank portion 50. The upper cylinder 184 is formed so that the height of the upper end portion is positioned lower than the lower opening edge 92 of the through-hole 90, and is fitted to the lower portion of the side wall portion 51.

[0064] The second discharge tube 190 is formed to extend upward from the flange portion 183. The second discharge tube 190 includes an outer wall 191 and an inner wall 192 that face each other in the radial direction, and a pair of connecting walls 193 that face each other in the circumferential direction and integrally connect the outer wall 191 and the inner wall 192.

[0065] The outer wall 191 extends straight in the vertical direction and is formed in an arc shape so as to extend in the circumferential direction in a plan view. In the example shown, the lower end of the outer wall 191 is formed integrally with the upper tube 184 of the first discharge tube 180. However, the outer wall 191 and the upper tube 184 do not need to be formed integrally, and it is sufficient if the outer wall 191 is formed so as to extend upward from the flange portion 183.

[0066] The inner wall 192 extends straight in the vertical direction and is formed in an arc shape so as to extend in the circumferential direction in a plan view, and is disposed radially inward of the outer wall 191. The inner wall 192 is formed so as to extend upward from the flange portion 183, and is formed so as to have a shorter circumferential width in the circumferential direction than the outer wall 191. The pair of connecting walls 193 extend straight in the vertical direction and are formed so as to connect the peripheral edge of the outer wall 191 and the peripheral edge of the inner wall 192 together in the radial direction over the entire length in plan view.

[0067] As a result, the opening shape of the opening of the second discharge tube 190 is formed in an arc shape extending in the circumferential direction in a plan view. Furthermore, the second discharge tube 190 is formed to be located rearward of the container axis O1. Therefore, the second discharge tube 190 is disposed radially inside the support wall 51a of the upper tank portion 50. Furthermore, the opening area S1 at the upper opening end of the second discharge tube 190 is formed to be smaller than the remaining area S2, which is the cross-sectional area of the tank section 10 within the plane including the upper opening end of the second discharge tube 190 when viewed in a plane, excluding the opening area S1 (see Figure 3).

[0068] An opening 185 is formed in a part of the flange portion 183, which penetrates the flange portion 183 vertically and communicates between the inside of the second discharge tube 190 and the inside of the lower tank portion 60. As a result, the second space R2 in the second discharge tube 190 communicates with the inside of the nozzle tube portion 14.

[0069] In the discharge member 170 configured as described above, the first space R1 communicates with the inside of the container body 2 through the communication hole 64. The second space R2 communicates with the inside of the nozzle tube portion 14 through the first communication hole 67 and the second communication hole 143. The first space R1 communicates with the second space R2 through an upper space R3 located above the second discharge tube 190 within the internal space of the liquid chamber 11. Therefore, the contents W sucked up from inside the container body 2 into the first space R1 are restricted from moving into the second space R2 until they reach the upper opening edge of the second discharge tube 190 (until they reach the upper space R3).

[0070] (Effect of the dispenser) Next, the operation of the dispenser 1 configured as described above will be briefly described. It should be noted that, by the priming operation described below, the contents W reach the upper opening edge of the second discharge tube 190 as shown in FIG. 1, and are temporarily contained in the liquid chamber 11 of the tank portion 10 so as to fill the first space R1 and the second space R2.

[0071] To eject the contents W in the liquid chamber 11, the liquid chamber 11 is pressurized by operating the operating member 12. Specifically, as shown in FIG. 2, the lever 80 is gripped and the tank 10 is tilted forward as indicated by arrow F. This allows the tank 10 to be tilted while elastically deforming the support wall 51a and the column 100, and also applies a compressive force in the vertical direction while bending the easily deformable portion 40a of the elastic membrane 40. Therefore, the easily deformable portion 40a is bent and deformed so as to protrude toward the inside of the upper tank 50, and the upper tank 50 can be pulled forward so as to compress the opening of the through-hole 90 in the vertical direction. This applies pressure to the liquid chamber 11, increasing the internal pressure of the liquid chamber 11.

[0072] The increase in the internal pressure of the liquid chamber 11 allows the discharge valve 18 to be opened while the suction valve 17 is closed. Therefore, as shown in Figure 2, the contents W temporarily stored in the liquid chamber 11 can be discharged to the outside from the nozzle opening 13 through the nozzle tube portion 14. Specifically, when the internal pressure of the liquid chamber 11 increases, the contents W can be supplied from the second space R2 of the liquid chamber 11 into the nozzle tube portion 14. This allows the contents W to be supplied into the interior of the elastic tube 161 of the discharge valve 18 through the second communication hole 143, and the pressure of the contents W can be applied from behind to the elastic valve 162, which is in close contact with the outer circumferential surface of the seal shaft 142. This allows the inner peripheral edge of the elastic valve 162 to be separated from the outer circumferential surface of the seal shaft 142 outward in the nozzle radial direction. This allows the discharge valve 18 to open, and the contents W to be discharged through the nozzle opening 13.

[0073] After the contents W have been discharged, the tilting operation of the lever 80 is released, thereby restoring and deforming the side wall 51 including the support wall 51a, the column 100, and the elastic membrane 40, as shown in FIG. 1. This allows the entire tank 10 to be restored to its original state, and the pressure inside the liquid chamber 11 can be reduced to a negative pressure. Therefore, the suction valve 17 can be opened with the discharge valve 18 closed. This allows the contents W inside the container body 2 to flow into the liquid chamber 11 and be temporarily stored therein, making it possible to prepare for the next discharge operation.

[0074] Specifically, when negative pressure is created inside the liquid chamber 11, the valve body 131 can be pulled upward while elastically deforming the elastic connecting piece 132 of the suction valve 17, and the valve body 131 can be separated from the bottom wall of the valve frame 63. This allows the suction valve 17 to open, and the communication hole 64 to be opened. Therefore, the content W inside the container body 2 can be sucked up into the liquid chamber 11 through the dip tube 66 and the communication hole 64.

[0075] Note that the internal pressure of the container body 2 becomes negative as the content W is sucked up into the liquid chamber 11. Therefore, outside air can be introduced into the container body 2 through the outside air introduction hole 111 formed in the mounting tube portion 15, and the internal pressure of the container body 2 can be increased. Furthermore, when the suction (storage) of the contents W into the liquid chamber 11 stops, the internal pressure of the liquid chamber 11 rises. Therefore, the elastic restoring force of the elastic connecting piece 132 can pull the valve body 131 downward, causing it to seat against the bottom wall of the valve frame 63. This allows the suction valve 17 to close again, and the communication hole 64 to be blocked.

[0076] Therefore, according to the dispenser 1 of this embodiment, a fixed amount of contents W can be stored in the liquid chamber 11, and a fixed amount of contents W can be dispensed by the subsequent dispensing operation. Therefore, the dispenser 1 can be used as a fixed-amount dispenser.

[0077] In particular, the dispenser 1 of this embodiment does not require the use of a cylinder, piston, metal coil spring, etc., which are conventionally used, thereby reducing the amount of metal material used. Furthermore, unlike a configuration in which a piston, etc., is provided inside the upper tank portion 50, there is no need to provide a member that slides against the inner circumferential surface of the side wall portion 51 of the upper tank portion 50. Therefore, even contents W containing solid matter such as abrasives can be appropriately dispensed. Therefore, a variety of contents W can be used, making the dispenser 1 easy to use.

[0078] Furthermore, according to the dispenser 1 of this embodiment, a fixed amount of the contents W can be stably dispensed each time the operating member 12 is operated. Specifically, when the dispenser 1 is first used, the tank portion 10 is empty, so it is necessary to operate the operating member 12 multiple times (priming operation) to suck up and store the contents W from the container body 2 into the liquid chamber 11 of the tank portion 10. In this case, since the discharge member 170 is combined with the tank portion main body 30, in the initial stage of the priming operation, the contents W can be sucked up into the first space R1 of the first discharge tube 180 while the air in the liquid chamber 11 is discharged to the outside through the second space R2 and the nozzle tube portion 14.

[0079] At this time, the second discharge tube 190, which is in communication with the inside of the nozzle tube portion 14, protrudes upward more than the first discharge tube 180, so that the contents W can be sucked up into the first space R1 until it reaches the upper open end of the second discharge tube 190 (see FIG. 1). Then, by a subsequent priming operation, the contents W sucked up into the first space R1 can be moved to the second space R2 of the second discharge tube 190 through the upper space. This completes priming, and preparation for discharge can be made.

[0080] In particular, since the contents W can be sucked up until it reaches the upper open end of the second discharge tube 190, the contents W can be stored in the liquid chamber 11 while most of the air inside the liquid chamber 11 is discharged to the outside. In other words, since the contents W cannot be discharged unless the contents W is sucked up to a certain height, most of the air inside the liquid chamber 11 can be discharged, and therefore a large amount of contents W can be stored in the liquid chamber 11.

[0081] Therefore, when discharging the contents W, the contents W can be efficiently pushed out by pressurizing the liquid chamber 11, and a fixed amount of the contents W can be stably discharged to the outside. Furthermore, even if the operating speed of the operating member 12, for example, the tilting speed of the tank part 10, is changed, the amount of air in the liquid chamber 11 is small, so the contents W can be stably pushed out by pressurization. Therefore, stable discharge performance can be maintained.

[0082] As described above, the dispenser 1 of this embodiment can reduce the use of metal materials, address environmental burdens, and provide an easy-to-use dispenser 1 that can dispense a variety of contents W, including contents W containing solid matter such as abrasives. In addition, according to the dispenser 1 of this embodiment, the priming operation can suck up and store a large amount of contents W while discharging a large amount of air from the liquid chamber 11 of the tank part 10. Therefore, by operating the operating member 12, a fixed amount of contents W can be responsively and stably discharged to the outside.

[0083] Furthermore, since the opening area S1 of the second discharge tube 190 is smaller than the remaining area S2 of the cross-sectional area of the tank portion 10, when discharging the contents W, the contents W in the second space R2 can be pushed out more efficiently by pressurizing the liquid chamber 11 by operating the operating member 12. In this respect, the contents W can be discharged more remarkably. Furthermore, since the second discharge tube 190 is positioned radially inside the support wall 51a, when discharging the contents W, the entire tank section 10 can be tilted toward the elastic membrane 40 without being affected by the second discharge tube 190 as shown in Figure 2, and the contents W in the second space R2 can be efficiently pushed by pressurizing the liquid chamber 11.

[0084] Furthermore, the through-hole 90 is formed so that its vertical length is longest at the front portion of the side wall 51, which is located radially opposite the support wall 51a across the container axis O1, and its vertical length decreases with increasing circumferential distance. Therefore, when the entire tank 10 is tilted forward by pulling it down, the opening of the through-hole 90 is significantly compressed in the vertical direction, and the easily deformable portion 40a of the elastic membrane 40 can be bent and deformed so as to significantly protrude toward the inside of the upper tank 50 (see FIG. 2). This allows for more efficient pressurization within the liquid chamber 11, enabling the contents W to be smoothly dispensed in a single dispensing operation.

[0085] Furthermore, when the entire tank portion 10 is tilted by pulling it down toward the front, the column portion 100 can be elastically deformed with little resistance, starting from the thin-walled portion 101. Therefore, the operating member 12 can be operated with a light operating force, improving the discharge operability. Furthermore, when the tilting operation of the tank part 10 is released, the thin-walled part 101 makes it easy for the entire pillar part 100 to restore its original shape, which contributes to the tank part 10 being able to restore its original shape smoothly.

[0086] (Second embodiment) Next, a second embodiment of a dispenser according to the present invention will be described with reference to the drawings. In the second embodiment, the same components as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

[0087] As shown in FIG. 4, in the dispenser 200 of this embodiment, the discharge member 170 is integrally combined with the upper tank portion 50 and is detachably combined with the lower tank portion 60. The upper tank portion 50 of this embodiment includes a first connecting tube 201 formed to extend downward from the inner peripheral edge of the flange portion 52. The first connecting tube 201 is disposed radially inward of the seal tube 55 with a gap between them.

[0088] In this embodiment, an upwardly protruding ring 202 is formed on the bottom wall of the valve frame 63. The protruding ring 202 is disposed coaxially with the container axis O1 and is formed in an annular shape that extends continuously in the circumferential direction along the opening periphery of the communicating hole 64.

[0089] The first discharge tube 210 of the discharge member 170 in this embodiment includes a fitting tube 211 fitted to the inside of the peripheral wall of the valve frame 63, an annular support flange 212 protruding radially inward from the lower end of the fitting tube 211, an annular flange portion 213 extending radially outward from the upper end of the fitting tube 211, and a second connecting tube 214 extending upward from the flange portion 213 and surrounding the first connecting tube 201 from the radially outward side.

[0090] The fitting cylinder 211 is formed to protrude upward beyond the peripheral wall of the valve frame 63. The support flange 212 is in close contact with the bottom wall of the valve frame 63 from above, and is in close contact with the outer peripheral surface of the protrusion ring 202 from the outside in the radial direction. The thickness of the support flange 212 is set to be equal to the height of the protrusion ring 202. The flange portion 213 is in tight contact from below with the lower end of the sealing tube 55 and the lower end of the first connecting tube 201. Furthermore, the outer peripheral edge of the flange portion 213 is in tight contact with the inner peripheral surface of the inner connecting tube portion 61.

[0091] The second connecting tube 214 is disposed between the first connecting tube 201 and the sealing tube 55, and is tightly attached to the first connecting tube 201 by undercut fitting. As a result, the entire discharge member 170 is integrally combined with the upper tank portion 50.

[0092] The second discharge tube 190 is formed to extend upward from the flange portion 213, and is disposed radially inside the support wall 51a of the upper tank portion 50. In the illustrated example, a gap is formed between the second discharge tube 190 and the support wall 51a.

[0093] The fitting cylinder 211 constituting the first discharge cylinder 210 of the discharge member 170 configured as described above has a recovery hole 215 formed therein that penetrates radially through the fitting cylinder 211. The recovery hole 215 is closed by the peripheral wall of the valve frame 63 of the lower tank portion 60 when the upper tank portion 50 is attached to the lower tank portion 60, and opens when the upper tank portion 50 is removed from the lower tank portion 60 (see FIG. 5).

[0094] Furthermore, the suction valve 17 of this embodiment is provided in the first discharge tube 210 . Specifically, the frame portion 130 is fitted inside the fitting tube 211. The valve body portion 131 is seated on the upper surface of the protrusion ring 202, thereby openably closing the communication hole 64. The elastic connecting piece 132 connects the outer peripheral edge of the valve body portion 131 and the inner peripheral surface of the fitting tube 211.

[0095] (Effect of the dispenser) Even in the case of the dispenser 200 of this embodiment configured as described above, it is possible to achieve the same effects as the dispenser 1 of the first embodiment. In addition, after the contents W in the container body 2 have been discharged, when the dispenser 200 is replaced with a new container body 2, the contents W (e.g., residual liquid) remaining in the liquid chamber 11 can be easily recovered into the container body 2.

[0096] Specifically, after the content W in the container body 2 has been discharged, the content W remains in the first space R1 and the second space R2, as shown in Fig. 4. In this case, before removing the lower tank part 60 from the mouth part 3 of the container body 2, the upper tank part 50 is removed from the lower tank part 60 as shown in Fig. 5. This allows the discharge member 170 and the suction valve 17 to be removed together with the upper tank portion 50, and also opens the recovery hole 215 that was closed by the fitting tube 211 of the lower tank portion 60. This allows the contents W remaining in the second discharge tube 190 to be recovered into the container body 2, as indicated by the arrow N in Figure 5, and also allows the contents W remaining in the first discharge tube 210 to be recovered into the container body 2 through the recovery hole 215. When recovering the remaining contents W from the recovery hole 215, it is not necessary to completely remove the upper tank portion 50 from the lower tank portion 60; it is sufficient to move the upper tank portion 50 to a position where the recovery hole 215 opens.

[0097] Thereafter, for example, by assembling the upper tank portion 50 to the lower tank portion 60 and removing the attachment cap 115 from the mouth portion 3 of the container body 2, the entire dispenser 200 including the lower tank portion 60 can be removed and replaced with a new container body 2. Therefore, when replacing the dispenser, it is possible to prevent the remaining contents W from scattering around, and it is easy to prevent inconveniences such as staining the fingertips or surrounding area.

[0098] Although the embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. The embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. The embodiments and their modifications include, for example, those that can be easily imagined by a person skilled in the art, those that are substantially the same, and those that are equivalent.

[0099] For example, in each of the above embodiments, the position where the second discharge tube 190 is formed may be changed as appropriate as long as it is a position that is not affected by the tilting operation of the tank unit 10. Furthermore, the amount of upward protrusion of the second discharge tube 190 may be changed as appropriate depending on the size of the interior of the liquid chamber 11, etc. Furthermore, in each of the above embodiments, an example has been described in which the elastic membrane 40 is integrally molded so as to surround the side wall portion 51 of the upper tank portion 50 from the radial outside, but this is not limited to this case, and the elastic membrane 40 may be formed so as to at least block the through hole 90.

[0100] The present invention further includes the following aspects. <1> a cylindrical tank portion with a top, which is disposed above the mouth of the container body and has a storage chamber therein for temporarily storing the contents; an operating member for pressurizing and depressurizing the interior of the storage chamber; a nozzle tube portion having a nozzle opening for discharging the contents, protruding toward the side of the tank portion and communicating with the inside of the storage chamber; a suction valve that switches between communication and blocking between the inside of the container body and the inside of the storage chamber in accordance with a change in the internal pressure of the storage chamber, and that opens when the pressure inside the storage chamber is reduced; a discharge valve that is provided in the nozzle cylindrical portion, that switches between communication and blocking between the storage chamber and the nozzle port in accordance with changes in internal pressure of the storage chamber, and that opens when the inside of the storage chamber is pressurized, the tank portion includes a tank portion main body having a cylindrical side wall portion formed to be elastically deformable and a top wall portion closing an upper end opening of the side wall portion, The tank body is provided with a discharge member including a first discharge tube extending upward and having a first space therein that is in communication with the inside of the container body, and a second discharge tube extending upward beyond the first discharge tube and having a second space therein that is in communication with the inside of the nozzle tube portion and is separated from the first space, The dispenser is characterized in that the first space communicates with the second space through an upper space located above the second discharge tube within the internal space of the storage chamber. <2> <1> In the dispenser described in The tank body includes: a lower tank portion removably attached to the mouth portion of the container body; an upper tank portion having a cylindrical shape with a top, the upper tank portion having the side wall portion and the top wall portion and being detachably attached to the lower tank portion, the discharge member is integrally combined with the upper tank portion and detachably combined with the lower tank portion, The suction valve is provided in the first discharge tube, The first discharge tube is formed with a recovery hole that penetrates the first discharge tube in a radial direction, The discharger, wherein the recovery hole is closed by the lower tank portion when the upper tank portion is attached to the lower tank portion, and opens when the upper tank portion is detached from the lower tank portion. <3> <1> or <2> In the dispenser described in In a plan view seen from a direction along the central axis of the tank portion, the opening area at the upper opening end of the second discharge tube is smaller than the remaining area of the cross-sectional area within the tank portion excluding the opening area. <4> <1> from <3> In the dispenser according to any one of the above items, the tank portion includes an elastic membrane integrally molded with the side wall portion so as to surround the side wall portion from the radial outside, a through-hole is formed in the side wall portion, the through-hole passing through the side wall portion in a radial direction and extending in a circumferential direction around a central axis of the tank portion; a portion of the side wall portion that is continuous in a circumferential direction with respect to the through hole functions as an elastically deformable support wall that extends vertically over the entire length of the side wall portion, the elastic membrane covers the opening formed by the through hole from the outside, The second discharge tube is disposed radially inside the support wall. [Explanation of symbols]

[0101] O1…Container axis (center axis) R1: First space R2…Second space R3…Upper space S1: Opening area of the second exhaust pipe S2…Residual area W…Contents 1, 200...dispenser 2...Container body 3... Mouth of the container body 10...Tank section 11...liquid chamber (storage chamber) 12...Operating member 13...Nozzle opening 14...Nozzle cylinder 17...Suction valve 18...Discharge valve 30...Tank body 40...Elastic membrane 50...Upper tank section 51...Side wall 51a…support wall 54...Top wall part 60...Lower tank section 90...Through hole 180, 210...1st discharge tube 170...Discharge member 190…Second discharge tube 215...Recovery hole

Claims

1. a cylindrical tank portion with a top, which is disposed above the mouth of the container body and has a storage chamber therein for temporarily storing the contents; an operating member for pressurizing and depressurizing the interior of the storage chamber; a nozzle tube portion having a nozzle opening for discharging the contents, protruding toward the side of the tank portion and communicating with the inside of the storage chamber; a suction valve that switches between communication and blocking between the inside of the container body and the inside of the storage chamber in accordance with a change in the internal pressure of the storage chamber, and that opens when the pressure inside the storage chamber is reduced; a discharge valve that is provided in the nozzle cylindrical portion, that switches between communication and blocking between the storage chamber and the nozzle port in accordance with changes in internal pressure of the storage chamber, and that opens when the inside of the storage chamber is pressurized, the tank portion includes a tank portion main body having a cylindrical side wall portion formed to be elastically deformable and a top wall portion closing an upper end opening of the side wall portion, The tank body is provided with a discharge member including a first discharge tube extending upward and having a first space therein that is in communication with the inside of the container body, and a second discharge tube extending upward beyond the first discharge tube and having a second space therein that is in communication with the inside of the nozzle tube portion and is separated from the first space, The dispenser is characterized in that the first space is in communication with the second space through an upper space located above the second discharge tube within the internal space of the storage chamber.

2. The dispenser of claim 1 , The tank body includes: a lower tank portion removably attached to the mouth portion of the container body; an upper tank portion having a cylindrical shape with a top, the upper tank portion having the side wall portion and the top wall portion and being detachably attached to the lower tank portion, the discharge member is integrally combined with the upper tank portion and detachably combined with the lower tank portion, The suction valve is provided in the first discharge tube, The first discharge tube is formed with a recovery hole that penetrates the first discharge tube in a radial direction, The discharger, wherein the recovery hole is closed by the lower tank portion when the upper tank portion is attached to the lower tank portion, and opens when the upper tank portion is detached from the lower tank portion.

3. The dispenser according to claim 1 or 2, In a plan view seen from a direction along the central axis of the tank portion, the opening area at the upper opening end of the second discharge tube is smaller than the remaining area of the cross-sectional area within the tank portion excluding the opening area.

4. The dispenser according to claim 1 or 2, the tank portion includes an elastic membrane integrally molded with the side wall portion so as to surround the side wall portion from the radial outside, a through-hole is formed in the side wall portion, the through-hole passing through the side wall portion in a radial direction and extending in a circumferential direction around a central axis of the tank portion; a portion of the side wall portion that is continuous in a circumferential direction with respect to the through hole functions as an elastically deformable support wall that extends vertically over the entire length of the side wall portion, the elastic membrane covers the opening formed by the through hole from the outside, The second discharge tube is disposed radially inward of the support wall.

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