Dispenser

Abstract

To dispense contents while preventing the contents from being scattered to the surrounding area.SOLUTION: A dispenser 1 includes: a tank portion 10 having a storage chamber 11 therein; an operation member 12 configured to pressurize and depressurize inside of the storage chamber; a nozzle cylinder portion 14 having a nozzle port 13; a suction valve 16 configured to open when the inside of the storage chamber is depressurized; and a dispensing valve 17 configured to open when the inside of the storage chamber is pressurized. The nozzle cylinder portion has therein a partition wall 190 with which a content flowing from the inside of the storage chamber toward the nozzle port collides, and a guide rib 200 which is disposed closer to the nozzle port than the partition wall and guides the content after colliding with the partition wall to the nozzle port. The partition wall has a pair of main partition walls 191 provided so as to face each other across at least a nozzle shaft O2. The guide rib is formed so as to continuously extend along the nozzle cylinder portion and is disposed between the pair of main partition walls as viewed from a direction along the nozzle shaft.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 the conventional dispenser, when the contents are dispensed, the contents pushed out from the liquid chamber tend to flow forcefully into the nozzle tube, causing the contents to be dispensed from the discharge port in a turbulent state with force, which tends to cause the contents to scatter around, leaving room for improvement.

[0007] The present invention has been made in consideration of the above circumstances, and its object is to provide a dispenser that can dispense contents while suppressing scattering to the surrounding area. [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 that switches between communication between the inside of the container body and the storage chamber in accordance with changes in the internal pressure of the storage chamber and opens when the internal pressure of the storage chamber is reduced; and a discharge valve provided in the nozzle tube section that switches between communication between the inside of the storage chamber and the nozzle opening in accordance with changes in the internal pressure of the storage chamber and opens when the internal pressure of the storage chamber is increased. and wherein the nozzle cylinder portion is provided with a partition wall formed to narrow the flow path area within the nozzle cylinder portion, against which contents heading from the storage chamber toward the nozzle opening collide, and a guide rib arranged closer to the nozzle opening than the partition wall, for guiding the contents after colliding with the partition wall to the nozzle opening, wherein the partition wall is formed to protrude from the inner surface of the nozzle cylinder portion and has a pair of main partition walls provided opposite to each other across at least a nozzle axis, and the guide rib protrudes from the inner surface of the nozzle cylinder portion and is formed to extend continuously along the nozzle cylinder portion and is arranged between the pair of main partition walls when viewed from the direction along the nozzle axis.

[0009] According to the dispenser of the present invention, by operating the operating member to pressurize the storage chamber of the tank, the discharge valve can be opened with the suction valve closed. This allows the contents temporarily stored in the storage chamber to be discharged to the outside from the nozzle opening through the nozzle tube. After the contents are discharged, the pressure inside the storage chamber of the tank is reduced, allowing the suction valve to be opened with the discharge valve closed. This allows the contents in the container body to flow into the storage chamber and be temporarily stored therein, making it possible to prepare for the next discharge operation.

[0010] In particular, since a partition wall and guide ribs are provided inside the nozzle tube portion, the contents can be discharged while preventing scattering to the surrounding area. Specifically, when the contents are supplied from the storage chamber into the nozzle tube portion by pressurizing the storage chamber, the contents can be caused to collide with the pair of main partition walls that make up the partition wall before they reach the nozzle orifice. This reduces the flow rate of the contents due to pressure loss. Therefore, the contents can be caused to flow toward the nozzle orifice located downstream of the partition walls while suppressing their momentum.

[0011] A guide rib is formed downstream of the partition wall so as to extend continuously along the nozzle tube portion. Furthermore, the guide rib is located between the pair of main partition walls when viewed along the nozzle axis. Therefore, the contents whose momentum has been suppressed by collision with the pair of main partition walls can be actively guided along the guide rib toward the nozzle opening. This allows the contents to flow stably along the guide rib. Furthermore, the flow resistance (frictional resistance) generated between the guide rib and the contents can further reduce the flow rate. Therefore, in the process of flowing the contents along the guide ribs, the flow of the contents can be controlled and straightened. Therefore, the contents can be discharged from the nozzle opening to the outside in a straight state with controlled momentum, rather than in a forceful turbulent state. As a result, the contents can be discharged from the nozzle opening to the outside in a straight state with controlled scattering to the surroundings. Therefore, the generation of splashes and the like can be suppressed, and the contents can be discharged without soiling the surroundings.

[0012] (2) The partition may be formed to protrude from the inner surface of the nozzle tube portion and have a sub-partition arranged between a pair of the main partitions, and the guide rib may be formed integrally with the sub-partition and extend continuously from the sub-partition toward the nozzle opening.

[0013] In this case, the contents can be caused to collide with the pair of main and sub-partitions before reaching the nozzle opening, further reducing the flow rate of the contents. In particular, since the sub-partition is disposed between the pair of main partitions and is integrally formed with the guide rib, the contents whose momentum has been reduced by the collision can flow toward the guide rib through the narrow space between the pair of main and sub-partitions. Therefore, the contents can be actively supplied to both sides of the guide rib, and the contents can flow toward the nozzle opening while properly guiding them along the guide rib. This allows the contents to be discharged to the outside from the nozzle opening in a rectified state with the momentum further suppressed.

[0014] (3) The nozzle tube portion may include a first nozzle tube formed to extend from the tank portion toward the side of the tank portion, and a second nozzle tube extending downward from the tip of the first nozzle tube and having the nozzle opening at its tip, and the partition may be provided inside the connection portion between the first nozzle tube and the second nozzle tube, and the guide rib may be provided inside the second nozzle tube.

[0015] In this case, since a partition is provided at the connecting portion (bent portion) between the first nozzle tube and the second nozzle tube, the shape of the connecting portion itself (bent shape) can be used to suppress the momentum of the contents. Therefore, the synergistic effect with the partition can more efficiently reduce the flow rate of the contents and suppress their momentum.

[0016] (4) The tank portion may include 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 an elastic membrane integrally molded with the side wall portion so as to surround the side wall portion from the radial outside.

[0017] In this case, by using the operating member to tilt the tank, for example, by pulling it down, the side wall and elastic membrane of the tank body are elastically deformed, and the entire tank is pulled down so as to be crushed in the vertical direction. This allows the interior of the tank chamber to be pressurized efficiently, and the contents to be discharged more stably. After the contents are dispensed, when the tilting operation of the tank section using the operating member is released, the sidewall section and elastic membrane are restored to their 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 dispense operation.

[0018] 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. [Effects of the Invention]

[0019] According to the dispenser of the present invention, the contents can be dispensed while preventing scattering to the surroundings. [Brief explanation of the drawings]

[0020] [Figure 1] 1 is a longitudinal sectional view showing an 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. 2 is a perspective view of a tip nozzle cylinder that constitutes the nozzle cylinder portion shown in FIG. [Figure 5] FIG. 5 is a vertical cross-sectional view of the tip nozzle cylinder shown in FIG. [Figure 6] 5 is a partial view of a tip nozzle barrel including a cross section taken along line AA shown in FIG. 4. DETAILED DESCRIPTION OF THE INVENTION

[0021] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a dispenser according to the present invention will be described 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 16 that opens when the pressure inside the liquid chamber 11 is reduced, and a discharge valve 17 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, and the tank portion 10 side along the container axis O1 is defined as the upper side, and the container body 2 side is defined as the lower side. Furthermore, in a plan view seen from the container axis O1 direction, 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 defined as the front, and the opposite side is defined as the rear.

[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, etc., but is not particularly limited to this. In the illustrated example, the container body 2 has a mouth 3 with a relatively large diameter.

[0025] A support member 20 is disposed coaxially with the container axis O1 inside the mouth portion 3 of the container body 2. The support member 20 includes a cylindrical support tube 21 and an annular flange piece 22 that protrudes radially outward from the support tube 21. The support tube 21 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 22 is arranged on the upper opening edge of the mouth 3 of the container body 2. As a result, the support member 20 is arranged inside the mouth 3 of the container body 2 while being positioned in the vertical direction.

[0026] (Tank section) 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 tube 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 may be, for example, an undercut fitting. Furthermore, the upper tank portion 50 and the lower tank portion 60 are combined in a state where a certain level of sealing is ensured.

[0030] 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.

[0031] 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 is formed in a cylindrical shape with a top having a top wall portion 71, and is disposed above the upper tank portion 50 and is integrally combined with the top wall portion 54. A protruding tube 72 that protrudes upward is formed in the center of the top wall portion 71 and is coaxial with the container axis O1. The lever portion 80 is formed in a topped cylindrical shape and is undercut-fitted to the protruding tube 72. As a result, the lever portion 80 is arranged coaxially with the container axis O1 and stands on the top wall portion 71. The lever portion 80 is combined with the protruding tube 72 in a state where it is prevented from rotating around the container axis O1.

[0032] 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.

[0033] As shown in Fig. 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 a region of the side wall 51 excluding mainly the rear portion. The through-hole 90 is formed to extend circumferentially from the front portion to the rear portion of the side wall 51. Therefore, the portion of the side wall 51 that is continuous with the through-hole 90 in the circumferential direction (rear portion) functions as a support wall 51a that extends vertically over the entire length of the side wall 51.

[0034] 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.

[0035] A pillar portion 100 is formed on the side wall portion 51. The pillar portion 100 supports the opening of the through-hole 90 in the vertical direction and is elastically deformable in the radial direction. The pillar portion 100 extends in the vertical direction and is formed in the shape of a narrow plate with a thin wall thickness, and is formed integrally with the upper tank portion 50. Specifically, the pillar portion 100 is disposed in the front portion of the side wall portion 51, with its upper end integrally connected to the upper opening edge 91 of the through-hole 90 and its lower end integrally connected to the lower opening edge 92 of the through-hole 90. Therefore, the pillar portion 100 is disposed on the radially opposite side of the container axis O1 from the support wall 51a.

[0036] The column portion 100 is formed with a plurality of thin-walled portions 101 spaced apart in the vertical direction. In the illustrated example, the thin-walled portions 101 are formed in three locations on the column portion 100: the upper end, the lower end, and the middle portion. The thin-walled portions 101 are formed so that their thickness is about half that of the other portions of the column portion 100. This allows the column portion 100 to bend elastically in the radial direction, with the thin-walled portions 101 as base points.

[0037] (elastic membrane) The elastic membrane 40 is integrally molded with the side wall portion 51 of the upper tank portion 50 so as to surround the side wall portion 51 from the radial outside. In this embodiment, the elastic membrane 40 is formed so as to surround the entire side wall portion 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 portion 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 an easily deformable portion 40a. The elastic membrane 40 is made of a soft material that is elastically deformable, such as elastomer, and is formed integrally with the upper tank portion 50 by, for example, two-color molding or insert molding.

[0038] 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.

[0039] 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 .

[0040] (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 22 of the support member 20.

[0041] The mounting tube portion 15 is formed with an outside air introduction hole 15a that can introduce outside air into the container body 2. 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 introduction hole 15a and that restricts the discharge of the contents W from the container body 2 to the outside through the outside air introduction hole 15a.

[0042] The mounting tube portion 15 is connected to the mouth portion 3 of the container body 2 via a mounting cap 110 . The attachment cap 110 is attached to the mouth 3 of the container body 2 by, for example, screw connection, with the annular protrusion 111 in contact from above with the lower end of the attachment tubular part 15. As a result, the entire dispenser 1 including the attachment tubular part 15 is attached to the mouth 3 of the container body 2 in a state where it is prevented from coming off upward.

[0043] A cylindrical valve frame 63 with a bottom that opens upward is formed in the bottom wall 62 of the lower tank portion 60. The peripheral wall of the valve frame 63 is formed 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 providing communication 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.

[0044] 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 21. 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.

[0045] (suction valve) The suction valve 16 comprises a cylindrical frame portion 120 fitted inside the valve frame 63, a plate-shaped valve body portion 121 arranged inside the frame portion 120 and blocking the communicating hole 64 in an openable manner, and an elastic connecting piece 122 that can be elastically deformed and connects the outer peripheral edge portion of the valve body portion 121 to the inner surface of the frame portion 120. The valve body portion 121 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 122 are arranged, for example, at intervals in the circumferential direction.

[0046] The suction valve 16 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 16 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. The suction valve 16 also opens when the pressure inside the liquid chamber 11 is reduced (negative pressure is created).

[0047] The suction valve 16 may be a single-point valve in which the valve body 121 is supported by one elastic connecting piece 122. Furthermore, although the present embodiment uses the suction valve 16 that utilizes the valve body 121 as an example, the present invention is not limited to this, and the suction valve 16 may also utilize, for example, a ball valve.

[0048] (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 (sideways) from the tank portion 10, and is connected to the liquid chamber 11. The nozzle cylinder portion 14 includes a base end nozzle cylinder 130 connected to the lower tank portion 60 and the mounting cylinder portion 15 , and a tip end nozzle cylinder 140 combined with the base end nozzle cylinder 130 .

[0049] The central axis of the base-end nozzle cylinder 130 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.

[0050] The rear end of the base end nozzle cylinder 130 is closed by the mounting cylinder portion 15. The upper part of the rear end side of the base end nozzle cylinder 130 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 nozzle cylinder 130 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.

[0051] A partition wall portion 131 that divides the interior of the base-end nozzle cylinder 130 in the front-rear direction is provided inside the base-end nozzle cylinder 130. A seal axis 132 that extends forward along the nozzle axis O2 is formed in the center of the partition wall portion 131. Furthermore, second communication holes 133 are formed in the partition wall 131, penetrating the partition wall 131 in the front-rear direction. A plurality of second communication holes 133 are formed around the seal shaft 132 at intervals in the nozzle circumferential direction. Therefore, the contents W flow through the base-end nozzle tube 130 through the second communication holes 133.

[0052] The tip nozzle cylinder 140 is combined with the base nozzle cylinder 130 from the front. The tip nozzle tube 140 comprises a first tip nozzle tube (first nozzle tube of the present invention) 141 extending toward the front of the tank section 10, and a second tip nozzle tube (second nozzle tube of the present invention) 142 extending downward from the tip of the first tip nozzle tube 141 and having a nozzle opening 13 at its tip. The first tip nozzle cylinder 141 and the second tip nozzle cylinder 142 are integrally formed. In the illustrated example, the first tip nozzle cylinder 141 extends obliquely downward and forward from the base end nozzle cylinder 130. The second tip nozzle cylinder 142 extends in a curved manner downward from the tip of the first tip nozzle cylinder 141. As a result, the entire tip nozzle cylinder 140 is formed in an L shape. The nozzle port 13 opens downward.

[0053] The rear end of the first tip nozzle cylinder 141 is fitted inside the base end nozzle cylinder 130. As a result, the first tip nozzle cylinder 141 is connected to the tank section 10 via the base end nozzle cylinder 130. The first tip nozzle cylinder 141 is equipped with an attachment cylinder 143 that surrounds the base end nozzle cylinder 130 from the outside in the nozzle radial direction. The attachment cylinder 143 is fitted onto the base end nozzle cylinder 130 in a state where it is prevented from coming off forward relative to the base end nozzle cylinder 130. As a result, the first tip nozzle cylinder 141 is integrally combined with the base end nozzle cylinder 130 so as to sandwich the base end nozzle cylinder 130 from the inside and outside in the nozzle radial direction.

[0054] (Discharge valve) The discharge valve 17 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 17 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 17 opens when the liquid chamber 11 is pressurized.

[0055] The discharge valve 17 comprises an annular base 150 fitted to the inner peripheral surface of the base nozzle tube 130, an elastic tube 151 formed to extend forward from the base 150, and an annular elastic valve 152 formed to extend from the front end (tip end) of the elastic tube 151 toward the inside in the nozzle radial direction and in close contact with the outer peripheral surface of the seal shaft 132. The elastic valve 152 is elastically deformable in cooperation with the elastic deformation of the elastic cylinder 151 so that its inner peripheral edge moves away from the outer peripheral surface of the seal shaft 132. Therefore, the discharge valve 17 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 151 and the elastic valve 152.

[0056] (Exhaust member) 1, a discharge member 160 is combined inside the tank main body 30. As shown in FIGS. 1 and 3, the discharge member 160 is combined with the upper tank portion 50 and the lower tank portion 60. The discharge member 160 includes a first discharge tube 170 that extends upward from the bottom wall portion 62 of the lower tank portion 60 and has a first space R1 inside that is connected to the inside of the container body 2 through a communication hole 64, and a second discharge tube 180 that extends upward beyond the first discharge tube 170 and has a second space R2 inside that is connected to the inside of the nozzle tube portion 14 and is partitioned from the first space R1.

[0057] The first discharge tube 170 is formed in a multi-stage cylindrical shape in which the outer diameter changes in multiple stages in the vertical direction, and is disposed coaxially with the container axis O1. The first discharge tube 170 is fitted onto the outer circumferential surface of the peripheral wall of the valve frame 63 with its lower end contacting the bottom wall 62 of the lower tank portion 60 from above, and its upper end is fitted onto the inside of the side wall 51 of the upper tank portion 50. Furthermore, the first discharge tube 170 has an annular flange portion 171 that contacts the flange portion 52 of the upper tank portion 50 from below. A horizontal groove 172 (see FIG. 3) that is recessed downward and extends radially is formed in part of the outer circumferential edge of the flange portion 171. A restricting rib 52a formed on the underside of the flange portion 52 is housed within the horizontal groove 172. As a result, the entire discharge member 160 is combined with the upper tank portion 50 in a state where it is prevented from rotating in the circumferential direction.

[0058] The second discharge tube 180 is formed to extend upward from the flange portion 171 of the first discharge tube 170 and is formed to be located rearward of the container axis O1. As a result, the second discharge tube 180 is disposed radially inside the support wall 51a of the upper tank portion 50. The opening shape of the opening of the second discharge tube 180 is formed in an arc shape extending in the circumferential direction in a plan view. The opening area S1 at the upper open end of the second discharge tube 180 is formed to be smaller than the remaining area S2, which is obtained by subtracting the opening area S1 from the cross-sectional area of ​​the tank unit 10 in a plane including the upper open end of the second discharge tube 180 in a plan view (see FIG. 3).

[0059] An opening 173 is formed in a part of the flange portion 171, which penetrates the flange portion 171 vertically and connects the inside of the second discharge tube 180 to the inside of the lower tank portion 60. As a result, the second space R2 in the second discharge tube 180 communicates with the inside of the nozzle tube portion 14.

[0060] In the discharge member 160 configured as described above, the first space R1 communicates with 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 133. Furthermore, the first space R1 communicates with the second space R2 through an upper space R3 located above the second discharge tube 180 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 180 (until they reach the upper space R3).

[0061] (Bulkheads, guide ribs) In the dispenser 1 configured as described above, as shown in Figures 1, 3 to 6, the inside of the tip nozzle tube 140 that constitutes the nozzle tube portion 14 is provided with a partition wall 190 against which the contents W collide on their way from the liquid chamber 11 toward the nozzle opening 13, and a guide rib 200 that guides the contents W to the nozzle opening 13 after colliding with the partition wall 190.

[0062] The partition wall 190 is provided inside the connecting portion between the first front end nozzle cylinder 141 and the second front end nozzle cylinder 142. In other words, the partition wall 190 is provided at the bent portion of the front end nozzle cylinder 140. Specifically, the partition 190 has a pair of first partitions (main partitions according to the present invention) 191 and second partitions (sub-partitions according to the present invention) 192 formed to protrude inward in the nozzle radial direction from the inner surface of the first tip nozzle tube 141 so as to narrow the flow path area within the tip nozzle tube 140.

[0063] The pair of first partition walls 191 are formed to face each other in the nozzle radial direction with the nozzle axis O2 in between. The first partition walls 191 are formed to extend rearward as they go from top to bottom. As a result, the first partition walls 191 are formed to be inclined with respect to the nozzle axis O2, and have a first collision surface 191a facing rearward (the upstream side of the first tip nozzle cylinder 141). The second partition wall 192 is disposed between the pair of first partition walls 191 and is formed to extend rearward as it goes from top to bottom. In the example shown, the second partition wall 192 is formed to be inclined at the same inclination angle as the pair of first partition walls 191 and is disposed parallel to the pair of first partition walls 191. Like the first partition walls 191, the second partition wall 192 has a second collision surface 192a facing rearward.

[0064] The guide rib 200 is disposed closer to the nozzle opening 13 than the partition wall 190, and serves to guide the contents W that collide with the partition wall 190 (first partition wall 191, second partition wall 192) to the nozzle opening 13. The guide rib 200 is formed so as to protrude rearward from the inner surface of the second tip nozzle cylinder 142, and is formed as a vertical rib so as to extend continuously along the second tip nozzle cylinder 142. The guide rib 200 is disposed so as to be located between the pair of first partition walls 191 when viewed from the direction along the nozzle axis O2, and its upper end is formed integrally with the second partition wall 192. As a result, the guide rib 200 is formed so as to extend continuously from the second partition wall 192 toward the nozzle port 13.

[0065] (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 later, the contents W reach the upper opening edge of the second discharge tube 180 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.

[0066] 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.

[0067] The increase in the internal pressure of the liquid chamber 11 allows the discharge valve 17 to be opened while the suction valve 16 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 151 of the discharge valve 17 through the second communication hole 133, and the pressure of the contents W can be applied from behind to the elastic valve 152, which is in close contact with the outer circumferential surface of the seal shaft 132. This allows the inner peripheral edge of the elastic valve 152 to be separated from the outer circumferential surface of the seal shaft 132 outward in the nozzle radial direction. This allows the discharge valve 17 to open, and the contents W to be discharged through the nozzle opening 13.

[0068] After the contents W are discharged, the tilting operation of the lever 80 is released, which causes the side wall 51 including the support wall 51a, the column 100, and the elastic membrane 40 to return to their original state, as shown in FIG. 1. This allows the entire tank 10 to return to its original state, and the pressure inside the liquid chamber 11 can be reduced to a negative pressure. Therefore, the suction valve 16 can be opened with the discharge valve 17 closed. This allows the contents W in the container body 2 to flow into the liquid chamber 11 and be temporarily stored therein, preparing for the next discharge operation.

[0069] Specifically, when negative pressure is created inside the liquid chamber 11, the valve body 121 can be pulled upward while elastically deforming the elastic connecting piece 122 of the suction valve 16, and the valve body 121 can be separated from the bottom wall of the valve frame 63. This allows the suction valve 16 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.

[0070] 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 15a 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 122 can pull the valve body 121 downward, causing it to seat against the bottom wall of the valve frame 63. This allows the suction valve 16 to close again, and the communication hole 64 to be blocked.

[0071] 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.

[0072] In particular, according to the dispenser 1 of this embodiment, as shown in Figures 2, 5 and 6, a partition 190 (a pair of first partitions 191 and second partitions 192) and a guide rib 200 are provided inside the tip nozzle tube 140, so that the contents W can be dispensed while preventing them from scattering to the surrounding area. Specifically, when the contents W are supplied from the liquid chamber 11 into the nozzle tube portion 14 by pressurizing the liquid chamber 11, the contents W can be caused to collide with the first collision surfaces 191a of the pair of first partition walls 191 and the second collision surface 192a of the second partition wall 192 before reaching the nozzle opening 13. This reduces the flow rate of the contents W due to pressure loss. Therefore, the contents W can be made to flow toward the nozzle opening 13, which is located downstream of the partition wall 190, while suppressing the momentum of the contents W.

[0073] A guide rib 200 is formed downstream of the partition 190 so as to extend continuously along the second tip nozzle tube 142. Moreover, the guide rib 200 is disposed between the pair of first partitions 191 when viewed from the direction along the nozzle axis O2. Therefore, the contents W, whose momentum has been suppressed by collision with the pair of first partitions 191, can be actively guided along the guide rib 200 and flow toward the nozzle opening 13. Therefore, the contents W can be stably flowed along the guide rib 200. Furthermore, the flow resistance (frictional resistance) generated between the contents W and the guide rib 200 can further reduce the flow speed of the contents W. Therefore, the flow of the contents W can be rectified while suppressing the flow of the contents W in the process of flowing the contents W along the guide rib 200. Therefore, the contents W can be discharged to the outside from the nozzle opening 13 in a rectified state with suppressed momentum, rather than being discharged in a forceful turbulent state.

[0074] As a result, according to the dispenser 1 of this embodiment, as shown in Fig. 2, the contents W can be discharged in a straight shape from the nozzle opening 13 to the outside while preventing the contents W from scattering to the surroundings. Therefore, the generation of droplets and the like can be prevented, and the contents W can be discharged without soiling the surroundings.

[0075] Furthermore, since the second partition 192 is disposed between the pair of first partitions 191 and the second partition 192 and the guide rib 200 are integrally formed, the contents W whose momentum has been suppressed by the collision can flow toward the guide rib 200 through the narrow space N (see FIG. 6) between the pair of first partitions 191 and second partitions 192. Therefore, the contents W can be actively supplied to both sides of the guide rib 200, and the contents W can flow toward the nozzle opening 13 while properly aligning with the guide rib 200. This allows the contents W to be discharged to the outside from the nozzle opening 13 in a rectified state with further suppressed momentum.

[0076] Furthermore, since the partition 190 is provided at the connecting portion (bent portion) between the first tip nozzle cylinder 141 and the second tip nozzle cylinder 142, the shape (bent shape) of the connecting portion itself can be used to suppress the momentum of the contents W. Therefore, due to the synergistic effect with the partition 190, the flow velocity of the contents W can be further efficiently reduced and the momentum can be suppressed.

[0077] Furthermore, 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 if the content W contains solid matter such as an abrasive, it can be appropriately dispensed. Therefore, it is possible to use a variety of contents W, 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 an empty space (first space R1), 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 160 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 170 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 180, which is in communication with the inside of the nozzle tube portion 14, protrudes upward more than the first discharge tube 170, 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 180 (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 180 through the upper space R3. This completes the priming process, 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 180, the contents W can be stored in the liquid chamber 11 with most of the air inside the liquid chamber 11 being 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. 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.

[0081] Furthermore, since the opening area S1 of the second discharge tube 180 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 180 is positioned radially inside the support wall 51a, when discharging the contents W, the entire tank portion 10 can be tilted toward the elastic membrane 40 without being affected by the second discharge tube 180 as shown in Figure 2, and the contents W in the second space R2 can be efficiently pushed by pressurizing the liquid chamber 11.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] For example, in the above embodiment, a pair of first partition walls 191 are provided, but one may be provided, or three or more may be provided at intervals in the circumferential direction of the nozzle. When only one first partition wall 191 is provided, it may be formed so as to extend in an arc shape in the circumferential direction of the nozzle. Furthermore, in the above embodiment, the guide rib 200 is formed so as to reach the nozzle opening 13, but for example, the lower end of the guide rib 200 may not reach the nozzle opening 13.

[0086] Furthermore, in the above embodiment, an example was given 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.

[0087] Furthermore, in the above embodiment, an example of the tank 10 having the liquid chamber 11 therein has been described as including an elastically deformable tank body 30 and an elastic membrane 40, but the present invention is not limited to this. For example, the cylindrical tank 10 may function as a cylinder, and a piston provided inside the tank 10 may be moved by the operating member 12 to pressurize the liquid chamber 11. Even in this case, the nozzle tube 14, which has the partition wall 190 and guide rib 200 provided therein, can be used to eject the contents W in a rectified state to the outside while preventing them from scattering to the surroundings.

[0088] 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, Inside the nozzle cylinder portion, a partition wall formed to narrow a flow path area within the nozzle tube portion, against which the contents traveling from the storage chamber toward the nozzle opening collide; a guide rib that is disposed closer to the nozzle opening than the partition wall and that guides the contents after colliding with the partition wall to the nozzle opening, the partition wall is formed to protrude from the inner surface of the nozzle cylindrical portion and includes a pair of main partition walls provided opposite to each other across at least a nozzle axis, the guide rib is formed to protrude from an inner surface of the nozzle cylindrical portion, to extend continuously along the nozzle cylindrical portion, and to be disposed between the pair of main partition walls when viewed from a direction along the nozzle axis. <2> <1> In the dispenser described in the partition wall is formed to protrude from the inner surface of the nozzle cylindrical portion and has a sub-partition wall disposed between the pair of main partition walls, The guide rib is formed integrally with the sub-partition wall and extends continuously from the sub-partition wall toward the nozzle opening. <3> <1> or <2> In the dispenser described in The nozzle cylinder portion is a first nozzle cylinder formed to extend from the tank portion toward a side of the tank portion; a second nozzle cylinder extending downward from the tip end of the first nozzle cylinder and having the nozzle port at its tip end, the partition wall is provided inside a connecting portion between the first nozzle cylinder and the second nozzle cylinder, The discharger, wherein the guide rib is provided inside the second nozzle cylinder. <4> <1> from <3> In the dispenser according to any one of the above items, The tank portion is a tank 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; an elastic membrane integrally molded with the side wall portion so as to surround the side wall portion from the outside in the radial direction. [Explanation of symbols]

[0089] O1…Container axis (center axis) O2...Nozzle axis 1...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 16...Suction valve 17...Discharge valve 30...Tank body 40...Elastic membrane 141...First tip nozzle tube (first nozzle tube) 142...Second tip nozzle tube (second nozzle tube) 190...Bulkhead 191…1st bulkhead (main bulkhead) 192…Second partition wall (sub partition wall) 200...Guide rib

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, Inside the nozzle cylinder portion, a partition wall formed to narrow a flow path area within the nozzle tube portion, against which the contents traveling from the storage chamber toward the nozzle opening collide; a guide rib that is disposed closer to the nozzle opening than the partition wall and that guides the contents after colliding with the partition wall to the nozzle opening, the partition wall is formed to protrude from the inner surface of the nozzle cylindrical portion and includes a pair of main partition walls provided opposite to each other across at least a nozzle axis, the guide rib is formed to protrude from an inner surface of the nozzle cylindrical portion, to extend continuously along the nozzle cylindrical portion, and to be disposed between the pair of main partition walls when viewed from a direction along the nozzle axis.

2. The dispenser of claim 1 , the partition wall is formed to protrude from the inner surface of the nozzle cylindrical portion and has a sub-partition wall disposed between the pair of main partition walls, The guide rib is formed integrally with the sub-partition wall and extends continuously from the sub-partition wall toward the nozzle opening.

3. The dispenser according to claim 1 or 2, The nozzle cylinder portion is a first nozzle cylinder formed to extend from the tank portion toward a side of the tank portion; a second nozzle cylinder extending downward from a tip end of the first nozzle cylinder and having the nozzle port at a tip end thereof, the partition wall is provided inside a connection portion between the first nozzle cylinder and the second nozzle cylinder, The discharger, wherein the guide rib is provided inside the second nozzle cylinder.

4. The dispenser according to claim 1 or 2, The tank portion is a tank 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; an elastic membrane integrally molded with the side wall portion so as to surround the side wall portion from the outside in the radial direction.

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