Ejector

Abstract

The goal is to increase the amount of contents dispensed with a single operation of the trigger lever, while also ensuring a smooth and uninterrupted discharge. [Solution] The pump mechanism 3 comprises a first cylinder 20 whose interior is a first storage space 81, a second cylinder 30 whose interior is a second storage space 82 with a smaller internal volume than the first storage space, a first piston 50 that is movable relative to the stem 2 in the vertical direction, a second piston 60 that moves in conjunction with the vertical movement of the stem, a first coil spring 50 that closes the inside of the stem via the first piston, and a valve body 120 that opens when the pressure in the lower space 81a becomes higher than the pressure in the upper space 81b, allowing communication between the lower space and the upper space. The first piston moves downward while closing the inside of the stem, and also moves downward so as to move away from the stem when the valve body opens, opening the inside of the stem, and provides a discharger 1 that moves downward with the stem while maintaining the open state.

Description

[Technical Field]

[0001] The present invention relates to a discharge device. [Background Art]

[0002] Conventionally, discharge devices that discharge content by operating a rearward-facing trigger lever have been known (see, for example, Patent Document 1 below). This discharge device includes: a stem provided movably downward in an upwardly biased state; a discharge head attached to the upper end of the stem and formed with a discharge hole for discharging the content; a trigger lever for pressing down the discharge head; a cylindrical piston interlocked with the stem; and a cylinder in which the piston is accommodated slidably in the up-down direction. According to this discharge device, by operating the trigger lever rearward, the piston can be moved downward together with the stem, and the content in the cylinder pressurized by the piston can be discharged to the outside from the discharge hole through the inside of the stem. [Prior Art Literature] [Patent Literature]

[0003] [Patent Document 1] Japanese Unexamined Patent Application Publication No. 2017-13824 [Summary of the Invention] [Problem to be Solved by the Invention]

[0004] In this type of discharge device, there are demands for discharging (applying and adhering) the content over a wider range and for extending the discharge time of the content. In order to meet these demands, it is required to increase the discharge amount of the content per single operation of the trigger lever, and to continuously discharge the content without interruption, among other requirements. However, conventional discharge devices cannot meet these demands, and there is room for improvement.

[0005] This invention has been made in view of these circumstances, and its purpose is to provide a dispenser that can increase the amount of contents dispensed while dispensing them in a way that is less likely to be interrupted, with a single operation of the trigger lever. [Means for solving the problem]

[0006] (1) The discharger according to the present invention comprises a pump mechanism attached to the mouth of a container body containing contents, having a cylindrical stem disposed to be movable downward in an upward biased state, a discharge head attached to the upper end of the stem having a discharge hole that communicates with the inside of the stem and opens toward the front, and a trigger lever combined with the pump mechanism that pushes down the discharge head when operated toward the rear, wherein the pump mechanism comprises a first cylinder whose interior is a first storage space that communicates with the inside of the container body, a second cylinder disposed above the first cylinder and formed with an inner diameter smaller than the inner diameter of the first cylinder, whose interior communicates with the first storage space and has an internal volume smaller than the first storage space, and a first pump slidably housed in the first cylinder in the vertical direction and movable relative to the stem in the vertical direction The device comprises: a second piston housed vertically slidably within the second cylinder and moving in conjunction with the vertical movement of the stem; a biasing member that biases the first piston upward, thereby closing the inside of the stem via the first piston; and a valve body that opens when the pressure in the lower space of the first storage space below the first piston becomes higher than the pressure in the upper space above the first piston, allowing communication between the lower space and the upper space. The stem extends below the second piston and communicates with the first and second storage spaces. The first piston moves downward while closing the inside of the stem, and when the valve body opens, it moves downward so as to move away from the stem, opening the inside of the stem, and moves downward with the stem while maintaining the open state.

[0007] According to the discharger of the present invention, by operating the trigger lever towards the rear, the discharge head can be pushed down against the upward bias of the stem. This activates the pump mechanism, allowing the contents to be discharged from the discharge port. Specifically, by pushing down the discharge head, the stem is moved downward, which in turn moves the first and second pistons downward, pressurizing the first and second storage spaces, respectively. At this time, in the initial stage of pushing down the discharge head, the first piston is biased upward by the biasing member, so the first piston can be moved downward while the stem remains closed. As the first piston moves further downward, the lower space in the first storage space is pressurized, and the pressure in the lower space becomes higher than the pressure in the upper space. This allows the valve body to open, and the contents of the lower space can be supplied to the upper space. This increases the pressure in the upper space, allowing the first piston to move downward so that it moves away from the stem. This opens the stem, allowing the contents of the pressurized second storage space and the pressurized contents of the first storage space to be guided through the stem to the discharge hole and discharged to the outside.

[0008] Furthermore, by further pressing down the discharge head, the valve body can be kept open and the stem can be kept open while the first and second pistons are moved downward. This allows the contents of the second storage space and the first storage space to be discharged through the discharge port under pressure. In particular, by utilizing the valve body and the first piston, the stem can be closed until the pressure in the upper space increases, allowing the contents to be discharged under pressure (accumulated pressure). This enables discharge methods such as misting. Therefore, it can be used in a variety of ways depending on the application, resulting in a highly convenient discharge device. Furthermore, when discharging the contents as described above, the contents are discharged through the discharge hole, but since the contents are supplied from the lower space to the upper space, the contents can be stored in the upper space and the second storage space once the trigger lever has been moved backward. In addition, the valve can be closed to block communication between the lower space and the upper space.

[0009] When the trigger lever is released, the biasing member forces the first piston upward. This pressurizes the upper space and the second storage space. Therefore, the first piston, stem, and second piston can be moved upward while maintaining an open state inside the stem. In particular, the upward movement of the first piston and the second piston reduces the internal volume of the upper space while increasing the internal volume of the second storage space. However, since the inner diameter of the second cylinder is smaller than that of the first cylinder, a difference in internal volume occurs. Therefore, by utilizing this difference in internal volume, the contents of the upper space can be discharged to the outside through the discharge hole while simultaneously flowing into the second storage space. Therefore, even after releasing the trigger lever, the contents can continue to be ejected while the trigger lever is being returned to its original position.

[0010] As a result, a single operation of the trigger lever can increase the amount of contents dispensed while minimizing interruptions in the discharge process. Furthermore, the contents can be dispensed under pressure (accumulated pressure). Moreover, since the contents can be pressurized on the pump mechanism side, there is no need to equip the discharge head with a pressure accumulation mechanism, for example. Therefore, the discharge head can be made simpler, reducing the number of parts and leading to reductions in parts costs and manufacturing costs. Furthermore, since the number of parts can be reduced, it is also environmentally friendly.

[0011] (2) The valve body is provided on the first piston and has an annular elastic valve that slides against the inner surface of the first cylinder, and the elastic valve may be switchable between a closed state that blocks communication between the lower space and the upper space and an open state that allows communication between the lower space and the upper space by elastically deforming to reduce its diameter when the pressure in the lower space becomes higher than the pressure in the upper space.

[0012] In this case, the elastic valve can be switched between a closed and open state in conjunction with the up-and-down movement of the first piston, making it easier to properly accumulate and discharge the contents. Therefore, the reliability of the discharger's operation can be improved. Furthermore, since the valve body can be made to function with a simple configuration that only requires the elastic valve to be installed on the first piston, the overall structure can be simplified.

[0013] (3) The first piston comprises a piston body that can open the inlet of the stem from below, and a guide shaft that extends upward from the piston body and is inserted into the stem from below, wherein when the valve body opens, the piston body may move downward from the stem to open the inlet while maintaining the state in which the guide shaft is inserted into the stem.

[0014] In this case, the piston body can be used to more effectively close the stem inlet. Furthermore, when the stem inlet is opened, the guide shaft can be kept inserted into the stem, thus narrowing the flow path of the contents from the inlet to the discharge hole. Consequently, the contents can be discharged under even greater pressure. Moreover, when the first piston moves downward relative to the stem, the guide shaft is inserted into the stem, making it easier to stabilize the position of the first piston. Consequently, the first piston can be moved up and down stably and smoothly.

[0015] (4) The first cylinder has an annular partition wall that surrounds the stem radially from the outside while allowing the stem to move vertically, and the partition wall is arranged to separate the first storage space and the second storage space in the vertical direction, and the first storage space and the second storage space may be connected through an annular gap between the inner peripheral edge of the partition wall and the stem.

[0016] In this case, since the partition wall is arranged to separate the first and second storage spaces vertically, when the valve opens and contents are supplied from the lower space to the upper space, the pressure in the upper space can be increased quickly. Therefore, the first piston can be moved downward relative to the stem, and the contents can be discharged in a responsive manner. Furthermore, until the trigger lever returns to its original position, the pressurization of the upper space by the first piston makes it easier to supply the contents into the stem. Therefore, in this respect as well, it is easier to discharge the contents.

[0017] (5) The first cylinder may be provided with a lower valve body that, when the first piston moves downward, blocks communication between the first storage space and the container body, and when the first piston moves upward, allows communication between the first storage space and the container body.

[0018] In this case, when the first piston moves downward due to the operation of the trigger lever towards the rear, the lower valve body closes, blocking communication between the first storage space and the container body, thus allowing for proper discharge of the contents. Furthermore, as the trigger lever returns to its original position, when the lower space becomes negatively pressurized due to the upward movement of the first piston, the lower valve body opens, allowing communication between the first storage space and the container body. Therefore, the contents can be drawn up from the container body into the lower space and stored, preparing for the next discharge. [Effects of the Invention]

[0019] According to the present invention, a discharger can be provided that, through a single operation of the trigger lever, can perform discharge that is less likely to be interrupted midway while increasing the discharge amount of the content. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] [Figure 1] It is a longitudinal sectional view showing an embodiment of the discharger according to the present invention. [Figure 2] It is an enlarged longitudinal sectional view of the periphery of the first cylinder shown in FIG. 1. [Figure 3] It is a longitudinal sectional view showing a state where the first piston and the second piston are moved downward by operating the trigger lever from the state shown in FIG. 2. [Figure 4] It is a longitudinal sectional view showing a state where the first piston and the second piston are further moved downward from the state shown in FIG. 3. [Figure 5] It is a longitudinal sectional view showing a state where the first piston is moved upward from the state shown in FIG. 4. MODE FOR CARRYING OUT THE INVENTION

[0021] Hereinafter, embodiments of the discharger according to the present invention will be described with reference to the drawings. As shown in FIG. 1, the discharger 1 of the present embodiment includes a pump mechanism 3 having a stem 2, a discharge head 5 formed with a discharge hole 4, a mounting cap 6 for mounting the pump mechanism 3 to the mouth portion 11 of a container body 10 that accommodates contents not shown, a support member 7 combined with the pump mechanism 3, and a trigger lever 8 that is rotatably combined with the support member 7 and presses down the discharge head 5 by a rotation operation. Unless otherwise specified, each component of the discharger 1 is a molded article using a synthetic resin material.

[0022] The central axis O of the stem 2 is arranged coaxially with the container axis (central axis) of the container body 10. Hereinafter, along the central axis O, the trigger lever 8 side is defined as upward and the container body 10 side as downward, and the direction along the central axis O is defined as the up-down direction. Furthermore, in a plan view from the up-down direction, the direction intersecting the central axis O is defined as the radial direction, and the direction revolving around the central axis O is defined as the circumferential direction. Furthermore, of the radial directions, one direction that is orthogonal to each other is defined as the front-rear direction L1, and the other direction is defined as the left-right direction L2. Of the front-rear direction L1, the direction in which the discharge hole 4 of the discharge head 5 faces is defined as the front, and the opposite direction is defined as the rear.

[0023] (Attachment cap) The mounting cap 6 is formed in a cylindrical shape that surrounds the mouth 11 of the container body 10 from the radial outside and is attached to the mouth 11 of the container body 10, for example, by screw connection. An annular projection 6a is formed at the upper end of the mounting cap 6, projecting radially inward. The mounting cap 6 is attached to the mouth 11 of the container body 10 with the projection 6a in contact with the first flange portion 24 of the first cylinder 20, which will be described later, from above. As a result, the entire pump mechanism 3 is attached to the mouth 11 of the container body 10 by the mounting cap 6, with an upward locking mechanism preventing it from coming loose. The mounting method of the mounting cap 6 is not limited to screw connections; for example, it may be attached to the mouth 11 of the container body 10 by an undercut fitting.

[0024] (Pump mechanism) As shown in Figures 1 and 2, the pump mechanism 3 includes a cylindrical stem 2 arranged to be movable downward in an upward biased state, a first cylinder 20 communicating with the container body 10, a second cylinder 30 positioned above the first cylinder 20 and communicating with the first cylinder 20, a guide cap 40 combined with the first cylinder 20 and the second cylinder 30, a first piston 50 housed in the first cylinder 20 so as to be slidable in the vertical direction, a second piston 60 housed in the second cylinder 30 so as to be slidable in the vertical direction, a first coil spring (biasing member according to the present invention) 70 that biases the first piston 50 upward, and a ball valve (lower valve body according to the present invention) 71 provided in the first cylinder 20.

[0025] (First cylinder) The first cylinder 20 is formed in a multi-stage cylindrical shape with a diameter that changes in multiple stages from top to bottom, and is arranged coaxially with the central axis O. Specifically, the first cylinder 20 comprises a first upper cylinder cylinder 21, a first intermediate cylinder cylinder 22 positioned below the first upper cylinder cylinder 21 and having a smaller diameter than the first upper cylinder cylinder 21, and a first lower cylinder cylinder 23 positioned below the first intermediate cylinder cylinder 22 and having a tapered cross-section that decreases in diameter as it goes downwards.

[0026] The first upper cylinder 21 is formed in a vertically elongated straight cylindrical shape such that its upper end is located above the mouth 11 of the container body 10 and its lower end extends further into the container body 10 than the mouth 11. The first upper cylinder 21 has a first flange portion 24 that protrudes radially outward. The first flange portion 24 is positioned on the upper opening edge of the mouth 11 of the container body 10 via an annular packing 25 and is sandwiched vertically between the flange portion 24 and the upper opening edge of the mouth 11 of the container body 10 by the projection 6a of the mounting cap 6. As a result, the entire pump mechanism 3, including the first cylinder 20, is attached to the mouth 11 of the container body 10 via the mounting cap 6.

[0027] A first air hole 26 is formed in the portion of the first upper cylinder 21 that is located inside the mouth 11 of the container body 10, and penetrates the first upper cylinder 21 radially. An annular first step portion 27 facing upward is formed in the connection portion between the first upper cylinder 21 and the first intermediate cylinder 22 within the first cylinder 20.

[0028] The first intermediate cylinder cylinder 22 is formed in a straight cylindrical shape extending downward from the first stepped portion 27. At the connection point between the first intermediate cylinder cylinder 22 and the first lower cylinder cylinder 23, an annular second stepped portion 28 is formed within the first cylinder 20, facing upward. The first lower cylinder 23 is formed so that its diameter decreases as it goes downward from the second stage 28. At the lower end of the first lower cylinder 23, a communication hole 23a is formed that connects the inside of the container body 10 and the inside of the first cylinder 20, and also draws the contents into the first cylinder 20.

[0029] A pipe 29 extending downward is integrally formed in the first lower cylinder 23. The upper end of a pipe 9 for drawing up the contents is fitted inside the pipe 29. The lower end opening of the pipe 9 is located near the bottom of the container body 10.

[0030] The internal space of the first cylinder 20, configured as described above, is a first storage space 81 that communicates with the container body 10.

[0031] (Ball valve) The ball valve 71 is positioned seated inside the first lower cylinder barrel 23. A tapered claw portion 72 is formed on the inner circumferential surface of the first lower cylinder barrel 23, projecting radially inward, and is positioned above the ball valve 71. Multiple tapered claw portions 72 are formed, for example, spaced apart in the circumferential direction. However, this is not the only option; for example, the tapered claw portions 72 may be formed in an annular shape. If the tapered claw portions 72 are formed in an annular shape, for example, a vertically elongated slit groove that allows the contents to move may be formed.

[0032] The ball valve 71 closes when the pressure inside the first cylinder 20 rises above the pressure inside the container body 10 as the first piston 50 moves downward (pressurized). This keeps the ball valve 71 seated against the first lower cylinder cylinder 23, blocking communication between the inside of the first cylinder 20 (first storage space 81) and the inside of the container body 10 through the communication hole 23a. On the other hand, the ball valve 71 opens when the pressure inside the first cylinder 20 falls below the pressure inside the container body 10 as the first piston 50 moves upward (depressurized). This causes the ball valve 71 to move upward away from the first lower cylinder cylinder 23, allowing communication between the inside of the first cylinder 20 (first storage space 81) and the inside of the container body 10 through the communication hole 23a.

[0033] Therefore, the ball valve 71 functions as a check valve. The upward movement of the ball valve 71 is restricted by the tapered claw portion 72. However, the lower valve body is not limited to the ball valve 71; for example, a multi-point valve such as a three-point valve or other valve structures may be used.

[0034] (Second cylinder) The second cylinder 30 is arranged coaxially with the central axis O and is assembled to the first cylinder 20 from above, communicating with the inside of the first cylinder 20. The second cylinder 30 includes a fitting cylinder 31 that is tightly fitted inside the upper end of the first upper cylinder cylinder 21, a second cylinder cylinder 32 that extends downward from the lower end of the fitting cylinder 31, a protruding cylinder 33 that extends upward from the upper end of the fitting cylinder 31, and an annular second flange portion 34 that protrudes radially outward from the fitting cylinder 31.

[0035] The second cylinder 32 is formed as a straight cylinder extending downward from the lower end of the fitting cylinder 31 to below the first air hole 26. In particular, the second cylinder 32 is formed with a smaller diameter than the first upper cylinder 21 so that there is an annular gap between it and the first upper cylinder 21. Therefore, the inner diameter of the second cylinder 30 (inner diameter of the second cylinder 32) is formed to be smaller than the inner diameter of the first cylinder 20 (inner diameter of the first upper cylinder 21). In the portion of the second cylinder 32 located above the first air hole 26, a second air hole 35 is formed, which penetrates the second cylinder 32 radially.

[0036] The fitting cylinder 31 is tightly fitted inside the first upper cylinder cylinder 21 with the second flange portion 34 in contact with the upper end opening edge of the first upper cylinder cylinder 21 from above. As a result, the entire second cylinder 30 is integrally assembled with the first cylinder 20.

[0037] As described above, the internal space of the second cylinder 30 is smaller in volume than the first storage space 81 and is a second storage space 82 that communicates with the first storage space 81.

[0038] (Partition member) The first cylinder 20 and the second cylinder 30 described above are further combined via a partition member 90 provided inside the first cylinder 20. The partition member 90 comprises an inner cylinder 91 that is tightly fitted inside the first upper cylinder 21, an annular partition wall 92 that protrudes radially inward from the upper end side of the inner cylinder 91, and a connecting cylinder 93 that extends upward from the partition wall 92.

[0039] The lower end of the inner cylinder 91 is in contact with the first stepped portion 27 formed on the first cylinder 20 from above. As a result, the entire partition member 90 is integrally assembled with respect to the first cylinder 20 in a vertically positioned manner. The upper end of the inner cylinder 91 is located below the first air hole 26 and surrounds the lower end of the second cylinder 32 from the radial outside.

[0040] The partition wall 92 is formed to protrude radially inward from the second cylinder 32, while contacting the second cylinder 32 from below. Furthermore, the partition wall 92 surrounds the piston guide 105, which constitutes the stem 2 and will be described later, from the radial outside, while allowing the piston guide 105 to move vertically. As a result, the first storage space 81 and the second storage space 82 are in communication through the annular gap between the inner peripheral edge of the partition wall 92 and the piston guide 105. In particular, the partition wall 92 is positioned to connect the first storage space 81 and the second storage space 82 while also separating them vertically.

[0041] The connecting cylinder 93 surrounds the lower end of the second cylinder 32 from the inside in the radial direction and is fitted inside the second cylinder 32. Therefore, the lower end of the second cylinder 32 is sandwiched radially between the inner cylinder 91 and the connecting cylinder 93. In this way, the first cylinder 20 and the second cylinder 30 are further combined via the partitioning member 90. The first air hole 26 and the second air hole 35 are always in communication with each other via the partitioning member 90.

[0042] (Guide cap) As shown in Figure 1, the guide cap 40 is formed in a top-cylindrical shape and is assembled to the first cylinder 20 and the second cylinder 30 in a manner coaxial with the central axis O. The guide cap 40 comprises a mounting cylinder 41 that surrounds the upper end of the first upper cylinder barrel 21 (the portion located above the first flange portion 24) and the protruding cylinder 33 of the second cylinder 30 from the radially outer side, an annular cap top wall 42 that protrudes radially inward from the upper end of the mounting cylinder 41, and an upper guide cylinder 43 that protrudes upward from the inner peripheral edge of the cap top wall 42.

[0043] The mounting cylinder 41 is mounted to the first upper cylinder cylinder 21 of the first cylinder 20, for example by an undercut fitting, while being prevented from rotating relative to the protruding cylinder 33 of the second cylinder 30. As a result, the entire guide cap 40 is integrally assembled to the pump mechanism 3 via the first cylinder 20 and the second cylinder 30. In particular, the entire guide cap 40 is assembled to the pump mechanism 3 while being prevented from rotating around the central axis O.

[0044] The cap top wall 42 has a seal cylinder 44 and a lower guide cylinder 45 that extend downward. The seal cylinder 44 is fitted inside the protruding cylinder 33 of the second cylinder 30. The lower guide cylinder 45 is formed to extend downward from the inner peripheral edge of the cap top wall 42 and is formed to have the same inner diameter as the upper guide cylinder 43. The upper guide tube 43 and the lower guide tube 45 surround the stem body 100, which will be described later, from the radial outside, while maintaining a slight gap between them and the stem body 100 that constitutes the stem 2. As a result, the upper guide tube 43 and the lower guide tube 45 can guide the entire stem 2 and support the smooth vertical movement of the stem 2. Furthermore, an annular packing 46 is positioned between the lower end of the seal cylinder 44 and the upper end of the fitting cylinder 31 of the second cylinder 30, sandwiched between them from above and below.

[0045] (Stem) The stem 2 comprises a cylindrical stem body 100 positioned inside the guide cap 40 and a cylindrical piston guide 105 assembled to the stem body 100 from below, and is arranged coaxially with the central axis O. In the illustrated example, the stem body 100 and the piston guide 105 are formed separately, but this is not the only way in which they can be formed as a single unit.

[0046] The stem body 100 is positioned inside the upper guide cylinder 43 and lower guide cylinder 45 of the guide cap 40. In the standby state before the discharge head 5 is pressed down, the stem body 100 is positioned so that its upper end protrudes above the guide cap 40. The position of the discharge head 5 and stem 2 in the standby state is considered to be the highest position.

[0047] The piston guide 105 is positioned below the stem body 100, and its upper end is fitted inside the stem body 100. As a result, the piston guide 105 is integrally assembled with the stem body 100 and is also movable vertically in conjunction with the stem body 100. The piston guide 105 is formed to extend downward from the second cylinder 30 and also extends downward from the partition wall 92 of the partition member 90. The lower end opening of the piston guide 105 functions as an inlet 106 for the stem 2. As a result, the inside of the stem 2 (inside the stem body 100 and inside the piston guide 105) can communicate with the inside of the first storage space 81 and the second storage space 82 through the inlet 106.

[0048] The portion of the piston guide 105 located below the packing 25 has an annular connecting piece 107 that protrudes radially outward. A second coil spring 108 is positioned coaxially with the central axis O between the connecting piece 107 and the partition wall 92 of the partition member 90, for example, in a state of compression in the vertical direction. The second coil spring 108 is positioned to surround the piston guide 105 from the radial outside. The upper end of the second coil spring 108 contacts the connecting piece 107 from below, and the lower end contacts the partition wall 92 from above. As a result, the entire stem 2, including the stem body 100 and the piston guide 105, is biased upward by the elastic restoring force of the second coil spring 108.

[0049] (Second piston) The second piston 60 is housed within the second cylinder 30 so as to be slidable in the vertical direction and is movable in the vertical direction in conjunction with the stem 2. Specifically, the second piston 60 is integrally formed with the outer peripheral edge of the connecting piece 107 and is formed in a cylindrical shape that surrounds the piston guide 105 from the radial outside. Therefore, the second piston 60 is arranged coaxially with the central axis O. The upper end of the second piston 60 contacts the packing 46 from below, and the lower end is in close sliding contact with the inner circumferential surface of the second cylinder 32. As a result, a predetermined sealing performance is ensured between the second piston 60 and the inner circumferential surface of the second cylinder 32.

[0050] The second piston 60, configured in this way, is integrally formed with the piston guide 105 via a connecting piece 107, and is therefore able to move vertically in conjunction with the stem 2. In the standby state before the discharge head 5 is pushed down, the upper end of the second piston 60 is in contact with the packing 46 from below. As a result, the entire discharge head 5 and stem 2 are restricted from moving any further upward and are positioned at their highest position. Furthermore, when in the standby state, the second piston 60 closes the second air hole 35 formed in the second cylinder barrel 32 from the radially inward side.

[0051] (First piston, first coil spring) The first piston 50 is housed within the first cylinder 20 so as to be slidable in the vertical direction, while being positioned coaxially with the central axis O, and is also movable in the vertical direction relative to the stem 2, which includes the piston guide 105. The first piston 50 comprises a piston body 110 positioned below the piston guide 105, a guide shaft 111 extending upward from the piston body 110 and inserted into the piston guide 105 from below, an annular piston wall 112 projecting radially outward from the piston body 110, and an annular elastic valve 113 formed to project upward from the outer peripheral edge of the piston wall 112.

[0052] The piston body 110 is formed in a cylindrical shape that extends vertically and is designed to block the inlet 106 of the piston guide 105 so that it can be opened from below. The guide shaft 111 is formed in a cylindrical shape with an outer diameter smaller than the inner diameter of the piston guide 105, and is inserted into the piston guide 105 with a small annular gap between it and the inner circumferential surface of the piston guide 105. In particular, the guide shaft 111 is inserted into the piston guide 105 with a sufficient amount of insertion. Therefore, as shown in Figure 3, when the first piston 50 moves downward relative to the stem 2 including the piston guide 105, it is possible to maintain the state in which the guide shaft 111 is inserted into the piston guide 105.

[0053] As shown in Figure 2, the elastic valve 113 is formed to expand in diameter from the outer peripheral edge of the piston wall 112 upwards and is in sliding contact with the inner circumferential surface of the first cylinder 20. In the illustrated example, the elastic valve 113 is in sliding contact with the inner circumferential surface of the inner cylinder 91 fitted inside the first upper cylinder cylinder 21.

[0054] The first piston 50, configured in this way, is biased upward by a first coil spring 70. The first coil spring 70 is positioned below the first piston 50 within the first cylinder 20 and is positioned in a vertically compressed state between the piston wall 112 and the second stage 28. The first coil spring 70 is positioned coaxially with the central axis O, with its upper end in contact with the piston wall 112 from below and its lower end in contact with the second stage 28 from above. As a result, the first piston 50 is biased upward by the elastic restoring force (biasing force) of the first coil spring 70, and the piston body 110 closes the inlet 106 of the piston guide 105. In other words, the first coil spring 70 closes the inside of the stem 2 via the first piston 50.

[0055] (valve body) Since the first piston 50 described above is located inside the first cylinder 20, the inside of the first cylinder 20 is divided into upper and lower sections by the first piston 50. In this embodiment, the space located below the first piston 50 in the first storage space 81 is defined as the lower space 81a, and the space located above the first piston 50 is defined as the upper space 81b.

[0056] The pump mechanism 3 includes a valve body 120 that opens when the pressure in the lower space 81a becomes higher than the pressure in the upper space 81b, allowing communication between the lower space 81a and the upper space 81b. The valve body 120 of this embodiment has an elastic valve 113 provided on the first piston 50. As shown in Figure 2, the elastic valve 113 is switchable between an open state that blocks communication between the lower space 81a and the upper space 81b, and an open state that allows communication between the lower space 81a and the upper space 81b by elastically deforming to reduce its diameter as shown by arrow F1 in Figure 3 when the pressure in the lower space 81a becomes higher than the pressure in the upper space 81b.

[0057] Therefore, when the piston guide 105 moves downward from the state shown in Figure 2, the first piston 50 moves downward while keeping the inside of the piston guide 105 closed, and when the elastic valve 113 (valve body 120) opens along the way, it moves downward away from the piston guide 105 as shown in Figure 3, thereby opening the inside of the piston guide 105. Specifically, when the elastic valve 113 (valve body 120) opens, the piston body 110 moves downward from the piston guide 105 while maintaining the state in which the guide shaft 111 is inserted into the piston guide 105, thereby opening the inlet 106. From this point onward, the first piston 50 moves downward along with the piston guide 105, while maintaining the open state of the inlet 106, as shown in Figure 4.

[0058] (Dispensing head) As shown in Figure 1, the discharge head 5 is integrally formed with the upper end of the stem body 100 and includes a first discharge nozzle 130 extending forward from the upper end of the stem body 100 and a second discharge nozzle 131 combined with the first discharge nozzle 130 from the front. The first discharge nozzle 130 does not need to be integrally formed with the upper end of the stem body 100; for example, it may be formed separately from the stem body 100 and then combined with the upper end of the stem body 100.

[0059] The first discharge nozzle 130 is formed in a closed-bottom cylindrical shape with a closed rear end and an open front end, and communicates with the inside of the stem body 100. In the illustrated example, the first discharge nozzle 130 is formed to extend diagonally upward and forward, and to protrude forward from the mounting cap 6.

[0060] The second discharge nozzle 131 is formed in a cylindrical shape and is fitted to the front end of the first discharge nozzle 130 from the front. Inside the second discharge nozzle 131, a nozzle shaft portion 132 is disposed along the second discharge nozzle 131. A flow channel groove is formed between the outer circumferential surface of the nozzle shaft portion 132 and the inner circumferential surface of the second discharge nozzle 131 for the contents to flow through. Furthermore, a nozzle tip 133 is attached to the front end of the nozzle shaft portion 132, with a discharge hole 4 formed therein for discharging the contents. The discharge hole 4 communicates with the flow channel groove via a spin groove formed in the nozzle tip 133 and a flow passage formed between the nozzle shaft portion 132 and the nozzle tip 133.

[0061] A cylindrical shaft portion 135 is provided projecting outward along the left-right direction L2 from the outer surface of the portion of the first discharge nozzle 130 located above the stem body 100. The shaft portion 135 is formed such that, in a side view from the left-right direction L2, the central axis O passes through its center.

[0062] (Support member) The support member 7 is a member that supports the trigger lever 8 and is combined with the pump mechanism 3 via the guide cap 40.

[0063] The support member 7 is formed to extend diagonally upward and rearward from the rear of the guide cap 40. As a result, the upper end of the support member 7 is positioned behind the discharge head 5, with a gap between them. Specifically, the support member 7 is integrally formed with the mounting cylinder 41, the cap top wall 42, and the upper guide cylinder 43 of the guide cap 40, and is formed to extend diagonally upward and rearward from the mounting cylinder 41, the cap top wall 42, and the upper guide cylinder 43. The support member 7 comprises a pair of side wall portions 140 arranged at a distance L2 in the left-right direction, and a rear wall portion 141 that connects the rear end edges of the side wall portions 140 in the left-right direction L2.

[0064] A cylindrical rotating shaft portion 142 is provided projecting outward along the left-right direction L2 from the upper ends of the pair of side wall portions 140. A virtual axis passing through the center of the rotating shaft portion 142 and extending in the left-right direction L2 functions as the rotation axis M of the trigger lever 8.

[0065] (Trigger lever) As shown in Figure 1, the trigger lever 8 extends forward from the support member 7, straddling the stem 2, and is also rotatably mounted to the support member 7, functioning as an operating member that pushes down the discharge head 5 when rotated backward. In the discharger 1 of this embodiment, the discharge head 5 can be pushed down by rotating the trigger lever 8 shown in Figure 1 towards the rear around the rotation axis M. This makes it possible to discharge the contents through the discharge hole 4.

[0066] The trigger lever 8 comprises a top plate portion 150 that covers the discharge head 5 from above, a front plate portion 151 that extends diagonally downward and forward from the front edge of the top plate portion 150, and a pair of side plate portions 152 that extend downward from the left and right edges of the top plate portion 150 and the front plate portion 151 and face each other in the left-right direction L2. The space enclosed by the top plate 150 and the pair of side plates 152 is an internal space that opens downwards. Part of the discharge head 5 is located within this internal space. Therefore, the pair of side plates 152 are positioned to sandwich part of the discharge head 5 from the left and right directions L2.

[0067] The top plate portion 150 is formed to curve smoothly upwards. The rear end of the top plate portion 150 contacts the upper opening edge of the rear wall portion 141 of the support member 7 from above. As a result, the trigger lever 8 is positioned in a state where further upward and forward rotation around the rotation axis M is restricted.

[0068] A through-hole 153 is formed in the front portion of the top plate 150, penetrating it in the vertical and front-to-back directions L1. The through-hole 153 is formed in the central part of the top plate 150 in the left-to-right direction L2. As a result, the front portion of the top plate 150 is divided into two branches in the left-to-right direction L2. The first discharge nozzle 130 and the second discharge nozzle 131 are inserted into the through-hole 153. The second discharge nozzle 131 protrudes forward from the top plate portion 150 through the through-hole 153. This allows the contents to be discharged to the outside through the discharge hole 4 without being affected by the trigger lever 8.

[0069] The front panel 151 extends diagonally downward and forward from the front edge of the top panel 150, such that its lower end is positioned at a distance in front of the mounting cap 6. The front surface of the front panel 151 is designed as a finger rest for gripping the fingertips.

[0070] The pair of side plates 152 are positioned to sandwich a part of the discharge head 5 and the upper end of the support member 7 from the left-right direction L2. An axial hole 154 is formed on the inner surface of the rear side of the pair of side plates 152 to accommodate the rotating shaft portion 142 formed on the upper end of the support member 7. As a result, the trigger lever 8 is supported by the support member 7 so as to be rotatable around the rotation axis M.

[0071] Furthermore, an axial hole 155 is formed on the inner surface of the pair of side plates 152, into which the shaft portion 135 formed on the discharge nozzle fits. This allows the trigger lever 8 and the discharge head 5 to operate in conjunction with each other. Therefore, when the trigger lever 8 is operated towards the rear, it is possible to push down the discharge head 5 and the stem 2 via the shaft portion 135.

[0072] Furthermore, a stopper 160 is removably fitted to the portion of the stem body 100 located above the mounting cap 6. The stopper 160 is positioned between the first discharge nozzle 130 and the mounting cap 6 and restricts the downward operation of the discharge head 5. As a result, when the stopper 160 is attached, the rotational operation of the trigger lever 8 toward the rear is restricted, and the discharge head 5 is positioned in a standby state at its highest position (standby position).

[0073] (Function of the dispensing device) Next, we will explain the case in which the contents are discharged using the discharger 1 configured as described above. Initially, as shown in Figure 1, when the stopper 160 is installed, the operation of the trigger lever 8 toward the rear is restricted, making it impossible to push down the discharge head 5. Therefore, the pump mechanism 3 does not operate and the contents are not discharged. Consequently, even if an unintended external force is applied to the trigger lever 8, for example, during product transport or product display, malfunction of the pump mechanism 3 can be prevented.

[0074] To discharge the contents, after removing the stopper 160, the trigger lever 8 is operated backward as shown by arrow F2 in Figure 1, thereby pushing down the discharge head 5 against the upward bias of the stem 2 caused by the second coil spring 108. This activates the pump mechanism 3, allowing the contents to be discharged from the discharge hole 4.

[0075] Specifically, by pressing down the discharge head 5, the stem 2 (stem body 100 and piston guide 105) is moved downward, which allows the first piston 50 and the second piston 60 shown in Figure 2 to be moved downward, thereby pressurizing the first storage space 81 and the second storage space 82, respectively. At this time, in the initial stage of pressing down the discharge head 5, the first coil spring 70 biases the first piston 50 upward, so the first piston 50 can be moved downward while keeping the piston guide 105 closed.

[0076] As the first piston 50 moves further downward, the lower space 81a is pressurized, as shown in Figure 3, and the pressure in the lower space 81a becomes higher than the pressure in the upper space 81b. This causes the elastic valve 113 of the first piston 50 to be elastically deformed to reduce its diameter and open, as shown by arrow F1. Therefore, as shown by arrow F3, the contents of the lower space 81a can be supplied to the upper space 81b through the gap between the elastic valve 113 and the first cylinder 20.

[0077] This increases the pressure in the upper space 81b, allowing the first piston 50 to move downward so that it is separated from the piston guide 105. This opens the inlet 106 of the piston guide 105, allowing the contents of the pressurized second storage space 82 and the pressurized contents of the first storage space 81 to be guided through the stem 2 (inside the piston guide 105 and inside the piston body 110) to the discharge hole 4, and discharged to the outside from the discharge hole 4.

[0078] Furthermore, by further pushing down the discharge head 5, the first piston 50 and the second piston 60 can be moved downward while maintaining the open state of the elastic valve 113 and the open state within the stem 2, as shown in Figure 4. Thus, the contents of the second storage space 82 and the contents of the first storage space 81 can be discharged through the discharge hole 4 while being pressurized. Furthermore, the first piston 50 pressurizes the lower space 81a while moving downward relative to the stem 2, gradually moving away from the stem 2, as shown in Figures 3 and 4, due to the pressure difference between the pressure in the lower space 81a and the pressure in the upper space 81b.

[0079] In particular, by utilizing the elastic valve 113 and the first piston 50, the inside of the stem 2 can be closed until the pressure in the upper space 81b increases, allowing the contents to be discharged under pressurized (pressurized) conditions. This enables discharge methods such as spraying in a mist. Therefore, the discharger 1 can be used in a variety of ways depending on the application, resulting in a highly convenient device.

[0080] As shown in Figure 4, the second piston 60 contacts the connecting cylinder 93 of the partition member 90 from above, thereby restricting further downward movement of the discharge head 5. In other words, the position where the second piston 60 contacts the connecting cylinder 93 of the partition member 90 is the lowest position of the discharge head 5 and stem 2.

[0081] Furthermore, when the contents are discharged, they are discharged through the discharge hole 4, but the contents are supplied from the lower space 81a to the upper space 81b, so when the trigger lever 8 has finished being operated towards the rear, the contents can be stored in the upper space 81b and the second storage space 82. In addition, the elastic valve 113 can be restored and deformed to close, thereby blocking communication between the lower space 81a and the upper space 81b.

[0082] Next, when the trigger lever 8 is released, as shown in Figure 5, the elastic valve 113 is brought into contact with the inner surface of the inner cylinder 91, and the first piston 50 can be moved upward as indicated by arrow F4 by the biasing force of the elastic restoring force of the first coil spring 70. This allows the first piston 50 to be moved upward relative to the piston guide 105 while pressurizing the upper space 81b and the second storage space 82. When the pressure in the upper space 81b and the second storage space 82 rises above a certain level, the second piston 60 and the stem 2 can be moved upward. This allows the first piston 50, the stem 2, and the second piston 60 to be moved upward while maintaining the open state of the inlet 106 of the piston guide 105.

[0083] In particular, the upward movement of the first piston 50 and the second piston 60 reduces the internal volume of the upper space 81b while increasing the internal volume of the second storage space 82. However, since the inner diameter of the second cylinder 30 is smaller than that of the first cylinder 20, a difference in internal volume occurs. Therefore, by utilizing this difference in internal volume, the contents of the upper space 81b can be flowed into the second storage space 82 while simultaneously being discharged to the outside through the stem 2 and the discharge hole 4. Therefore, even after releasing the operation of the trigger lever 8, the contents can continue to be ejected while the trigger lever 8 is being returned to its original position.

[0084] Based on the above, the dispenser 1 of this embodiment allows for increasing the amount of contents dispensed with a single operation of the trigger lever 8, while also being less likely to interrupt the dispensing process. Furthermore, the contents can be dispensed under pressure (accumulated pressure). Furthermore, since the contents can be pressurized on the pump mechanism 3 side, there is no need to equip the discharge head 5 side with a pressurization mechanism, for example. Therefore, the discharge head 5 can be made with a simpler configuration, reducing the number of parts and leading to a reduction in parts costs and manufacturing costs. Moreover, since the number of parts can be reduced, it is also environmentally friendly.

[0085] Furthermore, since the elastic valve 113 can be switched between a closed state and an open state in conjunction with the up-and-down movement of the first piston 50, it is easier to properly accumulate and discharge the contents. Therefore, the reliability of the operation of the discharger 1 can be improved. Moreover, since the valve body 120 can be made to function with a simple configuration of just providing the elastic valve 113 on the first piston 50, the configuration can be simplified.

[0086] Furthermore, as shown in Figure 4, when the inlet 106 of the piston guide 105 is opened, the guide shaft 111 can be kept inserted into the piston guide 105, thus narrowing the flow path of the contents from the inlet 106 to the discharge hole 4. Therefore, the contents can be discharged under further pressure. Moreover, when the first piston 50 moves downward relative to the piston guide 105, the guide shaft 111 is inserted into the piston guide 105, making it easier to stabilize the position of the first piston 50. Therefore, the first piston 50 can be moved up and down stably and smoothly.

[0087] Furthermore, since the partition member 90 has a partition wall 92 that divides the first storage space 81 and the second storage space 82 in the vertical direction, when the elastic valve 113 opens and contents are supplied from the lower space 81a to the upper space 81b, it is easy to quickly increase the pressure in the upper space 81b. Therefore, it is easy to move the first piston 50 downward relative to the stem 2 and discharge the contents in a responsive manner. Furthermore, while the trigger lever 8 is returning to its original position, the pressurization in the upper space 81b by the first piston 50 facilitates the supply of contents into the stem 2. Therefore, in this respect as well, it is easier to discharge the contents.

[0088] Furthermore, when the first piston 50 moves downward due to the operation of the trigger lever 8 towards the rear, the ball valve 71 closes, blocking communication between the first storage space 81 and the container body 10, thereby enabling proper discharge of the contents. Moreover, when the trigger lever 8 returns to its original position, the upward movement of the first piston 50 creates negative pressure in the lower space 81a, causing the ball valve 71 to open and allowing communication between the first storage space 81 and the container body 10. Therefore, the contents can be drawn up from the container body 10 into the lower space 81a and stored, preparing for the next discharge.

[0089] As shown in Figure 4, after the contents are dispensed, the inside of the container body 10 communicates with the outside through the first air hole 26 and the second air hole 35. Therefore, when the pressure inside the container body 10 decreases due to the suction of contents from inside the container body 10, air replacement can be properly performed.

[0090] Although 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. 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. Embodiments and their modifications include, for example, those that can be easily imagined by those skilled in the art, those that are substantially the same, and those that are equivalent.

[0091] For example, in the above embodiment, the support member 7 is integrally formed with the guide cap 40, but this is not limited to this case, and it may be integrally formed with the mounting cap 6, for example. Furthermore, in the above embodiment, the discharge head 5 is configured to include a nozzle tip 133, but the nozzle tip 133 is not essential and may be omitted.

[0092] Furthermore, although the above embodiment was described using the example of fitting a partition member 90 having a partition wall 92 inside the first upper cylinder barrel 21 of the first cylinder 20, the partition member 90 is not essential. For example, the partition wall 92 alone may be integrally formed with the first upper cylinder barrel 21.

[0093] Furthermore, in the above embodiment, the elastic valve 113 of the first piston 50 was made to function as a valve body 120, but the invention is not limited to this case. For example, a valve body may be provided on the piston wall 112 that opens when the pressure in the lower space 81a becomes higher than the pressure in the upper space 81b, allowing communication between the lower space 81a and the upper space 81b.

[0094] Furthermore, the present invention includes the following embodiments. <1> A pump mechanism having a cylindrical stem that is arranged to be movable downward while biased upward, and which is attached to the mouth of the container body that holds the contents, A discharge head is attached to the upper end of the stem, and has a discharge hole that communicates with the inside of the stem and opens forward, The pump mechanism is equipped with a trigger lever that, when operated towards the rear, pushes down the discharge head, The aforementioned pump mechanism is A first cylinder, whose interior is a first storage space that communicates with the container body, A second cylinder is positioned above the first cylinder, has an inner diameter smaller than the inner diameter of the first cylinder, its interior communicates with the first storage space, and is a second storage space with a smaller internal volume than the first storage space. A first piston is housed within the first cylinder so as to be slidable in the vertical direction and is also movable relative to the stem in the vertical direction, A second piston is housed within the second cylinder so as to be slidable in the vertical direction and moves in conjunction with the vertical movement of the stem, A biasing member that biases the first piston upward, thereby closing the inside of the stem via the first piston, The first storage space includes a valve body that opens when the pressure in the lower space below the first piston becomes higher than the pressure in the upper space above the first piston, thereby allowing communication between the lower space and the upper space. The stem extends downward from the second piston and communicates with the first and second storage spaces. The discharger is characterized in that the first piston moves downward while keeping the inside of the stem closed, and when the valve body opens, it moves downward so as to move away from the stem, opening the inside of the stem, and moves downward together with the stem while maintaining the open state. <2> <1> In the discharger described above, The valve body is provided on the first piston and has an annular elastic valve that slides against the inner circumferential surface of the first cylinder. Discharger, wherein the elastic valve is switchable between a closed state that blocks communication between the lower space and the upper space, and an open state that allows communication between the lower space and the upper space by elastically deforming to reduce its diameter when the pressure in the lower space becomes higher than the pressure in the upper space. <3> <1> or <2> In the discharger described above, The first piston is, A piston body that can open and close the inlet of the aforementioned stem from below, It comprises a guide shaft that extends upward from the piston body and is inserted into the stem from below, The piston body is a discharger that, when the valve body opens, moves downward from the stem while maintaining the state in which the guide shaft is inserted into the stem, thereby opening the inlet. <4> <1> from <3> In any one of the dischargers described above, The first cylinder has an annular partition wall that surrounds the stem from the radial outside while allowing the stem to move vertically, The partition wall is arranged to divide the first storage space and the second storage space in the vertical direction, and the first storage space and the second storage space are connected through an annular gap between the inner peripheral edge of the partition wall and the stem, in the discharger. <5> <1> from <4> In any one of the dischargers described above, A discharger is provided in the first cylinder with a lower valve body that, when the first piston moves downward, blocks communication between the first storage space and the container body, and when the first piston moves upward, allows communication between the first storage space and the container body. [Explanation of Symbols]

[0095] O…Central axis 1...Dispenser 2... Stem 3…Pump mechanism 4…Discharge hole 5…Discharge head 8…Trigger lever 20…Cylinder No. 1 30…Second cylinder 50...First piston 60... Second piston 70…First coil spring (biasing member) 71...Ball valve (lower valve body) 81...First storage space 81a...Lower space 81b…Upper space 82...Second storage space 92... Partition Wall 110... Piston body 111... Guide axis 113... Elastic valve 120... Valve body

Claims

1. A pump mechanism having a cylindrical stem that is arranged to be movable downward while biased upward, and which is attached to the mouth of the container body that holds the contents, A discharge head is attached to the upper end of the stem, and has a discharge hole that communicates with the inside of the stem and opens forward, The pump mechanism is equipped with a trigger lever that, when operated towards the rear, pushes down the discharge head, The aforementioned pump mechanism is A first cylinder, whose interior is a first storage space that communicates with the container body, A second cylinder is positioned above the first cylinder, has an inner diameter smaller than the inner diameter of the first cylinder, its interior communicates with the first storage space, and is a second storage space with a smaller internal volume than the first storage space. A first piston is housed within the first cylinder so as to be slidable in the vertical direction and is also movable relative to the stem in the vertical direction, A second piston is housed within the second cylinder so as to be slidable in the vertical direction and moves in conjunction with the vertical movement of the stem, A biasing member that biases the first piston upward, thereby closing the inside of the stem via the first piston, The first storage space includes a valve body that opens when the pressure in the lower space below the first piston becomes higher than the pressure in the upper space above the first piston, thereby allowing communication between the lower space and the upper space. The stem extends downward from the second piston and communicates with the first and second storage spaces. The discharger is characterized in that the first piston moves downward while keeping the inside of the stem closed, and when the valve body opens, it moves downward so as to move away from the stem, opening the inside of the stem, and moves downward together with the stem while maintaining the open state.

2. In the discharger according to claim 1, The valve body is provided on the first piston and has an annular elastic valve that slides against the inner circumferential surface of the first cylinder. Discharger, wherein the elastic valve is switchable between a closed state that blocks communication between the lower space and the upper space, and an open state that allows communication between the lower space and the upper space by elastically deforming to reduce its diameter when the pressure in the lower space becomes higher than the pressure in the upper space.

3. In the discharger according to claim 1 or 2, The first piston is, A piston body that can open and close the inlet of the aforementioned stem from below, It comprises a guide shaft that extends upward from the piston body and is inserted into the stem from below, The piston body is a discharger that, when the valve body opens, moves downward from the stem while maintaining the state in which the guide shaft is inserted into the stem, thereby opening the inlet.

4. In the discharger according to claim 1 or 2, The first cylinder has an annular partition wall that surrounds the stem from the radial outside while allowing the stem to move vertically, The partition wall is arranged to divide the first storage space and the second storage space in the vertical direction, and the first storage space and the second storage space are connected through an annular gap between the inner peripheral edge of the partition wall and the stem, in the discharger.

5. In the discharger according to claim 1 or 2, A discharger is provided in the first cylinder with a lower valve body that, when the first piston moves downward, blocks communication between the first storage space and the container body, and when the first piston moves upward, allows communication between the first storage space and the container body.

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