Dispenser

Abstract

To improve convenience.SOLUTION: A discharge device 12 includes: a discharge device main body 12A which has a stem 14 arranged on an inner side of a mouth part 11a of a container body 11 so as to move downward in an upwardly biased state; and a push-down head 17 which is mounted on an upper end part of the stem 14 and has a nozzle hole 75a for discharging content liquid. When the push-down head 17 is pushed down, the stem 14 descends together with the push-down head 17, and the content liquid in the container body 11 is discharged from the nozzle hole 75a through the stem 14. The discharge device 12 further includes a ring 18 which is mounted on the push-down head 17 so as to rotate and move, restricts descent of the push-down head 17 when positioned in a restriction position as one position in a circumferential direction, and releases the restriction of the descent of the push-down head 17 when positioned in a release position as the other position in the circumferential direction.SELECTED DRAWING: Figure 1

Description

[Technical field]

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

[0002] Conventionally, there has been known a dispenser such as that shown in Patent Document 1. This dispenser includes a dispenser body having a stem arranged inside the mouth of a container body so as to be movable downward in an upwardly biased state, a push-down head attached to the upper end of the stem and having a nozzle hole for discharging the content liquid, and a stopper member detachably attached to the dispenser body and restricting the downward movement of the push-down head. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2015-085984 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the conventional dispenser, when a user uses the dispenser, the push-down head is lowered, and after the stopper member is detached from the dispenser body, the user must attach the stopper member to the dispenser body again in order to restrict the push-down of the push-down head again. This makes it necessary to store the stopper member separately, and there is a risk of losing the stopper member. From this perspective, there is room for improvement in the conventional dispenser to improve its convenience.

[0005] The present invention has been made in consideration of the above circumstances, and has an object to provide a dispenser that can improve convenience. [Means for solving the problem]

[0006] <1> A dispenser according to one aspect of the present invention comprises a dispenser body having a stem arranged inside an opening of a container body so as to be able to move downward in an upwardly biased state, and a press-down head attached to an upper end of the stem and having a nozzle hole for discharging a liquid content, wherein the stem descends together with the press-down head when the press-down head is pressed down, and the liquid content inside the container body is discharged from the nozzle hole through the stem, and the dispenser further comprises a ring attached to be rotatable relative to the press-down head, which restricts the descent of the press-down head when located at a restricting position which is one position in the circumferential direction, and which releases the restriction on the descent of the press-down head when located at a releasing position which is another position in the circumferential direction. the dispenser body further comprises a liquid piston connected to the stem, a liquid cylinder in which the liquid piston is provided so as to be able to slide up and down, an air piston connected to the stem, an air cylinder in which the air piston is provided so as to be able to slide up and down, an air-liquid mixing chamber in which the liquid content transferred from the liquid cylinder and the air content transferred from the air cylinder are mixed to foam the liquid content, and an attachment cap for attaching the air cylinder to the mouth portion, and the push-down head further comprises an inner cylinder whose lower end is fitted to the upper end of the stem from the outside in the radial direction and is disposed inside the attachment cap, and an outer cylinder which covers the upper end of the inner cylinder from the outside in the radial direction, a communication passage that communicates between the inside of the air cylinder and the outside is provided between the inner peripheral surface of the attachment cap and the outer peripheral surface of the lower end of the inner cylinder, the ring is rotatably attached to the outer cylinder and covers an intermediate portion between an upper end and a lower end of the inner cylinder from the outside in the radial direction, the press-down head further comprises a nozzle tube portion that extends radially outward from the inner cylinder, penetrates the outer cylinder in the radial direction, and protrudes radially outward from the ring, an insertion hole is formed in the ring through which the nozzle tube portion is inserted and which is larger in the circumferential direction than the nozzle tube portion, and when the ring is rotated and moved relative to the press-down head, the nozzle tube portion moves in the circumferential direction within the insertion hole. .

[0007] In this ejector, for example, when the content liquid is not being ejected, the user places the ring in the restriction position, thereby restricting the descent of the depression head. On the other hand, when discharging the content liquid, the user moves the ring from the restricting position to the releasing position, thereby releasing the restriction on the downward movement of the depression head. As described above, according to this dispenser, the ring can be rotated in the circumferential direction to restrict the descent of the push-down head and release the restriction. Therefore, it is not necessary to reuse the stopper member removed from the dispenser body, as in the conventional technology, to restrict and release the descent of the push-down head. This improves the convenience of the dispenser. For example, a configuration may be considered in which the depression head rotates instead of the ring to restrict and release the descent of the depression head. However, when the depression head is relatively large in the radial direction, for example when the depression head has a nozzle that protrudes radially outward, there is a risk that the user may come into contact with the depression head and the depression head may rotate unintentionally. Therefore, in such a case, if the restriction and release of the descent of the depression head is realized by the rotation of the depression head, there is a risk that the descent of the depression head may be unexpectedly restricted or the restriction may be unexpectedly released. Therefore, as in this dispenser, by restricting the descent of the depression head by a ring instead of the depression head, such a risk is suppressed.

[0009] In this dispenser, the foamed liquid content is dispensed.

[0010] < 2 >Above< 1 >Discharger relating to So, A first convex portion may be provided on the outer peripheral surface of the attachment cap, and a second convex portion may be provided on the inner peripheral surface of the ring, and when the ring is positioned in the restricted position, the first convex portion and the second convex portion engage with each other in the vertical direction to restrict the descent of the press-down head, and when the ring is positioned in the released position, the first convex portion and the second convex portion are shifted in the circumferential direction to release the restriction on the descent of the press-down head.

[0011] The upper end of the inner cylinder is covered by the outer cylinder, and the lower end of the inner cylinder is covered by the mounting cap. However, the middle part of the inner cylinder is not covered by the outer cylinder or the mounting cap. Therefore, in this dispenser, there is a risk that water may unintentionally enter the middle part of the inner cylinder between the outer cylinder and the mounting cap. Here, in this dispenser, the ring covers the middle part of the inner cylinder from the outside in the radial direction. Therefore, the intrusion of water as described above is restricted, and a waterproof effect is obtained. Furthermore, when the ring is in the restricting position, the first convex portion and the second convex portion are engaged in the vertical direction to restrict the descent of the press head. When the ring is in the releasing position, the first convex portion and the second convex portion are shifted in the circumferential direction to release the restriction on the descent of the press head. Therefore, the restriction of the press head by the ring and the release of the restriction can be reliably achieved. Furthermore, the restriction of the descent of the press head and the release of the restriction can be achieved by providing a convex portion (concave portion) on the ring or the mounting cap. Therefore, the above-mentioned restriction and the release of the restriction can be achieved without making major design changes such as a significant increase in the number of parts.

[0012] < 3 >Above< 2 >In the dispenser related to the above, the first convex portion and the second convex portion are arranged in a plurality of circumferentially spaced relation, and a first recess is formed between adjacent first convex portions in the circumferential direction, the second recess is formed between adjacent second convex portions in the circumferential direction, and when the ring is positioned in the release position, the first convex portion overlaps with the second recess in the vertical direction, and the second convex portion overlaps with the first recess in the vertical direction, and in a plan view viewed from the vertical direction, the first convex portion and the second recess that overlap in the vertical direction at the release position have equivalent shapes, and the second convex portion and the first recess that overlap in the vertical direction at the release position have equivalent shapes.

[0013] In a plan view from the top and bottom, the first convex portion and the second concave portion that overlap in the top and bottom direction in the release position have the same shape, and the second convex portion and the first concave portion that overlap in the top and bottom direction in the release position have the same shape. This makes it difficult for water to pass between the first convex portion and the second convex portion, and the above-mentioned waterproof effect is significantly achieved. Effect of the Invention

[0014] According to the present invention, convenience can be improved. [Brief description of the drawings]

[0015] [Figure 1]1 is a vertical cross-sectional view of a dispenser according to an embodiment of the present invention; [Diagram 2] 2 is a cross-sectional view showing only the mounting cap and the ring taken along the line II-II in FIG. 1, showing a state in which the ring is positioned at a restricted position. FIG. [Diagram 3] 2 is a cross-sectional view showing only the mounting cap and the ring taken along the line II-II in FIG. 1, with the ring positioned at the release position. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, an embodiment of the present invention will be described with reference to Figures 1 to 3. In the following explanation, a dispensing container in which a dispenser according to the present invention is attached to a container body will be described. The discharge container 1 shown in FIG. 1 includes a cylindrical container body 11 with a bottom, and a discharger 12 detachably attached to an opening portion 11a of the container body 11. A liquid content is contained in the container body 11. Examples of the liquid content include liquids to be applied to the body, such as detergents (shampoo, body soap, hand soap, etc.) and disinfectants.

[0017] In this embodiment, the dispenser 12 dispenses the content liquid in the form of foam. The dispenser 12 is a so-called foam pump. However, the dispenser 12 does not have to be a foam pump. The dispenser 12 may dispense the content liquid in liquid form. The dispenser 12 includes a pump module 15 having a cylindrical stem 14, a cylindrical mounting cap 16 with a top, a cylindrical press-down head 17 with a top, and a ring 18 rotatably attached to the press-down head 17. The pump module 15 and the mounting cap 16 constitute the dispenser main body 12A.

[0018] The container body 11, stem 14, mounting cap 16, push-down head 17, and ring 18 are each provided coaxially with a common axis. Hereinafter, this common axis is referred to as axis O, and the direction along axis O is referred to as the up-down direction. In the up-down direction, the direction from the bottom of the container body 11 toward the dispenser 12 is referred to as the up direction, and the direction from the dispenser 12 toward the bottom of the container body 11 is referred to as the down direction. In addition, in a plan view seen from the up-down direction, the direction intersecting axis O is referred to as the radial direction, and the direction going around axis O is referred to as the circumferential direction.

[0019] The mounting cap 16 includes an annular top wall 16a, a mounting tube 16b extending downward from the outer periphery of the top wall 16a, and a guide tube 16c extending upward from the inner periphery of the top wall 16a. The mounting tube 16b is detachably screwed into the mouth portion 11a. However, the mounting tube 16b may be attached to the mouth portion 11a by a method other than screwing, such as undercut fitting. The top wall 16a extends radially above the mouth portion 11a. The inner peripheral edge of the top wall 16a is located radially inward of the mouth portion 11a.

[0020] A vertical groove C1 extending in the up-down direction is formed on the inner peripheral surface of the guide tube 16c. The vertical groove C1 engages with a vertical rib provided on the press head 17 (in the illustrated example, an inner tube 73 described later) to restrict rotational movement of the press head 17 relative to the attachment cap 16. Note that the configuration for restricting rotational movement of the press head 17 relative to the attachment cap 16 is not limited to the combination of the vertical groove C1 and the vertical rib.

[0021] The pump module 15 includes an air cylinder 21, a liquid cylinder 22, a liquid valve member 23, a liquid piston 24, an air piston 25, an air valve member 26, a stem 14, a biasing member 27, a foaming member 28, and a discharge valve 29.

[0022] The air cylinder 21 is held inside the mounting cap 16. The mounting cap 16 attaches the air cylinder 21 to the mouth portion 11a. The air cylinder 21 is formed in a cylindrical shape with a bottom.

[0023] The liquid cylinder 22 is formed integrally with the air cylinder 21. The liquid cylinder 22 extends downward from the bottom wall of the air cylinder 21. The lower end of the liquid cylinder 22 is a tapered section 46. The diameter of the tapered section 46 gradually decreases as it extends downward. An attachment tube 47 is formed integrally with the tapered section 46 at the lower edge of the tapered section 46. A suction tube 48 is fitted into the attachment tube 47. The lower end opening of the suction tube 48 is close to the bottom of the container body 11.

[0024] The liquid valve member 23 switches between communication and cut-off between the inside of the container body 11 and the inside of the liquid cylinder 22. The liquid valve member 23 is disposed in the liquid cylinder 22 so as to be able to move up and down. The liquid valve member 23 extends in the vertical direction within the liquid cylinder 22. An upper portion of the liquid valve member 23 protrudes upward from the liquid cylinder 22. The liquid valve member 23 includes a lower valve body 52 and an upper valve body 53.

[0025] The lower valve body 52 is formed at the lower end of the liquid valve member 23. The lower valve body 52 is configured to be able to come into contact with and separate from the inner circumferential surface of the tapered portion 46 in accordance with the up and down movement of the liquid valve member 23. The lower valve body 52 is a check valve that comes into contact with the inner circumferential surface of the tapered portion 46 when the liquid cylinder 22 is pressurized to keep the lower end opening of the tapered portion 46 closed, and moves away from the inner circumferential surface of the tapered portion 46 when the liquid cylinder 22 is depressurized to open the lower end opening of the tapered portion 46. The upper valve body 53 is formed at the upper end of the liquid valve member 23 .

[0026] The liquid piston 24 is configured to be movable up and down within the liquid cylinder 22 in conjunction with the stem 14. The liquid piston 24 includes a sliding cylinder 55 and a base cylinder portion 56. The sliding cylinder 55 surrounds the periphery of the liquid valve member 23 inside the liquid cylinder 22. The sliding cylinder 55 slides on the inner circumferential surface of the liquid cylinder 22 as the liquid piston 24 moves up and down. The base tube part 56 extends upward from the vertical center of the sliding tube 55. The upper valve body 53 moves from above toward and away from the edge of the upper opening of the base tube part 56. The upper valve body 53 functions as a seal when the discharge container 1 is distributed commercially. When the content liquid is discharged, the upper valve body 53 moves away from the edge of the upper opening of the base tube part 56 to open the upper opening of the base tube part 56.

[0027] The air piston 25 is configured to be movable up and down in the air cylinder 21 in conjunction with the stem 14. The air piston 25 divides the inside of the air cylinder 21 into an upper chamber 21a and a lower chamber 21b. The air piston 25 is configured such that an outer peripheral cylinder 61 and an inner peripheral cylinder 62 are connected by a connecting portion 63. The outer cylinder 61 is configured to be slidable in the vertical direction on the inner peripheral surface of the air cylinder 21 . The inner peripheral cylinder 62 is disposed inside the outer peripheral cylinder 61 coaxially with the axis O. The connecting portion 63 connects the outer peripheral cylinder 61 and the inner peripheral cylinder 62. A communication hole 64 is formed in the connecting portion 63. The communication hole 64 penetrates the connecting portion 63 in the up-down direction.

[0028] The air valve member 26 switches between communication and blocking between the upper chamber 21a and the lower chamber 21b of the air cylinder 21 through the communication hole 64. The air valve member 26 is attached to the lower part of the inner circumferential tube 62 (a part located below the connecting part 63). The air valve member 26 opens and closes the communication hole 64. The air valve member 26 allows air to flow from the upper chamber 21a to the lower chamber 21b. The air valve member 26 regulates air to flow from the lower chamber 21b to the upper chamber 21a. The air valve member 26 opens when the lower chamber 21b is depressurized and closes when the lower chamber 21b is pressurized.

[0029] The stem 14 is disposed in the mouth 11a of the container body 11 in an upwardly biased state so as to be movable downward. The stem 14 extends vertically from within the liquid cylinder 22, through the air cylinder 21, and into the guide cylinder 16c. A base cylinder portion 56 is fitted into the lower portion of the stem 14 from below the stem 14. Therefore, the liquid piston 24 moves vertically together with the stem 14. The vertical middle portion of the stem 14 is surrounded by an inner cylinder 62. The inner cylinder 62 is configured so as to be movable vertically relative to the stem 14.

[0030] The stem 14 includes a base portion 87 and a seat portion 88 . The seat portion 87 protrudes radially outward from a portion of the stem 14 that is located below the inner cylinder 62. The seat portion 87 is configured to be able to approach and separate from the lower edge of the inner cylinder 62 as the stem 14 and the air piston 25 move relative to each other. The seat 88 projects radially inward from the upper portion of the stem 14 .

[0031] The urging member 27 is disposed in the liquid cylinder 22. The urging member 27 urges the stem 14 upward via the liquid piston 24. The urging member 27 is disposed between a vertical rib protruding from the inner circumferential surface of the tapered portion 46 and the lower end of the base tube portion 56.

[0032] The foaming member 28 is attached inside the upper end of the stem 14. The foaming member 28 protrudes upward from the stem 14. The inside of the foaming member 28 forms a gas-liquid mixing chamber S2 in which the content liquid transferred from the liquid cylinder 22 and the air transferred from the air cylinder 21 are mixed. The foaming member 28 mixes the content liquid and the air in the gas-liquid mixing chamber S2 to foam them.

[0033] The discharge valve 29 is provided inside the stem 14, in a portion located between the seating portion 88 and the foaming member 28. The discharge valve 29 is seated so as to be able to move upward from the seating portion 88. The discharge valve 29 switches between communication and blocking between the inside of the stem 14 and the inside of the foaming member 28 (gas-liquid mixing chamber S2) through the inside of the seating portion 88. The discharge valve 29 functions as a check valve that moves away from the seating portion 88 to open the seating portion 88 when the inside of the liquid cylinder 22 is pressurized, and comes into contact with the seating portion 88 to close the seating portion 88 when the inside of the liquid cylinder 22 is depressurized.

[0034] The press head 17 is formed in a cylindrical shape with a top wall portion 71 and a peripheral wall portion 72, and is arranged coaxially with the axis O. The press head 17 has an inner tube 73 and an outer tube 74 protruding downward from the top wall portion 71, and a nozzle tube portion 75 extending radially outward from the inner tube 73 and penetrating the outer tube 74 and the peripheral wall portion 72 in the radial direction. The outer tube 74 has a larger diameter than the inner tube 73 and covers the upper end portion of the inner tube 73 from the radial outside. A nozzle hole 75a opening in the radial direction is formed at the tip of the nozzle tube portion 75. The inside of the nozzle tube portion 75 is connected to the inside of the inner tube 73.

[0035] The inner tube 73 is disposed coaxially with the axis O. The lower end of the inner tube 73 is located higher than the lower end of the peripheral wall portion 72 and the lower end of the outer tube 74. The lower end of the inner tube 73 is disposed inside the mounting cap 16 (inside the guide tube 16c). The lower end of the inner tube 73 fits into the upper end of the stem 14 and the foaming member 28 from the outside in the radial direction. The lower end of the inner tube 73 also fits into the upper end of the inner peripheral tube 62 from the outside in the radial direction. The inner tube 73 is assembled to the dispenser main body 12A from above.

[0036] A communication passage C that communicates between the inside of the air cylinder 21 and the outside is provided between the inner peripheral surface of the mounting cap 16 and the outer peripheral surface of the lower end of the inner tube 73. The communication passage C extends, for example, over the entire circumference between the inner peripheral surface of the mounting cap 16 and the outer peripheral surface of the inner tube 73 in the circumferential direction. The upper end of the communication passage C opens upward from the upper end of the guide tube 16c. The lower end of the communication passage C opens downward from the lower end of the guide tube 16c. The communication passage C can communicate with the lower chamber 21b through the upper chamber 21a and the communication hole 64.

[0037] The upper end of the inner tube 73 is covered by the outer tube 74, and the lower end is covered by the mounting cap 16. The intermediate portion of the inner tube 73 between the upper and lower ends is not covered from the radial outside by the outer tube 74 or the mounting cap 16. The ring 18 covers the radially outer side of the middle portion of the inner cylinder 73. The ring 18 prevents water from entering the air cylinder 21 from the outside. The ring 18 functions as a waterproof ring.

[0038] The ring 18 is attached so as to be rotatable relative to the outer cylinder 74. In this embodiment, the upper end of the ring 18 is fitted into the outer cylinder 74 so as to be rotatable relative to the outer cylinder 74 in the circumferential direction. The ring 18 has a smaller diameter than the peripheral wall portion 72 of the press-down head 17. The peripheral wall portion 72 covers the upper end portion of the ring 18 from the outside in the radial direction. As a result, the peripheral wall portion 72 protects the ring 18, and prevents the ring 18 from rotating inadvertently.

[0039] The nozzle cylinder portion 75 protrudes radially outward from the ring 18. An insertion hole 81 through which the nozzle cylinder portion 75 is inserted is formed at the upper end of the ring 18. The insertion hole 81 opens upward. The insertion hole 81 is larger in the circumferential direction than the nozzle cylinder portion 75. When the ring 18 rotates relative to the press-down head 17, the nozzle cylinder portion 75 moves circumferentially within the insertion hole 81. The lower end of the ring 18 covers the upper end of the guide tube 16c (the mounting cap 16) from the outside in the radial direction. The guide tube 16c is movable up and down within the ring 18.

[0040] In this embodiment, as shown in Figs. 1 and 2, the ring 18 restricts the downward movement of the pressing head 17 when it is located at a restricting position, which is one position in the circumferential direction. Meanwhile, as shown in Fig. 3, the ring 18 releases the restriction on the downward movement of the pressing head 17 when it is located at a release position, which is another position in the circumferential direction. The ring 18 rotates in the circumferential direction between the restricting position and the release position. The ring 18 in the restricting position moves to the release position by rotating to the first side in the circumferential direction. The ring 18 in the release position is located on the first side in the circumferential direction relative to the ring 18 in the restricting position. The ring 18 in the restricting position is located on the second side in the circumferential direction (opposite the first side) relative to the ring 18 in the release position.

[0041] When the ring 18 is in the restricting position, the ring 18 is engaged with the dispenser body 12A. This restricts the downward movement of the press-down head 17. On the other hand, when the ring 18 is in the releasing position, the engagement between the ring 18 and the dispenser body 12A is released. This releases the restriction on the downward movement of the press-down head 17.

[0042] As shown in Fig. 2 and Fig. 3, a first protrusion 16d and a first recess 16e are provided on the outer peripheral surface of the attachment cap 16. A plurality of first protrusions 16d (two in this embodiment) are arranged at intervals in the circumferential direction. The first recess 16e is a space located between the first protrusions 16d adjacent to each other in the circumferential direction. The first recess 16e is recessed radially inward with respect to the first protrusions 16d (the radially outer end surface of the first protrusions 16d). A plurality of first recesses 16e (two in this embodiment) are arranged at intervals in the circumferential direction. The circumferential size of the first protrusion 16d is larger than the circumferential size of the first recess 16e.

[0043] A circumferential groove 16f is formed in each first protrusion 16d. The circumferential groove 16f is disposed at an end of each first protrusion 16d on the first side in the circumferential direction. The circumferential groove 16f extends from an edge of each first protrusion 16d on the first side in the circumferential direction to a second side in the circumferential direction. The circumferential groove 16f opens to the first side in the circumferential direction and does not open to the second side. The circumferential groove 16f has an end face 16g located on the second side relative to the circumferential groove 16f. The end face 16g faces the first side in the circumferential direction. The circumferential groove 16f opens upward and does not open downward. The circumferential groove 16f has a bottom face 16h located below the circumferential groove 16f. The bottom face 16h faces upward. A protrusion 16i that protrudes upward is provided at the end of the bottom face 16h on the first side in the circumferential direction. The projection 16i can be overcome in the circumferential direction by a second protruding portion 82, which will be described later.

[0044] A second protrusion 82 and a second recess 83 are provided on the inner peripheral surface of the ring 18. A plurality of second protrusions 82 (two in this embodiment) are arranged at intervals in the circumferential direction. The second recess 83 is a space located between adjacent second protrusions 82 in the circumferential direction. The second recess 83 is recessed radially outward from the second protrusions 82 (the radially outer end surface of the second protrusions 82). A plurality of second recesses 83 (two in this embodiment) are arranged at intervals in the circumferential direction.

[0045] The circumferential size of the second protrusion 82 is smaller than the circumferential size of the second recess 83. The circumferential size of the second protrusion 82 is smaller than the circumferential size of the circumferential groove 16f. As shown in FIG. 1, the second protrusion 82 is larger in the up-down direction than the first protrusion 16d. The second protrusion 82 is a vertical rib provided on the inner circumferential surface of the ring 18.

[0046] 1 and 2, when the ring 18 is in the restricted position, the first protrusion 16d and the second protrusion 82 are engaged in the vertical direction, restricting the descent of the press-down head 17. At this time, the second protrusion 82 is disposed in the circumferential groove 16f. The lower end surface of the second protrusion 82 is engaged with the bottom surface 16h of the circumferential groove 16f, restricting the descent of the press-down head 17. At this time, the second protrusion 82 is restricted by the protrusion 16i from unintentionally slipping out of the circumferential groove 16f to the first side in the circumferential direction.

[0047] On the other hand, as shown in FIG. 3, when the ring 18 is in the release position, the first convex portion 16d and the second convex portion 82 are shifted in the circumferential direction, and the restriction on the downward movement of the pressing head 17 is released. At this time, the second convex portion 82 is forced to climb over the projection 16i and comes out of the circumferential groove 16f to the first side in the circumferential direction. Also, at this time, the first convex portion 16d overlaps with the second recess 83 in the vertical direction, and the second convex portion 82 overlaps with the first recess 16e in the vertical direction. The first convex portion 16d can move up and down within the second recess 83. The second convex portion 82 can move up and down within the first recess 16e.

[0048] In this embodiment, in a plan view seen from the top and bottom, the first convex portion 16d and the second recess 83 that overlap in the top and bottom direction at the release position have the same shape, and the second convex portion 82 and the first recess 16e that overlap in the top and bottom direction at the release position have the same shape. When the ring 18 is in the release position, the outer surface of the first convex portion 16d and the outer surface of the second recess 83 are close to each other or come into contact with each other, and the outer surface of the second convex portion 82 and the inner surface of the first recess 16e are close to each other or come into contact with each other. This makes it difficult for water to flow between the first convex portion 16d and the second convex portion 82, and the effect of the ring 18 as a waterproof ring is significantly achieved. Note that a minute gap that does not substantially allow water to enter may be provided between (1) the outer surface of the first convex portion 16d and the outer surface of the second recess 83, and between (2) the outer surface of the second convex portion 82 and the inner surface of the first recess 16e, respectively.

[0049] Next, a description will be given of the operation of the above-mentioned discharge container 1. In the following description, the description will be given starting from a state where the press-down head 17 is in the regulating position.

[0050] In this dispensing container 1, for example, when the content liquid is not being dispensed, the user places the ring 18 in the restricting position as shown in Figs. 1 and 2, so that the descent of the depression head 17 is restricted. 3, when discharging the content liquid, the user rotates the ring 18 to the first side in the circumferential direction, moving the ring 18 from the restricted position to the released position, thereby releasing the restriction on the downward movement of the press-down head 17. When the press-down head 17 is pressed in this state, the first convex portion 16d relatively rises within the second concave portion 83, and the second convex portion 82 relatively descends within the first concave portion 16e.

[0051] In addition, with the downward movement of the push-down head 17, the push-down head 17, the stem 14, the foaming member 28, and the liquid piston 24 move downward relative to the air piston 25. At this time, the base tube portion 56 of the liquid piston 24 moves downward away from the upper valve body 53, so that the inside of the liquid cylinder 22 and the inside of the stem 14 communicate with each other through the gap between the upper valve body 53 and the base tube portion 56. In this state, when the liquid piston 24 moves further downward together with the stem 14, etc., the inside of the liquid cylinder 22 is pressurized. At this time, the lower valve body 52 maintains a state in which the communication between the inside of the liquid cylinder 22 and the inside of the container body 11 is blocked. As a result, the liquid content in the liquid cylinder 22 enters the stem 14 through the gap between the upper valve body 53 and the base tube portion 56. The liquid content that has entered the stem 14 flows upward inside the stem 14 and flows upward through the inside of the seat portion 88, pushing up the discharge valve 29. This causes the discharge valve 29 to move away from the seating portion 88. As a result, the content liquid flows through the gap between the seating portion 88 and the discharge valve 29, and then flows into the foaming member 28 (gas-liquid mixing chamber S2).

[0052] Meanwhile, with the downward movement of the stem 14 etc. relative to the air piston 25, the inner circumferential tube 62 moves upward away from the base portion 87. As a result, the air cylinder 21 is opened through the gap between the inner circumferential tube 62 and the base portion 87. In this state, when the stem 14 etc. is further moved downward, the lower end of the inner circumferential tube 73 abuts against the inner circumferential tube 62 from above. As a result, the air piston 25 is pushed down by the inner circumferential tube 73 via the inner circumferential tube 62, and the air piston 25 moves downward together with the stem 14 etc. As a result, the inside of the air cylinder 21 is pressurized. At this time, the air valve member 26 maintains a state in which communication between the upper chamber 21a and the lower chamber 21b through the communication hole 64 is blocked. As a result, the air in the air cylinder 21 flows upward between the inner circumferential tube 62 and the base portion 87, between the inner circumferential tube 62 and the stem 14, and between the inner tube 73 and the stem 14. Thereafter, the air flows around the upper edge of the stem 14, passes between the stem 14 and the foaming member 28, and then flows into the stem 14, and then flows into the foaming member 28 (gas-liquid mixing chamber S2).

[0053] The air and the liquid content that flow into the gas-liquid mixing chamber S2 join together in the gas-liquid mixing chamber S2. This causes the air and the liquid content to mix in the gas-liquid mixing chamber S2. The liquid content mixed with the air foams and becomes foamy. The foamy liquid passes through the inner tube 73 of the press-down head 17 and the nozzle tube portion 75 and is discharged from the nozzle hole 75a.

[0054] After the content liquid is discharged, the depression of the push-down head 17 is released. The stem 14 and the like are pushed up by the upward biasing force of the biasing member 27. Then, the push-down head 17, the stem 14, the foaming member 28 and the liquid piston 24 move upward together relative to the air piston 25. When the discharge valve 29 comes into contact with the seating portion 88, communication between the inside of the stem 14 and the inside of the foaming member 28 through the inside of the seating portion 88 is blocked. Also, when the base portion 87 comes into contact with the inner cylinder 62 from below, communication between the base portion 87 and the inner cylinder 62 is blocked.

[0055] Thereafter, the push-down head 17, the stem 14, the foaming member 28, the liquid piston 24 and the air piston 25 move upward together. As a result, the liquid cylinder 22 is depressurized, the liquid valve member 23 is pulled up, and the liquid cylinder 22 and the container body 11 communicate with each other. Then, the liquid content in the container body 11 is sucked up through the suction tube 48 and flows into the liquid cylinder 22. Also, the air cylinder 21 (lower chamber 21b) is depressurized, and the air valve member 26 opens, and the upper chamber 21a and the lower chamber 21b communicate with each other. Then, the air in the upper chamber 21a flows into the lower chamber 21b through the communication hole 64. Incidentally, air flows into the upper chamber 21a through the communication passage C, etc.

[0056] Here, when the presser head 17 etc. rises, the presser head 17 rises until the lower end of the second convex portion 82 reaches a position equivalent to the bottom surface 16h of the circumferential groove 16f. Thereafter, when the user again restricts the descent of the press-down head 17, the user rotates the ring 18 to the second circumferential side, moving the ring 18 from the release position to the restricting position. At this time, the user rotates the ring 18 to the second side, for example, until the ring 18 climbs over the protrusion 16i to the second circumferential side and abuts against the end face 16g of the circumferential groove 16f.

[0057] As described above, according to the dispenser 12 of this embodiment, the ring 18 is rotated in the circumferential direction to restrict the descent of the press-down head 17 and release the restriction. Therefore, in order to restrict and release the descent of the press-down head 17, it is not necessary to reuse the stopper member removed from the dispenser main body 12A as in the conventional technology. This improves the convenience of the dispenser 12.

[0058] For example, a configuration may be considered in which the depression head 17 rotates instead of the ring 18 to restrict and release the descent of the depression head 17. However, when the depression head 17 is relatively large in the radial direction, for example when the depression head 17 has a nozzle member 75 that protrudes radially outward, there is a risk that the user may come into contact with the depression head 17 and the depression head 17 may rotate unintentionally. Therefore, in such a case, if the restriction and release of the descent of the depression head 17 are realized by the rotation of the depression head 17, there is a risk that the descent of the depression head 17 may be unexpectedly restricted or the restriction may be unexpectedly released. Therefore, as in this dispenser 12, by restricting the descent of the depression head 17 by the ring 18 instead of the depression head 17, such a risk is suppressed.

[0059] The technical scope of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

[0060] In a plan view from the top-bottom direction, the first convex portion 16d and the second concave portion 83 that overlap in the top-bottom direction at the release position do not have to have the same shape. Also, in a plan view from the top-bottom direction, the second convex portion 82 and the first concave portion 16e that overlap in the top-bottom direction at the release position do not have to have the same shape. Furthermore, there may be only one first protrusion 16d or one second protrusion 82 in the circumferential direction. The ring 18 does not have to function as a waterproof ring.

[0061] In addition, within the scope of the invention, the components in the above-described embodiments may be replaced with well-known components, and the above-described modified examples may be combined as appropriate. [Explanation of symbols]

[0062] 11a Mouth 12 Dispenser 12A Dispenser body 14 Stem 16 Mounting cap 16d First protrusion 16e First recess 17 Pressing head 18 Ring 21 Air Cylinder 22 Liquid cylinder 24 Fluid piston 25 Air piston 73 Inner cylinder 74 Outer cylinder 75a Nozzle hole 82 Second convex part 83 Second recess C communication path S2 Gas-liquid mixing chamber

Claims

1. a dispenser body having a stem disposed inside a mouth of a container body so as to be movable downward in an upward biased state; A press-down head attached to an upper end of the stem and having a nozzle hole for discharging the content liquid, A dispenser in which, when the push-down head is pushed down, the stem moves down together with the push-down head, and the liquid content in the container is dispensed from the nozzle hole through the stem, a ring that is rotatably attached to the press head and restricts the descent of the press head when it is located at a restricting position that is one circumferential position, and releases the restriction on the descent of the press head when it is located at a release position that is another circumferential position, The ejector body includes: a liquid piston associated with the stem; a liquid cylinder in which the liquid piston is provided so as to be vertically slidable; an air piston associated with the stem; an air cylinder in which the air piston is provided so as to be vertically slidable; an air-liquid mixing chamber in which the liquid transferred from the liquid cylinder and the air transferred from the air cylinder are mixed together to foam the liquid; a mounting cap for mounting the air cylinder to the mouth portion; The pressing head comprises: an inner tube having a lower end portion that is fitted to an upper end portion of the stem from the outside in the radial direction and that is disposed inside the mounting cap; An outer cylinder that covers an upper end portion of the inner cylinder from the outside in the radial direction, a communication passage for communicating the inside of the air cylinder with the outside is provided between the inner peripheral surface of the mounting cap and the outer peripheral surface of the lower end of the inner cylinder, the ring is rotatably attached to the outer cylinder and covers an intermediate portion between an upper end portion and a lower end portion of the inner cylinder from the outside in the radial direction; The press-down head further includes a nozzle tube portion extending radially outward from the inner tube, penetrating the outer tube in the radial direction, and protruding radially outward from the ring, the ring has an insertion hole formed therein through which the nozzle cylinder portion is inserted and which is larger in the circumferential direction than the nozzle cylinder portion; When the ring rotates relative to the press-down head, the nozzle cylinder portion moves circumferentially within the insertion hole.

2. A first protrusion is provided on an outer peripheral surface of the mounting cap, A second protrusion is provided on an inner peripheral surface of the ring, When the ring is in the restricted position, the first protrusion and the second protrusion are engaged with each other in the vertical direction to restrict the downward movement of the pressing head. The dispenser according to claim 1 , wherein when the ring is in the release position, the first convex portion and the second convex portion are shifted in a circumferential direction, and the restriction on the downward movement of the press-down head is released.

3. The first protrusions and the second protrusions are arranged at intervals in the circumferential direction, A first recess is formed between the first protruding portions adjacent to each other in the circumferential direction and is recessed in a radial direction with respect to the first protruding portions, A second recess is formed between the second protruding portions adjacent to each other in the circumferential direction and is recessed in the radial direction with respect to the second protruding portions, When the ring is in the release position, the first protrusion overlaps the second recess in the vertical direction, and the second protrusion overlaps the first recess in the vertical direction, 3. The dispenser according to claim 2, wherein, in a plan view from the top and bottom, the first convex portion and the second concave portion that overlap in the top and bottom direction in the release position have equivalent shapes, and the second convex portion and the first concave portion that overlap in the top and bottom direction in the release position have equivalent shapes.

Images