Dispenser

Abstract

To provide a dispenser having a structure capable of suppressing a backflow of a content through an outside air introduction passage.SOLUTION: A dispenser (20) comprises a movable portion (20a) having a stem (40) and a dispenser head, a mounting cap (50), a cylinder (60), and a piston (70), in which an outside air introduction passage (90) is formed, a communication hole (42d) is formed in the stem to communicate an inside of the stem with an inside of the cylinder, the movable portion has a first convex portion (41c) that protrudes upward and is rotatable around a rotation axis (O) that extends in a vertical direction, and the mounting cap has a second convex portion (56c) protruding downward, the first convex portion is capable of contacting the second convex portion in a circumferential direction and is capable of riding over the second convex portion when the movable portion is rotated, and when the first convex portion rides on the second convex portion, the stem moves downward relative to the piston to open the communication hole, and the inside of the stem and the inside of the cylinder communicate with each other via the communication hole.SELECTED DRAWING: Figure 3

Description

[Technical field]

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

[0002] For example, a pump device (discharger) that is attached to a container body (container main body) is known, as described in Patent Document 1. In such a pump device, an outside air introduction path is formed that connects the inside of the container body to the outside of the container body when a push-down head is pushed down. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2015-127226 A Summary of the Invention [Problem to be solved by the invention]

[0004] For example, when a container having a pump device as described above is left for a long period of time with volatile contents stored therein, the pressure inside the container may increase. In this case, when the contents are discharged, the contents inside the container may flow back through the outside air introduction path and may be sprayed out of the container.

[0005] In view of the above circumstances, one aspect of the present invention has an object to provide a dispenser having a structure capable of preventing the contents from flowing back through an outside air introduction passage. [Means for solving the problem]

[0006] One aspect of the dispenser of the present invention is a dispenser attached to the mouth of a container body in which contents are contained, the dispenser comprising: a movable part having a stem arranged to be able to move downward in an upwardly biased state; a dispenser head having a discharge port for discharging the contents and attached to an upper end of the stem; an attachment cap attached to the mouth; a cylindrical cylinder into which the stem is inserted; and a piston that is fitted to the inner circumferential surface of the cylinder so as to be able to slide up and down and moves up and down in conjunction with the vertical movement of the movable part, and when the piston is pressed downward in conjunction with the downward movement of the movable part, an outside air introduction passage is formed which connects the outside of the container body to the inside of the container body, and the stem has an opening opened by the piston. a connecting hole that can be closed by a spring and that connects the interior of the stem and the interior of the cylinder when the movable part is pushed downward, the movable part has a first convex part that protrudes upward and is rotatable around a rotation axis extending in the vertical direction, the mounting cap has a second convex part that protrudes downward, the first convex part is capable of contacting the second convex part in a circumferential direction around the rotation axis and is capable of climbing over the second convex part in the circumferential direction when the movable part is rotated around the rotation axis, and when the first convex part rides over the second convex part, the stem moves downward relative to the piston to open the connecting hole, and the interior of the stem and the interior of the cylinder are connected via the connecting hole.

[0007] According to one aspect of the dispenser of the present invention, the user can rotate the movable part around the rotation axis to make the first convex part ride on the second convex part, thereby communicating the inside of the stem with the inside of the cylinder through the communication hole in a state where communication between the outside of the container body and the inside of the container body through the outside air introduction path is blocked. As a result, even if, for example, part of the contents has evaporated and the pressure in the container body has increased, the air in the cylinder, the contents in the cylinder, or the gas evaporated in the cylinder can be released into the stem through the communication hole. As a result, the pressure in the container body connected to the inside of the cylinder can be released to the outside, and the pressure in the container body can be reduced. Therefore, by rotating the movable part around the rotation axis to reduce the pressure in the container body before discharging the contents, the user can prevent the air and contents in the container body from flowing back through the outside air introduction path when discharging the contents. Therefore, when the user uses the dispenser, the contents can be prevented from leaking to the outside through the outside air introduction path.

[0008] In particular, when the discharge container with the dispenser attached to the container body is in circulation in an unused state, the pressure inside the container body is likely to increase. Therefore, the effect of reducing the pressure inside the container body by rotating the above-mentioned movable part is particularly useful when a user uses an unused discharge container that has been in circulation for the first time. In addition, in an unused discharge container, gas such as air is sealed inside the cylinder. Therefore, when the movable part is rotated, when the first convex part rides on the second convex part, the gas inside the cylinder flows into the stem through the communication hole, and the gas can be released from inside the stem to the outside of the discharge container through the discharge port. This allows the pressure inside the container body to be reduced.

[0009] The movable portion may be configured to be movable in the circumferential direction from a first position to a second position, downward movement of the movable portion is restricted when the movable portion is located at the first position, and downward movement of the movable portion is permitted when the movable portion is located at the second position, and the first convex portion overcomes the second convex portion in the circumferential direction while the movable portion moves from the first position to the second position. According to this configuration, when a user rotates the movable part from the first position to the second position, thereby performing an operation to put the movable part in a state where it can be pushed down, i.e., a state where the contents can be discharged, the first convex part is caused to ride up onto the second convex part during the operation, and the pressure inside the container body is reduced by opening the communication hole. This makes it possible to prevent the movable part from being pushed down when the pressure inside the container body has not been reduced, and further prevents the air and contents inside the container body from flowing back through the outside air introduction path.

[0010] In particular, by setting the circumferential position of the movable part at the first position when the discharge container in which the dispenser is attached to the container body is distributed in an unused state, the user must rotate the movable part from the first position to the second position when using the unused discharge container for the first time. As a result, even if the pressure inside the container body of the discharge container is high at the stage of distribution, the pressure inside the container body can be reduced as described above before the user discharges the contents for the first time. Therefore, when the user uses the discharge container for the first time, it is possible to suitably suppress leakage of the contents to the outside through the outside air introduction path. Note that the user may leave the circumferential position of the movable part at the second position without returning it to the first position after using the discharge container for the first time, or may rotate the movable part to return the circumferential position of the movable part from the second position to the first position after using the discharge container for the first time.

[0011] At least one of the first convex portion and the second convex portion may be formed in a plurality of positions lined up in the circumferential direction, and the first convex portion may pass over the second convex portion in the circumferential direction two or more times while the movable portion moves from the first position to the second position. According to this configuration, when the user rotates the movable part from the first position to the second position to make the movable part pressurizable, the communication hole can be opened two or more times to reduce the pressure inside the container body. This makes it possible to more effectively reduce the pressure inside the container body, and more effectively prevent the air and contents inside the container body from flowing back through the outside air introduction path.

[0012] At least one of the first convex portion and the second convex portion may have an inclined surface capable of contacting the other convex portion of the first convex portion and the second convex portion in the circumferential direction, and the inclined surface may be configured to be inclined in the circumferential direction with respect to a plane perpendicular to the circumferential direction and extending in an up-down direction. According to this configuration, when the first convex portion moves relative to the second convex portion in the circumferential direction, the first convex portion can be easily moved downward relative to the second convex portion along the inclined surface, which makes it easier for the first convex portion to ride over the second convex portion. Effect of the Invention

[0013] According to one aspect of the present invention, it is possible to suppress the contents from flowing back through the outside air introduction passage in the dispenser. [Brief description of the drawings]

[0014] [Figure 1] FIG. 2 is a partial cross-sectional view showing a dispenser in the first embodiment. [Diagram 2] FIG. 2 is a cross-sectional view showing the discharge device in the first embodiment, taken along line II-II in FIG. [Diagram 3] FIG. 2 is a cross-sectional view showing a part of a dispenser in the first embodiment, and is a partially enlarged view of FIG. [Figure 4] 3 is a cross-sectional view showing a first protrusion and a second protrusion in the first embodiment. FIG. [Diagram 5] FIG. 2 is a partial cross-sectional view showing a part of the dispenser in the first embodiment, illustrating a state in which a movable part has been rotated about the axis of the container. [Figure 6] 6 is a cross-sectional view showing the ejector in the first embodiment, taken along line VI-VI in FIG. 5. [Figure 7] FIG. 2 is a cross-sectional view showing a first protruding portion and a second protruding portion in the first embodiment, illustrating a state in which the first protruding portion rides on the second protruding portion. [Figure 8] FIG. 6 is a cross-sectional view showing a part of the dispenser in the first embodiment, and is a partially enlarged view of FIG. 5. [Figure 9] FIG. 11 is a cross-sectional view showing a part of a dispenser in a second embodiment. [Figure 10] 13 is a cross-sectional view showing a first protrusion and a second protrusion in a second embodiment. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Hereinafter, a dispenser according to an embodiment of the present invention will be described with reference to the drawings. Note that the scope of the present invention is not limited to the following embodiment, and can be arbitrarily modified within the scope of the technical concept of the present invention. In the following description of each embodiment, the direction in which the container axis O of the container body 10 extends, i.e., the container axial direction, is referred to as the up-down direction. The up-down direction is indicated by the Z axis in each drawing. The mouth 11 side of the container body 10 along the up-down direction, i.e., the side toward which the Z axis arrow points, is referred to as the "upper side" or "upper side". The bottom side of the container body 10 along the up-down direction, i.e., the side opposite to the side toward which the Z axis arrow points, is referred to as the "lower side" or "lower". In addition, the direction intersecting the container axis O when viewed from the up-down direction is referred to as the radial direction, and the direction going around the container axis O is referred to as the circumferential direction. In the figure, the circumferential direction is indicated by the arrow θ. In the following description, the side in the circumferential direction that moves counterclockwise around the container axis O as viewed from above, i.e., the side toward which the arrow θ points (+θ side), is referred to as the "one circumferential side," and the side in the circumferential direction that moves clockwise around the container axis O as viewed from above, i.e., the opposite side to the side toward which the arrow θ points (-θ side), is referred to as the "other circumferential side."

[0016] First Embodiment As shown in Fig. 1, the dispensing container 100 of this embodiment includes a container body 10 in which the contents are accommodated, and a dispenser 20 attached to a mouth portion 11 of the container body 10. Figs. 1 to 4 show the dispensing container 100 in a state in which the dispenser 20 is not operated. The container body 10 is a cylindrical container with a bottom. In this embodiment, the container body 10 is a cylindrical container arranged coaxially with the container axis O. The contents accommodated inside the container body 10 are not particularly limited. The contents are, for example, a volatile liquid. The mouth portion 11 is arranged coaxially with the container axis O and is cylindrical with an upward opening. A threaded portion is formed on the outer circumferential surface of the mouth portion 11 into which the attachment cap 50 described later is screwed.

[0017] The dispenser 20 is detachably attached to the mouth portion 11. The dispenser 20 includes an attachment cap 50, a cylinder 60, a movable portion 20a, a piston 70, a valve member 80, and a biasing member 81. The attachment cap 50 is attached to the mouth portion 11. The attachment cap 50 is cylindrical and opens downward. In this embodiment, the attachment cap 50 is cylindrical and arranged coaxially with the container axis O. The attachment cap 50 has an attachment tube portion 51, a top wall portion 52, a first guide tube portion 53, a fitting tube portion 54, a connection wall portion 55, and a second guide tube portion 56.

[0018] The mounting tube portion 51 is tubular and opens downward. In this embodiment, the mounting tube portion 51 is cylindrical and arranged coaxially with the container axis O. The mounting tube portion 51 is located radially outside the mouth portion 11 and surrounds the mouth portion 11. A threaded portion is formed on the inner peripheral surface of the mounting tube portion 51 to be screwed into a threaded portion formed on the outer peripheral surface of the mouth portion 11. This allows the mounting tube portion 51 to be detachably attached to the mouth portion 11. The mounting tube portion 51 may be attached to the mouth portion 11 in any manner. The mounting tube portion 51 may be attached to the mouth portion 11 by undercut fitting.

[0019] The top wall portion 52 protrudes radially inward from the upper end of the mounting tube portion 51. The top wall portion 52 is annular and arranged coaxially with the container axis O. The top wall portion 52 is located above the mouth portion 11. A seal member 12 is arranged between the top wall portion 52 and the mouth portion 11 in the vertical direction. The seal member 12 is annular and arranged coaxially with the container axis O. The seal member 12 contacts the lower surface of the top wall portion 52 and the upper end of the mouth portion 11 to seal the space between the top wall portion 52 and the mouth portion 11.

[0020] The first guide tube portion 53 is a tube extending upward from the top wall portion 52. In this embodiment, the first guide tube portion 53 is arranged coaxially with the container axis O and is a cylinder opening upward. The first guide tube portion 53 is located radially inward from the mounting tube portion 51. As shown in FIG. 2, a recess 53a recessed radially outward is formed on the inner peripheral surface at the upper end of the first guide tube portion 53. The recess 53a extends in the circumferential direction. The inside of the recess 53a opens upward. The inner surface of the recess 53a has a bottom surface 53d located downward. The bottom surface 53d is a surface facing upward. The bottom surface 53d extends in the circumferential direction. A protrusion 53c protruding radially inward is formed on a surface located radially outward of the inner surface of the recess 53a. The protrusion 53c is formed on the inner surface of a portion of the recess 53a located on one circumferential side (+θ side) of the circumferential center. In this embodiment, a pair of recesses 53a are formed on either side of the container axis O in the radial direction.

[0021] As shown in FIG. 1, a groove 53b extending in the vertical direction is formed on the inner peripheral surface of the first guide tube portion 53. As shown in FIG. 2, the upper end of the groove 53b opens to a bottom surface 53d of the recess 53a. As a result, the inside of the groove 53b is connected to the inside of the recess 53a. The upper end of the groove 53b opens to an end on one circumferential side (+θ side) of the bottom surface 53d of the recess 53a. The circumferential position of the groove 53b is on one circumferential side of the protrusion 53c, and is a position adjacent to the protrusion 53c in the circumferential direction when viewed from above. The groove 53b extends from the bottom surface 53d of the recess 53a to a lower end on the inner peripheral surface of the first guide tube portion 53. In this embodiment, a pair of grooves 53b are formed on either side of the container axis O in the radial direction. The insides of the pair of grooves 53b are each connected to the insides of the pair of recesses 53a.

[0022] As shown in FIG. 1, the fitting tube portion 54 is tubular and protrudes upward from the radial inner edge of the top wall portion 52. The fitting tube portion 54 is arranged coaxially with the container axis O and is cylindrical and opens downward. The fitting tube portion 54 is located radially inward and away from the first guide tube portion 53. The upper end portion of the fitting tube portion 54 is located lower than the upper end portion of the first guide tube portion 53. The upper end portion of the cylinder 60 is fitted into the fitting tube portion 54.

[0023] 3, the connection wall portion 55 protrudes radially inward from the upper end portion of the fitting cylindrical portion 54. The connection wall portion 55 is annular and arranged coaxially with the container axis O. The connection wall portion 55 is located above the cylinder 60 and is in contact with the upper end portion of the cylinder 60. The connection wall portion 55 connects the upper end portion of the fitting cylindrical portion 54 and the upper end portion of the second guide cylindrical portion 56. The second guide tube portion 56 is tubular and protrudes downward from the radial inner edge of the connecting wall portion 55. The second guide tube portion 56 is arranged coaxially with the container axis O and is cylindrical and opens downward. The lower end portion of the second guide tube portion 56 is located at approximately the same position as the lower surface of the top wall portion 52 in the up-down direction.

[0024] The inner peripheral surface of the second guide tube portion 56 is formed with a step portion 56g having a step surface 56h facing downward. The inner diameter of the portion of the second guide tube portion 56 located below the step surface 56h is larger than the inner diameter of the portion of the second guide tube portion 56 located above the step surface 56h. The step surface 56h is annular and arranged coaxially with the container axis O. As shown in FIG. 4, the step surface 56h is formed with a second protrusion 56c protruding downward. The second protrusions 56c are arranged in a circumferential direction in a plurality of positions. The second protrusions 56c adjacent to each other in the circumferential direction are arranged with a small gap between them. The second protrusions 56c adjacent to each other in the circumferential direction may be adjacent to each other. In this embodiment, for example, a pair of second protrusion groups 56i consisting of a plurality of second protrusions 56c arranged in a circumferential direction are formed on either side of the container axis O. In this embodiment, the number of second protrusions 56c included in each second protrusion group 56i is 3. The multiple second protrusions 56c are arranged side by side in the circumferential direction to form a peak-valley shape in which downwardly protruding mountain shapes and upwardly recessed valley shapes are alternately provided in the circumferential direction.

[0025] In this embodiment, the second protrusion 56c is a triangular shape with rounded corners that is convex downward when viewed from the radial direction. The second protrusion 56c has a first surface (inclined surface) 56d, a second surface (inclined surface) 56e, and an apex 56f. The first surface 56d is a surface on one circumferential side (+θ side) of the second protrusion 56c. The second surface 56e is a surface on the other circumferential side (-θ side) of the second protrusion 56c. The first surface 56d and the second surface 56e are inclined surfaces that are inclined in the circumferential direction with respect to a surface that is perpendicular to the circumferential direction and extends in the up-down direction. The first surface 56d is located on the other circumferential side as it goes downward. The second surface 56e is located on one circumferential side as it goes downward. The apex 56f is a lower end portion that is located at the lowest position of the second protrusion 56c. The apex 56f is an arc shape that is convex downward when viewed from the radial direction. The lower end of the first surface 56d and the lower end of the second surface 56e are connected to each other via a top portion 56f.

[0026] As shown in FIG. 1, the cylinder 60 is a cylindrical member extending in the vertical direction. In this embodiment, the cylinder 60 is disposed coaxially with the container axis O and is cylindrical with openings on both sides in the vertical direction. The upper end of the cylinder 60 is fitted into the fitting tube portion 54 and fixed to the mounting cap 50. The upper end of the cylinder 60 is located radially between the fitting tube portion 54 and the second guide tube portion 56. The stem 40, which will be described later, is inserted inside the cylinder 60. The cylinder 60 is inserted from above into the mouth portion 11 and inserted into the container body 10.

[0027] The cylinder 60 has a cylindrical cylinder main body 61 extending in the vertical direction, a support rib 62 formed on the inner surface of the cylinder main body 61, and a cylindrical mounting tube 63 extending downward from the lower end of the cylinder main body 61. The lower end of the cylinder body 61 is a valve seat 61c whose inner diameter decreases downward. The lower end of the valve seat 61c is an inlet 61b that opens downward.

[0028] The support rib 62 is formed on the inner circumferential surface of the lower portion of the cylinder body 61. The lower end of the support rib 62 is connected to the upper end of the inner circumferential surface of the valve seat portion 61c. For example, a plurality of support ribs 62 are formed at intervals in the circumferential direction. The mounting tube portion 63 opens downward. A suction tube 64 extending in the vertical direction is fitted and fixed inside the mounting tube portion 63. Although not shown in the figure, the lower end of the suction tube 64 opens into the inside of the container body 10. The upper end inside the suction tube 64 is connected to the inlet portion 61b.

[0029] As shown in FIG. 3, the cylinder 60 is formed with an outside air introduction hole 61a. In this embodiment, the outside air introduction hole 61a is formed in an upper portion of the cylinder body 61 in the cylinder 60. The outside air introduction hole 61a penetrates a wall portion constituting the cylinder body 61 in the radial direction from the inner peripheral surface to the outer peripheral surface. The outside air introduction hole 61a is formed in a portion of the cylinder body 61 located inside the mouth portion 11. The outside air introduction hole 61a is a hole that communicates between the inside of the cylinder 60 and the inside of the container body 10. The outside air introduction hole 61a is closed by the piston 70 so as to be releasable from the radially inner side.

[0030] As shown in FIG. 1, the urging member 81 is housed inside the cylinder 60. More specifically, the urging member 81 is housed inside the cylinder main body 61. In this embodiment, the urging member 81 is a coil spring extending in the vertical direction. The lower end of the urging member 81 is supported from below by the support rib 62. The upper end of the urging member 81 contacts a stem 40 (described later) of the movable part 20a from below. The urging member 81 is in a state of being compressed elastically deformed in the vertical direction, and applies an upward elastic force to the stem 40.

[0031] The movable part 20a is movable downward in an upwardly biased state, and is rotatable within a predetermined range around the container axis (rotation axis) O. In this embodiment, the container axis O corresponds to a rotation axis extending in the up-down direction. The rotation axis may be provided at a position radially eccentric to the container axis O. As shown in FIG. 1, the movable part 20a has a discharge head 30 and a stem 40. The discharge head 30 and the stem 40 are fixed to each other. When the discharge head 30 is pushed downward by a user and moves downward, the stem 40 also moves downward together with the discharge head 30. When the discharge head 30 is rotated around the container axis O by a user, the stem 40 also rotates around the container axis O together with the discharge head 30.

[0032] The discharge head 30 is attached to the upper end of the stem 40. The discharge head 30 has a discharge port 30a for discharging the contents. The discharge head 30 is a cylindrical member with a top that opens downward. The discharge head 30 has a head main body portion 31 located above the stem 40, a cylindrical outer tube portion 32 that extends downward from the radial outer edge of the head main body portion 31, a nozzle portion 33 that protrudes radially outward from the head main body portion 31, and a fixed tube portion 34 that protrudes downward from the head main body portion 31.

[0033] The outer tube portion 32 is arranged coaxially with the container axis O and has a cylindrical shape that opens downward. The lower end of the outer tube portion 32 is inserted into the first guide tube portion 53 of the mounting cap 50. The outer tube portion 32 has a cylindrical tube main body portion 32a and a locking projection 32b that projects radially outward from the outer circumferential surface at the lower end of the tube main body portion 32a. As shown in FIG. 2, a pair of locking projections 32b are provided on either side of the container axis O in the radial direction. The pair of locking projections 32b are inserted into the pair of recesses 53a, respectively. The pair of locking projections 32b can move circumferentially within the pair of recesses 53a by rotating the movable portion 20a around the container axis O.

[0034] In this embodiment, the range in which the pair of locking projections 32b can move in the circumferential direction within the pair of recesses 53a is the predetermined range in which the movable part 20a can rotate around the container axis O. The movable part 20a can move in the circumferential direction from a first position P1 to a second position P2. The first position P1 is the circumferential position of the movable part 20a when each locking projection 32b is located at the end of the other circumferential side (-θ side) in each recess 53a. The second position P2 is the circumferential position of the movable part 20a when each locking projection 32b is located at the end of one circumferential side (+θ side) in each recess 53a. At the second position P2, each locking projection 32b overlaps in the vertical direction with the groove portion 53b that opens into each recess 53a. Each locking projection 32b has a size that allows it to be inserted in the vertical direction into each groove portion 53b.

[0035] When each locking projection 32b is located on the other circumferential side (-θ side) of the groove portion 53b in each recess 53a, that is, when the movable portion 20a is located on the other circumferential side of the second position P2, each locking projection 32b is arranged facing the upper side of the bottom surface 53d of each recess 53a. In this case, even if the movable portion 20a is pressed downward, each locking projection 32b is locked to the bottom surface 53d from above, and the movable portion 20a is restricted from moving downward. Each locking projection 32b is arranged slightly above the bottom surface 53d. Therefore, even when the movable portion 20a is located on the other circumferential side of the second position P2, the movable portion 20a is allowed to move slightly downward within a range until the locking projection 32b contacts the bottom surface 53d. The vertical distance between the locking projection 32b and the bottom surface 53d is equal to or greater than the vertical dimension of the first protrusion 41c described later. 2 shows a state in which the movable part 20a is located at the first position P1. Even at the first position P1, the pair of locking projections 32b are locked from above by the bottom surfaces 53d of the pair of recesses 53a, respectively. Therefore, when the movable part 20a is located at the first position P1, downward movement is restricted.

[0036] When the movable part 20a is located at the second position P2, when the movable part 20a is pressed downward, each locking protrusion 32b is inserted from the upper end into each groove 53b that opens into each recess 53a. Since each locking protrusion 32b is not locked to the bottom surface 53d and can move up and down in each groove 53b, the movable part 20a can move downward. In other words, the movable part 20a is allowed to move downward when located at the second position P2.

[0037] When the movable part 20a is rotated from the first position P1 to the second position P2, each of the locking projections 32b passes over each of the projections 53c formed in each of the recesses 53a in the circumferential direction just before the movable part 20a is positioned at the second position P2. The user can easily grasp that the movable part 20a has been moved to the second position P2 by feeling with his / her fingers when each of the locking projections 32b passes over each of the projections 53c transmitted from the movable part 20a. In addition, at the second position P2, each of the locking projections 32b is caught by each of the projections 53c from one circumferential side (+θ side), so that the movable part 20a moved to the second position P2 can be prevented from unintentionally moving to the other circumferential side from the second position P2.

[0038] As shown in Fig. 1, the fixed cylinder portion 34 is tubular and protrudes downward from the head main body portion 31. The fixed cylinder portion 34 is disposed coaxially with the container axis O and is cylindrical and opens downward. The fixed cylinder portion 34 is located radially inside the outer cylinder portion 32. The lower end portion of the fixed cylinder portion 34 is located higher than the lower end portion of the outer cylinder portion 32. The upper end portion of the stem 40 is fitted and fixed inside the fixed cylinder portion 34. The discharge port 30a extends in a substantially radial direction. The radial inner end of the discharge port 30a communicates with the inside of the stem 40 fixed to the inside of the fixed cylinder portion 34. The radial outer end of the discharge port 30a opens to the radial outer end of the nozzle portion 33.

[0039] The upper end of the stem 40 is fixed to the discharge head 30. The stem 40 is inserted into the cylinder 60 from above. The stem 40 is arranged so as to be movable downward in an upwardly biased state. In this embodiment, the stem 40 is biased upward by a biasing member 81. The stem 40 has a first tube portion 41 and a second tube portion 42. The first tube portion 41 and the second tube portion 42 are cylindrical and extend in the vertical direction. In this embodiment, the first tube portion 41 and the second tube portion 42 are arranged coaxially with the container axis O and are cylindrical and open on both sides in the vertical direction. The upper end of the first tube portion 41 is fitted and fixed in the fixed tube portion 34. As shown in FIG. 3, the lower part of the first tube portion 41 is inserted into the second guide tube portion 56. A gap 91 that opens on both sides in the vertical direction is formed between the outer circumferential surface of the first tube portion 41 and the inner circumferential surface of the second guide tube portion 56. The gap 91 allows a portion of the interior of the cylinder 60 between the piston 70 and the first cylindrical portion 41 in the vertical direction to communicate with the interior of the first guide cylindrical portion 53 .

[0040] A step portion 41g having an upwardly facing step surface 41h is formed on the outer peripheral surface of a portion of the first cylindrical portion 41 located inside the second guide cylindrical portion 56. The outer diameter of a portion of the first cylindrical portion 41 located below the step surface 41h is larger than the outer diameter of a portion of the first cylindrical portion 41 located above the step surface 41h. The step surface 41h is annular and arranged coaxially with the container axis O. The step surface 41h is arranged below and facing a step surface 56h formed on the inner peripheral surface of the second guide cylindrical portion 56.

[0041] The step surface 41h is formed with a first protrusion 41c that protrudes upward. As shown in FIG. 4, a plurality of first protrusions 41c are formed in a line in the circumferential direction. The first protrusions 41c adjacent to each other in the circumferential direction are arranged with a small gap between them. The first protrusions 41c adjacent to each other in the circumferential direction may be adjacent to each other. In this embodiment, for example, a pair of first protrusion groups 41i each consisting of a plurality of first protrusions 41c formed in a line in the circumferential direction are formed on either side of the container axis O. In this embodiment, the number of first protrusions 41c included in each first protrusion group 41i is three. The plurality of first protrusions 41c are arranged in a line in the circumferential direction to form a mountain-valley shape in which a mountain shape protruding upward and a valley shape recessed downward are alternately provided in the circumferential direction. Each first protrusion group 41i is arranged below and facing each second protrusion group 56i each consisting of a plurality of second protrusions 56c.

[0042] In this embodiment, the first protrusion 41c has a rounded triangular shape that protrudes upward when viewed from the radial direction. The first protrusion 41c has a first surface (inclined surface) 41d, a second surface (inclined surface) 41e, and a top 41f. The first surface 41d is a surface on one circumferential side (+θ side) of the first protrusion 41c. The second surface 41e is a surface on the other circumferential side (-θ side) of the first protrusion 41c. The first surface 41d and the second surface 41e are inclined surfaces that are inclined in the circumferential direction with respect to a surface that is perpendicular to the circumferential direction and extends in the up-down direction. The first surface 41d is located on the other circumferential side as it goes upward. The second surface 41e is located on one circumferential side as it goes upward. The top 41f is the upper end portion that is located at the top of the first protrusion 41c. The top 41f is an arc shape that protrudes upward when viewed from the radial direction. The upper end of the first surface 41d and the upper end of the second surface 41e are connected to each other via a vertex 41f.

[0043] The first protrusions 41c are located below the second protrusions 56c. The first protrusions 41c and the second protrusions 56c are engaged with each other. The first protrusions 41c include first protrusions 41c located between the second protrusions 56c adjacent to each other in the circumferential direction. The second protrusions 56c include second protrusions 56c located between the first protrusions 41c adjacent to each other in the circumferential direction. Each first protrusion 41c can come into contact with the second protrusions 56c adjacent to each other in the circumferential direction. In the first protrusions 41c located between the second protrusions 56c adjacent to each other in the circumferential direction, the first surface 41d faces the second surface 56e of one of the second protrusions 56c in the circumferential direction, and the second surface 41e faces the first surface 56d of the other of the second protrusions 56c in the circumferential direction. In the first protrusion 41c located between the second protrusions 56c adjacent in the circumferential direction, the top 41f is in contact with a portion of the step surface 56h located between the second protrusions 56c adjacent in the circumferential direction. In the second protrusion 56c located between the first protrusions 41c adjacent in the circumferential direction, the first surface 56d faces the second surface 41e of one of the first protrusions 41c in the circumferential direction, and the second surface 56e faces the first surface 41d of the other first protrusion 41c in the circumferential direction. In the second protrusion 56c located between the first protrusions 41c adjacent in the circumferential direction, the top 56f is in contact with a portion of the step surface 41h located between the first protrusions 41c adjacent in the circumferential direction. The first protrusion 41c can climb over the second protrusion 56c in the circumferential direction when the movable part 20a is rotated around the container axis O.

[0044] 4, a gap is provided between the first surface 41d and the second surface 56e that face each other in the circumferential direction, and between the first surface 56d and the second surface 41e that face each other in the circumferential direction, but this is not limited thereto, and the surfaces that face each other in the circumferential direction may be in contact with each other. In other words, the first surface 41d, 56d and the second surface 41e, 56e can be in contact with the other of the first convex portion 41c and the second convex portion 56c in the circumferential direction.

[0045] As shown in Fig. 1, an upper portion of the second cylindrical portion 42 is fitted and fixed in the first cylindrical portion 41. The second cylindrical portion 42 protrudes downward further than the first cylindrical portion 41. A lower portion of the second cylindrical portion 42 is located inside the cylinder 60. As shown in Fig. 3, the second cylindrical portion 42 has a cylindrical main body portion 42a, an engagement protrusion portion 42b protruding radially outward from the lower end portion of the cylindrical main body portion 42a, and a tip cylindrical portion 42c connected to the lower portion of the cylindrical main body portion 42a.

[0046] A communication hole 42d is formed in the tube main body 42a. The communication hole 42d is formed in a portion of the tube main body 42a that is located below the first tube portion 41 and above the engagement protrusion 42b. The communication hole 42d penetrates the wall portion that forms the tube main body 42a in the radial direction from the outer peripheral surface to the inner peripheral surface. The communication hole 42d is a hole that communicates the inside of the stem 40 with the inside of the cylinder 60 when the movable portion 20a is pressed downward. In this embodiment, the communication hole 42d communicates the inside of the second tube portion 42 with the inside of the cylinder 60 when the movable portion 20a is pressed downward. The communication hole 42d is releasably closed by the piston 70 from the radial outside. The communication hole 42d is opened by the second tube portion 42 moving downward relative to the piston 70.

[0047] The engagement protrusion 42b engages with the piston 70 from below. The upper surface of the engagement protrusion 42b is an inclined surface that is positioned downward toward the outside in the radial direction. The engagement protrusion 42b is annular and disposed coaxially with the container axis O. The tip tube portion 42c is positioned slightly radially inward as it extends downward from the lower end of the tube main body portion 42a. A contact protrusion 42e is formed on the inner peripheral surface of the tip tube portion 42c, and contacts the outer peripheral surface of the valve member 80. The contact protrusion 42e is annular and arranged coaxially with the container axis O.

[0048] The piston 70 is an annular member surrounding the container axis O. The piston 70 is fitted to the inner peripheral surface of the cylinder 60 so as to be vertically slidable. The piston 70 is fitted to the outer peripheral surface of the second cylindrical portion 42 of the stem 40 so as to be vertically slidable. The piston 70 is located radially between the second cylindrical portion 42 and the cylinder 60. The piston 70 is located below the first cylindrical portion 41 and the second guide cylindrical portion 56. The piston 70 moves vertically in conjunction with the vertical movement of the movable portion 20a.

[0049] The piston 70 has a base 71, an outer piston cylindrical portion 72, and an inner piston cylindrical portion 73. The outer piston cylindrical portion 72 and the inner piston cylindrical portion 73 are connected to each other in the radial direction via the base 71. The outer piston cylindrical portion 72 and the inner piston cylindrical portion 73 are cylindrical and arranged coaxially with the container axis O. The outer piston cylinder portion 72 protrudes on both sides in the up-down direction from the base portion 71. The portion of the outer piston cylinder portion 72 located above the base portion 71 is positioned radially outward as it moves upward. The upper end portion of the outer piston cylinder portion 72 contacts the inner circumferential surface of the cylinder 60. The upper end portion of the outer piston cylinder portion 72 is disposed below and facing the lower end portion of the second guide cylinder portion 56. When the discharger 20 is not in use, the upper end portion of the outer piston cylinder portion 72 contacts the lower end portion of the second guide cylinder portion 56. The portion of the outer piston cylinder portion 72 located below the base portion 71 is positioned radially outward as it moves downward. The lower end portion of the outer piston cylinder portion 72 contacts the inner circumferential surface of the cylinder 60.

[0050] The upper end of the outer piston cylinder portion 72 contacts a portion of the inner circumferential surface of the cylinder 60 that is located above the outside air introduction hole 61a, and the lower end of the outer piston cylinder portion 72 contacts a portion of the inner circumferential surface of the cylinder 60 that is located below the outside air introduction hole 61a, so that the outside air introduction hole 61a is closed from the radially inner side by the piston 70. When the movable portion 20a is pressed downward, the piston 70 moves downward, and the portion of the upper end of the outer piston cylinder portion 72 that contacts the inner circumferential surface of the cylinder 60 is positioned below the upper end of the radially inner opening of the outside air introduction hole 61a, the outside air introduction hole 61a is opened.

[0051] The inner piston cylinder portion 73 is located radially inward of the outer piston cylinder portion 72. The inner piston cylinder portion 73 protrudes upward more than the outer piston cylinder portion 72. The upper part of the inner piston cylinder portion 73 is located radially inward as it goes upward. The upper end portion of the inner piston cylinder portion 73 contacts the outer peripheral surface of the second cylinder portion 42 of the stem 40. The upper end portion of the inner piston cylinder portion 73 is disposed opposite to the lower end portion of the first cylinder portion 41. The lower end portion of the inner piston cylinder portion 73 is located above the lower end portion of the outer piston cylinder portion 72. The lower end portion of the inner piston cylinder portion 73 is located above the engagement protrusion portion 42b. The lower end portion of the inner piston cylinder portion 73 contacts the outer peripheral surface of the second cylinder portion 42 of the stem 40.

[0052] The upper end of the inner piston cylinder portion 73 contacts a portion of the outer circumferential surface of the second cylinder portion 42 that is located above the communication hole 42d, and the lower end of the inner piston cylinder portion 73 contacts a portion of the outer circumferential surface of the second cylinder portion 42 that is located below the communication hole 42d, so that the communication hole 42d is closed from the radially outer side by the piston 70. When the movable portion 20a is pressed downward so that the lower end of the radially outer opening of the communication hole 42d moves below the portion of the lower end of the inner piston cylinder portion 73 that contacts the outer circumferential surface of the second cylinder portion 42, the communication hole 42d is opened.

[0053] In addition, "piston 70 moves vertically in coordination with the vertical movement of movable part 20a" means that piston 70 is capable of moving vertically in relation to the vertical movement of movable part 20a, and movable part 20a may be capable of moving vertically relative to piston 70 during part of the movement of movable part 20a between the uppermost and lowermost positions.

[0054] In this embodiment, when the discharger 20 is not operated, the piston 70 is disposed downwardly and apart from the first cylindrical portion 41. When the movable portion 20a is further moved downward in a state in which the movable portion 20a moves downward and the first cylindrical portion 41 contacts the inner piston cylindrical portion 73 from above, the piston 70 moves downward together with the movable portion 20a. When the piston 70 is pushed downward by the movable portion 20a from above, the lower end portion of the inner piston cylindrical portion 73 is disposed upwardly and apart from the engaging protrusion 42b. When the movable portion 20a is moved upward by the upward elastic force received from the biasing member 81 from the state in which the piston 70 is pushed downward by the movable portion 20a from above, the movable portion 20a moves upward relative to the piston 70, and the engaging protrusion 42b contacts the lower end portion of the inner piston cylindrical portion 73 from below. When the movable portion 20a moves further upward in this state, the piston 70 moves upward together with the movable portion 20a. When no downward external force is applied to the movable part 20a, the movable part 20a and the piston 70 move upward due to the upward elastic force received from the biasing member 81 until the upper end of the outer piston cylinder part 72 contacts the lower end of the second guide cylinder part 56 of the mounting cap 50 from below. In this way, the piston 70 moves up and down in coordination with the up and down movement of the movable part 20a.

[0055] In a state where the dispenser 20 is not operated, the vertical distance between the upper end of the inner piston cylinder portion 73 of the piston 70 and the lower end of the first cylinder portion 41 of the stem 40 is greater than the vertical distance between the locking projection 32b and the bottom surface 53d. Therefore, in a state where the locking projection 32b is disposed facing the upper side of the bottom surface 53d, even if the movable portion 20a moves slightly downward within a range until the locking projection 32b contacts the bottom surface 53d, the lower end of the first cylinder portion 41 does not contact the upper end of the inner piston cylinder portion 73. Therefore, in a state where the locking projection 32b is disposed facing the upper side of the bottom surface 53d, even if the movable portion 20a moves slightly downward within a range until the locking projection 32b contacts the bottom surface 53d, the piston 70 does not move downward, and the outside air introduction hole 61a is not opened.

[0056] In addition, when the dispenser 20 is not being operated, the vertical distance between the portion of the upper end of the outer piston cylindrical portion 72 that contacts the inner circumferential surface of the cylinder 60 and the upper end of the radially inner opening of the outside air introduction hole 61a is greater than the vertical distance between the locking projection 32b and the bottom surface 53d. Therefore, when the locking projection 32b is disposed facing the upper side of the bottom surface 53d and the movable portion 20a moves slightly downward within a range until the locking projection 32b contacts the bottom surface 53d, the outside air introduction hole 61a is not opened even if the piston 70 moves slightly downward together with the movable portion 20a.

[0057] As shown in FIG. 1, the valve member 80 is columnar and extends in the vertical direction. In this embodiment, the valve member 80 is substantially cylindrical and arranged coaxially with the container axis O. The valve member 80 is located inside the cylinder 60. As shown in FIG. 3, the upper end of the valve member 80 is fitted into the tip tube portion 42c. The contact protrusion 42e formed on the inner peripheral surface of the tip tube portion 42c contacts the outer peripheral surface of the valve member 80 over the entire circumferential direction. As a result, the lower end of the inside of the stem 40 is blocked by the valve member 80.

[0058] The valve member 80 can move up and down inside the cylinder 60. As shown in FIG. 1, when the dispenser 20 is not operated, the lower end of the valve member 80 is disposed above and away from the valve seat 61c provided on the cylinder 60. When the movable part 20a is moved downward, the valve member 80 moves downward together with the movable part 20a due to the frictional force generated between the contact protrusion 42e and the valve member 80, and the lower end of the valve member 80 contacts the valve seat 61c from above. As a result, the inlet port 61b formed in the cylinder 60 is closed by the valve member 80. When the movable part 20a is further moved downward in a state in which the lower end of the valve member 80 contacts the valve seat 61c from above, the contact protrusion 42e slides downward against the outer circumferential surface of the valve member 80, and the movable part 20a moves downward relative to the valve member 80. When the movable part 20a is moved upward by the elastic force of the biasing member 81, the valve member 80 moves upward together with the movable part 20a due to the frictional force generated between the contact protrusion 42e and the valve member 80. This opens the inlet part 61b.

[0059] The discharger 20 is formed with an outside air introduction passage 90 that connects the outside of the container body 10 to the inside of the container body 10 when the piston 70 is pushed down in conjunction with the downward movement of the movable part 20a. The outside air introduction passage 90 is formed by a gap between the outer circumferential surface of the outer tube part 32 of the discharge head 30 and the inner circumferential surface of the first guide tube part 53 of the mounting cap 50, the inside of the first guide tube part 53, a gap 91 between the outer circumferential surface of the first tube part 41 and the inner circumferential surface of the second guide tube part 56, a part of the inside of the cylinder 60 that is located between the piston 70 and the second tube part 42, and the outside air introduction hole 61a. The outside air introduction passage 90 communicates the outside of the discharge container 100 to the inside of the container body 10 when the piston 70 moves downward and the outside air introduction hole 61a is opened.

[0060] The state of the dispenser 20 shown in Figs. 1 to 4 is a state in which the movable part 20a is located at the first position P1 and the downward movement of the movable part 20a is restricted. As shown in Figs. 5 and 6, the user rotates the discharge head 30 around the container axis O in one circumferential direction (towards the +θ side) to move the circumferential position of the movable part 20a from the first position P1 to the second position P2. At this time, by rotating the movable part 20a in one circumferential direction, the first convex part 41c provided on the movable part 20a tries to move relatively to one circumferential direction side with respect to the second convex part 56c provided on the mounting cap 50. As a result, the first surface 41d of the first convex part 41c is pressed against the second surface 56e of the second convex part 56c from the other circumferential direction side, and the first convex part 41c moves downward along the second surface 56e in one circumferential direction. As the first protrusion 41c moves downward, the entire movable part 20a moves downward. When the first protrusion 41c moves downward relative to the second protrusion 56c toward one side in the circumferential direction, the apex 41f of the first protrusion 41c rides up on the apex 56f of the second protrusion 56c, as shown in FIG. 7. When the first protrusion 41c rides up on the second protrusion 56c, the communication hole 42d moves downward relative to the piston 70, as shown in FIG. 8, and the lower end of the communication hole 42d is opened. As a result, the inside of the stem 40 and the inside of the cylinder 60 are communicated via the communication hole 42d.

[0061] When the movable part 20a is further rotated toward one side in the circumferential direction, the apex 41f of the first convex part 41c is located on one side in the circumferential direction relative to the apex 56f of the second convex part 56c, and the movable part 20a moves upward due to the upward elastic force of the urging member 81, and the first convex part 41c and the second convex part 56c mesh with each other again. As a result, the communication hole 42d is closed again by the piston 70. In this manner, the movable part 20a is rotated around the container axis O, and the first convex part 41c rides over the second convex part 56c in the circumferential direction. In this embodiment, the first convex part 41c and the second convex part 56c are formed in a plurality of positions in the circumferential direction, so that the first convex part 41c rides over the second convex part 56c in the circumferential direction two or more times while the movable part 20a moves from the first position P1 to the second position P2. Each time the first protrusion 41c passes over the second protrusion 56c in the circumferential direction, the communication hole 42d is switched between an open state and a closed state.

[0062] When the movable part 20a is located at the first position P1, the communication hole 42d is closed. When the movable part 20a is located at the second position P2 and the movable part 20a is not pressed downward, the communication hole 42d is closed.

[0063] When the movable part 20a is rotated to the second position P2, the movable part 20a is allowed to move downward. In this state, the user pushes the discharge head 30 downward to push the movable part 20a downward. When the movable part 20a is pushed downward, the stem 40 moves downward relative to the piston 70, and after the communication hole 42d is opened, the lower end of the second cylindrical part 42 of the stem 40 comes into contact with the piston 70 from above. In addition, the valve member 80 moves downward together with the stem 40, and the inlet part 61b is closed by the valve member 80. When the movable part 20a is pushed further downward in this state, the piston 70 moves downward together with the movable part 20a, and the inside of the cylinder 60 is pressurized with the downward movement of the piston 70. As a result, the contents in the cylinder 60 flow into the stem 40 from the communication hole 42d and flow upward inside the stem 40. The contents flowing upward through stem 40 are discharged from outlet 30a. In this manner, the user can discharge the contents from outlet 30a. When movable part 20a and piston 70 are pressed down until the contents are discharged from outlet 30a, outside air introduction hole 61a is open, and outside air introduction path 90 connects the outside of container body 10 to the inside of container body 10.

[0064] After discharging the contents, when the user releases the force applied to the discharge head 30, the movable part 20a moves upward due to the upward elastic force applied from the biasing member 81 to the stem 40. When the movable part 20a moves upward, the engagement protrusion 42b engages with the piston 70 from below, and the piston 70 moves upward together with the movable part 20a. In addition, the valve member 80 moves upward together with the movable part 20a, and the inlet port part 61b is opened. When the piston 70 moves upward, the part inside the cylinder 60 located below the piston 70 becomes negative pressure, so that the contents in the container body 10 are sucked up from the inlet port part 61b into the cylinder 60 via the suction tube 64. As the contents in the container body 10 are sucked up into the cylinder 60, outside air is introduced into the container body 10 via the outside air introduction path 90.

[0065] According to this embodiment, the dispenser 20 is formed with an outside air introduction passage 90 that communicates the outside of the container body 10 with the inside of the container body 10 when the piston 70 is pushed downward in conjunction with the downward movement of the movable part 20a. The stem 40 is formed with a communication hole 42d that is releasably closed by the piston 70 and communicates the inside of the stem 40 with the inside of the cylinder 60 when the movable part 20a is pushed downward. The movable part 20a has a first protrusion 41c that protrudes upward and is rotatable around a rotation axis that extends in the vertical direction, i.e., the container axis O. The mounting cap 50 has a second protrusion 56c that protrudes downward. The first protrusion 41c can contact the second protrusion 56c in the circumferential direction around the container axis O, and can overcome the second protrusion 56c in the circumferential direction when the movable part 20a is rotated around the container axis O. In a state where the first convex portion 41c rides on the second convex portion 56c, the stem 40 moves downward relative to the piston 70 to open the communication hole 42d, and the inside of the stem 40 and the inside of the cylinder 60 are communicated through the communication hole 42d. Therefore, as described above, the user can rotate the movable part 20a around the container axis O to make the first convex portion 41c ride on the second convex portion 56c, thereby making it possible to communicate the inside of the stem 40 and the inside of the cylinder 60 through the communication hole 42d in a state where communication between the outside of the container body 10 and the inside of the container body 10 through the outside air introduction path 90 is blocked. As a result, even if, for example, part of the contents has volatilized and the pressure in the container body 10 has increased, the air in the cylinder 60, the contents in the cylinder 60, or the gas volatilized in the cylinder 60 can be released into the stem 40 through the communication hole 42d, as shown by the arrow G in FIG. 8. This allows the pressure in the container body 10, which is connected to the inside of the cylinder 60, to be released to the outside, and the pressure in the container body 10 can be reduced. Therefore, the user can rotate the movable part 20a around the container axis O to reduce the pressure in the container body 10 before discharging the contents, thereby preventing the air and contents in the container body 10 from flowing back through the outside air introduction path 90 when discharging the contents. Therefore, when the user uses the dispenser 20, it is possible to prevent the contents from leaking to the outside through the outside air introduction path 90.

[0066] In particular, when an unused discharge container 100 is in circulation, the pressure inside the container body 10 is likely to increase. Therefore, the effect of reducing the pressure inside the container body 10 by rotating the movable part 20a described above is particularly useful when a user uses an unused discharge container 100 that has been in circulation for the first time. In the unused discharge container 100, gas such as air is sealed inside the cylinder 60. Therefore, when the movable part 20a is rotated from the first position P1 to the second position P2, if the first convex part 41c rides on the second convex part 56c, the gas inside the cylinder 60 flows into the stem 40 through the communication hole 42d, and the gas can be released from the stem 40 to the outside of the discharge container 100 through the discharge port 30a. This allows the pressure inside the container body 10 to be reduced.

[0067] According to this embodiment, the movable part 20a can move from the first position P1 to the second position P2 in the circumferential direction, and downward movement is restricted when the movable part 20a is located at the first position P1, and downward movement is permitted when the movable part 20a is located at the second position P2. While the movable part 20a moves from the first position P1 to the second position P2, the first convex part 41c rides over the second convex part 56c in the circumferential direction. Therefore, when the user rotates the movable part 20a from the first position P1 to the second position P2 to make the movable part 20a in a state in which it can be pressed down, that is, in a state in which the contents can be discharged, the first convex part 41c rides over the second convex part 56c during the operation, and the pressure inside the container body 10 can be reduced by opening the communication hole 42d. This prevents the movable part 20a from being pushed down when the pressure inside the container body 10 has not decreased, and further prevents the air and contents inside the container body 10 from flowing back through the outside air introduction path 90.

[0068] In particular, by setting the circumferential position of the movable part 20a to the first position P1 in the unused dispensing container 100 that is being distributed, a user must rotate the movable part 20a from the first position P1 to the second position P2 when using the unused dispensing container 100 for the first time. As a result, even if the pressure inside the container body 10 of the dispensing container 100 is high during distribution, the pressure inside the container body 10 can be reduced as described above before the user discharges the contents for the first time. Therefore, when the user uses the dispensing container 100 for the first time, leakage of the contents to the outside through the outside air introduction path 90 can be suitably suppressed. Note that, after using the dispensing container 100 for the first time, the user may leave the circumferential position of the movable part 20a at the second position P2 without returning it to the first position P1, or may rotate the movable part 20a to return the circumferential position of the movable part 20a from the second position P2 to the first position P1 after using the dispensing container 100 for the first time.

[0069] According to this embodiment, the first convex portion 41c and the second convex portion 56c are formed in a plurality of positions in the circumferential direction. The first convex portion 41c passes over the second convex portion 56c in the circumferential direction two or more times while the movable portion 20a moves from the first position P1 to the second position P2. Therefore, when the user rotates the movable portion 20a from the first position P1 to the second position P2 to make the movable portion 20a in a state where it can be pressed down, the communication hole 42d is opened two or more times to reduce the pressure in the container body 10. This makes it possible to more suitably reduce the pressure in the container body 10, and more suitably suppress the air and contents in the container body 10 from flowing back through the outside air introduction passage 90.

[0070] According to this embodiment, the first convex portion 41c and the second convex portion 56c have the first surface 41d, 56d and the second surface 41e, 56e, respectively, as inclined surfaces that can contact the other convex portion of the first convex portion 41c and the second convex portion 56c in the circumferential direction. The first surface 41d, 56d and the second surface 41e, 56e are inclined in the circumferential direction with respect to a surface that is perpendicular to the circumferential direction and extends in the up-down direction. Therefore, when the first convex portion 41c moves relative to the second convex portion 56c in the circumferential direction, the first convex portion 41c can be easily moved downward relative to the second convex portion 56c along the first surface 41d, 56d and the second surface 41e, 56e. Therefore, the first convex portion 41c can easily ride over the second convex portion 56c.

[0071] <Second embodiment> As shown in FIG. 9, in the dispenser 220 in the discharge container 200, the mounting cap 250 has a cap body 250a and a cover cap 250b. The cap body 250a has the same configuration as the mounting cap 50 of the first embodiment, except that the second convex portion 56c is not formed on the second guide tube portion 256. The cover cap 250b covers the cap body 250a from the radial outside. The cover cap 250b is tubular and opens on both sides in the vertical direction. In this embodiment, the cover cap 250b is cylindrical and arranged coaxially with the container axis O. The cover cap 250b has a cylindrical cover tube portion 257 that opens on both sides in the vertical direction, and a visor portion 258 that protrudes radially inward from the upper end portion of the cover tube portion 257. The visor portion 258 contacts the upper end portion of the first guide tube portion 53 from above.

[0072] As shown in FIG. 10, a second protrusion 258a protruding downward is formed on a portion of the lower surface of the overhanging portion 258 that faces the upper side of the bottom surface 53d of the recess 53a. A plurality of second protrusions 258a are formed side by side in the circumferential direction. The second protrusions 258a adjacent to each other in the circumferential direction are adjacent to each other. The second protrusions 258a are triangular with rounded corners that protrude downward when viewed from the radial direction. A through portion 258b that penetrates the overhanging portion 258 in the up-down direction is formed on a portion of the overhanging portion 258 that is located above the groove portion 53b.

[0073] In the movable part 220a of this embodiment, a first protrusion 232d protruding upward is formed on the upper surface of the locking projection 232b of the discharge head 230. The first protrusion 232d is located between the second protrusions 258a adjacent to each other in the circumferential direction, and contacts both of the second protrusions 258a adjacent to each other in the circumferential direction in the circumferential direction. By rotating the movable part 220a around the container axis O in the circumferential direction, the first protrusion 232d can get over the second protrusions 258a in the circumferential direction. In this embodiment, one first protrusion 232d is provided for one second protrusion group composed of a plurality of second protrusions 258a.

[0074] Other configurations of the locking protrusion 232b are similar to other configurations of the locking protrusion 32b in the first embodiment. Other configurations of the movable part 220a are similar to other configurations of the movable part 20a in the first embodiment. Other configurations of the dispenser 220 are similar to other configurations of the dispenser 20 in the first embodiment. Other configurations of the discharge container 200 are similar to other configurations of the discharge container 100 in the first embodiment.

[0075] In this embodiment, the first convex portion 232d climbs over the second convex portion 258a while the movable portion 220a is rotated to a position where the locking projection 32b faces the groove portion 53b in the vertical direction. Therefore, when the first convex portion 232d climbs over the second convex portion 258a, the communication hole 42d is opened, and the pressure inside the container body 10 can be reduced. Therefore, it is possible to prevent the air and the contents inside the container body 10 from flowing back through the outside air introduction path 90 when the contents are discharged.

[0076] The present invention is not limited to the above-described embodiment, and the following configurations and methods may also be adopted. As long as the first convex portion can overcome the second convex portion in the circumferential direction, the shape of the first convex portion and the shape of the second convex portion are not particularly limited. Only one of the first convex portion and the second convex portion may have an inclined surface that is inclined in the circumferential direction with respect to a surface that is perpendicular to the circumferential direction and extends in the up-down direction. If the first convex portion is provided on the movable portion, it may be provided at any position on the movable portion. If the second convex portion is provided on the mounting cap, it may be provided at any position on the mounting cap. Only one of the first convex portion and the second convex portion may be formed in a plurality of convex portions aligned in the circumferential direction, and only one convex portion may be formed on the other. The range in which the movable portion can rotate is not particularly limited. The dispenser may not have a structure that restricts the downward movement of the movable portion. The configurations described in this specification can be combined with each other as long as they are not contradictory to each other. [Explanation of symbols]

[0077] 10...container body, 11...mouth, 20, 220...discharger, 20a, 220a...movable part, 30...discharge head, 30a...discharge port, 40...stem, 41c, 232d...first convex part, 41d, 56d...first surface (inclined surface), 41e, 56e...second surface (inclined surface), 42d...communication hole, 50, 250...mounting cap, 56c, 258a...second convex part, 60...cylinder, 70...piston, 90...external air introduction passage, O...container axis (rotation axis), P1...first position, P2...second position

Claims

1. A dispenser attached to a mouth of a container body in which a content is contained, a movable portion including a stem arranged to be movable downward in an upwardly biased state, and a discharge head attached to an upper end of the stem, the discharge head having a discharge port for discharging the content; An attachment cap attached to the mouth portion; A cylindrical cylinder into which the stem is inserted; a piston that is fitted to an inner circumferential surface of the cylinder so as to be vertically slidable and that moves vertically in conjunction with the vertical movement of the movable part; Equipped with When the piston is pushed downward in conjunction with the downward movement of the movable part, an outside air introduction passage is formed that connects the outside of the container body with the inside of the container body, a communication hole is formed in the stem, the communication hole being releasably closed by the piston and communicating between an inside of the stem and an inside of the cylinder when the movable part is pressed downward; the movable portion has a first protrusion protruding upward and is rotatable about a rotation axis extending in a vertical direction; The mounting cap has a second protrusion protruding downward, the first convex portion is capable of contacting the second convex portion in a circumferential direction about the rotation axis and is capable of climbing over the second convex portion in the circumferential direction when the movable portion is rotated about the rotation axis, an ejector in which, when the first convex portion rides on the second convex portion, the stem moves downward relative to the piston to open the communication hole, and the inside of the stem and the inside of the cylinder are connected via the communication hole.

2. The movable part is movable from a first position to a second position in the circumferential direction; When the movable member is located at the first position, downward movement is restricted, and When the movable member is in the second position, the movable member is permitted to move downward. The dispenser according to claim 1 , wherein the first convex portion overcomes the second convex portion in the circumferential direction while the movable portion moves from the first position to the second position.

3. At least one of the first convex portion and the second convex portion is formed in a plurality of portions aligned in the circumferential direction, The dispenser according to claim 2 , wherein the first convex portion passes over the second convex portion in the circumferential direction two or more times while the movable portion moves from the first position to the second position.

4. At least one of the first convex portion and the second convex portion has an inclined surface capable of contacting the other convex portion of the first convex portion and the second convex portion in the circumferential direction, The discharge device according to claim 1 , wherein the inclined surface is inclined in the circumferential direction with respect to a plane perpendicular to the circumferential direction and extending in a vertical direction.

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