Normal standing / reversing discharger

Abstract

To provide a normal standing / reversing discharger for which a height dimension is suppressed by reducing the number of components and assembling man-hours.SOLUTION: A normal standing / reversing discharger 100 comprises: a fitting member 3 fitted to a container body C; a cylinder 1 suspending downward from the fitting member 3; a plunger body 11 erected from an inside of the cylinder 1; a cylindrical stem 9 provided so as to be vertically movable with respect to the cylinder 1; and a head part 30 attached to an upper portion of the stem 9 so as to make it possible to push down, and having a nozzle for discharging a content solution. An outside air introduction hole 1d is provided at a side part of the cylinder 1. The plunger body 11 has: a normal standing state suction valve for controlling a flow of the content solution in a vertical direction; an upper-side piston 14 sliding on an inner face of the cylinder 1 and capable of closing the outside air introduction hole 1d; and a lower-side piston 11d sliding on the inner face of the cylinder 1 below the upper-side piston 14. An easily-deformable part 14b1 for opening the outside air introduction hole 1d through deformation caused by a negative pressure inside the cylinder 1 is provided in the upper-side piston 14.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present disclosure relates to an inverted dispenser that is attached to the mouth of a container body and ejects the liquid content within the container body to the outside. [Background technology]

[0002] As a conventional upright inverted dispenser, for example, Patent Document 1 discloses a upright inverted dispenser that is provided with an inverted suction port for smoothly supplying the liquid content contained in the container body into the cylinder even when the container body is in an inverted position, and is configured so that when in the upright position, flow path switching valve V3 is opened to suck liquid into the cylinder from the upright suction port, and when in the inverted position, flow path switching valve V4 is opened to suck liquid into the cylinder from the inverted suction port. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2014-213943 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the case of the forward inverted dispenser of Patent Document 1, a forward inverted adapter is used to realize the forward inverted dispenser, which may increase the number of parts and assembly steps, or may result in a large vertical height dimension, leaving room for improvement in these respects.

[0005] An object of the present disclosure is to provide a forward inverted dispenser that reduces the number of parts and assembly steps and that has a reduced height dimension. [Means for solving the problem]

[0006] In order to solve the above problems, the inverted ejector of the present disclosure comprises: [1] An attachment member to be attached to the mouth of the container body; a cylinder depending downwardly from the mounting member; a plunger body that is biased upward relative to the cylinder and is movable up and down, and stands up from inside the cylinder; A cylindrical stem that is movable up and down relative to the cylinder; A head portion which is attached to the upper portion of the stem in a depressable manner and has a nozzle for discharging the content liquid; an outside air introduction valve that seals a gap between the cylinder and the stem, allowing outside air to be introduced into the container body through an outside air introduction hole provided on a side of the cylinder and suppressing leakage of the content liquid from the container body through the outside air introduction hole; A forward inverted dispenser comprising: The plunger body is an upright intake valve that controls the flow of the content liquid in the vertical direction inside the vertically extending cylindrical portion; an upper piston that slides on an inner surface of the cylinder and is capable of closing the outside air introduction hole from the inside when the head portion is in a raised position; a lower piston that slides on the inner surface of the cylinder below the upper piston; having The upper piston is provided with an easily deformable portion that deforms inward due to negative pressure in the cylinder to open the outside air introduction hole, The lower end opening of the cylindrical portion of the plunger body is closed by an inverted blocking valve when the normal inverted dispenser is in an inverted position.

[0007] In addition, the inverted ejector of the present disclosure is [2] In the configuration described in [1] above, it is preferable that the upper piston has an upper sliding portion and a lower sliding portion that slide on the inner surface of the cylinder, and the easily deformable portion is provided by thinning a circumferential position of the lower sliding portion corresponding to the outside air introduction hole.

[0008] In addition, the inverted ejector of the present disclosure is [3] In the configuration described in [1] or [2] above, it is preferable that the upper piston descends later than the main body of the plunger body when the plunger body descends.

[0009] In addition, the inverted ejector of the present disclosure is [4] In the configuration described in [2] above, it is preferable that the cylinder has a large diameter cylinder, a small diameter cylinder having an inner diameter smaller than that of the large diameter cylinder, and a sub-cylinder provided at the lower part of the stem and movable in the vertical direction within the large diameter cylinder, and that the upper sliding portion of the upper piston slides on the inner surface of the sub-cylinder, the lower sliding portion of the upper piston slides on the inner surface of the large diameter cylinder, and the lower piston slides on the inner surface of the small diameter cylinder. Effect of the Invention

[0010] According to the present disclosure, it is possible to provide a forward inverted dispenser that reduces the number of parts and assembly steps and has a reduced height dimension. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is a front cross-sectional view of an inverted dispenser according to an embodiment of the present disclosure. [Diagram 2] 2 is an enlarged front sectional view of an upper piston region in FIG. 1. [Diagram 3] FIG. 3 is a view taken along the arrow A in FIG. 2. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, a forward inverted dispenser 100 according to an embodiment of the present disclosure will be described in detail with reference to the drawings (FIGS. 1 to 3).

[0013] In Fig. 1, reference numeral 1 denotes a cylinder having a flange 2 disposed at the upper end of the mouth C2 of the container body C via a packing PK, and hanging down through the inside of the mouth C2 of the container body C from a mounting member 3 described later. The cylinder 1 includes a bottomed cylindrical cylinder body 1a, a fitting tube portion 1f into which a pipe P is fitted to guide the content liquid into the cylinder 1 in the upright position of the upright inverted dispenser 100, an outside air introduction hole 1d provided at the side of the cylinder body 1a, and a sub-cylinder 7 provided at the lower part of a stem 9 described later and movable up and down in a large diameter cylinder 1h. As shown in Fig. 1, the cylinder body 1a includes a large diameter cylinder 1h disposed at the top, and a small diameter cylinder 1g connected to the lower end of the large diameter cylinder 1h, on which a lower piston 11d slides and which has an inner diameter smaller than that of the large diameter cylinder 1h.

[0014] In addition, a pressure relief portion 1b, the inner surface of which expands radially outward, is provided in the large-diameter cylinder 1h, lower than the central height position. The pressure relief portion 1b is formed in a plurality of locations in the circumferential direction, and when the pressing member 8 is pressed down and the ejection of the content liquid is completed as shown in the right half of Figs. 1 and 2, it plays a role of releasing the liquid pressure in the cylinder 1 into the container body C via the pressure relief portion 1b and the outside air introduction hole 1d. The pressure relief portion 1b is provided to improve the liquid cut-off in the nozzle when the ejection of the content liquid is completed. In addition, by providing the pressure relief portion 1b, the air in the cylinder 1 can be collected into the container body C during priming, and priming can be performed appropriately. In this embodiment, the outside air introduction hole 1d is provided in the large-diameter cylinder 1h, and is provided to take in outside air into the container body C. That is, when the inside of the container body C becomes in a negative pressure state, outside air is taken in through the outside air introduction hole 1d.

[0015] In this specification, claims, and drawings, the up-down direction means the upper and lower directions in the state in which the normal inverted dispenser 100 is attached to the container body C and in the normal position as shown in FIG. 1. The definition of the upper and lower directions does not change even when the normal inverted dispenser 100 is in the inverted position. That is, even in the inverted position of the normal inverted dispenser 100, the side where the head part 30 is located is the upper side, and the side where the bottom part of the container body C is located is the lower side. In addition, the radially outward direction means the direction away from the central axis O along a straight line passing through the central axis O of the normal inverted dispenser 100 in FIG. 1 and perpendicular to the central axis O, and the radially inward direction means the direction toward the central axis O along the straight line. In addition, when the normal inverted dispenser 100 is in the normal position, the upstream side means the side closer to the suction port A1 in the flow path of the content liquid from the suction port A1 to the discharge port 12a in FIG. 1, and the downstream side means the side closer to the discharge port 12a. In addition, when the normal inverted dispenser 100 is inverted, the upstream side refers to the side of the flow path of the content liquid from the outside air inlet 1d (which serves as the intake port for the content liquid in the inverted position) in Figure 1 to the discharge hole 12a that is closer to the outside air inlet 1d, and the downstream side refers to the side closer to the discharge hole 12a.

[0016] 1 and 2 show, on the left side, a state in which the pressing member 8 is not pressed, and, on the right side, a state in which the pressing member 8 is pressed and the pump is operating.

[0017] The accompanying drawings of the present disclosure are drawn to equal scale in the vertical and horizontal directions, and the aspect ratio of the forward inverted dispenser 100 in the drawings represents the aspect ratio of the forward inverted dispenser 100 of one embodiment of the present disclosure. However, the configuration, shape, dimensional ratio, etc. of the forward inverted dispenser 100 in the accompanying drawings are merely one embodiment of the present disclosure. The present invention should be interpreted based on the wording of the claims, and is not limited to the configuration, shape, dimensional ratio, etc. shown in the drawings.

[0018] In this embodiment, the container body C is formed by extrusion blow molding of a synthetic resin material, but other molding methods such as biaxial stretch blow molding may also be used. Also, the container body C may be a glass container.

[0019] Reference numeral 3 denotes an attachment member having a cylindrical peripheral wall 3a and a top wall 4 for fixing the flange 2 between the top wall 4 and the mouth C2, an inner peripheral wall 5 standing from the top surface of the top wall 4, and an outer peripheral wall 5a provided integrally on the radially outer side of the inner peripheral wall 5. A valve fixing cylinder 5b and a valve support cylinder 5c are further integrally connected from the upper end of the inner peripheral wall 5 toward the radially inner side. A fitting cylinder 2a standing from the flange 2 is fitted and fixed in the space between the inner peripheral wall 5 and the valve fixing cylinder 5b. The attachment member 3 has a threaded portion 3S on the inner side of the peripheral wall 3a, and is detachably attached to the mouth C2 of the container body C. Note that instead of the threaded portion 3S, an engagement protrusion protruding radially inward from the peripheral wall 3a may be provided so as to be attached to the container body C by plugging.

[0020] The head portion 30 of the inverted forward dispenser 100 according to this embodiment includes a pressing member 8 and a nozzle tip 12, and the liquid content stored in the cylinder 1 is pumped to the head portion 30 by pressing the pressing member 8 down.

[0021] The pressing member 8 includes an outer peripheral wall 8d, an inner peripheral wall 8e provided radially inside the outer peripheral wall 8d and adapted to fit the outer surface of the stem 9, and a nozzle accommodating portion 8c accommodating the nozzle tip 12. The pressing member 8 defines a space C1 therein, and the content liquid is pressure-fed to the nozzle tip 12 through the space C1.

[0022] Reference numeral 9 denotes a stem that is displaced downward together with the plunger body 11 by the downward pressure of the pressing member 8. The stem 9 moves up and down in response to repeated downward and return movements of the pressing member 8, and the sub-cylinder 7 integrally provided at the lower part of the stem 9 moves inside the large-diameter cylinder 1h. In addition, an outlet A2 is formed at the upper end of the plunger body 11. As described later, the pressure in the compression space PS of the cylinder 1 increases due to the downward movement of the stem 9 and the subsequent plunger body 11 caused by the downward movement of the pressing member 8, and this pressure increase causes the plunger body 11 to move further downward relative to the stem 9. This opens an outlet valve 15 consisting of the abutting part 9b of the stem 9 and the inclined part 11b of the plunger body 11, and the content liquid that has been pressure-fed upward from the compression space PS of the cylinder 1 through the gap between the upper piston 14 and the plunger body 11 is discharged to the outside via the outlet A2 and the discharge hole 12a.

[0023] In this embodiment, the sub-cylinder 7 is molded integrally with the lower part of the stem 9, but the present invention is not limited to this. The stem 9 and the sub-cylinder 7 may be molded separately and then assembled together.

[0024] The stem 9 is a cylindrical member that is movable up and down and forms the above-mentioned discharge valve 15 between the stem 9 and the plunger body 11. An abutment portion 9b is provided on the inner peripheral surface of the lower end of the stem 9, and the abutment portion 9b abuts against an inclined portion 11b formed on the outer peripheral surface of the plunger body 11 to form a discharge valve 15 that restricts the discharge of the content liquid. The discharge valve 15 allows communication between the inside of the cylinder 1 and the nozzle by the downward relative displacement of the plunger body 11 with respect to the stem 9.

[0025] Engagement ribs 9d are formed on the inner peripheral surface of the stem 9 above the discharge valve 15, and are arranged at intervals in the circumferential direction and protrude radially inward. The engagement ribs 9d engage with engagement protrusions 11a protruding radially outward from the upper outer peripheral surface of the plunger body 11, and regulate excessive downward relative displacement of the plunger body 11 with respect to the stem 9.

[0026] The upper end of the stem 9 is fixed to the pressing member 8 with its outer circumferential surface fitting into the inner circumferential surface of the inner circumferential wall 8 e of the pressing member 8 .

[0027] A sub-cylinder 7 that can move up and down inside the large-diameter cylinder 1h is integrally formed with the stem 9 at the bottom of the stem 9. As shown in Figs. 1 and 2, the sub-cylinder 7 includes a cylindrical portion 7a, an upper wall 7c that closes the upper end of the cylindrical portion 7a and is connected to the lower portion of the stem 9, and an annular pressing portion 7c1 that protrudes upward from the upper wall 7c and sandwiches an outside air introduction valve 13 (described later) between the valve fixing cylinder 5b and the valve support cylinder 5c. In addition, a contact portion 9b that constitutes a discharge valve 15 is provided in an area where the lower end of the stem 9 and the upper wall 7c are connected. As shown in Fig. 2, vertical ribs 7a1 extending in the vertical direction are intermittently provided on the outer peripheral surface of the cylindrical portion 7a. In addition, in this embodiment, a small gap is provided between the outer surface of the vertical rib 7a1 and the inner surface of the large-diameter cylinder 1h. This configuration reduces the area of ​​the surface of the cylindrical portion 7a facing the large diameter cylinder 1h and also provides a radial gap between the large diameter cylinder 1h, thereby reducing the sliding resistance between the sub-cylinder 7 and the cylinder 1 when the pressing member 8 is pressed down to displace the stem 9 downward. Note that the configuration may be such that the outer surface of the vertical rib 7a1 slides against the inner surface of the large diameter cylinder 1h.

[0028] 1 and 2, the plunger body 11 is a member extending in the vertical direction within the cylinder 1, and includes a rod-shaped portion 11j provided at the top, a main body portion 11e connected to the lower end of the rod-shaped portion 11j, a cylindrical fitting cylinder 11e1 extending downward from the main body portion 11e, a cylindrical portion 11c fitted and fixed to the inner surface of the fitting cylinder 11e1, and an upper piston 14 provided separately from the main body portion 11e, sliding on the inner surface of the sub-cylinder 7 and movable up and down relative to the main body portion 11e. In addition, a lower piston 11d is formed on the side surface of the lower portion of the cylindrical portion 11c, protruding radially outward and sliding on the inner surface of the small-diameter cylinder 1g.

[0029] An engaging protrusion 11a is provided on the side surface of the rod-shaped portion 11j of the plunger body 11, which engages with the engaging rib 9d of the stem 9 to form a pair of engaging portions 17. In addition, an inclined portion 11b is provided below the engaging protrusion 11a, which is inclined radially outwardly downward to form a valve seat of the discharge valve 15.

[0030] In addition, the main body 11e is provided with communication holes 11f at intervals in the circumferential direction to allow communication between the inside and the outside. The plunger body 11 is biased upward by a spring SP with respect to the cylinder 1 and is provided so as to be movable up and down.

[0031] In this embodiment, the engaging portion 17 is configured to have the engaging rib 9d and the engaging protrusion 11a on both the stem 9 and the plunger body 11, but is not limited to this. As long as it is possible to restrict the downward relative displacement of the plunger body 11 with respect to the stem 9, the protrusion may be provided on only one of the stem 9 and the plunger body 11.

[0032] The cylindrical portion 11c is attached to the main body portion 11e by fitting its upper end portion to the inner surface of the fitting cylinder 11e1, and constitutes the plunger body 11. The cylindrical portion 11c is a cylindrical member extending in the vertical direction in Figs. 1 and 2, and has an upper valve seat 11c1 on which the upright suction valve 10a, which is a ball valve, is seated at the upper end, and a lower valve seat 11c2 on which the inverted closing valve 63, which is a ball valve, is seated at the lower end in the inverted position. The cylindrical portion 11c guides the liquid in the storage space S, which is sucked in from the suction port A1, upward through the inside in the upright position. Then, the liquid in the storage space S is guided through the communication hole 11f via the upright suction valve 10a, which is opened by the negative pressure in the compression space PS, to the compression space PS. In addition, the inverted closing valve 63 is closed, thereby suppressing the air in the container body C from flowing into the compression space PS via the pipe P in the inverted position.

[0033] 1, a pipe P is fitted and fixed inside the fitting tube portion 1f at the lower end of the cylinder 1 for supplying the liquid content in the storage space S of the container body C to the suction port A1. Also, a valve body support portion 1m that supports the inverted shutoff valve 63 in the upright position is provided upright on the bottom 1k of the cylinder 1. The valve body support portions 1m are provided intermittently in the circumferential direction, and the liquid content taken in from the suction port A1 in the upright position passes through the valve body support portion 1m and is guided upward regardless of the position of the inverted shutoff valve 63.

[0034] The space inside the stem 9 functions as a liquid flow path L through which the liquid content passes to be pumped. The liquid flow path L is a flow path that passes from the compression space PS at the bottom of the large diameter cylinder 1h through the space between the upper piston 14 and the main body 11e, via the discharge port A2, and then through the inside of the stem 9 to the space C1 of the pressing member 8. As will be described later, the content in the compression space PS of the compressed cylinder 1 is pumped upward and sent to the discharge hole 12a through this liquid flow path L.

[0035] The plunger body 11 includes an upper piston 14 that is provided separately from the main body 11e and is movable up and down relative to the main body 11e. The upper piston 14 includes an upper sliding portion 14a and a lower sliding portion 14b that slide on the inner surface of the cylinder 1 as shown in Fig. 1 and Fig. 2. The lower sliding portion 14b includes an easily deformable portion 14b1 at a circumferential position corresponding to the outside air introduction hole 1d, the easily deformable portion 14b1 being formed thinner than the other lower sliding portions 14b and configured to be easily deformed radially inward.

[0036] In this embodiment, the outside air introduction hole 1d and the corresponding easily deformable portion 14b1 are provided at one location in the circumferential direction, but the outside air introduction hole 1d and the easily deformable portion 14b1 may be provided at multiple locations in the circumferential direction.

[0037] The lower sliding portion 14b of the upper piston 14 is provided around the entire circumference, and is a thin-film-like portion that is slightly inclined radially outward toward the bottom as shown in Fig. 2. The lower end of the lower sliding portion 14b abuts against the inner surface of the large-diameter cylinder 1h, thereby preventing the liquid in the compression space PS from leaking into the container body C through the outside air introduction hole 1d when the normal inverted discharger 100 is in a sideways position, for example. In this embodiment, at a circumferential position of the lower sliding portion 14b corresponding to the outside air introduction hole 1d, as shown in Figs. 2 and 3, the lower sliding portion 14b is cut out from the inside to form an easily deformable portion 14b1, and the radial thickness of the easily deformable portion 14b1 is configured to be thinner than other portions of the lower sliding portion 14b.

[0038] By providing the easily deformable portion 14b1 at the circumferential position corresponding to the outside air introduction hole 1d in this way, when the head portion 30 rises after the liquid content is ejected and the pressure in the compression space PS becomes negative in the inverted posture of the normal inverted dispenser 100, the easily deformable portion 14b1 in the lower sliding portion 14b elastically deforms radially inward. Due to the deformation of the easily deformable portion 14b1, the liquid content that was filled outside the outside air introduction hole 1d in the inverted posture passes through the outside air introduction hole 1d and the easily deformable portion 14b1 and flows into the compression space PS in the large diameter cylinder 1h.

[0039] In this manner, in this embodiment, even if a forward inverted adapter is not provided as in the prior art, the liquid content can be guided into the compression space PS of the cylinder 1 in the inverted position through the outside air introduction hole 1d that is also provided in the conventional forward inverted discharger. Therefore, the number of parts and assembly steps of the forward inverted discharger can be reduced, and the height dimension can be suppressed.

[0040] In this embodiment, the upper piston 14 is configured to block the outside air introduction hole 1d, so that if the upright inverted dispenser 100 is, for example, laid on its side and both the upright suction valve 10a and the inverted closing valve 63 are opened, the contents can be prevented from leaking out of the outside air introduction hole 1d of the cylinder 1.

[0041] On the other hand, the upper sliding part 14a of the upper piston 14 is provided around the entire circumference and has a substantially uniform thickness around the circumference. The upper sliding part 14a slides closely against the cylinder 1 when discharging the content liquid to the outside, and plays a role in maintaining the pressure in the compression space PS at an elevated state.

[0042] In this embodiment, the upper piston 14 is provided separately from the other members constituting the plunger body 11, and can move vertically relative to the main body 11e of the plunger body 11. With this configuration, when the plunger body 11 descends, the upper piston 14 starts moving downward after the lower end of the cylindrical portion 7a of the sub-cylinder 7 abuts against the upper piston 14 arranged with a gap therebelow, so that the upper piston 14 descends later than the main body 11e of the plunger body 11, which descends roughly in synchronization with the sub-cylinder 7. Also, when the plunger body 11 ascends, the upper piston 14 starts moving upward after the upper end of the support projection 11e2 of the plunger body 11 abuts against the upper piston 14 arranged with a gap therebelow, so that the upper piston 14 ascends later than the main body 11e of the plunger body 11. With this configuration, the pressing resistance immediately after the start of pressing the head portion 30 can be reduced, so that the operational feel of the pressing operation can be improved.

[0043] Reference numeral 13 denotes an outside air introduction valve that functions as a check valve for preventing leakage of the content liquid through the outside air introduction hole 1d from inside the container body C. The outside air introduction valve 13 abuts against the outer circumferential surface of the stem 9, and can be opened by elastically deforming downward from a state in which the inside end of the outside air introduction valve 13 abuts against the lower ends of the valve fixing cylinder 5b and the valve support cylinder 5c shown in FIG.

[0044] As shown in FIG. 2, the outside air introduction valve 13 is fixed to the cylinder 1 by having its radially outer end sandwiched between the valve fixing cylinder 5b and the large diameter cylinder 1h of the cylinder 1.

[0045] On the other hand, the radially inner end of the outside air introduction valve 13 is abutted against the stem 9 but can be displaced downward from the initial state in which it abuts against the lower end of the valve support cylinder 5c. With this configuration, when negative pressure is generated inside the container body C, the area below the outside air introduction valve 13 also becomes negative pressure through the space between the outside air introduction hole 1d and the vertical rib 7a1, and the radially inner end of the outside air introduction valve 13 displaces downward to create a gap between it and the stem 9, so that outside air is introduced into the inside of the container body C from the outside through the outside air introduction hole 1d.

[0046] On the other hand, for example, as in the prior art (JP Patent Publication No. 2022-27265), when a normal inverted adapter or the like is used to discharge the liquid content with the container body C in an inverted position, the liquid content in the container body C may leak to the outside through the outside air introduction hole 1d. However, in this embodiment, as described above, the outside air introduction valve 13 that seals the inside of the container body C from the outside is fixed to the cylinder 1 by the valve fixing tube 5b. With this configuration, when the pressing member 8 is pressed to discharge the liquid content with the container body C in an inverted position, the outside air introduction valve 13 abuts against the outer surface of the stem 9 to seal the inside of the container body C from the outside and abuts against the lower end of the valve support tube 5c. By operating the outside air introduction valve 13 in this manner, the inside of the container body C is sealed from the outside, thereby suppressing the liquid content in the container body C from leaking to the outside through the outside air introduction hole 1d.

[0047] Reference numeral 10a denotes an upright intake valve that opens and closes an intake port A1 formed at the lower end of the cylinder 1 in response to the up and down movement of the stem 9. In this embodiment, the upright intake valve 10a is formed of a ball valve.

[0048] The plunger body 11 is biased upward relative to the cylinder 1 by a spring SP. The plunger body 11 is movable up and down relative to the cylinder 1. By pressing down the pressing member 8 of the head portion 30 attached above the stem 9, the stem 9 and the upper piston 14 move downward, and the main body portion 11e of the plunger body 11 moves downward due to a pressure increase in the compression space PS caused by the difference in inner diameter between the large diameter cylinder 1h and the small diameter cylinder 1g. When the plunger body 11 moves downward, the discharge valve 15 consisting of the abutment portion 9b of the stem 9 and the inclined portion 11b of the plunger body 11 is opened, and the content liquid pressure-fed from the compression space PS is discharged to the outside via the space between the upper piston 14 and the main body portion 11e, the discharge port A2, and the discharge hole 12a.

[0049] In this embodiment, the compression space PS of the cylinder 1 is a region surrounded by the large diameter cylinder 1h, the upper piston 14, the main body portion 11e, the cylindrical portion 11c, the lower piston 11d, and the small diameter cylinder 1g.

[0050] A nozzle tip 12 (nozzle) is fitted into the pressing member 8. A discharge hole 12a for ejecting the content liquid is formed in the nozzle tip 12. This discharge hole 12a is composed of a large diameter part and a small diameter part, and can increase the flow rate of the pressure-fed content liquid and eject it to the outside.

[0051] Each member constituting the forward inverted dispenser 100 can be made of, for example, synthetic resin or metal.

[0052] In the inverted forward discharger 100 having the configuration shown in FIG. 1, when a user uses the liquid content, the pressing member 8 of the head portion 30 is pressed downward from the state shown on the left side of FIG. 1. When the pressing member 8 is pressed down, the upper end of the stem 9 fitted inside the inner circumferential wall 8e of the pressing member 8 is pressed down, and the main body portion 11e of the plunger body 11 is also pressed down. Next, the upper piston 14 is also pressed down by the lower end of the cylindrical portion 7a of the sub-cylinder 7, and the pressure in the compression space PS of the cylinder 1 is increased. Then, with the increase in pressure in the compression space PS, the main body portion 11e of the plunger body 11 moves further downward relative to the stem 9, and the discharge valve 15 consisting of the abutment portion 9b and the inclined portion 11b is opened. As a result, the liquid content whose pressure has been increased in the compression space PS passes through the space between the upper piston 14 and the main body portion 11e, the liquid flow path L including the discharge valve 15, and is discharged from the discharge hole 12a. At this time, due to the positive pressure in the compression space PS, the upright suction valve 10a abuts against the upper valve seat 11c1 and the suction port A1 is closed, so that the liquid content in the container body C is not sucked into the cylinder 1 through the suction port A1.

[0053] When the user further presses the pressing member 8, the plunger body 11 continues to move downward relative to the stem 9 while the discharge valve 15 remains open. Eventually, the engagement protrusion 11a provided on the plunger body 11 comes into contact with and engages with the engagement rib 9d of the stem 9. This restricts further downward relative movement of the plunger body 11 relative to the stem 9. Therefore, even if a downward force acts on the plunger body 11 due to the pressing of the pressing member 8, the engagement protrusion 11a and the engagement rib 9d engage with each other, and the plunger body 11 does not move excessively downward. Therefore, even if the pressing member 8 is pressed down vigorously, the plunger body 11 reaches the pressure relief portion 1b earlier than when the pressing member 8 is pressed down at a normal speed, which is an inconvenience that the amount of ejection is greatly reduced.

[0054] When the pressing member 8 is pushed down to the lower limit of the movable range, the lower sliding part 14b of the upper piston 14 of the plunger body 11 reaches a position covering the pressure relief part 1b of the cylinder 1 (see the right side of FIG. 1). As a result, the liquid pressure inside the cylinder 1 is released via the pressure relief part 1b and the outside air introduction hole 1d. By releasing the liquid pressure inside the cylinder 1, the downward pushing force acting on the plunger body 11 is also released, and the plunger body 11 is displaced upward by the urging force of the spring SP, the abutment part 9b is seated on the inclined part 11b, and the discharge valve 15 is closed. As a result, the ejection of the content liquid from the discharge hole 12a of the nozzle tip 12 is stopped. In addition, since the liquid pressure inside the cylinder 1 is suddenly released, the ejection of the content liquid can be finished smoothly.

[0055] When the user finishes using the liquid and stops pressing the pressing member 8, the plunger body 11, which had been displaced downward in the cylinder 1, is urged upward by the restoring force of the spring SP and rises to the position shown on the left side of Fig. 1. In this embodiment, the main body 11e of the plunger body 11 and the upper piston 14 are separate bodies, so that after the main body 11e of the plunger body 11 starts to rise, the support protrusion 11e2 integrally provided with the main body 11e abuts against the upper piston 14 from below, causing the upper piston 14 to rise later than the main body 11e. As the upper piston 14 of the plunger body 11 rises, the volume of the compression space PS of the cylinder 1 increases and negative pressure is generated, and the upright suction valve 10a seated on the upper valve seat 11c1 rises and opens the valve.

[0056] When the inverted discharger 100 is used in the upright position, the inverted shutoff valve 63 is supported by the valve body support portion 1m and is open, so that the liquid content in the container body C is introduced from the pipe P through the suction port A1 and the communication hole 11f into the compression space PS of the cylinder 1.

[0057] When the normal inverted discharger 100 is used in the inverted position, the inverted blocking valve 63 is seated on the lower valve seat 11c2 of the cylindrical part 11c by its own weight, so that the liquid in the container body C is not sucked through the pipe P. On the other hand, the negative pressure in the compression space PS of the cylinder 1 causes the easily deformable part 14b1 of the lower sliding part 14b of the upper piston 14 to deform inward, and the outside air introduction hole 1d is opened. When the normal inverted discharger 100 is in the inverted position, the outside of the outside air introduction hole 1d is filled with the liquid in the container body C, so that the liquid in the container body C is introduced through the outside air introduction hole 1d into the compression space PS of the cylinder 1. In addition, in this embodiment, the inverted blocking valve 63 is closed in the inverted position, so that the introduction of the air in the container body C into the compression space PS through the pipe P can be effectively suppressed.

[0058] The liquid content introduced into the compression space PS of this cylinder 1 is pressurized within the compression space PS by the next pressing of the pressing member 8, and is discharged from the discharge hole 12a via the liquid flow path L, including the space between the upper piston 14 and the main body portion 11e and the discharge valve 15.

[0059] Furthermore, as the liquid content in the container body C is introduced into the cylinder 1, the pressure inside the container body C turns negative, but as described above, the area below the outside air introduction valve 13 also becomes negative through the outside air introduction hole 1d and the space between the vertical rib 7a1. This negative pressure causes the radially inner end of the outside air introduction valve 13 to move downward, creating a gap between it and the stem 9, so the valve opens and outside air is introduced into the container body C through the outside air introduction valve 13, the space between the vertical rib 7a1, and the outside air introduction hole 1d.

[0060] As described above, this embodiment is a forward inverted dispenser including the mounting member 3 attached to the mouth portion C2 of the container body C, the cylinder 1 hanging down from the mounting member 3, the plunger body 11 that is biased upward relative to the cylinder 1 and is arranged to be vertically movable and stands from inside the cylinder 1, the cylindrical stem 9 arranged to be vertically movable relative to the cylinder 1, the head portion 30 that is attached to the upper portion of the stem 9 in a depressible manner and has a nozzle (nozzle tip 12) that dispenses the content liquid, and the outside air introduction valve 13 that seals the gap between the cylinder 1 and the stem 9, and that allows the introduction of outside air into the container body C through the outside air introduction hole 1d and suppresses leakage of the content liquid from inside the container body C through the outside air introduction hole 1d. The side of the cylinder 1 is provided with an outside air introduction hole 1d, and the plunger body 11 has an upright suction valve 10a that controls the flow of the liquid in the up-down direction inside the cylindrical part 11c extending in the up-down direction, an upper piston 14 that slides on the inner surface of the cylinder 1 and can close the outside air introduction hole 1d from the inside when the head part 30 is in the raised position, and a lower piston 11d that slides on the inner surface of the cylinder 1 below the upper piston 14, and the upper piston 14 is provided with an easily deformable part 14b1 that deforms inward due to negative pressure in the cylinder 1 to open the outside air introduction hole 1d, and the lower end opening of the cylindrical part 11c of the plunger body 11 is configured to be closed by the inverted closing valve 63 in the inverted position of the normal inverted dispenser 100. By adopting such a configuration, the liquid in the liquid can be introduced into the compression space PS of the cylinder 1 in the inverted position through the outside air introduction hole 1d that was also provided in the conventional normal inverted dispenser, even without providing a normal inverted adapter. Therefore, the number of parts and assembly steps of the normal inverted discharger can be reduced, and the height dimension can be suppressed. Also, when the content liquid is introduced into the compression space PS of the cylinder 1 in the inverted position, air can be prevented from entering from the intake path of the content liquid in the upright position. When negative pressure is generated in the container body C, the area below the outside air introduction valve 13 also becomes negative pressure through the outside air introduction hole 1d, and the valve opens, so that outside air can be introduced into the container body C from the outside through the outside air introduction hole 1d. Also, the outside air introduction valve 13 functions as a check valve, so that the content liquid in the container body C can be prevented from leaking to the outside.

[0061] In this embodiment, the upper piston 14 has an upper sliding portion 14a and a lower sliding portion 14b that slide on the inner surface of the cylinder 1, and the easily deformable portion 14b1 is provided by thinning the circumferential position of the lower sliding portion 14b corresponding to the outside air introduction hole 1d. By adopting such a configuration, the content liquid can be sucked through the outside air introduction hole 1d in the inverted posture according to the pressure in the compression space PS without adding a new dedicated member.

[0062] In this embodiment, the upper piston 14 is configured to descend later than the main body 11e of the plunger body 11 when the plunger body 11 descends. By adopting such a configuration, the pressing resistance immediately after starting to press the head portion 30 can be reduced, thereby improving the operational feel of the pressing operation.

[0063] In this embodiment, the cylinder 1 includes a large-diameter cylinder 1h, a small-diameter cylinder 1g having an inner diameter smaller than that of the large-diameter cylinder 1h, and a sub-cylinder 7 that is provided under the stem 9 and can move up and down within the large-diameter cylinder 1h, and the upper sliding part 14a of the upper piston 14 slides on the inner surface of the sub-cylinder 7, the lower sliding part 14b of the upper piston 14 slides on the inner surface of the large-diameter cylinder 1h, and the lower piston 11d slides on the inner surface of the small-diameter cylinder 1g. By adopting such a configuration, it is possible to reduce the sliding resistance between the sub-cylinder 7 and the cylinder 1 when the pressing member 8 is pressed down to displace the stem 9 downward.

[0064] Although the present disclosure has been described based on the drawings and embodiments, it should be noted that those skilled in the art can easily make various modifications and corrections based on the present disclosure. Therefore, it should be noted that these modifications and corrections are included in the scope of the present invention. For example, the functions included in each component can be rearranged so as not to cause logical inconsistency, and multiple components can be combined into one or divided. It should be understood that these are also included in the scope of the present invention.

[0065] For example, in the embodiment described above, the normal inverted dispenser 100 is unitized in advance, but according to the present disclosure, it is also possible to assemble individual parts to the container body C without unitizing it.

[0066] In addition, in this embodiment, the upper piston 14 and the main body portion 11e of the plunger body 11 are configured to be formed separately, but the present invention is not limited to this embodiment, and the upper piston 14 and the main body portion 11e of the plunger body 11 may be configured to be integrally formed. Also, the cylindrical portion 11c may be formed as a separate member from the main body portion 11e and attached to the main body portion 11e, or the main body portion 11e and the cylindrical portion 11c may be formed integrally.

[0067] In the present embodiment, only the engaging ribs 9d constituting the engaging portion 17 are provided intermittently in the circumferential direction, but the present invention is not limited to this, and both the engaging protrusions 11a and the engaging ribs 9d may be provided intermittently in the circumferential direction. Also, only the engaging protrusions 11a may be provided intermittently in the circumferential direction. [Industrial Applicability]

[0068] The present disclosure can be employed as an inverted forward dispenser 100 for cosmetics such as lotions and hair styling products, medicines such as insect repellents, and beauty and health products, for example. [Explanation of symbols]

[0069] 1 cylinder 1a Cylinder body 1b Pressure relief section 1d Air intake hole 1f Fitting cylinder 1g Small diameter cylinder 1h Large diameter cylinder 1k bottom 1m Valve support part 2 Flanges 2a Fitting cylinder part 3 Mounting material 3a Peripheral wall 3S Threaded Part 4. Ceiling Wall 5 Inner wall 5a Outer wall 5a1 Engagement protrusion 5b Valve fixing cylinder 5c Valve support cylinder 7 Sub-cylinder 7a Cylindrical part 7a1 vertical rib 7c upper wall 7c1 Annular pressing part 8 Pressing member 8c Nozzle housing 8d outer wall 8e Inner wall 9. Stem 9b Contact part 9d Engagement rib 10a Upright intake valve 11 Plunger body 11a Engagement protrusion 11b Inclined part (valve seat) 11c Cylindrical part 11c1 Upper valve seat 11c2 Lower valve seat 11d Lower piston 11e Main body 11e1 Fitting tube 11e2 Support protrusion 11f communication hole 11j Rod-shaped part 12 Nozzle tip (nozzle) 12a Discharge hole 13. Fresh air intake valve 14 Upper piston 14a Upper sliding part 14b Lower sliding part 14b1 Easy-to-deform part 15 Exhaust valve 17 Engagement part 30 Head section 63 Inverted closure valve 100 Upright inverted dispenser A1 Intake port A2 outlet C Container body C1 space C2 Mouth L Liquid flow path O center axis P Pipe PK packing PS Compressed Space S Storage space SP Spring

Claims

1. An attachment member to be attached to the mouth of the container body; a cylinder depending downwardly from the mounting member; a plunger body that is biased upward relative to the cylinder and is movable up and down, and stands up from inside the cylinder; A cylindrical stem that is movable up and down relative to the cylinder; A head portion which is attached to an upper portion of the stem in a depressable manner and has a nozzle for discharging the content liquid; an outside air introduction valve that seals a gap between the cylinder and the stem, allowing outside air to be introduced into the container body through an outside air introduction hole provided on a side of the cylinder and suppressing leakage of the content liquid from the container body through the outside air introduction hole; A forward inverted dispenser comprising: The plunger body is an upright intake valve that controls the flow of the content liquid in the vertical direction inside the vertically extending cylindrical portion; an upper piston that slides on an inner surface of the cylinder and is capable of closing the outside air introduction hole from the inside when the head portion is in a raised position; a lower piston that slides on the inner surface of the cylinder below the upper piston; having The upper piston is provided with an easily deformable portion that deforms inward due to negative pressure in the cylinder to open the outside air introduction hole, A lower end opening of the cylindrical portion of the plunger body is closed by an inverted blocking valve when the inverted position of the inverted discharger.

2. 2. The inverted ejector according to claim 1, wherein the upper piston has an upper sliding portion and a lower sliding portion that slide on an inner surface of the cylinder, and the easily deformable portion is provided by thinning a circumferential position of the lower sliding portion corresponding to the outside air introduction hole.

3. 3. The inverted discharger according to claim 1, wherein the upper piston descends later than the main body of the plunger when the plunger descends.

4. The cylinder is A large diameter cylinder; a small diameter cylinder having an inner diameter smaller than that of the large diameter cylinder; a sub-cylinder provided at the lower part of the stem and movable in the vertical direction within the large-diameter cylinder; having the upper sliding portion of the upper piston slides on the inner surface of the sub-cylinder, The lower sliding portion of the upper piston slides on the inner surface of the large diameter cylinder, 3. The inverted forward discharger according to claim 2, wherein the lower piston slides on an inner surface of the small diameter cylinder.

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