Dispenser

Abstract

To provide a discharger capable of achieving a function capable of preventing dripping of a content liquid from a nozzle with a simple structure.SOLUTION: The discharger 100A has an internal space S2 that communicates with the inside of the vessel (50) that contains the content liquid, and when the operation part is operated, the content liquid in the internal space S2 is pressurized and the content liquid is discharged from the nozzle, wherein the nozzle has a base 6c 6c and an elastic 9c 9c that is overlapped with the base 9d, and the elastic 6c has a pair of widthwise end portions located on the widthwise outer sides of the nozzle and fixed to the base, and a widthwise central portion located on the widthwise inner side of the nozzle, the widthwise central portion being elastically deformable in a direction away from the base. 9e 6c.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a dispenser for discharging a liquid contained in a container. [Background technology]

[0002] 2. Description of the Related Art As a dispenser for discharging a liquid contained in a container, there is known one in which a head is pressed down to drive a pump, thereby discharging the liquid from a nozzle provided on the head.

[0003] One such dispenser, as shown in Patent Document 1, has a valve member biased by an elastic body disposed inside the nozzle, and normally closes the nozzle outlet by the valve member biased by the elastic body, while pushing down the head causes the valve member to retract, thereby opening the outlet and discharging the content liquid to the outside. With this dispenser, the nozzle outlet is closed by the valve member, so it is possible to prevent the content liquid remaining in the nozzle from dripping after a while after the content liquid has been discharged. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-47546 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the dispenser of Patent Document 1 has a complex structure, using not only the valve member and elastic body as described above, but also a link mechanism that retracts the valve member when the head is pressed down. Also, because there are many parts, there are limits to how much cost can be reduced.

[0006] In view of the above, an object of the present invention is to provide a dispenser that can realize the function of preventing the content liquid from dripping from the nozzle with a simple structure. [Means for solving the problem]

[0007] The present invention is a dispenser that has an internal space that communicates with the inside of a container that contains the liquid contents, and when an operating part is operated, the liquid contents in the internal space are pressurized and the liquid contents are dispensed from a nozzle, wherein the nozzle has a base wall and an elastic wall that is superimposed on the base wall, and a pair of widthwise end portions of the elastic wall located on the widthwise outer sides of the nozzle are fixed to the base wall, and a widthwise central portion located on the widthwise inner side of the nozzle is elastically deformable in a direction away from the base wall. [Effects of the Invention]

[0008] According to the dispenser of the present invention, when the liquid content in the internal space is pressurized, the widthwise center portion of the elastic wall elastically deforms in a direction away from the base wall, causing the liquid content to be dispensed from the gap between the widthwise center portion of the elastic wall and the base wall. Furthermore, when the liquid content is not pressurized, the widthwise center portion of the elastic wall returns to its original state, overlapping with the base wall, preventing the liquid content from remaining between the base wall and the elastic wall and preventing the liquid content from dripping. Thus, the dispenser of the present invention can achieve the function of preventing the liquid content from dripping with a simple structure consisting of a base wall and an elastic wall. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a cross-sectional side view of a first embodiment of a dispenser according to the present invention; [Figure 2A] FIG. 2 is a plan view of the dispenser shown in FIG. [Figure 2B] FIG. 2B is a cross-sectional view taken along line AA shown in FIG. 2A. [Figure 3] FIG. 10 is a cross-sectional side view of a dispenser according to a second embodiment of the present invention. [Figure 4] FIG. 10 is a cross-sectional side view of a dispenser according to a third embodiment of the present invention. [Figure 5A] FIG. 5 is a partial enlarged view of the elastic body shown in FIG. [Figure 5B] FIG. 5B is a bottom view of the elastic body shown in FIG. 5A. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, one embodiment of a dispenser according to the present invention will be described with reference to the drawings. In this specification and the like, the up-down direction refers to the direction along the illustrated axis O (the central axis of the cylindrical wall 6a, which will be described later), with the side on which the pipe 2 is located being the "bottom" and the side on which the elastic cover 9 is located being the "top." The radial direction is the direction perpendicular to the axis O in a plane perpendicular to the axis O, and the circumferential direction is the direction rotating around the axis O in this plane. The side from which the base wall 6c extends (the left side in FIG. 1) will be referred to as the "front" side, and the opposite side (the right side in FIG. 1) will be referred to as the "rear" side.

[0011] FIG. 1 is a diagram showing a dispenser 100A which is a first embodiment of the dispenser according to the present invention, and a container 50 to which the dispenser 100A is attached.

[0012] First, we will explain the container 50. The container 50 of this embodiment is a so-called double container (sometimes called a delaminated container or a delaminate container), and is composed of an inner layer body 51 and an outer layer body 52 provided on the outside of the inner layer body 51.

[0013] The inner layer body 51 is made of a thin synthetic resin and is deformable so as to reduce its volume, and has a storage space S1 inside it that can store the liquid content.

[0014] The outer layer body 52 has a cylindrical mouth portion 52a extending along the axis O. A male thread portion 52b is provided on the outer peripheral surface of the mouth portion 52a. A hollow body portion 52c extending radially outward and then downward is provided below the mouth portion 52a, and a bottom portion (not shown) closes the lower end of the body portion 52c, giving the outer layer body 52 a bottle-like shape. In this embodiment, the outer layer body 52 is made of synthetic resin. The outer layer body 52 has an outside air inlet that penetrates the body portion 52c or the bottom portion (or the mouth portion 52a). Air is taken in through this outside air inlet between the inner layer body 51 and the outer layer body 52, so that when the content liquid from the storage space S1 is discharged to the outside, only the inner layer body 51 can be reduced in volume while maintaining the shape of the outer layer body 52.

[0015] Next, the dispenser 100A will be described. The dispenser 100A of this embodiment is composed of a holder 1, a pipe 2, a lower holding body 3A, an attachment cap 4, a packing 5, an upper cylinder 6, an elastic body 7A, an upper support body 8A, and an elastic cover 9. Of the above components, the packing 5, the elastic body 7A, and the elastic cover 9 are made of soft elastic materials (e.g., relatively soft synthetic resins such as polyethylene (LDPE, HDPE, and foamed PE), rubber, and elastomers), while the other components are made of hard materials (e.g., hard synthetic resins such as polypropylene (PP), polybutylene terephthalate (PBT), polyacetal (POM), and polyketone (POK) resins).

[0016] The holder 1 includes a cylindrical holder outer peripheral wall 1a located radially inward of the opening 52a when the dispenser 100A is attached to the container 50. A flange 1b extending radially outward is provided at the upper end of the holder outer peripheral wall 1a. A partition wall 1c extending radially inward is provided at the lower end of the holder outer peripheral wall 1a, and an opening 1d penetrating the partition wall 1c is provided at the center of the partition wall 1c. The partition wall 1c separates the storage space S1 from an internal space S2 (described later), and the storage space S1 and the internal space S2 are connected by the opening 1d. A cylindrical holder inner peripheral wall 1e extending upward radially inward of the holder outer peripheral wall 1a is provided on the upper surface of the partition wall 1c. A cylindrical pipe retaining tube 1f extending downward is provided on the lower surface of the partition wall 1c.

[0017] The pipe 2 is hollow, and its upper end is inserted into and fitted into a pipe holding cylinder 1f.

[0018] The lower holder 3A includes a lower base 3a, which is formed by integrally connecting a circular plate-shaped portion with a circular through-hole in the center and a cylindrical portion rising upward from the outer edge of the annular plate-shaped portion. The lower base 3a is disposed above the partition wall 1c and radially inward of the holder inner peripheral wall 1e. Inside the through-hole in the lower base 3a, a plate-shaped valve element 3b is provided, covering the opening 1d and seating on the upper surface of the partition wall 1c. An elastic piece 3c is integrally connected to the valve element 3b at one end and to the lower base 3a at the other end. When the pressure in the internal space S2 becomes lower than the pressure in the storage space S1, the elastic piece 3c of the valve element 3b elastically deforms and moves away from the upper surface of the partition wall 1c, thereby opening the opening 1d. In other words, the lower holder 3A functions as a "check valve" as defined herein. The valve body 3b and the elastic piece 3c of this embodiment have the same shapes as the valve body 7f and the elastic piece 7g shown in FIG. 5B when viewed from the bottom.

[0019] The attachment cap 4 has a cap top wall 4a that extends horizontally and has a circular through-hole in the center, and a cylindrical cap peripheral wall 4b that extends downward from the outer edge of the cap top wall 4a. An internal thread 4c is provided on the inner peripheral surface of the cap peripheral wall 4b, and the dispenser 100A can be held in the container 50 by threading the internal thread 4c onto the external thread 52b of the container 50.

[0020] The packing 5 is in the shape of an annular plate, and is inserted into and fitted into the holder outer peripheral wall 1a. When the female threaded portion 4c of the attachment cap 4 is screwed onto the male threaded portion 52b of the container 50, the packing 5 is sandwiched between the inner layer 51 covering the upper end of the opening 52a and the cap top wall 4a. This prevents problems such as the content liquid contained in the storage space S1 overflowing to the outside when the container 50 is displaced into an inverted position, for example.

[0021] The upper cylinder 6 includes a cylindrical wall 6a. The space inside the cylindrical wall 6a is referred to as the internal space S2. As shown in FIGS. 1 and 2A , a support wall 6b extending radially outward and having an arc-shaped configuration in plan view is provided at the upper end of the cylindrical wall 6a from the rear to the front. A base wall 6c extending radially outward and having a rectangular shape in plan view is provided at the front. An outer peripheral wall 6d extending upward is provided at the outer edge of the support wall 6b. An upper support wall 6e extending radially inward is provided at the upper end of the outer peripheral wall 6d, with a gap between it and the support wall 6b. 2B, a base wall outer edge wall 6f is provided at the outer edge portion of the base wall 6c (the widthwise end portion of the base wall 6c), and a side wall 6g is provided at the upper end portion of the base wall outer edge wall 6f, extending radially inward and leaving a gap between the base wall 6c and the base wall 6c. In this embodiment, the base wall outer edge wall 6f and the side wall 6g are provided on both sides of the base wall 6c in the widthwise direction, and the upper cylinder 6 has a pair of base wall outer edge walls 6f and a pair of side walls 6g.

[0022] The above-mentioned cylindrical wall 6a is fitted and held by the holder outer peripheral wall 1a and the holder inner peripheral wall 1e by being inserted between the holder outer peripheral wall 1a and the holder inner peripheral wall 1e of the holder 1. That is, in this embodiment, the cylindrical wall 6a is indirectly held by the mouth 52a of the container 50 via the holder 1.

[0023] The elastic body 7A includes a first base portion 7a having an annular shape centered on the axis O, a second base portion 7b having an annular shape centered on the axis O and spaced apart in the vertical direction from the first base portion 7a, and a plurality of inner annular portions 7c (three in this embodiment) having an annular shape centered on the axis O and spaced apart in the vertical direction from the first base portion 7a. The first base portion 7a, the second base portion 7b, and the plurality of inner annular portions 7c are spaced apart equally in the vertical direction. In this embodiment, the first base portion 7a is thinner in the vertical direction than the second base portion 7b, and is inserted into and held by the lower base portion 3a as shown in FIG. 1.

[0024] The elastic body 7A also includes an elastic portion 7d that is provided between the first base portion 7a, the second base portion 7b, and the multiple inner annular portions 7c and integrally connects them. In this embodiment, the elastic portion 7d extends in an arc shape so as to fit within the width of the first base portion 7a, etc. in a plan view, and extends so as to be curved and generally oblique to the axis O in a side view. The elastic portion 7d elastically deforms when a force is applied so that the first base portion 7a and the second base portion 7b move relatively closer to each other, and when this force is removed, the elastic portion 7d exerts an elastic force so that the first base portion 7a and the second base portion 7b move relatively farther apart.

[0025] In this embodiment, the upper support 8A includes an upper base 8a having an arcuate cross-sectional shape, forming an overall dome shape, as shown in the figure. An upper peripheral wall 8b extending downward is provided on the underside of the upper base 8a, and a horizontally extending step 8c is provided on the radially inner side of the upper peripheral wall 8b. The second base 7b is inserted inside the upper peripheral wall 8b and is supported by the upper support 8A in a state of contact with the step 8c.

[0026] The elastic cover 9 is elastically deformable and includes a dome-shaped cover wall 9a that covers the upper support 8A. The cover wall 9a is operated to eject the liquid contents, as described below, and corresponds to the "operation unit" in this specification. The outer edge of the cover wall 9a is provided with a cover holder 9b extending from the rear to the front, as shown in FIGS. 1 and 2A . The cover holder 9b is held by a gap that is U-shaped in cross section and is defined by the support wall 6b, the support wall outer edge wall 6d, and the support wall upper side wall 6e. In this way, the outer edge of the cover wall 9a is held by the cover holder 9b, thereby closing off the upper portion of the internal space S2 and sealing the internal space S2 from the outside.

[0027] An elastic wall 9c is provided at the front of the outer edge of the cover wall 9a, extending downward and then radially outward to overlap the base wall 6c. As shown in FIG. 2B , the widthwise outer end 9d of the elastic wall 9c is held by a gap defined by the base wall 6c, the base wall outer edge wall 6f, and the side wall 6g, forming a U-shaped cross-sectional view. The widthwise inner central portion 9e of the elastic wall 9c is elastically deformable away from the base wall 6c and is normally in contact with the upper surface of the base wall 6c. When the liquid contained in the internal space S2 is pressurized, as described below, the elastically deforms, forming a gap between the base wall 6c and the widthwise central portion 9e that allows the liquid to be discharged to the outside. In this embodiment, the base wall 6c and the elastic wall 9c constitute the "nozzle" described herein.

[0028] In this embodiment, the upper cylinder 6 and the elastic cover 9 are formed by integrating the material forming the upper cylinder 6 and the material forming the elastic cover 9 in a mold using a technique such as insert molding. After molding, the base wall 6c and the widthwise central portion 9e of the elastic wall 9c are pseudo-adhered and can be separated when force is applied.

[0029] Next, the procedure for discharging the liquid content from the dispenser 100A will be described. First, the cover wall 9a is pressed downward against the dispenser 100A attached to the container 50. This causes the upper support 8A to move downward together with the cover wall 9a, pushing down the second base portion 7b, and elastically deforming the elastic portion 7d so that it is compressed. Furthermore, because the opening 1d connecting the storage space S1 and the internal space S2 is closed by the valve body 3b, the internal space S2, whose volume decreases when the cover wall 9a is pressed down, is pressurized. Therefore, the pressurized air in the internal space S2 (or the pressurized liquid if the internal space S2 already contains the liquid content) applies a force to the widthwise center portion 9e of the elastic wall 9c so as to move it away from the base wall 6c. This allows the base wall 6c and the widthwise center portion 9e to be separated even if they are pseudo-bonded.

[0030] When the pressing force on the cover wall 9a is released, the elastically deformed elastic portion 7d returns to its original state and moves the cover wall 9a upward together with the upper support 8A, increasing the volume of the internal space S2 and creating a reduced-pressure atmosphere in the internal space S2. At this time, the pressure in the storage space S1 becomes relatively higher than that in the internal space S2, so the valve body 3b, which had been closing the opening 1d, elastically deforms the elastic piece 3c and moves away from the upper surface of the partition wall 1c, opening the opening 1d, and the liquid contained in the storage space S1 passes through the pipe 2 and the opening 1d and is introduced into the internal space S2.

[0031] When the cover wall 9a is pressed again, the elastic portion 7d is elastically deformed so as to be compressed, and the liquid contents in the internal space S2 are pressurized. The pressurized liquid contents elastically deform the widthwise central portion 9e of the elastic wall 9c, causing the liquid contents to pass through the gap between the base wall 6c and the widthwise central portion 9e and be ejected to the outside world from the tip of the base wall 6c.

[0032] When the widthwise central portion 9e of the elastic wall 9c elastically deforms, an upward force also acts on the widthwise end portion 9d of the elastic wall 9c. However, in this embodiment, the widthwise end portion 9d is sandwiched between the widthwise end portion of the base wall 6c and the side wall 6g, thereby preventing the widthwise end portion 9d from peeling off from the base wall 6c.

[0033] Subsequently, when the liquid content has been discharged and the pressure on the cover wall 9a is released, the elastically deformed widthwise center portion 9e returns to its original shape and contacts the base wall 6c. This prevents the liquid content from remaining between the base wall 6c and the widthwise center portion 9e, preventing the liquid content from dripping after it has been discharged. Furthermore, when the pressure on the cover wall 9a is released, the elastically deformed elastic portion 7d returns to its original shape, allowing new liquid content to be introduced into the internal space S2. Therefore, by repeatedly releasing the pressure on the cover wall 9a, the liquid content contained in the storage space S1 can be discharged to the outside.

[0034] Next, a dispenser 100B, which is a second embodiment of the dispenser according to the present invention, will be described with reference to Figure 3. In the following description, the differences in function from the dispenser 100A described above will be mainly described, and parts that share the same function will be denoted by the same reference numerals in the drawings as those described above, and detailed description thereof will be omitted.

[0035] The dispenser 100B includes a lower holding body 3B, an elastic body 7B, and an upper support body 8B, instead of the lower holding body 3A, elastic body 7A, and upper support body 8A described above.

[0036] The lower holding body 3B has a lower base 3d that is different in shape from the lower base 3a described above. The lower base 3d is formed by integrally connecting a circular plate-shaped portion with a circular through-hole in the center and a cylindrical portion that rises upward from the radially inner side of the outer edge of the annular plate-shaped portion. The valve body 3b and elastic piece 3c of the lower holding body 3B have the same shapes as those of the lower holding body 3A described above.

[0037] The elastic body 7B is a coil spring made of a metal wire wound in a spiral shape. The lower end of the elastic body 7B is supported between the cylindrical portion of the lower base portion 3d and the holder inner peripheral wall 1e.

[0038] The upper support body 8B has the above-mentioned upper base portion 8a and upper peripheral wall 8b, but is shaped in such a way that the step portion 8c is omitted. The upper portion of the elastic body 7B is supported by the upper support body 8B with the upper peripheral wall 8b inserted inward and in contact with the underside of the upper base portion 8a.

[0039] In this dispenser 100B, when the cover wall 9a is pressed downward, the upper support 8B moves downward along with the cover wall 9a, elastically deforming to compress the elastic body 7B. Furthermore, as the cover wall 9a is pressed downward, the volume of the internal space S2 decreases, and pressure is applied to the internal space S2. This allows the base wall 6c and the widthwise central portion 9e to separate even when they are pseudo-bonded, as in dispenser 100A. When the pressure on the cover wall 9a is released, the elastically deformed elastic body 7B returns to its original state, moving the cover wall 9a upward together with the upper support 8B. This increases the volume of the internal space S2, creating a reduced-pressure atmosphere in the internal space S2. The valve element 3b, which had been closing the opening 1d, then elastically deforms the elastic piece 3c and moves away from the upper surface of the partition wall 1c, opening the opening 1d. The liquid contained in the storage space S1 then flows through the pipe 2 and the opening 1d into the internal space S2.

[0040] When the cover wall 9a is pressed again, the elastic body 7B is compressed and elastically deformed, pressurizing the liquid content in the internal space S2. The pressurized liquid content elastically deforms the widthwise central portion 9e of the elastic wall 9c, causing the liquid content to pass through the gap between the base wall 6c and the widthwise central portion 9e and be expelled from the tip of the base wall 6c to the outside. When the pressure on the cover wall 9a is released, the elastically deformed widthwise central portion 9e returns to its original state and contacts the base wall 6c. This prevents the liquid content from remaining between the base wall 6c and the widthwise central portion 9e, preventing the liquid content from dripping. When the pressure on the cover wall 9a is released, the elastically deformed elastic body 7B returns to its original state, allowing new liquid content to be introduced into the internal space S2. By repeatedly releasing the pressure on the cover wall 9a, the liquid content contained in the storage space S1 can be expelled to the outside.

[0041] Next, a third embodiment of a dispenser according to the present invention, that is, dispenser 100C, will be described with reference to Fig. 4. In the following description, differences in function from dispenser 100A described above will be mainly described, and parts that share the same function will be denoted by the same reference numerals in the drawings as those described above, and detailed description thereof will be omitted.

[0042] Discharger 100C is provided with an elastic body 7C instead of the above-mentioned elastic body 7A. Note that the lower holder 3A used in dispenser 100A is eliminated in dispenser 100C.

[0043] The elastic body 7C includes the second base portion 7b, inner annular portion 7c, and elastic portion 7d described above, as well as a first base portion 7e instead of the first base portion 7a. The first base portion 7e is annular about the axis O, with its outer edge fitted and held within the inner peripheral surface of the holder inner peripheral wall 1e. Its vertical thickness is greater than that of the first base portion 7a. Inside a through hole located in the center of the first base portion 7e, as shown in FIGS. 5A and 5B, a disk-shaped valve body 7f and an elastic piece 7g are provided. One end of the valve body 7f is integrally connected to the valve body 7f and the other end is integrally connected to the first base portion 7e. Note that the cross-hatching in FIG. 5B indicates the through hole located around the elastic piece 7g, and the area where the elastic piece 7g is located is the white area excluding the cross-hatching in FIG. 5B. The elastic piece 7g of this embodiment extends radially outward from the valve body 7f, then extends in an arc shape, and then extends toward the first base portion 7e. The elastic body 7C of this embodiment has a total of three elastic pieces 7g of this shape around the valve body 7f.

[0044] The valve element 7f and elastic piece 7g of the first base portion 7e, like the valve element 3b and elastic piece 3c of the lower holder 3A described above, elastically deform when the pressure in the internal space S2 becomes lower than the pressure in the accommodation space S1, causing the elastic piece 7g to move away from the upper surface of the partition wall 1c, thereby opening the opening 1d. In other words, the first base portion 7e functions as a "check valve" in this specification. By providing the elastic body 7C with the function of a check valve in this way, the lower holder 3A can be eliminated, reducing the number of parts and contributing to cost reduction.

[0045] In the dispenser 100C, similar to the dispenser 100A, when the cover wall 9a is pressed downward, the upper support 8A moves downward along with the cover wall 9a, elastically deforming to compress the elastic portion 7d. Furthermore, as the cover wall 9a is pressed downward, the volume of the internal space S2 decreases, and pressure is applied to the internal space S2. Therefore, even if the base wall 6c and the widthwise central portion 9e are pseudo-bonded, they can be separated from each other, just as in the dispenser 100A. When the pressure on the cover wall 9a is released, the elastically deformed elastic portion 7d returns to its original state, moving the cover wall 9a upward together with the upper support 8A. This increases the volume of the internal space S2, creating a reduced-pressure atmosphere in the internal space S2. The valve element 7f, which had been closing the opening 1d, then elastically deforms the elastic piece 7g and moves away from the upper surface of the partition wall 1c, opening the opening 1d. The liquid contained in the storage space S1 then flows through the pipe 2 and the opening 1d into the internal space S2.

[0046] When the cover wall 9a is pressed again, the elastic portion 7d is compressed and elastically deformed, pressurizing the liquid contents in the internal space S2. The pressurized liquid contents elastically deform the widthwise central portion 9e of the elastic wall 9c, causing the liquid contents to pass through the gap between the base wall 6c and the widthwise central portion 9e and be expelled from the tip of the base wall 6c to the outside. When the pressure on the cover wall 9a is released, the elastically deformed widthwise central portion 9e returns to its original state and contacts the base wall 6c. This prevents the liquid contents from remaining between the base wall 6c and the widthwise central portion 9e, preventing the liquid contents from dripping. When the pressure on the cover wall 9a is released, the elastically deformed elastic portion 7d returns to its original state, allowing new liquid contents to be introduced into the internal space S2. By repeatedly releasing the pressure on the cover wall 9a, the liquid contents contained in the storage space S1 can be expelled to the outside.

[0047] While one embodiment of the present invention has been described above with reference to the drawings, this embodiment may be modified as follows. For example, while the cylindrical wall 6a is indirectly held by the opening 52a of the container 50 via the holder 1, the holder 1 may be omitted and the cylindrical wall 6a may be directly held by the opening 52a. Furthermore, while the elastic bodies 7A and 7C have three inner annular portions 7c in the illustrated example, this number may be changed as appropriate, or the inner annular portion 7c may be omitted. Furthermore, the elastic pieces 3c and 7g are arc-shaped in this embodiment, as shown in FIG. 5B, and a total of three elastic pieces are provided. However, the shape and number of the elastic pieces 3c and 7g may be changed as appropriate. For example, the number of the elastic pieces 3c and 7g may be two or less, four or more.

[0048] Furthermore, the containers to which the dispensers 100A to 100C are attached are not limited to so-called double containers, but may be pouch containers. The orientation in which the dispensers 100A to 100C are used is not limited to the orientation shown in the drawings, and they may be used in an orientation in which the nozzle head 10 or the elastic cover 9B faces downward or to the side, for example.

[0049] (Addendum) This specification discloses the following technology in one aspect. Note that the reference numerals described below correspond to the reference numerals in the accompanying drawings, but are presented as examples and are not intended to limit the invention of this application.

[0050] (Technology 1) A dispenser (100A) having an internal space (S2) communicating with the inside of a container (50) that contains a liquid content, and in which, when an operating part is operated, the liquid content in the internal space (S2) is pressurized and the liquid content is dispensed from a nozzle, The nozzle has a base wall (6c) and an elastic wall (9c) superimposed on the base wall (6c), The elastic wall (9c) has a pair of widthwise end portions (9d) located on the widthwise outer sides of the nozzle fixed to the base wall (6c), and a widthwise central portion (9e) located on the widthwise inner side of the nozzle that is elastically deformable in a direction away from the base wall (6c).

[0051] This technology makes it possible to prevent the contents from dripping with a simple structure consisting of a base wall and an elastic wall.

[0052] (Technology 2) The dispenser (100A) according to technique 1, wherein the nozzle has a pair of side walls (6g) that sandwich the pair of widthwise ends (9d) between the base wall (6c) and the pair of side walls (6g).

[0053] With this technology, even when an upward force acts on the widthwise end portion due to elastic deformation of the widthwise central portion of the elastic wall, the widthwise end portion is sandwiched between the base wall and the side wall, preventing the widthwise end portion from peeling off from the base wall.

[0054] (Technology 3) The dispenser (100A) according to Technology 1, wherein the base wall (6c) and the elastic wall (9c) are pseudo-adhered in an initial state.

[0055] The nozzle may be constructed by combining a member having a base wall and a member having an elastic wall, but when this technology is used, the base wall and elastic wall can be constructed from a single member, thereby reducing the number of parts.

[0056] (Technology 4) The internal space (S2) is provided inside a cylindrical wall (6a) that is directly or indirectly held against a mouth portion (52a) of the container (50), The dispenser (100A) according to Technology 1, wherein the base wall (6c) is integrally connected to the cylindrical wall (6a).

[0057] This technology makes the structure relating to the internal space more suitable for mass production, making it easier to realize the present invention.

[0058] (Technology 5) an elastic body (7A) disposed inside the cylindrical wall (6a); the operating portion is an elastically deformable cover wall (9a) that covers the upper part of the cylindrical wall (6a), has an outer edge portion held by the cylindrical wall (6a), and when pressed, elastically deforms the elastic body (7A) and reduces the volume of the internal space (S2); The dispenser (100A) according to Technology 4, wherein the elastic wall (9c) and the cover wall (9a) are integrally connected.

[0059] This technology allows the elastic wall and the cover wall to be constructed from a single member, which simplifies the structure and reduces the number of parts, thereby advantageously reducing costs.

[0060] (Technology 6) a partition wall (1c) having an opening (1d) that connects the inside of the container (50) to the internal space (S2); The dispenser (100A) according to Technology 4 is provided with a check valve provided inside the cylindrical wall (6a), the check valve having a valve body (3b) that normally seats on the partition wall (1c) to close the opening (1d), but moves away from the partition wall (1c) to open the opening (1d) when the pressure in the internal space (S2) is reduced.

[0061] This technology makes the configuration relating to the check valve used to pressurize and depressurize the internal space more suitable for mass production, making it easier to realize the present invention.

[0062] (Technology 7) an elastic body (7C) disposed inside the cylindrical wall (6a) and elastically deforming when the operating portion is pressed; The elastic body (7C) has an annular base (7e) supported by the partition wall (1c), The dispenser (100C) according to technology 6, wherein the base (7e) has the valve body (7f) radially inside the base (7e) and an elastic piece (7g) connecting the base (7e) and the valve body (7f) to function as the check valve.

[0063] This technology allows the elastic body that restores the operating part after being pressed to function as a check valve, which simplifies the structure and reduces the number of parts, thereby advantageously reducing costs.

[0064] Although one embodiment of the present invention has been described above, the present invention is not limited to this specific embodiment, and unless otherwise limited in the above description, various modifications and variations are possible within the spirit and scope of the present invention as defined in the claims. For example, the configurations of the above-described embodiment may be added or deleted as appropriate, and the configurations of one embodiment may be incorporated into other embodiments. Furthermore, the effects of the above-described embodiment are merely examples of the effects that can be obtained from the present invention. In other words, the effects of the present invention are not limited to the above-described effects, and additional effects may be obtained in addition to the above-described effects. [Explanation of symbols]

[0065] 1: Holder 1a: holder outer wall 1b: flange 1c: Partition wall 1d:Aperture 1e: Inner wall of holder 1f: Pipe holding tube 2: Pipe 3A, 3B: Lower retainer (check valve) 3a: lower base 3b: Valve body 3c: Elastic piece 3d: lower base 4: Mounting cap 4a: Cap top wall 4b: Cap peripheral wall 4c: Female thread 5: Packing 6: Upper cylinder 6a: Cylindrical wall 6b: Support wall 6c: Base wall (nozzle) 6d: Support wall outer edge wall 6e: Support wall upper wall 6f: Base wall outer edge wall 6g: Side wall 7A, 7B, 7C: Elastic body 7a: First base 7b:Second base 7c: Inner annular part 7d: Elastic part 7e: First base (base, check valve) 7f: Valve body 7g: Elastic piece 8A, 8B: Upper support 8a: Upper base 8b: Upper peripheral wall 8c:Dan section 9: Elastic cover 9a: Cover wall (operation part) 9b: Cover holding part 9c: Elastic wall (nozzle) 9d: Width direction end 9e: Width center part 50: Container 51: Inner layer 52: Outer body 52a: Mouth 52b: Male thread 52c: Torso 100A, 100B, 100C: Dispenser O: Axis line S1: Containment Space S2: Internal space

Claims

1. A dispenser having an internal space communicating with the inside of a container that contains a liquid content, wherein when an operating part is operated, the liquid content in the internal space is pressurized and the liquid content is dispensed from a nozzle, The nozzle has a base wall and an elastic wall superimposed on the base wall, The elastic wall has a pair of widthwise end portions located on the widthwise outer sides of the nozzle fixed to the base wall, and a widthwise central portion located on the widthwise inner side of the nozzle that is elastically deformable in a direction away from the base wall.

2. The dispenser according to claim 1 , wherein the nozzle has a pair of side walls sandwiching the pair of widthwise ends between the side walls and the base wall.

3. The dispenser of claim 1 , wherein the base wall and the elastic wall are initially pseudo-adhered.

4. The internal space is provided inside a cylindrical wall that is directly or indirectly held against a mouth portion of the container, The dispenser of claim 1 , wherein the base wall is integrally connected to the tubular wall.

5. an elastic body disposed inside the cylindrical wall; the operating portion is a covering wall that is elastically deformable, covers the upper part of the cylindrical wall, has an outer edge portion held by the cylindrical wall, and when pressed, elastically deforms the elastic body and reduces the volume of the internal space; The dispenser according to claim 4, wherein the elastic wall and the cover wall are integrally connected.

6. a partition wall having an opening that allows the inside of the container to communicate with the internal space; 5. The dispenser according to claim 4, further comprising a check valve provided inside the cylindrical wall, the check valve having a valve body that normally seats on the partition wall to close the opening, but moves away from the partition wall to open the opening when the internal space is depressurized.

7. an elastic body that is disposed inside the cylindrical wall and elastically deforms when the operation unit is pressed; the elastic body has an annular base supported by the partition wall, The dispenser according to claim 6, wherein the base portion includes the valve body on the radially inner side of the base portion and an elastic piece connecting the base portion and the valve body, and functions as the check valve.

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