Dispenser and dispensing container

Abstract

To provide a dispenser and dispenser container that can dispense a consistent amount of material while reducing the number of parts. [Solution] The dispensing container 1A comprises a container body 3 and a dispenser 2A. The dispenser 2A comprises a tapered nozzle 21 and a mounting part 22. A portion of the peripheral wall 21a of the nozzle 21 is formed into a truncated pyramidal portion 23, and the four walls 232-235 are formed to be thinner than the rear wall 231, thereby allowing the rear wall 231 of the truncated pyramidal portion 23 to be pushed in, while the repulsive force when the truncated pyramidal portion 23 is inverted automatically returns the truncated pyramidal portion 23 to its position before being pushed in. Furthermore, when the rear wall 231 is pushed in, it comes into contact with a projection 24 formed on the inside of the peripheral wall 21a of the nozzle 21, thereby limiting the pushing in of the rear wall 231.

Description

TECHNICAL FIELD

[0001] The present invention relates to a spout and a spout container.

BACKGROUND ART

[0002] As a conventional spout container for dripping or dispensing a small amount of content such as eye drops, a drip container is known in which a squeeze-deformable spout cylinder is assembled and fixed to a so-called delamination container (see, for example, Patent Document 1). Further, there is also known a dispenser that is provided on a container body by including a flexible cylindrical portion, and is capable of discharging a predetermined amount of content (see, for example, Patent Document 2). Furthermore, as another conventional spout container, a fixed-quantity discharge tube container is known in which a deformable and restorable fixed-quantity member is connected to a tube container (see, for example, Patent Document 3).

PRIOR ART DOCUMENTS

PATENT DOCUMENTS

[0003]

PATENT DOCUMENT 1

PATENT DOCUMENT 2

PATENT DOCUMENT 3

SUMMARY OF THE INVENTION

PROBLEMS TO BE SOLVED BY THE INVENTION

[0004] However, the above-described drip container and the above-described dispenser each further include a check valve in addition to the spout cylinder or the cylindrical portion, for dripping or dispensing the content. Further, the above-described fixed-quantity discharge tube container further includes an operating member in addition to the metering member, in order to keep the deformation of the fixed-quantity member constant.

[0005] In response to this, the inventor of the present invention has come to recognize that in all of the above-mentioned prior arts, there is room to reduce the number of parts in the dispensing portion when dispensing a certain amount of contents.

[0006] The objective of the present invention is to provide a dispenser and a dispenser container that can dispense a fixed amount of material while reducing the number of parts. [Means for solving the problem]

[0007] (1) The dispenser according to the present invention comprises a flexible tapered nozzle and a mounting part that can be attached to the mouth of a container body, wherein a part of the peripheral wall of the nozzle is formed into a truncated square pyramidal portion that protrudes radially outward, formed by five walls, and four of the five walls are formed to be thinner than the remaining one wall, so that the remaining one wall can be pushed in so that the truncated square pyramidal portion is inverted radially inward, while the repulsive force when the truncated square pyramidal portion is inverted automatically returns the truncated square pyramidal portion to its position before being pushed in, and furthermore, when the remaining one wall is pushed in, the pushing of the remaining one wall is restricted by contact with a projection formed on the inside of the peripheral wall of the nozzle or with the peripheral wall of the nozzle.

[0008] (2) In the dispensing device described in (1) above, the remaining wall may be limited from being pushed in by contacting a projection formed on the inside of the peripheral wall of the nozzle when the remaining wall is pushed in.

[0009] (3) In the dispensing device described in (1) above, the remaining wall may be configured to limit the pushing in of the remaining wall by contacting the peripheral wall of the nozzle when the remaining wall is pushed in.

[0010] (4) In any of the above (1) to (3) in one dispenser, the truncated square pyramidal portion is preferably such that three of the five walls, including the remaining one wall, are aligned in the direction of extension of the nozzle, and the remaining one wall is located at the rear of the truncated square pyramidal portion.

[0011] (5) In the dispensing device described in (4) above, the peripheral wall of the nozzle between the wall positioned in front of the truncated square pyramidal portion and the tip of the nozzle may be formed to be flat.

[0012] (6) In the dispenser of (1) or (3) above, the portion of the peripheral wall of the nozzle that faces the truncated square pyramidal portion in the radial direction is a recessed portion that is recessed radially inward, and the remaining wall may be limited from being pushed in by contacting the recessed portion of the peripheral wall of the nozzle when the remaining wall is pushed in.

[0013] (7) The dispensing container according to the present invention comprises one of the dispensing devices described in (1) to (6) above, and a container body attached to the mouth of the dispensing device. [Effects of the Invention]

[0014] The present invention can provide a dispenser and a dispenser container that can dispense a fixed amount of material while reducing the number of parts. [Brief explanation of the drawing]

[0015] [Figure 1] This is an enlarged side view showing a dispensing container according to the first embodiment of the present invention, in which the dispensing device according to the first embodiment of the present invention is shown in an enlarged state attached to the mouth of the container body. [Figure 2] This is a plan view of the dispensing container shown in Figure 1, viewed from the front. [Figure 3] This is a cross-sectional view of XX in Figure 1. [Figure 4]FIG. 3 is a cross-sectional view taken along line X-X, showing a state in which a rear wall constituting a part of the quadrangular frustum portion of the spouter is pushed radially inward. [Figure 5] FIG. 3 is a cross-sectional view of the spouting container of FIG. 1, corresponding to the Y-Y cross section of FIG. 2, in which an overcap is attached to the spouting container. [Figure 6] In the spouting container according to the second embodiment of the present invention, FIG. 3 is a cross-sectional view corresponding to the X-X cross section of FIG. 1, showing a state in which a rear wall constituting a part of the quadrangular frustum portion of the spouter is pushed radially inward. [Description of Embodiments for Carrying Out the Invention]

[0016] Hereinafter, a spouter and a spouting container, which are exemplary embodiments of the present invention, will be described with reference to the drawings.

[0017] In FIG. 1, a main part of a spouting container 1A according to the first embodiment of the present invention is shown in an enlarged side view. The spouting container 1A includes a spouter 2A according to the first embodiment of the present invention, and a container body 3 to which the spouter 2A is attached at a mouth portion 31. In FIG. 1, reference numeral O denotes the central axis of the spouting container 1A. In the present embodiment, the spouter 2A and the container body 3 are arranged on the same axis. That is, in the present embodiment, the central axis of the spouter 2A and the central axis of the container body 3 are each identical to the central axis O of the spouting container 1A (hereinafter also simply referred to as "axis O").

[0018] Here, in the following description, the "axial direction" refers to the direction in which the axis O extends, and particularly in the present embodiment, the "axial direction" is also referred to as the "front-rear direction". Further, the "front side (front)" refers to one side in the axial direction, and the "rear side (rear)" refers to the other side in the axial direction. In particular, in the present embodiment, the "front side (front)" refers to the side where the spouter 2A is disposed (in the case of the spouter 2A, the side where a spout port A1 to be described later is disposed), and the "rear side (rear)" refers to the side where the container body 3 is disposed (in the case of the spouter 2A, the side where a mounting portion 22 to be described later is disposed).

[0019] Further, in the following description, the term "radial direction" refers to a direction orthogonal to the axial direction. In particular, with the axis as the reference (center), the side closer to the axis is referred to as "radially inner side", and the side farther from the axis is referred to as "radially outer side". Furthermore, the term "circumferential direction" refers to the circumferential direction around the axis.

[0020] The spout 2A includes a flexible tapered nozzle 21, and a mounting portion 22 that can be attached to the mouth portion 31 of the container body 3. In the spout 2A according to the present embodiment, the nozzle 21 and the mounting portion 22 are integrally molded. The spout 2A is, for example, an injection-molded article formed of a synthetic resin such as polyethylene (PE) or polypropylene (PP).

[0021] FIG. 2 shows the dispensing container 1A viewed from the front side. As shown in FIG. 2, in the present embodiment, the peripheral wall 21a of the nozzle 21 has a cylindrical shape, and a spout A1 is formed at the tip (front end) 2e of the nozzle 21 on the inner side surrounded by the peripheral wall 21a. Furthermore, the peripheral wall 21a of the nozzle 21 tapers so as to incline radially inward as it goes toward the front side. FIG. 3 shows the X-X cross-sectional view of FIG. 1. In the present embodiment, the internal passage R defined by the inner peripheral surface of the peripheral wall 21a of the nozzle 21, that is, the internal passage R formed inside the nozzle 21, communicates with the outside through the spout A1. As shown in FIG. 3, in the present embodiment, the internal passage R has an orifice shape that tapers toward the spout A1.

[0022] Further, as shown in FIG. 1, in the spout 2A, a part of the peripheral wall 21a of the nozzle 21 is formed as a quadrangular frustum-shaped portion 23 that protrudes radially outward and is defined by five walls (231 to 235).

[0023] In this embodiment, the truncated pyramidal portion 23 has three walls (231-233) arranged so as to be aligned in the direction of extension of the nozzle 21. Specifically, the truncated pyramidal portion 23 has a rear wall 231 located at the rear of the truncated pyramidal portion 23, a front wall 232 located at the front of the truncated pyramidal portion 23, and a top wall 233 located between the rear wall 231 and the front wall 232. As shown in Figure 1, the rear wall 231, the front wall 232, and the top wall 233 are arranged so as to be aligned in a line in the axial direction (front-to-back direction). In this embodiment, the rear wall 231 and the front wall 232 are each trapezoidal panels. In this embodiment, the surface of the rear wall 231 has a plurality of anti-slip protrusions 236. In this embodiment, the top wall 233 is a trapezoidal rectangular panel. In this embodiment, the portion of the rear wall 231 corresponding to the trapezoidal upper base and the portion of the front wall 232 corresponding to the trapezoidal upper base are arranged to face each other in the front-rear direction, with the top wall 233 in between. In addition, as shown in Figure 1, in this embodiment, the length of the rear wall 231 in the front-rear direction is set to be longer than the length of the front wall 232 in the front-rear direction.

[0024] Furthermore, the truncated pyramidal portion 23 has a side wall 234 positioned on one side in the circumferential direction of the truncated pyramidal portion 23, and a side wall 235 positioned on the other side in the circumferential direction of the truncated pyramidal portion 23. The side walls 234 and 235 are positioned on both sides in the circumferential direction of the truncated pyramidal portion 23, flanking the rear wall 231, the front wall 232, and the top wall 233, respectively. In this embodiment, the side walls 234 and 235 are each trapezoidal panels. In addition, in this embodiment, the portion of the trapezoidal shape of the side wall 234 corresponding to the top base of the trapezoidal shape of the side wall 235 is positioned facing each other in the circumferential direction, flanking the top wall 233. Moreover, as shown in Figure 1, in this embodiment, the portions of the trapezoidal shape of the side walls 234 and 235 corresponding to the top base of the trapezoidal shape are positioned towards the front side together with the top wall 233.

[0025] In this embodiment, the rear wall 231 can be reversed radially inward by folding it radially inward relative to the peripheral wall 21a, using the contour line (valley line) L1, which is connected to the peripheral wall 21a and corresponds to the lower base of the trapezoidal shape of the rear wall 231, as the starting point. Similarly, in this embodiment, the front wall 232 can be reversed radially inward by folding it radially inward relative to the peripheral wall 21a, using the contour line (valley line) L2, which is connected to the peripheral wall 21a (in this embodiment, the flat surface F2 described later), as the starting point, which is connected to the peripheral wall 21a and corresponds to the lower base of the trapezoidal shape of the front wall 232. Likewise, in this embodiment, the side wall 234 can be reversed radially inward by folding it radially relative to the peripheral wall 21a, using the contour line (valley line) L3, which is connected to the peripheral wall 21a and corresponds to the lower base of the trapezoidal shape of the side wall 234, as the starting point. In this embodiment, the side wall 235 can also be reversed radially inward by bending it radially relative to the peripheral wall 21a, using the contour line (valley line) L3, which is connected to the peripheral wall 21a and corresponds to the lower base of the trapezoidal shape of the side wall 235, as the starting point.

[0026] Furthermore, the rear wall 231 and the side wall 234 can be reversed radially inward by folding them radially inward, using the contour line (ridge) L4, which is connected to the rear wall 231 and the side wall 234 and corresponds to one leg of the trapezoidal shape of the rear wall 231 or the side wall 234, as the starting point. Similarly, the rear wall 231 and the side wall 235 can be reversed radially inward by folding them radially inward, using the contour line (ridge) L4, which is connected to the rear wall 231 and the side wall 235 and corresponds to the other leg of the trapezoidal shape of the rear wall 231 or the side wall 235, as the starting point. In addition, the front wall 232 and the side wall 234 can be reversed radially inward by folding them radially inward, using the contour line (ridge) L5, which is connected to the front wall 232 and the side wall 234 and corresponds to one leg of the trapezoidal shape of the front wall 232 or the side wall 234, as the starting point. Similarly, the front wall 232 and the side wall 235 can be reversed radially inward by bending them radially inward, using the contour line (ridge line) L5 ​​that runs between the front wall 232 and the side wall 235, which corresponds to the other leg of the trapezoidal shape of the front wall 232 or the side wall 235, as the starting point.

[0027] In addition, the top wall 233 and the rear wall 231 can be reversed radially inward by folding them radially inward, using the contour line (ridge) L6, which is connected to the top wall 233 and corresponds to the upper base of the trapezoidal shape of the rear wall 231, as the starting point. Similarly, the top wall 233 and the front wall 232 can be reversed radially inward by folding them radially inward, using the contour line (ridge) L6, which is connected to the top wall 233 and corresponds to the upper base of the trapezoidal shape of the front wall 232, as the starting point. Furthermore, the top wall 233 and the side wall 234 can be reversed radially inward by folding them radially inward, using the contour line (ridge) L7, which is connected to the top wall 233 and corresponds to the upper base of the trapezoidal shape of the side wall 234, as the starting point. Similarly, the top wall 233 and the side wall 235 can be reversed radially inward by bending them radially inward, using the contour line (ridge) L7, which is connected to the top wall 233 and corresponds to the upper base of the trapezoidal shape of the side wall 235, as the starting point.

[0028] The truncated pyramidal portion 23 is formed such that four of the five walls (231-235) are thinner than the remaining wall (231) of the five walls (231-235). This allows the remaining wall (231) to be pushed in so that the truncated pyramidal portion 23 is inverted radially inward, while the repulsive force when the truncated pyramidal portion 23 is inverted automatically returns it to its position before being pushed in.

[0029] In this embodiment, the truncated pyramidal portion 23 has four walls, the front wall 232, the top wall 233, the side walls 234 and 235, which are thinner than the remaining wall, the rear wall 231. As shown in Figure 3, in this embodiment, the thickness d1 of the rear wall 231 is set to be equal to the thickness d0 of the circumferential wall 21a. In contrast, the thicknesses of the four walls, the front wall 232, the top wall 233, the side walls 234 and 235, are configured to be the same thickness d2. As shown in Figure 3, in this embodiment, the thickness d2 is set to be thinner than the thickness d1. In addition, as shown in Figure 3, in this embodiment, the rear wall 231 protrudes radially outward more than the four walls, the front wall 232, the top wall 233, the side walls 234 and 235. As a result, in this embodiment, for example, by using the rear wall 231 as an operating button and pushing the rear wall 231 radially inward, the truncated pyramidal portion 23 can be pushed radially inward, as shown in Figure 4, so that the rear wall 231, along with the other four walls (232-235), inverts radially inward with respect to the contour line L1. On the other hand, in this embodiment, when the push of the rear wall 231 is released, the rear wall 231, along with the other four walls (232-235), is restored to its radially outward position before being pushed in, due to the repulsive force when the truncated pyramidal portion 23 is inverted (in this embodiment, mainly the restoring force of the rear wall 231). As a result, in this embodiment, when the push of the rear wall 231 is released, the truncated pyramidal portion 23 can be automatically returned to its position before being pushed in, due to the repulsive force when the truncated pyramidal portion 23 is inverted, mainly the repulsive force (restoring force) when the rear wall 231 is elastically deformed.

[0030] Furthermore, in the dispenser 2A, when the rear wall (the remaining wall) 231 is pushed in, it comes into contact with a projection 24 formed on the inside of the peripheral wall 21a of the nozzle 21, thereby limiting the amount of pressure that the rear wall 231 can be pushed in.

[0031] In this embodiment, a projection 24 is provided on the inner surface of the peripheral wall 21a of the nozzle, projecting radially inward. In this embodiment, the projection 24 is integrally molded with the peripheral wall 21a. When the rear wall 231 is pushed radially inward together with the other walls (232-235), the rear wall 231 contacts the projection 24, as shown in Figure 4, thereby preventing deformation relative to the peripheral wall 21a. As a result, when the rear wall 231 is pushed radially inward, the amount of deformation of the rear wall 231 relative to the peripheral wall 21a, i.e., the amount of deformation of the truncated square pyramidal portion 23, is always kept constant.

[0032] Figure 5 is a cross-sectional view of the dispensing container 1A, corresponding to the YY section in Figure 2. In this figure, the overcap C is attached to the dispensing container 1A.

[0033] In this embodiment, the container body 3 is a bottle container. In this embodiment, the container body 3 comprises a mouth portion 31, a neck portion 32 connected to the mouth portion 31, a shoulder portion 33 connected to the neck portion 32, a body portion 34 connected to the shoulder portion 33, and a bottom portion 35 that closes the lower end of the body portion 34. In this embodiment, the container body 3 is provided with a neck ring 36 between the mouth portion 31 and the neck portion 32. In addition, in this embodiment, a male thread 37 for attaching and detaching the overcap C is formed on the outer circumferential surface of the mouth portion 31.

[0034] The container body 3 has a storage space S inside that can accommodate contents. Examples of contents include pharmaceuticals such as eye drops, and daily necessities such as toothpaste and cosmetics; any fluid contents, such as liquid, paste, or gel, are acceptable. The storage space S is connected to the outside through an opening A2 formed in the mouth 31. In this embodiment, the storage space S is opened to the outside through the spout A1 from the internal passage R of the dispenser 2A. The container body 3 can be formed, for example, by extrusion blow molding using a resin such as polypropylene (PP) or polyethylene (PE). However, the container body 3 is not limited to extrusion blow molding (EBM); for example, it can be formed by biaxial stretch blow molding using a resin such as polyethylene terephthalate (PET). Furthermore, the container body 3 can be a so-called delaminated container, comprising an outer layer and an inner layer that can be peeled from the outer layer, or a squeeze container that can be deformed and restored.

[0035] In this embodiment, the mounting portion 22 of the dispenser 2A is fixed to the mouth portion 31 of the container body 3 by being fitted into the mouth portion 31. In this embodiment, the mounting portion 22 has an inward-facing flange 22a. The flange 22a is fitted to the rear side of the outward-facing flange 31a formed on the mouth portion 31. However, the mounting portion 22 is not limited to being fixed to the mouth portion 31 by fitting. The mounting portion 22 only needs to be configured to seal the opening A2 of the mouth portion 31.

[0036] Next, an example of how to use the dispensing container 1A shown in Figure 5 will be explained.

[0037] When using the dispensing container 1A, the user first removes the overcap C from the dispensing container 1A. Figure 1 shows the container with the overcap C removed. Next, in this example, the dispensing container 1A is inverted so that the spout A1 is on the bottom. Then, from the state shown in Figure 3, the user pushes the rear wall 231 of the truncated pyramidal portion 23, which constitutes part of the nozzle 21, radially inward, thereby inverting the entire truncated pyramidal portion 23 radially inward, as shown in Figure 4. By inverting the entire truncated pyramidal portion 23, the volume of the dispensing container 1A decreases, allowing the compressed contents inside the dispensing container 1A to be dispensed from the spout A1. At this time, the rear wall 231 is pushed in until the truncated pyramidal portion 23 (for example, the rear wall 231) comes into contact with the projection 24, as shown in Figure 4. As a result, the amount of deformation of the truncated pyramidal portion 23 is always constant, and the amount of contents dispensed from the spout A1 is always constant.

[0038] Furthermore, with the dispensing container 1A, after the contents have been dispensed, the user can release the pressure on the rear wall 231, and the entire truncated square pyramidal portion 23 will automatically return to its radially outward positive position (initial position shown in Figure 3) primarily due to the restoring force of the rear wall 231.

[0039] Thus, with the dispensing container 1A, and by extension the dispensing container 1A, a single dispenser 2A equipped with a nozzle 21 and a mounting part 22 can dispense a fixed amount. Therefore, with the dispensing container 1A, it is possible to dispense a fixed amount while reducing the number of parts compared to conventional methods.

[0040] Furthermore, the dispensing container 1A has a cylindrical shape with the nozzle 21 tapering toward the dispensing outlet A1, and a portion of the peripheral wall 21a of the nozzle 21 is made into a truncated square pyramidal portion 23 that protrudes radially outward, formed by five panel-shaped walls (231-235). In addition, as shown in Figure 3, the thickness d2 of the walls other than the rear wall 231 (232-235) is made thinner than the thickness d1 of the rear wall 231, so that the rear wall 231 can function as a push button with its periphery closed by thin walls (232-235). In this case, the rear wall 231 is connected to the peripheral wall 21a of the nozzle 21 via the thin walls (232-235), except for the portion connected to the peripheral wall 21a of the nozzle 21 (contour line L1), thereby reducing the influence of the four thin walls (232-235). This makes it easier to invert the entire truncated square pyramidal portion 23 radially inward when the rear wall 231 is pushed radially inward. With the dispensing container 1A, inverting the entire truncated square pyramidal portion 23 radially inward reduces the volume of the dispensing container 1A, and as a result, the contents compressed inside the dispensing container 1A can be dispensed from the spout A1. In addition, the dispensing container 1A can keep the amount of deformation of the truncated square pyramidal portion 23 constant by bringing the truncated square pyramidal portion 23 (in this embodiment, the rear wall 231) that has been inverted radially inward by being pushed into contact with the projection 24 formed on the inside of the peripheral wall 21a of the nozzle 21.

[0041] On the other hand, in the dispensing container 1A, the thickness d1 of the rear wall 231 is thicker than the thickness d2 of the other walls (232-235). Therefore, when the indentation of the rear wall 231 is released, the restoring force required to return the entire truncated square pyramidal portion 23 to its radially outward positive position (the initial position shown in Figure 3) can be increased. As a result, when the indentation of the rear wall 231 is released, the entire truncated square pyramidal portion 23 can be reliably returned to its radially outward positive position.

[0042] Therefore, with the dispensing device 2A, and by extension the dispensing container 1A, even when the truncated pyramidal portion 23 is deformed as an operating button, the amount of deformation is always constant, and the truncated pyramidal portion 23 can be reliably returned to its original shape.

[0043] Furthermore, in this embodiment, when the rear wall 231 is pushed in, as shown in Figure 4, the rear wall 231 comes into contact with a projection 24 formed on the inside of the peripheral wall 21a of the nozzle 21, thereby limiting the amount of pressure the rear wall 231 can be pushed in. In this case, when the rear wall 231 is pushed in, the contact between the rear wall 231 and the projection 24 limits the area (range) in which the rear wall 231 can move (oscillate) relative to the peripheral wall 21a connected to the rear wall 231. In this case, the wear of the rear wall 231 relative to the peripheral wall 21a when the rear wall 231 moves (oscillates) repeatedly is suppressed, thereby reducing the decrease in the restoring force of the rear wall 231.

[0044] Furthermore, in this embodiment, the projection 24 is a linear projection extending in the direction of extension of the nozzle 21. In this embodiment, the projection 24 is a linear projection (rib) that extends in the axial direction and protrudes radially inward.

[0045] Furthermore, in this embodiment, the three walls, the rear wall 231, the front wall 232, and the top wall 233, are arranged to be aligned in the axial direction (the direction in which the nozzle 21 extends), and the rear wall (the remaining wall) 231 is located at the rear side of the truncated pyramidal portion 23. In this case, the rear wall 231, which functions as an operating button, is located close to the user's hand, making it easier to handle the dispenser 2A and, consequently, the dispenser container 1A.

[0046] Furthermore, in this embodiment, the peripheral wall 21a of the nozzle 21 between the front wall 232 of the truncated pyramidal portion 23 and the tip 2e of the nozzle 21 is formed flat. As shown in Figures 1 and 2, in this embodiment, a flat surface F2 is formed between the contour line L2, which corresponds to the lower base of the front wall 232 and is connected to the peripheral wall 21a, and the tip 2e of the nozzle 21. In this case, the truncated pyramidal portion 23 can be easily inverted radially inward by pushing in the rear wall 231.

[0047] Furthermore, in the truncated square pyramidal portion 23, the rear wall 231 can be configured such that when the rear wall 231 is pushed in, it comes into contact with the peripheral wall 21a of the nozzle 21, thereby limiting the amount of pressure the rear wall 231 can apply. In this case, when the rear wall 231 is pushed in, the rear wall 231 comes into contact with the peripheral wall 21a opposite to it, thereby limiting the area (range) in which the rear wall 231 can move (oscillate) relative to the peripheral wall 21a connected to the rear wall 231. In this case, the wear of the rear wall 231 relative to the peripheral wall 21a when the rear wall 231 moves (oscillates) repeatedly is suppressed, thereby reducing the restoring force of the rear wall 231.

[0048] Figure 6 is a cross-sectional view corresponding to the XX section of Figure 1, showing the dispensing container 1B, which is a second embodiment of the present invention, with the truncated square pyramidal portion 23 of the dispenser 2B pushed radially inward. The dispenser 2B is a second embodiment of the dispenser of the present invention. However, for parts of the dispensing container 1B and dispenser 2B that are substantially the same as those of the dispensing container 1A and dispenser 2A, their description will be omitted, as they are described in the same section as the dispensing container 1A and dispenser 2A.

[0049] In the dispenser 2B, the portion of the peripheral wall 21a of the nozzle 21 that faces the truncated pyramidal portion 23 in the radial direction, with the axis O in between, is a recessed portion 21c that is recessed radially inward. In this embodiment, the recessed portion 21c is formed such that a part of the peripheral wall 21a of the nozzle 21 is constricted radially inward. When the rear wall 231 is pushed in, as shown in Figure 6, it comes into contact with the inner surface of the recessed portion 21c, thereby limiting the amount of push-in of the rear wall 231. In this case, by adjusting the depth D21c of the recessed portion 21c, the amount of deformation of the truncated pyramidal portion 23, i.e., the amount of contents dispensed, can be adjusted.

[0050] As described above, exemplary embodiments of the present invention have been described, but the present invention is not limited to these embodiments and can be modified in various ways without departing from the spirit of the invention. Furthermore, the configurations (items) used in each of the above embodiments can be added to or substituted for one another. [Explanation of Symbols]

[0051] 1A: Dispensing container (first embodiment), 1B: Dispensing container (second embodiment), 2A: Dispenser (first embodiment), 2A: Dispenser (first embodiment), 2B: Dispenser (second embodiment), 2e: Front end (tip) of nozzle, 21: Nozzle, 21a: Peripheral wall, 21c: Recessed portion, 22: Mounting portion, 22a: Inward-facing flange, 23: Truncate portion, 231: Rear wall, 232: Front wall, 234: Side wall, 235: Side wall, 236: Anti-slip protrusion, 24: Projection, 3: Container body, 31: Mouth portion, 31a: Outward-facing flange, 32: Neck portion, 33: Shoulder portion, 34: Body portion, 35: Bottom portion, 36: Neck ring, 37: Threaded portion, A1: Dispensing outlet, C: Overcap, d0: Thickness of the circumferential wall, d1: Thickness of the rear wall, d2: Thickness of the front, top, and side walls, D21c: Depth of the recessed portion, F2: Flat surface, L1: Contour line (valley line) between the circumferential and rear walls of the nozzle, L2: Contour line (valley line) between the circumferential and front walls of the nozzle, L3: Contour line (valley line) between the circumferential and side walls of the nozzle, L4: Contour line (ridge line) between the rear wall and side walls, L5: Contour line (ridge line) between the front wall and side walls, L6: Contour line (ridge line) between the rear or front wall and the top wall, L7: Contour line (ridge line) between the side wall and the top wall, O: Axis (central axis)

Claims

1. It is equipped with a flexible, tapered nozzle and a mounting part that can be attached to the mouth of the container body. A portion of the peripheral wall of the nozzle is formed into a truncated square pyramidal portion that protrudes radially outward, formed by five walls, and four of the five walls are formed to be thinner than the remaining wall, so that the remaining wall can be pushed in so that the truncated square pyramidal portion is inverted radially inward, while the repulsive force when the truncated square pyramidal portion is inverted automatically returns the truncated square pyramidal portion to its position before being pushed in. Furthermore, the dispensing device wherein the remaining wall is limited in its indentation when the remaining wall is pressed in by contacting a projection formed on the inner side of the peripheral wall of the nozzle or the peripheral wall of the nozzle.

2. The dispensing device according to claim 1, wherein the remaining wall is limited from being pushed in by contacting a projection formed on the inner side of the peripheral wall of the nozzle when the remaining wall is pushed in.

3. The dispensing device according to claim 1, wherein the remaining wall is limited from being pushed in by contacting the peripheral wall of the nozzle when the remaining wall is pushed in.

4. The dispensing device according to claim 1, wherein the truncated square pyramidal portion is such that three of the five walls, including the remaining wall, are aligned in the direction of extension of the nozzle, and the remaining wall is a wall located at the rear of the truncated square pyramidal portion.

5. The dispensing device according to claim 4, wherein the peripheral wall of the nozzle between the wall positioned in front of the truncated square pyramidal portion and the tip of the nozzle is formed flat.

6. The dispensing device according to claim 3, wherein the portion of the peripheral wall of the nozzle facing the truncated square pyramidal portion in the radial direction is a recessed portion that is recessed radially inward, and the remaining wall is limited from being pushed in by contacting the recessed portion of the peripheral wall of the nozzle when the remaining wall is pushed in.

7. A dispensing container comprising a dispenser as described in claim 1 and a container body attached to the mouth of the dispenser.

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