Storage body

Abstract

To provide a storage body capable of having a nozzle cap attached to and detached from a container while suppressed from rotating together with a measurement cap.SOLUTION: A storage body comprises a container which has a mouth part open at one side in an axial direction and contains contents, and a nozzle cap which is mounted detachably on the mouth part. The mouth part has a polygonal cylindrical fitting part which extends along a center axis. The fitting part has four or more fitting outer side surfaces which face radially outward. The nozzle cap has a polygonal cylindrical outer cylinder part which extends along the center axis. The outer cylinder part has four or more outer cylinder inner side faces which are arranged radially outside the mouth part and face radially inward. At least one fitting outer side surface is provided with a first projection part which protrudes radially outward from the fitting outer side surface. At least one outer cylinder inner side surface is provided with a second projection part which protrudes radially inward from the outer cylinder inner side surface. The surface of the second projection part which faces one axial side faces the first projection part in the axial direction.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a container.

Background Art

[0002] There is known a container with a cap having a container, a nozzle cap that is fitted to the mouth of the container and has a pouring cylinder, and a measuring cap that is detachably screwed to the nozzle cap and covers the pouring cylinder and enables measurement of the content (for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the above container with a cap, when removing the measuring cap from the nozzle cap by rotating the measuring cap in the circumferential direction with respect to the nozzle cap, there is a risk that the nozzle cap may come off from the mouth of the container because the nozzle cap rotates together with the measuring cap. In order to suppress such co-rotation, there is known a container with a cap provided with ratchets that contact each other in the circumferential direction at the mouth of the container and the nozzle cap. However, in such a container with a cap, in order to remove the nozzle cap from the container, it was necessary to break the ratchet. Therefore, it was difficult to attach the nozzle cap to the container again.

[0005] The present invention has been made in consideration of the above points, and one of the objects is to provide a container that can attach and detach a nozzle cap to and from the container while suppressing co-rotation of the nozzle cap with the measuring cap.

Means for Solving the Problems

[0006] The present invention includes the following configurations. [1] A container having an opening on the upper side for accommodating contents, and a nozzle cap detachably attached to the opening, wherein the opening has a polygonal cylindrical attachment portion extending along the central axis of the container, the attachment portion has four or more attachment outer surfaces facing the outer side in the radial direction centered on the central axis, the nozzle cap has an outer cylindrical portion that is a polygonal cylinder extending along the central axis, the outer cylindrical portion is disposed on the outer side in the radial direction than the opening, and has four or more outer cylindrical inner surfaces facing the inner side in the radial direction, at least one of the attachment outer surfaces is provided with a first protrusion protruding outward in the radial direction from the attachment outer surface, at least one of the outer cylindrical inner surfaces is provided with a second protrusion protruding inward in the radial direction from the outer cylindrical inner surface, and the surface facing the upper side of the second protrusion faces the first protrusion in the axial direction, which is the direction in which the central axis extends. A container. [2] The container according to [1], wherein each of the number of the attachment outer surfaces and the number of the outer cylindrical inner surfaces is four or more and twelve or less. [3] The container according to [1] or [2], wherein the number of the attachment outer surfaces is the same as the number of the outer cylindrical inner surfaces. [4] The container according to any one of [1] to [3], wherein the first protrusion is provided on at least two or more of the attachment outer surfaces, and the second protrusion is provided on at least two or more of the outer cylindrical inner surfaces. [5] The container according to any one of [1] to [4], wherein two or more and five or less of the first protrusions are provided on the attachment outer surface at intervals along the axial direction, and two or more and five or less of the second protrusions are provided on the outer cylindrical inner surface at intervals along the axial direction. [Advantages of the Invention]

[0007] In the present invention, it is possible to provide a container in which the nozzle cap can be attached to and detached from the container while suppressing the co-rotation of the nozzle cap with the metering cap. [Brief Description of the Drawings]

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Modes for Carrying Out the Invention

[0009] Hereinafter, an example of the container of the present invention will be shown and described with reference to the drawings. In the following description, the dimensions and the like of the drawings exemplified are merely examples, and the present invention is not necessarily limited thereto, and it can be appropriately modified and implemented without changing the gist thereof. Further, in the following drawings, in order to make each configuration easy to understand, the scale, number, etc. in the actual structure and each structure may be made different.

[0010] In each drawing, the Z-axis is shown as appropriate. The Z-axis is the direction in which the central axis line J, which is the central axis of the container in the embodiment described below, extends. The central axis line J shown as appropriate in each figure is a virtual axis line. In the following description, the direction in which the central axis line J extends, that is, the direction parallel to the Z-axis, is referred to as the "axial direction". In the present embodiment, the axial direction is the vertical direction. In the following description, the side to which the arrow of the Z-axis points in the axial direction (+Z side) is referred to as the "upper side", and the side opposite to the side to which the arrow of the Z-axis points in the axial direction (-Z side) is referred to as the "lower side".

[0011] In the following description, the radial direction centered on the central axis line J is simply referred to as the "radial direction", the outside in the radial direction is simply referred to as the "outer side in the radial direction", and the inside in the radial direction is simply referred to as the "inner side in the radial direction". The circumferential direction centered on the central axis line J is simply referred to as the "circumferential direction". The circumferential direction is indicated by an arrow θ in each figure. The side to which the arrow θ points in the circumferential direction is referred to as the "one side in the circumferential direction". The side opposite to the side to which the arrow θ points in the circumferential direction is referred to as the "other side in the circumferential direction". The one side in the circumferential direction is the side that advances clockwise around the central axis line J when viewed from the upper side (+θ side). The other side in the circumferential direction is the side that advances counterclockwise around the central axis line J when viewed from the upper side (-θ side).

[0012] <Embodiment> FIG. 1 is a cross-sectional view showing the container 10 of the present embodiment. FIG. 2 is a top view showing the mouth portion 21 of the present embodiment. FIG. 3 is a perspective view showing the mouth portion 21 of the present embodiment. FIG. 4 is a perspective view showing the nozzle cap 30 of the present embodiment. FIG. 5 is a bottom view showing the nozzle cap 30 of the present embodiment. As shown in FIG. 1, the container 10 of the present embodiment includes a container 20, a nozzle cap 30, and a measuring cap 40.

[0013] The container 20 is a bottle for containing contents. The container 20 is open at the upper side. The contents are, for example, liquid or powdered laundry detergents, liquid bleaches, fabric softeners, dishwasher detergents, and liquid mouthwashes, etc. In the present embodiment, the container 20 is made of resin. As the resin constituting the container 20, polypropylene, high-density polyethylene, low-density polyethylene, polyethylene terephthalate, etc. can be used. The resin constituting the container 20 is preferably high-density polyethylene or polyethylene terephthalate. In the present embodiment, the container 20 is constituted by high-density polyethylene. In the present embodiment, the longitudinal elastic modulus of the container 20 is 500 MPa or more and 5000 MPa or less. The container 20 is formed by methods such as blow molding, stretch blow molding, and injection blow molding. The container 20 has a housing portion 20a and a mouth portion 21.

[0014] The housing portion 20a is the lower portion of the container 20. The housing portion 20a is open at the upper side. The internal space of the housing portion 20a is the housing space 20b. The housing space 20b contains contents (not shown).

[0015] The mouth portion 21 is a cylindrical shape extending in the axial direction. In the present embodiment, the mouth portion 21 is a substantially cylindrical shape centered on the central axis J. The mouth portion 21 is open at the upper side. The mouth portion 21 has a mounting portion 24 and a tip cylinder portion 28.

[0016] The mounting portion 24 is a cylindrical shape extending in the axial direction. As shown in FIGS. 2 and 3, the mounting portion 24 is a polygonal cylindrical shape extending along the central axis J. The mounting portion 24 is preferably a cylindrical shape from a quadrangle to a dodecagon extending along the central axis J. The mounting portion 24 is more preferably a cylindrical shape from a hexagon to a decagon extending along the central axis J. In the present embodiment, the mounting portion 24 is an octagonal cylindrical shape extending along the central axis J. As shown in FIG. 1, the lower end of the mounting portion 24 is connected to the upper end of the housing portion 20a. As shown in FIG. 2, the mounting portion 24 has a plurality of mounting outer surfaces 25, a first protrusion 26, and a plurality of corner portions 27.

[0017] The plurality of mounting outer surfaces 25 are the surfaces facing the radially outer side among the surfaces of the mounting portion 24. The mounting portion 24 has four or more mounting outer surfaces 25. The number of the mounting outer surfaces 25 of the mounting portion 24 is preferably four or more and twelve or less. In the present embodiment, the mounting portion 24 has eight mounting outer surfaces 25. Each mounting outer surface 25 is arranged along the circumferential direction. The mounting outer surfaces 25 arranged adjacent to each other in the circumferential direction are connected in the circumferential direction. In the present embodiment, the mounting portion 24 has eight corner portions 27. Each corner portion 27 is a portion where the mounting outer surfaces 25 arranged adjacent to each other in the circumferential direction are connected. When viewed from the axial direction, a first distance L1, which is the distance between the central axis J and the corner portion 27, is longer than a second distance L2, which is the shortest distance between the central axis J and the mounting outer surface 25. The plurality of mounting outer surfaces 25 include a plurality of first mounting outer surfaces 25a and a plurality of second mounting outer surfaces 25b.

[0018] In the present embodiment, the plurality of mounting outer surfaces 25 include four first mounting outer surfaces 25a and four second mounting outer surfaces 25b. In the present embodiment, the first mounting outer surfaces 25a and the second mounting outer surfaces 25b are alternately arranged along the circumferential direction. The arrangement of the first mounting outer surfaces 25a and the second mounting outer surfaces 25b is not limited to the present embodiment. For example, two first mounting outer surfaces 25a and two second mounting outer surfaces 25b may be alternately arranged along the circumferential direction. A first protrusion 26 is provided on each first mounting outer surface 25a. That is, the first protrusion 26 is provided on at least one mounting outer surface 25. Also, the first protrusion 26 is provided on at least two or more mounting outer surfaces 25. The number of the mounting outer surfaces 25 on which the first protrusion 26 is provided is not limited to the present embodiment and may be one or more. The number of the mounting outer surfaces 25 on which the first protrusion 26 is provided is preferably two or more.

[0019] As shown in FIG. 3, the first protrusion 26 protrudes radially outward from the first mounting outer surface 25a. The first protrusion 26 has a substantially rectangular parallelepiped shape extending in the circumferential direction. The number of the first protrusions 26 provided on one first mounting outer surface 25a is preferably 5 or less. More preferably, the number of the first protrusions 26 provided on one first mounting outer surface 25a is 2 or more and 3 or less. When the number of the first protrusions 26 provided on one first mounting outer surface 25a is 2 or more, the first protrusions 26 are arranged at intervals along the axial direction. As shown in FIG. 2, in the present embodiment, two first protrusions 26 are provided on each first mounting outer surface 25a. The first protrusions 26 are arranged at intervals along the axial direction.

[0020] As shown in FIG. 3, in the present embodiment, a first ratio R1, which is the ratio of the circumferential dimension Lp1 of the first protrusion 26 to the circumferential dimension Ls1 of the first mounting outer surface 25a, that is, the mounting outer surface 25, is 20% or more and 100% or less. In the present embodiment, a second ratio R2, which is the ratio of the axial dimension Wp1 of the first protrusion 26 to the axial dimension Ws1 of the first mounting outer surface 25a, that is, the mounting outer surface 25, is 10% or more and 33% or less. As shown in FIG. 1, in the present embodiment, the radial dimension Hp1 of the first protrusion 26 is 0.2 mm or more and 3.0 mm or less. Further, the radial thickness of the mounting portion 24 is 1.0 mm or more and 3.5 mm or less. As described above, the longitudinal elastic modulus of the container 20 is 500 MPa or more and 5000 MPa or less. Therefore, the longitudinal elastic modulus of the mounting portion 24 is 500 MPa or more and 5000 MPa or less.

[0021] As shown in FIG. 3, the tip cylinder portion 28 is a cylindrical shape protruding upward from the upper end of the mounting portion 24. The tip cylinder portion 28 has a substantially cylindrical shape centered on the central axis J. The upper end of the tip cylinder portion 28 is the upper end of the container 20. The tip cylinder portion 28 is open upward.

[0022] The nozzle cap 30 shown in Fig. 1 is detachably attached to the mouth portion 21 of the container 20. As shown in Fig. 4, the nozzle cap 30 is cylindrical and extends axially about the central axis J. In the present embodiment, the nozzle cap 30 is made of resin. As the resin constituting the nozzle cap 30, polypropylene, high-density polyethylene, low-density polyethylene, etc. can be used. The resin constituting the nozzle cap 30 is preferably polypropylene. In the present embodiment, the nozzle cap 30 is constituted by polypropylene. As described above, in the present embodiment, the container 20 is constituted by high-density polyethylene. Therefore, the nozzle cap 30 and the container 20 are constituted by different resin materials. In the present embodiment, the longitudinal elastic modulus of the nozzle cap 30 is 600 MPa or more and 4000 MPa or less. In the present embodiment, the nozzle cap 30 is integrally formed by injection molding. As shown in Fig. 1, the nozzle cap 30 has an inner cylinder portion 31, a bottom wall portion 32, an outer cylinder portion 33, an outer mouth portion 37, and a nozzle portion 38.

[0023] The inner cylinder portion 31 is substantially cylindrical and extends axially about the central axis J. The inner cylinder portion 31 is disposed inside the attachment portion 24.

[0024] The bottom wall portion 32 projects downward from the lower end of the inner cylinder portion 31. The bottom wall portion 32 is substantially V-shaped and open upward when viewed in the radial direction. The bottom wall portion 32 is disposed inside the mouth portion 21. A communication portion 32b is provided in the bottom wall portion 32. The communication portion 32b is a hole that penetrates the bottom wall portion 32 in the axial direction.

[0025] The nozzle portion 38 extends upward from the bottom wall portion 32. As shown in FIG. 4, the nozzle portion 38 is in the shape of a gutter having a U-shaped cross-sectional shape when viewed from above. As shown in FIG. 1, the interior of the nozzle portion 38 communicates with the accommodation space 20b of the container 20 via the communication portion 32b. Thereby, the contents accommodated inside the accommodation space 20b are poured into the interior of the nozzle portion 38 via the communication portion 32b. The nozzle portion 38 guides the pouring of the contents to the outside of the container 10 for the contents. When viewed in the axial direction, the area of the opening of the nozzle portion 38 is smaller than the area of the opening of the tip cylinder portion 28 of the mouth portion 21. In other words, when viewed in the axial direction, the area of the opening of the tip cylinder portion 28 is wider than the area of the opening of the nozzle portion 38.

[0026] The outer mouth portion 37 is cylindrical and protrudes upward from the upper end of the inner cylinder portion 31. As shown in FIG. 4, the outer mouth portion 37 is substantially cylindrical about the central axis J. The upper end of the outer mouth portion 37 is the upper end of the nozzle cap 30. A male screw portion 37a is provided on the outer peripheral surface of the outer mouth portion 37.

[0027] As shown in FIG. 1, the outer cylinder portion 33 is cylindrical and extends in the axial direction. The outer cylinder portion 33 is disposed radially outside the mouth portion 21. As shown in FIG. 5, the outer cylinder portion 33 is polygonal cylindrical and extends along the central axis J. The outer cylinder portion 33 is preferably cylindrical with a shape from a quadrilateral to a dodecagon extending along the central axis J. More preferably, the outer cylinder portion 33 is cylindrical with a shape from a hexagon to a decagon extending along the central axis J. In the present embodiment, the outer cylinder portion 33 is octagonal cylindrical and extends along the central axis J. As shown in FIG. 1, the upper end of the outer cylinder portion 33 is connected to each of the upper end of the inner cylinder portion 31 and the lower end of the outer mouth portion 37. As shown in FIG. 5, the outer cylinder portion 33 has a plurality of outer cylinder inner surfaces 34 and a second protruding portion 35.

[0028] The plurality of inner outer cylinder surfaces 34 are the surfaces facing the inner side in the radial direction among the surfaces of the outer cylinder portion 33. As shown in FIG. 1, each inner outer cylinder surface 34 faces the mounting outer surface 25 in the radial direction. As shown in FIG. 5, the outer cylinder portion 33 has four or more inner outer cylinder surfaces 34. The number of inner outer cylinder surfaces 34 of the outer cylinder portion 33 is four or more and twelve or less. In the present embodiment, the outer cylinder portion 33 has eight inner outer cylinder surfaces 34. As described above, the mounting portion 24 has eight mounting outer surfaces 25. Therefore, in the present embodiment, the number of mounting outer surfaces 25 and the number of inner outer cylinder surfaces 34 are the same. The number of mounting outer surfaces 25 and the number of inner outer cylinder surfaces 34 may be different from each other. Each inner outer cylinder surface 34 is arranged along the circumferential direction. The inner outer cylinder surfaces 34 arranged adjacent to each other in the circumferential direction are connected in the circumferential direction. When viewed from the axial direction, the shortest distance between the central axis J and the inner outer cylinder surface 34 is the third distance L3. The third distance L3 is shorter than the first distance L1 shown in FIG. 2 and longer than the second distance L2. The plurality of inner outer cylinder surfaces 34 include a plurality of first inner outer cylinder surfaces 34a and a plurality of second inner outer cylinder surfaces 34b.

[0029] In the present embodiment, the plurality of inner outer cylinder surfaces 34 include four first inner outer cylinder surfaces 34a and four second inner outer cylinder surfaces 34b. In the present embodiment, the first inner outer cylinder surfaces 34a and the second inner outer cylinder surfaces 34b are alternately arranged along the circumferential direction. The circumferential arrangement of the first inner outer cylinder surfaces 34a and the second mounting outer surfaces 25b is not limited to the present embodiment. For example, two first inner outer cylinder surfaces 34a and two second inner outer cylinder surfaces 34b may be alternately arranged along the circumferential direction. A second protrusion 35 is provided on each first inner outer cylinder surface 34a. That is, the second protrusion 35 is provided on at least one inner outer cylinder surface 34. Further, the second protrusion 35 is provided on at least two or more inner outer cylinder surfaces 34. The number of inner outer cylinder surfaces 34 on which the second protrusion 35 is provided is not limited to the present embodiment and may be one or more. It is preferable that the number of inner outer cylinder surfaces 34 on which the second protrusion 35 is provided is two or more.

[0030] As shown in FIG. 1, in the present embodiment, each inner side surface 34a of the first outer cylinder faces the different first mounting outer surfaces 25a in the radial direction. Although not shown, each inner side surface 34b of the second outer cylinder faces the different second mounting outer surfaces 25b in the radial direction.

[0031] As shown in FIG. 5, the second protrusion 35 protrudes radially inward from the inner side surface 34a of the first outer cylinder. The second protrusion 35 has a substantially rectangular parallelepiped shape extending in the circumferential direction. The number of the second protrusions 35 provided on one inner side surface 34a of the first outer cylinder is preferably 5 or less. More preferably, the number of the second protrusions 35 provided on one inner side surface 34a of the first outer cylinder is 2 or more and 3 or less. When the number of the second protrusions 35 provided on one inner side surface 34a of the first outer cylinder is 2 or more, the second protrusions 35 are arranged at intervals along the axial direction. In the present embodiment, two second protrusions 35 are provided on each inner side surface 34a of the first outer cylinder. The second protrusions 35 are arranged at intervals along the axial direction.

[0032] As shown in FIG. 1, when viewed from the axial direction, each second protrusion 35 is arranged to overlap the first protrusion 26. Each second protrusion 35 faces the first protrusion 26 in the axial direction. As going from the upper side to the lower side, the first protrusions 26 and the second protrusions 35 are alternately arranged. In the present embodiment, one second protrusion 35 is arranged between two first protrusions 26, and another second protrusion 35 is arranged below the first protrusion 26 arranged on the lower side. Thereby, the surface facing the upper side of each second protrusion 35 faces the first protrusion 26 in the axial direction. The second protrusions 35 and the first protrusions 26 may be arranged in contact with each other in the axial direction, or may be arranged to be separated from each other in the axial direction with a slight gap. When the nozzle cap 30 tries to move upward with respect to the mouth portion 21, each second protrusion 35 comes into contact with the first protrusion 26 in the axial direction. Thereby, it is possible to prevent the nozzle cap 30 from coming off upward with respect to the mouth portion 21.

[0033] As shown in FIG. 4, in the present embodiment, a third ratio R3, which is the ratio of the circumferential dimension Lp2 of the second protrusion 35 to the circumferential dimension Ls2 of the inner surface 34a of the first outer cylinder, that is, the inner surface 34 of the outer cylinder, is 20% or more and 100% or less. In the present embodiment, a fourth ratio R4, which is the ratio of the axial dimension Wp2 of the second protrusion 35 to the axial dimension Ws2 of the inner surface 34a of the first outer cylinder, that is, the inner surface 34 of the outer cylinder, is 10% or more and 33% or less. As shown in FIG. 1, in the present embodiment, the radial dimension Hp2 of the second protrusion 35 is 0.2 mm or more and 3.0 mm or less. Further, the radial thickness of the outer cylinder portion 33 is 0.5 mm or more and 2.5 mm or less. As described above, the longitudinal elastic modulus of the nozzle cap 30 is 600 MPa or more and 4000 MPa or less. Therefore, the longitudinal elastic modulus of the outer cylinder portion 33 is 600 MPa or more and 4000 MPa or less.

[0034] As shown in FIG. 1, the measuring cap 40 is a cylindrical shape extending in the axial direction around the central axis J. The measuring cap 40 is open at the lower side. The measuring cap 40 is detachably attached to the outer opening 37 of the nozzle cap 30. When the user uses the content accommodated inside the container 20, the measuring cap 40 is removed from the nozzle cap 30, measures the amount of the content, and serves as a container for accommodating the content to be used. In the present embodiment, the measuring cap 40 is made of resin. As the resin constituting the measuring cap 40, for example, an olefin-based thermoplastic synthetic resin such as polypropylene can be used. In the present embodiment, the measuring cap 40 is formed by injection molding, for example. By using polypropylene resin as the material of the measuring cap 40, it is excellent in moldability and content suitability and has transparency, so that the measuring cap 40 excellent in measurability can be molded. The measuring cap 40 has a cap main body portion 41, a flange portion 42, a cap inner wall portion 43, and a cap outer wall portion 45.

[0035] The cap main body 41 is substantially cylindrical and extends axially about the central axis J. The upper portion of the nozzle portion 38 is accommodated inside the cap main body 41. The flange portion 42 is an annular plate shape that extends radially outward from the lower end of the cap main body 41. The plate surface of the flange portion 42 faces the axial direction. The cap inner wall portion 43 projects downward from the flange portion 42. The cap inner wall portion 43 is substantially cylindrical and surrounds the central axis J. The outer peripheral surface of the cap inner wall portion 43 is in radial contact with the inner peripheral surface of the outer opening portion 37.

[0036] The cap outer wall portion 45 extends downward from the radially outer edge of the flange portion 42. The cap outer wall portion 45 is substantially cylindrical about the central axis J. The cap outer wall portion 45 is open at the lower side. The cap outer wall portion 45 surrounds the outer opening portion 37 of the nozzle cap 30 from the radially outer side. A female thread portion 45a is provided on the inner peripheral surface of the cap outer wall portion 45. By screwing the female thread portion 45a and the male thread portion 37a provided on the outer opening portion 37, the measuring cap 40 is attached to the nozzle cap 30. Further, by screwing the female thread portion 45a and the male thread portion 37a, the cap inner wall portion 43 seals the outer opening portion 37 in a liquid-tight manner from the inside in the radial direction.

[0037] In this embodiment, when the consumer removes the measuring cap 40 from the nozzle cap 30 and when attaching the measuring cap 40 to the nozzle cap 30, the rotational torque applied to the measuring cap 40 is about 70 N·cm. In the following description, such rotational torque is referred to as the measuring cap attachment / detachment torque Tm. Also, in this embodiment, in the manufacturing process of the container 10, the rotational torque applied to the measuring cap 40 when the operator attaches the measuring cap 40 to the nozzle cap 30 is about 100 N·cm. In the following description, such rotational torque is referred to as the tightening torque Tc.

[0038] FIG. 6 is a first perspective view showing an operation of removing the nozzle cap 30 from the container 20 in the present embodiment. FIG. 7 is a second perspective view showing an operation of removing the nozzle cap 30 from the container 20 in the present embodiment. FIG. 8 is a third perspective view showing an operation of removing the nozzle cap 30 from the container 20 in the present embodiment.

[0039] Next, an operation of removing the nozzle cap 30 from the mouth portion 21 of the container 20 will be described. As shown in FIG. 6, when the nozzle cap 30 is attached to the mouth portion 21, each first outer cylinder inner surface 34a is radially opposed to a different first attachment outer surface 25a, and each second outer cylinder inner surface 34b is radially opposed to a different second attachment outer surface 25b. Further, the first protrusions 26 and the second protrusions 35 are alternately arranged from the upper side to the lower side. When removing the nozzle cap 30 from the mouth portion 21, the consumer first rotates the nozzle cap 30 in the circumferential direction with respect to the mouth portion 21. In the present embodiment, the consumer rotates the nozzle cap 30 about 45° in the circumferential direction with respect to the mouth portion 21. The direction of rotating the nozzle cap 30 with respect to the container 20 may be one side (+θ side) in the circumferential direction or the other side (−θ side) in the circumferential direction.

[0040] As described above, the third distance L3, which is the shortest distance between the central axis J shown in FIG. 5 and the outer cylinder inner surface 34, is shorter than the first distance L1, which is the distance between the central axis J shown in FIG. 2 and the corner portion 27. Therefore, when the nozzle cap 30 is rotated in the circumferential direction with respect to the mouth portion 21, each outer cylinder inner surface 34 and the corner portion 27 come into radial contact. As a result, although not shown, the outer cylinder portion 33 is elastically deformed radially outward, and the attachment portion 24 is elastically deformed radially inward. Therefore, a restoring force directed radially outward of the attachment portion 24 is applied to the outer cylinder portion 33, and a restoring force directed radially inward of the outer cylinder portion 33 is applied to the attachment portion 24, so that the frictional force between the outer cylinder portion 33 and the attachment portion 24 can be increased. Thereby, the rotational torque for rotating the nozzle cap 30 in the circumferential direction with respect to the mouth portion 21 can be increased.

[0041] As shown in FIG. 7, when the user rotates the nozzle cap 30 about 45° in the circumferential direction with respect to the mouth portion 21, each first outer cylinder inner surface 34a faces radially opposite different second mounting outer surfaces 25b, and each second outer cylinder inner surface 34b faces radially opposite different first mounting outer surfaces 25a. Thereby, when viewed in the axial direction, each second protruding portion 35 is disposed at a position that does not overlap with each first protruding portion 26. Therefore, the user can remove the nozzle cap 30 from the mouth portion 21 as shown in FIG. 8 by moving the nozzle cap 30 upward with respect to the mouth portion 21. As described above, when viewed in the axial direction, the area of the opening of the tip cylinder portion 28 is larger than the area of the opening of the nozzle portion 38. Therefore, the user can refill the contents through the mouth portion 21 by removing the nozzle cap 30 from the mouth portion 21. Therefore, the burden of the user's work of refilling the contents can be reduced.

[0042] Also, although illustration is omitted, the procedure for the user to attach the nozzle cap 30 to the mouth portion 21 is performed by the reverse procedure of the above-described procedure for removing the nozzle cap 30 from the mouth portion 21. Therefore, also in the operation of the user attaching the nozzle cap 30 to the mouth portion 21 of the container 20, the rotational torque for rotating the nozzle cap 30 in the circumferential direction with respect to the mouth portion 21 can be increased. In the following description, the rotational torque for rotating the nozzle cap 30 in the circumferential direction with respect to the mouth portion 21 is referred to as the nozzle rotational torque Tn. In the present embodiment, the nozzle rotational torque Tn is 100 N·cm or more and 500 N·cm or less. The nozzle rotational torque Tn is preferably 200 N·cm or more and 300 N·cm or less. In the present embodiment, the nozzle rotational torque Tn is larger than the metering cap attachment / detachment torque Tm and the tightening torque Tc.

[0043] According to the present embodiment, the mouth portion 21 has a polygonal cylindrical mounting portion 24 extending along the central axis J. The mounting portion 24 has four or more mounting outer surfaces 25 facing the radially outer side. The nozzle cap 30 has an outer cylindrical portion 33 which is a polygonal cylinder extending along the central axis J. The outer cylindrical portion 33 is disposed radially outside the mouth portion 21 and has four or more inner surfaces 34 of the outer cylinder facing the radially inner side. At least one of the mounting outer surfaces 25 is provided with a first protrusion 26 protruding radially outward from the mounting outer surface 25. At least one of the inner surfaces 34 of the outer cylinder is provided with a second protrusion 35 protruding radially inward from the inner surface 34 of the outer cylinder. The surface facing the upper side of the second protrusion 35 is axially opposed to the first protrusion 26. Therefore, as described above, when the nozzle cap 30 is rotated in the circumferential direction with respect to the mouth portion 21, the outer cylindrical portion 33 is elastically deformed radially outward, and the mounting portion 24 is elastically deformed radially inward. As a result, as described above, the frictional force between the outer cylindrical portion 33 and the mounting portion 24 can be increased, so that the nozzle rotation torque Tn, which is the rotational torque for rotating the nozzle cap 30 in the circumferential direction with respect to the mouth portion 21, can be increased. Therefore, the nozzle rotation torque Tn can be made larger than the metering cap attachment / detachment torque Tm, which is the rotational torque applied to the metering cap 40 when the consumer removes the metering cap 40 from the nozzle cap 30 and when the consumer attaches the metering cap 40 to the nozzle cap 30. Thereby, when the metering cap 40 is attached to and detached from the nozzle cap 30, it is possible to prevent the nozzle cap 30 from rotating together with the metering cap 40. Further, the consumer can attach and detach the nozzle cap 30 to and from the container 20 by applying a rotational torque greater than the nozzle rotation torque Tn to the nozzle cap 30. Thus, the nozzle cap 30 can be attached to and detached from the container 20 while preventing the nozzle cap 30 from rotating together with the metering cap 40. Therefore, as described above, since the consumer can refill the contents through the mouth portion 21, the burden of the work of the consumer refilling the contents can be reduced.

[0044] Further, in the present embodiment, as described above, when the nozzle cap 30 is attached to the mouth portion 21, the surface facing the upper side of the second protruding portion 35 faces the first protruding portion 26 in the axial direction. Therefore, as described above, when the nozzle cap 30 tries to move upward with respect to the mouth portion 21, the second protruding portion 35 comes into contact with the first protruding portion 26 in the axial direction. Thereby, it is possible to prevent the nozzle cap 30 from coming off upward with respect to the mouth portion 21.

[0045] Also, in the present embodiment, as described above, the consumer can remove the nozzle cap 30 from the container 20. Further, as described above, the nozzle cap 30 and the container 20 are made of different resin materials. Therefore, when the container 10 is discarded, the nozzle cap 30 and the container 20 can be separated and discarded, so that the recyclability can be improved.

[0046] Also, in the present embodiment, the nozzle rotation torque Tn is larger than the tightening torque Tc which is the rotation torque applied to the measuring cap 40 when the operator attaches the measuring cap 40 to the nozzle cap 30 in the manufacturing process of the container 10. Therefore, in the manufacturing process of the container 10, it is possible to prevent the nozzle cap 30 from rotating together with the measuring cap 40.

[0047] According to the present embodiment, each of the number of the mounting outer surfaces 25 and the number of the outer cylinder inner surfaces 34 is 4 or more and 12 or less. When each of the number of the mounting outer surfaces 25 and the number of the outer cylinder inner surfaces 34 is 3, the angle of the corner portion 27 of the mounting portion 24 becomes too small, so the outer cylinder portion 33 is likely to be caught by the corner portion 27. Therefore, the frictional force between the outer cylinder portion 33 and the mounting portion 24 becomes too large when the nozzle cap 30 is rotated in the circumferential direction with respect to the mouth portion 21. As a result, the nozzle rotation torque Tn becomes too large, making it difficult to attach and detach the nozzle cap 30 with respect to the mouth portion 21. When the number of mounting outer surfaces 25 and the number of inner outer cylinder surfaces 34 are each 12 or more, the shapes of the mounting portion 24 and the outer cylinder portion 33 as viewed in the axial direction become nearly annular, so that the nozzle rotation torque Tn becomes too small. Therefore, when attaching and detaching the metering cap 40 to and from the nozzle cap 30, the nozzle cap 30 may rotate together with the metering cap 40. In contrast, in the present embodiment, since the number of mounting outer surfaces 25 and the number of inner outer cylinder surfaces 34 are each 4 or more, it is possible to suppress the nozzle rotation torque Tn from becoming too large. As a result, the consumer can easily attach and detach the nozzle cap 30 to and from the mouth portion 21. Further, in the present embodiment, since the number of mounting outer surfaces 25 and the number of inner outer cylinder surfaces 34 are each 12 or less, it is possible to suppress the nozzle rotation torque Tn from becoming smaller than the metering cap attachment / detachment torque Tm. Thereby, when attaching and detaching the metering cap 40 to and from the nozzle cap 30, it is possible to suppress the nozzle cap 30 from rotating together with the metering cap 40.

[0048] According to the present embodiment, the number of mounting outer surfaces 25 and the number of inner outer cylinder surfaces 34 are the same as each other. Therefore, since each mounting outer surface 25 can easily support each inner outer cylinder surface 34 in the radial direction, it is easy to suppress rattling of the nozzle cap 30 in the radial direction with respect to the mouth portion 21.

[0049] According to the present embodiment, the first protrusion 26 is provided on at least two or more mounting outer surfaces 25, and the second protrusion 35 is provided on at least two or more inner outer cylinder surfaces 34. Therefore, compared with the case where the first protrusion 26 is provided only on one mounting outer surface 25 and the second protrusion 35 is provided only on one inner outer cylinder surface 34, at a plurality of locations in the circumferential direction, each second protrusion 35 and each first protrusion 26 can be opposed to each other in the axial direction. Therefore, when the nozzle cap 30 tends to move upward with respect to the mouth portion 21, since the second protrusion 35 comes into contact with the first protrusion 26 in the axial direction at a plurality of locations in the circumferential direction, it is possible to more preferably suppress the nozzle cap 30 from coming off upward with respect to the mouth portion 21.

[0050] According to the present embodiment, on the mounting outer surface 25, two or more and five or less first protrusions 26 are provided at intervals along the axial direction, and on the inner surface 34 of the outer cylinder, two or more and five or less second protrusions 35 are provided at intervals along the axial direction. When the number of the first protrusions 26 provided on the mounting outer surface 25 and the number of the second protrusions 35 provided on the inner surface 34 of the outer cylinder are each one, if at least one of the first protrusions 26 and the second protrusions 35 is not formed into a desired shape due to molding defects, there is a possibility that the second protrusions 35 and the first protrusions 26 cannot face each other in the axial direction. Therefore, there is a possibility that the nozzle cap 30 comes off upward with respect to the mouth portion 21. When the number of the first protrusions 26 provided on the mounting outer surface 25 and the number of the second protrusions 35 provided on the inner surface 34 of the outer cylinder are each six or more, the axial dimensions of the gaps between the first protrusions 26 and the axial dimensions of the gaps between the second protrusions 35 each become too small. Therefore, when the axial dimensional tolerances of each of the first protrusions 26 and each of the second protrusions 35 are large, when the nozzle cap 30 is attached to the mouth portion 21, the first protrusions 26 and the second protrusions 35 are likely to come into contact with each other in the circumferential direction, making it difficult to attach the nozzle cap 30 to the mouth portion 21. In contrast, in the present embodiment, since the number of the first protrusions 26 provided on the mounting outer surface 25 and the number of the second protrusions 35 provided on the inner surface 34 of the outer cylinder are each two or more, even if one first protrusion 26 and one second protrusion 35 are not formed into a desired shape due to molding defects, the nozzle cap 30 can be prevented from coming off upward with respect to the mouth portion 21 by the other first protrusions 26 and the other second protrusions 35. Further, in the present embodiment, since the number of the first protrusions 26 provided on the mounting outer surface 25 and the number of the second protrusions 35 provided on the inner surface 34 of the outer cylinder are each five or less, it is possible to prevent the axial dimensions of the gaps between the first protrusions 26 and the axial dimensions of the gaps between the second protrusions 35 from becoming too small. Thereby, when the nozzle cap 30 is attached to the mouth portion 21, it is possible to prevent the first protrusion 26 and the second protrusion 35 from contacting each other in the circumferential direction. Therefore, the nozzle cap 30 can be easily attached to the mouth portion 21.

[0051] According to the present embodiment, the first ratio R1, that is, the ratio of the circumferential dimension Lp1 of the first protrusion 26 to the circumferential dimension Ls1 of the mounting outer surface 25 is 20% or more and 100% or less, and the third ratio R3, that is, the ratio of the circumferential dimension Lp2 of the second protrusion 35 to the circumferential dimension Ls2 of the inner surface 34 of the outer cylinder is 20% or more and 100% or less. Therefore, since it is possible to prevent the circumferential dimension Lp1 of the first protrusion 26 and the circumferential dimension Lp2 of the second protrusion 35 from becoming too small, it is easy to arrange the first protrusion 26 and the second protrusion 35 so as to overlap each other when viewed in the axial direction. Thereby, even if the nozzle cap 30 tries to move upward with respect to the mouth portion 21, the second protrusions 35 and the first protrusions 26 can contact each other more stably in the axial direction. Therefore, it is possible to more preferably prevent the nozzle cap 30 from coming off upward with respect to the mouth portion 21.

[0052] According to the present embodiment, the second ratio R2, that is, the ratio of the axial dimension Wp1 of the first protrusion 26 to the axial dimension Ws1 of the mounting outer surface 25, is 10% or more and 33% or less, and the fourth ratio R4, that is, the ratio of the axial dimension Wp2 of the second protrusion 35 to the axial dimension Ws2 of the inner surface 34 of the outer cylinder, is 10% or more and 33% or less. When each of the second ratio R2 and the fourth ratio R4 is less than 10%, the axial dimensions Wp1 of the first protrusion 26 and Wp2 of the second protrusion 35 are each too small, so the axial strength of each of the first protrusion 26 and the second protrusion 35 becomes too small. Therefore, when the nozzle cap 30 moves upward with respect to the mouth portion 21, if the second protrusion 35 and the first protrusion 26 come into contact with each other in the axial direction, at least one of the first protrusion 26 and the second protrusion 35 may be damaged. When each of the second ratio R2 and the fourth ratio R4 is greater than 33%, the axial dimensions of the gaps between the first protrusions 26 and the axial dimensions of the gaps between the second protrusions 35 each become too small. Therefore, as described above, when the nozzle cap 30 is attached to the mouth portion 21, the first protrusion 26 and the second protrusion 35 are likely to come into contact with each other in the circumferential direction, making it difficult to attach the nozzle cap 30 to the mouth portion 21. In contrast, in the present embodiment, since each of the second ratio R2 and the fourth ratio R4 is 10% or more, it is possible to suppress the axial strength of each of the first protrusion 26 and the second protrusion 35 from becoming too small. Therefore, when the nozzle cap 30 moves upward with respect to the mouth portion 21, even if the second protrusion 35 and the first protrusion 26 come into contact with each other in the axial direction, it is possible to suppress the first protrusion 26 and the second protrusion 35 from being damaged. Further, in the present embodiment, since each of the second ratio R2 and the fourth ratio R4 is 33% or less, it is possible to more preferably suppress the axial dimensions of the gaps between the first protrusions 26 and the axial dimensions of the gaps between the second protrusions 35 from becoming too small. Thereby, when the nozzle cap 30 is attached to the mouth portion 21, it is possible to more preferably suppress the first protrusion 26 and the second protrusion 35 from coming into contact with each other in the circumferential direction. Therefore, the nozzle cap 30 can be more easily attached to the mouth portion 21.

[0053] According to the present embodiment, the radial dimension Hp1 of the first protrusion 26 is 0.2 mm or more and 3.0 mm or less, and the radial dimension Hp2 of the second protrusion 35 is 0.2 mm or more and 3.0 mm or less. When each of the radial dimension Hp1 of the first protrusion 26 and the radial dimension Hp2 of the second protrusion 35 is less than 0.2 mm, it is difficult to arrange the first protrusion 26 and the second protrusion 35 so as to overlap each other when viewed in the axial direction. Therefore, when the nozzle cap 30 moves upward with respect to the mouth portion 21, the second protrusion 35 and the first protrusion 26 are unlikely to come into contact with each other in the axial direction, so there is a risk that the nozzle cap 30 comes off upward with respect to the mouth portion 21. When each of the radial dimension Hp1 of the first protrusion 26 and the radial dimension Hp2 of the second protrusion 35 is greater than 3.0 mm, the outer diameter of the outer cylinder portion 33 becomes too large. Therefore, the housing 10 becomes large in the radial direction. In contrast, in the present embodiment, since each of the radial dimension Hp1 of the first protrusion 26 and the radial dimension Hp2 of the second protrusion 35 is 0.2 mm or more, it is easy to arrange the first protrusion 26 and the second protrusion 35 so as to overlap each other when viewed in the axial direction. Therefore, even when the nozzle cap 30 tries to move upward with respect to the mouth portion 21, each second protrusion 35 and each first protrusion 26 can come into contact with each other more stably in the axial direction. As a result, it is possible to more preferably suppress the nozzle cap 30 from coming off upward with respect to the mouth portion 21. Further, in the present embodiment, since each of the radial dimension Hp1 of the first protrusion 26 and the radial dimension Hp2 of the second protrusion 35 is 3.0 mm or less, it is possible to suppress the outer diameter of the outer cylinder portion 33 from becoming too large. Therefore, it is possible to suppress the housing 10 from becoming large in the radial direction.

[0054] According to this embodiment, the radial thickness of the mounting portion 24 is 1.0 mm or more and 3.5 mm or less, the longitudinal elastic modulus of the mounting portion 24 is 500 MPa or more and 5000 MPa or less, the radial thickness of the outer cylinder portion 33 is 0.5 mm or more and 2.5 mm or less, and the longitudinal elastic modulus of the outer cylinder portion 33 is 600 MPa or more and 4000 MPa or less. Therefore, it is possible to prevent the radial rigidity of each of the mounting portion 24 and the outer cylinder portion 33 from becoming too small or too large. Thus, when the nozzle cap 30 is rotated in the circumferential direction with respect to the mouth portion 21, the elastic deformation amounts of the outer cylinder portion 33 and the mounting portion 24 can be within a desired range, so that the nozzle rotation torque Tn can be within a desired range.

[0055] According to this embodiment, the nozzle rotation torque Tn, that is, the rotation torque for rotating the nozzle cap 30 in the circumferential direction with respect to the mouth portion 21, is 100 N·cm or more and 500 N·cm or less. Therefore, since the nozzle rotation torque Tn can be made larger than the weighing cap attachment / detachment torque Tm, it is possible to prevent the nozzle cap 30 from rotating together with the weighing cap 40 when the weighing cap 40 is attached to or detached from the nozzle cap 30. Further, since it is possible to prevent the nozzle rotation torque Tn from becoming too large, it is easy to prevent at least one of the mounting portion 24 and the outer cylinder portion 33 from being damaged when the nozzle cap 30 is attached to or detached from the mouth portion 21.

[0056] <First Modification Example> FIG. 9 is a top view showing the mouth portion 221 of this modification example. FIG. 10 is a bottom view showing the nozzle cap 230 of this modification example. In this modification example, the container 210 includes a container 220, a nozzle cap 230, and a weighing cap 40 (see FIG. 1). In the following description, components having the same aspects as those of the above-described embodiment are denoted by the same reference numerals, and the description thereof is omitted.

[0057] As shown in FIG. 9, the container 220 has a housing portion 20a and a mouth portion 221. The mouth portion 221 is cylindrical about the central axis J. The mouth portion 221 has a mounting portion 224 and a tip cylinder portion 28. The mounting portion 224 is a polygonal cylinder extending along the central axis J. In this modification, the mounting portion 224 is a square cylinder extending along the central axis J. The mounting portion 224 has a plurality of mounting outer surfaces 225, a first protrusion 226, and a plurality of corner portions 227.

[0058] The plurality of mounting outer surfaces 225 are the surfaces facing the radially outer side among the surfaces of the mounting portion 224. In this modification, the mounting portion 224 has four mounting outer surfaces 225. In this modification, the mounting portion 224 has four corner portions 227. Each corner portion 227 is a portion where the mounting outer surfaces 225 adjacent to each other in the circumferential direction are connected. In this modification, the plurality of mounting outer surfaces 225 include two first mounting outer surfaces 225a and two second mounting outer surfaces 225b. In this modification, the first mounting outer surfaces 225a and the second mounting outer surfaces 225b are alternately arranged along the circumferential direction. Each first mounting outer surface 225a is provided with a first protrusion 226.

[0059] The first protrusion 226 protrudes radially outward from the first mounting outer surface 225a. In this modification, two first protrusions 226 are provided on each first mounting outer surface 225a. Each first protrusion 226 is arranged at intervals along the axial direction. Other configurations of the container 220 in this modification are the same as those of the container 20 in the above-described embodiment.

[0060] As shown in FIG. 10, the nozzle cap 230 has an inner cylinder portion 31, a bottom wall portion 32, an outer cylinder portion 233, an outer mouth portion 37 (see FIG. 4), and a nozzle portion 38 (see FIG. 4). The outer cylinder portion 233 is cylindrical and extends in the axial direction. The outer cylinder portion 233 is arranged radially outside the mouth portion 221. In this modification, the outer cylinder portion 233 is a square cylinder extending along the central axis J. The outer cylinder portion 233 has a plurality of outer cylinder inner surfaces 234 and a second protrusion 235.

[0061] The plurality of inner side surfaces 234 of the outer cylinder are the surfaces facing the inner side in the radial direction among the surfaces of the outer cylinder portion 233. Each inner side surface 234 of the outer cylinder faces the mounting outer side surface 225 in the radial direction. In this modification, the outer cylinder portion 233 has four inner side surfaces 234 of the outer cylinder. In this modification, the plurality of inner side surfaces 234 of the outer cylinder include two first inner side surfaces 234a of the outer cylinder and two second inner side surfaces 234b of the outer cylinder. The first inner side surfaces 234a of the outer cylinder and the second inner side surfaces 234b of the outer cylinder are alternately arranged along the circumferential direction. Although illustration is omitted, each first inner side surface 234a of the outer cylinder faces a different first mounting outer side surface 225a in the radial direction. Although illustration is omitted, each second inner side surface 234b of the outer cylinder faces a different second mounting outer side surface 225b in the radial direction. A second protruding portion 235 is provided on each first inner side surface 234a of the outer cylinder.

[0062] The second protruding portion 235 protrudes radially inward from the first inner side surface 234a of the outer cylinder. In this modification, two second protruding portions 235 are provided on each first inner side surface 234a of the outer cylinder. The second protruding portions 235 are arranged at intervals along the axial direction. The surface facing the upper side of each second protruding portion 235 faces the first protruding portion 226 in the axial direction. Other configurations of the nozzle cap 230 in this modification are the same as those of the nozzle cap 30 in the above-described embodiment.

[0063] According to this modification, as in the above-described embodiment, when the nozzle cap 230 is rotated in the circumferential direction with respect to the mouth portion 221, the outer cylinder portion 233 is elastically deformed radially outward, and the mounting portion 224 is elastically deformed radially inward. Therefore, the nozzle rotation torque Tn can be made larger than the measuring cap attachment / detachment torque Tm. Accordingly, when the measuring cap 40 is attached to and detached from the nozzle cap 230, it is possible to prevent the nozzle cap 230 from rotating together with the measuring cap 40. In addition, the consumer can attach and detach the nozzle cap 230 to and from the container 220 by applying a rotation torque larger than the nozzle rotation torque Tn to the nozzle cap 230. Thus, it is possible to attach and detach the nozzle cap 230 to and from the container 220 while preventing the nozzle cap 230 from rotating together with the measuring cap 40.

[0064] <Second Modification Example> FIG. 11 is a top view showing the mouth portion 321 of this modification example. FIG. 12 is a bottom view showing the nozzle cap 330 of this modification example. In this modification example, the container 310 includes a container 320, a nozzle cap 330, and a measuring cap 40 (see FIG. 1). In the following description, components having the same aspects as those in the above-described embodiment are denoted by the same reference numerals, and the description thereof is omitted.

[0065] As shown in FIG. 11, the container 320 has a storage portion 20a and a mouth portion 321. The mouth portion 321 is cylindrical about the central axis J. The mouth portion 321 has a mounting portion 324 and a tip cylinder portion 28. The mounting portion 324 is a polygonal cylindrical shape extending along the central axis J. In this modification example, the mounting portion 324 is a hexagonal cylindrical shape extending along the central axis J. The mounting portion 324 has a plurality of mounting outer surfaces 325, a first protrusion 326, and a plurality of corner portions 327.

[0066] The plurality of mounting outer surfaces 325 are the surfaces facing the radially outer side among the surfaces of the mounting portion 324. In this modification example, the mounting portion 324 has six mounting outer surfaces 325. In this modification example, the mounting portion 324 has six corner portions 327. In this modification example, the plurality of mounting outer surfaces 325 include three first mounting outer surfaces 325a and three second mounting outer surfaces 325b. A first protrusion 326 is provided on each first mounting outer surface 325a.

[0067] The first protrusion 326 protrudes radially outward from the first mounting outer surface 325a. In this modification example, two first protrusions 326 are provided on each first mounting outer surface 325a. The first protrusions 326 are arranged at intervals along the axial direction. Other configurations of the container 320 in this modification example are the same as those of the container 20 in the above-described embodiment.

[0068] As shown in FIG. 12, the nozzle cap 330 has an inner cylinder portion 31, a bottom wall portion 32, an outer cylinder portion 333, an outer mouth portion 37 (see FIG. 4), and a nozzle portion 38 (see FIG. 4). The outer cylinder portion 333 is a cylinder extending in the axial direction. The outer cylinder portion 333 is disposed radially outside the mouth portion 321. In this modification, the outer cylinder portion 333 is a hexagonal cylinder extending along the central axis J. The outer cylinder portion 333 has a plurality of inner outer cylinder surfaces 334 and a second protruding portion 335.

[0069] The plurality of inner outer cylinder surfaces 334 are the surfaces facing radially inward among the surfaces of the outer cylinder portion 333. Each inner outer cylinder surface 334 is radially opposed to the mounting outer surface 325. In this modification, the outer cylinder portion 333 has six inner outer cylinder surfaces 334. In this modification, the plurality of inner outer cylinder surfaces 334 include three first inner outer cylinder surfaces 334a and three second inner outer cylinder surfaces 334b. The first inner outer cylinder surfaces 334a and the second inner outer cylinder surfaces 334b are alternately arranged along the circumferential direction. Although illustration is omitted, each first inner outer cylinder surface 334a is radially opposed to a different first mounting outer surface 325a. Although illustration is omitted, each second inner outer cylinder surface 334b is radially opposed to a different second mounting outer surface 325b. A second protruding portion 335 is provided on each first inner outer cylinder surface 334a.

[0070] The second protruding portion 335 protrudes radially inward from the first inner outer cylinder surface 334a. In this modification, two second protruding portions 335 are provided on each first inner outer cylinder surface 334a. The second protruding portions 335 are arranged at intervals along the axial direction. The surface facing the upper side of each second protruding portion 335 is axially opposed to each first protruding portion 326. Other configurations of the nozzle cap 330 in this modification are the same as those of the nozzle cap 30 in the above-described embodiment.

[0071] According to this modified example, similar to the above-described embodiment, when the nozzle cap 330 is rotated in the circumferential direction with respect to the mouth portion 321, the outer cylindrical portion 333 is elastically deformed radially outward, and the attachment portion 324 is elastically deformed radially inward. Therefore, the nozzle rotation torque Tn can be made larger than the metering cap attachment / detachment torque Tm. Thus, when the metering cap 40 is attached to and detached from the nozzle cap 330, it is possible to prevent the nozzle cap 330 from rotating together with the metering cap 40. Also, the consumer can attach and detach the nozzle cap 330 to and from the container 320 by applying a rotation torque larger than the nozzle rotation torque Tn to the nozzle cap 330. As a result, the nozzle cap 330 can be attached to and detached from the container 320 while preventing the nozzle cap 330 from rotating together with the metering cap 40.

[0072] <Third Modified Example> FIG. 13 is a top view showing the mouth portion 421 of this modified example. FIG. 14 is a bottom view showing the nozzle cap 430 of this modified example. In this modified example, the container 410 includes a container 420, a nozzle cap 430, and a metering cap 40 (see FIG. 1). In the following description, components having the same configuration as those in the above-described embodiment are denoted by the same reference numerals, and the description thereof is omitted.

[0073] As shown in FIG. 13, the container 420 has a storage portion 20a and a mouth portion 421. The mouth portion 421 is cylindrical about the central axis J. The mouth portion 421 has an attachment portion 424 and a tip cylindrical portion 28. The attachment portion 424 is a polygonal cylindrical shape extending along the central axis J. In this modified example, the attachment portion 424 is a decagonal cylindrical shape extending along the central axis J. The attachment portion 424 has a plurality of attachment outer surfaces 425, a first protrusion 426, and a plurality of corner portions 427.

[0074] The plurality of mounting outer surfaces 425 are the surfaces facing the radially outer side among the surfaces of the mounting portion 424. In this modification, the mounting portion 424 has ten mounting outer surfaces 425. In this modification, the mounting portion 424 has ten corner portions 427. In this modification, the plurality of mounting outer surfaces 425 include five first mounting outer surfaces 425a and five second mounting outer surfaces 425b. A first protrusion 426 is provided on each first mounting outer surface 425a.

[0075] The first protrusion 426 protrudes radially outward from the first mounting outer surface 425a. In this modification, two first protrusions 426 are provided on each first mounting outer surface 425a. The first protrusions 426 are arranged at intervals along the axial direction. Other configurations of the container 420 in this modification are the same as those of the container 20 in the above-described embodiment.

[0076] As shown in FIG. 14, the nozzle cap 430 has an inner cylinder portion 31, a bottom wall portion 32, an outer cylinder portion 433, an outer mouth portion 37 (see FIG. 4), and a nozzle portion 38 (see FIG. 4). The outer cylinder portion 433 is a cylindrical shape extending in the axial direction. The outer cylinder portion 433 is disposed radially outside the mouth portion 421. In this modification, the outer cylinder portion 433 is a decagonal cylindrical shape extending along the central axis J. The outer cylinder portion 433 has a plurality of outer cylinder inner surfaces 434 and a second protrusion 435.

[0077] The plurality of outer cylinder inner surfaces 434 are the surfaces facing the radially inner side among the surfaces of the outer cylinder portion 433. Each outer cylinder inner surface 434 faces the mounting outer surface 425 in the radial direction. In this modification, the outer cylinder portion 433 has ten outer cylinder inner surfaces 434. In this modification, the plurality of outer cylinder inner surfaces 434 include five first outer cylinder inner surfaces 434a and five second outer cylinder inner surfaces 434b. Although not shown, each first outer cylinder inner surface 434a faces a different first mounting outer surface 425a in the radial direction. Although not shown, each second outer cylinder inner surface 434b faces a different second mounting outer surface 425b in the radial direction. A second protrusion 435 is provided on each first outer cylinder inner surface 434a.

[0078] The second protrusion 435 protrudes radially inward from the inner surface 434a of the first outer cylinder. In this modification, two second protrusions 435 are provided on each inner surface 434a of the first outer cylinder. The second protrusions 435 are arranged at intervals along the axial direction. The surface facing upward of each second protrusion 435 faces the first protrusion 426 in the axial direction. Other configurations and the like of the nozzle cap 430 of this modification are the same as those of the nozzle cap 30 of the above-described embodiment.

[0079] According to this modification, as in the above-described embodiment, when the nozzle cap 430 is rotated in the circumferential direction with respect to the mouth portion 421, the outer cylinder portion 433 is elastically deformed radially outward, and the attachment portion 424 is elastically deformed radially inward. Therefore, the nozzle rotation torque Tn can be made larger than the metering cap attachment / detachment torque Tm. Thus, when attaching / detaching the metering cap 40 to / from the nozzle cap 430, it is possible to prevent the nozzle cap 430 from rotating together with the metering cap 40. Also, the consumer can attach / detach the nozzle cap 430 to / from the container 420 by applying a rotation torque larger than the nozzle rotation torque Tn to the nozzle cap 430. As a result, the nozzle cap 430 can be attached / detached to / from the container 420 while preventing the nozzle cap 430 from rotating together with the metering cap 40.

[0080] <Fourth Modification> FIG. 15 is a top view showing the mouth portion 521 of this modification. FIG. 16 is a bottom view showing the nozzle cap 530 of this modification. In this modification, the housing 510 includes a container 520, a nozzle cap 530, and a metering cap 40 (see FIG. 1). In the following description, components having the same aspects as those of the above-described embodiment are denoted by the same reference numerals, and the description thereof is omitted.

[0081] As shown in FIG. 15, the container 520 has a housing portion 20a and a mouth portion 521. The mouth portion 521 is cylindrical about the central axis J. The mouth portion 521 has a mounting portion 524 and a tip cylinder portion 28. The mounting portion 524 is a polygonal cylinder extending along the central axis J. In this modification, the mounting portion 524 is a dodecagonal cylinder extending along the central axis J. The mounting portion 524 has a plurality of mounting outer surfaces 525, a first protrusion 526, and a plurality of corner portions 527.

[0082] The plurality of mounting outer surfaces 525 are the surfaces facing the radially outer side among the surfaces of the mounting portion 524. In this modification, the mounting portion 524 has 12 mounting outer surfaces 525. In this modification, the mounting portion 524 has 12 corner portions 527. In this modification, the plurality of mounting outer surfaces 525 include 6 first mounting outer surfaces 525a and 6 second mounting outer surfaces 525b. A first protrusion 526 is provided on each first mounting outer surface 525a.

[0083] The first protrusion 526 protrudes radially outward from the first mounting outer surface 525a. In this modification, two first protrusions 526 are provided on each first mounting outer surface 525a. Each first protrusion 526 is arranged at intervals along the axial direction. Other configurations of the container 520 in this modification are the same as those of the container 20 in the above-described embodiment.

[0084] As shown in FIG. 16, the nozzle cap 530 has an inner cylinder portion 31, a bottom wall portion 32, an outer cylinder portion 533, an outer mouth portion 37 (see FIG. 4), and a nozzle portion 38 (see FIG. 4). The outer cylinder portion 533 is cylindrical and extends in the axial direction. The outer cylinder portion 533 is arranged radially outside the mouth portion 521. In this modification, the outer cylinder portion 533 is a dodecagonal cylinder extending along the central axis J. The outer cylinder portion 533 has a plurality of outer cylinder inner surfaces 534 and a second protrusion 535.

[0085] The plurality of inner side surfaces 534 of the outer cylinder are the surfaces facing the inner side in the radial direction among the surfaces of the outer cylinder portion 533. Each inner side surface 534 of the outer cylinder faces the mounting outer surface 525 in the radial direction. In this modification, the outer cylinder portion 533 has 12 inner side surfaces 534 of the outer cylinder. In this modification, the plurality of inner side surfaces 534 of the outer cylinder include 6 first inner side surfaces 534a of the outer cylinder and 6 second inner side surfaces 534b of the outer cylinder. Although illustration is omitted, each first inner side surface 534a of the outer cylinder faces a different first mounting outer surface 525a in the radial direction. Although illustration is omitted, each second inner side surface 534b of the outer cylinder faces a different second mounting outer surface 525b in the radial direction. A second protruding portion 535 is provided on each first inner side surface 534a of the outer cylinder.

[0086] The second protruding portion 535 protrudes radially inward from the first inner side surface 534a of the outer cylinder. In this modification, two second protruding portions 535 are provided on each first inner side surface 534a of the outer cylinder. The second protruding portions 535 are arranged at intervals along the axial direction. The surface facing the upper side of each second protruding portion 535 faces the first protruding portion 526 in the axial direction. Other configurations and the like of the nozzle cap 530 in this modification are the same as those of the nozzle cap 30 in the above-described embodiment.

[0087] According to this modification, similar to the above-described embodiment, when the nozzle cap 530 is rotated in the circumferential direction with respect to the mouth portion 521, the outer cylinder portion 533 is elastically deformed radially outward, and the mounting portion 524 is elastically deformed radially inward. Therefore, the nozzle rotation torque Tn can be made larger than the weighing cap attachment / detachment torque Tm. Accordingly, when the weighing cap 40 is attached to and detached from the nozzle cap 530, it is possible to prevent the nozzle cap 530 from rotating together with the weighing cap 40. In addition, the consumer can attach and detach the nozzle cap 530 to and from the container 520 by applying a rotation torque larger than the nozzle rotation torque Tn to the nozzle cap 530. Thus, the nozzle cap 530 can be attached to and detached from the container 520 while preventing the nozzle cap 530 from rotating together with the weighing cap 40.

[0088] The preferred embodiments of the present invention have been described above. Needless to say, the present invention is not limited to such examples. When the nozzle cap is rotated in the circumferential direction with respect to the mouth portion, if the nozzle rotation torque can be increased by elastically deforming each of the outer cylinder portion and the mounting portion in the radial direction, those skilled in the art can obtain the above-described effects based on this index. In addition, the various shapes and combinations of the respective constituent members shown in the above-described examples are merely examples, and can be variously changed based on design requirements and the like without departing from the gist of the present invention.

Explanation of Signs

[0089] 20, 220, 320, 420, 520... containers, 21, 221, 321, 421, 521... mouth portions, 24, 224, 324, 424, 524... mounting portions, 25, 225, 325, 425, 525... outer mounting surfaces, 26, 226, 326, 426, 526... first protruding portions, 30, 230, 330, 430, 530... nozzle caps, 33, 233, 333, 433, 533... outer cylinder portions, 34, 234, 34, 434, 534... inner surfaces of the outer cylinder, 35, 235, 335, 435, 535... second protruding portions, J... central axis

Claims

1. A container having an opening on the upper side for accommodating contents, A nozzle cap detachably attached to the opening, comprising: The opening has a mounting portion that is a polygonal cylindrical shape extending along the central axis of the container, The mounting portion has four or more mounting outer surfaces facing the outer side in the radial direction centered on the central axis, The nozzle cap has an outer cylinder portion that is a polygonal cylindrical shape extending along the central axis, The outer cylinder portion is disposed on the outer side in the radial direction relative to the opening and has four or more outer cylinder inner surfaces facing the inner side in the radial direction, At least one of the mounting outer surfaces is provided with a first protrusion protruding outward in the radial direction from the mounting outer surface, At least one of the outer cylinder inner surfaces is provided with a second protrusion protruding inward in the radial direction from the outer cylinder inner surface, The surface facing the upper side of the second protrusion faces the first protrusion in the axial direction, which is the direction in which the central axis extends, a container.

2. The container according to claim 1, wherein each of the number of the mounting outer surfaces and the number of the outer cylinder inner surfaces is four or more and twelve or less.

3. The container according to claim 1, wherein the number of the mounting outer surfaces is the same as the number of the outer cylinder inner surfaces.

4. The container according to claim 1, wherein the first protrusion is provided on at least two or more of the mounting outer surfaces, and the second protrusion is provided on at least two or more of the outer cylinder inner surfaces.

5. Two or more and five or less of the first protrusions are provided on the mounting outer surface at intervals along the axial direction, Two or more and five or less of the second protrusions are provided on the outer cylinder inner surface at intervals along the axial direction, the container according to any one of claims 1 to 4.

Images