Refill container and replacement container

Abstract

The invention provides a refilling container and a replacement container which can be easily replaced by a simple structure and can be well held in an external container. A refill container (10) is provided with: a refill container main body (11) having a bottom surface section (11a) and a side surface section (11b) that divide an accommodation space (S) in which contents are accommodated; a flange section (12) protruding outward from the side surface section (11b); a vertical peripheral wall part (13) which is vertically arranged from the outer edge of the flange part (12); a refilling-side fitting section (14) protruding from the inner surface of the vertical peripheral wall section (13); and a plurality of cutout parts (15) which are provided in the vertical peripheral wall part (13) and which attach the refill container (10) to the outer container (20) by fitting the refill-side fitting part (14) and the outer container-side fitting part (23b), the side surface part (11b) being configured so as to form a gap (G) between the side surface part (11b) and the inner surface of the outer container (20), the gap (G) becoming larger from the top surface side toward the bottom surface part (11a). Further, a replacement container (100) comprising the refill container (10) and an outer container (20).

Description

Technical Field

[0001] The present invention relates to a refill container which is used interchangeably with an outer container and a replacement container comprising the refill container and the outer container. Background Art

[0002] As a container for storing creamy or gel-like contents (cosmetics, etc.), there is known a refill container including a refill container for storing the contents as an inner container and an outer container for detachably holding the refill container (see, for example, Patent Document 1).

[0003] In such a replacement container, the outer container can be repeatedly used by replacing the refill container after the content is used up. Since only the refill container is discarded after use, the amount of plastic used can be reduced compared to the case where the entire container is discarded, which is excellent in terms of resource saving, etc.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Application Publication No. 2016-210433 Summary of the invention

[0007] Problems to be solved by the invention

[0008] For such a replacement container, it is required that the refill container can be easily removed from the outer container and easily installed when replacing, and on the other hand, it is required to be held in the outer container in a manner that does not easily fall off from the outer container during use. Furthermore, from the perspective of resource saving, the inner container is required to have an extremely simple structure.

[0009] Therefore, an object of the present invention is to provide a refill container and a replacement container which are easily replaceable with a simple structure and can be well held in an external container.

[0010] Technical means of solving problems

[0011] In order to solve the above-mentioned problem, the refill container of the present invention has a storage space for storing contents and is used interchangeably with an external container. The refill container is characterized in that it includes: a refill container body having a bottom surface and a side surface for dividing the storage space and an open top surface; a flange portion protruding outward from the side surface; a vertical peripheral wall portion, which is arranged to be vertically provided from the outer edge of the flange portion and surround the side surface of the refill container body; a refill side fitting portion, which protrudes from the inner surface of the vertical peripheral wall portion toward the refill container body; and a plurality of cutouts. The refill container body is inserted into the external container, and the refill side fitting portion is fitted with an external container side fitting portion provided on the external container, thereby installing the refill container on the external container, and the side surface portion is configured to form a gap between the side surface portion and the inner surface of the external container that increases as it goes from the top surface side toward the bottom surface portion when the refill container is installed on the external container.

[0012] In the refill container of the present invention, preferably, the number of the cutout portions provided on the vertical peripheral wall portion is two or more and twelve or less.

[0013] In the refill container of the present invention, it is preferable that the side surface portion is an inclined wall inclined so that the bottom surface portion side is closer to the central axis of the refill container body than the top surface portion.

[0014] In order to solve the above-mentioned problems, the replacement container of the present invention is characterized by comprising the above-mentioned refill container and the above-mentioned outer container to which the above-mentioned refill container is replaceably mounted.

[0015] Effects of the Invention

[0016] According to the present invention, the refilling side fitting part is fitted into the outer container side fitting part provided on the outer surface of the outer container, thereby the refilling container can be installed on the outer container. The refilling side fitting part is provided on the inner surface of the vertical peripheral wall part vertically provided from the flange part protruding outward from the side part of the refilling container body. A plurality of cutout parts are provided on the vertical peripheral wall part, and the refilling side fitting part is also cut out through the cutout parts. In addition, when the refilling container is installed on the outer container, a gap is formed between the outer side surface of the refilling container body and the inner side surface of the refilling receiving part, which becomes larger as it moves from the top toward the bottom surface of the refilling receiving part. Therefore, when a finger or the like is inserted into the receiving space of the refilling container body after use and the inner side surface of the refilling container body is pressed toward the outer container side, for example, on the bottom side, the flange part on the opposite side of the pressing part across the central axis of the refilling container body can be used as a fulcrum and the flange part on the pressing part side can be used as an action point to apply force in the direction of lifting the flange part. The cutout prevents the force acting on the action point side from being transmitted to the fulcrum side, and the flange on the action point side is allowed to move upward by increasing the cutout width. Therefore, the flange on the action point side can be lifted efficiently, thereby releasing the engagement between the refill side engagement portion and the outer container side engagement portion. Thus, the present invention provides a refill container and a replacement container that are easily replaceable with a simple structure and can be well held in an outer container. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] [ Figure 1 ] is a side sectional view of a replacement container according to an embodiment of the present invention. Figure 2B AA profile.

[0018] [ Figure 2A ] is to indicate Figure 1 A side view of a refill container installed in a replacement container is shown.

[0019] [ Figure 2B ] is to indicate Figure 1 A bottom view of a refill container installed in a refill container is shown.

[0020] [ Figure 3A ] means in Figure 1 The side sectional view showing the replacement container in a state where the lower cover is removed is used to explain the process of removing the refill container.

[0021] [ Figure 3B ] is an enlarged representation Figure 3A Part of the diagram.

[0022] [ Figure 4A ] means in Figure 1 The side sectional view of the replacement container with the cover removed is for use with Figure 3AA diagram illustrating the process of disassembling a refill container.

[0023] [ Figure 4B ] is an enlarged representation Figure 4A Part of the diagram.

[0024] [ Figure 4C ] is an enlarged representation Figure 4A Part of the diagram. DETAILED DESCRIPTION

[0025] Hereinafter, one embodiment of the refill container and the replacement container of the present invention will be described with reference to the drawings. Figure 1 is a side sectional view of the replacement container of this embodiment. Figure 1 As shown, the replacement container 100 includes a refill container 10, an outer container 20 (external container) and a cover 30, and the refill container 10 is housed in the outer container 20 so as to be replaceable. Hereinafter, the direction along the central axis O of the refill container 10 is referred to as the axial direction, and the top surface side of the refill container 10 in the axial direction is referred to as the upper side, and the bottom surface 11a side is referred to as the lower side. In addition, the radial direction is a direction orthogonal to the central axis O in a plane perpendicular to the central axis O, and the so-called circumferential direction refers to a direction circumferentially centered on the central axis O in the plane.

[0026] First, refer to Figure 1 and Figure 2A , Figure 2B The refill container 10 will be described. Figure 2A is a side view showing a refill container 10, Figure 2B The refill container 10 is substantially cylindrical and has a bottom portion 11a and a side portion 11b, which define a storage space S for storing the contents. The top surface of the refill container body 11, that is, the top surface of the storage space S is open.

[0027] The refill container 10 can be obtained by molding a synthetic resin into a predetermined shape, for example. As the resin constituting the refill container 10, for example, polyethylene terephthalate resin (PET), polyethylene resin (PE) (LDPE, HDPE), LLDPE), polypropylene resin (PP) (homopolymer, random copolymer, block copolymer), polyamide resin (PA), ethylene-vinyl alcohol resin (EVOH), etc. are preferably used. The refill container 10 may be a single-layer structure including these resins, or a laminated structure in which these resins are appropriately laminated. In addition, from the viewpoint of reducing environmental load, it is also preferable to use a biodegradable resin or a recycled resin containing the above-mentioned resin components.

[0028] In the present invention, the content contained in the storage space S of the refill container body 11 is not particularly limited, and for example, creamy or gel-like cosmetics can be appropriately contained. In addition to creamy or gel-like substances, the content may be a solid substance without fluidity. In addition to cosmetics, the content may contain various contents such as medicaments such as plasters, adhesives such as pastes, coatings such as paints, and foods such as seasonings.

[0029] The bottom portion 11a is Figure 2B The bottom surface shown in FIG. 1 is generally circular. Figure 1 and Figure 2A As shown in the figure, the bottom portion 11a is formed into a spherical or disc shape that is convex downward in the central axis direction. The side portion 11b is connected to the bottom portion 11a. In the present embodiment, the side portion 11b is configured as an inclined wall (inclined surface) that is gently inclined so that the bottom portion 11a side is closer to the central axis O than the top surface side as a peripheral wall surrounding the bottom portion 11a. That is, the bottom portion 11a of the refill container body 11 has a smaller diameter than the top surface, and gradually expands in diameter from the bottom portion 11a toward the top surface.

[0030] In addition, if Figure 1 and Figure 2A , Figure 2BAs shown in FIG. 1 , the refill container 10 includes: a flange portion 12 provided at the top end of the refill container body 11; a vertical wall portion 13 vertically provided from the flange portion 12; a refill side fitting portion 14 provided at the lower end side of the inner surface of the vertical wall portion 13; and a cutout portion 15 formed by cutting out the vertical wall portion 13 with a predetermined cutout width. By forming the cross-sectional shape of the top surface side of the refill container body 11 into a U-shaped shape with an opening at the bottom by using the side portion 11b, the flange portion 12 and the vertical wall portion 13, it is easy to maintain the strength of the top surface side even when the wall thickness of the side portion 11b is made thin and the amount of resin is reduced. In addition, the U-shaped cross-sectional portion formed by the side portion 11b, the flange portion 12 and the vertical wall portion 13 functions as an insertion portion 16 into which the front end portion of the mouth portion 23 of the outer container 20 is inserted. The structure of each portion will be described in more detail below.

[0031] In the present embodiment, the flange portion 12 is provided so as to protrude radially outward from the top end of the refill container body 11 and surround the opening surface along the outer edge of the opening surface of the refill container body 11. The flange portion 12 is in the shape of an annular plate having a predetermined width in the radial direction and a thin thickness in the axial direction. An annular convex rib 12a protruding upward is provided on the upper surface of the flange portion 12 (see Figure 2A to Figure 4C ). The annular rib 12a is provided at substantially the center in the width direction of the flange portion 12. The annular rib 12a can be used as a contact ring for sealing of the seal member.

[0032] The vertical peripheral wall portion 13 is provided vertically from the outer edge of the flange portion 12 and surrounds the outer surface of the side portion 11b of the refill container body 11. The refill side fitting portion 14 is configured as an annular convex rib (undercut) protruding from the inner surface of the vertical peripheral wall portion 13 toward the refill container body 11 and extending in the circumferential direction (see Figure 3B and Figure 4B , Figure 4C (partial enlarged view).

[0033] like Figure 2A , Figure 2B As shown, the cutout portion 15 refers to a portion of the vertical peripheral wall portion 13 cut out with a predetermined cutout width W (see Figure 2B ) A predetermined cut length L1 is cut from the lower end of the vertical peripheral wall portion 13 toward the top end in the axial direction (refer to Figure 2A That is, Figure 2A As shown, the cutout 15 is formed as a substantially rectangular slit provided in the vertical peripheral wall 13 and extending in the axial direction. However, the cutout width W refers to the width of the cutout 15 in the circumferential direction. In addition, the cutout length L1 refers to the length of the cutout 15 in the axial direction. When the length of the vertical peripheral wall 13 in the axial direction (the length from the lower end to the top end of the vertical peripheral wall 13) is L2, the cutout length L1 is preferably , preferably , more preferably That is, it is preferred that the cutout portion 15 has a length (cutout length) that does not reach the top end of the vertical wall portion 13 in the axial direction, and a remaining portion 17 of the vertical wall portion 13 is cut away between the outer edge of the flange portion 12 and the cutout portion 15 .

[0034] However, the cutout portion 15 is formed by also cutting out the refill side fitting portion 14 provided on the lower end side of the inner surface of the vertical peripheral wall portion 13. In this embodiment, a plurality of cutout portions 15 are provided on the vertical peripheral wall portion 13. Therefore, the refill side fitting portion 14 is provided intermittently over substantially the entire circumference in the circumferential direction.

[0035] exist Figure 2B , an example is shown in which three cutouts 15 are provided at equal intervals (120°) in the vertical peripheral wall portion 13. However, in the present invention, the number of the cutouts 15 is not limited to the example shown in the figure. For example, the number of the cutouts 15 provided in the vertical peripheral wall portion 13 can be set to be more than two and less than twelve. It is particularly preferred to be more than three and less than ten, and it is also preferred to be more than four and less than eight.

[0036] Next, refer to Figure 1 The outer container 20 is described. The outer container 20 has an outer container side surface portion 21 and an outer container side bottom surface portion 22, and accommodates the refill container body 11 inside the space divided by the outer container side surface portion 21 and the top surface side opening. In addition, a mouth portion 23 is provided on the top surface side of the outer container side side surface portion 21, and the outer peripheral surface of the mouth portion 23 is provided with: a threaded portion 23a for detachably installing the cover body 30; and an outer container side fitting portion 23b for replaceably installing the refill container 10.

[0037] like Figure 1 As shown, the outer container side side portion 21 and the outer container side bottom portion 22 are respectively configured to be thicker than the side portion 11b and the bottom portion 11a of the refill container body 11. The outer container 20 can be made of, for example, resin, glass, metal, etc. In the case of resin, in addition to the resins listed above, it can also be made of acrylic resin, etc. The outer container 20 is a container that is repeatedly used by replacing the refill container 10. By configuring the outer container 20 to be thicker than the refill container body 11, even if the durability of the refill container body 11 is insufficient when used alone, sufficient strength can be achieved by installing it on the outer container 20. Therefore, the refill container body 11 can be configured to be thin-walled, thereby reducing the amount of plastic used.

[0038] The outer surface of the outer container side surface portion 21 gradually expands from the outer container side bottom surface portion 22 toward the lower end of the mouth portion 23. The inner surface of the outer container side surface portion 21 slightly expands from the bottom surface side toward the top surface side. The gradient of the outer container side surface portion 21 is extremely small and is set to be smaller than the gradient of the side surface portion 11b of the refill container body 11. Therefore, when the refill container body 11 is accommodated in the outer container 20, a gap G is formed between the side surface portion 11b of the refill container body 11 and the inner surface of the outer container 20, which increases from the top surface side toward the bottom surface portion 11a. In addition, the gradient of the outer container side surface portion 21 mentioned here refers to the angle formed by the central axis O and the outer container side surface portion 21.

[0039] The threaded portion 23a and the outer container side fitting portion 23b are provided on the outer peripheral surface of the mouth portion 23. Figure 1 As shown, on the outer peripheral surface of the mouth 23, a step portion 23c recessed radially inward is provided above the threaded portion 23a. The outer container side fitting portion 23b is provided on the outer peripheral surface of the mouth 23 and is above the step portion 23c. Hereinafter, the portion of the mouth 23 that is above the step portion 23c is referred to as the front end portion 23d. The front end portion 23d of the mouth 23 is formed to be thinner than the portion below the step portion 23c. The outer container side fitting portion 23b is configured as an annular convex rib (undercut) protruding radially outward from the outer surface of the front end portion 23d.

[0040] The cover body 30 includes an inner cover portion 31 and an outer cover portion 32 .

[0041] The inner cover portion 31 is in the shape of a top cylinder and includes an inner cover top wall portion 31a and an inner cover peripheral wall portion 31b. In the present embodiment, the inner cover top wall portion 31a is in the shape of a roughly circular plate. The inner cover top wall portion 31a covers the top surface of the refill container body 11 when the refill container 10 is installed in the outer container 20. The inner cover peripheral wall portion 31b is arranged to be vertically arranged from the outer edge of the inner cover top wall portion 31a and surround the outer edge of the inner cover top wall portion 31a. A threaded portion 31c is arranged on the inner surface of the inner cover peripheral wall portion 31b. The threaded portion 31c is screwed with the threaded portion 23a on the side of the mouth 23 of the outer container 20, and the cover body 30 is detachably mounted on the mouth 23 of the outer container 20. The inner cover peripheral wall portion 31b has an inner cover side engaging portion 31d protruding radially outward at its lower end for engaging the outer cover portion 32 with the inner cover portion 31. In addition, a seal 33 having a planar shape substantially the same as the inner surface shape of the inner cover top wall portion 31a is provided on the inner surface side of the inner cover top wall portion 31a. The seal 33 abuts against the upper surface of the annular convex rib 12a provided on the flange portion 12 of the refill container body 11.

[0042] The outer cover portion 32 is in the shape of a top cylinder which is one circle larger than the inner cover portion 31, and includes an outer cover top wall portion 32a and an outer cover peripheral wall portion 32b. In the present embodiment, the outer cover top wall portion 32a is roughly disc-shaped like the inner cover top wall portion 31a. In addition, like the inner cover peripheral wall portion 31b, the outer cover peripheral wall portion 32b is arranged to be vertically arranged from the outer edge of the outer cover top wall portion 32a and surround the outer edge of the outer cover top wall portion 32a. An outer cover side engaging portion 32c which is configured as a recessed portion recessed in the radial direction is provided on the inner surface of the outer cover peripheral wall portion 32b. The outer cover side engaging portion 32c is engaged with the inner cover side engaging portion 31d, so that the inner cover portion 31 and the outer cover portion 32 are integrated, thereby forming the cover body 30.

[0043] The inner cover 31 and the outer cover 32 may be made of the same material as the outer container 20. In addition, the inner cover 31 and the outer cover 32 may be made of the same material or different materials. For example, it is also preferable that the outer cover 32 is designed in various ways depending on the type of product or whenever a predetermined product is updated, and the inner cover 31 is a common member independent of the product.

[0044] The flow for removing the refill container 10 from the outer container 20 in the replacement container 100 configured as described above will be described. When the refill container 10 is removed from the outer container 20, the content is used up and there is substantially no content in the storage space S of the refill container body 11, and the refill container 10 is in an empty state.

[0045] First, from Figure 1 In the state shown in FIG. 1 , the cover body 30 is rotated in the reverse thread direction to remove the cover body 30 and become Figure 3A At this time, if Figure 3B As shown in the partially enlarged view, the front end portion 23d of the mouth 23 is inserted into the insertion portion 16 with a U-shaped cross-section formed by the side portion 11b, the flange portion 12 and the vertical wall portion 13 of the refill container body 11, and the lower surface of the flange portion 12 abuts against the top surface of the front end portion 23d of the mouth 23, and the convex portion of the refill side fitting portion 14 is arranged below the convex portion of the outer container side fitting portion 23b, and the two are in a fitting state.

[0046] Then, insert a finger or the like into the inner side of the empty refill container body 11, for example, Figure 3AThe side portion 11b is pressed against the outer container side portion 21, such as the position indicated by the hollow arrow in the middle. The position where the side portion 11b is pressed is arbitrary, but when the position close to the bottom portion 11a is pressed, the refill container 10 can be easily removed from the outer container 20 with less force. Therefore, a display as a mark for indicating the pressing position, etc., may be provided on the inner side of the refill container body 11. The display as a mark for indicating the pressing portion may also be various marks such as a circular mark, a star mark, an arrow, or a text such as "Press here", or a combination of these marks and text.

[0047] When the side portion 11b is pressed toward the outer container side side portion 21 at the pressing position, the side portion 11b moves toward the outer container side side side portion 21 by an amount corresponding to the gap G (Gw) at the pressing position. At this time, the pressing position becomes a force point, and the flange portion 12 of the refill container body 11 and the front end portion 23d of the mouth portion 23 of the outer container 20 on the opposite side of the pressing position across the central axis O in the refill container body 11 are in contact with each other (see Figure 4A The hollow arrow) becomes a fulcrum, and the refill container body 11 is tilted (rotated) at a predetermined angle corresponding to the movement amount (Gw) in the outer container 20. At this time, the contact portion between the flange portion 12 on the opposite side of the fulcrum across the central axis O and the front end portion 23d of the mouth portion 23 of the outer container 20 becomes an action point, and the force that lifts the flange portion 12 upward acts at the action point. Here, a plurality of the cutout portions 15 are provided on the vertical peripheral wall portion 13, and the force acting on the action point is divided by the cutout portion 15 and cannot be transmitted to the fulcrum side. Therefore, when the side portion 11b is pressed at the pressing position, first, the cutout width of the cutout portion 15 is expanded, and the flange portion 12 moves upward. When the flange portion 12 is lifted upward, the vertical peripheral wall portion 13 also moves upward, and the convex portion of the refill side fitting portion 14 passes over the convex portion of the outer container side fitting portion 23b, thereby releasing the fitting state of the two.

[0048] like Figure 2BAs shown, in the refill container 10 of the present embodiment, three cutouts 15 are provided, and the vertical wall portion 13 (and the refill side fitting portion 14) is divided into three by the cutouts 15. For convenience, the divided areas are referred to as the first vertical wall portion 13a, the second vertical wall portion 13b, and the third vertical wall portion 13c. The area on the side where the action point exists among the three areas is set as the first vertical wall portion 13a. When the fitting state between the refill side fitting portion 14 and the outer container side fitting portion 23b is released in the first vertical wall portion 13a, the fitting state between the refill side fitting portion 14 and the outer container side fitting portion 23b is also loosened in the remaining two areas, so that the fitting state of the two can be easily released. Alternatively, when the engaging state between the refilling side engaging portion 14 and the outer container side engaging portion 23b is released in the first vertical wall portion 13a while the engaging state is maintained in other areas, the engaging state between the refilling side engaging portion 14 and the outer container side engaging portion 23b on the action point side can be released by appropriately selecting a portion to serve as the action point and repeating the same process as described above.

[0049] As described above, the refill container 10 of the present embodiment can be easily removed from the outer container 20 with a small force by using the lever principle by providing the cutout portion 15 in the vertical peripheral wall portion 13, intermittently fitting the refill side fitting portion 14 in the outer container side fitting portion 23b, and providing a gap G that increases from the top surface side toward the bottom surface portion 11a between the side surface portion 11b of the refill container body 11 and the inner surface of the outer container 20 when the refill container body 11 is accommodated in the outer container 20. In addition, in the refill container 10 of the present embodiment, the flange portion 12 is provided so as to surround the opening surface along the outer edge of the top end of the refill container body 11, and the vertical peripheral wall portion 13 and the refill side fitting portion 14 are provided so as to surround the side surface portion 11b of the refill container body 11 over substantially the entire circumference, although intermittently provided by the cutout portion 15. By inserting the front end portion 23 d of the mouth portion 23 of the outer container 20 into the insertion portion 16 formed of these, the refill container body 11 can be well held in the outer container 20 .

[0050] In addition, in the embodiment, the cutout portion 15 is provided on the side of the refill container 10, and the side portion 11b is provided as a circumferential wall surrounding the bottom portion 11a, and is gently inclined in such a manner that the bottom portion 11a side is closer to the central axis O than the top surface side. Thus, without changing the structure of the outer container 20 that has been circulated in the market, a gap G that increases from the top surface side toward the bottom portion 11a can be provided between the side portion 21 of the outer container, thereby achieving the above-mentioned effect.

[0051] The replacement container 100 and the refill container 10 of the present embodiment described above are one form of the present invention, and the present invention is not limited to the above embodiment, and can be appropriately changed within the scope of the main purpose of the present invention. For example, in the above embodiment, the side portion 11b of the refill container 10 is set as the above inclined surface, but the side portion 11b can also be set as an inclined wall that is inclined in a manner that the bottom surface 22 side of the outer container side is closer to the central axis O than the mouth 23 side. In this case, a gap G that becomes larger as it moves from the top surface side toward the bottom surface 11a is formed between the side portion 11b of the refill container 10 and the side portion 21 of the outer container, thereby obtaining the above effect. In addition, the side portion 21 of the outer container also has a slight inclination, but as long as the gap G is formed, there is no particular limitation on whether the side portion 21 of the outer container is set as an inclined surface, the direction of the inclination, etc.

[0052] The gap G may be of such a size that the convex portion of the refill-side fitting portion can go over the convex portion of the outer container-side fitting portion 23b when the side surface portion 11b is pressed as described above.

[0053] In addition, in the above embodiment, the flange 12 is provided at the top of the side portion 11b of the refill container body 11, but the flange 12 is not limited to the top of the side portion 11b, and may be provided below the top of the side portion 11b to protrude radially outward from the outer surface. In the above embodiment, the threaded portion 23a is provided at the mouth 23 of the outer container 20 and the cover 30 is detachably mounted on the outer container 20, but, for example, the flange 12 may be provided at a lower position of the side portion 11b than the top, and the threaded portion may be provided on the outer peripheral surface of the side portion 11b, so that the cover 30 is detachably mounted on the refill container 10. However, by providing the flange 12 at the top of the side portion 11b of the refill container body 11, it is easier to reduce the amount of plastic used.

[0054] Furthermore, in the above-described embodiment, the bottom portion 11a of the refill container body 11 is formed into a disk or spherical shape that is convex axially downward. By forming the bottom portion 11a into such a shape, the refill container 10 cannot be directly placed on a placing surface such as a table in a stable state with the opening surface facing axially upward. Therefore, the refill container 10 can be mounted on the outer container 20 for use. However, the bottom portion 11a of the refill container body 11 may be formed into a flat surface, and the shape of the bottom portion 11a is not particularly limited. In addition, the refill container 10 is assumed to be mainly made of plastic, but it may also be made of paper material or the like that has been subjected to a water-resistant coating or an oil-resistant coating.

[0055] Explanation of symbols

[0056] 10: Refill container

[0057] 11: Refill container body

[0058] 11a: Bottom

[0059] 11b: Side face

[0060] 12: Flange

[0061] 12a: Annular rib

[0062] 13: Vertical wall

[0063] 13a: First vertical wall portion

[0064] 13b: Second vertical peripheral wall portion

[0065] 13c: The third vertical wall

[0066] 14: Refilling side fitting part

[0067] 15: Incision

[0068] 16: Insertion

[0069] 17: The rest

[0070] 20: External container (external container)

[0071] 21: Side of outer container

[0072] 22: Side bottom of outer container

[0073] 23: Mouth

[0074] 23a: Threaded part

[0075] 23b: Outer container side fitting portion (outer container side fitting portion)

[0076] 23c: Steps

[0077] 23d: Front end

[0078] 30: Cover

[0079] 31: Inner cover

[0080] 31a: Inner cover top wall

[0081] 31b: Inner cover peripheral wall

[0082] 31c: Threaded part

[0083] 31d: Inner cover side snap-fitting part

[0084] 32: External cover

[0085] 32a: External cover top wall

[0086] 32b: External cover peripheral wall

[0087] 32c: External cover side engagement portion

[0088] 33: Seals

[0089] 100: Replace container

[0090] G: Gap

[0091] O: Center axis

[0092] S: Containment Space

Claims

1. A refill container having a storage space for storing contents and being used interchangeably with respect to an external container, the refill container comprising: A refill container body having a bottom surface and side surfaces for dividing the receiving space and an open top surface; A flange portion protruding outward from the side portion; A vertical peripheral wall portion, arranged to be vertically provided from the outer edge of the flange portion and to surround the side portion of the refill container body; a refill side fitting portion, projecting from the inner surface of the vertical peripheral wall portion toward the refill container body side; as well as A plurality of cutout portions are formed by cutting out a portion of the vertical peripheral wall portion where the refilling side fitting portion is provided with a predetermined cutout width. When the refill container body is inserted into the external container, the refill side fitting portion fits with the external container side fitting portion provided on the external container, thereby attaching the refill container to the external container. The side surface portion is configured so that, when the refill container is attached to the external container, a gap is formed between the side surface portion and an inner surface of the external container, the gap increasing from the top surface side toward the bottom surface side.

2. The refill container according to claim 1, wherein: The number of the cutouts provided on the vertical peripheral wall portion is not less than two and not more than twelve.

3. The refill container according to claim 1, wherein: The side surface portion is an inclined wall that is inclined so that the bottom surface portion side is closer to the central axis of the refill container body than the top surface side.

4. A replacement container, comprising the refill container according to any one of claims 1 to 3 and the outer container to which the refill container is replaceably mounted.

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