Double container

Abstract

To provide a double container in which an inner container for storing contents can be fixed to and stored in an outer container, and the inner container can be easily replaced.SOLUTION: A double container 1 includes a cylindrical outer container 10, an inner container 20 housed in the outer container 10, and a connecting member 30 connecting the outer container 10 and the inner container 20, wherein the inner container 20 includes a first engaging portion 21 engaging with the connecting member 30 at a lower end portion of the inner container 20, and the connecting member 30 includes a fitting wall portion 32 fitting into a lower end portion of the outer container 10 and a second engaging portion 31 engaging with the first engaging portion 21.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a double container comprising an inner container and an outer container that houses the inner container therein. [Background technology]

[0002] Conventionally, in order to obtain a beautiful appearance, double containers have been widely used for cosmetic containers, in which an inner container containing cosmetics is placed inside a decorated outer container. Furthermore, when manufacturing such a double container, it is required that the inner container can be smoothly assembled into the outer container, and once assembled, the outer container and inner container are firmly connected so that the inner container does not fall off the outer container.

[0003] Meanwhile, in recent years, there has been a trend toward the adoption of double-layered containers as a response to environmental issues such as the mass disposal of plastics, etc. In double-layered containers, the inner container can be replaced with a new one filled with the contents after the cosmetic has been used up, allowing the outer container to be reused.

[0004] When the inner container of a double container is used as a refill container in this way, it is desirable that the user be able to easily remove the empty inner container from the outer container and replace it with a new inner container. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-028399 Summary of the Invention [Problem to be solved by the invention]

[0006] In view of the above, there is a demand for a double container that allows the inner container to be smoothly and reliably assembled into the outer container during manufacturing, and that allows the user to easily remove the empty inner container from the outer container and replace it with a new inner container after using up the cosmetic.

[0007] An object of the present invention is to provide a double container in which an inner container for accommodating contents can be fixed to an outer container and further in which the inner container can be easily replaced. [Means for solving the problem]

[0008] The inventor discovered that by providing a first engagement portion on the inner container and a fitting wall portion and a second engagement portion on the connecting member, when the connecting member is attached to the outer container, the fitting wall portion fits into the lower end of the outer container and the first engagement portion and second engagement portion engage, allowing the inner container to be accommodated and fixed within the outer container, and that by adjusting the shape, structure, arrangement, etc. of these, the inner container can be easily removed from the outer container, thereby completing the present invention.

[0009] Specific means for solving the above problems include the following embodiments.

[0010] <1> A cylindrical outer container; an inner container accommodated in the outer container; A double container provided with a connecting member that connects the outer container and the inner container, the inner container has a first engaging portion at a lower end thereof that engages with the connecting member; The connecting member is a double container having an insertion wall portion that fits into the lower end of the outer container, and a second engagement portion that engages with the first engagement portion.

[0011] <2> The fitting wall portion is rotatably fitted into the lower end portion of the outer container. <1> The double container described in .

[0012] <3> the inner container has the first engagement portion formed by forming a recess on a side surface at a lower end thereof, The connecting member includes the second engaging portion formed by an engaging protrusion on the inner surface of the fitting wall portion. <1> or <2> The double container described in .

[0013] <4> The outer container has a rectangular cylindrical lower end, the inner container is provided with the first engaging portion, which is formed by a flat portion formed on a side surface at the lower end thereof, and which has a horizontal groove portion extending laterally and a vertical groove portion extending vertically from the end of the horizontal groove portion toward the lower end thereof; the connecting member comprises a bottom member and a slide member that slides left and right on the bottom member, the bottom member includes a rectangular bottom plate portion having a through hole, the fitting wall portion erected on the periphery of the bottom plate portion, and a bottom member engagement groove extending laterally on the inner surface of the fitting wall portion, The slide member has a rectangular slide bottom plate portion and a slide side wall portion erected on a side edge of the slide bottom plate portion extending in a slide direction, The second engaging portion is formed by forming an engaging protrusion on the inner surface of the slide side wall portion that is movable along the horizontal groove portion and the vertical groove portion, an outer engaging protrusion on the outer surface of the slide side wall portion that engages with the bottom member engaging groove so as to be movable along the bottom member engaging groove, and a finger hook portion on the slide bottom plate portion that can be hooked with a finger through the through hole. <1> The double container described in .

[0014] <5> The outer container has a rectangular cylindrical lower end, the inner container has the first engagement portion formed by a horizontal groove extending laterally in a flat portion formed on a side surface at a lower end thereof, The connecting member comprises a frame member and a slide member that slides left and right, the frame member has a rectangular cylindrical shape with the fitting wall portion as a side surface, and includes a locking portion extending laterally by a predetermined length on the inner surface of the fitting wall portion; the sliding member has a rectangular sliding bottom plate portion that closes the lower end opening of the outer container, and a sliding side wall portion that stands on a part of a side edge of the sliding bottom plate portion that extends in a sliding direction, The second engaging portion is formed by forming an inner engaging protrusion on the inner surface of the slide side wall portion that is movable along the horizontal groove portion, and an outer engaging protrusion on the outer surface of the slide side wall portion that engages with the locking portion, <1> The double container described in .

[0015] <6> the inner container has the first engaging portion formed at its lower end with a male screw portion that screws forward or backward along the axis of the outer container, the connecting member includes a bottom plate portion, the fitting wall portion erected on the periphery of the bottom plate portion, and the second engaging portion formed by forming a female screw portion on the upper surface of the bottom plate portion, The first engaging portion and the second engaging portion have a magnet on one side and a magnet or a magnetic body on the other side, and are biased in a direction in which they approach each other. <1> The double container described in . [Effects of the Invention]

[0016] According to the present invention, it is possible to provide a double container in which an inner container for accommodating contents can be accommodated and fixed in an outer container, and further the inner container can be easily removed from the outer container. [Brief explanation of the drawings]

[0017] [Figure 1] FIG. 1 is a perspective view of the appearance of a double container 1 of the present invention. [Figure 2] 1 is an external side view of a double container 1 of the present invention. [Figure 3] 2 is a partial cross-sectional view of the double container 1 of the first embodiment of the present invention taken along the line AA shown in FIG. [Figure 4] FIG. 1 is an exploded view of a double container 1 according to a first embodiment of the present invention. [Figure 5] 2 is a partial cross-sectional view of a double container 1 according to a second embodiment of the present invention taken along line AA shown in FIG. [Figure 6] FIG. 2 is an exploded view of a double container 1 according to a second embodiment of the present invention. [Figure 7] FIG. 4 is an explanatory view illustrating the structure of a double container 1 according to a second embodiment of the present invention. [Figure 8]FIG. 10 is an external view showing a sliding member 40 of a double container 1 according to a second embodiment of the present invention. [Figure 9] FIG. 10 is an external view showing the bottom surface of a double container 1 according to a second embodiment of the present invention. [Figure 10] FIG. 10 is an external view showing another example of the first engaging portion of the double container 1 according to the second embodiment of the present invention. [Figure 11] 2 is a partial cross-sectional view of a double container 1 according to a third embodiment of the present invention taken along line AA shown in FIG. [Figure 12] FIG. 10 is an exploded view of a double container 1 according to a third embodiment of the present invention. [Figure 13] 13 is a cross-sectional view of the frame member 70 taken along the line BB shown in FIG. [Figure 14A] FIG. 10 is an explanatory view illustrating the structure of a double container 1 according to a third embodiment of the present invention. [Figure 14B] FIG. 10 is an explanatory view illustrating the structure of a double container 1 according to a third embodiment of the present invention. [Figure 15] 2 is a partial cross-sectional view of a double container 1 according to a fourth embodiment of the present invention taken along line AA shown in FIG. [Figure 16] FIG. 10 is an exploded view of a double container 1 according to a fourth embodiment of the present invention. [Figure 17] FIG. 10 is an explanatory view illustrating the structure of a double container 1 according to a fourth embodiment of the present invention. [Figure 18] FIG. 10 is an explanatory view illustrating the structure of a double container 1 according to a fourth embodiment of the present invention. [Figure 19] FIG. 2 is an external view showing the shape of the base 110. [Figure 20] 20 is a cross-sectional view of the base 110 taken along the line XX-XX shown in FIG. 19. DETAILED DESCRIPTION OF THE INVENTION

[0018] Hereinafter, embodiments of the double container of the present invention will be described, but the present invention is not limited thereto. Furthermore, the drawings may be drawn in a simplified schematic form to explain the contents of the invention, and the dimensional ratios of the depicted components or between the components may not match the dimensional ratios of those components described in the specification. Furthermore, components described in the specification may be omitted in the drawings, or the number of components may be omitted.

[0019] (First embodiment) A double container according to a first embodiment of the present invention will be described with reference to Figures 1 to 4. Figures 1 and 2 show a double container 1 to which a dispenser 100 equipped with a pump mechanism is attached as a dispensing device, but the present invention is not limited to the dispenser 100, and a dispensing device equipped with another dispensing mechanism can be attached instead of the dispenser. Also, instead of a dispensing device equipped with a dispensing mechanism, a cap can be attached and opened to pour out the contents. The terms "upper" and "lower" used below refer to the upper and lower sides of the double container 1 when it is placed at rest as shown in FIGS.

[0020] Fig. 3 is a partial cross-sectional view of this embodiment taken along line AA shown in Fig. 1. Fig. 4 is an exploded view of this embodiment. As shown in FIGS. 3 and 4, the double container 1 comprises an outer container 10, an inner container 20, and a connecting member 30.

[0021] The outer container 10 is cylindrical. In this embodiment, a rectangular cylindrical outer container 10 is shown in Figures 1 and 2, but the outer container 10 is not limited to this and may also be cylindrical or have a polygonal cylindrical shape other than a rectangular shape.

[0022] The inner container 20 housed in the outer container 10 is a cylindrical container with a bottom and a pouring outlet at the top. In this embodiment, Fig. 4 shows an inner container 20 in the shape of a rectangular cylinder with a bottom, but the inner container 20 is not limited to this and can also be cylindrical or in the shape of a polygonal cylinder other than a square.

[0023] The content contained in the inner container 20 is not particularly limited and may be a liquid, powder, or granules, but when the dispenser 100 shown in this embodiment is used, the content is a liquid.

[0024] The inner container 20 has a first engagement portion 21 at its lower end. There are no particular limitations on the position of the first engagement portion 21 as long as it is at the lower end of the inner container 20, and there are no particular limitations on its shape either. However, it is preferable that the first engagement portion 21 be a recess 21a formed on the side surface of the lower end of the inner container 20, as shown in Figures 3 and 4.

[0025] In this way, by using the recess 21a formed on the side surface of the lower end of the inner container 20 as the first engaging portion 21, when the inner container 20 is formed during manufacturing, the first engaging portion 21 can be formed at the same time as the inner container 20, making it possible to efficiently manufacture the inner container 20 equipped with the first engaging portion 21. Note that although Figures 3 and 4 show an example in which the first engaging portion 21 is the recess 21a, the shape of the first engaging portion 21 is not particularly limited, and the first engaging portion 21 may be, for example, a protrusion protruding from the side surface of the inner container 20 (not shown).

[0026] The inner container 20 of this embodiment shown in Figure 4 has a rectangular bottom and is a generally square tubular shape with a bottom, with a lower end formed by reducing the distance between two pairs of opposing flat surfaces by providing step portions 20b on each of the four flat surfaces that form the side surface of the inner container 20, and recesses 21a are formed as first engagement portions 21 on each of the two opposing flat surfaces 20a on the side surface of the lower end of the inner container 20. The lower end of the inner container 20 does not necessarily have to be formed by reducing the distance between the two pairs of opposing flat surfaces, but it is sufficient that a flat surface 20a is formed and a recess 21a is formed in the flat surface 20a.

[0027] The connecting member 30 connects the outer container 10 and the inner container 20 housed in the outer container 10 , and fixes the inner container 20 inside the outer container 10 .

[0028] The connecting member 30 includes a fitting wall portion 32 that fits into the lower end portion of the outer container 10, and a second engaging portion 31 that engages with the first engaging portion 21.

[0029] The connecting member 30 is connected to the outer container 10 by fitting the fitting wall portion 32 into the lower end portion of the outer container 10. The connecting member 30 shown in Fig. 4 has the fitting wall portion 32 erected on the periphery of a rectangular bottom portion 33, and when the fitting wall portion 32 is fitted into the lower end portion of the outer container 10, a frictional force is generated between the outer surface of the fitting wall portion 32 and the inner surface of the outer container 10, and the connecting member 30 is fixed to the lower end portion of the outer container 10. By providing an undercut engagement means between the outer surface of the fitting wall portion 32 and the inner surface of the outer container 10, it is possible to reliably fix the connecting member 30 to the lower end of the outer container 10. Alternatively, an adhesive may be applied to the outer surface of the fitting wall portion 32 and the inner surface of the outer container 10 to strengthen the connection between the connecting member 30 and the outer container 10.

[0030] It is preferable that the thickness of the fitting wall 32 is approximately the same as the height of the step 20b formed on the side surface of the inner container 20. If the thickness of the fitting wall 32 and the height of the step 20b are approximately the same when the connecting member 30 is connected to the inner container 20, the step on the side surface formed by the inner container 20 and the connecting member 30 can be made smaller, thereby preventing the inner container 20 from rattling when placed in the outer container 10.

[0031] The shape of the second engagement portion 31 and the position at which the second engagement portion 31 is arranged are not particularly limited, but as shown in Figures 3 and 4, it is preferable that the second engagement portion 31 is an engagement protrusion 31a formed on the inner surface of the insertion wall portion 32. If the engaging protrusion 31a formed on the inner surface of the insertion wall portion 32 is used as the second engaging portion 31, when forming the connecting member 30 during manufacturing, the second engaging portion 31 can be formed at the same time as the insertion wall portion 32, so that the connecting member 30 equipped with the insertion wall portion 32 and the second engaging portion 31 can be manufactured efficiently. Although Figures 3 and 4 show an example in which the second engagement portion 31 is an engagement protrusion 31a, if the first engagement portion 21 is a protrusion protruding from the side surface of the inner container 20, the second engagement portion 31 can also be formed as a recess (not shown).

[0032] As shown in FIG. 4, the fitting wall portion 32 can be provided with a slit 34 formed by cutting a predetermined length downward from the upper end.

[0033] When multiple slits 34 are provided in the fitting wall 32, the flat portion sandwiched between two slits 34 is more likely to elastically deform outward or inward. If the second engagement portion 31 is disposed on the flat portion between the two slits 34, when connecting the connecting member 30 to the inner container 20, the second engagement portion 31 can use its outward elastic deformation to climb over the flat portion 20a of the inner container 20, while securely engaging with the recess 21a, which is the first engagement portion 21, by using its inward elastic deformation.

[0034] Furthermore, when the insertion wall portion 32 of the connecting member 30 is inserted into the lower end portion of the outer container 10, the flat portion sandwiched between the two slits 34 of the insertion wall portion 32 elastically deforms inward, making it easy to insert the insertion wall portion 32 into the lower end portion of the outer container 10.

[0035] The double container 1 of this embodiment can be assembled by connecting the connecting member 30 to the inner container 20, inserting the connecting member 30 together with the inner container 20 from the lower end of the outer container 10, and fitting the insertion wall portion 32 of the connecting member 30 into the lower end of the outer container 10 (Figure 4). A cushioning material 60 can be placed between the inner container 20 and the bottom 33 of the connecting member 30. By placing such a cushioning material 60, it is possible to prevent rattling in the connection between the inner container 20 and the connecting member 30 due to errors that occur during mass production.

[0036] The first embodiment has been described above, but for example, if the lower end of the outer container 10 is cylindrical and the bottom 33 of the connecting member 30 is circular, the insertion wall portion 32 can be rotatably inserted into the lower end of the outer container 10.

[0037] Then, by adjusting the shapes of the lower end of the outer container 10 and the insertion wall portion 32 so that the connection between the outer container 10 and the connecting member 30 is released when the connecting member 30 rotates relative to the outer container 10 by a predetermined angle or more (for example, 30 degrees or more), the rotation of the connecting member 30 causes the connecting member 30 to detach from the lower end of the outer container 10, making it possible to remove the inner container 20 from the outer container 10 (not shown).

[0038] As a result, after the contents have been used up, the empty inner container 20 can be removed and replaced with a new inner container 20, so that the inner container 20 can be used as a refill container.

[0039] (Second embodiment) Next, a double container 1 according to a second embodiment of the present invention will be described with reference to Figures 5 to 10. The second embodiment differs from the first embodiment in its internal structure. Below, detailed description of the same configuration as the first embodiment will be omitted, and differences will be mainly described.

[0040] The lower end of the outer container 10 is rectangular tubular. As long as the lower end of the outer container 10 is rectangular tubular, there are no limitations on the shapes of the other parts.

[0041] The inner container 20 has a flat surface 20a on the side surface of the lower end, and a first engagement portion 21 is formed on the flat surface 20a.

[0042] The inner container 20 of this embodiment shown in Figure 6 has a rectangular bottom and is a generally square tubular shape with a bottom, with a lower end formed by reducing the distance between two pairs of opposing flat surfaces by providing step portions 20b on each of the four flat surfaces that form the side surface of the inner container 20, and a first engagement portion 21 is formed on each of the two opposing flat surfaces 20a on the side surface of the lower end of the inner container 20. The lower end of the inner container 20 does not necessarily have to be formed by reducing the distance between the two sets of opposing flat surfaces, but rather it is sufficient that a flat surface portion 20a is formed and the first engagement portion 21 is formed on the flat surface portion 20a.

[0043] The first engagement portion 21 is composed of a horizontal groove portion 21b extending laterally, and a vertical groove portion 21c extending vertically from the end of the horizontal groove portion 21b toward the lower end of the inner container 20. The two first engagement portions 21 formed on the two opposing flat surface portions 20a are arranged so as to overlap each other in a side perspective view from a direction perpendicular to the flat surface portions 20a.

[0044] The connecting member 30 of this embodiment is made up of a bottom member 50 and a slide member 40 that slides left and right on the bottom member 50.

[0045] The bottom member 50 comprises a rectangular bottom plate portion 52 with a through hole 51, an insertion wall portion 32 erected on the periphery of the bottom plate portion 52, and a bottom member engagement groove 53 extending left and right on the inner surface of the insertion wall portion 32.

[0046] The slide member 40 has a rectangular slide bottom plate portion 41 and slide side wall portions 42 erected on the side edges of the slide bottom plate portion 41 extending in the sliding direction. The slide member 40 slides left and right on the bottom plate portion 52 of the bottom member 50 .

[0047] An engagement protrusion 31a that is movable along the horizontal groove 21b and the vertical groove 21c of the first engagement portion 21 is formed on the inner surface of the slide side wall portion 42 as the second engagement portion 31. In addition, an outer engagement protrusion 43 that engages with the bottom member engagement groove 53 of the bottom member 50 so as to be movable along the bottom member engagement groove 53 is formed on the outer surface of the slide side wall portion 42.

[0048] 8, a finger hook 44 is formed on the sliding bottom plate 41 for the user to hook their fingers on. As shown in FIG. 9, the finger hook 44 is exposed on the bottom surface of the double container 1 through a through-hole 51 in the bottom member 50 so that the user can hook their fingers on it. This allows the user to place his / her finger on the finger hook 44 and slide the slide member 40 left and right.

[0049] A cushioning material 60 can be placed between the inner container 20 and the sliding bottom plate portion 41 of the sliding member 40. By placing such a cushioning material 60, it is possible to prevent rattling in the connection between the inner container 20 and the sliding member 40 due to errors that occur during mass production.

[0050] 7 shows a state in which the first engagement portion 21 of the inner container 20 and the second engagement portion 31 of the sliding member 40 are engaged, but when the sliding member 40 is slid (to the left in the figure), the engagement protrusion 31a of the sliding member 40 moves within the horizontal groove 21b to the end of the horizontal groove 21b. As a result, the restriction on upward movement of the inner container 20 relative to the sliding member 40 is released.

[0051] Then, when the inner container 20 is lifted upward, the engaging protrusion 31a moves within the vertical groove 21c to the lower end of the inner container 20, the engagement between the first engaging portion 21 and the second engaging portion 31 is completely released, and the inner container 20 can be pulled out and removed from the outer container 10.

[0052] In another embodiment, as shown in FIG. 10, the first engagement portion 21 is configured with a horizontal groove portion 21b extending left and right and two vertical groove portions 21c extending vertically from both ends of the horizontal groove portion 21b toward the bottom end. When the slide member 40 is slid left or right, the engagement protrusion 31a of the slide member 40 moves within the horizontal groove portion 21b to either the left or right end of the horizontal groove portion 21b, thereby releasing the restriction on the upward movement of the inner container 20.

[0053] Then, when the inner container 20 is lifted upward, the engaging protrusion 31a moves within the vertical groove 21c to the lower end of the inner container 20, the engagement between the first engaging portion 21 and the second engaging portion 31 is completely released, and the inner container 20 can be pulled out and removed from the outer container 10.

[0054] When placing the inner container 20 in the outer container 10, the inner container 20 can be fixed in the outer container 10 by performing the steps reverse to those for removing the inner container 20 described above. However, regardless of the sliding position of the sliding member 40, even if the sliding member 40 is slid to the right as shown in FIG. 7, when the inner container 20 is pushed in from above, the sliding side wall portion 42 of the sliding member 40 bends outward, and the engaging protrusion 31a climbs over the flat portion 20a of the inner container 10 and engages with the horizontal groove portion 21b, thereby fixing the inner container 20 in the outer container 10.

[0055] In this way, after the contents have been used up, the empty inner container 20 can be removed and easily replaced with a new inner container 20, so that the inner container 20 can be used as a refill container.

[0056] (Third embodiment) Next, a double container 1 according to a third embodiment of the present invention will be described with reference to Figures 11 to 14B. The third embodiment differs from the first embodiment in its internal structure. Below, detailed description of the same configuration as the first embodiment will be omitted, and differences will be mainly described.

[0057] The lower end of the outer container 10 is rectangular tubular. As long as the lower end of the outer container 10 is rectangular tubular, there are no limitations on the shapes of the other parts.

[0058] The inner container 20 has a flat surface 20a on the side surface at the lower end thereof, and a horizontal groove 21b extending in the left and right direction is formed as a first engagement portion 21 on the flat surface 20a.

[0059] The inner container 20 of this embodiment shown in Figure 12 has a rectangular bottom and is a generally square tubular shape with a bottom, with a lower end formed by reducing the distance between two pairs of opposing flat surfaces by providing step portions 20b on each of the four flat surfaces that form the side surface of the inner container 20, and first engagement portions 21 consisting of horizontal groove portions 21b are formed on the two opposing flat surfaces 20a on the side surface of the lower end of the inner container 20 so as to cross the flat surfaces 20a in the width direction. The lower end of the inner container 20 does not necessarily have to be formed by reducing the distance between the two sets of opposing flat surfaces, but rather it is sufficient that a flat surface portion 20a is formed and the first engagement portion 21 is formed on the flat surface portion 20a.

[0060] The connecting member 30 of this embodiment is made up of a frame member 70 and a slide member 40 that slides left and right.

[0061] The frame member 70 has a rectangular cylindrical shape with the fitting wall portions 32 as its side faces, and is provided with locking portions 71 on two opposing inner surfaces of the fitting wall portions 32, extending laterally by a predetermined length. 13, a raised portion 72 that protrudes inward by increasing the thickness of the fitting wall portion 32 is formed on the inner surface of the fitting wall portion 32, and the horizontally formed upper edge of the raised portion 72 serves as the locking portion 71. However, the locking portion 71 can be formed by any method, such as by attaching a separate member different from the fitting wall portion 32 to the inner surface of the fitting wall portion 32.

[0062] The two opposing locking portions 71 extend laterally on the inner surface of the fitting wall portion 32 by the same predetermined length, and are disposed so as to face each other (FIG. 13).

[0063] As shown in Figure 12, the sliding member 40 has a rectangular sliding bottom plate portion 41 that closes the lower end opening of the outer container 10, and a sliding side wall portion 42 that stands on a part of the side edge of the sliding bottom plate portion 41 extending in the sliding direction.

[0064] The sliding side wall 42 has a second engagement portion 31 on its inner surface, which has an inner engagement protrusion 31b formed thereon and which is movable along the horizontal groove 21b of the inner container 20. The sliding side wall 42 also has an outer engagement protrusion 43 on its outer surface which engages with the locking portion 71 of the frame member 70.

[0065] A cushioning material 60 can be placed between the inner container 20 and the sliding bottom plate portion 41 of the sliding member 40. By placing such a cushioning material 60, it is possible to prevent rattling in the connection between the inner container 20 and the sliding member 40 due to errors that occur during mass production.

[0066] Figure 14A shows a state in which the horizontal groove portion 21b, which is the first engagement portion 21 of the inner container 20, engages with the inner engagement protrusion 31b, which is the second engagement portion 31 of the slide member 40, and the outer engagement protrusion 43 of the slide member 40 engages with the locking portion 71 of the frame member 70.

[0067] 14B, when slide member 40 is slid (sliding to the right in the figure), inner engaging protrusion 31b of slide member 40 moves within horizontal groove 21b. Meanwhile, outer engaging protrusion 43 of slide member 40 moves a predetermined length as slide member 40 moves, and then disengages from locking portion 71.

[0068] As a result, the downward movement of the slide member 40 relative to the frame member 70 is no longer restricted, and the inner container 20 together with the slide member 40 can be pulled downward from the outer container 10 and removed.

[0069] After the inner container 20 is removed from the outer container 10 together with the slide member 40, by further sliding the slide member 40, the inner engaging protrusion 31b of the slide member 40 is pulled out from the end of the horizontal groove portion 21b of the inner container 20, and the slide member 40 can be removed from the inner container 20.

[0070] When the inner container 20 is to be housed in the outer container 10, the inner container 20 can be housed and fixed in the outer container 10 by performing the above steps in reverse.

[0071] In this way, after the contents have been used up, the empty inner container 20 can be removed and easily replaced with a new inner container 20, so that the inner container 20 can be used as a refill container.

[0072] (Fourth embodiment) Next, a double container 1 according to a fourth embodiment of the present invention will be described with reference to Figures 15 to 18. The third embodiment differs from the first embodiment in its internal structure. Below, detailed description of the same configuration as the first embodiment will be omitted, and differences will be mainly described.

[0073] The inner container 20 has, as the first engagement portion 21, a male screw portion 21d at its lower end portion, which screws forward and backward along the axis of the outer container 10.

[0074] FIG. 17 shows an embodiment in which a covering member 80 is attached to the inner container 20 to form a male screw portion 21d at the lower end of the inner container 20. However, it is not necessary to use the covering member 80 to form the male screw portion 21d at the lower end of the inner container 20, and any method can be used, such as molding the inner container 20 so that the male screw portion 21d is formed at the lower end.

[0075] The covering member 80 includes a covering portion 81 that covers the lower end of the cylindrical inner container 20 with a bottom, and a protruding portion 82 that protrudes downward while covering the lower end of the inner container 20 together with the covering portion 81, and has a male screw portion 21d formed on its outer diameter surface.

[0076] The threads of the male screw portion 21d are not particularly limited, but if they are multiple-start threads such as four-start threads as shown in Figure 17 and used as the first engagement portion 21, it will be possible to screw in and out the inner container 20 with a small number of rotations.

[0077] FIG. 18 shows an embodiment in which the connecting member 30 is formed by two members, a base member 50 and a support member 90 .

[0078] The bottom member 50 includes a rectangular bottom plate portion 52a and an insertion wall portion 32 erected on the periphery of the bottom plate portion 52a.

[0079] The support member 90 has a cylindrical tubular portion 91 whose top opens to the upper surface of the bottom plate portion 52b, and a female screw portion 31c is formed on the inner diameter surface of the tubular portion 91. The female screw portion 31c, as the second engagement portion 31, screws into the male screw portion 21d, which is the first engagement portion 21 of the inner container 20.

[0080] The threads of the female screw portion 31c are not particularly limited, but can be a multiple thread such as a four-thread thread, similar to the male screw portion 21d shown in FIG.

[0081] The bottom plate portion 52b of the support member 90 is rectangular, and pillar portions 92 that are V-shaped in a plan view from above are provided at a pair of diagonal corners of the bottom plate portion 52b so as to protrude upward. The bottom plate portion 52a of the bottom member 50 is rectangular, and the fitting wall portion 32 has corners where adjacent flat surfaces intersect at right angles.

[0082] When the support member 90 is inserted from above the bottom member 50, the outer surfaces of the pillar portions 92 diagonally located on the bottom plate portion 52b of the support member 90 come into contact with the inner surfaces of the corners of the insertion wall portion 32 of the bottom member 50, and the support member 90 is fixed onto the bottom member 50.

[0083] As a result, the bottom plate portion 52b of the support member 90 and the bottom plate portion 52a of the bottom member 50 form the bottom plate portion 52 of the connecting member 30, and the connecting member 30 can be formed with an insertion wall portion 32 erected on the periphery of the bottom plate portion 52 and a female screw portion 31c as a second engagement portion 31 on the upper surface of the bottom plate portion 52. In this embodiment, the connecting member 30 is formed from two members, the bottom member 50 and the support member 90, but this is not limited to this, and the connecting member can also be formed from one member or a combination of three or more members.

[0084] One of the first engaging portion 21 and the second engaging portion 31 has a magnet, and the other has a magnet or a magnetic body, so that the first engaging portion 21 and the second engaging portion 31 are biased in directions that bring them closer to each other.

[0085] In this embodiment, as shown in Fig. 15, a magnet is embedded in the tip of a protruding portion 82 of a covering member 80 in which a male screw portion 21d is formed as the first engaging portion 21. Also, as shown in Fig. 18, a recess 52c is formed in the center of a bottom plate portion 52a of a bottom member 50 constituting the connecting member 30, and a magnetic body 102 is housed in this recess 52c. In this way, the first engaging portion 21 and the second engaging portion 31 are provided with a magnet 101 and a magnetic body 102, respectively, and the first engaging portion 21 and the second engaging portion 31 are biased by magnetic force so as to approach each other.

[0086] By biasing the first engaging portion 21 and the second engaging portion 31 in a direction that brings them closer to each other, it is possible to prevent the inner container 20 from rotating unintentionally, disengaging the first engaging portion 21 and the second engaging portion 31, and causing the inner container 20 to fall off. Furthermore, when placing the inner container 20 inside the outer container 10, once the inner container 20 is inserted into the outer container 10, the inner container 20 rotates along the threads of the male screw portion 21d and engages with the connecting member 30 without the need for a hand from the position where the magnetic force is applied, so the inner container 20 can be easily placed inside the outer container 10.

[0087] In the illustrated embodiment, the inner container 20 is provided with the magnet 101 and the connecting member 30 is provided with the magnetic body 102, but the inner container 20 may be provided with the magnetic body 102 and the connecting member 30 may be provided with the magnet 101. Also, instead of the magnetic body 102, a magnet that generates an attractive force with the magnet 101 may be provided.

[0088] When removing the inner container 20 from the outer container 10, the side of the outer container 10 is held by hand and the inner container 20 is rotated in a predetermined direction with the dispenser 100 attached or with the dispenser 100 removed. In this embodiment, which has the male screw portion 21d shown in Fig. 17 and the female screw portion 31c shown in Fig. 18, the engagement between the first engagement portion 21 and the second engagement portion 31 can be released by rotating the inner container 20 leftward in a plan view from above.

[0089] After the first engaging portion 21 and the second engaging portion 31 are disengaged, the inner container 20 can be removed from the outer container 10 by lifting the inner container 20 upward.

[0090] When the inner container 20 is to be housed in the outer container 10, the inner container 20 can be fixed in the outer container 10 by performing the above steps in reverse.

[0091] In this way, after the contents have been used up, the empty inner container 20 can be removed and easily replaced with a new inner container 20, so that the inner container 20 can be used as a refill container.

[0092] (Other embodiments) The double containers according to the first to fourth embodiments have been described above. However, the above description is merely an example, and the specific configuration, operation, etc. of the present invention can be adjusted as appropriate.

[0093] For example, in the fourth embodiment, a through hole (not shown) is provided vertically at the center of the bottom plate portion 52b of the support member 90 of the connecting member 30 and at the center of the bottom plate portion 52a of the bottom member 50, and the inner container 20 can be removed from the outer container 10 by pushing up the lower end of the first engagement portion 21 of the inner container 20 from below the connecting member 30 through the through hole with a rod or the like.

[0094] Furthermore, in the double container 1 of the fourth embodiment, for example, by preparing a base 110 as shown in FIG. 19, two double containers 1 can be stably placed side by side on the base 110.

[0095] Two recesses 110a and 110b, each of which is substantially rectangular in shape when viewed from above, are formed on the top surface of base 110, which is a substantially rectangular plate. Magnets or magnetic bodies (not shown) are placed at the bottoms of recesses 110a and 110b, and these magnets or magnetic bodies generate an attractive force with magnet 101 provided in inner container 20. When double container 1 is placed in each of the two recesses 110a and 110b, double container 1 can be detachably fixed to base 110 by the attractive force between magnet 101 provided in inner container 20 and the magnets or magnetic bodies placed in recesses 110a and 110b.

[0096] 20, recesses 110a, 110b are provided with an inclined surface 110s that is inclined at an angle of approximately 45 degrees so that the opening widens upward on one side that is aligned with the long side of base 110. Therefore, when double container 1 placed on base 110 is tilted along inclined surface 110s, the attractive force of the magnet can be weakened, and double container 1 can be easily removed from base 110.

[0097] The above describes each embodiment of the double container. However, by devising the shapes and structures of the outer container, inner container, and connecting member that make up the double container, as well as the shapes and arrangements of the first engagement portion, second engagement portion, and insertion wall portion (none of which are shown), it becomes possible to remove the inner container from the outer container by performing the following operations. Slide the side of the outer container Push the side of the outer container Press the button located on the bottom of the connecting part - Insert a coin into the groove on the bottom of the connecting member to rotate it. Push the inner container in the axial direction [Explanation of symbols]

[0098] 1 double container 10 Outer container 20 Inner container 20a Flat part 20b Step 21 First engagement portion 21a Recess 21b Horizontal groove 21c Vertical groove 21d Male thread part 30 Connecting member 31 second engagement portion 31a Engaging protrusion 31b Inner engaging protrusion 31c Female thread part 32 Inset wall part 33 Bottom 34 Slit 40 Slide member 41 Slide bottom plate 42 Slide side wall 43 Outer engaging protrusion 44 Finger rest 50 Bottom member 51 Through hole 52 Bottom plate part 52a Bottom plate part 52b Bottom plate part 52c recess 53 Bottom member engagement groove 60 cushioning material 70 Frame members 71 Locking part 72 Ridge 80 Covering material 81 Covering part 82 Protrusion 90 Support member 91 Cylindrical part 92 Column section 100 Dispensers 101 Magnet 102 Magnetic material 110 Pedestal 110a recess 110b recess 110s slope

Claims

1. A cylindrical outer container; an inner container accommodated in the outer container; A double container provided with a connecting member that connects the outer container and the inner container, the inner container has a first engaging portion at a lower end thereof that engages with the connecting member, The connecting member has an insertion wall portion that fits into the lower end of the outer container, and a second engaging portion that engages with the first engaging portion.

2. The double container according to claim 1 , wherein the fitting wall portion is rotatably fitted into the lower end portion of the outer container.

3. the inner container has the first engaging portion formed by forming a recess on a side surface at a lower end thereof, The double container according to claim 1 or 2, wherein the connecting member has the second engaging portion formed by an engaging protrusion on the inner surface of the fitting wall portion.

4. The outer container has a rectangular cylindrical lower end, the inner container is provided with the first engaging portion, which is formed by a flat portion formed on a side surface at the lower end thereof, and which has a horizontal groove portion extending laterally and a vertical groove portion extending vertically from the end of the horizontal groove portion toward the lower end thereof; the connecting member comprises a bottom member and a slide member that slides left and right on the bottom member, the bottom member includes a rectangular bottom plate portion having a through hole, the fitting wall portion erected on the periphery of the bottom plate portion, and a bottom member engagement groove extending laterally on the inner surface of the fitting wall portion, The slide member has a rectangular slide bottom plate portion and a slide side wall portion erected on a side edge of the slide bottom plate portion extending in a slide direction, The double container described in claim 1, comprising: a second engagement portion formed by an engagement protrusion formed on the inner surface of the sliding side wall portion that is movable along the horizontal groove portion and the vertical groove portion; an outer engagement protrusion formed on the outer surface of the sliding side wall portion that engages with the bottom member engagement groove so as to be movable along the bottom member engagement groove; and a finger hook portion on the sliding bottom plate portion that can be hooked with a finger through the through hole.

5. The outer container has a rectangular cylindrical lower end, the inner container has the first engaging portion formed by a horizontal groove extending laterally in a flat portion formed on a side surface at a lower end thereof, The connecting member comprises a frame member and a slide member that slides left and right, the frame member has a rectangular cylindrical shape with the fitting wall portion as a side surface, and includes a locking portion extending laterally by a predetermined length on the inner surface of the fitting wall portion; the sliding member has a rectangular sliding bottom plate portion that closes the lower end opening of the outer container, and a sliding side wall portion that stands on a part of a side edge of the sliding bottom plate portion that extends in a sliding direction, The double container of claim 1, further comprising: a second engagement portion formed by an inner engagement protrusion on the inner surface of the sliding side wall portion that is movable along the horizontal groove portion; and an outer engagement protrusion on the outer surface of the sliding side wall portion that engages with the locking portion.

6. the inner container has the first engaging portion formed at its lower end with a male screw portion that screws forward or backward along the axis of the outer container, the connecting member includes a bottom plate portion, the fitting wall portion erected on the periphery of the bottom plate portion, and the second engaging portion formed by forming a female screw portion on the upper surface of the bottom plate portion, 2. The double container according to claim 1, wherein one of the first engaging portion and the second engaging portion is provided with a magnet and the other is provided with a magnet or a magnetic body, and the first engaging portion and the second engaging portion are biased in directions in which they approach each other.

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