Structure, container, method for manufacturing the structure, and method for manufacturing the container

Abstract

Seal the opening of the container without using a sealing film. [Solution] The device comprises a cylindrical first member, a plate-shaped second member positioned in contact with a first end which is one end of the first member, and one or more third members positioned protruding from the inner circumferential surface of the first member. The second member has one or more openings formed at positions corresponding to each of the one or more third members, and each of the one or more third members is positioned such that at least a portion of it is away from the first end and has a gap in the circumferential direction of its inner circumferential surface.

Description

Technical Field

[0001] The present invention relates to a structure, a container, a method for manufacturing the structure, and a method for manufacturing the container.

Background Art

[0002] In recent years, so-called refill containers have been used from the perspective of environmental issues. A refill container is removably housed in an outer container, and when the contents are exhausted, it is removed from the outer container, and a new refill container is housed in the outer container.

[0003] As such a refill container, it is known that a seal film is attached to the opening before use and peeled off at the time of use and then attached to the outer container. For example, it is disclosed in Patent Document 1.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in a refill container in which a seal film is attached to the opening before use and peeled off at the time of use and then attached to the outer container, when the seal film is peeled off, there is a risk that the adhesive to which the seal film was attached remains on the opening. In addition, it becomes necessary to consider a material having durability according to the type of the contents as a material constituting the seal film and the adhesive.

[0006] An object of the present invention is to provide a structure, a container, a method for manufacturing the structure, and a method for manufacturing the container that are suitable for closing the opening of the container without using a seal film.

Means for Solving the Problems

[0007] To achieve the above objective, the structure of the present invention is: A cylindrical first member, A plate-shaped second member is disposed in contact with the first end, which is one end of the first member, It comprises one or more third members that protrude from the inner circumferential surface of the first member, The second member has one or more openings formed at positions corresponding to each of the one or more third members, Each of the one or more third members is positioned such that at least a portion of it is away from the first end, and that there is a gap in the circumferential direction of the inner surface.

[0008] By using a structure with this configuration, the opening of the container body can be sealed without using a sealing film by inserting the flange portion provided at the open end of the container body between the second and third members.

[0009] Furthermore, the configuration may include a fourth member positioned on the inner circumferential surface of the first member at a position corresponding to each of the one or more third members.

[0010] In this configuration, the flange provided at the open end of the container body can be inserted between the second and third members and screw-engaged to prevent the structure from rotating excessively.

[0011] Furthermore, the structure of the present invention is A structure for closing the opening of a container body, the container body having an open end and a flange portion that extends radially outward at the open end, A cylindrical first member, A plate-shaped second member is disposed in contact with the first end, which is one end of the first member, It comprises one or more third members that protrude from the inner circumferential surface of the first member, The second member has one or more openings formed at positions corresponding to each of the one or more third members, Each of the one or more third members is positioned such that at least a portion of it is away from the first end, and that there is a gap in the circumferential direction of the inner surface, such that the flange portion fits between it and the second member.

[0012] In this configuration, the opening of the container can be sealed without using a sealing film by inserting the flange portion of the container body between the second and third members to close the opening of the container body.

[0013] Furthermore, the container of the present invention is A container body having one end open and a flange portion that widens radially outward at the open end, It has a structure that closes the opening, The aforementioned structure is A cylindrical first member, A plate-shaped second member is disposed in contact with the first end, which is one end of the first member, It comprises one or more third members that protrude from the inner circumferential surface of the first member, Each of the one or more third members is positioned such that at least a portion of it is away from the first end, and that there is a gap in the circumferential direction of the inner surface, such that the flange portion fits between it and the second member.

[0014] In this configuration, the opening of the container can be sealed without using a sealing film by inserting the flange portion of the container body between the second and third members of the structure.

[0015] Furthermore, the second member may have one or more openings formed at positions corresponding to each of the one or more third members.

[0016] In this configuration, the third component is formed using a mold, making it easier to form the third component.

[0017] Further, the container body may be configured to be detachable from the outer container.

[0018] In such a configuration, the container body can be used as a refill container.

[0019] Also, the container body may be configured to be housed in the outer container with the opening blocked by the structure.

[0020] In such a configuration, while being able to be housed in the placement container serving as the outer container, the container can be taken out of the outer container and carried while the opening is blocked by the structure.

[0021] Also, the container body is configured to be housed in the outer container, and the flange portion may be configured to be placed on the upper surface of the mouth portion of the outer container when the container body is housed in the outer container.

[0022] In such a configuration, by placing the flange portion on the upper surface of the mouth portion, it is possible to prevent the container body from entering further into the outer container.

[0023] Also, the manufacturing method of the structure of the present invention is a first mold member for forming the inner peripheral surface of the first member and the surface of the second member on the first member side, a core pin having a shape in which one end of a cylinder is blocked and the other end is open, protruding from the one end side to the other end side along the inner peripheral surface of the cylinder by an amount corresponding to the height of the surface of the third member on the second member side away from the inner peripheral surface of the cylinder by the thickness of the first member, for forming the third member, and a second mold member for forming the outer peripheral surface of the first member and the surface of the second member on the side opposite to the first member are used, a step of overlapping the first mold member and the second mold member so that the first mold member enters from the other end of the second mold member, a step of injecting molten resin between the first mold member and the second mold member, The process includes a step of separating the first mold member and the second mold member.

[0024] In this configuration, the third member is formed using core pins, making it easier to form the third member.

[0025] Furthermore, the method for manufacturing the container of the present invention is A first mold member for forming the inner circumferential surface of the first member and the surface of the second member on the first member side, The first member has a cylindrical shape with one end closed and the other end open, and a core pin for forming the third member is provided, which is located away from the inner surface of the cylindrical shape by the thickness of the first member and along the inner surface of the cylindrical shape, and protrudes from the one end to the other end by an amount corresponding to the height of the surface of the third member on the second member side, and a second mold member for forming the outer surface of the first member and the surface of the second member opposite to the first member, A step of overlapping the first mold member and the second mold member such that the first mold member enters from the other end of the second mold member, A step of injecting molten resin between the first mold member and the second mold member, A step of separating the first mold member and the second mold member, The process includes the step of attaching the structure to the container body such that the flange portion fits between the second member and each of the one or more third members.

[0026] In this configuration, the third member is formed using core pins, making it easier to form the third member. [Effects of the Invention]

[0027] According to the present invention, the opening of the container can be sealed without using a sealing film. [Brief explanation of the drawing]

[0028] [Figure 1]This figure shows one embodiment of the container of the present invention. [Figure 2] This figure shows an example of the lid structure shown in Figure 1. [Figure 3] This figure shows an example of the container body configuration shown in Figure 1. [Figure 4] This is a diagram illustrating the state in which the lid is attached to the container body. [Figure 5] This is a diagram illustrating the manufacturing method of the lid. [Figure 6] This is a diagram illustrating the manufacturing method of the lid. [Figure 7] This is a diagram illustrating the manufacturing method of the lid. [Figure 8] This is a diagram illustrating the manufacturing method of the lid. [Figure 9] This figure shows an example of how the container shown in Figure 1 is used. [Figure 10] This figure shows other examples of how the container shown in Figure 1 is used. [Figure 11] This figure shows another example of the lid configuration shown in Figure 1. [Figure 12] Figure 11 is a diagram illustrating the state in which the lid shown is attached to the container body. [Modes for carrying out the invention]

[0029] Embodiments of the present invention will be described below with reference to the drawings.

[0030] <Container composition> First, the overall structure of the container of the present invention will be described.

[0031] Figure 1 shows one embodiment of the container of the present invention, and is a view from diagonally above.

[0032] As shown in Figure 1, the container 1 in this embodiment has a container body 20 and a lid 10, and the lid 10 is detachably attached to the container body 20.

[0033] In the following description, "upper" refers to the side on which the lid 10 is provided, and "lower" refers to the side on which the container body 20 is provided. The following describes each component that makes up the container 1.

[0034] <Composition of Lid 10> Figure 2 shows an example of the configuration of the lid 10 shown in Figure 1, and is a view from diagonally below.

[0035] The lid 10 is an example of a structure in the present invention. The lid 10 is made of resin and may have a top surface portion 11 and a side surface portion 12, as shown in Figures 1 and 2.

[0036] The top surface portion 11 is an example of a second member in the present invention. The top surface portion 11 is formed in a disc shape, and four forming holes 13 are provided in the region along the peripheral edge. The four forming holes 13 are an example of an opening in the present invention. Each of the four forming holes 13 penetrates the top surface portion 11 from both sides and is provided to form an arc of a predetermined length along the peripheral edge of the top surface portion 11. The four forming holes 13 are provided at equal intervals in the direction along the peripheral edge of the top surface portion 11. As shown in Figure 2, a packing 15 is attached to the lower surface of the top surface portion 11 as an airtight structure. The packing 15 is a sheet-like material made of, for example, resin, and may have waterproofing and elasticity.

[0037] The side portion 12 is an example of the first member in the present invention. The side portion 12 is formed in a cylindrical shape that is continuous with the peripheral edge of the top portion 11. As a result, the top portion 11 is positioned in contact with the first end, which is one end of the side portion 12. As shown in Figure 2, the side portion 12 is provided with projections 14 on its inner surface. The projections 14 are an example of the third member in the present invention. The projections 14 are positioned to protrude from the inner circumferential surface of the side portion 12 toward the inside of the side portion 12 by a predetermined height. There are four projections 14 on the inner circumferential surface of the side portion 12, corresponding to the four forming holes 13, with gaps between them in the circumferential direction. In other words, each of the four forming holes 13 is formed at a position corresponding to the four projections 14, and the projections 14 have the same length as the forming holes 13 below the forming holes 13. Furthermore, the projections 14 do not extend parallel to the top portion 11, but are inclined relative to the top portion 11. Specifically, each of the projections 14 is shaped to extend inclined so that the distance from the top surface 11 gradually narrows as viewed clockwise from the surface to which the packing 15 is attached. The distance between the projection 14 and the packing 15 at the point closest to the top surface 11 is such that the flange 24 of the container body 20 (see Figure 3), which will be described later, can fit inside. In other words, at least a portion of the projection 14 is positioned away from the end of the side surface 12 that contacts the top surface 11. In addition, four ribs 17 are provided between the projection 14 and the top surface 11. The ribs 17 are an example of a fourth component in the present invention. The four ribs 17 are provided corresponding to each of the four projections 14, and at the point closest to the projection 14 and the top surface 11, they are positioned to protrude from the inner circumferential surface of the side surface 12 toward the inside of the side surface 12 by a predetermined height.

[0038] <Composition of the container body 20> Figure 3 is a diagram showing an example of the configuration of the container body 20 shown in Figure 1, and is a view from diagonally above.

[0039] The container body 20 shown in Figure 1 may be a bottomed cylindrical shape having a bottom 21 and side portions 22, as shown in Figure 3. Because the container body 20 is bottomed cylindrical, the end opposite the bottom 21 is an opening 23. The side portion 22 is a roughly cylindrical shape with a wider diameter on the opening 23 side than on the bottom 21 side, and a flange 24 is provided at the end on the opening 23 side (opposite the bottom 21). Four flanges 24 are provided at equal intervals in the circumferential direction of the side portion 22. The flanges 24 are provided so as to widen radially outward from the side portion 22. The circumferential length of the flanges 24 on the side portion 22 is shorter than the spacing between the multiple protrusions 14 provided on the side portion 12 of the lid 10.

[0040] In this configuration, the container body 20 will hold the contents, such as cosmetics, in the space enclosed by the bottom 21 and the side parts 22. The contents stored in the container body 20 will then be removed from the opening 23.

[0041] Here, the container body 20 may be used as a so-called refill container. In that case, the opening 23 needs to be sealed before using the contents of the container body 20, such as cosmetics. Therefore, the opening 23 of the container body 20 can be sealed by the lid 10 shown in Figures 1 and 2.

[0042] <Attaching the lid 10 to the container body 20> The method and state of attaching the lid 10, configured as described above, to the container body 20 will be explained below.

[0043] Figure 4 is a diagram illustrating the state in which the lid 10 is attached to the container body 20, and is a cross-sectional view AA of Figure 1.

[0044] As described above, the container body 20 is provided with a flange portion 24 at the end of the side portion 22 on the opening 23 side, which widens radially outward from the side portion 22. As shown in Figure 4, the outer diameter of the side portion 22 including the flange portion 24 is R1.

[0045] On the other hand, as described above, the lid 10 is provided with a projection 14 on the inner surface of the side portion 12 that protrudes from the inner surface of the side portion 12 toward the inside of the side portion 12 by a predetermined height. As shown in Figure 4, the inner diameter R2 of the lid 10, including the height of the projection 14, is smaller than the outer diameter R1 of the side portion 22 including the flange portion 24, while the inner diameter R3 of the lid 10, excluding the projection 14, is larger than the outer diameter R1 of the side portion 22 including the flange portion 24.

[0046] Furthermore, four flange portions 24 are provided at equal intervals in the circumferential direction on the side portion 22 of the container body 20, and four projections 14 are also provided at equal intervals in the circumferential direction on the side portion 12 of the lid 10. The circumferential length of the flange portion 24 on the side portion 22 is shorter than the spacing between the multiple projections 14 provided on the side portion 12 of the lid 10.

[0047] Therefore, when attaching the lid 10 to the container body 20, first, the opening 23 of the container body 20 is brought into contact with the surface of the top portion 11 of the lid 10 to which the packing 15 is attached, and the four flange portions 24 are each inserted between two protrusions 14. As described above, the inner diameter R2 of the lid 10, including the height of the protrusions 14, is smaller than the outer diameter R1 of the side portion 22 including the flange portions 24, but the inner diameter R3 of the lid 10, excluding the protrusions 14, is larger than the outer diameter R1 of the side portion 22 including the flange portions 24. In addition, the circumferential length of the side portion 22 of the flange portion 24 is shorter than the spacing between the multiple protrusions 14 provided on the side portion 12 of the lid 10. Therefore, the flange portions 24 can be inserted between two protrusions 14.

[0048] Subsequently, by rotating the lid 10, the flange portion 24 can be inserted between the top surface 11 and the projection 14, as shown in Figure 4. At this time, as described above, each of the projections 14 is shaped to extend inclined so that the distance from the top surface 11 gradually narrows as you move clockwise when viewed from the surface to which the packing 15 is attached. Therefore, by rotating the lid 10 clockwise when viewed from above, the flange portion 24 becomes screw-engaged with the projections 14, and the opening 23 of the container body 20 can be brought closer to the packing 15. As described above, the distance between the projection 14 and the packing 15 at the part of the projection 14 closest to the top surface 11 is just enough for the flange portion 24 of the container body 20 to fit into. Therefore, after inserting the flange portion 24 between the two projections 14, the lid 10 can be rotated to insert the flange portion 24 between the top surface 11 and the projection 14.

[0049] In this case, as shown in Figure 4, a protrusion 25 may be provided around the entire circumference of the side portion 22 of the container body 20, between the side portion 22 and the flange portion 24. The protrusion 25 protrudes above the flange portion 24 by a predetermined height at the end of the side portion 22 where the flange portion 24 is provided. The height of the protrusion 25 is such that its upper surface contacts the packing 15 when the flange portion 24 is inserted between the top portion 11 and the projection 14. As a result, after inserting the flange portion 24 between the four projections 14, when the lid 10 is rotated to insert the flange portion 24 between the top portion 11 and the projection 14, airtightness between the container body 20 and the lid 10 is maintained. In this case, since airtightness between the container body 20 and the lid 10 is maintained using the packing 15, airtightness between the container body 20 and the lid 10 can be maintained without changing the configuration of the container body 20 and the lid 10.

[0050] Furthermore, because the upper surface of the protrusion 25 is in contact with the packing 15, the lid 10 cannot be rotated any further clockwise, and the flange 24 does not move to a position where it would re-enter between the multiple protrusions 14. In other words, the flange 24 and the protrusions 14 are screw-engaged. In addition, as described above, a rib 17 is provided between each of the four protrusions 14, projecting inward from the inner circumferential surface of the side surface 12 at the point where the protrusion 14 is closest to the top surface 11. This prevents the lid 10 from rotating more than necessary after the flange 24 and the protrusions 14 are screw-engaged.

[0051] As described above, in this embodiment, the lid 10 that closes the opening 23 of the container body 20 has a cylindrical side portion 12, a plate-shaped top portion 11 that is in contact with one end of the side portion 12, and a projection 14 that protrudes from the inner circumferential surface of the side portion 12. The projection 14 is positioned such that at least a part of it is away from the end of the side portion 12 on the top portion 11 side, and there is a gap in the circumferential direction of the inner circumferential surface. Therefore, by inserting the flange portion 24 provided at the open end of the container body 20 between the top portion 11 of the lid 10 and the projection 14, the opening 23 of the container body 20 can be closed without using a sealing film.

[0052] Furthermore, if a screw structure is formed at the open end of the metal container body 20 for screw engagement with the lid 10, a groove will be created on the back surface of the screw structure. To fill this groove, a two-part structure will be required, resulting in a complex structure.

[0053] On the other hand, in this embodiment, as described above, the flange portion 24 provided at the open end of the container body 20 is screw-engaged with the projection 14 of the lid 10, thereby closing the open end of the container body 20 with the lid 10. Therefore, the open end of the bottomed cylindrical container body 20, which is made of metal, can be closed by screw-engaging the lid 10 with a simple structure without having to make part of the container body 20 a two-piece structure. Furthermore, because the container body 20 is made of metal, a container 1 can be realized in which the flange portion 24 is formed on a single metal part by press working, and the flange portion 24 is screw-engaged with the projection 14, thereby closing the open end of the container body 20 with the lid 10.

[0054] In this embodiment, four flanges 24 on the container body 20 and four projections 14 on the lid 10 are provided at equal intervals. However, the number of flanges 24 is not limited to four, and the number of projections 14 is not limited to four. However, if multiple projections 14 are arranged at equal intervals in the circumferential direction of the side surface 12, the flanges 24 can be screw-engaged with multiple projections 14 to securely close the open end of the container body 20 while maintaining airtightness between the lid 10 and the container body 20. Furthermore, if the number of projections 14 is a multiple of the number of flanges 24, when the flanges 24 are screw-engaged with the projections 14, all of the flanges 24 will fit between the projections 14 and the top surface 11, making it less likely for the lid 10 to tilt relative to the container body 20.

[0055] <Method for manufacturing the lid 10> The manufacturing method for the lid 10 will be described below.

[0056] As described above, the lid 10 is made of resin. Therefore, it can be manufactured by molding using a mold.

[0057] Figures 5 to 8 are diagrams illustrating the manufacturing method of the lid 10, and show the mold used in the manufacture of the lid 10. Figure 8 is a cross-sectional view of mold member 51 and mold member 54 in a superimposed state.

[0058] When manufacturing the lid 10 described above, as shown in Figure 5, first, the mold member 51 is fitted onto the substrate 50. The mold member 51 is an example of the first mold member in the present invention. The mold member 51 has a top plate portion 52 and a side portion 53.

[0059] The top plate portion 52 is disc-shaped. The outer diameter of the top plate portion 52 is the same as the diameter of the underside of the top surface portion 11 of the lid 10 (the diameter excluding the thickness of the side portion 12).

[0060] The side portion 53 is cylindrical and continuous with the periphery of the top plate portion 52. The side portion 53 is also provided with four pairs of recesses 53a and recesses 53b (only two pairs are shown in Figure 5). Each pair of recesses 53a and recesses 53b has a predetermined length in the circumferential direction of the side portion 53 and is provided at equal intervals in the circumferential direction of the side portion 53. Recess 53a is continuous with the periphery of the top plate portion 52 and has a depth from the outer surface of the side portion 53 equal to the thickness of the core pin 58 (see Figure 6), which will be described later. Recess 53b is continuous with the pair of recesses 53a on the opposite side from the top plate portion 52, and its depth from the outer surface of the side portion 53 is shallower than that of recess 53a. Furthermore, the boundary between the pair of recesses 53a and recesses 53b does not extend parallel to the top plate portion 52, but rather extends at an angle relative to the top plate portion 52. Specifically, the boundary between the pair of recesses 53a and 53b is inclined and extends clockwise from the top plate portion 52 as viewed from the top plate portion 52. The outer diameter of the area of ​​the side portion 53 where recesses 53a and 53b are not provided is the same as the inner diameter of the area of ​​the side portion 12 of the lid 10 where the projection 14 is not provided, and the depth of recess 53b is the same as the height of the projection 14. In addition, the height of the side portion 53 is the same as the height of the side portion 12 of the lid 10 excluding the thickness of the top surface portion 11. The mold member 51 configured in this way is for forming the inner circumferential surface of the side portion 12 of the lid 10 and the surface of the top surface portion 11 on the side portion 12 side.

[0061] After fitting the mold member 51 into the substrate 50, the mold member 54 is placed on the substrate 50 so as to cover the mold member 51, as shown in Figure 6.

[0062] The mold member 54 is an example of a second mold member in the present invention. The mold member 54 has a top plate portion 55 and a side portion 56.

[0063] The top plate portion 55 is disc-shaped and has a larger diameter than the top plate portion 52 of the mold member 51. The top plate portion 55 is provided with four holes 57. The four holes 57 are positioned opposite the recesses 53a of the mold member 51 when the mold member 54 is placed on the substrate 50 so as to cover the mold member 51. Therefore, the holes 57 are provided to form an arc along the periphery of the top plate portion 55, with the same length as the recesses 53a. Core pins 58, which will be described later, are fitted into the holes 57, and as a result, the top plate portion 55 is integrated with the core pins 58, and has a configuration that includes the core pins 58.

[0064] The side portion 56 is cylindrical and continuous with the periphery of the top plate portion 52. The inner diameter of the side portion 56 is the same as the outer diameter of the side portion 12 of the lid 10, and the height of the side portion 56, excluding the thickness of the top plate portion 55, is the same as the height of the side portion 12 of the lid 10. The mold member 54 configured in this way is for forming the outer circumferential surface of the side portion 12 of the lid 10 and the surface of the top plate portion 11 that is opposite to the side portion 12.

[0065] The top plate portion 55 and the side portion 56 configured in this way are connected to each other, and as a result, the mold member 54 has a shape in which one end of the cylindrical side portion 56 is closed by the top plate portion 55 and the other end is open.

[0066] Then, as described above, the mold member 54 is placed on the substrate 50 so as to cover the mold member 51. Specifically, the mold member 51 and the mold member 54 are superimposed so that the mold member 51 enters into the mold member 54 from the open side opposite to the top plate portion 55 of the mold member 54. Here, as described above, the top plate portion 55 of the mold member 54 is integrated with the core pin 58 by the fact that the core pin 58 is fitted into the hole portion 57. When the core pin 58 is fitted into the hole portion 57, it is separated from the inner circumferential surface of the side portion 56 by the thickness of the side portion 12 of the lid 10 and follows the inner circumferential surface of the side portion 56 of the mold member 54, protruding from the top plate portion 55 side by an amount corresponding to the height of the top surface portion 11 side of the projection 14. When the mold member 51 and the mold member 54 are superimposed, they are shaped to fill the recess 53a as shown in Figure 7. Figure 7 shows the relationship between the core pin 58 and the mold member 51, with the mold member 54 removed from the state shown in Figure 6.

[0067] After fitting the mold member 51 onto the substrate 50 in this manner, the mold member 51 and the mold member 54 are superimposed so that the mold member 51 fits inside the mold member 54, which has a top plate portion 55 integrated with the core pins 58.

[0068] Next, molten resin is injected into the gap between mold member 51 and mold member 54. As shown in Figure 8, the molten resin 59 flows into the gap between mold member 51 and mold member 54, and also into the recess 53b.

[0069] Then, after the molten resin 59 has solidified, the mold member 51 is first moved downward together with the substrate 50 to detach it from the mold member 54. As a result, the molded product formed by the solidification of the molten resin 59 also detaches from the mold member 54. Subsequently, the substrate 50 is moved to separate the molded product from the substrate 50 and the mold member 51.

[0070] As a result, the mold member 51, with its top plate portion 52 and side portion 53, forms the inner circumferential surface of the side portion 12 of the lid 10 and the surface of the top portion 11 that faces the side portion 12, and the mold member 54, with its top plate portion 55 and side portion 56, forms the outer circumferential surface of the side portion 12 of the lid 10 and the surface of the top portion 11 that faces the side portion 12, thereby forming the side portion 12 and the top portion 11 of the lid 10. Furthermore, the core pin 58 is positioned along the inner circumferential surface of the side portion 56, separated from the inner circumferential surface of the side portion 56 by the thickness of the side portion 12 of the lid 10, and along the inner circumferential surface of the side portion 56 of the mold member 54, protruding from the top plate portion 55 by an amount corresponding to the height of the surface of the projection 14 that faces the top portion 11, thereby forming the projection 14 on the inner surface of the side portion 12 of the lid 10 and forming the hole 13 in the top portion 11 of the lid 10. In other words, the forming holes 13 provided in the lid 10 are provided in correspondence with each of the multiple protrusions 14 provided in the lid 10, and are for the purpose of forming the protrusions 14.

[0071] In this way, a lid 10 having a projection 14 on the inner surface of the side portion 12 is manufactured.

[0072] As described above, when manufacturing the lid 10 by molding, the mold member 51 and the mold member 54 are superimposed so that the mold member 51 fits inside the mold member 54 which has a top plate portion 55 integrated with the core pin 58, and the protrusion 14 is formed using the core pin 58, making it easier to form the protrusion 14. As a result, a lid 10 having a protrusion 14 on the inner surface of the side portion 12 can be easily manufactured.

[0073] Furthermore, by attaching the lid 10 to the container body 20 so that the flange 24 fits between the top surface 11 and the projection 14, the container 1 shown in Figure 1 can be manufactured. In practice, however, the lid 10 is attached to the container body 20 after the contents such as cosmetics have been placed inside the container body 20.

[0074] <Usage of Container 1> The usage of Container 1 described above will be explained below.

[0075] Figure 9 shows an example of how container 1 shown in Figure 1 is used.

[0076] Container 1 shown in Figure 1 may also be used as a refill container.

[0077] When using the container 1 shown in Figure 1 as a refill container, as shown in Figure 9, the lid 10 is removed from the container 1 shown in Figure 1, and the container body 20 is detachably housed in the outer container 40. In this case, the container body 20 is housed through the opening 41 of the outer container 40, but the flange 24 may be placed on top of the mouth 42 of the outer container 40. This configuration prevents the container body 20 from going any further into the outer container 40.

[0078] Figure 10 shows another example of how container 1, as shown in Figure 1, can be used.

[0079] Container 1 shown in Figure 1 may also be used by placing it in a stationary container.

[0080] When the container 1 shown in Figure 1 is used in a stationary container, it is configured to be housed in the outer container 40, which serves as the stationary container, with the lid 10 attached, as shown in Figure 10. With this configuration, when the container 1 is housed in the outer container 40, it is used with the lid 10 removed. On the other hand, when the container body 20 is removed from the outer container 40 with the lid 10 attached, the container 1 can be carried and used.

[0081] (Other embodiments) Other embodiments of the lid 10 are described below.

[0082] Figure 11 shows another configuration example of the lid 10 shown in Figure 1, and is a view from diagonally below.

[0083] As shown in Figure 11, the lid 10 in this embodiment differs from the one shown in Figure 2 in that a packing 15 is not attached to the back surface of the top surface 11, and instead a protrusion 16 is provided on the back surface of the top surface 11 as an airtight structure.

[0084] The protrusion 16 is an example of an airtight portion in the present invention. The protrusion 16 projects downward from the top surface 11 and is formed in an annular shape along the periphery of the top surface 11. The outer diameter of the protrusion 16 is the same as the inner diameter of the end of the side surface 22 of the container body 20 on the opening 23 side. Furthermore, the height of the protrusion 16 is such that, as will be described later, when the flange 24 fits between the top surface 11 and the projection 14, the tip of the protrusion 16 is positioned closer to the bottom 21 than the protrusion 25 of the container body 20.

[0085] Figure 12 is a diagram illustrating the state in which the lid 10 shown in Figure 11 is attached to the container body 20, and is a cross-sectional view corresponding to Figure 4.

[0086] As shown in Figure 12, the lid 10 shown in Figure 11 is attached to close the opening 23 of the container body 20, similar to the lid 10 shown in Figure 2.

[0087] In this case, first, the opening 23 of the container body 20 is brought into contact with the surface of the top surface 11 of the lid 10 where the protrusion 16 is located, and the four flange portions 24 are each inserted between two projections 14. Then, by rotating the lid 10, the flange portions 24 can be inserted between the top surface 11 and the projections 14, as shown in Figure 10.

[0088] As described above, the outer diameter of the protrusion 16 on the lid 10 is the same as the inner diameter of the end of the side portion 22 of the container body 20 on the opening 23 side. Furthermore, the height of the protrusion 16 on the lid 10 is such that when the flange portion 24 fits between the top surface 11 and the projection 14, the tip of the protrusion 16 is positioned closer to the bottom 21 than the protrusion 25 of the container body 20. As a result, when the flange portion 24 fits between the top surface 11 and the projection 14, the protrusion 16 fits inside the side portion 22 of the container body 20 and comes into contact with the inner surface of the side portion 22 of the container body 20 all around.

[0089] In this way, the protrusion 16 provided on the lid 10 abuts against the inner surface of the side portion 22 of the container body 20 all around, thereby maintaining airtightness between the container body 20 and the lid 10. As mentioned above, the outer diameter of the protrusion 16 provided on the lid 10 is the same as the inner diameter of the end of the side portion 22 of the container body 20 on the opening 23 side. Therefore, the tip of the protrusion 16 may be formed at an angle to reduce its outer diameter, allowing the protrusion 16 to easily fit inside the side portion 22 of the container body 20. [Explanation of Symbols]

[0090] 1 container 10 Lid 11 Top section 12,22,53,56 Side part 13 Formation hole 14 protrusions 15 Gasket 16,25 Convex part 17 Ribs 20 Container body 21 Bottom 23,41 aperture 24 Guard section 40 Outer container 42 Mouth 50 circuit boards 51, 54 type members 52, 55 Top panel 53a, 53b recess 57 Hole 58 core pins 59 Molten resin

Claims

1. A cylindrical first member, A plate-shaped second member is disposed in contact with the first end, which is one end of the first member, It comprises one or more third members that protrude from the inner circumferential surface of the first member, The second member has one or more openings formed at positions corresponding to each of the one or more third members, A structure in which each of the one or more third members is positioned such that at least a portion of it is located away from the first end and has a gap in the circumferential direction of the inner surface.

2. The structure according to claim 1, further comprising a fourth member disposed on the inner circumferential surface of the first member at a position corresponding to each of the one or more third members.

3. A structure for closing the opening of a container body, the container body having an open end and a flange portion that extends radially outward at the open end, A cylindrical first member, A plate-shaped second member is disposed in contact with the first end, which is one end of the first member, It comprises one or more third members that protrude from the inner circumferential surface of the first member, The second member has one or more openings formed at positions corresponding to each of the one or more third members, A structure in which each of the one or more third members is positioned such that at least a portion of it is away from the first end so that the flange portion fits between it and the second member, and is arranged so as to have a gap in the circumferential direction of the inner surface.

4. A container body having one end open and a flange portion that widens radially outward at the open end, It has a structure that closes the opening, The aforementioned structure is A cylindrical first member, A plate-shaped second member is disposed in contact with the first end, which is one end of the first member, It comprises one or more third members that protrude from the inner circumferential surface of the first member, A container in which each of the one or more third members is positioned such that at least a portion of it is away from the first end so that the flange portion fits between it and the second member, and there is a gap in the circumferential direction of the inner surface.

5. The container according to claim 4, wherein the second member has one or more openings formed at positions corresponding to each of the one or more third members.

6. The container according to claim 4, wherein the container body is configured to be detachably attached to the outer container.

7. The container according to claim 4, wherein the container body is housed in an outer container with the opening closed by the structure.

8. The container body is configured to be housed in the outer container, The container according to claim 4, wherein the flange portion is placed on the upper surface of the mouth of the outer container when the container body is housed in the outer container.

9. A method for manufacturing the structure described in claim 1, A first mold member for forming the inner circumferential surface of the first member and the surface of the second member on the side facing the first member, The first member has a cylindrical shape with one end closed and the other end open, and a core pin for forming the third member is provided, which is located away from the inner surface of the cylindrical shape by the thickness of the first member and along the inner surface of the cylindrical shape, and protrudes from the one end to the other end by an amount corresponding to the height of the surface of the third member on the second member side, and a second mold member for forming the outer surface of the first member and the surface of the second member opposite to the first member, A step of overlapping the first mold member and the second mold member such that the first mold member enters from the other end of the second mold member, A step of injecting molten resin between the first mold member and the second mold member, A method for manufacturing a structure, comprising the step of separating the first mold member and the second mold member.

10. A method for manufacturing a container according to claim 5, A first mold member for forming the inner circumferential surface of the first member and the surface of the second member on the side facing the first member, The first member has a cylindrical shape with one end closed and the other end open, and a core pin for forming the third member is provided, which is located away from the inner surface of the cylindrical shape by the thickness of the first member and along the inner surface of the cylindrical shape, and protrudes from the one end to the other end by an amount corresponding to the height of the surface of the third member on the second member side, and a second mold member for forming the outer surface of the first member and the surface of the second member opposite to the first member, A step of overlapping the first mold member and the second mold member such that the first mold member enters from the other end of the second mold member, A step of injecting molten resin between the first mold member and the second mold member, A step of separating the first mold member and the second mold member, A method for manufacturing a container, comprising the step of attaching the structure to the container body such that the flange portion fits between the second member and each of the one or more third members.

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