Container with cap

Abstract

To provide a container with a cap capable of further improving usability by improving operability of a cap unit when opening and closing an upper opening of a container body.SOLUTION: A container body 2 has a configuration in which an outer container 4 and an inner container 5 made of metal with one end open are included, and joined to each other in a state in which the inner container 5 is stored inside the outer container 4, and a vacuum insulation layer 6 is provided between the outer container 4 and the inner container 5. A peripheral edge part 20 is provided around an upper opening of the container body 2, a cap unit 3A has a cap body 15 that is screwed onto the container body 2 while covering the upper opening of the container body 2, the cap body 15 has a contact part 21 that comes into contact with the peripheral edge part 20 in a state of being attached to the container body 2, and the contact part 21 is provided to protrude from a position facing the peripheral edge part 20 of the cap body 15.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a container with a cap.

Background Art

[0002] Conventionally, there has been a container with a cap provided with a cap unit (plug body) that closes the upper opening of a container body by being detachably attached to the mouth-neck part of the container body with an open upper part (for example, refer to Patent Document 1 below).

[0003] Such a cap unit has an outer lid that covers the upper opening of the container body and an inner stopper that is fitted into the container body from the upper opening, and the inner stopper or the outer lid is attached to the cap body by screwing. Further, a water-stopping packing (sealing member) that seals between the container body and the inner stopper is detachably attached to the outer peripheral part of the inner stopper.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] By the way, in the beverage container described in Patent Document 1 below, for example, it has a drinking mouth in which a mouth part body made of silicone rubber is fitted to the opening of the container body from the outside, and an inner stopper part is attached to the inside of the container body by screwing while turning the plug body. When the lid part covers this drinking mouth, the lower end of the wall part forming the lid part abuts against a step part formed in a circumferential shape on the outer peripheral surface of the mouth part body, and the space between the drinking mouth and the lid part is sealed.

[0006] In this configuration, if the stopper is turned too far in the closing direction, the lower end of the lid, which is in contact with the stepped portion of the mouth body, will become embedded in the stepped portion. Consequently, if the stopper is tightened too much, it can be difficult to remove the stopper from the container body by turning it in the opening direction.

[0007] This invention has been proposed in view of the above conventional circumstances, and aims to provide a capped container that enables further improvements in usability by improving the operability of the cap unit when opening and closing the upper opening of the container body. [Means for solving the problem]

[0008] To achieve the above objective, the present invention provides the following means. [1] A container body with an open top, The container body is equipped with a cap unit that can be detachably attached to it, The container body has a metal outer container and an inner container with one end open, and the inner container is housed inside the outer container and joined to each other, and a vacuum insulation layer is provided between the outer container and the inner container. Around the upper opening of the container body , including the upper end of the container body A peripheral edge is provided, The cap unit has a cap body that is attached to the container body by screwing it in, covering the upper opening of the container body. The cap body, when attached to the container body, has a contact portion that contacts the peripheral edge, The contact portion protrudes integrally with the cap body from a position facing the peripheral edge of the cap body. Furthermore, the radial width is wider than the area in contact with the peripheral edge. Established, The peripheral edge The aforementioned contact portion A container with a cap, characterized in that the position of the cap body being attached to the container body by screwing is restricted by contact. [2] The container with a cap according to [1], characterized in that a plurality of contact portions are provided in a row at positions facing the peripheral edge of the cap body. [3] The container with a cap according to [1], characterized in that the contact portion is provided around the entire circumference of the cap body at a position opposite to the peripheral edge portion. [4] The capped container according to any one of [1] to [3], characterized in that the peripheral edge is made up of a portion that is bent outward from the inner container. [5] The cap body comprises an outer lid that covers the upper opening of the container body and an inner stopper located in the center of the inside of the outer lid and fitted into the inside of the container body from the upper opening. A capped container according to any one of the above [1] to [4], characterized in that the inner stopper or the outer lid is attached to the container body by screwing. [6] The capped container according to [5], characterized in that a sealing member for sealing the space between the inside of the container body and the inner stopper is detachably attached to the outer circumference of the inner stopper. [Effects of the Invention]

[0009] As described above, according to the present invention, it is possible to provide a capped container that offers further improvements in usability by improving the operability of the cap unit when opening and closing the upper opening of the container body. [Brief explanation of the drawing]

[0010] [Figure 1] This is a cross-sectional view showing the configuration of a capped container according to the first embodiment of the present invention. [Figure 2] This is a cross-sectional view showing a magnified portion of the container body indicated by the enclosed area A in Figure 1. [Figure 3] Figure 1 is a perspective view of the cap unit as seen from below. [Figure 4] Figure 1 is a plan view of the cap unit as seen from below. [Figure 5]It is a cross-sectional view showing the configuration of the container with a cap according to the second embodiment of the present invention. [Figure 6] It is a perspective view of the cap unit shown in FIG. 5 as seen from the lower side. [Figure 7] It is a plan view of the cap unit shown in FIG. 5 as seen from the lower side. [Figure 8] It is a cross-sectional view showing another configuration example of the peripheral edge provided on the container body.

Mode for Carrying Out the Invention

[0011] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. (First Embodiment) First, as a first embodiment of the present invention, for example, a container 1A with a cap shown in FIGS. 1 to 4 will be described. Note that FIG. 1 is a cross-sectional view showing the configuration of the container 1A with a cap. FIG. 2 is an enlarged cross-sectional view showing a part of the container body 2 shown in the surrounded portion A in FIG. 1. FIG. 3 is a perspective view of the cap unit 3A as seen from the lower side. FIG. 4 is a plan view of the cap unit 3A as seen from the lower side.

[0012] As shown in FIGS. 1 and 2, the container 1A with a cap of the present embodiment includes a container body 2 with an open upper part and a cap unit 3A detachably attached to the container body 2, and is a beverage container capable of keeping warm or cold the beverage (contents) stored in the container body 2. Further, in the container 1A with a cap, the upper opening 2a of the container body 2 can be opened and closed by the cap unit 3A attached to the container body 2 by screwing.

[0013] Specifically, the container body 2 has, for example, a metal outer container 4 made of stainless steel or the like and an inner container 5. The container body 2 is joined to each other in a state where the inner container 5 with one end (hereinafter referred to as the "open end") 5a opened is accommodated inside the outer container 4 with one end (hereinafter referred to as the "open end") 4a opened, and has a vacuum insulation structure in which a vacuum insulation layer 6 is provided between the outer container 4 and the inner container 5.

[0014] The vacuum insulation layer 6 can be formed, for example, by sealing a degassing hole provided in the center of the bottom surface of the outer container 4 with a brazing material in a chamber that has been reduced to a high vacuum (vacuumed).

[0015] The container body 2, by having such a vacuum insulation structure, is able to provide the aforementioned functions of heat retention and cold retention. Furthermore, because the container body 2 has such a vacuum insulation structure, tension is constantly applied to the outer container 4 and inner container 5 due to the difference between the internal pressure (vacuum pressure) and the external pressure (atmospheric pressure), which increases the mechanical strength of the outer container 4 and inner container 5. As a result, even if the thickness of the outer container 4 and inner container 5 is reduced, the rigidity of the container body 2 can be increased, and the weight of the container body 2 can be reduced.

[0016] The container body 2 has a roughly circular bottom portion 2b, a roughly cylindrical body portion 2c rising from the outer circumference of the bottom portion 2b, a shoulder portion 2d that gradually narrows in diameter at the upper side of the body portion 2c, and a roughly cylindrical neck portion 2e rising from the shoulder portion 2d. The upper end of the neck portion 2e is circular and forms the upper opening 2a of the container body 2.

[0017] A female screw portion 7 is provided on the inner circumferential surface of the mouth / neck portion 2e. Furthermore, below the female screw portion 7, a ring-shaped protrusion 8 is provided, projecting from the inner circumferential surface of the inner container 5 around its entire circumference.

[0018] Although the capped container 1A of this embodiment has a generally cylindrical external shape, the external shape of the capped container 1A is not particularly limited and can be modified as appropriate to suit the size, design, etc. Furthermore, the outer surface of the container body 2 (outer container 4) may be painted or printed.

[0019] As shown in Figure 2, the container body 2 has an outer joining end 9 and an inner joining end 10 that are joined to each other at the abutting portions (hereinafter referred to as "butting portions") 4b and 5b between the outer container 4 and the inner container 5.

[0020] The outer joint end 9 includes a straight portion 11 that extends upward from the open end 4a of the outer container 4. The straight portion 11 is formed in a straight line in the vertical direction in cross-sectional view, along the outer surface of the mouth neck portion 2e. Furthermore, the open end 4a of the outer container 4 and the abutment portion 4b coincide at the outer joint end 9.

[0021] The inner joint end 10 includes a curved portion 12 formed by bending the open end 5a of the inner container 5 outward and folding it downward, and a flat portion 12a formed by flattening a part of the curved portion 12.

[0022] The curved portion 12 is bent and curved so that the open end 5a of the inner container 5 is positioned between the inner surface of the outer joint end 9 (outer container 4) and the outer surface of the inner joint end 10 (inner container 5).

[0023] At the inner joint end 10, if the open end 5a of the inner container 5 is in contact with the inner surface of the outer joint end 9 (outer container 4), it becomes impossible to fit the inner container 5 into the outer container 4, or the shape of the inner joint end 10 changes, which is undesirable. On the other hand, if the open end 5a of the inner container 5 is in contact with the outer surface of the inner joint end 10 (inner container 5), the shape of the curved portion 12 changes when forming the flat portion 12a, and a pleasant rounded shape cannot be obtained, which is also undesirable.

[0024] The flat portion 12a is formed by flattening a part of the curved portion 12 so that it is parallel to the straight portion 11. By providing such a flat portion 12a at the inner joint end 10, it is possible to increase the contact area between the straight portion 11 and the curved portion 12.

[0025] In the container body 2, the inner surface of the straight section 11 and the outer surface of the curved section 12, including the flat section 12a, are butted together, and the abutting sections 4b and 5b of the outer joining end 9 and the inner joining end 10 are joined. A welding method such as laser welding is used to join the outer joining end 9 and the inner joining end 10.

[0026] In the container body 2, the upper opening 2a is formed by the upper end portion 5c of the inner container 5. Furthermore, the upper end portion 5c of the inner container 5 is formed by a part of the curved portion 12 described above. In this embodiment, the upper end portion 5c of the inner container 5 is positioned above the abutment portion 5b, but it is also possible for the upper end portion 5c of the inner container 5 to coincide with the abutment portion 5b.

[0027] Furthermore, Figure 2 shows the abutting portion (boundary) between the outer joint end 9 and the inner joint end 10. After joining, this abutting portion melts due to welding, forming a weld bead around the entire circumference of the abutting portions 4b and 5b between the outer joint end 9 and the inner joint end 10. This weld bead is then finished to a smooth surface by grinding and polishing after the welding process.

[0028] Furthermore, the inner surface of the inner container 5 is provided with a tapered portion 13 that gradually widens in diameter towards the abutment portion 5b. The tapered portion 13 is provided from above the female screw portion 7 along the inner surface of the neck portion 5e, and is inclined from the upper end of a straight portion 14 that is formed in a straight line in the vertical direction in a cross-sectional view toward the abutment portion 5b. As a result, the container body 2 can provide a good mouthfeel and a pleasant drinking experience when drinking beverages by directly putting the mouth to the neck portion 2e.

[0029] In the container body 2, the outer joint end 9 and the inner joint end 10 described above can be joined with high precision, and a well-finished joint end can be obtained. Therefore, in this container body 2, when drinking beverages by directly putting the mouth to the neck 2e, smooth flow of the beverage is possible, and a good drinking experience can be obtained.

[0030] Furthermore, the container body 2 allows for simplification of the manufacturing process and reduction of manufacturing costs while preventing the welding bead from becoming too large. In addition, by reducing the thickness of the outer container 4 and inner container 5, it is possible to lighten the container body 2 and improve its heat insulation performance.

[0031] As shown in Figure 1, the cap unit 3A constitutes a stopper that closes the upper opening 2a of the container body 2. Specifically, this cap unit 3A includes a cap body 15 that is attached to the container body 2 by screwing, covering the upper opening 2a of the container body 2.

[0032] The cap body 15 has an outer lid 16 that covers the upper opening 2a of the container body 2, and an inner stopper 17 that is fitted into the inside of the container body 2 from the upper opening 2a.

[0033] The outer lid 16 is made of a heat-resistant resin such as polypropylene, and has a peripheral wall portion 16a formed in a substantially cylindrical shape so as to be continuous with the body portion 2c of the container body 2, and an upper wall portion 16b that closes the upper part of the peripheral wall portion 16a.

[0034] The inner plug 17 is made of a heat-resistant resin such as polypropylene. The inner plug 17 has a bottomed, approximately cylindrical shape and is integrally attached to the center of the lower surface of the upper wall portion 16b by welding or the like. As a result, the inner plug 17 is located in the center of the inside of the outer lid 16. The interior of the inner plug 17 may be configured with an insulating material S, rather than just air as an insulating layer.

[0035] Furthermore, a male threaded portion 18 is provided on the outer surface of the inner stopper 17. In the capped container 1A, the inner stopper 17 (cap body 15) is detachably attached to the container body 2 by screwing the male threaded portion 18 and the female threaded portion 7 together. Moreover, the female threaded portion 7 and the male threaded portion 18 are double-threaded, complementary shapes. When double-threaded threads are used, the cap body 15 (cap unit 3A) can be attached to and detached from the container body 2 with minimal rotation (approximately 180° in this embodiment).

[0036] A water-sealing packing 19 is detachably attached to the outer circumference of the inner stopper 17. The water-sealing packing 19 is a ring-shaped sealing member that seals the space between the inside of the container body 2 and the inner stopper 17, and is made of an elastic material such as heat-resistant rubber such as silicone rubber or elastomer.

[0037] On the other hand, a flange portion 17a is provided at the lower end of the inner plug 17, protruding in the expanding diameter direction. The water-stopping packing 19 is fitted around this flange portion 17a.

[0038] Furthermore, two elastic flange portions 19a are provided on the outer circumferential surface of the water-sealing packing 19, protruding in the expanding radial direction. When the cap body 15 is attached to the container body 2, the elastic flange portions 19a of the water-sealing packing 19 elastically deform, causing it to tightly adhere to the protruding portion 8 of the container body 2 around its entire circumference. This makes it possible to seal (stop water) the space between the protruding portion 8 (container body 2) and the inner stopper 17 (cap body 15).

[0039] On the other hand, the water-sealing packing 19 can be removed from the flange portion 17a by elastically deforming (stretching) it. This allows the cap body 15 and the water-sealing packing 19 to be cleaned separately, and the space between the water-sealing packing 19 and the flange portion 17a can be kept hygienic.

[0040] Furthermore, the water-sealing packing 19 is not necessarily limited to the shape described above. For example, the number of elastic flange portions 19a is not limited to the two described above; it can be one or more. Also, the water-sealing packing 19 is not necessarily limited to the configuration in which the elastic flange portions 19a described above are provided, and its shape and other aspects can be modified as appropriate.

[0041] In the capped container 1A of this embodiment, which has the above configuration, the cap unit 3A can be attached to the container body 2 by screwing the female screw portion 7 and the male screw portion 18 together, starting from a state where the inner stopper 17 is fitted inside the container body 2 through the upper opening 2a, and then rotating the outer lid 16 (cap body 15) clockwise (hereinafter referred to as the "closing direction") relative to the container body 2.

[0042] On the other hand, with the cap body 15 (cap unit 3A) attached to the container body 2, the outer lid 16 (cap body 15) can be rotated counterclockwise (hereinafter referred to as the "opening direction") relative to the container body 2 to release the screw engagement between the female screw portion 7 and the male screw portion 18, thereby allowing the cap unit 3A to be removed from the container body 2.

[0043] Incidentally, the capped container 1A of this embodiment has a peripheral edge portion 20 around the upper opening 2a on the container body 2 side, and a plurality of (four in this embodiment) contact portions 21 on the cap body 15 side at positions opposite to the peripheral edge portion 20.

[0044] As shown in Figure 2, the peripheral portion 20 is composed of the outwardly bent portion of the inner container 5 described above, i.e., a part of the curved portion 12. In this embodiment, the peripheral portion 20, including the upper end portion 5c of the inner container 5, is provided around the entire circumference of the upper opening 2a. Furthermore, the peripheral portion 20 is composed of an upwardly convex curved surface or a flat surface.

[0045] On the other hand, as shown in Figures 3 and 4, the multiple contact portions 21 are located between the peripheral wall portion 16a of the outer cover 16 and the inner stopper 17, and are provided protruding from the lower surface of the upper wall portion 16b. Furthermore, the multiple contact portions 21 are arranged at equal intervals in the circumferential direction of the cap body 15.

[0046] In the capped container 1A of this embodiment, which has the configuration described above, as shown in Figure 1, when the cap unit 3A is attached to the container body 2, multiple contact parts 21 are in contact with the peripheral edge 20.

[0047] In this case, once the multiple contact portions 21 come into contact with the peripheral portion 20, the cap body 15 can no longer be rotated in the closing direction relative to the container body 2, thereby restricting the screw-on mounting position of the cap unit 3A relative to the container body 2. This prevents excessive tightening of the cap unit 3A by rotating the cap body 15 too far in the closing direction.

[0048] On the other hand, if the lower end of the peripheral wall portion 16a forming the outer lid 16 contacts the shoulder portion 2d of the container body 2 before the multiple contact portions 21 contact the peripheral edge portion 20 of the container body 2, then when the cap body 15 is turned too far in the closing direction relative to the container body 2, the lower end of the outer lid 16 will be pressed against the shoulder portion 2d of the container body 2.

[0049] In this case, since the shoulder portion 2d of the container body 2 has a tapered shape, the cap body 15 can be further rotated in the closing direction relative to the container body 2 while deforming the peripheral wall portion 16a of the outer lid 16 in the expanding direction. Therefore, it becomes difficult to restrict the mounting position of the cap unit 3A by screwing it onto the container body 2. Also, if the cap unit 3A is overtightened, the torque required to release the tightening increases, which may make it difficult to rotate the cap body 15 in the opening direction. Furthermore, if the lower end of the outer lid 16 comes into contact with the shoulder portion 2d of the container body 2, there is a risk that the paint or printing on the outer surface of the container body 2 may be scratched and damaged by the lower end of the outer lid 16.

[0050] In contrast, in the capped container 1A of this embodiment, the multiple contact points 21 come into contact with the peripheral edge 20 before the lower end of the outer lid 16 comes into contact with the shoulder 2d of the container body 2. This prevents the lower end of the outer lid 16 from being pressed against the shoulder 2d of the container body 2.

[0051] In the capped container 1A of this embodiment, when the multiple contact portions 21 are in contact with the peripheral portion 20 described above, a gap is formed between the lower end of the outer lid 16 and the shoulder portion 2d of the container body 2. However, the lower end of the outer lid 16 may be configured to contact the shoulder portion 2d of the container body 2 to an extent that it is not pressed against it.

[0052] Furthermore, in the capped container 1A of this embodiment, when attaching or removing the cap unit 3A from the container body 2, multiple contact parts 21 slide against the peripheral edge 20. Since the multiple contact parts 21 do not slide against the peripheral edge 20 all the way around, the resistance when these multiple contact parts 21 slide against the peripheral edge 20 is reduced, making it easier to rotate the cap unit 3A.

[0053] On the other hand, when the upper ends of the outer container and the inner container are joined by welding (so-called "pray weld") with the inner surface of the outer container and the outer surface of the inner container butted together, the pointed upper end of the container body is prone to biting into the opposing surface of the cap body. Therefore, if the cap unit is overtightened, the torque required to release this tightening increases, making it difficult to rotate the cap body in the opening direction. In addition, a gasket made of an elastic material such as silicone resin is required to prevent the upper end from being overtightened.

[0054] In contrast, in the cap-equipped container 1A of this embodiment, a plurality of contact portions 21 protruding from the surface of the cap body 15 facing the peripheral edge 20 are in contact with the peripheral edge 20 formed by the outwardly bent portion of the inner container 5 described above. In this case, since a peripheral edge 20 wider than that of a blind weld is formed at the upper end of the container body 2 described above, it is possible to prevent this peripheral edge 20 from digging into the opposing surface of the cap body 15. Furthermore, it becomes unnecessary to provide a separate part such as a gasket to prevent digging into the cap body 15.

[0055] As described above, in the capped container 1A of this embodiment, further improvements in usability can be achieved by improving the operability of the cap unit 3A when opening and closing the upper opening 2a of the container body 2.

[0056] (Second embodiment) Next, as a second embodiment of the present invention, a capped container 1B shown in Figures 5 to 7 will be described. Figure 5 is a cross-sectional view showing the configuration of the capped container 1B. Figure 6 is a perspective view of the cap unit 3B from below. Figure 7 is a plan view of the cap unit 3B from below. In the following description, parts equivalent to those of the capped container 1A will not be described, and the same reference numerals will be used in the drawings.

[0057] As shown in Figure 5, the capped container 1B of this embodiment has a configuration in which, instead of having the cap unit 3A described above, it is equipped with a cap unit 3B that can be detachably attached to the container body 2.

[0058] Specifically, as shown in Figures 6 and 7, this cap unit 3B has a contact portion 22 at a position opposite the peripheral edge 20 of the cap body 15, instead of the multiple contact portions 21.

[0059] The contact portion 22 is located between the peripheral wall portion 16b of the outer cover 16 and the inner plug 17, and is provided on the lower surface of the upper wall portion 16b around its entire circumference. Otherwise, it has basically the same configuration as the cap unit 3A described above.

[0060] In the capped container 1B of this embodiment, which has the configuration described above, as shown in Figure 5, when the cap unit 3B is attached to the container body 2, the contact portion 22 is in contact with the peripheral edge portion 20.

[0061] In this case, once the contact portion 22 contacts the peripheral portion 20, the cap body 15 cannot be rotated any further in the closing direction relative to the container body 2, thereby restricting the screw-fit mounting position of the cap unit 3B relative to the container body 2. This prevents excessive tightening of the cap unit 3B by rotating the cap body 15 too far in the closing direction.

[0062] Furthermore, in the capped container 1B of this embodiment, the contact portion 22 contacts the peripheral edge 20 before the lower end of the outer lid 16 contacts the shoulder portion 2d of the container body 2. This prevents the lower end of the outer lid 16 from being pressed against the shoulder portion 2d of the container body 2.

[0063] In the capped container 1B of this embodiment, when the contact portion 22 is in contact with the peripheral portion 20 described above, a gap is formed between the lower end of the outer lid 16 and the shoulder portion 2d of the container body 2. However, the lower end of the outer lid 16 may be configured to contact the shoulder portion 2d of the container body 2 to an extent that it is not pressed against it.

[0064] Furthermore, in the cap-equipped container 1B of this embodiment, the contact portion 22, which is provided around the entire circumference of the surface of the cap body 15 facing the peripheral edge 20 formed by the outwardly bent portion of the inner container 5 described above, is in contact with the peripheral edge 20 formed by the outwardly bent portion of the inner container 5 described above. In this case, since a peripheral edge 20 that is wider than that of a blind weld is formed at the upper end of the container body 2 described above, it is possible to prevent this peripheral edge 20 from digging into the opposing surface of the cap body 15. In addition, it becomes unnecessary to provide a separate part such as a gasket to prevent digging into the cap body 15.

[0065] As described above, in the capped container 1B of this embodiment, further improvements in usability can be achieved by improving the operability of the cap unit 3B when opening and closing the upper opening 2a of the container body 2.

[0066] It should be noted that the present invention is not necessarily limited to the embodiments described above, and various modifications can be made without departing from the spirit of the invention. For example, the container body 2 is not necessarily limited to the configuration having the peripheral edge portion 20 described above, but may also have a configuration having a peripheral edge portion 23 as shown in Figure 8.

[0067] The peripheral edge 23 is formed by a portion of the inner container 5 that is bent outward. Specifically, the open end 5a of the inner container 5 is bent in a curve toward the open end 4a of the outer container 4, so that it protrudes in a ring shape in the expanding diameter direction from the upper end of the inner container 5. As a result, the peripheral edge 23 is provided around the entire circumference of the upper opening 2a.

[0068] In the container body 2, the open end 4a of the outer container 4 is butted against the lower surface of the open end 5a of the inner container 5, and the open ends 4a and 5a are joined together. A welding method such as laser welding is used to join these open ends 4a and 5a together.

[0069] Furthermore, the inner container 5 is formed by a drawing process, during which a flange retaining flange is generated around the open end 5a. Normally, when welding the outer container 4 and the inner container 5 by bend welding, the flange retaining flange generated on the inner container 5 is cut off, and then the inner surface of the outer container and the outer surface of the inner container are butted together, and their open ends are welded to each other.

[0070] In contrast, in this embodiment, the flange retaining flange that forms on the inner container 5 can be used as the peripheral edge portion 23 without being cut. This not only eliminates the need to cut the flange retaining flange, but also improves the material yield of the inner container 5, thereby reducing manufacturing costs.

[0071] In Figure 8, the butt joint (boundary) between the outer container 4 and the inner container 5 is shown. After joining, this butt joint melts due to welding, forming a weld bead around the entire circumference of the welded area. This weld bead is then smoothed by grinding and polishing after the welding process.

[0072] Furthermore, while the cap units 3A and 3B are configured such that the inner stopper 17 is attached to the container body 2 by screwing it in while it is fitted inside the upper opening 2a of the container body 2, the configuration is not necessarily limited to this. For example, the cap units 3A and 3B may be configured such that the outer lid 16 is attached to the container body 2 by screwing it in while it covers the upper opening 2a of the container body 2.

[0073] In this configuration, instead of the female thread portion 7 and male thread portion 18 described above, the outer lid 16 (cap body 15) can be detachably attached to the container body 2 by screwing together the male thread portion provided on the outer circumferential surface of the mouth neck portion 2e and the female thread portion provided on the inner circumferential surface of the peripheral wall portion 16a that constitutes the outer lid 16.

[0074] Furthermore, while the cap units 3A and 3B described above are configured to directly open and close the upper opening 2a of the container body 2, the configuration is not necessarily limited to this. For example, a lid may be attached to a cap body attached to the container body 2 in a manner that allows it to be opened and closed. Moreover, the lid is not limited to being attached to the cap body by screws, but may also be rotatably attached to the cap body via a hinge.

[0075] In the above embodiment, the present invention is illustrated as being applied to a beverage container that has heat retention and cooling functions due to the container body 2 having the vacuum insulation structure described above. However, the present invention can be broadly applied to a capped container that comprises a container body and a cap unit that can be detachably attached to the container body. [Explanation of Symbols]

[0076] 1A, 1B… Container with cap 2… Container body 2a… Top opening 3A, 3B… Cap unit 4… Outer container 5… Inner container 6… Vacuum insulation layer 7… Female threaded section 8… Protruding section 9… Outer joint end 10… Inner joint end 11… Straight section 12… Curved section 12a… Flat section 13… Tapered section 14… Straight section 15… Cap body 16… Outer lid 17… Inner stopper 18… Male threaded section 19… Water-stopping packing (sealing member) 20… Peripheral edge 21, 22… Contact section 23… Peripheral edge

Claims

1. A container body with an open top, The container body is equipped with a cap unit that can be detachably attached to it, The container body has a metal outer container and an inner container with one end open, and the inner container is housed inside the outer container and joined to each other, and a vacuum insulation layer is provided between the outer container and the inner container. A peripheral edge is provided around the upper opening of the container body, including the upper end of the container body. The cap unit has a cap body that is attached to the container body by screwing it in, covering the upper opening of the container body. The cap body, when attached to the container body, has a contact portion that contacts the peripheral edge, The contact portion protrudes integrally with the cap body from a position opposite the peripheral edge of the cap body, and is provided to be wider in the radial direction than the area in contact with the peripheral edge. A container with a cap, characterized in that the contact portion abuts against the peripheral edge, thereby restricting the mounting position of the cap body by screwing it onto the container body.

2. The container with a cap according to claim 1, characterized in that a plurality of contact portions are provided in a row at positions facing the peripheral edge of the cap body.

3. The container with a cap according to claim 1, characterized in that the contact portion is provided around the entire circumference of the cap body at a position opposite to the peripheral edge portion.

4. The capped container according to any one of claims 1 to 3, characterized in that the peripheral edge is composed of a portion that is bent outward from the inner container.

5. The cap body comprises an outer lid that covers the upper opening of the container body, and an inner stopper located in the center of the inside of the outer lid and fitted into the inside of the container body through the upper opening. A capped container according to any one of claims 1 to 4, characterized in that the inner stopper or the outer lid is attached to the container body by screwing.

6. The container with a cap according to claim 5, characterized in that a sealing member for sealing the space between the inside of the container body and the inner stopper is detachably attached to the outer circumference of the inner stopper.

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