Lidded container

Abstract

The present application provides a container with a lid that can improve the operability of the lid unit when opening and closing the upper opening of the container body, thereby improving the convenience of further use. The container body (2) has a metal outer container (4) with one end open and an inner container (5) received inside the outer container (4), and the two are joined together in a configuration in which a vacuum insulation layer (6) is provided between the outer container (4) and the inner container (5). A peripheral portion (20) is provided around the upper opening of the container body, and the lid unit (3A) has a lid body (15) that is installed on the container body (2) by screw fitting in a state of covering the upper opening of the container body (2). The lid body (15) has an abutting portion (21) that abuts against the peripheral portion (20) in the state of being installed on the container body, and the abutting portion is protrusively provided from a position opposite the peripheral portion of the lid body.

Description

[0001] This application is a divisional application of the application filed on May 19, 2020, with application number 202010423951.5 and invention title "Lid Container". Technical Field

[0002] This invention relates to containers with lids. Background Technology

[0003] There have always been covered containers (see, for example, Patent Document 1 below) that have a cap unit (plug) that can be freely installed on the neck of the container body with an upper opening to seal the upper opening of the container body.

[0004] Such a cover unit has the following structure: an outer cover covering the upper opening of the container body and an inner plug inserted into the inner side of the container body from the upper opening, with either the inner plug or the outer cover being screwed onto the cover body. Additionally, a water-stop gasket (sealing component) is installed on the outer periphery of the inner plug in a manner that allows for easy installation and removal, sealing the space between the container body and the inner plug.

[0005] Patent Document 1: Japanese Patent Application Publication No. 2010-280402

[0006] However, in the beverage container described in Patent Document 1 below, for example, it has the following structure: a drinking spout made of silicone rubber is fitted from the outside into the opening of the container body. When the cap covers the drinking spout by rotating the plug and screwing the inner plug onto the inside of the container body, the lower end of the cap wall abuts against the step portion formed in a circumferential manner on the outer peripheral surface of the spout body, thus sealing the drinking spout and the cap.

[0007] In this configuration, if the stopper is rotated excessively in the closing direction, the lower end of the cap, which abuts against the stepped portion of the main body of the opening, is engaged with the stepped portion. Therefore, the stopper is strongly secured, making it sometimes difficult to rotate it in the opening direction when removing it from the container body. Summary of the Invention

[0008] The present invention was made in view of the existing situation, and its object is to provide a covered container that can further improve the convenience of use by improving the operability of the cover unit when opening and closing the upper opening of the container body.

[0009] To achieve the above objectives, the present invention provides the following means.

[0010] A lidded container, characterized in that it comprises: a container body with an opening at the top; and a lid unit, which is detachably mounted on the container body. The container body has a structure in which a metal outer container with one end open and an inner container are joined together in a state where the inner container is housed inside the outer container, and a vacuum insulation layer is provided between the outer container and the inner container. A peripheral portion is provided around the opening at the top of the container body. The lid unit has a lid body, which is screwed onto the container body to cover the opening at the top of the container body. The lid body has an abutting portion that abuts against the peripheral portion when mounted on the container body, and the abutting portion protrudes from a position opposite to the peripheral portion of the lid body.

[0011] According to the above-described lidded container, the abutting portion is provided in a plurality of arrangements at a position opposite to the peripheral portion of the lid body.

[0012] According to the above-described lidded container, the abutting portion is provided around the entire circumference at a position opposite to the peripheral portion of the lid body.

[0013] According to the above-described lidded container, the peripheral portion is characterized by being composed of the outwardly bent portion of the inner container.

[0014] According to the above-described lidded container, the lid body has: an outer cover covering the upper opening of the container body; and an inner plug located at the inner center of the outer cover, inserted into the inner side of the container body from the upper opening, wherein the inner plug or the outer cover is screwed onto the container body.

[0015] According to the above-mentioned lidded container, a sealing member is installed on the outer periphery of the inner plug in a manner that allows for easy loading and unloading, and the sealing member seals the inner side of the container body and the inner plug.

[0016] As described above, according to the present invention, it is possible to provide a covered container that can further improve ease of use by improving the operability of the cover unit when opening and closing the upper opening of the container body. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view showing the structure of the lidded container according to the first embodiment of the present invention.

[0018] Figure 2 It is an enlarged representation Figure 1 The enclosed portion A in the figure shows a cross-sectional view of a part of the container body.

[0019] Figure 3Viewed from below Figure 1 The diagram shows a three-dimensional view of the cover unit.

[0020] Figure 4 Viewed from below Figure 1 The top view of the cover unit shown.

[0021] Figure 5 This is a cross-sectional view showing the structure of the lidded container according to the second embodiment of the present invention.

[0022] Figure 6 Viewed from below Figure 5 The diagram shows a three-dimensional view of the cover unit.

[0023] Figure 7 Viewed from below Figure 5 The top view of the cover unit shown.

[0024] Figure 8 This is a cross-sectional view showing other configuration examples provided on the periphery of the container body.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1A, 1B…Lidded container; 2…Container body; 2a…Upper opening; 3A, 3B…Lid unit; 4…Outer container; 5…Inner container; 6…Vacuum insulation layer; 7…Internal thread; 8…Extend; 9…Outer joint end; 10…Inner joint end; 11…Straight part; 12…Bent part; 12a…Flat part; 13…Conical part; 14…Straight part; 15…Lid body; 16…Outer cover; 17…Inner plug; 18…External thread; 19…Waterproof gasket (sealing component); 20…Peripheral part; 21, 22…Abutting part; 23…Peripheral part. Detailed Implementation

[0027] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0028] (First Implementation)

[0029] First, as a first embodiment of the present invention, for example, regarding... Figures 1-4 The lidded container 1A shown is described below. Furthermore, Figure 1 This is a cross-sectional view showing the structure of the covered container 1A. Figure 2 It is an enlarged representation Figure 1 The enclosed portion A in the diagram is a cross-sectional view of a portion of the container body 2. Figure 3 This is a perspective view of cover unit 3A from the bottom side. Figure 4 This is a top view of cover unit 3A viewed from below.

[0030] like Figure 1 as well as Figure 2As shown, the lidded container 1A of this embodiment is a beverage container, comprising: a container body 2 with an opening at the top; and a lid unit 3A detachably mounted to the container body 2. This beverage container can keep the beverage (contents) contained in the container body 2 warm or cold. Furthermore, in the lidded container 1A, the lid unit 3A, which is screwed onto the container body 2, can open and close the upper opening 2a of the container body 2.

[0031] Specifically, the container body 2 has, for example, an outer container 4 made of metal such as stainless steel and an inner container 5. The container body 2 has a vacuum insulation structure that is joined together with the outer container 4, which is open at one end (hereinafter referred to as the "open end") 4a, to house the inner container 5, which is open at one end (hereinafter referred to as the "open end") 5a, and a vacuum insulation layer 6 is provided between the outer container 4 and the inner container 5.

[0032] The vacuum insulation layer 6 can be formed, for example, by using a degassing hole located at the center of the bottom surface of the outer container 4 in a chamber that has been depressurized (evacuated) to a high vacuum state, and then sealed with solder.

[0033] The container body 2 can achieve the aforementioned functions of heat preservation or cold preservation by having such a vacuum insulation structure. Furthermore, by having such a vacuum insulation structure, the container body 2 is in a state where the difference between internal pressure (vacuum pressure) and external pressure (atmospheric pressure) always applies tension to the outer container 4 and the inner container 5, thereby increasing the mechanical strength of the outer container 4 and the inner container 5. Therefore, even when the thickness of the outer container 4 and the inner container 5 is reduced, the rigidity of the container body 2 can be improved, enabling the container body 2 to be lightweight.

[0034] The container body 2 has a generally circular bottom portion 2b, a generally cylindrical main body 2c rising from the outer periphery of the bottom portion 2b, a shoulder portion 2d that gradually narrows towards the upper part of the main body 2c, and a generally cylindrical neck portion 2e rising from the shoulder portion 2d. Furthermore, the upper end of the neck portion 2e has a circular opening serving as the upper opening 2a of the container body 2.

[0035] The inner circumferential surface of the neck 2e is provided with an internal thread 7. Furthermore, below the internal thread 7, an annular protrusion 8 is provided that protrudes from the inner circumference of the inner container 5 throughout the entire circumference.

[0036] Furthermore, the lidded container 1A of this embodiment has a generally cylindrical shape, but the shape of the lidded container 1A is not particularly limited and can be appropriately modified according to size, appearance design, etc. In addition, painting or printing can also be applied to the outer peripheral surface of the container body 2 (outer container 4).

[0037] like Figure 2As shown, the container body 2 has an outer joining end 9 and an inner joining end 10 where the docking portions (hereinafter referred to as "dating portions") 4b and 5b of the outer container 4 and the inner container 5 are joined to each other.

[0038] The outer joining end 9 includes a straight portion 11 that extends upward from the opening end 4a of the outer container 4. The straight portion 11 is formed in a straight line in the vertical direction along the outer surface of the neck 2e in cross-section. In addition, at the outer joining end 9, the opening end 4a of the outer container 4 coincides with the mating portion 4b.

[0039] The inner engagement end 10 includes a curved portion 12 that bends the opening end 5a of the inner container 5 outward and folds it back downward, and a flat portion 12a that flattens a part of the curved portion 12.

[0040] The bent portion 12 is bent so that the opening end 5a of the inner container 5 is located between the inner surface of the outer connecting end 9 (outer container 4) and the outer surface of the inner connecting end 10 (inner container 5).

[0041] In the inner joining end 10, if the opening end 5a of the inner container 5 is located in contact with the inner surface of the outer joining end 9 (outer container 4), then when the inner container 5 is inserted into the inner side of the outer container 4, it is impossible to insert the inner container 5 into the inner side of the outer container 4, or the shape of the inner joining end 10 will change, which is not preferable. On the other hand, if the opening end 5a of the inner container 5 is located in contact with the outer surface of the inner joining end 10 (inner container 5), then when the flat portion 12a is formed, the shape of the curved portion 12 will change, and a rounded corner with a good feel to the mouth cannot be obtained, which is also not preferable.

[0042] The flat portion 12a flattens a portion of the curved portion 12 so that it is parallel to the straight portion 11. By providing such a flat portion 12a in the inner joining end 10, the contact area between the straight portion 11 and the curved portion 12 can be increased.

[0043] In the container body 2, the mating portions 4b and 5b of the outer mating end 9 and the inner mating end 10 are joined together with the inner surface of the straight portion 11 mating with the outer surface of the curved portion 12, which includes the flat portion 12a. The joining of the outer mating end 9 and the inner mating end 10 is performed, for example, by welding methods such as laser welding.

[0044] In the container body 2, its 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 portion of the aforementioned curved portion 12. In this embodiment, the upper end portion 5c of the inner container 5 is positioned above the docking portion 5b, but the upper end portion 5c of the inner container 5 may also have a structure consistent with the docking portion 5b.

[0045] In addition, Figure 2 The diagram illustrates the mating portion (boundary) of the outer joining end 9 and the inner joining end 10. After joining, this mating portion melts due to welding, thereby forming a weld bead on the entire circumference of the mating portions 4b and 5b of the outer joining end 9 and the inner joining end 10. Furthermore, the weld bead is finished into a smooth surface by grinding and lapping after welding.

[0046] Furthermore, a tapered portion 13 is provided on the inner surface of the inner container 5, gradually widening towards the docking portion 5b. The tapered portion 13 is configured to slope towards the docking portion 5b from the upper end of a straight portion 14 that is formed in a straight line in the vertical direction from above the internal thread portion 7 along the inner surface of the neck 5e. As a result, when drinking beverages by directly contacting the neck 2e with the mouth in the container body 2, the mouthfeel is good, and good drinking comfort can be obtained.

[0047] In the container body 2, the outer connecting end 9 and the inner connecting end 10 can be joined with high precision, and a well-finished connecting end can be obtained. Therefore, in this container body 2, when drinking beverages with the mouth in direct contact with the neck 2e, the beverage can flow smoothly, and good drinking comfort can be obtained.

[0048] Furthermore, in the container body 2, the weld beads are prevented from becoming too large, and the manufacturing process can be simplified and manufacturing costs reduced. In addition, by reducing the thickness of the outer container 4 and the inner container 5, the container body 2 is made lighter, and the thermal insulation performance is also improved.

[0049] like Figure 1 As shown, the cap unit 3A constitutes a plug that seals the upper opening 2a of the container body 2. Specifically, the cap unit 3A includes a cap body 15 that is screwed onto the container body 2 to cover the upper opening 2a of the container body 2.

[0050] The cover body 15 has: an outer cover 16 that covers the upper opening 2a of the container body 2; and an inner plug 17 that is inserted into the inner side of the container body 2 from the upper opening 2a.

[0051] The outer cover 16 is made of a heat-resistant resin such as polypropylene, and has a peripheral wall portion 16a that is formed in a generally cylindrical shape in a manner continuous with the main body 2c of the container body 2, and an upper wall portion 16b that seals the upper part of the peripheral wall portion 16a.

[0052] The inner plug 17 is made of a heat-resistant resin such as polypropylene. The inner plug 17 has a generally cylindrical shape with a bottom and is integrally mounted to the center of the lower surface of the upper wall portion 16b by means of welding or the like. Thus, the inner plug 17 is located in the center of the inner side of the outer cover 16. Furthermore, the interior of the inner plug 17 is not limited to air as an insulating layer; it can also be configured to accommodate an insulating element S.

[0053] Furthermore, an external threaded portion 18 is provided on the outer peripheral surface of the inner plug 17. In the covered container 1A, the inner plug 17 (cover body 15) is installed on the container body 2 in a freely detachable manner by the helical engagement of the external threaded portion 18 and the internal threaded portion 7. Moreover, the internal threaded portion 7 and the external threaded portion 18 are composed of two threads forming complementary shapes. When using two threads, the cover body 15 (cover unit 3A) can be installed and removed relative to the container body 2 with fewer rotation operations (approximately 180° in this embodiment).

[0054] A water-stop gasket 19 is installed on the outer periphery of the inner plug 17 in a way that allows for easy installation and removal. The water-stop gasket 19 is an annular sealing component between the inner side of the sealed container body 2 and the inner plug 17, and is made of elastic components such as heat-resistant rubber or elastomers.

[0055] On the other hand, a flange portion 17a is provided at the lower end of the inner plug 17 in a manner that protrudes in the direction of diameter expansion. The water-stop gasket 19 is fitted into the flange portion 17a around its entire circumference.

[0056] Furthermore, two elastic flange portions 19a are provided on the outer peripheral surface of the water-stopping gasket 19, protruding in the direction of diameter expansion. When the cap body 15 is installed on the container body 2, the water-stopping gasket 19 becomes elastically deformed by the elastic flange portions 19a and is in close contact with the protrusion 8 of the container body 2 around its entire circumference. As a result, the protrusion 8 (container body 2) and the inner plug 17 (cap body 15) can be sealed (water-stopped).

[0057] On the other hand, the water-stop gasket 19 can be removed from the flange portion 17a by elastically deforming (stretching) itself. As a result, the cover body 15 and the water-stop gasket 19 can be cleaned independently, and hygiene can be maintained between the water-stop gasket 19 and the flange portion 17a.

[0058] Furthermore, the waterproofing gasket 19 is not necessarily limited to the shape and structure described above. For example, the number of elastic flange portions 19a is not limited to the two described above, but can also be one or more. In addition, the waterproofing gasket 19 is not necessarily limited to the structure provided with elastic flange portions 19a described above, and its shape and other aspects can be appropriately modified.

[0059] In the lidded container 1A of this embodiment with the above structure, by rotating the outer cover 16 (cover body 15) clockwise (hereinafter referred to as the "closing direction") relative to the container body 2 from the state where the inner plug 17 is inserted into the container body 2 from the upper opening 2a, the cover unit 3A can be installed on the container body 2 by the helical engagement of the inner thread 7 and the outer thread 18.

[0060] On the other hand, by rotating the outer cover 16 (cover body 15) counterclockwise (hereinafter referred to as the "opening direction") relative to the container body 2 from the state where the cover body 15 (cover unit 3A) is installed on the container body 2, the screw engagement between the inner thread portion 7 and the outer thread portion 18 can be released, and the cover unit 3A can be removed from the container body 2.

[0061] However, the lidded container 1A of this embodiment has a peripheral portion 20 around the upper opening 2a on the container body 2 side, and has a plurality of (four in this embodiment) abutting portions 21 on the lid body 15 side opposite to the peripheral portion 20.

[0062] like Figure 2 As shown, the peripheral portion 20 is formed by a portion of the outwardly bent part of the inner container 5, i.e., 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 upper opening 2a around its entire circumference. Furthermore, the peripheral portion 20 is formed by an upwardly convex curved surface or a flat surface.

[0063] On the other hand, such as Figure 3 as well as Figure 4 As shown, a plurality of abutment portions 21 are located between the peripheral wall portion 16a of the outer cover 16 and the inner plug 17, and are configured to protrude from the lower surface of the upper wall portion 16b. In addition, the plurality of abutment portions 21 are arranged at equal intervals in the circumferential direction of the cover body 15.

[0064] In the lidded container 1A of this embodiment, which has the above structure, as follows: Figure 1 As shown, when the cover unit 3A is installed on the container body 2, it becomes a state in which multiple abutting parts 21 abut against the peripheral part 20.

[0065] In this case, when the multiple abutting portions 21 abut against the peripheral portion 20, the lid body 15 cannot be rotated further in the closing direction relative to the container body 2, thus limiting the screw-fit mounting position of the lid unit 3A relative to the container body 2. This prevents excessive tightening of the lid unit 3A caused by excessive rotation of the lid body 15 in the closing direction.

[0066] On the other hand, when the lower end of the peripheral wall portion 16a forming the outer cover 16 abuts against the shoulder portion 2d of the container body 2 before the plurality of abutting portions 21 abut against the peripheral portion 20 of the container body 2, when the cover body 15 is rotated excessively relative to the container body 2 in the closing direction, the lower end of the outer cover 16 is pressed against the shoulder portion 2d of the container body 2.

[0067] In this case, the shoulder 2d of the container body 2 has a tapered shape, which allows the peripheral wall 16a of the outer cover 16 to deform in the expanding direction, further rotating the cover body 15 relative to the container body 2 in the closing direction. Therefore, it is difficult to restrict the screw-fit mounting position of the cover unit 3A relative to the container body 2. Furthermore, if the cover unit 3A is over-tightened, the torque required to release the tightness increases, raising concerns that it may be difficult to rotate the cover body 15 in the opening direction. Moreover, when the lower end of the outer cover 16 abuts against the shoulder 2d of the container body 2, there is a concern that coatings, printing, etc., applied to the outer surface of the container body 2 may be scratched by the lower end of the outer cover 16.

[0068] In contrast, in the lidded container 1A of this embodiment, the lower end of the outer cover 16 abuts against the shoulder 2d of the container body 2 before the multiple abutting portions 21 abut against the peripheral portion 20, thus preventing the lower end of the outer cover 16 from pressing against the shoulder 2d of the container body 2.

[0069] Furthermore, in the lidded container 1A of this embodiment, when the plurality of abutting portions 21 abut against the aforementioned peripheral portion 20, a gap is formed between the lower end of the outer cover 16 and the shoulder portion 2d of the container body 2. However, it may also be configured such that the lower end of the outer cover 16 contacts the shoulder portion 2d of the container body 2 to the point that it is not pressed.

[0070] Furthermore, in the lidded container 1A of this embodiment, when the lid unit 3A is installed or removed relative to the container body 2, the plurality of abutment portions 21 slide in contact with the peripheral portion 20. Since the plurality of abutment portions 21 do not abut against the peripheral portion 20 around the entire circumference, the resistance when the plurality of abutment portions 21 slide in contact with the peripheral portion 20 can be reduced, making it easier to rotate the lid unit 3A.

[0071] On the other hand, when the inner surface of the outer container and the outer surface of the inner container are joined together at their upper ends by welding (so-called butt welding), the pointed upper end of the container body easily gets stuck into the opposite surface of the lid body. Therefore, if the lid unit is over-tightened, the torque required to release the tightness increases, making it difficult to rotate the lid body in the opening direction. Furthermore, to prevent the upper end from becoming too tight, a gasket made of elastic components such as silicone resin is required.

[0072] In contrast, in the lidded container 1A of this embodiment, a plurality of abutment portions 21 protruding from the surface of the lid body 15 opposite to the peripheral portion 20 abut against the peripheral portion 20 formed by the outwardly bent portion of the inner container 5. In this case, a peripheral portion 20 with a width wider than the butt weld is formed at the upper end of the container body 2, thereby preventing the peripheral portion 20 from biting into the surface opposite to the lid body 15. Furthermore, it is not necessary to provide other components such as gaskets to prevent biting into the lid body 15.

[0073] As described above, in the lidded container 1A of this embodiment, by improving the operability of the lid unit 3A when opening and closing the upper opening 2a of the container body 2, further improvements in ease of use can be achieved.

[0074] (Second Implementation)

[0075] Next, as a second embodiment of the present invention, for example, regarding... Figures 5-7 The lidded container 1B shown is described below.

[0076] also, Figure 5 This is a cross-sectional view showing the structure of the covered container 1B. Figure 6 This is a perspective view of cover unit 3B from the bottom side. Figure 7 This is a top view of the cover unit 3B viewed from below. Furthermore, in the following description, parts equivalent to the covered container 1A described above are omitted, and the same reference numerals are used in the accompanying drawings.

[0077] like Figure 5 As shown, the lidded container 1B of this embodiment is configured to have a lid unit 3B that can be freely installed on the container body 2 instead of the lid unit 3A described above.

[0078] Specifically, such as Figure 6 as well as Figure 7 As shown, the cover unit 3B has an abutment portion 22 at a position on the cover body 15 opposite to the peripheral portion 20, instead of the aforementioned plurality of abutment portions 21.

[0079] The abutment 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 along the entire circumference. Apart from this, it has a structure that is basically the same as the cover unit 3A described above.

[0080] In the lidded container 1B of this embodiment, which has the above structure, as follows: Figure 5 As shown, with the cover unit 3B installed on the container body 2, the abutting part 22 abuts against the peripheral part 20.

[0081] In this case, when the contact portion 22 abuts against the peripheral portion 20, the lid body 15 cannot be rotated further in the closing direction relative to the container body 2, thus limiting the installation position of the lid unit 3B relative to the container body 2 based on the screw fit. Therefore, excessive tightening of the lid unit 3B caused by excessive rotation of the lid body 15 in the closing direction can be prevented.

[0082] Furthermore, in the lidded container 1B of this embodiment, the lower end of the outer cover 16 abuts against the shoulder 2d of the container body 2, forming a contact portion 22 abutting against the peripheral portion 20, thus preventing the lower end of the outer cover 16 from pressing against the shoulder 2d of the container body 2.

[0083] Furthermore, in the lidded container 1B of this embodiment, when the contact portion 22 is in contact with the peripheral portion 20, a gap is formed between the lower end of the outer cover 16 and the shoulder 2d of the container body 2. However, it can also be configured such that the lower end of the outer cover 16 contacts the shoulder 2d of the container body 2 to the point that it is not pressed.

[0084] Furthermore, in the lidded container 1B of this embodiment, the abutment portion 22, which is provided on the surface of the lid body 15 opposite to the peripheral portion 20, abuts against the peripheral portion 20 formed by the outwardly bent portion of the inner container 5. In this case, since the peripheral portion 20, which is wider than the butt weld, is formed at the upper end of the container body 2, it is possible to prevent the peripheral portion 20 from biting into the surface opposite to the lid body 15. In addition, it is not necessary to provide other components such as a gasket to prevent biting into the lid body 15.

[0085] As described above, in the lidded container 1B of this embodiment, by improving the operability of the lid unit 3B when opening and closing the upper opening 2a of the container body 2, further improvements in ease of use can be achieved.

[0086] Furthermore, the present invention is not limited to the structure of the above embodiments, and various modifications can be made without departing from the spirit of the present invention.

[0087] For example, the container body 2 is not necessarily limited to a structure having the aforementioned peripheral portion 20; for example, it could also have... Figure 8 The structure of the peripheral portion 23 shown.

[0088] The peripheral portion 23 is formed by the outwardly bent portion of the inner container 5. Specifically, it is bent by bending the open end 5a of the inner container 5 toward the open end 4a of the outer container 4, thereby setting it to protrude in an annular shape from the upper end of the inner container 5 in the direction of diameter expansion. Thus, the peripheral portion 23 is provided around the upper opening 2a all the way around the circumference.

[0089] In the container body 2, the opening ends 4a and 5a of the container 4 are joined together, with the lower surface of the opening end 4a of the container 4 abutting against the opening end 5a side of the inner container 5. The joining of these opening ends 4a and 5a is achieved, for example, by welding methods such as laser welding.

[0090] In addition, the inner container 5 is formed by stretching, but during the stretching process, an edge pressing flange is generated around the opening end 5a. Normally, when the outer container 4 and the inner container 5 are welded by butt welding, after cutting off the edge pressing flange generated in the inner container 5, the opening ends of the outer container are welded together in a butt-fitting state with the inner surface of the outer container and the outer surface of the inner container.

[0091] In contrast, in this embodiment, the edge pressing flange generated in the inner container 5 is not cut off, and it can be used as the peripheral portion 23 in its original state. As a result, not only is the cutting process of the edge pressing flange unnecessary, but the material yield of the inner container 5 is also improved, thereby reducing manufacturing costs.

[0092] In addition, Figure 8 The diagram illustrates the mating portion (boundary) between the outer container 4 and the inner container 5. After joining, this mating portion melts due to welding, thus forming a weld bead along the entire circumference of the welded portion. Furthermore, the weld bead is finished into a smooth surface by grinding and lapping after the welding process.

[0093] Furthermore, the aforementioned cover units 3A and 3B are configured as inner plugs 17 that are inserted into the upper opening 2a of the container body 2 and installed on the container body 2 by a screw fit, but are not necessarily limited to such a structure. For example, the cover units 3A and 3B may also be configured as outer covers 16 that are installed on the container body 2 by a screw fit to cover the upper opening 2a of the container body 2.

[0094] In this configuration, instead of the aforementioned internal thread portion 7 and external thread portion 18, the outer cover 16 (cover body 15) can be installed on the container body 2 in a freely detachable manner by the helical engagement between the external thread portion provided on the outer peripheral surface of the neck 2e and the internal thread portion provided on the inner peripheral surface of the peripheral wall portion 16a constituting the outer cover 16.

[0095] Furthermore, while the aforementioned cover units 3A and 3B constitute the upper opening 2a of the container body 2 for direct opening and closing, they are not necessarily limited to this structure. For example, they can also be configured to be mounted on the cover body installed on the container body 2 in a manner that allows for free opening and closing. Moreover, the cover is not limited to a structure in which it is mounted on the cover body via a screw connection, but can also be a structure in which it is mounted on the cover body in a manner that allows for free rotation via a hinge.

[0096] Furthermore, in the above embodiments, the present invention was exemplified as being applied to a beverage container having heat preservation and cold preservation functions by means of a container body 2 having the above-described vacuum insulation structure. However, the present invention can be widely applied to lidded containers having a container body and a lid unit that is freely mounted on the container body.

Claims

1. A container with a lid, characterized in that, have: The main body of the container has an opening at the top; and The cover unit is installed on the container body in a detachable manner. The container body has the following structure: an outer metal container with one open end and an inner container, which are joined together to house the inner container inside the outer container, and a vacuum insulation layer is provided between the outer container and the inner container. A peripheral portion is provided around the upper opening of the container body. The peripheral portion is provided in an upward-convex ring shape. The cover unit has a cover body, which is screwed onto the container body to cover the upper opening of the container body. The cover body has an abutting portion that abuts against the peripheral portion when it is installed on the container body. The abutting portion is configured to protrude integrally from the cover body at a position opposite to the peripheral portion, and its radial width is wider than the area abutting the peripheral portion. The lidded container has a rotation-restricting function so that when it comes into contact with the periphery, the lid body cannot be rotated further in the closing direction substantially relative to the container body.

2. The lidded container according to claim 1, characterized in that, The abutting portions are arranged in a plurality of positions on the cover body opposite to the peripheral portion.

3. The lidded container according to claim 1, characterized in that, The abutting portion is disposed on the circumference of the cover body at a position opposite to the peripheral portion.

4. The lidded container according to any one of claims 1 to 3, characterized in that, The peripheral portion is formed by the outwardly bent portion of the inner container.

5. The lidded container according to any one of claims 1 to 3, characterized in that, The lid body has: an outer lid covering the upper opening of the container body; and an inner plug located at the center of the inner side of the outer lid, inserted into the inner side of the container body from the upper opening. The inner plug or the outer cover is installed on the container body by a screw fit.

6. The lidded container according to claim 4, characterized in that, The lid body has: an outer lid covering the upper opening of the container body; and an inner plug located at the center of the inner side of the outer lid, inserted into the inner side of the container body from the upper opening. The inner plug or the outer cover is installed on the container body by a screw fit.

7. The covered container according to claim 5, characterized in that, A sealing component is installed on the outer periphery of the inner plug in a manner that allows for easy installation and removal. This sealing component seals the space between the inside of the container body and the inner plug.

8. The lidded container according to claim 6, characterized in that, A sealing component is installed on the outer periphery of the inner plug in a manner that allows for easy installation and removal. This sealing component seals the space between the inside of the container body and the inner plug.

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