Container with lid

Abstract

The present invention provides a container with a lid that can be easily and safely removed. The lid (3) comprises: an outer lid (9) covering an opening (2a), an inner lid (10) embedded in the inner side of a container body (2) from the opening, a sealing member (13) for sealing the container body and the inner lid when mounted on the outer periphery of the inner lid, a middle plug (11) located at the inner center of the outer lid and embedded in the inner side of the inner lid, and a plug body (18) located at the center of the bottom surface of the middle plug and blocking a vent (17) provided at the center of the inner lid, wherein the inner lid is mounted on the container body in a detachable manner by screwing together a first internal thread (7) provided on the inner periphery of the container body and a first external thread (12) provided on the outer periphery of the inner lid, and the inner lid is mounted on the middle plug in a detachable manner by screwing together a second internal thread (15) provided on the inner periphery of the inner lid and a second external thread (16) provided on the outer periphery of the middle plug.

Description

[0001] This application is a divisional application of an application with an application date of May 6, 2020, application number 202010371673.3, and invention name “Container with Lid”. Technical Field

[0002] The present invention relates to a container with a lid. Background Art

[0003] For example, there is a container with a lid that has a heat preservation and cold preservation function by virtue of a container body having a vacuum insulation structure (for example, refer to the following Patent Document 1). In such a container with a lid, a structure is adopted in which an opening provided in the container body is closed using an inner lid and an outer lid.

[0004] Specifically, the container with a lid comprises: a container body having an opening at the top, an inner lid that blocks the opening by being inserted into the inner side of the container body from the opening, a water stop gasket (sealing member) that seals the container body and the inner lid by being attached to the inner lid, and an outer lid that is attached to the container body by screwing in a state of covering the opening from the outside. In addition, the container with a lid has a structure in which the air hole (vent hole) provided in the inner lid is blocked by the blocking gasket (plug body) provided in the outer lid.

[0005] In a container with a lid, when the outer lid is installed on the container body, the blocking gasket abuts against the inner lid, thereby limiting the movement of the inner lid to the upper side. In addition, in a container with a lid, when the outer lid is removed from the container body, the blocking of the air hole by the blocking gasket is released. Thus, even when the pressure in the container body is reduced (becomes negative pressure), when the outer lid is removed from the container body, the outside air is introduced through the air hole, so that the pressure in the container body becomes the same as the atmospheric pressure. Therefore, the inner lid is not pulled toward the inside of the container body, and the inner lid can be easily removed from the container body.

[0006] Patent Document 1: Japanese Patent Application Publication No. 2013-227034

[0007] However, in the above-mentioned conventional covered container, for example, when high-temperature contents are placed inside the container body, or when the contents inside the container body decay and generate gas, the pressure inside the container body sealed by the inner and outer covers rises (becomes positive pressure), and accordingly, the inner cover is pressed against the outer cover.

[0008] At this time, the tightening force caused by the screwing between the container body and the outer cover increases, which makes it difficult to rotate the outer cover in the direction of removal. In addition, when removing the outer cover, since the pressure in the container body is strongly released, there is a situation where a loud sound is emitted or the inner cover flies upward.

[0009] In addition, in the above-mentioned conventional covered container, for example, when time has passed since high-temperature contents were placed inside the container body, the temperature thereof decreases, thereby reducing the pressure inside the container body closed by the inner and outer covers (becoming negative pressure), so that the inner cover is pressed against the container body.

[0010] At this time, the tightening force by screwing the container body and the outer cap is reduced, and thus the outer cap may be easily loosened. Summary of the invention

[0011] The present invention has been made in view of such a conventional situation, and an object of the present invention is to provide a container with a lid whose lid can be easily and safely removed.

[0012] In order to achieve the above-mentioned object, the present invention provides the following means.

[0013] [1] A container with a cover, characterized in that:

[0014] have:

[0015] A container body having an opening at the top, and

[0016] a cover for opening and closing the opening,

[0017] The cover body has:

[0018] an outer cover covering the opening,

[0019] An inner cover inserted into the inner side of the container body from the opening,

[0020] a sealing member for sealing between the container body and the inner cover in a state of being attached to the outer periphery of the inner cover,

[0021] a middle plug located at the inner center of the outer cover and embedded in the inner side of the inner cover, and

[0022] A plug body is located at the center of the bottom surface of the middle plug and blocks the vent hole provided at the center of the inner cover.

[0023] The inner cap is detachably mounted on the container body by screwing a first internal thread portion provided on the inner periphery of the container body and a first external thread portion provided on the outer periphery of the inner cap, and

[0024] The inner cover is detachably mounted to the middle plug by screwing a second internal thread portion provided on an inner peripheral portion of the inner cover and a second external thread portion provided on an outer peripheral portion of the middle plug.

[0025] [2] The container with a lid according to [1] above, characterized in that:

[0026] A temporary fixing mechanism is provided for temporarily fixing the inner cover relative to the middle plug at a position where the screwing of the second internal thread portion and the second external thread portion starts.

[0027] From a state in which the inner cover is temporarily fixed to the middle plug by the temporary fixing mechanism, the inner cover is mounted to the middle plug by screwing the second internal thread portion and the second external thread portion together.

[0028] [3] The container with a lid according to [2] above, characterized in that:

[0029] From a state in which the inner cover temporarily fixed to the middle plug by the temporary fixing mechanism is embedded into the inner side of the container body from the opening, the outer cover is rotated in the closing direction, thereby starting the screwing-in of the first internal thread portion and the first external thread portion, and from a state in which the sealing component abuts against the protrusion provided on the inner circumference of the container body, starting the screwing-in of the second internal thread portion and the second external thread portion.

[0030] [4] The container with a lid according to [1] above, characterized in that:

[0031] From a state where the inner cover is inserted into the inner side of the container body from the opening, and the middle plug is inserted into the inner side of the inner cover, the outer cover is rotated in the closing direction, thereby starting the screwing of the first internal thread portion and the first external thread portion, and from a state where the sealing component abuts against the protrusion provided on the inner circumference of the container body, starting the screwing of the second internal thread portion and the second external thread portion.

[0032] [5] The container with a lid according to [1] above, characterized in that:

[0033] By inserting the inner cover into the inner side of the container body from the opening, the sealing component is brought into contact with the protrusion provided on the inner peripheral portion of the container body, and by rotating the outer cover in the closing direction from the state where the middle plug is inserted into the inner side of the inner cover, the second internal thread portion and the second external thread portion begin to be screwed together.

[0034] [6] The container with a lid according to [2] above, characterized in that:

[0035] From the state in which the inner cover temporarily fixed to the middle plug by the temporary fixing mechanism is embedded into the inner side of the container body from the opening, and the sealing component is in contact with the protrusion provided on the inner peripheral portion of the container body, the outer cover is rotated in the closing direction, thereby starting the screwing of the second internal thread portion and the second external thread portion.

[0036] [7] The container with a lid according to any one of [1] to [6] above, characterized in that:

[0037] From a state in which the cover body is mounted on the container body, the outer cover is rotated in an opening direction to release the screwing engagement between the second internal thread portion and the second external thread portion. Thereafter, from a state in which an inner peripheral side abutting portion provided on the inner peripheral portion of the inner cover abuts against an outer peripheral side abutting portion provided on the outer peripheral portion of the middle plug, the inner cover is rotated in an opening direction integrally with the outer cover to release the screwing engagement between the first internal thread portion and the first external thread portion, thereby enabling the cover body to be removed from the container body.

[0038] [8] The container with a lid according to [7] above, characterized in that:

[0039] At a position where the screwing of the second internal thread portion and the second external thread portion is released, the contact of the plug body with the periphery of the vent hole is released, whereby the vent hole is opened.

[0040] [9] The container with a lid according to any one of [2], [3] and [6] above, characterized in that:

[0041] The temporary fixing mechanism comprises: a stopped portion arranged on the outer periphery of the middle plug, a first elastic piece arranged on the peripheral wall of the inner cover and capable of elastically deforming in the diameter expansion direction of the inner cover, and a locking portion arranged on the first elastic piece and locked with the stopped portion.

[0042]

[10] The container with a lid according to [9] above, characterized in that:

[0043] The first external thread portion is provided on the outer peripheral side of the first elastic piece.

[0044]

[11] The container with a lid according to any one of [1] to [6] above, characterized in that:

[0045] A click mechanism is provided for providing a click feeling during the period when the screwing engagement between the second internal thread portion and the second external thread portion is completed.

[0046]

[12] The container with a lid according to

[11] above, characterized in that:

[0047] The click mechanism includes an outer engaging convex portion provided on the outer cover and an inner engaging convex portion provided on the inner cover, and provides a click feeling when either the outer engaging convex portion or the inner engaging convex portion passes over the other.

[0048]

[13] The container with a lid according to

[12] above, characterized in that:

[0049] The click mechanism has a second elastic piece which is arranged on the inner cover and can be elastically deformed in the direction of the inner cover's diameter reduction.

[0050] The inner engaging protrusion is provided on the second elastic piece.

[0051]

[14] The container with a lid according to

[12] or

[13] above, characterized in that:

[0052] The resistance when either the outer engaging protrusion or the inner engaging protrusion passes over the other is greater when the outer cover is rotated in the opening direction than when the outer cover is rotated in the closing direction.

[0053]

[15] The container with a lid according to any one of [1] to

[14] above, characterized in that:

[0054] The container body has a vacuum insulation structure.

[0055] As described above, according to the present invention, it is possible to provide a container with a lid whose lid can be easily and safely removed. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 This is an exploded perspective view of a container with a lid according to an embodiment of the present invention as viewed from above.

[0057] Figure 2 Observed from the bottom Figure 1 An exploded perspective view of a container with a lid is shown.

[0058] Figure 3 Observed from the bottom Figure 1 A perspective view of an outer cover and a middle plug included in the container with a cover shown.

[0059] Figure 4 Observed from the top Figure 1 A perspective view of an inner lid of the container with lid shown.

[0060] Figure 5 Observed from the bottom Figure 1 A perspective view of an inner lid of the container with lid shown.

[0061] Figure 6 It means in Figure 1 A cross-sectional view of a container with a lid showing a state in which an inner lid is temporarily fixed relative to a middle plug.

[0062] Figure 7 It means in Figure 1 A cross-sectional view showing a state in which a water stop gasket abuts against a protrusion in the container with a lid shown.

[0063] Figure 8 It means in Figure 1 A cross-sectional view of a container with a lid showing a state in which an inner lid is installed relative to a middle plug.

[0064] Fig. 9 It means in Figure 1 A cross-sectional view of a container with a lid showing a state in which an outer lid is mounted on a container body.

[0065] Fig.10 It means in Figure 1 A cross-sectional view of a container with a lid showing a state in which the second internal thread portion and the second external thread portion are released from screwing engagement.

[0066] Fig.11 It means in Figure 1 A cross-sectional view of a container with a lid showing a state in which the first internal thread portion and the first external thread portion are released from screwing engagement.

[0067] Fig.12 is Figure 1 The present invention is a partially cutaway perspective view showing a state in which the inner engaging protrusion passes over the outer engaging protrusion when the outer cover is rotated in the closing direction in the click mechanism of the container with a cover.

[0068] Fig.13 is Figure 1 The present invention is a partially cutaway perspective view showing a state in which the inner engaging protrusion passes over the outer engaging protrusion when the outer cover is rotated in the opening direction in the click mechanism of the container with a cover.

[0069] Description of Reference Numerals

[0070] 1…Container with lid; 2…Container body; 2a…Opening; 3…Lid; 7…1st internal threaded portion; 8…Protrusion; 9…Outer lid; 10…Inner lid; 11…Center plug; 12…1st external threaded portion; 13…Water-stop gasket (sealing component); 15…2nd internal threaded portion; 16…2nd external threaded portion; 17…Ventilation hole; 18…Bolt; 19…Temporary fixing mechanism; 20…Stuck portion; 21…1st elastic sheet; 22…Stuck portion; 24…Anti-rotation mechanism; 25…Outer peripheral side abutting portion; 26…Inner peripheral side abutting portion; 27…Clicking mechanism; 28…Outer engaging protrusion; 29…Inner engaging protrusion; 30…2nd elastic sheet. DETAILED DESCRIPTION

[0071] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0072] As one embodiment of the present invention, for example Figures 1 to 13 The container 1 with a lid is shown for explanation.

[0073] in, Figure 1 This is an exploded perspective view of the container with a lid 1 as seen from above. Figure 2 This is an exploded perspective view of the container with a lid 1 as seen from the bottom. Figure 3 This is a perspective view of the outer cover 9 and the middle plug 11 included in the container with a cover 1 as seen from the bottom. Figure 4 This is a perspective view of the inner lid 10 provided in the lidded container 1 as viewed from above. Figure 5 This is a perspective view of the inner lid 10 provided in the lidded container 1 as viewed from the bottom. Figure 6 It is a cross-sectional view showing a state in which the inner lid 10 is temporarily fixed to the middle plug 11 in the lidded container 1 . Figure 7 It is a cross-sectional view showing a state in which the water stop gasket 13 is in contact with the protrusion 8 in the container with lid 1 . Figure 8 It is a cross-sectional view showing a state in which the inner lid 10 is attached to the middle plug 11 in the lidded container 1 . Fig. 9 It is a cross-sectional view showing a state in which the outer cover 9 is attached to the container body 2 in the container with cover 1 . Fig.10 It is a cross-sectional view showing a state in which the second internal thread portion 15 and the second external thread portion 16 are released from the screwing engagement in the lidded container 1 . Fig.11 It is a cross-sectional view showing a state in which the first internal thread portion 7 and the first external thread portion 12 are released from the screwing engagement in the container with lid 1 . Fig.12 This is a partially cutaway perspective view showing a state in which the inner engaging convex portion 29 passes over the outer engaging convex portion 28 when the outer cover 9 rotates in the closing direction in the click mechanism 27 of the lidded container 1 . Fig.13 This is a partially cutaway perspective view showing a state in which the inner engaging protrusion 29 passes over the outer engaging protrusion 28 when the outer cover 9 rotates in the opening direction in the click mechanism 27 of the lidded container 1 .

[0074] like Figure 1 as well as Figure 2 As shown, the covered container 1 of this embodiment includes a container body 2 and a lid 3 for opening and closing an opening 2a provided at the upper portion of the container body 2. The covered container 1 is a soup pot capable of keeping ingredients (contents) contained in the container body 2 warm by the container body 2 having a vacuum insulation structure.

[0075] In addition, the lidded container 1 of the present embodiment has a generally cylindrical appearance as a whole, but the appearance of the lidded container 1 is not particularly limited and can be appropriately changed according to size, appearance design, etc. In addition, the outer peripheral surface of the container body 2 can also be coated, printed, etc.

[0076] like Figure 1 , Figure 2 as well as Figure 7 to Figure 11As shown, the container body 2 has an outer container 4 and an inner container 5 made of metal such as stainless steel. The container body 2 is composed of an insulating container in which the inner container 5 having a bottom and a bottom having an open end is accommodated inside the outer container 4 having a bottom and a cylindrical shape, and the open ends of the inner container 5 are joined to each other, and a vacuum insulation layer 6 is provided between the outer container 4 and the inner container 5.

[0077] The vacuum heat insulating layer 6 can be formed, for example, by sealing a degassing hole provided in the center portion of the bottom surface of the outer container 4 with brazing material in a chamber that is decompressed (evacuated) to a high vacuum.

[0078] By having such a vacuum insulation structure in the container body 2, functions such as heat preservation and cold preservation can be achieved. In addition, by having such a vacuum insulation structure in the container body 2, tension is always applied to the outer container 4 and the inner container 5 due to the difference between the internal pressure (vacuum pressure) and the external pressure (atmospheric pressure), thereby increasing the mechanical strength of the outer container 4 and the inner container 5. As a result, even when the plate thickness of the outer container 4 and the inner container 5 is reduced, the rigidity of the container body 2 can be increased, thereby achieving a lightweight container body 2.

[0079] The container body 2 has a substantially circular bottom portion 2b, a body portion 2c standing upright in a substantially cylindrical shape from the outer periphery of the bottom portion 2b, and a substantially cylindrical neck portion 2d with a reduced diameter on the upper side of the body portion 2c. In addition, the upper end portion of the neck portion 2d is opened in a circular shape as the opening portion 2a of the container body 2. In addition, a first internal thread portion 7 is provided on the inner peripheral surface of the neck portion 2d (the inner container 5). In addition, an annular protrusion 8 is provided below the first internal thread portion 7 to protrude from the inner peripheral surface of the inner container 5 (the container body 2) over the entire circumference.

[0080] The cover body 3 includes: an outer cover 9 covering the opening 2a of the container body 2, an inner cover 10 embedded in the inner side of the container body 2 from the opening 2a, a sealing component 13 that seals the container body 2 and the inner cover 10 when installed on the outer peripheral portion of the bottom surface of the inner cover 10, a middle plug 11 located in the inner center portion of the outer cover 9 and embedded in the inner side of the inner cover 10, and a plug body 18 located in the central portion of the bottom surface of the middle plug 11 and blocking the vent hole 17 provided in the central portion of the bottom surface of the inner cover 10.

[0081] like Figure 1 to Figure 3 as well as Figure 7 to Figure 11 As shown, the outer cover 9 is made of a heat-resistant resin such as polypropylene, and has a peripheral wall portion 9a formed in a substantially cylindrical shape according to the outer diameter of the trunk portion 2c of the container body 2, and an upper wall portion 9b that blocks the upper portion of the peripheral wall portion 9a.

[0082] like Figure 1 , Figure 2 as well as Figures 4 to 11 As shown, the inner cover 10 is made of a heat-resistant resin such as polypropylene, and has a substantially circular bottom wall 10a and a substantially cylindrical peripheral wall 10b standing upright from the outer periphery of the bottom wall 10a. In addition, an annular upper flange 10c is protruded over the entire circumference on the upper end side of the outer peripheral surface of the peripheral wall 10b.

[0083] The outer peripheral surface of the peripheral wall portion 10b (inner cap 10) is provided with a first external thread portion 12 that is screwed with the first internal thread portion 7 on the container body 2 side. In the container with lid 1, the inner cap 10 is detachably mounted relative to the container body 2 by screwing the first internal thread portion 7 and the first external thread portion 12.

[0084] In addition, the first internal thread portion 7 and the first external thread portion 12 are composed of two threads that complement each other. When two threads are used, the inner cap 10 can be attached and detached relative to the container body 2 by a small amount of rotation (about 180 degrees in this embodiment).

[0085] Specifically, in the two threads, there are two starting positions for the screwing of the first internal thread portion 7 and the first external thread portion 12, and the thread teeth of one side and the thread teeth of the other side that constitute the two threads are formed spirally at a prescribed interval, and the starting end of the thread teeth of one side and the starting end of the thread teeth of the other side are configured to have a phase difference of 180° around the axis.

[0086] In the container with a lid 1, the inner lid 10 is rotated clockwise (hereinafter referred to as the "closing direction") relative to the container body 2 while the first internal thread portion 7 is screwed together with the first external thread portion 12, thereby enabling the inner lid 10 to be installed on the container body 2. On the other hand, from the state where the inner lid 10 is installed on the container body 2, the inner lid 10 is rotated counterclockwise (hereinafter referred to as the "opening direction") relative to the container body 2, thereby enabling the first internal thread portion 7 and the first external thread portion 12 to be screwed together, thereby enabling the inner lid 12 to be removed from the container body 2.

[0087] A water stop gasket 13 is detachably mounted on the outer periphery of the bottom surface of the inner cover 10. The water stop gasket 13 is an annular sealing member that seals between the container body 2 and the inner cover 10 and is made of, for example, heat-resistant rubber such as silicone rubber or an elastic member such as an elastomer.

[0088] An annular lower flange portion 10d is provided on the inner cover 10 so as to protrude in the radially increasing direction from the outer circumference of the bottom wall portion 10a. A water stop gasket 13 is fitted over the entire circumference of the lower flange portion 10d.

[0089] On the other hand, the waterproof gasket 13 can be removed from the lower flange portion 10d by elastically deforming (stretching) itself. Thus, the inner cover 10 and the waterproof gasket 13 can be cleaned separately, and the space between the inner cover 10 and the waterproof gasket 13 can be kept clean.

[0090] In addition, an elastic flange portion 13a is provided on the outer peripheral portion of the waterproof gasket 13. The elastic flange portion 13a has a shape that projects downward while being bent from the upper end of the outer peripheral surface of the waterproof gasket 13.

[0091] When the inner cover 10 is attached to the container body 2, the elastic flange 13a of the waterproof gasket 13 is elastically deformed to be in close contact with the protrusion 8 over the entire circumference. Thus, the waterproof gasket 13 can seal the space between the container body 2 and the inner cover 10.

[0092] The middle plug 11 is made of a heat-resistant resin such as polypropylene, has a bottomed, generally cylindrical shape, and is integrally mounted on the center of the lower surface of the upper wall portion 9b by welding or the like. A heat insulating material 14 made of, for example, a foamed polyurethane resin is disposed inside the middle plug 11 as a heat insulating layer. In addition, the heat insulating layer may be air (voids) instead of the heat insulating material 14 described above.

[0093] The inner peripheral surface of the peripheral wall portion 10b (inner cover 10) is provided with a second internal thread portion 15. On the other hand, the outer peripheral surface of the middle plug 11 is provided with a second external thread portion 16 that is screwed with the second internal thread portion 15. In the cover body 3, the inner cover 10 is detachably mounted relative to the middle plug 11 by screwing the second internal thread portion 15 and the second external thread portion 16.

[0094] In addition, the second internal thread portion 15 is configured so that the starting end of the thread groove on one side and the starting end of the thread groove on the other side that form a complementary shape have a phase difference of 180° around the axis, and are set in an angle range of about 30° around the axis of the inner cover 10. On the other hand, the second external thread portion 16 is configured so that the starting end of the thread teeth on one side and the starting end of the thread teeth on the other side that form a complementary shape have a phase difference of 180° around the axis, and are set in an angle range of about 180° around the axis of the center bolt 11, corresponding to the second internal thread portion 15. In addition, the portion of the second external thread portion 16 that is actually screwed with the second internal thread portion 15 is an angle range of about 30° from the end. Therefore, the portion other than this does not screw with the second internal thread portion 15, and therefore it is not necessary to constitute a thread tooth.

[0095] In the cover body 3, when the cover body 3 is viewed from the bottom, the second internal thread portion 15 is screwed with the second external thread portion 16 while the inner cover 10 is rotated clockwise relative to the middle bolt 11 (hereinafter referred to as the "closing direction"), thereby enabling the inner cover 10 to be installed on the middle bolt 11 at a position where the screwing of the second internal thread portion 15 and the second external thread portion 16 ends (hereinafter referred to as the "installation position") On the other hand, in the cover body 3, when the cover body 3 is viewed from the bottom, from a state where the inner cover 10 is installed on the middle bolt 11, the inner cover 10 is rotated counterclockwise relative to the middle bolt 11 (hereinafter referred to as the "opening direction"), thereby enabling the screwing of the second internal thread portion 15 and the second external thread portion 16 to be released, thereby removing the inner cover 10 from the middle bolt 11.

[0096] like Figure 1 , Figure 2 as well as Figures 4 to 11 As shown, a circular vent hole 17 penetrating the center of the bottom wall 10a is provided in the inner cover 10. On the other hand, a plug body 18 is provided in the center of the bottom surface of the middle plug 11 to block the vent hole 17 in the mounting position.

[0097] The plug body 18 is made of heat-resistant rubber such as silicone rubber or an elastic member such as an elastomer. The plug body 18 has a protrusion 18a whose central portion bulges in a dome shape, a flange 18b extending from the periphery of the protrusion 18a in the direction of diameter expansion, a cylindrical portion 18c protruding cylindrically from the side opposite to the protrusion 18a, and an annular groove 18d formed by cutting off the outer peripheral surface of the cylindrical portion 18c.

[0098] Meanwhile, the middle plug 11 has a fitting recess 11a in the center of its bottom surface into which the cylindrical portion 18c fits, and a fitting protrusion 11b protruding from the inner circumference of the fitting recess 11a and fitting into the groove 18d. Thus, the plug body 18 is detachably mounted on the bottom surface center of the middle plug 11.

[0099] In the cover body 3, when the inner cover 10 is screwed onto the middle plug 11, the protrusion 18a of the plug body 18 is elastically deformed and abuts against the periphery of the vent hole 17, thereby blocking the vent hole 17. In addition, in the cover body 3, the plug body 18 can be removed from the middle plug 11, and the middle plug 11 and the plug body 18 can be cleaned separately, so that the space between the middle plug 11 and the plug body 18 can be kept clean.

[0100] like Figure 1 to Figure 6As shown, the cover body 3 is provided with a temporary fixing mechanism 19 for temporarily fixing the inner cover 10 relative to the middle plug 11 at a position where the screwing of the second internal thread portion 15 and the second external thread portion 16 begins (hereinafter referred to as a "temporary fixing position"). The temporary fixing position is the position where the screwing of the second internal thread portion 15 and the second external thread portion 16 begins, and is also the position where the screwing of the second internal thread portion 15 and the second external thread portion 16 is released.

[0101] The temporary fixing mechanism 19 includes a locked portion 20 provided on the outer periphery of the middle plug 11 , a pair of first elastic pieces 21 provided on the peripheral wall 10 b of the inner cover 10 , and a locking portion 22 provided on the distal end side of each first elastic piece 21 .

[0102] In addition, marks indicating temporary fixing positions (not shown) are provided on the inner cover 10 and the middle plug 11. That is, in the cover body 3, by aligning the marks on the inner cover 10 side with the marks on the middle plug 11 side, the inner cover 10 can be positioned at the temporary fixing position relative to the middle plug 11.

[0103] The locked portion 20 is composed of an annular groove portion which is located below the second external thread portion 16 and is recessed over the entire circumference of the outer peripheral surface of the center plug 11 .

[0104] A pair of first elastic pieces 21 are continuously provided at positions opposite to the peripheral wall portion 10b. Specifically, each first elastic piece 21 is provided to extend downward from between the slits 23 that cut the periphery thereof. Thus, the first elastic piece 21 extends downward from between the slits 23, and its end (lower end) side can be elastically deformed in the direction of diameter expansion.

[0105] The locking portion 22 is composed of a protrusion that protrudes from the inner peripheral surface on the distal end (lower end) side of the first elastic piece 21 .

[0106] In the temporary fixing mechanism 19, the middle plug 11 is inserted into the inner side of the inner cover 10 at the temporary fixing position, thereby elastically deforming the pair of first elastic pieces 21 in the diameter expansion direction to be in a state where the locking portion 22 is locked to the locked portion 20. Thus, the inner cover 10 can be temporarily fixed to the middle plug 11 at the temporary fixing position.

[0107] On the other hand, in the temporary fixing mechanism 19 , the pair of first elastic pieces 21 are elastically deformed in the diameter expansion direction at the temporary fixing position to release the locking state of the locking portion 22 relative to the locked portion 20 , thereby allowing the inner cover 10 to be removed from the middle plug 11 .

[0108] like Figure 3 as well as Figure 4 As shown, the cover body 3 includes a rotation-stopping mechanism 24 for restricting the inner cover 10 from rotating relative to the middle plug 11 in the opening direction at the above-mentioned temporary fixed position.

[0109] The anti-rotation mechanism 24 includes an outer circumferential side contact portion 25 provided on the outer circumferential portion of the middle plug 11, and an inner circumferential side contact portion 26 provided on the inner circumferential portion of the inner cover 10. The outer circumferential side contact portion 25 is composed of a protrusion located at the terminal end side of the second external thread portion 16 and protruding from the outer circumferential surface of the middle plug 11 in the direction of diameter expansion. The inner circumferential side contact portion 26 is composed of a protrusion located at the starting end side of the second internal thread portion 15 and protruding from the inner circumferential surface of the inner cover 10 in the direction of diameter reduction.

[0110] In the anti-rotation mechanism 24, the outer circumferential side abutting portion 25 and the inner circumferential side abutting portion 26 abut against each other at the temporary fixing position, thereby limiting the inner cover 10 from rotating in the opening direction relative to the middle plug 11. Therefore, the inner cover 10 temporarily fixed to the middle plug 11 via the temporary fixing mechanism 19 can rotate only in the closing direction relative to the middle plug 11 at the temporary fixing position.

[0111] like Figure 3 to Figure 5 , Fig.12 as well as Fig.13 As shown, the cover body 3 includes a click mechanism 27 for providing a click feeling in the above-mentioned mounting position until the second internal thread portion 15 and the second external thread portion 16 are screwed together.

[0112] The click mechanism 27 includes an outer engaging convex portion 28 provided on the outer cover 9 and an inner engaging convex portion 29 provided on the inner cover 10 .

[0113] The outer engaging protrusion 28 is provided to protrude in the diameter-reducing direction from a position opposite to the inner circumference of the peripheral wall 9a. In addition, the outer locking protrusion 28 has an inclined surface 28a whose slope gradually increases toward the side where the inner cover 10 rotates relative to the middle plug 11 in the closing direction.

[0114] The inner engaging protrusion 29 is provided at the end side of a pair of second elastic pieces 30 provided on the peripheral wall portion 10b of the inner cover 10. The pair of second elastic pieces 30 are provided so as to be continuous with the peripheral wall portion 10b at positions opposite to (opposed to) the peripheral wall portion 10b. Specifically, each second elastic piece 30 is provided so as to extend upward from between a pair of slits 31a and 31b obtained by cutting the upper end of the peripheral wall portion 10b in the up-down direction. In addition, the pair of slits 31a and 31b are located on both sides of the slit 23 that clamps the above-mentioned first elastic piece 21.

[0115] The inner engaging projection 29 is provided so as to project from the tip (upper end) side of the second elastic piece 30 to the outside of the upper flange portion 10c.

[0116] In the click mechanism 27, the inner cover 10 is rotated in the closing direction relative to the middle plug 11 from the temporary fixed position, so that the inner engaging protrusion 29 slides on the inclined surface 28a of the outer engaging protrusion 28, while elastically deforming the second elastic piece 30 in the direction of reducing the diameter. Then, the inner engaging protrusion 29 passes over the outer engaging protrusion 28, so that Fig.12 As shown in FIG. 1 , the second elastic piece 30 elastically returns to its original position, and the inner engaging protrusion 29 and the outer engaging protrusion 28 are engaged with each other at the mounting position.

[0117] In the click mechanism 27 , the click feeling obtained when the inner engaging protrusion 29 passes over the outer engaging protrusion 28 makes it easy to confirm that the inner cover 10 has reached the mounting position, that is, the inner cover 10 has been mounted on the middle plug 11 .

[0118] On the other hand, in the click mechanism 27, the inner cover 10 is rotated from the mounting position relative to the middle bolt 11 in the opening direction, thereby elastically deforming the second elastic piece 30 in the diameter-reducing direction. Then, the inner engaging protrusion 29 passes over the outer engaging protrusion 28, thereby Fig.13 As shown in FIG. 1 , the second elastic piece 30 elastically returns to its original position, and the engagement between the inner engaging protrusion 29 and the outer engaging protrusion 28 is released.

[0119] In the click mechanism 27, due to the direction of the slope of the inclined surface 28a, the resistance when the inner engaging protrusion 29 passes over the outer engaging protrusion 28 in the opening direction becomes higher than the resistance when the inner engaging protrusion 29 passes over the outer engaging protrusion 28 in the closing direction. This prevents the outer cover 9 (middle plug 11) in the installed position from being accidentally loosened relative to the inner cover 10.

[0120] In addition, in the click mechanism 27 of the present embodiment, a click feeling is provided when the inner engaging protrusion 29 passes over the outer engaging protrusion 28 provided with the above-mentioned inclined surface 28a, but it can also be the opposite, and a click feeling is provided when the outer engaging protrusion 28 passes over the inner engaging protrusion 29 provided with the inclined surface.

[0121] The strength of the click feeling of the click mechanism 27 can be adjusted by the shape, surface state, material, etc. of the inner engaging protrusion 29, the outer engaging protrusion 28, and the second elastic piece 30. On the other hand, it is also possible to completely avoid the click feeling.

[0122] In the lidded container 1 of the present embodiment having the above-described structure, from the state where the inner lid 10 is temporarily fixed at the temporary fixing position relative to the middle plug 11 by the above-mentioned temporary fixing mechanism 19, the inner lid 10 temporarily fixed to the middle plug 11 is set to a state where the inner lid 10 is inserted into the inner side of the container body 2 from the opening 2a. Then, from this state, the outer lid 9 is rotated in the closing direction, thereby starting the screwing of the first internal thread portion 7 and the first external thread portion 12. In addition, the inner lid 10 is lowered relative to the container body 2 by the screwing of the first internal thread portion 7 and the first external thread portion 12, thereby Figure 7 As shown in FIG. 1 , the water stop gasket 13 is in contact with the protruding portion 8 .

[0123] From this state, the outer cover 9 is further rotated in the closing direction, thereby Figure 8 As shown, the middle plug 11 is integrally rotated with the outer cap 9 in the closing direction relative to the inner cap 10 fitted inside the container body 2, and the second internal thread portion 15 and the second external thread portion 16 begin to be screwed together.

[0124] Here, the sliding resistance when the inner engaging protrusion 29 of the click mechanism 27 passes over the outer engaging protrusion 28 is smaller than the sliding resistance generated between the water stop gasket 13 and the protrusion 8. Thus, a click feeling can be obtained when the inner engaging protrusion 29 passes over the outer engaging protrusion 28 while the inner plug 11 and the outer cover 9 are integrally rotated in the closing direction relative to the inner cover 10 embedded in the inner side of the container body 2.

[0125] Then, the screwing of the second internal thread portion 15 and the second external thread portion 16 is completed, and the inner cover 10 is installed on the middle plug 11 at the installation position. In addition, the middle plug 11 is lowered relative to the inner cover 10 by the screwing of the second internal thread portion 15 and the second external thread portion 16, and the plug body 18 is in contact with the periphery of the vent hole 17, thereby closing (blocking) the vent hole 17.

[0126] After the second internal thread portion 15 and the second external thread portion 16 are screwed together, Fig. 9 As shown, the outer cover 9 is further rotated in the closing direction, whereby the inner cover 10 and the outer cover 9 are integrally rotated in the closing direction, and the first internal thread portion 7 and the first external thread portion 12 are screwed together.

[0127] Then, the screwing of the first internal thread portion 7 and the first external thread portion 12 is terminated, thereby achieving a state where the cover body 3 is mounted on the container body 2. In addition, the inner cover 10 is lowered relative to the container body 2 by the screwing of the first internal thread portion 7 and the first external thread portion 12, whereby the elastic flange portion 13a of the water stop gasket 13 is elastically deformed and closely adheres to the protrusion 8 over the entire circumference, thereby achieving a state where the container body 2 and the inner cover 10 are sealed.

[0128] Here, even if the center of the inner cover 10 is installed at a position slightly offset from the center of the container body 2, the inner cover 10 is guided along the shape of the protrusion 8 formed in a gentle bowl shape during the process of the inner cover 10 and the outer cover 9 rotating in the closing direction, so that the inner cover 10 moves in the direction in which the central axis is consistent. As a result, the central axes of the container body 2 and the inner cover 10 are consistent, and the water stop gasket 13 is closely attached to the protrusion 8 without bias throughout the entire circumference, so that good water stop performance can be achieved.

[0129] On the other hand, from the state where the cover body 3 is mounted on the container body 2, the outer cover 9 is rotated in the opening direction, thereby Fig.10 As shown, the middle plug 11 and the outer cover 9 are integrally rotated in the opening direction relative to the inner cover 10, and the screwing of the second internal thread portion 15 and the second external thread portion 16 is released. As a result, the inner cover 10 is temporarily fixed to the middle plug 11 at the temporary fixing position.

[0130] In addition, the middle plug 11 rises relative to the inner cover 10, thereby releasing the contact of the plug body 18 with the periphery of the vent hole 17, and the vent hole 17 is opened. As a result, the pressure in the container body 2 is released through the vent hole 17, so that the pressure in the container body 2 becomes the same as the pressure outside (atmospheric pressure).

[0131] Then, from this state, the outer cover 9 is further rotated in the opening direction, thereby Fig.11 As shown, the inner circumferential side contact portion 26 of the anti-rotation mechanism 24 contacts the outer circumferential side contact portion 25, whereby the inner cover 10 and the outer cover 9 rotate in an opening direction as a whole, and the screwing of the first internal thread portion 7 and the first external thread portion 12 is released. In addition, the inner cover 10 rises relative to the container body 2, thereby releasing the contact of the water stop gasket 13 with the protrusion 8.

[0132] This allows the lid 3 to be removed from the container body 2 . That is, the inner lid 10 can be removed from the container body 2 together with the outer lid 9 while the inner lid 10 is temporarily fixed to the middle plug 11 by the temporary fixing mechanism 19 .

[0133] Here, the first external thread portion 12 is provided on the outer peripheral side of the first elastic sheet 21. Therefore, when the cover body 3 is mounted on the container body 2, the first internal thread portion 7 is screwed with the first external thread portion 12, so that the first elastic sheet 21 does not elastically deform toward the diameter expansion side. Therefore, even after the screwing of the second internal thread portion 15 and the second external thread portion 16 is released, the locking state of the locking portion 22 relative to the locked portion 20 is not released when the screwing of the first internal thread portion 7 and the first external thread portion 12 is not released. Therefore, until the cover body 3 is removed from the container body 2, the inner cover 10 is temporarily fixed to the middle bolt 11 by the temporary fixing mechanism 19, and the inner cover 10 will not accidentally fall off from the middle bolt 11 (outer cover 9), thereby ensuring safety.

[0134] As described above, in the covered container 1 of the present embodiment, before the first internal thread portion 7 and the first external thread portion 12 are released from the screwing connection between the above-mentioned container body 2 and the inner cover 10, the second internal thread portion 15 and the second external thread portion 16 are released from the screwing connection between the inner cover 10 and the middle plug 11, thereby releasing the abutment of the plug body 18 relative to the periphery of the vent hole 17, and bringing the vent hole 17 into an open state.

[0135] That is, in the lidded container 1 of the present embodiment, the inner lid 10 is screwed to the container body 2 while being maintained, and the middle plug 11 is screwed to the inner lid 10 to open the vent hole 17 .

[0136] Therefore, even if the inner cover 10 is pressed against the outer cover 9 (middle plug 11) due to the increase in pressure inside the container body 2, or the inner cover 10 is pulled toward the inside of the container body 2 due to the decrease in pressure inside the container body 2, the middle plug 11 can be released from the inner cover 10 without being affected, thereby easily opening the vent hole 1.

[0137] In addition, in the covered container 1 of the present embodiment, after the vent hole 17 is opened, the first internal thread portion 7 and the first external thread portion 12 are released from the screw connection between the container body 2 and the inner cover 10, thereby preventing the inner cover 10 and the outer cover 9 (middle plug 11) from flying upward due to the increase in pressure in the container body 2, thereby allowing the cover body 3 to be safely removed from the container body 2.

[0138] Therefore, in the container with lid 1 of the present embodiment, even when the pressure in the container body 2 increases or when the pressure in the container body 2 decreases, the lid 3 can be easily and safely removed.

[0139] In addition, as a case where the pressure in the container body 2 rises (becomes positive pressure), for example, when a high-temperature content is put into the container body 2, or when the content in the container body 2 generates gas due to decay, etc. On the other hand, as a case where the pressure in the container body 2 decreases (becomes negative pressure), for example, when a high-temperature content is put into the container body 2 and the content becomes cool, etc. can be listed.

[0140] In addition, the present invention is not necessarily limited to the above-mentioned embodiment, and various modifications can be added within the scope not departing from the gist of the present invention.

[0141] For example, in the above-mentioned container with a lid 1, a structure is formed in which the inner lid 10 temporarily fixed to the middle plug 11 via the above-mentioned temporary fixing mechanism 19 is embedded in the inner side of the container body 2, but it is also possible to rotate the outer lid 9 in the closing direction from the state in which the middle plug 11 is embedded in the inner side of the inner lid 10 after the inner lid 10 is embedded in the inner side of the container body 2 from the opening portion 2a.

[0142] In this case, the outer cover 9 is rotated in the closing direction, and after the first internal thread portion 7 and the first external thread portion 12 start to be screwed together, the water stop washer 13 abuts against the protrusion 8, and the second internal thread portion 15 and the second external thread portion 16 start to be screwed together. Then, the screwing of the second internal thread portion 15 and the second external thread portion 16 is terminated, and the above Figure 7 The same as the case shown, the inner cover 10 is mounted on the middle plug 11 at the mounting position.

[0143] After the second internal thread portion 15 and the second external thread portion 16 are screwed together, the outer cover 9 is further rotated in the closing direction, whereby the inner cover 10 and the outer cover 9 are integrally rotated in the closing direction, and the screwing of the first internal thread portion 7 and the first external thread portion 12 is terminated. Figure 8 The case shown is the same as that in which the cover 3 is attached to the container body 2 .

[0144] Furthermore, even if the middle plug 11 deviates from the temporary fixing position relative to the inner cover 10 in the circumferential direction when the middle plug 11 is inserted into the inner side of the inner cover 10, the inner cover 10 is temporarily fixed relative to the middle plug 11 at the temporary fixing position by rotating the outer cover 9 in the closing direction. Therefore, from this state, the cover body 3 can be attached to the container body 2 by further rotating the outer cover 9 in the closing direction.

[0145] In addition, in the above-mentioned container with a lid 1, the above-mentioned temporary fixing mechanism 19 can also be omitted. In this case, after the inner lid 10 is inserted into the inner side of the container body 2 from the opening 2a, the middle plug 11 is inserted into the inner side of the inner lid 10. Then, from this state, by rotating the outer lid 9 in the closing direction, the first internal thread portion 7 and the first external thread portion 12 start to be screwed together, so that the water stop gasket 13 and the protrusion 8 abut, and then the second internal thread portion 15 and the second external thread portion 16 start to be screwed together. Then, the screwing of the second internal thread portion 15 and the second external thread portion 16 is terminated, thereby forming a state in which the inner lid 10 is mounted on the middle plug 11 at the mounting position.

[0146] After the second internal thread 15 and the second external thread 16 are screwed together, the outer cover 9 is further rotated in the closing direction, whereby the inner cover 10 and the outer cover 9 are integrally rotated in the closing direction, and the screwing of the first internal thread 7 and the first external thread 12 is completed. Thus, the cover body 3 is mounted on the container body 2.

[0147] On the other hand, when the cover body 3 is installed on the container body 2, the outer cover 9 is rotated in the opening direction, whereby the middle plug 11 and the outer cover 9 are rotated in the opening direction relative to the inner cover 10 as a whole, and the screwing of the second internal thread portion 15 and the second external thread portion 16 is released.

[0148] Then, from this state, the outer cover 9 is further rotated in the opening direction, whereby the inner circumferential side abutment portion 26 of the anti-rotation mechanism 24 abuts against the outer circumferential side abutment portion 25, so that the inner cover 10 and the outer cover 9 rotate in the opening direction as a whole, and the screwing of the first internal thread portion 7 and the first external thread portion 12 is released.

[0149] This allows the lid 3 to be removed from the container body 2 . In this case, after the outer lid 9 is removed from the container body 2 , the inner lid 10 is removed from the container body 2 .

[0150] In addition, in the above-mentioned container with a lid 1, the water-stop gasket 13 is configured to be in a state of abutting against the protrusion 8 after the above-mentioned first internal thread portion 7 and the first external thread portion 12 start to be screwed together, but it can also be configured so that the inner cover 10 temporarily fixed to the middle plug 11 by the temporary fixing mechanism 19 is embedded into the inner side of the container body 2 from the opening portion 2a, thereby the water-stop gasket 13 is in a state of abutting against the protrusion 8.

[0151] In the case of this structure, from this state, the outer cover 9 is rotated in the closing direction, thereby starting the screwing of the second internal thread portion 15 and the second external thread portion 16. Then, the screwing of the second internal thread portion 15 and the second external thread portion 16 is terminated, thereby achieving a state in which the inner cover 10 is mounted on the middle plug 11 at the mounting position.

[0152] After the second internal thread portion 15 and the second external thread portion 16 are screwed together, the first internal thread portion 7 and the first external thread portion 12 are screwed together. Then, from this state, the outer cover 9 is further rotated in the closing direction, whereby the inner cover 10 and the outer cover 9 are integrally rotated in the closing direction, and the screwing of the first internal thread portion 7 and the first external thread portion 12 is completed. Thus, the cover body 3 is attached to the container body 2.

[0153] On the other hand, from the state where the cover body 3 is mounted on the container body 2, the outer cover 9 is rotated in the opening direction, whereby the middle plug 11 and the outer cover 9 are integrally rotated in the opening direction relative to the inner cover 10, and the screwing of the second internal thread portion 15 and the second external thread portion 16 is released. As a result, the inner cover 10 is temporarily fixed to the middle plug 11 at the temporary fixing position.

[0154] Then, from this state, the outer cover 9 is further rotated in the opening direction, whereby the inner circumferential side abutment portion 26 of the anti-rotation mechanism 24 abuts against the outer circumferential side abutment portion 25, so that the inner cover 10 and the outer cover 9 rotate in the opening direction as a whole, releasing the screwing of the first internal thread portion 7 and the first external thread portion 12.

[0155] This allows the lid 3 to be removed from the container body 2. That is, the inner lid 10 and the outer lid 9 can be removed from the container body 2 while the inner lid 10 is temporarily fixed to the middle plug 11 by the temporary fixing mechanism 19.

[0156] In this structure, after the inner cover 10 is inserted into the container body 2 from the opening 2a, the outer cover 9 can be rotated in the closing direction from the state where the middle plug 11 is inserted into the inner side of the inner cover 10. In addition, a structure in which the temporary fixing mechanism 19 is omitted can also be formed.

[0157] In addition, in the above-mentioned container with a lid 1, a structure is formed in which the vent hole 17 provided in the inner cover 10 is blocked by the plug body 18 installed on the above-mentioned middle plug 11, but a structure can also be formed in which an elastic component provided with a vent hole is installed on the inner cover 10 so that the protrusion of the plug body provided on the middle plug 11 abuts against the elastic component, thereby blocking the vent hole.

[0158] In addition, the present invention can be appropriately applied to a covered container having a heat preservation and cold preservation function by virtue of a container body having the above-mentioned vacuum insulation structure, but the present invention can be widely applied to a covered container having a container body provided with the above-mentioned opening and a lid body for opening and closing the opening.

Claims

1. A container with a cover, characterized in that: have: A container body having an opening at the top, and a cover for opening and closing the opening, The cover body has: an outer cover covering the opening, An inner cover inserted into the inner side of the container body from the opening, a sealing member for sealing between the container body and the inner cover in a state of being attached to the outer periphery of the inner cover, a middle plug located at the inner center of the outer cover and embedded in the inner side of the inner cover, and A plug body is located at the center of the bottom surface of the middle plug and blocks the vent hole provided at the center of the inner cover. The inner cap is detachably mounted on the container body by screwing a first internal thread portion provided on the inner periphery of the container body and a first external thread portion provided on the outer periphery of the inner cap, and The inner cover is detachably mounted on the middle plug by screwing a second internal thread portion provided on the inner peripheral portion of the inner cover with a second external thread portion provided on the outer peripheral portion of the middle plug. A temporary fixing mechanism is provided for temporarily fixing the inner cover relative to the middle plug at a temporary fixing position where the screwing of the second internal thread portion and the second external thread portion starts. Before the second internal threaded portion and the second external threaded portion begin to be screwed together, the inner cover is mounted relative to the middle bolt by screwing the second internal threaded portion and the second external threaded portion together, starting from a state where the inner cover is temporarily fixed relative to the middle bolt by the temporary fixing mechanism. On the other hand, from the state where the cover body is mounted on the container body, the outer cover is rotated in the opening direction, whereby the screwing engagement between the second internal thread portion and the second external thread portion is released, and the inner cover is temporarily fixed to the middle plug at the temporary fixing position. In a state where the inner cover is temporarily fixed to the middle plug by the temporary fixing mechanism, the cover body is in a state where it can be removed from the container body.

2. The container with a lid according to claim 1, characterized in that: After the second internal thread portion and the second external thread portion are released from being screwed together, the inner cover is rotated in an opening direction integrally with the outer cover from a state in which an inner circumferential side abutting portion provided on the inner circumference of the inner cover abuts against an outer circumferential side abutting portion provided on the outer circumference of the middle plug, thereby releasing the screwing of the first internal thread portion and the first external thread portion.

3. The container with a lid according to claim 1 or 2, characterized in that: At the position where the screwing of the second internal thread portion and the second external thread portion is released, the contact of the plug body with the periphery of the vent hole is released, whereby the vent hole is opened.

4. The container with a lid according to claim 1 or 2, characterized in that: A click mechanism is provided for providing a click feeling during the period when the screwing engagement between the second internal thread portion and the second external thread portion is completed.

5. The container with a cover according to claim 4, characterized in that: The click mechanism includes an outer engaging convex portion provided on the outer cover and an inner engaging convex portion provided on the inner cover, and provides a click feeling when one of the outer engaging convex portion and the inner engaging convex portion passes over the other.

6. The container with a cover according to claim 5, characterized in that: The click mechanism includes a second elastic piece provided on the inner cover and capable of elastically deforming in a direction of reducing the diameter of the inner cover. The inner engaging protrusion is provided on the second elastic piece.

7. The container with a cover according to claim 5 or 6, characterized in that: When the outer cover is rotated in the opening direction, the resistance force when one of the outer engaging protrusion and the inner engaging protrusion passes over the other is greater than when the outer cover is rotated in the closing direction.

8. The container with a lid according to any one of claims 1, 2, 5 and 6, characterized in that: The container body has a vacuum insulation structure.

9. The container with a cover according to claim 3, characterized in that: The container body has a vacuum insulation structure.

10. The container with a cover according to claim 4, characterized in that: The container body has a vacuum insulation structure.

11. The container with a cover according to claim 7, characterized in that: The container body has a vacuum insulation structure.

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