Cap unit and container with cap

Abstract

To provide a cap unit capable of inhibiting a water stop packing from deeply entering into an overhang part with a simple structure, and a container with a cap.SOLUTION: A cap unit comprises: a lid body 11 provided with an inside plug 12 which is fitted into the inside of a container body 2 from an upper opening part 2d of the container body 2 with an open top; and a water stop packing 16 for sealing a space between an overhang part 9 provided inside the container body 2 and the inside plug 12 in a state of being attached to an outer periphery part of the inside plug 12 over the entire circumference. The lid body 11 has a structure for closing the upper opening part 2d, and the lid body 11 has an abutting part 21 which is arranged at a lower part of the inside plug 12 and abuts on the overhang part 9 from the upper side.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a cap unit and a container with a cap. [Background technology]

[0002] Known conventional cap units include those described in Patent Documents 1 to 3. The cap unit includes a lid provided with an inner plug that is fitted into the upper opening of a container body, and a watertight gasket that is attached to the outer periphery of the inner plug and seals the gap between the inner plug and a protruding portion provided on the inside of the container body, and the lid is attached by screwing the female thread of the container body and the male thread of the inner plug together, and has a structure that closes the upper opening of the container body.

[0003] In Patent Document 1, the water stop gasket is in contact with the protruding portion from above and is structured to fit inside the protruding portion. In this case, if the user turns the lid too much in the closing direction (screws it in too much) when closing the upper opening of the container body with the lid, the water stop gasket will elastically deform and penetrate deep into the protruding portion, which may increase the opening torque when the bottle is opened next time. In addition, for example, when the temperature of a high-temperature beverage stored in the container body is reduced, the pressure inside the container body is reduced, and a downward pulling force acts on the inner plug and the water stop gasket, which may cause the water stop gasket to penetrate deep into the protruding portion. In addition, if the water stop gasket is in a state where it is deeply inserted into the protruding portion and the inner plug expands in diameter due to thermal expansion, the opening torque tends to increase more easily.

[0004] Therefore, in Patent Document 2, the lower end of the peripheral wall of the outer lid is brought into contact with the shoulder of the outer container from above, thereby preventing the watertight gasket from penetrating too deeply into the protruding portion. In Patent Document 3, the upper end (periphery) of the upper opening of the container body is brought into contact with the underside of the upper wall of the outer lid, thereby preventing the watertight gasket from penetrating too deeply into the protruding part. In Patent Document 3, in order to prevent the upper end of the upper opening of the container body from biting into the underside of the upper wall of the outer lid when the container is closed, either the outer container or the inner container is folded (rolled) and welded at the upper end of the upper opening. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2020-186014 A [Patent Document 2] JP 2020-193036 A [Patent Document 3] JP 2020-189678 A Summary of the Invention [Problem to be solved by the invention]

[0006] With this type of cap unit, there was room for improvement in terms of being able to prevent the water-stopping gasket from penetrating too deeply into the protruding portion through a simple structure, regardless of the degree to which the lid body is screwed in when closing or fluctuations in the internal pressure of the container body.

[0007] One of the objects of the present invention is to provide a cap unit and a capped container that can prevent the water-stopping gasket from penetrating too deeply into the protruding portion using a simple structure. [Means for solving the problem]

[0008] One aspect of the cap unit of the present invention includes a lid provided with an inner plug that is fitted into an upper opening of a container body having an open top, and a watertight gasket that is attached to the outer periphery of the inner plug over the entire circumference and seals between the inner plug and a protruding portion provided on the inside of the container body, the lid having a structure that closes the upper opening, the lid being disposed under the inner plug and having an abutment portion that abuts against the protruding portion from above. and a step portion located below the abutment portion and above the water-stopping gasket, the step portion facing the protrusion portion and recessed inwardly from the abutment portion so as to be out of contact with the protrusion portion. In addition, one aspect of the cap unit of the present invention comprises a lid body provided with a stopper that is fitted into the inside of a container body through the upper opening of the container body, which has an open top, and a water-stop gasket that is attached around the entire outer periphery of the stopper and seals the gap between the protrusion provided on the inside of the container body and the stopper, wherein the lid body has a structure that blocks the upper opening, the lid body is positioned below the stopper and has an abutment portion that abuts against the protrusion from above, and the stopper is attached to the container body by screwing a male threaded portion provided on the outer periphery of the stopper into a female threaded portion provided on the inner periphery of the container body. In addition, one aspect of the cap unit of the present invention comprises a lid body provided with a stopper that is fitted into the inside of a container body through the upper opening of the container body which is open at the top, and a water-stopping gasket that is attached around the entire outer periphery of the stopper and seals the gap between the stopper and a protrusion provided on the inside of the container body, wherein the lid body has a structure that closes the upper opening, the lid body is positioned below the stopper and has an abutment portion that abuts against the protrusion portion from above, and the abutment portion is provided to protrude integrally with the stopper.

[0009] In the above cap unit, it is preferable that the abutment portion is formed to extend in a circumferential direction.

[0012] In the above cap unit, it is preferable that the lid body has a canopy connected to the upper end of the inner plug and having an outer diameter dimension larger than that of the inner plug, the canopy being positioned above the upper opening, and a gap being provided between the canopy and the upper opening when the abutment portion abuts against the protrusion portion.

[0013] In the above cap unit, it is preferable that an outer diameter of the lid is smaller than an outer diameter of the container body and larger than an inner diameter of the upper opening.

[0014] Moreover, one aspect of a capped container of the present invention comprises the above-mentioned cap unit and the container body to which the cap unit is attached.

[0015] In the above-mentioned capped container, the container body preferably has a vacuum insulation structure. Effect of the Invention

[0016] According to one aspect of the cap unit and capped container of the present invention, the watertight gasket can be prevented from penetrating too deeply into the protruding portion by using a simple structure. [Brief description of the drawings]

[0017] [Figure 1] FIG. 1 is a perspective view showing a capped container according to one embodiment of the present invention. [Diagram 2] FIG. 2 is a cross-sectional view showing a portion of a capped container. [Diagram 3] FIG. 3 is a side view showing a portion of a capped container. [Figure 4] FIG. 4 is a perspective view showing a lid of the cap unit. [Diagram 5] FIG. 5 is a perspective view showing a lid of the cap unit. [Figure 6] FIG. 6 is a bottom view showing the lid of the cap unit. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] A cap unit 1 and a capped container 100 according to one embodiment of the present invention will be described with reference to the drawings. As shown in Figures 1 and 2, the capped container 100 according to this embodiment includes a cap unit 1, a cylindrical container body 2 with a bottom to which the cap unit 1 is detachably attached, and a cup 3 that is detachably attached to the container body 2 while covering the cap unit 1. The cap unit 1, the container body 2 and the cup 3 are arranged coaxially with each other about a central axis C.

[0019] In this embodiment, the direction in which the central axis C extends is referred to as the up-down direction. In the up-down direction, the direction from the bottom surface 2a of the container body 2 to the cup 3 is referred to as the upper side, and the direction from the cup 3 to the bottom surface 2a is referred to as the lower side. The direction perpendicular to the central axis C is called the radial direction. Of the radial directions, the direction approaching the central axis C is called the radially inner direction or simply the inner direction, and the direction away from the central axis C is called the radially outer direction or simply the outer direction. The direction going around the central axis C is called the circumferential direction.

[0020] The capped container 100 is a beverage container capable of keeping a beverage (liquid) contained in the container body 2 hot or cold by the container body 2 having a vacuum insulation structure. The container body 2 is a cylindrical shape with a bottom and an open top. Note that the container body 2 may contain contents other than a beverage.

[0021] Specifically, the container body 2 has a bottomed cylindrical outer container 4 and inner container 5 made of, for example, stainless steel, and is configured as a double-structure container in which the mouths of the two containers are joined together with the inner container 5 housed inside the outer container 4. The upper cylindrical end portion of the inner container 5 fits into the upper cylindrical end portion of the outer container 4, and the upper cylindrical end portions are welded together in this fitted state. As a result, the upper opening 2d of the container body 2 has a pointed shape known as a "bowing welded structure" as shown in Figure 2.

[0022] In addition, a vacuum insulation layer 6 is provided between the outer container 4 and the inner container 5. The vacuum insulation layer 6 can be formed, for example, by blocking a vent hole provided in the center of the bottom surface of the outer container 4 in a chamber that has been depressurized (evacuated) to a high vacuum.

[0023] 1 and 2, the container body 2 has a substantially circular bottom surface 2a, a body portion 2b standing in a substantially cylindrical shape from the outer periphery of the bottom surface 2a, and a substantially cylindrical mouth-neck portion 2c whose diameter is reduced on the upper side of the body portion 2b. The upper end of the mouth-neck portion 2c opens in a circular shape as an upper opening portion 2d of the container body 2.

[0024] As shown in Fig. 2, the inner circumference of the mouth-neck portion 2c is smaller in diameter than the inner circumference of the body portion 2b. A male thread portion 7 is provided on the outer circumference of the mouth-neck portion 2c. Meanwhile, a female thread portion 8 is provided on the inner circumference of the mouth-neck portion 2c. Furthermore, below the female thread portion 8, a protruding portion 9 is provided on the inside of the container body 2.

[0025] The protruding portion 9 protrudes radially inward from the inner peripheral surface of the container body 2 and extends around the entire circumference in the circumferential direction. The protruding portion 9 is annular about the central axis C. The protruding portion 9 has an upper inclined surface 9a, a cylindrical surface 9b, and a lower inclined surface 9c.

[0026] The upper inclined surface 9a is located at the upper end of the protruding portion 9. The upper inclined surface 9a is connected to the inner circumferential lower end of the mouth and neck portion 2c, and is located radially inward as it moves downward from the connection portion with the mouth and neck portion 2c. The upper inclined surface 9a is tapered so that its diameter decreases as it moves downward.

[0027] The cylindrical surface 9b is connected to the lower end of the upper inclined surface 9a and extends in the up-down direction. The cylindrical surface 9b is cylindrical with the center on the central axis C. The shape of the cylindrical surface 9b is not limited to the above-mentioned shape, and may be, for example, a shape in which the diameter decreases toward the lower side. In this case, the cylindrical surface 9b may be referred to as a tapered surface 9b. The lower inclined surface 9c is connected to the lower end of the cylindrical surface 9b and is positioned radially outward as it extends downward from the connection with the cylindrical surface 9b. The lower inclined surface 9c has a tapered shape that increases in diameter as it extends downward.

[0028] The cup 3 is made of a heat-resistant resin such as polypropylene, and has a substantially circular bottom wall 3a and a cylindrical peripheral wall 3b rising upward (downward in Figs. 1 and 2) from the periphery of the bottom wall 3a, and is formed into a bottomed cylindrical shape as a whole. Furthermore, a cover made of, for example, stainless steel is attached to the cup 3 by adhesive or the like. That is, in this embodiment, the cup 3 has a double cylindrical structure, and specifically, a bottomed cylindrical member on the inner surface side of the cup 3 is made of heat-resistant resin, and a bottomed cylindrical member on the outer surface side of the cup 3 is made of stainless steel, and these members are integrated with each other by adhesion or the like in a fitted state.

[0029] The cup 3 is detachably attached by screwing to the outside of the mouth / neck portion 2c of the container body 2 with the bottom wall portion 3a facing upward (upside-down position). For this reason, a female screw portion 10 that screws into the male screw portion 7 is provided on the inner periphery of the peripheral wall portion 3b.

[0030] Although the capped container 100 of this embodiment has a generally cylindrical external shape as a whole, the external shape of the capped container 100 is not particularly limited and can be modified as appropriate according to the size, design, etc. In addition, the outer circumferential surfaces of the container body 2 and the cup 3 may be painted, printed, or the like.

[0031] 2 to 6, the cap unit 1 of this embodiment includes a lid 11 that closes the upper opening 2d of the container body 2. The lid 11 is made of a heat-resistant resin such as polypropylene, and includes an inner plug 12 that is fitted into the inside of the container body 2 from the upper opening 2d of the container body 2, and a top cover 13 that is connected to the upper end of the inner plug 12 and has an outer diameter larger than that of the inner plug 12.

[0032] The lid body 11 has a substantially cylindrical lower lid member 14a with a bottom that constitutes a part (outer periphery) of the lid 13 and the inside plug 12, and a substantially disk-shaped upper lid member 14b that constitutes another part (part inside the outer periphery) of the lid 13. The lid body 11 is configured such that the lower lid member 14a is integrally attached to the lower surface of the upper lid member 14b by ultrasonic welding, high-frequency welding, or the like. In this embodiment, the inside of the lid body 11 is configured to have a heat insulating material S arranged therein, but it may be air that serves as a heat insulating layer.

[0033] The inner stopper 12 has an outer periphery provided with a male thread portion 15 that screws into the female thread portion 8 of the container body 2. The lid body 11 is detachably attached to the container body 2 by screwing the female thread portion 8 into the male thread portion 15. Therefore, the cap unit 1 of this embodiment has a structure in which the lid body 11 attached by screwing the female thread portion 8 into the male thread portion 15 closes the upper opening 2d of the container body 2.

[0034] In the present embodiment, the capped container 100 is configured such that the male thread 15 provided on the inner plug 12 is attached to the female thread 8 of the container body 2 by screwing, but is not limited thereto. Although not particularly shown, the lid 13 may be provided with a cylindrical peripheral wall extending downward from the outer periphery of the lid 13, and the female thread provided on the inner periphery of the peripheral wall of the lid 13 and the male thread 7 provided on the outer periphery of the mouth neck portion 2c of the container body 2 may be attached by screwing, so that the lid 11 closes the upper opening 2d of the container body 2.

[0035] As shown in Fig. 2, a waterproof gasket 16 is detachably attached to the lower end of the inside plug 12. In other words, the cap unit 1 is equipped with the waterproof gasket 16. The waterproof gasket 16 is a ring-shaped sealing member made of an elastic material such as heat-resistant rubber, elastomer, etc., such as silicone rubber. Meanwhile, a flange portion 12a is provided on the lower end of the inside plug 12, protruding in the radial expansion direction (diametrically outward) around the entire circumference. The waterproof gasket 16 is fitted around the entire circumference of this flange portion 12a.

[0036] In addition, a plurality of elastic flange portions 16a (two in this embodiment) arranged in the vertical direction are provided on the outer peripheral surface of the water stop packing 16 so as to protrude in the radially expanding direction around the entire circumference. When the lid body 11 is attached to the container body 2, the water stop packing 16 is in a state where it is in close contact with the protruding portion 9 of the container body 2 around the entire circumference while the elastic flange portions 16a are elastically deformed. This allows the water stop packing 16 to seal the gap between the protruding portion 9 (container body 2) and the inner plug 12 in a state where it is attached to the outer peripheral portion of the inner plug 12 around the entire circumference. Note that the shape of the water stop packing 16 for intimate contact with the protruding portion 9 is not necessarily limited to the shape of the elastic flange portions 16a described above, and the shape, number, etc. can be appropriately changed.

[0037] On the other hand, the water stop gasket 16 can be removed from the flange portion 12a by elastically deforming (pulling and stretching) the water stop gasket 16. This allows the water stop gasket 16 and the inner plug 12 to be washed separately, and the space between the water stop gasket 16 and the inner plug 12 can be kept hygienic.

[0038] The watertight gasket 16 is not limited to being detachably attached to the inner plug 12 as described above, but may be attached integrally to the inner plug 12 by being integrally molded with the inner plug 12 or by being bonded thereto.

[0039] As shown in Figs. 4 to 6, the cover 11 has a first liquid passage groove 17 and a second liquid passage groove 18 at opposing positions on the outer periphery of the inside plug 12. The first liquid passage groove 17 and the second liquid passage groove 18 are arranged at positions rotationally symmetrical with each other by 180° about the central axis C. The first liquid passage groove 17 and the second liquid passage groove 18 have a pair of side surfaces 17b, 18b that rise up parallel to each other from both sides in the circumferential direction sandwiching the respective bottom surfaces 17a, 18a, and are provided so as to cut out the male screw portion 15 across the outer periphery of the inside plug 12 in the vertical direction.

[0040] The first liquid passage groove 17 and the second liquid passage groove 18 are provided by cutting out a portion of the underside of the canopy 13. Therefore, the upper ends of the first liquid passage groove 17 and the second liquid passage groove 18 are located approximately in the center in the up-down direction of the canopy 13. The lower ends of the first liquid passage groove 17 and the second liquid passage groove 18 are located at the lower part of the inner plug 12, and open downward.

[0041] The first liquid passage groove 17 and the second liquid passage groove 18 are different in size from each other. That is, the first liquid passage groove 17 and the second liquid passage groove 18 are different in width dimension in the circumferential direction from each other. Specifically, the width dimension of the first liquid passage groove 17 is smaller than the width dimension of the second liquid passage groove 18.

[0042] Additionally, a plurality of anti-slip protrusions 20 are provided on the outer periphery of the canopy 13. The plurality of anti-slip protrusions 20 are provided in a line in the circumferential direction. Note that the anti-slip structure of the canopy 13 is not limited to the one provided with a plurality of anti-slip protrusions 20 as described above, and can be modified as appropriate.

[0043] As shown in Fig. 2, the canopy 13 is a flattened cylinder or disk with a small vertical dimension. The canopy 13 is located above the upper opening 2d. The outer periphery of the canopy 13 overlaps with the upper opening 2d when viewed from the vertical direction. The outer diameter of the canopy 13 is smaller than the outer diameter of the container body 2 (outer container 4) and larger than the inner diameter of the upper opening 2d. In this embodiment, the canopy 13 and the upper opening 2d (mouth neck portion 2c) have approximately the same diameter.

[0044] The lid 11 also has a contact portion 21 and a step portion 22 . The abutment portion 21 is disposed at the lower part of the inside plug 12 and abuts against the overhanging portion 9 from above. Specifically, the abutment portion 21 is disposed at the lower part of the outer periphery of the inside plug 12, below the male thread portion 15 and above the flange portion 12a, and contacts the upper inclined surface 9a of the overhanging portion 9 from above. The abutment portion 21 is disposed between the male thread portion 15 and the water stop gasket 16 in the vertical direction. The outer diameter of the abutment portion 21 is smaller than the outer diameter of the male thread portion 15 and larger than the outer diameter of the flange portion 12a. In this embodiment, the outer diameter of the abutment portion 21 is larger than the outer diameter of the water stop gasket 16 in a state where it is not elastically deformed. As shown in FIG. 2, in a vertical cross-sectional view parallel to the central axis C, the abutment portion 21 has a convex shape that protrudes radially outward and downward.

[0045] 2 and 3, with the contact portion 21 in contact with the overhanging portion 9, a gap G is provided between the canopy 13 and the upper opening 2d in the vertical direction. The gap G is provided over the entire circumferential direction around the central axis C. In this embodiment, the vertical dimension of the gap G is constant along the circumferential direction in the portions other than the liquid passage grooves 17, 18.

[0046] 4 to 6, the contact portion 21 is formed to extend in the circumferential direction. In this embodiment, the contact portion 21 extends in an arc shape at the outer circumferential lower end portion of the inside plug 12 so as to be divided into the liquid passage grooves 17, 18.

[0047] The step portion 22 is disposed at the lower part of the inside plug 12. Specifically, as shown in FIG. 2, the step portion 22 is disposed in the lower part of the outer periphery of the inside plug 12, below the abutment portion 21 and above the water stop gasket 16. The step portion 22 is disposed adjacent to the lower side of the abutment portion 21. The step portion 22 is recessed inward from the abutment portion 21. The step portion 22 faces the upper inclined surface 9a of the overhanging portion 9 with a gap therebetween. In other words, the step portion 22 is not in contact with the overhanging portion 9.

[0048] 4 to 6, the step 22 is formed to extend in the circumferential direction. In this embodiment, the step 22 extends in an arc shape at the outer circumferential lower end of the inside plug 12 so as to be divided into the liquid passage grooves 17, 18.

[0049] According to the cap unit 1 and capped container 100 of this embodiment described above, when the inside plug 12 is fitted into the upper opening 2d of the container body 2, the watertight gasket 16 seals the space between the inside plug 12 and the protruding portion 9, and the abutment portion 21 of the lid 11 abuts against the protruding portion 9 from above. From this abutting state, the inside plug 12 is restricted from moving further downward within the upper opening 2d, preventing the watertight gasket 16 from penetrating too deeply into the protruding portion 9. The sealing position in the vertical direction by the watertight gasket 16 is kept constant, stabilizing the hermeticity (sealing ability).

[0050] Specifically, when a user closes the upper opening 2d of the container body 2 with the lid body 11, the abutment portion 21 comes into contact with the protruding portion 9 from above, thereby preventing the lid body 11 from being turned too far in the closing direction (screwed in too far). Even if the temperature of the high-temperature beverage stored in the container body 2 drops and the pressure inside the container body 2 decreases, causing a downward pulling force to act on the inner plug 12 and the water stop gasket 16, the abutment portion 21 comes into contact with the protruding portion 9 from above, thereby preventing the water stop gasket 16 from penetrating too deeply into the protruding portion 9. Therefore, according to this embodiment, the simple structure can prevent strong contact between the watertight gasket 16 and the protrusion portion 9, and can prevent an increase in opening torque when the lid body 11 is then turned in the opening direction to open it.

[0051] Furthermore, since the abutment portion 21 is configured to abut against the overhanging portion 9, the upper end (periphery) of the upper opening 2d of the container body 2 and the lower surface of the canopy 13 of the lid body 11 can be kept out of contact with each other. For example, even if the upper end (the connection portion between the outer container 4 and the inner container 5) of the upper opening 2d of the container body 2 has a pointed shape known as a "bow welded structure" as in this embodiment, this upper end can be positioned downward and away from the canopy 13, so that the phenomenon of this upper end biting into the lower surface of the canopy 13 can be suppressed. In addition, in order to suppress such a jamming phenomenon, there is no need to adopt a complex structure such as bending (rolling) and welding either the outer container 4 or the inner container 5 at the upper end of the upper opening 2d, which simplifies the manufacturing process.

[0052] In this embodiment, the contact portion 21 is formed to extend in the circumferential direction. In this case, when the lid body 11 is resin-molded, the mold can be easily removed after molding, and manufacturing is easy. Also, by bringing the abutment portion 21 into contact with the protrusion portion 9 along the circumferential direction, the function of the abutment portion 21 becomes more stable.

[0053] Furthermore, in this embodiment, by providing step portion 22 below contact portion 21 and above watertight packing 16, the contact area between contact portion 21 and protruding portion 9 can be reduced. This makes it possible to prevent contact between contact portion 21 and protruding portion 9 from coming into strong contact due to, for example, reduced pressure inside container body 2 or thermal expansion of inner plug 12, and more stably suppresses an increase in plug opening torque.

[0054] Furthermore, in this embodiment, the contact portion 21 contacts the protruding portion 9 from above, so that the depth to which the inside plug 12 penetrates into the container body 2 is stable. This allows a certain gap G to be provided between the upper opening 2d of the container body 2 and the lid 13. Providing such a gap G prevents a user's fingers from getting caught between the upper opening 2d of the container body 2 and the lid 13 when performing the plugging operation, and the rotation operation is simplified, improving operability.

[0055] In this embodiment, the outer diameter of the lid 13 is smaller than the outer diameter of the container body 2 and larger than the inner diameter of the upper opening 2d. In this case, the canopy 13 can be made compact while maintaining good operability when a user grips the canopy 13 and rotates the cap unit 1. Note that, as in this embodiment, if the canopy 13 and the upper opening 2d have approximately the same diameter, the cup 3 can be made compact and the outer circumferential surface of the cup 3 and the outer circumferential surface of the container body 2 (outer container 4) can be formed approximately flush, which is more preferable.

[0056] The present invention is not limited to the above-described embodiment, and the configuration may be modified within the scope of the present invention, for example as described below.

[0057] In the above embodiment, the contact portion 21 extends in the circumferential direction, but the present invention is not limited to this. The contact portion 21 may be disposed in the lower portion of the inside plug 12 and may have a protruding shape that contacts the protruding portion 9 from above. Furthermore, a plurality of the contact portions 21 may be provided, for example, arranged at equal intervals in the circumferential direction. Furthermore, the contact portion 21 may be in a spiral shape, or the like, whose vertical position changes along the circumferential direction.

[0058] In the above embodiment, an example was given in which the present invention was applied to a capped container 100 having a heat retention / cold retention function provided by a container body 2 having a vacuum insulation structure, but the present invention is not limited to this. That is, the present invention can be widely applied to capped containers in which a cap unit is detachably attached to the mouth and neck portion of a container body.

[0059] The present invention may be combined with the various configurations described in the above-mentioned embodiments and modifications, and may include additions, omissions, substitutions, and other modifications, without departing from the spirit of the present invention. The present invention is not limited to the above-mentioned embodiments, but is limited only by the claims. [Explanation of symbols]

[0060] 1...cap unit, 2...container body, 2d...upper opening, 8...female thread portion, 9...projection portion, 11...lid body, 12...inner plug, 13...top, 15...male thread portion, 16...watertight packing, 21...contact portion, 22...step portion, 100...container with cap, G...gap

Claims

1. a lid provided with an inner plug that is fitted into the inside of the container body through an upper opening of the container body; a watertight gasket that is attached to the outer periphery of the inside plug over the entire circumference thereof to seal between the inside plug and a protruding portion provided on the inside of the container body; The lid has a structure for closing the upper opening, The lid body is a contact portion disposed at a lower portion of the inside plug and contacting the protruding portion from above; a step portion disposed below the abutment portion and above the watertight packing, The step portion faces the protruding portion, is recessed inward from the contact portion, and is not in contact with the protruding portion. Cap unit.

2. A container body having an open top, the container body having a lid body provided with an inner plug that is fitted into the container body from an upper opening of the container body; a watertight gasket that is attached to the outer periphery of the inside plug over the entire circumference thereof to seal between the inside plug and a protruding portion provided on the inside of the container body; The lid has a structure for closing the upper opening, the lid body is disposed under the inside plug and has an abutment portion that abuts against the protruding portion from above, The inside plug is attached to the container body by screwing a male screw portion provided on an outer periphery of the inside plug into a female screw portion provided on an inner periphery of the container body. Cap unit.

3. A lid body having an inner plug that is fitted into the inside of a container body from an upper opening of the container body, a watertight gasket that is attached to the outer periphery of the inside plug over the entire circumference thereof to seal between the inside plug and a protruding portion provided on the inside of the container body; The lid has a structure for closing the upper opening, the lid body is disposed under the inside plug and has an abutment portion that abuts against the protruding portion from above, The abutment portion is provided so as to protrude integrally with the inside plug. Cap unit.

4. The abutment portion is formed to extend in a circumferential direction. The cap unit according to any one of claims 1 to 3.

5. The lid body has a top portion connected to an upper end portion of the inside plug and having an outer diameter larger than that of the inside plug, The canopy is located above the upper opening, When the abutment portion is in contact with the protruding portion, a gap is provided between the canopy and the upper opening. The cap unit according to any one of claims 1 to 4.

6. The outer diameter of the cover is smaller than the outer diameter of the container body and larger than the inner diameter of the upper opening. The cap unit according to claim 5 .

7. A cap unit according to any one of claims 1 to 6, The container body to which the cap unit is attached. Container with cap.

8. The container body has a vacuum insulation structure. The capped container according to claim 7.

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