Cap unit and container with cap

Abstract

To provide a cap unit which simplifies a structure in which an inside plug is attached to an external cover, and improves washability of the external cover the inside plug.SOLUTION: A cap unit comprises: an external cover 9 which surrounds un upper part of a container body 2; an inside plug 10 which is fitted in an inner side of the container body 2 from an upper part opening 2a of the container body 2; and a detachment / attachment mechanism 11A which detachably attaches the inside plug 10 to the external cover 9. The detachment / attachment mechanism 11A has a lock part 16 provided on any one of the external cover 9 and the inside plug 10, and a locked part 17 provided on the other, and inserts the inside plug 10 into an opening 9c provided in the upper part of the external cover 9 from an upper side, and in the state that a flange part 10d projecting in a diameter expansion direction from an outer peripheral part on an upper end side of the inside plug 10 is brought into contact with a circumference of the opening 9c of the external cover 9, the lock part 16 is locked to the locked part 17, whereby the inside plug 10 is attached to the external cover 9.SELECTED DRAWING: Figure 2

Description

Technical Field

[0006] ,

[0007] ,

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

Background Art

[0002] [[ID=eleven]] Conventionally, there has been a container with a cap provided with a cap unit (plug body) that closes the upper opening of the container body by being detachably attached to the mouth-neck portion of the container body with an open upper portion (see, for example, Patent Documents 1 and 2 below).

[0003] Such a cap unit has an outer lid that covers the mouth-neck portion of the container body and an inner stopper that is fitted into the container body from the upper opening, and the outer lid or the inner stopper is attached to the cap body by screwing.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] By the way, in the above-described container with a cap, when washing the cap unit, it is very difficult to wash between the outer lid and the inner stopper. For this reason, in the cap unit, a structure that can be divided into an outer lid and an inner stopper is adopted to improve the washability.

[0006] However, in the conventional cap unit, when adopting a structure that can be divided into an outer lid and an inner stopper, there is a problem that the structure (detaching mechanism) for attaching the inner stopper to the outer lid becomes complicated.

[0007] This invention was proposed in view of the above conventional circumstances, and aims to provide a cap unit that simplifies the structure for attaching the inner stopper to the outer lid, thereby improving the cleanability of the outer lid and inner stopper, and a capped container that, by being equipped with such a cap unit, enables further improvements in usability. [Means for solving the problem]

[0008] To achieve the above objective, the present invention provides the following means. [1] A cap unit that can be detachably attached to a container body with an open top, The outer lid surrounds the top of the container body, An inner stopper is fitted into the inside of the container body through the upper opening of the container body, The outer lid is equipped with a detachable mechanism for detachably attaching the inner stopper to the outer lid, The aforementioned detachment mechanism has a locking portion provided on either the outer cover or the inner stopper, and a locked portion provided on the other, A cap unit characterized in that the inner plug is inserted from above into an opening provided in the upper part of the outer lid, and the inner plug is attached to the outer lid by the locking portion being engaged with the locking portion while the flange portion protruding in the expanding direction from the outer circumference of the upper end of the inner plug is in contact with the periphery of the opening of the outer lid. [2] The locking portion includes a plurality of locking protrusions provided around the opening of the outer cover, The locking portion includes a plurality of locking recesses provided on the outer circumference of the inner stopper, The cap unit according to [1], characterized in that the inner stopper is attached to the outer lid by the locking projection being locked into the locking recess. [3] The locking portion includes a plurality of hook portions provided on the outer circumference of the inner stopper, The locking portion includes a plurality of notched recesses provided around the opening of the outer cover, The cap unit according to [1], characterized in that the hook portion is inserted into the inside of the notched recess, and when the inner stopper is rotated about an axis relative to the outer lid, the hook portion is locked with the surrounding area of ​​the notched recess, thereby attaching the inner stopper to the outer lid. [4] The locking portion includes a plurality of plungers provided on the outer circumference of the inner plug, The locking portion includes a plurality of locking recesses and locking protrusions provided around the opening of the outer cover, The cap unit according to [3], characterized in that, at the position in which the hook portion is inserted into the notched recess, the plunger is locked in the locking recess, and by rotating the inner stopper around its axis relative to the outer lid from this state, the plunger overcomes the locking projection and provides a clicking sensation, after which the locking state of the plunger with respect to the locking recess is released. [5] The locking portion includes a plurality of plungers provided on the outer circumference of the inner plug, The cap unit according to [1], characterized in that the inner stopper is attached to the outer lid by locking the plunger to the locking portion. [6] The locking portion includes a locking projection provided around the entire circumference of the opening of the outer cover, The locking portion includes a locking recess provided around the entire circumference of the flange portion. The cap unit according to [1], characterized in that the inner stopper is attached to the outer lid by the locking projection being locked into the locking recess. [7] The detachment mechanism has a positioning engagement portion consisting of a first engagement portion provided on either the outer cover or the inner plug, and a second engagement portion provided on the other of the two. The first engaging portion and the second engaging portion engage, thereby attaching the inner plug to the outer lid. The cap unit according to [5] or [6], characterized in that the outer lid and the inner stopper rotate together when the cap is attached to the container body by screwing. 〔8〕The cap unit according to any one of the above 〔1〕 to 〔7〕, wherein the middle plug or the outer lid is attached to the container body by screwing. 〔9〕The cap unit according to any one of the above 〔1〕 to 〔8〕, further comprising a water stop packing integrally attached to the outer peripheral portion of the lower end side of the middle plug for sealing between the container body and the middle plug. 〔10〕A container with a cap, comprising the cap unit according to any one of the above 〔1〕 to 〔9〕, and a container body to which the cap unit is attached.

Advantages of the Invention

[0009] As described above, according to the present invention, it is possible to provide a cap unit that simplifies the structure of attaching the middle plug to the outer lid and enhances the cleaning properties of the outer lid and the middle plug, and a container with a cap that further improves usability by including such a cap unit.

Brief Description of the Drawings

[0010] [Figure 1] It is a perspective view showing the appearance of a container with a cap provided with the cap unit according to the first embodiment of the present invention. [Figure 2] It is a vertical cross-sectional view showing the configuration of a container with a cap provided with the cap unit shown in FIG. 1. [Figure 3] It is a perspective view showing a state where the middle plug is removed from the outer lid provided in the cap unit shown in FIG. 1. [Figure 4] It is a perspective view of the outer lid provided in the cap unit shown in FIG. 1 as viewed from the lower side. [Figure 5] It is a perspective view of the middle plug provided in the cap unit shown in FIG. 1 as viewed from the lower side. [Figure 6] It is a perspective view of the middle plug provided in the cap unit shown in FIG. 1 as viewed from a further lower side. [Figure 7] It is a perspective view showing the appearance of the cap unit according to the second embodiment of the present invention. [Figure 8] It is a vertical cross-sectional view showing the state in which the middle plug is in the mounting position with respect to the outer lid of the cap unit shown in FIG. 7. [Figure 9] It is a bottom view showing the state in which the middle plug is in the mounting position with respect to the outer lid of the cap unit shown in FIG. 7. [Figure 10] It is a horizontal cross-sectional view showing the state in which the middle plug is in the mounting position with respect to the outer lid of the cap unit by the line segment X-X shown in FIG. 8. [Figure 11] It is a cross-sectional perspective view showing a state in which a part of the state where the middle plug is in the mounting position with respect to the outer lid of the cap unit shown in FIG. 7 is cut out. [Figure 12] It is a perspective view showing the state of the detaching mechanism in the state where the middle plug is in the mounting position with respect to the outer lid of the cap unit shown in FIG. 7. [Figure 13] It is a vertical cross-sectional view showing the state in which the middle plug is in the removed position with respect to the outer lid of the cap unit shown in FIG. 7. [Figure 14] It is a bottom view showing the state in which the middle plug is in the removed position with respect to the outer lid of the cap unit shown in FIG. 7. [Figure 15] It is a horizontal cross-sectional view showing the state in which the middle plug is in the removed position with respect to the outer lid of the cap unit by the line segment XV-XV shown in FIG. 13. [Figure 16] It is a cross-sectional perspective view showing a state in which a part of the state where the middle plug is in the removed position with respect to the outer lid of the cap unit shown in FIG. 7 is cut out. [Figure 17] It is a perspective view showing the state of the detaching mechanism in the state where the middle plug is in the removed position with respect to the outer lid of the cap unit shown in FIG. 7. [Figure 18] It is a perspective view showing the appearance of the cap unit according to the third embodiment of the present invention. [Figure 19] It is a vertical cross-sectional view showing the configuration of the cap unit shown in FIG. 18. [Figure 20] It is a perspective view of the cap unit shown in FIG. 18 as viewed from below. [Figure 21] It is a perspective view showing the state in which the middle plug is removed from the outer lid provided in the cap unit shown in FIG. 18. [Figure 22] Figure 18 is a perspective view showing the configuration of the outer lid of the cap unit. [Figure 23] This is a perspective view showing the appearance of a cap unit according to a fourth embodiment of the present invention. [Figure 24] Figure 23 is a vertical cross-sectional view showing the configuration of the cap unit. [Figure 25] Figure 23 is a perspective view showing the cap unit with the inner stopper removed from the outer lid. [Figure 26] This is a perspective view showing the inner stopper removed from the outer lid of a cap unit according to a fifth embodiment of the present invention. [Figure 27] Figure 26 is a perspective view showing the configuration of the outer lid of the cap unit. [Figure 28] Figure 26 is a perspective view showing the configuration of the inner stopper included in the cap unit. [Modes for carrying out the invention]

[0011] Embodiments of the present invention will be described in detail below with reference to the drawings. (First embodiment) First, as a first embodiment of the present invention, a capped container 100A equipped with a cap unit 1A as shown in Figures 1 to 6 will be described.

[0012] Figure 1 is a perspective view showing the external appearance of a capped container 100A equipped with a cap unit 1A. Figure 2 is a vertical cross-sectional view showing the configuration of a capped container 100A equipped with a cap unit 1A. Figure 3 is a perspective view showing the inner stopper 10 removed from the outer lid 9 of the cap unit 1A. Figure 4 is a perspective view of the outer lid 9 of the cap unit 1A viewed from below. Figure 5 is a perspective view of the inner stopper 10 of the cap unit 1A viewed from below. Figure 6 is a perspective view of the inner stopper 10 of the cap unit 1A viewed from even further below.

[0013] As shown in Figures 1 and 2, the capped container 100A of this embodiment comprises a container body 2 with an open top and a cap unit 1A that can be detachably attached to the container body 2, and is a beverage container capable of keeping the beverage (contents) contained in the container body 2 warm or cold.

[0014] Specifically, the container body 2 has a metal outer container 3 and an inner container 4, for example, made of stainless steel. The container body 2 has a vacuum insulation structure in which the inner container 4, which is open at one end, is housed inside the outer container 3, which is open at one end, and the open ends of the two are joined together, with a vacuum insulation layer 5 provided between the outer container 3 and the inner container 4.

[0015] The vacuum insulation layer 5 can be formed, for example, by sealing a degassing hole provided in the center of the bottom surface of the outer container 3 with a brazing material in a chamber that has been reduced to a high vacuum (vacuumed).

[0016] The container body 2, by having such a vacuum insulation structure, can be provided with the aforementioned functions of heat retention or cold retention. Furthermore, because the container body 2 has such a vacuum insulation structure, tension is constantly applied to the outer container 3 and inner container 4 due to the difference between the internal pressure (vacuum pressure) and the external pressure (atmospheric pressure), which increases the mechanical strength of the outer container 3 and inner container 4. As a result, even if the thickness of the outer container 3 and inner container 4 is reduced, the rigidity of the container body 2 can be increased, and the weight of the container body 2 can be reduced.

[0017] The container body 2 has a roughly circular bottom portion 2b, a roughly cylindrical body portion 2c that rises from the outer circumference of the bottom portion 2b, and a roughly cylindrical neck portion 2d that rises from the upper side of the body portion 2c. The upper end of the neck portion 2d is circular and forms the upper opening 2a of the container body 2.

[0018] A female screw portion 6 is provided on the inner circumferential surface of the mouth / neck portion 2d. Furthermore, below the female screw portion 6, a ring-shaped protrusion 7 is provided, extending around the entire circumference from the inner circumferential surface of the inner container 4.

[0019] Although the capped container 100A of this embodiment has a generally cylindrical external shape, the external shape of the capped container 100A is not particularly limited and can be modified as appropriate to suit the size, design, etc. Furthermore, the outer surface of the container body 2 (outer container 3) may be painted or printed.

[0020] The cap unit 1A of this embodiment constitutes a lid that opens and closes the upper opening 2a of the container body 2. Specifically, as shown in Figures 2 to 6, the cap unit 1A includes a cap body 8 that closes the upper opening 2a of the container body 2 when fitted inside the container body 2 from the upper opening 2a of the container body 2, and the cap body 8 is attached to the container body 2 by screwing.

[0021] The cap body 8 includes an outer lid 9 that surrounds the top of the container body 2, an inner stopper 10 that is fitted into the inside of the container body 2 through the upper opening 2a, and a detachable mechanism 11A that allows the inner stopper 10 to be detachably attached to the outer lid 9.

[0022] As shown in Figures 2 and 4, the outer lid 9 is made of, for example, heat-resistant resin and has a peripheral wall portion 9a formed in a substantially cylindrical shape so that its appearance is continuous with the body portion 2c of the container body 2, an upper wall portion 9b that closes the upper outer circumference of the peripheral wall portion 9a all around, and an opening 9c that opens in a substantially circular shape in the center of the upper wall portion 9b.

[0023] As shown in Figures 2, 5, and 6, the inner plug 10 is made of, for example, a heat-resistant resin and has a substantially circular bottom wall portion 10a, a peripheral wall portion 10b that rises substantially cylindrically from around the bottom wall portion 10a, a top wall portion 10c that closes the upper part of the peripheral wall portion 10b, and a flange portion 10d in which the top wall portion 10c protrudes in the expanding diameter direction more than the peripheral wall portion 10b.

[0024] The inner plug 10 has a bottomed, substantially cylindrical lower plug member 12 that forms the bottom wall portion 10a and the peripheral wall portion 10b, and a substantially circular upper plug member 13 that forms the top wall portion 10c and the flange portion 10d, with the lower plug member 12 integrally attached to the lower surface of the upper plug member 13 by welding or the like. The interior of the inner plug 10 may be configured with an insulating material S instead of just air to form an insulating layer.

[0025] Furthermore, a male threaded portion 14 is provided on the outer circumferential surface of the peripheral wall portion 10b (internal stopper 10). In the capped container 100A, the cap body 8 (cap unit 1A) is detachably attached to the container body 2 by screwing the male threaded portion 14 and the female threaded portion 6 together. Moreover, the female threaded portion 6 and the male threaded portion 14 consist of double-start threads that are complementary to each other. When double-start threads are used, the cap body 8 (cap unit 1A) can be attached to and detached from the container body 2 with a small rotational operation (approximately 180° in this embodiment).

[0026] A water-sealing packing 15 is integrally attached to the outer circumference of the lower end of the inner stopper 10. The water-sealing packing 15 is a ring-shaped sealing member that seals the space between the protruding portion 7 of the container body 2 and the inner stopper 10, and is made of an elastic material such as heat-resistant rubber such as silicone rubber or elastomer. The water-sealing packing 15 is integrally formed with the inner stopper 10 (cap body 8) by insert molding, which will be described later.

[0027] The inner plug 10 has a first recess 10e shaped to correspond to a first protrusion 15a projecting inward from the upper end of the inner circumference of the water-sealing packing 15, and a second recess 10f shaped to correspond to a second protrusion 15b projecting upward from the lower end of the inner circumference of the water-sealing packing 15. The inner plug 10 also has a third protrusion 10g located between the first protrusion 15a and the second protrusion 15b of the water-sealing packing 15, shaped to correspond to a third recess 15c of the water-sealing packing 15 formed between the first recess 10e and the second recess 10f of the inner plug 10.

[0028] In the cap unit 1A of this embodiment, a first protrusion 15a projecting inward from the water-sealing packing 15 is integrally formed with the first recess 10e of the inner plug 10, and a second protrusion 15b projecting upward from the water-sealing packing 15 is integrally formed with the second recess 10f of the inner plug 10. Furthermore, by integrally forming the third recess 15c of the water-sealing packing 15 and the third protrusion 10g of the inner plug 10, it is possible to increase the adhesion strength of the water-sealing packing 15, which is integrally attached to the inner plug 10 (cap body 8), through their respective anchoring effects.

[0029] Furthermore, although the lower surface of the inner plug 10 has a shape in which the bottom wall portion 10a is recessed upward, it is flush with the lower surface of the water-sealing packing 15. As a result, the water-sealing packing 15 is less likely to peel off from the inner plug 10 at the boundary between the lower surface of the inner plug 10 and the lower surface of the water-sealing packing 15. In addition, because there is no gap near the boundary, water droplets are less likely to accumulate, making it hygienic.

[0030] Furthermore, two elastic flange portions 15d are provided on the outer circumferential surface of the water-sealing packing 15, protruding in the expanding radial direction. When the cap body 8 (cap unit 1A) is attached to the container body 2, the elastic flange portions 15d elastically deform, causing the water-sealing packing 15 to adhere tightly to the protruding portion 7 of the container body 2 around its entire circumference. This makes it possible to seal (stop water) the space between the protruding portion 7 (container body 2) and the inner stopper 10 (cap body 8).

[0031] Furthermore, the water-stopping packing 15 is not necessarily limited to the shape described above. For example, the number of elastic flange portions 15d is not limited to the two described above; it can be one or more.

[0032] Furthermore, the water-sealing packing 15 is not necessarily limited to the configuration in which the elastic flange portion 15d described above is provided, and its shape and other aspects can be modified as appropriate. For example, the water-sealing packing 15 may be provided with an elastic flange portion that curves downward from the upper end of its outer peripheral surface.

[0033] As shown in Figures 2 to 6, the detachable mechanism 11A includes a locking portion 16 provided on either the outer cover 9 or the inner plug 10 (in this embodiment, the outer cover 9) and a locked portion 17 provided on the other (in this embodiment, the inner plug 10).

[0034] The locking portion 16 has a plurality (two in this embodiment) of locking protrusions 16a provided around the opening 9c of the outer cover 9. The two locking protrusions 16a are provided so as to project horizontally inward from opposing positions on either side of the opening 9c of the outer cover 9.

[0035] On the other hand, the locking portion 17 has a plurality (two in this embodiment) of locking recesses 17a provided on the inner side of the lower surface of the flange portion 10d, which is the outer circumference of the plug 10. The two locking recesses 17a are provided at opposing positions on the back side of the plug 10 on the inner side of the lower surface of the flange portion 10d of the plug 10. Each locking recess 17a is located between a pair of rib walls 17b that protrude outward from the inner side of the lower surface of the flange portion 10d of the plug 10 and the flange portion 10d, and is provided by recessing a part of the upper plug member 13.

[0036] In the attachment / detachment mechanism 11A, the inner plug 10 is inserted from above into the opening 9c of the outer cover 9, and the elastic deformation (bending) of the outer cover 9 causes each locking projection 16a to move over the lower surface of the locking recess 17a. At this time, with the flange portion 10d of the inner plug 10 in contact with the periphery of the opening 9c of the outer cover 9, each locking projection 16a is locked into each locking recess 17a, thereby locking the locking portion 16 to the locked portion 17. This makes it possible to attach the inner plug 10 to the outer cover 9.

[0037] In other words, the locking of the locking portion 17 and the locking portion 16 in the detachment mechanism 11A is due to the elastic deformation (bending) of the outer cover 9, and the locking of the locking portion 17 provided on the inner plug 10 and the locking portion 16 provided on the outer cover 9 locks together, thereby integrating the outer cover 9 and the inner plug 10.

[0038] In the detachment mechanism 11A, each locking recess 17a is located between a pair of rib walls 17b, and each locking projection 16a is locked into each locking recess 17a, thereby restricting the movement of each locking projection 16a in the left-right direction (rotational direction).

[0039] As a result, when the outer lid 9 is grasped and the cap body 8 (cap unit 1A) is rotated around its central axis, each locking projection 16a contacts the pair of rib walls 17b from the inner wall side, causing the outer lid 9 and the inner stopper 10 to rotate together. Therefore, by grasping and rotating the outer lid 9, the cap body 8 can be attached to the container body 2.

[0040] Furthermore, when removing the cap body 8 (cap unit 1A) from the container body 2, the process is the same as when installing it, except that the direction of rotation is reversed. That is, by grasping the outer lid 9 of the cap body 8 and rotating it relative to the container body 2 in the opposite direction to when it was installed, the outer lid 9 and the inner stopper 10 rotate together. This makes it possible to remove the cap body 8 from the container body 2.

[0041] Furthermore, in the detachment mechanism 11A, when each locking projection 16a (locking part 16) is locked into each locking recess 17a (locked part 17), the locking projection 16a overcomes the lower surface of the locking recess 17a, thereby providing a click sensation.

[0042] Furthermore, in the detachment mechanism 11A, the cap body 8 (cap unit 1A) is attached to the container body 2 by screwing the male threaded portion 14 of the inner stopper 10 with the female threaded portion 6 of the container body 2. At this time, the flange portion 10d of the inner stopper 10 presses against the upper wall portion 9b and the locking projection 16a of the outer lid 9 from above. This suppresses vertical rattling of the outer lid 9 and makes it possible to securely close the container body 2.

[0043] On the other hand, the detachment mechanism 11A performs the opposite operation to the above-described operation, namely releasing the locking state of each locking projection 16a (locking part 16) against each locking recess 17a (locked part 17), and pulling the inner plug 10 upward from the opening 9c of the outer cover 9, thereby allowing the inner plug 10 to be removed from the outer cover 9.

[0044] In other words, the inner stopper 10 can only be removed from the outer lid 9 when the cap body 8 is detached from the container body 2. To put it another way, when the cap body 8 is attached to the container body 2, it is impossible to pull the inner stopper 10 upwards or pull the outer lid 9 downwards. Therefore, when the cap body 8 is attached to the container body 2, the inner stopper 10 cannot be accidentally removed from the outer lid 9.

[0045] As described above, in the cap unit 1A of this embodiment, the inner stopper 10 is detachably attached to the outer lid 9, allowing the outer lid 9 and the inner stopper 10 to be washed separately, and making it possible to maintain hygiene between the outer lid 9 and the inner stopper 10.

[0046] Therefore, a capped container 100A equipped with such a cap unit 1A can be further improved in terms of ease of use.

[0047] (Second embodiment) Next, as a second embodiment of the present invention, a capped container 100B equipped with a cap unit 1B, as shown in Figures 7 to 17, will be described.

[0048] Figure 7 is a perspective view showing the external appearance of the cap unit 1B. Figure 8 is a vertical cross-sectional view showing the inner plug 10 in the mounting position relative to the outer lid 9 of the cap unit 1B. Figure 9 is a bottom view showing the inner plug 10 in the mounting position relative to the outer lid 9 of the cap unit 1B. Figure 10 is a horizontal cross-sectional view showing the inner plug 10 in the mounting position relative to the outer lid 9 of the cap unit 1B, as shown by the line segment XX in Figure 8. Figure 11 is a cross-sectional perspective view showing a portion of the inner plug 10 in the mounting position relative to the outer lid 9 of the cap unit 1B. Figure 12 is a perspective view showing the state of the detachment mechanism 11B when the inner plug 10 is in the mounting position relative to the outer lid 9 of the cap unit 1B. Figure 13 is a vertical cross-sectional view showing the inner plug 10 in the detached position relative to the outer lid 9 of the cap unit 1B. Figure 14 is a bottom view showing the inner plug 10 in the detached position relative to the outer lid 9 of the cap unit 1B. Figure 15 is a horizontal cross-sectional view showing the state in which the inner plug 10 is in the detached position relative to the outer lid 9 of the cap unit 1B, as shown by the line segment XV-XV in Figure 13. Figure 16 is a cross-sectional perspective view showing a portion of the state in which the inner plug 10 is in the detached position relative to the outer lid 9 of the cap unit 1B, with a portion cut out. Figure 17 is a perspective view showing the state of the detachment mechanism 11B when the inner plug 10 is in the detached position relative to the outer lid 9 of the cap unit 1B. Furthermore, in the following description, parts equivalent to those of the cap unit 1A will not be described, and the same reference numerals will be used in the drawings.

[0049] The cap unit 1B of this embodiment is detachably attached to the container body 2 (not shown) to constitute a container with a cap 100B.

[0050] Specifically, instead of the above-mentioned detachment mechanism 11A, this cap unit 1B is equipped with a detachment mechanism 11B that allows the inner stopper 10 to be detachably attached to the outer lid 9, as shown in Figures 7 to 17.

[0051] The detachable mechanism 11B includes a locking portion 18 provided on either the outer cover 9 or the inner plug 10 (in this embodiment, the inner plug 10), and a locked portion 19 provided on the other (in this embodiment, the outer cover 9).

[0052] The locking portion 18 has a plurality (two in this embodiment) of hook portions 18a provided on the peripheral wall portion 10b of the inner plug 10. The two hook portions 18a are provided on the peripheral wall portion 10b of the inner plug 10 at opposing positions on the back side of the inner plug 10. Each hook portion 18a is configured to have a horizontal rib wall 20a projecting outward from the upper side of the peripheral wall portion 10b of the inner plug 10, a vertical rib wall 20b connecting the central portion between the flange portion 10d and the horizontal rib wall 20a, and a pair of groove portions 20c located on both sides of the vertical rib wall 20b between the flange portion 10d and the horizontal rib wall 20a.

[0053] On the other hand, the locking portion 19 has a plurality (two in this embodiment) of notched recesses 19a provided around the opening 9c of the outer cover 9. The two notched recesses 19a are located opposite each other, straddling the opening 9c of the outer cover 9. Each notched recess 19a is provided by cutting out a part of the upper wall portion 9b around the opening 9c, corresponding to the hook portion 18a.

[0054] In the detachment mechanism 11B, at the removal position shown in Figures 13 to 17, the inner plug 10 is inserted from above into the opening 9c of the outer cover 9 while aligning each notched recess 19a with each hook portion 18a. As a result, each hook portion 18a is inserted inside each notched recess 19a, and the flange portion 10d of the inner plug 10 is brought into contact with the upper wall portion 9b surrounding the opening 9c of the outer cover 9, thereby engaging the inner plug 10 with the outer cover 9.

[0055] From this state, by rotating the inner plug 10 to one side around its axis relative to the outer cover 9, each hook portion 18a engages with the surrounding area of ​​each notched recess 19a at the mounting position shown in Figures 8 to 12, thereby locking the locking portion 18 to the locked portion 19. Specifically, the upper wall portion 9b surrounding the notched recess 19a is inserted into the groove portion 20c constituting the hook portion 18a and comes into contact with the vertical rib wall 20b. As a result, the locking portion 18 engages with the locked portion 19, making it possible to attach the inner plug 10 to the outer cover 9.

[0056] The same applies when attaching the cap body 8 (cap unit 1B) to the container body 2 by screwing the male threaded portion 14 of the inner stopper 10 with the female threaded portion 6 of the container body 2. That is, when the outer lid 9 of the cap body 8 is grasped and rotated relative to the container body 2, the upper wall portion 9b comes into contact with the vertical rib wall 20b, causing the locking portion 18 to lock with the locking portion 19, and the outer lid 9 and the inner stopper 10 to rotate together. Therefore, even if the outer lid 9 is in the detached position relative to the inner stopper 10, rotating the outer lid 9 will automatically bring it to the mounting position, and the cap body 8 can then be attached to the container body 2 by a series of rotational movements.

[0057] Furthermore, the cap body 8 (cap unit 1B) is attached to the container body 2 by screwing the male threaded portion 14 of the inner stopper 10 with the female threaded portion 6 of the container body 2. At this time, the flange portion 10d of the inner stopper 10 presses against the upper wall portion 9b of the outer lid 9 from above. This suppresses vertical rattling of the outer lid 9 and makes it possible to securely close the container body 2.

[0058] Furthermore, in the detachment mechanism 11B of this embodiment, the locking portion 18 can be similarly locked to the locking portion 19 not only by rotating the inner plug 10 around the axis to one side relative to the outer cover 9, but also by rotating it around the axis to the other side.

[0059] Furthermore, when removing the cap body 8 (cap unit 1A) from the container body 2, the process is the same as when installing it, except that the direction of rotation is reversed. Specifically, by grasping the outer lid 9 of the cap body 8 and rotating it relative to the container body 2 in the opposite direction to when it was installed, the upper wall portion 9b comes into contact with the vertical rib wall 20b from the opposite side to when it was installed. At this time, the locking portion 18 is locked to the locking portion 19, and the outer lid 9 and the inner stopper 10 rotate together. This makes it possible to remove the cap body 8 from the container body 2.

[0060] In the detachment mechanism 11B, the locking portion 18 can be locked to the locking portion 19 by rotating the inner plug 10 relative to the outer cover 9 around its central axis to one or the other side, starting from the detached position. That is, when rotating the inner plug 10 relative to the outer cover 9, it can rotate in the order of mounting position, detached position, and mounting position, with the detached position being located between the mounting positions on one or the other side.

[0061] When attaching or removing the cap body 8 from the container body 2, the outer lid 9 and inner stopper 10 always become the attachment position and rotate together. Therefore, unless the user consciously selects the removal position, the position of the outer lid 9 and inner stopper 10 during normal use will be the attachment position. Consequently, the user does not need to consciously select the attachment position, and the state in which the inner stopper 10 is attached to the outer lid 9 is maintained, which is convenient.

[0062] On the other hand, in the detachment mechanism 11B, the locking state of the locking part 18 with respect to the locking part 19 is released by rotating the inner plug 10 relative to the outer cover 9 so that the detachment position is located between the mounting positions on one side or the other side, and the inner plug 10 is rotated from the mounting position to the detachment position relative to the outer cover 9.

[0063] At this time, since each notched recess 19a and each hook portion 18a align, the inner plug 10 can be pulled upward from the opening 9c of the outer cover 9. This makes it possible to remove the inner plug 10 from the outer cover 9.

[0064] In other words, the inner stopper 10 can only be removed from the outer lid 9 when the cap body 8 is detached from the container body 2. To put it another way, when the cap body 8 is attached to the container body 2, it is impossible to pull the inner stopper 10 upwards or pull the outer lid 9 downwards. Therefore, when the cap body 8 is attached to the container body 2, the inner stopper 10 cannot be accidentally removed from the outer lid 9.

[0065] Furthermore, in the detachment mechanism 11B, when inserting the inner plug 10 into the opening 9c of the outer cover 9 from above while aligning the notched recess 19a with each hook portion 18a, the upper side of the peripheral wall portion 10b of the inner plug 10 overcomes the upper wall portion 9b of the outer cover 9, thereby providing a clicking sensation.

[0066] As described above, in the cap unit 1B of this embodiment, the inner stopper 10 is detachably attached to the outer lid 9, allowing the outer lid 9 and the inner stopper 10 to be washed separately, and making it possible to maintain hygiene between the outer lid 9 and the inner stopper 10.

[0067] Therefore, a capped container 100B equipped with such a cap unit 1B can be further improved in terms of ease of use.

[0068] (Third embodiment) Next, as a third embodiment of the present invention, a capped container 100C equipped with a cap unit 1C, as shown in Figures 18 to 22, will be described.

[0069] Figure 18 is a perspective view showing the external appearance of the cap unit 1C. Figure 19 is a vertical cross-sectional view showing the structure of the cap unit 1C. Figure 20 is a perspective view of the cap unit 1C from below. Figure 21 is a perspective view showing the cap unit 1C with the inner stopper 10 removed from the outer cover 9. Figure 22 is a perspective view showing the structure of the outer cover 9 of the cap unit 1C. Furthermore, in the following description, parts equivalent to those of the cap unit 1A will not be described, and the same reference numerals will be used in the drawings.

[0070] The cap unit 1C of this embodiment is detachably attached to the container body 2 (not shown) to constitute a container with a cap 100C.

[0071] Specifically, instead of the above-mentioned detachment mechanism 11A, this cap unit 1C is equipped with a detachment mechanism 11C that allows the inner stopper 10 to be detachably attached to the outer lid 9, as shown in Figures 18 to 22.

[0072] The detachable mechanism 11C includes a locking portion 21 provided on either the outer cover 9 or the inner plug 10 (in this embodiment, the inner plug 10), and a locked portion 22 provided on the other (in this embodiment, the outer cover 9).

[0073] The locking portion 21 has a plurality (two in this embodiment) of plungers 21a provided on the underside of the flange portion 10d of the inner plug 10. The two plungers 21a are provided on the underside of the flange portion 10d of the inner plug 10 at opposing positions on the back side of the inner plug 10. Each plunger 21a has a structure that allows it to push the ball (or pin) provided at its outer tip inward against the biasing force of the spring, while biasing the ball (or pin) provided on its inside with a spring. Each plunger 21a is mounted with the ball (or pin) protruding outward from the underside of the flange portion 10d of the inner plug 10.

[0074] On the other hand, the locking portion 22 is composed of an upper wall portion 9b provided around the opening 9c of the outer cover 9.

[0075] Furthermore, the detachment mechanism 11C includes a positioning engagement portion 25 that prevents the inner plug 10 from rotating relative to the outer cover 9 through the engagement of a first engagement portion 23 provided on the inner plug 10 and a second engagement portion 24 provided on the outer cover 9.

[0076] The first engaging portion 23 is composed of a pair of rib walls that protrude outward from the peripheral wall portion 10b of the inner plug 10, at a position opposite to the flange portion 10d of the inner plug 10 and perpendicular to the plunger 21a in a plan view.

[0077] On the other hand, the second engaging portion 24 is composed of a pair of grooves that cut radially into the upper wall portion 9b provided around the opening 9c of the outer cover 9, at positions opposite each other across the opening 9c of the outer cover 9.

[0078] In the detachment mechanism 11C, the inner plug 10 is inserted from above into the opening 9c of the outer cover 9 while aligning the first engaging portion 23 and the second engaging portion 24. As a result, the first engaging portion 23 and the second engaging portion 24 are engaged, and the flange portion 10d of the inner plug 10 is brought into contact with the upper wall portion 9b surrounding the opening 9c of the outer cover 9, thereby engaging the inner plug 10 with the outer cover 9.

[0079] At this time, each plunger 21a is locked to the upper wall portion 9b provided around the opening 9c of the outer cover 9, thereby locking the locking portion 21 to the locking portion 22. This makes it possible to attach the inner plug 10 to the outer cover 9.

[0080] Furthermore, the detachment mechanism 11C makes it possible to provide a click sensation when each plunger 21a overcomes the upper wall portion 9b.

[0081] Furthermore, in the detachment mechanism 11C, the cap body 8 (cap unit 1C) is attached to the container body 2 by screwing the male threaded portion 14 of the inner stopper 10 with the female threaded portion 6 of the container body 2. At this time, the flange portion 10d of the inner stopper 10 presses against the upper wall portion 9b of the outer lid 9 from above. This suppresses vertical rattling of the outer lid 9 and makes it possible to securely close the container body 2.

[0082] Furthermore, the engagement of the first engaging portion 23 and the second engaging portion 24 of the positioning engaging portion 25 causes the outer lid 9 and the inner stopper 10 to rotate together. Therefore, by gripping and rotating the outer lid 9, the cap body 8 can be attached to the container body 2.

[0083] Furthermore, when removing the cap body 8 (cap unit 1C) from the container body 2, the process is the same as when attaching it, except that the direction of rotation is reversed. That is, by grasping the outer lid 9 of the cap body 8 and rotating it relative to the container body 2 in the opposite direction to when it was attached, the outer lid 9 and the inner stopper 10 rotate together. This makes it possible to remove the cap body 8 from the container body 2.

[0084] On the other hand, the detachment mechanism 11C performs the opposite operation to the above-described operation, namely releasing the locking state of each plunger 21a (locking part 21) with respect to the locking part 22, and pulling the inner plug 10 upward through the opening 9c of the outer cover 9, thereby removing the inner plug 10 from the outer cover 9.

[0085] In other words, the inner stopper 10 can only be removed from the outer lid 9 when the cap body 8 is detached from the container body 2. To put it another way, when the cap body 8 is attached to the container body 2, it is impossible to pull the inner stopper 10 upwards or pull the outer lid 9 downwards. Therefore, when the cap body 8 is attached to the container body 2, the inner stopper 10 cannot be accidentally removed from the outer lid 9.

[0086] As described above, in the cap unit 1C of this embodiment, the inner stopper 10 is detachably attached to the outer lid 9, allowing the outer lid 9 and the inner stopper 10 to be washed separately, and making it possible to maintain hygiene between the outer lid 9 and the inner stopper 10.

[0087] Therefore, a capped container 100C equipped with such a cap unit 1C can be further improved in terms of ease of use.

[0088] (Fourth embodiment) Next, as a fourth embodiment of the present invention, a capped container 100D equipped with a cap unit 1D, as shown in Figures 23 to 25, will be described.

[0089] Figure 23 is a perspective view showing the external appearance of the cap unit 1D. Figure 24 is a vertical cross-sectional view showing the configuration of the cap unit 1D. Figure 25 is a perspective view showing the cap unit 1D with the inner plug 10 removed from the outer cover 9. In the following description, parts equivalent to those of the cap unit 1A will not be described, and the same reference numerals will be used in the drawings.

[0090] The cap unit 1D of this embodiment is detachably attached to the container body 2 (not shown) to constitute a container with a cap 100D.

[0091] Specifically, instead of the above-mentioned detachment mechanism 11A, this cap unit 1D is equipped with a detachment mechanism 11D that allows the inner stopper 10 to be detachably attached to the outer lid 9, as shown in Figures 23 to 25.

[0092] The detachable mechanism 11D includes a locking portion 26 provided on either the outer cover 9 or the inner plug 10 (in this embodiment, the outer cover 9) and a locked portion 27 provided on the other (in this embodiment, the inner plug 10).

[0093] The locking portion 26 has a locking projection 26a that extends around the entire circumference of the opening 9c of the outer cover 9, except for the first engaging portion 28 which will be described later. The locking projection 26a is provided so as to protrude horizontally inward from the upper wall portion 9b which is provided around the opening 9c of the outer cover 9.

[0094] On the other hand, the locking portion 27 has a locking recess 27a provided around its entire circumference on the inner side of the lower surface of the flange portion 10d, which is the outer circumference of the inner plug 10. The locking recess 27a is provided by recessing the inner side of the lower surface of the flange portion 10d around its entire circumference, corresponding to the locking projection 26a.

[0095] Furthermore, the detachment mechanism 11D includes a positioning engagement portion 30 that prevents the inner plug 10 from rotating relative to the outer cover 9 through the engagement of a first engagement portion 28 provided on the outer cover 9 and a second engagement portion 29 provided on the inner plug 10.

[0096] The first engaging portion 28 has a plurality (two in this embodiment) of locking projections 28a provided around the opening 9c of the outer cover 9. The two locking projections 28a are positioned opposite each other across the opening 9c of the outer cover 9, and protrude inward from between a pair of grooves 28b that are radially cut out of the upper wall portion 9b provided around the opening 9c.

[0097] On the other hand, the second engaging portion 29 has a plurality (two in this embodiment) of locking recesses 29a provided on the lower side of the flange portion 10d of the inner plug 10. The two locking recesses 29a are provided at opposing positions on the back side of the inner plug 10 on the lower side of the flange portion 10d of the inner plug 10. Each locking recess 29a is provided by cutting out a part of the lower peripheral edge side of the flange portion 10d in correspondence with the locking projection 28a.

[0098] In the attachment / detachment mechanism 11D, the inner plug 10 is inserted from above into the opening 9c of the outer cover 9 while aligning the first engaging portion 28 and the second engaging portion 29. As a result, the first engaging portion 28 and the second engaging portion 29 engage, and the locking projection 26a is locked into the locking recess 27a by the elastic deformation (bending) of the outer cover 9, so that the flange portion 10d of the inner plug 10 comes into contact with the periphery of the opening 9c of the outer cover 9, and the locking portion 26 is locked into the locking portion 27. This makes it possible to attach the inner plug 10 to the outer cover 9.

[0099] In other words, the locking of the locking portion 27 and the locking portion 26 in the detachment mechanism 11D is due to the elastic deformation (bending) of the outer cover 9, and the outer cover 9 and the inner cover 10 are integrated by the relatively weak locking of the locking portion 27 provided on the inner plug 10 and the locking portion 26 provided on the outer cover 9.

[0100] Furthermore, the detachment mechanism 11D makes it possible to provide a click sensation when each locking projection 26a (locking part 26) is locked into each locking recess 27a (locked part 27).

[0101] Furthermore, the cap body 8 (cap unit 1D) is attached to the container body 2 by screwing the male threaded portion 14 of the inner stopper 10 with the female threaded portion 6 of the container body 2. At this time, the flange portion 10d of the inner stopper 10 presses against the upper wall portion 9b of the outer lid 9 from above. This suppresses vertical rattling of the outer lid 9 and makes it possible to securely close the container body 2.

[0102] Furthermore, the engagement of the first engaging portion 28 and the second engaging portion 29 of the positioning engaging portion 30 causes the outer lid 9 and the inner stopper 10 to rotate together. Therefore, by gripping and rotating the outer lid 9, the cap body 8 can be attached to the container body 2.

[0103] Furthermore, when removing the cap body 8 (cap unit 1D) from the container body 2, the process is the same as when attaching it, except that the direction of rotation is reversed. That is, by grasping the outer lid 9 of the cap body 8 and rotating it relative to the container body 2 in the opposite direction to when it was attached, the outer lid 9 and the inner stopper 10 rotate together. This makes it possible to remove the cap body 8 from the container body 2.

[0104] On the other hand, the detachment mechanism 11D performs the opposite operation to the above-described operation, namely releasing the locking state of each locking projection 26a (locking part 26) with respect to each locking recess 27a (locked part 27), and pulling the inner plug 10 upward through the opening 9c of the outer cover 9, thereby allowing the inner plug 10 to be removed from the outer cover 9.

[0105] As described above, in the cap unit 1D of this embodiment, the inner stopper 10 is detachably attached to the outer lid 9, allowing the outer lid 9 and the inner stopper 10 to be washed separately, and making it possible to maintain hygiene between the outer lid 9 and the inner stopper 10.

[0106] Therefore, a capped container 100D equipped with such a cap unit 1D can be made even easier to use.

[0107] (Fifth embodiment) Next, as a fifth embodiment of the present invention, a capped container 100E equipped with a cap unit 1E, as shown in Figures 26 to 28, will be described.

[0108] Figure 26 is a perspective view showing the inner stopper 10 removed from the outer lid 9 of the cap unit 1E. Figure 27 is a perspective view showing the configuration of the outer lid 9 of the cap unit 1E. Figure 28 is a perspective view showing the configuration of the inner stopper 10 of the cap unit 1E. Furthermore, in the following description, parts equivalent to those of the cap units 1A, 1B, and 1C will not be described, and the same reference numerals will be used in the drawings.

[0109] The cap unit 1E of this embodiment is detachably attached to the container body 2 (not shown) to constitute a container with a cap 100E.

[0110] Specifically, instead of the above-mentioned detachable mechanism 11A, this cap unit 1E is equipped with a detachable mechanism 11E for detachably attaching the inner stopper 10 to the outer cover 9, as shown in Figures 26 to 28.

[0111] The detachable mechanism 11E combines the configurations of the detachable mechanisms 11B and 11C, and comprises a plurality of hook portions 18a (two in this embodiment) that serve as locking portions 18 provided on either the outer cover 9 or the inner plug 10 (in this embodiment, the inner plug 10), a plurality of notched recesses 19a (two in this embodiment) that serve as locked portions 19 provided on the other (outer cover 9 in this embodiment), a plurality of plungers 21a (two in this embodiment) that serve as locking portions 21 provided on either the outer cover 9 or the inner plug 10 (in this embodiment, the inner plug 10), and a plurality of locking recesses 22a (two in this embodiment) that serve as locked portions 22 provided on the other (outer cover 9 in this embodiment).

[0112] Of these, the two hook portions 18a and the two plungers 21a are located opposite each other on the peripheral wall portion 10b of the inner plug 10 and are positioned perpendicular to each other in a plan view. On the other hand, the two notched recesses 19a and the two locking recesses 22a are located opposite each other across the opening 9c of the outer cover 9 and are positioned perpendicular to each other in a plan view.

[0113] Each locking recess 22a is located between a pair of locking protrusions 22b that project downward from the inner circumferential lower surface of the upper wall portion 9b, which is provided around the opening 9c of the outer cover 9.

[0114] In the detachment mechanism 11E, the inner plug 10 is inserted from above into the opening 9c of the outer cover 9 while aligning each notched recess 19a with each hook portion 18a. As a result, each hook portion 18a is inserted inside each notched recess 19a, each plunger 21a is inserted inside each locking recess 22a, and the flange portion 10d of the inner plug 10 is brought into contact with the upper wall portion 9b around the opening 9c of the outer cover 9, thereby engaging the inner plug 10 with the outer cover 9.

[0115] Here, as each plunger 21a is inserted into the locking recess 22a, each plunger 21a overcomes the inner circumferential end of the upper wall portion 9b of the outer cover 9, thereby engaging the inner plug 10 with the outer cover 9 in the vertical direction. In other words, when pulling the inner plug 10 upward from the outer cover 9, each plunger 21a must overcome the inner circumferential end of the upper wall portion 9b of the outer cover 9 again. Therefore, the locking portion 21 and the locked portion 22 also function as a temporary fastening mechanism in the vertical direction.

[0116] Furthermore, when each plunger 21a is inserted into the inside of the locking recess 22a, the plunger 21a overcomes the inner circumferential end of the upper wall portion 9b of the outer cover 9, thereby providing a clicking sensation.

[0117] From this state, by rotating the inner plug 10 to one side around its axis relative to the outer cover 9, each hook portion 18a engages with the surrounding area of ​​each notched recess 19a at the mounting position shown in Figures 9 to 12. At this time, each plunger 21a overcomes the locking projection 22b and engages with the upper wall portion 9b provided around the opening 9c of the outer cover 9. This makes it possible to attach the inner plug 10 to the outer cover 9.

[0118] The same applies when attaching the cap body 8 (cap unit 1E) to the container body 2 by screwing the male threaded portion 14 of the inner stopper 10 with the female threaded portion 6 of the container body 2. That is, when the outer lid 9 of the cap body 8 is grasped and rotated relative to the container body 2, the upper wall portion 9b comes into contact with the vertical rib wall 20b, causing the locking portion 18 to lock with the locking portion 19, and the outer lid 9 and the inner stopper 10 to rotate together. Therefore, even if the outer lid 9 is in the detached position relative to the inner stopper 10, rotating the outer lid 9 will automatically bring it to the mounting position, and the cap body 8 can then be attached to the container body 2 by a series of rotational movements.

[0119] Furthermore, the cap body 8 (cap unit 1E) is attached to the container body 2 by screwing the male threaded portion 14 of the inner stopper 10 with the female threaded portion 6 of the container body 2. At this time, the flange portion 10d of the inner stopper 10 presses against the upper wall portion 9b of the outer lid 9 from above. This suppresses vertical rattling of the outer lid 9 and makes it possible to securely close the container body 2.

[0120] Furthermore, in the detachment mechanism 11E of this embodiment, the locking portion 18 can be similarly locked to the locking portion 19 not only by rotating the inner plug 10 around the axis to one side relative to the outer cover 9, but also by rotating it around the axis to the other side.

[0121] Furthermore, when removing the cap body 8 (cap unit 1E) from the container body 2, the process is the same as when installing it, except that the direction of rotation is reversed. That is, by grasping the outer lid 9 of the cap body 8 and rotating it relative to the container body 2 in the opposite direction to when it was installed, the upper wall portion 9b comes into contact with the vertical rib wall 20b from the opposite side to when it was installed. At this time, the locking portion 18 is locked to the locking portion 19, and the outer lid 9 and the inner stopper 10 rotate together. This makes it possible to remove the cap body 8 from the container body 2.

[0122] In the detachment mechanism 11E, the locking portion 18 can be locked to the locking portion 19 by rotating the inner plug 10 relative to the outer cover 9 around its central axis to one or the other side, starting from the detached position. That is, when rotating the inner plug 10 relative to the outer cover 9, it can rotate in the order of mounting position, detached position, and mounting position, with the detached position being located between the mounting positions on one or the other side.

[0123] When attaching or removing the cap body 8 from the container body 2, the outer lid 9 and inner stopper 10 always become the attachment position and rotate together. Therefore, unless the user consciously selects the removal position, the position of the outer lid 9 and inner stopper 10 during normal use will be the attachment position. Consequently, the user does not need to consciously select the attachment position, and the state in which the inner stopper 10 is attached to the outer lid 9 is maintained, which is convenient.

[0124] Furthermore, the detachment mechanism 11E makes it possible to provide a clicking sensation when each plunger 21a rotates between the mounting position and the detachment position by overcoming the locking projection 22b.

[0125] On the other hand, in the detachment mechanism 11E, the locking state of the locking part 18 with respect to the locking part 19 is released by rotating the inner plug 10 relative to the outer cover 9 so that the detachment position is located between the mounting positions on one side or the other side, and the inner plug 10 is rotated from the mounting position to the detachment position relative to the outer cover 9.

[0126] At this time, each notched recess 19a and each hook portion 18a align, allowing the inner plug 10 to be pulled upward from the opening 9c of the outer cover 9. This makes it possible to remove the inner plug 10 from the outer cover 9.

[0127] In other words, the inner stopper 10 can only be removed from the outer lid 9 when the cap body 8 is detached from the container body 2. To put it another way, when the cap body 8 is attached to the container body 2, it is impossible to pull the inner stopper 10 upwards or pull the outer lid 9 downwards. Therefore, when the cap body 8 is attached to the container body 2, the inner stopper 10 cannot be accidentally removed from the outer lid 9.

[0128] Furthermore, the alignment of each locking recess 22a and each plunger 21a is merely a means of clearly communicating to the user that each notched recess 19a and each hook portion 18a are aligned (in the removal position). In other words, if the locked portion 19 and the locking portion 18 are not present, each plunger 21a itself can move upward from any position over the inner circumferential end of the upper wall portion 9b of the outer cover 9.

[0129] As described above, in the cap unit 1E of this embodiment, the inner stopper 10 is detachably attached to the outer lid 9, allowing the outer lid 9 and the inner stopper 10 to be washed separately, and making it possible to maintain hygiene between the outer lid 9 and the inner stopper 10.

[0130] Therefore, a capped container 100E equipped with such a cap unit 1E can be further improved in terms of ease of use.

[0131] It should be noted that the present invention is not necessarily limited to the embodiments described above, and various modifications can be made without departing from the spirit of the invention. For example, the cap units 1A to 1E are configured such that the inner stopper 10 is attached to the container body 2 by screwing it in while it is fitted inside the upper opening 2a of the container body 2 as described above, but the configuration is not necessarily limited to this. For example, the cap units 1A to 1E can also be configured such that the outer lid 9 is attached to the container body 2 by screwing it in while it covers the upper opening 2a of the container body 2 from the outside.

[0132] In this configuration, instead of the female thread portion 6 and male thread portion 14 described above, the outer lid 9 (cap body 8) can be detachably attached to the container body 2 by screwing together the male thread portion provided on the outer circumferential surface of the neck portion 2d with the female thread portion provided on the inner circumferential surface of the peripheral wall portion 9a that constitutes the outer lid 9.

[0133] Furthermore, while the above-mentioned capped containers 100A to 100E are configured to directly open and close the upper opening 2a of the container body 2, the configuration is not necessarily limited to this. For example, it is also possible to configure the cap units 1A to 1E to be detachably attached to a shoulder member attached to the container body 2.

[0134] Furthermore, it is also possible to configure the container in such a way that the lid can be opened and closed on the cap body attached to the container body 2. In this configuration, the lid may be attached to the cap body by screwing it in, or it may be attached to the cap body via a hinge so that it can rotate.

[0135] In the above embodiment, the present invention is illustrated as being applied to a beverage container that has a heat retention function (or cold retention function) due to the container body 2 having the vacuum insulation structure described above. However, the present invention can be broadly applied to a lidded container that comprises a container body and a lid that can be detachably attached to the container body. [Explanation of Symbols]

[0136] 1A~1E…Cap unit 2…Container body 3…Outer container 4…Inner container 5…Vacuum insulation layer 6…Female threaded part 7…Protruding part 8…Cap body 9…Outer lid 10…Inner stopper 11A~11E…Detachable mechanism 12…Lower stopper member 13…Upper stopper member 14…Male threaded part 15…Waterproof packing 16…Locking part 16a…Locking projection 17…Locking part 17a…Locking recess 18…Locking part 18a…Hook part 19…Locking part 19a…Notched recess 21…Locking part 21a…Plunger 22…Locking part 22a…Locking recess 22b…Locking projection 23…First engaging part 24…Second engaging part 25…Positioning engaging part 26…Locking part 26a…Locking projection 27...Locking part 27a...Locking recess 28...First engaging part 29...Second engaging part 30...Positioning engaging part 100A~100E...Container with cap

Claims

1. A cap unit that can be detachably attached to a container body with an open top, The outer lid surrounds the top of the container body, An inner stopper is fitted into the inside of the container body through the upper opening of the container body, The outer lid is equipped with a detachable mechanism for detachably attaching the inner stopper to the outer lid, The aforementioned detachment mechanism has a locking portion provided on either the outer cover or the inner stopper, and a locked portion provided on the other, The inner plug is inserted from above into an opening provided in the upper part of the outer lid, and the flange portion protruding in the expanding direction from the outer circumference of the upper end of the inner plug abuts against the periphery of the opening of the outer lid, thereby the inner plug is attached to the outer lid by the locking portion being locked into the locking portion. The outer cover, when in use after the inner stopper is installed, has its entire outer surface exposed to the outside, and is a component integrally formed including the locking portion or the locked portion. The outer lid and the inner stopper have the detachable mechanism, The locking portion includes a plurality of locking protrusions provided around the opening of the outer cover, The locking portion includes a plurality of locking recesses provided on the outer circumference of the inner stopper, As the entire outer cover flexes due to elastic deformation, the locking projection overcomes the locking recess, A cap unit characterized in that the inner stopper is attached to the outer lid by the locking projection being locked into the locking recess.

2. A cap unit that can be detachably attached to a container body with an open top, The outer lid surrounds the top of the container body, An inner stopper is fitted into the inside of the container body through the upper opening of the container body, The outer lid is equipped with a detachable mechanism for detachably attaching the inner stopper to the outer lid, The aforementioned detachment mechanism has a locking portion provided on either the outer cover or the inner stopper, and a locked portion provided on the other, The inner plug is inserted from above into an opening provided in the upper part of the outer lid, and the flange portion protruding in the expanding direction from the outer circumference of the upper end of the inner plug abuts against the periphery of the opening of the outer lid, thereby the inner plug is attached to the outer lid by the locking portion being locked into the locking portion. The outer cover is a component integrally formed including the locking portion or the locked portion, The outer lid and the inner stopper have the detachable mechanism, The locking portion includes a locking projection provided around the entire circumference of the opening of the outer cover, The locking portion includes a locking recess provided around the entire circumference of the flange portion. As the entire outer cover flexes due to elastic deformation, the locking projection engages with the locking recess around its entire circumference. The locking projection is engaged with the locking recess, thereby attaching the inner plug to the outer lid. The detachment mechanism further includes a positioning engagement portion comprising a first engagement portion provided on either the outer cover or the inner plug, and a second engagement portion provided on the other of the two. The engagement of the first engaging portion and the second engaging portion prevents the inner plug from rotating relative to the outer lid. A cap unit characterized in that the outer lid and the inner stopper rotate together when the cap is attached to the container body by screwing.

3. A cap unit that can be detachably attached to a container body with an open top, The outer lid surrounds the top of the container body, An inner stopper is fitted into the inside of the container body through the upper opening of the container body, The outer lid is equipped with a detachable mechanism for detachably attaching the inner stopper to the outer lid, The aforementioned detachment mechanism has a locking portion provided on either the outer cover or the inner stopper, and a locked portion provided on the other, The inner plug is inserted from above into an opening provided in the upper part of the outer lid, and the flange portion protruding in the expanding direction from the outer circumference of the upper end of the inner plug abuts against the periphery of the opening of the outer lid, thereby the inner plug is attached to the outer lid by the locking portion being locked into the locking portion. The outer cover is a component integrally formed including the locking portion or the locked portion, The outer lid and the inner stopper have the detachable mechanism, The locking portion includes a plurality of hook portions provided on the outer circumference of the inner stopper, The locking portion includes a plurality of notched recesses provided around the opening of the outer cover, A cap unit characterized in that the hook portion is inserted into the inside of the notched recess, and when the inner stopper is rotated about an axis relative to the outer lid, the hook portion engages with the surrounding area of ​​the notched recess, thereby attaching the inner stopper to the outer lid.

4. The locking portion includes a plurality of plungers provided on the outer circumference of the inner plug. The locking portion includes a plurality of locking recesses and locking protrusions provided around the opening of the outer cover, The cap unit according to claim 3, characterized in that, at the position where the hook portion is inserted inside the notched recess, the plunger is locked in the locking recess, and by rotating the inner stopper around its axis relative to the outer lid from this state, the plunger overcomes the locking projection, providing a clicking sensation, and then the locking state of the plunger with respect to the locking recess is released.

5. A cap unit that can be detachably attached to a container body with an open top, The outer lid surrounds the top of the container body, An inner stopper is fitted into the inside of the container body through the upper opening of the container body, The outer lid is equipped with a detachable mechanism for detachably attaching the inner stopper to the outer lid, The aforementioned detachment mechanism has a locking portion provided on either the outer cover or the inner stopper, and a locked portion provided on the other, The inner plug is inserted from above into an opening provided in the upper part of the outer lid, and the flange portion protruding in the expanding direction from the outer circumference of the upper end of the inner plug abuts against the periphery of the opening of the outer lid, thereby the inner plug is attached to the outer lid by the locking portion being locked into the locking portion. The outer cover is a component integrally formed including the locking portion or the locked portion, The outer lid and the inner stopper have the detachable mechanism, The locking portion includes a plurality of plungers provided on the outer circumference of the inner plug. A cap unit characterized in that the inner stopper is attached to the outer lid by the plunger being locked to the locking portion.

6. The cap unit according to any one of claims 1 to 5, characterized in that the inner stopper or the outer lid is attached to the container body by screwing.

7. The cap unit according to any one of claims 1 to 6, characterized in that it is integrally attached to the outer circumference of the lower end of the inner stopper and comprises a water-sealing packing that seals the space between the container body and the inner stopper.

8. A cap unit according to any one of claims 1 to 7, A container with a cap, comprising a container body to which the cap unit is attached.

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