JP7797276B2 - Cap unit and container with cap - Google Patents

Description

The present invention relates to a cap unit and a capped container.

Conventionally, there have been capped containers equipped with a cap unit (stopper) that is removably attached to the neck of a container body that has an open top, thereby closing the top opening of the container body (see, for example, Patent Documents 1 and 2 listed below).

Such a cap unit has an outer lid that covers the neck of the container body and an inner stopper that fits inside the container body from the top opening, and is structured so that the outer lid or inner stopper is attached to the cap body by screwing.

Japanese Patent Application Laid-Open No. 2019-001538 Japanese Patent Application Laid-Open No. 2019-001539

However, in the above-mentioned capped containers, when cleaning the cap unit, it is very difficult to clean the area between the outer lid and the inner stopper. For this reason, cap units are often designed to be separable into the outer lid and the inner stopper to improve cleanability.

However, with conventional cap units, when the outer lid and inner stopper are designed to be separable, the structure for attaching the inner stopper to the outer lid (detachment mechanism) becomes complicated.

The present invention was proposed in light of these conventional circumstances, and aims to provide a cap unit that simplifies the structure for attaching the inner stopper to the outer lid, making it easier to clean the outer lid and inner stopper, as well as a capped container that, by being equipped with such a cap unit, allows for even greater usability.

In order to achieve the above object, the present invention provides the following means.
[1] A cap unit that can be detachably attached to a container body having an open top,
an outer lid surrounding the top of the container body;
an inside plug fitted into the container body from an upper opening of the container body;
a detachment mechanism for detachably attaching the inner plug to the outer lid,
The cap unit is characterized in that the detachment mechanism has a structure in which the inner plug is attached to the outer lid by rotating the inner plug around its axis from a removal position in which the central axis of the outer lid is eccentric with respect to the central axis of the inner plug to an attachment position in which the central axes of the outer lid and the inner plug are aligned.
[2] A cap unit that can be detachably attached to a container body having an open top,
an outer lid surrounding the top of the container body;
an inside plug fitted into the container body from an upper opening of the container body;
a detachment mechanism for detachably attaching the inner plug to the outer lid,
The cap unit is characterized in that the detachment mechanism has a structure in which the inner plug is attached to the outer lid by rotating the inner plug around its axis from a removal position where the central axis of the outer lid is eccentric with respect to the central axis of the inner plug, and then sliding the inner plug to an attachment position.
[3] The cap unit described in [1] or [2], characterized in that in the removal position, the inner plug is inserted from above into the opening provided at the top of the outer lid, and the flange portion protruding in the radially expanding direction from the outer periphery of the upper end side of the inner plug is abutted against the periphery of the opening of the outer lid, thereby engaging the inner plug with the outer lid.
[4] The detachment mechanism includes a guide engagement portion that guides the inside plug rotatably relative to the outer lid between the removal position and the attachment position by engaging a first engagement portion provided on the outer lid with a second engagement portion provided on the inside plug;
The cap unit described in [3] is characterized in that it is provided with a rotational locking portion in which, when the inner plug is rotated to the installation position, either a first locking portion provided on the outer lid or a second locking portion provided on the inner plug is locked with the other locking portion.
[5] The detachment mechanism includes a guide engagement portion that guides the inside plug rotatably relative to the outer lid between the removal position and the attachment position by engaging a first engagement portion provided on the outer lid with a second engagement portion provided on the inside plug;
The cap unit described in [3] is characterized in that it is provided with a slide locking portion in which, when the inner plug is slid to the mounting position, either a first locking portion provided on the outer lid or a second locking portion provided on the inner plug is locked to the other locking portion.
[6] The cap unit according to [4] or [5], characterized in that a clicking sensation is given when the one locking portion is locked with the other locking portion.
[7] The cap unit according to any one of [1] to [6], wherein the inner plug or the outer lid is attached to the container body by screwing.
[8] A cap unit described in any one of [1] to [7], characterized in that it is provided with a waterproof gasket that is integrally attached to the outer periphery of the lower end side of the inner plug and seals the gap between the container body and the inner plug.
[9] The cap unit according to any one of [1] to [8] above;
A capped container comprising: a container body to which the cap unit is attached.

As described above, the present invention makes it possible to provide a cap unit that simplifies the structure for attaching the inner stopper to the outer lid and improves the cleanability of the outer lid and inner stopper, as well as a capped container that, by being equipped with such a cap unit, allows for even greater usability.

1 is a perspective view showing the appearance of a capped container equipped with a cap unit according to a first embodiment of the present invention. 2 is a cross-sectional view showing the configuration of a capped container equipped with the cap unit shown in FIG. 1. FIG. 3 is a perspective view showing a state in which an inner plug is in an attachment position relative to an outer lid of the cap unit shown in FIG. 2. FIG. 3 is a partially cutaway perspective view showing a state in which an inside plug is in an attachment position relative to an outer lid of the cap unit shown in FIG. 2. [0023]FIG. 3 is a bottom view showing a state in which the inside plug is in an attachment position relative to the outer lid of the cap unit shown in FIG. 2. FIG. 2 is a cross-sectional view showing a state in which the inside plug is in a detached position relative to the outer lid of the cap unit shown in FIG. 1 . 7 is a perspective view showing a state in which the inside plug is in a detached position relative to the outer lid of the cap unit shown in FIG. 6. FIG. 7 is a partially cutaway perspective view showing a state in which the inside plug is in a detached position relative to the outer lid of the cap unit shown in FIG. 6. FIG. 7 is a bottom view showing the state in which the inside plug is in a detached position relative to the outer lid of the cap unit shown in FIG. 6. FIG. 1. FIG. 4 is a bottom view showing a state in which the inside plug is between a detached position and an attached position relative to the outer lid of the cap unit shown in FIG. 2 is a perspective view of an outer lid provided in the cap unit shown in FIG. 1, seen from above. FIG. 2 is a bottom view of an outer cover provided in the cap unit shown in FIG. 1. 2 is a perspective view of one side of an inside plug provided in the cap unit shown in FIG. 1, viewed from above. FIG. 2 is a perspective view of one side of an inside plug provided in the cap unit shown in FIG. 1, viewed from below. FIG. 2 is a perspective view of the other side of the inside plug provided in the cap unit shown in FIG. 1, viewed from above. FIG. 2 is a perspective view of the other side of the inside plug provided in the cap unit shown in FIG. 1, viewed from below. FIG. 2 is a top view of an inside plug provided in the cap unit shown in FIG. 1. 2 is a bottom view of an inside plug provided in the cap unit shown in FIG. 1. FIG. 10 is a perspective view showing the appearance of a capped container equipped with a cap unit according to a second embodiment of the present invention. FIG. 20 is a perspective view showing a state in which the inner plug is in an attachment position relative to the outer lid of the cap unit shown in FIG. 19. 20 is a partially cutaway perspective view showing a state in which the inside plug is in an attached position relative to the outer lid of the cap unit shown in FIG. 19. FIG. 20 is a bottom view showing the state in which the inside plug is in the attachment position relative to the outer lid of the cap unit shown in FIG. 19. 20 is a horizontal cross-sectional view showing a state in which the inside plug is in an attachment position relative to the outer lid of the cap unit shown in FIG. 19. 20 is a perspective view of the main part, seen from below, of the guide engagement portion when the inside plug is in the attachment position relative to the outer lid of the cap unit shown in FIG. 19 . 20 is a perspective view of the main part, seen from below, of the slide locking portion when the inside plug is in the attachment position relative to the outer lid of the cap unit shown in FIG. 19. FIG. 20 is a perspective view showing a state in which the inside plug is in a detached position relative to the outer lid of the cap unit shown in FIG. 19. 20 is a partially cutaway perspective view showing the state in which the inside plug is in a detached position relative to the outer lid of the cap unit shown in FIG. 19. FIG. 20 is a bottom view showing the state in which the inside plug is in a detached position relative to the outer lid of the cap unit shown in FIG. 19. 20 is a horizontal cross-sectional view showing the state in which the inside plug is in a detached position relative to the outer lid of the cap unit shown in FIG. 19. 20 is a perspective view of the main part, seen from below, of the guide engagement portion when the inner plug is in a removal position relative to the outer lid of the cap unit shown in FIG. 19. FIG. 20 is a perspective view of the main part of the slide locking portion when viewed from below, with the inside plug in a removed position relative to the outer lid of the cap unit shown in FIG. 19. FIG. 20 is a perspective view showing a state in which the inside plug is in an intermediate position relative to the outer lid of the cap unit shown in FIG. 19. 20 is a partially cutaway perspective view showing a state in which the inside plug is in an intermediate position relative to the outer lid of the cap unit shown in FIG. 19. FIG. 20 is a bottom view showing a state in which the inside plug is in an intermediate position relative to the outer lid of the cap unit shown in FIG. 19. 20 is a horizontal cross-sectional view showing a state in which the inside plug is in an intermediate position relative to the outer lid of the cap unit shown in FIG. 19. 20 is a perspective view of the main part, seen from below, of the guide engagement portion when the inner plug is in an intermediate position relative to the outer lid of the cap unit shown in FIG. 19 . 20 is a perspective view of the main part of the slide locking portion when viewed from below, with the inside plug in an intermediate position relative to the outer lid of the cap unit shown in FIG. 19. FIG. 20 is a perspective view of an outer lid provided in the cap unit shown in FIG. 19, seen from above. FIG. 20 is a perspective view of one side of an outer lid provided in the cap unit shown in FIG. 19, viewed from below. 20 is a perspective view of the other side of the outer lid provided in the cap unit shown in FIG. 19, viewed from below. FIG. 20 is a perspective view of one side of an inside plug provided in the cap unit shown in FIG. 19, viewed from below. 20 is a perspective view of the other side of the inside plug provided in the cap unit shown in FIG. 19, viewed from below.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
(First embodiment)
First, as a first embodiment of the present invention, a capped container 100A equipped with a cap unit 1A shown in, for example, FIGS. 1 to 18 will be described.

1 is a perspective view showing the appearance of a capped container 100A equipped with a cap unit 1A. FIG. 2 is a cross-sectional view showing the configuration of a capped container 100A equipped with a cap unit 1A. FIG. 3 is a perspective view showing the state in which the inside stopper 10 is in the attached position relative to the outer lid 9 of the cap unit 1A. FIG. 4 is a cross-sectional perspective view, partially cut away, showing the state in which the inside stopper 10 is in the attached position relative to the outer lid 9 of the cap unit 1A. FIG. 5 is a bottom view showing the state in which the inside stopper 10 is in the attached position relative to the outer lid 9 of the cap unit 1A. FIG. 6 is a cross-sectional view showing the state in which the inside stopper 10 is in the removed position relative to the outer lid 9 of the cap unit 1A. FIG. 7 is a perspective view showing the state in which the inside stopper 10 is in the removed position relative to the outer lid 9 of the cap unit 1A. FIG. 8 is a cross-sectional perspective view, partially cut away, showing the state in which the inside stopper 10 is in the removed position relative to the outer lid 9 of the cap unit 1A. FIG. 9 is a bottom view showing the state in which the inside stopper 10 is in the removed position relative to the outer lid 9 of the cap unit 1A. Figure 10 is a bottom view showing the state in which the inside plug 10 is located between the removal position and the attachment position relative to the outer lid 9 of the cap unit 1A. Figure 11 is a perspective view of the outer lid 9 of the cap unit 1A from above. Figure 12 is a bottom view of the outer lid 9 of the cap unit 1A. Figure 13 is a perspective view of one side of the inside plug 10 of the cap unit 1A from above. Figure 14 is a perspective view of one side of the inside plug 10 of the cap unit 1A from below. Figure 15 is a perspective view of the other side of the inside plug 10 of the cap unit 1A from above. Figure 16 is a perspective view of the other side of the inside plug 10 of the cap unit 1A from below. Figure 17 is a top view of the inside plug 10 of the cap unit 1A. Figure 18 is a bottom view of the inside plug 10 of the cap unit 1A.

As shown in Figures 1 and 2, the capped container 100A of this embodiment is a beverage container that includes a container body 2 that is open at the top and a cap unit 1A that can be detachably attached to the container body 2, and is capable of keeping the beverage (contents) contained in the container body 2 hot or cold.

Specifically, the container body 2 has an outer container 3 and an inner container 4 made of metal, such as stainless steel. The container body 2 has a vacuum insulation structure in which the outer container 3, which also has an open end, houses the inner container 4, which also has an open end, inside the outer container 3, which also has an open end, with the open ends of the two containers joined together, and a vacuum insulation layer 5 is provided between the outer container 3 and the inner container 4.

The vacuum insulation layer 5 can be formed, for example, by sealing a vent hole in the center of the bottom surface of the outer container 3 with brazing material in a chamber that has been depressurized (evacuated) to a high vacuum.

By having this vacuum insulation structure, the container body 2 can be endowed with the aforementioned heat or cold insulation functions. Furthermore, by having this vacuum insulation structure, the container body 2 is constantly under tension due to the difference between the internal pressure (vacuum pressure) and the external pressure (atmospheric pressure), increasing the mechanical strength of the outer container 3 and inner container 4. This makes it possible to increase the rigidity of the container body 2 even when the plate thicknesses of the outer container 3 and inner container 4 are reduced, thereby enabling the container body 2 to be made lighter.

The container body 2 has a substantially circular bottom surface 2b, a body portion 2c that rises in a substantially cylindrical shape from the outer periphery of the bottom surface 2b, and a mouth/neck portion 2d that rises in a substantially cylindrical shape from the upper side of the body portion 2c. The upper end of the mouth/neck portion 2d opens in a circular shape as the upper opening 2a of the container body 2.

A female thread 6 is provided on the inner surface of the neck portion 2d. Furthermore, below the female thread 6, a ring-shaped protrusion 7 is provided, protruding from the inner surface of the inner container 4 around the entire circumference.

Note that, although the capped container 100A of this embodiment has an overall, 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. In addition, the outer peripheral surface of the container body 2 (outer container 3) may be painted, printed, etc.

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 18, this 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, and is structured so that this cap body 8 is attached to the container body 2 by screwing.

The cap body 8 has an outer lid 9 that covers the upper opening 2a of the container body 2, an inner stopper 10 that fits inside the container body 2 through the upper opening 2a, and a detachment mechanism 11A that detachably attaches the inner stopper 10 to the outer lid 9.

As shown in Figures 2, 11, and 12, the outer lid 9 is made of, for example, heat-resistant resin, and has a peripheral wall portion 9a formed in a generally cylindrical shape so that its appearance is continuous with the barrel portion 2c of the container body 2, an upper wall portion 9b that closes the upper outer periphery of the peripheral wall portion 9a, and an opening 9c that opens into a generally circular shape in the upper wall portion 9b.

As shown in Figures 2 and 13 to 18, the inside plug 10 is made of, for example, heat-resistant resin and has a substantially circular bottom wall 10a, a substantially cylindrical peripheral wall 10b rising from the periphery of the bottom wall 10a, a top wall 10c closing the upper part of the peripheral wall 10b, and a flange 10d where the top wall 10c protrudes further in the radial direction than the peripheral wall 10b.

The inner plug 10 has a bottomed, generally cylindrical lower plug member 12 that forms the bottom wall portion 10a and peripheral wall portion 10b, and a generally circular upper plug member 13 that forms the top wall portion 10c and flange portion 10d. The lower plug member 12 is integrally attached to the underside of the upper plug member 13 by welding or other means. The interior of the inner plug 10 is not limited to air as an insulating layer, and may instead contain insulating material S.

Furthermore, a male thread portion 14 is provided on the outer peripheral surface of the peripheral wall portion 10b (inner plug 10). In the capped container 100A, the cap body 8 (cap unit 1A) is detachably attached to the container body 2 by threading this male thread portion 14 into the female thread portion 6. Furthermore, the female thread portion 6 and the male thread portion 14 are double-threaded threads that are complementary to each other. When a double-threaded thread is used, the cap body 8 (cap unit 1A) can be attached and detached from the container body 2 with a small rotational movement (approximately 180° in this embodiment).

A waterproof gasket 15 is attached integrally to the outer periphery of the lower end of the inner stopper 10. The waterproof gasket 15 is a ring-shaped sealing member that seals the gap between the protruding portion 7 of the container body 2 and the inner stopper 10, and is made of an elastic material such as a heat-resistant rubber or elastomer, such as silicone rubber. The waterproof gasket 15 is formed integrally with the inner stopper 10 (cap body 8) by insert molding, as described below.

The inner plug 10 has a first recess 10e shaped to correspond to the first protrusion 15a that protrudes inward from the upper end of the inner periphery of the watertight gasket 15, and a second recess 10f shaped to correspond to the second protrusion 15b that protrudes upward from the lower end of the inner periphery of the watertight gasket 15. The inner plug 10 also has a third protrusion 10g shaped to correspond to the third recess 15c of the watertight gasket 15 that is formed between the first recess 10e and second recess 10f of the inner plug 10 and is located between the first protrusion 15a and second protrusion 15b of the watertight gasket 15.

In the cap unit 1A of this embodiment, the first convex portion 15a protruding inward of the watertight gasket 15 is formed integrally with the first concave portion 10e of the inside plug 10, and the second convex portion 15b protruding upward of the watertight gasket 15 is formed integrally with the second concave portion 10f of the inside plug 10. Furthermore, the third concave portion 15c of the watertight gasket 15 and the third convex portion 10g of the inside plug 10 are molded integrally, which increases the adhesive strength of the watertight gasket 15 attached integrally to the inside plug 10 (cap body 8) due to the anchor effect of each.

The underside of the inner plug 10 has a bottom wall 10a that is recessed upward, but is flush with the underside of the watertight gasket 15. This makes it difficult for the watertight gasket 15 to peel off from the inner plug 10 at the boundary between the undersides of the inner plug 10 and the watertight gasket 15. Furthermore, because there are no gaps near the boundary, water droplets are less likely to accumulate, making it hygienic.

In addition, two elastic flanges 15d are provided on the outer peripheral surface of the watertight gasket 15, protruding in the radial direction. When the cap body 8 (cap unit 1A) is attached to the container body 2, the elastic flanges 15d elastically deform and the watertight gasket 15 comes into close contact with the protruding portion 7 of the container body 2 around the entire circumference. This makes it possible to seal (stop water) the gap between the protruding portion 7 (container body 2) and the inside plug 10 (cap body 8).

The waterproof gasket 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, but can be one or more.

Furthermore, the waterproof gasket 15 is not necessarily limited to a configuration provided with the elastic flange portion 15d described above, and its shape, etc., can be modified as appropriate. For example, the waterproof gasket 15 may be configured with an elastic flange portion that protrudes downward and curves from the upper end of the outer periphery.

As shown in Figures 2 to 18, the detachment mechanism 11A is configured to attach the inner plug 10 to the outer lid 9 by rotating the inner plug 10 about its axis from a removal position where the central axis AX of the outer lid 9 is eccentric with respect to the central axis BX of the inner plug 10 to an attachment position where the central axis AX of the outer lid 9 and the central axis BX of the inner plug 10 are aligned.

The top wall 10c of the inside plug 10 is provided with a mark 10h indicating the removal position and the attachment position. Meanwhile, the peripheral wall 9a of the outer lid 9 is provided with a mark 9d indicating the removal position and a mark 9e indicating the attachment position. As a result, when the inside plug 10 is in the removal position relative to the outer lid 9, the marks 9d and 10h of the cap body 8 align, and when the inside plug 10 is in the attachment position relative to the outer lid 9, the marks 9e and 10h align.

Specifically, this detachment mechanism 11A includes a guide engagement portion 18 that engages a first engagement portion 16 provided on the outer lid 9 with a second engagement portion 17 provided on the inner plug 10 to rotatably guide the inner plug 10 relative to the outer lid 9 between the removal position and the attachment position; and a rotational locking portion 21 that locks either a first locking portion 19 provided on the outer lid 9 or a second locking portion 20 provided on the inner plug 10 (in this embodiment, the second locking portion 20) with the other locking portion (in this embodiment, the first locking portion 19) when the inner plug 10 is rotated to the attachment position.

As shown in Figures 11 and 12, the first engagement portion 16 has a pair of cutout recesses 16a, 16b formed by cutting out part of the upper wall portion 9b of the outer lid 9, and a pair of guide walls 16c, 16d protruding inward from between the pair of cutout recesses 16a, 16b.

The pair of cutout recesses 16a, 16b are located on opposite sides of the opening 9c of the outer lid 9, and are arc-shaped cutouts at positions eccentric to the central axis AX of the outer lid 9.

The pair of guide walls 16c, 16d are part of the upper wall 9b located between the pair of cutout recesses 16a, 16b, and are provided in opposing positions across the opening 9c of the outer lid 9. Furthermore, one of the pair of guide walls 16c, 16d, the guide wall 16c, protrudes radially inward from the outer lid 9 more than the other guide wall 16d, in accordance with the oval shape formed by the sum of a circle centered on the central axis BX of the inside plug 10 in the attached position and a circle centered on the central axis BX of the inside plug 10 in the removed position.

The pair of guide walls 16c, 16d are formed by cutting out a portion of the underside of the upper wall portion 9b in the circumferential direction. A pair of stoppers 16e, 16f are provided at the circumferential ends of the pair of guide walls 16c, 16d. Meanwhile, stoppers 16g, 16h are provided on the circumferential opposite sides of the cutout recesses 16a, 16b of the guide walls 16c, 16d.

On the other hand, as shown in Figures 13 to 18, the second engagement portion 17 has a pair of rib walls 17a, 17b that protrude outward from the peripheral wall portion 10b of the inside plug 10, and a pair of guide grooves 17c, 17d formed between the flange portion 10d of the inside plug 10 and the pair of rib walls 17a, 17b.

The pair of rib walls 17a, 17b are provided at opposing positions on the peripheral wall portion 10b of the inside plug 10. Furthermore, to match the shape of the pair of cutout recesses 16a, 16b, one of the pair of rib walls 17a, 17b protrudes radially outward from the inside plug 10 by a greater amount than the other rib wall 17b.

As a result, of the pair of guide grooves 17c, 17d, one guide groove 17c is formed between the flange portion 10d of the inner plug 10 and one rib wall 17a, and the other guide groove 17d is formed between the flange portion 10d of the inner plug 10 and the other rib wall 17b.

In the guide engagement portion 18, in the removal position shown in Figures 6 to 9, the inner plug 10 is inserted from above into the opening 9c of the outer lid 9 while aligning one notched recess 16a with one rib wall 17a and the other notched recess 16b with the other rib wall 17b. This causes the flange portion 10d of the inner plug 10 to abut against the upper wall portion 9b around the opening 9c of the outer lid 9, and the inner plug 10 is engaged with the outer lid 9. Furthermore, in the removal position shown in Figures 6 to 9, the central axis AX of the outer lid 9 is eccentric with respect to the central axis BX of the inner plug 10.

From this state, the guide engagement portion 18 rotates the inside stopper 10 relative to the outer lid 9 toward one side around the arc axis that cuts out the pair of notched recesses 16a, 16b and is positioned eccentrically from the central axis AX of the outer lid 9, thereby engaging one guide wall 16c with one guide groove 17c and the other guide wall 16d with the other guide groove 17d. At this time, the direction in which the inside stopper 10 is rotated around its axis relative to the outer lid 9 coincides with the direction in which the cap body 8 is attached to the container body 2 (the capping direction).

As a result, as shown in Figure 10, the first engagement portion 16 and the second engagement portion 17 are engaged with each other. In this state, the guide engagement portion 18 can guide the inner plug 10 rotatably relative to the outer lid 9 between the removal position and the attachment position.

As shown in Figures 4 and 12, the first engagement portion 19 is located on the underside of the upper wall portion 9b and is composed of a pair of protrusions that protrude inward from the circumferential midpoint of the pair of guide walls 16c, 16d.

On the other hand, as shown in Figures 13 to 16 and 18, the second engagement portion 20 is located midway in the circumferential direction of the pair of rib walls 17a, 17b and is composed of a pair of recesses that cut out part of the tips of the rib walls 17a, 17b.

When the inner plug 10 is rotated relative to the outer lid 9 to the mounting position shown in Figures 2 to 5, the pair of first locking portions 19 are locked to the pair of second locking portions 20 in the pivotable locking portion 21.

In other words, with this detachment mechanism 11A, when the inside plug 10 is rotated relative to the outer lid 9 to the attached position, the pair of rib walls 17a, 17b of the inside plug 10 are elastically deformed, and the pair of first locking portions 19 move over the pair of second locking portions 20, and then are locked by these pair of second locking portions 20. This results in the outer lid 9 and inside plug 10 being integrated.

In addition, the pivotable locking portion 21 can provide a clicking sensation when either the first locking portion 19 or the second locking portion 20 (in this embodiment, the second locking portion 20) is locked with the other locking portion (in this embodiment, the first locking portion 19).

In the mounting position shown in Figures 2 to 5, the central axis AX of the outer lid 9 and the central axis BX of the inner plug 10 are aligned. Furthermore, the peripheral wall portion 9a of the outer lid 9 and the flange portion 10d of the inner plug are substantially flush with the outer peripheral surface of the cap body 8.

In the detachment mechanism 11A configured as described above, in the detachment position shown in Figures 6 to 9, the inner plug 10 is inserted from above into the opening 9c of the outer lid 9 while aligning one notched recess 16a with one rib wall 17a and the other notched recess 16b with the other rib wall 17b, 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 lid 9, thereby engaging the inner plug 10 with the outer lid 9.

From this position, as shown in Figure 10, by rotating the inner plug 10 relative to the outer lid 9 toward one side around the arc axis eccentric from the central axis AX of the outer lid 9, which cuts out the pair of notched recesses 16a, 16b described above, one guide wall 16c engages with one guide groove 17c, and the other guide wall 16d engages with the other guide groove 17d, rotating the inner plug 10 relative to the outer lid 9 from the removal position to the attachment position.

When the inside plug 10 is rotated relative to the outer lid 9 to the mounting position shown in Figures 2 to 5, the pair of first locking portions 19 are locked with the pair of second locking portions 20. Furthermore, one circumferential end of the pair of rib walls 17a, 17b abuts against stoppers 16e, 16f, preventing the inside plug 10 from rotating relative to the outer lid 9. This makes it possible to attach the inside plug 10 to the outer lid 9.

In the detachment mechanism 11A, one side of the inner stopper 10 relative to the outer lid 9 (mounting direction) coincides with the direction in which the cap body 8 is attached to the container body 2 (closure direction). Therefore, when the outer lid 9 is grasped and rotated about its axis in the direction in which the cap body 8 (cap unit 1A) is attached, one circumferential end of the pair of rib walls 17a, 17b abuts against the stoppers 16e, 16f, preventing the inner stopper 10 from rotating relative to the outer lid 9, and the outer lid 9 and inner stopper 10 rotate together. In this case, the cap body 8 can be attached to the container body 2 by rotating the inner stopper 10.

From this state, the guide engagement portion 18 rotates the inner stopper 10 relative to the outer lid 9 toward one side (the installation direction) around an arc axis eccentric from the central axis AX of the outer lid 9, which cuts out the pair of notched recesses 16a, 16b. This causes one guide wall 16c to engage with one guide groove 17c, and the other guide wall 16d to engage with the other guide groove 17d. At this time, the direction in which the inner stopper 10 is rotated around its axis relative to the outer lid 9 coincides with the direction in which the cap body 8 is attached to the container body 2 (the capping direction).

In addition, with the detachment mechanism 11A, the cap body 8 (cap unit 1A) is attached to the container body 2 by threading the male thread portion 14 of the inner stopper 10 into the female thread portion 6 of the container body 2, so that the flange portion 10d of the inner stopper 10 presses against the upper wall portion 9b of the outer lid 9 from above. This prevents the outer lid 9 from rattling in the vertical direction, allowing the container body 2 to be securely closed.

On the other hand, the detachment mechanism 11A performs the reverse operation to that described above, i.e., by rotating the inner plug 10 relative to the outer lid 9 in the opposite direction to that described above, the first locking portion 19 is released from the locked state relative to the second locking portion 20, as shown in Figure 10, and the inner plug 10 is rotated from the attached position to the detached position relative to the outer lid 9.

Furthermore, when the inner plug 10 is rotated relative to the outer lid 9 to the removal position shown in Figures 6 to 9, the other circumferential ends of the pair of rib walls 17a, 17b abut against stoppers 16g, 16h, preventing rotation of the inner plug 10 relative to the outer lid 9.

At this time, one notch recess 16a aligns with one rib wall 17a, and the other notch recess 16b aligns with the other rib wall 17b, allowing the inner plug 10 to be pulled upward through the opening 9c of the outer lid 9. This makes it possible to remove the inner plug 10 from the outer lid 9.

The inner stopper 10 can only be removed from the outer lid 9 when the cap body 8 is removed from the container body 2. In other words, when the cap body 8 is attached to the container body 2, it is impossible to pull the inner stopper 10 upward or pull the outer lid 9 downward. 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.

When removing the cap body 8 (cap unit 1A) from the container body 2, the process is the same as when it was attached, except that the rotation direction is reversed. That is, when the outer lid 9 of the cap body 8 is grasped and rotated relative to the container body 2 in the opposite direction to that used for attachment, one circumferential end of the pair of rib walls 17a, 17b abuts against the stoppers 16e, 16f, causing the inner stopper 10 to rotate integrally with the outer lid 9. This allows the cap body 8 to be removed from the container body 2.

In the detachment mechanism 11A, when the cap body 8 (cap unit 1A) is attached, the central axis AX of the outer lid 9 and the central axis BX of the inside plug 10 coincide. This also coincides with the central axis of the container body 2. In contrast, the rotation axis of the inside plug 10 when attaching or detaching to or from the outer lid 9 is an arc axis that cuts out the pair of notched recesses 16a, 16b and is eccentric from the central axis AX of the outer lid 9 and the central axis BX of the inside plug 10 when attached or detached to or from the outer lid 9. In other words, the rotation axis when attaching the cap body 8 (cap unit 1A) to the container body 2 and the rotation axis when attaching or detaching the inside plug 10 to or from the outer lid 9 are eccentric.

Here, we will explain the rotational movement caused by the threaded engagement between the male thread portion 14 of the inside stopper 10 and the female thread portion 6 of the container body 2 when attaching or detaching the cap body 8 (cap unit 1A) to or from the container body 2. When the outer lid 9 of the cap body 8 is grasped and rotated relative to the container body 2, it rotates around the central axis AX of the outer lid 9 and the central axis BX of the inside stopper 10 at the attachment position, and the cap body 8 is attached to the container body 2. In this case, the rotational axis when attaching or detaching the inside stopper 10 to the outer lid 9 described above is eccentric to the rotational axis when attached to or detached from the container body 2.

Usually, when three or more parts are attached or detached by threading, if they share the same rotation axis, there is a concern that when only one part is attached or detached, the other parts will also be attached or detached at the same time, resulting in a phenomenon known as co-rotation. In contrast, in this embodiment, the two rotation axes described above are eccentric, making it possible to prevent co-rotation, such as the outer lid 9 being unintentionally attached or detached from the inner stopper 10 during the attachment or detachment of the cap body 8 to the container body 2.

In the cap unit 1A of this embodiment, the inner stopper 10 is detachably attached to the outer lid 9, which allows the outer lid 9 and inner stopper 10 to be washed separately, keeping the space between them hygienic.

Therefore, the capped container 100A equipped with such a cap unit 1A can be made even easier to use.

Second Embodiment
Next, as a second embodiment of the present invention, a capped container 100B including a cap unit 1B shown in, for example, FIGS. 19 to 42 will be described.

Note that Figure 19 is a perspective view showing the appearance of a capped container 100B equipped with a cap unit 1B. Figure 20 is a perspective view showing the inside stopper 10 in the attached position relative to the outer lid 9 of the cap unit 1B. Figure 21 is a partially cutaway perspective view showing the inside stopper 10 in the attached position relative to the outer lid 9 of the cap unit 1B. Figure 22 is a bottom view showing the inside stopper 10 in the attached position relative to the outer lid 9 of the cap unit 1B. Figure 23 is a horizontal section showing the inside stopper 10 in the attached position relative to the outer lid 9 of the cap unit 1B. Figure 24 is a perspective view of a key portion of the guide engagement portion 24 viewed from below when the inside stopper 10 is in the attached position relative to the outer lid 9 of the cap unit 1B. Figure 25 is a perspective view of a key portion of the slide locking portion 27 viewed from below when the inside stopper 10 is in the attached position relative to the outer lid 9 of the cap unit 1B. Figure 26 is a perspective view showing the inside stopper 10 in the removed position relative to the outer lid 9 of the cap unit 1B. FIG. 27 is a partially cutaway perspective view showing the inside plug 10 in the removal position relative to the outer lid 9 of the cap unit 1B. FIG. 28 is a bottom view showing the inside plug 10 in the removal position relative to the outer lid 9 of the cap unit 1B. FIG. 29 is a horizontal cross-sectional view showing the inside plug 10 in the removal position relative to the outer lid 9 of the cap unit 1B. FIG. 30 is a perspective view of the guide engagement portion 24 from below when the inside plug 10 is in the removal position relative to the outer lid 9 of the cap unit 1B. FIG. 31 is a perspective view of the slide locking portion 27 from below when the inside plug 10 is in the removal position relative to the outer lid 9 of the cap unit 1B. FIG. 32 is a perspective view showing the inside plug 10 in an intermediate position relative to the outer lid 9 of the cap unit 1B. FIG. 33 is a partially cutaway perspective view showing the inside plug 10 in the intermediate position relative to the outer lid 9 of the cap unit 1B. FIG. 34 is a bottom view showing the state in which the inside plug 10 is in an intermediate position relative to the outer lid 9 of the cap unit 1B. FIG. 35 is a horizontal cross-sectional view showing the state in which the inside plug 10 is in an intermediate position relative to the outer lid 9 of the cap unit 1B. FIG. 36 is a perspective view of a main part of the guide engagement portion 24, as viewed from below, when the inside plug 10 is in an intermediate position relative to the outer lid 9 of the cap unit 1B. FIG. 37 is a perspective view of a main part of the slide locking portion 27, as viewed from below, when the inside plug 10 is in an intermediate position relative to the outer lid 9 of the cap unit 1B. FIG. 38 is a perspective view of the outer lid 9 of the cap unit 1B, as viewed from above. FIG. 39 is a perspective view of one side of the outer lid 9 of the cap unit 1B, as viewed from below. FIG. 40 is a perspective view of the other side of the outer lid 9 of the cap unit 1B, as viewed from below. FIG. 41 is a perspective view of one side of the inside plug 10 of the cap unit 1B, as viewed from below. Figure 42 is a perspective view of the other side of the inside plug 10 of the cap unit 1B, viewed from below. In the following explanation, parts that are the same as those in the cap unit 1A will be omitted and will be denoted by the same reference numerals in the drawings.

As shown in Figure 19, the cap unit 1B of this embodiment is detachably attached to the container body 2 to form the capped container 100B.

Specifically, this cap unit 1B has basically the same configuration as the cap unit 1A, except that instead of the detachment mechanism 11A, it has a detachment mechanism 11B that detachably attaches the inner stopper 10 to the outer lid 9, as shown in Figures 19 to 42.

The detachment mechanism 11B is configured to attach the inner plug 10 to the outer lid 9 by rotating the inner plug 10 from a removal position where the central axis AX of the outer lid 9 is eccentric with respect to the central axis BX of the inner plug 10 around its axis and then sliding the inner plug 10 to an attachment position where the central axis AX of the outer lid 9 and the central axis BX of the inner plug 10 are aligned.

Specifically, as shown in Figures 20 to 42, this detachment mechanism 11B includes a guide engagement portion 24 that engages a first engagement portion 22 provided on the outer lid 9 with a second engagement portion 23 provided on the inner plug 10 to rotatably guide the inner plug 10 relative to the outer lid 9 between the removal position and the attachment position; and a slide engagement portion 27 that engages either a first engagement portion 25 provided on the outer lid 9 or a second engagement portion 26 provided on the inner plug 10 with the other engagement portion (first engagement portion 25 in this embodiment) when the inner plug 10 is slid to the attachment position.

As shown in Figures 38 to 40, the first engagement portion 22 has three cutout recesses 22a, 22b, and 22c formed by cutting out portions of the upper wall portion 9b of the outer lid 9, and three guide walls 22d, 22e, and 22f protruding inward from between the three cutout recesses 22a, 22b, and 22c.

The three notched recesses 22a, 22b, and 22c are arranged side by side around the opening 9c of the outer lid 9. Of these, the notched recess 22a is positioned circumferentially offset to one side from the marker protrusion 28 protruding from the upper surface of the upper wall portion 9b. Meanwhile, the notched recesses 22b and 22c are positioned on either side of the notched recess 22a in the circumferential direction, facing each other across the opening 9c.

The marker protrusion 28 is located on the side opposite the eccentric side of the opening 9c of the upper wall portion 9b, and is continuous with the peripheral wall portion 9a, protruding upward to a height approximately equal to the thickness of the flange portion 10d of the inside plug 10. In this embodiment, the marker protrusion 28 has a substantially semicircular shape in a plan view, but it is not necessarily limited to this shape and may have any shape that serves as a marker.

The three guide walls 22d, 22e, and 22f are part of the upper wall 9b located between the three cutout recesses 22a, 22b, and 22c, and are arranged side by side around the opening 9c of the outer lid 9. Of these, guide wall 22d is located between cutout recesses 22a and 22c, guide wall 22e is located between cutout recesses 22a and 22b, and guide wall 22f is located between cutout recesses 22b and 22c.

The three guide walls 22d, 22e, and 22f are formed by cutting out a portion of the underside of the upper wall portion 9b in the circumferential direction. A stopper 22g is provided on one circumferential side (mounting direction) of guide wall 22f. Furthermore, a stopper 22h is provided on the opposite side of guide wall 22d across the cutout recess 22a.

On the other hand, as shown in Figures 41 and 42, the second engagement portion 23 has three rib walls 23a, 23b, and 23c that protrude outward from the peripheral wall portion 10b of the inside plug 10, and three guide grooves 23d, 23e, and 23f formed between the flange portion 10d of the inside plug 10 and the three rib walls 23a, 23b, and 23c.

The three rib walls 23a, 23b, and 23c are arranged side by side around the periphery of the peripheral wall portion 10b. Of these, rib wall 23a is located in a position that coincides with a marker recess 29 that cuts out a portion of the flange portion 10d. On the other hand, rib walls 23b and 23c are located on either side of rib wall 23a in the circumferential direction, facing each other across the peripheral wall portion 10b.

As a result, of the three guide grooves 23d, 23e, and 23f, guide groove 23d is formed between the flange portion 10d of the inside plug 10 and the rib wall 23a, guide groove 23e is formed between the flange portion 10d of the inside plug 10 and the rib wall 23b, and guide groove 23f is formed between the flange portion 10d of the inside plug 10 and the rib wall 23c.

The marker recess 29 has a roughly semicircular cutout shape in plan view, matching the shape of the marker protrusion 28 described above.

In the guide engagement portion 24, in the removal position shown in Figures 26 to 31, the inner plug 10 is inserted from above into the opening 9c of the outer lid 9 while aligning the notched recess 22a with the rib wall 23a and aligning the notched recesses 22b, 22c with the rib walls 23b, 23c. This causes the inner plug 10 to engage with the outer lid 9, with the flange portion 10d of the inner plug 10 abutting against the upper wall portion 9b around the opening 9c of the outer lid 9. Furthermore, in the removal position shown in Figures 26 to 31, the central axis AX of the outer lid 9 is eccentric with respect to the central axis BX of the inner plug 10.

In addition, to facilitate alignment of the inner plug 10 relative to the outer lid 9, the guide engagement portion 24 has a protrusion 30 in the notched recess 22a that matches the shape of the marking protrusion 28 described above. By aligning the protrusion 30 on the outer lid 9 side with the marking recess 29 on the inner plug 10 side, the inner plug 10 can be easily inserted from above into the opening 9c of the outer lid 9.

From this state, at the guide engagement portion 24, by rotating the inner stopper 10 toward one side about its axis relative to the outer lid 9, guide wall 22d engages with guide groove 23d, guide wall 22e engages with guide groove 23e, and guide wall 22f engages with guide groove 23f. At this time, the direction in which the inner stopper 10 is rotated about its axis relative to the outer lid 9 coincides with the direction in which the cap body 8 is attached to the container body 2 (the capping direction).

As a result, the first engagement portion 22 and the second engagement portion 23 are engaged with each other. In this state, the guide engagement portion 24 can guide the inner plug 10 rotatably relative to the outer lid 9 between the removal position and the intermediate position.

In addition, in the guide engagement portion 24, at the intermediate position shown in Figures 32 to 37, the rib wall 23c abuts against the stopper 22g, preventing the inside plug 10 from rotating past the intermediate position to one side (the installation direction) relative to the outer lid 9 and from sliding to the other side (the removal direction) relative to the outer lid 9. On the other hand, in the guide engagement portion 24, at the removal position shown in Figures 26 to 31, the rib wall 23a abuts against the stopper 22h, preventing the inside plug 10 from rotating past the removal position to the other side (the removal direction) relative to the outer lid 9. This makes it possible to reliably position the inside plug 10 at the intermediate position and the removal position relative to the outer lid 9 when the inside plug 10 is rotated relative to the outer lid 9.

In the intermediate position shown in Figures 32 to 37, the central axis AX of the outer lid 9 is eccentric with respect to the central axis BX of the inside plug 10. Furthermore, in the intermediate position shown in Figures 32 to 37, the marker protrusion 28 on the outer lid 9 side and the marker recess 29 on the inside plug 10 side face each other.

As shown in Figures 38 to 40, the first locking portion 25 has a pair of locking protrusions 25a, 25b. The pair of locking protrusions 25a, 25b are located on the guide walls 22e, 22f on both circumferential sides of the marking protrusion 28 of the upper wall portion 9b, and protrude inward beyond these guide walls 22e, 22f.

On the other hand, as shown in Figures 41 and 42, the second locking portion 26 has a pair of locking recesses 26a and 26b. The pair of locking recesses 26a and 26b correspond to the pair of locking protrusions 25a and 25b and are located inside the guide grooves 23e and 23f, and are formed by recessing part of the peripheral wall portion 10b inward.

As shown in Figures 38 to 42, the slide locking portion 27 also has a slide groove 31a and a pair of slide protrusions 31b provided in the guide wall 22d, a rib wall 23a, and a slide rib 31c provided on the rib wall 23a.

The slide groove 31a is a vertical groove cut out radially at a position coinciding with the marking protrusion 28 of the guide wall 22d. A pair of slide protrusions 31b protrude from the underside of the guide wall 22d in correspondence with the rib wall 23a, and are provided radially downward from both sides of the slide groove 31a. The slide rib 31c is a vertical rib that connects the flange portion 10d and the rib wall 23a in correspondence with the slide groove 31a, and is provided radially from a position coinciding with the marking recess 29.

The slide locking portion 27 slides from the intermediate position shown in Figures 32 to 37 to the attachment position by pushing the inner plug 10 against the outer lid 9, whereupon the slide rib 31c is locked in the slide groove 31a and the rib wall 23a is locked between the pair of slide protrusions 31b.

When the slide locking portion 27 is in the mounting position shown in Figures 20 to 25, the pair of locking protrusions 25a, 25b are locked to the pair of locking recesses 26a, 26b. This allows the first locking portion 25 to be locked to the second locking portion 26.

In addition, the slide locking portion 27 can provide a clicking sensation when either the first locking portion 25 or the second locking portion 26 (in this embodiment, the second locking portion 26) is locked with the other locking portion (in this embodiment, the first locking portion 25).

In the mounting position shown in Figures 20 to 25, the central axis AX of the outer lid 9 and the central axis BX of the inner plug 10 are aligned. Furthermore, the peripheral wall portion 9a of the outer lid 9 and the flange portion 10d of the inner plug are substantially flush with the outer peripheral surface of the cap body 8. Furthermore, the alignment of the marking protrusion 28 and the marking recess 29 makes it possible to visually confirm that the mounting position is correct.

In the detachment mechanism 11B configured as described above, in the detachment position shown in Figures 26 to 31, the inner plug 10 is inserted from above into the opening 9c of the outer lid 9 while aligning the notched recess 22a with the rib wall 23a and the notched recesses 22b, 22c with the rib walls 23b, 23c, 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 lid 9, thereby engaging the inner plug 10 with the outer lid 9.

From this state, by rotating the inner plug 10 to one side around the axis relative to the outer lid 9, guide wall 22d engages with guide groove 23d, guide wall 22e engages with guide groove 23e, and guide wall 22f engages with guide groove 23f, and the inner plug 10 is rotated from the removal position to the intermediate position relative to the outer lid 9.

Furthermore, when the inner plug 10 is rotated relative to the outer lid 9 from the removal position to the intermediate position shown in Figures 32 to 37, the rib wall 23c abuts against the stopper 22g, preventing the inner plug 10 from rotating to one side (the installation direction) beyond the intermediate position relative to the outer lid 9.

From this state, the inner plug 10 is pushed into the outer lid 9 while engaging the slide rib 31c in the slide groove 31a and the rib wall 23a between the pair of slide protrusions 31b, causing it to slide to the attached position. This prevents the inner plug 10 from rotating relative to the outer lid 9 from the attached position, and only allows it to move in the sliding direction (from the attached position to the intermediate position) when removing it.

At this time, the pair of locking projections 25a, 25b lock into the pair of locking recesses 26a, 26b, and the first locking portion 25 locks into the second locking portion 26. This makes it possible to attach the inner plug 10 to the outer lid 9.

In addition, with the detachment mechanism 11B, the cap body 8 (cap unit 1B) is attached to the container body 2 by threading the male thread portion 14 of the inner stopper 10 into the female thread portion 6 of the container body 2, so that the flange portion 10d of the inner stopper 10 presses against the upper wall portion 9b of the outer lid 9 from above. This prevents the outer lid 9 from rattling in the vertical direction, allowing the container body 2 to be securely closed.

When removing the cap body 8 (cap unit 1B) from the container body 2, the process is the same as when it was attached, except that the rotation direction is reversed. That is, when the outer lid 9 of the cap body 8 is grasped and rotated relative to the container body 2 in the opposite direction to that used for attachment, the rib wall 23b abuts against the stopper 22h, and the rib wall 23a abuts against the slide protrusion 31b, causing the inner stopper 10 to rotate integrally with the outer lid 9. This allows the cap body 8 to be removed from the container body 2.

On the other hand, in the detachment mechanism 11B, the engagement between the slide groove 31a and the slide rib 31c is released by performing the reverse operation to that described above, i.e., by sliding the inside plug 10 relative to the outer lid 9 in the opposite direction to that described above, and the engagement between the pair of slide protrusions 31b and the rib wall 23a is also released. Similarly, the engagement between the first locking portion 25 and the second locking portion 26 is released, and the inside plug 10 is slid from the attached position to the intermediate position relative to the outer lid 9.

At this time, a clicking sensation is given, just as when installing as described above. This makes it possible to prevent unintentional movement in the sliding direction. Furthermore, when sliding from the installation position to the intermediate position, a clicking sensation allows you to recognize that the slide has been made.

From this state, the inner stopper 10 is rotated relative to the outer lid 9 to the removal position. Furthermore, when the inner stopper 10 is rotated relative to the outer lid 9 to the removal position, the rib wall 23a abuts against the stopper 22h, preventing the inner stopper 10 from rotating in the other direction (removal direction) beyond the removal position relative to the outer lid 9.

At this time, the notched recess 22a and the rib wall 23a are aligned, and the notched recesses 22b and 22c are aligned with the rib walls 23b and 23c, allowing the inner plug 10 to be pulled upward through the opening 9c of the outer lid 9. This makes it possible to remove the inner plug 10 from the outer lid 9.

The inner stopper 10 can only be removed from the outer lid 9 when the cap body 8 is removed from the container body 2. In other words, when the cap body 8 is attached to the container body 2, it is impossible to pull the inner stopper 10 upward or pull the outer lid 9 downward. 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.

Compared to the cap unit 1A of the first embodiment described above, the cap unit 1B of this embodiment has an additional slide locking portion 27. Therefore, before the inside plug 10 moves from the attached position to the removed position relative to the outer lid 9, it must slide to move to the intermediate position. In other words, the act of sliding the inside plug 10 from the attached position to the intermediate position essentially corresponds to an unlocking action, and unless a sliding action is performed, the outer lid 9 will not rotate from the attached position relative to the inside plug 10.

In addition, when attaching or detaching the cap body 8 with the outer lid 9 and inner stopper 10 in the attached position to or from the container body 2, the slide locking portion 27 passes through an intermediate position, so the rotation axis of the outer lid 9 relative to the inner stopper 10 is already eccentric with respect to the rotation axis when attaching or detaching the cap body 8 to or from the container body 2 before rotation occurs. This makes it possible to more reliably prevent the outer lid 9 from rotating relative to the inner stopper 10 when the cap body 8 is rotated relative to the container body 2 when being attached or detached, which is known as co-rotation.

In the cap unit 1B of this embodiment, the inner stopper 10 is detachably attached to the outer lid 9, which allows the outer lid 9 and inner stopper 10 to be washed separately, keeping the space between them hygienic.

Therefore, the capped container 100B equipped with such a cap unit 1B can be made even easier to use.

The present invention is not necessarily limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, the cap units 1A and 1B are configured such that the inner stopper 10 is attached to the container body 2 by screwing while being fitted into the inside from the upper opening 2a of the container body 2, but the configuration is not necessarily limited to this. For example, the cap units 1A and 1B can also be configured such that the outer lid 9 is attached to the container body 2 by screwing while covering the upper opening 2a of the container body 2 from the outside.

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 removably attached to the container body 2 by threading a male thread portion provided on the outer peripheral surface of the neck portion 2d with a female thread portion provided on the inner peripheral surface of the peripheral wall portion 9a that constitutes the outer lid 9.

Furthermore, the capped containers 100A and 100B are configured to directly open and close the upper opening 2a of the container body 2, as described above, but are not necessarily limited to this configuration. For example, it is also possible to configure the cap units 1A and 1B to be detachably attached to a shoulder member attached to the container body 2.

Furthermore, it is also possible to configure the lid to be freely 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, or the lid may be attached to the cap body via a hinge portion so that it can be freely rotated.

In the above embodiment, the present invention is illustrated as being applied to a beverage container that has a heat-retaining (or cold-retaining) function provided by the container body 2 having the vacuum insulation structure described above. However, the present invention can be widely applied to a lidded container that includes a container body and a lid that can be detachably attached to the container body.

1A, 1B... Cap unit 2... Container body 3... Outer container 4... Inner container 5... Vacuum insulation layer 6... Female thread portion 7... Protruding portion 8... Cap body 9... Outer lid 9c... Opening 10... Inner plug 10d... Flange portion 10e... First recess 10f... Second recess 10g... Third protrusion 11A, 11B... Detachment mechanism 12... Lower plug member 13... Upper plug member 14... Male thread portion 15... Watertight gasket 16... First engagement portion 16a, 16b... Notched recess 16c, 16d... Guide wall 16e, 16f, 16g, 16h... Stopper 17... Second engagement portion 17a, 17b... Rib wall 17c, 17d... Guide groove 18... Guide engagement portion 19... First locking portion 20... Second locking portion 21... Rotating locking portion 22... First locking portion 22a, 22b, 22c... Notched recesses 22d, 22e, 22f... Guide walls 22g, 22h... Stoppers 23... Second locking portion 23a, 23b, 23c... Rib walls 23d, 23e, 23f... Guide grooves 24... Guide locking portion 25... First locking portion 25a, 25b... Locking protrusions 26... Second locking portion 26a, 26b... Locking recesses 27... Slide locking portion 28... Marking protrusions 29... Marking recesses 30... Protrusion 31a... Slide groove 31b... Slide protrusions 31c... Slide ribs 100A, 100B... Capped container

Claims (9)

A cap unit that can be detachably attached to a container body having an open top,
an outer lid surrounding the top of the container body;
an inside plug fitted into the container body from an upper opening of the container body;
a detachment mechanism for detachably attaching the inner plug to the outer lid,
The detachment mechanism is characterized in that the inner plug is attached to the outer lid by rotating the inner plug around its axis from a removal position where the central axis of the outer lid, which passes through the center of the outer lid and is circular in top view , is eccentric with respect to the central axis of the inner plug, which passes through the center of the inner plug and is circular in top view, to an attachment position where the central axes of the outer lid and the inner plug are aligned. A cap unit that can be detachably attached to a container body having an open top,
an outer lid surrounding the top of the container body;
an inside plug fitted into the container body from an upper opening of the container body;
a detachment mechanism for detachably attaching the inner plug to the outer lid,
The detachment mechanism is characterized in that the inner plug is attached to the outer lid by rotating the inner plug around its axis from a removal position where the central axis of the outer lid, which passes through the center of the outer lid and is circular in top view , is eccentric with respect to the central axis of the inner plug, which passes through the center of the inner plug and is circular in top view, and then sliding the inner plug to an attachment position. A cap unit as described in claim 1 or 2, characterized in that, in the removal position, the inner plug is inserted from above into the opening provided in the upper part of the outer lid, and a flange portion protruding in the radially expanding direction from the outer periphery of the upper end of the inner plug is brought into contact with the periphery of the opening in the outer lid, thereby engaging the inner plug with the outer lid. In the removal position, the inner plug is inserted from above into the opening provided in the upper part of the outer lid, and a flange portion protruding in the radially expanding direction from the outer periphery of the upper end side of the inner plug is brought into contact with the periphery of the opening of the outer lid, thereby engaging the inner plug with the outer lid,
the detachment mechanism includes a guide engagement portion that guides the inside plug rotatably relative to the outer lid between the removal position and the attachment position by engaging a first engagement portion provided on the outer lid with a second engagement portion provided on the inside plug;
The cap unit according to claim 1, characterized in that it is provided with a rotational locking portion in which, when the inner plug is rotated to the mounting position, either a first locking portion provided on the outer lid or a second locking portion provided on the inner plug is locked to the other locking portion. In the removal position, the inner plug is inserted from above into the opening provided in the upper part of the outer lid, and a flange portion protruding in the radially expanding direction from the outer periphery of the upper end side of the inner plug is brought into contact with the periphery of the opening of the outer lid, thereby engaging the inner plug with the outer lid,
the detachment mechanism includes a guide engagement portion that guides the inside plug rotatably relative to the outer lid between the removal position and the attachment position by engaging a first engagement portion provided on the outer lid with a second engagement portion provided on the inside plug;
The cap unit according to claim 2, characterized in that it is provided with a slide locking portion in which, when the inner plug is slid to the mounting position, either a first locking portion provided on the outer lid or a second locking portion provided on the inner plug is locked to the other locking portion. A cap unit as described in claim 4 or 5, characterized in that a clicking sensation is provided when one of the locking portions is locked with the other locking portion. The cap unit described in any one of claims 1 to 6, characterized in that the inner stopper or the outer lid is attached to the container body by screwing. The cap unit described in any one of claims 1 to 7, characterized in that it includes a waterproof gasket that is integrally attached to the outer periphery of the lower end of the inner plug and seals the gap between the container body and the inner plug. A cap unit according to any one of claims 1 to 8;
A capped container comprising: a container body to which the cap unit is attached.