JP2024015083A - Cap unit and container with cap - Google Patents

Abstract

An object of the present invention is to provide a cap unit that can maintain good sealing performance of a liquid passage hole. [Solution] A cap body 8 is provided with a liquid passage hole 12 that communicates with the inside of the container body 2, an outer lid 17 that covers the outside of the cap body 8, and a cap body 8 that is inserted into the inside of the cap body 8 and that communicates with the inside of the container body 2. A lid body 9 is provided with an inner stopper 18 that closes the liquid hole 12, and a lid packing 21 that seals between the inside of the cap body 8 and the inner stopper 18 when attached to the outer periphery of the inner stopper 18. The lid packing 21 is fitted in a ring-shaped groove 22 provided on the outer periphery of the inner stopper 18, and the groove 22 is formed on the upper wall surface facing the upper surface of the lid packing 21. 22a, a lower wall surface 22b facing the lower surface of the lid packing 21, and an inner wall surface 22c that contacts the inner circumferential surface of the lid packing 21 between the upper wall surface 22a and the lower wall surface 22b, and the upper wall surface 22a has: It is provided so as to protrude from the lower wall surface 22b in the diametrical direction. [Selection diagram] Figure 6

Description

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

BACKGROUND ART Conventionally, there have been containers with caps that include a cap unit (stopper) that is detachably attached to a container body with an open top. The cap unit also includes a cap body that is attached to the mouth and neck of the container body with an open top and is provided with a liquid passage hole that communicates with the inside of the container body, and a lid that opens and closes the liquid passage hole. (For example, see Patent Document 1 below.)

Specifically, Patent Document 1 below includes an outer lid that covers the outside of the cap body, and an inner stopper that is fitted inside the cap body and closes the liquid passage hole. A structure is disclosed in which the lid body is detachably attached to the cap body by screwing together a female threaded part provided on the inner stopper and a male threaded part provided on the outer periphery of the inner stopper.

Further, in Patent Document 1 below, a water-stop gasket attached to the outer periphery of the lower end of the cap body seals between the inside of the container body and the cap body, and is attached to the outer periphery of the inner stopper. A structure is disclosed in which the lid packing seals between the inside of the cap body and the inner stopper.

JP2014-162544A

By the way, in the above-mentioned conventional container with a cap, when the container body is turned upside down and placed upside down, the beverage (liquid) contained in the container body leaks through the gap between the cap body and the inner stopper and passes through the lid packing. There were times when the fluid could get over and leak into the inside of the fluid hole.

In particular, if the container body falls upside down, the impact of the collision with the ground may cause the beverage contained in the container body to press against the lid packing, causing the lid packing to shift from the outer periphery of the inner stopper. there were. In this case, it is difficult to maintain good sealing of the liquid passage hole by the lid packing.

The present invention has been proposed in view of such conventional circumstances, and includes a cap unit that makes it possible to maintain good sealing properties of liquid passage holes, and by providing such a cap unit, The purpose is to provide a container with a cap that allows for further improvement in usability.

In order to achieve the above object, the present invention provides the following means.
[1] A cap body that is detachably attached to the mouth and neck of a container body with an open top and is provided with a liquid passage hole that communicates with the inside of the container body;
A lid that is detachably attached to the cap body and includes an outer lid that covers the outside of the cap body, and an inner plug that is fitted inside the cap body and closes the liquid passage hole. body and
a lid packing that is attached to the outer periphery of the inner stopper and seals between the inside of the cap body and the inner stopper;
The lid packing is attached in a state where it is fitted into a ring-shaped groove provided on the outer periphery of the inner stopper,
The groove portion includes an upper wall surface facing the upper surface of the lid packing, a lower wall surface facing the lower surface of the lid packing, and an inner surface that contacts the inner circumferential surface of the lid packing between the upper wall surface and the lower wall surface. It has a wall surface,
The cap unit is characterized in that the upper wall surface is provided so as to protrude in a diametrical direction than the lower wall surface.
[2] The lid packing has an elastic flange portion protruding from its outer circumferential surface in a diametrically expanding direction,
The cap unit according to item [1], wherein the elastic flange portion is in close contact with the inside of the cap body, thereby sealing the space between the inside of the cap body and the inner stopper.
[3] The outer circumferential end of the upper wall surface is located on the outer circumferential side of the base end of the elastic flange portion and on the inner circumferential side of the distal end of the elastic flange portion. Cap unit as described.
[4] The cap unit according to [2] or [3], wherein the outer peripheral end of the lower wall surface is located on the inner peripheral side of the base end of the elastic flange.
[5] The lid body can be attached to and removed from the cap body by screwing the female threaded part provided on the inner circumference of the cap body and the male threaded part provided on the outer circumference of the inner stopper. The cap unit according to any one of [1] to [4] above, characterized in that the cap unit is attached to.
[6] The cap unit according to any one of [1] to [5] above;
A container with a cap, comprising: a container body to which the cap unit is attached.

As described above, according to the present invention, there is provided a cap unit that makes it possible to maintain good sealing properties of the liquid passage hole, and by providing such a cap unit, it is possible to further improve usability. It is possible to provide a container with a cap.

FIG. 1 is a cross-sectional view showing the configuration of a capped container including a cap unit according to an embodiment of the present invention. FIG. 2 is a perspective view of the configuration of the cap unit shown in FIG. 1 viewed from below. FIG. 2 is a bottom view showing the configuration of the cap unit shown in FIG. 1. FIG. FIG. 2 is an exploded perspective view of the configuration of the cap unit shown in FIG. 1 viewed from above. FIG. 2 is an exploded perspective view of the configuration of the cap unit shown in FIG. 1 viewed from below. FIG. 2 is a sectional view of a main part of the capped container shown in FIG. 1 in an inverted state. It is a sectional view showing another composition of water stop packing. FIG. 8 is a sectional view showing the cap unit to which the water stop packing shown in FIG. 7 is attached. It is a sectional view showing another composition of water stop packing. FIG. 10 is a sectional view showing the cap unit to which the water stop packing shown in FIG. 9 is attached.

Embodiments of the present invention will be described in detail below with reference to the drawings.
As one embodiment of the present invention, a capped container 100 equipped with a cap unit 1 shown in FIGS. 1 to 6, for example, will be described.

Note that FIG. 1 is a sectional view showing the configuration of a capped container 100 including a cap unit 1. As shown in FIG. FIG. 2 is a perspective view of the configuration of the cap unit 1 viewed from below. FIG. 3 is a bottom view showing the configuration of the cap unit 1. FIG. 4 is an exploded perspective view of the structure of the cap unit 1 viewed from above. FIG. 5 is an exploded perspective view of the structure of the cap unit 1 viewed from below. FIG. 6 is a sectional view of a main part showing the capped container 100 in an inverted state.

As shown in FIG. 1, the capped container 100 of this embodiment includes a cap unit 1 of this embodiment and a container body 2 to which this cap unit 1 is detachably attached. The capped container 100 is a beverage container that can keep the beverage (liquid) contained in the container body 2 hot or cold by the container body 2 having a vacuum insulation structure.

Specifically, this container body 2 has a bottomed cylindrical outer container 3 and an inner container 4 made of, for example, stainless steel, and with the inner container 4 housed inside the outer container 3, the openings of each other are connected to each other. It consists of a double-layer container that is joined together. Further, a vacuum heat insulating layer 5 is provided between the outer container 3 and the inner container 4. The vacuum heat insulating layer 5 can be formed, for example, by closing a deaeration hole provided at the center of the bottom surface of the outer container 3 in a chamber that is reduced in pressure (evacuated) to a high vacuum.

The container body 2 includes a substantially circular bottom part 2a, a body part 2b that stands up in a substantially cylindrical shape from the outer periphery of the bottom part 2a, and a substantially cylindrical mouth and neck part 2c whose diameter is reduced at the upper side of the body part 2b. It has Further, the upper end portion of the mouth and neck portion 2c is opened in a circular shape as the upper opening portion 2d of the container body 2.

The inner circumferential surface of the mouth and neck portion 2c is smaller in diameter than the inner circumferential surface of the trunk portion 2b. Further, a first female screw portion 6 is provided on the inner circumferential surface of the mouth and neck portion 2c. The first female screw portion 6 is composed of a screw thread that protrudes downward from the upper end of the mouth and neck portion 2c in a spiral manner. Furthermore, a ring-shaped projecting portion 7 is provided below the first female threaded portion 6 so as to protrude from the inner peripheral surface of the container body 2 over the entire circumference.

Note that although the capped container 100 of this embodiment has an approximately cylindrical external shape as a whole, the external shape of the capped container 100 is not particularly limited, and may vary depending on size, design, etc. It is possible to make changes as appropriate. Furthermore, the outer peripheral surface of the container body 2 may be painted, printed, or the like.

As shown in FIGS. 1 to 5, the cap unit 1 of this embodiment constitutes a stopper that closes the upper opening 2d of the container body 2, and is attached to and detached from the cap body 8. It is provided with a lid body 9 that can be freely attached.

The cap body 8 has a cylindrical outer cylinder member 10 and an inner cylinder member 11 made of a heat-resistant resin such as polypropylene (PP). Further, the cap body 8 may have a structure in which the outer cylinder member 10 and the inner cylinder member 11 are integrally formed.

In the cap body 8, the locking protrusion 10a provided on the inner peripheral surface of the outer cylinder member 10 is locked in the locking recess 11a provided on the outer peripheral surface of the inner cylinder member 11, so that the outer cylinder member 10 An inner cylindrical member 11 passing through is integrally attached to the outer cylindrical member 10. For the outer cylinder member 10, in addition to the above-mentioned PP, it is also possible to use a thermoplastic resin such as acrylonitrile butadiene styrene (ABS).

A liquid passage hole 12 serving as a drinking spout or spout is provided inside the inner cylinder member 11 (cap body 8). The liquid passage hole 12 has a tapered hole portion 12a whose diameter is gradually reduced downward from the upper end of the inner cylinder member 11 (cap body 8), and a taper hole portion 12a which has the same diameter downward from the lower end of the tapered hole portion 12a. 1 straight hole 12b, a stepped portion 12c at the lower end of the first straight hole 12b that is smaller in diameter than the first straight hole 12b, and a stepped portion 12c having the same diameter downward from the stepped portion 12c. 2 straight hole portions 12d.

A first male threaded portion 13 is provided on the outer peripheral surface of the inner cylinder member 11 on the lower side with the outer cylinder member 10 interposed therebetween. The first male threaded portion 13 is comprised of a screw thread that protrudes upward from the lower end of the inner cylinder member 11 in a spiral manner. Thereby, the cap body 8 is removably attached to the mouth and neck part 2c of the container body 2 by the screw threads of the first female threaded part 6 and the first male threaded part 13. There is.

A water stop packing 14 is detachably attached to the outer peripheral portion of the lower end of the inner cylinder member 11 (cap body 8). The water stop packing 14 is a ring-shaped seal member that seals between the inside of the container body 2 and the cap body 8, and is made of an elastic member such as a heat-resistant rubber such as silicone rubber or an elastomer.

A flange portion 11b is provided on the outer peripheral portion of the lower end side of the inner cylinder member 11 so as to protrude in the diametrical direction. On the other hand, a ring-shaped fitting recess 14a is provided on the inner peripheral surface of the water stop packing 14 over the entire circumference. The water stop packing 14 is fitted around the entire circumference of the lower end side of the inner cylindrical member 11, with the flange portion 11b being fitted into the fitting recess 14a.

Further, on the outer circumferential surface of the water stop packing 14, a plurality of (two in this embodiment) elastic flange portions 14b arranged in the vertical direction are provided so as to protrude in the diametrical direction. When the cap body 8 is attached to the mouth and neck part 2c of the container body 2, the water stop packing 14 is tightly attached to the overhang part 7 of the container body 2 over the entire circumference while the elastic flange part 14b is elastically deformed. The state will be as follows. This makes it possible to seal the space between the projecting portion 7 (inside the container body 2) and the inner cylinder member 11 (cap body 8).

Further, it is preferable that the lower elastic flange portion 14b of the water stop packing 14 contacts the top side of the overhang portion 7, and the upper elastic flange portion 14b contacts the inlet side of the overhang portion 7. Thereby, it is possible to improve the sealing performance between the projecting portion 7 (inner side of the container body 2) and the inner cylinder member 11 (cap body 8).

On the other hand, the water stop packing 14 can be removed from the outer periphery of the lower end of the inner cylindrical member 11 (cap body 8) by elastically deforming (pulling and stretching) itself. Thereby, the water stop packing 14 and the cap main body 8 can be washed separately, and the space between the water stop packing 14 and the cap main body 8 can be kept sanitary.

Note that the water stop packing 14 is not necessarily limited to the shape described above, and for example, the number of elastic flange portions 14b is not limited to the two described above, but may be one or three or more. It is also possible. Further, the water stop packing 14 is not necessarily limited to the configuration in which the elastic flange portion 14b described above is provided, and its shape etc. can be changed as appropriate.

The outer peripheral surface of the outer cylinder member 10 (cap body 8) is formed into a substantially cylindrical shape so as to be flush with the body 2b of the container body 2. Further, a second female screw portion 15 is provided on the inner peripheral surface of the inner cylinder member 11 (cap body 8). The second female threaded portion 15 is composed of a plurality of (four in this embodiment) threaded protrusions that protrude from the position where the second straight hole 12d of the inner cylinder member 11 is formed. Furthermore, a plurality of gaps 15a are provided between the plurality of threaded protrusions for returning the beverage (liquid) remaining inside the inner cylinder member 11 (cap body 8) to the container body 2 side. .

The upper side of the inner cylindrical member 11 with the outer cylindrical member 10 interposed therebetween forms a wide mouth portion 16 whose diameter gradually increases toward the upper end in accordance with the shape of the tapered hole portion 12a. Thereby, the beverage (liquid) flowing out from the liquid passage hole 12 can be made easier to drink or pour.

The lid body 9 opens and closes the liquid passage hole 12, and has an outer lid 17 and an inner stopper 18 made of a heat-resistant resin such as PP.

The outer lid 17 is a part that covers the outside of the cap body 8, and includes a peripheral wall portion 17a formed in a substantially cylindrical shape so as to be flush with the outer circumferential surface of the outer cylinder member 10 (cap body 8), and a peripheral wall portion 17a. It has a ceiling wall part 17b that covers the upper part of the. The inner plug 18 is a part that closes the liquid passage hole 12 when fitted inside the cap body 8, and includes a substantially circular bottom wall portion 18a and a peripheral wall rising from the periphery of the bottom wall portion 18a in a substantially cylindrical shape. 18b.

The inner stopper 18 is located at the center inside the outer lid 17, and the peripheral wall 18b is integrally attached to the center of the lower surface of the top wall 17b by welding or the like. Further, a heat insulating material 19 is arranged inside the inner stopper 18. Note that, instead of the heat insulating material 19, air (space) serving as a heat insulating layer may be provided inside the inner stopper 18.

A second male threaded portion 20 is provided on the outer peripheral surface of the peripheral wall portion 18b (inner stopper 18). The second male threaded portion 20 is comprised of a pair of threaded grooves spirally cut upward from the lower end of the peripheral wall portion 18b. As a result, the inner plug 18 (lid 9) has an inner cylinder by screwing the thread projections forming the second female thread part 15 into the thread grooves forming the second male thread part 20. It is detachably attached to the inner peripheral portion of the member 11 (cap body 8).

Further, the second male threaded portion 20 is composed of two threads that are complementary to each other. When a double thread screw is used, it is possible to attach and detach the lid body 9 to and from the cap body 8 with a small rotational operation (approximately 160 degrees in this embodiment).

A lid packing 21 is detachably attached to the outer periphery of the inner stopper 18. The lid packing 21 is a ring-shaped sealing member that seals between the liquid passage hole 12 (inside the cap body 8) and the inner stopper 18, and is made of heat-resistant material such as silicone rubber, like the water-stop packing 14 described above. It is made of an elastic material such as rubber or elastomer.

On the other hand, a ring-shaped groove portion 22 is provided on the outer peripheral surface of the peripheral wall portion 18b (inner stopper 18) over the entire circumference. The lid packing 21 is fitted into this groove 22 over the entire circumference.

On the outer peripheral surface of the lid packing 21, a plurality of (two in this embodiment) elastic flange portions 21a are arranged vertically and protrude in the diametrical direction. When the lid body 9 is attached to the cap body 8, the lid packing 21 comes into close contact with the liquid passage hole 12 over the entire circumference while the elastic flange portion 21a is elastically deformed. This makes it possible to seal the space between the liquid passage hole 12 (inside the cap body 8) and the inner stopper 18.

In addition, when the inner stopper 18 closes the liquid passage hole 12, the lid packing 21 has an elastic flange portion in the first straight hole portion 12b near the boundary between the tapered hole portion 12a and the first straight hole portion 12b. It is preferable that 21a be in close contact with each other. As a result, when removing the lid body 9 from the cap body 8, the elastic flange portion 21a is moved slightly from the state in which it is in close contact with the first straight hole portion 12b to the tapered hole portion 12a side, and the liquid passage hole 12 ( It is possible to open the space between the inside of the cap body 8) and the inner stopper 18.

On the other hand, the lid packing 21 can be removed from the groove 22 by elastically deforming itself (stretching and stretching). Thereby, the lid packing 21 and the lid body 9 can be washed separately, and the space between the lid packing 21 and the lid body 9 can be kept sanitary.

Note that the lid packing 21 is not necessarily limited to the shape described above, and for example, the number of elastic flange portions 21a is not limited to the two mentioned above, but may be one or three or more. is also possible. Further, the lid packing 21 is not necessarily limited to the configuration in which the elastic flange portion 21a described above is provided, and its shape etc. can be changed as appropriate.

By the way, in the cap unit 1 of this embodiment, the water stop packing 14 has a lower surface protrusion 14c that closes the gap S between the inner stopper 18 and the cap body 8, as shown in FIG. .

The lower surface protrusion 14c is provided so as to protrude from the lower end of the cap body 8 in the diameter reduction direction. Thereby, the lower surface side protrusion 14c is in contact with the vicinity of the outer periphery of the bottom wall portion 18a of the inner plug 18 over the entire circumference in a state where the inner plug 18 closes the liquid passage hole 12.

It should be noted that the water-stopping property due to the contact between the lower surface side protrusion part 14c and the vicinity of the outer peripheral part of the bottom wall part 18a does not need to be completely sealed. It is sufficient that the space formed between the container and the lower surface side protrusion 14c has water-tightness to the extent that the beverage does not fill the space.

In the cap unit 1 of this embodiment, as shown in FIG. 6, even when the capped container 100 is turned upside down and the container body 2 is inverted, the gap S between the inner stopper 18 and the cap body 8 is maintained. By closing the lower surface side protrusion 14c, the beverage (liquid) contained in the container body 2 passes through the gap 15a from the gap S, overcomes the lid packing 21, and leaks to the inside of the liquid passage hole 12. It is possible to prevent this.

In the cap unit 1 of this embodiment, the groove portion 22 has an upper wall surface 22a facing the upper surface of the lid packing 21, a lower wall surface 22b facing the lower surface of the lid packing 21, and an upper wall surface, as shown in FIG. It has an inner wall surface 22c that contacts the inner circumferential surface of the lid packing 21 between the lower wall surface 22b and the inner wall surface 22a.

The upper wall surface 22a is provided so as to protrude in the diametrical direction than the lower wall surface 22b. Specifically, the outer circumferential end of the upper wall surface 22a is located on the outer circumferential side of the base end of the elastic flange portion 21a and on the inner circumferential side of the tip portion of the elastic flange portion 21a. On the other hand, the outer peripheral end of the lower wall surface 22b is located closer to the inner peripheral side than the base end of the elastic flange portion 21a. Thereby, when the lid packing 21 is fitted into the groove 22, it is difficult to roll up upward from the inside of the groove 22.

Therefore, in the cap unit 1 of this embodiment, as shown in FIG. 6, even if the capped container 100 falls in an inverted state, the beverage contained in the container body 2 may be damaged by the impact when it collides with the ground or the like. It is possible to press the lid packing 21 and prevent the lid packing 21 from shifting from the groove 22.

In addition, in the cap unit 1 of the present embodiment, the lower surface protrusion 14c closes the gap S between the inner stopper 18 and the cap main body 8, so that the beverage contained in the container main body 2 is transferred to the lid packing 21. It is possible to suppress pressing the .

As described above, in the cap unit 1 of this embodiment, it is possible to maintain good sealing performance of the liquid passage hole 12. Therefore, by providing the capped container 100 of this embodiment with such a cap unit 1, it is possible to further improve the usability.

Note that the present invention is not necessarily limited to the embodiments described above, and various changes can be made without departing from the spirit of the present invention.
For example, the cap unit 1 may have a configuration in which another water stop packing 14A as shown in FIGS. 7 and 8 is attached. Note that FIG. 7 is a sectional view showing the configuration of the water stop packing 14A. FIG. 8 is a sectional view showing the cap unit 1 to which the water stop packing 14A is attached.

Specifically, as shown in FIG. 7, the water stop packing 14A has an upwardly bent portion 14d in which the distal end side of the lower surface side protruding portion 14c is bent upward.

In the cap unit 1 to which this water stop packing 14A is attached, as shown in FIG. 8, when the inner stopper 18 closes the liquid passage hole 12, the upwardly bent portion 14d is elastically deformed, and the lower protruding portion 14c is in contact with the vicinity of the outer periphery of the bottom wall portion 18a of the inner stopper 18 over the entire circumference.

In the case of this configuration, it is possible to improve the adhesion of the lower surface side protrusion 14c to the vicinity of the outer periphery of the bottom wall portion 18a of the inner stopper 18.

On the other hand, the cap unit 1 may have a configuration in which another water stop packing 14B as shown in FIGS. 9 and 10 is attached. Note that FIG. 9 is a sectional view showing the configuration of the water stop packing 14B. FIG. 10 is a sectional view showing the cap unit 1 to which the water stop packing 14B is attached.

Specifically, as shown in FIG. 9, the water stop packing 14B has a downwardly bent portion 14e in which the distal end side of the lower surface side protruding portion 14c is bent downward.

In the cap unit 1 to which this water stop packing 14B is attached, as shown in FIG. The downwardly bent portion 14e is in contact with the vicinity of the outer periphery and over the entire periphery, and is spaced apart from the lower surface of the inner plug 18.

In this configuration, the downwardly bent portion 14e of the water stop packing 14B is easy to pinch. Thereby, it is possible to easily remove the water stop packing 14 from the inner stopper 18 (lid body 9).

Regarding the water stop packings 14, 14A, and 14B, when the inner plug 18 closes the liquid passage hole 12, the lower protrusion 14c is spaced apart from the vicinity of the outer periphery of the bottom wall portion 18a of the inner plug 18. , when pressed by the beverage contained in the container body 2, the lower protrusion 14c may be elastically deformed and brought into contact with the outer periphery of the lower surface of the inner stopper 18.

In addition, in the above embodiment, the capped container 100 is exemplified in which the container body 2 having the vacuum insulation structure described above has heat and cold insulation functions, but the capped container 100 has a container body that does not have a vacuum insulation structure. The present invention can be applied to containers.

DESCRIPTION OF SYMBOLS 100... Container with a cap 1... Cap unit 2... Container main body 6... First female screw part 7... Projection part 8... Cap main body 9... Lid body 10... Outer cylinder member 11... Inner cylinder member 12... Liquid passage hole 13 ...First male screw part 14, 14A, 14B...Water stop packing 14c...Bottom side protrusion part 14d...Upward bending part 14e...Downward bending part 15...Second female thread part 17...Outer lid 18...Inner stopper 20... Second male screw part 21...Lid packing 21a...Elastic flange part 22...Groove part 22a...Upper wall surface 22b...Lower wall surface 22c...Inner wall surface S...Gap

Claims (6)

a cap body that is removably attached to the mouth and neck of a container body with an open top and is provided with a liquid passage hole that communicates with the inside of the container body;
A lid that is detachably attached to the cap body and includes an outer lid that covers the outside of the cap body, and an inner plug that is fitted inside the cap body and closes the liquid passage hole. body and
a lid packing that is attached to the outer periphery of the inner stopper and seals between the inside of the cap body and the inner stopper;
The lid packing is attached in a state where it is fitted into a ring-shaped groove provided on the outer periphery of the inner stopper,
The groove portion includes an upper wall surface facing the upper surface of the lid packing, a lower wall surface facing the lower surface of the lid packing, and an inner surface that contacts the inner circumferential surface of the lid packing between the upper wall surface and the lower wall surface. It has a wall surface,
The cap unit is characterized in that the upper wall surface is provided so as to protrude in a diametrical direction than the lower wall surface. The lid packing has an elastic flange portion protruding from its outer peripheral surface in a diametrically expanding direction,
2. The cap unit according to claim 1, wherein the elastic flange portion is in close contact with the inside of the cap body, thereby sealing the space between the inside of the cap body and the inner stopper. The cap unit according to claim 2, wherein the outer peripheral end of the upper wall surface is located on the outer peripheral side of the base end of the elastic flange portion and on the inner peripheral side of the tip end of the elastic flange portion. . 4. The cap unit according to claim 2, wherein the outer peripheral end of the lower wall surface is located on the inner peripheral side of the base end of the elastic flange. The lid body is removably attached to the cap body by screwing a female threaded part provided on the inner periphery of the cap body and a male threaded part provided on the outer periphery of the inner stopper. The cap unit according to any one of claims 1 to 4, characterized in that: The cap unit according to any one of claims 1 to 5,
A container with a cap, comprising: a container body to which the cap unit is attached.

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