JP7354163B2 - lid and container - Google Patents

Description

The present invention relates to lids and containers.

A lid that is attached to the mouth of a container that stores water to be supplied to a server body is known. Patent Document 1 discloses a cap having an inner stopper fitted to close a communication hole.

JP 2019-142592 Publication

In some cases, a container is connected to the server main body, and the container has a lid attached to the container mouth, which has a lid body and an inner stopper that is removably inserted into the opening of the lid body. In this case, when the container is removed from the server body, a problem arises in that the inner stopper comes off from the lid body.

Therefore, the present invention has been made in view of these points, and an object of the present invention is to provide a lid that makes it difficult to remove the inner stopper.

In a first aspect of the present invention, the lid is attached to a container mouth of a container main body for storing water, and the lid includes a cylindrical portion having a first opening inserted into the container mouth; a lid body having a lid opening provided inside a cylindrical portion and having a cylindrical second opening smaller than the first opening; and a lid main body that is removably inserted into the second opening. an inner stopper; the lid opening has a first region having a first inner diameter; and a lid opening that is closer to the first opening than the first region in the direction in which the lid is attached to the container body. a second region provided at a close position and having a second inner diameter larger than the first inner diameter, and the inner stopper is removably inserted into the second opening. an inner plug body; an inner rib provided on the outer peripheral surface of the inner plug body and having a first outer diameter larger than the first inner diameter; and an inner rib provided on the outer peripheral surface of the inner plug body; When the inner plug is inserted into the second opening, the inner plug is provided at a position closer to the first opening than the inner rib in the longitudinal direction of the inner plug, and has a second inner diameter larger than the first inner diameter. a plurality of outer ribs having an outer diameter of .

Moreover, the second outer diameter may be smaller than the first outer diameter. In addition, the inner plug includes a first outer rib as the plurality of outer ribs, and in a state where the inner plug is inserted into the second opening, the inner plug has a first outer rib that is longer than the first outer rib in the longitudinal direction of the inner plug. a second outer rib provided at a position close to the first opening, and in the longitudinal direction of the inner plug, the length between the inner rib and the first outer rib is the first outer rib. and the second outer rib.

A second aspect of the present invention provides a container including the container body and a lid attached to the container mouth of the container body.

According to the present invention, there is an effect that the inner stopper becomes difficult to come off in the lid.

The structure of the water server provided with the container based on this embodiment is shown. The structure of the inflow section is shown. The structure of the container is shown. The structure near the lid of the container is shown. The structure of the lid is shown. The structure of the lid body is shown. The structure of the inner stopper is shown. The structure of the lid opening and inner stopper is shown. This figure shows the state of the lid area when the container is attached to and removed from the server body. The structure of a conventional inner stopper is shown. An example of the state of the inner plug inserted into the opening of the lid opening is shown.

[Configuration of water server A]
FIG. 1 is a diagram showing the configuration of a water server A in which a container S according to the present embodiment is provided. Note that FIG. 1 is a diagram showing the configuration of the vicinity of the container S in the water server A. FIG. 1(a) is a diagram showing a state in which the container S is attached to the server body B. As shown in FIG. FIG. 1(b) is a diagram showing a state in which the container S is removed from the server body B. FIG. FIG. 2 is a diagram showing the structure of the inflow section 2. As shown in FIG. Note that FIG. 2 shows the vicinity of the inlet portion 2 in the cross-sectional view taken along the line XX in FIG. 1(b).

Container S contains water. The container S is attached to the server body B of the water server A. Water server A is a water supply or water heater that supplies cold or hot water for drinking to users. The server main body B maintains the water supplied from the container S as cold water or hot water, and causes the cold water or hot water to flow out from an outlet (not shown).

The server main body B has a main body part 1 and an inflow part 2. The main body part 1 is a part that keeps the water supplied from the container S as cold water or hot water, and allows the cold water or hot water to flow out from an outlet (not shown). An opening 11 is formed in the main body portion 1 . The opening 11 is an opening into which water flowing out from the inflow portion 2 flows.

[Structure of inflow section 2]
The inflow part 2 is a part into which water flowing out from the container S flows. The inflow section 2 allows water flowing out from the container S to flow therein, and causes the inflowing water to flow out into the main body section 1 . The inlet portion 2 is provided above the main body portion 1 .

As shown in FIG. 2, the inflow section 2 has an inflow section main body 21. As shown in FIG. The inlet main body 21 has a cylindrical region. The inlet main body 21 has a recess 211, a plurality of openings 212, and a recess 213. The recess 211 is formed on the side surface of the inlet main body 21 that is connected to the main body 1 of the server main body B. The recess 211 extends in the longitudinal direction of the inlet 2 .

The opening 212 is formed on the outer peripheral surface of the inlet main body 21. The opening 212 is an opening into which water flowing out from the container S flows. The opening 212 communicates with the space inside the recess 211 . A plurality of openings 212 are formed on the outer circumferential surface of the inlet main body 21. The plurality of openings 212 are formed at the same position in the longitudinal direction of the inflow part main body 21 and at opposing positions in the circumferential direction of the inflow part main body 21. The number and position of the plurality of openings 212 are arbitrary.

Water that has flowed in through the plurality of openings 212 flows inside the recess 211 , flows inside the recess 211 , and flows out from the recess 211 . The water flowing out from the recess 211 then flows into the opening 11 formed in the main body 1.

The recess 213 is formed around the outer circumferential surface of the inlet main body 21 in the circumferential direction. The concave portion 213 is a concave portion into which a convex portion 512 of the inner stopper 5, which will be described later, is inserted. In the longitudinal direction of the inflow portion 2 , the recess 213 is formed at a position farther from the end of the inflow portion 2 connected to the main body 1 than the opening 212 .

[Structure of container S]
FIG. 3 is a diagram showing the structure of the container S. FIG. 4 is a diagram showing the structure of the container S near the lid T.
The container S has a container body 3 and a lid T. The container body 3 accommodates water. The container body 3 is integrally manufactured from PET resin. The container body 3 has a container opening 31 . The container opening 31 has a cylindrical shape. An opening 311 is formed in the container mouth portion 31 .

[Structure of lid T]
FIG. 5 is a diagram showing the structure of the lid T. FIG. 6 is a diagram showing the structure of the lid body 4. As shown in FIG. FIG. 7 is a diagram showing the structure of the inner plug 5. As shown in FIG. FIG. 8 is a diagram showing the structure of the lid opening portion 42 and the inner stopper 5. As shown in FIG.

The lid T is attached to the container opening 31 of the container body 3. The lid T needs to ensure sealing performance and is manufactured from a different material from the container body 3. The lid T has a lid main body 4 and an inner stopper 5. The lid main body 4 has a cylindrical portion 41, a lid mouth portion 42, and a side wall portion 43. The cylindrical portion 41 has a cylindrical shape. The cylindrical part 41 is inserted into the container mouth part 31. As shown in FIG. 4, when the lid T is attached to the container mouth 31 of the container body 3, a part of the outer peripheral surface of the cylindrical portion 41 is in contact with the inner peripheral surface of the container mouth 31. .

The cylindrical portion 41 has an opening 411. The inflow portion 2 is inserted into the opening 411 . When manufacturing the lid T, a seal is attached to the outer surface of the cylindrical part 41 to cover the opening 411, and when the container S is attached to the server body B, the container S is attached to the server body B with the seal removed. It is attached.

The lid opening portion 42 is provided inside the cylindrical portion 41. The lid opening 42 has a cylindrical shape. An opening 421 is formed in the lid opening 42 . Aperture 421 is smaller than aperture 411. The inner stopper 5 is inserted into the opening 421.

The lid opening portion 42 has a first region 422 and a second region 423. The first region 422 is a region whose inner diameter is the first inner diameter. The second region 423 is provided at a position closer to the opening 411 than the first region 422 in the direction in which the lid T is attached to the container body 3, and is a region whose inner diameter is the second inner diameter. The second inner diameter is larger than the first inner diameter.

The side wall portion 43 has a cylindrical shape. An annular connecting portion extending toward the end of the outer peripheral surface of the cylindrical portion 41 on the opening 411 side is formed at the end of the side wall portion 43 on the opening 411 side. The inner circumferential surface of the connecting portion is connected to the end of the outer circumferential surface of the cylindrical portion 41 on the opening 411 side. As shown in FIG. 4, when the lid T is attached to the container mouth 31 of the container body 3, the side wall 43 is located outside the outer peripheral surface of the container mouth 31.

A groove is formed on the outer peripheral surface of the side wall portion 43, and only the lid T can be removed from the container mouth portion 31 by tearing the groove. With the lid T having such a structure, the container body 3 which is integrally manufactured from PET resin can be reused.

The inner stopper 5 is removably inserted into the opening 421. The inner stopper 5 has an inner stopper main body 51 , an inner rib 52 , a plurality of outer ribs 53 , and an engaging portion 54 . The inner plug main body 51 is removably inserted into the opening 421. The inner plug main body 51 has a recess 511, a projection 512, and a rib 513. The recess 511 is formed on the surface of the inner plug main body 51 on the opening 411 side when the inner plug 5 is inserted into the opening 421. The inflow portion 2 is inserted into the recess 511 .

The convex portion 512 projects toward the inside of the concave portion 511 . The convex portion 512 is provided in the circumferential direction at the end of the inner peripheral surface of the recess 511 on the side of the opening 411 when the inner stopper 5 is inserted into the opening 421 . The convex portion 512 is inserted into the concave portion 213 of the inflow portion 2 .

The rib 513 is provided on the outer peripheral surface of the inner plug body 51. When the inner plug 5 is not inserted into the opening 421, the outer diameter of the rib 513 is larger than the first inner diameter. When the inner stopper 5 is inserted into the opening 421, the rib 513 is deformed by the first region 422 of the lid opening 42 so that the outer diameter of the rib 513 becomes the same as the first inner diameter. When the inner plug 5 is inserted into the opening 421, the outer peripheral surface of the rib 513 pushes the inner peripheral surface of the first region 422 of the lid opening 42 from the inside to the outside. It is in contact with the inner circumferential surface of the first region 422 of the portion 42 .

The inner rib 52 is provided on the outer peripheral surface of the inner plug main body 51 and has a first outer diameter. The first outer diameter is larger than the first inner diameter. The inner rib 52 is provided at a position closer to the opening 411 than the rib 513 in the longitudinal direction of the inner plug 5 when the inner plug 5 is inserted into the opening 421. When the inner stopper 5 is not inserted into the opening 421, the first outer diameter is larger than the outer diameter of the rib 513. As shown in FIG. 5, when the inner plug 5 is inserted into the opening 421, the inner rib 52 is located in the second region 423.

The plurality of outer ribs 53 are provided on the outer peripheral surface of the inner plug main body 51, and are located at positions closer to the opening 411 than the inner ribs 52 in the longitudinal direction of the inner plug 5 when the inner plug 5 is inserted into the opening 421. and has a second outer diameter. The second outer diameter is larger than the first inner diameter. As shown in FIG. 5, when the inner stopper 5 is inserted into the opening 421, the plurality of outer ribs 53 are located in the second region 423.

The engaging portion 54 is provided at the end of the inner plug body 51 on the opposite side to the opening 411 side in the longitudinal direction of the inner plug 5 when the inner plug 5 is inserted into the opening 421 . The engaging portion 54 has a third outer diameter. The third outer diameter is larger than the outer diameter of the rib 513, the first outer diameter, and the second outer diameter. The engaging portion 54 is in contact with the end of the lid mouth portion 42 on the side opposite to the opening 411 when the inner stopper 5 is inserted into the opening 421.

[How to attach and detach container S to server body B]
FIG. 9 is a diagram showing the state of the vicinity of the lid T when the container S is attached to and detached from the server body B. FIG. 9(a) is a diagram showing the state of the vicinity of the lid T when the container S is not attached to the server body B. FIG. FIG. 9(b) is a diagram showing the state around the lid T when the container S is attached to the server body B. FIG.

The case where the container S is attached to the server body B will be explained. When attaching the container S to the server body B, the user positions the lid T of the container S above the inflow section 2 with the lid T side facing downward (FIG. 9(a)). Then, when the container S is moved toward the server main body B, the upper end of the inlet main body 21 is inserted into the inside of the recess 511 of the inner plug main body 51. Further, the convex portion 512 of the inner plug body 51 is inserted into the concave portion 213 of the inlet body 21.

Then, when the container S is further moved toward the server body B, the inner stopper 5 is separated from the lid main body 4 while the inner stopper 5 is attached to the inlet main body 21. The plurality of openings 212 of the inlet main body 21 are located inside the container opening 31 of the container main body 3 (FIG. 9(b)). As a result, the water contained in the container S flows into the inside of the inflow part 2 through the plurality of openings 212 of the inflow part 2. In this way, the container S can be attached to the server body B.

Next, a case in which the container S is removed from the server body B will be described. When removing the container S from the server main body B, the container main body 3 may be contracted, for example, because the amount of water contained in the container S decreases. Therefore, the inside of the container body 3 may be under negative pressure.

When the user wants to remove the container S from the server body B, the user moves the container S away from the server body B. At this time, when the container body 3 is moved upward, the end of the lid mouth portion 42 of the lid body 4 on the opening 421 side comes into contact with the engaging portion 54 of the inner stopper 5, and the inner stopper 5 is moved to the inlet portion 2. Push away from. At this time, the inner rib 52 and the plurality of outer ribs 53 of the inner stopper 5 pass through the first region 422 of the lid opening 42 and are located in the second region 423 . At this time, the rib 513 of the inner stopper 5 is pushed inside the first region 422 of the lid opening 42, so that the outer peripheral surface of the rib 513 of the inner stopper 5 becomes the inner periphery of the first region 422 of the lid opening 42. touch the surface.

Then, by further moving the container body 3 upward, the convex portion 512 of the inner plug body 51 inserted into the concave portion 213 of the inflow portion body 21 is moved from the inside of the concave portion 213 of the inflow portion body 21 to the outside. to move the inner stopper 5 in a direction away from the inflow portion 2. Then, the user moves the container S upward with the inner stopper 5 attached to the lid body 4.

Specifically, the user grasps both sides of the container body 3, which has shrunk due to a decrease in the amount of water contained therein, for example. Then, the user may, for example, rotate the container body 3 in the circumferential direction of the inflow portion 2 and then move the container body 3 in the contracted state upward, or pull out the container body S upward at once. . Furthermore, as described above, the container S removed from the server main body B is contracted under negative pressure inside the container main body 3, so that the inner stopper 5 is moved by air from the opening 411 into the container main body 3. It may be pushed inward.

In this manner, the container S can be removed from the server body B with the inner stopper 5 inserted into the opening 421 of the lid mouth portion 42 of the lid body 4.

FIG. 10 is a diagram showing the structure of a conventional inner plug 9. As shown in FIG.
The conventional inner stopper 9 differs from the inner stopper 5 in that it does not have a plurality of outer ribs.
The inner plug 9 has an inner plug main body 91, an inner rib 92, and an engaging portion 94. The inner stopper main body 91, like the inner stopper main body 51, is removably inserted into the opening 421. The inner plug main body 91 has a recess 911, a protrusion 912, and a rib 913, like the inner plug main body 51. Similar to the recess 511, the recess 911 is formed on the surface of the inner plug main body 91 on the opening 411 side when the inner plug 9 is inserted into the opening 421. The inflow portion 2 is inserted into the recess 911 .

The convex portion 912, like the convex portion 512, protrudes toward the inside of the concave portion 911. The protrusion 912 is provided in the circumferential direction at the end of the inner peripheral surface of the recess 911 on the opening 411 side when the inner stopper 9 is inserted into the opening 421. The convex portion 912 is inserted into the concave portion 213 of the inflow portion 2 .

Like the rib 513, the rib 913 is provided on the outer peripheral surface of the inner plug body 91. When the inner plug 9 is not inserted into the opening 421, the outer diameter of the rib 913 is larger than the first inner diameter. When the inner plug 9 is inserted into the opening 421, the rib 913 is deformed by the first region 422 of the lid opening 42 so that the outer diameter of the rib 913 becomes the same as the first inner diameter. When the inner plug 9 is inserted into the opening 421, the outer peripheral surface of the rib 913 pushes the inner peripheral surface of the first region 422 of the lid opening 42 from the inside to the outside. It is in contact with the inner circumferential surface of the first region 422 of the portion 42 .

Like the inner rib 52, the inner rib 92 is provided on the outer peripheral surface of the inner plug body 91, and has a first outer diameter. The inner rib 92 is provided at a position closer to the opening 411 than the rib 913 in the longitudinal direction of the inner plug 9 when the inner plug 9 is inserted into the opening 421. When the inner stopper 9 is not inserted into the opening 421, the first outer diameter is larger than the outer diameter of the rib 913. In a state where the inner plug 9 is inserted into the opening 421, the inner rib 92 is located in the second region 423.

When removing the container S from the server main body B, for example, the container main body 3 is rotated in the circumferential direction of the inflow part 2, and then the container main body 3 in a contracted state is moved upward, or the container S is removed from the server main body B. The inner stopper 5 may be pulled out at once from the main body 3, or the inner stopper 5 may be pushed toward the inside of the container main body 3 because the inner side of the container S removed from the server main body B is under negative pressure as described above. In some cases, force is applied in a direction that moves the inner stopper 5 away from the opening 411. Since the conventional inner stopper 9 has the above-described structure, when the inner stopper 9 moves away from the opening 411 due to such force, the first region 422 and the second region 423 in the lid opening 42 Since the inner rib 92 is the only rib in contact with the step portion between and the inner peripheral surface of the first region 422 of the lid opening 42, the inner stopper 9 easily comes off from the lid opening 42 of the lid T.

On the other hand, the inner stopper 5 is provided with a plurality of outer ribs 53 in addition to the inner ribs 52 on the outer peripheral surface of the inner stopper 5 as described above. Therefore, in the lid T, when the container S is removed from the server body B, if the inner stopper 5 moves away from the opening 411 due to the force described above, the first region 422 and the second region in the lid opening 42 In addition to the inner ribs 52, the ribs in contact with the stepped portion between the region 423 and the region 423 include a plurality of outer ribs 53.

In addition, in the lid T, when the container S is removed from the server body B, if the inner stopper body 51 is moved by the force described above, the plurality of outer ribs 53 in addition to the inner ribs 52 move into the first region 422. To position. In this case, the area where the inner circumferential surface of the cap opening 422 and the rib of the inner stopper 5 are in contact is the area where the inner circumferential surface of the first region 422 of the cap opening 42 and the outer circumferential surface of the inner rib 52 are in contact with each other. The area where the inner circumferential surface of the first region 422 of the portion 42 and the outer circumferential surface of the plurality of outer ribs 53 are in contact with each other is added. Therefore, in the lid T, the inner stopper 5 becomes difficult to come off from the lid opening portion 42.

FIG. 11 is a diagram showing an example of the state of the inner stopper 5 inserted into the opening 421 of the lid opening 42. As shown in FIG.
As shown in FIG. 11, when the container S is removed from the server body B, even if the inner stopper 5 is tilted with respect to the longitudinal direction of the lid opening 42, the outer rib 53 It touches the stepped portion between the region 422 and the second region 423. As a result, in the lid T, the outer rib 53 is caught on the stepped portion between the first region 422 and the second region 423 in the lid opening 42, making it difficult for the inner stopper 5 to come off from the lid opening 42.

The inner plug 5 is provided with a first outer rib 531 and a second outer rib 532 as the plurality of outer ribs 53. The second outer rib 532 is provided at a position closer to the opening 411 than the first outer rib 531 in the longitudinal direction of the inner plug 5 when the inner plug 5 is inserted into the opening 421. In the longitudinal direction of the inner plug 5, the length between the inner rib 52 and the first outer rib 531 is greater than or equal to the length between the first outer rib 531 and the second outer rib 532.

With the inner plug 5 having such a structure, when the inner plug 5 is inserted into the opening 421, the closer to the opening 411 in the longitudinal direction of the inner plug 5, the larger the number of ribs per unit length is. can do. As a result, the farther the inner stopper 5 is from the lid opening 42, the more the inner circumferential surface of the first area 422 of the lid opening 42 and the step between the first area 422 and the second area 423 of the lid opening 42. Since the ribs come into contact with each other easily, the inner stopper 5 becomes difficult to come off from the lid opening 42.

Further, the second outer diameter is smaller than the first outer diameter. Because the inner stopper 5 has such an inner rib 52 and a plurality of outer ribs 53, even if a plurality of outer ribs 53 are provided in addition to the inner rib 52, when the container S is removed from the server main body B, It is possible to prevent the inner stopper 5 from becoming difficult to insert into the first region 422 of the lid opening 42.

[Verification test]
In the verification test, two different lids (lid T with inner plug 5 and lid with inner plug 9) were prepared. Then, the containers, each having a lid with an inner stopper attached to the container opening 31, were attached to the server main body B. After the container was attached to the server body B, the container was pulled out from the server body B at once after 6 hours.

This process was repeated, and when the container was pulled out from the server body B all at once, the number of times the inner stopper came off from the opening 421 of the lid mouth portion 42 of the lid body 4 was counted. Then, the occurrence rate of the event in which the inner stopper came off from the opening 421 of the lid mouth portion 42 of the lid main body 4 was calculated.

Table 1 shows the results of the validation test.
The number of times of testing is the number of times the container was attached to the server body B and then pulled out from the server body B at once after 6 hours. The number of occurrences is the number of times the inner stopper has come off from the opening 421 of the lid mouth portion 42 of the lid main body 4. The occurrence rate is the incidence of an event in which the inner stopper comes off from the opening 421 of the lid mouth portion 42 of the lid main body 4.

The inner stopper as a comparative example is inner stopper 9. In the comparative example, out of 10 tests, the inner stopper 9 came off the opening 421 of the lid opening 42 of the lid main body 4 9 times, and the occurrence rate was 90%. The inner stopper as an example is the inner stopper 5. In the example, out of 10 tests, the number of times the inner stopper 5 came off from the opening 421 of the lid mouth portion 42 of the lid main body 4 was 0 times, and the occurrence rate was 0%.

In this way, in the example, the incidence rate is significantly reduced compared to the comparative example, and the inner stopper 5 as the example has a lower lid opening of the lid main body 4 than the inner stopper 9 as the comparative example. It was verified that it became difficult to remove from the opening 421 of the portion 42. From this result, providing a plurality of outer ribs 53 in addition to the inner ribs 52 on the outer peripheral surface of the inner plug body 51 makes it difficult for the inner plug 5 to come off from the opening 421 of the lid opening 42 of the lid main body 4. It is considered to be effective.

[Effects of lid T according to this embodiment]
The lid T is a lid T that is attached to the container mouth 31 of the container body 3 that stores water, and includes a cylindrical cylindrical part 41 having an opening 411 inserted into the container mouth 31, and a cylindrical part 41 of the cylindrical part 41. A lid main body 4 having a lid opening 42 provided on the inside and having a cylindrical opening 421 smaller than the opening 411, and an inner stopper 5 detachably inserted into the opening 421. have The lid opening portion 42 is provided in a first region 422 having a first inner diameter and in a position closer to the opening 411 than the first region 422 in the direction in which the lid T is attached to the container body 3. , and a second region 423 having a second inner diameter larger than the first inner diameter.

The inner stopper 5 includes an inner stopper main body 51 that is removably inserted into the opening 421, and is provided on the outer peripheral surface of the inner stopper main body 51, and has a first outer diameter larger than the first inner diameter. It has an inner rib 52. In addition, the inner plug 5 is provided on the outer peripheral surface of the inner plug main body 51, and in a state where the inner plug 5 is inserted into the opening 421, the inner plug 5 is located at a position closer to the opening 411 than the inner rib 52 in the longitudinal direction of the inner plug 5. It has a plurality of outer ribs 53 having a second outer diameter larger than the first inner diameter.

The lid T according to this embodiment thus has the inner stopper 5 having a plurality of outer ribs 53 in addition to the inner rib 52. Therefore, when removing the container S from the server body B, if a force is applied to the inner stopper 5 in the direction away from the opening 411 and the inner stopper 5 moves away from the opening 411, the inner stopper 5 moves away from the opening 411. The step portion between the first region 422 and the second region 423 and the ribs in contact with the inner circumferential surface of the first region 422 constitute a plurality of outer ribs 53 in addition to the inner ribs 52 . As a result, in the lid T, when the container S is removed from the server body B, the inner stopper 5 is difficult to come off from the lid mouth portion 42 of the lid body 4.

Although the present invention has been described above using the embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments, and various modifications and changes can be made within the scope of the gist. be. For example, all or part of the device can be functionally or physically distributed and integrated into arbitrary units. In addition, new embodiments created by arbitrary combinations of multiple embodiments are also included in the embodiments of the present invention. The effects of the new embodiment resulting from the combination have the effects of the original embodiment.

A... Water server B... Server main body 1... Main body part 11... Opening 2... Inflow part 21... Inflow part main body 211... Recessed part 212... Opening 213... Recess S... Container 3... Container body 31... Container mouth 311... Opening T... Lid 4... Lid body 41... Cylindrical portion 411... Opening 42... Lid mouth portion 421...Opening 422...First region 423...Second region 43...Side wall portion 5...Inner plug 51...Inner plug body 511...Concave portion 512... Convex portion 513...Rib 52...Inner rib 53...Outer rib 531...First outer rib 532...Second outer rib 54...Engaging portion 9...Conventional inner plug 91... Inner plug body 911... Concave portion 912... Convex portion 913... Rib 92... Inner rib 94... Engaging portion

Claims (3)

A lid attached to a cylindrical container mouth formed on a container body that stores water,
A lid main body attached to the container mouth,
a portion forming a first opening into which an inflow portion of a water server provided in a cylindrical shape is inserted;
a cylindrical cylindrical part inserted inside the container mouth part;
a lid opening portion provided inside the cylindrical portion and having a cylindrical second opening smaller than the first opening;
a lid body having a cylindrical side wall located outside the outer circumferential surface of the container mouth and in contact with the outer circumferential surface;
an inner stopper that is removably inserted into the second opening;
has
The lid opening portion is
a first region whose inner diameter is a first inner diameter;
a second region that is provided at a position closer to the first opening than the first region in the direction in which the lid is attached to the container body, and has an inner diameter that is a second inner diameter larger than the first inner diameter; and,
has
The inner stopper is
an inner plug body that is removably inserted into the second opening;
an inner rib provided on the outer peripheral surface of the inner plug body and having a first outer diameter larger than the first inner diameter;
Provided on the outer peripheral surface of the inner plug main body, and provided at a position closer to the first opening than the inner rib in the longitudinal direction of the inner plug when the inner plug is inserted into the second opening. a plurality of outer ribs having a second outer diameter larger than the first inner diameter and smaller than the first outer diameter ;
with a lid. The inner plug includes the plurality of outer ribs,
a first outer rib;
a second outer rib provided at a position closer to the first opening than the first outer rib in the longitudinal direction of the inner plug when the inner plug is inserted into the second opening;
has
In the longitudinal direction of the inner stopper, the length between the inner rib and the first outer rib is greater than or equal to the length between the first outer rib and the second outer rib.
A lid according to claim 1 . The container body;
The lid according to claim 1 or 2 , which is attached to the container mouth of the container body;
Container with.

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