JP2000116540A - Liquid container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure prevention of liquid leaks in liquid container bodies while they are mounted with a cap-cum-cup, and washing of liquid off seal members set on the container bodies and caps. SOLUTION: A liquid container 1 is mounted with a detachable cap 32 serving also as a cup on the top of its container body 2. The cap 32 has at least partially a seal member placed in butt contact with the external surface of the container body 2 to prevent an external leak of liquid remaining in the space between the cap 32 and the container body 2. The container body 2 has, alternatively, at its place circling the opening of the cap 32 a seal member 31 put in butt contact with the internal surface of the cap 32 to prevent an external leak of liquid remaining in the space between the container body 2 and the cap 32.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable liquid container for storing a liquid such as drinking water.

[0002]

2. Description of the Related Art A liquid container such as a portable device of this type includes a container main body for storing a liquid such as drinking water, and a lid which is attached to an upper portion of the container main body and serves also as an inner stopper and a cup. The container main body is made of a vacuum double container made of stainless steel or glass, or a container made of resin or the like having a heat insulating structure, and the inner plug is detachably attached to the mouth thereof. As a structure for attaching the lid to the container body, a screw portion is provided on each of the shoulder and the lid of the container body,
A well-known attachment structure such as a structure in which they are screwed together is applied.

[0003] In the liquid container, when the liquid in the container body is drunk using the lid also serving as the cup, the liquid adheres to the inner surface of the lid, and the liquid is attached to the container body. It remains in the space formed by. Also, the liquid
When the outflow passage formed in the inner stopper or the inner stopper and the shoulder is closed, the outflow passage adheres to the outflow passage and remains, and when the container body is tilted or tilted, the lid is moved from the outflow passage to the lid. Leaks into the body. Alternatively, it is vaporized and condensed in the lid to adhere to the lid, and as a result, remains in a space formed when the lid is attached to the container body.

[0004] Here, the phenomenon that the liquid adheres is difficult to occur because the water-repellent function works well when each member is new, but the water-repellent function is reduced as the members are used. The above phenomenon gradually increases. In this way, when liquid leaks from the portable liquid container,
As a secondary problem, the user's clothes may become dirty with liquid,
There is a possibility that a problem that the surroundings of a bag, a seat of a car, and the like become dirty may occur.

Therefore, conventionally, in Japanese Utility Model Publication No. 9-2388 and Japanese Utility Model Publication No. 59-41786, a step for mounting the opening of the lid on the container body is formed, and the opening of the lid at this step is formed. There is provided a liquid container in which a sealing material is disposed at a position where the sealing member is in contact with the portion, so that liquid remaining between the lid and the container body can be prevented from leaking outside.

[0006]

However, in the liquid container, the liquid remaining in the space between the container body and the lid accumulates on the step of the container body, and the liquid penetrates into the gap between the sealing material and the container body. It was easy to do. In this case, the formation of the step portion at the relatively lower portion also has an effect, and it has been difficult to completely remove the liquid that has entered during the cleaning. In addition, when the sealing member is attached to the lid, there is a disadvantage that the dirt due to the liquid that has been exposed to the outside and penetrated into the gap can be seen. Further, there is also a disadvantage that odor is generated from the liquid that has entered.

In order to solve the above-mentioned inconvenience, it is conceivable to completely adhere the sealing material to the container body. However, in this case, workability at the time of production deteriorates,
The problem of cost increase arises.

Further, in order to solve the above-mentioned inconvenience, if the periphery of the sealing material provided on the container body is sufficiently washed, in the case of a structure having a bottom member as disclosed in Japanese Utility Model Publication No. There is also an inconvenience that water is easily immersed between the main body.

In view of the above, a first object of the present invention is to surely prevent the liquid from leaking in a state in which a lid serving also as a cup is attached to the container main body, and the present invention is provided on the container main body or the lid. It is a second object of the present invention to provide a liquid container capable of reliably cleaning liquid remaining in a sealing material.

[0010]

According to a first aspect of the present invention, there is provided a liquid container in which a lid serving also as a cup is detachably mounted on an upper portion of a container body. At least a part thereof is provided with a seal member which is in contact with the outer peripheral portion of the container main body to prevent the liquid remaining in the space with the container main body from leaking outside.

According to the liquid container, since the sealing material is provided on the lid that also serves as the glass, it is possible to reliably prevent the liquid remaining in the space between the container body and the lid from leaking to the outside. it can. In addition, because the lid can be washed whole,
Even if the liquid in the space adheres to the sealing material, it can be easily washed and removed.

Specifically, it is preferable that the entire lid is formed of a sealing material, and a contact portion between the lid and the container body is a sealing portion. Further, the sealing material may be provided in an opening of the lid, and a contact portion between the sealing material and the container body may be a sealing portion. Further, the sealing material may be provided on an inner peripheral portion of the opening of the lid, and a contact portion between the sealing material and the container body may be a sealing portion. Furthermore, the sealing material may be provided on the entire inner peripheral portion of the lid, and a contact portion between the sealing material and the container body may be a sealing portion. And, the sealing material is provided above the opening of the lid,
The contact portion between the sealing material and the container body may be a sealing portion. It is more preferable to perform a water-repellent treatment on the surface of the sealing material provided on these lids, since it is possible to suppress the attachment of water droplets.

A liquid container according to a second aspect of the present invention is a liquid container in which a lid also serving as a cup is detachably mounted on an upper portion of the container main body, from a position facing the opening of the lid in the container main body. A seal member is provided at an upper portion to prevent a liquid remaining in a space between the lid and the inner periphery of the lid from leaking to the outside.

According to the liquid container of the second aspect of the invention, since the sealing member is provided above the position facing the opening of the lid in the container body, even if the liquid adheres to the sealing member, As compared with a conventional liquid container, it can be easily washed. Further, there is an advantage that the sealing material is covered with the lid and cannot be seen from the outside even if dirt remains.

In the liquid container according to the second aspect of the present invention, it is preferable that a fitting groove is provided in the lid at a position facing the sealing material, and a fitting portion between the fitting groove and the sealing material is a sealing portion. Further, a step may be provided at a position of the lid facing the seal material, and a contact portion between the step and the seal material may be a seal portion.

[0016]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 and 2 show a liquid container 1 according to a first embodiment of the present invention. This liquid container 1
It is a well-known one that includes a container body 2 made of a metal thermos and a lid 15 also serving as a cup attached to an upper portion of the container body 2. In addition, a bottom member 4 for protecting the vacuum sealing portion is attached to a lower portion of the container body 2.

More specifically, the container body 2 has a shoulder 3 integrally formed on the upper part thereof, and an inner plug 5 is detachably attached to a mouth at an upper end thereof. A screw portion 2 a for attaching and holding the lid 15 is provided on an upper outer peripheral portion of the shoulder portion 3. As shown in FIG. 1, the inner plug 5 includes a plug body 6, a valve body 7, a plug cap 8, a flap 10 for opening and closing a spout of an outflow passage 9 formed in the plug body 6, and It is a well-known device provided with a switch 11 for operating the flap 10 and the valve element 7.

The cover 15 of the first embodiment is formed entirely of a sealing material. As the sealing material, fluorine rubber, silicon rubber, synthetic resin elastomer, or the like can be used. The cover 15 has the screw 2
A similar screw portion 15a that is screwed to the screw member a is provided. The hardness of the sealing material is preferably a hardness of 80 (IRHD) or less measured in accordance with JIS K6253. Further, the surface of the sealing material (lid 15) may be subjected to a water-repellent treatment such as coating.

In the liquid container 1, liquid such as cold drinking water or warm drinking water stored in the container body 2 is drunk using the lid 15 also serving as a glass, and the liquid adheres to the inner surface of the lid 15. When the lid 15 is attached to the container main body 2 in a state where the lid 15 is in the upright position, as shown in FIG. At the lower end). Further, the liquid remaining or attached in the outflow passage 9 of the inner plug 5 is
When the liquid container 1 is tilted or tilted, it leaks into the lid 15, or vaporizes and condenses in the lid 15, so that the liquid remains in the space between the lid 15 and the container body 2. .

In this state, when the container body 2 has a heat insulating structure as in this embodiment and the stored liquid is hot water, the temperature of the space formed in the lid 15 rises and the pressure of the space increases. Although the pressure tends to be higher than the atmospheric pressure and the liquid remaining in the lid 15 tends to leak to the outside due to a pressure difference, the lid 15 made of a sealing material is screwed into the space. The opening of the lid 15 is in contact with the shoulder 3 of the container body, and the contact portion serves as a seal portion, so that airtightness is maintained. As a result, it is possible to prevent the liquid from leaking from the space to the outside, and it is possible to prevent a secondary problem due to the liquid from leaking in the case of the portable liquid container 1 or the like.

Further, since the lid 15 of the present embodiment is entirely formed of a sealing material, the entire lid 15 can be washed in a round manner to sufficiently clean the adhered liquid. As a result, it is possible to reliably prevent the generation of odor from the liquid and the inconvenience of exposing the liquid that is externally attached. In addition, it is possible to prevent inconveniences such as a reduction in workability at the time of production due to complete adhesion of a separate sealing material and an increase in cost. Further, the container body 2
Can be improved by simple cleaning such as wiping, so that water does not easily enter the bottom member 4 during cleaning.

FIGS. 3A and 3B show a liquid container 1 according to a second embodiment. The liquid container 1 includes a container body 2 and a lid 1
The second embodiment differs from the first embodiment only in that the mounting structure with the screw 7 is a forced fitting structure instead of the screwing structure.

Specifically, a convex portion 2b that projects annularly is provided above the shoulder portion 3 of the container body 2.
The lid 17 of the second embodiment has a bottomed cylindrical shape, and has no groove formed in the inner peripheral portion thereof to be fitted with the convex portion 2b.

In the liquid container 1 of the second embodiment, the lid 17 also serving as a cup is fitted onto the container main body 2 and pushed in, and as shown in FIG. Only a part of the lid 17 opposed to 2b is extended and elastically adhered, so that the attached state can be maintained. And this attachment part functions as a seal part.

Therefore, the liquid container 1 of the first embodiment is
Similarly to the above, when the lid 17 is attached, the liquid remaining in the space does not leak to the outside. Further, since the entire lid 17 can be washed, the liquid adhering to the mounting structure can be sufficiently washed.
In addition, since the lid 17 is not provided with a groove in which the convex portion 2b is fitted, the mold structure is simplified, and as a result, productivity can be improved, and the cleaning operation can be improved. There is an advantage that the performance is also improved. In the second embodiment, as in the first embodiment, the opening of the lid 17 may be brought into contact with the shoulder 3 of the container body 2 to form a double sealing structure.

FIGS. 4A and 4B show a liquid container 1 according to a third embodiment. The liquid container 1 includes the first and second liquid containers.
In the present embodiment, the entirety of the lids 15 and 17 is formed of a sealing material.
This embodiment is different from the first embodiment in that a seal member 21 made of the same material as that of the first and second embodiments is provided.

Specifically, the lid 19 of the third embodiment is
A main body 20 made of a well-known resin is provided, and a sealing material 21 is integrally formed in an opening of the main body 20 by two-color molding. As shown in FIG. 4B, the main body 20 and the sealing member 21 have hook-shaped engaging portions 20a,
21a is formed to ensure the strength of the joint portion and to prevent penetration when liquid adheres to the joint portion. Needless to say, the engaging portions 20a and 21a may be joined by other means such as forced fitting.

In the liquid container 1 according to the third embodiment, when the lid 19 serving also as a cup is screwed and attached to the container body 2, as in the first embodiment, the lid 19 is positioned at the opening of the lid 19. The sealing material 21 to be brought into contact with the shoulder portion 3 of the container body 2, and the contact portion serves as a sealing portion. As a result, it is possible to reliably prevent the liquid from leaking out of the space formed with the lid 19 attached. The sealing member 21 is formed by two-color molding.
Since it is integrally formed with the cover 19, it is possible to reliably prevent the liquid adhering to these joints from entering, and to form the cover 19
, It can be easily washed and removed. In addition, in the third embodiment, the number of materials for forming the relatively expensive sealing material 21 is reduced, so that the cost can be reduced.

In the third embodiment, the mounting structure of the lid 19 and the shoulder 3 of the container body 2 is different from the screw portion 2a provided on the container body 2 and the screw structure provided on the main body 20 of the cover body 19. Although it has a screwed structure composed of the portion 20b, a forced fitting structure by uneven fitting may be used.

FIGS. 5A and 5B show a liquid container 1 according to a fourth embodiment. The liquid container 1 is different from the third embodiment in that a sealing material 24 is provided only on the inner peripheral portion of the opening of the lid 22.

Specifically, as in the second embodiment, a convex portion 2b projecting annularly from the outer peripheral portion is provided above the shoulder portion 3 in the container body 2.

The lid 22 is provided with a sealing material 24 by two-color molding at the inner peripheral portion of the opening of the resin main body 23. The sealing material 24 is provided at a position facing the convex portion 2b. A fitting groove 24a is provided in the portion 2b so as to fit the concave and convex. Note that the sealing member 24 may have a configuration in which the fitting groove 24a is not provided as in the second embodiment. The mounting structure between the container body 2 and the lid 22 is as follows.
Similar to the first and third embodiments, a screwed structure with a screw portion may be used.

In the liquid container 1 of the fourth embodiment, as in the above-described embodiments, simply by attaching the lid 22 to the container body 2, the sealing member 24 is pressed against the convex portion 2 b of the container body 2. Can be attached. These contact portions serve as seal portions. As a result, it is possible to reliably prevent the liquid from leaking out of the space formed with the lid 22 attached, and to wash the lid 22 completely since the sealing member 24 is attached to the lid 22. By doing so, the adhered liquid can be reliably washed.

FIGS. 6A and 6B show a liquid container 1 according to a fifth embodiment. In the liquid container 1, the sealing member 24 is formed only on the inner peripheral portion of the opening of the lid 22 in the fourth embodiment, whereas the resin-made main body 26 of the lid 25 is formed.
Is different from the fourth embodiment in that a sealing material 27 is provided on the entire inner peripheral portion of the fourth embodiment. In the fifth embodiment, the same operation and effect as those of the fourth embodiment can be obtained.

FIGS. 7A and 7B show a liquid container 1 according to a sixth embodiment. The liquid container 1 is different from the third to fifth embodiments in that a sealing material 30 is provided on the inner periphery of an intermediate portion of a main body 29 of a lid 28 so as to protrude inward. Above the shoulder 3 of the container body 2, a locking step 2c extending substantially horizontally is provided.

In the sixth embodiment, when the lid 28 is attached to the container body 2, the sealing material 30 is
, And the contact portion functions as a seal portion. Thereby, similarly to the above embodiments, the container body 2 and the lid 28
The liquid remaining in the space can be prevented from leaking to the outside. In addition, since the sealing material 30 is integrally formed with the main body 29 by two-color molding, the liquid does not enter between them, and the liquid can be reliably washed and removed at the time of washing.

FIGS. 8 and 9 show a liquid container 1 according to a seventh embodiment. The liquid container 1 is different from the above embodiments in that a sealing material 31 is provided on the container body 2 side.

More specifically, in the container body 2 of the seventh embodiment, a shoulder 3 is formed on the upper part, and the inner plug 5 is detachably mounted on the upper side of the shoulder 3, as in the above embodiments. It is designed to be attached. And above the shoulder 3,
An inward recess 2d is provided, and O
A seal member 31 made of a ring is provided. Further, the sealing material 31 plays a role of maintaining the attached state when the lid 32 is attached.

The lid 32 according to the seventh embodiment is made of the same resin as that of the related art, and a sealing member 31 is press-fitted at a position facing the sealing member 31 at an opening thereof. A groove 32a is provided.

In the seventh embodiment, when the lid 32 is attached to the container body 2, the fitting groove 32 of the lid 32 is formed in a portion of the sealing material 31 protruding from the outer periphery of the container body 2.
a is fitted, and the fitted portion functions as a seal portion. Therefore, similarly to the above embodiments, the container body 2 and the lid 32
The liquid remaining in the space can be reliably prevented from leaking to the outside.

Further, since the seal member 31 is provided above the container body 2 at a position above the position facing the opening of the lid 32, the seal member 31 is located in a portion which is easy to clean. As a result, even if the liquid adheres, it can be easily removed by washing as compared with the conventional liquid container.

The liquid container 1 of the seventh embodiment is
In the lid 32, a contact portion with the sealing material 31 made of an O-ring may be a flat surface. Further, as the sealing material 31, a known material having an arbitrary cross-sectional shape may be used instead of the O-ring.

FIGS. 10A and 10B show a liquid container 1 according to an eighth embodiment. In the liquid container 1, a sealing member 33 made of an O-ring is provided above the mounting structure (the threaded portion 2a) in the container body 2, and the lid 34 is mounted so that a seal is provided at a substantially intermediate portion thereof. Have been. In addition, the lid 34 is formed with a step 34a protruding inward.

In the eighth embodiment, when the lid 34 is attached, the step portion 34a comes into contact with the sealing member 33 disposed on the container body 2 from above, and the contact portion serves as a sealing portion. . Therefore, the space between the container body 2 and the lid body 34 is airtightly sealed, and the liquid remaining and adhered inside can be reliably prevented from leaking to the outside.

In the seventh and eighth embodiments,
O-rings are provided on the shoulders 3 to form the sealing materials 31 and 33. However, when the shoulders 3 are formed as a resin molded product separate from the container body 2, a material such as rubber or elastomer may be used. The sealing materials 31, 33 may be integrally formed by performing two-color molding with the shape.

[0046]

As is clear from the above description, in the liquid container of the present invention, since the sealing material is provided on at least a part of the lid that also serves as the cup, the container body and the lid are provided as in the conventional case. In addition to reliably preventing the liquid remaining in the space from leaking to the outside, even if the liquid in the space adheres to the sealing material, the lid can be washed completely,
It can be almost completely removed by washing. Therefore, it is possible to prevent inconvenience such as generation of an odor and coloring of the remaining liquid due to leaving the attached liquid as it is, thereby deteriorating the appearance.

Then, the entire lid is formed of a sealing material, or a sealing material is provided at an opening of the lid,
Alternatively, a sealing material is provided on the entire inner peripheral portion of the lid, or the sealing material is provided on the entire inner peripheral portion of the lid, or the sealing material is provided above the opening of the lid, particularly, In the case where the sealing member is composed of a resin body and a sealing material, the two members are integrally formed by two-color molding, so that there is no need to completely adhere a separate sealing material, thereby increasing workability and cost during production. Can be reliably prevented.

Further, even in the case where the sealing material is provided above the position of the container body opposite to the opening of the lid, the liquid adhering and remaining between the container body and the lid may be formed as described above. Can be reliably prevented from leaking to the outside, and the attached liquid can be easily removed by washing as compared with a conventional liquid container.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a liquid container according to a first embodiment of the present invention.

FIG. 2 is a partial cross-sectional view illustrating an attached state of a lid according to the first embodiment.

3A and 3B show a liquid container according to a second embodiment, in which FIG. 3A is a partial cross-sectional view showing a state before a lid is attached, and FIG. 3B is a partial cross-sectional view showing a state after the lid is attached.

FIG. 4A is a partial cross-sectional view illustrating a liquid container according to a third embodiment, and FIG. 4B is an enlarged view of a main part of FIG.

5A and 5B show a liquid container according to a fourth embodiment, in which FIG. 5A is a partial cross-sectional view showing a state before a lid is attached, and FIG. 5B is a partial cross-sectional view showing a state after the lid is attached.

6A and 6B show a liquid container according to a fifth embodiment, in which FIG. 6A is a partial sectional view showing a state before a lid is attached, and FIG. 6B is a partial sectional view showing a state after the lid is attached.

FIGS. 7A and 7B show a liquid container according to a sixth embodiment, in which FIG. 7A is a partial sectional view showing a state before a lid is attached, and FIG. 7B is a partial sectional view showing a state after the lid is attached.

FIG. 8 is a sectional view showing a liquid container according to a seventh embodiment of the present invention.

FIG. 9 is a partial cross-sectional view illustrating an attached state of a lid according to a seventh embodiment.

10A and 10B show a liquid container according to an eighth embodiment, wherein FIG. 10A is a partial cross-sectional view showing a state before the lid is attached, and FIG. 10B is a partial cross-sectional view showing a state after the lid is attached.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Liquid container, 2 ... Container main body, 3 ... Shoulder part, 2a ... Screw part, 5 ... Inner plug, 9 ... Outflow passage, 15 ... Lid, 15a ... Screw part.

Claims (10)

[Claims] 1. A liquid container in which a lid serving also as a cup is detachably attached to an upper part of a container main body, and at least a part of the lid comes into contact with an outer peripheral portion of the container main body to form a space with the container main body. A liquid container provided with a sealing member for preventing liquid remaining in the liquid container from leaking outside. 2. The liquid container according to claim 1, wherein the entire lid is formed of a sealing material, and a contact portion between the lid and the container body is a seal. 3. The liquid container according to claim 1, wherein the sealing material is provided at an opening of the lid, and a contact portion between the sealing material and the container body is a sealing portion. 4. The liquid container according to claim 1, wherein the sealing material is provided on an inner peripheral portion of the opening of the lid, and a contact portion between the sealing material and the container body is a sealing portion. . 5. The liquid container according to claim 1, wherein the sealing material is provided on the entire inner peripheral portion of the lid, and a contact portion between the sealing material and the container body is a sealing portion. . 6. The liquid container according to claim 1, wherein the sealing material is provided above an opening of the lid, and a contact portion between the sealing material and the container body is a sealing portion. . 7. The liquid container according to claim 1, wherein a water-repellent treatment is applied to a surface of the sealing material. 8. A liquid container in which a lid serving also as a cup is detachably attached to an upper portion of a container main body, and an inner peripheral portion of the lid is provided above a position in the container main body opposite to an opening of the lid. A liquid material provided with a seal member for preventing liquid remaining in the space between the cover and the lid body from leaking to the outside. 9. The fitting according to claim 8, wherein a fitting groove is provided at a position on the lid body facing the sealing material, and a fitting portion between the fitting groove and the sealing material is a sealing portion. Liquid container. 10. The liquid container according to claim 8, wherein a step portion is provided at a position of the lid body facing the seal material, and a contact portion between the step portion and the seal material is a seal portion. .