CN111169795B - Beverage container and lid assembly - Google Patents

Abstract

The present invention provides a beverage container and lid assembly. A beverage container (1) includes a cylindrical container body (2) open at one end and closed at the other end, and a spout adapter (3) attached to at least partially close the opening and forming a spout. The spout adapter (3) has an adapter body (4) attached to the container body (2) and an elastic member (5) held by the adapter body (4). In addition, the elastic member (5) includes a first surface (11) which is in contact with the adapter body (4) to form a sealing portion, and an end surface (2a) provided opposite to the first surface (11) and facing the container body (2). The second surface (12) that contacts to form the sealing portion is provided with a ring that is pressed against the adaptor body (4) in the state where the adaptor body (4) is attached to the container body (2) on the first surface (11). shaped convex portion (8).

Description

Beverage container and lid assembly

technical field

The present invention relates to beverage containers and lid assemblies for beverage containers.

Background technique

Generally, a beverage container for infants and young children has a container body that accommodates a beverage and a spout adapter that forms a spout. The spout adapter is detachably attached to the container body.

In the beverage container as described above, when the spout adaptor is attached to the container body, in order to prevent the beverage from leaking from between the spout adaptor and the container body, the spout adaptor and the container body need to be brought into close contact with each other. form a seal between them. This requires a lot of force and can impair the usability of the beverage container. In addition, even if the spout adapter and the container body are firmly crimped to each other, there are individual differences in the spout adapter due to manufacturing errors and the like, so it is difficult to stably form a seal between the spout adapter and the container body.

SUMMARY OF THE INVENTION

technical problem

The present invention has been made in consideration of the above circumstances, and its object is to form a sufficiently stable seal regardless of individual differences in the spout adapter, and to reduce the force required to attach the spout adapter to the container body, thereby improving the The operability of beverage containers.

The beverage container of the present invention has:

a cylindrical container body with one end open and the other end closed; and

A drinking spout adapter, which is installed so as to at least partially close the above-mentioned opening and forms a drinking spout,

The spout adapter has an adapter body attached to the container body and an elastic member held by the adapter body,

The elastic member includes a first surface that is in contact with the adapter body to form a sealing portion, and a second surface that is provided opposite to the first surface and is in contact with an end surface of the container body (an annular shape of the cylindrical portion) to form a sealing portion. and an annular convex portion is provided on the first surface, and the annular convex portion is pressed against the adaptor main body in a state where the adaptor main body is attached to the container main body.

In the beverage container of the present invention,

The adapter body may have a cylindrical peripheral wall portion and a top wall portion connected over the entire length of the peripheral wall portion,

The said annular convex part is arrange|positioned along the connection part of the said top wall part and the said peripheral wall part.

In the beverage container of the present invention,

The end surface of the container body may have an inclined surface inclined downward toward the outside with respect to the opening surface defined by the container body.

In the beverage container of the present invention,

The said annular convex part may be located in the outer side of the upper side edge of the said inclined surface of the said container main body.

In the beverage container of the present invention,

The adapter body may have a cylindrical peripheral wall portion and a top wall portion connected over the entire length of the peripheral wall portion,

The elastic member includes a plate-like portion extending along the top wall portion, and the annular convex portion is integrally formed with the plate-like portion and protrudes from the plate-like portion.

In the beverage container of the present invention,

A hole may be formed in the top wall portion of the adapter body,

The elastic member has a mouthpiece portion formed integrally with the plate-like portion to form the mouthpiece,

The mouthpiece portion passes through the hole provided in the top wall portion of the adaptor body.

The beverage container of the present invention may further include an openable and closable lid that covers the mouthpiece in a closed state.

The lid assembly of the present invention is attached to a container body, and the lid assembly includes a spout adapter that is attached so as to at least partially close the opening of the container body and has a spout formed thereon,

The spout adapter has an adapter body attached to the container body and an elastic member held by the adapter body,

The elastic member includes a first surface that is in contact with the adapter body to form a sealing portion, and a second surface that is provided opposite to the first surface and is in contact with an end surface of the container body to form a sealing portion, and the first surface is provided with The annular convex portion is pressed against the adaptor body in a state where the adaptor body is attached to the container body.

According to the present invention, a sufficiently stable seal can be formed regardless of individual differences in the spout adaptor, and the operability of the beverage container can be improved by reducing the force required to attach the spout adaptor to the container body.

Description of drawings

1 : is a figure for demonstrating one Embodiment of this invention, and is a side view which shows a beverage container.

Fig. 2 is a plan view of the beverage container of Fig. 1 viewed from above.

Fig. 3 is an exploded perspective view showing the beverage container of Fig. 1 .

FIG. 4 is a partial cross-sectional view along line I-I of the beverage container of FIG. 2 .

Detailed ways

Hereinafter, one embodiment of the present invention will be described with reference to the accompanying drawings.

1-4 is a figure for demonstrating one Embodiment of the beverage container of this invention. 1 and 2 are a side view and a plan view showing the overall configuration of the beverage container, respectively. 3 is an exploded perspective view showing the beverage container of FIG. 1 , and FIG. 4 is a partial cross-sectional view taken along the line I-I of the beverage container of FIG. 2 . In addition, in FIG. 3, the illustration of the straw mentioned later is abbreviate|omitted for illustration clarity.

The beverage container 1 shown in FIGS. 1 to 4 is a container for a user (mainly infants) to drink beverages such as tea and fruit juice through the mouth. The beverage container 1 includes a container body 2 and a spout adapter 3 that forms the spout and is detachably attached to the container body 2 . The spout adapter 3 is attached with a lid 6 that covers the spout in a closed state. The lid assembly is constituted by the spout adapter 3 and the lid 6 .

The container main body 2 accommodates beverages inside. As shown in FIG. 3 , the container body 2 is formed in a cylindrical shape with one end (upper end) open and the other end (lower end) closed. On the outer periphery of the upper end portion of the container body 2, a male thread 2s for attaching the spout adapter 3 is formed.

The spout adapter 3 has an adapter body 4 attached to the container body 2 and an elastic member 5 held by the adapter body 4 . As will be described later, the elastic member 5 includes the mouthpiece 20 where the user of the beverage container 1 puts his mouth.

As shown in FIG. 3 , one end (upper end) of the adapter body 4 is formed in a partially closed cylindrical shape. Specifically, the adapter main body 4 has a cylindrical peripheral wall portion 4a and a top wall portion 4b connected over the entire length of the upper edge of the peripheral wall portion 4a. As shown in FIGS. 1 and 4 , a female screw 4s is formed on the inner periphery of the lower end portion of the peripheral wall portion 4a. The inner thread 4s is engaged with the outer thread 2s of the container body 2 . The adapter main body 4 can be attached to the container main body 2 by engaging the female thread 4s with the male thread 2s. As shown in FIG. 3, the top wall part 4b is formed with the attachment hole 4h in which the elastic member 5 is attached. Moreover, the protrusion part 4c which protrudes from the top wall part 4b to the opposite side to the container main body 2 is provided in the top wall part 4b. As shown in FIGS. 1 and 4 , on the side of the protruding portion 4c, an engaging recessed portion 4d that engages with an engaging convex portion 6d of the cover 6 described later and holds the cover 6 in a closed state is formed.

As shown in FIGS. 1 , 3 and 4 , the elastic member 5 has a plate-like portion 10 , a mouthpiece portion 20 forming a mouthpiece, and a straw accommodating portion 30 to which the straws 7 are connected. The plate-like portion 10 , the mouthpiece portion 20 and the straw accommodating portion 30 are integrally formed. The elastic member 5 is made of a soft material such as silicon in order to accommodate the mouthpiece 20 for infants.

As shown in FIG. 3 , the plate-like portion 10 has a flat plate shape as a whole. As shown in FIG. 4 , the plate-like portion 10 is arranged between the top wall portion 4 b of the adapter body 4 and the annular upper end surface 2 a that defines the opening of the container body 2 . The plate-like portion 10 extends along the top wall portion 4 b of the adapter body 4 , and forms a seal between the top wall portion 4 b and the upper end surface 2 a of the container body 2 . More specifically, the plate-like portion 10 includes a first surface 11 that is in contact with the adapter body 4 to form a sealing portion, and a first surface 11 that is provided opposite to the first surface 11 and is provided in contact with the upper end surface 2a of the container body 2 to form a sealing portion. 2 sides 12. As can be understood from FIGS. 2 and 4 , when viewed from the direction (up and down direction) from the top wall portion 4b of the adapter main body 4 toward the plate-like portion 10 , in the plate-like portion 10 , the mounting hole 4h serving as the top wall portion 4b is in the plate-like portion 10 . The opening 14 for the mouthpiece and the vent hole 15 which communicate with the container body 2 are provided at the position of the container body 2 . The vent hole 15 is provided with a valve plate portion 16 that closes the vent hole 15 .

As shown in FIG. 3 , the mouthpiece portion 20 extends from the first surface 11 of the plate-shaped portion 10 . The mouthpiece 20 has a cylindrical shape as a whole. As shown in FIG. 4 , the internal space of the spout portion 20 communicates with the internal space of the container body 2 through the opening 14 for spout of the plate-shaped portion 10 . The mouthpiece portion 20 penetrates the attachment hole 4h of the adapter body 4 .

As shown in FIGS. 2 and 3 , a mounting portion 40 for mounting the elastic member 5 to the adapter main body 4 is formed around the mouthpiece portion 20 and the vent hole 15 . As shown in FIG. 4 , the attachment portion 40 protrudes from the first surface 11 of the plate-shaped portion 10 and penetrates through the attachment hole 4 h of the adapter body 4 . The upper end portion of the attachment portion 40 is formed with an extension portion 41 extending outside the attachment hole 4h when viewed from the direction (up-down direction) from the top wall portion 4b of the adapter body 4 toward the plate-shaped portion 10 . By arranging the extension portion 41 on the opposite side to the side of the plate-like portion 10 of the top wall portion 4b of the adapter main body 4, in other words, by disposing the edge portion of the mounting hole 4h that defines the top wall portion 4b on the plate-like portion The elastic member 5 is held by the adapter main body 4 between the portion 10 and the extending protrusion 41 .

As shown in FIGS. 1 and 4 , the straw accommodating portion 30 protrudes into the container body 2 from the second surface 12 of the plate-shaped portion 10 . The straw accommodating portion 30 has a cylindrical shape, and is erected around the mouth opening 14 of the plate-shaped portion 10 . One end of the straw 7 is connected to the straw accommodating portion 30 .

In addition, as mentioned above, by integrally forming each part 10, 20, 30 which has a different function, the number of parts of the beverage container 1 can be reduced, and the workability|operativity at the time of cleaning can be improved. In addition, assembly of the parts 10 , 20 , and 30 to the adapter body 4 can be easily performed.

Next, the cover 6 will be described. As shown in FIGS. 1 to 3 , the lid 6 has a dome shape, and covers the mouthpiece 20 in a closed state. By covering the mouthpiece 20 with the cover 6, the mouthpiece 20 can be kept hygienic. The cover 6 is pivotably connected to the adapter body 4 of the spout adapter 3 centered on the pivot axis Ax. Then, the lid 6 is opened and closed by relative movement with respect to the spout adapter 3 .

The lid 6 has an inner side surface 6a facing the mouthpiece portion 20 in a closed state. The inner side surface 6a is provided with an engagement convex portion 6d that engages with the engagement recessed portion 4d of the adapter main body 4 when the lid 6 is closed. The lid 6 is maintained in a closed state by engaging the engaging convex portion 6d with the engaging concave portion 4d.

Moreover, the cover 6 has the closing convex part 6b which protrudes from the inner surface 6a, and bends the mouthpiece part 20 in the state which closed the cover 6, and is pressed and closed. By closing the mouthpiece portion 20 , the leakage of the beverage from the mouthpiece portion 20 is prevented.

The cover 6 has an opening convex portion 6c that protrudes from the inner side surface 6a of the cover 6 and is inserted into the vent hole 15 of the elastic member 5 in the closed state of the cover 6 so as to cover the valve piece portion of the vent hole 15 16 open. By opening the valve plate portion 16 of the vent hole 15 , the internal pressure of the container body 2 is prevented from rising and the beverage is prevented from leaking from the mouthpiece portion 20 .

However, in a beverage container having a container body and a spout adaptor detachably attached to the container body, when the spout adaptor is attached to the container body, in order to prevent beverage from passing from the spout adaptor to the container body If there is leakage between the two, the spout adapter needs to be brought into close contact with the container body to form a seal between the two. This requires a lot of force and can impair the handling of the beverage container. In addition, even if the spout adapter and the container body are firmly crimped to each other, there are individual differences in the spout adapter due to manufacturing errors and the like, so it is difficult to stably form a seal between the spout adapter and the container body.

Taking this situation into consideration, the beverage container 1 of the present embodiment has studied to form a sufficiently stable seal without depending on individual differences in the spout adapter 3 (ie, even if there are individual differences in the spout adaptor 3), and to reduce the spout The force required to attach the adaptor 3 to the container body 2 improves the operability of the beverage container 1 .

Specifically, as shown in FIG. 3 , the annular convex portion 8 is provided on the first surface 11 of the plate-like portion 10 along the peripheral portion thereof. The annular convex portion 8 is pressed against the adapter main body 4 (more specifically, the top wall portion 4 b ) in a state where the adapter main body 4 is attached to the container main body 2 .

In the beverage container 1 using the elastic member 5 in which the annular convex portion 8 is formed on the first surface 11 of the plate-like portion 10, compared with the beverage container using the elastic member without the annular convex portion 8, the The force for attaching the spout adapter 3 to the container body 2 is reduced. This is because, when the spout adapter 3 is attached to the container body 2, the plate-like portion 10 of the elastic member 5 is compressed between the top wall portion 4b of the adapter body 4 and the upper end surface 2a of the container body 2. A seal is formed between the elastic member 5 and the upper end surface 2 a of the container body 2 . However, when the annular convex portion 8 is formed on the first surface 11 of the plate-shaped portion 10 , it is the same as the case where the annular convex portion 8 is not provided. By contrast, the volume of the elastic member 5 compressed between the top wall portion 4b of the adapter body 4 and the upper end surface 2a of the container body 2 can be reduced.

In addition, by forming the annular convex portion 8 on the first surface 11 of the plate-like portion 10, the annular convex portion 8 of the elastic member 5 is positively brought into close contact with the joint when the spout adapter 3 is attached to the container body 2. The top wall portion 4b of the adapter main body 4 (that is, the annular convex portion 8 is brought into close contact with the top wall portion 4b earlier than the other parts of the plate-like portion 10 ), so that it is possible to reduce the number of parts of the adapter main body 4 and the elastic member 5 caused by differences in the close contact between the two. Therefore, it is possible to form a seal between the adaptor main body 4 and the elastic member 5 sufficiently stably without depending on the individual differences of the spout adaptor 3 (without being influenced by the individual differences of the spout adaptor 3 ).

In the illustrated example, as can be understood from FIG. 4 , the annular convex portion 8 is arranged along the corner portion of the connecting portion 4e that is the peripheral wall portion 4a of the adapter body 4 and the top wall portion 4b. Thereby, the arrangement of the annular convex portion 8 can be stabilized, and a stable seal can be formed.

In addition, in the illustrated example, as can be understood from FIG. 4 , at least a part of the annular convex portion 8 is located on the annular upper end surface 2 a of the container body 2 . In addition, the width 8w of the annular convex portion 8 is smaller than the width 2w of the upper end surface 2a of the container body 2 when viewed from the top wall portion 4b of the adapter body 4 toward the plate-like portion 10 (vertical direction). As a result, when the spout adapter 3 is attached to the container body 2, compared with the case where the annular convex portion 8 is not provided, the upper end surface of the top wall portion 4b of the adapter body 4 and the container body 2 can be effectively lowered. The volume of the compressed elastic member 5 between 2a. In addition, when the spout adaptor 3 is attached to the container body 2, the annular convex portion 8 can be effectively brought into close contact with the top wall portion 4b of the adaptor body 4 (that is, the annular convex portion 8 is made to be in close contact with the top wall portion 4b of the adaptor body 4 (that is, the annular convex portion 8 is made smaller than the plate). The other parts of the shaped portion 10 are in close contact with the top wall portion 4b earlier).

In addition, in the example shown in figure, the annular convex part 8 is formed integrally with the plate-shaped part 10, and protrudes from the 1st surface 11 of the plate-shaped part 10. By supporting the annular convex portion 8 by the plate-like portion 10 in this way, twisting of the annular convex portion 8 and the like can be prevented, and the arrangement of the annular convex portion 8 can be stabilized. Therefore, a stable seal can be formed between the annular convex portion 8 and the adapter body.

In addition, the annular upper end surface 2a of the container body 2 has an annular first upper end surface 2b facing the top wall portion 4b of the adapter body 4, and is connected to the annular first upper end surface 2b from the outside or inside of the annular first upper end surface 2b. And the annular 2nd upper end surface 2c inclined with respect to the top wall part 4b. When the spout adapter 3 is attached to the container body 2, the annular first upper end surface 2b of the upper end surface 2a of the container body 2 is placed in contact with the plate-shaped portion of the elastic member 5 before the annular second upper end surface 2c. 10 contacts, and the plate-shaped portion 10 is compressed to form a seal between the adapter body 4 and the elastic member 5 . Thereby, the force for attaching the spout adapter 3 to the container body 2 can also be reduced. This is because the difference between the top wall portion 4b of the adapter body 4 and the upper end surface 2a of the container body 2 can be reduced compared to the case where the entire annular upper end surface 2a of the container body 2 faces the ceiling wall portion 4b. The volume of the elastic member 5 that is compressed between.

In the example shown in the figure, the second upper end surface 2c is connected to the first upper end surface 2b from the outside, and faces the annular upper end surface 2a with respect to the opening surface (surface surrounded by the annular end surface) defined by the container body 2 . The outer side of the container body 2 is inclined to the lower side in the vertical direction of the container body 2 . Thereby, the annular convex part 8 can be pressed toward the corner part which is the connection part 4e of the top wall part 4b and the peripheral wall part 4a. Thereby, the arrangement of the annular convex portion 8 can also be stabilized, and a stable seal can be formed between the annular convex portion 8 and the adapter body 4 .

Moreover, as shown in FIG. 4, the annular convex part 8 is located in the outer side of the 1st upper end surface 2b (namely, the outer side of the upper side edge 2d of the 2nd upper end surface 2c). Thereby, the annular convex part 8 can be pressed toward the corner part which is the connection part 4e of the top wall part 4b and the peripheral wall part 4a more effectively. Therefore, the arrangement of the annular convex portion 8 can be effectively stabilized, and a more stable seal can be formed between the annular convex portion 8 and the adapter body 4 .

According to the above-described one embodiment, the beverage container 1 includes the cylindrical container body 2 having one end open and the other end closed, and the spout adapter 3 which is attached so as to at least partially close the opening and forms a spout. The spout adapter 3 has an adapter body 4 attached to the container body 2 and an elastic member 5 held by the adapter body 4 . The elastic member 5 includes a first surface 11 that is in contact with the adapter body 4 to form a sealing portion, and a second surface 12 that is provided opposite to the first surface 11 and forms a sealing portion in contact with the end surface of the container body 2 . In addition, the first surface 11 is provided with an annular convex portion 8 that is pressed against the adapter main body 4 in a state where the adapter main body 4 is attached to the container main body 2 .

According to such a beverage container 1, the volume of the elastic member 5 that is crushed when the spout adaptor 3 is attached to the container body 2 can be reduced, and the force for attaching the spout adaptor 3 to the container body 2 can be reduced. . In addition, when the spout adaptor 3 is attached to the container body 2, the annular convex portion 8 of the elastic member 5 is actively brought into close contact with the adaptor body 4, so that it is possible to reduce the size of the adaptor body 4 and the elastic member 5. Differences may lead to differences in the close contact between the two. Therefore, it is possible to form a seal between the adaptor main body 4 and the elastic member 5 with sufficient stability without depending on the individual differences of the spout adaptor 3 . As described above, according to the beverage container 1 described above, the seal can be formed stably enough regardless of individual differences of the spout adaptor 3, and the force required to attach the spout adaptor 3 to the container body 2 can be reduced, so that beverages can be improved. The operability of the container 1.

In the above-mentioned one specific example, the adapter main body 4 has the cylindrical peripheral wall part 4a and the top wall part 4b connected over the whole length of the peripheral wall part 4a. And the annular convex part 8 is arrange|positioned along the connection part 4e of the top wall part 4b and the peripheral wall part 4a. Thereby, the annular convex part 8 is arrange|positioned along the corner part which is the connection part 4e of the top wall part 4b and the peripheral wall part 4a, and the arrangement|positioning of the annular convex part 8 can be stabilized. As a result, a stable seal can be formed between the annular convex portion 8 and the adapter body 4 .

In the above-mentioned one specific example, the end surface 2a of the container body 2 has an opening surface defined by the container body 2 and an inclined surface (second upper end surface) 2c inclined downward toward the outside. Thereby, the annular convex part 8 can be pressed toward the corner part which is the connection part 4e of the top wall part 4b and the peripheral wall part 4a, and the arrangement|positioning of the annular convex part 8 can be stabilized effectively. As a result, a stable seal can be effectively formed between the annular convex portion 8 and the adapter body 4 .

In the above-mentioned one specific example, the annular convex part 8 is located outside the upper side edge 2d of the said inclined surface (2nd upper end surface) 2c. Thereby, the annular convex part 8 can be pressed toward the corner part which is the connection part 4e of the top wall part 4b and the peripheral wall part 4a, and the arrangement|positioning of the annular convex part 8 can be stabilized effectively. Furthermore, a stable seal can be effectively formed between the annular convex portion 8 and the adapter body 4 .

In the above-mentioned one specific example, the adapter main body 4 has the cylindrical peripheral wall part 4a and the top wall part 4b connected over the whole length of the peripheral wall part 4a. Further, the elastic member 5 includes a plate-like portion 10 extending along the top wall portion 4 b , and the annular convex portion 8 is integrally formed with the plate-like portion 10 and protrudes from the plate-like portion 10 . Since the annular convex portion 8 is supported by the plate-like portion 10 , twisting and the like of the annular convex portion 8 can be prevented, and the arrangement of the annular convex portion 8 can be stabilized. Thereby, a stable seal can be formed between the annular convex portion 8 and the adapter body 4 .

In the above-mentioned one specific example, the hole (mounting hole) 4h is formed in the top wall portion 4b of the adapter main body 4 . In addition, the elastic member 5 has a mouthpiece portion 20 that is integrally formed with the plate-like portion 10 to form a mouthpiece. Furthermore, the mouthpiece portion 20 is inserted through the hole 4h provided in the top wall portion 4b of the adapter main body 4 . By integrally forming the respective parts 10 and 20 having different functions in this way, the number of parts of the beverage container 1 can be reduced and the operability at the time of cleaning and the like can be improved. In addition, assembly of the parts 10 and 20 to the adapter main body 4 can be easily performed.

In one specific example described above, the beverage container 1 further includes an openable and closable lid 6 that covers the mouthpiece in a closed state. By covering the mouthpiece 20 with the cover 6, the mouthpiece 20 can be kept hygienic.

Alternatively, according to the above-described one embodiment, the cap assembly is a cap assembly attached to the container body 2, and includes the spout adapter 3 which is attached so as to at least partially close the opening of the container body 2 and is formed Have a drink. The spout adapter 3 has an adapter body 4 attached to the container body 2 and an elastic member 5 held by the adapter body 4 . The elastic member 5 includes a first surface 11 which is in contact with the adapter body 4 to form a sealing portion, and a second surface 12 which is provided opposite to the first surface 11 and is in contact with the end surface 2a of the container body 2 to form a sealing portion. The surface 11 is provided with an annular convex portion 8 that is pressed against the adaptor body 4 in a state where the adaptor body 4 is attached to the container body 2 .

According to such a cap assembly, the volume of the elastic member 5 that is crushed when the spout adaptor 3 is attached to the container body 2 can be reduced, and the force for attaching the spout adaptor 3 to the container body 2 can be reduced. In addition, when the spout adaptor 3 is attached to the container body 2, the annular convex portion 8 of the elastic member 5 can be brought into close contact with the adaptor body 4 positively, so that the damage caused by the adaptor body 4 and the elastic member 5 can be reduced. Individual differences may lead to differences in the close contact between the two. Therefore, it is possible to form a seal between the adaptor main body 4 and the elastic member 5 with sufficient stability without depending on the individual differences of the spout adaptor 3 . As described above, according to the above-described cap assembly, it is possible to form a seal with sufficient stability regardless of individual differences in the spout adaptor 3, and it is possible to reduce the force required to attach the spout adaptor 3 to the container body 2, thereby improving the beverage container 1. operability.

Although one embodiment has been described with reference to a plurality of specific examples, these specific examples are not intended to limit one embodiment. The above-described one embodiment can be implemented in other various specific examples, and various omissions, substitutions, and changes can be made without departing from the gist thereof. For example, the shape of the mouthpiece part 20 is not limited to the shape shown in the figure, and various forms can be adopted. In addition, the annular convex portion 8 may be separate from the plate-like portion 10 .

Claims (7)

1. A beverage container is characterized by comprising:

a cylindrical container body having one end opened and the other end closed; and

a spout adaptor mounted in such a way as to at least partially close the opening and forming a spout,

the mouthpiece adaptor has an adaptor body attached to the container body and an elastic member held by the adaptor body,

the adapter body has a cylindrical peripheral wall portion and a top wall portion connected over the entire length of the peripheral wall portion,

the elastic member includes a plate-like portion expanded along the top wall portion,

the plate-like portion includes a 1 st surface that is provided to be in contact with an adapter body to form a seal portion, and a 2 nd surface that is provided to face the 1 st surface and is provided to be in contact with an upper end surface of the container body to form a seal portion, an annular convex portion is provided on the 1 st surface, and the annular convex portion is pressed against the adapter body in a state where the adapter body is attached to the container body,

at least a part of the annular projection is located on the upper end surface of the container body,

the annular projection has a width smaller than a width of the upper end surface of the container body when viewed in a direction from the top wall portion of the adapter body toward the plate-like portion.

2. The beverage container according to claim 1, wherein the annular protrusion is disposed along a connecting portion between the top wall portion and the peripheral wall portion.

3. The beverage container according to claim 1, wherein an upper end surface of the container body has an inclined surface inclined downward toward an outer side with respect to an opening surface defined by the container body.

4. The beverage container according to claim 3, wherein the annular projection is located outside an upper end edge of the inclined surface of the container body.

5. The beverage container according to claim 1, wherein the annular convex portion is formed integrally with the plate-like portion so as to protrude therefrom.

6. The beverage container according to claim 5, wherein a hole is formed in the top wall portion of the adapter body,

the elastic member has a spout portion formed integrally with the plate-like portion to form the spout,

the drink opening portion passes through the hole provided in the top wall portion of the adapter body.

7. The beverage container according to claim 1, further comprising an openable and closable lid that covers the spout in a closed state.

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