One-way valve and related container kit

Abstract

To provide a one-way valve adapted for containers with thin walls, and a related container kit.SOLUTION: A one-way valve 12 adapted to container 11 is provided and comprises: an upper portion 121; a lower portion 122; and a plurality of protrusions 123. The upper portion is elastically deformable. The lower portion is integrally connected to the upper portion. The plurality of protrusions project from the lower portion toward the upper portion and are separated from the upper portion. Two adjacent protrusions 123 among the plurality of protrusions are spaced apart from each other. The plurality of protrusions are configured to be abutted by an inner surface 111 of the container and to elastically deform the upper portion by an outer surface 112 of the container. Furthermore, a related container kit is provided.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] The present invention relates to one-way valves and related container kits, and more particularly to one-way valves and related container kits that fit containers having small wall thicknesses. [Background technology]

[0002] There are various vacuum containers available on the market for preserving food. Vacuum containers typically include a storage component and a one-way valve. The storage component contains the food. The one-way valve is attached to the storage component. The one-way valve can extract air from the storage component, for example, by a vacuum pump, and prevent ambient air from entering the storage component. However, conventional one-way valves require a large wall thickness on the storage component to ensure secure installation and proper functioning of the one-way valve. Therefore, improvements to conventional vacuum containers are urgently needed. Summary of the Invention

[0003] SUMMARY OF THE INVENTION It is an object of the present invention to provide a one-way valve and related container kit that is compatible with containers having small wall thicknesses in order to solve the aforementioned problems.

[0004] To achieve the above object, the present invention discloses a one-way valve adapted for a container, the one-way valve including: an elastically deformable upper portion; a lower portion integrally connected to the upper portion; and a plurality of protrusions projecting from the lower portion toward and separate from the upper portion, wherein two adjacent protrusions of the plurality of protrusions are spaced apart from each other, and the plurality of protrusions are configured to be abutted by the inner surface of the container and to cause the upper portion to be elastically deformed by the outer surface of the container.

[0005] According to an embodiment of the present invention, a recessed structure is formed in the upper portion; and when the one-way valve is removed from the container and in an undeformed state, each of the plurality of protrusions is at least partially received within the recessed structure.

[0006] According to an embodiment of the present invention, the depth of the recessed structure gradually decreases from the inside to the outside.

[0007] According to an embodiment of the present invention, the lower portion includes a stem body and a platform structure; the stem body is integrally connected to the upper portion and configured to penetrate the container when the one-way valve is attached to the container; the platform structure extends from the stem body and is separated from the upper portion, and a plurality of protrusions protrude from the platform structure.

[0008] According to an embodiment of the present invention, the plurality of protrusions are arranged in a circle having a first diameter, and the periphery of the upper portion has a second diameter, the second diameter being larger than the first diameter.

[0009] According to an embodiment of the present invention, when the one-way valve is attached to the container, the upper portion is configured to be at least partially separated from the outer surface of the container, providing a fluid passage formed by a space between two adjacent protrusions of the plurality of protrusions and the inner surface of the container, and a space between the upper portion and the outer surface of the container.

[0010] According to an embodiment of the present invention, when the one-way valve is attached to the container, the plurality of protrusions are continuously abutted by the inner surface of the container and are not separated from the inner surface of the container.

[0011] According to an embodiment of the present invention, the container further includes a channel structure and an elastic structure, wherein the channel structure penetrates the lower portion and the upper portion and has a lower opening formed in the lower portion and an upper opening formed in the upper portion, and the elastic structure extends from the upper surface of the upper portion and covers the upper opening; the thickness of the elastic structure is smaller than the thickness of the upper portion, and the elastic structure is movable between a protruding state and a non-protruding state in response to a pressure difference between the internal air pressure and the external air pressure of the container.

[0012] According to an embodiment of the present invention, the container further includes a channel structure penetrating the lower portion, the channel structure having a lower opening formed at the lower end of the lower portion and an upper opening formed at the upper end of the lower portion; the upper portion covers the upper opening, and the upper portion is movable between a protruding state and a non-protruding state in response to a pressure difference between the internal air pressure and the external air pressure of the container.

[0013] According to an embodiment of the present invention, a plurality of extension structures are formed on the top surface of the upper portion and configured to abut against the bottom portion of the additional container.

[0014] According to an embodiment of the present invention, a protruding ring is formed at the lower end of the stem body of the lower portion.

[0015] To achieve the above object, the present invention discloses a container kit including a container and a one-way valve configured to be attached to the container, the one-way valve including an elastically deformable upper portion, a lower portion integrally connected to the upper portion, and a plurality of protrusions protruding from the lower portion toward the upper portion and separated from the upper portion, two adjacent protrusions of the plurality of protrusions being spaced apart from each other, the plurality of protrusions being configured to be abutted by the inner surface of the container and to elastically deform the upper portion by the outer surface of the container.

[0016] According to an embodiment of the present invention, a recessed structure is formed in the upper portion; and when the one-way valve is removed from the container and in an undeformed state, each of the plurality of protrusions is at least partially received within the recessed structure.

[0017] According to an embodiment of the present invention, the depth of the recessed structure gradually decreases from the inside to the outside.

[0018] According to an embodiment of the present invention, the lower portion includes a stem body and a platform structure; the stem body is integrally connected to the upper portion and configured to penetrate the container when the one-way valve is attached to the container; the platform structure extends from the stem body and is separated from the upper portion, and a plurality of protrusions protrude from the platform structure.

[0019] According to an embodiment of the present invention, the plurality of protrusions are arranged in a circle having a first diameter, and the periphery of the upper portion has a second diameter, the second diameter being larger than the first diameter.

[0020] According to an embodiment of the present invention, when the one-way valve is attached to the container, the upper portion is configured to be at least partially separated from the outer surface of the container, providing a fluid passage formed by a space between two adjacent protrusions of the plurality of protrusions and the inner surface of the container, and a space between the upper portion and the outer surface of the container.

[0021] According to an embodiment of the present invention, when the one-way valve is attached to the container, the plurality of protrusions are continuously abutted by the inner surface of the container and are not separated from the inner surface of the container.

[0022] According to an embodiment of the present invention, the one-way valve further includes a channel structure and a resilient structure, wherein the channel structure penetrates the lower portion and the upper portion and has a lower opening formed in the lower portion and an upper opening formed in the upper portion, and the resilient structure extends from an upper surface of the upper portion and covers the upper opening; the thickness of the resilient structure is smaller than the thickness of the upper portion, and the resilient structure is movable between a protruding state and a non-protruding state in response to a pressure difference between the internal air pressure and the external air pressure of the container.

[0023] According to an embodiment of the present invention, the one-way valve further includes a channel structure penetrating the lower portion, the channel structure having a lower opening formed at a lower end of the lower portion and an upper opening formed at an upper end of the lower portion; the upper portion covers the upper opening, and the upper portion is movable between a protruding state and a non-protruding state in response to a pressure difference between the internal air pressure and the external air pressure of the container.

[0024] According to an embodiment of the present invention, a plurality of extension structures are formed on the top surface of the upper portion and configured to abut against the bottom portion of the additional container.

[0025] According to an embodiment of the present invention, a protruding ring is formed at the lower end of the stem body of the lower portion.

[0026] In summary, the one-way valve of the present invention utilizes a plurality of protrusions that are abutted by the inner surface of a container, allowing the upper portion to be elastically deformed by the outer surface of the container when the one-way valve is attached to the container to evacuate air inside the container and prevent ambient air outside the container from entering the container. This configuration makes the one-way valve of the present invention not only suitable for attachment to containers with large wall thicknesses, but also particularly suitable for attachment to containers with small wall thicknesses, such as mason jar covers. Therefore, the one-way valve of the present invention is versatile.

[0027] These and other objects of the present invention will no doubt become obvious to those skilled in the art after reading the following detailed description of the preferred embodiment that is illustrated in the various figures and drawings. [Brief explanation of the drawings]

[0028] [Figure 1] 1 is a diagram of a container kit according to a first embodiment of the present invention. [Figure 2] FIG. 2 is an exploded view of the container kit according to the first embodiment of the present invention. [Figure 3] 1A and 1B are views of a one-way valve according to a first embodiment of the present invention from different perspectives. [Figure 4] 1A and 1B are views of a one-way valve according to a first embodiment of the present invention from different perspectives. [Figure 5] 1 is a partial view of a one-way valve according to a first embodiment of the present invention. [Figure 6] FIG. 2 is another partial view of the one-way valve according to the first embodiment of the present invention. [Figure 7] 1 is a cross-sectional view of a one-way valve according to a first embodiment of the present invention. [Figure 8] 1 is a partial view of a container kit according to a first embodiment of the present invention, with a one-way valve attached to the container and in a first state of use. [Figure 9] 1 is a partial view of a container kit according to a first embodiment of the present invention, with a one-way valve attached to the container and in a second state of use. FIG. [Figure 10] 1 is a partial view of the container kit according to the first embodiment of the present invention, with the one-way valve attached to the container in a third state of use. FIG. [Figure 11] FIG. 6 is a partial view of a container kit according to a second embodiment of the present invention. [Figure 12] FIG. 6 is a partial exploded view of a container kit according to a second embodiment of the present invention. [Figure 13] 10A and 10B are views of a one-way valve according to a second embodiment of the present invention from different perspectives. [Figure 14] 10A and 10B are views of a one-way valve according to a second embodiment of the present invention from different perspectives. [Figure 15] FIG. 4 is a partial cross-sectional view of a container kit according to a second embodiment of the present invention. [Figure 16] FIG. 10 is a view showing a state in which an additional container is stacked on top of a container kit according to a second embodiment of the present invention. [Figure 17] FIG. 10 is a partial view of a container kit according to a third embodiment of the present invention, taken from a different perspective. [Figure 18] FIG. 10 is a partial view of a container kit according to a third embodiment of the present invention, taken from a different perspective. [Figure 19] 10A and 10B are partial cross-sectional views of a container kit according to a third embodiment of the present invention in a different state. [Figure 20] 10A and 10B are partial cross-sectional views of a container kit according to a third embodiment of the present invention in a different state. DETAILED DESCRIPTION OF THE INVENTION

[0029] In the following detailed description of the preferred embodiment, reference is made to the accompanying drawings, which form a part hereof, and in which is shown, by way of illustration, specific embodiments in which the invention may be practiced. In this regard, directional terms such as "top," "bottom," "left," "right," "front," and "rear" are used with reference to the orientation of the figures being described. Components of the invention may be oriented in many different directions. As such, directional terminology is used for purposes of explanation and is in no way limiting. Accordingly, the drawings and description are to be regarded as illustrative in nature and not restrictive. Furthermore, unless specified, the term "connect" is intended to mean either an indirect or direct mechanical connection. Thus, when a first device is coupled to a second device, the connection may be via a direct mechanical connection or via an indirect mechanical connection via a connection to another device.

[0030] Reference is now made to FIGS. 1 and 2. FIG. 1 is a diagram of a container kit 1 according to an embodiment of the present invention. FIG. 2 is an exploded view of the container kit 1 according to the first embodiment of the present invention. As shown in FIGS. 1 and 2, the container kit 1 includes a container 11 and a one-way valve 12. The one-way valve 12 is configured to be attached to the container 11. When the one-way valve 12 is attached to the container 11, the one-way valve 12 allows air inside the container 11 to be extracted from the container 11 by a vacuum device 2, for example, a portable vacuum pump, and prevents ambient air outside the container 11 from entering the container 11. In this embodiment, the container 11 may be a mason jar, and the one-way valve 12 may be attached to a cover of the mason jar having a small wall thickness. However, the present invention is not limited to this embodiment.

[0031] Please refer to Figures 3 to 7. Figures 3 and 4 are views of the one-way valve 12 according to the first embodiment of the present invention from different perspectives. Figure 5 is a partial view of the one-way valve 12 according to the first embodiment of the present invention. Figure 6 is another partial view of the one-way valve 12 according to the first embodiment of the present invention. Figure 7 is a cross-sectional view of the one-way valve 12 according to the first embodiment of the present invention. As shown in Figures 3 and 4, the one-way valve 12 includes an upper portion 121, a lower portion 122, and a plurality of protrusions 123. The upper portion 121 is elastically deformable. The lower portion 122 is integrally connected to the upper portion 121. The plurality of protrusions 123 protrude from the lower portion 122 toward the upper portion 121 and are separated from the upper portion 121. Two adjacent protrusions 123 among the plurality of protrusions 123 are arranged with a space between them. In order to allow air inside the container 11 to be extracted from the container 11 and to prevent ambient air outside the container 11 from entering the container 11, the multiple protrusions 123 are configured to abut against the container 11 so that the upper portion 121 is elastically deformed by the container 11 when the one-way valve 12 is attached to the container 11. Specifically, in this embodiment, the one-way valve 12 has an integral structure, and the upper portion 121, the lower portion 122, and the multiple protrusions 123 may be formed from the same elastically deformable material. However, the present invention is not limited to this embodiment.

[0032] Furthermore, as shown in FIGS. 4 to 7 , in this embodiment, each of the multiple protrusions 123 is formed in a hemispherical shape. The lower portion 122 includes a stem body 1221 and a platform structure 1222. The stem body 1221 is integrally connected to the upper portion 121 and configured to penetrate the container 11. The platform 1122 (platform structure 1222) extends from the stem body 1221 and is separated from the upper portion 121, and the multiple protrusions 123 protrude from the platform structure 1222. The multiple protrusions 123 are arranged in a circle having a first diameter D1. The outer periphery of the upper portion 121 has a second diameter D2. The second diameter D2 is larger than the first diameter D1. However, the present invention is not limited to this embodiment. For example, in another embodiment, the multiple protrusions may be arranged in a quadrangular shape. Alternatively, in another embodiment, the protrusions may be formed in a cubic shape.

[0033] In addition, as shown in FIGS. 4 to 7 , in this embodiment, a recessed structure 1211 is formed in the upper portion 121. When the one-way valve 12 is removed from the container 11 and in an undeformed state, each of the multiple protrusions 123 is at least partially housed within the recessed structure 1211. When the one-way valve 12 is attached to the container 11, each of the multiple protrusions 123 is moved from within the recessed structure 1211 by the container 11. Preferably, the depth of the recessed structure 1211 gradually decreases from the inside to the outside. With this configuration, when the one-way valve 12 is attached to the container 11, the upper portion 121 of the one-way valve 12 can be sufficiently elastically deformed by the container 11, thereby ensuring proper engagement between the upper portion 121 of the one-way valve 12 and the container 11 and preventing leakage. However, the present invention is not limited to this embodiment. For example, in another embodiment, the recessed structure may be omitted.

[0034] Reference is now made to Figures 8 and 9. Figure 8 is a partial view of the container kit 1 according to the first embodiment of the present invention, in which the one-way valve 12 is attached to the container 11 and in a first use state. Figure 9 is a partial view of the container kit 1 according to the first embodiment of the present invention, in which the one-way valve 12 is attached to the container 11 and in a second use state. When the one-way valve 12 is attached to the container 11 by a stem body 1221 that penetrates the container 11, the one-way valve 12 can be switched between the first use state shown in Figure 8 and the second use state shown in Figure 9. When the vacuum device 2 is not activated or does not exist, the one-way valve 12 can be in the first use state shown in Figure 8. When the one-way valve 12 is in a first use state shown in Fig. 8, the multiple protrusions 123 are abutted by the inner surface 111 of the container 11, and the upper portion 121 is elastically deformed by the outer surface 112 of the container 11, i.e., the upper portion 121 and the outer surface 112 of the container 11 are elastically engaged with each other, thereby preventing ambient air outside the container 11 from entering the container 11. When a vacuum device 2 is provided and activated, the one-way valve 12 can be in a second use state as shown in Fig. 9. When the one-way valve 12 is in the second use state shown in Fig. 9, the upper portion 121 is driven by the vacuum device 2 to at least partially separate from the outer surface 112 of the container 11, creating a fluid passage formed by a space between two adjacent protrusions 123 of the multiple protrusions 123 and the inner surface 111 of the container 11, and a space between the upper portion 121 and the outer surface 112 of the container 11. This allows the air in the container 11 to be extracted from the container 11 through the fluid passage by the vacuum device 2. It should be noted that, as shown in Figures 8 and 9, when the one-way valve 12 is attached to the container 11, the multiple protrusions 123 continue to abut against the inner surface 111 of the container 11 and do not separate from the inner surface 111 of the container 11.

[0035] Please refer to Figures 8 and 10. Figure 10 is a partial view of the container kit 1 according to the first embodiment of the present invention, in which the one-way valve 12 is attached to the container 11 and in a third use state. As shown in Figures 8 and 10, the one-way valve 12 further includes a channel structure 124 and a resilient structure 125. The channel structure 124 penetrates the lower portion 122 and the upper portion 121, and has a lower opening 1241 formed in the lower portion 122 and an upper opening 1242 formed in the upper portion 121. Preferably, in this embodiment, the channel structure 124 penetrates the stem body 1221 of the lower portion 122, and the lower opening 1241 is formed at the lower end of the stem body 1221 of the lower portion 122. The resilient structure 125 extends from the upper surface of the upper portion 121 and covers the upper opening 1242. The elastic structure 125 is made of an elastically deformable material, and the thickness of the elastic structure 125 is smaller than the thickness of the upper portion 121. In this manner, the elastic structure 125 can easily elastically deform and restore in response to the pressure difference between the internal air pressure of the container 11 and the external air pressure, thereby moving between the protruding state shown in FIG. 8 and the non-protruding state shown in FIG. 10. Specifically, when the air inside the container 11 is removed from the container 11, thereby increasing the pressure difference between the internal air pressure of the container 11 and the external air pressure, the elastic structure 125 can move from the protruding state shown in FIG. 8 to the non-protruding state shown in FIG. 10 due to its elastic deformation. Furthermore, when ambient air is introduced into the container 11 to reduce the pressure difference between the internal air pressure of the container 11 and the external air pressure, the elastic structure 125 can move from the non-protruding state shown in FIG. 10 to the protruding state shown in FIG. 8 due to its restoring force. Therefore, by observing the elastic structure 125, the user can recognize whether the inside of the container 11 is well-vacuumized or not.

[0036] Please refer to Figures 11 to 16. Figure 11 is a partial view of a container kit 1' according to a second embodiment of the present invention. Figure 12 is a partial exploded view of the container kit 1' according to the second embodiment of the present invention. Figures 13 and 14 are views of a one-way valve 12' according to the second embodiment of the present invention from different perspectives. Figure 15 is a partial cross-sectional view of the container kit 1' according to the second embodiment of the present invention. Figure 16 is a view showing a state in which an additional container 3' is stacked on top of the container kit 1' according to the second embodiment of the present invention. As shown in Figures 11 to 16, unlike the first embodiment, in this embodiment, the cover 11A' of the container 11' of the container kit 1' includes an outer portion 11A1' and an inner portion 11A2' that are detachably connected to each other, and the one-way valve 12' is attached to the inner portion 11A2' of the cover 11A' of the container 11'. Furthermore, in this embodiment, a plurality of extension structures 121A' are formed on the upper surface of the upper portion 121' of the one-way valve 12' and are configured to abut against the bottom portion of the additional container 3'. When the additional container 3' is stacked on top of the container kit 1' and supported by the cover 11A', the plurality of extension structures 121A' provide friction between the container kit 1' and the additional container 3' to prevent relative movement between the container kit 1' and the additional container 3'. Preferably, the extension structure 121A' may be a conical structure and may be made of an elastically deformable material. In addition, in this embodiment, a protruding ring 1221A' is formed at the lower end of the stem body 1221' of the lower portion 122' of the one-way valve 12'. By pulling this protruding ring 1221A' in a predetermined direction D by hand or with a tool, the one-way valve 12' can be easily attached to the inner portion 11A2' of the cover 11A' of the container 11'. Other details of this embodiment are similar to those of the first embodiment, and similar modifications are possible. For simplicity, detailed descriptions are omitted in this specification.

[0037] Please refer to Figures 17 to 20. Figures 17 and 18 are partial views of a container kit 1" according to a third embodiment of the present invention from different viewpoints. Figures 19 and 20 are partial cross-sectional views of a container kit 1" according to a third embodiment of the present invention in different states. As shown in Figures 17 to 20, unlike the first embodiment, in this embodiment, the cover 11A" of the container 11" of the container kit 1" includes an outer portion 11A1" and an inner portion 11A2" that are detachably connected to each other. A one-way valve 12" is attached to the inner portion 11A2" of the cover 11A" of the container 11". Furthermore, in this embodiment, a channel structure 124" penetrates the lower portion 122" and has a lower opening 1241" formed at the lower end of the lower portion 122" and an upper opening 1242" formed at the upper end of the lower portion 122". Preferably, the channel structure 124" penetrates the stem body 1221" of the lower portion 122", and the lower opening 1241" and the upper opening 1242" are formed at the lower and upper ends of the stem body 1221" of the lower portion 122", respectively. The upper portion 121″ covers the upper opening 1242″ and can easily move between the protruding state shown in FIG. 19 and the non-protruding state shown in FIG. 20 by elastic deformation and its restoration, depending on the pressure difference between the internal air pressure and the external air pressure of the container 11″. Specifically, when the air inside the container 11″ is extracted from the container 11″ to increase the pressure difference between the internal air pressure and the external air pressure of the container 11″, the upper portion 121″ can move from the protruding state shown in FIG. 19 to the non-protruding state shown in FIG. 20 by its elastic deformation. Furthermore, when ambient air is introduced into the container 11″ to decrease the pressure difference between the internal air pressure and the external air pressure of the container 11″, the upper portion 121″ can move from the non-protruding state shown in FIG. 20 to the protruding state shown in FIG. 19 by its restoration force. Therefore, by observing the upper portion 121″, a user can recognize whether the inside of the container 11″ has been sufficiently evacuated.

[0038] It should be noted that when the one-way valve 12" is in the state shown in Figure 19, the multiple protrusions 123" are abutted against the inner surface 111" of the container 11" and are moved from the recess structure 1211" formed in the recess of the upper part 121", allowing the upper part 121" to be elastically deformed by the outer surface 112" of the container 11". When the one-way valve 12" is in the state shown in Figure 20, the multiple protrusions 123" are driven to separate from the inner surface 111" of the container 11" by the movement of the lower part 122" due to the collapse of the upper part 121".

[0039] In addition, in this embodiment, the protruding ring 1221A″ is formed at the lower end of the stem body 1221 of the lower part 122″ so that the one-way valve 12″ can be easily attached to the inner part 11A2″ of the cover 11A″ of the container 11″ by pulling the protruding ring 1221A″ by hand or with a tool in a predetermined direction D. Other details of this embodiment are similar to those of the first embodiment and have similar modifications. Detailed description will be omitted in this specification for the sake of simplicity.

[0040] In contrast to the background art, the one-way valve of the present invention utilizes multiple protrusions that are abutted by the inner surface of a container, allowing the upper portion to be elastically deformed by the outer surface of the container when the one-way valve is attached to the container to evacuate air inside the container and prevent ambient air outside the container from entering the container. This configuration makes the one-way valve of the present invention not only suitable for attachment to containers with large wall thicknesses, but also particularly suitable for attachment to containers with small wall thicknesses, such as mason jar covers. Therefore, the one-way valve of the present invention is versatile.

[0041] Those skilled in the art will readily recognize that numerous modifications and variations of the apparatus and method may be made while retaining the teachings of the present invention. Accordingly, it is intended that the above disclosure be construed as limited only by the metes and bounds of the appended claims.

Claims

1. A one-way valve adapted to fit into a container, an upper portion that is elastically deformable; a lower portion integrally connected to said upper portion; a plurality of protrusions projecting from the lower portion toward the upper portion and separated from the upper portion, wherein two adjacent protrusions of the plurality of protrusions are spaced apart from each other, and the plurality of protrusions are configured to be abutted by an inner surface of the container and to elastically deform the upper portion with an outer surface of the container.

2. a recessed structure formed in the upper portion; The one-way valve of claim 1 , wherein each of the plurality of protrusions is at least partially received within the recess structure when the one-way valve is removed from the container and in an undeformed state.

3. The one-way valve according to claim 2 , wherein the depth of the recessed structure gradually decreases from the inside to the outside.

4. the lower portion includes a stem body and a platform structure; the stem body is integrally connected to the upper portion and configured to penetrate the container when a one-way valve is attached to the container; The one-way valve of claim 1 , wherein the platform structure extends from the stem body and is separated from the upper portion, and the plurality of protrusions protrude from the platform structure.

5. 2. The one-way valve of claim 1, wherein the plurality of protrusions are arranged in a circle having a first diameter, and the periphery of the upper portion has a second diameter, the second diameter being greater than the first diameter.

6. 2. The one-way valve of claim 1, wherein the upper portion is configured to be at least partially separated from the outer surface of the container when the one-way valve is attached to the container, providing a fluid passage formed by a space between two adjacent protrusions of the plurality of protrusions and the inner surface of the container, and a space between the upper portion and the outer surface of the container.

7. the device further comprises a channel structure and a resilient structure, the channel structure penetrating the lower portion and the upper portion and having a lower opening formed in the lower portion and an upper opening formed in the upper portion, the resilient structure extending from an upper surface of the upper portion and covering the upper opening; 2. The one-way valve of claim 1, wherein the thickness of the resilient structure is less than the thickness of the upper portion, and the resilient structure is movable between a protruding state and a non-protruding state in response to a pressure difference between the internal air pressure and the external air pressure of the container.

8. further comprising a channel structure penetrating the lower portion, the channel structure having a lower opening formed at a lower end of the lower portion and an upper opening formed at an upper end of the lower portion; 2. The one-way valve of claim 1, wherein the upper portion covers the upper opening, and the upper portion is movable between a protruding state and a non-protruding state in response to a pressure difference between the internal air pressure and the external air pressure of the container.

9. The one-way valve of claim 1 , wherein a plurality of extension structures are formed on the upper surface of the upper portion and configured to abut against a bottom portion of the additional container.

10. 2. The one-way valve of claim 1, wherein a protruding ring is formed on the lower end of the stem body of said lower portion.

11. A container and a one-way valve configured to be attached to the container; The one-way valve is an upper portion that is elastically deformable; a lower portion integrally connected to said upper portion; a plurality of protrusions projecting from the lower portion toward the upper portion and spaced apart from the upper portion, wherein two adjacent protrusions of the plurality of protrusions are spaced apart from each other, and the plurality of protrusions are configured to be abutted by an inner surface of the container and to elastically deform the upper portion with an outer surface of the container; Container kit.

12. a recessed structure formed in the upper portion; The container kit of claim 11 , wherein each of the plurality of protrusions is at least partially received within the recess structure when the one-way valve is removed from the container and in an undeformed state.

13. The container kit according to claim 12 , wherein the depth of the recessed structure gradually decreases from the inside to the outside.

14. the lower portion includes a stem body and a platform structure; the stem body is integrally connected to the upper portion and configured to penetrate the container when the one-way valve is attached to the container; The container kit of claim 11 , wherein the platform structure extends from the stem body and is separated from the upper portion, and the plurality of protrusions protrude from the platform structure.

15. 12. The container kit of claim 11, wherein the plurality of projections are arranged in a circle having a first diameter, and the periphery of the upper portion has a second diameter, the second diameter being greater than the first diameter.

16. 12. The container kit of claim 11, wherein when the one-way valve is attached to the container, the upper portion is configured to be at least partially separated from the outer surface of the container, providing a fluid passageway formed by a space between two adjacent protrusions of the plurality of protrusions and the inner surface of the container, and a space between the upper portion and the outer surface of the container.

17. the one-way valve further includes a channel structure and a resilient structure, the channel structure penetrating the lower portion and the upper portion and having a lower opening formed in the lower portion and an upper opening formed in the upper portion, the resilient structure extending from an upper surface of the upper portion and covering the upper opening; 12. The container kit of claim 11, wherein the thickness of the resilient structure is smaller than the thickness of the upper portion, and the resilient structure is movable between a protruding state and a non-protruding state in response to a pressure difference between the internal air pressure and the external air pressure of the container.

18. the one-way valve further includes a channel structure extending through the lower portion, the channel structure having a lower opening formed at a lower end of the lower portion and an upper opening formed at an upper end of the lower portion; 12. The container kit of claim 11, wherein the upper portion covers the upper opening and is movable between a protruding state and a non-protruding state in response to a pressure difference between the internal air pressure and the external air pressure of the container.

19. The container kit of claim 11 , wherein a plurality of extension structures are formed on the upper surface of the upper portion and configured to abut the bottom portion of the additional container.

20. 12. The container kit of claim 11, wherein a protruding ring is formed on the lower end of the stem body of the lower portion.

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