One-way valve and container assembly thereof

Abstract

A one-way valve for a container includes an upper portion, a lower portion, and a plurality of protrusions. And the upper part can generate elastic deformation. And the lower part is integrally connected with the upper part. The plurality of protrusions protrude from the lower portion toward the upper portion and are separated from the upper portion. Every two adjacent protruding parts in the multiple protruding parts are separated from each other. The plurality of protrusions abut against the inner surface of the container, and the outer surface of the container enables the upper portion to elastically deform. In addition, the invention further provides a related container assembly.

Description

Technical Field

[0001] The invention relates to a one-way valve and a container assembly thereof, in particular to a one-way valve and a container assembly thereof used for a thin-wall container. Background Art

[0002] There are various vacuum containers for storing food on the market. The vacuum container generally includes a container and a one-way valve. The container is used to hold food. The one-way valve is mounted on the container. The one-way valve allows air to be drawn out of the container, for example, by a vacuum pump, and prevents ambient air from entering the container. However, conventional one-way valves require thick-walled containers to ensure that the one-way valve is properly installed and works. Therefore, there is an urgent need to improve conventional vacuum containers. Summary of the invention

[0003] The object of the present invention is to provide a one-way valve suitable for a thin-wall container and a related container assembly to solve the above problems.

[0004] In order to achieve the above-mentioned object, the present invention discloses a one-way valve suitable for a container. The one-way valve comprises an upper portion, a lower portion and a plurality of protrusions. The upper portion is capable of elastic deformation. The lower portion is integrally connected with the upper portion. The plurality of protrusions protrude from the lower portion to the upper portion and are separated from the upper portion. Every two adjacent protrusions of the plurality of protrusions are separated from each other. The plurality of protrusions abut against the inner surface of the container, and the upper portion is elastically deformed through the outer surface of the container.

[0005] In one embodiment of the present invention, a recess is provided on the upper portion, and when the one-way valve is separated from the container and is in a non-elastic deformation state, at least a portion of each protrusion is accommodated in the recess.

[0006] In one embodiment of the present invention, the depth of the recess gradually decreases from the inside to the outside.

[0007] In one embodiment of the present invention, the lower portion includes a valve stem and a platform portion. The valve stem is integrally connected to the upper portion and passes through the container when the one-way valve is installed on the container. The platform extends from the valve stem and is separated from the upper portion, and the plurality of protrusions protrude from the platform portion.

[0008] In one embodiment of the present invention, the plurality of protrusions are arranged on a circle having a first diameter. The outer diameter of the upper portion is a second diameter, and the second diameter is greater than the first diameter.

[0009] In one embodiment of the present invention, when the one-way valve is mounted on the container, at least a portion of the upper portion is separated from the outer surface of the container to provide a fluid channel formed in the gap between two adjacent protrusions among the plurality of protrusions and the inner surface of the container and the gap between the upper portion and the outer surface of the container.

[0010] In one embodiment of the present invention, when the one-way valve is mounted on the container, the plurality of protrusions remain in contact with the inner surface of the container and are not separated from the inner surface of the container.

[0011] In one embodiment of the present invention, the one-way valve further comprises a channel and an elastic portion. The channel passes through the lower portion and the upper portion, and a lower opening is provided at the lower portion, and an upper opening is provided at the upper portion. The elastic portion extends on the upper surface of the upper portion and covers the upper opening. The thickness of the elastic portion is smaller than the thickness of the upper portion, and the elastic portion can move between a protruding position and a non-protruding position according to the pressure difference between the internal air pressure and the external air pressure of the container.

[0012] In one embodiment of the present invention, the one-way valve further comprises a passage. The passage passes through the lower portion, and a lower opening is provided at the lower end of the lower portion, and an upper opening is provided at the upper end of the lower portion. The upper portion covers the upper opening, and the upper portion can move between a protruding position and a non-protruding position according to a pressure difference between the internal air pressure of the container and the external air pressure.

[0013] In one embodiment of the present invention, a plurality of extensions are provided on the upper surface of the upper portion, and the plurality of extensions abut against the bottom of the additional container.

[0014] In one embodiment of the present invention, a protruding ring is provided at the lower end of the valve stem of the lower portion.

[0015] In order to achieve the above-mentioned object, the present invention also discloses a container assembly, comprising a container and a one-way valve mounted on the container. The one-way valve comprises an upper portion, a lower portion and a plurality of protrusions. The upper portion is capable of elastic deformation. The lower portion is integrally connected with the upper portion. The plurality of protrusions protrude from the lower portion to the upper portion and are separated from the upper portion. Every two adjacent protrusions of the plurality of protrusions are separated from each other. The protrusions abut against the inner surface of the container, and the upper portion is elastically deformed through the outer surface of the container.

[0016] In one embodiment of the present invention, a recess is provided on the upper portion, and when the one-way valve is separated from the container and is in a non-elastic deformation state, at least a portion of each protrusion is accommodated in the recess.

[0017] In one embodiment of the present invention, the depth of the recess gradually decreases from the inside to the outside.

[0018] In one embodiment of the present invention, the lower portion includes a valve stem and a platform portion. The valve stem is integrally connected to the upper portion and passes through the container when the one-way valve is installed on the container. The platform extends from the valve stem and is separated from the upper portion, and the plurality of protrusions protrude from the platform portion.

[0019] In one embodiment of the present invention, the plurality of protrusions are arranged on a circle having a first diameter. The outer diameter of the upper portion is a second diameter, and the second diameter is greater than the first diameter.

[0020] In one embodiment of the present invention, when the one-way valve is mounted on the container, at least a portion of the upper portion is separated from the outer surface of the container to provide a fluid channel formed in the gap between two adjacent protrusions among the plurality of protrusions and the inner surface of the container and the gap between the upper portion and the outer surface of the container.

[0021] In one embodiment of the present invention, when the one-way valve is mounted on the container, the plurality of protrusions remain in contact with the inner surface of the container and are not separated from the inner surface of the container.

[0022] In one embodiment of the present invention, the one-way valve further comprises a channel and an elastic portion, the channel passes through the lower portion and the upper portion, a lower opening is provided at the lower portion, and an upper opening is provided at the upper portion. The elastic portion extends from the upper surface of the upper portion and covers the upper opening. The thickness of the elastic portion is smaller than the thickness of the upper portion, and the elastic portion can move between a protruding position and a non-protruding position according to the pressure difference between the internal air pressure and the external air pressure of the container.

[0023] In one embodiment of the present invention, the one-way valve further comprises a channel. The channel passes through the lower portion, and a lower opening is provided at the lower end of the lower portion, an upper opening is provided at the upper end of the lower portion, the upper portion covers the upper opening, and the upper portion can move between a protruding position and a non-protruding position according to a pressure difference between the internal air pressure of the container and the external air pressure.

[0024] In one embodiment of the present invention, a plurality of extension portions are provided on the upper surface of the upper portion, and the plurality of extension portions abut against the bottom of the additional container.

[0025] In one embodiment of the present invention, a protruding ring is provided at the lower end of the valve stem of the lower portion.

[0026] In summary, the one-way valve of the present invention utilizes a plurality of protrusions that abut against the inner surface of the container, so that the upper portion can be elastically deformed under the action of the outer surface of the container, so that when the one-way valve is installed in the container, the air in the container is allowed to be drawn out of the container, and the ambient air outside the container is prevented from entering the container. With such a setting, the one-way valve of the present invention can be installed not only on containers with thicker walls, but also on containers with thinner walls, such as the lid of a Mason jar. Therefore, the one-way valve of the present invention has universality.

[0027] Those skilled in the art will better understand the present invention after reading the following detailed description and accompanying drawings showing preferred embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of a container assembly in a first embodiment of the present invention;

[0029] Figure 2 An exploded view of a container assembly in a first embodiment of the present invention;

[0030] Figure 3 and Figure 4 Schematic diagram of a one-way valve in different viewing directions according to the first embodiment of the present invention;

[0031] Figure 5 A partial view of a one-way valve in the first embodiment of the present invention;

[0032] Figure 6 It is a partial schematic diagram of the one-way valve in another viewing direction in the first embodiment of the present invention;

[0033] Figure 7 is a cross-sectional view of the one-way valve in the first embodiment of the present invention when it is removed from the container and is in a non-elastic deformation state;

[0034] Figure 8 It is a partial schematic diagram of the container assembly when the one-way valve is installed on the container and is in the first use state in the first embodiment of the present invention;

[0035] Fig. 9 It is a partial schematic diagram of the container assembly when the one-way valve is installed on the container and is in the second use state in the first embodiment of the present invention;

[0036] Fig.10 It is a partial schematic diagram of the container assembly when the one-way valve is installed on the container and is in the third use state in the first embodiment of the present invention;

[0037] Fig.11 It is a partial schematic diagram of a container assembly in a second embodiment of the present invention;

[0038] Fig.12 A partial exploded view of a container assembly in a second embodiment of the present invention;

[0039] Fig.13 and Fig.14 Schematic diagram of a one-way valve in different viewing directions according to a second embodiment of the present invention;

[0040] Fig.15 A partial cross-sectional view of a container assembly in a second embodiment of the present invention;

[0041] Fig.16 is a schematic diagram of an additional container superimposed on the container assembly in the second embodiment of the present invention;

[0042] Fig.17 and Fig.18 It is a partial schematic diagram of a container assembly in different viewing angles in the third embodiment of the present invention;

[0043] Fig.19 and Fig. 20 It is a partial cross-sectional view of the container assembly in different states according to the third embodiment of the present invention. DETAILED DESCRIPTION

[0044] In the following detailed description of the preferred embodiments, reference is made to the accompanying drawings, which show, by way of illustration, specific embodiments in which the present invention may be implemented. Herein, directional terms, such as "up", "down", "left", "right", "front", "rear", etc., are used in the description of the directions of the accompanying drawings with reference. The components of the present invention can be arranged in a number of different directions. Therefore, the directional terms are used for illustrative purposes and not for any limitation. Therefore, the drawings and descriptions should be regarded as illustrative rather than restrictive. In addition, unless otherwise specified, the term "connection" refers to an indirect or direct electrical / mechanical connection. Therefore, if a first device is connected to a second device, the connection can be through a direct electrical / mechanical connection, or an indirect mechanical connection through other devices or connection methods.

[0045] See also Figure 1 and Figure 2 , Figure 1 Schematic diagram of a container assembly 1 in one embodiment of the present invention. Figure 2 FIG. 1 is an exploded view of the container assembly 1 in the first embodiment of the present invention. Figure 1 and Figure 2As shown, the container assembly 1 includes a container 11 and a one-way valve 12, wherein the one-way valve 12 is installed on the container 11, and the air in the container 11 is extracted from the container 11 by a vacuum device 2, such as a portable vacuum pump, and when the one-way valve 12 is installed on the container 11, the ambient air outside the container 11 can be prevented from entering the container 11. In this embodiment, the container 11 can be a Mason jar, and the one-way valve 12 can be installed on the lid of a Mason jar with a relatively thin wall thickness. However, the present invention is not limited to this embodiment.

[0046] See also Figures 3 to 7 . Figure 3 and Figure 4 Schematic diagram of the one-way valve 12 in different viewing directions according to the first embodiment of the present invention. Figure 5 FIG. 1 is a partial view of the one-way valve 12 in the first embodiment of the present invention. Figure 6 It is a partial schematic diagram of the one-way valve 12 in the first embodiment of the present invention from another viewing direction. Figure 7 FIG. 1 is a cross-sectional view of the one-way valve 12 described in the first embodiment of the present invention. Figure 3 to Figure 4 As shown, 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 to the upper portion 121 and are separated from the upper portion 121. Two adjacent protrusions 123 in the plurality of protrusions 123 are separated from each other. The plurality of protrusions 123 are arranged to be connected to the container 11, and the upper portion 121 is elastically deformed by the container 11, so that when the one-way valve 12 is installed in the container 11, the air in the container 11 can be drawn out of the container 11, and the ambient air outside the container 11 is prevented from entering the container 11. Specifically, in the present embodiment, the one-way valve 12 is an integrated structure, and the upper portion 121, the lower portion 122 and the plurality of protrusions 123 can be made of the same elastically deformable material. However, the present invention is not limited to the present embodiment.

[0047] Further, if Figures 4 to 7As shown, in this embodiment, each protrusion 123 is hemispherical. The lower part 122 includes a valve stem 1221 and a platform part 1222. The valve stem 1221 is integrally connected to the upper part 121 and passes through the container 11. The platform part 1122 extends from the valve stem 1221 and is separated from the upper part 121, and the multiple protrusions 123 protrude from the platform part 1222. The multiple protrusions 123 are arranged on a circle with a diameter of a first diameter D1. The outer diameter of the upper part 121 is 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 can be arranged in a square. Or, in another embodiment, the protrusions can be arranged in a rectangle.

[0048] In addition, if Figures 4 to 7 As shown, in this embodiment, a recess 1211 is provided on the upper portion 121. When the one-way valve 12 is separated from the container 11 and is in a non-elastic deformation state, at least a portion of each protrusion 123 is accommodated in the recess 1211. When the one-way valve 12 is installed on the container 11, each protrusion 123 is moved out of the recess 1211 by the container 11. Preferably, the depth of the recess 1211 gradually decreases from the inside to the outside. This structure allows the upper portion 121 of the one-way valve 12 to fully undergo elastic deformation under the action of the container 11, so as to ensure that the upper portion 121 of the one-way valve 12 is correctly installed with the container 11, so as to prevent any leakage when the one-way valve 12 is installed in the container 11. However, the present invention is not limited to this embodiment. For example, in another embodiment, the recess can be omitted.

[0049] See also Figure 8 and Fig. 9 . Figure 8 It is a partial schematic diagram of the container assembly 1 when the one-way valve 12 is installed on the container 11 and is in the first use state in the first embodiment of the present invention. Fig. 9 FIG. 1 is a partial schematic diagram of the container assembly 1 when the one-way valve 12 is installed on the container 11 and is in the second use state in the first embodiment of the present invention. When the one-way valve 12 passes through the container 11 through the valve stem 1221 to install the one-way valve 12 on the container 11, the one-way valve 12 can be Figure 8 The first use state shown and Fig. 9 When the vacuum device 2 is not activated or the vacuum device 2 is not set, the one-way valve 12 can be in a state where Figure 8 The first use state shown. When the one-way valve 12 is in Figure 8In the first use state shown, the plurality of protrusions 123 abut against the inner surface 111 of the container 11, and the outer surface 112 of the container 11 causes the upper portion 121 to be elastically deformed, that is, the upper portion 121 and the outer surface 112 of the container 11 are elastically connected to prevent ambient air outside the container 11 from entering the container 11. When the vacuum device 2 is set and activated, the one-way valve 12 can be in Fig. 9 The second use state shown. When the second one-way valve 12 is in Fig. 9 In the second use state shown, at least a portion of the upper portion 121 is separated from the outer surface 112 of the container 11 under the action of the vacuum device 2, so as to provide a fluid channel formed in the gap between two adjacent protrusions 123 among the plurality of protrusions 123 and the inner surface 111 of the container 11 and the gap between the upper portion 121 and the outer surface 112 of the container 11, so that the air in the container 11 can be drawn out of the container 11 through the fluid channel under the action of the vacuum device 2. It should be noted that, if Figure 8 and Fig. 9 As shown, when the one-way valve 12 is installed on the container 11 , the plurality of protrusions 123 remain in contact with the inner surface 111 of the container 11 and are not separated from the inner surface 111 of the container 11 .

[0050] See also Figure 8 and Fig.10 . Fig.10 FIG. 1 is a partial schematic diagram of the container assembly 1 when the one-way valve 12 is installed on the container 11 and is in the third use state in the first embodiment of the present invention. Figure 8 and Fig.10 As shown, the one-way valve 12 also includes a channel 124 and an elastic portion 125. The channel 124 passes through the lower portion 122 and the upper portion 121, and forms a lower opening 1241 in the lower portion 122 and an upper opening 1242 in the upper portion 121. Preferably, in this embodiment, the channel 124 passes through the valve stem 1221 of the lower portion 122, and the lower opening 1241 is formed at the lower end of the valve stem 1221 of the lower portion 122. The elastic portion 125 extends from the upper surface of the upper portion 121 and covers the upper opening 1242. The elastic portion 125 is made of an elastically deformable material, and the thickness of the elastic portion 125 is less than the thickness of the upper portion 121. Therefore, when there is a pressure difference between the internal air pressure and the external air pressure of the container 11, the elastic portion 125 can be easily deformed and restored by elasticity. Figure 8 The highlighted position and Fig.10Specifically, when the pressure difference between the internal air pressure of the container 11 and the external air pressure is increased by evacuating the air in the container 11 from the container 11, the elastic portion 125 is elastically deformed so that the elastic portion 125 moves from the internal air pressure of the container 11 to the external air pressure of the container 11. Figure 8 The highlighted position shown is moved to Fig.10 when the ambient air flows into the container 11, reducing the pressure difference between the internal air pressure and the external air pressure of the container 11, the elastic deformation causes the elastic portion 125 from Fig.10 The non-prominent position shown is moved to Figure 8 Therefore, the user can determine whether the interior of the container 11 is fully evacuated by observing the elastic portion 125.

[0051] See also Figures 11 to 16 . Fig.11 It is a partial schematic diagram of the container assembly 1' in the second embodiment of the present invention. Fig.12 It is a partial exploded view of the container assembly 1' in the second embodiment of the present invention. Fig.13 and Fig.14 Schematic diagram of a one-way valve 12 ′ in different viewing directions according to the second embodiment of the present invention. Fig.15 It is a partial cross-sectional view of the container assembly 1' in the second embodiment of the present invention. Fig.16 FIG. 1 is a schematic diagram of an additional container 3' superimposed on the container assembly 1' in the second embodiment of the present invention. Figures 11 to 16 As shown, different from the first embodiment, in this embodiment, the lid 11A' of the container 11' in the container assembly 1' includes an outer part 11A1' and an inner part 11A2' that are detachably connected, and the one-way valve 12' is installed on the inner part 11A2' of the lid 11A' of the container 11'. Further, in this embodiment, a plurality of extensions 121A' are provided on the upper surface of the upper part 121' of the one-way valve 12'. When the accessory container 3' is stacked on the container assembly 1' and supported by the container 11A', the plurality of extensions 121A' abut against the bottom of the additional container 3', providing friction between the container assembly 1' and the additional container 3' to limit the relative movement between the container assembly 1' and the additional container 3'. Preferably, the extension 121A' may be conical and made of an elastically deformable material. In addition, in this embodiment, a protruding ring 1221A' is provided on the lower end of the valve stem 1221' of the lower part 122' of the one-way valve 12', so that the one-way valve 12' can be installed on the inner part 11A2' of the lid 11A' of the container 11' by pulling the protruding ring 1221A' in a predetermined direction D by hand or a tool. Other details of this embodiment are the same as those of the first embodiment and have similar changes. For the purpose of simplicity, detailed description is omitted herein.

[0052] See also Figures 17 to 20 . Fig.17 and Fig.18 It is a partial schematic diagram of a container assembly 1" in different viewing directions in the third embodiment of the present invention. Fig.19 and Fig. 20 1 is a partial cross-sectional view of a container assembly 1" in different states according to the third embodiment of the present invention. Figures 17 to 20 As shown, unlike the first embodiment, in this embodiment, the lid 11A" of the container 11" of the container assembly 1" includes a detachably connected outer part 11A1" and an inner part 11A2" and a one-way valve 12" installed on the inner part 11A2" of the lid 11A" of the container 11". Further, in this embodiment, the channel 124" passes through the lower part 122", and a lower opening 1241" is provided at the lower end of the lower part 122", and an upper opening 1242" is provided at the upper end of the lower part 122". Preferably, the channel 124" passes through the valve stem 1221" of the lower part 122", and the lower end and upper end of the valve stem 1221" of the lower part 122" are respectively provided with the lower opening 1241" and the upper opening 1242". The upper part 121" is covered with the upper opening 1242", and according to the pressure difference between the internal air pressure and the external air pressure of the container 11", it can be easily opened and closed by elastic deformation and elastic recovery. Fig.19 The highlighted position and Fig. 20 Specifically, when the air in the container 11" is evacuated from the container 11 and the pressure difference between the internal and external air pressures of the container 11 is increased, the upper portion 121" is elastically deformed so that the upper portion 121" moves from the container 11 to the non-protruding position shown in the figure. Fig.19 The highlighted position shown moves to Fig. 20 The non-protruding position shown in the figure introduces ambient air into the container 11'', and when the pressure difference between the internal air pressure and the external air pressure of the container 11 is reduced, the upper portion 121'' is elastically deformed so that the upper portion 121'' is Fig. 20 The non-protruding position shown is moved to Fig.19 Therefore, the user can determine whether the interior of the container 11 ″ is sufficiently evacuated by observing the upper portion 121 ″.

[0053] It should be noted that the plurality of protrusions 123" abut against the inner surface 111" of the container 11" and move out of the recess 1211" provided in the recess of the upper portion 121", so that when the one-way valve 12" is in Fig.19 In the state shown, the upper portion 121 can be elastically deformed by the outer surface 112 of the container 11. Fig. 20In the state shown, due to the sinking of the upper portion 121 ″, the lower portion 122 ″ moves, so that the plurality of protrusions 123 ″ are separated from the inner surface 111 ″ of the container 11 ″.

[0054] Furthermore, in the present embodiment, a protruding ring 1221A" is provided at the lower end of the valve stem 1221" of the lower portion 122", and the one-way valve 12" can be simply installed on the inner part 11A2" of the lid 11A" of the container 11" by pulling the protruding ring 1221A" along the predetermined direction D by hand or with a tool. Other details of the present embodiment are the same as those of the first embodiment and have similar changes. For the purpose of simplicity, a detailed description is omitted herein.

[0055] In contrast to the prior art, the one-way valve of the present invention utilizes a plurality of protrusions that abut against the inner surface of the container so that the upper portion can be elastically deformed under the action of the outer surface of the container, so that when the one-way valve is installed in the container, the air in the container is allowed to be drawn out of the container and the ambient air outside the container is prevented from entering the container. With such an arrangement, the one-way valve of the present invention is not only suitable for installation on containers with thick walls, but is also particularly suitable for installation on containers with thin walls, such as the lid of a Mason jar. Therefore, the one-way valve of the present invention has universality.

[0056] For those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention. Therefore, the above embodiments only express several implementation methods of the present invention, but cannot be understood as limiting the scope of the invention patent.

Claims

1. A one-way valve suitable for a container, characterized in that: include: the upper part, which is capable of elastic deformation; a lower portion, integrally connected to the upper portion; A plurality of protrusions protrude from the lower portion toward the upper portion and are separated from the upper portion, and every two adjacent protrusions among the plurality of protrusions are separated from each other. The plurality of protrusions abut against the inner surface of the container, and the upper portion is elastically deformed through the outer surface of the container.

2. The one-way valve according to claim 1, characterized in that: A recess is provided in the upper portion, and when the one-way valve is separated from the container and is in a non-elastic deformation state, at least a portion of each protrusion is accommodated in the recess.

3. The one-way valve according to claim 2, characterized in that: The depth of the recessed portion gradually decreases from the inside to the outside.

4. The one-way valve according to claim 1, characterized in that: The lower portion includes a valve stem and a platform portion, wherein the valve stem is integrally connected to the upper portion and passes through the container when the one-way valve is installed on the container, the platform extends from the valve stem and is separated from the upper portion, and the plurality of protrusions protrude from the platform portion.

5. The one-way valve according to claim 1, characterized in that: The plurality of protrusions are arranged on a circle having a first diameter, an outer circumferential diameter of the upper portion is a second diameter, and the second diameter is greater than the first diameter.

6. The one-way valve according to claim 1, characterized in that: When the one-way valve is mounted on the container, at least a portion of the upper portion is separated from the outer surface of the container to provide a fluid passage formed in the gap between two adjacent protrusions among the plurality of protrusions and the inner surface of the container and in the gap between the upper portion and the outer surface of the container.

7. The one-way valve according to claim 1, characterized in that: It also includes a channel and an elastic part, the channel passes through the lower part and the upper part, and a lower opening is set in the lower part, and an upper opening is set in the upper part, the elastic part extends from the upper surface of the upper part and covers the upper opening, and the thickness of the elastic part is less than the thickness of the upper part; according to the pressure difference between the internal air pressure and the external air pressure of the container, the elastic part can move between a protruding position and a non-protruding position.

8. The one-way valve according to claim 1, characterized in that: It also includes a channel, which passes through the lower part, and a lower opening is set at the lower end of the lower part, and an upper opening is set at the upper end of the lower part, and the upper part covers the upper opening. According to the pressure difference between the internal air pressure and the external air pressure of the container, the upper part can move between a protruding position and a non-protruding position.

9. The one-way valve according to claim 1, characterized in that: A plurality of extension parts are provided on the upper surface of the upper part, and the plurality of extension parts abut against the bottom of the additional container.

10. The one-way valve according to claim 1, characterized in that: A protruding ring is provided at the lower end of the valve stem at the lower part.

11. A container assembly, characterized in that: include: container; A one-way valve is installed on the container, and the one-way valve comprises: the upper part, which is capable of elastic deformation; a lower portion, integrally connected to the upper portion; A plurality of protrusions protrude from the lower portion toward the upper portion and are separated from the upper portion, and every two adjacent protrusions among the plurality of protrusions are separated from each other. The plurality of protrusions abut against the inner surface of the container, and the upper portion is elastically deformed through the outer surface of the container.

12. The container according to claim 11, characterized in that: A recess is provided in the upper portion, and when the one-way valve is separated from the container and is in a non-elastic deformation state, at least a portion of each protrusion is accommodated in the recess.

13. The container according to claim 12, characterized in that: The depth of the recessed portion gradually decreases from the inside to the outside.

14. The container according to claim 11, characterized in that: The lower portion includes a valve stem and a platform portion, wherein the valve stem is integrally connected to the upper portion and passes through the container when the one-way valve is installed on the container, the platform extends from the valve stem and is separated from the upper portion, and the plurality of protrusions protrude from the platform portion.

15. The container according to claim 11, characterized in that: The plurality of protrusions are arranged on a circle having a first diameter, an outer circumferential diameter of the upper portion is a second diameter, and the second diameter is greater than the first diameter.

16. The container according to claim 11, characterized in that: When the one-way valve is mounted on the container, at least a portion of the upper portion is separated from the outer surface of the container to provide a fluid passage formed in the gap between two adjacent protrusions among the plurality of protrusions and the inner surface of the container and in the gap between the upper portion and the outer surface of the container.

17. The container according to claim 11, characterized in that: The one-way valve also includes a channel and an elastic portion, the channel passes through the lower portion and the upper portion, a lower opening is arranged at the lower portion, and an upper opening is arranged at the upper portion, the elastic portion extends from the upper surface of the upper portion and covers the upper opening, and the thickness of the elastic portion is less than the thickness of the upper portion; according to the pressure difference between the internal air pressure and the external air pressure of the container, the elastic portion can move between a protruding position and a non-protruding position.

18. The container according to claim 11, characterized in that: The one-way valve also includes a channel, which passes through the lower part, and a lower opening is arranged at the lower end of the lower part, and an upper opening is arranged at the upper end of the lower part, and the upper part covers the upper opening. According to the pressure difference between the internal air pressure and the external air pressure of the container, the upper part can move between a protruding position and a non-protruding position.

19. The container according to claim 11, characterized in that: A plurality of extension parts are provided on the upper surface of the upper part, and the plurality of extension parts abut against the bottom of the additional container.

20. The container according to claim 11, characterized in that: A protruding ring is provided at the lower end of the valve stem at the lower part.

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