A sealing cap and a sealing container

Abstract

This utility model relates to the field of sealed containers, and particularly to a sealing cap and a sealed container. It includes an outer cap and an inner cap, which are connected to form an extraction port extending through their upper and lower sides. A one-way valve is installed at the extraction port. The outer cap covers the outer periphery of the inner cap and has a first inner cavity with its opening facing downwards. The inner cap has a downwardly extending mounting portion and a second inner cavity with its upper end facing upwards. A sealing portion, a first locking portion located around the sealing portion, and a second locking portion located around the first locking portion are provided between the first and second inner cavities. This improves the structure of the cap, resulting in good sealing performance and facilitating the maintenance of a sealed state.

Description

Technical Field

[0001] This utility model relates to the field of sealed containers, and in particular to a sealing cap and a sealed can. Background Technology

[0002] Existing airtight containers are designed to prevent the contents from becoming damp or spoiling through sealing. Typical airtight containers rely on a tight seal between the bottle body and the cap to achieve a tight seal. For scenarios requiring even better sealing, vacuum-sealed containers have emerged. These containers maintain a negative pressure state by evacuating the gas inside the container after the cap is closed. This method, however, requires a high level of sealing performance from the cap itself, particularly the cap body. Currently, most methods involve applying sealing oil or sealants to the mounting points within the cap body to eliminate leaks caused by gaps in the assembly. However, this approach undoubtedly makes the cap assembly process cumbersome, increases steps, and raises costs. Utility Model Content

[0003] The purpose of this invention is to provide a sealing cover that improves the structure of the cover, resulting in good sealing performance and helping to maintain a sealed state.

[0004] To achieve the above objectives, the present invention adopts the following solution: A sealing cover includes an outer cover and an inner cover, the outer cover and the inner cover are connected to form an air extraction hole that extends through their upper and lower sides, and a one-way valve is installed at the air extraction hole. The outer cover covers the outer periphery of the inner cover, and the outer cover has a first inner cavity with its opening facing downward. The inner cover has a downwardly extending mounting portion, and the upper end of the inner cover has a second inner cavity with an upward opening. A sealing portion, a first locking portion located on the outer periphery of the sealing portion, and a second locking portion located on the outer periphery of the first locking portion are provided between the first inner cavity and the second inner cavity.

[0005] As described above, in a sealing cover, the sealing part is provided on the outer cover, and the lower end of the sealing part is a sealing plane, and the sealing plane is tightly attached to the bottom of the second inner cavity by the first locking part and the second locking part.

[0006] As described above, the inner cover has an upwardly protruding boss in the middle, the air extraction hole is provided on the boss, the sealing part is formed by a downward recess from the upper end face of the outer cover, and the sealing part is located on the outer periphery of the boss and has a through hole for the boss to extend out.

[0007] As described above, in a sealing cover, the outer periphery of the bottom of the second inner cavity that mates with the sealing plane is further provided with a positioning ring protrusion.

[0008] As described above, in a sealing cover, the first locking part is a first buckle located on the protrusion of the positioning ring, and the outer periphery of the sealing part is provided with a first fastening part that cooperates with the first buckle to fasten.

[0009] As described above, in a sealing cover, the second locking part is a second latch located in the second inner cavity and near the outer side of the inner cover, and the first inner cavity has a second fastening part that extends downward and engages with the second latch to fasten.

[0010] As described above, in a sealing cover, there are multiple first and second latches, which are evenly distributed along the circumferential direction.

[0011] As described above, the upper surface of the protrusion is further provided with a recessed mounting step, the mounting step is located outside the air extraction hole, and the mounting step is provided with an upwardly protruding annular sealing rib.

[0012] In the sealing cover described above, the one-way valve is a one-way rubber plug.

[0013] This utility model also provides a sealed container, including a bottle body, on which a sealing cap as described above is installed, the sealing cap being used for installation with an electric vacuum pump.

[0014] In summary, the advantages of this utility model over the prior art are: This utility model provides a sealing cover that improves the assembly and fitting structure between the outer cover and the inner cover. After the locking assembly is formed by the first locking part and the second locking part, the sealing part can further seal the gap between the outer cover and the inner cover, thereby effectively preventing the cover itself from causing air leakage. This allows the split cover to maintain good sealing performance after assembly without the need for additional sealing processes (such as applying sealing oil or adding sealing soft glue), thereby simplifying the structure and reducing production costs. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of a sealing cover according to the present invention; Figure 2 for Figure 1 A diagram from another perspective; Figure 3 for Figure 1 A half-section view; Figure 4 For the explosion of the sealed cover Figure 1 ; Figure 5 For the explosion of the sealed cover Figure 2 . Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] like Figures 1 to 5 As shown, this utility model provides a sealing cover, including an outer cover 1 and an inner cover 2. The outer cover 1 and the inner cover 2 are connected to form an air extraction hole 3 extending through their upper and lower sides. A one-way valve 31 is installed at the air extraction hole 3. When in use, this sealing cover uses a motor or an air pump installed at the one-way valve 31 to extract air through the air extraction hole 3, thereby creating a negative pressure state inside the tank.

[0019] To maintain a negative pressure inside the tank, this design also optimizes the fit of the cover itself. The outer cover 1 covers the outer periphery of the inner cover 2, and the outer cover 1 has a first inner cavity 101 with a downward opening. The inner cover 2 has a downwardly extending mounting portion 21, and the upper end of the inner cover 2 has a second inner cavity 201 with an upward opening. A sealing portion 4, a first locking portion 51 located around the sealing portion 4, and a second locking portion 52 located around the first locking portion 51 are provided between the first inner cavity 101 and the second inner cavity 201. This improves the assembly fit structure between the outer cover and the inner cover. After the first locking portion and the second locking portion form a locking assembly, it also ensures that the sealing portion can further seal the gap between the outer cover and the inner cover, thereby effectively preventing air leakage caused by the cover itself. This allows the split cover to maintain good sealing performance after assembly without the need for additional sealing processes (such as applying sealing oil or adding sealing soft glue), thus simplifying the structure and reducing production costs.

[0020] Furthermore, maintaining a negative pressure inside the tank ensures that the lid is pressed tightly by external air pressure, making it difficult to open directly and thus preventing accidental contact that could lead to air leakage.

[0021] In this design, the one-way valve 31 is preferably a one-way rubber stopper. It allows for one-way airflow, enabling it to work with an air pump for evacuation while preventing external gas from entering. This achieves a good seal on the evacuation port 3. The rubber stopper's main material properties are good elasticity and corrosion resistance, allowing it to fit tightly against the evacuation port. Furthermore, it is low in cost and replaceable.

[0022] In this embodiment of the invention, the sealing part 4 is disposed on the outer cover 1, and the lower end of the sealing part 4 is a sealing plane 41. The sealing plane 41 is tightly attached to the bottom of the second inner cavity 201 by the first locking part 51 and the second locking part 52. The use of the sealing plane 41 allows a tight-fitting sealing part to be formed, effectively sealing the spaces on both sides and blocking airflow between them, thereby preventing air leakage.

[0023] Specifically, in use, the mounting portion 21 extending from the bottom of the cap is used to install the bottle, and the space inside the bottle needs to be sealed. The vent is effectively sealed by a one-way valve 31. Because the cap is a split design, if the outer cap covers the outer perimeter of the inner cap, there will be gaps at the covering point. To address the issue of air leakage in these gaps, this design incorporates an internal sealing portion 4 to prevent gas from leaking to the outside, thus eliminating the leakage problem inherent in the cap's structure. Of course, when it is necessary to open the cap, simply pull out the one-way valve 31, and outside gas can enter the sealed container through the vent, eliminating the internal negative pressure. The cap can then be opened.

[0024] Of course, in order to further reduce the amount of gas entering the inner cavity from the gap, this solution also adds a sealing ring to the mounting part 21, which fits against the inner wall of the bottle after assembly to form a good sealing effect.

[0025] In this design, the inner cover 2 has a raised boss 22 in the middle, and the air extraction hole 3 is located on the boss 22. The sealing part 4 is recessed from the upper end face of the outer cover 1 and is located on the outer periphery of the boss 22, with a through hole for the boss 22 to extend out. Furthermore, the upper end face of the boss 22 is provided with a recessed mounting step, located outside the air extraction hole 3, and the mounting step is provided with a raised annular sealing rib 221. In conjunction with a one-way rubber stopper, during use, it is pressed against the one-way rubber stopper by an air pump, and the annular sealing rib 221 further enhances the sealing performance between the air extraction hole and the annular sealing rib 221, thereby ensuring efficient air extraction.

[0026] In this design, the outer periphery of the bottom of the second inner cavity 201 that mates with the sealing plane 41 is also provided with a positioning ring protrusion 202. The bottom surrounded by the positioning ring protrusion 202 is the inner wall that mates with the sealing plane 41. This can form different areas so that fine processing can be carried out in the corresponding areas during production and processing, thereby improving the sealing effect after mating.

[0027] In addition, the first locking part 51 is a first latch located at the positioning ring protrusion 202, and the outer periphery of the sealing part 4 is provided with a first fastening part 42 that engages with the first latch to fasten. This means that the first locking part 51 is close to the outer periphery of the sealing part 4, so that after the first locking part 51 is fastened, in addition to connecting the outer cover and the inner cover, it also ensures the sealing effect of the sealing part 4.

[0028] In this design, the second locking part 52 is a second latch located in the second inner cavity 201 and near the outer side of the inner cover 2. The first inner cavity 101 has a downwardly extending second fastening part 521 that engages with the second latch. This further enhances the connection between the outer cover and the inner cover. Moreover, the second locking part 52 is close to the outer periphery, which helps to reduce the gap between the peripheral components, thereby maintaining a sealing performance.

[0029] In this embodiment of the invention, multiple first and second latches are provided and evenly distributed along the circumference. Preferably, the first and second latches are each in groups of three, forming a ring-shaped distribution along the cover. Multiple points on the ring are used for fastening, ensuring a tight fit throughout the entire ring.

[0030] This utility model also provides a sealed container, including a bottle body, on which the above-mentioned sealing cap is installed, and the sealing cap is used for installation with an electric vacuum pump.

[0031] This utility model provides a sealing cover that improves the assembly and fitting structure between the outer cover and the inner cover. After the locking assembly is formed by the first locking part and the second locking part, the sealing part can further seal the gap between the outer cover and the inner cover, thereby effectively preventing the cover itself from causing air leakage. This allows the split cover to maintain good sealing performance after assembly without the need for additional sealing processes such as applying sealing oil or adding sealing soft glue, thus simplifying the structure and reducing production costs.

[0032] The foregoing has shown and described the basic principles and main features of this utility model, as well as its advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A sealing cover, characterized in that, It includes an outer cover (1) and an inner cover (2), the outer cover (1) and the inner cover (2) are connected to form an air extraction hole (3) that runs through its upper and lower sides, and a one-way valve (31) is installed at the air extraction hole (3). The outer cover (1) covers the outer periphery of the inner cover (2), and the outer cover (1) has a first inner cavity (101) with the opening facing downward. The inner cover (2) is provided with a downwardly extending mounting portion (21), and the upper end of the inner cover (2) is provided with an upwardly opening second inner cavity (201). A sealing portion (4), a first locking portion (51) and a second locking portion (52) are provided between the first inner cavity (101) and the second inner cavity (201).

2. A sealing cover according to claim 1, characterized in that, The sealing part (4) is provided on the outer cover (1), and the lower end of the sealing part (4) is a sealing plane (41), and the sealing plane (41) is tightly attached to the bottom of the second inner cavity (201) by the first locking part (51) and the second locking part (52).

3. A sealing cover according to claim 2, characterized in that, The inner cover (2) has an upwardly protruding boss (22) in the middle, the air extraction hole (3) is provided on the boss (22), the sealing part (4) is formed by recessing from the upper end face of the outer cover (1), and the sealing part (4) is located on the outer periphery of the boss (22) and has a through hole for the boss (22) to extend out.

4. A sealing cover according to claim 3, characterized in that, The outer periphery of the bottom of the second inner cavity (201) that mates with the sealing plane (41) is also provided with a positioning ring protrusion (202).

5. A sealing cover according to claim 4, characterized in that, The first locking part (51) is a first latch located at the positioning ring protrusion (202), and the outer periphery of the sealing part (4) is provided with a first fastening part (42) that cooperates with the first latch to fasten.

6. A sealing cover according to claim 5, characterized in that, The second locking part (52) is a second latch located in the second inner cavity (201) and close to the outer side of the inner cover (2). The first inner cavity (101) is provided with a second fastening part (521) that extends downward and engages with the second latch.

7. A sealing cover according to claim 6, characterized in that, The first and second latches are provided in multiples and are evenly distributed along the circumferential direction.

8. A sealing cover according to claim 3, characterized in that, The upper surface of the boss (22) is also provided with a recessed mounting step, which is located outside the air extraction hole (3), and the mounting step is provided with an upwardly protruding annular sealing rib (221).

9. A sealing cover according to claim 8, characterized in that, The one-way valve (31) is a one-way rubber stopper.

10. A sealed container, characterized in that, The device includes a bottle body, on which a sealing cap as described in any one of claims 1-9 is installed, the sealing cap being used for installation with an electric vacuum pump.

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