Beer can with secondary sealing function

Abstract

The utility model discloses a beer can with a secondary sealing function, belongs to the technical field of beer cans, and solves the technical problem that in the prior art, a bottle cap of the beer can easily leaks air, so that the cost is increased. The beer can comprises a beer can body, an inner gland and an outer screw cap, a first protruding ring structure is arranged on the edge of a top opening of the beer can body, and a second protruding ring structure which can abut against the first protruding ring structure in a sealed mode is arranged on the edge of the bottom of the top gland; the inner gland is composed of a shaping outer cover and a first sealing inner cover, the first sealing inner cover is buckled at the top opening of the beer can body through the shaping outer cover, the inner gland is integrally buckled on the upper surface of the first protruding circular ring structure, and a third protruding circular ring structure is arranged on the outer side edge of the inner gland. The third protruding circular ring structure can be clamped to the first protruding circular ring structure in a sealed mode, and the second protruding circular ring structure of the top gland abuts against the first protruding circular ring structure, so that the third protruding circular ring structure of the inner gland is connected between the second protruding circular ring structure and the first protruding circular ring structure in a sealed mode.

Description

Technical Field

[0001] This utility model relates to the field of beer can technology, specifically a beer can with a secondary sealing function. Background Technology

[0002] Currently, during transportation or sales, screw-top beer cans may lose their sealing effect due to active or passive torque on the cap. Even if the can is not completely opened, air leakage may occur, leading to problems such as beer spoilage inside the can.

[0003] Existing technology can cause air leakage during transportation or sales. Even if the container is not completely unsealed, it can lead to deterioration of the liquid inside, resulting in increased costs.

[0004] In addition, capped beer cans cannot be resealed after opening, leading to problems such as waste of the remaining beer inside. Utility Model Content

[0005] This invention addresses the shortcomings and deficiencies of existing technologies by providing a beer can with a cleverly designed structure that enhances synergy and effectively solves the problem of loosening caps leading to loss of sealing. It utilizes a screw cap for secondary sealing and preservation after opening, achieving simultaneous screw cap and pressure cap functions. This solves the problem of air leakage during use and meets the need for secondary sealing and preservation.

[0006] To achieve the above objectives, this utility model provides a beer can with a secondary sealing function, comprising a beer can body and a lid that is sealed to its top opening. The lid includes an inner pressure cap and an outer screw cap.

[0007] The external rotating cap includes an integral cap structure consisting of a top pressure cap and vertical rotating sidewalls;

[0008] The top opening edge of the beer can body is provided with a first protruding ring structure, and the bottom edge of the top cap is provided with a second protruding ring structure that can seal against the first protruding ring structure.

[0009] The inner pressure cover is pressed against the upper surface of the first protruding ring structure, and its outer edge is also provided with a third protruding ring structure that matches the first protruding ring structure. The third protruding ring structure can be sealed and snapped onto the first protruding ring structure. The third protruding ring structure of the inner pressure cover is sealed and connected between the two by the abutment of the second protruding ring structure and the first protruding ring structure of the top pressure cover.

[0010] Preferably, a second sealing soft cap is also connected to the outer edge of the bottom groove of the top cap;

[0011] The inner pressure cap consists of a shaped outer cap and a first sealing inner cap, and the first sealing inner cap is pressed against the opening at the top of the beer can body by the shaped outer cap.

[0012] Preferably, both the outer screw cap and the shaped outer cap are made of stretched aluminum; the first sealing inner cap and the second sealing soft cap are both made of soft material.

[0013] Preferably, the soft material is silicone; the thickness of both the first sealing inner cover and the second sealing soft cover is 2mm-3mm.

[0014] Preferably, the second protruding ring structure on the inner side of the outer cap protrudes downward as a whole, and the bottom surface of the second protruding ring structure is provided with an inwardly oriented groove.

[0015] The upper surface of the first protruding ring structure is planar, and its inner and outer edges are rounded with chamfers.

[0016] The inner and outer edges of the groove on the bottom surface of the second protruding ring structure abut against the inner and outer chamfered surfaces on the upper surface of the first protruding ring structure.

[0017] Preferably, the first protruding ring structure is a hook structure with the top opening of the beer can body protruding outward from its inner side wall. The outer side wall of the hook structure is vertically downward and fits against the inner side wall of the vertical rotating side wall of the outer cap.

[0018] Preferably, the vertical rotating sidewall of the outer screw cap includes an upper snap-fit ​​wall and a bottom internal threaded wall, and the inner diameter of the bottom internal threaded wall is larger than the inner diameter of the upper snap-fit ​​wall. The inner sidewall of the bottom internal threaded wall and the inner sidewall of the upper snap-fit ​​wall are connected by a transition surface.

[0019] The structure at the top opening of the beer can body matches the vertical rotating side wall structure of the outer screw cap. Specifically, the structure is as follows: the upper part is a vertical first side wall, and the top of the vertical first side wall is provided with an outwardly protruding hanging ear structure; the lower part is an external thread side wall, the outer diameter of the external thread side wall is larger than the outer diameter of the vertical first side wall, and the external thread side wall and the vertical first side wall are connected by an inclined slope transition. There is a gap between the bottom surface of the hanging ear structure and the external thread side wall.

[0020] The first sealing inner cover of the inner pressure cover is pressed against the upper surface of the first protruding ring structure by the shaped outer cover, and its outer edge covers the outer side of the lug structure of the first protruding ring structure.

[0021] Preferably, a limiting ring matching the inclined slope structure is provided on the inner side of the vertical rotating side wall of the outer screw cap, at the inner side wall of the transition surface between the upper pressing wall and the bottom internal threaded wall.

[0022] Preferably, the lower end of the external thread sidewall is a first support boss that connects to the top opening of the beer can body; the upper end of the external thread sidewall is provided with a second support boss that connects to the vertical first sidewall.

[0023] The outer sidewalls of the first and second support bosses at the upper and lower ends of the external thread sidewall are both vertical sidewall structures that match the inner diameter of the vertical rotating sidewall of the outer screw cap; the external thread sidewall located between the vertical sidewall structures at the upper and lower ends is provided with an external thread that matches the bottom internal thread wall structure of the vertical rotating sidewall.

[0024] Preferably, the outer side of the vertical first sidewall is provided with uniformly distributed vertical friction textures.

[0025] This invention provides a beer can with a secondary sealing function. It has the following beneficial effects:

[0026] This utility model of a beer can with a secondary sealing function has a clever structural design and synergistic effect. It effectively solves the problem that existing screw caps may loosen and lose their sealing effect. In addition, it uses a screw cap for secondary sealing and preservation after opening, so that both screw cap and pressure cap can be used at the same time, solving the problem of air leakage during use and meeting the need for secondary sealing and preservation. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this utility model;

[0028] Figure 2 for Figure 1 A schematic diagram of the structure of a partial view in the middle;

[0029] Figure 3 for Figure 2 A structural schematic diagram of the front view;

[0030] Figure 4 for Figure 3 A schematic diagram of the structure in the AA cross-sectional view;

[0031] Figure 5 for Figure 4 A structural schematic diagram of a partially enlarged view of section B;

[0032] Figure 6 for Figure 1 Schematic diagram of the structure of the inner and outer screw caps;

[0033] Figure 7 for Figure 6 A schematic diagram of the structure from the bottom view of the inner and outer screw caps;

[0034] Figure 8 for Figure 6 A schematic diagram of the structure of the front view of the inner and outer screw caps;

[0035] Figure 9 for Figure 8 A schematic diagram of the structure of the CC cross-section.

[0036] In the diagram: 1. Beer can body; 101. First vertical side wall; 102. External threaded side wall; 103. Inclined slope; 104. First support boss; 105. Second support boss; 2. Outer cap; 201. Top cap; 202. Vertical rotating side wall; 2021. Upper snap-fit ​​wall; 2022. Bottom internal threaded wall; 2023. Transition surface; 3. Inner cap; 4. First protruding ring structure; 5. Second protruding ring structure; 6. Third protruding ring structure; 7. Groove. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] Please see Figure 1-9 This utility model provides a technical solution:

[0040] like Figures 1-5 As shown, the beer can with secondary sealing function provided by this utility model includes a beer can body 1 and a lid that is sealed to its top opening. The lid includes an inner pressure cap 3 and an outer screw cap 2. The outer screw cap 2 includes an integrated lid structure composed of a top pressure cap 201 and a vertical rotating side wall 202.

[0041] The beer can body 1 has a first protruding ring structure 4 at the top opening edge, and a second protruding ring structure 5 at the bottom edge of the top cap 201 that can seal against the first protruding ring structure 4. The inner cap 3 is pressed against the upper surface of the first protruding ring structure 4, and its outer edge also has a third protruding ring structure 6 that matches the structure of the first protruding ring structure 4. The third protruding ring structure 6 can be sealably engaged with the first protruding ring structure 4. The third protruding ring structure 6 of the inner cap 3 is sealed between the two structures by the contact between the second protruding ring structure 5 and the first protruding ring structure 4 of the top cap 201. A second sealing soft cap is also connected to the outer edge of the bottom groove 7 of the top cap 201.

[0042] The inner pressure cap 3 consists of a shaped outer cap and a first sealing inner cap, with the first sealing inner cap fastened to the top opening of the beer can body 1 by the shaped outer cap. Both the outer screw cap 2 and the shaped outer cap are made of stretched aluminum; both the first sealing inner cap and the second sealing soft cap are made of soft material, specifically silicone; the thickness of both the first sealing inner cap and the second sealing soft cap is 2mm-3mm.

[0043] The second protruding ring structure 5 on the inner side of the outer cap 2 protrudes downwards, and its bottom surface has an inwardly recessed groove 7. The upper surface of the first protruding ring structure 4 is flat, and its inner and outer edges have rounded chamfers. The inner and outer edges of the groove 7 on the bottom surface of the second protruding ring structure 5 abut against the chamfered surfaces on the upper surface of the first protruding ring structure 4. This structure can both seal the inner cap 3 between the groove 7 of the second protruding ring structure 5 and the upper surface of the first protruding ring structure 4, and also ensure a sealed connection between the groove 7 of the second protruding ring structure 5 and the upper surface of the first protruding ring structure 4 when the inner cap 3 is removed. The structural design is simple and ingenious, with low manufacturing cost, effectively solving the problem of loosening of existing caps leading to loss of sealing effect, while significantly improving production efficiency and meeting the needs of actual production.

[0044] The above structural design ensures that the inner pressure cap 3 is sealed to the top opening of the beer can body 1 via the outer screw cap 2, achieving an effective seal and preventing air leakage during transportation and storage. This effectively solves the problem of loosening of the existing outer screw cap 2, which can lead to loss of sealing. Furthermore, the design incorporates a second sealing soft cap at the outer edge of the bottom groove 7 of the second protruding ring structure 5 of the outer screw cap 2, which seals against the chamfered surfaces on both the inner and outer sides of the upper surface of the first protruding ring structure 4. Even after removing the inner pressure cap 3 using an easy-pull connection, the can still be resealed using the outer screw cap 2, further ensuring the beer's actual storage needs and broad applicability.

[0045] The beer can with secondary sealing function provided by this utility model has a first protruding ring structure 4 which is a hanging ear structure with the top opening of the beer can body 1 protruding outward from its inner side wall. The outer side wall of the hanging ear structure is vertically downward and fits against the inner side wall of the vertical rotating side wall 202 of the outer screw cap 2.

[0046] like Figures 6-9 As shown, the vertical rotating sidewall 202 of the outer cap 2 includes an upper clamping wall 2021 and a bottom internal threaded wall 2022. The inner diameter of the bottom internal threaded wall 2022 is larger than the inner diameter of the upper clamping wall 2021. The inner sidewall of the bottom internal threaded wall 2022 and the inner sidewall of the upper clamping wall 2021 are connected by a transition surface 2023, which facilitates injection molding production and further ensures the stability of the overall structure.

[0047] The structure at the top opening of the beer can body 1 matches the structure of the vertical rotating side wall 202 of the outer screw cap 2. Specifically, its structure is as follows: the upper part is a vertical first side wall 101, and the top of the vertical first side wall 101 is provided with an outwardly protruding hanging ear structure; the lower part is an external thread side wall 102, the outer diameter of the external thread side wall 102 is larger than the outer diameter of the vertical first side wall 101, and the external thread side wall 102 and the vertical first side wall 101 are connected by an inclined slope 103. There is a gap between the bottom surface of the hanging ear structure and the external thread side wall 102; the first sealing inner cover of the inner pressure cover 3 is pressed onto the upper surface of the first protruding ring structure 4 by the shaped outer cover, and its outer edge covers the outside of the hanging ear structure of the first protruding ring structure 4. This structural design allows the inner pressure cover 3 to be effectively and securely sealed between the groove 7 of the second protruding ring structure 5 of the outer screw cap 2 and the upper surface of the first protruding ring structure 4, further ensuring the effective connection of the two seals, while significantly reducing the processing and installation costs.

[0048] Located inside the vertical rotating side wall 202 of the outer cap 2, a limiting ring matching the structure of the inclined surface 103 is also provided at the inner side wall of the transition surface 2023 between the upper clamping wall 2021 and the bottom internal threaded wall 2022. This further ensures that the outer cap 2 is rotated into place and prevents excessive squeezing that could damage the inner cap 3.

[0049] The lower end of the external threaded sidewall 102 is a first support boss 104 that connects to the top opening of the beer can body 1; the upper end of the external threaded sidewall 102 is a second support boss 105 that connects to the vertical first sidewall 101; the outer walls of the first support boss 104 and the second support boss 105 at both ends of the external threaded sidewall 102 are vertical sidewall structures that match the inner diameter of the vertical rotating sidewall 202 of the outer screw cap 2; the external threaded sidewall 102 located between the vertical sidewall structures at both ends is provided with an external thread that matches the structure of the bottom internal threaded wall 2022 of the vertical rotating sidewall 202. This structural design ensures the stability of the connection structure between the inner pressure cap 3 and the outer screw cap 2, further preventing relative loosening during use and ensuring continuous and effective sealing.

[0050] The outer side wall 101 of the outer screw cap 2 is provided with evenly distributed vertical friction grooves, which facilitates the rotation and removal of the outer screw cap 2 and the tightening and sealing.

[0051] A second sealing soft cover is also connected to the outer edge of the bottom groove 7 of the top cover 201, which further improves the sealing effect of the inner cover 3 when it is removed, and the inner cover 3 seals between the groove 7 of the second protruding ring structure 5 and the upper surface of the first protruding ring structure 4.

[0052] During the production process, the top opening structure of the beer can body 1, the inner pressure cap 3, and the outer screw cap 2 can all be formed in one piece. The installation process only requires pressing the third protruding ring structure 6 of the inner pressure cap 3 onto the upper surface of the first protruding ring structure 4, and then rotating the outer screw cap 2 to press the second protruding ring structure 5 at the bottom of the top pressure cap 201 of the outer screw cap 2 against the third protruding ring structure 6. Finally, the third protruding ring structure 6 of the inner pressure cap 3 is pressed between the upper surfaces of the second protruding ring structure 5 and the first protruding ring structure 4, with two seals. The screw cap and the pressure cap exist simultaneously, achieving an effective sealing connection to the top opening of the beer can body 1. The inner pressure cap 3 and its connecting structure effectively solve the problem of air leakage.

[0053] After removing the outer cap 2 from the top opening of the beer can body 1 by rotating it, the inner pressure cap 3 can be removed, making it easier to pour out the liquid inside the beer can body 1. When the top opening of the beer can body 1 is opened, the outer cap 2 can be rotated in the opposite direction to tighten it back onto the top opening of the beer can body 1. The upper surfaces of the second protruding ring structure 5 and the first protruding ring structure 4 are pressed together to form a seal, achieving a secondary effective sealing connection for the top opening of the beer can body 1 after the cap is opened. The outer cap 2 and its connecting structure further solve the problem of secondary sealing and preservation.

[0054] In summary, the beer can with secondary sealing function of this utility model has a clever structural design and synergistic effect, effectively solving the problem that the existing screw cap may loosen and lose its sealing effect. In addition, the screw cap is used for secondary sealing and preservation after opening, realizing the simultaneous existence of screw cap and pressure cap, solving the problem of air leakage during use and meeting the need for secondary sealing and preservation.

[0055] The above are merely embodiments of this utility model. For example, the inner pressure cap 3 is made of a soft material. Changing the soft material and the overall material of the cap can both achieve the beer can with secondary sealing function of this utility model.

[0056] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A beer can with a secondary sealing function, characterized in that, It includes a beer can body (1) and a lid that is sealed to its top opening, the lid including an inner pressure cap (3) and an outer screw cap (2). The outer rotating cap (2) includes an integral cap structure consisting of a top pressure cap (201) and a vertical rotating sidewall (202); The beer can body (1) has a first protruding ring structure (4) at the top opening edge, and the top cover (201) has a second protruding ring structure (5) at the bottom edge that can seal against the first protruding ring structure (4); a second sealing soft cover is also connected to the outer edge of the groove (7) at the bottom of the top cover (201). The inner pressure cap (3) consists of a shaped outer cap and a first sealing inner cap. The first sealing inner cap is pressed against the top opening of the beer can body (1) by the shaped outer cap. The inner pressure cap (3) is pressed against the upper surface of the first protruding ring structure (4) as a whole, and its outer edge is also provided with a third protruding ring structure (6) that matches the structure of the first protruding ring structure (4). The third protruding ring structure (6) can be sealed and snapped onto the first protruding ring structure (4). The third protruding ring structure (6) of the inner pressure cap (3) is sealed and connected between the two by the second protruding ring structure (5) of the top pressure cap (201) and the first protruding ring structure (4).

2. A beer can with a secondary sealing function according to claim 1, characterized in that, The second protruding ring structure (5) on the inner side of the outer screw cap (2) protrudes downward as a whole, and the bottom surface of the second protruding ring structure (5) is provided with an inwardly arranged groove (7). The upper surface of the first protruding ring structure (4) is a planar structure, and the inner and outer edges of its upper surface are provided with rounded chamfers. The inner and outer edges of the groove (7) at the bottom of the second protruding ring structure (5) abut against the inner and outer chamfered surfaces of the upper surface of the first protruding ring structure (4).

3. A beer can with a secondary sealing function according to claim 2, characterized in that, The first protruding ring structure (4) is a hook structure with the top opening of the beer can body (1) protruding outward from its inner side wall. The outer side wall of the hook structure is vertically downward and fits against the inner side wall of the vertical rotating side wall (202) of the outer screw cap (2).

4. A beer can with a secondary sealing function according to claim 3, characterized in that, The vertical rotating sidewall (202) of the outer rotating cap (2) includes an upper snap-fit ​​wall (2021) and a bottom internal threaded wall (2022), and the inner diameter of the bottom internal threaded wall (2022) is larger than the inner diameter of the upper snap-fit ​​wall (2021). The inner sidewall of the bottom internal threaded wall (2022) and the inner sidewall of the upper snap-fit ​​wall (2021) are connected by a transition surface (2023). The structure at the top opening of the beer can body (1) matches the structure of the vertical rotating sidewall (202) of the outer screw cap (2). Specifically, the structure is as follows: the upper part is a vertical first sidewall (101), and the top of the vertical first sidewall (101) is provided with an outwardly protruding hanging ear structure; the lower part is an external thread sidewall (102), the outer diameter of the external thread sidewall (102) is larger than the outer diameter of the vertical first sidewall (101), and the external thread sidewall (102) and the vertical first sidewall (101) are connected by an inclined slope (103). There is a gap between the bottom surface of the hanging ear structure and the external thread sidewall (102). The first sealing inner cover of the inner pressure cover (3) is pressed onto the upper surface of the first protruding ring structure (4) by the shaping outer cover, and its outer edge covers the outer side of the lug structure of the first protruding ring structure (4).

5. A beer can with a secondary sealing function according to claim 4, characterized in that, Located inside the vertical rotating sidewall (202) of the outer rotating cover (2), a limiting ring matching the inclined surface (103) structure is also provided at the inner sidewall of the transition surface (2023) between the upper pressing wall (2021) and the bottom internal thread wall (2022).

6. A beer can with a secondary sealing function according to claim 4, characterized in that, The lower end of the external thread sidewall (102) is a first support boss (104) that is connected to the top opening of the beer can body (1); the upper end of the external thread sidewall (102) is provided with a second support boss (105) that is connected to the vertical first sidewall (101). The outer sidewalls of the first support boss (104) and the second support boss (105) at the upper and lower ends of the external thread sidewall (102) are all vertical sidewall structures that match the inner diameter of the vertical rotating sidewall (202) of the outer screw cap (2); the external thread sidewall (102) located between the vertical sidewall structures at the upper and lower ends is provided with an external thread that matches the bottom internal thread wall (2022) structure of the vertical rotating sidewall (202).

7. A beer can with a secondary sealing function according to claim 6, characterized in that, The outer side of the vertical first sidewall (101) is provided with uniformly distributed vertical friction patterns.

8. A beer can with a secondary sealing function according to claim 3, characterized in that, The outer rotating cap (2) and the shaped outer cap are both made of stretched aluminum; the first sealing inner cap and the second sealing soft cap are both made of soft material.

9. A beer can with a secondary sealing function according to claim 8, characterized in that, The soft material is silicone; the thickness of the first sealing inner cover and the second sealing soft cover is 2mm-3mm.

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