Self-sealing storage cover body assembly compatible with multiple bottle types
By designing a self-sealing storage cap assembly compatible with multiple bottle types, the problem of mismatched bottle openings in existing technologies has been solved, achieving universality and convenient use for various bottle openings, reducing production and inventory costs, and improving user experience and environmental benefits.
Patent Information
- Application Number
- CN202520427634.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-11
- Publication Date
- 2026-03-03
- Estimated Expiration
- 2035-03-11
AI Technical Summary
Existing self-sealing storage caps are usually designed to a specific size, making them unsuitable for bottles of various sizes. This limits their application range, increases production and inventory costs, and hinders widespread adoption.
A self-sealing storage cap assembly compatible with multiple bottle types was designed, including a cap base and a material cylinder. By setting multiple threaded cylindrical sections and flared sections on the mounting sleeve, threaded connections with bottle mouths of different specifications can be achieved. The operation is simplified through a linkage structure and a tearing structure, which can adapt to a variety of bottle mouth sizes.
It achieves universality for various standard bottle openings, reduces production and inventory costs, improves user experience, reduces the number of discarded bottle caps, and promotes environmental protection and economic benefits.
Smart Images

Figure CN223962541U_ABST
Abstract
Description
Technical Field
[0001] This utility model specifically relates to a self-sealing storage cap assembly compatible with multiple bottle types. Background Technology
[0002] Most beverage bottles on the market have caps, allowing consumers to simply unscrew the cap and drink. However, some beverages require additives or other condiments, leading to the development of self-sealing caps. These caps typically have pre-placed additives or other materials inside the cap's cavity. Consumers can then mix the additives with the solution to create their own beverage after opening the cap. These pre-sealed caps are already commercially available as standalone products. Consumers can simply attach the cap to the mouth of a mineral water bottle or other beverage bottle to obtain their mixed drinks, making it more convenient and versatile. This type of cap structure can be referenced in the patent application previously filed by the present invention, number CN202322835761.6, entitled "A Separable Bottle Cap Convenient Unsealing Structure".
[0003] However, existing storage bottle caps are usually designed to a specific size and cannot be used universally on bottles of various diameters. Common mineral water bottles or beverage bottles are based on international standards or industry-standard designs, typically with standard bottle necks of 28mm and 38mm. After purchasing the aforementioned self-sealing storage bottle cap, it is necessary to purchase a standard beverage bottle with a matching diameter separately. This limits their application range, increases production and inventory costs, and causes significant obstacles to use and waste of resources. Therefore, this type of product has extremely poor adaptability and is not conducive to promotion.
[0004] This utility model was developed precisely because of the aforementioned shortcomings. Utility Model Content
[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a multi-bottle compatible self-sealing storage cap assembly that is versatile, adaptable, and more convenient to use.
[0006] This utility model is achieved through the following technical solution:
[0007] This utility model provides a self-sealing storage cap assembly compatible with multiple bottle types, including a cap seat and a material cylinder. The cap seat and the material cylinder form a storage cavity for storing materials. The cap seat and the material cylinder are movably connected, and a linkage structure is provided between them to open the storage cavity when the material cylinder rotates. The cap seat includes a mounting sleeve for connecting to the bottle mouth of the bottle body. The mounting sleeve has at least a first threaded section and a second threaded section for threaded connection with bottle mouths of different sizes.
[0008] In the multi-bottle compatible self-sealing storage cap assembly described above, the second screw-in section is located below the first screw-in section, and the diameter of the second screw-in section is larger than that of the first screw-in section.
[0009] As described above, the multi-bottle compatible self-sealing storage cap assembly, the mounting sleeve also has a flared section located below the second screw-in section and having a larger diameter than the second screw-in section.
[0010] As described above, in the multi-bottle compatible self-sealing storage cap assembly, the mounting sleeve is provided with a tearing structure located between the first and second threaded sections for separating the second threaded section.
[0011] As described above, in the multi-bottle compatible self-sealing storage cap assembly, the tear structure includes a tear ring arranged circumferentially, and the tear ring is connected to the first screw-in cylinder section and the tear ring is connected to the second screw-in cylinder section through thin walls.
[0012] As described above, in the multi-bottle compatible self-sealing storage cap assembly, the mounting sleeve further has a third threaded section located below the second threaded section and used for connection with the bottle neck, the diameter of the third threaded section being larger than the diameter of the second threaded section.
[0013] As described above, the multi-bottle compatible self-sealing storage cap assembly has internal threads on the inner sides of the first and second screw-in sections for matching 24mm, 28mm, 29mm, or 38mm bottle necks.
[0014] As described above, the multi-bottle compatible self-sealing storage cap assembly includes an outer sleeve connected to a mounting sleeve. When the cap is connected to the bottle, the outer sleeve is located at the corresponding position inside the bottle opening. The material cylinder includes an inner sleeve with an open bottom that can move up and down relative to the outer sleeve. The bottom of the outer sleeve is provided with a sealing part that seals the bottom of the inner sleeve when the inner sleeve moves downward. When the inner sleeve moves downward, the inner sleeve and the sealing structure form the storage cavity. The bottom of the outer sleeve is provided with a discharge port so that the material in the storage cavity can leak out from the discharge port when the inner sleeve moves upward. An outer assembly cylinder is connected above the outer sleeve, and an inner assembly cylinder is connected above the inner sleeve. The linkage structure includes a strip groove that is inclined or partially inclined on the side wall of the inner assembly cylinder. The linkage structure also includes a limiting boss that is provided on the inner side wall of the outer assembly cylinder and extends into the strip groove.
[0015] As described above, the multi-bottle compatible self-sealing storage cap assembly has a guide groove on the inner assembly cylinder side wall for the limiting boss to slide into the strip groove. The lower end of the guide groove is open, so that the outer ring cylinder can cover the top of the outer sleeve from top to bottom. The guide groove has an inclined first guide slope on the side near the strip groove, and the top of the limiting boss has a second guide slope that matches the inclination of the strip groove.
[0016] As described above, the multi-bottle compatible self-sealing storage cap assembly comprises a cylindrical body that runs vertically through the cylinder and a top cap that seals the top of the cylinder.
[0017] Compared with the prior art, the present invention has the following advantages:
[0018] 1. Multi-bottle compatibility: The technical solution provides a self-sealing storage cap assembly that can adapt to various standard bottle neck sizes (such as 24mm, 28mm, 29mm, and 38mm). By designing a first and second threaded sleeve section with different internal thread segments, it supports most common bottle neck sizes on the market, greatly improving the product's versatility and adaptability. This multi-functional design not only facilitates user operation but also reduces waste caused by bottle neck mismatches, thus benefiting environmental protection.
[0019] 2. Simplified and Compact Structure: The storage cover adopts a continuous cylindrical structure and can be integrally molded during actual assembly, eliminating the need for an additional top cover. This greatly simplifies the production process and reduces production difficulty and costs. Simultaneously, the more compact structure ensures better sealing performance, guaranteeing that materials will not leak or be contaminated during storage.
[0020] 3. Convenient Operation and User Experience: A linkage structure is installed between the cover and the material cylinder, allowing users to open and close the storage chamber simply by turning the material cylinder, making operation simple and convenient. Furthermore, detailed designs such as guide grooves and guide ramps ensure smoother installation between the material cylinder and the cover, enhancing overall user comfort and satisfaction.
[0021] 4. Economic Benefits and Environmental Contributions: The design concept of a single product meeting multiple needs not only reduces the complexity and cost of inventory management but also further reduces manufacturing costs by reducing the variety of products, thereby improving economic efficiency. More importantly, it reduces the number of discarded bottle caps due to mismatched bottle neck sizes, contributing to green production and sustainable development. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the cover assembly in use according to Embodiment 1 of this utility model;
[0023] Figure 2This is a cross-sectional schematic diagram of the cover assembly according to Embodiment 1 of this utility model;
[0024] Figure 3 This is an exploded view of the cover assembly according to Embodiment 1 of this utility model. Figure 1 ;
[0025] Figure 4 This is an exploded view of the cover assembly according to Embodiment 1 of this utility model. Figure 2 ;
[0026] Figure 5 This is a cross-sectional schematic diagram of the cover assembly according to Embodiment 2 of this utility model;
[0027] Figure 6 This is a schematic diagram of the cover of Embodiment 3 of this utility model;
[0028] Figure 7 This is a cross-sectional schematic diagram of the cover of Embodiment 3 of this utility model;
[0029] Figure 8 This is a schematic diagram of the cover of Embodiment 4 of this utility model;
[0030] Figure 9 This is a cross-sectional schematic diagram of the cover of Embodiment 4 of this utility model. Detailed Implementation
[0031] The utility model will be further described below with reference to the accompanying drawings:
[0032] The orientations described in this utility model specification, such as "up," "down," "left," "right," "front," and "back," are based on the orientations in the accompanying drawings and are intended to facilitate the description of the relationships between the various components. They do not indicate the unique or absolute positional relationships between the various components, but are merely one embodiment of the utility model and are not a limitation on its implementation.
[0033] Example 1
[0034] This embodiment introduces a multi-bottle compatible self-sealing storage cap assembly. This storage cap includes a cap base 1 and a material cylinder 2. The material cylinder 2 consists of a vertically continuous cylindrical body 2a and a top cap 2b that seals the top of the cylindrical body 2a. The material cylinder 2 is also a one-piece molded structure, as its lower end opening can also be used for filling materials. Figure 1 As shown, in this embodiment, this type of storage cap assembly is mainly used on standard bottle necks A2 with a diameter of 28mm and A1 with a diameter of 38mm. Of course, the size can also be adjusted appropriately to accommodate a small number of bottle necks with a diameter of 24mm or 29mm. In detail, as... Figures 2 to 4As shown, the device includes a cap seat 1 and a material cylinder 2, which together form a storage cavity 100 for storing materials. The cap seat 1 and the material cylinder 2 are movably connected, and a linkage structure 3 is provided between them to open the storage cavity 100 when the material cylinder 2 rotates. The cap seat 1 includes a mounting sleeve 11 for connecting to the bottle neck A of the bottle body. The mounting sleeve 11 has at least a first threaded section 111 and a second threaded section 112 for threaded connection with bottle necks of different sizes. Both sections have a connection point on their inner sides to the bottle neck. In this embodiment, the second threaded sleeve section 112 is located below the first threaded sleeve section 111, and the diameter of the second threaded sleeve section 112 is larger than that of the first threaded sleeve section 111. The first threaded sleeve section 111 is designed to match the thread structure of a 28mm diameter standard bottle neck, while the second threaded sleeve section 112 is designed to match the thread structure of a 38mm diameter standard bottle neck. This allows the cap assembly to be installed on two different sizes of mineral water or beverage bottles. This makes the cap assembly more adaptable, easily adapting to most common bottle neck sizes on the market, reducing the need for users to use caps of different sizes; a single product meets multiple needs, reducing inventory costs and complexity; by reducing the variety of products, manufacturing costs are reduced, improving economic efficiency; and the number of discarded bottle caps due to incompatibility is reduced, contributing to environmental protection.
[0035] In detail, such as Figures 2 to 4As shown, the cap seat 1 also includes an outer sleeve 12 connected to the mounting sleeve 11. When the cap seat 1 is connected to the bottle body, the outer sleeve 12 is located at the position corresponding to the inner side of the bottle mouth A. The material cylinder 2 includes an inner sleeve 21 with an open bottom that can move up and down relative to the outer sleeve 12. The bottom of the outer sleeve 12 is provided with a sealing part 121 that seals the bottom of the inner sleeve 21 when the inner sleeve 21 moves downward. When the inner sleeve 21 moves downward, the inner sleeve 21 and the sealing structure form the material storage cavity 100. The outer sleeve 12 has a discharge port 122 at its bottom, allowing material in the storage chamber 100 to leak out from the discharge port 122 when the inner sleeve 21 moves upward. An outer assembly sleeve 13 is connected above the outer sleeve 12, and an inner assembly sleeve 22 is connected above the inner sleeve 21. The linkage structure 3 includes a strip groove 221 on the side wall of the inner assembly sleeve 22, which is inclined or partially inclined. The linkage structure 3 also includes a limiting boss 131 on the inner side wall of the outer assembly sleeve 13, extending into the strip groove 221. When the product is first used, the material cylinder 2 is twisted, causing it to rise relative to the cap 1. This releases the lower end of the inner sleeve 21, allowing material to leak out from the discharge port 122 at the bottom of the outer sleeve 12 and enter the bottle. This allows the material to mix with the beverage in the bottle, achieving the function of dispensing, extending the storage time, and providing users with more diverse drinking options. In this embodiment, the material cylinder 2 is composed of a cylindrical body 2a that runs vertically through the cylinder and a top cover 2b that seals the top of the cylindrical body 2a. In the actual production and assembly process, the material cylinder 2 is also an integrally formed structure. Since the lower end of the cylindrical body 2a can also be filled with materials, the material cylinder 2 is inverted, and then material B is filled from the bottom of the inner sleeve 21 of the material cylinder 2. The cover seat 1 is also inverted and then connected to the material cylinder 2. Thus, the structure of adding a cover to the top of the material cylinder 2 can be eliminated through the above structure, which greatly simplifies the structure, makes it more compact, makes the sealing performance easier to control, and greatly reduces the production difficulty and production cost.
[0036] As a preferred option, such as Figure 2 and Figure 4 As shown, the inner assembly cylinder 22 is also provided with a guide groove 222 on its side wall for the limiting boss 131 to slide into the strip groove 221. The lower end of the guide groove 222 is open, so that the outer ring cylinder can cover the top of the outer sleeve 12 from top to bottom. The guide groove 222 is provided with an inclined first guide slope 223 on the side near the strip groove 221. The top of the limiting boss 131 is provided with a second guide slope 132 that is inclined in the opposite direction to the strip groove 221. In this way, when the material cylinder 2 and the cover seat 1 are installed and connected, the limiting boss 131 slides along the guide groove 222 and slides into the strip groove 221 through the first guide slope 223, making the installation more convenient. The second guide slope 132 can make the limiting boss 131 slide more smoothly in the strip groove 221.
[0037] Example 2
[0038] This embodiment introduces a self-sealing storage cap assembly compatible with multiple bottle types, such as... Figure 5 As shown, the difference between this embodiment and the first embodiment is that the mounting sleeve 11 is also provided with a flared section 113 located below the second screw section 112 and with a larger diameter than the second screw section 112, which makes the connection between the product and the beverage bottle more compatible. The flared section 113 can cover some connection structures and improve the appearance.
[0039] Example 3
[0040] This embodiment introduces a self-sealing storage cap assembly compatible with multiple bottle types, such as... Figure 6 and Figure 7 As shown, the difference between this embodiment and Embodiment 1 is that the mounting sleeve 11 is provided with a tearing structure located between the first threaded section 111 and the second threaded section 112 and used to separate the second threaded section 112.
[0041] Specifically, such as Figure 6 and Figure 7 As shown, the tearing structure includes a tear ring 114 arranged circumferentially. The tear ring 114 is connected to the first threaded cylinder section 111 and the tear ring 114 is connected to the second threaded cylinder section 112 through thin walls. A handle 116 for hand gripping can be provided on the tear ring 114. By tearing the tear ring 114, the second threaded cylinder section 112 can be separated from the mounting sleeve 11, which makes it more convenient to use on small-diameter bottles and avoids interference with the bottle shape or structure.
[0042] Example 4
[0043] This embodiment introduces a self-sealing storage cap assembly compatible with multiple bottle types, such as... Figure 6 and Figure 9 As shown, the mounting sleeve 11 also has a third screw-in section 115 located below the second screw-in section 112 and used for connection with the bottle neck. The diameter of the third screw-in section 115 is larger than that of the second screw-in section 112, so that the cap assembly can be adapted to three or more bottle sizes, such as the less common 24mm or 29mm bottle neck as described in Embodiment 1. For example, the first screw-in section 111 is adapted to the 24mm bottle neck, the second screw-in section 112 is adapted to the 29mm bottle neck, and the third screw-in section 115 is adapted to the 28mm bottle neck, or other combinations are also possible.
[0044] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.
Claims
1. A multi-bottle type compatible self-sealing storage cap assembly, characterized in that: The application relates to a cover seat (1) and a cartridge (2), a storage cavity (100) for storing materials is formed between the cover seat (1) and the cartridge (2), the cover seat (1) and the cartridge (2) are movably connected, and a linkage structure (3) is arranged between the cover seat (1) and the cartridge (2) and is used for opening the storage cavity (100) when the cartridge (2) rotates, the cover seat (1) comprises a mounting sleeve (11) used for being connected to a bottle mouth (A) of a bottle body, and the mounting sleeve (11) is provided with at least a first screwing sleeve section (111) and a second screwing sleeve section (112) used for being screwed with bottle mouths of different specifications.
2. The multi-bottle compatible self-sealing reservoir cap assembly of claim 1, wherein: The second screwing sleeve section (112) is arranged below the first screwing sleeve section (111), and the caliber of the second screwing sleeve section (112) is larger than that of the first screwing sleeve section (111).
3. The multi-bottle compatible self-sealing reservoir cap assembly of claim 2, wherein: The mounting sleeve (11) is further provided with an expanding section (113) arranged below the second screwing sleeve section (112) and having a caliber larger than that of the second screwing sleeve section (112).
4. The multi-bottle compatible self-sealing reservoir cap assembly of claim 2, wherein: The mounting sleeve (11) is provided with a tearing structure arranged between the first screwing sleeve section (111) and the second screwing sleeve section (112) and used for separating the second screwing sleeve section (112).
5. The multi-bottle compatible self-sealing reservoir cap assembly of claim 4, wherein: The tearing structure comprises a tearing ring (114) arranged in a circumferential direction, and the tearing ring (114) is connected to the first screwing sleeve section (111) and the second screwing sleeve section (112) through thin walls.
6. The multi-bottle compatible self-sealing reservoir cap assembly of claim 2, wherein: The mounting sleeve (11) is further provided with a third screwing sleeve section (115) arranged below the second screwing sleeve section (112) and used for being connected to the bottle mouth, and the caliber of the third screwing sleeve section (115) is larger than that of the second screwing sleeve section (112).
7. The multi-bottle compatible self-sealing reservoir cap assembly of claim 2, wherein: The first screwing sleeve section (111) and the second screwing sleeve section (112) are provided with internal threads inside and are matched with 24mm-caliber bottle mouths, 28mm-caliber bottle mouths, 29mm-caliber bottle mouths or 38mm-caliber bottle mouths.
8. The multi-bottle compatible self-sealing reservoir cap assembly of claim 1, wherein: The cover seat (1) further comprises an outer sleeve (12) connected with the mounting sleeve (11), which is located at a corresponding position inside the bottle mouth (A) when the cover seat (1) is connected with the bottle body, the material cylinder (2) comprises an inner sleeve (21) which is open at the bottom and can move up and down relative to the outer sleeve (12), the bottom of the outer sleeve (12) is provided with a cover part (121) which covers the bottom of the inner sleeve (21) when the inner sleeve (21) moves downward, the inner sleeve (21) and the cover structure form the storage cavity (100) when the inner sleeve (21) moves downward, the bottom of the outer sleeve (12) is provided with a discharge port (122) so that the material in the storage cavity (100) can leak out from the discharge port (122) when the inner sleeve (21) moves upward, the outer sleeve (12) is connected with an outer assembly cylinder (13) above, the inner sleeve (21) is connected with an inner assembly cylinder (22) above, the linkage structure (3) comprises a strip-shaped groove (221) which is arranged on the side wall of the inner assembly cylinder (22) and is arranged obliquely or partially obliquely, the linkage structure (3) further comprises a limiting boss (131) which is arranged on the inner side wall of the outer assembly cylinder (13) and extends into the strip-shaped groove (221).
9. The multi-bottle compatible self-sealing reservoir cap assembly of claim 8, wherein: The side wall of the inner assembly cylinder (22) is further provided with a guide groove (222) for the limiting boss (131) to slide into the strip-shaped groove (221), the lower end of the guide groove (222) is open, so that the outer ring cylinder can be covered on the top of the outer sleeve (12) from top to bottom, and the guide groove (222) is provided with an inclined first guide slope (223) on the side close to the strip-shaped groove (221), the top of the limiting boss (131) is provided with a second guide slope (132) which is reversely matched with the inclination of the strip-shaped groove (221).
10. The multi-bottle compatible self-sealing reservoir cap assembly of claim 1, wherein: The material cylinder (2) is composed of a cylinder body (2a) which penetrates from top to bottom and a top cover (2b) which covers the top of the cylinder body (2a).
Citation Information
Patent Citations
Separating type bottle cap convenient unsealing structure
CN221915509U