Combined bottle cap
By using a modular bottle cap design, and utilizing the retaining ring and sealing ring structure of the inner and outer caps, the problem of poor sealing of existing bottle caps is solved, achieving a highly efficient sealing effect. It is suitable for various bottle types and reduces production costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI DINGHONG PACKAGING CO LTD
- Filing Date
- 2025-05-09
- Publication Date
- 2026-04-28
AI Technical Summary
Existing bottle caps are prone to liquid leakage at the connection between the bottle opening and the bottle body, especially for substances with high sealing requirements such as oily liquids, where existing bottle caps cannot effectively seal.
A modular bottle cap was designed, comprising an outer cap and an inner cap. The outer cap consists of a top cap body and a ring cap body. The inner cap is connected to the outer cap by a retaining ring. A sealing ring and a retaining strip are provided at the contact point between the inner cap and the bottle mouth to achieve multiple seals. The inner cap is deformable to enhance the sealing effect.
It significantly improves the sealing performance of bottle caps, is suitable for bottles with different sealing requirements, reduces production costs, and requires no additional equipment modifications.
Smart Images
Figure CN224171522U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bottle cap technology, specifically to a combined bottle cap. Background Technology
[0002] Bottle caps have a wide range of uses and are ubiquitous in modern life. They are used to seal mineral water bottles and also to seal containers of oils and condiments. Bottle caps serve to prevent liquids from leaking out of the bottle. Currently, bottle caps are threaded onto the bottle neck. However, with this connection method, liquids can still leak from the gap between the bottle neck and the cap. For substances requiring high sealing, existing bottle caps are insufficient, such as those used to store oils. Utility Model Content
[0003] This utility model provides a modular bottle cap that can be used for bottles with low or high sealing requirements. It can be used in glass, PE, PP, and PET bottles for storing sesame paste, jam, honey, dried fruit, etc. It can completely replace various gaskets, including PE foam gaskets, heat-sensitive gaskets, and electromagnetic heating gaskets. Users do not need to add equipment, saving costs and increasing sealing performance.
[0004] To achieve the above objectives, this utility model provides the following technical solution:
[0005] A combination bottle cap includes an outer cap and an inner cap. The outer cap includes a top cap body and a ring cap body. The ring cap body is located on one side of the top cap body. An inner cap retaining ring is provided inside the ring cap body. The outer edge of the inner cap is located between the inner cap retaining ring and the top cap body. The lower end of the inner cap is located inside the bottle mouth, and the ring cap body is located outside the bottle mouth.
[0006] Preferably, the inner side of the ring cap is provided with several arc-shaped retaining strips, which are connected to the outer side of the bottle.
[0007] Preferably, the inner cap includes a first ring and a second ring. The first ring fits into the top cap body and is located between the top cap body and the inner cap retaining ring. The second ring is perpendicular to the first ring and is located inside the bottle body.
[0008] Preferably, a plurality of sealing rings are provided on the outer side of the second ring, the sealing rings are parallel to the top cover body, and the sealing rings are in contact with the inner side of the bottle mouth.
[0009] Preferably, the top of ring two is connected to the inner ring of ring one.
[0010] Preferably, the outer diameter of the sealing ring is larger than the inner diameter of the bottle body, and the outer diameter of the second ring is smaller than the inner diameter of the bottle body.
[0011] Preferably, the outer side of the ring cover is provided with a plurality of circumferentially distributed blocking parts.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] When a very good seal is required, an inner cap is needed. To enhance the seal, the inner cap is pressed inside the outer cap, with one end of the inner cap pressed between the inner cap retaining ring and the top cap body. The inner cap will deform slightly during pressing, but will automatically return to its original shape after pressing is complete. Compared to existing bottle caps, this invention significantly improves the sealing effect and has a wide range of applications. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of an embodiment of the present invention.
[0015] Figure 2 This is a schematic diagram from another perspective of one embodiment of the present invention.
[0016] Figure 3 This is a cross-sectional view of an embodiment of the present invention.
[0017] Figure 4 This is a schematic diagram of the outer cover of an embodiment of this utility model.
[0018] Figure 5 This is a cross-sectional view of the outer cover of an embodiment of this utility model.
[0019] Figure 6 This is a schematic diagram of the inner cover of one embodiment of the present invention.
[0020] Figure 7 This is a schematic diagram of the inner cover of one embodiment of the present invention from another perspective.
[0021] Figure 8 This is a schematic diagram of the inner cover of another embodiment of this utility model.
[0022] Figure 9 This is a schematic diagram of another embodiment of the present invention.
[0023] Figure 10 This is a cross-sectional schematic diagram of another embodiment of the present invention.
[0024] Figure 11 This is a cross-sectional view of the inner cover of an embodiment of this utility model.
[0025] Figure 12 This is a cross-sectional view of the inner cover of another embodiment of this utility model. Detailed Implementation
[0026] 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.
[0027] As shown in the figure, this utility model embodiment discloses a combined bottle cap, including an outer cap 1 and an inner cap 2. The outer cap 1 includes a top cap body 11 and a ring cap body 12. The ring cap body 12 is located on one side of the top cap body 11. An inner cap retaining ring 13 is provided on the inner side of the ring cap body 12. The outer edge of the inner cap 2 is located between the inner cap retaining ring 13 and the top cap body 11. The lower end of the inner cap 2 is located inside the bottle mouth, and the ring cap body 12 is located outside the bottle mouth.
[0028] When a very good seal is required, inner cap 2 is needed. However, when sealing mineral water bottles, since they are disposable, inner cap 2 is not required. The manufacturer pre-installs inner cap 2 onto outer cap 1 as needed. Specifically, inner cap 2 is pressed inside outer cap 1, with one end of inner cap 2 pressed between inner cap retaining ring 13 and top cap body 11. During this pressing process, inner cap 2 will deform slightly; its shape will automatically return to its original position after pressing is complete. Figure 2 and Figure 9 .
[0029] In one embodiment of this utility model, such as Figure 4 and Figure 5 The inner side of the ring cap 12 is also provided with several arc-shaped retaining strips 14, which connect to the outer side of the bottle body. The retaining strips 14 here connect with the corresponding connecting strips on the outer side of the bottle body to achieve a threaded connection effect, hence the retaining strips 14 are arc-shaped.
[0030] In one embodiment of this utility model, such as Figure 6 and Figure 7 The inner cap 2 includes ring 1 (21) and ring 2 (22). Ring 1 (21) fits snugly against the top cap body 11, located between the top cap body 11 and the inner cap retaining ring 13. The plane of ring 1 (21) presses tightly against the plane of the bottle opening for a seal. Ring 2 (22) is perpendicular to ring 1 (21) and located inside the bottle. The structural design of the inner cap 2 facilitates pressing it onto the outer cap 1 because it is a ring-shaped structure with no central seal, allowing for easy deformation and connection between the inner cap 2 and the outer cap 1. Simultaneously, the overall ring shape of the inner cap 2 significantly reduces weight and production costs. The inner side of the bottle opening contacts ring 2 (22) to complete the seal. Ring 1 (21) and ring 2 (22) can also be connected by a rounded transition, which increases the contact surface at the bottle opening and achieves a better sealing effect.
[0031] The outer diameter of ring 22 is smaller than the inner diameter of the bottle, and the outer side of ring 22 is slidably connected to the bottle body.
[0032] Existing disposable injection molded bottle caps are integrally formed by ring 22 and top cap 11. However, during installation, a negative pressure is generated, causing the top cap 11 to be dented, resulting in insufficient strength. This utility model forms a split type, ensuring the strength of the bottle cap and preventing the middle of the outer cap from being dented.
[0033] In another embodiment of this utility model, such as Figure 8 As shown, several sealing rings 23 are provided on the outer side of ring 22. The sealing rings 23 are parallel to the top cover 11 and contact the inner side of the bottle opening. The sealing rings 23 also contact the inner wall of the bottle. Multiple sealing rings 23 provide multiple sealing functions, effectively sealing the interior of the bottle. There can be two or more sealing rings 23, arranged vertically in parallel. The sealing performance of this invention is better than the previous embodiment because it uses sealing rings 23 to seal against the inner side of the bottle. This is a line contact, while the previous embodiment used surface contact. Line contact provides better sealing than surface contact. The inner cover 2 of this embodiment is more expensive than the previous embodiment and is suitable for products with high sealing requirements. The sealing rings 23 here can also be called sealing rings or toothed rings.
[0034] In one embodiment of this utility model, the top of ring 22 is connected to the inner ring of ring 21, so that ring 22 and ring 21 are an integral structure, which is not easily damaged when deformed, thus reducing the damage rate during installation.
[0035] In one embodiment of this utility model, the outer diameter of the sealing ring 23 is larger than the inner diameter of the bottle body, which is an interference fit, increasing the contact surface and enhancing the sealing effect.
[0036] In one embodiment of this utility model, a plurality of circumferentially distributed blocking portions 121 are provided on the outer side of the ring cap 12. The blocking portions increase the friction force, making it convenient to manually open the bottle cap.
[0037] The length of the blocking part 121 is less than the height of the ring cover 12, and the blocking part 121 is located at the upper end of the ring cover 12.
[0038] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of this utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.
Claims
1. A modular bottle cap, characterized in that: It includes an outer cap and an inner cap. The outer cap includes a top cap body and a ring cap body. The ring cap body is located on one side of the top cap body. An inner cap retaining ring is provided inside the ring cap body. The outer edge of the inner cap is located between the inner cap retaining ring and the top cap body. The lower end of the inner cap is located inside the bottle mouth, and the ring cap body is located outside the bottle mouth.
2. The combined bottle cap according to claim 1, characterized in that: The inner side of the ring cap is also provided with several arc-shaped locking strips, which are connected to the outer side of the bottle.
3. The combined bottle cap according to claim 1, characterized in that: The inner cap includes ring one and ring two. Ring one fits snugly against the top cap body and is located between the top cap body and the inner cap retaining ring. Ring two is perpendicular to ring one or connected to ring one by a circular arc transition and is located inside the bottle body.
4. The combined bottle cap according to claim 3, characterized in that: Several sealing rings are provided on the outer side of Ring 2. The sealing rings are parallel to the top cover and contact the inner side of the bottle mouth.
5. The combined bottle cap according to claim 3, characterized in that: The top of ring two is connected to the inner ring of ring one.
6. The combined bottle cap according to claim 4, characterized in that: The outer diameter of the sealing ring is larger than the inner diameter of the bottle body, while the outer diameter of the second ring is smaller than the inner diameter of the bottle body.
7. The combined bottle cap according to claim 1, characterized in that: The outer side of the ring cover has several circumferentially distributed blocking parts.