Solid beverage bottle cap
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 谢泳
- Filing Date
- 2025-08-12
- Publication Date
- 2026-06-02
AI Technical Summary
Existing beverage bottle caps suffer from low liquid dispensing efficiency due to air pressure changes at high altitudes, requiring continuous forceful squeezing, which can easily cause liquid splashing and cap wear. Furthermore, the lack of an integrated air pressure compensation mechanism makes it difficult to achieve stable beverage dispensing.
A solid beverage bottle cap was designed. By cooperating with the limiting block of the limiting ring of the storage box extrusion part in the inner cavity of the outer shell, the rotation of the storage box is restricted. The limiting ring variable compression gas is used to achieve pre-tightening and stable release of the material under the action of air pressure. The piston effect is combined to optimize the breaking process.
It improves the efficiency and thoroughness of material release, reduces liquid splashing and cap wear, and ensures stable beverage dispensing operations in complex environments.
Smart Images

Figure CN224312345U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of beverage technology, and more specifically, to a solid beverage bottle cap. Background Technology
[0002] A beverage bottle cap is a portable accessory that screws onto the neck of a standard mineral water bottle. Its core function is to precisely inject liquid or powdered beverages into the water inside the bottle via a built-in channel, enabling instant brewing. This design aims to meet the need for rapid beverage preparation during outdoor activities; users do not need to carry a special container, simply combining the cap with the mineral water bottle to complete the mixing process. Existing similar products mostly use a simple screw-on structure, transferring liquids or powders through a central conduit, but their functionality is limited to basic sealing and unidirectional discharge.
[0003] In high-altitude scenarios such as outdoor mountaineering, changes in air pressure significantly impact beverage dispensing efficiency. When the beverage inside the bottle is at normal pressure, the low-pressure external environment creates a pressure difference between the inside and outside of the bottle, increasing resistance to liquid dispensing. Users must continuously squeeze the bottle to maintain flow. This not only easily causes sudden splashing but can also accelerate wear on the edges of the cap's perforations due to frequent squeezing. More importantly, traditional bottle caps lack an integrated air pressure compensation mechanism, failing to dynamically balance the pressure inside and outside the bottle, making it difficult to achieve stable and clean beverage dispensing in complex outdoor environments.
[0004] Therefore, we made improvements and proposed a solid beverage bottle cap. Utility Model Content
[0005] In order to achieve the above-mentioned objectives, this utility model provides a solid beverage bottle cap to improve the above-mentioned problems.
[0006] The application is as follows:
[0007] include:
[0008] The outer shell has a circular inner cavity that opens unidirectionally along the axis, and its opening side has threads that match the bottle neck. Its outer side wall has:
[0009] The recessed portion is circumferentially set on the outer shell and extends radially into the inner cavity to form a protrusion with the same arc as the recessed portion;
[0010] A storage box is disposed in the inner cavity of the outer shell, with a gap between it and the inner cavity and having a liquid outlet;
[0011] The squeezing section, disposed on the storage box and covering its outlet, has:
[0012] A limiting ring is provided around the periphery of the storage box and extends radially outwards several limiting blocks, wherein the limiting blocks are interposed between two adjacent protrusions formed in the recess.
[0013] A pressure ring is disposed on the circumferential side of the limiting ring and located on the bottle mouth contact path;
[0014] A pull tab is provided on the squeezing part and covers the liquid outlet path of the storage box;
[0015] When the bottle neck spirals through the gap formed between the storage box and the inner cavity, the bottle neck contacts the pressure ring, causing the limiting ring to change to the limiting block abutting against the protrusion. The limiting ring compresses the gas to cause the top of the storage box to deform radially.
[0016] Preferably, the limiting ring further comprises:
[0017] The funnel-shaped surface is formed on the surface adjacent to the limiting ring and the storage box, creating a gap for the storage box to extend radially.
[0018] Preferably, the diameter of the limiting ring is larger than the diameter of the pressure ring.
[0019] Preferably, the limiting block is provided with an inclined surface that gradually increases radially in the direction of gravity.
[0020] Preferred options also include:
[0021] A hook is located on the top of the housing.
[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0023] In the scheme of this application:
[0024] To address the problems in the prior art, this application utilizes a recessed portion within the outer shell that engages with a limiting block on the upper limit ring of the storage box's compression section. This restricts the rotation of the storage box when the pressure ring is pressed against the bottle opening, ensuring stable operation of the pull-button mechanism. Simultaneously, the limiting ring generates a piston effect to compress the gas within the gap, causing the air pressure to act on the top of the storage box, resulting in radial deformation and pre-tightening of the material. This optimizes the efficiency and thoroughness of material release at the moment the pull-button seal breaks. Attached Figure Description
[0025] Figure 1 A front view of a solid beverage bottle cap provided in this application;
[0026] Figure 2 A cross-sectional view of a solid beverage bottle cap provided in this application;
[0027] Figure 3 A top view of the extrusion section of a solid beverage bottle cap provided in this application;
[0028] Figure 4 A bottom view of the extrusion section of a solid beverage bottle cap provided in this application.
[0029] The image shows:
[0030] 1. Outer shell; 11. Recessed part; 2. Hook; 3. Storage box; 4. Squeezing part; 41. Limiting ring; 411. Limiting block; 412. Funnel surface; 42. Pressure ring; 43. Pull buckle. Detailed Implementation
[0031] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention 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 invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.
[0032] For an example, please refer to... Figure 1 , Figure 2 , Figure 3 and Figure 4 A solid beverage bottle cap, comprising:
[0033] The outer casing 1 has a circular inner cavity that opens unidirectionally along the axial direction, and its opening side has a thread that matches the bottle mouth. Its outer side wall has:
[0034] The recess 11 is circumferentially disposed on the outer shell 1 and extends radially into the inner cavity to form a protrusion with the same arc as the recess 11;
[0035] Storage box 3 is disposed in the inner cavity of outer shell 1, with a gap between it and the inner cavity and having a liquid outlet;
[0036] The squeezing part 4, which is disposed on the storage box 3 and covers its outlet, has the following features:
[0037] A limiting ring 41 is arranged around the periphery of the storage box 3 and extends radially outwards several limiting blocks 411. The limiting blocks 411 are interposed between two adjacent protrusions formed in the recess 11.
[0038] The pressure ring 42 is disposed on the side of the limiting ring 41 and is located on the bottle mouth contact path;
[0039] A pull tab 43 is provided on the squeezing part 4 and covers the liquid outlet path of the storage box 3;
[0040] When the bottle neck spirals through the gap formed between the storage box 3 and the inner cavity, the bottle neck contacts the pressure ring 42, causing the limiting ring 41 to deform until the limiting block 411 abuts against the protrusion, and the limiting ring 41 squeezes the gas to cause the top of the storage box 3 to deform radially.
[0041] When the user aligns the bottle opening of the mineral water bottle with the outer casing 1 and begins to screw it on, the bottle opening will be pushed inward along the threads on the inner side of the outer casing 1. During this process, the bottle opening will gradually pass through the gap reserved between the inner cavity of the outer casing 1 and the storage box 3. When the bottle opening contacts the pressure ring 42 on the compression part 4 located at the top of the storage box 3, the continuous screwing in of the bottle opening and the upward pressure will directly act on the pressure ring 42, forcing the entire compression part 4, together with the limiting ring 41 and the buckle 43 thereon, to undergo upward displacement and deformation relative to the outer casing 1. Since the limiting ring 41 is arranged around the periphery of the storage box 3 and extends radially outward with limiting blocks 411, and these limiting blocks 411 are precisely inserted between the adjacent protrusions formed by the recess 11 of the outer casing 1, when the limiting ring 41 is deformed by the pressure ring 42 being pressed down by the bottle opening, the limiting blocks 411 thereon will abut or lock against the protruding sidewalls formed by the recess 11.
[0042] The protrusion effectively restricts the tendency of the storage box 3 to rotate as the bottle neck screws in, ensuring that the storage box 3 and its top pull tab 43 remain essentially stationary and do not rotate during the tightening of the bottle cap. This prevents the limiting ring 41 from having a relative rotation tendency, thus avoiding relative rotation with the pull tab 43 and making the pull tab 43 easier to break. It also avoids operational difficulties caused by the rotation of the storage box 3 and premature damage due to movement during the climbing process. Secondly, and more importantly, during deformation, especially when the limiting block 411 continues to be pressed upwards by the bottle neck pressure after being restricted by the protrusion, the limiting ring 41 itself forms a dynamic sealing structure similar to the upward movement of a piston between the periphery of the storage box 3 and the inner cavity of the outer shell 1. This upward movement compresses the air in the gaps between the top of the storage box 3 and the top of the inner cavity of the outer shell 1, as well as between the periphery of the storage box 3 and the inner cavity of the outer shell 1.
[0043] As the bottle neck is continuously screwed into the pressure-bearing ring 42, the limiting ring 41 continuously deforms, compressing the sealed space and causing a significant increase in internal air pressure. This pressurization process does not directly act on the pull tab 43 itself to break it, as the breakage of the pull tab 43 can depend on the user tearing it open; rather, it acts on the top of the storage box 3. The increased air pressure applies pressure evenly inward, causing the top of the storage box 3, especially the area near the liquid outlet, to undergo radial, inward elastic deformation, making its structure slightly taut or concave. This pre-pressurized state is crucial: on the one hand, it provides the initial impetus for the smooth and rapid release of the powder or liquid material in the storage box 3 when the user later tears open the pull tab 43, helping the material to instantly break through the opening and reducing residue; on the other hand, the inward pressure generated by the top deformation helps the material to be sprayed or flowed out more concentratedly and effectively from the opening at the moment the pull tab 43 is torn open, improving dissolution efficiency and reducing the phenomenon of material adhering to the top wall of the storage box 3. Therefore, the entire process achieves a comprehensive effect of preventing rotation, increasing pressure, and optimizing the release of the seal by synergistically using bottle neck squeezing to trigger the limit, piston effect, and air pressure pre-tightening.
[0044] The limiting ring 41 also has:
[0045] The funnel surface 412 is formed on the surface adjacent to the limiting ring 41 and the storage box 3, creating a gap for the storage box 3 to extend radially. Since air pressure can cause the storage box 3 to deform in a rock climbing environment, the funnel surface 412 allows the bottom of the storage box 3 to have deformation space to prevent expansion and explosion.
[0046] The diameter of the limiting ring 41 is larger than the diameter of the pressure ring 42.
[0047] The limiting block 411 has an inclined surface that gradually increases radially in the direction of gravity. When the limiting ring 41 deforms radially, the inclined surface contacts the inner cavity and causes the funnel surface 412 to turn outward into a larger cavity, preventing the storage box 3 from being cut and leaking liquid at this position.
[0048] Also includes:
[0049] The hook 2 is located on the top of the outer shell 1, making it easier for users to carry and preventing it from falling.
[0050] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.
Claims
1. A solid beverage bottle cap, characterized in that, include: The outer shell has a circular inner cavity that opens unidirectionally along the axis, and its opening side has threads that match the bottle neck. Its outer side wall has: The recessed portion is circumferentially set on the outer shell and extends radially into the inner cavity to form a protrusion with the same arc as the recessed portion; A storage box is disposed in the inner cavity of the outer shell, with a gap between it and the inner cavity and having a liquid outlet; The squeezing section, disposed on the storage box and covering its outlet, has: A limiting ring is provided around the periphery of the storage box and extends radially outwards several limiting blocks, wherein the limiting blocks are interposed between two adjacent protrusions formed in the recess. A pressure ring is disposed on the circumferential side of the limiting ring and located on the bottle mouth contact path; A pull tab is provided on the squeezing part and covers the liquid outlet path of the storage box; When the bottle neck spirals through the gap formed between the storage box and the inner cavity, the bottle neck contacts the pressure ring, causing the limiting ring to change to the limiting block abutting against the protrusion. The limiting ring compresses the gas to cause the top of the storage box to deform radially.
2. A solid beverage bottle cap according to claim 1, characterized in that, The limiting ring also has: The funnel-shaped surface is formed on the surface adjacent to the limiting ring and the storage box, creating a gap for the storage box to extend radially.
3. A solid beverage bottle cap according to claim 2, characterized in that, The diameter of the limiting ring is larger than the diameter of the pressure ring.
4. A solid beverage bottle cap according to claim 3, characterized in that, The limiting block has an inclined surface that gradually increases radially in the direction of gravity.
5. A solid beverage bottle cap according to claim 4, characterized in that, Also includes: A hook is located on the top of the housing.