Split type pressing piece structure of bottle cap capable of storing materials

By using a split design and a two-color injection molding process, and selecting soft and hard materials for the deformable cap plate and top pressure column respectively, the problem of inaccurate material control in the existing technology is solved, and a more stable and material-saving bottle cap structure design is achieved.

CN223962543UActive Publication Date: 2026-03-03ZHONGSHAN HUIWEI PLASTIC METAL IND
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-20
Publication Date
2026-03-03

AI Technical Summary

Technical Problem

The existing press mechanism structure of the refillable bottle cap suffers from inaccurate material control, resulting in excessive pressing resistance or insufficient strength of the top pressing column, poor structural stability, and serious material waste.

Method used

The design adopts a split structure, with the deformation cover plate and the top pressure column made of different materials and manufactured into an integrated structure through a two-color injection molding process. The deformation cover plate is made of soft material, while the top pressure column is made of hard material. The connection method is a two-color injection molding process or a hot-press connection.

Benefits of technology

It improves structural stability and service life, reduces material waste, simplifies the production process, and increases production efficiency and assembly reliability.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a material storage type bottle cap split type pressing piece structure which comprises a bottle cap seat and a pressing piece connected to the top of the bottle cap seat, the bottle cap seat is provided with a material storage cavity with the top open, the pressing piece covers the opening of the material storage cavity in a sealing mode, and a sealed material storage space used for storing materials is defined by the pressing piece and the inner wall of the material storage cavity. The bottom of the material storage cavity is composed of a thin-wall bottom plate, the pressing piece is composed of a deformation cover plate and a top pressing column, the peripheral edge of the deformation cover plate is connected to the bottle cap base so as to seal and cover the material storage cavity, and the deformation cover plate is of a deformable structure made of soft materials so as to be pressed by hands. The top pressing column is connected to the middle of the deformation cover plate so that the thin-wall bottom plate can be pierced by the top pressing column when the deformation cover plate is pressed downwards, and the split type pressing piece structure of the bottle cap capable of storing the materials aims at overcoming the defects in the prior art and is better in stability and capable of saving more materials.
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Description

Technical Field

[0001] This utility model specifically relates to a split-type press-fit structure for a bottle cap that can store material. Background Technology

[0002] Most beverage bottles on the market have caps, and consumers can drink the beverage after unscrewing the cap. However, some beverages require additives or other ingredients, so detachable caps have emerged. Detachable beverage caps usually have additives pre-placed inside the cap cavity, so consumers can mix the additives with the solution to make their own beverage after opening the cap. The inventor previously developed a detachable bottle cap, referring to the inventor's previous patent application CN202322835761.6 entitled "A Convenient Unsealing Structure for a Detachable Bottle Cap." However, this type of bottle cap has a complex structure and is inconvenient to operate. Therefore, the inventor has developed a storage-type bottle cap, which includes a bottle cap seat and a pressing component. The bottle cap seat and the pressing component form a cavity for storing material. The pressing component can be partially deformed for manual pressing. The pressing component has a top pressure column that can pierce the bottom of the cavity when pressed. The pressing component is usually a one-piece structure. However, this structure has a drawback: the pressing component needs to be partially deformed, so the material should be soft. However, the top pressure column needs to pierce the bottle cap material, so the material needs to be hard. Therefore, it is difficult to accurately control the material and local material thickness of the pressing component. In actual production, this often results in excessive pressing resistance and insufficient strength of the top pressure column, which can easily lead to poor structural stability and material waste.

[0003] This utility model was developed precisely because of the aforementioned shortcomings. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a detachable press-type bottle cap structure with better stability and more material-saving storage.

[0005] This utility model is achieved through the following technical solution:

[0006] This utility model provides a split-type pressing structure for a storage-type bottle cap, including a bottle cap seat and a pressing component connected to its top. The bottle cap seat has a storage cavity with an open top. The pressing component seals the opening of the storage cavity and forms a sealed storage space with the inner wall of the storage cavity for storing materials. The bottom of the storage cavity is composed of a thin-walled base plate. The pressing component consists of a deformable cover plate and a top pressing column. The deformable cover plate is connected to the bottle cap seat around its perimeter to seal the storage cavity. The deformable cover plate is a deformable structure made of soft material so that it can be pressed by hand. The top pressing column is connected to the middle of the deformable cover plate so that when the deformable cover plate is pressed down, the top pressing column pierces the thin-walled base plate.

[0007] As described above, the detachable press-fit structure of the storage-type bottle cap is an integral structure made by a two-color injection molding process, wherein the deformable cap plate and the top pressing column are made into one piece.

[0008] As described above, the detachable press-fit structure of the storage-type bottle cap is made of soft TPE, TPR, TPU, EVA, LDPE or silicone material.

[0009] As described above, the top pressure column of the detachable bottle cap with a storage capacity is made of PP, PC, PET, HDPE, or PVC.

[0010] As described above, the detachable press-type structure of the storage-type bottle cap includes a press portion located in the center and arched upwards, a deformation ring portion connected to the periphery of the press portion and bent, and a connecting ring portion connected to the periphery of the deformation ring portion and used to connect to the bottle cap seat.

[0011] As described above, in the detachable press-type structure of the storage-type bottle cap, the bottle cap seat has an annular mounting surface around the opening of the storage cavity that matches the shape of the connecting ring.

[0012] As described above, in the detachable press-fit structure of the storage-type bottle cap, the connecting ring is connected to the annular mounting surface by a plastic hot-pressing process, and the bottom surface of the connecting ring is provided with a downward protruding connecting rib for hot melting.

[0013] As described above, in the detachable press-type structure of the storage-type bottle cap, the deformable cap plate has a first connecting boss that protrudes downward on the lower side of the middle part of the pressing part, and the top of the pressing column has a second connecting boss that matches the shape of the first connecting boss and is used to connect with the first connecting boss.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] 1. Optimized Material Selection and Structural Design: The split-type pressing component design allows for the use of different materials for the deformable cover and the top pressure column, thus optimizing the functional characteristics of each part. For example, a soft material can be used for the deformable cover to improve pressing comfort and sealing, while a hard material can be used for the top pressure column to ensure sufficient rigidity and puncture resistance. This not only enhances the overall structural strength and stability but also extends service life.

[0016] 2. Environmental protection and resource conservation: Because the amount of material used in the parts can be precisely controlled and the one-piece structure is manufactured by two-color injection molding, the waste of materials in the production process is reduced, which is beneficial to the environment.

[0017] 3. Using a two-color injection molding process to make the deformable cover plate and top pressure column into an integrated structure simplifies the assembly process and improves production efficiency. Compared with traditional bonding or hot pressing methods, this method is more stable and reliable and reduces the defect rate. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the bottle cap of this utility model;

[0019] Figure 2 This is a cross-sectional schematic diagram of the bottle cap of this utility model;

[0020] Figure 3 This is an exploded view of the bottle cap of this utility model;

[0021] Figure 4 This is a schematic diagram showing the usage state of the bottle cap of this utility model;

[0022] Figure 5 This is a schematic diagram of the pressing component of this utility model;

[0023] Figure 6 This is a cross-sectional schematic diagram of the pressing component of this utility model. Detailed Implementation

[0024] The utility model will be further described below with reference to the accompanying drawings:

[0025] 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.

[0026] This utility model introduces a split-type press-fit structure for a bottle cap with a storage capacity, such as... Figures 1 to 3As shown, this type of bottle cap is used to connect to the mouth of a beverage bottle. Its structure includes a bottle cap seat 1 and a pressing member 2 connected to its top. The bottle cap seat 1 is provided with a storage cavity 10 with an open top. The pressing member 2 seals the opening of the storage cavity 10 and forms a sealed storage space with the inner wall of the storage cavity 10 for storing materials. During processing and manufacturing, the material is first filled into the storage cavity 10, and then the pressing member 2 is assembled onto the bottle cap 1, so that the storage cavity 10 and the pressing member 2 form a closed storage space for storing the blended material. In this embodiment, the material used for blending is pre-made tea powder. Of course, the material can also be sugar powder, seasonings, etc. The bottom of the storage chamber 10 is formed by a thin-walled base plate 11. The pressing component 2 is a split structure, consisting of a deformable cover plate 21 and a pressing column 22. This allows for the use of different materials in the two parts, enabling the deformable cover plate 21 to be made of a softer material and the pressing column 22 to be made of a harder material. The deformable cover plate 21 is connected to the bottle cap seat 1 around its perimeter to seal the storage chamber 10. The deformable cover plate 21 is a deformable structure made of a soft material, allowing it to be pressed by hand. The pressing column 22 is connected to the middle of the deformable cover plate 21, so that when the deformable cover plate 21 is pressed down, the pressing column 22 pierces the thin-walled base plate 11. In use, pressing the deformable cover plate 21 causes it to deform downwards locally, and then the pressing column 22 moves downwards to pierce the thin-walled base plate 11. Figure 4 As shown, the material in the storage space enters the bottle through the opening and mixes with the beverage. In this embodiment, the material of the deformable cover plate 21 and the top pressure column 22 are controlled separately by the split design of the pressing part 2, which makes the structure stronger and more stable. At the same time, it can more accurately control the amount of material used in the parts, avoid waste, and is beneficial to environmental protection.

[0027] like Figure 5 and Figure 6 As shown, the deformable cover plate 21 and the top pressure column 22 are connected to form the pressing component 2. The connection between the two can be achieved by general bonding or hot pressing. However, as a preferred embodiment, in this example, the deformable cover plate 21 and the top pressure column 22 are an integral structure made by a two-color injection molding process. Two different colors or different materials of plastic are plasticized through two barrels and then injected simultaneously or sequentially through the same nozzle. Two injection molding machines or a two-color injection molding machine are used to form the structure, so that the deformable cover plate 21 and the top pressure column 22 are bonded together during the injection molding process, thereby improving the strength and stability of the structure.

[0028] Preferably, the deformable cover plate 21 can be made of soft TPE, TPR, TPU, EVA, LDPE or silicone. Among them, TPE / TPR (thermoplastic elastomer) has high elasticity and fatigue resistance, and is often used in seals and hinges. It has good compatibility with PP and is suitable for two-color injection molding. The top pressure column 22 can be made of PP, PC, PET, HDPE or PVC. Among them, PP (polypropylene) is the most commonly used material, with moderate rigidity and chemical corrosion resistance. HDPE (high-density polyethylene) has higher rigidity than PP, is impact resistant, and is also suitable for two-color injection molding.

[0029] As a preferred option, such as Figure 2 and Figure 3 As shown, the deformable cover plate 21 includes a pressing part 211 located in the middle and arched upward, a deformable ring part 212 connected to the periphery of the pressing part 211 and bent, and a connecting ring part 213 connected to the periphery of the deformable ring part 212 and used to connect to the bottle cap seat 1.

[0030] Preferably, to ensure a stable and reliable connection between the deformable cap 21 and the cap holder 1, a separate press-fit structure for the storage-type cap is used. The cap holder 1 has an annular mounting surface 12 around the opening of the storage cavity 10, matching the shape of the connecting ring 213. More preferably, the connecting ring 213 is connected to the annular mounting surface 12 via a plastic hot-pressing process. The bottom surface of the connecting ring 213 has a downwardly protruding connecting rib 214 for heat fusion. When the connecting ring 213 is pressed against the annular mounting surface 12, heating causes the connecting rib 214 to heat-fuse between the connecting ring 213 and the mounting surface 12, thereby forming a stable and reliable connection.

[0031] As a preferred option, such as Figure 5 As shown, the deformable cover plate 21 has a first connecting boss 215 protruding downward on the lower side of the middle part of the pressing part 211, and the top of the top pressing column 22 has a second connecting boss 221 that matches the shape of the first connecting boss 215 and is used to connect with the first connecting boss 215, so that the deformable cover plate 21 and the top pressing column 22 can be connected and aligned. At the same time, the mold cavity has a more regular shape in two-color injection molding, making the injection molding quality more stable.

[0032] 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 detachable press-type structure for a bottle cap with a storage capacity, characterized in that: The device includes a bottle cap holder (1) and a pressing member (2) connected to its top. The bottle cap holder (1) has a storage cavity (10) with an open top. The pressing member (2) covers the opening of the storage cavity (10) and forms a sealed storage space with the inner wall of the storage cavity (10) for storing materials. The bottom of the storage cavity (10) is composed of a thin-walled bottom plate (11). The pressing member (2) is composed of a deformable cover plate (21) and a top pressing column (22). The deformable cover plate (21) is connected to the bottle cap holder (1) around its perimeter to cover the storage cavity (10). The deformable cover plate (21) is a deformable structure made of soft material so that it can be pressed by hand. The top pressing column (22) is connected to the middle of the deformable cover plate (21) so that when the deformable cover plate (21) is pressed down, the top pressing column (22) pierces the thin-walled bottom plate (11).

2. The detachable press-fit structure of the storage-type bottle cap according to claim 1, characterized in that: The deformable cover plate (21) and the top pressure column (22) are integral structures made by two-color injection molding process.

3. The detachable press-fit structure of the storage-type bottle cap according to claim 2, characterized in that: The deformable cover plate (21) is made of soft TPE, TPR, TPU, EVA, LDPE or silicone material.

4. The detachable press-fit structure of the storage-type bottle cap according to claim 2, characterized in that: The top pressure column (22) is made of PP, PC, PET, HDPE or PVC.

5. The detachable press-fit structure for a storage-type bottle cap according to any one of claims 1 or 2, characterized in that: The deformable cover plate (21) includes a pressing part (211) located in the middle and arched upward, a deformable ring part (212) connected to the periphery of the pressing part (211) and bent, and a connecting ring part (213) connected to the periphery of the deformable ring part (212) and used to connect to the bottle cap seat (1).

6. The detachable press-type bottle cap structure according to claim 5, characterized in that: The bottle cap holder (1) has an annular mounting surface (12) around the opening of the storage cavity (10) that matches the shape of the connecting ring (213).

7. The detachable press-fit structure of the storage-type bottle cap according to claim 6, characterized in that: The connecting ring (213) is connected to the annular mounting surface (12) by a plastic hot pressing process. The bottom surface of the connecting ring (213) is provided with a downward protruding connecting rib (214) for hot melting.

8. The detachable press-fit structure of the storage-type bottle cap according to claim 1, characterized in that: The deformable cover plate (21) has a first connecting boss (215) that protrudes downward on the lower side of the middle part of the pressing part (211), and the top of the pressing column (22) has a second connecting boss (221) that matches the shape of the first connecting boss (215) and is used to connect with the first connecting boss (215).

Citation Information

Patent Citations

  • Separating type bottle cap convenient unsealing structure

    CN221915509U