Anti-pulling inner sleeve, bottle cap and wine bottle

Abstract

The invention relates to the technical field of bottle cap pulling prevention, and provides an anti-pulling inner sleeve, a bottle cap and a wine bottle, the inner sleeve is provided with an anti-pulling boss extending towards the inner side and an anti-pulling groove used for being connected with the outer side of a bottle opening in a clamped mode, and the lower end of the inner sleeve is provided with a plurality of notches extending to the position above the anti-pulling boss so that the lower end of the inner sleeve can elastically expand outwards; and the anti-pulling groove is used for clamping the anti-pulling boss into the outer side of the bottle opening. Compared with a clamping jaw structure assembled through self elasticity in the prior art, the anti-pulling boss has higher self rigidity and smaller elastic deformation capacity, and when the anti-pulling boss is forcibly pulled by external force, the anti-pulling boss can be stably limited in the anti-pulling groove and cannot be disengaged; therefore, the problem that in the prior art, due to the fact that the elasticity of the clamping jaw is too large, the clamping jaw is prone to being separated from the bottle opening during forced pulling is effectively solved, the pulling-out prevention performance of the bottle cap is improved, and the anti-fake effect is improved.

Description

Technical Field

[0001] This invention relates to the field of bottle cap anti-pull technology, and more specifically, to an anti-pull inner sleeve, a bottle cap, and a wine bottle. Background Technology

[0002] Currently, the vast majority of alcoholic beverage bottle caps (such as those disclosed in patent documents with publication numbers "CN214029999U", "CN116873374A", "CN223905634U", "CN214932201U", and "CN222683127U") consist of components such as an inner sleeve, an inner stopper, an inner cap, and an outer cap. Among these, the inner sleeve, which fits over the bottle neck and is engaged with it through an anti-pull-out structure, is the key component preventing the entire bottle cap from being pulled off.

[0003] In the prior art, reference Figure 1 and Figure 2 The anti-pull structure of the inner sleeve 1 and the bottle body 2 is usually provided with multiple inwardly extending claws 103 (also called buckles, clips, springs, snap connectors, etc. in some existing technologies, hereinafter collectively referred to as claws 103) on the inner sleeve 1 along the circumferential direction. During installation, the claws 103 are engaged in the anti-pull groove 201 on the outside of the bottle mouth (also called bottle lip, recess, etc. in some existing technologies, hereinafter collectively referred to as anti-pull groove 201).

[0004] However, in order to ensure that the claw can be smoothly inserted into the anti-pull groove on the outside of the bottle opening, the claw itself must have sufficient elasticity. This elasticity also makes it easy for the claw to detach from the bottle opening when pulled by external force, thus failing to achieve the desired anti-pull effect and resulting in poor anti-counterfeiting effect. Summary of the Invention

[0005] The purpose of this invention is to provide an anti-pull-out inner sleeve, a bottle cap, and a wine bottle to solve the above-mentioned defects of the prior art.

[0006] This invention is achieved through the following technical solution:

[0007] An anti-pull inner sleeve has an inwardly extending anti-pull protrusion for engaging with an anti-pull groove on the outside of the bottle opening. The lower end of the inner sleeve has several notches extending above the anti-pull protrusion so that the lower end of the inner sleeve can elastically expand outward to allow the anti-pull protrusion to engage with the anti-pull groove on the outside of the bottle opening.

[0008] Furthermore, the top of the anti-pull-out boss has a planar structure.

[0009] Furthermore, the bottom of the anti-pull-out boss is provided with a guide slope for downward pressure guidance.

[0010] Furthermore, the inner sleeve includes an upper sleeve and a lower sleeve, which are integrally injection molded from two different materials.

[0011] Furthermore, the upper sleeve is made of PET, and the lower sleeve is made of PC.

[0012] The present invention also provides a bottle cap, comprising the inner sleeve described in any of the above claims.

[0013] The present invention also provides a wine bottle, including the aforementioned bottle cap.

[0014] The technical solution of the present invention has at least the following advantages and beneficial effects: In the present invention, by providing several notches extending to the top of the anti-pull-out protrusion at the lower end of the inner sleeve, the lower end of the inner sleeve can elastically expand outward during installation, ensuring that the anti-pull-out protrusion can smoothly engage in the anti-pull-out groove on the outside of the bottle opening; after installation, because the outer side of the inner sleeve is limited and constrained by other components (such as the outer cap), the lower end of the inner sleeve cannot expand outward when forcibly pulled. At the same time, compared with the claw structure that relies on its own elastic assembly in the prior art, the anti-pull-out protrusion has greater self-rigidity and smaller elastic deformation capacity. When subjected to external force forcibly pulled, the anti-pull-out protrusion can be stably restricted in the anti-pull-out groove and cannot be pulled out (unless the bottle opening is damaged), thereby effectively solving the problem in the prior art that the claw is too elastic and easily detaches from the bottle opening when forcibly pulled, improving the anti-pull-out performance of the bottle cap, and thus improving the anti-counterfeiting effect. Attached Figure Description

[0015] Figure 1 A schematic diagram of a pull-out resistant inner sleeve provided in the prior art; Figure 2 A schematic diagram of the bottle mouth structure of a bottle body provided in the prior art; Figure 3 This is a schematic diagram of the anti-pull-out inner sleeve provided in Embodiment 1; Figure 4 for Figure 3 Top view; Figure 5 for Figure 4 AA section view in the middle; Figure 6 This is a schematic diagram of the connection structure between the inner sleeve and the bottle body in Example 1; Figure 7 This is a schematic diagram of the anti-pull-out inner sleeve provided in Example 2; Figure 8 This is a diagram illustrating the usage state of a bottle cap provided in Example 3; Attached reference numerals: 1-inner sleeve, 101-anti-pull-out boss, 102-notch, 103-claw, 11-upper sleeve, 12-lower sleeve, 2-bottle body, 201-anti-pull-out groove, 3-inner cap, 4-outer cap, 5-inner plug. Detailed Implementation

[0016] Example 1 refer to Figures 3-5This embodiment provides an anti-pull-out inner sleeve 1, which is used to fit over the outside of the bottle mouth and form an anti-pull-out locking structure with the bottle mouth. The inner sleeve 1 is generally cylindrical, and its inner sidewall is provided with an anti-pull-out protrusion 101 extending inward. The anti-pull-out protrusion 101 is used to lock into the anti-pull-out groove 201 opened on the outside of the bottle mouth. The anti-pull-out protrusions 101 are continuously arranged or spaced apart along the circumference of the inner sleeve 1. In this embodiment, continuous annular protrusions are preferred to provide uniform locking force.

[0017] The lower end of the inner sleeve 1 (it should be understood that "upper" and "lower" are defined according to the state of the bottle being placed upright in actual use) has several notches 102 along the circumferential direction. The notches 102 extend upward from the lowest end of the inner sleeve 1, and their extension height exceeds the position of the anti-pull-out protrusion 101, that is, the top of the notch 102 is above the anti-pull-out protrusion 101. By setting this notch 102, the lower end of the inner sleeve 1 is divided into multiple independent petal-like structures. These petal-like structures can elastically expand outward when subjected to radially outward force, thereby ensuring that the anti-pull-out protrusion 101 can be smoothly inserted into the anti-pull-out groove 201 on the outside of the bottle mouth. As a preferred embodiment, there are two notches 102 in this embodiment, and the two notches 102 are located on two opposite sides of the inner sleeve 1. In other embodiments, the number of notches 102 can of course be more, and they can be evenly spaced or non-uniformly spaced.

[0018] The bottom of the anti-pull-out boss 101 is provided with a guide slope for downward guidance. During installation, the inner sleeve 1 is placed on the outside of the bottle mouth from top to bottom. When the bottom of the anti-pull-out boss 101 contacts the upper edge of the bottle mouth, the guide slope forms an oblique fit with the upper edge of the bottle mouth. When the inner sleeve 1 is pressed down further, the guide slope is subjected to the reaction force of the upper edge of the bottle mouth, causing the various petal-shaped structures at the lower end of the inner sleeve 1 to elastically expand outward. The anti-pull-out boss 101 smoothly passes over the upper edge of the bottle mouth and continues to move downward until it is inserted into the anti-pull-out groove 201 on the outside of the bottle mouth (reference). Figure 6 At this point, the lower end of the inner sleeve 1 returns to its original position under the action of its own elastic restoring force, and the top of the anti-pull-out protrusion 1 forms a snap-fit ​​with the upper wall of the anti-pull-out groove 201, thus completing the installation.

[0019] Those skilled in the art should understand that after installation, the inner sleeve 1 is usually fitted with an outer cover 4 and other components. These external components tightly wrap around the outside of the inner sleeve 1, forming a radial limit on the lower end of the inner sleeve 1, preventing the lower end of the inner sleeve 1 from elastically expanding outward again. Simultaneously, the anti-pull-out boss 101 itself has high rigidity and low elastic deformation capacity. Compared to the existing claw 103 structure that relies on its own elasticity for assembly, the anti-pull-out boss 101 in this embodiment hardly undergoes elastic deformation when subjected to strong external force, and cannot contract inward or expand outward to detach from the anti-pull-out groove 201. Therefore, when the bottle cap is subjected to axial pull-out force, the anti-pull-out boss 101 can be stably confined within the anti-pull-out groove 201 (unless the bottle mouth is damaged), thereby effectively solving the problem in the prior art where the claw 103 has excessive elasticity and easily detaches from the bottle mouth during strong pulling, improving the anti-pull-out performance of the bottle cap, and thus enhancing the anti-counterfeiting effect.

[0020] In this embodiment, the top of the anti-pull-out boss 101 has a planar structure. After the anti-pull-out boss 101 is engaged in the anti-pull-out groove 201, the planar structure forms a surface contact with the upper wall of the anti-pull-out groove 201. Compared with point contact or line contact, surface contact can significantly increase the engagement area, disperse the axial pull-out force, and further improve the anti-pull-out ability of the anti-pull-out boss 101.

[0021] In this embodiment, the inner sleeve 1 is integrally injection molded from a single material. The specific material is not limited, but PET material is preferred.

[0022] Example 2 refer to Figure 7 The difference between this embodiment and Embodiment 1 is that the inner sleeve 1 consists of an upper sleeve 11 and a lower sleeve 12, and the upper sleeve 11 and the lower sleeve 12 are integrally injection molded from two different materials through two-color injection molding or insert injection molding. The upper sleeve 11 is located at the upper end and is used to connect other parts of the bottle cap (such as the inner cap 3) and will directly contact the wine inside the bottle. Its material is PET, namely polyethylene terephthalate, also known as polyester. The lower sleeve 12 is located at the lower end and is made of PC, namely polycarbonate, which has both rigidity and toughness, good thermal stability, and is not easily softened by heating, thus avoiding forced pulling by heating.

[0023] Example 3 refer to Figure 8This embodiment provides a bottle cap, which includes the inner sleeve 1 provided in any of the above embodiments. Those skilled in the art should understand that the bottle cap may also include other components. For example, in this embodiment, it also includes an inner plug 5, an inner cap 3, and an outer cap 4. The lower end of the inner plug 5 is embedded in the bottle mouth to form a sealing pair, and the upper end of the inner plug 5 forms a sealing pair with the inner wall of the inner sleeve 1. The inner cap 3 is threadedly connected to the inner sleeve 1, and the outer cap 4 is integrally connected to the inner cap 3. Rotating the outer cap 4 will cause the inner cap 3 to rotate, thereby opening the bottle cap. It should be understood that the above-described structure of the bottle cap is only an option and not a limitation. Those skilled in the art can certainly add or remove components according to actual needs. Those skilled in the art also naturally understand that the bottle cap does not rely solely on the anti-pull structure of the inner sleeve 1 for anti-counterfeiting; in practical applications, it is usually combined with other anti-counterfeiting structures for joint anti-counterfeiting.

[0024] Example 4 This embodiment provides a wine bottle, which includes a bottle body 2 and a bottle cap as provided in Embodiment 3. An anti-pull groove 201 is provided on the outer side of the bottle mouth of the bottle body 2, matching the anti-pull protrusion 101 of the inner sleeve 1. After the bottle cap is installed, the anti-pull protrusion 101 on the inner sleeve 1 engages with the anti-pull groove 201, forming a stable anti-pull connection between the bottle cap and the bottle body 2. Forcibly pulling out the bottle cap will damage the bottle mouth, thus improving the anti-counterfeiting effect.

[0025] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An anti-pull-out inner sleeve, characterized in that, It has an anti-pull-out protrusion extending inward to engage with the anti-pull-out groove on the outside of the bottle opening. The lower end of the inner sleeve has several notches extending above the anti-pull-out protrusion so that the lower end of the inner sleeve can expand outward elastically, allowing the anti-pull-out protrusion to engage with the anti-pull-out groove on the outside of the bottle opening.

2. The anti-pull-out inner sleeve according to claim 1, characterized in that, The top of the anti-pull-out boss has a planar structure.

3. The anti-pull-out inner sleeve according to claim 1, characterized in that, The bottom of the anti-pull-out boss is provided with a guide slope for downward pressure guidance.

4. The anti-pull-out inner sleeve according to any one of claims 1-3, characterized in that, The inner sleeve consists of an upper sleeve and a lower sleeve, which are integrally injection molded from two different materials.

5. The anti-pull-out inner sleeve according to claim 1, characterized in that, The upper sleeve is made of PET, and the lower sleeve is made of PC.

6. A bottle cap, characterized in that, Includes the inner sleeve as described in any one of claims 1-5.

7. A wine bottle, characterized in that, Includes the bottle cap as described in claim 6.

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