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CN-122009666-A - Anti-pulling inner sleeve, bottle cap and wine bottle

CN122009666ACN 122009666 ACN122009666 ACN 122009666ACN-122009666-A

Abstract

The invention relates to the technical field of bottle cap anti-pulling, and provides an anti-pulling inner sleeve, a bottle cap and a wine bottle, wherein the inner sleeve is provided with an anti-pulling boss extending inwards for clamping an anti-pulling groove at the outer side of a bottle opening, the lower end of the inner sleeve is provided with a plurality of notches extending to the upper part of the anti-pulling boss so that the lower end of the inner sleeve can elastically expand outwards to be clamped into the anti-pulling groove at the outer side of the bottle mouth by the anti-pulling boss. Compared with the claw structure which is assembled by self elasticity in the prior art, the anti-pulling boss has larger self rigidity and smaller elastic deformation capacity, and can be firmly limited in the anti-pulling groove and can not be pulled out when being pulled out by external force, so that the problems that the claw elasticity is too large and the claw is easy to be separated from a bottle opening when being pulled out by force in the prior art are effectively solved, the anti-pulling performance of the bottle cap is improved, and the anti-counterfeiting effect is further improved.

Inventors

  • CAO JUNFENG
  • WU YANG
  • ZHANG SHENGJUN
  • LIN NENGHONG
  • YU QIANG

Assignees

  • 宿迁启航瑞展科技有限公司

Dates

Publication Date
20260512
Application Date
20260410

Claims (7)

  1. 1. The anti-pulling inner sleeve is characterized in that an anti-pulling boss extending inwards is arranged and is used for being clamped with an anti-pulling groove at the outer side of a bottle opening, and a plurality of notches extending to the upper side of the anti-pulling boss are arranged at the lower end of the inner sleeve, so that the lower end of the inner sleeve can elastically expand outwards and is clamped into the anti-pulling groove at the outer side of the bottle opening.
  2. 2. The anti-pull inner sleeve of claim 1, wherein the top of the anti-pull boss is planar.
  3. 3. The anti-pull inner sleeve according to claim 1, wherein a guiding inclined surface for downward guiding is arranged at the bottom of the anti-pull boss.
  4. 4. A pull-out preventing inner sleeve according to any one of claims 1 to 3, wherein the inner sleeve comprises an upper sleeve and a lower sleeve, the upper sleeve and the lower sleeve being integrally injection molded from two materials.
  5. 5. The anti-pull inner sleeve of claim 1, wherein the upper sleeve is PET and the lower sleeve is PC.
  6. 6. A closure comprising an inner sleeve according to any one of claims 1 to 5.
  7. 7. A wine bottle comprising the cap of claim 6.

Description

Anti-pulling inner sleeve, bottle cap and wine bottle Technical Field The invention relates to the technical field of bottle cap pulling prevention, in particular to a pulling-preventing inner sleeve, a bottle cap and a wine bottle. Background Currently, most wine bottle caps (e.g., the caps provided in patent documents with publication numbers "CN214029999U", "CN116873374A", "CN223905634U", "CN214932201U", "CN222683127U", etc.) include inner sleeve, inner plug, inner cap, outer cap, etc. The inner sleeve is sleeved on the bottle mouth and is clamped with the bottle mouth through an anti-pulling structure, so that the bottle cap is a key component for preventing the whole bottle cap from being pulled out. In the prior art, referring to fig. 1 and 2, the anti-pulling structure of the inner sleeve 1 and the bottle body 2 is generally that a plurality of jaws 103 (also referred to as a buckle, a clamping block, a spring, a clamping joint, etc. in some prior arts, hereinafter collectively referred to as the jaws 103) extending inwards are disposed on the inner sleeve 1 along the circumferential direction, and when the anti-pulling structure is installed, the jaws 103 are clamped into anti-pulling grooves 201 (also referred to as a bottle lip, a recess, etc. in some prior arts, hereinafter collectively referred to as the anti-pulling grooves 201) on the outer side of the bottle mouth. However, since the claw is to be ensured to be smoothly clamped into the anti-pulling groove at the outer side of the bottle opening, the claw has enough elasticity, and the claw is easy to separate from the bottle opening when the external force is strong pulled out, so that the desirable anti-pulling effect cannot be achieved, and the anti-counterfeiting effect is poor. Disclosure of Invention The invention aims to provide an anti-pulling inner sleeve, a bottle cap and a wine bottle, which are used for solving the defects in the prior art. The invention is realized by the following technical scheme: the inner sleeve is provided with an inward extending anti-pulling boss for clamping the anti-pulling groove outside the bottle mouth, and the lower end of the inner sleeve is provided with a plurality of notches extending to the upper part of the anti-pulling boss so that the lower end of the inner sleeve can elastically expand outwards to be clamped into the anti-pulling groove outside the bottle mouth. Further, the top of the anti-pulling boss is in a plane structure. Further, a guide inclined plane for pushing down and guiding is arranged at the bottom of the anti-pulling boss. Further, the inner sleeve comprises an upper sleeve and a lower sleeve, and the upper sleeve and the lower sleeve are formed by integrally injection molding two materials. Further, the upper sleeve is made of PET, and the lower sleeve is made of PC. The invention also provides a bottle cap, which comprises the inner sleeve of any one of the above. The invention also provides a wine bottle, which comprises the bottle cap. The technical scheme of the invention has at least the advantages and beneficial effects that the lower end of the inner sleeve is provided with the plurality of notches extending to the upper part of the anti-pulling boss, so that the lower end of the inner sleeve can be outwards elastically expanded when being installed, the anti-pulling boss can be ensured to be smoothly clamped into the anti-pulling groove at the outer side of the bottle mouth, after the installation is finished, the lower end of the inner sleeve can not be outwards expanded when being strongly pulled out due to the limit constraint of the outer part of the inner sleeve by other parts (such as the outer cover), and meanwhile, the anti-pulling boss has larger self rigidity and smaller elastic deformation capacity compared with a claw structure which is elastically assembled by the inner sleeve in the prior art, and can be firmly limited in the anti-pulling groove when being strongly pulled out by external force (unless the bottle mouth is damaged), thereby effectively solving the problems that the claw is too high in elasticity and is easy to be separated from the bottle mouth when being strongly pulled out in the prior art, and further improving the anti-pulling performance of the bottle cap. Drawings FIG. 1 is a schematic view of an anti-pulling inner sleeve according to the prior art; FIG. 2 is a schematic view of the structure of a bottle mouth of a bottle according to the prior art; fig. 3 is a schematic structural view of an anti-pulling inner sleeve provided in embodiment 1; FIG. 4 is a top view of FIG. 3; FIG. 5 is a cross-sectional view A-A of FIG. 4; FIG. 6 is a schematic diagram showing the connection structure between the inner sleeve and the bottle body in example 1; FIG. 7 is a schematic structural view of an anti-pulling inner sleeve provided in embodiment 2; fig. 8 is a use state diagram of a bottle cap according to embodiment 3; The reference sign is 1-i