Bottle cap with good theft-proof performance

Abstract

The utility model provides a bottle cap with good anti -theft performance, including bottle cap main part and the anti -theft ring connected through the connecting bridge. Bottle cap main part realizes multiple sealing to bottle mouth through inner and outer sealing ring and two hollow convex members, and the inner sealing ring is attached to the inner wall of bottle mouth to enhance stability, and the outer sealing ring cooperates with the reinforcing rib to form a support frame, disperses pressure, improves the anti -deformation ability, and the hollow convex member can elastically buffer stress fluctuation, improves sealing reliability. Multiple anti -theft bosses are arranged in the inner peripheral wall of the anti -theft ring in a ring shape, and the bosses are connected by connecting ribs, and a convex anti -theft buckle is arranged at the top of the connecting rib at a predetermined position, forming a multi -point blocking structure, improving the anti -theft resistance, preventing illegal opening, dispersing external force, enhancing the rigidity of the inner wall, reducing the risk of deformation and damage, and ensuring the reliability during transportation and storage. Therefore, the bottle cap with good anti -theft performance provided by the application can ensure multiple sealing while having excellent anti -theft performance and long -term use reliability.

Description

Technical Field

[0001] This utility model relates to the field of bottle cap technology, specifically to a bottle cap with good anti-theft performance. Background Technology

[0002] Bottled water for water dispensers is typically packaged in large-capacity plastic containers with caps at the opening for sealing and protection. These caps must not only prevent leakage during transportation, handling, and storage, but also withstand the pressure of the water inside the container when the dispenser is inverted, maintaining a long-term seal. Furthermore, with the increasing prevalence of bottled water, preventing illegal refilling and counterfeiting of the containers has become a crucial requirement in cap design.

[0003] Most existing water dispenser bottle caps use a one-piece injection-molded structure with an anti-theft ring. The anti-theft ring is connected to the bottle cap body via a connecting bridge, which breaks when the user opens the bottle for the first time, thus achieving a one-time use anti-theft effect. However, in practical applications, existing bottle caps still have some shortcomings. First, the sealing structure of traditional water bottle caps is relatively simple, generally relying on a single-layer sealing ring to fit the bottle opening. When the bottle is subjected to external impact during transportation or storage, or when the water dispenser is installed upside down and subjected to water pressure, it is easy to cause poor sealing or even leakage. Second, the existing anti-theft ring and bottle opening connection structure is not strong enough. Some anti-theft rings may not completely break off from the bottle cap body when opened, and there is even a possibility that the bottle cap body and anti-theft ring can be forcibly detached intact by external force, allowing for illegal refilling, affecting the safety of drinking water and consumer trust. Therefore, it is necessary to provide a bottle cap with better sealing effect and more reliable anti-theft performance. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this utility model provides a bottle cap with good anti-theft performance, which effectively improves the problems of poor sealing effect and anti-theft performance of some traditional bottle caps.

[0005] A bottle cap with good anti-theft performance includes a bottle cap body and an anti-theft ring connected to the bottle cap body via a connecting bridge. The bottle cap body includes a top surface and a side wall connected to the top surface. A circular through-hole is formed in the middle of the top surface, extending towards the side wall. A tearable sealing strip is provided at the bottom of the circular through-hole. A bottle cap opening is formed at the end of the side wall away from the top surface. The inner wall of the side wall has internal threads. An inner sealing ring, an outer sealing ring, and two hollow protrusions are provided on the inner side wall of the top surface, extending towards the bottle cap opening. The inner sealing ring includes an inner sealing ring body and a protrusion located on the side of the inner sealing ring body near the side wall. The outer sealing ring has... A plurality of reinforcing ribs are provided between the inner sealing ring and the side wall of the bottle cap, placed between the outer sealing ring and the bottle cap body on the side wall away from the inner sealing ring. The reinforcing ribs are evenly distributed in a ring at the connection between the top surface of the bottle cap and the side wall of the bottle cap, and the reinforcing ribs are connected to the side wall of the outer sealing ring away from the inner sealing ring. Two hollow protrusions are provided between the inner sealing ring and the outer sealing ring and are connected to each other. An anti-theft ring is connected to the side wall of the bottle cap away from the top surface of the bottle cap. A plurality of anti-theft protrusions are provided in a ring on the inner peripheral wall of the anti-theft ring. Connecting ribs are provided between the anti-theft protrusions. A convex anti-theft buckle is provided within a predetermined distance corresponding to the top of the connecting ribs inside the anti-theft ring.

[0006] Preferably, the top surface of the sealing sheet has a boss protruding upwards.

[0007] Preferably, the internal thread is configured as a uniformly distributed three-thread thread.

[0008] Preferably, the protrusion is an arc-shaped protrusion or a triangular protrusion with an arc-shaped tip.

[0009] Preferably, the interior of the hollow protrusion is a through cavity.

[0010] Preferably, the anti-theft protrusion is a strip-shaped anti-theft protrusion with a fan-shaped cross-section, and the arc-shaped surface of the anti-theft protrusion is opposite to the inner surface of the anti-theft ring.

[0011] Preferably, the cross-section of the convex anti-theft buckle is an arc-shaped or triangular structure.

[0012] Preferably, the distance between the axis of the anti-theft protrusion along its length and the axis of the convex anti-theft buckle along its length is 0.3 to 1.2 mm.

[0013] Preferably, the connecting bridge is a plurality of thin bridges evenly distributed, and the thin bridges are provided with weakening grooves.

[0014] Preferably, the outer peripheral wall of the inner sealing ring is provided with a rubber layer.

[0015] Preferably, the outer wall of the bottle cap sidewall is provided with several vertical reinforcing ribs.

[0016] Compared with the prior art, the present invention has the following beneficial effects: This utility model provides a bottle cap with good anti-theft performance, comprising a bottle cap body and an anti-theft ring connected to the bottle cap body via a connecting bridge. The bottle cap body achieves multiple seals on the bottle opening through the cooperation of an inner sealing ring, an outer sealing ring, and two hollow protrusions, ensuring the reliability of the seal during liquid storage and transportation. The inner sealing ring body and its protrusion near the side wall of the bottle cap can tightly fit the inner wall of the bottle opening, enhancing the sealing stability; the outer sealing ring is disposed between the inner sealing ring and the side wall of the bottle cap, achieving a close seal on the outer wall of the bottle opening. The reinforcing ribs on the outer side of the outer sealing ring can effectively disperse the force on the top and side walls of the bottle cap, improving the deformation resistance of the outer sealing ring under external force, thereby maintaining good sealing performance. The reinforcing ribs are evenly distributed in a ring, connecting the top surface of the bottle cap to the side wall, and simultaneously connecting to the outer side wall of the outer sealing ring, forming a support frame. This allows the pressure to be evenly distributed in multiple directions when the bottle cap is compressed, impacted, or squeezed, reducing local stress concentration, thereby improving the rigidity and durability of the overall bottle cap structure. The two hollow protrusions clamp the top surface of the bottle neck. The hollow structure of these protrusions allows for elastic deformation under stress, thus buffering pressure fluctuations during assembly or use, reducing stress concentration at the bottle neck and cap, and improving sealing stability. Secondly, multiple anti-theft protrusions are arranged in a ring on the inner circumference of the tamper-evident ring. These protrusions are interconnected by connecting ribs, forming a stable ring support system. A convex anti-theft buckle is positioned at a predetermined distance from the top of the connecting rib within the tamper-evident ring. This convex buckle and the anti-theft protrusions form a multi-point blocking structure on the inner wall, increasing anti-theft resistance and preventing the tamper-evident ring from being pried open or detached before initial opening, effectively preventing illegal refilling. Furthermore, the connecting ribs fix the anti-theft protrusions, enhancing the overall rigidity of the inner wall, making the convex anti-theft buckle and protrusions less prone to deformation or damage under stress, thus ensuring the reliability of the tamper-evident ring during transportation, handling, and storage. Meanwhile, the multi-point stress structure formed by the anti-theft protrusions, connecting ribs, and convex anti-theft buckles can disperse local stress under external forces, reduce the risk of local damage, and improve the overall durability of the anti-theft ring. Therefore, the bottle cap with good anti-theft performance provided by this application ensures multiple seals while also possessing excellent anti-theft performance and long-term reliability. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the anti-theft bottle cap described in this utility model; Figure 2This is a side view of the anti-theft bottle cap of the present invention. Figure 3 This is a bottom view of the anti-theft bottle cap of the present invention. Figure 4 This is a partial cross-sectional structural diagram of the top corner of the bottle cap body described in this utility model.

[0018] in: 10-Bottle cap body, 20-Anti-theft ring, 11-Top surface of bottle cap, 12-Side wall of bottle cap, 13-Circular through-cap hole, 14-Sealing plate, 15-Boss, 16-Internal thread, 17-Inner sealing ring, 18-Outer sealing ring, 19-Hollow protrusion, 171-Inner sealing ring body, 172-Protrusion, 173-Reinforcing rib, 21-Anti-theft protrusion, 22-Connecting rib, 23-Convex anti-theft buckle, 24-Vertical reinforcing rib. Detailed Implementation

[0019] The embodiments described below are merely some embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0020] See Figures 1-4 This embodiment provides a bottle cap with good anti-theft performance, which includes a bottle cap body 10 and an anti-theft ring 20 connected to the bottle cap body 10 through a connecting bridge.

[0021] Specifically, the bottle cap body 10 includes a bottle cap top surface 11 and a bottle cap sidewall 12 connected to the bottle cap top surface 11. A circular through-hole 13 is formed in the middle of the bottle cap top surface 11 towards the bottle cap sidewall 12. A tearable sealing sheet 14 is provided at the bottom of the circular through-hole 13. A bottle cap opening is formed at the end of the bottle cap sidewall 12 away from the bottle cap top surface 11. The inner wall of the bottle cap sidewall 12 is provided with an internal thread 16. An inner sealing ring 17, an outer sealing ring 18, and two hollow protrusions 19 are provided on the inner sidewall of the bottle cap top surface 11 towards the bottle cap opening. The inner sealing ring 17 includes an inner sealing ring body 171 and a sealing ring 18 disposed in the inner sidewall of the bottle cap top surface 11. A sealing ring body 171 has a protrusion 172 near the side wall 12 of the bottle cap. The outer sealing ring 18 is disposed between the inner sealing ring 17 and the side wall 12 of the bottle cap. A plurality of reinforcing ribs 173 are provided between the side wall of the outer sealing ring 18 away from the inner sealing ring 17 and the bottle cap body 10. The reinforcing ribs 173 are evenly distributed in a ring at the connection between the top surface 11 of the bottle cap and the side wall 12 of the bottle cap, and the reinforcing ribs 173 are connected to the side wall of the outer sealing ring 18 away from the inner sealing ring 17. Two hollow protrusions 19 are disposed between the inner sealing ring 17 and the outer sealing ring 18 and the two hollow protrusions 19 are connected.

[0022] Specifically, the anti-theft ring 20 is connected to the side of the bottle cap sidewall 12 away from the top surface 11 of the bottle cap. Multiple anti-theft protrusions 21 are annularly protruding on the inner peripheral wall of the anti-theft ring 20. Connecting ribs 22 are provided between the anti-theft protrusions 21. A convex anti-theft buckle 23 is provided in the anti-theft ring 20 within a predetermined distance corresponding to the top of the connecting ribs 22.

[0023] Preferably, the top surface of the sealing sheet 14 has an upwardly protruding boss 15. When the bottle cap body contacts the water dispenser, the boss 15 first abuts against the surface of the water dispenser, and under the action of external force, it is pushed upward, causing the sealing sheet 14 at the location of the boss 15 to break or tear first, and then guiding the sealing sheet 14 as a whole to be gradually torn apart, so that the liquid inside the bottle can flow out smoothly. It should be noted that... Preferably, the internal thread 16 is configured as a uniformly distributed three-thread thread. The three-thread structure can significantly increase the lead under the same pitch conditions, reducing the number of rotations required for tightening and improving assembly efficiency; the multiple evenly distributed engagement points can more evenly transmit the axial preload to the top surface 11 of the cap and the sealing structure, reducing local stress and the risk of jamming, thereby reducing the opening / tightening torque and improving the smoothness of repeated opening and closing.

[0024] Preferably, the protrusion 172 is an arc-shaped protrusion 172 or a triangular protrusion 172 with an arc-shaped tip. That is, the part of the protrusion 172 that contacts the inner wall of the bottle opening is arc-shaped. The arc-shaped contact surface can achieve a flexible transition fit when tightening the bottle cap, and will not cause stress concentration due to excessive local pressure, thereby effectively avoiding cracks or wear on the inner wall of the bottle opening. At the same time, the arc structure has good self-adaptability during the stress process, and can automatically compensate for the slight dimensional differences of the inner wall of the bottle opening, further improving the fit and sealing reliability between the sealing ring and the bottle opening. In addition, the arc transition can reduce frictional resistance, making the bottle cap smoother when tightening or unscrewing, reducing wear caused by excessive friction, and extending the service life of the bottle cap.

[0025] Preferably, the hollow protrusion 19 has a through cavity inside, and multiple air holes are provided on the side of the hollow protrusion 19. The connection between two hollow protrusions 19 is a V-shaped groove. In use, the top of the bottle mouth abuts against the V-shaped groove, which can form a stable sealing fit between the bottle mouth and the hollow protrusion 19. When the bottle cap is tightened, the top of the bottle mouth presses against the V-shaped groove and causes the two hollow protrusions 19 to elastically deform in opposite directions, so that the V-shaped groove area is tightly fitted to the top surface of the bottle mouth, effectively preventing liquid leakage. At the same time, the hollow protrusion 19 is also conducive to adapting to the tolerances generated at the bottle mouth during bottle production, and the sealing effect is better than that of a solid structure. Meanwhile, the V-shaped groove can guide the gas inside the hollow protrusion 19 to be discharged through the air holes after being stressed, so that the pressure generated during the sealing process is released in time, avoiding bottle cap swelling or sealing failure due to pressure accumulation. It can be seen that the design of the hollow protrusion 19 effectively improves the sealing stability of the bottle cap and bottle mouth. It should be noted that the hollow protrusion 19 is a flexible hollow protrusion 19, such as a rubber hollow protrusion 19.

[0026] Preferably, the anti-theft protrusion 21 is a strip-shaped anti-theft protrusion 21 with a fan-shaped cross-section, and the arc-shaped surface of the anti-theft protrusion 21 is opposite to the inner surface of the anti-theft ring 20. The convex anti-theft buckle 23 has an arc-shaped or triangular cross-section.

[0027] Preferably, the distance between the longitudinal axis of the anti-theft protrusion 21 and the longitudinal axis of the convex anti-theft buckle 23 is 0.3 to 1.2 mm. This ensures that the anti-theft protrusion 21 and the convex anti-theft buckle 23 have sufficient interference fit when the bottle cap body is opened to prevent the anti-theft ring 20 from being rotated out, while not affecting the opening operation of the bottle cap body, thereby achieving a balance between anti-theft and ease of use.

[0028] Preferably, the connecting bridge consists of multiple evenly distributed thin bridges, and each thin bridge is provided with a weakening groove. This facilitates the opening of the bottle cap body.

[0029] Preferably, the outer peripheral wall of the inner sealing ring 17 is provided with a rubber layer. During the tightening process of the bottle cap, the rubber layer can achieve flexible compression and fit with the inner wall of the bottle mouth, overcoming the problem of poor sealing caused by the dimensional tolerance or deviation of the bottle mouth; at the same time, the rubber material has good elasticity and resilience, and can automatically restore its shape after being subjected to force, ensuring that the bottle cap can still maintain a reliable seal after repeated opening and closing, and extending the service life of the bottle cap.

[0030] Preferably, the outer wall of the bottle cap sidewall 12 is provided with a plurality of vertical reinforcing ribs 24. This enhances the structural strength and deformation resistance of the bottle cap sidewall 12, prevents deformation caused by external forces during opening or tightening, and improves the durability and stability of the bottle cap during long-term use.

[0031] This invention provides a bottle cap with good anti-theft performance, comprising a bottle cap body 10 and an anti-theft ring 20 connected to the bottle cap body 10 via a connecting bridge. The bottle cap body 10 achieves multiple seals on the bottle opening through the cooperation of an inner sealing ring 17, an outer sealing ring 18, and two hollow protrusions 19, ensuring the reliability of the seal during liquid storage and transportation. The inner sealing ring body 171 and its protrusion 172 near the bottle cap side wall 12 can tightly fit the inner wall of the bottle opening, enhancing the sealing stability; the outer sealing ring 18 is disposed between the inner sealing ring 17 and the bottle cap side wall 12, achieving a close seal on the outer wall of the bottle opening. The reinforcing ribs 173 on the outer side of the outer sealing ring 18 can effectively disperse the force on the top and side walls of the bottle cap, improving the deformation resistance of the outer sealing ring 18 under external force, thereby maintaining good sealing performance. The reinforcing ribs 173 are evenly distributed in a ring, connecting the top surface 11 of the bottle cap to the side wall, and simultaneously connecting to the outer side wall of the outer sealing ring 18 to form a support frame. This allows the pressure to be evenly distributed in multiple directions when the bottle cap is compressed, impacted, or squeezed (during use, the top surface 11 of the bottle cap will be subjected to pressure towards the bottle opening, causing it to indent towards the bottle opening, and consequently, the outer sealing ring 18 will deform away from the bottle opening). This reduces local stress concentration and improves the rigidity and durability of the overall bottle cap structure. The two hollow protrusions 19 clamp the top surface of the bottle opening. Because the hollow structure of the protrusions can generate a certain amount of elastic deformation under force, they buffer pressure fluctuations generated during assembly or use, reducing stress concentration at the bottle opening and cap, and improving sealing stability. Secondly, multiple anti-theft protrusions 21 are arranged in a ring on the inner peripheral wall of the anti-theft ring 20. The anti-theft protrusions 21 are interconnected by connecting ribs 22, forming a structurally stable ring support system. A convex anti-theft buckle 23 is installed at a predetermined distance from the top of the connecting rib 22 inside the anti-theft ring 20. This convex anti-theft buckle 23 and the anti-theft protrusions 21 form a multi-point blocking structure on the inner wall, which not only increases the anti-theft resistance, making the anti-theft ring 20 less susceptible to being pried open or falling off by external force before initial opening, effectively preventing illegal refilling, but also strengthens the overall rigidity of the inner wall by fixing the anti-theft protrusions 21 with the connecting ribs 22. This makes the convex anti-theft buckle 23 and the anti-theft protrusions 21 less prone to deformation or damage under stress, thus ensuring the reliability of the anti-theft ring 20 during transportation, handling, and storage. Simultaneously, the multi-point stress structure formed by the anti-theft protrusions 21, connecting ribs 22, and convex anti-theft buckle 23 can disperse local stress under external force, reducing the risk of local damage and improving the overall durability of the anti-theft ring 20. Therefore, the bottle cap with good anti-theft performance provided in this application ensures multiple seals while also possessing excellent anti-theft performance and long-term reliability.

[0032] The above-disclosed embodiments are merely some preferred embodiments of the present utility model, and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent changes made in accordance with the scope of the present utility model patent application shall still fall within the scope of the present utility model.

Claims

1. A bottle cap with good anti-theft performance, characterized in that: It includes a bottle cap body and an anti-theft ring connected to the bottle cap body via a connecting bridge; The bottle cap body includes a top surface and a side wall connected to the top surface. A circular through-hole is recessed in the center of the top surface towards the side wall. A tearable sealing strip is located at the bottom of the circular through-hole. A bottle cap opening is formed at the end of the side wall away from the top surface. The inner wall of the side wall has internal threads. An inner sealing ring, an outer sealing ring, and two hollow protrusions are provided on the inner side wall of the top surface towards the bottle cap opening. The inner sealing ring includes an inner sealing ring body and a part disposed on the top surface. The inner sealing ring body has a protrusion near the side wall of the bottle cap. The outer sealing ring is disposed between the inner sealing ring and the side wall of the bottle cap. Multiple reinforcing ribs are provided between the side wall of the outer sealing ring away from the inner sealing ring and the bottle cap body. The reinforcing ribs are evenly distributed in a ring at the connection between the top surface of the bottle cap and the side wall of the bottle cap, and the reinforcing ribs are connected to the side wall of the outer sealing ring away from the inner sealing ring. Two hollow protrusions are disposed between the inner sealing ring and the outer sealing ring and are connected to each other. The anti-theft ring is connected to the side wall of the bottle cap away from the top surface of the bottle cap. Multiple anti-theft protrusions are provided in a ring on the inner peripheral wall of the anti-theft ring. Connecting ribs are provided between the anti-theft protrusions. A convex anti-theft buckle is provided in the anti-theft ring at a predetermined distance corresponding to the top of the connecting rib.

2. The bottle cap with good anti-theft performance as described in claim 1, characterized in that, The top surface of the sealing sheet has a protruding boss.

3. The bottle cap with good anti-theft performance as described in claim 1, characterized in that, The internal thread is configured as a uniformly distributed three-thread thread.

4. The bottle cap with good anti-theft performance as described in claim 1, characterized in that, The protrusion is an arc-shaped protrusion or a triangular protrusion with an arc-shaped tip.

5. The bottle cap with good anti-theft performance as described in claim 1, characterized in that, The interior of the hollow protrusion is a through cavity.

6. The bottle cap with good anti-theft performance as described in claim 1, characterized in that, The anti-theft protrusion is a strip-shaped anti-theft protrusion with a fan-shaped cross-section, and the arc-shaped surface of the anti-theft protrusion is opposite to the inner surface of the anti-theft ring.

7. The bottle cap with good anti-theft performance as described in claim 1, characterized in that, The cross-section of the convex anti-theft buckle is arc-shaped or triangular.

8. The bottle cap with good anti-theft performance as described in claim 1, characterized in that, The distance between the axis of the anti-theft protrusion along its length and the axis of the convex anti-theft buckle along its length is 0.3 to 1.2 mm.

9. The bottle cap with good anti-theft performance as described in claim 1, characterized in that, The connecting bridge consists of multiple thin bridges evenly distributed, and each thin bridge is provided with a weakening groove.

10. The bottle cap with good anti-theft performance as described in claim 1, characterized in that, The outer peripheral wall of the inner sealing ring is provided with a rubber layer.

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