Bottle mouth bottle cap combination with secondary sealing structure

Abstract

The utility model discloses a bottle mouth bottle lid combination with secondary sealing structure relates to bottle lid technical field, including bottle mouth body, the outside of bottle mouth body is integrally formed with first thread strip, one end of first thread strip is fixedly connected with bottle mouth thread rotation -stopping block, the outside of bottle mouth body is screwed with bottle lid body, the inside of bottle lid body is integrally formed with second thread strip, second thread strip is screwed with first thread strip, one end of second thread strip is fixedly connected with bottle lid thread rotation -stopping block, this bottle mouth bottle lid combination with secondary sealing structure, the top of bottle mouth body is integrally formed with inclined ring, and the top of inclined ring is opened with seal groove, and seal groove evenly distributes, the inner chamber top of bottle lid body is integrally formed with sealing ring, and the structure design is reasonable, can effectively improve the sealing effect of bottle mouth and bottle lid joint gap, when using, when pouring internal liquid, not easy to overflow, make bottle mouth clean not keep.

Description

Technical Field

[0001] This utility model relates to the field of bottle cap technology, specifically to a bottle cap and bottle mouth assembly with a secondary sealing structure. Background Technology

[0002] The combination of bottle neck and cap is a crucial functional component in packaging design. The bottle neck, as the container opening, determines the sealing method and compatibility through its diameter, thread, or snap-fit ​​structure; while the cap, through tightening, pressing, or flipping, achieves sealing protection, anti-counterfeiting, and convenient opening. Both require precise matching—the thread precision and edge smoothness of the bottle neck affect the seal, while the inner lining material (such as PE, silicone) and structure (such as child safety locks, spray valves) of the cap further ensure leak-proof, freshness preservation, or special functions. From the simple screw caps of mineral water bottles to the magnetic closure of perfume bottles, the combination of different materials (plastic, metal, glass) and innovative designs (smart sensors, biodegradable materials) balances safety, user experience, and environmental protection needs.

[0003] From a technical perspective, the fit tolerances between bottle caps and necks, the method of embedding sealing rings (such as O-rings and inner gaskets), and the opening torque all require precise calculations. For example, the screw caps for beverage bottles need to balance sealing force with the opening comfort of consumers (especially the elderly), typically with the torque controlled between 0.6-2.2 N·m. In the future, smart bottle caps integrating RFID tags or freshness indicators will further expand their functional boundaries, upgrading traditional packaging into information interaction terminals. In short, the bottle cap and neck assembly is both a crystallization of basic industry and a microcosm of interdisciplinary innovation, continuously driving the packaging industry towards safety, intelligence, and sustainability.

[0004] Most existing bottle cap and neck assemblies use a single threaded connection, which can only achieve a single seal. This is prone to thread wear due to manufacturing errors or long-term use, affecting the sealing effect and causing liquid leakage or external contamination. Furthermore, the existing bottle cap and neck assemblies have a simple outlet design and lack flow guiding function, making it difficult to accurately control the flow rate when pouring liquid. This causes liquid to easily overflow along the outer wall of the bottle neck, resulting in waste and potential contamination of the container surface. Therefore, a new technical solution is needed to address these issues. Utility Model Content

[0005] The technical solutions of the present utility model 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 utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a bottle mouth and cap assembly with a secondary sealing structure, comprising a bottle mouth body, a first threaded strip integrally formed on the outer side of the bottle mouth body, a bottle mouth thread anti-rotation block fixedly connected to one end of the first threaded strip, a bottle cap body screwed onto the outer side of the bottle mouth body, a second threaded strip integrally formed on the inner side of the bottle cap body, the second threaded strip being screwed onto the first threaded strip, and a bottle cap thread anti-rotation block fixedly connected to one end of the second threaded strip.

[0007] Preferably, the top of the bottle mouth body is integrally formed with an inclined ring, and the top of the inclined ring has a sealing groove, which is evenly distributed. Multiple sealing partitions are formed by the sealing groove on the inclined ring and the sealing coil to seal the bottle mouth and the bottle cap.

[0008] Preferably, a sealing ring is integrally formed on the top of the inner cavity of the bottle cap body. The sealing ring is engaged with the inclined ring, and multiple sealing partitions are formed by the sealing groove on the inclined ring and the sealing coil to seal the bottle mouth and the bottle cap.

[0009] Preferably, a sealing coil is integrally formed on the top of the inner cavity of the bottle cap body, and the sealing coils are arranged in sequence. The sealing coils are engaged with the sealing grooves, and multiple sealing partitions are formed by the engagement of the sealing coils with the sealing grooves to seal the connection between the bottle mouth and the bottle cap.

[0010] Preferably, the top of the bottle cap body is integrally formed with a liquid outlet, the outer side of the liquid outlet is integrally formed with a guide groove, and the outer side of the liquid outlet is integrally formed with a first convex ring, so that the discharged liquid is guided by the guide groove on the liquid outlet.

[0011] Preferably, a folding cap is rotatably connected to the outer side of the bottle cap body, and a groove is opened on the outer side of the folding cap to facilitate opening the folding cap.

[0012] Preferably, a flip-top post is fixedly connected to the inner side of the flip-top, and a second convex ring is integrally formed on the outer side of the flip-top post. The second convex ring engages with the first convex ring, thereby connecting the flip-top and the bottle cap and sealing the gap between the flip-top and the bottle cap.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This bottle cap and bottle neck assembly with a secondary sealing structure can achieve a secondary seal at the connection between the bottle neck and the bottle cap through the cooperation of multiple sealing grooves and sealing rings. This prevents the sealing effect from being affected by thread wear due to processing errors or long-term use, thus preventing liquid leakage or external contamination. This effectively improves the sealing effect at the connection between the bottle neck and the bottle cap.

[0015] 2. This bottle cap and neck assembly with a secondary sealing structure can guide the liquid flow when pouring through a fluid guiding mechanism, preventing the liquid from overflowing along the outer wall of the bottle neck due to difficulty in accurately controlling the flow rate, which would waste the liquid and contaminate the container surface. As a result, when pouring out the liquid, it is not easy for it to overflow, keeping the bottle neck clean and free of residue. Attached Figure Description

[0016] Figure 1 This is a front-view three-dimensional structural diagram of a bottle mouth and cap assembly with a secondary sealing structure proposed in this utility model.

[0017] Figure 2 This is a front-view three-dimensional structural diagram of a bottle cap assembly with a secondary sealing structure proposed in this utility model.

[0018] Figure 3 This is a schematic diagram of a bottle cap flipping structure for a bottle mouth and bottle cap assembly with a secondary sealing structure proposed in this utility model.

[0019] Figure 4 This is a frontal cross-sectional view of a bottle cap and mouth assembly with a secondary sealing structure proposed in this utility model.

[0020] Figure 5 This is a schematic diagram of the front view of the unfolded folding cap of a bottle mouth and cap assembly with a secondary sealing structure proposed in this utility model.

[0021] Figure 6 This is a frontal cross-sectional view of a bottle cap assembly with a secondary sealing structure proposed in this utility model.

[0022] Figure 7 This is a frontal cross-sectional view of the bottle mouth body of a bottle mouth and cap assembly with a secondary sealing structure proposed in this utility model.

[0023] In the diagram: 100, bottle neck body; 110, first threaded strip; 111, bottle neck thread anti-rotation block; 120, tilting ring; 121, sealing groove; 200, bottle cap body; 210, second threaded strip; 211, bottle cap thread anti-rotation block; 220, sealing ring; 230, sealing coil; 240, liquid outlet; 241, flow guide groove; 250, first convex ring; 260, folding cap; 261, groove; 270, folding cap post; 271, second convex ring. Detailed Implementation

[0024] The technical solutions of the present utility model 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 utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1: Please refer to again Figure 1-7 This utility model provides a bottle mouth and cap assembly with a secondary sealing structure, including a bottle mouth body 100, a first threaded strip 110 integrally formed on the outer side of the bottle mouth body 100, a bottle mouth thread anti-rotation block 111 fixedly connected to one end of the first threaded strip 110, an inclined ring 120 integrally formed on the top of the bottle mouth body 100, a sealing groove 121 opened on the top of the inclined ring 120, and the sealing grooves 121 are evenly distributed, and a sealing ring 220 integrally formed on the top of the inner cavity of the cap body 200, the sealing ring 220 being engaged with the inclined ring 120.

[0026] Specifically, after screwing the bottle cap body 200 to the bottle mouth body 100, the sealing ring 220 installed on the bottle cap body 200 and the inclined ring 120 installed on the bottle mouth body 100 are fitted together, and the gap between the sealing ring 220, the inclined ring 120 and the bottle cap body 200 are sealed. Since the inclined ring 120 has a certain inclination angle, after the heat sealing film at the bottle mouth body 100 is torn, the bottle mouth body 100 can still maintain a certain angle, which is conducive to secondary sealing of the bottle mouth. At the same time, the sealing coil 230 installed on the bottle cap body 200 will also extend into the sealing groove 121 opened on the inclined ring 120. The sealing coil 230 and the sealing groove 121 form multiple sealing partitions to seal the gap at the connection between the bottle mouth body 100 and the bottle cap body 200. In addition, the second convex ring 271 on the flip cap post 270 and the first convex ring 250 on the liquid outlet 240 seal the gap between the flip cap 260 and the liquid outlet 240.

[0027] Example 2: Please refer to again Figure 1-7A bottle cap body 200 is screwed to the outer side of the bottle mouth body 100. A second threaded strip 210 is integrally formed on the inner side of the bottle cap body 200. The second threaded strip 210 is screwed to the first threaded strip 110. One end of the second threaded strip 210 is fixedly connected to a bottle cap thread anti-rotation block 211. A sealing coil 230 is integrally formed on the top of the inner cavity of the bottle cap body 200, and the sealing coils 230 are arranged sequentially. The sealing coils 230 are engaged with the sealing groove 121. The top of the bottle cap body 200... The bottle cap body 200 is integrally formed with a liquid outlet 240. A guide groove 241 is integrally formed on the outer side of the liquid outlet 240. A first convex ring 250 is integrally formed on the outer side of the liquid outlet 240. A folding cap 260 is rotatably connected to the outer side of the bottle cap body 200. A groove 261 is opened on the outer side of the folding cap 260. A folding cap post 270 is fixedly connected to the inner side of the folding cap 260. A second convex ring 271 is integrally formed on the outer side of the folding cap post 270. The second convex ring 271 is engaged with the first convex ring 250.

[0028] Specifically, when pouring liquid, the folding cap 260 is folded over using the groove 261, so that the folding cap 260 is disconnected from the outlet 240. Then, when pouring liquid, the liquid flowing out of the bottle mouth body 100 is guided by the guide groove 241 on the outlet 240, which prevents the liquid from overflowing along the outer wall of the bottle mouth due to difficulty in accurately controlling the flow rate, thus avoiding liquid waste and contamination of the container surface.

[0029] Working principle: After screwing the bottle cap body 200 to the bottle mouth body 100, the sealing ring 220 installed on the bottle cap body 200 fits into the inclined ring 120 installed on the bottle mouth body 100. The gap between the sealing ring 220, the inclined ring 120 and the bottle cap body 200 is sealed. Since the inclined ring 120 has a certain inclination angle, after the heat sealing film at the bottle mouth body 100 is torn, the bottle mouth body 100 can still maintain a certain angle, which is conducive to secondary sealing of the bottle mouth. At the same time, the sealing coil 230 installed on the bottle cap body 200 will also extend into the sealing groove 121 opened on the inclined ring 120. The sealing coil 230 and the sealing groove 121 form multiple sealing partitions to seal the gap at the connection between the bottle mouth body 100 and the bottle cap body 200. In addition, the second convex ring 271 on the flip cap post and the first convex ring 250 on the liquid outlet 240 seal the gap between the flip cap 260 and the liquid outlet 240.

[0030] When pouring liquid, the folding cap 260 is folded over by using the groove 261, so that the folding cap 260 is disconnected from the outlet 240. Then, when pouring liquid, the liquid flowing out of the bottle mouth body 100 is guided by the flow guide groove 241 opened on the outlet 240, which prevents the liquid from overflowing along the outer wall of the bottle mouth due to difficulty in accurately controlling the flow rate when pouring liquid, thus causing liquid waste and contamination of the container surface.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A bottle cap and neck assembly with a secondary sealing structure, comprising a bottle neck body (100), characterized in that, The outer side of the bottle mouth body (100) is integrally formed with a first threaded strip (110), and one end of the first threaded strip (110) is fixedly connected to a bottle mouth thread anti-rotation block (111). The bottle cap body (200) is screwed to the outside of the bottle mouth body (100), and a second threaded strip (210) is integrally formed on the inside of the bottle cap body (200). The second threaded strip (210) is screwed to the first threaded strip (110), and a bottle cap thread anti-rotation block (211) is fixedly connected to one end of the second threaded strip (210).

2. The bottle cap and neck assembly with a secondary sealing structure as described in claim 1, characterized in that, The top of the bottle mouth body (100) is integrally formed with an inclined ring (120), and the top of the inclined ring (120) has a sealing groove (121), and the sealing groove (121) is evenly distributed.

3. The bottle cap and neck assembly with a secondary sealing structure as described in claim 2, characterized in that, A sealing ring (220) is integrally formed on the top of the inner cavity of the bottle cap body (200), and the sealing ring (220) is engaged with the inclined ring (120).

4. The bottle cap and neck assembly with a secondary sealing structure as described in claim 2, characterized in that, The top of the inner cavity of the bottle cap body (200) is integrally formed with a sealing coil (230), and the sealing coils (230) are arranged in sequence, and the sealing coils (230) are engaged with the sealing groove (121).

5. A bottle cap and neck assembly with a secondary sealing structure as described in claim 4, characterized in that, The top of the bottle cap body (200) is integrally formed with a liquid outlet (240), the outer side of the liquid outlet (240) is integrally formed with a guide groove (241), and the outer side of the liquid outlet (240) is integrally formed with a first convex ring (250).

6. The bottle cap and neck assembly with a secondary sealing structure as described in claim 5, characterized in that, A folding cap (260) is rotatably connected to the outer side of the bottle cap body (200), and a groove (261) is opened on the outer side of the folding cap (260).

7. The bottle cap and neck assembly with a secondary sealing structure as described in claim 6, characterized in that, The inner side of the folding cover (260) is fixedly connected to a folding cover post (270), and the outer side of the folding cover post (270) is integrally formed with a second protrusion (271), which engages with the first protrusion (250).

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