A spiral-type integrated bottle cap

Abstract

This utility model discloses a spiral-type integrated bottle cap, including a bottle cap body, which is installed on the bottle mouth. The bottle cap body includes an upper part of the bottle cap and an anti-theft ring installed below the upper part of the bottle cap. The upper part of the bottle cap and the anti-theft ring are connected by a U-shaped connecting part. The U-shaped connecting part includes a connecting portion, one end of which is connected to the upper part of the bottle cap, and the other end is connected to the anti-theft ring. The U-shaped connecting part also includes a first arc-shaped groove on one side of the connecting portion and a second arc-shaped groove on the other side of the connecting portion. This utility model provides a spiral-type integrated bottle cap, which optimizes the bottle cap structure, making the connecting portion of the bottle cap less prone to breakage and enabling one-time in-mold injection molding. It also increases the opening angle of the bottle cap and reduces manufacturing and recycling costs.

Description

Technical Field

[0001] This utility model relates to the field of bottle cap technology, and in particular to a spiral integrated bottle cap. Background Technology

[0002] Currently, the caps of mineral water bottles, cola bottles, and other beverage bottles commonly found on the market are detached from the bottle body when consumers drink from them. This makes it inconvenient for consumers to hold the cap in their hand or place it elsewhere. Moreover, the caps, which are detached from the bottle body, are prone to rolling off and getting lost, causing inconvenience to consumers and increasing the difficulty of recycling, which can easily lead to environmental pollution.

[0003] Chinese utility model patent CN206494300U discloses a bottle cap that is easy to recycle, comprising: a cap body, the cap body including an upper cap and a lower cap corresponding to the upper cap; the lower cap is detachably mounted on a container bottle adapted to the cap body, and the lower cap has a liquid outlet for discharging liquid; the upper cap is rotatably connected to the lower cap, and when the upper cap and the lower cap are engaged, the upper cap seals the liquid outlet; a recycling structure, the recycling structure including an easy-tear ring, the easy-tear ring being detachably fitted onto the container bottle, and the easy-tear ring being connected to one end of the lower cap so that the lower cap is connected to the container bottle. Although this bottle cap can achieve the function of keeping the bottle cap from detaching from the bottle body, the opening angle of this bottle cap structure is fixed, and the structure is complex, making it impossible to mold in one piece, resulting in high manufacturing costs; during recycling, the bottle cap still needs to be removed from the container bottle, making the recycling process cumbersome and time-consuming, thus increasing recycling costs. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing bottle cap structure being complex and having a small opening angle, and to provide a spiral integrated bottle cap. By optimizing the bottle cap structure, the connecting part of the bottle cap is not easy to break, and it can be molded in one go. At the same time, the opening angle of the bottle cap is increased, and the manufacturing cost and recycling cost are reduced.

[0005] To achieve the above objectives, this utility model provides a spiral-type integrated bottle cap, comprising a bottle cap body, which is installed on the bottle mouth of a bottle. The bottle cap body includes an upper part of the bottle cap and an anti-theft ring installed below the upper part of the bottle cap. The upper part of the bottle cap and the anti-theft ring are connected by a U-shaped connecting part, which includes a connecting part, one end of which is connected to the upper part of the bottle cap and the other end of which is connected to the anti-theft ring. The U-shaped connecting part also includes a first arc-shaped groove on one side of the connecting part and a second arc-shaped groove on the other side of the connecting part.

[0006] Preferably, the first arc-shaped groove and the second arc-shaped groove are connected by a connecting groove. The connecting groove surrounds the upper part of the bottle cap, with one end connected to the first arc-shaped groove and the other end connected to the second arc-shaped groove. A plurality of connecting ribs are evenly distributed on the connecting groove. One end of each connecting rib is connected to the upper part of the bottle cap, and the other end is connected to the anti-theft ring. The groove gap between the first arc-shaped groove, the second arc-shaped groove, and the connecting groove is between 0.10 mm and 0.20 mm.

[0007] Preferably, both the bottle cap body and the bottle body are made of PET material, and the bottle cap body is formed by one-time in-mold injection molding.

[0008] Preferably, the wall thickness of the upper part of the bottle cap and the anti-theft ring is between 0.3 mm and 0.5 mm, and the wall thickness of the Z-shaped connector is between 0.15 mm and 0.25 mm.

[0009] Preferably, the connecting part includes a first transition part connected to the upper part of the bottle cap and a second transition part connected to the anti-theft ring.

[0010] Preferably, the upper outer wall of the bottle cap is provided with a raised interface and a smooth interface. The smooth interface is provided with a zigzag connecting part, and the raised interface is provided with a plurality of raised anti-slip protrusions, which are arranged vertically at intervals along the circumference.

[0011] Preferably, a first limiting ring and a second limiting ring are spaced apart on the bottle opening, and an anti-theft ring is disposed between the first limiting ring and the second limiting ring. The inner sidewall of the anti-theft ring is provided with a plurality of fixing pieces, and the fixing pieces are restricted between the first limiting ring and the second limiting ring.

[0012] Preferably, the upper inner wall of the bottle cap is provided with an internal thread, and the bottle mouth is provided with an external thread. The internal thread and the external thread are threadedly connected, so that the upper part of the bottle cap is screwed onto the bottle mouth.

[0013] Preferably, the anti-theft ring is provided with a lifting groove, which is located below the first arc-shaped groove and the second arc-shaped groove, and a plurality of connecting ribs are evenly distributed on the lifting groove; the arc length of the lifting groove is greater than the arc length of the lower part of the U-shaped connecting part.

[0014] Preferably, the lower part of the lifting groove is provided with a plurality of receiving grooves, and the upper part of the lifting groove is provided with a plurality of insertion protrusions. The insertion protrusions are inserted into the receiving grooves, and the groove gap of the lifting groove is between 0.10mm and 0.20mm.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] Compared to existing integrated bottle caps, this invention achieves one-piece molding. When the top of the bottle cap is unscrewed, the U-shaped connecting part bends into an arc shape, connecting the top of the bottle cap and the anti-theft ring. The U-shaped connecting part detaches from the top of the bottle cap, allowing it to extend or bend. Without affecting the quality of the screw-on integrated bottle cap, it also increases the distance between the top of the bottle cap and the anti-theft ring when the top of the bottle cap is opened; or it increases the opening angle of the top of the bottle cap, making the U-shaped connecting part more curved. It does not affect the pouring of liquid from the bottle and is not easily broken. The screw-on integrated bottle cap also prevents the top of the bottle cap from falling off. This invention can be molded in one piece, resulting in low cost, short production cycle, and mass production capability. Furthermore, the bottle cap body and the bottle body are made of the same material, thereby reducing manufacturing and recycling costs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a front structural diagram of a spiral-type integrated bottle cap provided by this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of a spiral-type integrated bottle cap provided by this utility model;

[0020] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 This is a schematic diagram of the bottom structure of a spiral-type integrated bottle cap provided by this utility model;

[0022] Figure 5 This is a schematic diagram of the structure of a spiral-type integrated bottle cap that is assembled with the bottle body and opened according to this utility model;

[0023] Figure 6 This is a cross-sectional view of a spiral-type integrated bottle cap that is assembled with the bottle body and opened, according to this utility model.

[0024] The diagram includes:

[0025] 1. Bottle cap body; 2. Bottle body; 3. Bottle mouth; 11. Upper part of bottle cap; 12. Anti-theft ring; 5. Z-shaped connecting part; 51. Connecting part; 52. First arc-shaped groove; 53. Second arc-shaped groove; 41. Connecting groove; 42. Connecting rib; 511. First transition part; 512. Second transition part; 111. Raised interface; 112. Smooth interface; 113. Anti-slip protrusion; 21. First limiting ring; 22. Second limiting ring; 121. Fixing piece; 71. Internal thread; 72. External thread; 81. Lifting groove; 91. Receiving groove; 92. Insertion protrusion. Detailed Implementation

[0026] The technical solution of this embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiment is one embodiment of the present invention, and not all embodiments thereof. Based on this embodiment of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Please refer to Figures 1 to 6 This utility model provides a spiral integrated bottle cap.

[0028] like Figure 1 As shown, the integrated bottle cap includes a bottle cap body 1, which can be integrally injection molded. The bottle cap body 1 can be connected to the bottle body 2. The bottle body 2 has a bottle mouth 3, and the bottle cap body 1 is screwed onto the bottle mouth 3 via a screw structure. Furthermore, the bottle cap body 1 can be mounted on a beverage bottle for easy carrying and use. In addition, the integrated design of the bottle cap body 1 allows it to remain intact, ensuring a more secure connection with the bottle body 2 and preventing it from falling off or being lost; it also facilitates recycling and meets environmental protection requirements.

[0029] like Figure 2 As shown, the bottle cap body 1 includes two parts: an upper bottle cap part 11 installed at the top and an anti-theft ring 12 installed at the bottom of the upper bottle cap part 11. The upper bottle cap part 11 and the anti-theft ring 12 are connected by a Z-shaped connecting part 5, which gives the bottle cap body 1 good structural strength and connection stability. It also makes the bottle cap body 1 a whole structure, so that the connection can be maintained when the bottle cap is opened, preventing it from being discarded or lost at will.

[0030] like Figure 1As shown, the U-shaped connecting part 5 includes a connecting part 51, a first arc-shaped groove 52, and a second arc-shaped groove 53. One end of the connecting part 51 is connected to the upper part 11 of the bottle cap, and the other end is connected to the anti-theft ring 12. The first arc-shaped groove 52 is disposed on one side of the connecting part 51, and the second arc-shaped groove 53 is disposed on the other side of the connecting part 51, forming a curved transition structure. At the same time, the connecting part 51 is separated from the upper part 11 of the bottle cap, which facilitates extension or bending deformation, thereby making it easier to open the bottle cap and less prone to breakage.

[0031] The curved transition structure of the connecting part 51 can effectively alleviate the stress concentration problem during the opening process, and improve the convenience and reliability of the bottle cap. At the same time, the symmetrical design of the first arc-shaped groove 52 and the second arc-shaped groove 53 not only enhances the mechanical properties of the structure, but also improves the overall aesthetics, making the product more competitive in the market.

[0032] Furthermore, in order to ensure stable separation of the anti-theft ring 12 from the upper part 11 of the bottle cap when it is opened, a connecting groove 41 is provided between the anti-theft ring 12 and the upper part 11 of the bottle cap. The connecting groove 41 is positioned opposite to the Z-shaped connecting part 5 and covers the remaining part of the Z-shaped connecting part 5 on the upper part 11 of the bottle cap. The connecting groove 41 plays an auxiliary role in separation when the bottle cap is opened, allowing the anti-theft ring 12 to remain on the bottle mouth 3 and the upper part 11 of the bottle cap to be partially separated. At the same time, the design of the connecting groove 41 can also enhance the overall structural coordination of the bottle cap and improve the stability and smoothness of opening.

[0033] like Figure 1 As shown, the first arc-shaped groove 52 and the second arc-shaped groove 53 are connected by a connecting groove 41. The connecting groove 41 surrounds the upper part 11 of the bottle cap, with one end connected to the first arc-shaped groove 52 and the other end connected to the second arc-shaped groove 53, forming an arc-shaped guiding structure. This makes the force on the bottle cap more even during opening, thereby effectively reducing the resistance during opening and improving the smoothness of opening. At the same time, this arc-shaped guiding structure can also guide the distribution of stress during the opening of the bottle cap, avoiding excessive local stress that could lead to breakage or deformation. In addition, the transition between the connecting groove 41 and the first arc-shaped groove 52 and the second arc-shaped groove 53 is smooth, further enhancing the overall integrity and aesthetics of the structure, so that the bottle cap not only achieves its functionality but also has a good visual effect and tactile experience.

[0034] Furthermore, to improve the sealing performance of the bottle cap, a plurality of connecting ribs 42 are evenly distributed on the connecting groove 41. One end of each connecting rib 42 is connected to the upper part 11 of the bottle cap, and the other end is connected to the anti-theft ring 12. The connecting ribs 42 enhance the connection strength between the anti-theft ring 12 and the upper part 11 of the bottle cap. When the bottle cap is not opened, the connecting ribs 42 can make the anti-theft ring 12 and the upper part 11 of the bottle cap tightly connected. When all the connecting ribs 42 are disconnected, the anti-theft ring 12 is separated from the upper part 11 of the bottle cap.

[0035] The distribution density and structural design of the connecting ribs 42 enable them to break gradually during the opening process, avoiding the resistance concentration caused by a one-time break, thereby improving the smoothness of opening and the comfort of the feel.

[0036] In this embodiment, both the bottle cap body 1 and the bottle body 2 are made of the same material, preferably PET. This eliminates the need to separate the bottle cap body 1 and bottle body 2 for separate recycling; they can be recycled together directly, reducing recycling difficulty and improving efficiency. Furthermore, PET material possesses excellent corrosion resistance, pressure resistance, and lightweight properties, giving the bottle cap high practicality and environmental value. This consistent material design not only simplifies the production process but also further enhances the product's sustainable development attributes.

[0037] To further improve efficiency and reduce costs, the bottle cap body 1 is made by one-time in-mold injection molding, which improves production efficiency; the bottle body 2 is made by injection molding during the preform manufacturing process and by blow molding in the final molding stage; at the same time, the synergistic application of in-mold injection molding and blow molding technologies maximizes the utilization rate of materials and reduces waste in the production process.

[0038] In this embodiment, to enhance the flexibility of the U-shaped connecting part 5, making it less prone to breakage and allowing for better bending to create a larger opening angle, the wall thickness of the U-shaped connecting part 5 is less than that of the upper part 11 of the bottle cap and the anti-theft ring 12. This allows the U-shaped connecting part 5 to be more flexible under bending force, creating a larger opening angle. Specifically, the wall thickness of the upper part 11 of the bottle cap and the anti-theft ring 12 is between 0.3mm and 0.5mm, while the wall thickness of the U-shaped connecting part 5 is between 0.15mm and 0.25mm. This differentiated wall thickness design not only ensures the stability of the overall bottle cap structure but also provides good elastic deformation capability during opening, making it easier and smoother for users to unscrew the bottle cap.

[0039] like Figure 1 As shown, the outer surface of the connecting part 51 is smooth, with no transition area between it and the upper part 11 of the bottle cap, making the surface more aesthetically pleasing and eliminating any obvious unevenness, thus enhancing the overall appearance and texture; however, as Figure 2As shown, the connecting part 51 has a thinned transition section inside; this internal thinning design makes the wall thickness of the connecting part 51 smaller, making it easier to bend and deform, and less prone to breakage, thereby improving the flexibility and reliability when opening. Through this differentiated design of the internal and external structures, both the flatness and aesthetics of the bottle cap's appearance are ensured, while also achieving flexibility and a comfortable feel when opening.

[0040] Furthermore, such as Figure 2 As shown, the connecting part 51 includes a first transition part 511 connected to the upper part 11 of the bottle cap and a second transition part 512 connected to the anti-theft ring 12; the wall thickness of the first transition part 511 gradually decreases as it moves away from the upper part 11 of the bottle cap; the wall thickness is smallest at the connection between the first transition part 511 and the second transition part 512; the wall thickness of the second transition part 512 gradually increases as it moves closer to the anti-theft ring 12; thus forming a transition structure from thick to thin and then back to thick.

[0041] This design not only enhances the elastic deformation capacity of the connecting part 51 but also effectively avoids the risk of breakage caused by stress concentration during opening. By precisely controlling the gradient of wall thickness variation in each part, the connecting part 51 can evenly distribute stress when subjected to force, improving the smoothness of opening and the comfort of the feel. In addition, this structure significantly enhances the reusability of the bottle cap; even with repeated opening and closing, it is not prone to fatigue damage, extending the lifespan of the bottle cap. This gradually varying wall thickness connecting part design not only meets functional requirements but also further improves the overall quality of the product and the user experience.

[0042] like Figure 1As shown, the outer wall of the upper part 11 of the bottle cap is provided with a raised interface 111 and a smooth interface 112. The U-shaped connecting part 5 is located on the smooth interface 112 to facilitate bending during subsequent opening. Meanwhile, other parts are raised interfaces 111, and the raised interfaces 111 are provided with a plurality of raised anti-slip protrusions 113, which are vertically spaced along the circumference. The anti-slip protrusions 113 can increase friction when unscrewing the upper part 11 of the bottle cap, prevent fingers from slipping, improve the stability and convenience of operation, and make it easier to unscrew the upper part 11 of the bottle cap. The height and spacing of the anti-slip protrusions 113 are optimized to provide sufficient friction without compromising the overall aesthetics and tactile comfort. Furthermore, the anti-slip protrusions 113 are integrally molded with the bottle cap body, enhancing overall strength and preventing detachment or deformation during use. In actual operation, users can lightly press the anti-slip protrusions 113 with their fingers to quickly generate initial rotational force on the upper part 11 of the bottle cap, further improving opening efficiency and ease of use. Simultaneously, the layout of the raised interfaces 111 and smooth interfaces 112 on the outer wall of the upper part 11 of the bottle cap not only improves the mechanical performance during opening but also enhances the overall aesthetic design of the product. The smooth interfaces 112 are located in the easily bendable parts of the bottle cap, making the opening action smoother and less strenuous, while the raised interfaces 111 are distributed in areas where force can be applied, effectively improving operational stability.

[0043] like Figure 5 and Figure 6 As shown, a first limiting ring 21 and a second limiting ring 22 are spaced apart on the bottle mouth 3. The anti-theft ring 12 is located between the first limiting ring 21 and the second limiting ring 22, which facilitates the subsequent rotation of the anti-theft ring 12 and the bottle cap body 1, making it easy to adjust the direction, while avoiding jamming during opening.

[0044] Furthermore, such as Figure 5 and Figure 6 As shown, the inner wall of the anti-theft ring 12 is provided with a plurality of fixing pieces 121. The fixing pieces 121 are restricted between the first restricting ring 21 and the second restricting ring 22. When the upper part 11 of the bottle cap is unscrewed, the anti-theft ring 12 is locked in the slot between the first restricting ring 21 and the second restricting ring 22 by the fixing pieces 121, thereby achieving a stable connection between the anti-theft ring 12 and the bottle mouth 3. At the same time, the fixing pieces 121 allow the bottle cap body 1 to be mounted on the bottle mouth 3 as a whole, maintaining the connection and being able to rotate relative to it, thereby realizing the opening and closing functions.

[0045] like Figure 5 and Figure 6As shown, the inner wall of the upper part 11 of the bottle cap is provided with an internal thread 71, and the bottle mouth 3 is provided with an external thread 72. The internal thread 71 and the external thread 72 are threadedly connected to screw the upper part 11 of the bottle cap onto the bottle mouth 3. In use, the upper part 11 of the bottle cap is unscrewed by rotating counterclockwise, and the upper part 11 of the bottle cap is screwed onto the bottle mouth 3 by rotating clockwise.

[0046] like Figure 3 and Figure 4 As shown, the anti-theft ring 12 is provided with a lifting groove 81, which is located below the first arc-shaped groove 52 and the second arc-shaped groove 53. A plurality of connecting ribs 42 are evenly distributed on the lifting groove 81. When the upper part 11 of the bottle cap is rotated open, the vertical distance between the lifting grooves 81 increases, causing the connecting ribs 42 to disconnect, thereby achieving separation between the anti-theft ring 12 and the upper part 11 of the bottle cap. When the connecting ribs 42 disconnect, the vertical distance between the lifting grooves 81 can be increased at any time, thus facilitating the rotation and opening of the upper part 11 of the bottle cap.

[0047] like Figure 4 As shown, the upper part 11 of the bottle cap is surrounded by a lifting groove 81 and a connecting groove 41. The lifting groove 81 and the connecting groove 41 are staggered in the vertical direction to maintain a seal. At the same time, when the upper part 11 of the bottle cap is rotated open, the vertical distance between the lifting groove 81 and the connecting groove 41 can be increased, thereby breaking the connecting rib 42 and separating the anti-theft ring 12 from the upper part 11 of the bottle cap, thereby opening the upper part 11 of the bottle cap.

[0048] This design allows users to intuitively feel the feedback when the connecting rib 42 breaks, thus clearly indicating whether the bottle cap has been opened, improving product safety and user experience. Simultaneously, the connection stability between the anti-theft ring 12 and the bottle opening 3 is ensured, guaranteeing the sealing performance of the bottle cap during transportation and use, effectively preventing liquid leakage.

[0049] Furthermore, in this embodiment, as Figure 4 As shown, in order to facilitate the opening of the upper part 11 of the bottle cap, the arc length of the lifting groove 81 is greater than the arc length of the lower part of the zigzag connecting part 5.

[0050] like Figure 4 As shown, in this embodiment, the lower part of the lifting groove 81 is provided with two receiving grooves 91 at intervals, and the upper part of the lifting groove 81 is provided with two corresponding insertion protrusions 92. The insertion protrusions 92 are inserted into the receiving grooves 91. By inserting them in an up-and-down manner, the rotation of the upper part is transmitted to the anti-theft ring 12 part of the lower part, so that the rotational force can be effectively applied to the connecting rib 42, causing it to break.

[0051] like Figure 4As shown, the design of the insertion protrusion 92 and the receiving groove 91 not only enhances the stability of rotational transmission but also improves the ease of operation during opening, further optimizing the functionality and practicality of the overall structure. Through this structural design, the rotational force distribution during bottle cap opening is more uniform, effectively reducing the force required for the connecting rib 42 to break, and improving the smoothness and reliability of opening. Simultaneously, the cooperation between the insertion protrusion 92 and the receiving groove 91 enhances the connection precision between components, preventing slippage during opening and further ensuring the integrity of the separation between the anti-theft ring 12 and the bottle mouth 3. This design not only optimizes the user experience but also improves the overall structural strength and functionality of the bottle cap, possessing strong practical value and wide applicability.

[0052] Furthermore, when open, the insertion protrusion 92 can also press against the bottle opening 3, thus providing support and creating a stable opening angle between the upper part 11 of the cap and the bottle opening 3, facilitating liquid pouring or contents removal. In addition, the supporting effect of the insertion protrusion 92 reduces the shaking between the cap and the bottle opening during opening, improving stability and safety. This detailed design also increases the lateral length of the connecting part 51 when open, and further increases the distance between the upper part 11 of the cap and the anti-theft ring 12 when the cap is opened, facilitating a greater opening angle for the upper part of the cap.

[0053] Furthermore, in this embodiment, the groove gaps between the first arc-shaped groove 52, the second arc-shaped groove 53, the connecting groove 41, and the rising groove 81 are between 0.10 mm and 0.20 mm, preferably 0.15 mm. This gap design ensures flexible fit between the components while effectively avoiding structural loosening or reduced sealing performance due to excessive gaps.

[0054] The working principle of this utility model:

[0055] Unscrew the upper part 11 of the bottle cap counterclockwise. The upper part 11 of the bottle cap rises vertically along the internal threads, increasing the vertical distance between the connecting groove 41 and the lifting groove 81. The insertion protrusion 92 causes the anti-theft ring 12 at the bottom of the receiving groove 91 to rotate, causing the connecting rib 42 between the connecting groove 41 and the lifting groove 81 to break. The vertical distance between the connecting groove 41 and the lifting groove 81 increases, and the upper part 11 of the bottle cap opens from the bottle mouth 3. With the assistance of the first arc-shaped groove 52 and the second arc-shaped groove 53, the connecting part 51 is partially detached from the upper part 11 of the bottle cap, thereby extending or bending, so that the upper part 11 of the bottle cap is further away from the anti-theft ring 12; or the connecting part 51 is bent to increase the opening angle of the upper part 11 of the bottle cap.

[0056] Furthermore, due to the presence of the connecting part 51, the upper part 11 of the bottle cap and the anti-theft ring 12 are firmly connected together and are not easily separated, which facilitates recycling.

[0057] Furthermore, by moving the upper part 11 of the bottle cap to the upper part of the bottle mouth 3 and turning the upper part 11 of the bottle cap clockwise, the upper part 11 of the bottle cap can be sealed to the bottle mouth 3.

[0058] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. A spiral-type integral bottle cap, characterized in that: The device includes a bottle cap body (1), which is installed on the bottle mouth (3) of the bottle body (2). The bottle cap body (1) includes an upper part (11) of the bottle cap installed on the upper part and an anti-theft ring (12) installed on the lower part of the upper part (11). The upper part (11) of the bottle cap and the anti-theft ring (12) are connected by a U-shaped connecting part (5). The U-shaped connecting part (5) includes a connecting part (51), one end of which is connected to the upper part (11) of the bottle cap and the other end is connected to the anti-theft ring (12). The U-shaped connecting part (5) also includes a first arc-shaped groove (52) provided on one side of the connecting part (51) and a second arc-shaped groove (53) provided on the other side of the connecting part (51). The first arc-shaped groove (52) and the second arc-shaped groove (53) are connected by a connecting groove (41). The connecting groove (41) surrounds the upper part (11) of the bottle cap, with one end connected to the first arc-shaped groove (52) and the other end connected to the second arc-shaped groove (53). A plurality of connecting ribs (42) are evenly distributed on the connecting groove (41). One end of the connecting rib (42) is connected to the upper part (11) of the bottle cap, and the other end is connected to the anti-theft ring (12). The anti-theft ring (12) is provided with a lifting groove (81). The lifting groove (81) is located below the first arc-shaped groove (52) and the second arc-shaped groove (53). A plurality of connecting ribs (42) are evenly distributed on the lifting groove (81). The arc length of the lifting groove (81) is greater than the arc length of the lower part of the Z-shaped connecting part (5). Both the bottle cap body (1) and the bottle body (2) are made of PET material. The connecting part (51) includes a first transition part (511) connected to the upper part (11) of the bottle cap and a second transition part (512) connected to the anti-theft ring (12); the wall thickness of the first transition part (511) gradually decreases as it moves away from the upper part (11) of the bottle cap; the wall thickness of the second transition part (512) gradually increases as it moves closer to the anti-theft ring (12); the wall thickness is smallest at the connection between the first transition part (511) and the second transition part (512); thus forming a transition structure from thick to thin and then back to thick.

2. The spiral-type integral bottle cap according to claim 1, characterized in that: The groove gap between the first arc-shaped groove (52), the second arc-shaped groove (53) and the connecting groove (41) is between 0.10 mm and 0.20 mm.

3. The spiral-type integral bottle cap according to claim 1, characterized in that: The bottle cap body (1) is formed by one-time in-mold injection molding.

4. A spiral-type integral bottle cap according to claim 3, characterized in that: The wall thickness of the upper part (11) of the bottle cap and the anti-theft ring (12) is between 0.3 mm and 0.5 mm, and the wall thickness of the zigzag connecting part (5) is between 0.15 mm and 0.25 mm.

5. A spiral-type integral bottle cap according to claim 1, characterized in that: The upper part (11) of the bottle cap is provided with a raised interface (111) and a smooth interface (112) on the outer side wall. The smooth interface (112) is provided with a zig-shaped connecting part (5). The raised interface (111) is provided with a number of raised anti-slip protrusions (113). The anti-slip protrusions (113) are arranged vertically at intervals along the circumference.

6. A spiral-type integral bottle cap according to claim 1, characterized in that: The bottle opening (3) is provided with a first limiting ring (21) and a second limiting ring (22) spaced apart. The anti-theft ring (12) is provided between the first limiting ring (21) and the second limiting ring (22). The inner side wall of the anti-theft ring (12) is provided with a plurality of fixing pieces (121), and the fixing pieces (121) are restricted between the first limiting ring (21) and the second limiting ring (22).

7. A spiral-type integral bottle cap according to claim 1, characterized in that: The inner wall of the upper part (11) of the bottle cap is provided with an internal thread (71), and the bottle mouth (3) is provided with an external thread (72). The internal thread (71) and the external thread (72) are threadedly connected, and the upper part (11) of the bottle cap is screwed onto the bottle mouth (3).

8. A spiral-type integral bottle cap according to claim 1, characterized in that: The lower part of the lifting groove (81) is provided with several receiving grooves (91), and the upper part of the lifting groove (81) is provided with several insertion protrusions (92). The insertion protrusions (92) are inserted into the receiving grooves (91), and the groove gap of the lifting groove (81) is between 0.10mm and 0.20mm.

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