A flexible, sealed, one-piece bottle cap

Abstract

This utility model discloses an elastic sealing 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. When the upper part of the bottle cap is opened from the bottle mouth, the upper part of the bottle cap and the anti-theft ring are connected by a U-shaped connecting part. The upper part of the bottle cap includes an upper cover and an annular side cover on the side of the upper cover. An annular inner cover is provided inside the annular side cover. The upper cover, the annular side cover, and the annular inner cover form a U-shaped receiving groove for receiving the upper part of the bottle mouth. The annular inner cover has a raised sealing ring on the outside. When the upper part of the bottle mouth is inserted into the U-shaped receiving groove, the raised sealing ring is squeezed, causing the raised sealing ring to deform and seal the bottle mouth. This utility model has good sealing performance and effectively prevents liquid leakage and external air from entering the bottle.

Description

Technical Field

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

[0002] Bottle caps are typically attached to the bottle body to seal the opening, prevent leakage of the contents, and ensure the quality and safety of the contents. At the same time, bottle caps can also serve as a packaging element, adding to the product's aesthetics and unique appeal.

[0003] The existing bottle caps are screwed onto the bottle opening, with the external thread on the bottle opening matching the internal thread on the cap. However, since users need to completely unscrew the bottle cap from the bottle opening when drinking beverages, the bottle cap is completely separated from the bottle opening, which easily leads to the bottle cap being lost. This not only causes inconvenience to users, but also makes it difficult to recycle the lost bottle caps, which will cause environmental pollution.

[0004] Furthermore, once the bottle cap is opened, outside air enters the bottle, causing the beverage inside to oxidize upon contact with the air, leading to a decline in beverage quality and even affecting drinking safety. In addition, existing bottle caps are prone to deterioration in their sealing performance after repeated opening and closing, failing to effectively maintain the sealed state of the contents and further increasing the risk of liquid leakage and contamination. Utility Model Content

[0005] The purpose of this invention is to overcome the defects of existing technologies, such as easy separation of bottle caps from bottle bodies, poor sealing performance, and poor repeated sealing effect, and to provide an elastic sealing integrated bottle cap. The bottle cap can always be connected to the bottle body to prevent the bottle cap from being lost. At the same time, the elastic sealing structure achieves good sealing performance and effectively prevents liquid leakage and external air from entering the bottle body.

[0006] To achieve the above objectives, this utility model provides an elastic sealing 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. When the upper part of the bottle cap is opened from the bottle mouth, the upper part of the bottle cap and the anti-theft ring are connected by a U-shaped connecting part. The upper part of the bottle cap includes an upper cover and an annular side cover on the side of the upper cover. An annular inner cover is provided inside the annular side cover. The upper cover, the annular side cover, and the annular inner cover form a U-shaped receiving groove for receiving the upper part of the bottle mouth. The annular inner cover has a raised sealing ring on its outside. When the upper part of the bottle mouth is inserted into the U-shaped receiving groove, the raised sealing ring is squeezed, causing the raised sealing ring to deform and seal the bottle mouth.

[0007] Preferably, the inner side of the annular side cover is provided with a positioning ring, which contacts the bottle mouth and seals the outer side of the bottle mouth; the outer side of the annular inner side cover is also provided with an inward groove, and the raised sealing ring is connected to the groove. When the bottle mouth is squeezed by the raised sealing ring, the raised sealing ring deflects inward around the groove and deforms, sealing the inner side of the bottle mouth.

[0008] Preferably, the lower end of the positioning ring is provided with a rounded chamfer, and the lower end of the inner annular cover is provided with an inclined chamfer. The rounded chamfer and the inclined chamfer guide the bottle mouth into the U-shaped receiving groove.

[0009] Preferably, both the bottle cap body and the bottle body are made of PET material, the protrusion height of the raised sealing ring is between 0.1mm and 0.2mm, and the bottle cap body is formed by one-time in-mold injection molding.

[0010] 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.

[0011] 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.

[0012] Preferably, the U-shaped connecting part includes a connecting part, one end of which is connected to the upper part of the bottle cap and the other end is connected to an anti-theft ring; the U-shaped connecting part also includes a first arc-shaped groove provided on one side of the connecting part and a second arc-shaped groove provided on the other side of the connecting part.

[0013] 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. Several 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.

[0014] 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.

[0015] 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 gaps between the first arc-shaped groove, the second arc-shaped groove, the connecting groove and the lifting groove are between 0.10 mm and 0.20 mm.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] The present invention features a U-shaped connecting part between the upper part of the bottle cap and the anti-theft ring. When the upper part of the bottle cap is opened from the bottle opening, the upper part of the bottle cap and the anti-theft ring are connected through the U-shaped connecting part, maintaining the stability of the connection between the upper part of the bottle cap and the anti-theft ring. Furthermore, the anti-theft ring is fitted over the outside of the bottle opening, ensuring that the upper part of the bottle cap remains connected to the bottle body and preventing the upper part of the bottle cap from being lost. Even further, during the process of closing the upper part of the bottle cap with the bottle opening, the inner wall of the upper part of the bottle opening compresses the raised sealing ring, causing the raised sealing ring to undergo compressive elastic deformation, thus sealing the bottle opening. Through the elastic deformation of the raised sealing ring, the sealing performance inside the bottle is effectively improved, effectively preventing liquid leakage and the entry of external air into the bottle body, thereby preventing the liquid inside the bottle from deteriorating. Attached Figure Description

[0018] 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.

[0019] Figure 1 This is a schematic diagram of the bottle cap body in the open state provided by this utility model;

[0020] Figure 2 This is a cross-sectional view of the upper part of the bottle cap provided by this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the bottle cap body and the bottle body assembled together according to this utility model;

[0022] Figure 4 This is a cross-sectional schematic diagram of the bottle cap body and bottle body installed together in the open state according to this utility model.

[0023] Figure 5 This is a schematic diagram of the internal structure of the bottle cap body provided by this utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the first side of the bottle cap body provided by this utility model;

[0025] Figure 7 yes Figure 6 Enlarged view of point A in the middle;

[0026] Figure 8 This is a schematic diagram of the structure of the second side of the bottle cap body provided by this utility model;

[0027] Figure 9 This is a structural schematic diagram of the third side of the bottle cap body provided by this utility model.

[0028] The diagram includes:

[0029] 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; 111. Top cover; 112. Annular side cover; 113. Annular inner side cover; 114. U-shaped receiving groove; 115. Raised sealing ring; 1121. Positioning ring; 1131. Inner groove; 1122. Rounded chamfer; 1132. Inclined chamfer; 21. First limiting ring; 22. Second limiting ring; 121. Fixing piece; 71. Internal thread; 72. External thread; 51. Connecting part; 52. First arc-shaped groove; 53. Second arc-shaped groove; 41. Connecting groove; 42. Connecting rib; 81. Lifting groove; 91. Receiving groove; 92. Insertion protrusion. Detailed Implementation

[0030] 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.

[0031] Please refer to Figures 1 to 9 This utility model provides an elastic sealing integrated bottle cap.

[0032] like Figure 3 and Figure 4 As shown, the elastic sealing integrated bottle cap includes a bottle cap body 1, which is installed on the bottle mouth 3 of the bottle body 2. The bottle cap body 1 is screwed to the bottle mouth 3 via a spiral structure. Furthermore, the bottle cap body 1 can be installed on a beverage bottle for easy carrying and use by the user.

[0033] Furthermore, such as Figure 4As shown, the bottle cap body 1 includes an upper bottle cap part 11 mounted on the upper part and an anti-theft ring 12 mounted on the lower part of the upper bottle cap part 11. The upper bottle cap part 11 is fitted onto the outside of the bottle mouth 3 and screwed into it. The anti-theft ring 12 is mounted on the lower part of the bottle mouth 3 to prevent the bottle cap body 1 from being disassembled at will. Furthermore, when the upper bottle cap part 11 is opened from the bottle mouth 3, the upper bottle cap part 11 and the anti-theft ring 12 are connected by a U-shaped connecting part 5. This prevents the bottle cap body 1 from separating from the anti-theft ring 12 when the bottle mouth 3 is opened, thereby ensuring that the bottle cap body 1 will not be lost and improving the overall convenience of use and recycling.

[0034] like Figure 1 and Figure 2 As shown, the upper part 11 of the bottle cap includes an upper cover 111 and an annular side cover 112 arranged around the side of the upper cover 111. An annular inner cover 113 is provided on the inner side of the annular side cover 112. The upper cover 111, the annular side cover 112 and the annular inner cover 113 form a U-shaped receiving groove 114. The U-shaped receiving groove 114 is used to receive the upper part of the bottle mouth 3 and seal the bottle mouth 3.

[0035] Furthermore, in this embodiment, as Figure 2 As shown, the annular inner cover 113 has a raised sealing ring 115 on the outside. When the upper part of the bottle mouth 3 is inserted into the U-shaped receiving groove 114, the raised sealing ring 115 is squeezed, causing the raised sealing ring 115 to deform and seal the bottle mouth 3.

[0036] Furthermore, the inner side of the annular side cover 112 is provided with a positioning ring 1121, which contacts the bottle mouth 3 and seals the outer side of the bottle mouth 3; the outer side of the annular inner side cover 113 is also provided with an inward groove 1131, and the raised sealing ring 115 is connected to the groove 1131. When the bottle mouth 3 is squeezed by the raised sealing ring 115, the raised sealing ring 115 deflects inward around the groove 1131 and deforms, sealing the inner side of the bottle mouth 3.

[0037] To facilitate the insertion of the bottle neck 3, the lower end of the positioning ring 1121 is provided with an arc chamfer 1122, and the lower end of the annular inner cover 113 is provided with an inclined chamfer 1132. The arc chamfer 1122 and the inclined chamfer 1132 guide the bottle neck 3 into the U-shaped receiving groove 114.

[0038] 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.

[0039] 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.

[0040] Furthermore, the raised sealing ring 115 is also made of PET material, which allows it to undergo appropriate elastic deformation when compressed, thereby tightly fitting the outer wall of the bottle opening 3 and achieving a reliable sealing effect. At the same time, since the raised sealing ring 115 and the annular inner cap 113 adopt an integrated structural design, the overall structure of the bottle cap is further simplified, the number of parts is reduced, which not only improves assembly efficiency but also enhances the stability and sealing performance of the product.

[0041] Furthermore, the protrusion height of the raised sealing ring 115 is between 0.1mm and 0.2mm, preferably 0.15mm; this height range ensures sealing performance without causing difficulty in inserting the bottle due to excessive compression. In practical applications, by precisely controlling the height of the raised sealing ring 115, it is possible to ensure reliable sealing while also taking into account ease of assembly and smoothness of use.

[0042] like Figure 4 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.

[0043] Furthermore, such as Figure 4 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.

[0044] like Figure 6 As 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.

[0045] like Figure 8 As 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.

[0046] 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.

[0047] 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.

[0048] like Figure 8As 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.

[0049] 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.

[0050] The distribution density and structural design of the connecting ribs 42 enable them to break gradually during the opening process, avoiding resistance concentration caused by a one-time break, thereby improving the smoothness of opening and the comfort of the feel.

[0051] like Figure 8 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.

[0052] like Figure 8 and Figure 9 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.

[0053] 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.

[0054] Furthermore, in this embodiment, as Figure 8 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.

[0055] like Figure 9 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.

[0056] like Figure 9 As 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 when opening, further optimizing the functionality and practicality of the overall structure.

[0057] The aforementioned structural design ensures a more uniform distribution of rotational force during bottle cap opening, effectively reducing the force required to break the connecting rib 42 and improving the smoothness and reliability of opening. Simultaneously, the engagement 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 tamper-evident ring 12 and the bottle opening 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.

[0058] 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 bottle cap and the bottle opening 3, facilitating liquid pouring or contents removal. In addition, the supporting function of the insertion protrusion 92 reduces the shaking between the bottle cap and the bottle opening during opening, improving stability and safety during use.

[0059] This detailed design also increases the lateral length of the connecting part 51 when it is opened, and also increases the distance between the upper part of the bottle cap 11 and the anti-theft ring 12 when the upper part of the bottle cap 11 is opened; making it easier to increase the opening angle of the upper part of the bottle cap.

[0060] 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.

[0061] The sealing principle of this invention is as follows:

[0062] When the bottle cap body 1 is fitted onto the bottle mouth 3, the upper part of the bottle mouth 3 is inserted into the U-shaped receiving groove 114 formed by the upper cover 111, the annular side cover 112 and the annular inner side cover 113; the bottle mouth 3 is guided by the rounded chamfer 1122 and the inclined chamfer 1132, so that the bottle mouth 3 enters the U-shaped receiving groove 114.

[0063] During insertion, the outer side of the bottle opening 3 contacts the positioning ring 1121 and seals the outer side of the bottle opening 3; the inner side of the bottle opening 3 contacts the annular inner cover 113 and squeezes the raised sealing ring 115, causing the raised sealing ring 115 to deflect inward around the inner groove 1131, thereby causing rotational deformation and compression deformation, thus sealing the inner side of the bottle opening 3.

[0064] The opening principle of this utility model is as follows:

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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 resiliently sealed, hinged bottle cap, characterized by: The system includes a bottle cap body (1), which is mounted on the bottle mouth (3) of a bottle body (2). The bottle cap body (1) includes an upper part (11) of the bottle cap mounted on the upper part and an anti-theft ring (12) mounted on the lower part of the upper part (11). When the upper part (11) of the bottle cap is opened from the bottle mouth (3), the upper part (11) of the bottle cap and the anti-theft ring (12) are connected by a U-shaped connecting part (5). The upper part (11) of the bottle cap includes an upper cover (111) and an annular side cover (112) on the side of the upper cover (111). An annular inner cover (113) is provided on the inner side of the annular side cover (112). The upper cover (111), the annular side cover (112) and the annular inner cover (113) form a U-shaped receiving groove (114). The U-shaped receiving groove (114) is used to receive the upper part of the bottle mouth (3). The annular inner cover (113) is provided with a raised sealing ring (115) on the outside. When the upper part of the bottle mouth (3) is inserted into the U-shaped receiving groove (114), the raised sealing ring (115) is squeezed, causing the raised sealing ring (115) to deform and seal the bottle mouth (3). Both the bottle cap body (1) and the bottle body (2) are made of PET material. 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), which is located below the first arc-shaped groove (52) and the second arc-shaped groove (53). A number 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). The lower part of the lifting groove (81) is provided with a plurality of receiving grooves (91), and the upper part of the lifting groove (81) is provided with a plurality of insertion protrusions (92), which are inserted into the receiving grooves (91); The inner side of the annular side cover (112) is provided with a positioning ring (1121), which contacts the bottle mouth (3) and seals the outer side of the bottle mouth (3); the outer side of the annular inner side cover (113) is also provided with an inward groove (1131), and the raised sealing ring (115) is connected to the groove (1131). When the bottle mouth (3) squeezes the raised sealing ring (115), the raised sealing ring (115) deflects inward around the groove (1131) and deforms, sealing the inner side of the bottle mouth (3).

2. A flexible sealing and hinging cap according to claim 1, characterized in that: The lower end of the positioning ring (1121) is provided with a rounded chamfer (1122), and the lower end of the annular inner cover (113) is provided with an inclined chamfer (1132). The rounded chamfer (1122) and the inclined chamfer (1132) guide the bottle mouth (3) into the U-shaped receiving groove (114).

3. A resiliently sealed, integral bottle cap according to claim 1, wherein: The protrusion height of the raised sealing ring (115) is between 0.1 mm and 0.2 mm, and the bottle cap body (1) is formed by one-time in-mold injection molding.

4. A flexible sealing and hinging 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).

5. A flexible sealing and hinging 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).

6. A flexible sealing and hinging cap according to claim 1, characterized in that: The groove gaps between the first arc-shaped groove (52), the second arc-shaped groove (53), the connecting groove (41), and the lifting groove (81) are between 0.10 mm and 0.20 mm.

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