Cap hanging structure of pull-open type bottle cap and bottle

Abstract

The utility model discloses a pull-open type bottle cap hanging cap structure and a bottle, the pull-open type bottle cap comprises an integrally formed cap body, the cap body is provided with a long tearing line and a short tearing line, two ends of the long tearing line are provided with inner side notches, two ends of the short tearing line are provided with outer side notches, and parts between the inner side notches and the outer side notches form a connecting band. By setting the lengths and the positions of the inner side notch and the outer side notch, when the turning cover is turned over by 180 degrees, a contact part exists between the bottle cap seat and the turning cover, the contact part is elastically deformed due to the pulling force of the connecting belt, or the connecting belt is stretched to generate elastic deformation, and after the turning cover is turned over by more than 180 degrees, the contact part or the connecting belt rebounds, so that the turning cover is turned over by more than 180 degrees. The turning cover is in a stress keeping state, the structure of the bottle cap is simplified, and the difficulty of a mold and production is further reduced.

Description

Technical Field

[0001] This utility model relates to a packaging container, and more particularly to a cap for a packaging bottle. Background Technology

[0002] The same applicant earlier filed a flip-top beverage bottle cap application, application number 202321018918X, application date April 27, 2023. It has an outwardly protruding wrench part integrally formed on the lower outer wall of the plate, and an outwardly protruding anti-reverse piece is provided on the top of the bottle cap. In the subsequent actual production and use process, the utility model applicant found that the bottle cap has shortcomings. First, the wrench part and the anti-reverse piece protrude outward, which puts high requirements on the mold and production. Second, during the packaging and transportation process, the wrench part is easy to be hit, causing the plate to crack locally.

[0003] Subsequently, on May 25, 2023, the applicant filed a patent application with application number 2023212962416 entitled "A Pry-Open Beverage Bottle Cap". The cap's flap extends downwards, and there is no outward-extending lever or flap on the cap. This solves the problem that the flap is easily touched during packaging and transportation, causing local cracking of the cap. However, it still has the problem of high production difficulty. This application is a further improvement on this problem.

[0004] In addition, in the patent application with application number 2023212962416, a circumferential folding groove is provided on the plate, and the part below the folding groove is the handle. When opening, the handle folds outward along the folding groove, and then the handle is lifted upward to break the tear line and open the bottle cap. In the subsequent actual test, the applicant found that because the handle is small, only two fingers can pinch it, and it takes a lot of force to break the tear line, making it inconvenient to open the bottle cap. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology, this utility model provides a simple structure, reduces the difficulty of mold making and production, and is easy to open a pull-open bottle cap hook structure and bottle.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A hinged cap structure for a flip-top bottle cap includes an integrally formed cap body. The cap body has a long tear line and a short tear line along the circumference. The long tear line has inner slits along the axial direction of the cap body at both ends, and the short tear line has outer slits along the axial direction of the cap body at both ends. After the long and short tear lines break, the upper portion of the long and short tear lines forms a flip cap, and the lower portion forms a cap seat. The area between the inner and outer slits forms a connecting strip. When the flip cap is flipped 180 degrees, there is a contact point between the cap seat and the flip cap. The tension of the connecting strip causes elastic deformation at the contact point, or the connecting strip is stretched and undergoes elastic deformation. After the flip cap is flipped more than 180 degrees, the contact point or the connecting strip springs back, keeping the flip cap in a force-holding state.

[0008] As a further improvement of this utility model, the middle part of the long tear line has a downward bending part, so that the lower edge of the flap forms a downward protruding plate.

[0009] As a further improvement of this utility model, a folding groove is provided between the upper end of the plate and the flip cover; the cross-section of the folding groove is V-shaped.

[0010] As a further improvement of this utility model, a sealing plug is provided on the inner side of the top of the flip cover, the sealing plug is provided with an inclined avoidance slope at the part corresponding to the plate, the sealing plug is provided with a downward protruding guide part at the part away from the plate, and a sealing ring is provided on the outer surface of the sealing plug.

[0011] As a further improvement of this utility model, the diameter of the flip cover is smaller than the diameter of the bottle cap seat, the long tear line is formed by the thin-walled portion between the bottle cap seat and the flip cover, and the short tear line is also formed by the thin-walled portion between the bottle cap seat and the flip cover.

[0012] The short tear line is located on the top surface of the cover.

[0013] The upper end of the connecting strip extends to the top surface of the flap.

[0014] The long tear line near the connecting strip has an arc-shaped structure extending from bottom to top and is connected to the inner cut. The inner cut is adapted to the arc shape of the long tear line and is a continuation of the long tear line.

[0015] The connecting strip has a sloping structure that slopes towards the center from bottom to top.

[0016] A thickened rib is provided inside the connecting strip between the inner and outer cuts.

[0017] The thickness of the thickened rib gradually decreases from the inner cut to the outer cut.

[0018] The first type of bottle using the above-mentioned flip-top bottle cap includes a bottle body, the bottle mouth of the bottle body is provided with an external thread, and a support block is provided at the upper inner side of the plate. The support block is located entirely or partially below the folded groove. After being assembled to the bottle mouth, the lower surface of the support block abuts against the upper surface of the external thread.

[0019] The second type of bottle using the above-mentioned flip-top bottle cap includes a bottle body. The bottle mouth of the bottle body is provided with an external thread, and the lower part of the external thread is provided with an upper convex ring and a lower convex ring, forming a limiting groove between the upper convex ring and the lower convex ring. A limiting block is provided on the lower inner wall of the cap body. After assembly, the limiting block is located between the upper convex ring and the lower convex ring. When the bottle cap is rotated in the forward direction, when the lower convex ring blocks the limiting block, the sealing plug is fully inserted into the bottle mouth to form a seal. When the bottle cap is rotated in the reverse direction, when the upper convex ring blocks the limiting block, the sealing plug partially disengages from the bottle mouth, forming a pressure relief gap between the sealing plug and the bottle mouth.

[0020] The third type of bottle using the aforementioned flip-top cap includes a bottle body. The bottle mouth of the bottle body is provided with an external thread, and the lower part of the external thread is provided with an upper convex ring and a lower convex ring, forming a limiting groove between the upper convex ring and the lower convex ring. A limiting block is provided on the lower inner wall of the cap body, and the sealing ring has an upward pressure relief bend on the side away from the guide portion. After assembly, the limiting block is located between the upper convex ring and the lower convex ring. When the bottle cap is rotated in the forward direction, when the lower convex ring blocks the limiting block, the sealing ring is fully inserted into the bottle mouth to form a seal. When the bottle cap is rotated in the reverse direction, when the upper convex ring blocks the limiting block, the pressure relief bend is completely or partially disengaged from the bottle mouth, forming a pressure relief gap between the pressure relief bend and the bottle mouth.

[0021] A hinged cap structure for a flip-top bottle cap includes a cap holder and a flip cap. A connecting strap is provided between the cap holder and the flip cap. When the flip cap is flipped 180 degrees, there is a contact point between the cap holder and the flip cap. The tension of the connecting strap causes the contact point to undergo elastic deformation, or the connecting strap is stretched to undergo elastic deformation. After the flip cap is flipped more than 180 degrees, the contact point or the connecting strap springs back, so that the flip cap is in a force-holding state.

[0022] A hinged cap structure includes a cap seat and a flip cap. A symmetrical connecting band is provided between the cap seat and the flip cap. An upwardly protruding vertical piece is provided on the cap seat between the connecting bands. A spring piece is provided on the vertical piece. When the cap seat is screwed onto the bottle, the spring piece fits tightly against the bottle opening.

[0023] The flip cover has a paddle part corresponding to the spring part. During the flip cover flipping, the paddle parts paddle against each other to produce a sound.

[0024] When the flip cover is closed, the lever portion is located above the spring portion, and the edge of the lever portion is flush with the outer wall of the spring portion, or the edge of the lever portion extends beyond the outer wall of the spring portion.

[0025] The beneficial effects of this utility model are as follows: By setting the length and position of the inner and outer cuts, this utility model ensures that when the cap is flipped 180 degrees, there is a contact point between the cap holder and the cap. The tension of the connecting strip causes the contact point to undergo elastic deformation, or the connecting strip is stretched to undergo elastic deformation. After the cap is flipped more than 180 degrees, the contact point or the connecting strip rebounds, keeping the cap in a force-holding state. This simplifies the structure of the cap and further reduces the difficulty of mold making and production.

[0026] In addition, the upper end of the plate of this utility model is provided with a folding groove between it and the flip cover. A support block is provided on the upper inner side of the plate. After being assembled to the bottle mouth, the lower surface of the support block abuts against the upper surface of the thread on the bottle mouth. When opening, the plate bends along the folding groove, and the support block rotates on the upper surface of the thread. Based on the lever principle, an upward force is applied to the flip cover, causing the long tear line to break partially. Then, only a small force is needed to break the entire long tear line, making it easy to open. Attached Figure Description

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] Figure 1 This is one of the structural schematic diagrams of the first embodiment of this utility model;

[0029] Figure 2 This is the second schematic diagram of the first embodiment of this utility model;

[0030] Figure 3 yes Figure 1 The diagram shows the structure of the bottle cap when it is opened 180 degrees.

[0031] Figure 4 yes Figure 1 The diagram shows the structure of the bottle cap after it has been opened more than 180 degrees.

[0032] Figure 5 yes Figure 1 The shown is a cross-sectional view after the bottle cap is assembled to the bottle neck.

[0033] Figure 6 This is a structural diagram of the second embodiment of this utility model;

[0034] Figure 7yes Figure 6 A cross-sectional view of the bottle cap shown;

[0035] Figure 8 This is a structural diagram of the third embodiment of this utility model;

[0036] Figure 9 yes Figure 8 The diagram shows a cross-sectional view of the sealed state after the bottle cap is assembled to the bottle opening.

[0037] Figure 10 yes Figure 8 The diagram shows a cross-sectional view of the bottle cap after it has been assembled onto the bottle neck, in a depressurized state.

[0038] Figure 11 This is a structural diagram of the bottle;

[0039] Figure 12 This is a sectional view of the cover.

[0040] Figure 13 This is one of the structural diagrams of the cover;

[0041] Figure 14 This is the second structural diagram of the cover. Detailed Implementation

[0042] Reference Figures 1 to 14 A hinged cap structure for a flip-top bottle cap includes a cap body 1, which is integrally injection molded from a plastic material with a certain elasticity. The cap body 1 has a long tear line 2 and a short tear line 3 along the circumferential direction. The long tear line 2 has inner cutouts 4 along the axial direction of the cap body 1 at both ends, and the short tear line 3 has outer cutouts 5 along the axial direction of the cap body 1 at both ends. In this application, "along the circumferential direction" refers to along the circumferential surface, which can be an arc line located in the same plane or an irregular line with upper and lower bends that are not in the same plane. The axial direction is relative to the circumferential direction and can be a direction parallel to the axis of the cap or an inclined direction with a certain angle. The long and short tear lines can be indentations or dotted line-like cuts, etc.

[0043] After the long tear line 2 and the short tear line 3 break, the upper part of the long tear line 2 and the short tear line 3 forms the flip cover 6, and the lower part forms the bottle cap seat 7. The part between the inner cut 4 and the outer cut 5 forms the connecting band 8. When the flip cover 6 is flipped 180 degrees, there is a contact part between the bottle cap seat 7 and the flip cover 6. The tension of the connecting band 8 causes the contact part to undergo elastic deformation, or the connecting band 8 is stretched to undergo elastic deformation. After the flip cover 6 is flipped more than 180 degrees, the contact part or the connecting band 8 rebounds, so that the flip cover 6 is in a force-holding state, avoiding the flip cover 6 from touching the mouth and nose when drinking. This utility model simplifies the structure of the bottle cap by setting the length and position of the inner and outer cuts so that the flip cover is in a force-holding state after being flipped more than 180 degrees, and further reduces the difficulty of making molds and production.

[0044] The bottle cap is round. The length and position of the inner cut 4 and outer cut 5 are designed appropriately. Generally, the distance between the inner cut 4 and outer cut 5 should be greater than 1 mm. The lengths of the inner cut 4 and outer cut 5 can be the same or slightly different. Their shapes can be straight segments along the axis, oblique lines with a certain angle to the axis, or curves of any shape. When the flip cap 6 is flipped 180 degrees, the part other than the inner cut 4 is arc-shaped. The length of the cut is less than the sum of the arc height of the flip cap 6 and the bottle cap seat 7 by 0.1 to 5 mm, thus creating a contact point between the bottle cap seat 7 and the flip cap 6. The first solution involves using thinner and softer materials for the bottle cap holder 7 and the flip cover 6. At the contact point, the bottle cap holder 7 and / or the flip cover 6 undergo elastic deformation. That is, the tension of the connecting strap 8 causes elastic deformation at the contact point (the slight stretching of the connecting strap 8 can be ignored). When the flip cover 6 is flipped 180 degrees, the contact point and the connecting strap 8 are basically on the same plane. After flipping 180 degrees, the contact point moves above the connecting strap 8. After releasing the grip, the contact point rebounds, which keeps the flip cover 6 in a state of being held in place by force.

[0045] In the second scenario, if the bottle cap holder 7 and the flip cover 6 are thicker and harder, making them less prone to deformation, then the connecting strap 8 can be thinner and more elastic. When the flip cover 6 is flipped 180 degrees, the connecting strap 8 is stretched and undergoes elastic deformation (the slight deformation of the bottle cap holder 7 and the flip cover 6 can be ignored). After the flip cover 6 is flipped more than 180 degrees, the connecting strap 8 springs back, keeping the flip cover 6 in a state of being held in place by force.

[0046] The long tear line 2 has a downward-bent section 9 in the middle, so that the lower edge of the flip cover 5 forms a downward-protruding plate 10. The bend of the cover is suitable to be a through cut to facilitate opening of the plate 10. The part of the long tear line 2 below and on both sides of the plate 10 is suitable to be a through cut. The part below the plate 10 should have a certain width and a bevel to facilitate opening.

[0047] A folding groove 11 is provided between the upper end of the plate 10 and the flip cover 5. Prying outward from the lower end of the plate 10, the plate 10 bends along the folding groove 11, making it easy to open. The cross-section of the folding groove 11 is V-shaped. The angle of the two sides of the folding groove 11 can limit the bending angle of the plate 10 along the folding groove 11. The inclination angle of the two sides can be 10-65 degrees. When opening, the plate 10 bends along the folding groove 11 at 20-130 degrees.

[0048] A sealing plug 13 is provided on the inner side of the top of the flip cap 6. After being assembled to the bottle mouth, the sealing plug 13 is inserted into the bottle mouth to enhance the sealing effect. The sealing plug 13 has an inwardly inclined avoidance slope 14 at the lower end corresponding to the part of the plate 10. The avoidance slope 14 facilitates the insertion and removal of the sealing plug 13 from the bottle mouth. A sealing ring 21 is provided on the outer surface of the sealing plug 13. In addition, in order to facilitate the insertion and removal of the sealing plug from the bottle mouth, the height of the sealing plug cannot be very large. Figure 8 In this embodiment, a downwardly protruding guide portion 16 is provided on the part of the sealing plug 13 away from the plate 10. When the cap is flipped to nearly 90 degrees, the end of the guide portion 16 is already above the bottle opening. As the cap continues to flip, the guide portion 16 first slides into the bottle opening, ensuring that it is not easily misaligned when the cap is closed. The avoidance slope 14 and the guide portion 16 can be provided individually or both, which yields better results.

[0049] Reference Figure 6 , Figure 7 In another embodiment, the diameter of the flip cover 6 is smaller than the diameter of the bottle cap seat 7, and the overall shape is "convex". A thin-walled section is formed between the lower end of the flip cover 6 and the upper end of the bottle cap seat 7. The long tear line 2 is formed by the thin-walled section between the bottle cap seat 7 and the flip cover 6. The short tear line 3 can also be formed by the thin-walled section between the bottle cap seat 7 and the flip cover 6. The bottle cap with this structure is easier to demold and does not require secondary processing of the long tear line 2 and the short tear line 3.

[0050] refer to Figure 12The short tear line 3 is located on the top surface of the cap 1. When flipping the cap 6, a certain force needs to be applied. By forcibly flipping the cap 6 backward by hand, the connecting strap 8 will be forcibly stretched to a certain extent. The upper end of the connecting strap 8 extends to the top surface of the cap 6, which can increase the length of the connecting strap 8, thereby increasing the limit of the connecting strap 8 that can be forcibly stretched and preventing the connecting strap 8 from breaking. When the cap 6 is flipped to 180° or even 220°, there is a contact point between the cap holder 7 and the cap 6. After releasing the hand, The retraction of the connecting strap 8 causes a tendency for the bottle cap holder 7 and the flip cap 6 to move closer together, thereby increasing the friction at the contact points between them. This causes the bottle cap holder 7 and the flip cap 6 to press against each other and be fixed in place. Without external force, they will not return to a state less than 180 degrees, thus preventing the flip cap 6 from springing back and hitting the nose or face when the consumer drinks. Only when external force presses the flip cap 6 together and the connecting strap 8 is forcibly stretched again will the flip cap 6 return to a state less than 180 degrees and close.

[0051] The length of the inner slit 4 is greater than the length of the outer slit 5. That is, the side of the connecting strap 8 closest to the outer slit 5 is shorter, while the other side closest to the inner slit 4 is longer. When the flip cover 6 is opened and the connecting strap 8 is forcibly stretched, the shorter side of the connecting strap 8 is stretched less than the other side. This shorter side of the connecting strap 8 restricts the flip cover 6 from separating from the bottle cap seat 7 when they are opened, preventing the flip cover 6 from separating from the bottle cap seat 7 by too much distance. This would cause the edge of the flip cover 6 between the connecting straps 8 to be unstable. For example, if the flip cover 6 is opened this time, the position will be inside the bottle mouth, and the next time the flip cover 6 is opened, the position will be outside the bottle cap seat 7, thus serving a positioning function. The longer side of the connecting strap 8 increases the length of the connecting strap 8, thereby increasing the maximum length that the connecting strap 8 can be forcibly stretched and preventing breakage.

[0052] Reference Figure 13 The long tear line 2 has an arc-shaped structure extending from bottom to top near the connecting band 8 and is connected to the inner cut 4. The inner cut 4 is adapted to the arc shape of the long tear line 2 and is a continuation of the long tear line 2. That is, the long tear line 2 and the inner cut 4 form a larger arc-shaped structure. The flip cover 6 and the bottle cap seat are always separated by a tear line distance, which can effectively prevent the flip cover 6 from getting stuck in the gap between the bottle cap seat and the bottle mouth when the flip cover 6 is closed.

[0053] Because the connecting strap 8 is constantly stretched outwards during the opening of the flip cover 6, after a certain number of uses, it will exhibit inelastic deformation that is difficult to fully recover, forming a convex structure on the connecting strap 8, thus creating a prickly, foreign object sensation. The connecting strap 8 has a sloping structure that slopes towards the center from bottom to top (it can be a sloping structure with the same slope throughout, or the slope can gradually decrease from the inner cut 4 to the outer cut 5, i.e., the slope is greatest on the side closer to the inner cut 4 and decreases as it gets closer to the outer cut 5, and the slope on the side located at the outer cut 5 is consistent with the shape of the cover 1 itself). That is, the connecting strap 8 is vertically upwards... The structure was changed to an inward-sloping structure. On the one hand, this increases the length of the connecting strap 8, thereby increasing the limit of its elastic deformation. When the flip cover 6 is opened and closed, the length of the connecting strap 8 remains unchanged, thus reducing the non-elastic deformation of the connecting strap 8 and reducing the feeling of a sharp object. On the other hand, the surface of the connecting strap 8, when viewed from the overall cover 1, resembles a chamfered structure. However, even after the connecting strap 8 undergoes non-elastic deformation and protrudes, it will not protrude too much from the outer diameter of the cover 1, or even not at all. For example, changing from a sloping structure with a large angle to a sloping structure with a small angle can also reduce the feeling of a sharp object.

[0054] Reference Figure 14 A thickened rib 22 is provided inside the connecting band 8 between the inner cut 4 and the outer cut 5, and the thickness of the thickened rib 22 gradually decreases from the inner cut 4 to the outer cut 5. Its function is to allow the connecting band 8 to be stretched sufficiently when the flip cover 6 is opened, without tearing.

[0055] Reference Figure 5 , refer to Figures 8-11 The bottle with the aforementioned flip-top cap includes a bottle body 17. The bottle mouth of the bottle body 17 is provided with an external thread 15. A support block 12 is provided on the upper inner side of the plate 10. The support block 12 is located entirely or partially below the folding groove 11. Here, "below" means that the support block 12 is located entirely or partially below the circumferential plane of the folding groove 11. After being assembled to the bottle mouth, the lower surface of the support block 12 abuts against the upper surface of the thread 15 on the bottle mouth. After the plate 10 is bent at about 90 degrees along the folding groove 11, the plate 10 is lifted upward. Based on the lever principle, an upward force is applied to the flip-top, causing the long tear line to break partially. Then, only a small force is needed to break the entire long tear line, making it easy to open.

[0056] Furthermore, the lower part of the external thread 15 is provided with an upper convex ring 18 and a lower convex ring 19, and a limiting groove is formed between the upper convex ring 18 and the lower convex ring 19; a limiting block 20 is provided on the lower inner wall of the cap 1. After assembly, the limiting block 20 is located between the upper convex ring 18 and the lower convex ring 19. When the bottle cap is rotated in the forward direction, when the lower convex ring 19 blocks the limiting block 20, the sealing plug 13 is fully inserted into the bottle mouth to form a seal. When the bottle cap is rotated in the reverse direction, when the upper convex ring 18 blocks the limiting block 20, the sealing plug 13 is partially disengaged from the bottle mouth, so that a pressure relief gap is formed between the sealing plug 13 and the bottle mouth. Alternatively, the sealing ring 21 may have an upward-bent pressure-relieving bend on the side away from the guide portion 16. When the bottle cap is rotated in the forward direction, after the lower convex ring 19 blocks the limiting block 20, the sealing ring 21, including the pressure-relieving bend, is fully inserted into the bottle mouth to form a seal. When the bottle cap is rotated in the reverse direction, after the upper convex ring 18 blocks the limiting block 20, the pressure-relieving bend is completely or partially disengaged from the bottle mouth, creating a pressure-relieving gap between the pressure-relieving bend and the bottle mouth. This type of bottle is suitable for gaseous beverages such as carbonated drinks. When opening, the bottle cap is rotated first to release pressure, preventing liquid from spraying out when opening.

[0057] Another embodiment of the flip-top bottle cap hook structure of this utility model includes a bottle cap base 7 and a flip cap 6. A connecting strap 8 is provided between the bottle cap base 7 and the flip cap 6. When the flip cap 6 is flipped 180 degrees, there is a contact point between the bottle cap base 7 and the flip cap 6. The tension of the connecting strap 8 causes elastic deformation of the contact point, or the connecting strap 8 is stretched to produce elastic deformation. After the flip cap 6 is flipped more than 180 degrees, the contact point or the connecting strap 8 springs back, keeping the flip cap 6 in a force-retaining state. For this structure... Although the bottle cap holder 7, the flip cap 6, and the connecting strip 8 are injection molded simultaneously, the bottle cap holder 7 and the flip cap 6 are relatively independent. Apart from the connecting strip 8, there are no other connecting parts between them. For this structure, the diameter of the flip cap 6 can be larger than the diameter of the bottle cap holder 7. After closing, the flip cap 6 is directly fitted onto the bottle cap holder 7. Alternatively, an inwardly recessed step can be provided at the upper end of the bottle cap holder 7. After closing, the flip cap 6 is fitted onto the step. A snap-fit ​​structure can also be provided between the flip cap 6 and the bottle cap holder 7 or between the flip cap 6 and the step to keep them snapped together.

[0058] Another embodiment of the hinged cap structure of the flip-open bottle cap of this utility model is as follows:

[0059] A hinged cap structure for a flip-top bottle cap includes a cap holder 7 and a flip cap 6. A symmetrical connecting band 8 is provided between the cap holder 7 and the flip cap 6. An upwardly protruding vertical piece is provided on the cap holder 7 between the connecting band 8. A spring piece is provided on the vertical piece. When the cap holder 7 is screwed onto the bottle, the spring piece fits tightly against the bottle opening. When the flip cap 6 is flipped, it rotates along the outer side of the spring piece, thereby preventing the edge of the flip cap 6 from being inserted between the spring piece and the bottle opening, thus avoiding the flip cap 6 being stuck and unable to be closed or opened.

[0060] The flip cover 6 has a lever portion corresponding to the spring contact portion, which extends the outer edge of the flip cover 6. When the flip cover 6 is flipped, the lever portion rotates along the outer side of the spring contact portion, further preventing the edge of the flip cover 6 from being inserted between the spring contact portion and the bottle mouth. Moreover, during the flipping process, the lever portions poke the spring contact portion against each other, thereby producing a sound. This is the maximum flipping angle designed for the flip cover 6. If it continues to be flipped, there is a possibility of damaging the bottle cap, which serves as a reminder.

[0061] When the flip cover 6 is closed, the lever portion is located above the spring portion, and the edge of the lever portion is flush with the outer wall of the spring portion, or the edge of the lever portion extends beyond the outer wall of the spring portion. This ensures that when the flip cover 6 is opened, the lever portion can rotate along the outer side of the spring portion, and when the flip cover 6 is closed, the lever portion will not interfere with the spring portion. If the bottle cap diameter is large, the overall strength of the bottle cap decreases (i.e., a bottle cap with a large diameter is more prone to deformation than a bottle cap with a small diameter), the spring portion will warp outward and separate from the bottle mouth, and the edge of the lever portion will abut against the inner wall of the spring portion. When opened again, the edge of the lever portion will directly insert into the gap between the spring portion and the bottle mouth.

[0062] The above embodiments do not limit the scope of protection of this utility model. All equivalent modifications and variations made by those skilled in the art without departing from the overall concept of this utility model shall still fall within the scope of this utility model.

Claims

1. A hinged cap structure for a flip-top bottle cap, comprising an integrally formed cap body (1), wherein the cap body (1) is provided with a long tear line (2) and a short tear line (3) along the circumferential direction, wherein the two ends of the long tear line (2) are provided with an inner cut (4) along the axial direction of the cap body (1), and the two ends of the short tear line (3) are provided with an outer cut (5) along the axial direction of the cap body (1), wherein after the long tear line (2) and the short tear line (3) break, the upper part of the long tear line (2) and the short tear line (3) constitutes a flip cap (6), the lower part constitutes a bottle cap seat (7), and the portion between the inner cut (4) and the outer cut (5) constitutes a connecting strip (8); characterized in that When the flip cover (6) is flipped 180 degrees, there is a contact part between the bottle cap seat (7) and the flip cover (6). The tension of the connecting strip (8) causes the contact part to undergo elastic deformation, or the connecting strip (8) is stretched to undergo elastic deformation. After the flip cover (6) is flipped more than 180 degrees, the contact part or the connecting strip (8) rebounds, so that the flip cover (6) is in a force-holding state.

2. The capping structure of the flip-top bottle cap according to claim 1, characterized in that... The long tear line (2) has a downward bending part (9) in the middle, so that the lower edge of the flap (6) forms a downward protruding plate (10).

3. The capping structure of the flip-open bottle cap according to claim 2, characterized in that... A groove (11) is provided between the upper end of the plate (10) and the flip cover (6).

4. The capping structure of the flip-top bottle cap according to claim 3, characterized in that... The cross-section of the groove (11) is V-shaped.

5. The capping structure of the flip-open bottle cap according to claim 2, characterized in that... A sealing plug (13) is provided on the inner top side of the flip cover (6).

6. The capping structure of the flip-open bottle cap according to claim 5, characterized in that... The sealing plug (13) is provided with a relief slope (14) at the part corresponding to the plate (10).

7. The capping structure of the flip-top bottle cap according to claim 6, characterized in that... The sealing plug (13) has a downwardly protruding guide portion (16) at the part away from the plate (10).

8. The capping structure of the flip-open bottle cap according to claim 7, characterized in that... A sealing ring (21) is provided on the outer surface of the sealing plug (13).

9. The hanging cap structure of the flip-open bottle cap according to claim 1, characterized in that... The diameter of the flip cover (6) is smaller than the diameter of the bottle cap seat (7), and the long tear line (2) is formed by the thin-walled portion between the bottle cap seat (7) and the flip cover (6).

10. The capping structure of the flip-top bottle cap according to claim 9, characterized in that... The short tear line (3) is also formed by the thin-walled portion between the cap seat (7) and the flip cap (6).

11. The capping structure of the flip-top bottle cap according to claim 1, characterized in that... The short tear line (3) is located on the top surface of the cover (1).

12. The capping structure of the flip-top bottle cap according to claim 1, characterized in that... The upper end of the connecting strip (8) extends to the top surface of the flip cover (6).

13. The capping structure of the flip-top bottle cap according to claim 1, characterized in that... The long tear line (2) has an arc-shaped structure extending from bottom to top at one end near the connecting band (8) and is connected to the inner cut (4). The inner cut (4) is adapted to the arc shape of the long tear line (2) and is a continuation of the long tear line (2).

14. The capping structure of the flip-top bottle cap according to claim 1 or 13, characterized in that... The connecting strip (8) has a sloping structure that slopes towards the center from bottom to top.

15. The capping structure of the flip-top bottle cap according to claim 14, characterized in that... A thickened reinforcing strip (22) is provided inside the connecting strip (8) between the inner cut (4) and the outer cut (5).

16. The hanging cap structure of the flip-open bottle cap according to claim 15, characterized in that... The thickness of the thickened rib (22) gradually decreases from the inner cut (4) towards the outer cut (5).

17. A bottle employing a flip-top cap as described in any one of claims 1-10, comprising a bottle body (17), wherein the bottle mouth of the bottle body (17) is provided with an external thread (15), characterized in that... A support block (12) is provided on the upper inner side of the plate (10). The support block (12) is located entirely or partially below the groove (11). After being assembled into the bottle mouth, the lower surface of the support block (12) abuts against the upper surface of the external thread (15).

18. A bottle employing a flip-top cap as described in any one of claims 5-8, comprising a bottle body (17), wherein the bottle body (17) has an external thread (15) at its opening, characterized in that... The lower part of the external thread (15) is provided with an upper convex ring (18) and a lower convex ring (19), and a limiting groove is formed between the upper convex ring (18) and the lower convex ring (19); a limiting block (20) is provided on the lower inner wall of the cap (1). After assembly, the limiting block (20) is located between the upper convex ring (18) and the lower convex ring (19). When the bottle cap is rotated in the forward direction, when the lower convex ring (19) blocks the limiting block (20), the sealing plug (13) is fully inserted into the bottle mouth to form a seal. When the bottle cap is rotated in the reverse direction, when the upper convex ring (18) blocks the limiting block (20), the sealing plug (13) is partially disengaged from the bottle mouth, so that a pressure relief gap is formed between the sealing plug (13) and the bottle mouth.

19. A bottle employing the flip-top cap as described in claim 8, comprising a bottle body (17), wherein the bottle mouth of the bottle body (17) is provided with an external thread (15), characterized in that... The lower part of the external thread (15) is provided with an upper convex ring (18) and a lower convex ring (19), and a limiting groove is formed between the upper convex ring (18) and the lower convex ring (19); a limiting block (20) is provided on the lower inner wall of the cap (1), and the sealing ring (21) has an upward pressure relief bend on the side away from the guide part (16); after assembly, the limiting block (20) is located between the upper convex ring (18) and the lower convex ring (19). When the bottle cap is rotated in the forward direction, when the lower convex ring (19) blocks the limiting block (20), the sealing ring (21) is fully inserted into the bottle mouth to form a seal. When the bottle cap is rotated in the reverse direction, when the upper convex ring (18) blocks the limiting block (20), the pressure relief bend is completely or partially disengaged from the bottle mouth, so that a pressure relief gap is formed between the pressure relief bend and the bottle mouth.

20. A hinged cap structure for a flip-top bottle cap, comprising a cap holder (7) and a flip cap (6), wherein a connecting strap (8) is provided between the cap holder (7) and the flip cap (6), characterized in that... When the flip cover (6) is flipped 180 degrees, there is a contact part between the bottle cap seat (7) and the flip cover (6). The tension of the connecting strip (8) causes the contact part to undergo elastic deformation, or the connecting strip (8) is stretched to undergo elastic deformation. After the flip cover (6) is flipped more than 180 degrees, the contact part or the connecting strip (8) rebounds, so that the flip cover (6) is in a force-holding state.

21. A hinged cap structure for a flip-top bottle cap, comprising a cap holder (7) and a flip cap (6), wherein symmetrical connecting strips (8) are provided between the cap holder (7) and the flip cap (6), characterized in that... A vertically protruding part is provided on the bottle cap seat (7) between the connecting band (8), and a spring part is provided on the vertically protruding part. When the bottle cap seat (7) is screwed into the bottle, the spring part fits tightly with the bottle mouth.

22. The capping structure of the flip-top bottle cap according to claim 21, characterized in that... The flip cover (6) is provided with a paddle part corresponding to the spring part. During the flip cover (6) flipping, the paddle parts paddle each other to move the spring part, thereby producing a sound.

23. The capping structure of the flip-top bottle cap according to claim 22, characterized in that... When the flip cover (6) is closed, the paddle part is located above the spring part, and the edge of the paddle part is flush with the outer wall of the spring part, or the edge of the paddle part extends beyond the outer wall of the spring part.

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