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

Abstract

The invention discloses a cap hanging structure of a pull-open type bottle cap 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, the two ends of the long tearing line are provided with inner side notches, the two ends of the short tearing line are provided with outer side notches, and the 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] The invention relates to a packaging container, in particular to a cover for packaging bottles. Background Art

[0002] The same applicant of the present application has earlier applied for a wrench-open beverage bottle cap, application number 202321018918X, and application date April 27, 2023, in which a wrench portion protruding outward is integrally formed on the outer side wall of the lower end of the plate, and a rebuttal piece protruding outward is provided on the top of the bottle cap. During the subsequent actual production and use, the inventor found that the bottle cap had shortcomings. First, the wrench portion and the rebuttal piece protruded outward, which placed high requirements on the mold and production. Second, during the packaging and transportation process, the wrench portion is easily touched, causing local cracking of the plate.

[0003] Subsequently, the applicant submitted a patent application on May 25, 2023, with application number 2023212962416, and the name is a beverage bottle cap with a pull-open structure. The rebuttal piece of the bottle cap extends downward, and there is no wrench part and rebuttal piece extending outward on the bottle cap, which solves the problem of local cracking of the plate due to the wrench part being easily touched during packaging and transportation. However, there is still the problem of high production difficulty. This application is a further improvement on this problem.

[0004] In addition, in patent application No. 2023212962416, a circumferential folding groove is provided on the plate, and the portion below the folding groove is the handle portion. When opening, the handle portion is folded outward along the folding groove, and then the handle portion is lifted upward to break the tear line and open. In the subsequent actual testing process, the applicant found that since the handle portion is small and can only be pinched by two fingers, a large force is required to break the tear line, making it inconvenient to open the bottle cap. Summary of the invention

[0005] In order to overcome the shortcomings of the prior art, the present invention provides a hanging cover structure of a pull-open bottle cap and a bottle which has a simple structure, reduces the difficulty of mold and production, and is easy to open.

[0006] The technical solution adopted by the present invention to solve its technical problem is: A hanging cap structure for a flip-open bottle cap comprises an integrally formed cap body, the cap body being provided with a long tear line and a short tear line along a circumferential direction, inner incisions along the axial direction of the cap body being provided at both ends of the long tear line, and outer incisions along the axial direction of the cap body being provided at both ends of the short tear line, after the long tear line and the short tear line are broken, the upper parts of the long tear line and the short tear line constitute a flip cap, the lower parts constitute a bottle cap seat, and the part between the inner incision and the outer incision constitutes a connecting belt; when the flip cap is flipped 180 degrees, there is a contact part between the bottle cap seat and the flip cap, the tension of the connecting belt causes the contact part to produce elastic deformation, or the connecting belt is stretched to produce elastic deformation, and after the flip cap is flipped over more than 180 degrees, the contact part or the connecting belt rebounds, so that the flip cap is in a force-retaining state.

[0007] As a further improvement of the present invention, the middle portion of the long tear line has a bent portion bent downward, so that the lower edge of the flip cover forms a plate protruding downward.

[0008] As a further improvement of the present invention, 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.

[0009] As a further improvement of the present invention, a sealing plug is provided on the inner side of the top of the flip cover, an inclined avoidance slope is provided at the position of the sealing plug corresponding to the plate, a downwardly protruding guide portion is provided at the position of the sealing plug away from the plate, and a sealing ring is provided on the outer surface of the sealing plug.

[0010] As a further improvement of the present invention, 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 wall portion between the bottle cap seat and the flip cover, and the short tear line is also formed by the thin wall portion between the bottle cap seat and the flip cover.

[0011] The first bottle using the above-mentioned flip-open 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 inner upper end of the plate. The support block is completely or partially located below the folding groove. After being assembled to the bottle mouth, the lower surface of the support block abuts against the upper surface of the external thread.

[0012] A second bottle using the above-mentioned pull-open bottle cap comprises a bottle body, the bottle mouth of the bottle body is provided with an external thread, the lower part of the external thread is provided with an upper convex ring and a lower convex ring, and a limiting groove is formed between the upper convex ring and the lower convex ring; a limiting block is provided on the lower inner wall of the cover body, and after assembly, the limiting block is located between the upper convex ring and the lower convex ring, and the bottle cap is rotated forward, when the lower convex ring blocks the limiting block, the sealing plug is fully inserted into the bottle mouth to form a seal, and the bottle cap is rotated backward, when the upper convex ring blocks the limiting block, the sealing plug is partially separated from the bottle mouth, so that a pressure relief gap is formed between the sealing plug and the bottle mouth.

[0013] A third bottle adopting the above-mentioned pull-open bottle cap comprises a bottle body, the bottle mouth of the bottle body is provided with an external thread, the lower part of the external thread is provided with an upper convex ring and a lower convex ring, and a limiting groove is formed between the upper convex ring and the lower convex ring; a limiting block is provided on the lower inner wall of the cover body, and the side of the sealing ring away from the guide part has a pressure relief bend bent upward; after assembly, the limiting block is located between the upper convex ring and the lower convex ring, and the bottle cap is rotated forward, when the lower convex ring blocks the limiting block, the sealing ring is completely inserted into the bottle mouth to form a seal, and the bottle cap is rotated backward, when the upper convex ring blocks the limiting block, the pressure relief bend is completely or partially separated from the bottle mouth, so that a pressure relief gap is formed between the pressure relief bend and the bottle mouth.

[0014] A hanging cap structure for a flip-open bottle cap comprises a bottle cap seat and a flip cover, wherein a connecting belt is arranged between the bottle cap seat and the flip cover, and when the flip cover is flipped 180 degrees, there is a contact portion between the bottle cap seat and the flip cover, and the tension of the connecting belt causes the contact portion to produce elastic deformation, or the connecting belt is stretched to produce elastic deformation, and after the flip cover is flipped over 180 degrees, the contact portion or the connecting belt rebounds, so that the flip cover is in a force-retaining state.

[0015] The beneficial effects of the present invention are as follows: by setting the length and position of the inner incision and the outer incision, when the flip cover is flipped 180 degrees, there is a contact portion between the bottle cap seat and the flip cover, the tension of the connecting belt causes the contact portion to produce elastic deformation, or the connecting belt is stretched to produce elastic deformation, after the flip cover is flipped more than 180 degrees, the contact portion or the connecting belt rebounds, so that the flip cover is in a force-maintained state, thereby simplifying the structure of the bottle cap and further reducing the difficulty of the mold and production.

[0016] In addition, a folding groove is provided between the upper end of the plate of the present invention and the flip cover, and a support block is provided at the inner upper end of the plate. After being assembled to the bottle mouth, the lower surface of the support block is against the upper surface of the thread on the bottle mouth. When opening, the plate is bent along the folding groove, and the support block rotates on the upper surface of the thread. Based on the principle of lever, an upward force is applied to the flip cover to partially break the long tear line, and then only a small force is needed to break the long tear line completely, making it easy to open. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1 It is one of the structural schematic diagrams of the first embodiment of the present invention; Figure 2 This is the second structural schematic diagram of the first embodiment of the present invention; Figure 3 yes Figure 1 The schematic diagram of the structure of the bottle cap when the flip cover is opened 180 degrees; Figure 4 yes Figure 1 The schematic diagram of the structure of the bottle cap after the flip cover is opened more than 180 degrees; Figure 5 yes Figure 1 A cross-sectional view of the bottle cap after being assembled to the bottle mouth; Figure 6 It is a structural diagram of a second embodiment of the present invention; Figure 7 yes Figure 6 a cross-sectional view of the bottle cap shown; Figure 8 It is a structural diagram of a third embodiment of the present invention; Fig. 9 yes Figure 8 A cross-sectional view of the sealing state of the bottle cap after being assembled to the bottle mouth; Fig.10 yes Figure 8 A cross-sectional view of the bottle cap in a pressure relief state after being assembled to the bottle mouth; Fig.11 It is a schematic diagram of the structure of the bottle. Implementation

[0019] Reference Figures 1 to 11 A hanging cap structure of a pull-open bottle cap comprises a cap body 1, which is integrally injection-molded from a plastic material having a certain elasticity. The cap body 1 is provided with a long tear line 2 and a short tear line 3 along the circumferential direction. The two ends of the long tear line 2 are provided with inner cuts 4 along the axial direction of the cap body 1, and the two ends of the short tear line 3 are provided with outer cuts 5 along the axial direction of the cap body 1. The circumferential direction in this application refers to along the circumferential surface, which can be an arc located in the same plane, or a special-shaped line with upper and lower bending parts not in the same plane. The axial direction is relative to the circumferential direction, and the axial direction can be a direction parallel to the axis of the hanging cap, or an inclined direction with a certain angle. The long tear line and the short tear line can be indentations, or dot-dash line cuts, etc.

[0020] After the long tear line 2 and the short tear line 3 are broken, the upper part of the long tear line 2 and the short tear line 3 constitutes a flip cover 6, the lower part constitutes a bottle cap seat 7, and the part between the inner incision 4 and the outer incision 5 constitutes a connecting belt 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, and the tension of the connecting belt 8 causes the contact part to produce elastic deformation, or the connecting belt 8 is stretched to produce elastic deformation. After the flip cover 6 is flipped more than 180 degrees, the contact part or the connecting belt 8 rebounds, so that the flip cover 6 is in a force-maintained state, thereby preventing the flip cover 6 from touching the mouth and nose when drinking. The present invention sets the length and position of the inner incision and the outer incision so that the flip cover is in a force-maintained state after being flipped more than 180 degrees, thereby simplifying the structure of the bottle cap and further reducing the difficulty of setting up molds and production.

[0021] The bottle cap is circular, and the length and position of the inner incision 4 and the outer incision 5 are reasonably set. Generally, the distance between the inner incision 4 and the outer incision 5 should be greater than 1 mm. The lengths of the inner incision 4 and the outer incision 5 can be the same or slightly different. The shapes can be straight lines in the axial direction, oblique lines with a certain angle to the axis, or curves of any shape. When the flip cover 6 is turned over 180 degrees, the part outside the inner incision 4 is arched, and the length of the incision is less than the sum of the heights of the arches of the flip cover 6 and the bottle cap seat 7 by 0.1 to 5 mm, so that there is a contact portion between the bottle cap seat 7 and the flip cover 6. The first solution is that the material of the bottle cap seat 7 and the flip cover 6 is relatively thin and soft, and the bottle cap seat 7 and / or the flip cover 6 produce elastic deformation at the contact position, that is, the tension of the connecting belt 8 causes the contact position to produce elastic deformation (the slight stretching of the connecting belt 8 can be ignored). When the flip cover 6 is flipped 180 degrees, the contact position and the connecting belt 8 are basically on the same plane. After flipping 180 degrees, the contact position is transferred to the top of the connecting belt 8. After letting go, the contact position rebounds, so that the flip cover 6 can be kept in a force-retained state.

[0022] The second case is that the bottle cap seat 7 and the flip cover 6 are thicker and harder and not easily deformed, so the thickness of the connecting belt 8 can be made smaller and more elastic. When the flip cover 6 is flipped 180 degrees, the connecting belt 8 is stretched to produce elastic deformation (the slight deformation of the bottle cap seat 7 and the flip cover 6 can be ignored). After the flip cover 6 is flipped more than 180 degrees, the connecting belt 8 is let go, and the connecting belt 8 rebounds, so that the flip cover 6 is in a force-retained state.

[0023] The middle part of the long tear line 2 has a downwardly bent portion 9, so that the lower edge of the flip cover 5 forms a downwardly protruding plate 10. The bent portion of the cover is preferably a through incision to facilitate opening of the plate 10. The long tear line 2 is located below and on both sides of the plate 10. The portion below the plate 10 should have a certain width and a slope to facilitate opening.

[0024] A folding groove 11 is provided between the upper end of the plate 10 and the flip cover 5. When the plate 10 is pried outward from the lower end, the plate 10 is bent along the folding groove 11 and is easy to open. The cross-section of the folding groove 11 is V-shaped. The angles of the two side surfaces of the folding groove 11 can limit the bending angle of the plate 10 along the folding groove 11. The inclination angles of the two side surfaces can be 10-65 degrees. When opened, the plate 10 is bent 20-130 degrees along the folding groove 11.

[0025] The top inner side of the flip cover 6 is provided with a sealing plug 13. 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 is provided with an inwardly inclined escape slope 14 at the lower end corresponding to the plate 10. The escape slope 14 facilitates the sealing plug 13 to be inserted into or removed from the bottle mouth. The outer surface of the sealing plug 13 is provided with a sealing ring 21. In addition, in order to facilitate the sealing plug to enter and leave the bottle mouth, the height of the sealing plug cannot be too large. Figure 8 In this embodiment, a downwardly protruding guide portion 16 is provided at a portion of the sealing plug 13 away from the plate 10. When the flip cover is flipped nearly 90 degrees, the end of the guide portion 16 is already located above the bottle mouth. When the flip cover continues to flip, the guide portion 16 first slides into the bottle mouth, ensuring that it is not easy to be misaligned when the flip cover is closed. Only one of the avoidance slope 14 and the guide portion 16 can be provided, or both can be provided, which has a better effect.

[0026] Reference Figure 6 , Figure 7 As 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 a "convex" shape. A thin-walled portion 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 portion between the bottle cap seat 7 and the flip cover 6, and the short tear line 3 can also be formed by the thin-walled portion between the bottle cap seat 7 and the flip cover 6. The bottle cap with this structure is easier to demould, and does not require secondary processing of the long tear line 2 and the short tear line 3.

[0027] Reference Figure 5 , refer to Figure 8-Figure 11The bottle of the flip-open bottle cap using the above-mentioned bottle cap comprises a bottle body 17, the bottle mouth of the bottle body 17 is provided with an external thread 15, and the inner upper end of the plate 10 is provided with a support block 12, and the support block 12 is completely or partially located below the folding groove 11. The below here means that the support block 12 is completely or partially located below the circumferential plane where the folding groove 11 is located. After being assembled to the bottle mouth, the lower surface of the support block 12 is against the upper surface of the thread 15 on the bottle mouth. After the plate 10 is bent about 90 degrees along the folding groove 11, the plate 10 is continuously lifted upward. Based on the principle of lever, an upward force is applied to the flip cover to partially break the long tear line, and then only a small force is needed to break the long tear line completely, which is convenient for opening.

[0028] Furthermore, an upper convex ring 18 and a lower convex ring 19 are provided at the lower portion of the external thread 15, 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 cover body 1, and after assembly, the limiting block 20 is located between the upper convex ring 18 and the lower convex ring 19, and the bottle cap is rotated forward, 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, and the bottle cap is rotated reversely, when the upper convex ring 18 blocks the limiting block 20, the sealing plug 13 is partially separated from the bottle mouth, so that a pressure relief gap is formed between the sealing plug 13 and the bottle mouth. It may also be that the side of the sealing ring 21 away from the guide portion 16 has an upwardly bent pressure relief bend, and when the bottle cap is rotated forward, when the lower convex ring 19 blocks the limit block 20, the sealing ring 21 including the pressure relief bend is fully inserted into the bottle mouth to form a seal, and when the bottle cap is rotated reversely, when the upper convex ring 18 blocks the limit block 20, the pressure relief bend is fully or partially separated from the bottle mouth, so that a pressure relief gap is formed between the pressure relief bend and the bottle mouth. This kind of bottle is suitable for bottles with gas such as carbonated beverages. When opening, the bottle cap is rotated first to relieve pressure to avoid liquid spraying when opening.

[0029] Another embodiment of the hanging cover structure of the flip-open bottle cap of the present invention comprises a bottle cap seat 7 and a flip cover 6, wherein a connecting belt 8 is arranged between the bottle cap seat 7 and the flip cover 6, and when the flip cover 6 is flipped 180 degrees, there is a contact portion between the bottle cap seat 7 and the flip cover 6, and the tension of the connecting belt 8 causes the contact portion to produce elastic deformation, or the connecting belt 8 is stretched to produce elastic deformation, and after the flip cover 6 is flipped over 180 degrees, the contact portion or the connecting belt 8 rebounds, so that the flip cover 6 is in a force-retaining state. For this structure, although The bottle cap seat 7, the flip cover 6 and the connecting belt 8 are injection molded at the same time, but the bottle cap seat 7 and the flip cover 6 are relatively independent, and there is no other connecting part between the two except the connecting belt 8. For this structure, the diameter of the flip cover 6 can be larger than the diameter of the bottle cap seat 7. After closing, the flip cover 6 is directly mounted on the bottle cap seat 7, or an inwardly retracted step portion can be provided at the upper end of the bottle cap seat 7, and the flip cover 6 is mounted on the step portion after closing. A buckle structure can also be provided between the flip cover 6 and the bottle cap seat 7 or between the flip cover 6 and the step portion to keep the two buckled.

[0030] The above implementation modes cannot limit the protection scope of the present invention. The equivalent modifications and changes made by those skilled in the art without departing from the overall concept of the present invention are still within the scope of the present invention.

Claims

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

2. The hanging cover structure of the flip-open bottle cap according to claim 1, characterized in that The middle portion of the long tear line (2) has a bent portion (9) bent downward, so that the lower edge of the flip cover (5) forms a plate (10) protruding downward.

3. The hanging cover structure of the flip-open bottle cap according to claim 2, characterized in that A folding groove (11) is provided between the upper end of the plate (10) and the flip cover (5).

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

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

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

7. The hanging cover structure of the flip-open bottle cap according to claim 6, characterized in that A downwardly protruding guide portion (16) is provided at a portion of the sealing plug (13) away from the plate (10).

8. The hanging cover 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 cover 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 a thin-walled portion between the bottle cap seat (7) and the flip cover (6).

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

11. A bottle using a flip-open bottle cap as claimed in any one of claims 1 to 10, comprising a bottle body (17), the bottle mouth of the bottle body (17) being provided with an external thread (15), characterized in that A support block (12) is provided at the inner upper end of the plate (10), and the support block (12) is located entirely or partially below 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 external thread (15).

12. A bottle using a flip-open bottle cap as claimed in any one of claims 5 to 8, comprising a bottle body (17), the bottle mouth of the bottle body (17) being provided with an external thread (15), characterized in that An upper convex ring (18) and a lower convex ring (19) are provided at the lower part of the external thread (15), 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 cover body (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 separated from the bottle mouth, so that a pressure relief gap is formed between the sealing plug (13) and the bottle mouth.

13. A bottle using the flip-open bottle cap as claimed in claim 8, comprising a bottle body (17), the bottle mouth of the bottle body (17) being provided with an external thread (15), characterized in that An upper convex ring (18) and a lower convex ring (19) are provided at the lower part of the external thread (15), 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 cover body (1), and a side of the sealing ring (21) away from the guide portion (16) has a pressure relief bend that is bent upward; 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 completely 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 separated from the bottle mouth, so that a pressure relief gap is formed between the pressure relief bend and the bottle mouth.

14. A hanging cap structure for a flip-open bottle cap, comprising a bottle cap seat (7) and a flip cover (6), wherein a connecting belt (8) is provided between the bottle cap seat (7) and the flip cover (6), characterized in that When the flip cover (6) is flipped over 180 degrees, there is a contact portion between the bottle cap seat (7) and the flip cover (6), and the tension of the connecting belt (8) causes the contact portion to produce elastic deformation, or the connecting belt (8) is stretched to produce elastic deformation. After the flip cover (6) is flipped over more than 180 degrees, the contact portion or the connecting belt (8) rebounds, so that the flip cover (6) is in a force-retaining state.

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