Convenient-to-use pull-open cover assembly

Abstract

The present application discloses an easy-to-use pull-open type cover assembly, including a cover base for connecting with an opening portion of a container. A flip-top for opening or closing the opening portion of the container is connected to the cover base in a turnover manner through a connecting member. One side of the flip-top away from the connecting member is provided with an opening plate which extends towards one side of the cover base and can flip relative to the flip-top. The opening plate is provided with a jacking structure for acting on the opening plate to flip outward relative to the flip-top when the cover assembly moves relative to the opening portion of the container. When the flip-top needs to be opened, a user operates the cover assembly to move relative to the opening portion of the container, so that the jacking structure acts on the opening plate to flip outward relative to the flip-top, and then the user operates the opening plate to act on the flip-top to flip relative to the cover base to open the opening portion of the container. The cover assembly features convenient operation, easy opening, and labor-saving.

Description

TECHNICAL FIELD

[0001] The present application relates to packaging containers, and in particular, to an easy-to-use pull-open type cover assembly.BACKGROUND

[0002] At present, for flip-top bottle caps, an outwardly protruding wrench is arranged on the flip-top for ease of opening, and the bottle cap can only be opened by prying the wrench upward. On the one hand, a relatively large opening force is required, leading to inconvenience in use; on the other hand, the outwardly protruding wrench-like mold has a complex structure, which increases the difficulty of injection molding, and thus leads to a relatively high manufacturing cost of the bottle cap.

[0003] In addition, the applicant filed a patent application on May 25, 2023, with the application number 2023212962416 and the title "PULL-OPEN TYPE STRUCTURE BEVERAGE BOTTLE CAP". A counter sheet of the bottle cap extends downward, and no outwardly extending wrench portion or counter sheet is arranged on the bottle cap. In this technical solution, a circumferential folding groove is arranged on the plate, and the part below the folding groove is a handle portion. When opening, the handle portion is folded outward along the folding groove, and then the handle portion is lifted upward to break a tear line for opening. In a subsequent actual test 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, resulting in inconvenience in opening the bottle cap.

[0004] Accordingly, the present application is proposed to address the aforementioned problems.SUMMARY

[0005] The objective of the present application is to overcome the shortcomings of the prior art by providing an easy-to-use pull-open type cover assembly. By providing a jacking structure on an opening plate, operating the cover assembly to move relative to an opening portion of the container can act on the opening plate to flip outward relative to a flip-top, thereby facilitating a user to operate the opening plate to flip the flip-top. It features convenient operation, easy opening, and low cost.

[0006] The present application is implemented through the following technical solutions: an easy-to-use pull-open type cover assembly, including a cover base for connecting with an opening portion of a container, where a flip-top for opening or closing the opening portion of the container is connected to the cover base in a turnover manner through a connecting member; the flip-top is provided with a jacking structure for acting on the flip-top to flip relative to the cover base when the cover assembly moves relative to the opening portion of the container; and / or one side of the flip-top away from the connecting member is provided with an opening plate which extends towards one side of the cover base and can flip relative to the flip-top, and the opening plate is provided with a jacking structure for acting on the opening plate to flip outward relative to the flip-top when the cover assembly moves relative to the opening portion of the container.

[0007] The cover assembly is in threaded connection with the opening portion of the container, and the opening plate is provided with a jacking structure for acting on the opening plate to flip outward relative to the flip-top when the cover assembly rotates upward relative to the opening portion of the container.

[0008] The jacking structure includes a plate threaded section arranged on an inner wall of the opening plate, and the plate threaded section is provided with a jacking protrusion for pushing and overlapping with a male thread on the opening portion of the container when the cover assembly rotates upward relative to the opening portion of the container for acting on the opening plate to flip outward relative to the flip-top.

[0009] An upper surface of the plate threaded section is lower than that of a female thread of the cover assembly. An inner surface of the plate threaded section is arranged in a planar manner.

[0010] The jacking structure is a jacking bump arranged on the flip-top and / or the opening plate and used for cooperating with a container bump on the opening portion of the container.

[0011] A clamping protrusion for clamping into a limiting groove on the opening portion of the container is arranged on an inner side of the cover base.

[0012] A folding groove is arranged between an upper end of the opening plate and the flip-top. The folding groove has a V-shaped cross-section.

[0013] The flip-top is connected to the cover base through a tearable connection point / thin position, and / or the opening plate is connected to the flip-top through a tearable connection point / thin position.

[0014] A sealing plug is arranged on an inner side the flip-top. An inclined evasion surface is arranged on one side of the sealing plug corresponding to the opening plate, and / or a guiding portion is arranged on one side of the sealing plug away from the opening plate.

[0015] The flip-top is connected to the cover base through a breakable or tearable connecting tear line with an opening, and the connecting member is formed at an opening part of the connecting tear line.

[0016] Two pairs of axial tearing portions are arranged at the opening part of the connecting tear line, and the connecting member is formed after the tearing portions break.

[0017] A breaking portion is arranged between the cover base and the flip-top between the two connecting members.

[0018] Compared with the prior art, the present application has the following advantages: 1. According to the present application, when the flip-top needs to be opened, the user operates the cover assembly to move relative to the opening portion of the container, so that the jacking structure acts on the opening plate to flip outward relative to the flip-top, and then the user operates the opening plate to act on the flip-top to flip relative to the cover base to open the opening portion of the container. The cover assembly features convenient operation, easy opening, and labor-saving. 2. The upper surface of the plate threaded section is lower than that of the female thread of the cover assembly, so that when the cover assembly is screwed onto the opening portion of the container, the plate threaded section will not be pushed by the male thread of the opening portion of the container and will not be subjected to a force, preventing the opening plate from being jacked open during assembly. 3. The inner surface of the plate threaded section is arranged in a planar manner, which facilitates the overlapping of the plate threaded section of the opening plate with the male thread on the opening portion of the container, thereby preventing the cover assembly from slipping off, and better jacking open the opening plate at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The embodiments of the present application will be further described in detail below with reference to the accompanying drawings. FIG. 1 is a three-dimensional diagram 1 of Embodiment 1 of the present application; FIG. 1 is a three-dimensional diagram 2 of Embodiment 1 of the present application; FIG. 3 is a sectional view of Embodiment 1 of the present application; FIG. 4 is a sectional view of Embodiment 1 of the present application when it is rotated downward to cooperate with a male thread on an opening portion of a container; FIG. 5 is a schematic diagram of a positional relationship of Embodiment 1 of the present application when it is rotated downward to cooperate with a male thread on an opening portion of a container; FIG. 6 is a sectional view of Embodiment 1 of the present application when it is rotated upward to cooperate with a male thread on an opening portion of a container; FIG. 7 is a schematic diagram of a positional relationship of Embodiment 1 of the present application when it is rotated upward to cooperate with a male thread on an opening portion of a container; FIG. 8 is a sectional view 1 of Embodiment 2 of the present application when it is connected to an opening portion of the container; FIG. 9 is a sectional view 2 of Embodiment 2 of the present application when it is connected to an opening portion of the container; FIG. 10 is a three-dimensional diagram of a container of the present application; FIG. 11 is a three-dimensional diagram 1 of Embodiment 3 of the present application; FIG. 12 is a three-dimensional diagram 2 of Embodiment 3 of the present application; FIG. 13 is a schematic structural diagram of a flip-top opening process of Embodiment 3 of the present application; and FIG. 14 is a sectional view of Embodiment 3 of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Embodiments of the present application will be described in detail below with reference to FIGs. 1 to 14.Embodiments 1 and 3:

[0021] As shown in FIGs. 1-7 and 10-14, an easy-to-use pull-open cover assembly of the present application includes a cover base 1 for connecting with an opening portion of a container 100. A flip-top 2 for opening or closing the opening portion of the container 100 is connected to the cover base 1 in a turnover manner through a connecting member 11. One side of the flip-top 2 away from the connecting member 11 is provided with an opening plate 21 which extends towards one side of the cover base 1 and can flip relative to the flip-top 2. The opening plate 21 is provided with a jacking structure 3 for acting on the opening plate 21 to flip outward relative to the flip-top 2 when the cover assembly moves relative to the opening portion of the container 100. Preferably, the cover assembly is in threaded connection with the opening portion of the container 100, and the opening plate 21 is provided with a jacking structure 3 for acting on the opening plate 21 to flip outward relative to the flip-top 2 when the cover assembly rotates upward relative to the opening portion of the container 100. In the present application, when it is necessary to operate the flip-top to flip to open the opening portion of the container, a user operates the cover assembly to rotate upward relative to the opening portion of the container, so that the jacking structure acts on the opening plate to flip outward relative to the flip-top, thus forming an operating space between the opening plate and the flip-top for a hand of the user to access and operate the opening plate. Then, the user only needs to operate the opening plate to act on the flip-top to flip relative to the cover base to open the opening portion of the container. Therefore, the cover assembly of the present application features convenient operation, easy opening, labor-saving, and low cost.

[0022] When the cover assembly rotates upward relative to the opening portion of the container to a position where it can no longer move upward, on the one hand, the sealing plug is partially or completely disengaged from the opening portion of the container (if the container is filled with carbonated beverages, deflating can be started); on the other hand, the plate threaded section 31 and the jacking protrusion 32 are disengaged from the male thread on the opening portion of the container and are not affected by the male thread. In this way, the opening plate 21 bears almost no resistance when the flip-top is opened, making it relatively easy for a consumer to open the opening plate 21 and tear open the flip-top during use.

[0023] When the cover assembly on the opening portion of container 100 rotates downward, an upper surface of an internal screw thread of the cover assembly is in contact with a lower surface of an external screw thread of the opening portion of the container 100. Since the screw threads are inclined, the screw thread of the cover assembly is gradually pushed down by the screw thread of the opening portion of the container 100, resulting in downward rotation. In addition, when the cover assembly rotates downward, the lower surface of the internal screw thread of the cover assembly is disengaged from the upper surface of the external screw thread of the opening portion of the container 100, i. e., a gap exists.

[0024] When the cover assembly that covers the opening portion of the container 100 needs to be screwed out of the opening portion of the container 100, a lower surface of the internal screw thread of the cover assembly is in contact with an upper surface of the external screw thread of the opening portion of the container 100. Since the screw threads are inclined, the screw thread of the cover assembly is gradually pushed up by the screw thread of the opening portion of the container 100, resulting in upward rotation. In addition, when the cover assembly rotates upward, the upper surface of the internal screw thread of the cover assembly is disengaged from the lower surface of the external screw thread of the opening portion of the container 100, i. e., a gap exists.

[0025] To reduce the assembly steps and mold opening costs, the cover base 1, the connecting member 11, and the flip-top 2 are integrally injection-molded from materials such as plastic. The flip-top 2 is connected to the cover base 1 through a breakable or tearable connecting tear line with an opening, and the connecting tear line can be an intermittent cut or a thin-walled portion; and the connecting tear line may be arranged on the inner side of the cover assembly, or may be arranged on the outer side of the cover assembly. When the cover is opened for the first time, the connecting tear line is torn or broken, and the connecting member 11 is formed at an opening part of the connecting tear line.

[0026] As shown in FIGs. 11-14, two pairs of axial tearing portions 41 are arranged at the opening part of the connecting tear line 4, and the connecting member 11 is formed after the tearing portions 41 break. In this embodiment, four tearing portions 41 are arranged, two on the left side and two on the rear side. After the four tearing portions 41 break, two connecting members 11 are formed. A breaking portion 42 is arranged between the cover base 1 and the flip-top 2 between the two connecting members, facilitating rotational opening.

[0027] As shown in FIGs. 11-14, the opening plate 21 and the flip-top 2 are integrally formed as an integral structure.

[0028] As shown in FIGs. 1-7 and 11-14, to better jack the opening plate open, the jacking structure 3 includes a plate threaded section 31 arranged on an inner wall of the opening plate 21, and the plate threaded section 31 is provided with a jacking protrusion 32 for pushing and overlapping with a male thread 110 on the opening portion of the container 100 when the cover assembly rotates upward relative to the opening portion of the container 100 for acting on the opening plate 21 to flip outward relative to the flip-top 2. During transportation or movement, the blocking fit between the jacking protrusion and the male thread 110 can prevent the female thread of the cover assembly from loosening due to jolting, ensuring that the cover assembly is fitted in place and will not loosen or even be opened before the consumer drinks. In the present application, the jacking structure 3 of the flip-top 2 is identical to the jacking structure 3 of the opening plate 21, which will not be repeated herein.

[0029] As shown in FIGs. 5 and 7, the upper surface of the plate threaded section 31 is lower than that of the female thread 20 of the cover assembly, so that when the cover assembly is screwed onto the opening portion of the container, the plate threaded section will not be pushed by the male thread of the opening portion of the container and will not be subjected to a force, preventing the opening plate from being jacked open during assembly.

[0030] As shown in FIGs. 5 and 7, the inner surface of the plate threaded section 31 is arranged in a planar manner, which facilitates the overlapping of the plate threaded section of the opening plate with the male thread on the opening portion of the container, thereby preventing the cover assembly from slipping off, and better jacking open the opening plate at the same time.

[0031] To provide another embodiment of the jacking structure for facilitating jacking open, the jacking structure 3 is a jacking bump arranged on the flip-top 2 and / or the opening plate 21 and used for cooperating with a container bump on the opening portion of the container 100. When the cover assembly is operated to move relative to the opening portion of the container 100, the jacking bump overlaps or abuts against the container bump, thus acting on the opening plate to flip outward relative to the flip-top.

[0032] As shown in FIGs. 11-14, a clamping protrusion for clamping into a limiting groove on the opening portion of the container 100 is arranged on an inner side of the cover base 1. The cover base 1 may or may not be provided with a thread; if the cover base 1 is not provided with a thread, the cover base 1 will not move upward when the cover assembly rotates; and if the cover base 1 is provided with a thread, the clamping protrusion is blocked by the limiting groove and will not move upward or only move upward by a small distance. When opening, the cover assembly is rotated, and the clamping protrusion of the cover base is blocked by the corresponding side wall of the limiting groove on the opening portion of the container 100, thus not moving upward or only moving upward by a small distance. However, the threaded section (female thread) of the flip-top interacts with the male thread of the opening portion of the container, causing the flip-top to move upward by a relatively large distance, which results in the connecting tear line 4 breaking from the middle part. Under the action of the traction force at the opening part of the connecting tear line 4, the flip-top forms an opening plate expanding outward at the part where the connecting tear line is broken. Then, the flip-top can be opened only by pushing the opening plate upward, without the need to provide an additional wrench, which reduces the processing difficulty and also facilitates opening.

[0033] As shown in FIG. 1, a folding groove 211 is arranged between an upper end of the opening plate 21 and the flip-top 2. By prying outward from a lower end of the opening plate, the opening plate is bent along the folding groove 211, facilitating opening the container. The folding groove 211 has a V-shaped cross-section, and the angle of the two side surfaces of the folding groove 211 can define the bending angle of the opening plate 21 along the folding groove 211. The angle of inclination of the two side surfaces may be 10-65°, and the opening plate 21 bends by 20-130° along the folding groove 211 during opening.

[0034] As shown in FIG. 1, the flip-top 2 is connected to the cover base 1 through a tearable connection point / thin position 22, and / or the opening plate 21 is connected to the flip-top 2 through a tearable connection point / thin position 22, which can achieve an anti-counterfeiting effect.

[0035] As shown in FIGs. 2 and 3, to improve the sealing performance, a sealing plug 23 is arranged on an inner side the flip-top 2.Embodiment 2:

[0036] The difference between Embodiment 2 and Embodiment 1 lies in, as shown in FIGs. 8 and 9, an inclined evasion surface 231 is arranged on one side of the sealing plug 23 corresponding to the opening plate 21, and the inclined evasion surface 231 facilitates the sealing plug 23 to be inserted into or disengaged from the opening portion of the container.

[0037] As shown in FIGs. 8 and 9, a guiding portion 232 is arranged on one side of the sealing plug 23 away from the opening plate 21. When the flip-top is flipped approximately 90°, the end of the guiding portion 232 is already positioned above the opening portion of the container. If the flipping continues, the guiding portion 232 will first slide into the opening portion of the container, ensuring that misalignment is less likely to occur when the flip-top is closed. Either the inclined evasion surface 231 or the guiding portion 232 may be arranged alone, or both may be arranged for a better effect.

Claims

1. An easy-to-use pull-open type cover assembly, comprising a cover base (1) for connecting with an opening portion of a container (100), wherein a flip-top (2) for opening or closing the opening portion of the container (100) is connected to the cover base (1) in a turnover manner through a connecting member (11); the flip-top (2) is provided with a jacking structure (3) for acting on the flip-top (2) to flip relative to the cover base (1) when the cover assembly moves relative to the opening portion of the container (100); and / or one side of the flip-top (2) away from the connecting member (11) is provided with an opening plate (21) which extends towards one side of the cover base (1) and can flip relative to the flip-top (2), and the opening plate (21) is provided with a jacking structure (3) for acting on the opening plate (21) to flip outward relative to the flip-top (2) when the cover assembly moves relative to the opening portion of the container (100).

2. The easy-to-use pull-open type cover assembly according to claim 1, wherein the cover assembly is in threaded connection with the opening portion of the container (100), and the opening plate (21) is provided with a jacking structure (3) for acting on the opening plate (21) to flip outward relative to the flip-top (2) when the cover assembly rotates upward relative to the opening portion of the container (100).

3. The easy-to-use pull-open type cover assembly according to claim 2, wherein the jacking structure (3) comprises a plate threaded section (31) arranged on an inner wall of the opening plate (21), and the plate threaded section (31) is provided with a jacking protrusion (32) for pushing and overlapping with a male thread (110) on the opening portion of the container (100) when the cover assembly rotates upward relative to the opening portion of the container (100) for acting on the opening plate (21) to flip outward relative to the flip-top (2).

4. The easy-to-use pull-open type cover assembly according to claim 3, wherein an upper surface of the plate threaded section (31) is lower than that of a female thread (20) of the cover assembly.

5. The easy-to-use pull-open type cover assembly according to claim 3, wherein an inner surface of the plate threaded section (31) is arranged in a planar manner.

6. The easy-to-use pull-open type cover assembly according to claim 1, wherein the jacking structure (3) is a jacking bump arranged on the flip-top (2) and / or the opening plate (21) and used for cooperating with a container bump on the opening portion of the container (100).

7. The easy-to-use pull-open type cover assembly according to claim 1, wherein a clamping protrusion for clamping into a limiting groove on the opening portion of the container (100) is arranged on an inner side of the cover base (1).

8. The easy-to-use pull-open type cover assembly according to claim 1, wherein a folding groove (211) is arranged between an upper end of the opening plate (21) and the flip-top (2).

9. The easy-to-use pull-open type cover assembly according to any one of claims 1 to 8, wherein the flip-top (2) is connected to the cover base (1) through a tearable connection point / thin position (22), and / or the opening plate (21) is connected to the flip-top (2) through a tearable connection point / thin position (22).

10. The easy-to-use pull-open type cover assembly according to any one of claims 1 to 8, wherein a sealing plug (23) is arranged on an inner side of the flip-top (2).

11. The easy-to-use pull-open type cover assembly according to claim 10, an inclined evasion surface (231) is arranged on one side of the sealing plug (23) corresponding to the opening plate (21), and / or a guiding portion (232) is arranged on one side of the sealing plug (23) away from the opening plate (21).

12. The easy-to-use pull-open type cover assembly according to claim 1, wherein the flip-top (2) is connected to the cover base (1) through a breakable or tearable connecting tear line (4) with an opening, and the connecting member (11) is formed at an opening part of the connecting tear line (4).

13. The easy-to-use pull-open type cover assembly according to claim 12, wherein two pairs of axial tearing portions (41) are arranged at the opening part of the connecting tear line (4), and the connecting member (11) is formed after the tearing portions (41) break.

14. The easy-to-use pull-open type cover assembly according to claim 13, wherein a breaking portion (42) is arranged between the cover base (1) and the flip-top (2) between the two connecting members (11).

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