Double-layer anti-theft connecting belt cover with short straw

The double-layer anti-theft connection with the cap solves the problems of easy separation and space occupation of the single-layer anti-theft cap, achieving a stable connection and convenient use of the stand-up pouch spout.

CN224278238UActive Publication Date: 2026-05-26SHANTOU RUIHUA PLASTIC CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANTOU RUIHUA PLASTIC CO LTD
Filing Date
2025-05-27
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing single-layer anti-theft ring type anti-theft caps are prone to separation between the cap body and the anti-theft ring during the use of stand-up pouch nozzles, posing a risk of loss. In addition, the connection structure occupies a lot of space in the height direction, affecting the convenience of use and visual effect.

Method used

The cover adopts a double-layer anti-theft connecting strip, including an upper collar and a lower collar. Through the staggered arrangement of the upper and lower connecting strips and the upper and lower connecting parts, a stable part and a deformable part are formed, avoiding visual abruptness and reducing the length of the connecting parts, ensuring a stable connection between the cover body and the lower collar.

Benefits of technology

It effectively prevents the cover from being lost, improves the overall stability and ease of use of the anti-theft cover, reduces the space occupied by the connecting structure on the stop part, and improves the visual effect.

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Abstract

A double-layer anti-theft connecting cap adapted for short straws includes an upper loop and a lower loop. The upper loop is an open loop with separate ends, while the lower loop is a complete loop. At least one pair of beveled hooks are provided on opposite sides of the inner edge of the lower loop. The lower edge of the cap body and the upper edge of the upper loop are connected vertically by several upper connecting strips and an upper connecting part. The lower edge of the upper loop and the upper edge of the lower loop are connected vertically by several lower connecting strips and a lower connecting part. The upper connecting part is located at the beginning of the upper loop, and the lower connecting part is located at the end of the upper loop. The upper and lower connecting parts are arranged perpendicularly and staggered, and the width of both the upper and lower connecting parts is not less than the thickness of the lower loop. At least one beveled hook is located on the lower side of either the upper or lower connecting part. When opened, the upper loop can form a longer connecting piece between the cap body and the lower loop, avoiding excessive space occupied by the double-layer anti-theft ring at the stop part and effectively reducing the visual obtrusiveness and inconvenience caused by the connection.
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Description

Technical Field

[0001] This utility model relates to the field of bottle caps, specifically to a double-layer anti-theft connecting cap adapted to a short straw. Background Technology

[0002] The applicant's prior patent application, number ZL201910184142.0, entitled "A Filling Bag Nozzle," not only satisfies the need for effective guiding transportation but also can be used with a single-layer anti-theft ring-type anti-theft cap. In addition to serving as a reusable nozzle for stand-up pouches, it enhances the security of product packaging, prevents unauthorized opening, and improves portability and resealing functionality, making it convenient for consumers to use multiple times.

[0003] The applicant's market research revealed that, among some younger consumers, existing single-layer tamper-evident ring caps tend to detach from the cap body after the stand-up pouch spout is opened, posing a risk of loss. Therefore, a new type of stand-up pouch spout uses a folded connecting strip on the side wall to connect the tamper-evident ring and the cap body. The cap body can be opened by unscrewing it. However, using a longer folded connecting strip is visually obtrusive due to its location on the side wall, while shortening it makes it inconvenient for consumers to touch their cheeks or noses while using the spout. Furthermore, the connection structure between the cap body and the tamper-evident ring is located at the stop of the stand-up pouch spout, and this area is relatively short in the vertical direction, presenting a significant technical challenge in designing a suitable connection structure. Summary of the Invention

[0004] The purpose of this invention is to provide a double-layer anti-theft connecting cap that is compatible with short straws. It can be used with existing stand-up pouch nozzles. While maintaining the overall structural stability of the anti-theft cap and ensuring smooth opening and closing, the upper collar can form a longer connecting piece to the cap body and the lower collar after the cap body is opened. This avoids the double-layer anti-theft ring occupying too much space in the stop part in the height direction, and can effectively reduce the defects of visual abruptness and inconvenience caused by the connection part.

[0005] To achieve the above objectives, this utility model employs the following technical means:

[0006] A double-layer anti-theft connecting cap for use with short straws includes a cap body with a spiral pattern and an anti-theft ring. The cap body and the anti-theft ring are connected vertically. The anti-theft ring includes an upper loop and a lower loop. The upper loop is an open ring with its ends separated, and the lower loop is a complete ring. At least one pair of beveled hooks are provided on opposite sides of the inner edge of the lower loop. The lower edge of the cap body and the upper edge of the upper loop are connected vertically by several upper connecting strips and an upper connecting part. The lower edge of the upper loop and the upper edge of the lower loop are connected vertically by several lower connecting strips and a lower connecting part. The upper connecting part is located at the beginning of the upper loop, and the lower connecting part is located at the end of the upper loop. The upper connecting part and the lower connecting part are arranged vertically and staggered relative to each other. The width of the upper connecting part and the lower connecting part is not less than the thickness of the lower loop. At least one beveled hook is provided on the lower side of the upper connecting part or the lower connecting part.

[0007] Furthermore, the number of lower connecting strips is 3-8, the number of upper connecting strips is 3-8, the upper connecting strips and the upper connecting part are arranged in a circular arrangement on the upper layer, and the lower connecting strips and the lower connecting part are arranged in a circular arrangement on the lower layer.

[0008] Furthermore, the upper connecting bands, the lower connecting bands, and the hooks on the inclined surfaces are all arranged in a non-uniform circular pattern.

[0009] Furthermore, the upper connecting strip and the lower connecting strip are arranged perpendicularly and horizontally to each other.

[0010] Furthermore, the upper connecting part is located at the first end of the upper collar, and the lower connecting part is located at the last end of the upper collar.

[0011] Furthermore, the upper collar's first and last ends are also provided with horizontal connecting strips.

[0012] Furthermore, the diameter of the lower collar is not less than that of the upper collar, and in the vertical projection direction, the distance between the outer edge of the lower collar and the outer edge of the upper collar is more than half of the thickness of the side wall of the upper collar and does not exceed the thickness of the side wall of the upper collar, and the maximum width of the upper connecting strip and the lower connecting strip does not exceed one-third of the thickness of the side wall of the upper collar.

[0013] Furthermore, the thickness difference between the upper and lower collars does not exceed one time.

[0014] This utility model has at least the following advantages:

[0015] By modifying the upper loop of the anti-theft ring into an open loop structure and the lower loop into a complete loop structure, and by combining the upper and lower connecting strips and the upper and lower connecting parts, the visually abrupt effect of the anti-theft cover protruding to the side is avoided. When the cover body is opened, the upper and lower connecting strips are separated from the cover body, the upper loop, and the lower loop, and the upper loop connects the cover body and the lower loop end by end. In addition, the upper loop surrounding the stand-up pouch nozzle can form a longer connecting piece to the cover body and the lower loop, which not only prevents the cover body from being lost, but also reduces the inconvenience caused by the short length of the connecting piece.

[0016] By setting up a double-layer anti-theft ring as an anti-theft structure, while maintaining basic anti-theft performance, its reasonable design of the connecting strip and connecting part structure allows the anti-theft cap to form a stable part using the high-strength and staggered upper and lower connecting parts when installed on the stand-up pouch nozzle. The remaining upper and lower loop parts form deformable parts with a certain degree of elasticity and extensibility. This ensures that the overall stability of the anti-theft ring structure is maintained when the anti-theft cap is screwed into the stand-up pouch nozzle, preventing the upper and lower connecting strips from accidentally breaking when mechanical equipment is used to install the anti-theft cap and stand-up pouch nozzle.

[0017] The inclined hook provided on the lower side of the upper or lower connecting part can, based on the above-mentioned structural stabilization part, enable the barb of the inclined hook to more effectively engage with the vertical wall of the stop part when the cover body is unscrewed. This allows the upper and lower connecting strips to be fully separated when the cover body is opened, reducing the drawback of slippage and free rotation between the barb and the vertical wall of the stop part, which would otherwise lead to poor separation of the upper and lower connecting strips. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the bottom of the anti-theft cover of this utility model;

[0019] Figure 2 This is a top view schematic diagram of the anti-theft cover of this utility model;

[0020] Figure 3 This is a schematic diagram of the nozzle part of this utility model;

[0021] Figure 4 This is a schematic diagram of the unused state of this utility model;

[0022] Figure 5 This is a schematic diagram showing the activated state of this utility model with the upper and lower connecting strips concealed. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0024] like Figure 1-5 As shown, a double-layer anti-theft connecting cap adapted for short straws includes a cap body 10 with a spiral pattern and an anti-theft ring. The cap body 10 and the anti-theft ring are connected vertically. The anti-theft ring includes an upper loop 11 and a lower loop 12. The upper loop 11 is an open loop with separate ends, and the lower loop 12 is a complete loop. Three pairs of beveled hooks 123 are provided on opposite sides of the inner edge of the lower loop 12. The lower edge of the cap body 10 and the upper edge of the upper loop 11 are connected by six upper connecting strips 112 and an upper connecting part 111. The upper and lower rings are connected by six lower connecting strips 122 and one lower connecting part 121. The upper connecting part 111 is located at the beginning of the upper ring 11, and the lower connecting part 121 is located at the end of the upper ring 11. The upper connecting part 111 and the lower connecting part 121 are arranged perpendicularly and staggered to each other. The width of the upper connecting part 111 and the lower connecting part 121 is not less than the thickness of the lower ring 12. A sloping hook part 123 is provided on the lower side of the lower connecting part 121.

[0025] By modifying the anti-theft ring into a double-layer structure with an open upper ring 11 and a complete lower ring 12, and in conjunction with the upper connecting strip 112, the lower connecting strip 122, the upper connecting part 111, and the lower connecting part 121, the visually abrupt effect of the anti-theft cover protruding to the side is avoided. When the cover body 10 is opened, the upper connecting strip 112 and the lower connecting strip 122 are separated from the cover body 10, the upper ring 11, and the lower ring 12. The upper ring 11 connects the cover body 10 and the lower ring 12 end to end. The upper ring 11 surrounding the stand-up pouch nozzle 2 can form a longer connecting piece to the cover body 10 and the lower ring 12. This not only prevents the cover body 10 from being lost, but also reduces the inconvenience caused by the short length of the connecting piece.

[0026] like Figure 4The diagram shows a structure in which the upper connecting part 111 and the lower connecting part 121 are arranged vertically and staggered relative to each other, with the width of both the upper connecting part 111 and the lower connecting part 121 being approximately twice the thickness of the lower collar 12. Based on this structure, the upper connecting part 111 and the lower connecting part 121 can form a structurally stable part with high structural strength, while the remaining upper collar 11 and lower collar 12 parts can form deformable parts with a certain degree of elasticity. Therefore, when the anti-theft cover and the stand-up pouch nozzle 2 are installed on the mechanical equipment, after the inclined sides of each inclined hook part 123 press against the wall 21 of the stop part, causing the lower collar 12 to expand outward, both the upper collar 11 and the lower collar 12 can undergo a certain degree of elastic deformation, thus preventing the upper connecting strip 112 and the lower connecting strip 122 from accidentally breaking off. This maintains the overall stability of the anti-theft ring structure when the anti-theft cover is screwed into the stand-up pouch nozzle 2.

[0027] In this embodiment, in addition to the upper connecting strips 112 and the upper connecting portion 111 being arranged in a circular pattern on the upper layer, and the lower connecting strips 122 and the lower connecting portion 121 being arranged in a circular pattern on the lower layer, the upper connecting strips 112 and the lower connecting strips 122 are arranged vertically and horizontally. This design allows the deformable portions of the upper collar 11 and lower collar 12 to exhibit greater unidirectional deformation. Guided by the mutually perpendicular and flush upper connecting strips 112 and 122, the elastic deformation of the upper collar 11 and lower collar 12 tends to occur towards the areas without the upper and lower connecting strips 112 and 122. In this embodiment, the upper connecting strips 112, lower connecting strips 122, and inclined hook portions 123 are arranged in a non-uniform circumferential pattern, which is more suitable for the thicker design of the lower collar 12. This allows the deformable portion to point towards the sparsely arranged upper and lower connecting strips 112 and 122, resulting in high unidirectional deformation. Therefore, the thicker lower collar 12 can deform more smoothly, while preventing accidental breakage of the upper and lower connecting strips 112 and 122.

[0028] To further improve the overall strength of the structural stabilizing part formed by the upper connecting part 111 and the lower connecting part 121, in this embodiment, a horizontal connecting strip is provided at the beginning and end of the upper collar 11, making the upper collar 11 a semi-open ring structure. After the upper connecting part 111 and the lower connecting part 121 are connected by the horizontal connecting strip, a certain limiting vertical offset effect can be provided when the horizontal connecting strip is not broken. While maintaining the overall deformability of the upper collar 11, the overall strength of the structural stabilizing part is enhanced to a certain extent. This can further reduce the slippage and free rotation between the barb and the stop part of the vertical wall 21. Therefore, the width of the inclined hook part 123 in the horizontal direction can be appropriately reduced, thereby reducing the inclination of the inclined surface. With the inclined hook 123 of this design, when the anti-theft cover is rotated and installed to the self-standing bag nozzle 2, the inclined side of each inclined hook 123 presses against the vertical wall 21 of the stop part, thereby reducing the outward expansion of the lower collar 12 and preventing abnormal elastic expansion of the lower collar 12, which could cause abnormal breakage of the weaker lower connecting strip 122. Moreover, when the cover body 10 is rotated in the opposite direction to open, the hook side of each inclined hook 123 can still hook well onto the vertical wall 21 of the stop part.

[0029] In this embodiment, the diameter of the lower collar 12 is not less than that of the upper collar 11, and in the vertical projection direction, the distance X between the outer edge of the lower collar 12 and the outer edge of the upper collar 11 is more than half and does not exceed the thickness Y of the sidewall of the upper collar 11. The maximum width of the upper connecting strip 112 and the lower connecting strip 122 does not exceed one-third of the thickness of the sidewall of the upper collar 11. With this setting, while maintaining the structural stability of the anti-theft ring, the lower collar 12 can have a wider elastic expansion space in the horizontal direction, which is more conducive to its application to thicker lower collars 12.

[0030] As shown in this embodiment, the thickness of the lower collar 12 is twice the thickness of the upper collar 11. This arrangement can provide the lower collar 12 with more sufficient structural stability, and the fixing part between the inclined hook 123 and the lower collar 12 is wider. The inclined hook 123 can be provided with a larger volume, thus bringing a wider contact point, and further avoiding slippage and free rotation between the vertical walls 21 of the stop part; at the same time, it can also effectively reduce the excessive space occupied by the upper collar 11 in the height direction of the stop part.

[0031] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A double-layer anti-theft connecting cap adapted for short straws, comprising a cap body with spiral patterns and an anti-theft ring, wherein the cap body and the anti-theft ring are connected vertically, characterized in that: The anti-theft ring includes an upper ring and a lower ring. The upper ring is an open ring with its ends separated, and the lower ring is a complete ring. At least one pair of inclined hooks are provided on opposite sides of the inner edge of the lower ring. The lower edge of the cover body and the upper edge of the upper ring are connected vertically by several upper connecting strips and an upper connecting part. The lower edge of the upper ring and the upper edge of the lower ring are connected vertically by several lower connecting strips and a lower connecting part. The upper connecting part is located at the beginning of the upper ring, and the lower connecting part is located at the end of the upper ring. The upper connecting part and the lower connecting part are arranged vertically and staggered, and the width of the upper connecting part and the lower connecting part is not less than the thickness of the lower ring. At least one inclined hook is provided on the lower side of the upper connecting part or the lower connecting part.

2. The double-layered anti-theft connecting belt cover with a short pipe according to claim 1, characterized in that: The number of lower connecting strips is 3-8, the number of upper connecting strips is 3-8, the upper connecting strips and the upper connecting part are arranged in a circular arrangement on the upper layer, and the lower connecting strips and the lower connecting part are arranged in a circular arrangement on the lower layer.

3. The double-layer anti-theft connecting cap adapted to a short straw as described in claim 2, characterized in that: The upper connecting bands, the lower connecting bands, and the hooks on the inclined surfaces are all arranged in a non-uniform circular pattern.

4. The double-layered anti-theft connecting belt cover with a short suction pipe as claimed in claim 3, wherein: The upper connecting strip and the lower connecting strip are arranged perpendicularly to each other and flush.

5. The double-layered anti-theft connecting belt cover with a short pipe fitting as claimed in any one of claims 1 to 4, wherein: The upper collar's head end and tail end are also provided with horizontal connecting strips.

6. The double-layered anti-theft connecting belt cover with a short pipe fitting as claimed in any one of claims 1 to 4, wherein: The diameter of the lower collar is not less than that of the upper collar, and in the vertical projection direction, the distance between the outer edge of the lower collar and the outer edge of the upper collar is more than half of the thickness of the side wall of the upper collar and does not exceed the thickness of the side wall of the upper collar. The maximum width of the upper connecting strip and the lower connecting strip does not exceed one-third of the thickness of the side wall of the upper collar.

7. The double-layered anti-theft connecting belt cover with a short pipe fitting as claimed in any one of claims 1 to 4, wherein: The thickness difference between the upper and lower collars does not exceed one.

Citation Information

Patent Citations

  • Filling bag suction nozzle

    CN109760935A