Tamper-evident sealing structure for packaging container

Abstract

Disclosed in the present invention is a tamper-evident sealing structure for a packaging container, the tamper-evident sealing structure comprising a sealing cap and a spout body. The inner periphery of an tamper-evident hole is provided with tamper-evident working positions at circumferential intervals; a tear strip is provided within each tamper-evident working position, the tear strip being provided with a braking protruding block. The outer periphery of a spout tube is inwardly provided with a clearance portion at a position facing the tamper-evident hole, the clearance portion being provided with a pawl. When the sealing cap is rotated, the braking protruding block abuts against the pawl, such that the tip of the pawl cooperates with rotational motion of the sealing cap to separate one end of each tear strip from the tamper-evident working position. In the present invention, by arranging the tear strips at the bottom of the sealing cap, the overall size of the sealing cap is reduced; and by arranging the clearance portion such that the pawl is positioned closer to the outer diameter of the spout tube, the inner diameter of the tamper-evident hole of the sealing cap is only slightly larger than the outer diameter of the spout tube, thereby greatly reducing the diameter of the sealing cap.

Description

An anti-theft sealing structure for packaging containers Technical Field

[0001] This invention relates to the technical field of sealing devices for container filling tubes, and particularly to an anti-theft sealing structure for packaging containers. Background Technology

[0002] Tamper-evident bottle caps are a common form of packaging for bottles, widely used in daily life. Their sealing and tamper-evident features ensure the safety of the food inside the bottle. Consumers can check the tamper-evident structure of the cap from the outside to see if it has been damaged, thus determining whether the cap has been opened.

[0003] For example, Chinese Patent Publication No. "CN205076215U" describes a safety sealing cover, which includes a sealing cover body and multiple anti-swallowing components. Each anti-swallowing component is connected to the sealing cover body and is distributed sequentially along the circumference of the sealing cover body. A slot is provided between any two adjacent anti-swallowing components. The feature is that at least one strength reinforcement is provided between the two side walls of each slot.

[0004] While it solves the problem of accidental ingestion by children, the safety ring uses a method of locking with small plastic protrusions, which requires direct pressure installation when the cap is closed. This can easily lead to damage to the cap and defective products. It may also cause the safety ring to break prematurely due to inaccurate positioning. In the above-mentioned prior art, the splicable sealing cap body is set outside the safety ring, resulting in a larger overall size and greater consumption of raw materials during production. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an anti-theft sealing structure for packaging containers.

[0006] To achieve the above objectives, the present invention discloses an anti-theft sealing structure for packaging containers, comprising a sealing cap and a nozzle body. The bottom of the sealing cap is provided with an anti-theft hole, and the bottom of the anti-theft hole is provided with a connecting hole. The inner circumference of the anti-theft hole is provided with anti-theft working positions at intervals. A tear piece is provided in the anti-theft working position. A braking protrusion is provided on the tear piece. The rear end of the braking protrusion is fixedly disposed on the inner wall of the tear piece, and the front end of the braking protrusion extends toward the sealing cap.

[0007] The nozzle body includes a straw and a flange. The flange is integrally formed on the outer periphery of the straw for connection with the packaging container. The outer periphery of the straw is provided with a threaded portion for connection with the connecting hole.

[0008] The straw is provided with an inwardly recessed clearance portion on its outer periphery opposite to the anti-theft hole. A pawl is provided on the clearance portion. Rotating the sealing cover causes the braking protrusion to abut against the pawl. The tip of the pawl, in conjunction with the rotation of the sealing cover, causes one end of the tear strip to separate from the anti-theft working position.

[0009] Furthermore, the pawl is elastically disposed on the avoidance part, and the tail end of the pawl is connected to the surface of the avoidance part by a protrusion.

[0010] Furthermore, the tip of the pawl is positioned in the tightening direction of the sealing cap.

[0011] Furthermore, the first and last ends of the tear piece are respectively connected to both sides within the anti-theft working position.

[0012] One end of the tear strip along the opening direction of the sealing cover is connected to the inner wall of the anti-theft working position by a breakable strip.

[0013] Furthermore, the inner circumference of the connecting hole is provided with a threaded portion.

[0014] Furthermore, the inner circumference of the anti-theft hole is provided with a clearance recess, which is located between two adjacent anti-theft working positions.

[0015] Furthermore, the anti-theft work station has guide sections on both sides.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. By setting a clearance part, the position of the pawl is closer to the outer diameter of the straw, and the inner diameter of the anti-theft hole of the corresponding sealing cap is only slightly larger than the outer diameter of the straw, which greatly reduces its diameter.

[0018] 2. By dividing the safety ring into several segments and placing them between the sealing cap body, the diameter of the sealing cap body is greatly reduced, thus significantly reducing the volume of the sealing cap body and saving a lot of materials. Attached Figure Description

[0019] Figure 1 is a front view of the overall structure of this embodiment 1;

[0020] Figure 2 is a bottom view of the sealing cap in Embodiment 1;

[0021] Figure 3 is a three-dimensional schematic diagram of the nozzle body in Embodiment 1;

[0022] Figure 4 is a magnified view of part A in Figure 3;

[0023] Figure 5 is a three-dimensional schematic diagram of the sealing cap in Embodiment 2. Detailed Implementation

[0024] To make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail below with reference to the accompanying drawings of Figures 1-4.

[0025] Example 1: Referring to Figure 1, an anti-theft sealing structure for a packaging container includes a sealing cap 1 and a suction nozzle body 2. The suction nozzle body 2 includes a straw and a flange. The flange is integrally formed on the outer periphery of the straw for connection with the packaging container. The outer periphery of the straw is provided with a threaded portion for connection with the sealing cap 1.

[0026] Referring to Figure 2, the bottom of the sealing cover 1 is provided with an anti-theft hole 3, and the bottom of the anti-theft hole 3 is provided with a connecting hole 4. The inner circumference of the connecting hole 4 is provided with a threaded part, and the connecting hole 4 is threadedly connected to the nozzle body 2 through the threaded part.

[0027] The inner circumference of the anti-theft hole 3 is provided with a plurality of anti-theft working positions 31, which are in communication with the bottom and outer circumference of the sealing cover 1. In this embodiment, the number of anti-theft working positions 31 is three, but this embodiment does not limit the number of anti-theft working positions 31.

[0028] Furthermore, a tear strip 311 is provided inside the anti-theft working position 31. In this embodiment, the outer contour of the tear strip 311 is arc-shaped. The first and last ends of the tear strip 311 are respectively connected to the two sides inside the anti-theft working position 31.

[0029] Several torn pieces 311 form a safety ring.

[0030] Furthermore, the tear strip 311 is connected to the inner wall of the anti-theft working position 31 by a breakable strip 312 at one end along the opening direction of the sealing cover 1.

[0031] The tear strip 311 is provided with a braking protrusion 313. The rear end of the braking protrusion 313 is fixedly disposed on the inner wall of the tear strip 311, and the front end of the braking protrusion 313 extends toward the sealing cover 1 and is adjacent to the easily broken strip 312.

[0032] The inner circumference of the anti-theft hole 3 is provided with a relief recess 32, which is located between two adjacent anti-theft working positions 31. Guide portions 314 are respectively provided on both sides of the anti-theft working position 31, and the two guide portions 314 are arranged in a V-shape. There is an arc transition between the guide portions 314 and the relief recess 32.

[0033] Referring to Figure 3, a clearance portion 21 is provided inward on the lower half of the outer periphery of the suction nozzle body 2. A pawl 22 is provided on the clearance portion 21, and the tip of the pawl 22 is positioned in the tightening direction of the sealing cap 1, serving as the front end of the pawl. When the sealing cap 1 is threaded onto the suction nozzle body 2, the pawl 22 is positioned within the clearance recess 32.

[0034] In this embodiment, the shape of the recess 32 is the arc shape corresponding to the pawl 22, which is beneficial for the sealing cover 1 to rotate along the pawl 22.

[0035] Furthermore, as shown in Figure 4, the pawl 22 is elastically disposed on the clearance portion 21. Specifically, the inner sidewall of the tail end of the pawl 22 is connected to the surface of the clearance portion 21 by a protrusion to achieve elastic deformation of the pawl 22.

[0036] During operation, rotating the sealing cover 1 counterclockwise compresses the pawl 22 inward. The rotation of the sealing cover 1 changes the relative position of the brake protrusion 313 and the pawl 22 until the tip of the pawl 22 abuts against the brake protrusion 313. Continuing to rotate the sealing cover 1 counterclockwise causes the easily broken strip 312 to break under the action of the pawl 22. At this time, one end of the tear strip 311 separates from one side of the anti-theft working position 31, indicating that the connection between the sealing cover 1 and the cover body is broken. The user can directly observe the connection status of the tear strip 311 from the anti-theft working position 31.

[0037] Compared to the traditional method where the pawl is located on the outside of the straw, and the inner diameter of the corresponding sealing cap's safety ring is significantly larger than the straw's outer diameter, this embodiment uses a relief part to move the pawl position inward, so that the inner diameter of the anti-theft hole on the corresponding sealing cap is only slightly larger than the straw's outer diameter, greatly reducing its diameter.

[0038] Traditionally, the modular sealing cap body is located outside the safety ring, resulting in a large size. This embodiment changes the way the safety ring and the sealing cap body are independent structures, dividing the safety ring into several segments and placing them between the sealing cap body, which greatly reduces the diameter of the sealing cap body and significantly reduces its volume, saving a lot of materials and reducing production costs.

[0039] Example 2:

[0040] The connection structure and anti-theft structure of the sealing cap and nozzle body in this embodiment are the same as those in embodiment 1, except that:

[0041] Referring to Figures 2 and 5, the outer periphery of the sealing cover 1 is provided with a plurality of slots 5, which are spaced apart circumferentially. The two ends of the slots 5 are connected to the top and bottom of the sealing cover 1. The slots 5 are positioned to correspond to the anti-theft working position 31, making it convenient for the user to observe the state of the tear strip 311.

[0042] In this embodiment, there are three slots 5. However, this embodiment does not limit the number of slots 5.

[0043] The outer periphery of the sealing cover 1 is provided with a plug-in protrusion 6, and the outer contour of the plug-in protrusion 6 corresponds to the shape of the slot 5.

[0044] In use, the protruding part 6 of one sealing cover 1 is inserted into the slot 5 of another sealing cover 1 to achieve the assembly function.

[0045] The top of the sealing cover 1 is provided with a plurality of first insertion holes 7, which are arranged in a circular array with the center of the sealing cover 1 as the center. In this embodiment, the number of first insertion holes 7 is 6.

[0046] The bottom of the sealing cover 1 is provided with a plurality of second insertion holes 8, which are arranged in a circular array with the center of the sealing cover 1 as the center.

[0047] The bottom of the sealing cover 1 is also provided with several plug-in protrusions 9, which are arranged in a circular array with the center of the sealing cover 1 as the center.

[0048] In use, the insertion protrusion 9 of one sealing cover 1 is inserted into the first insertion hole 7 or the second insertion hole 8 of another sealing cover 1 to realize the assembly and splicing function of the two sealing covers 1.

[0049] In this embodiment, the sealing cap has an assembly function, which greatly increases the value of the sealing cap. The sealing cap will not be discarded casually because the nozzle body loses its value, reducing environmental damage, increasing value and adding fun.

[0050] Of course, the above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They cannot be used to limit the scope of protection of the present invention. All modifications made according to the spirit of the main technical solution of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An anti-theft sealing structure for packaging containers, characterized in that, The device includes a sealing cap (1) and a suction nozzle body (2). The bottom of the sealing cap (1) is provided with an anti-theft hole (3) facing inward. The bottom of the anti-theft hole (3) is provided with a connecting hole (4). The inner circumference of the anti-theft hole (3) is provided with anti-theft working positions (31) spaced apart. The anti-theft working position (31) is provided with a tear piece (311). The tear piece (311) is provided with a braking protrusion (313). The front end of the braking protrusion (313) extends toward the sealing cap (1). The nozzle body (2) includes a straw and a flange. The flange is integrally formed on the outer periphery of the straw and is used to connect with the packaging container. The outer periphery of the straw is provided with a threaded part for connecting with the connecting hole (4). The straw is provided with an inwardly extending clearance part (21) on its outer periphery opposite to the anti-theft hole (3). A pawl (22) is provided on the clearance part (21). Rotating the sealing cover (1) causes the front end of the brake protrusion (313) to engage with the tip of the pawl (22). The rotation of the sealing cover (1) causes one end of the tear piece (311) to separate from the anti-theft working position (31). The pawl (22) is elastically disposed on the clearance part (21); The first and last ends of the tear piece (311) are respectively connected to the two sides inside the anti-theft working position (31).

2. The anti-theft sealing structure for packaging containers according to claim 1, characterized in that, The tail end of the pawl (22) is connected to the surface of the avoidance part (21) by a protrusion.

3. The anti-theft sealing structure for packaging containers according to claim 1 or 2, characterized in that, The tip of the pawl (22) is positioned in the tightening direction of the sealing cap (1).

4. The anti-theft sealing structure for packaging containers according to claim 1, characterized in that, The tear strip (311) is connected to the inner wall of the anti-theft working position (31) by a breakable strip (312) at one end along the opening direction of the sealing cover (1).

5. The anti-theft sealing structure for packaging containers according to claim 1, characterized in that, The inner circumference of the connecting hole (4) is provided with a threaded portion.

6. The anti-theft sealing structure for packaging containers according to claim 1, characterized in that, The inner circumference of the anti-theft hole (3) is provided with a relief recess (32), which is located between two adjacent anti-theft working positions (31).

7. The anti-theft sealing structure for packaging containers according to claim 6, characterized in that, Guide sections (314) are provided on both sides of the anti-theft work station (31).

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