Commodity anti-theft label suitable for self-sealing bag packaging
By designing anti-theft tags on self-sealing bags and utilizing the cooperation of pressure plates and moving parts, combined with Hall effect switches and line break alarm switches, the problem of anti-theft of self-sealing bags has been solved, achieving a simple and effective anti-theft function.
Patent Information
- Application Number
- CN202520062608.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-10
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-01-10
AI Technical Summary
Existing self-sealing bag packaging faces difficulties in terms of anti-theft measures, making it difficult to effectively prevent unauthorized opening and theft.
An anti-theft tag comprising a circuit board, acousto-magnetic components, and RFID components was designed. Through the cooperation of a pressure plate and a movable part, it secures the self-sealing bag and is equipped with a Hall switch and a line break alarm switch, providing multiple anti-theft functions.
It effectively prevents self-sealing bags from being illegally opened and leaving obvious signs of theft. It has multiple anti-theft functions, is easy to use, and does not require modification of the existing self-sealing bag structure.
Smart Images

Figure CN223867809U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an anti-theft device, specifically an anti-theft label suitable for self-sealing bag packaging. Background Technology
[0002] Self-sealing bags are a widely used product packaging tool; however, it has been found in shopping malls that some people have opened the zippers of self-sealing bags privately, stolen some of the goods inside the bags, and then closed the zippers again, causing losses to the business operators.
[0003] To address this, CN205854946 U discloses a reusable flexible packaging container with an anti-theft mechanism, comprising a flexible packaging container body, wherein the upper inner sidewall of the flexible packaging container body is provided with a reusable sealing mechanism; the anti-theft mechanism is provided on the sidewall of the flexible packaging container body, and the anti-theft mechanism is located above the reusable sealing mechanism; the anti-theft mechanism includes a gripping piece for easy gripping and a sidewall tearing piece that can tear an opening in the sidewall of the flexible packaging container body, the gripping piece being connected to the sidewall tearing piece. Its advantages are that the opening position is precise, without damaging the sidewalls above or below the opening, allowing the flexible packaging container body to maintain its original shape, making it very convenient to use and effectively preventing damage to the flexible packaging container body due to improper operation.
[0004] However, this packaging container needs to have a reusable sealing mechanism on the flexible packaging container body, which requires modification of the flexible packaging container structure; this is difficult to achieve for many products that have already adopted self-sealing bag packaging.
[0005] Therefore, there is an urgent need to design an anti-theft label suitable for self-sealing bag packaging. Utility Model Content
[0006] The purpose of this utility model is to overcome the shortcomings in the above-mentioned background technology and provide an anti-theft label for goods packaged in self-sealing bags. This anti-theft label should be effective in preventing theft of goods packaged in self-sealing bags and should be easy to use and have a wide range of applications.
[0007] The technical solution of this utility model is:
[0008] An anti-theft tag for self-sealing bag packaging includes a circuit board, an acousto-magnetic component, and an RFID component; characterized in that: the anti-theft tag further includes a main body with an open top and a through groove, a top cover pivotally positioned on the top of the main body to cover the open top, a lock cylinder mounted on the main body and locked in cooperation with the top cover, and a pressure plate movably positioned in the through groove and cooperating with the top cover to press the self-sealing bag containing the goods against the through groove; the circuit board, acousto-magnetic component, and RFID component are installed in the main body.
[0009] The through-slot is horizontally positioned in the middle of the main body and extends through the right side and both front and rear sides of the main body to facilitate the insertion and fixation of the self-sealing bag.
[0010] The top cover is hinged to the main body by a pin horizontally set on the right side of the top of the main body. The pressure plate is located below the pin and moves towards the through groove when it abuts against the top cover.
[0011] The lock cylinder is located on the top left side of the main body, and the lock cylinder steel column in the lock cylinder extends towards the opening, so as to lock with the upper cover when the upper cover is closed.
[0012] A movable component is movably positioned at the right end of the lower side wall of the channel. This movable component is correspondingly located below the pressure plate, thereby cooperating with the pressure plate to fix the self-sealing bag.
[0013] A wire breakage alarm switch is provided on the lower side of the movable component.
[0014] The beneficial effects of this utility model are:
[0015] 1. This utility model, through the cooperation of the pressing block and the movable block, fixes the self-sealing bag, making it difficult for malicious individuals to open the zipper to take out the goods in the bag; if the bag is damaged, clear traces of theft will be left; thus, it has a powerful deterrent effect on malicious individuals.
[0016] 2. This utility model is equipped with essential components for anti-theft tags, such as circuit boards, acousto-magnetic components, and RFID components, and has multiple functions of conventional anti-theft devices.
[0017] 3. This utility model is simple and convenient to use. It can be used with existing self-sealing bags for packaging goods without any modification. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the main structure of an embodiment of this utility model (in use).
[0019] Figure 2 This is a schematic diagram of the main structure of an embodiment of this utility model (in a non-use state).
[0020] Figure 3 This is an exploded view of an embodiment of the present invention.
[0021] Figure 4 This is a perspective view of the connection state between the present invention and the self-sealing bag during use in an embodiment of the present invention.
[0022] Figure 5 This is a perspective view of the unlocked state when this utility model is in use.
[0023] Figure label:
[0024] 1. Top cover, 1-1. Guide slope, 2. Magnetic rod, 3. Coil cover, 5. Pin, 6. Pressure plate, 7. Reset spring, 8-1. RFID cover, 8. RFID element, 9. Lock cylinder cover, 10. Lock cylinder spring, 11. Lock cylinder steel column, 12. Main body, 12-1. Through groove, 13. Moving part, 14. Circuit board, 14-1. Wire break alarm switch, 14-2. Hall switch, 14-3. Acoustomagnetic element, 15. Battery, 16. Bottom shell, 17. Self-sealing bag, 17-1. Lock bar, 18. Magnetic unlocking device, 18-1. Unlocking area. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments shown in the accompanying drawings.
[0026] like Figure 1 The anti-theft label for self-sealing bag packaging shown has an open top and a through groove 12-1. A pin 5 is horizontally provided at the right end of the open top. The top cover 1 is pivotally hinged to the main body through the pin, and the top cover completely closes the open end after pivoting and closing.
[0027] The lock cylinder is located on the top left side and includes a lock case mounted on the main body, a lock cylinder steel post 11 horizontally movable within the lock case, a lock cylinder spring 10 located within the lock case and extending to the right of the lock cylinder steel post, and a lock cylinder cover 9 connected to the lock case to seal the lock cylinder spring. The lock head at the top of the lock post also protrudes through a small hole in the lock case into the opening. The top cover has a corresponding mating hole at its left end, allowing it to lock into the lock head at the top of the lock post when closed.
[0028] Furthermore, a guide slope 1-1 is formed on the lower left side of the upper cover, so that when the upper cover is closed, the lock head of the lock pin can be pushed back against the pressure of the lock core spring, thereby realizing the locking engagement between the lock head and the mating hole.
[0029] The through groove is horizontally positioned in the middle of the main body and extends through the right side and both front and rear sides of the main body, giving the main body a U-shaped structure.
[0030] The pressure plate 6 is movably positioned below the pin. The top of the pressure plate abuts against the top cover. The middle and lower parts of the pressure plate pass through the opening of the upper side wall of the through groove and then extend downward into the through groove. This allows it to be pressed into the through groove when the top cover is closed, thus pressing against the packaging bag (usually a self-sealing bag) containing the goods in the through groove. The front and rear edges of the top of the pressure plate also extend into the opening at the top of the main body in the front and rear directions, and each of them cooperates with a return spring 7 (the upper and lower ends of each return spring apply force to the edge of the pressure plate and the back of the upper side wall of the through groove, respectively), thereby obtaining the potential energy for upward movement. When the top cover is opened, the pressure plate automatically rises and resets.
[0031] The movable part 13 is correspondingly disposed below the pressure plate and is movably positioned in the inlet at the right end of the lower side wall of the through groove; the disc-shaped movable part has its disc edge protruding outwards and larger than the inlet, so the movable part is confined in the inlet, and its main body can pass through the inlet and protrude from the through groove; thus, it can cooperate with the pressure plate during operation to jointly press and limit the packaging bag.
[0032] Furthermore, the bottom end of the pressure plate and the top end of the movable part are respectively provided with regularly arranged protrusions and grooves, and the protrusions and grooves at the bottom end of the pressure plate correspond and cooperate with the grooves and protrusions at the top end of the movable part, thereby effectively enhancing the static friction force when applying pressure to the self-sealing bag containing the goods, ensuring that the self-sealing bag cannot detach from the pressure plate and the movable part (if the self-sealing bag is torn, an alarm signal will be issued, which can be easily detected by the store salesperson).
[0033] Naturally, as an anti-theft tag, a circuit board 14 is installed in the main body (as shown in the figure, the circuit board is installed below the groove wall on the lower side of the main body). The circuit board 14 is equipped with a Hall switch 14-2 and a line break alarm switch 14-1 that are electrically connected to the circuit board circuit. The line break alarm switch is located on the lower side of the moving part and is covered by the disc-shaped periphery of the moving part.
[0034] The main body is also equipped with an acousto-magnetic element 14-3 and an RFID element 8; this is similar to existing technology and does not require further details.
[0035] I. The working principle of this utility model (label) is as follows:
[0036] 1. The Hall switch is not working under normal circumstances. It will start when the wire break alarm switch is turned off. If the Hall switch senses the magnetic unlocking device within 2 seconds after it is activated, the alarm will not be triggered. Otherwise, it will issue an alarm signal.
[0037] 2. The tag starts working after the wire break alarm switch is closed; if the wire break alarm switch is opened, the tag will emit an alarm signal 2 seconds later; if the Hall switch senses the magnetic unlocking device within 2 seconds of the wire break alarm switch being opened, the tag will not emit an alarm signal.
[0038] 3. When the label leaves the factory, the wire breakage alarm switch is in the open (not closed) state.
[0039] II. How to use this utility model:
[0040] 1. First, insert the open end of the self-sealing bag containing the goods into the through slot, ensuring that the opening and the zipper 17-1 next to the opening both pass over the pressure plate and the movable block, moving to the middle of the through slot (e.g., Figure 4 As shown: the zipper is located between the opening and the pressure plate.
[0041] 2. Next, rotate the top cover counterclockwise to engage it with the lock cylinder steel column. The pressure plate moves down and cooperates with the movable block to lock the self-sealing bag. The label will make a "beep" sound, the indicator light will flash once, and then flash once within the next 25 seconds to complete the locking.
[0042] 3. To unlock, align the unlocking area 18-1 of the magnetic unlocker 18 with the unlocking area of the label (i.e., the lock cylinder cover 9). The lock cylinder will open, the top cover will automatically open clockwise, and the pressure plate will move up and detach from the self-sealing bag, thus completing the unlocking process. Figure 5 (As shown).
[0043] III. Alarm Methods:
[0044] (1) When the tag approaches the antenna of the shopping mall and enters the sensing area, the tag itself will emit an alarm signal;
[0045] (2) When the antenna senses the signal from the tag, it will emit an alarm signal;
[0046] (3) The label has a line breakage alarm function, that is, if the self-sealing bag is forcibly pulled out while the label is locked, the label will also issue an alarm signal;
[0047] (4) If a thief removes the self-sealing bag by breaking the lock cylinder, the label will also send out an alarm signal.
Claims
1. A product anti-theft tag suitable for self-sealing bag packaging, comprising a circuit board (14), an acousto-magnetic element (14-3), and an RFID element (8); characterized in that: The anti-theft tag also includes a main body (12) with an open top and a through groove (12-1), a top cover (1) that is pivotally positioned on the top of the main body to cover the open top, a lock cylinder that is mounted on the main body and can be locked in place with the top cover, and a pressure plate (6) that is movably positioned in the through groove and cooperates with the top cover to press a self-sealing bag containing goods against the through groove; the circuit board, acousto-magnetic components and RFID components are installed in the main body; A movable component (13) is movably positioned at the right end of the lower side wall of the channel. The movable component is correspondingly located below the pressure plate, thereby cooperating with the pressure plate to fix the self-sealing bag.
2. The anti-theft label for self-sealing bag packaging according to claim 1, characterized in that: The through-slot is horizontally positioned in the middle of the main body and extends through the right side and both front and rear sides of the main body to facilitate the insertion and fixation of the self-sealing bag.
3. The anti-theft label for self-sealing bag packaging according to claim 2, characterized in that: The top cover is hinged to the main body by a pin (5) horizontally set on the right side of the top of the main body. The pressure plate is located below the pin and moves towards the through groove when it abuts against the top cover.
4. The anti-theft label for self-sealing bag packaging according to claim 3, characterized in that: The lock cylinder is located on the top left side of the main body, and the lock cylinder steel column (11) in the lock cylinder extends towards the opening, so as to lock with the upper cover when the upper cover is closed.
5. The anti-theft label for self-sealing bag packaging according to claim 4, characterized in that: A wire breakage alarm switch (14-1) is provided on the lower side of the movable part.