Electronic anti-theft device

Abstract

The embodiment of the utility model provides an electronic anti-theft device. The electronic anti-theft device comprises a main shell, a first locking block, a controller, an electric driving mechanism and a lantern ring piece. The first slot of the main shell and the first locking block are provided with a locking hole and an avoiding hole which are communicated, the controller is provided with a first electric connecting part and a second electric connecting part, the electric driving mechanism is arranged in the inner cavity, the electric driving mechanism is in transmission connection with the first locking block to drive the first locking block to move, and the lantern ring piece is provided with a first terminal piece and a second terminal piece. When the electronic anti-theft label is in an unlocking state, the electric driving mechanism drives the first locking block to move, so that the avoiding hole is located on the straight line where the first inserting groove is located, and when the electronic anti-theft label is in a locking state, the electric driving mechanism drives the first locking block to move, the first terminal piece is locked through the first locking block, and the avoiding hole is located on the straight line where the first terminal piece is located. The first terminal piece is electrically connected with the first electric connection part. According to the electronic anti-theft device, unlocking and locking actions can be automatically controlled and executed through the electric driving mechanism, manual operation is not needed, and use is convenient.

Description

Technical Field

[0001] This application relates to the field of anti-theft equipment technology, specifically to an electronic anti-theft device. Background Technology

[0002] Merchandise theft prevention is a crucial aspect of the operation and warehousing of shopping malls and supermarkets. Especially with the rapid development of society and the economy, there are more and more shopping malls and supermarkets, and their scale is also getting larger. Shopping malls and supermarkets need to consider reducing labor costs and improving customer experience, while also solving the problem of merchandise theft prevention. Anti-theft tags are currently the most widely used anti-theft devices.

[0003] Among related technologies, purely mechanical anti-theft tags are provided. These tags are made using a specific mechanical structure. Locking requires manual operation and sufficient external force. Similarly, unlocking also requires manual operation. This purely mechanical anti-theft tag increases the difficulty of use, increases the workload of staff, and is prone to errors due to manual operation, easily resulting in the anti-theft tag failing to lock successfully. Utility Model Content

[0004] To address one of the aforementioned technical deficiencies, this application provides an electronic anti-theft device to solve the problems of existing anti-theft devices requiring manual operation, being time-consuming and labor-intensive, and having low reliability.

[0005] The present invention adopts the following technical solution:

[0006] An electronic anti-theft device includes:

[0007] A main shell having an inner cavity and a first slot communicating with the inner cavity;

[0008] A first locking block is slidably disposed in the inner cavity. The first locking block has a locking hole and a clearance hole, and the locking hole and the clearance hole are connected.

[0009] A controller is disposed within the inner cavity, and the controller is provided with a first electrical connection part and a second electrical connection part. An alarm device is connected to the controller.

[0010] An electric drive mechanism is disposed within the inner cavity and is connected to the first locking block in a transmission manner to drive the first locking block to move.

[0011] A collar component, wherein a first terminal component and a second terminal component are respectively provided at both ends of the collar component, the first terminal component and the second terminal component are electrically connected, and the second terminal component is connected to the main shell and electrically connected to the second electrical connection part;

[0012] The electronic anti-theft tag has an unlocked state and a locked state. In the unlocked state, the electric drive mechanism drives the first locking block to move, so that the clearance hole is located on the straight line of the first slot, and the first terminal piece can pass through the clearance hole. In the locked state, the electric drive mechanism drives the first locking block to move until the locking hole is located on the extension line of the first slot, the first locking block locks the first terminal piece, and the first terminal piece and the first electrical connection part are electrically connected.

[0013] Optionally, the first terminal component includes a first narrow-diameter body and two first wide-diameter bodies, with the two wide-diameter bodies disposed at both ends of the first narrow-diameter body;

[0014] The inner diameter of the locking hole is smaller than the inner diameter of the clearance hole, the inner diameter of the locking hole is smaller than the diameter of the first coarse-diameter body, and the inner diameter of the clearance hole is larger than the diameter of the first coarse-diameter body.

[0015] In the unlocked state, the first narrow-diameter body of the first terminal piece can penetrate the clearance hole;

[0016] In the locked state, the first locking block moves such that the first narrow-diameter body passes through the locking hole, and the two first thick-diameter bodies are positioned on both sides of the first locking block.

[0017] Optionally, the electric drive mechanism includes a motor and a transmission component;

[0018] The motor is electrically connected to the controller, and the transmission component and the first locking block are in transmission cooperation.

[0019] The motor and the transmission component are connected to drive the first locking block to move.

[0020] Optionally, the transmission element has an eccentric shaft;

[0021] The first locking block is provided with a mating groove;

[0022] The motor's rotating shaft is connected to the transmission component, the eccentric shaft and the rotating shaft are located in different straight lines, and the eccentric shaft is inserted into the mating groove;

[0023] The motor can drive the first locking block to move to the line where the clearance hole is located in the first slot when it rotates in the first direction, and the motor can drive the first locking block to move to the line where the locking hole is located in the first slot when it rotates in the second direction.

[0024] Optionally, the electronic anti-theft device includes a flexible element;

[0025] The main shell has a second slot.

[0026] The second lock block has a lock groove;

[0027] The elastic element is disposed on the main shell and abuts against the second locking block;

[0028] With the second terminal piece inserted into the second slot, the second terminal piece is inserted into the locking groove, and the second locking block locks the second terminal piece.

[0029] Optionally, the locking groove includes a through groove and a recessed groove located on one side of the opening of the through groove, the recessed groove extending radially along the through groove;

[0030] The second terminal component includes a second narrow diameter body and two second thick diameter bodies, with the two thick diameter bodies respectively disposed at both ends of the second narrow diameter body;

[0031] During the insertion of the second terminal piece into the second slot, the second terminal piece abuts against the inner wall of the recessed groove, causing the second locking block to move and squeeze the elastic member. When one of the second coarse-diameter bodies extends out of the locking groove, the elastic member pushes the second locking block back to its original position, so that the two second coarse-diameter bodies are limited to the two sides of the second locking block.

[0032] Optionally, the elastic element includes a torsion spring, and a column is provided on the main shell;

[0033] The torsion spring is sleeved on the column, and the torsion spring has two torsion arms. One torsion arm abuts against the second locking block, and the other torsion arm abuts against the inner wall of the main shell.

[0034] Optionally, an unlocking hole is provided on the main shell, and the unlocking hole communicates with the inner cavity;

[0035] The extension line of the unlocking hole passes through the second locking block;

[0036] The unlocking hole and the elastic element are located on both sides of the second locking block along the sliding direction.

[0037] Optionally, in the locked state, the first lock block moves to the side of the second lock block away from the unlocking hole, thereby restricting the second lock block from moving to the side away from the unlocking hole.

[0038] Optionally, the electronic anti-theft device includes a frequency element;

[0039] The frequency element is disposed in the inner cavity and is electrically connected to the controller.

[0040] By adopting the above technical solution, this application has the following beneficial effects:

[0041] The electronic anti-theft device of this application is equipped with an electric drive mechanism, which can drive the first lock block to move, so as to automatically adjust the electronic anti-theft device to the locked or unlocked state. It does not require manual operation by staff, reduces the workload of staff, is highly intelligent, and improves reliability. Attached Figure Description

[0042] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0043] Figure 1 This paper shows a schematic diagram of the external structure of the electronic anti-theft device provided in an embodiment of this application;

[0044] Figure 2 This diagram shows the internal structure of the main housing on the hidden side of the electronic anti-theft device provided in this embodiment of the application;

[0045] Figure 3 This illustration shows a schematic diagram of the internal structure of the electronic anti-theft device provided in an embodiment of this application, which conceals the other side of the main casing.

[0046] Figure 4 This diagram shows a structural schematic of the main housing and collar component on the hidden side of the electronic anti-theft device provided in an embodiment of this application;

[0047] Figure 5 This illustration shows a schematic diagram of the structure of the collar component of the electronic anti-theft device provided in an embodiment of this application;

[0048] Figure 6 This diagram illustrates the internal structure of the electronic anti-theft device provided in an embodiment of this application.

[0049] Figure 7 This paper shows another structural schematic diagram of the electronic anti-theft device provided in an embodiment of this application.

[0050] In the diagram: 1. Main housing; 11. First slot; 12. Second slot; 13. Unlocking hole; 2. First locking block; 21. Locking hole; 22. Clearance hole; 23. Mating groove; 24. Mating part; 3. Controller; 31. First electrical connection part; 32. Second electrical connection part; 33. Limit switch; 4. Alarm device; 5. Electric drive mechanism; 51. Motor; 52. Transmission component; 521. Eccentric shaft; 6. Collar component; 61. First terminal component; 611. 612. First large-diameter body; 62. Second terminal piece; 621. Second small-diameter body; 622. Second large-diameter body; 7. Elastic element; 8. Second locking block; 81. Locking groove; 811. Through groove; 812. Recessed groove; 9. Blocking mechanism; 91. First hydraulic device; 911. First cylinder; 912. First piston rod; 92. Second hydraulic device; 921. Second cylinder; 922. Second piston rod; 93. Conduit; 10. Frequency element. Detailed Implementation

[0051] To make the technical solutions and advantages of the embodiments of this application clearer, the exemplary embodiments of this application will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not an exhaustive list of all embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0052] In the description of this application and its embodiments, it should be understood that the terms "top", "bottom", "height", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0053] In this application and its embodiments, unless otherwise expressly specified and limited, the terms "set," "install," "connect," "link," "fix," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0054] In this application and its embodiments, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0055] See Figures 1 to 7 As shown, this application embodiment provides an electronic anti-theft device, including: a main shell 1, a first locking block 2, a controller 3, an electric drive mechanism 5, and a collar member 6. The main shell 1 has an inner cavity and a first slot 11 communicating with the inner cavity. The first locking block 2 is slidably disposed in the inner cavity, and the first locking block 2 has a locking hole 21 and a clearance hole 22, which are connected. The controller 3 is disposed in the inner cavity, and the controller 3 is provided with a first electrical connection part 31 and a second electrical connection part 32. The controller 3 is connected to an alarm device 4. The alarm device 4 can be any one or more of a speaker, a warning light, and a buzzer. The electric drive mechanism 5 is disposed in the inner cavity, and the electric drive mechanism 5 is pulsatorically connected to the first locking block 2 to drive the first locking block 2 to move. The collar member 6 has a first terminal part 61 and a second terminal part 62 respectively disposed at both ends. The collar member 6 can be a flexible structure that can be bent and deformed under external force. The first terminal 61 and the second terminal 62 are electrically connected. The second terminal 62 is connected to the main housing 1 and is electrically connected to the second electrical connection part 32. The collar 6 has at least a conductor on its inner side, for example, a steel wire rope on its inner side, while the outer side can be covered with an insulating sleeve. The first terminal 61 and the second terminal 62 are electrically connected by a conductor.

[0056] The electronic anti-theft tag has an unlocked state and a locked state. In the unlocked state, the electric drive mechanism 5 drives the first locking block 2 to move, so that the clearance hole 22 is located on the straight line of the first slot 11. At this time, the first terminal piece 61 can be easily inserted into or removed from the first slot 11. In the locked state, as... Figure 2As shown, the electric drive mechanism 5 drives the first locking block 2 to move until the locking hole 21 is located on the extension line of the first slot 11. The first locking block 2 locks the first terminal piece 61, and the first terminal piece 61 is electrically connected to the first electrical connection part 31. The controller 3 includes a circuit board, on which the first electrical connection part 31 and the second electrical connection part 32 are provided. The collar piece 6 is a flexible structure that can be inserted into the goods that need to be protected. In the locked state, the circuit board and the collar piece 6 form a complete circuit. When the collar piece 6 is cut, the circuit between the circuit board and the collar piece 6 is broken, which can trigger the alarm device 4. When the collar piece 6 is damaged or maliciously pulled, causing the terminal piece at the end of the collar piece 6 to disconnect from the electrical connection part on the circuit board, the alarm device 4 will also be triggered, thereby promptly alerting the staff.

[0057] In some possible implementation schemes, combined Figure 5 and Figure 6 As shown, the first terminal piece 61 includes a first narrow-diameter body 611 and two first thick-diameter bodies 612. The two first thick-diameter bodies 612 are respectively disposed at both ends of the first narrow-diameter body 611. The inner diameter of the locking hole 21 is smaller than the inner diameter of the clearance hole 22, the inner diameter of the locking hole 21 is smaller than the diameter of the first thick-diameter body 612, and the inner diameter of the clearance hole 22 is larger than the diameter of the first thick-diameter body 612. In the unlocked state, the first narrow-diameter body 611 of the first terminal piece 61 can penetrate the clearance hole 22. In the locked state, the first locking block 2 moves, causing the first narrow-diameter body 611 to penetrate the locking hole 21, and the two first thick-diameter bodies 612 are confined to both sides of the first locking block 2. At this time, even if an external force is applied to the collar piece 6, the first terminal piece 61 will not disengage from the first slot 11 because the diameter of the first thick-diameter body 612 at the end of the first terminal piece 61 is larger than that of the locking hole 21.

[0058] The first electrical connection portion 31 and the second electrical connection portion 32 can be spring members. In the locked state, the first coarse-diameter body 612 of the first terminal member 61 abuts against the spring member, the spring member is in an elastic deformation state, and the spring member and the first terminal member 61 maintain an electrical contact state. Similarly, the end of the second terminal member 62 abuts against the corresponding spring member, the spring member is in an elastic deformation state, and the spring member and the second terminal member 62 maintain an electrical contact state.

[0059] In some possible implementations, the electric drive mechanism 5 includes a motor 51 and a transmission component 52. The motor 51 is electrically connected to the controller 3, and the transmission component 52 is driven to engage with the first locking block 2. The motor 51 and the transmission component 52 are driven to drive the first locking block 2 to move.

[0060] In this embodiment, the electric drive mechanism 5 uses a motor 51. By controlling the rotation of the motor 51, the transmission component 52 acts on the first locking block 2, causing the first locking block 2 to move and adjust its position. This allows the clearance hole 22 of the first locking block 2 to be located on the same line as the first slot 11, or the locking hole 21 of the first locking block 2 to be located on the same line as the first slot 11, thereby controlling the electronic anti-theft tag to enter the unlocked or locked state. The electronic anti-theft device has a battery, which is electrically connected to the circuit board.

[0061] The electronic anti-theft device is equipped with a wireless receiving module, which is electrically connected to the controller 3. The wireless receiving module is used to receive external signals to control the electric drive mechanism 5 to perform locking or unlocking actions. The wireless receiving module can be a frequency element 10.

[0062] In some possible implementations, such as Figure 2 and Figure 6 As shown, the transmission component 52 has an eccentric shaft 521, and the first locking block 2 is provided with a mating groove 23. The rotating shaft of the motor 51 is connected to the transmission component 52. The eccentric shaft 521 and the rotating shaft are located in different straight lines. The eccentric shaft 521 is inserted into the mating groove 23. The motor 51 can drive the first locking block 2 to move to the line where the clearance hole 22 is located on the first slot 11 when it rotates around a first direction. The motor 51 can drive the first locking block 2 to move to the line where the locking hole 21 is located on the first slot 11 when it rotates around a second direction.

[0063] It is important to note that, such as Figure 3 As shown, a limit switch 33 can be installed on the electronic anti-theft device, and the limit switch 33 is electrically connected to the circuit board of the controller 3. A mating part 24 is provided on the first lock block 2. When the first lock block 2 moves to the line where the clearance hole 22 or the locking hole 21 is located in the first slot 11, the mating part 24 can trigger the limit switch 33. At this time, the controller 3 can control the motor 51 to stop rotating, so that the first lock block 2 stops moving and is stable in the unlocked position or the locked position.

[0064] In some possible implementations, such as Figure 2As shown, the electronic anti-theft device includes an elastic element 7, a main housing 1 with a second slot 12, and a second locking block 8 with a locking groove 81. The elastic element 7 is disposed on the main housing 1 and abuts against the second locking block 8. When the second terminal 62 is inserted into the second slot 12, the second terminal 62 is inserted into the locking groove 81, and the second locking block 8 locks the second terminal 62. The elastic element 7 elastically abuts against the second locking block 8, causing one end of the second locking part to abut against the inner wall of the main housing 1 or a blocking structure on the inner wall. This position is the locking position of the second locking block 8, and the second terminal 62 will be locked onto the second locking block 8 and will not disengage from the second locking block 8 under external force.

[0065] In some possible implementation schemes, combined Figure 2 , Figure 5 and Figure 6 As shown, the locking groove 81 includes a through groove 811 and a recessed groove 812 located on one side of the opening of the through groove 811. The recessed groove 812 extends radially along the through groove 811. The second terminal piece 62 includes a second narrow-diameter body 621 and two second thick-diameter bodies 622. The two second thick-diameter bodies 622 are respectively disposed at both ends of the second narrow-diameter body 621. During the process of the second terminal piece 62 being inserted into the second slot 12, the second terminal piece 62 abuts against the inner wall of the recessed groove 812, causing the second locking block 8 to move and squeeze the elastic member 7. When the second thick-diameter body 622 at the end protrudes from the locking groove 81, the elastic member 7 pushes the second locking block 8 to reset, so that the second narrow-diameter body 621 penetrates through the through groove 811. Because the locking groove 81 has shifted, the two second thick-diameter bodies 622 are limited to both sides of the second locking block 8. At this time, under the action of external force, the second terminal piece 62 will not detach from the second locking block 8.

[0066] In some possible implementations, such as Figure 2 As shown, the elastic element 7 includes a torsion spring. A column is provided on the main shell 1, and the torsion spring is sleeved on the column. The torsion spring has two torsion arms. One torsion arm abuts against the second locking block 8, causing the other end of the second locking block 8 to tend to abut against the inner wall of the main shell 1, and the second locking block 8 is in the locked position. The other torsion arm of the torsion spring abuts against the inner wall of the main shell 1.

[0067] In some possible implementations, such as Figure 2As shown, the main shell 1 is provided with an unlocking hole 13, which connects to the inner cavity. The extension line of the unlocking hole 13 passes through the second locking block 8. The unlocking hole 13 and the elastic element 7 are located on both sides of the second locking block 8 along the sliding direction. When it is necessary to unlock the second terminal, a professional tool can be inserted into the unlocking hole 13 and pressed against the second locking block 8. By applying an external force greater than that of the elastic element 7, the second locking block 8 can be moved to the side away from the unlocking hole 13, so that the second locking block 8 moves to the unlocked position. At this time, by applying an external force to the collar 6, the second terminal 62 can be smoothly disengaged from the second locking block 8.

[0068] In some possible implementations, in the locked state, such as Figure 2 As shown, the first locking block 2 moves to the side of the second locking block 8 away from the unlocking hole 13, so as to restrict the second locking block 8 from moving to the side away from the unlocking hole 13.

[0069] Multiple sub-cavities can be provided within the inner cavity of the main shell 1. The first locking block 2 and the second locking block 8 can be located within the same sub-cavity, and under the limiting action of the sub-cavity, they can only reciprocate in one direction. In the locked state, under the action of the elastic element 7, the second locking block 8 is in the locked position, and the first locking block 2 moves to the side of the second locking block 8 away from the unlocking hole 13, thereby restricting the second locking block 8 from moving towards the unlocking position. Through this structural design, in the locked state, the first locking block locks the first terminal piece 61, and at the same time, under the limiting action of the second locking block, the second locking block 8 locks the second terminal piece 62. Neither end of the collar piece 6 will disengage. When it is necessary to unlock the second terminal piece 62, the frequency element 10 needs to receive an authorized command and control the motor 51 to rotate, adjusting the first locking block 2 to move away from the second locking block 8, leaving space for the second locking block 8 to move. At this time, with the help of professional tools, the second locking block 8 will move to the unlocking position to the side of the first locking block 2, so that the second terminal piece 62 can be smoothly pulled out of the locking groove 81 of the second locking block 8.

[0070] like Figure 7 As shown, the electronic anti-theft device provided in this application embodiment also includes a blocking mechanism 9. The blocking mechanism and the first locking block 2 are in a transmission cooperation, used to block or avoid the unlocking hole 13 under the drive of the first locking block. Specifically, when the electronic anti-theft tag is in the unlocked state, the blocking mechanism avoids the unlocking hole 13, and a professional tool inserted into the unlocking hole 13 can abut against the second locking block 8. When the electronic anti-theft tag is in the locked state, the blocking mechanism blocks the unlocking hole 13, and a professional tool inserted into the unlocking hole 13 will abut against the blocking mechanism without contacting the second locking block 8. The second locking block 8 cannot be moved to unlock.

[0071] The sealing mechanism includes a first hydraulic unit 91 and a second hydraulic unit 92. The first hydraulic unit 91 includes a first cylinder 911 and a first piston rod 912. A first piston is disposed at the end of the first piston rod 912, and the first piston is movably disposed in the first cylinder 911. The second hydraulic unit 92 includes a second cylinder 921 and a second piston rod 922. A second piston is disposed at the end of the second piston rod 922, and the second piston is movably disposed in the second cylinder 921. The first cylinder 911 and the second cylinder 921 are connected by a conduit 93. Both the first cylinder 911 and the second cylinder 921 can contain a liquid medium. One of the first cylinder 911 and the first piston rod is connected to the first locking block 2, and the other can be connected to the main housing 1. The second cylinder 921 of the second hydraulic unit 92 can be disposed on the main housing 1, and the second piston rod 922 of the second hydraulic unit 92 can extend in a direction perpendicular to the sliding direction of the second locking block 8. In the locked state, the first locking block 2 moves towards the second locking block 8. The first piston rod 912 moves with the first locking block 2, compressing the internal cavity of the first cylinder 911, causing the internal cavity of the first cylinder 911 to shrink. The corresponding liquid moves through the conduit 93 into the second cylinder 921. The increase in liquid in the second cylinder 921 pushes the second piston rod 922 out of the second cylinder 921 and moves between the second locking block 8 and the unlocking hole 13, blocking the unlocking hole 13 and preventing professional tools from passing through the unlocking hole 13 and contacting the second locking block 8. When the electronic anti-theft tag is switched to the unlocked state, the motor 51 drives the first locking block 2 to move away from the second locking block 8. At this time, the first piston rod 912 gradually extends out of the first cylinder 911, the liquid in the first cylinder 911 increases, while the liquid in the second cylinder 921 decreases. The second piston rod 922 retracts to the space away from the unlocking hole 13 and the second locking block 8. At this time, with the help of professional tools, it can pass smoothly through the unlocking hole 13 and abut against the second locking block 8, and push the second locking block 8 to move to the unlocked position.

[0072] The foregoing disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described above. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0073] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0074] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. An electronic anti-theft device, characterized in that, include: A main shell having an inner cavity and a first slot communicating with the inner cavity; A first locking block is slidably disposed in the inner cavity. The first locking block has a locking hole and a clearance hole, and the locking hole and the clearance hole are connected. A controller is disposed within the inner cavity, and the controller is provided with a first electrical connection part and a second electrical connection part. An alarm device is connected to the controller. An electric drive mechanism is disposed within the inner cavity and is connected to the first locking block in a transmission manner to drive the first locking block to move. A collar component, wherein a first terminal component and a second terminal component are respectively provided at both ends of the collar component, the first terminal component and the second terminal component are electrically connected, and the second terminal component is connected to the main shell and electrically connected to the second electrical connection part; The electronic anti-theft tag has an unlocked state and a locked state. In the unlocked state, the electric drive mechanism drives the first lock block to move, so that the clearance hole is located on the straight line of the first slot, and the first terminal piece can pass through the clearance hole. In the locked state, the electric drive mechanism drives the first locking block to move until the locking hole is located on the extension line of the first slot, the first locking block locks the first terminal piece, and the first terminal piece and the first electrical connection part are electrically connected.

2. The electronic anti-theft device according to claim 1, characterized in that, The first terminal component includes a first narrow diameter body and two first thick diameter bodies, with the two first thick diameter bodies respectively disposed at both ends of the first narrow diameter body; The inner diameter of the locking hole is smaller than the inner diameter of the clearance hole, the inner diameter of the locking hole is smaller than the diameter of the first coarse-diameter body, and the inner diameter of the clearance hole is larger than the diameter of the first coarse-diameter body. In the unlocked state, the first narrow-diameter body of the first terminal piece can penetrate the clearance hole; In the locked state, the first locking block moves such that the first narrow-diameter body passes through the locking hole, and the two first thick-diameter bodies are positioned on both sides of the first locking block.

3. The electronic anti-theft device according to claim 1, characterized in that, The electric drive mechanism includes a motor and transmission components; The motor is electrically connected to the controller, and the transmission component and the first locking block are in transmission cooperation. The motor and the transmission component are connected to drive the first locking block to move.

4. The electronic anti-theft device according to claim 3, characterized in that, The transmission component has an eccentric shaft; The first locking block is provided with a mating groove; The motor's rotating shaft is connected to the transmission component, the eccentric shaft and the rotating shaft are located in different straight lines, and the eccentric shaft is inserted into the mating groove; The motor can drive the first locking block to move to the line where the clearance hole is located in the first slot when it rotates in the first direction, and the motor can drive the first locking block to move to the line where the locking hole is located in the first slot when it rotates in the second direction.

5. The electronic anti-theft device according to claim 1, characterized in that, Including elastic components; The main shell has a second slot. The second lock block has a lock groove; The elastic element is disposed on the main shell and abuts against the second locking block; With the second terminal piece inserted into the second slot, the second terminal piece is inserted into the locking groove, and the second locking block locks the second terminal piece.

6. The electronic anti-theft device according to claim 5, characterized in that, The locking groove includes a through groove and a recessed groove located on one side of the opening of the through groove, the recessed groove extending radially along the through groove. The second terminal component includes a second narrow diameter body and two second thick diameter bodies, with the two thick diameter bodies respectively disposed at both ends of the second narrow diameter body; During the insertion of the second terminal piece into the second slot, the second terminal piece abuts against the inner wall of the recessed groove, causing the second locking block to move and squeeze the elastic member. When one of the second coarse-diameter bodies extends out of the locking groove, the elastic member pushes the second locking block back to its original position, so that the two second coarse-diameter bodies are limited to the two sides of the second locking block.

7. The electronic anti-theft device according to claim 5, characterized in that, The elastic element includes a torsion spring, and a column is provided on the main shell; The torsion spring is sleeved on the column, and the torsion spring has two torsion arms. One torsion arm abuts against the second locking block, and the other torsion arm abuts against the inner wall of the main shell.

8. The electronic anti-theft device according to claim 5, characterized in that, The main shell is provided with an unlocking hole, which communicates with the inner cavity; The extension line of the unlocking hole passes through the second locking block; The unlocking hole and the elastic element are located on both sides of the second locking block along the sliding direction.

9. The electronic anti-theft device according to claim 8, characterized in that, In the locked state, the first lock block moves to the side of the second lock block away from the unlocking hole, thereby restricting the second lock block from moving to the side away from the unlocking hole.

10. The electronic anti-theft device according to any one of claims 1-9, characterized in that, Includes frequency components; The frequency element is disposed in the inner cavity and is electrically connected to the controller.

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