Commodity anti-theft device

Abstract

The present invention provides a product anti-theft device, comprising: an RFID electronic tag, a magnetic lock cylinder, an electromagnetic unlocker, and a lock body consisting of an upper lock body and a lower lock body; the RFID electronic tag is disposed on the lock body; the magnetic lock cylinder and the electromagnetic unlocker are disposed on either side of the interior of the lower lock body, and the magnetic lock cylinder moves toward the electromagnetic unlocker under the action of a magnetic force; the upper lock body has a buckle, and when the lock body is in the locked state, the magnetic lock cylinder is inserted into the buckle under the action of a magnetic force. This application can realize an acoustic magnetic anti-theft buckle that automatically unlocks the buckle without contact, eliminating the need for cashiers in shopping malls to use a special decoder to unlock the buckle, and realizing the automatic recycling and reuse of the acoustic magnetic anti-theft buckle in unattended scenarios.

Description

Technical Field

[0001] The present application belongs to the technical field of shopping mall anti-theft supervision, and specifically relates to a commodity anti-theft device. Background Art

[0002] At present, the devices used in shopping malls to prevent theft of goods are mainly acoustic and magnetic anti-theft buckles, and the devices used to automatically identify goods are mainly RFID electronic tags.

[0003] Among them, the acousto-magnetic anti-theft buckle utilizes the principle of resonance. When the buckle, attached to the product, enters the detection zone, it resonates. A receiver receives the resonance signal and triggers an alarm. The buckle typically takes the form of a hard tag, consisting of a nail, a plastic shell, and a lock core. The lock core consists of a fixed number of iron beads, an iron ring, and a spring. When the buckle is closed (i.e., attached to the product), the spring pushes the iron ring to secure the beads in the grooves of the nail, preventing the buckle from being undone. However, the buckle cannot be used to automatically identify product information; a scanner still needs to scan the barcode printed on the product packaging. The buckle is primarily used to prevent theft of goods. After the consumer checks out, it must be attached to a specific decoder. The decoder's strong magnetic force draws the iron beads away from the nail grooves to release it (this requires cashier operation). The buckle can be recycled and reused, but it cannot be used in unattended situations.

[0004] RFID tags consist of a coupling element and a chip. Each RFID tag has a unique electronic code. When an RFID tag attached to a product enters the detection area, the system automatically identifies the product based on the electronic code read from the RFID tag. RFID tags are typically attached to products as soft labels, making them non-reusable and wasteful. Summary of the Invention

[0005] The present application provides a commodity anti-theft device to at least solve the problem that the RFID electronic tags on the current commodities cannot be reused and the acoustic and magnetic anti-theft buckles of the commodities need to be unlocked using a specific decoder.

[0006] The present application provides a commodity anti-theft device, comprising:

[0007] RFID electronic tag, magnetic lock cylinder, electromagnetic unlocker, lock body consisting of upper lock body and lower lock body;

[0008] The RFID electronic tag is set on the lock body;

[0009] The magnetic lock core and the electromagnetic unlocker are respectively arranged on both sides of the lower lock body, and the magnetic lock core moves toward the electromagnetic unlocker under the action of magnetic force;

[0010] The upper lock body has a ring buckle. When the lock body is in a locked state, the magnetic lock core penetrates the ring buckle under the action of magnetic force.

[0011] In one embodiment, the electromagnetic unlocking device comprises:

[0012] A coil is used to generate alternating current under the induction of an external magnetic field;

[0013] Rectifier diode, connected to the coil, used to convert the AC power provided by the coil into DC power;

[0014] An electromagnet, connected to a rectifier diode, is used to generate a magnetic field;

[0015] The rectifier diode is electrically connected to the electromagnet.

[0016] In one embodiment, the magnetic field generated by the electromagnet when receiving direct current provided by the rectifier diode is opposite to the magnetic field generated by the magnetic lock cylinder.

[0017] In one embodiment, when the lock body is in the locked state, the electromagnet is non-magnetic.

[0018] In one embodiment, the magnetic lock core is connected to the inner side wall of the lower lock body through a first elastic component.

[0019] In one embodiment, a second elastic component is provided at the bottom of the lower lock body. When the lock body is not closed, the second elastic component is located between the magnetic lock core and the electromagnetic unlocker.

[0020] In one embodiment, when the lock body is closed, the second elastic component is squeezed by the buckle and is in a compressed state.

[0021] In one embodiment, the first elastic component is in a stretched state when the lock body is closed.

[0022] In one embodiment, the top of the second elastic component in a natural state is not lower than the height from the bottom of the lower lock body to the magnetic lock core.

[0023] In one embodiment, a lifting lug is provided on each of the upper lock body and the lower lock body. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1This is an overall schematic diagram of the commodity anti-theft device provided in this application.

[0026] Figure 2A This is an internal perspective view of the commodity anti-theft device provided in this application.

[0027] Figure 2B This is a schematic diagram of the interior of the commodity anti-theft device provided in this application when closed.

[0028] Figure 2C This is a schematic diagram of the interior of the commodity anti-theft device provided in this application when it is turned on.

[0029] Figure 3 This is a working principle diagram of the electromagnetic unlocker in this application. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] Based on the problems existing in the background technology, this application provides a product anti-theft device suitable for shopping malls. It adopts the form of RFID electronic tags + hard tags, avoiding the problem of requiring shopping mall cashiers to unlock the hard tags on a specific decoder. At the same time, after the consumer checks out, the checkout system can rewrite the electronic code in the RFID electronic tag through a specific decoder, thereby realizing the reuse of the electronic tag. The product anti-theft device provided by this application includes:

[0032] RFID electronic tag, magnetic lock cylinder, electromagnetic unlocker, lock body consisting of upper lock body and lower lock body;

[0033] The RFID electronic tag is set on the lock body;

[0034] The magnetic lock core and the electromagnetic unlocker are respectively arranged on both sides of the lower lock body, and the magnetic lock core can move toward the electromagnetic unlocker under the action of magnetic force;

[0035] The upper lock body has a ring buckle. When the lock body is in a locked state, the magnetic lock core penetrates the ring buckle under the action of magnetic force.

[0036] In a specific embodiment, if Figure 1 As shown, the upper lock body 2 and the lower lock body 5 together form a complete lock body. The commodity anti-theft device includes an RFID electronic tag 1, which can be set on the upper lock body 2 or the lower lock body 5. Figure 2AAs shown, a ring buckle 6 is provided on the upper lock body 2, and a magnetic lock core 4 and an electromagnetic unlocker 3 are provided inside the lower lock body 5. Figure 2B As shown, when the lock body is in a closed state, the magnetic lock core 4 passes through the ring buckle 6 under the action of magnetic force and attracts the electromagnetic unlocker 3.

[0037] This application places an RFID tag on the lock body (i.e., a hard tag in the prior art), allowing it to be reused without having to be torn off after use. Furthermore, the lock body uses electromagnetic attraction, allowing unlocking without the need for a specific decoder, enabling automatic recovery and reuse of the electromagnetic anti-theft buckle in unattended scenarios.

[0038] In one embodiment, the electromagnetic unlocking device comprises:

[0039] A coil is used to generate alternating current under the induction of an external magnetic field;

[0040] Rectifier diode, connected to the coil, used to convert the AC power provided by the coil into DC power;

[0041] An electromagnet, connected to a rectifier diode, is used to generate a magnetic field;

[0042] The rectifier diode is electrically connected to the electromagnet.

[0043] In a specific embodiment, the electromagnetic unlocker 3 includes a secondary coil, a rectifier diode and an electromagnet connected to the DC output terminal. The working principle diagram of the electromagnetic unlocker 3 is shown in FIG. Figure 3 As shown, the working principle of the electromagnetic unlocker is based on the electromagnetic induction wireless charging mode. The alternating current generated by the external system (installed at the cash register) passes through the primary coil of the external system, and generates current (alternating current) in the secondary coil through electromagnetic induction. The alternating current passes through the rectifier diode. With the help of the unidirectional conductivity of the rectifier diode (that is, in the working circuit, the current can only flow into the positive pole of the rectifier diode and flow out from the negative pole of the rectifier diode), the alternating current flowing through the rectifier diode is converted into direct current, and then supplied to the electromagnet from the direct current output end. At this time, the electromagnet has magnetism. The wireless charging mode in this embodiment can also be replaced by a magnetic field resonance mode. The principle of the magnetic field resonance mode is that two devices with the same frequency or resonating at a specific frequency can exchange energy with each other. It can also be replaced by other new modes. This application is not limited to this.

[0044] In one embodiment, the magnetic field generated by the electromagnet when receiving direct current provided by the rectifier diode is opposite to the magnetic field generated by the magnetic lock cylinder.

[0045] In a specific embodiment, the magnetic field generated by the electromagnet in the electromagnetic unlocker when DC current is applied is opposite to the magnetic field generated by the magnetic lock core 4. The magnetic lock core 4 and the electromagnetic unlocker 3 repel each other due to the opposite magnetic fields. Under the action of the repulsive force, the magnetic lock core 4 is ejected from the ring buckle 6. Figure 2C As shown, the buckle loses its fixation, the upper lock body 2 is separated from the lower lock body 5, and unlocking is completed.

[0046] In one embodiment, when the lock body is in the locked state, the electromagnet is non-magnetic.

[0047] In a specific embodiment, when the lock body is in a locked state, the electromagnet is not energized and has no magnetism. At this time, the magnetic lock core 4 passes through the ring buckle 6 and is attracted to the electromagnetic unlocker 3, so that the ring buckle 6 can be fixed in the lower lock body 5, thereby realizing the closure of the upper lock body 2 and the lower lock body 5.

[0048] In one embodiment, the magnetic lock core is connected to the inner side wall of the lower lock body through a first elastic component.

[0049] In a specific embodiment, if Figure 2A As shown, the magnetic lock cylinder 4 is connected to the inner wall of the lower lock body 5 via a spring 7. Since the magnetic lock cylinder and electromagnetic unlocking device are respectively arranged on either side of the lower lock body, the magnetic lock cylinder 4 will move toward the electromagnetic unlocking device under the action of magnetic force. When the electromagnet is energized to generate magnetism, the magnetic lock cylinder 4 is ejected from the ring 6. At this time, the spring 7 is compressed, so that the ejected magnetic lock cylinder 4 does not directly impact the inner wall of the lower lock body 5. Moreover, when the electromagnet is not energized, the spring 7 provides support for the magnetic lock cylinder 4.

[0050] In one embodiment, a vertically placed second elastic component is provided at the bottom of the lower lock body. When the lock body is not closed, the upper end of the second elastic component is located between the magnetic lock core and the electromagnetic unlocker.

[0051] In a specific embodiment, if Figure 2C As shown, a vertically arranged spring 8 is provided at the bottom of the lower lock body 5. The bottom end of the spring 8 is fixed to the bottom of the lower lock body 5. When the lock body is not closed, the spring 8 is in a normal state (naturally extended state), and the top of the spring 8 is between the magnetic lock cylinder 4 and the electromagnetic unlocking device 3, acting as a spacing to prevent the magnetic lock cylinder 4 and the electromagnetic unlocking device 3 from being attracted to each other by magnetic force. In this way, when the lock body is closed, the buckle 6 can compress the spring 8 downward, allowing the magnetic lock cylinder 4 to penetrate the buckle 6.

[0052] In one embodiment, when the lock body is closed, the second elastic component is squeezed by the buckle 6 and is in a compressed state.

[0053] In a specific embodiment, if Figure 2BAs shown, when the lock body is closed, the spring 8 is pressed downward by the ring 6. At this time, there is no spring blocking the magnetic lock core 4 and the electromagnetic unlocking device 3. Therefore, the magnetic lock core 4 can pass through the ring 6 and attract each other, closing the upper and lower lock bodies. When the electromagnet receives the DC power provided by the rectifier diode and the magnetic field generated is opposite to the magnetic field generated by the magnetic lock core 4, the upper and lower lock bodies will separate. The ring 6 will spring upward under the thrust of the spring 8, causing the upper lock body 2 to disengage from the lower lock body 5, thereby realizing the automatic release function of the bayonet.

[0054] In one embodiment, the first elastic component is in a stretched state when the lock body is closed.

[0055] In a specific embodiment, if Figure 2B As shown, when the lock body is closed, the spring 7 is in a stretched state, but at this time the pulling force provided by the spring 7 to the magnetic lock core 4 is less than the attraction between the magnetic lock core 4 and the electromagnetic unlocker 3, so that the magnetic lock core 4 can be close to the electromagnetic unlocker 3.

[0056] In one embodiment, in a natural state, the top of the second elastic component is not lower than the height from the bottom of the lower lock body to the upper part of the magnetic lock core.

[0057] In a specific embodiment, the top of the spring 8 in a normal state is between the magnetic lock core 4 and the electromagnetic unlocker 3 or higher than the magnetic lock core 4 and the electromagnetic unlocker 3 to act as a spacer and prevent the magnetic lock core 4 and the electromagnetic unlocker 3 from being close to each other.

[0058] In one embodiment, a lifting lug is provided on each of the upper lock body and the lower lock body.

[0059] In a specific embodiment, if Figure 1 As shown, the upper lock body 2 and the lower lock body 5 are each provided with a lifting ear 9 to facilitate the user to hold the lock body.

[0060] The following is a practical example to illustrate the workflow of the commodity anti-theft device of this application:

[0061] When the lock body is open, the upper and lower lock bodies separate. During the closing process, the ring of the upper lock body penetrates into the lower lock body, squeezing the spring at the bottom of the lower lock body. The spring at the bottom shortens, leaving no obstacle between the magnetic lock core and the electromagnetic unlocker. The magnetic lock core can then pass through the ring and attract the electromagnetic unlocker, securing the ring, thus achieving the purpose of closing the upper and lower lock bodies. At this time, the spring connecting the magnetic lock core and the lower lock body is in a stretched state.

[0062] When a customer checks out, the RFID tag on the lock body is scanned by the checkout machine. Once the checkout is complete, the checkout machine sends a command to the unlocker (external system) installed at the cashier, which powers up and opens the lock. The customer then brings the lock body close to the unlocker, which energizes the electromagnetic unlocker in the lock body through contactless electromagnetic induction. The electromagnetic unlocker converts the AC power received from the unlocker into DC power. The electromagnet inside the electromagnetic unlocker generates a magnetic field opposite to the magnetic lock cylinder. The repulsive magnetic force ejects the magnetic lock cylinder, and the compressed spring at the bottom of the lower lock body resets and ejects the ring, completing the unlocking process. At the same time, after the consumer checks out, the system can rewrite the electronic code in the RFID tag on the lock body through a specific decoder, enabling the reuse of the RFID tag.

[0063] This application improves the traditional product identification tag and provides a product anti-theft device. With the help of RFID electronic tag technology, wireless charging technology and the principle of electromagnetization, it realizes the function of automatic identification of products, and can automatically unlock the buckle and detach the product identification tag of the product through short-range electromagnetic induction, avoiding the need for shopping mall cashiers to operate the unlocking on a specific decoder. It has the advantage of an acoustic magnetic anti-theft buckle that can automatically unlock the buckle through electromagnetic induction, eliminating the need for shopping mall cashiers to use a specific decoder to unlock it, and realizes the function of automatic recycling and reuse of the acoustic magnetic anti-theft buckle in unattended scenarios.

[0064] Specific embodiments are used in the present invention to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core ideas. At the same time, for those skilled in the art, according to the ideas of the present invention, there may be changes in the specific implementation methods and application scopes. In summary, the contents of this specification should not be understood as limiting the present invention.

[0065] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0066] In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples, unless they contradict each other. The above is only an embodiment of the embodiment of this specification and is not intended to limit the embodiment of this specification. For those skilled in the art, the embodiment of this specification may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiment of this specification shall be included within the scope of the claims of the embodiment of this specification.

Claims

1. A commodity anti-theft device, characterized in that: Including: RFID electronic tag, magnetic lock core, electromagnetic unlocker, lock body consisting of upper lock body and lower lock body; The RFID electronic tag is arranged on the lock body and is used to be scanned by the checkout machine when the consumer checks out; The magnetic lock core and the electromagnetic unlocker are respectively arranged on both sides of the interior of the lower lock body, and the magnetic lock core can move toward the electromagnetic unlocker under the action of magnetic force; The upper lock body has a buckle. When the lock body is in the locked state, the electromagnet is non-magnetic. The magnetic lock core penetrates the buckle under the action of magnetic force and is attracted to the electromagnetic unlocker, so that the buckle is fixed in the lower lock body, thereby achieving the closure of the upper lock body and the lower lock body. The magnetic field generated by the electromagnet in the electromagnetic unlocker when direct current is passed is opposite to the magnetic field generated by the magnetic lock core. The magnetic lock core and the electromagnetic unlocker repel each other due to the opposite magnetic fields. Under the action of the repulsive force, the magnetic lock core is ejected from the ring buckle, the ring buckle loses its fixation, the upper lock body is separated from the lower lock body, and the unlocking is completed; after the consumer checks out, a specific decoder is used to rewrite the electronic code in the RFID electronic tag on the lock body.

2. The commodity anti-theft device according to claim 1, characterized in that: The electromagnetic unlocker comprises: A coil is used to generate alternating current under the induction of an external magnetic field; a rectifier diode connected to the coil and used to convert the alternating current provided by the coil into direct current; The electromagnet is connected to the rectifier diode and is used to generate a magnetic field.

3. The commodity anti-theft device according to claim 2, characterized in that: The magnetic field generated by the electromagnet when receiving the direct current provided by the rectifier diode is opposite to the magnetic field generated by the magnetic lock core.

4. The commodity anti-theft device according to claim 1, characterized in that: The magnetic lock core is connected to the inner side wall of the lower lock body through a first elastic component.

5. The commodity anti-theft device according to claim 1, characterized in that: A vertically placed second elastic component is provided at the bottom of the lower lock body. When the lock body is not closed, the upper end of the second elastic component is located between the magnetic lock core and the electromagnetic unlocker.

6. The commodity anti-theft device according to claim 5, characterized in that: When the lock body is closed, the second elastic component is squeezed by the buckle and is in a compressed state.

7. The commodity anti-theft device according to claim 4, characterized in that: The first elastic component is in a stretched state when the lock body is closed.

8. The commodity anti-theft device according to claim 5, characterized in that: The top of the second elastic component in a natural state is not lower than the height from the bottom of the lower lock body to the magnetic lock core.

9. The commodity anti-theft device according to claim 1, characterized in that: The upper lock body and the lower lock body are each provided with a lifting ear.

Images