KR200216979Y1 - Electronic Article Surveillance - Google Patents

Abstract

The present invention relates to an anti-theft device of the present invention, a lower tag 10 having a first accommodating portion 7 in which the locking device 1 is accommodated inward, and a second accommodating portion 7 coupled to the inner side. Receiving portion 21 is formed, the longitudinally long seating groove 23 is formed at its edge, the upper tag 20 is coupled to the lower tag 10, the upper tag 20 and lower coupled to the product Locking pin 30 that is locked or unlocked to the locking device 1, the first strip 41 is provided on the bottom of the upper tag, the second strip provided on the first strip 41 so that the tag 10 is held in engagement Vibrating magnetic field sensitive sensor is inserted into the vibration magnetic field sensor 40 and the seating groove 23 of the upper tag 20 formed of a magnet (45) provided spaced apart from the strip 42 and the second strip (42). It consists of an armature-sensitive sensor 50 operating in a lower frequency band (40).

The present invention provides the effect of improving the compatibility of the anti-theft device by assembling the armature sensor and the vibrating magnetic field sensor in one tag, regardless of the frequency of use of the anti-theft system installed in the store. do.

Description

Anti-theft device {Electronic Article Surveillance}

The present invention relates to a product anti-theft device, in particular, the product is installed at the entrance of the store, and the product for detecting the unauthorized removal of goods through the entrance of the store by transmitting and receiving electrically connected to the transmission and reception antenna connected to the product theft prevention system An anti-theft device.

Electronic Article Surveillance (EAS) includes RF (radio frequency), Electronic-Magnetic (EM) and Acoustic-magnetic Technology (AT) depending on the driving method.

The anti-theft device applied to the RF system is operated by transmitting and receiving a predetermined frequency with a transmission and reception antenna installed in the entrance and the like of the store. If the RF-applied anti-theft device is removed from the store's doorway without permission, the transceiving antenna installed at the store's doorway and the RF-applied anti-theft device transmit and receive a predetermined frequency. An alarm is triggered by the prevention system to alert to unauthorized release of goods. The anti-theft device applied to the RF method uses a frequency of 8.2MHz, there is a disadvantage that can not detect the packaging of metal or foil components.

In order to improve the shortcomings of the RF method that cannot detect metal or foil components, the armature method and the vibration field method have appeared. In the armature method, an amorphous metal material is made long and thin in a wire shape, or a reinforcing magnetic material is assembled to the wire shape. The production cost is inexpensive by constructing a product anti-theft device in the shape of wire, but there is a disadvantage in that the sensing distance is short and a false alarm occurs due to the operation at 70Hz to 7.5KHz.

The vibrating magnetic field forms a product prevention device by forming a permalloy material into a thin strip, and operates and transmits a single frequency of 58KHz or 60KHz in the form of a vibration so that there is no false alarm and it is related to metal components. Detected without, but has a high manufacturing cost and using a single frequency is incompatible with other models.

As described above, the conventional anti-theft device is configured to operate at a specific frequency in accordance with the method using one of the RF method, the armature method or the vibration magnetic field method, so that a system for transmitting and receiving a specific frequency is not installed in the store. The disadvantage is that you cannot use anti-theft devices that operate at specific frequencies.

The purpose of the present invention is to provide a product anti-theft device that can be used in a wide frequency band by assembling the armature sensor and the vibration magnetic field sensor in a single tag (TAG) regardless of the frequency of use of the product anti-theft system installed in the store have.

Another object of the present invention is to improve the compatibility of the anti-theft device by assembling the armature sensor and the vibrating magnetic field sensor in one tag of the anti-theft device.

1 is an exploded assembly perspective view of an anti-theft device according to the present invention,

2 is an internal perspective view of the upper tag shown in FIG. 1;

3 is a cross-sectional view of the armature-sensitive sensor.

<Code Description of Main Parts of Drawing>

10: lower tag 20: upper tag

30: locking pin 40: vibration magnetic field sensor

50: armature sensitive sensor

In order to achieve the above object, an anti-theft device of the present invention includes a lower tag having a first accommodating part for receiving a locking device therein; A second accommodating portion having a first accommodating portion formed therein and having a long seating groove formed in a longitudinal direction at an edge thereof, and an upper tag coupled with a lower tag; A locking pin that is locked or unlocked to the locking device so that the upper and lower tags coupled to the product are held together; A vibrating magnetic field sensitive sensor formed of a first strip provided on a bottom surface of an upper tag, a second strip provided on an upper portion of the first strip, and a magnet provided at a predetermined distance from the second strip; And an armature sensitive sensor inserted into the mounting groove of the upper tag and operating in a lower frequency band than the vibrating magnetic field sensitive sensor.

The wire is characterized by having a distance of at least 3 mm from the edges of the first strip and the second strip.

Hereinafter, the present invention will be described with reference to the accompanying drawings.

1 is an exploded assembly perspective view of the anti-theft device according to the present invention, Figure 2 is an internal perspective view of the upper tag shown in FIG.

As shown, the anti-theft device of the present invention is the lower tag 10 is formed with a first receiving portion 7 is accommodated in the locking device 1, the first receiving portion 7 is coupled to the inside The second accommodating part 21 is formed, and a long recess 23 is formed in the longitudinal direction at the edge thereof, and the upper tag 20 coupled to the lower tag 10 and the upper tag 20 coupled to the product. And a locking pin 30 that is locked or unlocked to the locking device 1 so that the lower tag 10 is coupled and maintained, a first strip 41 provided on the bottom of the upper tag, and an upper portion of the first strip 41. The vibration magnetic field is inserted into the vibration magnetic field sensitive sensor 40 and the mounting groove 23 of the upper tag 20 formed of the magnet 45 provided at a predetermined interval apart from the second strip 42 and the second strip 42. It is composed of an armature sensitive sensor 50 that operates in a lower frequency band than the sensitive sensor 40.

As shown in FIG. 3, the armature sensitive sensor 50 includes a wire 51 formed of an amorphous material and a protective film 53 formed on the upper and lower portions of the wire 51 to protect the wire 51.

The wire 51 is spaced at least 3 mm from the edges of the first strip 41 and the second strip 42.

Operation of the anti-theft device of the present invention according to the above configuration is as follows.

The anti-theft device of the present invention is composed of the lower tag 10, the upper tag 20, the locking pin 30, the vibration magnetic field sensor 40 and the armature sensor (50, 50a). The lower tag 12 is a first receiving the locking device (1) consisting of a ball bearing (5) of three or four pairs inward, and a spring (3) and a support (4) for supporting the spring (3) Receiving portion 7 is formed, a fastening hole (not shown) is formed on the bottom surface of the tag assembled with the upper tag 20 and the lower tag 10 by passing the locking pin 30 through the goods, such as clothing. The product is not artificially separated from the tags 10 and 20 without inserting the locking pin 30 between the ball bearings 5 through the fastening hole and using a separate separator.

The upper tag 20 has a second accommodating portion 21 in which the first accommodating portion 7 is coupled to the inside thereof, and a longitudinally long seating groove 23 is formed at an edge thereof, so that the upper tag 20 is formed in the seating groove 23. As shown in FIG. 3, the armature sensor 50 including the wire 51 formed of the amorphous material and the protective film 53 formed on the upper and lower portions of the wire 51 is inserted to protect the wire 51. . The first strip 41, the second strip 42, and the magnet 45 of the vibrating magnetic field sensitive sensor 40 are sequentially formed from the inner bottom surface of the upper tag 20. The first strip 41 and the second strip 42 are formed of permalloy material. The upper tag 20 has a first stopper 25 for preventing the magnet 45 from flowing in the longitudinal direction, and a second stopper (25) for preventing the magnet 45 from flowing in the width direction. 27) is formed. The magnet 45 is formed of a plastic material and is magnetized only at the front end thereof, and protrusions 47 supported on the support part 28 of the upper tag 20 are formed at left and right edges thereof, so that the magnet 45 and the second strip ( 42) are spaced a predetermined distance apart.

As shown in FIG. 1, the armature sensitive sensor 50a having a wire 51 formed of an amorphous material is formed from the edges of the first strip 41 and the second strip 42 of the vibrating magnetic field sensitive sensor 40. It may be attached to the bottom surface of the lower tag 10 by the adhesive tape 53a in the longitudinal direction of the lower tag 10 spaced apart.

The upper tag 20 and the lower tag 10 are formed with a coupling groove 29 and a coupling rib 9 to be coupled to each other, so that the upper tag 20 is assembled on the lower tag 10 so that one tag ( 10 and 20, the vibrating magnetic field sensor 40 and the armature sensor 50, 50a is mounted in the longitudinal direction of the tag (10, 20).

If the anti-theft device is not separated from the product, that is, when the product passes through the detection zone at the store entrance due to theft, the vibration magnetic field sensor 40 or the electric sensor (50, 50a) This can prevent theft of goods.

In the anti-theft device of the present invention, the vibrating magnetic field sensitive sensor 40 and the armature sensitive sensor 50, 50a are integrated into one tag 10, 20 and used. By vibrating the magnetic field sensitive sensor 40 and the armature sensitive sensor 50, 50a in one tag (10, 20) integrally, the vibration magnetic field sensitive sensor 40 operates in the frequency band of 50KHz to 60KHz, armature sensitive sensor 50, 50a can be operated by operating in the frequency range of 50Hz to 12.5KHz.

Since the armature sensitive sensors 50 and 50a operate in a lower frequency band than the vibratory magnetic field sensitive sensor 40, the armature sensitive sensors normally operate in the respective frequency bands of the vibrating magnetic field sensitive sensor 40 and the armature sensitive sensor 50 and 50a. The wires 51 of the sensors 50 and 50a should be spaced at least 3 mm from the edges of the first strip 41 and the second strip 42 of the vibrating magnetic field sensitive sensor 40. If the wire 51 does not space more than 3 mm from the edges of the first strip 41 and the second strip 42, the electromagnetic sensitive sensors 50 and 50a and the vibrating magnetic field sensitive sensor 40 do not interfere with each other. The armature sensitive sensors 50 and 50a that are generated and operate in the low frequency band may not operate.

As described above, by equipping one product anti-theft device with vibration magnetic field sensor and armature-sensing sensor in one tag, the vibration magnetic field method and the armature method are used in a wide frequency band regardless of the operating frequency of the product anti-theft system installed in the store. It can be used to improve the compatibility of the anti-theft device.

As described above, the present invention assembles the armature sensitive sensor and the vibrating magnetic field sensitive sensor into one tag so that they can be used in a wide frequency band regardless of the frequency of use of the anti-theft system installed in the store. To improve the effect.

Claims (3)

In the anti-theft device to detect theft of goods, A lower tag having a first accommodating part to accommodate the locking device inward; A second accommodating part having an inner side in which the first accommodating part is coupled is formed, and a long recess in the longitudinal direction is formed at an edge thereof, and an upper tag coupled with the lower tag; A locking pin that is locked or unlocked to the locking device so that the upper and lower tags coupled to the product are held together; A vibrating magnetic field sensitive sensor formed of a first strip provided on a bottom surface of the upper tag, a second strip provided on an upper portion of the first strip, and a magnet provided at a predetermined distance from the second strip; And The product anti-theft device, characterized in that the armature sensor is inserted into the mounting groove of the upper tag to operate at a lower frequency than the vibrating magnetic field sensor. The sensor of claim 1, wherein the armature sensitive sensor A wire formed of an amorphous material; And Anti-theft device, characterized in that provided with a protective film formed on the top and bottom of the wire to protect the wire. 3. The anti-theft device of claim 2, wherein the wye has a spacing of at least 3 mm from edges of the first strip and the second strip.