KR100752916B1 - Electronic article surveillance - Google Patents

Abstract

A device for preventing a theft of articles is provided to simplify the structure by locking and releasing a fixing pin through the movement of a moving plate having an elongated hole. A device for preventing a theft of articles has a first locking unit locking a fixing pin(40) for a tag body(10) in one direction. In the first locking unit, a fixing plate(14) is settled in the tag body at a part separated from a first hole(11) in a predetermined gap and provided with a second hole(15) formed on the same axis of the first hole to pass the fixing pin. A moving plate(12) of a magnetic body is installed between the upper part of the tag body and the fixing plate to slide at a right angle to the combination direction of the fixing pin and provided with an elongated hole(13) formed in the movement direction and composed of large and small diameter parts connected with gradually reducing the diameter. A first spring(16) applies elastic force to position the small diameter part of the moving plate on the same axis of the second hole. The fixing pin has hanging sills formed on the outer peripheral surface at regular intervals. The hanging sills of the fixing pin are locked to the rim of the small diameter part of the moving plate by elastic force of the first spring. The moving plate is moved by magnetic force of a first separator and separated through the large diameter part.

Description

Product Antitheft Device {Electronic Article Surveillance}

1A and 1B are cross-sectional views showing a conventional product anti-theft device,

2 to 4 is an operation cross-sectional view illustrating an operating state of the product anti-theft device of the present invention,

5 is a schematic view showing an extract of the pin;

6 and 7 are schematic views illustrating the operating state of the first locking portion employed in the apparatus of the present invention;

8 is an exploded cross-sectional view of the second locking portion employed in the apparatus of the present invention.

<Explanation of symbols for main parts of the drawings>

10 ... tag body 11 ... first hole

12 ... Movement Plate 13 ... Hong

31 Lower cover 32 Upper cover

33.Locking ball 40.Retaining pin

The present invention relates to a product anti-theft device that is mounted directly on the display merchandise and installed at the entrance when the goods are smuggled out by theft and detect the theft of goods when passing through the gate with the built-in transmission and reception antenna.

In addition, the present invention relates to a product anti-theft device having a double locking portion that adopts a double locking portion so that the unlocking of the device is not easy and the unlocking operation is smoothed by the smooth movement of the locking ball.

In general, stores of various goods, such as clothing stores are selling a lot of products directly to the store bar, there is a risk of theft accident to avoid the eyes of the sales person in the product guide. Of course, if the size of the store is small, the risk of theft is not so high, but in large stores such as department stores or large clothing stores, there is a high risk of theft due to the nature of the store, and in fact, theft accident using congested gaps in product sales. Is occurring frequently. As a result, stores of a certain size may place a product watcher separately from the sales person, or employ more salesmen than necessary to guide and monitor the goods, which in turn increases the price of the goods and maintains the store. .

In particular, in recent years, various stores are becoming larger due to social trends, and the number of store managers is increasing accordingly, causing a price increase and double pressure of management pressure.

Figure 1 shows an example of such a product theft prevention device. It consists of a rocker body (locker body) 1, in which an electromagnetic sensitive sensor (not shown) is built, and a fixing pin 6 inserted through the product A and fixed to the rocker body 1. As shown in FIG. 1A, when the fixing pin 6 penetrates through the product A and is inserted into the assembly hole 1a of the rocker body 1 from the rear side of the product A, the neck portion of the outer circumference of the fixing pin 6 is The locking ball 3 of the rocker body 1 is elastically fitted by the pusher 4 and the spring 5 to 6a so that the anti-theft device is attached and fixed to the product A. do.

In this state, the rocker body (1) and the fixing pin (6) cannot be separated. Accordingly, when the goods (A) are leaked by theft, they are installed at the entrance and electronically sensitive when passing through the gate with the built-in transmission and reception antenna. It detects the theft of goods by sensors and transmit / receive antennas, and alerts you by theft.

On the other hand, in the case where the goods A are normally sold, when the separator 8 made of magnet is positioned around the rocker body 1 as shown in FIG. 1B, the pusher 4 and the locking balls 3 are separated from the separator 8. By moving along the inclined surface of the tapered cover 2 while compressing the spring 5 by the magnetic force of the locking ball 3 is released from the neck portion 6a of the fixing pin 6 and the fixing pin ( The restraint of 6) is released, thereby removing the fixing pin 6 from the rocker body 1 to remove the article antitheft device from the article A. Then, no signal is detected at the gate in which the transmission and reception antennas of the entrance and exit are built. The remaining reference numeral 7 is a head of the fixing pin 6.

However, such a conventional product anti-theft device has a problem that the assembly productivity is lowered due to the complicated structure.

In addition, it is widely known that a separator 8 employing a magnet can release the lock in the longitudinal direction of the fixing pin 6, so that some consumers can use the magnet to release the fixing pin 6. This is frequently stolen.

In addition, since the cover 2 is made of a magnetic material such as iron, the product antitheft device having the structure as described above has a cover 2 when the product antitheft device is removed from the product A by a separator 8 having magnetic force. There is a problem in that the locking ball (3) is entangled in the cover (2) is magnetized, and this causes the locking ball (3) is not moved smoothly and the fixing pin (6) is not easily separated. .

The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide an improved product anti-theft device for improving the assembly productivity with a simple structure.

Another object of the present invention is to provide a product anti-theft device that is not easy to remove the fixing pin by employing a double locking portion.

Another object of the present invention is to provide a product anti-theft device that allows the locking pin to be easily separated from the upper and lower tags by removing the locking ball from the cover when the product is removed from the product.

The present invention to achieve the above object is provided with a tag body with an electronic sensitive sensor and a fixing pin which is inserted into the first hole in the upper part of the tag body through the product fixed, the fixing pin by a first separator having a magnetic force An article anti-theft device for removing a product from a tag body and a tag body, comprising: a first lock portion configured to lock the fixing pin in one direction with respect to the tag body, wherein the first lock portion is predetermined with the first hole in the tag body. The second hole is fixed in the spaced apart position and the fixing pin passes through the fixing plate formed coaxially with the first hole, and between the tag body and the fixing plate in the direction perpendicular to the coupling direction of the fixing pin A moving plate of a magnetic material provided to be capable of being formed and having a long hole connected so that the diameter of the large diameter portion and the small diameter portion is gradually reduced in the moving direction thereof; The small diameter portion of the copper plate is provided with a first spring for imparting an elastic force to be coaxial with the second hole, the fixing pin is formed in the outer peripheral surface of the engaging jaw of a predetermined interval, the elastic force of the first spring The locking jaw of the fixing pin is locked to the edge of the small diameter portion of the movable plate, and the movable plate is moved by the magnetic force of the first separator to be separated through the large diameter portion.

In addition, the present invention device further comprises a second locking portion for locking the fixing pin in the other direction with respect to the tag body, the second locking portion is located in the lower portion of the fixing plate is accommodated in the tag body and the top is open A lower cover, an upper cover coupled to an upper portion of the lower cover and having a hole coaxial with the second hole on an upper surface thereof, the upper cover gradually expanding in a downward direction, a second spring accommodated in the lower cover, and the second cover; 2 movable spring seated on the upper end of the movable body, and seated on the upper surface of the movable body and accommodated in the upper cover, the locking balls of the magnetic material, and located on the upper surface of the locking ball, the upper end through the hole of the upper cover A hollow pusher is exposed and the fixing pin penetrates, and a second separator having a magnetic force to move the locking balls to the lower end side of the upper cover Thus, when the locking balls are positioned at the lower end of the upper cover by the second separator, the locking of the fixing pin is released, and the locking ball is positioned at the upper part of the upper cover by the restoring force of the second spring. When the locking jaw of the fixing pin is characterized in that the locking ball to be locked.

According to the above feature of the present invention, the prevention device of the present invention enables locking and unlocking of the fixing pin by a moving plate having a long hole, thereby simplifying the structure of the apparatus, and using the second separator to determine the direction of engagement of the fixing pin. It provides magnetic force in the perpendicular direction so that the locking pin can be released so that the locking pin cannot be unlocked easily.When removing it from the product, the locking ball does not get tangled on the top cover of the nonmagnetic material or get tangled together. Therefore, the unlocking operation of the fixing pin becomes smooth.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Referring to Figures 2 to 7 showing an embodiment of the anti-theft device of the present invention, it is installed in the store entrance and reacts with the transmission and reception antenna when passing through a gate (not shown) with a built-in transmission and reception antenna And a fixing pin 40 inserted into and fixed to the first hole 11 of the upper part of the tag body 10 through the tag body 10 in which the electromagnetic sensitive sensor S is built, The first separator 50 having a magnetic force has a structure that allows the fixing pin 40 to be removed from the product A and the tag body 10.

The anti-theft device of the present invention includes a first locking part 20 for locking the fixing pin 40 in one direction with respect to the tag body 10.

As shown in FIGS. 6 to 7, the first locking part 20 is fixed at a position spaced apart from the first hole 11 by a predetermined distance in the tag body 10 and the fixing pin 40 passes. A fixing plate 14 having a second hole 15 formed coaxially with the first hole 11 and a direction in which the fixing pin 40 is coupled between the tag body 10 and the fixing plate 14. A movable plate 12 of a magnetic material provided to be slidably movable in a direction perpendicular to the long hole and having a long hole 13 connected to the diameter of the large diameter portion 13a and the small diameter portion 13b to gradually decrease in the movement direction thereof, and the movement The small diameter part 13b of the board 12 is provided with the 1st spring 16 which imparts elastic force so that it may be located coaxially with the said 2nd hole 15. As shown in FIG.

The operation of the first locking portion 20 is as follows.

As shown in FIG. 5, the locking pins 41 are formed on the outer circumferential surface of the fixing pin 40 by the elastic force of the first spring 16 as shown in FIGS. 3 and 6. The locking jaw 41 of the moving plate 12 is locked to the edge of the small diameter portion 13b of the moving plate 12, and the moving plate 12 is driven by the magnetic force of the first separator 50 as shown in FIGS. 4 and 7. ) Is moved to the right to be separated through the large diameter portion (13a).

The anti-theft device of the embodiment of the present invention, the fixing pin 40 further comprises a second locking portion 30 for locking the tag body in the other direction, the second locking portion 30 is the Located in the lower portion of the fixing plate 14 is accommodated in the tag body 10 and the upper cover is open, the upper cover is coupled to the upper portion of the lower cover 31 and the second hole 15 and the upper surface An upper cover 32 having a coaxial hole 32a and gradually expanding in a downward direction, a second spring 36 accommodated in the lower cover 31, and an upper end of the second spring 36. A moving body 35 seated on the movable body 35, seated on an upper surface of the movable body 35, accommodated in the upper cover 32, four locking balls 33 of a magnetic body, and the locking ball 33 of the movable body 35. Located in the upper surface of the hollow through the upper end is exposed to the outside through the hole (32a) of the upper cover 32 and the fixing pin 40 The pusher 34 and the second separator 60 having magnetic force for moving the locking balls 33 to the lower end side of the upper cover 32 are provided.

The upper cover 32 has a tapered shape of the upper and lower light beams, the diameter of which increases toward the opening so as to secure the flow space according to the positional change in the locking balls 33.

In addition, the central space formed by each of the locking balls 33 is configured smaller than the diameter of the fixing pin (40). The locking ball 33 is preferably made of a magnetic material, but may be made of a synthetic resin such as a nonmagnetic metal or a high strength plastic.

The second locking part 30 is released from the locking pins 40 when the locking balls 33 are positioned at the lower end of the upper cover 32 by the second separator 60, When the locking ball 33 is positioned above the upper cover 32 by the restoring force of the second spring 36, the locking jaw 41 of the fixing pin 40 is connected to the locking ball 33. It is supposed to be locked.

In particular, the second locking portion 30 is the upper cover 32 and the movable body 35 is made of a non-magnetic material, preventing the magnetization of the upper cover 32, so that the locking ball 33 during the unlocking operation It is prevented from being attached to the upper cover 32, the anti-theft can be prevented by making the unlocking operation only when the magnetic force of the second separator 60 is strong, and the unlocking operation is smooth.

In addition, both the upper cover 32 and the movable body 35 may be formed of a magnetic material. In this case, even if the magnetic force of the second separator 60 is weak, the unlocking operation may be smoothly performed. The movable body 35 may be selected and configured as a magnetic body or a nonmagnetic body.

The operation of the second locking portion 30 is as follows.

2, 3 and 8, when the fixing pin 40 is inserted through the first and second holes 11 and 15, the fixing pin 40 enters between the locking balls 33. The locking ball 33 and the movable body 35 are lowered by compressing the second spring 36 by the entry force. At this time, since the locking balls 33 are positioned at the lower portion (expansion space) of the upper cover 32, the locking balls 33 are positioned at the locking jaw 41 of the fixing pin 40 and at the same time the second spring 36 It can be locked by the restoring force.

In addition, as shown in FIG. 4, when the locking balls 33 are positioned at the lower end of the upper cover 32 by the second separator, the distance between the locking balls 33 may be widened, thereby fixing the locking balls 33. The locking of the pin 40 is released. At this time, since the upper cover 32 is formed of a nonmagnetic material and is not magnetized by the magnetic force of the second separator 60, the locking ball 33 is not attached to the locking release operation.

The upper cover 32 and the movable body 35 may be selected as a magnetic material or a non-magnetic material. When the upper cover 32 and the movable body 35 are both formed of a non-magnetic material, the second separator 60 may be released for unlocking. ), The magnetic force must be strong, and when the upper cover 32 and the movable body 35 are both formed of a magnetic body, even when the magnetic force of the second separator 60 is all smaller than that of the nonmagnetic material, the unlocking operation can be smoothly performed. .

The anti-theft device as shown in FIG. 4 allows the first and second separators 50 and 60 to approach each other in a different direction to release the locking pin 40.

As described above, the anti-theft device of the present invention may prevent theft of goods by using only the first locking part 20, and simultaneously theft of goods by using the first locking part 20 and the second locking part 30 simultaneously. Can be prevented.

The present invention as described above is not limited to the above embodiments without departing from the spirit and scope of the present application can be practiced with a number of modifications.

As described above, according to the present invention, the locking pin can be locked and unlocked by the movement of the moving plate having the long hole, thereby simplifying the structure.

In addition, since the locking ball is not attached to the upper cover of the nonmagnetic material when the fixing pin is removed from the tag body, it can be easily separated.

In addition, the locking pin is released by simultaneous operation of the first and second separators having the first and second locking parts to provide magnetic force in different directions, thereby preventing theft of goods by preventing the fixing pin from being removed. You can prevent it.

Therefore, the present invention has a very excellent effect of greatly improving the reliability and ease of use of the merchandise anti-theft device.

Claims (6)

A tag main body having an electronic sensor and a fixing pin penetrating the product and inserted into the first hole in the upper part of the tag main body, and having a magnetic separator to remove the fixing pin from the product and the tag main body. In the anti-theft device, It has a first locking portion for locking the fixing pin 40 in one direction with respect to the tag body, The first locking portion is fixed at a position spaced apart from the first hole 11 by a predetermined distance in the tag body 10 and the second hole 15 through which the fixing pin 40 passes is the first hole 11. ) And a fixed plate 14 formed coaxially with, The large diameter portion 13a and the small diameter portion 13b are provided between the upper portion of the tag body 10 and the fixing plate 14 so as to be slidably movable in a direction perpendicular to the coupling direction of the fixing pin 40. The moving plate 12 of the magnetic body formed with the long hole 13 connected so that the diameter of the gradually reduced, A first spring 16 for imparting an elastic force such that the small diameter portion 13b of the movable plate 12 is coaxial with the second hole 15, The fixing pin 40 is formed on the outer peripheral surface of the engaging jaw 41 of a predetermined interval, The locking jaw 41 of the fixing pin 40 is locked to the edge of the small diameter portion 13b of the movable plate 12 by the elastic force of the first spring 16, and the magnetic force of the first separator 16 The anti-theft device, characterized in that the moving plate 12 is moved to be separated through the large diameter portion (13a). According to claim 1, further comprising a second locking portion for locking the fixing pin 40 in the other direction with respect to the tag body, The second locking portion is located in the lower portion of the fixing plate 14 is accommodated in the tag body 10 and the upper cover 31, the upper open; An upper cover 32 coupled to an upper portion of the lower cover 31 and having a hole 32a coaxial with the second hole 15 formed on an upper surface thereof and gradually expanding in diameter downward; A second spring 36 accommodated in the lower cover 31; A movable body 35 mounted on an upper end of the second spring 36 and movable; Seated on the upper surface of the movable body 35 and accommodated in the upper cover 32 and the locking balls 33 of the magnetic material, A hollow pusher 34 positioned on an upper surface of the locking ball 33 and having an upper end exposed through the hole 32a of the upper cover 32 and through which the fixing pin 40 passes; With a second separator having a magnetic force to move the locking balls 33 to the lower end side of the upper cover 32, When the locking balls 33 are positioned at the lower end of the upper cover 32 by the second separator, the locking of the fixing pin 40 is released and the locking is performed by the restoring force of the second spring 36. Anti-theft device, characterized in that the locking jaw (41) of the fixing pin (40) is locked to the locking ball (33) when the ball (33) is located above the inside of the upper cover (32). 3. The anti-theft device according to claim 2, wherein the upper cover (32) and the movable body (35) are made of a nonmagnetic material. The product anti-theft device according to claim 2, wherein the upper cover (32) and the movable body (35) are made of magnetic material. 3. The anti-theft device according to claim 2, wherein the upper cover (32) is made of a magnetic material, and the movable body (35) is made of a nonmagnetic material. The device of claim 2, wherein the upper cover (32) is made of a nonmagnetic material, and the movable body (35) is made of a magnetic material.

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