KR100372928B1 - Electronic Article Surveillance - Google Patents

Abstract

The present invention relates to a product anti-theft device. The present invention is a lower tag with a built-in electronic sensor, an upper tag to be assembled with the lower tag, a fixing pin that is inserted into the assembly hole of the upper tag through the product, a cap-shaped cover having a tapered cross section, the cover having a flange at one end Assembled from the inside of the assembly hole and the upper side of the assembly hole of the guide, the fixing pin penetrates, with a flange at one end is elastically biased toward the guide, the pusher through which the fixing pin penetrates, interposed between the guide and the pusher and the fixing pin outer periphery It consists of a plurality of locking balls into which the neck portion of the body enters, a spring for biasing the pusher toward the guide and a housing of the lower tag containing the above elements.

According to the present invention, the locking ball is not entangled in the cover or tangled with each other when removed from the product, and even when the inner circumferential surface of the cover and the locking balls and the fixing pin are tightly engaged when the locking ball is moved in the semi-elastic direction, the guide does not lock the locking ball. The pin can be easily removed and reinserted from the upper and lower tags, as well as erroneous insertion of the fixing pin out of the center of the locking balls.

Description

Product Antitheft Device {Electronic Article Surveillance}

The present invention relates to a device for preventing the theft of various goods displayed in the store, in particular, when the goods are smuggled out by being directly mounted on the display goods are installed at the entrance when passing through the gate with the built-in transmission and reception antenna It relates to a product theft prevention device for detecting theft of goods.

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 with a certain size may have a separate product supervisor, or hire more salesmen than necessary for the guidance and monitoring of the product, which will increase the product price and store maintenance cost. .

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.

On the other hand, although a closed-circuit (CC) camera is installed as a method for preventing theft of goods, this also has a burden of additional costs and cannot be a fundamental solution due to the characteristics of the camera, such as the existence of blind spots and follow-up.

As a result, a product theft prevention device has appeared that can manage a store without fear of theft with a minimum of salesmen and cashiers for the guidance of products, regardless of the size of the store.

Figure 1 shows an example of such a product theft prevention device. It is composed of a rocker body (locker body) 1, in which an electromagnetic sensor (not shown) is built, and a fixing pin 2 which is inserted into and fixed to the rocker body 1 through the product A. 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 fixed. 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.

By the way, since the cover 2 is made of magnetic material, such as iron, the conventional product anti-theft device removes the product anti-theft device from the goods A by the magnetic separator, and the cover 2 magnetizes. As a result, the locking balls 3 are entangled in the cover 2, which causes the locking balls 3 to not move smoothly, so that the fixing pins 6 are not easily separated.

In addition, when the locking ball 3 is moved in the semi-elastic direction during removal, a space is formed between the bottom surface of the cover 2 and the locking ball 3, and the fixing pin 6 is pulled out of the rocker body 1. There is a high possibility that the locking balls 3 get entangled by their attractive force, which causes the locking balls 3 to close the assembly holes 2a of the cover 2 upon return by the spring 5. There was a problem. In this case, when the fixing pin 6 is inserted again, it is blocked by the locking ball 3 and the fixing pin 6 is not inserted well, so that it is not necessary to apply excessive force, and the fixing pin 6 is made of the locking balls 3. The case is inserted off the center, which caused a serious problem that the fixing pin 6 is easily separated even without the separator 8.

In addition, when the locking ball 3 is moved in the semi-elastic direction, the alignment of the locking balls 3 is not good, and the inner circumferential surface of the cover 2 and the locking balls 3 and the fixing pin 6 may be tightly engaged. Therefore, the fixing pin 6 does not fall out of the product antitheft device when the product antitheft device is removed from the product A by the separator 8.

The present invention has been invented in view of the above-described conventional problems, and can be easily separated from the upper and lower tags by preventing the locking ball from tangling to the cover when it is removed from the product, and the locking ball is semi-elastic. When the inner circumferential surface of the cover and the locking balls and the fixing pin is tightly engaged when moving in the direction, the guide hits the locking ball, thereby providing a product theft prevention device that can easily separate the fixing pin from the upper and lower tags. There is this.

Another object of the present invention, it is possible to prevent the closing of the cover assembly hole by the entanglement of the locking ball when the fixing pin is removed, thereby making it easy to reinsert the fixing pin as well as the fixing pin to the center of the locking ball It is to provide a product theft prevention device that can reliably prevent the misinsertion of deviation.

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

2 is an exploded perspective view showing a product anti-theft device of the present invention,

3 is a cross-sectional view of the combined state of the anti-theft device of the present invention of FIG.

4A and 4B are cross-sectional views sequentially showing the operating state of the present invention.

<Explanation of symbols for main parts of drawing>

10: lower tag 13: upper tag

12: cover 15: pusher

16: spring 17: guide

18: rocking ball 20: fixed pin

21: head 22: pin

23: neck (of pin) 30: separator

A: Commodity S: Electronic Sensor

In order to achieve the above objects, the anti-theft device according to the present invention includes a lower tag having an electronic sensitive sensor, an upper tag assembled with a lower tag, and fixed to be inserted into an assembly hole of the upper tag through the product. An article anti-theft device having a pin and removed from the article by a magnetic separator, comprising: a cap-shaped cover having a tapered cross section; A guide having a flange at one end and assembled at an inner side to an assembling hole of the cover and an assembling hole of the upper tag, and having a fixing pin penetrating therein; An elastic bias toward the guide with a flange at one end and a pusher through which the fixing pin penetrates; A plurality of locking balls which are interposed between the guide and the pusher and a part of the body enters the neck portion of the fixing pin outer periphery; A spring for biasing the pusher toward the guide; And a housing of the lower tag incorporating the above elements.

According to one preferred feature of this invention, the cover is made of nonmagnetic material and the guide and pusher are made of magnetic material.

Accordingly, the present invention provides a guide even when the locking ball is not entangled or entangled with the cover when removed from the product, even when the inner circumferential surface of the cover and the locking balls and the fixing pin are tightly engaged when the locking ball is moved in the semi-elastic direction. The locking ball can be struck so that the fixing pin can be easily removed and reinserted from the upper tag and the lower tag, and the fixing pin can be reliably prevented from being misinserted out of the center of the locking ball. It is effective in improving the ease of use.

Such specific features and other advantages of the present invention will become more apparent from the following description of the preferred embodiments with reference to the accompanying drawings.

Figure 2 is an exploded perspective view showing a product anti-theft device of the present invention, Figure 3 is a cross-sectional view of the combined state of the anti-theft device of the present invention.

2 and 3, the anti-theft device of the present invention is installed in the store entrance and the electronic sensor (S) that reacts with the transmission and reception antennas when passing through the gate (not shown) with the transmission and reception antennas (not shown) (S) ) Is built with a lower tag 10, an upper tag 13 to be assembled with the lower tag 10 and a fixing pin 20 that is inserted into the upper tag 13 through the product (A).

The lower tag 10 includes a substantially cup-shaped housing 11, and a cap-shaped cover 12 having a tapered cross section is accommodated in the housing 11, and an upper tag for shielding the inside of the opening of the housing 11. (13) is combined. The cover 12 has a flange 12b at its edge and is seated on the support jaw 11a formed at the inner circumferential middle portion of the housing 11, and is fixed in the housing 11 by being shielded by the upper tag 13. The working space 19 is formed together with the housing 11.

The cover 12 has a tapered shape of upper and lower light having a diameter larger toward the opening, that is, the upper part is opened and the lower part is opened, so as to secure a flow space according to a change in position in the locking balls 18 described later. An assembly hole 12a through which the fixing pin 20 can penetrate is formed. The cover 12 is preferably composed of a nonmagnetic material for the smooth movement of the locking ball (18).

An assembly hole 13a through which the fixing pin 20 penetrates in the center of the upper tag 13 is formed coaxially with the assembly hole 12a of the cover 12.

In the assembly hole 12a of the cover 12, a guide 17 composed of a tube is assembled from the inside so that the fixing pin 20 can penetrate according to the feature of the present invention. One end of the guide 17 is provided with a flange 17a for preventing the separation from the cover 12 and at the same time supporting the locking balls 18 described later. The guide 17 is inserted through the cover 12 into the assembly hole 13a of the lid 13, and is preferably made of a magnetic material.

In addition, the inner side of the cover 12, that is, the operating space 19 is composed of a tube so that the fixing pin 20 can penetrate, the pusher 15 for pushing the locking ball 18 to the guide 17 to be described later is Is installed. A flange 15b is formed at one end of the pusher 15 so as to face the flange 17a of the guide 17, and the pusher 15 is elastically biased toward the guide 17 between the flange 15b and the housing 11. Spring 16 is installed. The pusher 15 is preferably made of a magnetic material, and the assembly is coaxial with the assembly hole 12a of the cover 12 through which the fixing pin 20 penetrates and the assembly hole 17a of the guide 17. It has a hole 15a.

On the other hand, between the pusher 15 and the guide 17 is interposed with four locking balls 18 for fixing the fixing pin 20 in the inserted position to the neck portion 23 of the outer circumference of the fixing pin 20 to be described later. . At this time, the central space formed by each of the locking balls 18 is configured smaller than the diameter of the fixing pin (20). The locking ball 18 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. This is because the guide 17 and the pusher 15 are made of a magnetic material and can move the locking ball 18 upon removal by the separator 30 having magnetic force. Thus, the guide 17, the pusher 15 and the locking ball 18 are moved together when removed by the separator 30 so that the locking ball 18 does not get tangled in the cover or entangled with each other when removed from the product. When the ball 18 is moved in the semi-elastic direction, even if the inner circumferential surface of the cover 12 and the locking balls 18 and the fixing pin 20 are tightly engaged, the guide 17 strikes the locking balls 18 and is fixed. The pin 20 can be easily separated from the upper tag 13 and the lower tag 10.

The fixing pin 20 has a pin 22 inserted into the upper tag 13 on one side of the head 21, and a neck portion into which a part of the locking ball 18 enters a predetermined portion of the outer circumference of the pin 22. 23 is formed.

Next, the operation of the anti-theft device according to the present invention configured as described above will be described with reference to Figure 4a and 4b.

First, the fixing pin 20 is inserted into the product (A) to be displayed in the store as shown in Figure 4a. Then, the head 21 of the fixing pin 20 is caught on one side of the article A, and only the pin 22 penetrates the article A and protrudes to the back side thereof. Thus, the pin 22 which penetrated the goods A is plugged into the goods anti-theft prevention device which consists of the lower tag 10 and the upper tag 13. As shown in FIG. That is, the pin 22 is fitted into the assembly hole 17a of the guide 17 inserted into the assembly hole 13a of the upper tag 13 and the assembly hole 12a of the cover 12. When the pin 22 passes through the guide 17, since the diameter of the pin 22 is larger than the space formed by the locking balls 18, the tip of the pin 22 comes into contact with the locking balls 18. 18 are pushed back slightly while compressing the spring 16 by the insertion force of the fixing pin (20). Then, the locking balls 18 are pushed simultaneously in the compression direction of the spring 16 by the cover 12 having the tapered cross section, so that the space therebetween is enlarged, so that the pin 22 is interposed between the locking balls 18. Will pass.

After the pin 22 passes between the locking balls 18 and the neck portion 23 enters the inside of the cover 12, the pusher 15 is locked by the restoring elasticity of the spring 16. The balls 18 are moved back toward the guide 17 to return to the initial position. Then, a part of the locking balls 18 enters the neck portion 23 of the pin 22, thereby fixing the position of the fixing pin 20 in the inserted state.

In this state, the fixing pin 20 and the upper and lower tags 10 and 13 cannot be separated. Therefore, when the goods A are leaked due to theft, the transmitting and receiving antenna and the lower tag of the gate installed at the entrance and exit ( The electronic sensor (S) built in 10) detects this and gives an alarm, thereby preventing unauthorized theft of goods A.

On the other hand, after the goods A are normally sold and the payment is completed, the separator 30 having magnetic force is positioned around the lower tag 10 attached to the goods A at the checkout counter as shown in FIG. 4B. Let's do it. Then, the pusher 15 and the guide 17 are moved toward the tip of the pin 22 while compressing the spring 16 by the magnetic force of the separator 30 with the locking balls 18 interposed therebetween, thus locking. The balls 18 are pushed out simultaneously in the tip direction of the pin 22 by the tapered surface of the cover 12, thereby releasing the restraint of the pin 22 from the neck 23 of the pin 22. FIG. At this time, the locking balls 18 are located within a predetermined interval formed by the pusher 15 and the guide 17 and move simultaneously with them, as well as the cover 12 is made of a non-magnetic material, as the conventional cover 12 It is moved very smoothly without being attached to, the guide 17 is made of a magnetic material so that the guide 17 hits the locking balls 18 by the separator (30).

As the locking balls 18 move in this way, when the restraint of the pins 22 is released, the fixing pins 20 are extracted from the upper and lower tags 10 and 13 to separate them. In this case, since the locking balls 18 are still interposed between the pushers 15 and the guides 17, even when the fixing pins 20 are removed, the balls are not entangled with each other as in the prior art. Can be maintained as it is, even if the inner circumferential surface of the cover 12 and the locking balls 18 and the fixing pin 20 is tightly engaged, the guide 17 hits the locking balls (18) to tag the fixing pin 20 (13) and the lower tag 10 can be easily separated. After the fixing pin 20 is removed from the upper and lower tags 10 and 13 and removed from the product A, no signal is detected at the transmitting and receiving antenna of the gate installed at the entrance and exit of the product A. It becomes possible.

Meanwhile, when the separator 30 is removed after the fixing pin 20 is removed, the pusher 15, the guide 17, and the locking balls 18 are returned to the initial position by the restoring elasticity of the spring 16. At this time, the locking balls 18 are also interposed between the guide 17 and the pusher 15 to be returned at the same time while maintaining the alignment state, accordingly entangled with each other or biased to one side of the guide 17 It quickly returns without any defect such as blocking the assembly hole 17a. Therefore, even when the fixing pin 20 is reinserted very smoothly without clogging, the fixing pin 20 is incorrectly inserted out of the center of the locking ball 18 is no more bad.

As described above, according to the present invention, when the fixing pin is removed from the upper and lower tags, the locking ball does not get tangled in the cover or is entangled with each other, and the inner circumferential surface and the locking ball of the cover are moved when the locking ball is moved in the semi-elastic direction. Even though the field and the fixing pins are tightly engaged, the guide hits the locking ball so that the fixing pins can be easily separated from the upper tag and the lower tag. In addition, since the locking balls are not disturbed by maintaining their initial alignment while moving, the reinsertion is easy as well and the erroneous insertion of the locking pins out of the center of the locking balls is reliably prevented.

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 (4)

A lower tag having a built-in electronic sensor, an upper tag assembled with the lower tag, and a fixing pin penetrating the product and inserted into the assembly hole of the upper tag, and the fixing pin is removed from the product by a magnetic separator. In the anti-theft device to remove, A cap-shaped cover having a tapered cross section; A guide having a flange at one end and assembled at an inner side to an assembling hole of the cover and an assembling hole of an upper tag, and having a fixing pin penetrating therein; A pusher elastically biased toward the guide with a flange at one end and through which the fixing pin passes; A plurality of locking balls which are interposed between the guide and the pusher and a part of the body enters the neck portion of the fixing pin outer circumference; A spring for biasing the pusher toward the guide; And And a housing of the lower tag containing the elements therein. The product anti-theft device according to claim 1, wherein the cover is made of a nonmagnetic material. The device of claim 1, wherein the guide is made of a magnetic material. The product anti-theft device according to claim 1, wherein the pusher is made of a magnetic material.