JPH02101600A - Shoplifting preventing device - Google Patents

Abstract

PURPOSE:To easily and surely perform the operation of operation cancellation by constituting a canceling means for an alarm of an attachment piece provided with a detecting surface on which an magnetic sensor is arranged and a canceling piece provided with a canceling surface on which a magnetic dot corresponding to the magnetic sensor is arranged. CONSTITUTION:The attachment piece 1 is joined to a commodity at its joining surface 2 by using a double-faced adhesive tape, etc. Then, the button 4 of a push button switch is pushed in, and the switch is turned off. After that, the attachment piece 1 is reset, and a shoplifting detecting means and an alarm generating means are operated so that the occurrence of shoplifting can be informed. On the other hand, in order to remove the piece 1 when desire to buy the commodity arises, at first, the canceling surface 7 of the canceling piece 6 is brought into contact with the magnetic detecting surface 5 of the piece 1 attached to the commodity. When the surface 5 is slided from the edge of the surface 7 by a guide 10, the arrangement of the magnetic dot of the surface 7 coincides with the arrangement of the magnetic sensor of the surface 5, and the operation of the alarm generating means is canceled.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a shoplifting prevention device that detects the occurrence of shoplifting and issues an alarm by attaching an attachment piece to each product sold at a store.

[Prior Art] The shoplifting prevention device described above includes a small rectangular parallelepiped-shaped attachment piece that is attached to products to be prevented from being shoplifted in various stores, and a battery case that is inserted and locked into the attachment piece. It consists of a battery case drawer for pulling out the battery case after releasing the lock.

The attached piece includes various sensors for detecting shoplifting of products.

- is a button switch that protrudes freely from the surface of the accessory piece that is connected to the product, and is configured to turn on the alarm buzzer when the button switch protrudes. When you try to pull the accessory piece away from the product, the button switch sticks out and turns on the alarm buzzer.

Second, there is a receiver disposed on the attached piece that receives only radio waves of a specific frequency, and is configured to turn on the power of the alarm buzzer when the radio waves are received. By emitting radio waves of the specific frequency outside the exit of a store, etc., when the product with the attached piece is taken out of the exit of the store, the receiver receives the radio wave, Turn on the alarm buzzer.

On the other hand, the battery case drawer has a groove in the center wide enough to insert the accessory piece, and the accessory piece is inserted into the upper air groove from the side opposite to the surface to be joined with the product. When the battery case drawer is inserted and the operating lever on the outside of the battery case drawer is moved in a certain direction, in the first step, the tongue pieces protrude from both sides of the groove and are inserted into the attachment piece through the slits on both sides.
This unlocks the battery case, and then, in the second step, the draw-out protrusion moves the battery case in an arched manner in the pull-out direction. Note that, when the attachment piece is first inserted into the groove, the pull-out protrusion is aligned so that it is inserted into the locking hole of the battery case from the elongated hole for pulling out the attachment piece.

[Problems to be Solved by the Invention] With conventional shoplifting prevention devices, it is extremely troublesome to release the warning operation in order to remove the attached piece from the product when the product is sold.

First, the battery case is inserted into the accessory piece joined to the product, and the means for detecting removal from the product using the button switch and other detection means are in operation. Therefore, if an attempt is made to remove the attachment, the alarm buzzer will operate and issue an alarm.

Therefore, before removing the attachment piece from the product, it is necessary to remove the battery case from the attachment piece and stop the operation of the detection means and the like. However, as described above, the battery case is locked in the attachment piece and cannot be removed unless this is released.

Therefore, it is necessary to insert the accessory piece attached to the product into the groove of the battery case drawer in advance and operate the operating lever to pull out the battery case.

However, this operation is quite cumbersome, and often results in the attachment being separated from the product before the battery case is pulled out, which may cause the alarm buzzer to sound unnecessarily.

That is, when inserting the accessory piece into the groove, it is necessary to insert the tongue piece into the slit in a positional relationship that allows the tongue piece to be inserted accurately into the slit, and to ensure that the pull-out protrusion of the accessory piece is accurately inserted into the locking hole of the battery case. Ensuring that both are inserted into the
Since this involves engagement of a part that is not visible to the operator, it does not go well. Furthermore, if this operation does not go well, it will take time to sell the product, resulting in customers being made to wait unnecessarily. Furthermore, as mentioned above, the alarm buzzer is often set off by mistake during this operation, which can surprise or distrust the customer, or make the operator feel uneasy about the operation. Therefore, it is not suitable for practical use.

The present invention aims to solve the above problems.

[Means for Solving the Problems] The gist of the configuration of the present invention is to configure an attachment piece that can be detachably attached to a product, and to attach the attachment piece to the attachment piece and related components. comprising a shoplifting detection means for detecting a shoplifting start state occurring in the attached product; and an alarm generation means for issuing an alarm upon receiving a signal from the shoplifting detection means indicating that shoplifting has been detected; In a shoplifting prevention device that has a separate release means for stopping, the release means is composed of means A disposed on the attachment piece and eight means disposed on a release piece held by the operator; As a means, one surface of the attached piece is used as a detection surface, and magnetic sensors are arranged along the detection surface to detect a dot-shaped arrangement of magnetism with or without magnetism or a dot-shaped arrangement of magnetism with different polarities, and an operation inhibiting means configured to stop the operation of the alarm generating means until a reset signal is input when the detection data of the magnetic sensor matches predetermined reference data; As a means, one surface of the release piece is a release surface, a guide is configured to guide the detection surface of the attachment piece to accurately face the release surface, and an array of magnetic sensors of the attachment piece is arranged on the release surface. This is a shoplifting prevention device that has a dot-like magnetic arrangement with or without magnetism or a dot-like magnetic arrangement with different polarities corresponding to the above.

In principle, the shape and dimensions of the attached piece are not limited to any particular one. However, since the device is intended to be attached to a product, it is desirable that it be as small as possible so that it does not get in the way and is easy to attach to the product. A small rectangular parallelepiped is suitable. Note that, for convenience of handling, the detection surface should be formed on the surface opposite to the surface to be joined with the product, and the aspect of the surface should correspond to the release surface of the release piece. Therefore, the detection surface is formed in the shape of a plane or an outer peripheral surface of a cylinder vertically divided.

In this case, naturally, the release surface of the release piece is also configured in a corresponding shape, that is, in the former case, it is a flat surface, and in the latter case, it is configured in a corresponding gutter-like concave shape.

Further, the above-mentioned shoplifting detection means and alarm generation means are not limited to specific means. The former may have any configuration as long as it can detect the occurrence of shoplifting, and the latter may have any configuration as long as it notifies the occurrence of shoplifting and surprises the shoplifter. Of course, it is preferable that they be as compact as possible, since they are all arranged in small attachment pieces and related components.

First, shoplifting detection means include means for detecting when an attempt is made to remove an accessory attached to a product, or means for detecting when an attempt is made to take a product with an attached attachment out of a store. Just configure it.

For example, a button switch is provided on the joint surface of the attachment piece with the product to turn on the power to the alarm generating means when the attachment piece is protruded, so as to detect that the attachment piece is removed from the product.

Or connect a resistor to the positive side of the power supply, connect a plug (or socket) to the resistor, attach the socket (or plug) to the plug (or socket) in a removable manner, and then ground the socket. The alarm generation means is connected to the power source so that the alarm generating means is turned on by a voltage increase at a point between the resistor and the plug. In this way, it is detected that the plug and socket have been pulled out.

In this case, the conductive wires connected to the above-mentioned plugs and sockets should be pulled out from appropriate positions to the outside of the attached piece, pass through appropriate parts of the target product, and be engaged with the above-mentioned sockets and plugs. By doing so, the accessory piece is attached to the product.

Or in addition to the above, when receiving radio waves of a specific frequency,
It constitutes a receiver that turns on the power of the alarm generating means, and when a product exits from the entrance of a store with the attached piece attached, it receives radio waves of the frequency radiated outside the entrance and generates an alarm. Turn on the power of the means.

The latter (9-alarm generating means) notifies store personnel when the start of shoplifting is detected by the above-mentioned shoplifting detection means, and also alerts the shoplifter to the possibility of running away with the items for some reason. It is fine as long as it creates a situation that makes it difficult. For example, a loud alarm buzzer, etc.

Furthermore, as described above, the A means of the release means is composed of a magnetic sensor disposed on the detection surface of the attached piece and an operation inhibiting means.

The configuration of the detection surface is as described above.

If the above magnetic sensor is small and has good performance,
Not limited to special ones. For example, a ζ-Hall element or a Hall IC may be used. For example, three magnetic sensors are arranged in series on the detection surface at appropriate intervals. For example, the two outputs on both sides are directly connected to the two inputs of the AND gate, and the central output is connected to the other input of the AND gate via an inverter. Of course, it goes without saying that various arrangements other than this may be selected.

The operation inhibiting means can be composed of, for example, the inverter that inverts the output of the central magnetic sensor, the AND gate, and a self-holding switch circuit whose output is set to H level by the H level output. However, in this way, if the magnetic sensors on both sides detect the presence of magnetism, and the central magnetic sensor detects the absence of magnetism.

H-level signals are present at the inputs of the AND gate, resulting in an H-level output.

The output of the AND gate is connected to the set input of the self-holding switch circuit as described above, and its output is used as a switch circuit for turning on and off the power of the alarm generating means, for example, for resetting a similar self-holding switch circuit. Connect to input. When the alarm generating means is an alarm buzzer as described above, the output of the latter self-holding switch circuit is connected to this, and the alarm buzzer is driven by its H level output. The set input of the latter self-holding switch circuit is connected to the output of an OR gate constituting the final stage of the target detection means.

Note that, as described above, it is also appropriate that the magnetic sensor is configured to detect a dot-shaped magnetic arrangement of different polarities.

Further, eight of the release means are, as described above, comprised of a release surface formed on one surface of the release piece, a guide, and a magnetic arrangement.

The release surface is as described above.

The guides are erected on both sides of the release surface in the width direction so that the detection surface of the attached piece can be easily guided to the release surface. The above-mentioned guide also allows this part to be used for grasping the release piece by hand.

Further, the release surface is formed with a dot-like array of magnetism present or absent, or a dot-like magnetism array of different polarities, corresponding to the arrangement of the magnetic sensors on the detection surface of the attached piece. For example, dots with magnetism, dots with no magnetism, and dots with magnetism are arranged in series on the release surface in this order, corresponding to the magnetic sensor that detects the arrangement of the presence or absence of magnetism.

[Function 1] The present invention is constructed as described above, and therefore, it can be attached to a product intended to prevent shoplifting at a store, etc., and used as described below.

First, the attachment piece is attached to the target product. If applicable, use double-sided adhesive tape, etc. to attach the joint surface to the target product. When this is adopted, the button switch is in a pressed state.

Thereafter, the shoplifting detection means and the alarm generation means are activated, and the products are displayed on the display shelf or other display area in a desired manner.

If someone tries to remove the accessory from the product or leaves the store with the accessory still attached, the shoplifting detection means will be activated to detect this and detect it. In response to the output of the signal, the alarm generating means operates to issue an alarm, informing those involved in the store of the occurrence of shoplifting, and warning the shoplifter.

On the other hand, if the customer wishes to purchase the product, the attached piece is removed from the product and provided. When removing the attachment piece, first, while it is attached to the product, its detection surface is brought into contact with the release surface of the release piece. It is preferable to contact the detection surface while sliding it from the edge of the release surface. In this way, the arrangement of magnetic dots on the release surface and the arrangement of magnetic sensors on the detection surface are
Since they match once while sliding, the operation of the alarm generating means can be canceled without fail.

Thus, according to the present invention, the operation of the alarm generating means can be easily canceled in a short time without increasing the waiting time for the customer.

[Example] An embodiment of the present invention will be described below based on the drawings.

As shown in FIG. 3, the attached piece l is constructed in a substantially rectangular parallelepiped shape. The flat upper surface is used as a joint surface 2, from which a button 4 of a normally closed push button switch 3 is projected.

On the other hand, the lower surface of the attached piece l is formed into a curved surface like the outer peripheral surface of a vertically divided cylinder, and this surface is used as the magnetic detection surface 5.

Further, as shown in the figure, a plate-shaped release piece 6 is separately constructed. The release piece 6 has an upper surface formed into a trough-like concave release surface 7 that corresponds exactly to the magnetic detection surface 5 of the attachment piece l. The release surface 7 has dots arranged in series at regular intervals depending on the presence or absence of magnetism. Magnets are embedded in both sides in the length direction to form magnetic dots 8, 8, and no magnet is embedded in the center to form a non-magnetic dot 9 due to the absence of magnetism. As shown in FIG. 3, guides 10.10 for guiding the magnetic detection surface 5 of the attached piece 1 to the release surface 7 are provided on both sides of the release surface 7 in the width direction.

As shown in Figure 1, the attached piece 1 includes a detection part It constitutes a release part Z that releases the operation of the alarm generation part Y when it is removed. Note that the detection section The release surface 7 includes magnetic dots 8.8 and non-magnetic dots 9.

First, the alarm generating section Y will be explained. As shown in FIG. 1, this comprises a buzzer 12 and a self-holding switch circuit 13 that drives the buzzer 12 with its output. The output of the detection section X is connected to the set input of this self-holding switch circuit 13, and the output of the cancellation section 2 is connected to the reset input.

The circuit details of the self-holding switch circuit 13 are as shown in FIG. One input of the two-person OR gate 14 is used as the set input of this self-holding switch circuit 13, and its output is connected to one input of the two-person AND gate 15. The output of the AND gate 15 is taken as the output of this self-holding switch circuit 13. At the same time, the above AND gate 15
The output of is connected to the other input of the OR gate 14 as a self-holding signal. Further, the input of the inverter 16 is used as a reset input of the self-holding switch circuit 13, and its output is connected to the other input of the AND gate 15.

Since the self-holding switch circuit 13 is a circuit as described above, when the detection section The output becomes H level and the buzzer 1
2 to generate a warning sound. Needless to say, the self-holding switch circuit 13 maintains the H-level output even if there is no output from the detection section , the buzzer 12 continues to sound.

As shown in FIG. 1, the detection section X is configured in an attached piece 11 except for a transmitter 11 that emits radio waves of a predetermined frequency.

There are three detection means in the detection section X.

- is a receiving means for receiving radio waves from the transmitter 11, which includes an antenna 17 and a tuning circuit 18, as shown in FIG.
and a rectifier circuit 19 that rectifies the received high frequency current. The output of the rectifier circuit 19 is connected to the - input of a three-person chaor gate 20 constituting the final stage of the detection section X.

The second is a push button switch 3 inserted between the positive side of the battery 21 and the other input of the OR gate 20. As described above, this push button switch 3 is a normally closed switch, and is disposed on the joint surface 2 of the attachment piece 1 with its button 4 exposed.

That is, the push button switch 3 is turned off when the attachment piece 1 is joined to the product.

3, a resistor 22 connected to the positive side of the battery 21 and another input of the OR gate 20, and the resistor 22;
It consists of a plug 23 and a socket 24 inserted into a circuit connected to the ground between the input terminal and the input of the OR gate 20.

The plug 23 and the socket 24 are configured to be removable,
These circuits shall be drawn out to the outside of the attachment piece l. Note that these are not shown in FIG.

Thus, whether the antenna 17 receives a predetermined radio wave,
When the button 4 of the pushbutton switch 3 is pushed out, or when the plug 23 and socket 24 are pulled out, one of the inputs of the OR gate 20 goes to the l) level, so its output goes to the H level.

Next, the release section Z will be explained.

This is done by making the magnetic detection surface 5 of the attached piece l correspond to the arrangement of the magnetic dots 8.8 and non-magnetic dots 9 arranged on the release surface 7 of the release piece 6, as shown in FIG. The magnetic sensors 25, 25, 25 are arranged in an array, the inverter 26 inverts the output of the central magnetic sensor 25, and the outputs of the magnetic sensors 25, 25 on both sides and the output of the inverter 26 are connected to special inputs. It consists of an AND gate 27 and a self-holding switch circuit 28 in which the output of the AND gate 27 is connected to a set input. The output of this self-holding switch circuit 28 is connected to the reset input of the self-holding switch circuit 13 of the alarm generator Y. Further, a reset input of the self-holding switch circuit 28 is connected to the battery 21 via a reset switch 29. Thus, when the magnetic detection surface 5 of the attached piece 1 is slid from the end onto the release surface 7 of the release piece 6, the arrangement of the magnetic dots 8.8 and the non-magnetic dots 9 becomes smaller than that of the magnetic sensor 25. 25.25
The inputs of the AND gate 27 are aligned at H level. In this way, the output of the AND gate 27 becomes H level at least momentarily, setting the self-holding switch circuit 28. As a result, the self-holding switch circuit 13 of the alarm generator Y is reset.

The specific configuration of the self-holding switch circuit 28 is the same as that of the self-holding snatch circuit 13.

Since this embodiment is configured as described above, it is used as follows.

First, the transmitter 11 is installed at a high place outside the entrance of the target store.

On the other hand, attachment pieces 1, . . . are attached one by one to the target product. The bonding surface 2 is bonded to the target product using double-sided adhesive tape or the like. In this way, the button 4 of the pushbutton switch 3 is pushed below the joint surface 2, and the switch is turned off.

Thereafter, the reset switch 29 of the release part Z of each attachment piece 1.1... is turned on momentarily to reset the self-holding switch circuit 28. That is, the output of the self-holding switch circuit 28 of the canceling section Z is lowered to the L level, and the self-holding switch circuit 13 of the alarm generating section Y can be set by the output of the detecting section X at the H level. In other words, the alarm generating section Y is brought into a state in which it can receive the output of the detecting section X. After doing so, the products are displayed in a desired manner on a required display shelf or other display area.

After this, if you try to remove the attached piece 1 from the product,
If an attempt is made to take the product out of the store with the attachment L still attached, it will be detected by the detection means of the detection section and warn shoplifters.

First, when the attachment piece 1 is removed from the product, the button 4 of the pushbutton switch 3 disposed on the joint surface 2 protrudes and turns on, inputting an H level signal to the corresponding input of the OR gate 20. In this way, the output of the OR gate 20 becomes H level, and the self-holding switch circuit 13 of the alarm generator Y is set, its output becomes H level, and the buzzer 12
This is something that leads to a sound. Even if the shoplifter hastily returns the attached piece 1, the self-holding switch circuit 13 maintains this state and the buzzer 12 continues to sound.

Next, when you leave the store with the attached piece l attached to the product, the radio waves of a predetermined frequency from the transmitter 11 placed at a high place outside are received through the antenna 17 and the tuning circuit 18, and the high frequency current is transmitted. The next rectifier circuit 19 rectifies the current and converts it into H level direct current. In this way, the H level DC is transmitted to the OR gate 2.
It is input to the corresponding input of o, and its output becomes H level. After this, the buzzer 1 of the alarm generating section Y is operated as described above.
2 will sound and an alarm will be activated.

On the other hand, if a customer wishes to purchase a product, of course,
The attached piece l is removed from the product before it is sold. In this case,
First, the magnetic detection surface 5 of the attachment piece 1 is brought into contact with the release surface 7 of the release piece 6 while the attachment piece 1 is attached to the product. It is preferable that the magnetic detection surface 5 be brought into contact with the release surface 7 while sliding it from the end thereof. In this way, the arrangement of the magnetic dots 8, 8 and the non-magnetic dots 9 on the release surface 7 and the magnetic sensor 25, 25 on the magnetic detection surface 5
．． Since the sequence of 25 matches at least once during the slide,
The operation of the alarm generating section Y can definitely be canceled. The arrangement of the magnetic dots 8.8 and non-magnetic dots 9 is as follows:
In this case, since the magnetic dots 8.8 sandwich the non-magnetic dots 9 between them, simply pressing the magnet against the magnetic detection surface 5 will not release the magnetic dots. Therefore, it cannot be easily canceled by shoplifters.

Magnetic dot 8 on release surface 7 with magnetic sensor 25.25.25
．． When the array of 8 and non-magnetic dots 9 is detected, the H level outputs from those on both sides are directly sent to the AND gate 2.
7, and from the central one, the output of level 3 is inverted to H level by the inverter 26 and input to the corresponding input of the AND gate 27. In this way, the output of the AND gate 27 becomes H level, and the self-holding switch circuit 28 is set. Thus, the output becomes H level, and the self-holding switch circuit 13 of the alarm generating section Y is reset. The output of the release section Z is
Since it is self-held, the self-holding switch circuit 13 of the alarm generation section Y continues to be in the reset state even if an output from the detection section X occurs.

After this, the attached piece l is removed from the product and sold.

In addition, the above-mentioned release operation simply causes the magnetic detection surface 5 of the attached piece 1 to
Since the release piece 6 only needs to be slid on the release surface 7, the operation is extremely simple and can be performed without making the customer wait. Furthermore, there are no malfunctions.

Furthermore, when attaching the attachment piece l to the product again, as described above, it goes without saying that after attaching it to the product, the reset switch 29 is turned on to reset the release operation of the release unit 2.

[Effects of the Invention] The present invention makes it possible to easily and reliably perform the operation of deactivating the alarm generating means, which is necessary when removing an attachment piece from a product. Therefore, there is no longer any need for customers to wait for this operation, and no false alarms are issued.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and Fig. 1 is a block circuit diagram showing an overview thereof, Fig. 2 is a block circuit diagram showing an overview of a self-holding switch circuit, and Fig. 3 is an attached diagram. It is a schematic perspective view showing the appearance of a piece and a release piece. l... Attachment piece, 2... Joint surface, 3... Push button switch, 4... Button, 5... Magnetic detection surface, 6...
・Release piece, 7...Release surface, 8...Magnetic dot, 9.
... Non-magnetic dot, 10... Guide, 11... Transmitter, 12... Buzzer 13.28... Self-holding switch circuit, 14.20... OR gate, 15.27.
...And gate, 16.26...Inverter, 17
... antenna, 18 ... tuning circuit, 19 ... rectifier circuit, 21 ... battery, 22 ... resistor, 23 ...
Plug, 24... socket, 25... magnetic sensor,
29...Reset switch, X...detection section, Y-...
・Alarm generation part, Z...-cancellation part.

Claims (1)

[Scope of Claims] A shoplifting method comprising an attachment piece that can be attached to a product in a detachable manner, and detecting a shoplifting start state that occurs in a product to which the attachment piece and related components are attached. A shoplifting prevention device comprising a detecting means and an alarm generating means for issuing an alarm upon receiving a signal indicating that shoplifting has been detected by the shoplifting detecting means, and a separate canceling means for stopping the operation of the alarm generating means. , the release means is composed of a means A disposed on the attachment piece, and a means B disposed on the release piece held by the operator, the A means having one surface of the attachment piece as a detection surface; Magnetic sensors for detecting a dot-like array of magnetism with or without magnetism or a dot-like arrangement of magnetism of different polarity are arranged along the detection surface, and the detection data of the magnetic sensor is predetermined in the attached piece. constitutes an operation inhibiting means for stopping the operation of the alarm generating means until a reset signal is input when it matches the reference data, and as means B, one side of the canceling piece is used as a canceling surface, and the above-mentioned A guide is configured to guide the detection surface of the attachment piece to face the release surface accurately, and the release surface is further provided with a dot-shaped array of magnetism or dots corresponding to the arrangement of the magnetic sensors of the attachment piece. A shoplifting prevention device characterized by comprising a magnetic array of different polarities.