EP0819290B1 - Diebstahlsicherungsvorrichtung - Google Patents

Diebstahlsicherungsvorrichtung Download PDF

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Publication number
EP0819290B1
EP0819290B1 EP96913487A EP96913487A EP0819290B1 EP 0819290 B1 EP0819290 B1 EP 0819290B1 EP 96913487 A EP96913487 A EP 96913487A EP 96913487 A EP96913487 A EP 96913487A EP 0819290 B1 EP0819290 B1 EP 0819290B1
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EP
European Patent Office
Prior art keywords
sensor element
alarm
holding part
retention part
connection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP96913487A
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German (de)
English (en)
French (fr)
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EP0819290A1 (de
Inventor
Reinhold Ott
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19512567A external-priority patent/DE19512567C1/de
Application filed by Individual filed Critical Individual
Priority to DE29624318U priority Critical patent/DE29624318U1/de
Priority to DE29624301U priority patent/DE29624301U1/de
Publication of EP0819290A1 publication Critical patent/EP0819290A1/de
Application granted granted Critical
Publication of EP0819290B1 publication Critical patent/EP0819290B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/02—Mechanical actuation
    • G08B13/14—Mechanical actuation by lifting or attempted removal of hand-portable articles
    • G08B13/1445—Mechanical actuation by lifting or attempted removal of hand-portable articles with detection of interference with a cable tethering an article, e.g. alarm activated by detecting detachment of article, breaking or stretching of cable
    • G08B13/1463—Physical arrangements, e.g. housings

Definitions

  • the present invention relates to devices for securing anti-theft goods, the devices a first holding part for attachment to an object, a second holding part for attachment to the goods and comprise a cable connecting the two.
  • the invention relates to anti-theft systems Were.
  • Such security devices are mainly used in shops for radio and television sets, video devices, Telephone systems or the like used in which a large Number of exhibition devices ready for use and test use for customers.
  • a large Number of exhibition devices ready for use and test use for customers.
  • the goods with the devices mentioned on an object like an exhibition shelf or a large, bulky one Device, attached.
  • the one that connects the two holding parts Cable allows a test use of the secured Device or the secured goods by the customer.
  • the connection to the object prevents or complicates at least a theft of the goods.
  • the holding parts each have a mounting surface with an adhesive layer by means of which they are attached to an object or be attached to a product to be secured.
  • Connecting parts on the one hand with a web dovetail cross section and on the other hand through a complementary groove that is open on one end are formed.
  • the known safety device has the disadvantage that that a secured commodity is relatively easily stolen can be done, for example, by connecting the holding parts Cable cut or one of the on an object or the holding parts stuck on the goods are torn off becomes. Consequently, the one mediated by the known device Anti-theft protection, especially for high-priced Were not enough.
  • anti-theft goods to secure an electronic system.
  • a facility has a central unit to which the individual to monitoring sensors to be attached to the goods to be secured Connection cables are connectable.
  • the monitoring sensors each have a switching contact, which when picked up a proper contact of the sensor and to an electronic measured variable is available for securing goods represents by the central unit as an alarm situation is evaluable.
  • the central unit also monitors also a proper connection of the sensor and indicates an alarm situation in the event of tampering.
  • the invention is based, devices with the features mentioned above and anti-theft systems to create a very easy to manufacture, extraordinarily safe and universally applicable Allow theft protection of goods.
  • An inventive device for securing goods against theft with the characteristics mentioned above is characterized in that at least one holding part a sensor element for monitoring a proper Attachment of the holding part to the object or the goods comprises, and that at least one holding part monitoring means comprises connected to the sensor element and so are trained that an alarm when lifting one of correct attachment monitored by the sensor element can be triggered.
  • each holding part has a surface element for attachment is included in the object or the goods proper attachment, particularly by gluing done, easily realized.
  • the surface element comprises an adhesive layer for attachment of the holding part on an object or a good.
  • the particular one with a double-sided adhesive tape formed adhesive layer enables a very simple Fastening of the holding parts to be produced, none additional fasteners, such as glue, are required are.
  • the holding parts with its surface element especially designed so resilient that when removing the proper attachment by pulling it off of the holding part of the goods or the object destruction of the surface element even when torn or detaching the adhesive layer from the surface element is excluded. So it is with a reuse a detached holding part or the device at most required, the adhesive layer and, if necessary to renew the assigned sensor element.
  • the Monitoring means connect to a central Monitoring circuit or central processing unit in one separate device is housed.
  • the connection can an electrical connection by means of a plug connection or an electrical cable, but also an optical one or radio connection. It is important when connecting only that this when picking up one of the sensor element monitored proper attachment of a holding part the fault signal on a product and / or an object forward the sensor to the central unit can, so that it can trigger an alarm.
  • each device has a connector comprises, via which a further device can be connected is so that the devices are connected in series via the electrical connections or connecting cables can be produced, only one of the devices with the central unit directly, the others over the interposition of one or more of the same type Devices can be connected and monitored.
  • the monitoring means comprise a monitoring circuit arranged in a holding part, which raise the alarm when one of correct attachment monitored by the sensor element can trigger.
  • the sensor element does not necessarily need to be on / in Holding part itself can be arranged. Rather, it can be provided be that the sensor element via an electrical Connection with the holding part is connected and spatially separately attachable to the object or goods is. Of course it can "External” sensor element in addition to one in the holding part find integrated sensor element.
  • each holding part a sensor element for monitoring a proper Attachment of the holding parts to the object or the goods comprises, and that at least one holding part to a central unit is connected so that the Cancellation of a properly monitored by the sensor elements Fixing an alarm by monitoring means can be triggered in the central unit.
  • This device can also be used to a high degree effective security of goods against theft at a great freedom of movement for test use realize the secured goods.
  • Self with a wired connection of the device the central unit is compared to the wiring effort conventional goods security systems, in which one Central unit for every object and every commodity a connection cable is performed with an end sensor, essential less.
  • the monitoring means only in a holding part or the central unit are arranged and that at least that other holding part comprises a sensor element which with the Monitoring means is in electrical connection, wherein this electrical connection at least partially the cable connecting the two holding parts is made.
  • these electrical connection at least partially the cable connecting the two holding parts is made.
  • they can at most be arranged in a holding part Monitoring means using the sensor elements both the attachment of a holding part to an object as well as the attachment of the other holding part monitor the goods to be secured. Once one of the proper ones Fastenings is lifted, there is a Alarm triggered by the monitoring means. This is how one becomes enables very simple implementation because one of the two Cable connecting parts is provided anyway and Monitoring means may be required in a holding part are.
  • each holding part monitoring means which means the proper sensor element Monitor attachment of the holding part and in the case of a Manipulation can trigger an alarm independently of one another.
  • the connection between the two holding parts Cable in particular just a mechanical connection between this one.
  • the cable can be plugged into the holding parts is. So it is very easy to use the device Configurable as needed by adding a cable Length is inserted into the holding parts, whereby this can happen in particular at the user's site.
  • the pluggable training enables various Holding parts, for example for attachment specially adapted to certain goods or objects are to be combined with one another as required.
  • the Plug connection can be done through standardized plugs and Sockets, such as Western plugs and sockets or the like, be educated.
  • the connector is not detachable is, so that after a needs-based configuration the safety device does not remove the cable the holding parts can be solved. So it becomes an unintended one Trigger an alarm by an unwanted Unplugging the connector just for a test Assessment of the secured goods by customers avoided.
  • the monitoring means are designed so that an alarm when removing the proper cable connection between the holding parts can be triggered. For this, for example from the monitoring means in a holding part across the cable to the sensor element in the other Holding part and back a closed circuit formed the one at an interruption Alarm triggering. So it is monitored whether a proper There is a cable connection between the holding parts. This is by undoing the proper cable connection especially to understand any manipulation for example, a short circuit of the Circuit.
  • a simple implementation of the device according to the invention is generally made possible by a sensor element is designed so that when the monitored correct attachment a measured variable changed and their change by the monitoring means as an alarm situation can be evaluated.
  • a measured variable changed and their change by the monitoring means as an alarm situation can be evaluated.
  • acts it is an electrical measured variable whose change is registered so that the alarm evaluation and if necessary, triggering by an electronic circuit of the Monitoring means can be done.
  • the Measured variable for example by the pressure of a Gases be formed, the change of which is then hollow trained cables can be transferred between the holding parts is.
  • a very sensitive design variant stands out characterized in that the sensor element of the holding part the strain gauge assigned to the flexible surface element includes. So are the smallest changes in shape of the flexible surface element when the proper attachment detectable, resulting in a extraordinarily high security against manipulation achievable is.
  • the very easy and inexpensive to manufacture and extraordinary is reliable, results from the fact that the surface element has an adhesive layer for fastening the Holding part of the object or the goods that stronger on the object or the goods than on the surface element adheres, and that the associated sensor element at least in sections like this between the surface element and the adhesive layer or arranged in the latter is that when lifting the proper attachment the sensor element at least partially with the adhesive layer separated from the holding part and thereby one from the sensor element formed measuring loop is interrupted.
  • the adhesive layer Has predetermined breaking points. These can, for example formed by perforations or cuts in the adhesive layer his. This ensures that the adhesive layer and thus also the sensor element when the Part of the object or the secured goods destroyed and consequently an alarm by the monitoring means is triggered.
  • the sensor element preferably comprises an electrical in particular a metal foil-like conductor loop.
  • a such a conductor loop has the advantage that an interruption of the circuit formed by the conductor loop can be detected with very little effort.
  • a metal foil-like formation of the conductor loop leads to an inexpensive manufacturability to a particularly flat design of the sensor element.
  • Adhesive connection of the conductor loop to the adhesive layer see above that when releasing the holding part from the goods to be secured sticking of the conductor loop to the itself from the contact surface element at least partially detachable adhesive layer is guaranteed. This leads to manipulation to the intended destruction of the conductor loop and thus reliable detection of the theft attempt.
  • this can also be done through an evaporated metal layer or a very thin wire. You can also predetermined breaking points are provided in the conductor loop, to interrupt the conductor loop as intended upon detachment of the holding part from the adhesive layer guarantee.
  • the surface element has an adhesive layer for attachment of the holding part on the object or the goods, the stronger on the object or the goods than on adheres to the surface element, and that the sensor element such trained and arranged on the holding part that at Undo the proper attachment of the adhesive layer at least partially separated from the holding part and this from Sensor element is detected.
  • the Sensor element e.g. as a microswitch or photosensitive Element
  • the holding part are so far prefabricated can that for theft protection of a product only one usually attached to the adhesive layer Remove protective film and the holding part on the to be secured Goods to be glued. Not optimal even with one The smooth surface of the goods to be secured becomes one unwanted alarm triggering prevented. Only with one, if necessary detachment made easier by predetermined breaking points the adhesive layer of the surface element in the event of an attempted theft an alarm is triggered because the sensor element the detachment of the adhesive layer from the holding part or Surface element detected.
  • the sensor element of a holding part is a microswitch includes.
  • the sensor element comprises a photosensitive element, for example can be formed by a phototransistor.
  • This Element is when properly fastened of the holding part of the object or the goods either from the adhesive layer or from an adjacent surface of a product to be secured or an object to be secured covered.
  • detaching the holding part from the Surface light falls on the light-sensitive surface Element, so that there is a measured variable provided by this changes and the change from the monitoring means can be evaluated as an alarm situation.
  • a surface element for attachment to the object or includes the goods it is provided here that the light-sensitive element is arranged in the holding part is that the optical axis of the element with the a fastening surface formed by the surface element includes an acute angle of preferably less than 45 °.
  • the optical axis of the photosensitive element a substantially central area of the mounting surface cuts. This is how it is with an edge Alignment of the optical axis given risk, that no adequate optical seal against ambient light depending on the surface condition of the to be secured Goods are reached, counteracted, because that photosensitive element essentially on incidence of light in the area of the center of the mounting surface.
  • At least one photosensitive element having sensor element also a light source such as a Infrared diode or LED, so include in a recess of the holding part is arranged that the light exit through the adhesive layer or a surface of the object to be secured or the goods to be secured can be covered in a light-tight manner.
  • This configuration will ensures that when lifting the holding part of of the goods or the object reflections on the the fastening surface of the surface element Surface or adhesive layer for illuminating the photosensitive element and thus a special one reliable detection independent of ambient light of any attempted theft.
  • the light source and the light sensitive Element of a unit are such in one Recess of the holding part arranged that when properly Attachment of the holding part from the light source emitted light signals on the covering the recess Adhesive layer reflects and from the photosensitive Element can be detected.
  • Adhesive layer reflects and from the photosensitive Element can be detected.
  • a holding part with a sensor element according to one of the preceding Design alternatives also individually as monitoring sensors can be used directly via a cable to a monitoring circuit in a central unit Formation of an anti-theft system can be connected.
  • the holding parts preferably comprise connecting means to create a releasable holding connection between the holding parts.
  • the two holding parts are via a Velcro fastener, reusable adhesive tape, holding magnets or the like. With each other connectable. It is also possible to get the secured goods for an appealing presentation detachable with the assigned Connect object.
  • the holding parts have a defined relative position to one another a so that just backed up with a variety of Were a uniform arrangement with the holding connection made between the respective holding parts that belong together is made possible.
  • the connecting means are designed so that a positive locking connection between the holding parts can be produced, which accordingly is highly resilient.
  • a very simple manufacture the holding connection and thus very easy handling the device are made possible in that the Connecting means are designed so that a holding part can be hooked into the other.
  • the monitoring means preferably comprise an energy store for energy supply.
  • This can, for example formed by an accumulator or a battery his. This enables the device to be used independently of the mains enables, and the device is universally usable, since no power supply lines are required are.
  • energy supply solar cells can also be used.
  • At least one holding part preferably comprises an optical one Display of the operating status of the device.
  • the very small-sized LEDs are available on.
  • the visual display is preferably in function operated in which they tampered with the attachment the holding part of the goods or the object permanently, i.e. until the alarm is cleared by an authorized Personnel who are reporting. This makes it easier Sales personnel in the event of an alarm to locate the goods, attempted theft. In any case can also get back to normal very quickly Attachment of the holding part can be made.
  • the visual display becomes like this operated that they give an optical signal, such as a blinking signal, emits when the holding part is properly attached, to potential thieves on theft surveillance to draw attention and deter theft.
  • an optical signal such as a blinking signal
  • the visual display can of course also are still used to communicate other information, such as. a properly new fixture of the holding part, for example by the display lights up briefly.
  • the monitoring means comprise an alarm unit for emitting an acoustic and / or optical alarm signal.
  • this unit includes a piezo crystal.
  • a piezo crystal is proportionate small space requirement, so that a small Size of the holding part can be easily realized.
  • the piezo crystal can be very loud if necessary Generate alarm signal, which is a safe detection attempted theft.
  • the Alarm unit also generates a small speaker an alarm signal.
  • a holding part of the device for securing goods to a monitoring circuit of an anti-theft system and / or other holding parts over a connecting cable can be connected.
  • This will make the proposed device with a conventional Anti-theft system or additional holding parts can be combined to secure additional goods.
  • the Monitoring means a transmitter to deliver a Broadcast signal indicating the alarm situation.
  • the monitoring means are designed so that the transmission signal for identification the device is encodable. So with one corresponding training of a receiving the transmission signal Central unit an identification of the device enables that detects an attempted theft Has. Accordingly, it is just when using a Many goods security devices possible, without further ado the safety device causing the alarm to identify.
  • An anti-theft system is characterized by at least one device for Goods security with a transmitter to deliver a Transmission signal indicating the alarm situation and by a Central unit made up of a receiver for wireless Receive the transmission signal and to detect an alarm situation and an alarm unit for emitting an acoustic and / or optical alarm signal.
  • a Central unit made up of a receiver for wireless Receive the transmission signal and to detect an alarm situation and an alarm unit for emitting an acoustic and / or optical alarm signal.
  • Such Anti-theft system also allows in the case of sprawling shops with little effort producible anti-theft device. So the receiving unit central, e.g. near a cash register or the like, be set up.
  • the individual devices for Goods security are on the goods to be secured and corresponding objects, such as shelves, or solid facilities connected to the premises. Due to the wireless signal transmission is a Wiring not required, so only a little Cost of goods security with central monitoring is required.
  • Every attempted theft is carried out by the surveillance means of the device concerned, and an alarm situation indicating transmission signal is transmitted. This is received by the receiver of the central unit and as Alarm situation evaluated so that by means of the controllable Alarm unit an acoustic and / or visual Alarm is given. In particular, the sales staff be informed of the attempted theft and prevent theft.
  • the central arrangement of the A means indicating an alarm allows a special one powerful design of the alarm unit, the Variety of goods security devices from very inexpensive and small components with a small Power requirements can be established. this leads to low manufacturing costs for the entire anti-theft system.
  • each of these monitoring means have an identification of the device Codable transmission signal in the event of an alarm situation can send out, and the receiving unit of the anti-theft system a decoder including one controllable display includes, so that an alarm situation recognizing device based on its transmission signal is identifiable and displayable. So the sales staff Immediate identification in the event of an alarm the anti-theft device triggering the alarm enabled by the display so that a potential Very thief, especially in a large shop can be localized and captured quickly.
  • Another anti-theft system is characterized by at least one of the devices mentioned for security and a central unit which, as monitoring means, has at least one monitoring circuit, to which the device or its Monitoring or sensor means using a connecting cable can be connected and which detect an alarm situation can, and a controllable by the monitoring circuit Alarm unit for emitting an alarm signal comprises.
  • the inventive device shown in the drawing to secure goods against theft is general designated 10.
  • the device 10 has a first holding part 12 for attachment to an object 14, a second holding part 16 for attachment to one securing goods 18 and one of the two holding parts 12 and 16 connecting cable 20 on.
  • the first Holding part 12 on an object 14 in the form of a Wall mounted is the first Holding part 12 on an object 14 in the form of a Wall mounted.
  • the second holding part 16 is closed on one securing goods 18 in the form of a radio attached by the second holding part 16 glued to the underside thereof is. Accordingly, the appearance of the goods 18 not affected for customers.
  • the so arranged Device 10 already provides mechanical security of the goods 18 against theft.
  • the Device 10 monitoring the proper fastenings the holding parts 12 and 16 on the object 14 or the goods 18 that are described in the following Exemplary embodiments with reference to the other figures is explained.
  • Device 10 in a further embodiment of the invention, comprise the holding parts 12 and 16 each connecting means to each other can be brought into engagement, so that a fixed, again releasable holding connection between the holding parts 12 and 16 can be produced.
  • This lanyard will come later discussed in more detail.
  • the two have the flexible cable 20 mechanically connected holding parts 12 and 16 each essentially have the shape of a flat cuboid, with the first holding part 12 on a its flat sides a surface element 21 with a Has mounting surface 22 on which an adhesive layer 24 for fastening the holding part 12 to one in the 2 and 3, an object not shown is applied is.
  • the second holding part 16 also has one A flat element 21 with an adhesive layer 24 on the flat side on the attachment of the second holding part 16 a not shown, to be secured goods.
  • Both adhesive layers 24 are adhesive on both sides Adhesive tape formed and point in the area of their middle an opening 26. In the area of these breakthroughs 26 is a sensor element 28 for monitoring the proper fastening of the holding parts 12, 16 inserted into the corresponding surface element 21.
  • the first holding part 12 has a sensor element 28 Microswitch 30, whose actuating part 32 is through the opening 26 of the adhesive layer 24 extends and over the adhesive surface facing an object the adhesive layer 24 protrudes, as can be seen in FIG. 3 is.
  • the first holding part comprises 12 monitoring means 34, in a corresponding and for example recess of the first closed with a lid Holding part 12 are arranged.
  • the monitoring means 34 are via electrical lines 36 to the sensor element 28 of the first holding part 12 and via electrical lines 38, which extends through the cable 20 into the second Extend holding part 16 with the sensor element 28 of the second holding part 16 connected.
  • the cable 20 is used here in addition to a mechanical one, an electric one Connection of the two holding parts 12, 16 and their electrical Components.
  • this is Sensor element 28 of the second holding part 16 by photosensitive element 40, such as a photodiode or a phototransistor, which is formed in the surface element 21 of the second holding part 16 is inserted that through the opening 26 of the adhesive layer 24 Light detected by the photosensitive element 40 becomes.
  • photosensitive element 40 such as a photodiode or a phototransistor
  • the monitoring means 34 used in this embodiment only in one, namely in the first holding part 12 are arranged, comprise an evaluation unit 42 which the electrical supplied by the sensor elements 28 Evaluates measured variables for an alarm situation. Further the monitoring means 34 comprise an energy store 44 in the form of a battery or an accumulator Power supply and an alarm unit 46 for delivery an acoustic alarm signal from the evaluation unit 42 can be controlled and comprises a piezo crystal, which is arranged in the holding part 12 that it in the case an alarm is an audible acoustic that is clearly audible from the outside Can send out alarm signal.
  • the device 10 The following is the use and function of the device 10 described. It should be noted that the Representation example according to FIGS. 2 and 3 between a first holding part 12 and a second holding part 16 differentiated becomes. This is explained by the later the connecting elements associated with the holding elements 12, 16 conditional for establishing a holding connection.
  • the monitoring means 34 can be selected in one of the two holding parts 12 and 16 or also be arranged in both.
  • the first holding part 12 is by means of its adhesive layer 24 on a surface of an object, not shown, that is not at risk of theft, like a big unwieldy one Device, an exhibition shelf or the like, glued. This will ensure proper attachment of the first holding part 12 made on the object, by the actuator 32 from that on the adhesive layer 24 depressed object surface coming into contact and the switching point of the microswitch 30 exceeded becomes.
  • the sensor element 28 of the first holding part thus detects 12 a proper attachment of the latter.
  • the switching state of the microswitch 30 is reflected in an electrical measured quantity again, by means of which the Monitoring means 34 recognize an alarm situation.
  • the second holding part 16 is moved to one in FIGS. 2 and 3 Goods, not shown, to be secured by means of the adhesive layer 24 to make a proper attachment of the second holding part 16 glued to the goods. Because of the attachment to the adhesive layer 24 coming goods surface, the recess 26 of the Adhesive layer 24 and thus the photosensitive element 40 covered light-tight or at least largely darkened.
  • the photosensitive member 40 provides one for this covered state characteristic electrical Measured variable available by the evaluation unit 42 the monitoring means 34 as a more orderly state Attachment of the second holding part 16 to the to be secured Goods can be evaluated. Accordingly, this also represents Sensor element 28 of the second holding part 16 is an electrical one Measured variable available, the proper attachment of the second holding part 16 displays.
  • the monitoring means 34 are armed. This can be done, for example, via a not shown Push button or a switch to switch on the power supply by connecting the energy store 44 to of the evaluation unit 42. It is preferably provided that the evaluation unit 42 by an over or both sensor elements 28 flowing activation current is armed, which is in the process of producing a correct attachment.
  • the monitoring means 34 monitor a proper one Attachment of the two holding parts 12 and 16 on the object or the goods by the evaluation unit 42 the sensor elements 28, electrical parameters on the respective alarm criteria checked.
  • These alarm criteria can, for example by a certain change in electrical resistance, a voltage change or a current change be given, the alarm criteria also depending on the used Sensor elements 28 individually or uniformly can be fixed.
  • Each of these changes in the measured variable is determined by the evaluation unit 42 of the monitoring means 34 as an alarm situation recognized, and the alarm unit 46 is driven so that a loud alarm signal sounds, which means that a proper attachment of one of the holding parts 12, 16 displays.
  • FIGS. 2 and 3 28 The design of the sensor elements shown in FIGS. 2 and 3 28 as a microswitch 30 and as a photosensitive Element 40 is only a representation example understand. Of course, these embodiments as required in one or both of the holding parts 12, 16 or other detectors described later are used as sensor elements 28. Furthermore it is also possible to arrange that arranged in the surface element 21 Covering the sensor element 28 with the adhesive layer 24, if it is designed so that when you pick it up the proper attachment to the adhesive layer 24 adheres to the object or goods more than to the surface element 21 and accordingly deducted from the latter becomes. Then the sensor element 28 removes it the adhesive layer 24 of the holding part 12, 16 in the case of a Attempted theft detected.
  • Another essential feature of the invention is to be seen in the fact that the arrangement of the monitoring means 34 in a holding part 12 and in particular electrical Connection with one sensor element 28 in the other Holding part on the cable 20 also for monitoring the Cable connection between the holding parts 12, 16 leads. So if the proper cable connection is removed an alarm signal is triggered because of that in the other Holding part 16 arranged sensor element 28 supplied Measured variable in the event of manipulations on the cable 20, such as an interruption or short circuit, is necessarily changed.
  • the first holding part 12 has on its surface element 21 facing away from the flat side, a first connecting part 50, which is formed in one piece with the holding part 12 is.
  • the connecting part 50 is plate-shaped and has essentially the same flat cuboid shape as the first holding part 12.
  • the first connection part 50 has a recess 52 which is essentially the flat stump of a triangular, irregular pyramid whose base corresponds to the flat side of the first Holding part 12 is facing.
  • the recess 52 is arranged at the side edge of the connecting part 50, and at an end face 54, that of the attachment point of the cable 20 on the first holding part 12 is opposite.
  • the top surface of the truncated pyramid lies in that of the first Holding part 12 facing away from the flat side of the first connecting part 50, so that the latter the recess 52nd bounded by two undercut sections 56 which V-shaped to each other and inclined to the flat side Form run-up surfaces 58.
  • the second holding part 16 has on its surface element 21 opposite flat side one piece with connected to this second connecting part 60, the as a flat stump of an irregular, three-sided Pyramid is formed, with the surface of his head the flat side of the second holding part 16 is connected.
  • the second connecting part 60 is essentially complementary formed to the first connecting part 50 corresponds approximately in its shape of the recess 52. Furthermore, the second connecting part 60 is on the second Holding part 16 corresponding to the recess 52 on the first Holding part 12 arranged, the projecting second connecting part 60 therefore extends from one End face 62 of the second holding part 16, which is a fastening point of the cable 20 on the holding part 16, with side faces tapering in a V-shape to the middle of the flat side of the second holding part 16.
  • These side surfaces represent undercut sections 64 represents the flat side of the second holding part 16 and thus also ramp surfaces inclined to its surface element 21 66 form.
  • the holding parts 12 and 16 with their connecting parts 50 and 60 are injection molded in one piece from plastic, so that the device 10 can be easily manufactured becomes.
  • connecting means becomes the first holding part 12 by means of its adhesive layer 24 on an oblique to the horizontal or on a vertical surface an object for fastening the first holding part 12 glued to the object.
  • This is the first holding part 12 aligned so that the recess 52 is on top and the end face 54 of the recess 52 assigned first holding part 12 extends substantially horizontally.
  • the second holding part 16 is made by means of an adhesive layer 24 associated with a product to be secured, not shown.
  • the second holding part 16 with its second connecting part 60 into that of the first connecting part 50 formed recess 52 hooked.
  • This relative movement between the two holding parts 12 and 16 is generally perpendicular to the two surface elements 21 held approximately parallel to one another of the holding parts 12 and 16 in the direction of arrow 70.
  • the second holding part 16 slides with his second connecting part 60 on the first holding part 12 essentially parallel to the surface elements 21 in the direction of the arrow 72 downwards, the one on top of the other tapered undercut sections 56 and 64 act as a lead-in chamfer and creating a rear grip lighten between them. So come finally the undercut sections 56 and 64 the holding parts 12 and 16 for mutual contact, and a rear grip between the two connecting parts 50 and 60 over the entire length of the undercut Sections 56 and 64 are made.
  • the so resulting, positive locking connection of the two Holding parts 12 and 16 is very resilient, so that the second holding part 16 arranged goods of which the first holding part 12 supporting object is held.
  • the second holding part can be used to release the holding connection 16 from the first holding part 12 opposite the arrow 72 moved upwards or due to the inclination of the undercut Sections 56 and 64 inclined upwards moved in the direction of arrow 74 away from the first holding part 12 become.
  • the run-up surfaces 58, 66 are put through their inclination with respect to surface element 21 of the first Holding part 12 and by their angular position to each other Inclination of the obliquely upward release movement 74 firmly under which the ramp surfaces 58, 66 when loosening the Hold connection can slide from each other.
  • the holding connection can be produced and released by a relative movement of the two holding parts 12 and 16 relative to one another within a direction which lies in an angular range a which is limited by the release movement in the direction of arrow 74 on the one hand and a movement counter to the hanging direction 72 on the other hand is. Accordingly, it is very easy to establish or release the holding connection, since no precisely defined direction of movement has to be observed, but rather the said angular range a is available for the relative movement.
  • the inclined run-up surfaces 58, 66 allow loosening the holding connection by a perpendicular to the mounting surface 22 of the first holding part 12 and of this directed away, acting on the second holding member 16 release force.
  • the inclination results in one in the direction 74 extending force component that leads to a corresponding Release movement of the second holding part 16 with respect to first 12 leads.
  • the secured goods are from customers by a force directed against arrow 70, that is a force directed away from the object, under suspension the holding connection of the two holding parts 12, 16 recordable.
  • a further embodiment variant of a Holding part described with reference to FIGS. 4 and 5, the 80 is designated.
  • the holding part 80 shown in contrast to the 2 and 3 embodiments shown flexible housing 82 made of a rubber-elastic material.
  • the housing 82 has an integrated surface element 84 with a flexible, smooth mounting surface 86, which forms a flat side of the housing 82.
  • the housing is 82 essentially as a flat cuboid with rounded Edges formed.
  • the mounting surface 86 corresponds a base of the cuboid.
  • the housing 82 also the shape of a flat section of a circular cylinder or an elliptical cylinder or another Have shape. It is important that a flexible surface element 84 is formed.
  • a rigid connecting part 88 is cast into the housing 82, on which the cable 20 for connection to another, Not shown holding part is connected.
  • the connector 88 serves on the one hand a fixed mechanical connection of the cable 20 with the holding part 80 as strain relief and on the other hand an electrical Connection of the sensor element arranged on the holding part 80 28 via electrical lines 38. Since the connecting part 88 is fully encased by the housing 82, is in the illustrated Embodiment also partially the cable 20 in the housing 82 co-cast and thus mechanically with this firmly connected. Alternatively, the cable 20 can, however also pluggable with the housing 82 and the connecting part 88 be connected.
  • the connecting part 88 is very flat and runs with its main extension plane essentially parallel to the fastening surface 86.
  • the connecting part 88 has two contact points 90 in the form of contact pins on, each by the surface element 84 to Attachment surface 86 extend and possibly something are increased beyond the mounting surface 86.
  • the contact points 90 serve for an electrical connection of the sensor element arranged on the fastening surface 86 28.
  • the sensor element 28 lies flat on the fastening surface 86 on.
  • Conductor loop 92 formed here from one Metal foil strip is made of aluminum, the spaced and approximately parallel to the edge of the mounting surface 86 of the surface element 84 arranged is.
  • the conductor loop 92 essentially forms an open U and covered with the free leg ends in each case one of the contact points 90 of the connecting part 88.
  • the contact points 90 By the conductor loop 92 resting on the contact points 90 electrical contact is made with the Conductor loop 92.
  • the contact points 90 opposite the mounting surface 86 preferably slightly raised.
  • the surfaces of contact points 90 are preferred coated with gold to provide low contact resistance to ensure the conductor loop 92.
  • the conductor loop 92 is replaced by a corresponding evaporated metal sheet, e.g. made of silver, which also on the contact points 90 for electrical contacting may have evaporated.
  • Fig. 4 can be seen that the sensor element 28 on the Fastening surface 86 of the holding part 80 with an adhesive layer 96 is completely covered. This is both liable on the mounting surface 86 as well as on the sensor element 28.
  • Figure 5 for illustrative purposes the representation of this adhesive layer is omitted.
  • the adhesive layer 96 is by a double-sided adhesive tape formed, the one facing away from the surface element 84 Adhesive surface 94 by a protective film, not shown until it is attached to a surface of an object or goods to be secured is covered.
  • this is Sensor element 28 between the adhesive layer 96 and the holding part 80 or the surface element formed by this 84 arranged.
  • Fig. 5 it is indicated that the cable 20 is one Line 38 leads to contact points 90. It will be a closed circuit through the conductor loop 92 over the contact points 90, the connecting lines 38 and that Cable 20 formed, the monitoring means, not shown here 34 monitor.
  • FIGS. 4 and 5 are the monitoring means 34 for monitoring a proper attachment of the holding part 80 in one connected to the holding part 80 via the cable 20 other holding part arranged.
  • This holding part can then depending on the intended use corresponding to that in FIG. 4 and 5 or also corresponding to one in FIGS. 2 and 3 illustrated embodiment may be formed.
  • the necessary monitoring means also encompassed by the holding part 80 and in its housing 82, in particular in the connecting part 88.
  • the housing 82 is so flat that it is identical to the surface element 84.
  • the electric one Sensor element 28 can then be connected by that the cable 20 between the surface element 84th and the adhesive layer 96 or alone glued into the latter and is connected to the sensor element 28. So lets an extremely small thickness of the holding part 80 of only a few millimeters.
  • the holding part 80 is an object or a product Help the exempt from the protective film, not shown Adhesive surface 94 of the adhesive layer 96 on a surface of the object or the goods stuck on. Due to the flexible training of both the sensor element 28 and also the surface element 84 including the housing 82, the holding part 80 to any curved or curved surface can be adjusted.
  • the holding part 80 is used to make a proper attachment with the adhesive surface 94 over the entire surface glued on, preferably through an underside of the Goods or the object is formed, so that the appearance of the object or the goods only minimal is affected.
  • the adhesive layer remains 96 with the sensor element 28 or the conductor loop 92 stick to the goods or the object. It at most, the surface element 84 can be pulled off from the adhesive layer 96.
  • the adhesive layer 96 a higher adhesive or adhesive force on the adhesive surface 94 than opposite to the surface element 84. Accordingly when the holding part 80 is removed from the goods or the object formed by the sensor element 28 Measuring loop, here the electrical conductor loop 92, interrupted. If necessary, the conductor loop 92 and / or the adhesive layer 96 for the defined interruption additionally predetermined breaking points, such as tapering, perforations or incisions.
  • the interruption leads to a significant change in the Measured variable provided by the measuring loop, which of the evaluation unit 42 recognized as an alarm situation becomes.
  • the evaluation unit 42 inputs alarm triggering signal to the alarm unit 46 which accordingly an alarm signal sounds.
  • the flexibly trained Holding part 80 also with other types of sensor elements 28, such as a microswitch 30 or a photosensitive Element 40, can be equipped.
  • Fig. 6 shows a proposed anti-theft system. This includes at least one modified proposal Device 10 for securing goods against Theft as well as a central unit 100. In the illustration example two devices 10 are shown which both two holding parts connected by a cable 20 12 and 16 include.
  • the holding part 12 of the upper one in the illustration according to FIG. 6 Device 10 is in the form of an object 14 Fixed table.
  • the other holding part 16 is as a computer connector sensor formed on a Standard connection of a personal computer to be secured Goods 18 is attached.
  • this is a holding part 12 on a television that has an item 14 for security forms, attached.
  • the other holding part 16 is on the back of a product 18 to be secured Remote control stuck on.
  • Each of the holding parts 12, 16 includes one, not shown Sensor element 28 for monitoring a proper Attachment to the respective goods 18 or the respective Subject 14.
  • the sensor elements 28 Measured variables are provided with the help of in the example, each in the holding parts 12 arranged monitoring means 34 for the occurrence monitors an alarm situation.
  • the modification of the devices 10 compared to the in 1 to 5 illustrated embodiments is that the monitoring means 34 instead of the Alarm unit 46 comprise a transmitter, not shown, which can be controlled by the evaluation unit 42 that when an alarm situation occurs, it is shown in FIG. 6 can transmit the indicated wireless transmission signal 110, which is received by the CPU 100.
  • Each transmitter of the monitoring means 34 is designed so that the transfer can be easily even over larger ones Distances is possible.
  • the transfer can via ultrasound, infrared or radio signals, a radio signal has the advantage that neither Visual contact between sender and receiver is another special one Alignment of sender and receiver to each other required are.
  • the transmitters of the monitoring means 34 are each designed that these send signals in the event of an alarm situation 110 which send an identification code for unambiguous identification of those sending the signal Include device 10.
  • the central processing unit 100 comprises a receiver 102, one Decoder 104, display 106 and one Alarm unit 108 for emitting an alarm signal.
  • the receiver 102 is for receiving the in the event of a Alarm situation from a device 10 broadcast signals 110 set up.
  • the decoder 104 decodes the in the received transmission signal 110 contained identification code of the respective Device 10 and controls display device 106 so indicates that in the event of an alarm situation, the device concerned 10 is displayed.
  • the display device 106 a series of light emitting diodes, each correspond to a specific device 10. At In the event of an alarm situation, the LED lights up corresponds to the device emitting a signal 110. So is in the event of an alarm using the display device 106 immediately recognizable, with which device 10 a Alarm situation was detected.
  • the alarm unit 108 is either from the decoder 104 or alternatively, directly controllable and generated by the receiver 102 in the event of an alarm situation, an acoustic and / or optical alarm signal.
  • the alarm unit can do this 108 include, for example, a siren or a flash lamp.
  • the described anti-theft system according to the invention can have a virtually unlimited number of devices 10 to secure individual goods against theft. Because there is no cable connection between the devices 10 and the central unit 100 are required Anti-theft system universal and in particular can also be used for large shops. In addition, the Anti-theft devices 10 by selection of appropriate Holding parts and sensor elements optimal to each goods to be secured are adjusted.
  • the anti-theft system is put into operation Devices 10 designed so that a test Transmitted signal 110 with an encoded identification code can send out.
  • a test Transmitted signal 110 with an encoded identification code can send out.
  • the first time a Identification codes on the encoder 104 are stored and a predeterminable or the next free ad space assigned to the display device 106.
  • the alarm unit in a test mode of the central unit 100 108 can be switched off.
  • By sending the Transmitted signal 110 from devices 10 can then be determined which display space the display device 106 allocates which security device 10 corresponds.
  • FIG. 7 represents an anti-theft system represents in which the devices 10 for security are modified so that the first Holding part 12 via a connecting cable 112 to a monitoring circuit 114 can be connected in the control center 116.
  • each monitoring circuit triggers 114 an alarm regardless of the others by triggering the alarm unit 108.
  • the monitoring circuits 114 can each have one Activation circuit include connecting a Allows device 10 without triggering an alarm, however when disconnecting the connection to the respective device 10 triggers an alarm.
  • the device 10 for Goods security can be provided that at each and in particular to the first holding part 12 further holding parts 12, 16 or 80 can be connected via cable 20, so that a kind of local distributor is formed, the first Holding part 12 each have a connection to the control center 100 or 116 if a proposed anti-theft system is set up can manufacture.
  • a further embodiment variant is described below with reference to FIG. 8 of a holding part 120 described.
  • It includes a housing 122, which may be made of a rubber-elastic Made of material and can therefore be flexible.
  • the housing 122 has an integrated surface element 124 with a flexible, smooth mounting surface 126, which forms a flat side of the housing 122.
  • the holding part 120 is connected to another not shown holding part connected. Possibly can the holding part 120 also connectivity for other holding parts.
  • the sensor element 28 includes a arranged in a recess 130 of the holding part 120 photosensitive element 40.
  • the recess 130 extends from the mounting surface 126 obliquely in the Interior of the surface element 124 or the housing 122 in the way that the optical axis 132 of the photosensitive Elements 40, i.e. its main detection direction, an acute angle ⁇ with the mounting surface 126 includes, which is in particular less than 45 °.
  • an acute angle ⁇ with the mounting surface 126 includes, which is in particular less than 45 °.
  • the recess 130 is aligned so that the Axis 132 starting from the photosensitive element 40 in substantially toward the center of the mounting surface 126 runs or a central region 142 of the mounting surface 126 cuts.
  • This orientation of the photosensitive member 40 leads to improved responsiveness to oblique light hitting the mounting surface 126 like this attempts at tampering, if that happens properly attached holding part 120 first detached laterally is and ambient light on the side of the mounting surface 126 falls.
  • the response behavior of the sensor element 28 can further can be improved in that several photosensitive Elements 40 used and with their optical axes 132nd in different directions, e.g. star-shaped regarding the mounting surface as a projection plane become.
  • the adhesive layer 128 assigns Opening of the recess 130 corresponding openings so that a light-tight cover of the photosensitive Element 40 by the surface of the goods or the Item in the properly attached state of the Holding part 120 takes place.
  • the adhesive layer 128 consistently trained, so that then an alarm situation is detected when the adhesive layer 128 of the Mounting surface 126 is released and thereby ambient light, possibly with reflection on the mounting surface 126 facing side of the adhesive layer 128, can hit the photosensitive member 40.
  • a particularly reliable detection of theft attempts is in the embodiment shown in Fig. 8 of the holding part 120 achieved in that the sensor element 28 additionally a light source 136, for example by a pulsed, especially to save electricity, Light-emitting diode can be formed, includes and in a Recess 130 corresponding, axially symmetrical to a surface normal 134 of the mounting surface 126 Recess 138 in surface element 124 or in Housing 122 of the holding part 120 is arranged.
  • the light source 136 is just like the photosensitive element 40 via cable connections and dashed lines the cable 20 to the monitoring means, not shown 34 or directly to the monitoring circuit 114 on the one hand for power supply and on the other hand for discharge of a detection signal connected.
  • the recess 138 is formed and the light source 136 is oriented so that its main radiation direction 140 in the representation example according to FIG. 8 essentially axisymmetric to axis 132 with respect to the surface normal 134 runs.
  • the additionally provided light source 136 makes one Independence from ambient light during detection of manipulation attempts achieved because the light source 136 in the properly attached state of the holding part 120 either through a surface of the goods or the object in the embodiment or alternatively by the adhesive layer 128 is covered in a light-tight manner. Only at; only when a lifting of the proper attachment condition can light from light source 136 from recess 138 emerge and if necessary under reflection on the Surface or the adhesive layer 128 into the recess 130 enter and hit the photosensitive member 40, so that the measurement signal provided is changed and thereby an alarm situation is signaled.
  • Holding part 120 or the other described variants to be used individually as a monitoring sensor, whereby each sensor directly to an anti-theft system connected via a connecting cable 112 and with his Fastening surface 126 attached to a product to be secured becomes.
  • FIG. 9 shows a further embodiment of a device 150 according to the invention, in which a first holding part 152 on a television set 154 (Object) and a second holding part 156 on an associated one Remote control (goods) 158 is attached.
  • the proper one State of attachment of the second holding part 156 on the remote control 158 is used as a microswitch trained and arranged in the holding part 156
  • Sensor element (not shown) monitors which in the event that the proper condition of the attachment canceled, indicates an alarm condition.
  • About one electrical connection cable 160 between the first and second holding part 152 or 156 is that of the sensor element displayed alarm status relayed.
  • From the first holding part 152 feeds an electrical connection cable 162 a central processing unit (not shown) with a monitoring circuit, when the alarm status signal is transmitted triggers an alarm from the sensor element.
  • a central processing unit not shown
  • the device according to the invention with a connection, For example, a connector on which The object to be fastened is provided an electrical connection cable 162 is adjacent to one used similar device according to the invention can be connected. So a variety of connect devices 150 according to the invention in series, a first device 150 in line with the Central unit is connected and the alarm state of a each of the devices / holding part sensor element connected in series reports to the central unit. This allows a particularly simple and clear Wiring when using a variety of inventive Devices with a single central unit.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
  • Air Bags (AREA)
  • Glass Compositions (AREA)
  • Lubricants (AREA)
  • Developing Agents For Electrophotography (AREA)
EP96913487A 1995-04-04 1996-04-04 Diebstahlsicherungsvorrichtung Expired - Lifetime EP0819290B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE29624318U DE29624318U1 (de) 1995-04-04 1996-04-04 Diebstahlsicherungsvorrichtung
DE29624301U DE29624301U1 (de) 1995-04-04 1996-04-04 Diebstahlsicherungsvorrichtung

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19512567A DE19512567C1 (de) 1995-04-04 1995-04-04 Diebstahlsicherungsvorrichtung
DE19512567 1995-04-04
DE29602412U DE29602412U1 (de) 1995-04-04 1996-02-12 Diebstahlsicherungsvorrichtung
DE29602412U 1996-02-12
PCT/EP1996/001493 WO1996031852A1 (de) 1995-04-04 1996-04-04 Diebstahlsicherungsvorrichtung

Publications (2)

Publication Number Publication Date
EP0819290A1 EP0819290A1 (de) 1998-01-21
EP0819290B1 true EP0819290B1 (de) 2001-07-18

Family

ID=26014103

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96913487A Expired - Lifetime EP0819290B1 (de) 1995-04-04 1996-04-04 Diebstahlsicherungsvorrichtung

Country Status (8)

Country Link
EP (1) EP0819290B1 (da)
AT (1) ATE203348T1 (da)
CA (1) CA2217239C (da)
DK (1) DK0819290T3 (da)
ES (1) ES2161358T3 (da)
GR (1) GR3036879T3 (da)
PT (1) PT819290E (da)
WO (1) WO1996031852A1 (da)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5726627A (en) 1995-05-16 1998-03-10 Roger A. Kane Security system with intermittent alarm location detection
EP1093744A3 (de) * 1999-10-22 2003-07-09 Reinhold Ott Vorrichtung zur Sicherung einer Ware gegen Diebstahl
DE19951019B4 (de) * 1999-10-22 2007-02-01 Ott, Reinhold, Waterloo Vorrichtung zur Sicherung einer Ware gegen Diebstahl

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3932857A (en) * 1971-07-06 1976-01-13 Salient Electronics, Inc. Alarm system sensing device
US4654640A (en) * 1985-12-03 1987-03-31 United Technologies Corporation Digital PBX integrated workstation security system
EP0260330A1 (de) * 1986-09-13 1988-03-23 Tele-Security-Foto Überwachungsanlagen GmbH Diebstahlssicherung für Gegenstände
US4855713A (en) * 1988-10-07 1989-08-08 Interactive Technologies, Inc. Learn mode transmitter
US4945341A (en) * 1989-04-05 1990-07-31 Buttimer Gregory J Alarm system for electrical devices

Also Published As

Publication number Publication date
EP0819290A1 (de) 1998-01-21
ATE203348T1 (de) 2001-08-15
CA2217239C (en) 2004-09-14
PT819290E (pt) 2001-10-31
GR3036879T3 (en) 2002-01-31
ES2161358T3 (es) 2001-12-01
WO1996031852A1 (de) 1996-10-10
CA2217239A1 (en) 1996-10-10
DK0819290T3 (da) 2001-09-24

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