EP0703637A1 - Antenna for an electronic surveillance system - Google Patents

Antenna for an electronic surveillance system Download PDF

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Publication number
EP0703637A1
EP0703637A1 EP95810549A EP95810549A EP0703637A1 EP 0703637 A1 EP0703637 A1 EP 0703637A1 EP 95810549 A EP95810549 A EP 95810549A EP 95810549 A EP95810549 A EP 95810549A EP 0703637 A1 EP0703637 A1 EP 0703637A1
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EP
European Patent Office
Prior art keywords
hollow profile
antenna according
antenna
longitudinal slot
profile
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.)
Withdrawn
Application number
EP95810549A
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German (de)
French (fr)
Inventor
Ernst Jetzer
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.)
Actron Entwicklungs AG
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Actron Entwicklungs AG
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Filing date
Publication date
Application filed by Actron Entwicklungs AG filed Critical Actron Entwicklungs AG
Publication of EP0703637A1 publication Critical patent/EP0703637A1/en
Withdrawn legal-status Critical Current

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    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
    • G08B13/2465—Aspects related to the EAS system, e.g. system components other than tags
    • G08B13/2468—Antenna in system and the related signal processing
    • G08B13/2474—Antenna or antenna activator geometry, arrangement or layout
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
    • H01Q7/04—Screened antennas

Definitions

  • the present invention relates to an antenna for an electronic security system with a hollow profile for receiving an antenna wire, as is mounted in the exit area of many shops for theft monitoring.
  • An antenna of this type is known for example from US-A-4,251,808, in which case the hollow profile is a closed metal tube.
  • Different variants with single and multiple loops of the antenna wire are described, with cross bars being provided in the multi-loop types for receiving transverse sections of the antenna wire.
  • the metal tube is used primarily for the optical cladding of the antenna wire against capacitive interference.
  • a similar construction is known from DE-A1-4027710.
  • a disadvantage of these antennas is above all the relatively complex insertion of the antenna wire and possibly further electrical circuit elements into the metal tube. This applies in particular to the multi-loop types, in which the attachment of the crossbars also requires a great deal of effort.
  • a multi-loop antenna is known with an antenna wire designed as a coaxial cable in a hollow profile made of insulating material. Because the hollow profile is composed of two half-shells, the insertion of the antenna wire is made considerably easier. Due to the shape of the half-shells and the one required to manufacture them However, the geometry of the antenna is defined for tools and shapes. Every change in geometry requires new tools or shapes.
  • the geometric shape of the antenna especially as far as the number of loops is concerned, should be easy to change.
  • the antenna according to the invention accordingly has an insertion shape and a longitudinal slot through which the antenna wire in its intended form can be inserted into the hollow profile.
  • the antenna wire can thus definitely be placed or bent into its final shape with the desired number of loops before it is introduced into the hollow profile and, if it is not itself sufficiently dimensionally stable, can also be stiffened in this shape (form of determination) by suitable aids.
  • the antenna wire therefore does not get its final shape from the hollow profile.
  • All additional circuit elements that may be required, such as bridging resistances between individual loops and / or connecting cables for an alarm lamp, can be included in the "antenna wire package" so that a uniform insertion element for the hollow profile is created.
  • a dimensionally stable body can be inserted into the hollow profile, it must have an insertion shape, for example a U-shape with two parallel ones Thighs.
  • the longitudinal slot in the hollow profile must of course be provided on the inside of the U-bend.
  • any crosspieces Flexibility with regard to the number and position of any crosspieces and thus also with regard to the number of antenna loops is achieved within the framework of the construction according to the invention in that the ends of the crosspieces are also longitudinally displaceable in the longitudinal slot of the hollow profile.
  • the crosspieces are preferably also hollow profiles and more preferably composed of two half profiles.
  • the crosspieces are either made of a non-conductive material or insulated at their ends so that they do not form short-circuit bridges.
  • the area framed by the hollow profile can be closed by plate-shaped inserts. On the one hand, this prevents e.g. Children can simply climb up on the antennas and outline them; the plate-shaped inserts can also be used to advantage as advertising space. Like the crossbars, they can be guided in the longitudinal slot.
  • the antenna shown in the figures has an approximately U-shaped hollow profile 1 with a continuous longitudinal slot 2 on the inside of the arc.
  • An antenna wire or antenna wire package 3 is inserted into the hollow profile 1 from below, as can be seen in FIG. 2.
  • the antenna wire package 3 will consist of several loops of an antenna wire, preferably twisted relative to one another, whereby this length section can certainly run through several times. However, it could just as well consist of just a single loop.
  • the antenna wire package 3 should at least be dimensionally stable in itself that it can be inserted as a whole through the longitudinal slot 2 into the hollow profile 1. If the antenna wire does not have sufficient inherent rigidity, it can be stiffened by additional aids and kept in its intended form.
  • two transverse webs 4 are provided to accommodate the two central horizontal sections of the antenna wire or antenna wire package 3 that result from the multiple loop.
  • the crossbars 4 are composed of an upper and a lower half profile and can be easily attached in this way around the horizontal sections mentioned.
  • the antenna wire does not have to be laboriously passed through it.
  • the transverse webs 4 are provided with an engagement profile 5, with which they can engage in the longitudinal slot 2 in the hollow profile 1 and engage behind its edges. They are inserted into the hollow section 1 together with the antenna wire package.
  • the construction can be seen very flexibly with regard to the number and position of crossbars 4.
  • the hollow profile 1 is held by a foot part 6, which has two holding columns 7 and can be screwed onto the floor.
  • the two support columns 7 are provided on their outer sides, like the crosspieces 4, each with an engagement profile 8 for the longitudinal slot 2 in the hollow profile 1.
  • the hollow profile 1 can therefore be attached with its two vertical legs from above onto the foot part 6 or its two holding columns 7.
  • the space between the two support columns 7 of the foot part 6 can advantageously be used as a receptacle for an electronic unit (not shown).
  • guide slots 9 are provided for inserting one or more circuit boards or mounting plates, as well as lateral and upper wall elements 10.
  • the longitudinal slot 2 in the hollow profile 1, at least where it is exposed, can also be provided with a cover profile 11 which, as can be seen in FIG. 5, can be introduced into the slot.
  • the hollow profile 1 has two inwardly curved sections 16 at the longitudinal slot 2, which contribute significantly to its stiffening.
  • the free areas framed by the hollow profile 1 and subdivided by the transverse webs 4 can be closed by plate-shaped inserts.
  • inserts 12 - 14 are indicated by a shading.
  • the inserts can be transparent, but in particular can be used as areas for advertising prints.
  • they are preferably provided with a lateral engagement profile for the longitudinal slot 2 in the hollow profile 1 and inserted together with the antenna wire package. They are also preferably individually replaceable.
  • the plate-shaped inserts could also be attached to the crossbars 4.
  • An alarm lamp 15 is also provided in the upper part of the hollow profile 1. This is simply attached to the hollow profile 1 by snapping it into the longitudinal slot 2 from below.
  • the hollow profile 1 preferably has a triangular cross-sectional shape. This proves to be advantageous if e.g. a customer bumps into the antenna with a shopping cart because the impact is then deflected sideways.
  • the triangular cross-sectional shape also gives the antenna according to the invention an optically appealing appearance.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Automation & Control Theory (AREA)
  • Computer Security & Cryptography (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Support Of Aerials (AREA)
  • Burglar Alarm Systems (AREA)

Abstract

The antenna has a hollow profile (1) which accepts an antenna wire (3) and has an insertion shape and a longitudinal slot (3), through which the antenna wire can be inserted into the hollow profile in its defined shape. The antenna wire is made as a fixed shape insertion element. The longitudinal slot in the hollow profile is at least partially closed by a closure shape (11). The hollow profile has two mutually parallel arms with transverse webs (4) whose ends (5) engage within the longitudinal slots of both arms and can be moved along the arms. The transverse webs are hollow profiles which accept transverse sections of the antenna wire.

Description

TECHNISCHES GEBIETTECHNICAL AREA

Die vorliegende Erfindung betrifft eine Antenne für ein elektronisches Sicherungssystem mit einem Hohlprofil zur Aufnahme eines Antennendrahtes, wie sie im Ausgangsbereich vieler Geschäfte zur Diebstahlsüberwachung montiert ist.The present invention relates to an antenna for an electronic security system with a hollow profile for receiving an antenna wire, as is mounted in the exit area of many shops for theft monitoring.

STAND DER TECHNIKSTATE OF THE ART

Eine Antenne dieser Art ist beispielsweise bekannt aus der US-A-4,251,808, wobei hier das Hohlprofil ein geschlossenes Metallrohr ist. Es werden verschiedene Varianten mit Einfach- und Mehrfachschlaufen des Antennendrahtes beschrieben, wobei bei den Mehrschlaufentypen Querstege für die Aufnahme querverlaufender Abschnitte des Antennendrahtes vorgesehen sind. Das Metallrohr dient vor allem der optischen Verkleidung des Antennendrahtes gegen kapazitive Einstreuungen. Eine ähnliche Konstruktion ist aus der DE-A1-4027710 bekannt. Nachteilig bei diesen Antennen ist vor allem das relativ aufwendige Einbringen des Antennendrahtes sowie ggf. weiterer elektrischer Schaltungselemente in das Metallrohr. Dies gilt insbesondere für die Mehrschlaufentypen, bei denen auch das Anbringen der Querstege einen recht hohen Aufwand erfordert.An antenna of this type is known for example from US-A-4,251,808, in which case the hollow profile is a closed metal tube. Different variants with single and multiple loops of the antenna wire are described, with cross bars being provided in the multi-loop types for receiving transverse sections of the antenna wire. The metal tube is used primarily for the optical cladding of the antenna wire against capacitive interference. A similar construction is known from DE-A1-4027710. A disadvantage of these antennas is above all the relatively complex insertion of the antenna wire and possibly further electrical circuit elements into the metal tube. This applies in particular to the multi-loop types, in which the attachment of the crossbars also requires a great deal of effort.

Aus der US-A-4,872,018 ist eine Mehrschlaufen-Antenne bekannt mit einem als Koaxialkabel ausgeführten Antennendraht in einem Hohlprofil aus Isolierstoff. Indem das Hohlprofil aus zwei Halbschalen zusammengesetzt ist, ist das Einbringen des Antennendrahtes wesentlich erleichtert. Durch die Form der Halbschalen und der zur ihrer Herstellung erforderlichen Werkzeuge bzw. Formen ist die Geometrie der Antenne jedoch festgelegt. Jede Geometrieänderung erfordert neue Werkzeuge oder Formen.From US-A-4,872,018 a multi-loop antenna is known with an antenna wire designed as a coaxial cable in a hollow profile made of insulating material. Because the hollow profile is composed of two half-shells, the insertion of the antenna wire is made considerably easier. Due to the shape of the half-shells and the one required to manufacture them However, the geometry of the antenna is defined for tools and shapes. Every change in geometry requires new tools or shapes.

DARSTELLUNG DER ERFINDUNGPRESENTATION OF THE INVENTION

Es ist Aufgabe der vorliegenden Erfindung, eine Antenne der eingangs genannten Art anzugeben, welche einfach und kostengünstig herstellbar und vor allem leicht zusammensetzbar ist. Darüberhinaus soll auch die geometrische Form der Antenne, vor allem was die Anzahl der Schlaufen anbetrifft, einfach veränderbar sein.It is an object of the present invention to provide an antenna of the type mentioned at the outset, which is simple and inexpensive to manufacture and, above all, easy to assemble. In addition, the geometric shape of the antenna, especially as far as the number of loops is concerned, should be easy to change.

Diese sowie weitere Aufgaben werden erfindungsgemäss gelöst durch eine Antenne, wie sie im Patentanspruch 1 gekennzeichnet ist, wobei vorteilhafte Weiterbildungen in den abhängigen Ansprüchen angegeben sind.According to the invention, these and other objects are achieved by an antenna as characterized in claim 1, advantageous developments being specified in the dependent claims.

Die erfindungsgemäss Antenne weist demnach eine Einschubform sowie einen Längsschlitz auf, durch welchen der Antennendraht in seiner Bestimmungsform in das Hohlprofil einschiebbar ist. Der Antenndraht kann dadurch bereits vor seinem Einbringen in das Hohlprofil definitiv in seine endgültige Form mit der gewünschten Anzahl Schlaufen gelegt oder gebogen werden und, sofern er nicht selbst ausreichend formstabil ist, in dieser Form (Bestimmungsform) auch durch geeignete Hilfsmittel versteift werden. Der Antennendraht erhält deshalb nicht erst durch das Hohlprofil seine endgültige Form. Alle zusätzlich ggf. erforderlichen Schaltungselemtente, wie z.B. Überbrückungswiderstände zwischen einzelnen Schlaufen und/oder Anschlusskabel für eine Alarmlampe, können in das "Antennendrahtpaket" mit einbezogen werden, so dass ein einheitliches Einschubelement für das Hohlprofil entsteht. Damit das Einschieben eines formstabilen Körpers in das Hohlprofil möglich ist, muss dieses eine Einschubform aufweisen, beispielsweise eine U-Form mit zwei zueinander parallelen Schenkeln. Der Längsschlitz im Hohlprofil muss dabei natürlich auf der Innenseite des U-Bogens vorgesehen sein.The antenna according to the invention accordingly has an insertion shape and a longitudinal slot through which the antenna wire in its intended form can be inserted into the hollow profile. The antenna wire can thus definitely be placed or bent into its final shape with the desired number of loops before it is introduced into the hollow profile and, if it is not itself sufficiently dimensionally stable, can also be stiffened in this shape (form of determination) by suitable aids. The antenna wire therefore does not get its final shape from the hollow profile. All additional circuit elements that may be required, such as bridging resistances between individual loops and / or connecting cables for an alarm lamp, can be included in the "antenna wire package" so that a uniform insertion element for the hollow profile is created. So that a dimensionally stable body can be inserted into the hollow profile, it must have an insertion shape, for example a U-shape with two parallel ones Thighs. The longitudinal slot in the hollow profile must of course be provided on the inside of the U-bend.

Flexibilität hinsichtlich Anzahl und Lage allfälliger Querstege und damit auch hinsichtlich der Anzahl Antennenschlaufen, wird im Rahmen der erfindungsgemässen Konstruktion dadurch erreicht, dass die Querstege mit ihren Enden ebenfalls im Längsschlitz des Hohlprofils längsverschiebbar werden. Vorzugsweise sind die Querstege ebenfalls Hohlprofile und weiter vorzugsweise aus zwei Halbprofilen zusammengesetzt. Die Querstege sind entweder aus einem nichtleitenden Material oder an ihren Enden isoliert, damit sie keine Kurzschlussbrücken bilden.Flexibility with regard to the number and position of any crosspieces and thus also with regard to the number of antenna loops is achieved within the framework of the construction according to the invention in that the ends of the crosspieces are also longitudinally displaceable in the longitudinal slot of the hollow profile. The crosspieces are preferably also hollow profiles and more preferably composed of two half profiles. The crosspieces are either made of a non-conductive material or insulated at their ends so that they do not form short-circuit bridges.

Die von dem Hohlprofil umrahmte Fläche kann durch plattenförmige Einsätze geschlossen werden. Dies verhindert zum Einen, dass z.B. Kinder an den Antennen einfach hochklettern und diese umreissen können; die plattenförmigen Einsätze können zum Andern mit Vorteil auch als Werbeflächen benutzt werden. Sie können, wie die Querstege, im Längsschlitz geführt sein.The area framed by the hollow profile can be closed by plate-shaped inserts. On the one hand, this prevents e.g. Children can simply climb up on the antennas and outline them; the plate-shaped inserts can also be used to advantage as advertising space. Like the crossbars, they can be guided in the longitudinal slot.

Weitere vorteilhafte Ausgestaltungen und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung eines Ausführungsbespiels.Further advantageous refinements and advantages of the invention result from the following description of an exemplary embodiment.

KURZE BESCHREIBUNG DER ZEICHNUNGENBRIEF DESCRIPTION OF THE DRAWINGS

Es zeigen:

Fig. 1
Eine Antenne nach der Erfindung
Fig. 2
die Antenne von Fig. 1 in Explosionsdarstellung
Fig. 3
einen der Querstege der Antenne von Fig. 1
Fig. 4
den Fussteil der Antenne von Fig. 1
Fig. 5
einen Horizontalschnitt (I-I) durch die Antenne von Fig. 1.
Show it:
Fig. 1
An antenna according to the invention
Fig. 2
the antenna of Fig. 1 in an exploded view
Fig. 3
one of the crossbars of the antenna of Fig. 1st
Fig. 4
the foot part of the antenna of Fig. 1st
Fig. 5
a horizontal section (II) through the antenna of Fig. 1st

WEGE ZUR AUSFÜHRUNG DER ERFINDUNGWAYS OF CARRYING OUT THE INVENTION

Die in den Figuren dargestellte Antenne weist ein etwa u-förmig gebogenes Hohlprofil 1 mit einem bogeninnenseitigen, durchgehenden Längsschlitz 2 auf. In diesen ist von unten her, wie in Fig. 2 erkennbar, ein Antennendraht bzw. Antennendrahtpaket 3 in das Hohlprofil 1 eingeschoben. Das Antennendrahtpaket 3 wird in den meisten Fällen und wie hier auch dargestellt aus mehreren, vorzugsweise gegeneinander verdrehten Schlaufen eines Antennendrahtes bestehen, wobei dieser gewisse Längenabschnitte durchaus mehrfach durchlaufen kann. Es könnte jedoch genausogut aus lediglich einer einzigen Schlaufe bestehen. In jedem Fall soll das Antennendrahtpaket 3 in sich zumindest soweit formstabil sein, dass es als Ganzes durch den Längsschlitz 2 in das Hohlprofil 1 eingeschoben werden kann. Sofern der Antennendraht nicht genügend Eigensteifigkeit aufweist, kann er durch zusätzliche Hilfmittel versteift und in seiner Bestimmungsform gehalten werden.The antenna shown in the figures has an approximately U-shaped hollow profile 1 with a continuous longitudinal slot 2 on the inside of the arc. An antenna wire or antenna wire package 3 is inserted into the hollow profile 1 from below, as can be seen in FIG. 2. In most cases, and as also shown here, the antenna wire package 3 will consist of several loops of an antenna wire, preferably twisted relative to one another, whereby this length section can certainly run through several times. However, it could just as well consist of just a single loop. In any case, the antenna wire package 3 should at least be dimensionally stable in itself that it can be inserted as a whole through the longitudinal slot 2 into the hollow profile 1. If the antenna wire does not have sufficient inherent rigidity, it can be stiffened by additional aids and kept in its intended form.

Im dargestellten Beispiel sind zur Aufnahme der sich durch die Mehrfachschlaufung ergebenden zwei mittleren horizontalen Abschnitte des Antennendrahtes bzw. Antenndrahtpakets 3 zwei Querstege 4 vorgesehen. Die Querstege 4 sind aus einem oberen und einem unteren Halbprofil zusammengesetzt und können auf diese Weise einfach um die genannten horizontalen Abschnitte herum angebracht werden. Der Antennendraht muss nicht mühsam durch sie hindurchgeführt werden. An ihren Enden sind die Querstege 4 mit einem Eingriffsprofil 5 versehen, mit welchem sie in den Längsschlitz 2 im Hohlprofil 1 ein- und dessen Kanten hintergreifen können. Sie werden zusammen mit dem Antennendrahtpaket in das Hohlprofil 1 eingeschoben. Erkennbar ist die Konstruktion sehr flexibel bezüglich Anzahl und Lage von Querstegen 4.In the example shown, two transverse webs 4 are provided to accommodate the two central horizontal sections of the antenna wire or antenna wire package 3 that result from the multiple loop. The crossbars 4 are composed of an upper and a lower half profile and can be easily attached in this way around the horizontal sections mentioned. The antenna wire does not have to be laboriously passed through it. At their ends, the transverse webs 4 are provided with an engagement profile 5, with which they can engage in the longitudinal slot 2 in the hollow profile 1 and engage behind its edges. They are inserted into the hollow section 1 together with the antenna wire package. The construction can be seen very flexibly with regard to the number and position of crossbars 4.

Gehalten wird das Hohlprofil 1 durch ein Fussteil 6, welches zwei Haltesäulen 7 aufweist und am Boden anschraubbar ist. Die beiden Haltesäulen 7 sind an ihren Aussenseiten, wie die Querstege 4, jeweils mit einem Eingriffsprofil 8 für den Längsschlitz 2 im Hohlprofil 1 versehen. Das Hohlprofil 1 kann deshalb mit seinen beiden senkrechten Schenkeln von oben auf das Fussteil 6 bzw. dessen beide Haltesäulen 7 aufgesteckt werden.The hollow profile 1 is held by a foot part 6, which has two holding columns 7 and can be screwed onto the floor. The two support columns 7 are provided on their outer sides, like the crosspieces 4, each with an engagement profile 8 for the longitudinal slot 2 in the hollow profile 1. The hollow profile 1 can therefore be attached with its two vertical legs from above onto the foot part 6 or its two holding columns 7.

Der Raum zwischen den beiden Haltesäulen 7 des Fussteils 6 lässt sich mit Vorteil als Aufnahme für eine Elektronikeinheit (nicht dargestellt) verwenden. Hierzu können z.B. an den Innenseiten der Haltesäulen 7 Führungsschlitze 9 zum Einstecken von einer oder auch mehreren Leiter- bzw. Montageplatten vorgesehen werden sowie seitliche und obere Wandelemente 10.The space between the two support columns 7 of the foot part 6 can advantageously be used as a receptacle for an electronic unit (not shown). For this, e.g. on the inner sides of the holding columns 7, guide slots 9 are provided for inserting one or more circuit boards or mounting plates, as well as lateral and upper wall elements 10.

Zur optischen Abrundung kann der Längsschlitz 2 im Hohlprofil 1, zumindest dort wo er frei liegt, noch mit einem Abdeckprofil 11 versehen werden, welches wie in Fig. 5 erkennbar in den Schlitz eingebracht werden kann. Wie anhand von Fig. 5 weiter zu erkennen ist, weist das Hohlprofil 1 am Längsschlitz 2 zwei nach innen gebogene Abschnitte 16 auf, welche wesentlich zu seiner Versteifung beitragen.For optical rounding, the longitudinal slot 2 in the hollow profile 1, at least where it is exposed, can also be provided with a cover profile 11 which, as can be seen in FIG. 5, can be introduced into the slot. As can further be seen from FIG. 5, the hollow profile 1 has two inwardly curved sections 16 at the longitudinal slot 2, which contribute significantly to its stiffening.

Die vom Hohlprofil 1 umrahmten und durch die Querstege 4 unterteilten freien Flächen können durch plattenförmige Einsätze verschlossen werden. In Fig. 1 sind solche Einsätze 12 - 14 durch eine Schummerung angedeutet. Die Einsätze können transparent sein, insbesondere jedoch als Flächen für Werbeaufdrucke verwendet werden. Sie werden vorzugsweise, wie die Querstege 4, mit einem seitlichen Eingriffsprofil für den Längsschlitz 2 im Hohlprofil 1 versehen und zusammen mit dem Antennendrahtpaket eingeschoben. Sie sind weiter vorzugsweise einzeln auswechselbar. Alternativ oder ergänzend könnten die plattenförmigen Einsätze auch an den Querstegen 4 befestigt werden.The free areas framed by the hollow profile 1 and subdivided by the transverse webs 4 can be closed by plate-shaped inserts. In Fig. 1 such inserts 12 - 14 are indicated by a shading. The inserts can be transparent, but in particular can be used as areas for advertising prints. Like the crosspieces 4, they are preferably provided with a lateral engagement profile for the longitudinal slot 2 in the hollow profile 1 and inserted together with the antenna wire package. They are also preferably individually replaceable. Alternatively or in addition, the plate-shaped inserts could also be attached to the crossbars 4.

Im oberen Teil des Hohlprofils 1 ist noch eine Alarmlampe 15 vorgesehen. Diese wird einfach durch Einschnappen von unten in den Längsschlitz 2 am Hohlprofil 1 befestigt.An alarm lamp 15 is also provided in the upper part of the hollow profile 1. This is simply attached to the hollow profile 1 by snapping it into the longitudinal slot 2 from below.

Das Hohlprofil 1 weist vorzugsweise eine dreieckige Querschnittsform auf. Diese erweist sich von Vorteil, wenn z.B. ein Kunde mit einem Einkaufswagen gegen die Antenne stösst, weil dann der Aufprall seitlich abgelenkt wird. Durch die dreieckige Querschnittsform erhält die erfindungsgemässe Antenne auch ein optisch ansprechendes Aussehen.The hollow profile 1 preferably has a triangular cross-sectional shape. This proves to be advantageous if e.g. a customer bumps into the antenna with a shopping cart because the impact is then deflected sideways. The triangular cross-sectional shape also gives the antenna according to the invention an optically appealing appearance.

Claims (15)

Antenne für ein elektronisches Sicherungssystem mit einem Hohlprofil (1) zur Aufnahme eines Antennendrahtes (3), dadurch gekennzeichnet, dass das Hohlprofil eine Einschubform sowie einen Längsschlitz (2) aufweist, durch welchen der Antennendraht in seiner Bestimmungsform in das Hohlprofil einschiebbar ist.Antenna for an electronic security system with a hollow profile (1) for receiving an antenna wire (3), characterized in that the hollow profile has an insertion shape and a longitudinal slot (2) through which the antenna wire can be inserted into the hollow profile in its intended form. Antenne nach Anspruch 1, dadurch gekennzeichnet, dass der Antennendraht als formstabiles Einschubelement ausgebildet ist.Antenna according to claim 1, characterized in that the antenna wire is designed as a dimensionally stable insertion element. Antenne nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Längsschlitz im Hohlprofil wenigstens teilweise mit einem ein Verschlussprofil (11) verschlossen ist.Antenna according to claim 1 or 2, characterized in that the longitudinal slot in the hollow profile is at least partially closed with a closure profile (11). Antenne nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Hohlprofil zwei zueinander parallele Schenkel aufweist und dass Querstege (4) vorgesehen sind, welche mit ihren Enden (5) in den Längsschlitz der beiden Schenkel eingreifen und längs dieser Schenkel verschiebbar sind.Antenna according to one of claims 1 to 3, characterized in that the hollow profile has two mutually parallel legs and that transverse webs (4) are provided which engage with their ends (5) in the longitudinal slot of the two legs and are displaceable along these legs. Antenne nach Anspruch 4, dadurch gekennzeichnet, dass die Querstege ebenfalls als Hohlprofile und zur Aufnahme von querverlaufenden Abschnitten des Antennendrahtes ausgebildet sind.Antenna according to claim 4, characterized in that the transverse webs are also designed as hollow profiles and for receiving transverse sections of the antenna wire. Antenne nach Anspruch 5, dadurch gekennzeichnet, dass die Querstege aus einem oberen und einem unteren Halbprofil zusammengesetzt sind.Antenna according to claim 5, characterized in that the crossbars are composed of an upper and a lower half profile. Antenne nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass zum wengistens teilweisen Ausfüllen der von dem Hohlprofil umrahmten Fläche plattenförmige Einsätze (12-14) vorgesehen sind.Antenna according to one of claims 1 to 6, characterized in that plate-shaped inserts (12-14) are provided for partially filling the area framed by the hollow profile. Antenne nach Anspruch 7, dadurch gekennzeichnet, dass die plattenförmigen Einsätze in den Längsschlitz im Hohlprofil eingreifen und in diesem geführt sind.Antenna according to claim 7, characterized in that the plate-shaped inserts engage in the longitudinal slot in the hollow profile and are guided therein. Antenne nach den Ansprüchen 4 und 7 oder 8, dadurch gekennzeichnet, dass die Querstreben zur Halterung der plattenförmigen Einsätze ausgebildet sind.Antenna according to claims 4 and 7 or 8, characterized in that the cross struts are designed to hold the plate-shaped inserts. Antenne nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, das Hohlprofil zwei zueinander parallele Schenkel aufweist und dass ein am Boden befestigbares Fussteil (6) mit zwei senkrecht nach oben ragenden Haltesäulen (7) vorgesehen ist, welche derart mit einem Eingriffsprofil (8) für den Längsschlitz in den genannten Schenkeln des Hohlprofils versehen sind, dass diese von oben auf die Haltesäulen aufsteckbar und dadurch mechanisch fixiert sind.Antenna according to one of claims 1 to 9, characterized in that the hollow profile has two mutually parallel legs and that a foot part (6) which can be fastened to the floor is provided with two holding columns (7) which project vertically upwards and which have an engagement profile (8) in this way. are provided for the longitudinal slot in the legs of the hollow profile mentioned that they can be plugged onto the holding columns from above and are thereby mechanically fixed. Antenne nach Anspruch 10, dadurch gekennzeichnet, dass der Raum zwischen den beiden Haltesäulen als Aufnahme für eine Elektronikeinheit ausgebildet ist.Antenna according to claim 10, characterized in that the space between the two support columns is designed as a receptacle for an electronic unit. Antenne nach Anspruch 11, dadurch gekennzeichnet, dass mindestens eine Leiter- oder Montageplatte in entsprechende Führungsschlitze (9) in den Haltesäulen einsteckbar ist.Antenna according to Claim 11, characterized in that at least one printed circuit board or mounting plate can be inserted into corresponding guide slots (9) in the holding columns. Antenne nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass eine Alarmlampe (15) vorgesehen ist, welche sich durch Einschnappen in den Längsschlitz am Hohlprofil befestigen lässt.Antenna according to one of claims 1 to 12, characterized in that an alarm lamp (15) is provided which can be attached to the hollow profile by snapping into the longitudinal slot. Antenne nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, dass das Hohlprofil dreieckig ist.Antenna according to one of claims 1 to 13, characterized in that the hollow profile is triangular. Antenne nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, dass das Hohlprofil am Längsschlitz zwei nach innen gebogene Abschnitte (16) aufweist.Antenna according to one of claims 1 to 13, characterized in that the hollow profile at the longitudinal slot has two inwardly curved sections (16).
EP95810549A 1994-09-23 1995-09-05 Antenna for an electronic surveillance system Withdrawn EP0703637A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2899/94 1994-09-23
CH289994 1994-09-23

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EP0703637A1 true EP0703637A1 (en) 1996-03-27

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EP95810549A Withdrawn EP0703637A1 (en) 1994-09-23 1995-09-05 Antenna for an electronic surveillance system

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EP (1) EP0703637A1 (en)
JP (1) JPH08321717A (en)

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WO2005057725A1 (en) * 2003-12-06 2005-06-23 Telegesis (Uk) Ltd Radio frequency antennae
DE102005020842A1 (en) * 2005-05-02 2006-11-09 Dekoplast Gmbh Housing for transponder antenna e.g. for identification of goods, has two spaced retaining rails and widow foil with width matched to rail spacing
NL1033629C2 (en) * 2007-04-02 2008-10-06 Nedap Nv Modular multifunctional antenna frame for an anti-shoplifting system.
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Publication number Priority date Publication date Assignee Title
WO2003003323A1 (en) * 2001-06-29 2003-01-09 Sensormatic Electronics Corporation Electronic article surveillance antenna for attachment to a vertical structure
WO2005057725A1 (en) * 2003-12-06 2005-06-23 Telegesis (Uk) Ltd Radio frequency antennae
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DE202012008852U1 (en) * 2012-09-17 2013-12-18 Checkpoint Systems, Inc. antenna device
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US9461354B2 (en) 2012-09-17 2016-10-04 Checkpoint Systems, Inc. Single piece antenna device

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