EP0363625B1 - Fence post - Google Patents

Fence post Download PDF

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Publication number
EP0363625B1
EP0363625B1 EP89116222A EP89116222A EP0363625B1 EP 0363625 B1 EP0363625 B1 EP 0363625B1 EP 89116222 A EP89116222 A EP 89116222A EP 89116222 A EP89116222 A EP 89116222A EP 0363625 B1 EP0363625 B1 EP 0363625B1
Authority
EP
European Patent Office
Prior art keywords
fence post
post according
switch
tube
fixed
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
EP89116222A
Other languages
German (de)
French (fr)
Other versions
EP0363625A2 (en
EP0363625A3 (en
Inventor
Dietrich Dipl.-Ing. Welschof
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.)
Wego-System Sportstatteneinrichtungen & Co Kg GmbH
Original Assignee
Wego-System Sportstatteneinrichtungen & Co Kg GmbH
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
Application filed by Wego-System Sportstatteneinrichtungen & Co Kg GmbH filed Critical Wego-System Sportstatteneinrichtungen & Co Kg GmbH
Publication of EP0363625A2 publication Critical patent/EP0363625A2/en
Publication of EP0363625A3 publication Critical patent/EP0363625A3/en
Application granted granted Critical
Publication of EP0363625B1 publication Critical patent/EP0363625B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00Burglar, theft or intruder alarms
    • G08B13/02Mechanical actuation
    • G08B13/12Mechanical actuation by the breaking or disturbance of stretched cords or wires
    • G08B13/122Mechanical actuation by the breaking or disturbance of stretched cords or wires for a perimeter fence

Definitions

  • the invention relates to a fence post according to the preamble of claim 1.
  • the spring elements are arranged freely accessible below the boom in two disclosed solutions.
  • a single compression spring is arranged within the fence post tube. In all cases, the switch is provided in a fixed position within the fence pole tube.
  • a fence is also known (GB-A 2 171 232), which has a horizontal contact strip above the fields between two posts, which can deflect under pressure and give a signal when a trigger is applied to the upper edge of a fence field.
  • the horizontal contact strip is freely stored on a fence field and is not connected to a fence post.
  • the invention has for its object to form a fence post of the type presumed to be known so that it responds reliably to different loading conditions, that its structure is not recognizable from the outside, and that it does not pass even when the structure is known simple measures can be taken out of operation, the parts relevant for the response should be arranged protected against the weather.
  • the boom according to the invention is held in its normal position under spring force. It cannot be seen from the outside of the fence post that its boom can move out of its normal position under the action of a lateral force and thereby trigger a fault signal. Unauthorized persons who want to climb over a fence equipped with such fence posts and brackets will therefore act impartially and do not exercise particular caution.
  • the construction according to the invention has the advantage of a high sensitivity.
  • the functionally essential parts are safely protected against the effects of the weather in the interior of the fence post.
  • the cap that covers the upper edge of the fence post tube securely covers all sensitive parts.
  • the fence post has a fence post tube 2, which is hollow and is closed at its upper end by an end plate 8 firmly connected to the fence post tube.
  • the upper end of the fence post tube and the end plate 8 are overlapped by a cap 3 to which two V-shaped brackets 1 are welded.
  • Two pins 4 and 5 extending parallel to the longitudinal axis 17 of the fence post tube 2 are also provided on the cap 3. These pins pass through two stepped through bores 9 and 10, which are provided within the end plate and maintain a distance from the central axis 17.
  • the compression springs 14 and 13 With its upper end, the compression springs 14 and 13 rest on disks 12 and 11, which are displaceable in the longitudinal direction on the pins 4 and 5.
  • the compression springs 14 and 13 press the disks 12 and 11 against the shoulders of the stepped bores 10 and 9 and hold the cap 3 with the brackets welded to them in their normal position.
  • the actuating element 7 of the switch rests on the underside of the fixed end plate 8.
  • the two pins 4 and 5 are arranged in a plane which runs parallel to two sides and perpendicular to the other two sides of the rectangular fence post tube 2 shown.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fencing (AREA)

Description

Die Erfindung betrifft einen Zaunpfahl nach dem Oberbegriff des Anspruchs 1.The invention relates to a fence post according to the preamble of claim 1.

Bei einem bekannten Zaunpfahl dieser Art (DE-A 27 17 906) sind bei zwei geoffenbarten Lösungen die Federelemente frei zugänglich unterhalb der Ausleger angeordnet. Bei einer dritten Ausführungsform ist eine einzige Druckfeder innerhalb des Zaunpfahlrohrs angeordnet. Der Schalter ist in allen Fällen ortsfest innerhalb des Zaunpfahlrohres vorgesehen.In a known fence post of this type (DE-A 27 17 906), the spring elements are arranged freely accessible below the boom in two disclosed solutions. In a third embodiment, a single compression spring is arranged within the fence post tube. In all cases, the switch is provided in a fixed position within the fence pole tube.

Sämtliche geoffenbarten Lösungen sind vergleichsweise leicht außer Betrieb zu nehmen. Es genügt hierzu, eine unterhalb des Auslegers befindliche Platte oder die Ausleger selbst gegen die Oberkante des Zaunpfahlrohrs zu verspannen, mit der Folge, daß dann eine Ausweichbewegung der Ausleger nicht mehr möglich und eine Signalgabe ausgeschlossen ist.All of the disclosed solutions are comparatively easy to take out of operation. It is sufficient to clamp a plate located below the bracket or the bracket itself against the upper edge of the fence post tube, with the result that an evasive movement of the bracket is then no longer possible and a signal is excluded.

Es ist ferner ein Zaun bekannt (GB-A 2 171 232), der oberhalb der Felder zwischen jeweils zwei Pfosten eine horizontale Kontaktleiste aufweist, welche unter Druck nach unten ausweichen und bei Anlage eines Auslösers auf der Oberkante eines Zaunfeldes ein Signal geben kann. Die horizontale Kontaktleiste ist frei jeweils auf einem Zaunfeld gelagert und nicht mit einem Zaunpfahl verbunden.A fence is also known (GB-A 2 171 232), which has a horizontal contact strip above the fields between two posts, which can deflect under pressure and give a signal when a trigger is applied to the upper edge of a fence field. The horizontal contact strip is freely stored on a fence field and is not connected to a fence post.

Schließlich ist es bekannt (DE-U 86 03 581), den Ausleger um eine Achse verschwenkbar an dem Zaunpfahlrohr zu befestigen. In das Innere des Zaunpfahlrohrs ragt dabei ein Vorsprung des Auslegers hinein, der ein Scherelement für einen Signaldraht bildet. Für die Signalauslösung muß bei dem bekannten Signal der Signaldraht abgeschert werden, damit ein Signal erzeugt wird.Finally, it is known (DE-U 86 03 581) to fasten the boom pivotable about an axis to the fence post tube. A projection of the arm projects into the interior of the fence pole tube and forms a shear element for a signal wire. For the signal triggering, the signal wire of the known signal must be sheared off so that a signal is generated.

Diese bekannte Lösung erweist sich insoweit als nachteilig, als für die Erzeugung eines Signals vergleichsweise große Auslösekräfte aufgebracht werden müssen. So müssen die Reibkräfte der Schwenklagerung überwunden werden und zusätzlich der Signaldraht abgeschert werden. Auch diese bekannte Vorrichtung ist nicht ausreichend empfindlich.This known solution proves to be disadvantageous in that comparatively large triggering forces have to be applied to generate a signal. The frictional forces of the swivel bearing must be overcome and the signal wire must also be sheared off. This known device is also not sufficiently sensitive.

Darüber hinaus erweist es sich bei dem zuletzt beschriebenen Zaunpfahl ebenso wie bei dem eingangs erläuterten Zaunpfahl als nachteilig, daß diesen Lösungen von außen ohne weiteres ansehbar ist, daß sie eine Signaleinrichtung enthalten. Darüber hinaus ist es nachteilig, daß die maßgeblichen Teile Witterungseinflüssen ausgesetzt sind, mit der Folge, daß die Ansprechempfindlichkeit wegen Verschmutzung und Korrosion im Laufe der Zeit leidet.In addition, it turns out to be disadvantageous in the last-described fence post as well as in the fence post explained at the outset that these solutions can easily be seen from the outside that they contain a signaling device. In addition, it is disadvantageous that the relevant parts are exposed to the weather, with the result that the responsiveness due to dirt and corrosion suffers over time.

Ausgehend von dem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, einen Zaunpfahl der als bekannt vorausgesetzten Art so auszubilden, daß er zuverlässig auf unterschiedliche Belastungszustände anspricht, daß sein Aufbau nicht von außen erkennbar ist, und daß er selbst bei Kenntnis des Aufbaus nicht durch einfache Maßnahmen außer Betrieb genommen werden kann, wobei die für das Ansprechen maßgeblichen Teile gegen Witterungseinflüsse geschützt angeordnet sein sollen.Based on the prior art, the invention has for its object to form a fence post of the type presumed to be known so that it responds reliably to different loading conditions, that its structure is not recognizable from the outside, and that it does not pass even when the structure is known simple measures can be taken out of operation, the parts relevant for the response should be arranged protected against the weather.

Die Lösung dieser Aufgabe erfolgt mit den Merkmalen des Kennzeichnungsteils von Anspruch 1.This object is achieved with the features of the labeling part of claim 1.

Weitere bevorzugte Ausgestaltungen der Erfindung sind in den Unteransprüchen beschrieben.Further preferred embodiments of the invention are described in the subclaims.

Der erfindungsgemäße Ausleger wird unter Federkraft in seiner Normallage gehalten. Von außen ist dem Zaunpfahl nicht anzusehen, daß sich sein Ausleger unter seitlicher Krafteinwirkung aus seiner Normalstellung bewegen kann und dabei ein Störungssignal auslöst. Unbefugte, die einen mit derartigen Zaunpfählen und Auslegern ausgestatteten Zaun übersteigen wollen, werden deshalb unbefangen vorgehen und nicht besondere Vorsicht walten lassen.The boom according to the invention is held in its normal position under spring force. It cannot be seen from the outside of the fence post that its boom can move out of its normal position under the action of a lateral force and thereby trigger a fault signal. Unauthorized persons who want to climb over a fence equipped with such fence posts and brackets will therefore act impartially and do not exercise particular caution.

Die erfindungsgemäße Konstruktion hat den Vorteil einer hohen Ansprechempfindlichkeit. Dabei sind die funktionswesentlichen Teile gegen Witterungseinflüsse sicher geschützt im Inneren des Zaunpfahls angeordnet. Die den oberen Rand des Zaunpfahlrohrs übergreifende Kappe deckt alle empfindlichen Teile sicher ab.The construction according to the invention has the advantage of a high sensitivity. The functionally essential parts are safely protected against the effects of the weather in the interior of the fence post. The cap that covers the upper edge of the fence post tube securely covers all sensitive parts.

Nachstehend wird eine bevorzugte Ausführungsform der Erfindung anhand der Zeichnung im einzelnen beschrieben. Es zeigen:

Figur 1 -
einen Längsschnitt durch das obere Ende eines Zaunpfahls mit Doppelausleger,
Figur 2 -
einen Schnitt entlang Schnittebenen II-II in Figur 1, wobei Einzelheiten zum besseren Verständnis weggelassen sind.
A preferred embodiment of the invention is described in detail below with reference to the drawing. Show it:
Figure 1 -
a longitudinal section through the upper end of a fence post with double boom,
Figure 2 -
a section along section planes II-II in Figure 1, details being omitted for better understanding.

Der Zaunpfahl besitzt ein Zaunpfahlrohr 2, das hohl ausgebildet ist und an seinem oberen Ende von einer fest mit dem Zaunpfahlrohr verbundenen Abschlußplatte 8 verschlossen ist. Das obere Ende des Zaunpfahlrohrs und die Abschlußplatte 8 werden übergriffen von einer Kappe 3, an der zwei V-förmig angeordnete Ausleger 1 angeschweißt sind. An der Kappe 3 sind ferner zwei parallel sich zur Längsachse 17 des Zaunpfahlrohrs 2 erstreckende Zapfen 4 und 5 vorgesehen. Diese Zapfen durchsetzen zwei abgestufte Durchgangsbohrungen 9 und 10, die innerhalb der Abschlußplatte vorgesehen sind und einen Abstand von der Mittelachse 17 einhalten. Am unteren Ende der Zapfen 4 und 5 befinden sich Stützbunde 16 und 15, an denen Druckfedern 14 bzw. 13 mit einem Ende anliegen.The fence post has a fence post tube 2, which is hollow and is closed at its upper end by an end plate 8 firmly connected to the fence post tube. The upper end of the fence post tube and the end plate 8 are overlapped by a cap 3 to which two V-shaped brackets 1 are welded. Two pins 4 and 5 extending parallel to the longitudinal axis 17 of the fence post tube 2 are also provided on the cap 3. These pins pass through two stepped through bores 9 and 10, which are provided within the end plate and maintain a distance from the central axis 17. At the lower end of the pins 4 and 5 there are support collars 16 and 15, on which compression springs 14 and 13 rest with one end.

Mit ihrem oberen Ende liegen die Druckfedern 14 und 13 an Scheiben 12 und 11 an, die in Längsrichtung auf den Zapfen 4 und 5 verschiebbar sind. Die Druckfedern 14 und 13 drücken die Scheiben 12 und 11 gegen die Schultern der abgesetzten Bohrungen 10 und 9 und halten die Kappe 3 mit den daran angeschweißten Auslegern in ihrer Normalstellung.With its upper end, the compression springs 14 and 13 rest on disks 12 and 11, which are displaceable in the longitudinal direction on the pins 4 and 5. The compression springs 14 and 13 press the disks 12 and 11 against the shoulders of the stepped bores 10 and 9 and hold the cap 3 with the brackets welded to them in their normal position.

An der Verlängerung des Zapfens 4 ist ein Schalter 6 befestigt, der ein Betätigungselement 7 aufweist. Das Betätigungselement 7 des Schalters liegt an der Unterseite der ortsfesten Abschlußplatte 8 an.A switch 6, which has an actuating element 7, is attached to the extension of the pin 4. The actuating element 7 of the switch rests on the underside of the fixed end plate 8.

Jegliche seitliche Belastung des Auslegers 1 führt zu einer Lageveränderung des Schalters 6 gegenüber der ortsfesten Abschlußplatte 9. Hierdurch wird unter Vermittlung des Betätigungselements 7 eine Veränderung in einem elektrischen Leitersystem erzeugt, in dessen Stromkreis der Schalter 6 eingeschaltet ist. Diese elektrische Veränderung wird zur Erzeugung eines Störungssignals verwendet.Any lateral load on the arm 1 leads to a change in the position of the switch 6 relative to the fixed end plate 9. This, with the intermediary of the actuating element 7, produces a change in an electrical conductor system in the circuit of which the switch 6 is switched on. This electrical change is used to generate an interference signal.

In der Zeichnung sind die beiden Zapfen 4 und 5 in einer Ebene angeordnet, die parallel zu zwei Seiten und senkrecht zu den beiden anderen Seiten des dargestellten rechteckigen Zaunpfahlrohrs 2 verläuft. In der Praxis hat es sich wegen der beengten Platzverhältnisse im Zaunpfahlrohr als zweckmäßig erwiesen, die Zapfen 4 und 5 in einer diagonal verlaufenden Ebene anzuordnen. Wesentlich ist lediglich, daß die Zapfen einen Abstand von der Längsachse 17 einhalten.In the drawing, the two pins 4 and 5 are arranged in a plane which runs parallel to two sides and perpendicular to the other two sides of the rectangular fence post tube 2 shown. In practice, it has proven expedient because of the limited space in the fence post tube to arrange the pins 4 and 5 in a diagonally extending plane. It is only essential that the pins keep a distance from the longitudinal axis 17.

Claims (11)

  1. Fence post with an extension arm which is movably fixed thereon and which when deviated from its predetermined normal position serves to release a signal wherein at the lower end of the extension arm there is a switch or the like mounted inside the fence post tube and the extension arm is held in its normal position by at least one spring element and can be shifted by the signal released by the switch on overcoming the spring force, characterised in that at the lower end of the extension arm (1) there is a cap (3) engaging over the upper end of the fence post tube (2) and the switch (6) is connected fixed to the cap (3) and the operating element (7) of the switch (6) adjoins the underneath of a locally fixed closure plate (8) which is mounted underneath the cap (3) and connected to the fence post (2).
  2. Fence post according to claim 1 characterised in that the spring element is a compression spring (13;14).
  3. Fence post according to one or more of claims 1 and 2 characterised in that at least one stud (4;5) extending into the fence post tube (2) is fixed on the extension arm (1) and has a support collar (16;15) for one end of a compression spring (14;13) whose other end is supported on a counter surface connected fixed to the fence post.
  4. Fence post according to claim 3 characterised in that two studs (4,5) are provided spaced from the centre of the fence tube and enclosed by a compression spring.
  5. Fence post according to one or more of claims 1 to 4 characterised in that the switch (6) is fixed on one of the two studs (4;5).
  6. Fence post according to one or more of claims 1 to 5 characterised in that at least one stud (4;5) is fixed on the cap (3) which engages over the top end of the fence post tube (2).
  7. Fence post according to one or more of claims 1 to 6 characterised in that two full length bores (9;10) which re each stepped are provided in the closure plate (8).
  8. Fence post according to one or more of claims 1 to 7 characterised in that the compression springs (13;14) of the studs (5;4) are supported by their upper ends on the shoulders of the recessed bores (9;10).
  9. Fence post according to claim 8, characterised in that longitudinally displaceable discs (11;12) are mounted on the studs between the upper ends of the compression springs (13;14) and the shoulders of the full length bores.
  10. Fence post according to one or more of claims 1 to 9 characterised in that the studs (4;5) extend parallel to the longitudinal axis (17) of the fence post tube (2).
  11. Fence post according to one or more of claims 1 to 10 characterised in that the switch (6) or the like adjoins with its movable contact (7) the underneath of the closure plate (8) in the centre thereof.
EP89116222A 1988-10-13 1989-09-02 Fence post Expired - Lifetime EP0363625B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8812845U 1988-10-13
DE8812845U DE8812845U1 (en) 1988-10-13 1988-10-13 fence post

Publications (3)

Publication Number Publication Date
EP0363625A2 EP0363625A2 (en) 1990-04-18
EP0363625A3 EP0363625A3 (en) 1990-10-10
EP0363625B1 true EP0363625B1 (en) 1995-03-15

Family

ID=6828806

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89116222A Expired - Lifetime EP0363625B1 (en) 1988-10-13 1989-09-02 Fence post

Country Status (2)

Country Link
EP (1) EP0363625B1 (en)
DE (2) DE8812845U1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL99266A (en) * 1991-08-21 1996-01-19 Trans Security Systems 1990 Lt Intrusion detecting apparatus
US5438316A (en) * 1991-11-04 1995-08-01 Detek Security Systems, Inc. Fence alarm system with swiveling posts
US7880630B2 (en) 2004-07-09 2011-02-01 Compound Security Systems Limited Security system for a boundary
CN102535948B (en) * 2011-12-20 2014-04-09 张朝峰 Manufacturing method of anti-climb alarm isolation fence

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2717906A1 (en) * 1977-04-22 1978-10-26 Ernst Blaser Security alarm for fence - has switch tripped by movement of spring supported Y=shaped top rail
DE3010522A1 (en) * 1980-03-19 1981-09-24 Ernst 4200 Oberhausen Blaser Security fence back-up alarm mesh - has connection to Y=shaped arm and movement indicator initiating alarm when moved vertically
GB2171232A (en) * 1985-02-02 1986-08-20 Pace Controls Co Limited Disturbance sensors for barriers

Also Published As

Publication number Publication date
EP0363625A2 (en) 1990-04-18
DE8812845U1 (en) 1988-12-01
EP0363625A3 (en) 1990-10-10
DE58909108D1 (en) 1995-04-20

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