EP0154003B1 - Aerial - Google Patents

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Publication number
EP0154003B1
EP0154003B1 EP84114504A EP84114504A EP0154003B1 EP 0154003 B1 EP0154003 B1 EP 0154003B1 EP 84114504 A EP84114504 A EP 84114504A EP 84114504 A EP84114504 A EP 84114504A EP 0154003 B1 EP0154003 B1 EP 0154003B1
Authority
EP
European Patent Office
Prior art keywords
antenna
clamping element
carrier
mast
antenna mast
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
Application number
EP84114504A
Other languages
German (de)
French (fr)
Other versions
EP0154003A1 (en
Inventor
Hans Margreiter
Rudolf Friedl
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.)
Kathrein SE
Original Assignee
Kathrein Werke KG
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 Kathrein Werke KG filed Critical Kathrein Werke KG
Priority to AT84114504T priority Critical patent/ATE41560T1/en
Publication of EP0154003A1 publication Critical patent/EP0154003A1/en
Application granted granted Critical
Publication of EP0154003B1 publication Critical patent/EP0154003B1/en
Expired legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/32—Adaptation for use in or on road or rail vehicles

Definitions

  • the invention relates to an antenna for caravans, boats or similar covered vehicles or rooms according to the preamble of claim 1.
  • Antennas of this type have become known, for example, as “caravan antennas, but are also intended and used, for example, for motor homes, buses, trucks, boats or similar covered land or water vehicles.
  • the antenna mast is generally arranged such that it can be adjusted in height from the interior of the caravan between a so-called retracted transport position and an extended operating position, as is known, for example, from DE-U-8 300 035.
  • the antenna attached to the upper end of the antenna mast is retracted substantially up to just above the caravan roof, whereas in the so-called operating position, the antenna is extended high above the caravan roof to achieve optimal television or radio reception.
  • Such an antenna arrangement has become known, for example, from the brochure from Kathrein, “Caravan-Antenne •, HD 35,” and consists of a dipole antenna arranged horizontally and transversely to the antenna mast and a logarithmic-periodic antenna that can be aligned in the receiving direction and that is in a protective plastic housing is housed.
  • Antenna devices of this type, in particular with the plastic protective housing, have hitherto proven themselves very well in practice, since this largely prevents the logarithmic-periodic antenna, which is very sensitive to weather influences, that is to say climatic influences and mechanical stresses.
  • the use of such a protective housing does not form part of the present invention.
  • the holding device For fastening to the antenna mast, the holding device comprises an anchoring part which is connected to the antenna and on which a clamp encompassing the antenna mast is tightened by means of wing screws.
  • the above-described holding device for the caravan antenna with the openly accessible wing screws can also be removed at any time. It has been shown in the past that these antennas are increasingly being quickly and easily dismantled and stolen, especially at campsites at night or after leaving the caravan. An anti-theft device has therefore already been proposed in US-A-4137 521, which automatically triggers an alarm provided via an electrical contact device when the antenna is mounted. -
  • Object of the present invention is based on the above-mentioned prior art to provide a simple and extremely secure holding device for an antenna attached to an extendable antenna mast for caravans, boats or similar covered vehicles or rooms, so that the antenna in the unguarded state against theft is secured.
  • the object is achieved according to the invention in accordance with the features specified in the characterizing part of claim 1.
  • Advantageous embodiments of the invention are specified in the subclaims.
  • the inventive design of the holding device for the first time creates an theft-proof attachment of an antenna to an extendable antenna mast in an incredibly simple manner.
  • This is essentially achieved according to the invention in that the antenna is only attached via a vertically oriented screw attachment, the actuator of which is only accessible from below. If the antenna is then lowered into the transport position, it is impossible for unauthorized persons to remove it from the antenna mast again, because in the lowered transport position, for example, a screwdriver cannot be used to loosen the vertical screws due to the lack of space between the roof and the antenna.
  • the holding device consists of an annular support as an anchoring part and a fitting member or tensioning element interacting therewith, the pressure and contact surface formed between the annular support and the tensioning element tapering obliquely in vertical section onto the antenna mast, that the clamping element is kept biased by the vertical fastening device on the antenna mast.
  • this enables the antenna to be securely fastened in a force-locking manner to the antenna mast.
  • a clamping device for attaching support arms, flanges and traverses or the like to rods has become known, for example from DD-A-75 675, in which a prismatic and / or ring-shaped body is provided, the pressure surface of which is inclined to a radial one To achieve contact pressure when tightening a screw.
  • pipe and cable clamp consists of an elastic flange ring with angled active surfaces and. a screw which can be inserted and screwed tightly over the oblique effective surfaces, whereby the clamping ring is tightened to a smaller diameter on the inside as the screw is tightened increasingly.
  • prismatic or oblique active surfaces of this type are known per se, there is no reference from the two aforementioned documents to an anti-theft device for an antenna, for example from caravans.
  • annular carrier is formed with a radial projection for receiving the tensioning element, wherein according to claim 4 has proven to be favorable, the inclined towards the antenna mast pressure and contact surface on the radial Approach to be provided at the bottom.
  • the radial extension of the ring-shaped carrier can be provided with two vertical side walls, between which the fitting part or tensioning element lying against the antenna mast is arranged, the pressure and contact surfaces generating the radial contact force being formed on the inner side walls of the extension.
  • the frictional attachment of the antenna is further improved in a particularly preferred embodiment of the invention according to claim 8 in that the protective housing, preferably made of plastic, encloses the neck of the ring-shaped carrier and furthermore in the extension of the vertical screw fastening in the lower part of the protective housing, a corresponding insertion opening for the screw fastening is provided.
  • the protective housing preferably made of plastic
  • the screw fastening for example in the form of a screw, is not visually shielded in such a way that unauthorized removal of the antenna is impossible in the retracted position of the antenna mast.
  • interlocking recesses and radial projections are provided on the contact surface between the clamping element and the antenna mast, so that when tightening a screw as a fastening device, the projections in the engage corresponding depressions, so that the ring-shaped carrier and the tensioning element are also non-detachably attached to the antenna mast.
  • the arrangement known from GB-A-1 067 091 relates only to a pipe connection construction in which an angled screw of a vertical support can be hooked or inserted and firmly tightened into a vertical support via a jacket opening.
  • Claims 10 to 12 relate to a particularly simple and therefore advantageous further development of the anti-theft antenna fastening device, which can be manufactured in a simple manner by stamping and embossing sheet metal parts.
  • the tensioning element in this embodiment consists of rubber or a rubber-like material and is held by the vertical tensioning device with cross-sectional widening in the radial direction too biased to the antenna mast. In this way, too, the vertically introduced contact forces are deflected in the horizontal direction by the tensioning element, whereby a secure non-positive connection and attachment to the antenna mast can thereby be achieved.
  • DE-C 941 577 discloses a coupling for releasably connecting parts, in which radial forces for holding the rod can be generated at the connection point by axially pressing a rubber ring between a cup and a rod.
  • This fundamentally known device for a deliberately releasable clutch relates to a completely different area of application compared to the present anti-theft device.
  • an antenna 1 is shown, in particular for use on a caravan, which consists of a dipole antenna 3 arranged transversely to the mast and a plastic protective housing 5 oriented in the receiving direction, in which a logarithmic-periodic antenna is exposed to weather influences and mechanical stresses is installed.
  • the antenna 1 is fastened via anchoring part 7 firmly connected to it at the upper end of an antenna mast 9 which is adjustable in height.
  • the antenna mast is, for example, height-adjustable from the inside of a caravan and can be lowered from an extended operating position into a retracted transport position. In the so-called transport position, the antenna 1 is located immediately above the roof of a caravan, a bottom, etc., which is not shown in detail.
  • FIG. 2 in which the holding device of the antenna 1 on the mast 9 is shown schematically in a partial vertical section.
  • the holding device comprises a cap-shaped support 11, which is firmly connected to the antenna 1, as an anchoring part 7 and which, with its open end face downward, points onto the upper end of the antenna dimension stes 9 is attached.
  • the cap-shaped carrier 11 is provided with an inner circumferential shoulder 13, which comes to rest on the upper circumferential edge 15 of the antenna mast 9.
  • the top view of the cap-shaped support 11 is provided in a partial circumferential area with a radial projection 17, the downward-facing end face of which is designed as a pressure and contact surface 19 that runs obliquely on the antenna mast 9 in vertical section.
  • a fitting member or clamping element 23 with a substantially vertical section wedge-shaped cross section is arranged, which has a vertical screw 25 in a vertical bore 27 in the clamping element 23 and one above it Extension introduced blind bore 29 is firmly connected to the front shoulder 17 of the carrier 11.
  • an insertion opening 31 is provided in the lower wall of the plastic protective housing 5 in the direct vertical extension below the fastening device in the form of a screw 25.
  • the cap-shaped support 11 For the theft-proof fastening of the antenna 1, only the cap-shaped support 11 has to be placed on the upper end of the antenna mast 9 with the screw 25 not firmly attached up to the stop on the inner shoulder 13. The screw 25 is then tightened via the insertion opening 31 by means of a screwdriver.
  • the clamping element 23 is pressed not only in the vertical direction onto the radial extension 17, but also in the form of a wedge in the radial direction onto the antenna mast 9 , so that a firm and secure non-positive fit of the carrier 11 on the antenna mast 9 is achieved.
  • the inclined pressure and contact surface 19 deflects the vertical forces introduced via the screw 25 by 90 ° in the radial direction onto the antenna mast 9.
  • the radial extension 17 is also surrounded by the plastic protective housing 5, it is completely ensured that the antenna 1 cannot be removed in the so-called transport position by unauthorized persons, since in this so-called transport position the antenna is, for example, on a Caravan is lowered to just above the roof, so that there is no room for loosening the screw 25.
  • the anti-theft device can be secured simply by lowering the antenna 1 into the transport position.
  • the bore 27 in the tensioning element 23 can have a larger inner diameter than the outer diameter of the screw 25 passing through it, so that when tightening the tensioning element 23 can execute a certain radial movement in the direction of the antenna mast 9 without hindrance.
  • a radial elongated hole is also possible. As a result, the radial contact forces on the antenna mast 9 can become even more effective.
  • depressions or recesses 35 or projections 37 can be provided on the inner surface 33 of the tensioning element 23 and / or on the associated partial circumferential region 21 of the antenna mast, which alternately interlock.
  • the tensioning element 23 is then pretensioned in a wedge shape onto the antenna mast 9, the respective projections 37 then penetrating into the associated recesses 35 and thereby contributing not only to the production of a positive, but also a form-fitting fastening.
  • FIGS. 3 and 4 in which a further exemplary embodiment is shown, the same parts being provided with the same reference numbers as in FIGS. 1 and 2.
  • the radial extension 17 of the carrier 11 is open at its end facing the protective housing 5.
  • the pressure and contact surface 19 on the radial shoulder 17 of the carrier 11 is introduced in the form of grooves 45 on the inner sides 41 of the vertical side walls 43 of the radial shoulder 17 in the form of grooves obliquely on the antenna mast 9.
  • the tensioning element 23 arranged between the vertical side walls 43 has, for example, corresponding springs 49 on its two opposite side walls 47, which engage in the grooves 45 with the same inclination.
  • the screw 25, which is supported at its upper screw end 51 on the upper cover wall 13 of the radial extension 17, must be rotated counterclockwise, so that the tensioning element 23 is longitudinal the inclined pressure and contact surface 19 is inclined downward and clamped onto the antenna mast 9.
  • the pressure and contact surface 19 can of course not be designed in the form of interlocking tongues and grooves, but in the form of shoulders and stops projecting obliquely on the antenna mast, or in the form of a continuous inclined surface , on which the clamping element 23 with a wedge-shaped vertical cross section is then held too pre-tensioned on the antenna mast 9.
  • the tensioning element 23 has a concave inner surface 33, similar to the first exemplary embodiment, in horizontal section, with which it lies fully against the partial circumferential region 21 of the antenna mast 9.
  • the carrier 11 is designed as a die-cast part that withstands high bending moments.
  • the fastening device according to the invention can also be made possible with a support 11 which is only annular and is attached below the upper end of the antenna mast 9.
  • the case that the existing plastic protective housing 5 the radial approach is not entirely surrounds 17, may further be provided to increase the anti-theft device, that the operating means of the screw fastening 25 that is, in the present ⁇ case, the screw head 55 is sunk in a recess on the clamping element 23.
  • the pressure and contact surface 19 is designed to be inclined approximately at an angle of 45 ° to the antenna mast. In principle, however, this angle can be varied as long as only sufficient radial contact forces can be achieved on the antenna mast 9.
  • FIGS. 5 and 6 will also be discussed, in which a further exemplary embodiment is shown modified from FIG. 2.
  • the carrier 11 consists of two ring elements 57 arranged one above the other, which are provided with two flanges 59.
  • a lip 61 is punched out in the lower flange 59 and bent toward the upper flange 59 until the lip end rests on the upper flange 59. This creates a lower receiving opening 63 through which the clamping element 23 with its inclined contact and pressure surface 19 comes to rest against the correspondingly inclined lip 61.
  • the clamping element 23 is then biased against the antenna mast 9 in the radial direction, 59 spacing elements 65 being provided for the corresponding alignment and counter-support on the two ring elements or their flanges, which in this case consist of two directed towards one another and through There are bends on the two flanges 59 that support one another at the end.
  • the protective housing 5 can be attached to the flanges themselves and, for example, also cover and shield the top of the antenna mast as well as the ring elements 57. In this case too, an opening 31 for actuating the screw head 55 is provided in the lower part of the protective housing 5.
  • the fastening device further comprises a pressure plate 67, by means of which the clamping element 23a can be prestressed vertically into a recess 69 provided in the radial projection 17 by means of the screw fastening 25.
  • a pressure plate 67 by means of which the clamping element 23a can be prestressed vertically into a recess 69 provided in the radial projection 17 by means of the screw fastening 25.
  • this is prestressed with an enlarged cross-section in the horizontal radial direction on the antenna mast 9, so that an adequate force-fitting fit of the antenna on the antenna mast can also be achieved.
  • the contact forces introduced vertically via the fastening device 25 are deflected in the horizontal direction onto the antenna mast.
  • the ring-shaped or cap-shaped carrier 11 and the protective housing 5 can be formed as a common plastic casting, for example made of thermosets, or also can consist of glass fiber reinforced thermoplastic materials. This further improves the overall stability and security of the arrangement. It may prove to be advantageous that the undercover 5a of the protective housing 5 can be designed in the form of a second half-shell along a continuous dividing line, so that the undercover 5a also has a ring extension encompassing the antenna mast.
  • the substructure is attached to the common support and upper part of the protective housing and to the antenna located in the protective housing in a conventional manner known in principle.

Abstract

1. An antenna (1), for caravans, boats and similar roofed rooms or vehicles adapted to be mounted on an antenna mast (9), which is able to be adjusted in height between a raised operational position and a shipping position lowered to a point just above the roof, and a holding means for attachment of the antenna (1) on the antenna mast (9), the holding means consisting of a clamping element (23) resting against the antenna mast (9) and anchoring part (7) able to be screwed to the same and connected with the antenna (1), characterized in that the holding means, not able to be detached in the shipping position, comprises a vertically aligned screw attachment means (25) by means of which the anchoring part (7), representing a carrier (11), a fixedly connected with the clamping element (23 and 23a), the downwardly turned actuating member (55) only being accessible from the lower side of the antenna (1), the clamping element (23 and 23a) being designed in the form of reversing means (19 and 66), with which the thrust forces transmitted via the vertical screw attachment means (25) in a vertical direction onto the clamping element (23 and 23a) are reversed in a horizontal radial direction towards the antenna mast (9) so that the clamping element (23 and 23a) is held biased against the antenna mast (9).

Description

Die Erfindung betrifft eine Antenne für Wohnwagen, Boote oder ähnliche überdachte Fahrzeuge oder Räume nach dem Oberbegriff des Anspruches 1.The invention relates to an antenna for caravans, boats or similar covered vehicles or rooms according to the preamble of claim 1.

Derartige Antennen sind beispielsweise als « Caravan-Antennen bekannt geworden, die aber auch beispielsweise für Reisemobile, Busse, LKW's, Boote oder ähnliche überdachte Land-oder Wasserfahrzeuge bestimmt und eingesetzt werden. Der Antennenmast ist dabei in der Regel vom Wohnwageninneren aus zwischen einer sog. eingefahrenen Transportstellung und einer ausgefahrenen Betriebsstellung höhenverstellbar angeordnet, wie dies beispielsweise aus DE-U-8 300 035 bekannt ist. In der Transportstellung ist die am oberen Ende des Antennenmastes befestigte Antenne im wesentlichen bis kurz über dem Wohnwagendach eingefahren, wohingegen in der sog. Betriebsstellung zur Erzielung eines optimalen Fernseh- oder Rundfunkempfanges die Antenne entsprechend hoch über dem Wohnwagendach ausgefahren ist.Antennas of this type have become known, for example, as “caravan antennas, but are also intended and used, for example, for motor homes, buses, trucks, boats or similar covered land or water vehicles. The antenna mast is generally arranged such that it can be adjusted in height from the interior of the caravan between a so-called retracted transport position and an extended operating position, as is known, for example, from DE-U-8 300 035. In the transport position, the antenna attached to the upper end of the antenna mast is retracted substantially up to just above the caravan roof, whereas in the so-called operating position, the antenna is extended high above the caravan roof to achieve optimal television or radio reception.

Eine derartige Antennenanordnung ist beispielsweise aus dem Prospekt der Firma Kathrein, « Caravan-Antenne • , HD 35, bekannt geworden und besteht aus einer horizontal und quer zum Antennenmast angeordneten Dipolantenne und einer in Empfangsrichtung ausrichtbaren logarithmisch-perioden Antenne, die in einem Kunststoff-Schutzgehäuse untergebracht ist. Derartige Antenneneinrichtungen insbesondere mit dem Kunststoff-Schutzgehäuse haben sich bisher in der Praxis sehr bewährt, da hierdurch eine Beeinträchtigung der gegenüber Witterungseinflüssen, also klimatischen Einflüssen und auch mechanischen Beanspruchungen sehr empfindliche logarithmisch-periodische Antenne weitgehend vermieden werden können. Die Verwendung eines derartigen Schutzgehäuses stellt aber keinen Teil der vorliegenden Erfindung dar.Such an antenna arrangement has become known, for example, from the brochure from Kathrein, “Caravan-Antenne •, HD 35,” and consists of a dipole antenna arranged horizontally and transversely to the antenna mast and a logarithmic-periodic antenna that can be aligned in the receiving direction and that is in a protective plastic housing is housed. Antenna devices of this type, in particular with the plastic protective housing, have hitherto proven themselves very well in practice, since this largely prevents the logarithmic-periodic antenna, which is very sensitive to weather influences, that is to say climatic influences and mechanical stresses. The use of such a protective housing does not form part of the present invention.

Zur Befestigung am Antennenmast umfaßt die Halteeinrichtung ein mit der Antenne verbundenes Verankerungsteil, an dem eine den Antennenmast umgreifende Schelle mittels Flügelschrauben festgedreht wird.For fastening to the antenna mast, the holding device comprises an anchoring part which is connected to the antenna and on which a clamp encompassing the antenna mast is tightened by means of wing screws.

Mit anderen Worten kann also die vorbeschriebene Halteeinrichtung für die Caravan-Antenne mit den offen zugänglich liegenden Flügelschrauben jederzeit auch wieder demontiert werden. Dabei hat sich in der Vergangenheit gezeigt, daß diese Antennen in zunehmendem Maße, insbesondere auch auf Campingplätzen nachts oder nach dem Verlassen des Wohnwagens schnell und leicht demontiert und gestohlen werden. Von daher ist bereits in der US-A-4137 521 eine Diebstahlsicherung vorgeschlagen worden, die automatisch einen über eine elektrische Kontakteinrichtung vorgesehenen Alarm auslöst, wenn die Antenne montiert wird. - In other words, the above-described holding device for the caravan antenna with the openly accessible wing screws can also be removed at any time. It has been shown in the past that these antennas are increasingly being quickly and easily dismantled and stolen, especially at campsites at night or after leaving the caravan. An anti-theft device has therefore already been proposed in US-A-4137 521, which automatically triggers an alarm provided via an electrical contact device when the antenna is mounted. -

Aufgabe der vorliegenden Erfindung ist es ausgehend vom eingangs genannten Stand der Technik eine einfache und äußerst sichere Halteeinrichtung für eine an einem ausfahrbaren Antennenmast befestigte Antenne für Wohnwagen, Boote oder ähnliche überdachte Fahrzeuge oder Räume zu schaffen, so daß die Antenne auch im unbewachten Zustand gegen Diebstahl gesichert ist. Die Aufgabe wird gemäß der Erfindung entsprechend den im kennzeichnenden Teil des Anspruches 1 angegebenen Merkmalengelöst. Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen angegeben.Object of the present invention is based on the above-mentioned prior art to provide a simple and extremely secure holding device for an antenna attached to an extendable antenna mast for caravans, boats or similar covered vehicles or rooms, so that the antenna in the unguarded state against theft is secured. The object is achieved according to the invention in accordance with the features specified in the characterizing part of claim 1. Advantageous embodiments of the invention are specified in the subclaims.

Durch die erfindungsgemäße Ausbildung der Halteeinrichtung wird erstmals auf verblüffend einfache Art und Weise eine diebstahlsichere Anbringung einer Antenne an einem ausfahbaren Antennenmast geschaffen. Dies wird erfindungsgemäß im wesentlichen dadurch erreicht, daß die Befestigung der Antenne lediglich über eine vertikal ausgerichtete Schraubbefestigung erfolgt, deren Betätigungsglied nur von unten her zugänglich ist. Wird dann die Antenne in die Transportstellung herabgesenkt, so ist es Unbefugten unmöglich diese wieder vom Antennenmast zu entfernen, da in der herabgesenkten Transportstellung wegen des mangelnden Raumbedarfes zwischen Dach und Antenne beispielsweise ein Schraubenzieher zum Lösen der vertikalen Schauben nicht angesetzt werden kann.The inventive design of the holding device for the first time creates an theft-proof attachment of an antenna to an extendable antenna mast in an amazingly simple manner. This is essentially achieved according to the invention in that the antenna is only attached via a vertically oriented screw attachment, the actuator of which is only accessible from below. If the antenna is then lowered into the transport position, it is impossible for unauthorized persons to remove it from the antenna mast again, because in the lowered transport position, for example, a screwdriver cannot be used to loosen the vertical screws due to the lack of space between the roof and the antenna.

In einer besonders bevorzugten Ausführungsform der Erfindung nach Anspruch 2 besteht die Halteeinrichtung aus einem ringförmigen Träger als Verankerungsteil und einem damit zusammenwirkenden Paßglied oder Spannelement, wobei die zwischen dem ringförmigen Träger und dem Spannelement ausgebildete Druck- und Anlagefläche im Vertikalschnitt schräg auf den Antennenmast so zuläuft, daß das Spannelement durch die vertikale Befestigungseinrichtung auf den Antennenmast zu vorgespannt gehalten wird. Dadurch wird in einfachster Ausbildung eine krastchlüssige sichere Befestigung der Antenne am Antennenmast ermöglicht.In a particularly preferred embodiment of the invention according to claim 2, the holding device consists of an annular support as an anchoring part and a fitting member or tensioning element interacting therewith, the pressure and contact surface formed between the annular support and the tensioning element tapering obliquely in vertical section onto the antenna mast, that the clamping element is kept biased by the vertical fastening device on the antenna mast. In the simplest design, this enables the antenna to be securely fastened in a force-locking manner to the antenna mast.

Zwar ist eine Klemmvorrichtung zur Befestigung von Tragarmen, Flanschen und Traversen oder dergleichen an Stangen beispielsweise aus der DD-A-75 675 bekannt geworden, bei der ein prismatisch und/oder als Ringsegment ausgebildeter Körper vorgesehen ist, dessen Druckfläche schräg ist, um eine radiale Anpreßkraft beim Festdrehen einer Schraube zu erzielen. Auch eine aus der europäischen Patentanmeldung EP-A-0010559 bekannte Rohr- und Kabelklemme besteht aus einem elastischen Flanschring mit chräg verlaufenden Wirkflächen und. einer über die schrägen Wirkflächen hindurch steckbaren und festschraubbaren Schraube, wodurch der Klemmring bei zunehmend festeren Eindrehen der Schraube zu einem kleineren Durchmesser innen festgezogen wird. Obgleich also derartige prismatische oder schräge Wirkflächen an sich bekannt sind ist aus den beiden vorstehend genannten Druckschriften kein Hinweis für eine Diebstahlsicherung einer Antenne beispielsweise von Wohnwagen zu entnehmen.A clamping device for attaching support arms, flanges and traverses or the like to rods has become known, for example from DD-A-75 675, in which a prismatic and / or ring-shaped body is provided, the pressure surface of which is inclined to a radial one To achieve contact pressure when tightening a screw. Also known from the European patent application EP-A-0010559 pipe and cable clamp consists of an elastic flange ring with angled active surfaces and. a screw which can be inserted and screwed tightly over the oblique effective surfaces, whereby the clamping ring is tightened to a smaller diameter on the inside as the screw is tightened increasingly. Although prismatic or oblique active surfaces of this type are known per se, there is no reference from the two aforementioned documents to an anti-theft device for an antenna, for example from caravans.

In einer Weiterbildung der Erfindung nach Anspruch 3 ist dabei ferner vorgesehen, daß der ringförmige Träger mit einem radialen Ansatz zur Aufnahme des Spannelementes ausgebildet ist, wobei sich nach Anspruch 4 als günstig erwiesen hat, die schräg auf den Antennenmast zugeneigte Druck- und Anlagefläche am radialen Ansatz unten liegend vorzusehen.In a further development of the invention according to claim 3 it is further provided that the annular carrier is formed with a radial projection for receiving the tensioning element, wherein according to claim 4 has proven to be favorable, the inclined towards the antenna mast pressure and contact surface on the radial Approach to be provided at the bottom.

Ebenso kann der radiale Ansatz des ringförmigen Trägers mit zwei vertikalen Seitenwänden entsprechend Anspruch 6 versehen sein, zwischen denen das am Antennenmast anliegende Paßteil oder Spannelement angeordnet ist, wobei die die radiale Anpreßkraft erzeugende Druck-und Anlageflächen an den innenliegenden Seitenwänden des Ansatzes ausgebildet sind.Likewise, the radial extension of the ring-shaped carrier can be provided with two vertical side walls, between which the fitting part or tensioning element lying against the antenna mast is arranged, the pressure and contact surfaces generating the radial contact force being formed on the inner side walls of the extension.

Die kraftschlüssige Befestigung der Antenne wird in einer besonders bevorzugten Ausgestaltung der Erfindung nach Anspruch 8 noch dadurch verbessert, daß das vorzugsweise aus Kunststoff bestehende Schutzgehäuse den Ansatz des ringförmigen Trägers umschließt und ferner in der Verlängerung der vertikalen Schraubbefestigung im unteren Teil des Schutzgehäuses eine entsprechende Einführöffnung für die Schraubbefestigung vorgesehen ist. Durch diese Maßnahme ist die Schraubbefestigung beispielsweise in Form einer Schraube optisch nicht sichtbar so abgeschirmt, daß in der eingefahrenen Stellung des Antennenmastes ein unbefugter Abbau der Antenne unmöglich ist.The frictional attachment of the antenna is further improved in a particularly preferred embodiment of the invention according to claim 8 in that the protective housing, preferably made of plastic, encloses the neck of the ring-shaped carrier and furthermore in the extension of the vertical screw fastening in the lower part of the protective housing, a corresponding insertion opening for the screw fastening is provided. This measure means that the screw fastening, for example in the form of a screw, is not visually shielded in such a way that unauthorized removal of the antenna is impossible in the retracted position of the antenna mast.

Eine erhöhte Sicherheit vor unbefugtem Entfernen der Antenne wird nach Anspruch 9 vor allem auch noch dadurch gewährleistet, daß an der Anlagefläche zwischen dem Spannelement und dem Antennenmast wechselweise ineinandergreifende Ausnehmungen und Radialvorsprünge vorgesehen sind, so daß beim Festziehen beispielsweise einer Schraube als Befestigungseinrichtung die Vorsprünge in die entsprechenden Vertiefungen eingreifen, so daß der ringförmige Träger und das Spannelement unlösbar am Antennenmast auch noch formschlüssig befestigt sind. Die aus der GB-A-1 067 091 bekannte Anordnung betrifft lediglich eine Rohrverbindungskonstruktion, bei der eine abgewinkelte Schraube eines Vertikalträgers über eine Mantelöffnung in einen Vertikalträger eingehängt bzw. eingesteckt und fest angezogen werden kann.An increased security against unauthorized removal of the antenna is especially ensured according to claim 9 that interlocking recesses and radial projections are provided on the contact surface between the clamping element and the antenna mast, so that when tightening a screw as a fastening device, the projections in the engage corresponding depressions, so that the ring-shaped carrier and the tensioning element are also non-detachably attached to the antenna mast. The arrangement known from GB-A-1 067 091 relates only to a pipe connection construction in which an angled screw of a vertical support can be hooked or inserted and firmly tightened into a vertical support via a jacket opening.

Die Ansprüche 10 bis 12 betreffen eine besonders einfache und dadurch vorteilhafte Weiterbildung der diebstahlsicheren Antennen-Befestigungseinrichtung, die auf einfache Weise durch Stanzen und Prägen von Blechteilen gefertigt werden kann.Claims 10 to 12 relate to a particularly simple and therefore advantageous further development of the anti-theft antenna fastening device, which can be manufactured in a simple manner by stamping and embossing sheet metal parts.

Eine zu der geneigten Anlage- und Druckfläche alternative Ausgestaltung eines Spannelementes ist in den Ansprüchen 13 und 14 wiedergegeben. Das Spannelement besteht in dieser Ausführungsform aus Gummi oder einem gummiähnlichen Material und wird durch die vertikale Spannvorrichtung unter Querschnittsverbreiterung in Radialrichtung auf den Antennenmast zu vorgespannt gehalten. Auch hiedurch werden die vertikal eingeleiteten Anpreßkräfte durch das Spannelement in Horizontalrichtung umgelenkt, wobei sich eine sichere kraftschlüssige Verbindung und Befestigung am Antennenmast hierdurch erzielen läßt.An alternative to the inclined contact and pressure surface configuration of a clamping element is given in claims 13 and 14. The tensioning element in this embodiment consists of rubber or a rubber-like material and is held by the vertical tensioning device with cross-sectional widening in the radial direction too biased to the antenna mast. In this way, too, the vertically introduced contact forces are deflected in the horizontal direction by the tensioning element, whereby a secure non-positive connection and attachment to the antenna mast can thereby be achieved.

Zwar ist aus der DE-C 941 577 eine Kupplung zur lösbaren Verbindung von Teilen grundsätzlich bekannt geworden, bei der an der Verbindungsstelle durch axiales Verpressen eines Gummiringes zwischen einem Becher und einer Stange Radialkräfte zum Halten der Stange erzeugt werden können. Diese grundsätzlich bekannte Einrichtung für eine bewußt lösbare Kupplung betrifft aber gegenüber der vorliegenden Diebstahlsicherung ein völlig anderes Einsatzgebiet.DE-C 941 577 discloses a coupling for releasably connecting parts, in which radial forces for holding the rod can be generated at the connection point by axially pressing a rubber ring between a cup and a rod. This fundamentally known device for a deliberately releasable clutch, however, relates to a completely different area of application compared to the present anti-theft device.

Weitere, die Sicherheit der gesamten Anordnung wiedergebende Ausgestaltungen der Erfindung sind in den Ansprüchen 15 bis 18 wiedergegeben.Further embodiments of the invention that reflect the security of the entire arrangement are given in claims 15 to 18.

Weitere Vorteile, Einzelheiten und Merkmale der Erfindung ergeben sich nachfolgend aus den anhand von Zeichnungen dargestellten Ausführungsbeispielen. Dabei zeigen im einzelnen :

  • Figur 1 : eine schematische Perspektivdarstellung einer an einem Antennenmast befestigten Caravan-Antenne ;
  • Figur 2 : einen Querschnitt längs der Symmetrieachse nach Figur 1 ;
  • Figur 3: ein zweites Ausführungsbeispiel in einem Vertikalschnitt ;
  • Figur 4: einen Horizontalschnitt gemäß der Linie 111-111 in Figur.3 ;
  • Figur und 6: ein weiteres Ausführungsbeispiel in Seiten- und Unteransicht ;
  • Figur 7 : ein weiteres Ausführungsbeispiel mit einem andersartig ausgebildeten Spannelement.
Further advantages, details and features of the invention result below from the exemplary embodiments illustrated with the aid of drawings. The following show in detail:
  • Figure 1 is a schematic perspective view of a caravan antenna attached to an antenna mast;
  • Figure 2 shows a cross section along the axis of symmetry of Figure 1;
  • Figure 3: a second embodiment in a vertical section;
  • Figure 4: a horizontal section along the line 111-111 in Figure 3;
  • Figure and 6: another embodiment in side and bottom view;
  • Figure 7: another embodiment with a differently designed clamping element.

In der in Figur 1 schematisch gezeigten Perspektivdarstellung ist eine Antenne 1 insbesondere zur Verwendung auf einem Caravan gezeigt, die aus einer quer zum Mast angeordneten Dipolantenne 3 und einem in Empfangsrichtung ausgerichteten Kunststoffschutzgehäuse 5 besteht, in dem vor Witterungseinflüssen und mechanischen Beanspruchungen eine logarithmisch-periodische Antenne eingebaut ist.In the perspective view shown schematically in FIG. 1, an antenna 1 is shown, in particular for use on a caravan, which consists of a dipole antenna 3 arranged transversely to the mast and a plastic protective housing 5 oriented in the receiving direction, in which a logarithmic-periodic antenna is exposed to weather influences and mechanical stresses is installed.

Die Antenne 1 ist über mit ihr fest verbundenes Verankerungsteil 7 am oberen Ende eines in der Höhe verstellbaren Antennenmastes 9 befestigt. Der Antennenmast ist beispielsweise vom Inneren eines Wohnwagens aus höhenverstellbar ausgebildet und kann von einer ausgefahrenen Betriebsstellung in eine eingefahrene Transportstellung herabgesenkt werden. In der sog. Transportstellung befindet sich die Antenne 1 unmittelbar kurz über dem nicht näher gezeigten Dach eines Wohnwagens, eines Bottes etc.The antenna 1 is fastened via anchoring part 7 firmly connected to it at the upper end of an antenna mast 9 which is adjustable in height. The antenna mast is, for example, height-adjustable from the inside of a caravan and can be lowered from an extended operating position into a retracted transport position. In the so-called transport position, the antenna 1 is located immediately above the roof of a caravan, a bottom, etc., which is not shown in detail.

Im folgenden wird auf Figur 2 Bezug genommen, in der die Halteeinrichtung der Antenne 1 am Mast 9 schematisch in einer auszugsweisen Vertikalschnittdarstellung gezeigt ist.In the following, reference is made to FIG. 2, in which the holding device of the antenna 1 on the mast 9 is shown schematically in a partial vertical section.

Wie aus Figur 2 ersichtlich ist, umfaßt die Halteeinrichtung einen mit der Antenne 1 fest verbundenen kappenförmigen Träger 11 als Verankerungsteil 7, der mit seiner offenen Stirnseite nach unten auf das obere Ende des Antennenmastes 9 aufgesetzt ist. Dazu ist der kappenförmige Träger 11 mit einer innen umlaufenden Schulter 13 versehen, die am oberen Umlaufrand 15 des Antennenmastes 9 zur Anlage kommt.As can be seen from FIG. 2, the holding device comprises a cap-shaped support 11, which is firmly connected to the antenna 1, as an anchoring part 7 and which, with its open end face downward, points onto the upper end of the antenna dimension stes 9 is attached. For this purpose, the cap-shaped carrier 11 is provided with an inner circumferential shoulder 13, which comes to rest on the upper circumferential edge 15 of the antenna mast 9.

Ferner ist der kappenförmige Träger 11 in Draufsicht in einem Teilumfangsbereich mit einem radialen Ansatz 17 versehen, dessen nach unten weisende Stirnseite als im Vertikalschnitt schräg auf den Antennenmast 9 zu laufende Druck- und Anlagefläche 19 ausgebildet ist. Zwischen dieser Druck- und Anlagefläche 19 und einem Teilumfangsrand 21 des Antennenmastes 9 ist ein Paßglied oder Spannelement 23 mit im wesentlichen im Vertikalschnitt keilförmigen Querschnitt angeordnet, das über eine vertikale Schraube 25, die in einer vertikalen Bohrung 27 im Spannelement 23 und einer darüber in unmittelbarer Verlängerung eingebrachten Sackbohrung 29 mit dem stirnseitigen Ansatz 17 des Trägers 11 fest verbunden ist. Ferner ist noch in unmittelbarer Vertikalverlängerung unterhalb der in Form einer Schraube 25 ausgebildeten Befestigungseinrichtung eine Einfuhröffnung 31 in der unteren Wand des Kunststoff-Schutzgehäuses 5 vorgesehen.Furthermore, the top view of the cap-shaped support 11 is provided in a partial circumferential area with a radial projection 17, the downward-facing end face of which is designed as a pressure and contact surface 19 that runs obliquely on the antenna mast 9 in vertical section. Between this pressure and contact surface 19 and a partial peripheral edge 21 of the antenna mast 9 is a fitting member or clamping element 23 with a substantially vertical section wedge-shaped cross section is arranged, which has a vertical screw 25 in a vertical bore 27 in the clamping element 23 and one above it Extension introduced blind bore 29 is firmly connected to the front shoulder 17 of the carrier 11. Furthermore, an insertion opening 31 is provided in the lower wall of the plastic protective housing 5 in the direct vertical extension below the fastening device in the form of a screw 25.

Zur diebstahlsicheren Befestigung der Antenne 1 muß lediglich der kappenförmige Träger 11 auf das obere Ende des Antennenmastes 9 bei nicht festsitzender Schraube 25 bis zum Anschlag an der innenliegenden Schulter 13 aufgesetzt werden. Danach wird die Schraube 25 über die Einführöffnung 31 mittels eines Schraubenziehers festgedreht.For the theft-proof fastening of the antenna 1, only the cap-shaped support 11 has to be placed on the upper end of the antenna mast 9 with the screw 25 not firmly attached up to the stop on the inner shoulder 13. The screw 25 is then tightened via the insertion opening 31 by means of a screwdriver.

Durch die im gezeigten Ausführungsbeispiel um 45° auf den Antennenmast zu geneigte und in Form einer hinterschnittenen Kante ausgebildeten Druck- und Anlagefläche 19 wird dabei das Spannelement 23 nicht nur in Vertikalrichtung auf den radialen Ansatz 17, sondern keilförmig auch in Radialrichtung auf den Antennenmast 9 vorgepreßt, so daß ein fester und sicherer kraftschlüssiger Sitz des Trägers 11 am Antennenmast 9 erzielt wird. Mit anderen Worten wird durch die geneigt ausgebildete Druck- und Anlagefläche 19 die über die Schraube 25 eingeleiteten vertikalen Kräfte um 90° in Radialrichtung auf den Antennenmast 9 zu umgelenkt.Due to the pressure and contact surface 19 which is inclined at 45 ° to the antenna mast in the exemplary embodiment shown and is in the form of an undercut edge, the clamping element 23 is pressed not only in the vertical direction onto the radial extension 17, but also in the form of a wedge in the radial direction onto the antenna mast 9 , so that a firm and secure non-positive fit of the carrier 11 on the antenna mast 9 is achieved. In other words, the inclined pressure and contact surface 19 deflects the vertical forces introduced via the screw 25 by 90 ° in the radial direction onto the antenna mast 9.

Da im gezeigten Ausführungsbeispiel der radiale Ansatz 17 ferner noch von dem Kunststoff- Schutzgehäuse 5 umgeben ist, ist völlig sichergestellt, daß die Antenne 1 in der sog. Transportstellung durch Unbefugte nicht entfernt werden kann, da in dieser sog. Transportstellung die Antenne beispielsweise an einem Wohnwagen bis kurz über das Dach abgesenkt ist, so daß kein Raum zu Lösen der Schraube 25 verbleibt. Beim Verlassen des Wohnwagens oder nachts kann also allein durch Absenken der Antenne 1 in die Transportstellung eine problemlose Diebstahlsicherung vorgenommen werden.Since, in the exemplary embodiment shown, the radial extension 17 is also surrounded by the plastic protective housing 5, it is completely ensured that the antenna 1 cannot be removed in the so-called transport position by unauthorized persons, since in this so-called transport position the antenna is, for example, on a Caravan is lowered to just above the roof, so that there is no room for loosening the screw 25. When leaving the caravan or at night, the anti-theft device can be secured simply by lowering the antenna 1 into the transport position.

Wie aus Figur 1 ferner noch hervorgeht, kann die Bohrung 27 im Spannelement 23 einen größeren Innendurchmesser als der Außendurchmesser der sie durchsetzenden Schraube 25 aufweisen, so daß beim Festziehen das Spannelement 23 unbehindert eine gewisse Radialbewegung in Richtung auf den Antennenmast 9 zu ausführen kann. Ebenso möglich ist ein radiales Langloch. Dadurch können die radialen Anpreßkräfte auf den Antennenmast 9 noch besser wirksam werden.As can also be seen from FIG. 1, the bore 27 in the tensioning element 23 can have a larger inner diameter than the outer diameter of the screw 25 passing through it, so that when tightening the tensioning element 23 can execute a certain radial movement in the direction of the antenna mast 9 without hindrance. A radial elongated hole is also possible. As a result, the radial contact forces on the antenna mast 9 can become even more effective.

Zur Herstellung einer die Sicherheit weiter erhöhenden formschlüssigen Verbindung kann an der Innenfläche 33 des Spannelementes 23 und/oder am zugeordneten Teilumfangsbereich 21 des Antennenmastes 9 Vertiefungen oder Aussparungen 35 bzw. Vorsprünge 37 vorgesehen sein, die wechselweise ineinandergreifen. Beim Festziehen der Schrauben 25 wird dann das Spannelement 23 keilförmig auf den Antennenmast 9 zu vorgespannt, wobei die jeweiligen Vorsprünge 37 dann in die zugeordneten Vertiefungen 35 eindringen und dadurch nicht nur zur Herstellung einer krafschlüssigen, sondern auch formschlüssigen Befestigung beitragen.In order to produce a positive connection that further increases security, depressions or recesses 35 or projections 37 can be provided on the inner surface 33 of the tensioning element 23 and / or on the associated partial circumferential region 21 of the antenna mast, which alternately interlock. When the screws 25 are tightened, the tensioning element 23 is then pretensioned in a wedge shape onto the antenna mast 9, the respective projections 37 then penetrating into the associated recesses 35 and thereby contributing not only to the production of a positive, but also a form-fitting fastening.

Nachfolgend wird auf Figur 3 und 4 Bezug genommen, in der ein weiteres Ausführungsbeispiel gezeigt ist, wobei gleiche Teile mit gleichen Bezugsziffern versehen sind, wie in Figur 1 und 2.Reference is made below to FIGS. 3 and 4, in which a further exemplary embodiment is shown, the same parts being provided with the same reference numbers as in FIGS. 1 and 2.

In dem Ausführungsbeispiel nach Figur 2 ist der radiale Ansatz 17 des Trägers 11 an seinem dem Schutzgehäuse 5 zugewandten Ende offen ausgebildet. Die Druck- und Anlagefläche 19 am radialen Ansatz 17 des Trägers 11 ist dabei in Form von an den Innenseiten 41 der vertikalen Seitenwände 43 des radialen Ansatzes 17 in Form von schräg auf den Antennenmast 9 zu verlaufenden Nuten 45 eingebracht. Das zwischen den vertikalen Seitenwänden 43 angeordnete Spannelement 23 weist beispielsweise an seinen beiden gegenüberliegenden Seitenwänden 47 entsprechende Federn 49 auf, die mit gleicher Neigung in den Nuten 45 gleitend eingreifen. In diesem Ausführungsbeispiel muß zum Verspannen des Trägers 11 am oberen Ende des Antennenmastes 9 die Schraube 25, die sich an ihrem oberen Schraubenende 51 an der obenliegenden Deckwand 13 des radialen Ansatzes 17 abstützt, im Gegenuhrzeigersinn verdreht werden, so daß sich dabei das Spannelement 23 längs der geneigten Druck- und Anlagefläche 19 schräg nach unten und auf den Antennenmast 9 zu verspannt wird.In the exemplary embodiment according to FIG. 2, the radial extension 17 of the carrier 11 is open at its end facing the protective housing 5. The pressure and contact surface 19 on the radial shoulder 17 of the carrier 11 is introduced in the form of grooves 45 on the inner sides 41 of the vertical side walls 43 of the radial shoulder 17 in the form of grooves obliquely on the antenna mast 9. The tensioning element 23 arranged between the vertical side walls 43 has, for example, corresponding springs 49 on its two opposite side walls 47, which engage in the grooves 45 with the same inclination. In this embodiment, for bracing the support 11 at the upper end of the antenna mast 9, the screw 25, which is supported at its upper screw end 51 on the upper cover wall 13 of the radial extension 17, must be rotated counterclockwise, so that the tensioning element 23 is longitudinal the inclined pressure and contact surface 19 is inclined downward and clamped onto the antenna mast 9.

Abweichend vom gezeigten Ausführungsbeispiel nach Figur 2 kann natürlich auch hier die Druck- und Anlagefläche 19 nicht in Form von ineinandergreifenden Federn und Nuten, sondern in Form von vorspringenden und schräg auf den Antennenmast zu verlaufenden Schultern und Anschlägen oder auch in Form einer durchgängigen Neigungsfläche ausgebildet sein, auf der dann das Spannelement 23 mit keilförmigem Vertikalquerschnitt auf den Antennenmast 9 zu vorgespannt gehalten wird.In a departure from the exemplary embodiment shown in FIG. 2, the pressure and contact surface 19 can of course not be designed in the form of interlocking tongues and grooves, but in the form of shoulders and stops projecting obliquely on the antenna mast, or in the form of a continuous inclined surface , on which the clamping element 23 with a wedge-shaped vertical cross section is then held too pre-tensioned on the antenna mast 9.

Wie aus Figur 4 ferner zu ersehen ist, weist das Spannelement 23 ähnlich wie im ersten Ausführungsbeispiel im Horizontalschnitt eine konkave Innenfläche 33 auf, mit der es an dem Teilumfangsbereich 21 des Antennenmastes 9 voll anliegt.As can also be seen from FIG. 4, the tensioning element 23 has a concave inner surface 33, similar to the first exemplary embodiment, in horizontal section, with which it lies fully against the partial circumferential region 21 of the antenna mast 9.

Um die Diebstahlsicherung auch im Hinblick auf ein Abbrechen der Antenne zu erhöhen, ist der Träger 11 als ein hohe Biegemomente standhaltendes Druckgußteil ausgebildet.To theft protection also with regard to increase the breaking of the antenna, the carrier 11 is designed as a die-cast part that withstands high bending moments.

Schließlich soll noch angemerkt werden, daß die erfindungsgemäße Befestigungseinrichtung auch mit einem Träger 11 ermöglicht werden kann, der lediglich ringförmig ausgebildet ist und unterhalb des oberen Endes des Antennenmastes 9 angebracht wird.Finally, it should also be noted that the fastening device according to the invention can also be made possible with a support 11 which is only annular and is attached below the upper end of the antenna mast 9.

Auch in dem in den Zeichnungen nicht näher dargestellten Fall, daß das aus Kunststoff bestehende Schutzgehäuse 5 den radialen Ansatz 17 nicht völlig umgreift, kann zur Erhöhung der Diebstahlsicherung ferner vorgesehen sein, daß die Betätigungseinrichtung der Schraubbefestigung 25, d. h. im vorliegenden `Fall der Schraubenkopf 55 in einer Vertiefung am Spannelement 23 versenkt angeordnet ist.Also in the not shown in the drawings, the case that the existing plastic protective housing 5 the radial approach is not entirely surrounds 17, may further be provided to increase the anti-theft device, that the operating means of the screw fastening 25 that is, in the present `case, the screw head 55 is sunk in a recess on the clamping element 23.

In den gezeigten Ausführungsbeispielen ist die Druck- und Anlagefläche 19 etwa in einem Winkel von 45° auf den Antennenmast zu geneigt ausgebildet. Im Prinzip aber kann dieser Winkel beliebig variiert werden, so lange nur ausreichende radiale Anpreßkräfte auf dem Antennenmast 9 zu erzielbar sind.In the exemplary embodiments shown, the pressure and contact surface 19 is designed to be inclined approximately at an angle of 45 ° to the antenna mast. In principle, however, this angle can be varied as long as only sufficient radial contact forces can be achieved on the antenna mast 9.

Im folgenden wird noch auf die Figuren 5 und 6 eingegangen, in denen ein weiteres Ausführungsbeispiel in Abwandlung zu Figur 2 gezeigt ist.In the following, FIGS. 5 and 6 will also be discussed, in which a further exemplary embodiment is shown modified from FIG. 2.

Der Träger 11 besteht in dieser Ausführungsform aus zwei übereinander angeordneten Ringelementen 57, die mit zwei Flanschen 59 versehen sind. Im unteren Flansch 59 ist eine Lippe 61 ausgestanzt und auf den oberen Flansch 59 zu abgebogen, bis das Lippenende am oberen Flansch 59 anliegt. Hierdurch wird eine untere Aufnahmeöffnung 63 geschaffen, durch das das Spannelement 23 mit seiner geneigten Anlage-und Druckfläche 19 bis zur Anlage an die entsprechend geneigte Lippe 61 zur Anlage kommt. Durch Festdrehen der Schraubbefestigung 25 wird dann das Spannelement 23 gegen den Antennenmast 9 in Radialrichtung vorgespannt gehalten, wobei zur entsprechenden Ausrichtung und Gegenabstützung an den beiden Ringelementen bzw. deren Flanschen 59 Abstandselemente 65 vorgesehen sind, die in diesem Falle aus zwei aufeinander zu gerichteten und durch stirnseitig aneinander abstützenden Abwinkelungen an den beiden Flanschen 59 bestehen. Wie nicht näher gezeigt ist, kann das Schutzgehäuse 5 an den Flanschen selbst befestigt sein und beispielsweise auch noch die Oberseite des Antennenmastes als auch die Ringelemente 57 mitüberdecken und abschirmen. Auch in diesem Falle ist im Unterteil des Schutzgehäuses 5 eine Öffnung 31 zur Betätigung des Schraubenkopfes 55 vorgesehen.In this embodiment, the carrier 11 consists of two ring elements 57 arranged one above the other, which are provided with two flanges 59. A lip 61 is punched out in the lower flange 59 and bent toward the upper flange 59 until the lip end rests on the upper flange 59. This creates a lower receiving opening 63 through which the clamping element 23 with its inclined contact and pressure surface 19 comes to rest against the correspondingly inclined lip 61. By tightening the screw fastening 25, the clamping element 23 is then biased against the antenna mast 9 in the radial direction, 59 spacing elements 65 being provided for the corresponding alignment and counter-support on the two ring elements or their flanges, which in this case consist of two directed towards one another and through There are bends on the two flanges 59 that support one another at the end. As is not shown in more detail, the protective housing 5 can be attached to the flanges themselves and, for example, also cover and shield the top of the antenna mast as well as the ring elements 57. In this case too, an opening 31 for actuating the screw head 55 is provided in the lower part of the protective housing 5.

Im folgenden wird noch auf Figur 7 Bezug genommen, deren alternative Ausführungsform für das Spannelement 23a mit einem elastischen Reibglied 66 aus Gummi oder ähnlichem elastomeren Werkstoff gezeigt ist. Die Befestigungseinrichtung umfaßt ferner eine Anpreßplatte 67, über die das Spannelement 23a mittels der Schraubbefestigung 25 in eine im radialen Ansatz 17 vorgesehene Vertiefung 69 vertikal vorgespannt werden kann. In dem Maße, wie das Spannelement 23 in Vertikalrichtung vorgespannt wird, wird dieses unter Querschnittsvergrößerung in horizontaler Radialrichtung auf den Antennenmast 9 zu vorgespannt, so daß sich auch hiedurch ein ausreichender krafschlüssiger Sitz der Antenne am Antennenmast erzielen läßt. Auch durch diese Anordnung werden die vertikal über die Befestigungseinrichtung 25 eingeleiteten Anpreßkräfte also in Horizontalrichtung auf den Antennenmast zu umgelenkt.Reference is made below to FIG. 7, whose alternative embodiment for the tensioning element 23a is shown with an elastic friction member 66 made of rubber or similar elastomeric material. The fastening device further comprises a pressure plate 67, by means of which the clamping element 23a can be prestressed vertically into a recess 69 provided in the radial projection 17 by means of the screw fastening 25. To the extent that the tensioning element 23 is prestressed in the vertical direction, this is prestressed with an enlarged cross-section in the horizontal radial direction on the antenna mast 9, so that an adequate force-fitting fit of the antenna on the antenna mast can also be achieved. With this arrangement, too, the contact forces introduced vertically via the fastening device 25 are deflected in the horizontal direction onto the antenna mast.

Nur der Vollständigkeit halber wird noch angemerkt, daß sowohl in den Ausführungsbeispiel nach Figur 7 als vom Grundsatz her auch bei den vorstehend erläuterten Ausführungsbeispielen der ringförmige oder kappenförmige Träger 11 und das Schutzgehäuse 5 als gemeinsames Kunststoffgußteil ausgebildet sein können, das beispielsweise aus Duroplasten, oder auch aus glasfaserverstärkten Thermoplaststoffen bestehen kann. Dadurch wird die gesamte Stabilität und Sicherheit der Anordnung noch weiter verbessert. Dabei kann es sich als günstig erweisen, daß die Unterabdeckung 5a des Schutzgehäuses 5 in Form einer zweiten Halbschale längs einer durchgängigen Trennungslinie ausgebildet sein kann, so daß die Unterabdeckung 5a ebenfalls einen den Antennenmast umgreifenden Ringansatz aufweist. Die Befestigung der Unterkonstruktion am gemeinsamen Träger und Oberteil des Schutzgehäuses sowie der im Schutzgehäuse befindlichen Antenne erfolgt dabei in üblicher und prinzipiell bekannter Weise.Just for the sake of completeness, it should also be noted that both in the exemplary embodiment according to FIG. 7 and in principle also in the exemplary embodiments explained above, the ring-shaped or cap-shaped carrier 11 and the protective housing 5 can be formed as a common plastic casting, for example made of thermosets, or also can consist of glass fiber reinforced thermoplastic materials. This further improves the overall stability and security of the arrangement. It may prove to be advantageous that the undercover 5a of the protective housing 5 can be designed in the form of a second half-shell along a continuous dividing line, so that the undercover 5a also has a ring extension encompassing the antenna mast. The substructure is attached to the common support and upper part of the protective housing and to the antenna located in the protective housing in a conventional manner known in principle.

Claims (18)

1. An antenna (1), for caravans, boats and similar roofed rooms or vehicles adapted to be mounted on an antenna mast (9), which is able to be adjusted in height between a raised operational position and a shipping position lowered to a point just above the roof, and a holding means for attachment of the antenna (1) on the antenna mast (9), the holding means consisting of a clamping element (23) resting against the antenna mast (9) and anchoring part (7) able to be screwed to the same and connected with the antenna (1), characterized in that the holding means, not able to be detached in the shipping position, comprises a vertically aligned screw attachment means (25) by means of which the anchoring part (7), representing a carrier (11), a fixedly connected with the clamping element (23 and 23a), the downwardly turned actuating member (55) only being accessible from the lower side of the antenna (1), the clamping element (23 and 23a) being designed in the form of reversing means (19 and 66), with which the thrust forces transmitted via the vertical screw attachment means (25) in a vertical direction onto the clamping element (23 and 23a) are reversed in a horizontal radial direction towards the antenna mast (9) so that the clamping element (23 and 23a) is held biased against the antenna mast (9).
2. The antenna as claimed in claim 1, characterized in that the anchoring part (11) is designed in the form of an annular or cap carrier (11), against whose end face in a part of the periphery the clamping element (23) abuts via a thrust and abutment surface (19) formed in this manner and which is pressed in a vertical direction by the screw attachment means (25), the thrust and abutment surface (19) formed between the carrier (11) and the clamping element (23) being so designed that in a vertical section it is inclined in relation to the horizontal in relation to the antenna mast (9) at an acute angle that the clamping element (23) is held in a biased condition for the production of a non-positive connection with the antenna mast (9) along the inclined thrust and abutment surface (19) onto the antenna mast (9).
3. The antenna as claimed in claim 1 or claim 2, characterized in that the cap or annular carrier (11) is provided for part of the periphery with a radial shoulder (17) to receive the clamping element (23) in that the inclined thrust and abutment surface (19) and the screw attachment means (25) extending through this plane is arranged in this radial shoulder (17).
4. The antenna as claimed in claim 3, characterized in that the thrust and abutment surface (19) inclined obliquely towards the antenna mast (9) is provided on the lower part of the radial shoulder (17).
5. The antenna as claimed in any one of the claims 1 through 3, characterized in that the radial shoulder (17) of the carrier (11) has two vertical side walls (43) in or on which on the two engaging inner sides (41) the obliquely running thrust and abutment surfaces (19) are formed, which cooperate with those which are formed on the clamping element (23) arranged between the vertical side walls (47).
6. The antenna as claimed in claim 5, characterized in that the thrust and abutment surfaces (19) provided laterally on the clamping element (23) and on the inner surfaces (41) of the vertical side walls (43) consist of respectively cooperating grooves and tongues (45 and 49) or of shoulders and projections.
7. The antenna claimed in any one of the claims 1 through 6, characterized in that the actuating member (55) of the vertical screw attachment means (25) is let into the carrier (11) or, respectively, its radial shoulder (17) and/or in the clamping element (23 and 23a) so as to be lower than its lower terminating edge in a recess.
8. The antenna as claimed in any one of the claims 1 through 7, comprising a guard housing surrounding the antenna, characterized in that the guard housing (5) with its upper and lower sides on its end turned towards the antenna mast (9) covers at least the radial shoulder (17) of the carrier (11) and in that on the lower side of the guard housing (5) an insertion opening (31) is provided as a vertical extension of the screw attachment (25).
9. The antenna as claimed in any one of the claims 1 through 8, characterized in that in part of the periphery of the antenna mast (9) and on the concave inner surface (33) resting thereon of the clamping element (23 and 23a) at least one interlocking radial projection (37) and, respectively, a radial recess (35) are provided.
10. The antenna as claimed in any one of the claims 1 through 4 or 6 to 9, characterized in that the carrier (11) comprises two spaced superposed flanges (59), the inclined thrust and abutment surface (19) consisting of a lip (61) which is stamped out of one flange (59) in the form of a lip and is bent towards the other flange (59) and has its end in engagement.
11. The antenna as claimed in any one of the claims 1 through 4 or 6 through 10, characterized in that the carrier (11) consists of two annular elements (57) slipped on the antenna mast (9) in superposed relationship and which are adjusted using a spacer (65) and each respectively provided with a flange (59) as a radial shoulder (17).
12. The antenna as claimed in claim 10 or claim 11, characterized in that the a receiving opening (63) is formed by the lip (61) stamped and bent out of one flange (59), the clamping element (23) extending through the opening.
13. The antenna as claimed in any one of the claims 1, 2, 8 through 10 or 12, characterized in that the clamping element (23a) consists of a friction element (66) able to be pressed together elastically via the vertical screw attachment means (25) with a widening in cross section, such element (66) being held so as to be pressed against the antenna mast (9) when the screw attachment means (25) is tightened up.
14. The antenna as claimed in claim 13, characterized in that the friction member (66) consists of rubber or a rubber-like material.
15. The antenna as claimed in any one of the claims 1 through 14, characterized in that the carrier (11) consists of a die cast part.
16. The antenna as claimed in any one of the claims 1 through 14 characterized in that the carrier (11) consists of a plastic and more especially of a thermosetting resin.
17. The antenna as claimed in claim 16, characterized in that the carrier (11) consists of fiberglass reinforced thermoplastic.
18. The antenna as claimed in any one of the claims 1 through 17, characterized in that the annular or cap carrier (11) and at least the upper side cover of the guard housing (5) are in the form of a common cast and formed part.
EP84114504A 1984-02-22 1984-11-29 Aerial Expired EP0154003B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84114504T ATE41560T1 (en) 1984-02-22 1984-11-29 ANTENNA.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8405410U 1984-02-22
DE19848405410U DE8405410U1 (en) 1984-02-22 1984-02-22 ANTENNA

Publications (2)

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EP0154003A1 EP0154003A1 (en) 1985-09-11
EP0154003B1 true EP0154003B1 (en) 1989-03-15

Family

ID=6763893

Family Applications (1)

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EP84114504A Expired EP0154003B1 (en) 1984-02-22 1984-11-29 Aerial

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EP (1) EP0154003B1 (en)
AT (1) ATE41560T1 (en)
DE (2) DE8405410U1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3715024A1 (en) * 1987-05-06 1988-11-17 Kathrein Werke Kg Adjusting device for an antenna

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD75675A (en) *
DE941577C (en) * 1953-04-21 1956-04-12 Friedrich Wilhelm Moeller Coupling for the detachable connection of parts
GB1067091A (en) * 1963-05-01 1967-05-03 Stewarts And Lloyds Of New Zea Improvements relating to tubular construction joints
GB1199514A (en) * 1968-01-30 1970-07-22 Williams Holdings Ltd Edward Means for Interconnecting Two Parts.
US4137521A (en) * 1977-02-09 1979-01-30 Roberto Martinez Antenna alarm
EP0010559B1 (en) * 1978-11-01 1982-12-22 BICC Public Limited Company Pipe and cable clamps
DE8300035U1 (en) * 1983-01-03 1983-06-16 Scharf, Peter, 8192 Geretsried ANTENNA POLE FOR CARAVANS OR BOATS

Also Published As

Publication number Publication date
DE3477317D1 (en) 1989-04-20
DE8405410U1 (en) 1984-06-20
EP0154003A1 (en) 1985-09-11
ATE41560T1 (en) 1989-04-15

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