EP0154003B1 - Antenne - Google Patents

Antenne Download PDF

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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)
English (en)
Other versions
EP0154003A1 (fr
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/de
Publication of EP0154003A1 publication Critical patent/EP0154003A1/fr
Application granted granted Critical
Publication of EP0154003B1 publication Critical patent/EP0154003B1/fr
Expired legal-status Critical Current

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Classifications

    • 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.

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  • Support Of Aerials (AREA)
  • Axle Suspensions And Sidecars For Cycles (AREA)
  • Details Of Aerials (AREA)

Claims (18)

1. Antenne (1) pour caravanes, bateaux ou véhicules ou espaces similaires couverts d'un toit, comportant un mât (9) pouvant être déplacé verticalement entre une position haute d'utilisation et une position basse de transport, située à une faible hauteur au-dessus du toit, et un dispositif de fixation de l'antenne (1) au mât (9), le dispositif de fixation étant constitué d'un élément de serrage (23) venant se coller contre le mât (9) de l'antenne (1) ainsi que d'une pièce d'ancrage (7) reliée à l'antenne (1) et pouvant être fixée par vis à l'élément de serrage (23), caractérisée en ce que le dispositif de fixation, non amovible dans la position de transport, comporte une vis de fixation (25) orientée verticalement, par l'intermédiaire de laquelle la pièce d'ancrage (7) formant un support (11) est reliée de façon rigide à l'élément de serrage (23, 23a), l'élément de commande (55) dirigé vers le bas n'étant accessible que par le côté inférieur de l'antenne (1) et l'élément de serrage (23, 23a) étant conçu en tant que dispositif de renvoi (19, 66) par lequel les forces de pression appliquées verticalement sur l'élément de serrage (23, 23a) par la vis de fixation verticale (25) sont renvoyées dans le sens radial horizontal vers le mât (9) de l'antenne (1), de sorte que l'élément de serrage (23, 23a) se trouve maintenu serré contre le mât (9) de l'antenne (1).
2. Antenne suivant la revendication 1, caractérisée en ce que la pièce d'ancrage (7) est conçue en tant que support (11) annulaire ou en forme de coiffe présentant une surface d'appui et de pression (19) formée sur une partie de son pourtour, contre laquelle l'élément de serrage (23) vient se positionner et s'y trouve pressé verticalement par la vis de fixation (25), la surface d'appui et de pression (19) formée entre le support (11) et l'élément de serrage (23) étant, lorsque vue en coupe verticale, inclinée par rapport à l'horizontale de façon à former un angle aigu avec le mât (9) de l'antenne (1), en sorte que l'élément de serrage (23) se trouve maintenu fermement appliqué contre le mât (9) par l'intermédiaire de la surface d'appui et de pression inclinée (19), en vue de réaliser une jonction serrante avec le mât (9) de l'antenne (1).
3. Antenne suivant la revendication 1 ou 2, caractérisée en ce qu'une partie du pourtour du support (11) annulaire ou en forme de coiffe présente un épaulement radial (17) destiné à recevoir l'élément de serrage (23) et en ce que la surface d'appui et de pression inclinée (19) et la vis de fixation (25) traversant ce plan se trouvent disposées dans cet épaulement radial (17).
4. Antenne suivant la revendication 3, caractérisée en ce que la surface d'appui et de pression (19) inclinée vers le mât (9) de l'antenne (1) est prévue du côté inférieur de l'épaulement radial (17).
5. Antenne suivant une des revendications 1 à 3, caractérisée en ce que l'épaulement radial (17) du support (11) comporte deux parois latérales verticales (43) dans ou sur les faces intérieures (41) desquelles sont formées les surfaces d'appui et de pression inclinées (19), lesquelles se trouvent en interaction latéralement avec celles des parois latérales verticales (47) de l'élément de serrage (23).
6. Antenne suivant la revendication 5, caractérisée en ce que les surfaces d'appui et de pression (19) prévues latéralement sur l'élément de serrage (23) et sur les faces intérieures (41) des parois latérales verticales (43) consistent respectivement en des rainures et des languettes (45, 49) ou des épaulements et des saillies, lesquels s'emboîtent les uns dans les autres.
7. Antenne suivant une des revendications 1 à 6, caractérisée en ce que l'élément de commande (55) de la vis de fixation verticale (25) se trouve installé de façon noyée dans un renfoncement par rapport au bord inférieur, dans l'épaulement radial (17) du support (11) et/ou dans l'élément de serrage (23, 23a).
8. Antenne suivant une des revendications 1 à 7, comportant une enveloppe de protection entourant l'antenne, caractérisée en ce que l'extrémité de l'enveloppe de protection (5) située du côté du mât (9) de l'antenne (1) masque, avec sa partie supérieure et sa partie inférieure, au moins l'épaulement radial (17) du support (11) et en ce qu'il est prévu un orifice d'introduction (31) dans le prolongement vertical de la vis de fixation (25) au sein de la partie inférieure de l'enveloppe de protection (5).
9. Antenne suivant une des revendications 1 à 8, caractérisée en ce qu'il est prévu au moins un évidement radial (35) et une saillie radiale (37) s'emboîtant l'un dans l'autre, respectivement dans une partie du pourtour (21) du mât (9) de l'antenne (1) et sur la surface intérieure concave (33) correspondante de l'élément de serrage (23, 23a).
10. Antenne suivant une des revendications 1 à 4 ou 6 à 9, caractérisée en ce que le support (11) comporte deux brides (59) disposées de manière écartée l'une de l'autre dans le sens vertical, la surface d'appui et de pression inclinée (19) étant constituée par une lame (61) découpée dans une des brides (59) et pliée vers l'autre bride (59), de façon à ce que son extrémité libre vienne s'y appuyer.
11. Antenne suivant une des revendications 1 à 4 ou 6 à 10, caractérisée en ce que le support (11) consiste en deux éléments annulaires (57) glissés l'un au-dessus de l'autre sur le mât (9) de l'antenne (1), lesquels se trouvent maintenus écartés par une entretoise (65) et sont chacun pourvus d'une bride (59) en tant qu'épaulement radial (17).
12. Antenne suivant la revendication 10 ou 11, caractérisée en ce qu'une ouverture de positionnement (63), dans laquelle vient s'insérer l'élément de serrage (23), est formée par la lame (61) découpée et pliée dans une des brides (59). 13. Antenne suivant une des revendications 1, 2, 8 à 10 ou 12, caractérisée en ce que l'élément de serrage (23a) consiste en un élément de friction (66) pouvant être comprimé axialement par la vis de fixation verticale (25), de manière à fournir une augmentation de sa section et à se trouver maintenu pressé contre le mât (9) de l'antenne (1) lorsque la vis de fixation (25) est serrée au maximum.
14. Antenne suivant la revendication 13, caractérisée en ce que l'élément de friction (66) est en caoutchouc ou dans une matière similaire à du caoutchouc.
15. Antenne suivant une des revendications 1 à 14, caractérisée en ce que le support (11) est une pièce coulée sous pression.
16. Antenne suivant une des revendications 1 à 14, caractérisée en ce que le support (11) est en matière synthétique, en particulier en résine thermodurcissable.
17. Antenne suivant la revendication 16, caractérisée en ce que le support (11) est en matière thermoplastique renforcée par fibre de verre.
18. Antenne suivant une des revendications 1 à 17, caractérisée en ce que le support (11) annulaire ou en forme de coiffe et au moins la partie supérieure de l'enveloppe de protection (5) sont formées d'une seule pièce coulée et moulée.
EP84114504A 1984-02-22 1984-11-29 Antenne Expired EP0154003B1 (fr)

Priority Applications (1)

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

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19848405410U DE8405410U1 (de) 1984-02-22 1984-02-22 Antenne
DE8405410U 1984-02-22

Publications (2)

Publication Number Publication Date
EP0154003A1 EP0154003A1 (fr) 1985-09-11
EP0154003B1 true EP0154003B1 (fr) 1989-03-15

Family

ID=6763893

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84114504A Expired EP0154003B1 (fr) 1984-02-22 1984-11-29 Antenne

Country Status (3)

Country Link
EP (1) EP0154003B1 (fr)
AT (1) ATE41560T1 (fr)
DE (2) DE8405410U1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3715024A1 (de) * 1987-05-06 1988-11-17 Kathrein Werke Kg Einstellvorrichtung fuer eine antenne

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD75675A (fr) *
DE941577C (de) * 1953-04-21 1956-04-12 Friedrich Wilhelm Moeller Kupplung zur loesbaren Verbindung von Teilen
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 (fr) * 1978-11-01 1982-12-22 BICC Public Limited Company Collier de serrage pour tubes et câbles
DE8300035U1 (de) * 1983-01-03 1983-06-16 Scharf, Peter, 8192 Geretsried Antennenmast fuer wohnwagen oder boote

Also Published As

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

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