Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01Q—ANTENNAS, i.e. RADIO AERIALS
  • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
  • H01Q3/02—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
  • H01Q3/04—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying one co-ordinate of the orientation
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01Q—ANTENNAS, i.e. RADIO AERIALS
  • H01Q1/00—Details of, or arrangements associated with, antennas
  • H01Q1/12—Supports; Mounting means
  • H01Q1/125—Means for positioning

Definitions

• the present invention has for object a universal support structure, particularly of a parabolic antenna, aiming at the adjusting of at least the azimuth.
• the invention finds particular even if not exclusive application in the evolutive technological processes, related to the industrial production and subsequent marketing of complementary devices for the ground reception apparatuses of long distance and satellite signals.
• Background Art The parabolic antenna, broadly speaking, is certainly comprised in the state of the art.
• Said supports may practically be made up of a so called pallet more or less vertically developed suitably fastened to the roof loft, and along which, orthogonally, the traditional antennas, but also, as in the herein analysed case, also the parabolic ones, after a directioning, are fastened.
• alternative supporting means such as the tripods, or some particular brackets buried in the concrete cast, but also other solutions.
• the reference technology, to which the present invention is directed mainly concerns applications of the first and fixed type, in which a parabola made up of a disk with small diameter, for the signals reception, turned towards the selected satellite is substantially provided.
• the shape of the parabola on the intrados is of the concave type, and it is engaged on the convex extrados, by a plastic material support, obtained by injection moulding, generally developed along an arch which concerns a short portion of the diameter projecting with a section beyond the edge of the same parabola.
• a plastic material support obtained by injection moulding, generally developed along an arch which concerns a short portion of the diameter projecting with a section beyond the edge of the same parabola.
• the parabola support dynamic means interacts with a static bracket and relative means for the hooking to a traditional group supporting pallet.
• said bracket is made up of a zinc-plated sheet piece, "U" folded for obtaining a back and two walls, in which while the back provides a particular shape for the pallet clamping, by interaction of the holding flanges which wrap the pole which it rests on, the walls are placed across the parabola support, overlapping the sides of the same.
• the constraint between said two elements bracket-support finally, is obtained on two points, a first hinging one, providing a pin passing through said support up to touch the walls of said bracket, and a second lower one, for the azimuth adjustment.
• the bracket For allowing the azimuth adjustment, while the support provides a passing hole, the bracket, always with regard to the lower constraint, provides the realisation of two symmetrical guides consisting of arched slots, whose development and angle depend, mainly, on the parabolic antenna installation latitude, requiring a different adjustment range concerning the disk inclination. Finally, on the disk supporting means, around the bracket hinging, for each part, some reference notches are etched, on which it is possible to measure the degrees of inclination necessary for the azimuth correct adjustment. Such parabolic antennas support solutions, even if widely spread, have different drawbacks mainly of functional kind.
• the operation should be carried out synchronically on both locking points using at least two hands and therefore it involves, for the objective impossibility of a correct intervention, a slight reference loss which may interfere more or less negatively with the images quality.
• the installation firms use at least two specialised people, and this fact obviously causes higher installation costs.
• a practical do-it- yourself use of the accessory is not allowed, thus preventing a wide spreading of the parabolic antenna.
• a third and not least aspect regards a certain oversizing of the group, support-disk and pallet fastening bracket contrary to the market demands, and this involves the use of more raw material and does not allow the use of traditional packaging.
• a universal support structure particularly of a parabolic antenna, aiming at the adjustment of at least the azimuth, essentially made up of a fork-like bracket fastenable on one side to a vertical pallet by at least one fastening flange, and on the other engaging a parabola support provided with fixing means of the same as well as of the relative small arm associated with it, for the support of a signal converter device, in which said bracket specularly provides for each of the two sides: - a single hole, able to house the parabola support hinging and fixing screw, said hole being conical on one side, on the other being provided with a key for the locking of at least one head of said hinging and fixing screw; - a radial knurl, obtained on the side's intrados in correspondence of the surface which surrounds said hole; - a series of points, monolithically obtained on the side's intrados within the surface which surrounds said
• the installation of the parabolic antenna is considerably eased, because the installer's intervention, in the azimuth adjustment phase, is limited to the loosening and repositioning of a single hinging and fixing constraint.
• the particular interaction between fixing bracket and support further allows an azimuth micrometrical adjustment, keeping its inclination correct during the fixing procedure, definitely allowing an image reception quality optimization.
• the reduction at one single hinging and fixing constraint, between bracket and parabola support allows a fair size-reduction of the group, allowing a better compactness of the apparatus, and therefore being less subjected to the natural stresses exerted by the environmental forces on the parabola surface.
• bracket-parabola support group which may be considered of the universal type. Its peculiarity, in fact, prevents the firms from the warehouse storage of a bracket and support, particularly shaped and intended as finished products.
• the azimuth adjustment limit is considerably widened, along an arch close to 90°, thus comprising a wider positioning latitudes spectrum, without interfering on the necessary quality characteristics of the antenna.
• Figure 1. shows a parabolic antenna prospect, complete with the adjustable support device, engaged to a relative support vertical pallet.
• Figure 2. shows a back side view of the parabola-adjustable support device group.
• Figure 3. is a side view of a parabola support means.
• Figure 4. is a view, seen from the back side of the sole support means as in Figure 3.
• Figure 5. is a front side view again of the parabola support shown in Figure 3.
• Figure 6. finally, is a top view of the support shown in Figure 3.
• Figure 7. shows a side view of the intrados of a bracket for the fastening to a pallet for the fixing and hinging of the parabola support.
• Figure 8. is transversal sectional view of the fastening bracket.
• Figure 9. is a view, seen from the bracket back side as in Figures 7. and 8.
• Figure 10. is a particular view of a bracket's surface as in previous Figures, for the back resting on the support pallet.
• a parabolic antenna (A) of the type adjustable on two axes, is essentially made up of a parabola ( 1) shaped like a convex disk, which provides on the extrados, a relative support means (2) connectable by hinging to a bracket (3), known as azel, which in its turn is fastenable to a support vertical pallet (4).
• the support means (2) is made up of a body, preferably in plastic material, essentially boxed, radially developed along an arch portion of the parabola ( 1), with a lower extension (2'), which projecting beyond the edge of the parabola ( 1), is suitable for providing a hole for the inserting and fixing of a relative perpendicular small arm (5), on whose end a signal converter (6) is associated.
• the support means (2) of the parabola ( 1) comprises a back (2") consisting of a rounded surface in syntony with the group, from which two essentially perpendicular sides (2'") project, defining an alveolar internal surface (7) acting as stiffening structure, of the support means (2), also increasing its strength.
• a wide zone ( 10) surrounding said hole (9) respect to each side (2'") is flat and thickened respect to the remaining surface of the side ( 2'" ), furthermore, it for a determined round-shaped portion appears as less roughened ( 11) and locally concerned by a graduated periferic scale ( 12) which gives the installer indications on the inclination angle, azimuth, of the parabola ( 1 ) .
• the supporting means (2) of a parabola ( 1) results thus hinged to a bracket (3) previously engaged to a pallet, in particular a vertical one, (4).
• Said bracket (3) has a double function, firstly, it allows the lateral orientation or flexion, and secondarily the azimuth adjustment of the parabola ( 1).
• the first function is allowed, providing a flange with a clamping tie-rod (13), which by means of traditional holding nut, allows the fixing in such a position of the bracket (3) with a part of the back (3') in contact with the surface of the pallet (4).
• the bracket (3) provides monolithically, both along the upper edge and the lower one, the realisation of a fin ( 14), perpendicular to the back (3") whose edge is shaped thus to provide an arch ( 14') with toothed profile which is partially alike the surface of the pallet (4).
• the second function that is the azimuth adjustment, is allowed by providing along both sides (3") which extend perpendicularly from the back (3'), obtaining a kind of fork with rounded ends, a passing hole ( 15), which necessarily coincides with the hole (9) made transversal to the support (2) of the parabola ( 1 ).
• a characteristic of said hole ( 15), is that of providing, in correspondence of the extrados of the corresponding side (3"), an octagonal section ( 15'), becoming a locking key of the screw head (20) for the parabola ( 1) support (2) fixing and hinging thus inserted.

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Cited By (2)

Citations (4)

• 1997
  • 1997-03-28 IT IT97TV000034A patent/IT1293337B1/it active IP Right Grant
• 1998
  • 1998-03-27 WO PCT/IT1998/000070 patent/WO1998044584A1/en active Application Filing

Patent Citations (4)

Non-Patent Citations (2)

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