FR2791182A1 - Wall mounted antenna base installation system having wall mounted equipment cabinet with horizontal adjustable plate section attached and vertical rod attachment with adjustable swing position attachment. - Google Patents

Abstract

The antenna installation has an equipment unit (3) which is fixed on the wall. A plate (4) is attached to the equipment unit, and has an antenna mast support (2) section. The antenna mast support has a pivotal mount section (26) with fixing units (30,31) allowing the mast position to swing around, and horizontal position adjustors (55-57) allowing adjustment in a second plane. Position adjustments can be made by the installers without the unit having to be suspended on the wall.

Description

The present invention relates to a base for the establishment of a

  antenna on a vertical wall, especially on the facade of a building. Certain antennas, in particular GSM antennas, must be mounted on vertical walls and must be subject to an adjustment of their orientation relative to a lens, both in a horizontal plane

  ("azimuth" setting) only in a vertical plane ("tilt" setting).

  An existing base for this application comprises a mast supporting the antenna and a console integral with this mast, which is fixed in

  applies to the vertical wall to be fitted.

  This type of base has the essential drawback of forcing installers to hang in a vacuum, both for the installation of

  the antenna but also for the adjustment or maintenance thereof.

  Such a suspension in a vacuum implies complying with very rigorous safety standards, which impose the installation of so-called "collective" safety devices, in particular guardrails, and "individual", in particular a harness. As a result, the installation of a

  antenna is a long, complex and relatively expensive operation.

  The antennas installed with this type of base are also clearly visible on a facade. As a result, in addition to the problem of the visual aspect of the building, various constraints in particular

  related to obtaining administrative installation permits.

  Another existing base includes a console set back from the vertical wall to be fitted, for example on a parapet that the building includes, an arm pivotally mounted by one end on this

  console and a mast fixed at the free end of the arm, to support the antenna.

  Thanks to its pivoting mounting, the arm can switch between a position in which the mast is brought below the facade of the building, to allow the establishment or maintenance of the antenna, and a position

  in which it allows this antenna to be placed on the facade.

  This base solves some of the above problems but retains the significant drawback that the "azimuth" and the "tilt" of the antenna can only be adjusted by hanging in a vacuum. The establishment

  of an antenna with a base of this type remains long and expensive.

  The present invention aims to remedy this essential drawback by providing a base allowing the installation of an antenna without the installers being forced to hang in a vacuum, both at the time of installation of the antenna and time of

  adjustment or maintenance thereof.

  The base according to the invention must also be easy to install and allow easy adjustment of the antenna, to allow reduction in

  largely the duration, and therefore the cost, of an installation.

  The base concerned comprises, in a manner known per se - a console shaped to be fixed at the level of the wall to be fitted; - a plate mounted on this console, and

  - an antenna support mast, connected to this plate.

  According to the invention, the base comprises - means for pivoting mounting of the plate on the console around a vertical axis; - Means for blocking this plate relative to the console in a given angular position, these means being located within an arm length of the part of the console fixed to the wall, so that they can be activated by the installers without the latter having to hang along the wall; - Means for pivoting mounting of the plate on the console, or of the mast on the plate, around a horizontal axis; and - means for blocking this plate relative to the console, or this mast relative to the plate, in a given inclination position, these means being located within an arm length of the part of the console fixed to the wall, so that they can be operated by the installers without the latter having to

hang along the wall.

  The pivoting of the plate and the inclination of this plate or of the mast allow respectively to adjust the "azimuth" and the "tilt" of the antenna, while the aforementioned respective blocking means make it possible to immobilize the plate or the mast in the correct position, without forcing

  installers to hang in a vacuum.

  The base is easy to adjust and remains relatively light, therefore easy to install, and it could be calculated that it could allow the installation of an antenna in twenty minutes where two hours are necessary with

  a base according to the prior art.

  Preferably, the means for pivoting mounting of the plate on the console comprise a threaded rod constituting the pivot axis of the plate, and the means for locking the plate in a given angular position comprise at least one nut cooperating with this threaded rod, this rod and this nut making it possible to tighten against the

  console at least one piece that includes the plate.

  The adjustment of the "azimuth" is thus achieved simply by loosening a nut which cooperates with the threaded rod, by rotating the

  plate in the correct position and tightening this nut again.

  The latter is advantageously located at the top of the

  platinum, so its access is particularly easy.

  Preferably, the plate has an elongated shape in the vertical direction, and the mast is connected to it by two points mutually

vertically distant.

  The plate thus shaped not only allows mounting

  solid but also a precise adjustment of the "tilt".

  According to one embodiment in this case - the plate has a substantially T-shaped, that is to say comprises a vertical branch, pivotally mounted relative to the console, and a horizontal branch, this horizontal branch comprising a resting part on the console, integral with said vertical branch, and a movable part, movable in sliding with respect to said part resting on the console; - The mast is pivotally connected on the one hand to the lower end of the vertical branch and on the other hand to said movable part of the horizontal branch; and - said means for blocking the mast in a given inclination position comprise a screw bearing, on the one hand, against said part of the horizontal branch resting on the console and, on the other

  hand, against the moving part of this same branch.

  The adjustment of the "tilt" is carried out by the displacement, by means of the screw, of the movable part of the horizontal branch relative to the part

  of this same branch resting on the console.

  Advantageously, the aforementioned threaded rod passes through a light arranged in said movable part of the horizontal branch, and a nut which cooperates with this rod bears, directly or not, against this

mobile part.

  The screwing of this nut allows the clamping against the console of this movable part, which is therefore blocked not only by the screw allowing its movement relative to said fixed part of the branch

  horizontal but also by this threaded rod.

  Perfect immobilization of said movable part, capable of withstanding all conditions, in particular the vibrations generated by

the wind, is thus obtained.

  For its proper understanding, the invention is again described below with reference to the appended schematic drawing representing, by way of nonlimiting example, a preferred embodiment of the base

it concerns.

  Figure 1 is a perspective view, while it is mounted on a parapet that includes a building; Figure 2 is a similar view, a plate it comprises being placed in a position of different angular orientation; Figure 3 is a longitudinal sectional view on an enlarged scale; and Figures 4 and 5 are side views, on a reduced scale,

  according to two variant embodiments.

  The figures represent from different angles a base 1 used for the installation of an antenna 2 on a vertical wall,

  especially on the facade of a building.

  This base 1 comprises a console 3, a plate 4 and a

  mast 5 intended to receive the antenna 2.

  In the example shown in Figures 1 to 3, the console 3 comprises an arm 10 for supporting the plate 4, a plate 11 for its attachment to a parapet 12 that includes the building to be equipped, and gussets

  13 firmly connecting the arm 10 to the plate 11.

  Figures 4 and 5 show that the structure of the console 3 can vary depending on the shape of the part of the building intended to receive the base 1. In the case where this building is constituted by a mast 15, as shown in Figure 4, the console 3 comprises an arm 10 of relatively short length and a base 16 fixed to the mast; in the case where the building is a pylon, as shown in Figure 5, the arm 10 also has a relatively short length and the base 17 is fixed to a hoop 18 that includes this pylon; in the case where the base 1 is intended to be fixed on a kiosk that includes the building, the console 3 can simply comprise an arm 10, fixed directly to the upper wall of this kiosk. The free end part of the arm 10 comprises in all cases a tubular sleeve 20 fixed at the lower face of this arm, the free end of which is closed by a plate 21 pierced with a central hole. The plate 4 generally has a T shape, that is to say comprises a branch of generally vertical orientation and a branch

  general horizontal orientation.

  The vertical branch is formed by a lower part 25 and

by a threaded rod 26.

  The part 25 comprises a peripheral lateral wall 27 of square shape, a base plate 28 fixed to this wall 27, which is pierced

  a central hole, and a nut 29 fixed to this plate 28.

  The threaded rod 26 is screwed through this nut 29.

  This rod 26 is engaged through the hole in the plate 21, through the sleeve 20 and then through holes provided in the arm 10 and in the horizontal branch of the plate 4, until it opens beyond

  this branch when the plate 28 is against the plate 21.

  These different holes are such that the rod 26 can pivot at

through them.

  The end of the rod 26 which protrudes beyond said branch

  horizontal includes a nut 30 and a lock nut 31.

  Said horizontal branch of the plate 4 comprises a chassis

  resting on the arm 10 and a slide 36 mounted on this chassis 35.

  The frame 35 is constituted by a dish 40 folded 90 at its part furthest from the mast 5 and by a portion of square tube 41 fixed on this dish 40. The folded part 42 of said dish 40 is pierced

of a hole.

  The tube 41 further comprises a pin 45 for guiding said

  slide 36, projecting from its upper face.

  The slide 36 comprises a main part 46, two folded longitudinal edges 47, a folded side edge 48 located on the side of said folded part 42, and, on the opposite side, two parallel legs 49 engaged

on either side of the mast 5.

  The main part 46 rests on the tube 41 and comprises two slots 50, 51 through which the rod 26 and the pin 45 are respectively engaged. The edges 47 are located near the walls of the tube 41

  to operate a longitudinal guide of the slide 36 on this tube 41.

  The edge 48 is pierced with a hole coaxial with the hole in the folded part 42 and receives a screw 55 therein, the head 55a of this screw 55 being placed against its internal face. A stop nut 56 immobilizes this screw 55 in this hole, which is engaged through the hole in said folded part 42 and comprises two nuts 57, which bear on either side of

this part 42.

  The legs 49 include two coaxial holes crossed by a pin 60, this pin 60 being engaged through a longitudinal slot 61 arranged in the mast 5, which allows the pivoting mounting

  of this mast 5 on the end of the slide 36.

  This mast 5 has a length which corresponds substantially to that of the antenna 2 to be installed, of which it constitutes a forestay. At its lower part, it comprises two parallel legs 65 fixed to it at the height of the part 25. These legs 65 are pierced with coaxial holes coming opposite corresponding holes arranged in two opposite faces of the wall 26, these holes receiving a pin 66 which allows the pivoting mounting of the

  mast 5 relative to this part 25.

  In practice, the rod 26 being slightly unscrewed so as not to exert any clamping on the slide 36 on the one hand and on the part 25 on the other hand, one of the nuts 57 can be loosened while the other can be screwed or unscrewed, as appropriate, to move the slide 36 relative to the rest of the plate 4. This sliding allows, thanks to the pivoting of the mast 5 made possible by the pins 60 and 66 and thanks to the sliding of the pin 60 in the light 61, to adjust the "tilt" of the antenna 2, that is to say the orientation of the latter in a vertical plane. After adjustment, the nut 57 previously loosened is again tightened to immobilize the slide 36 in the position determined as

being adequate.

  The slight unscrewing of the rod 26 also allows the pivoting of the platen 4- mast 5 - antenna 2 assembly relative to the arm 10 around the axis of this rod 26, to allow adjustment of the "azimuth" of the 'antenna 2, that is to say the adjustment of the orientation thereof in a horizontal plane. Once this adjustment has been made, the rod 26 is screwed by action on the lock nut 31, which makes it possible to tighten the slide 36 and frame 35 against the arm 10 and the part 25 against the sleeve 20, and therefore block the assembly of the plate 4 in the position determined to be adequate. The invention thus provides a base used for the installation of an antenna on a vertical wall, in particular on the facade of a building, which overcomes the drawbacks of homologous bases of the

prior art.

  Indeed, this base allows the installation of an antenna without the installers being forced to hang in a vacuum, both at the time of installation of the antenna and at the time of adjustment or maintenance of that -this, thanks to the two degrees of mobility of the antenna made possible by the plate 4 and by the fact that the nuts 30, 31 are located within an arm length of the part of the console 3 fixed to the

wall.

  This base 1 is also easy to install and allows easy adjustment of the antenna, which greatly reduces the duration, and

therefore the cost of an installation.

Claims (5)

  1 - Base (1) used for the establishment of an antenna (2) on a vertical wall, in particular on the facade of a building, comprising: - a console (3) shaped to be fixed at the level of the wall to equip; a plate (4) mounted on this console (3), and - a mast (5) for supporting the antenna (2), connected to this plate (4); base (1) characterized in that it comprises - means (26) for pivoting mounting of the plate (4) on the console (3) about a vertical axis; - Means (30, 31) for blocking this plate (4) relative to the console (3) in a given angular position, these means (30, 31) being located within an arm length of the part of the console (3) fixed to the wall, so that they can be actuated by the installers without the latter having to hang along the wall; - Means (35, 36, 60, 66) for pivoting mounting of the plate on the console, or of the mast (5) on the plate (4), around a horizontal axis; and - means (55 to 57) for blocking this plate relative to the console, or this mast (5) relative to the plate (4), in a given inclination position, these means (55 to 57) being located within an arm's length of the part of the console (3) fixed to the wall, so that they can be actuated by the installers without these   the latter have to hang along the wall.   2 - Base according to claim 1, characterized in that the means for pivoting mounting of the plate (4) on the console (3) comprise a threaded rod (26) constituting the pivot axis of the plate (4), and in that the plate blocking means (4) in a given angular position comprise at least one nut (29, 30, 31) cooperating with this threaded rod (26), this rod (26) and this nut (29 , 30, 31) allowing to clamp against the console (3) at least one part (25, 36) that includes the plate (4).   3 - Base according to claim 2, characterized in that a nut (30, 31) which cooperates with the threaded rod (26) is located at the part top of the plate (4).   4 - Base according to one of claims 1 to 3, characterized in   that the plate (4) has an elongated shape in the vertical direction, and in that the mast (5) is connected to it by two vertically mutually distant points. - Base according to claim 4, characterized in that   - the plate (4) has a substantially T-shape, that is to say   dire comprises a vertical branch, pivotally mounted relative to the console (3), and a horizontal branch, this horizontal branch comprising a part (35) resting on the console (3), integral with said vertical branch, and a movable part ( 36), movable in sliding with respect to said part (35) resting on the console (3); - The mast (5) is pivotally connected on the one hand to the lower end of the vertical branch and on the other hand to said movable part (36) of the horizontal branch; and - said means (55 to 57) for blocking the mast (5) in a given inclination position comprise a screw (55) bearing, on the one hand, against said part of the horizontal branch resting on the   console (3) and, on the other hand, against the movable part of this same branch.   6 - Base according to claim 5, characterized in that the aforementioned threaded rod (26) passes through a light (50) provided in said movable part (36) of the horizontal branch, and in that a nut (30) which cooperates with this rod (26) bears directly or indirectly against this mobile part (36).