FR2563946A1 - Connecting device for an antenna base intended to be fixed to a wall and anti-interference hood for such a device - Google Patents

Abstract

The connecting device comprises means B of locking a member 3 for fixing an antenna base 1, means P of electrical insulation of this member 3 with respect to an earth 2 and means R of electrical connection of a coaxial cable 5 to the fixing member 3. This fixing member 3 is electrically linked to the antenna A. The device comprises elastic tabs 21, oriented longitudinally and able to cooperate, to ensure snap-fitting, with openings 19 provided in an anti-interference metal hood 20 intended to envelop the fixing member 3 as well as the locking means B and connection means R, contact means C furthermore being provided to establish an electrical link between this hood 20 and the earth 2, 15 during the snap-fitting of the said hood 20.

Description

CONNECTING DEVICE FOR AN ANTENNA BASE FOR USE

  TO BE FIXED ON A WALL AND ANTI-PEST CONTROL CAP

FOR SUCH A DEVICE.

  The invention relates to a device for connecting

  cord for an antenna base intended to be fixed to a wall, in particular an automotive body sheet, said base comprising a fixing member electrically connected to the antenna and suitable for passing through an opening provided in the wall, the connection device comprising, on the side of the wall opposite the base, means for blocking the fixing member, means for electrically isolating this member

  relative to a mass, and electrical connection means

  stick of a coaxial cable to the fixing member.

  The invention relates more particularly, but not exclusively, to a connection device for a base

  roof antenna of a motor vehicle.

  The object of the invention is, above all, to provide a connection device in which the assembly of all the parts is simplified and which makes it possible to carry out, in

  simple and fast conditions, effective shielding

  be possible interference from the fixing member.

  According to the invention, a coupling device, of the kind defined above, is characterized in that it

  includes elastic tabs, oriented longitudinally-

  ment, able to cooperate, to ensure a snap-fastening, with

  openings on a metal anti-plug

  interference designed to envelop the fixing member as well as the locking and connection means,

  contact being further provided for establishing an electrical connection

  stick between this cap and the earth, when snapping

of said cap.

  According to a first solution, the elastic tabs

  ticks can be metallic and constitute the means of

electric contact.

  The tongues can be arranged so as to engage inside the cap, in which case they have protrusions towards the outside, or else be arranged so as to engage around the cap, the

  tabs then having inward projections.

  The projections provided on the tongues can be obtained by deformation of an area of the tongue. Preferably, the elastic tongues are integral with a sole, in particular in the form of a washer,

  whose mean plane is substantially orthogonal to the direction

longitudinal tion of the tabs.

  This sole can be clamped between a washer

  and an insulating ring surrounding the fixing member

  tion, the soleplate and the earth washer being in electrical contact.

  Alternatively, the sole and the toe

  of mass can form a single piece.

  Advantageously, the mass washer has notched tabs, substantially orthogonal to the mean plane of the washer, capable of engaging in grooves provided

  on an insulating ring intended to surround the fixing member

  tion, the notches of the legs being able to catch on. on radial walls of these grooves. When the sole is separate from the washer, and has a diameter greater than that of the washer, lights may be provided in the

  sole for the passage of the notched legs of the washer.

  An antenna terminal is generally provided on the side of the ring opposite to that equipped with the ground washer, this antenna terminal also being equipped with notched lugs, substantially orthogonal to the mean plane of

  the terminal, suitable for cooperating with corresponding grooves

  dantes provided in said insulating ring. This pod

  antenna is in electrical connection with the fixing member

  tion, in particular thanks to a metal clamping washer, said antenna terminal being intended to be connected to the coaxial cable.

  Preferably, the suppressor cap includes

  door, towards its bottom opposite to the wall on which the antenna base is fixed, a gripping means, such as a relief or a hollow, in particular a peripheral groove, to facilitate the exercise of a pull in sight disassembly of

this cap.

  The ground washer generally includes

  teeth on its periphery, inclined so as to make sail-

  linked with respect to the mean plane of the washer, these teeth being clean and cooperating with the wall which, generally,

constitutes the mass.

  The interference suppression cap may comprise at least one longitudinal rib, projecting towards the interferer, capable of cooperating with a groove provided on the insulating ring for the angular positioning of the

  cap relative to this ring.

  According to an alternative embodiment, the elastic tongues, oriented longitudinally, for the snap-fastening of the metal cap, may be provided on the insulating ring, surrounding the fixing member, at the periphery of the latter. The invention also relates to a metal antiparasitic cap, for a connection device as defined above, characterized in that openings are provided in this cap to cooperate and ensure snap-fastening with elastic tabs,

  longitudinally oriented, of the connecting device.

  Advantageously, the cap comprises at least one longitudinal rib i which corresponds, on the outer wall of the cap, a hollow in which is housed

  an orienting nipple provided under the antenna base.

  33 The invention consists, apart from the arrangements

  above, in certain other provisions which will be more explicitly discussed below with regard to particular embodiments described with reference

  to the attached drawings, but which are in no way limited to

tifs.

  FIG. 1, of these drawings, is an axial section,

  with external parts, of a connecting device

form to the invention.

  Figure 2 is a section along II-II in Figure 1.

  FIG. 3 is a partial axial section shown

  trant an alternative embodiment. Figure 4 illustrates, similarly to Figure 3,

another alternative embodiment.

  Figure 5 is an exploded perspective view of the connection device of Figure 1 before assembly of the

elements.

  Figure 6 illustrates, in perspective, a variant

  for making the mass washer and the sole.

  Figure 7 illustrates, in perspective, another alternative embodiment of the sole forming washer

mass.

  Figure 8, finally, schematically represents a

  variant in which the tabs elas-

  ticks for locking are provided on the iso- ring

  lante. Referring to the drawings, and more particularly to FIGS. 1, 2 and 5, one can see a connection device for an antenna base 1 (FIG. 1) intended to be fixed to a wall. More specifically, the representation of FIG. I corresponds to an antenna base of a motor vehicle roof, and the wall 2 is formed by the sheet metal of the roof of this vehicle. The base 1 comprises a fixing member 3 constituted by a screw and electrically connected to the antenna A. This member or screw 3 is

  suitable for passing through an opening 4 provided in the wall 2.

  The bottom of the base 1 bears against the wall 2 while

  the member 3 is substantially orthogonal to this wall.

  The connection device comprises, on the side of the wall 2 opposite the base 1, blocking means B of the fixing member 3, electrical insulation means P of this member 3 with respect to a mass constituted by the metal sheet of the wall 2, and connection means

  electric R of a coaxial cable 5 to the fixing member 3.

  The blocking means B are formed by a nut 6 engaged on the screw 3 and bearing, via a metal washer 7 against a stack of parts described below, this stack being located between the washer 7 and wall 2, and being pushed against this wall 2

  by the tightening force of the nut 6.

  The electrical insulation means P include

  a ring 8 of insulating material, in particular of plas-

  tick, the general shape of which is substantially that of a cylindrical sleeve as shown in FIG. 5, the external cylindrical wall of this sleeve being provided with grooves

which will be discussed later.

  The internal diameter of the bore 9 of the ring 8 is significantly greater than that of the screw 3, for example of the order of twice the diameter of this screw. The ring 8 is substantially coaxial with the screw 3, so that a substantially constant radial clearance j exists between the surface

  outside of screw 3 and the surface of bore 9.

  The electrical connection means R of the coaxial cable 5 comprise an antenna terminal 10 (see in particular FIG. 5) constituted by a washer, provided on its

  periphery, of a branch 11 of electrical connection sen-

  substantially orthogonal to the mean plane of the terminal washer. This branch 11 is curved radially outward, substantially at right angles, at its end

  away from the washer to form a tail 12 of rac-

  electrical cord, in particular by welding, of the cable

  coaxial 5. The tail 12 can be engaged, at least by

  tially, in the insulating sheath 13 surrounding the cable 5.

  Conventionally, a metal braid 14 surrounds this

  first sheath 13; this metallic braid is electrically connected

  three times, in particular by welding, to a ground terminal 15.

  A second insulating sheath 16, surrounding the metal braid 14, is mechanically held on the terminal 15 by virtue of the clamping exerted by the deformed branches of a clamp 17 secured to the ground terminal 15. Lugs 18 (FIG. 1) obtained by cutting and by deformation of a tongue of an area of the clamp 17 can be provided for

  ensure better mechanical attachment of the sheath 16.

  The electrical connection between the metal screw 3 (and the antenna A) and the cable 5 is ensured by the contacts between the nut 6, the metal washer 7 and the washer

terminal 10.

  The device according to the invention comprises elastic tongues L, oriented longitudinally, that is to say in a direction substantially parallel to the longitudinal axis of the fixing member or screws 3, proper

  to cooperate, to achieve a snap-fastening, with openers

  tures 19 provided on a metal cap 20 of interference suppression. This cap 20 is suitable for enveloping the fixing member 3 as well as the locking means B and

  the connection means R. Electric contact means

  are also provided to establish an electrical connection

  stick between the cap 20 and the earth (washer 15 and sheet

  2), when the cap 20 is snapped on.

  According to a first possibility, which corresponds to the embodiments of FIGS. 1 to 7, the elastic tongues L

  are metallic and also constitute the means of

  electric tact C. The elastic tongues L according to the embodiment of FIGS. 1, 2 and 5, are formed by metal tongues 21 secured to a sole 22 substantially in the shape of a washer. The tongues 21 extend in a direction substantially orthogonal to the plane of the sole 22 (see in particular Figure 5). Three tabs 21 can be provided, preferably being evenly distributed at the

  periphery of the sole 22, that is to say angularly distant

  from each other by 120 '. The sole 22 is intended to be placed against the face of the insulating ring remote from that against which the antenna terminal 10 bears. The sole 22 is therefore located in the vicinity of the wall 2, as visible in FIG. 1. The tongues 21, which are all located on the same side of the mean plane of the sole D22, are turned on the side opposite to the wall 2,

  that is to say towards the antenna terminal 10.

  The sole 22 is therefore clamped between the insulating ring 8 and the ground lug 15 also constituted by a sort of washer provided on its periphery with teeth 23, of substantially triangular shape (Figure 5), projecting from the mean plane. of the terminal 15 and suitable for pressing against the wall 2 to establish good electrical contact

  with this wall connected to ground.

  According to the embodiment of Figures 1, 2 and, the tongues 21 are arranged so as to engage inside the cap 20; each tongue has an angular part 24 projecting radially towards

  the exterior suitable for engaging elastically in an opening

  ture 19 corresponding to the cap 20. These parts 24 are preferably obtained by deformation of the corresponding zone of the tongues. Grooves 25, oriented parallel to the generatrices of the sleeve 8, are provided at the periphery of the sleeve to receive the tongues 21; the latter protrude, with respect to the envelope surface of the sleeve 8, only through the angular end of

their projecting part 24.

  The mechanical connection between the lug or ground washer 15 and the insulating ring 8 is advantageously carried out using notched lugs 26 (FIG. 3) extending in a direction substantially orthogonal to the mean plane of the

  terminal 15, on the side opposite the teeth 23. These legs 26, soli-

  terminals 15, can be obtained by folding

  if at right angles to tongues adjoining the terminal 15. Two tabs 26, diametrically opposite, can be provided; the diameter passing through the median zones of these two legs 26 is orthogonal to the mean direction of the

pxnce 7 extending the terminal 15.

  Grooves 27, in particular of substantially T-shaped cross section, open radially outward, are provided on the periphery of the ring 8 to receive the tongues 26. More precisely, these tongues 26 are

  engaged in part 28 of each groove 27 corresponding

  facing the horizontal branch of the section T. Another part 29 whose dimension along the periphery of the ring 8 is less than that of the part 28, opens onto the outside of this ring. Shoulders 30 are thus

  determined, along the two longitudinal edges of the par-

  tie 28 so as to trap the tabs 26 in this part 28 and to prevent them from moving radially outwards. The notches 31 (Figure 5) of the legs 26 are adapted to cooperate with the radial walls 32 of the parts 28 and to hang on these walls to ensure the mechanical assembly of the ground lug 15 and the insulating ring 8. The notches 31 are oriented so as to allow easy introduction of the tabs 26 into the grooves 27, but to make it difficult to remove the tabs 26, from these grooves 27, due to the hooking of the notches 31

on the walls 32.

  The suppressor cap 8 comprises, at least

  one or, preferably, two longitudinal ribs 33 (fig-

  ure 2), diametrically opposite, projecting radially

  inward to cooperate with corresponding grooves

  dantes of the insulating ring 8. The ribs 33 can be obtained by deformation of the wall of the cap 20; to the ribs 33 correspond, on the outer wall of the

  cap, recesses or grooves having a cross-section

  dirty in V, widely open to the outside. Advantageous-

  ment, these ribs 33 cooperate with the outer parts 29 of the grooves 27, the outer edges of these parts 29 being flared outward in correspondence with the walls of the ribs 33, as visible in Figure 2. The cap 20 comprises, in in addition, a notch 34 provided for the passage of the coaxial cable 5, its sheath 13 and a clamp 17a, integral with the terminal 15, intended for the mechanical tightening of the sheath 13. The correct mounting of the cap 20 is therefore not possible that in a well-defined angular position, position for which the protruding parts 24 of the tongues 21 will engage in the openings 19 when the cap 20 is pushed in sufficiently. In this position of the cap 20, a stud

  orientation t (Figure 2), provided under the base 1 and cross

  sant a hole in the wall 2, is housed in the outer hollow, in V, of one of the ribs 33, as clearly visible in Figure 2. The distance between the stud t and the axis

  of screw 3 is generally imposed.

  This cap comprises, towards its bottom 35 opposite the wall 2 on which the base 1 is fixed, a gripping means advantageously formed by a peripheral groove 36 so as to facilitate the taking of this cap and

  the exercise of traction to disassemble this cap.

  The mechanical connection between the antenna terminal 10 and the insulating ring 8 is made, preferably in a manner analogous to that of the ground terminal 15. Thus, the

  antenna terminal 10 has notched tabs 37, sem-

  blable to the legs 26 already described; these tabs 37 are oriented in a direction substantially orthogonal to the mean plane of the terminal 10 (see FIG. 5). The branch 11, which was discussed above, is also provided on its longitudinal edges with notches, as visible in FIG. 5. The median zones of the two notched legs 37 and of the branch 11 are located substantially at the top of a triangle isosceles, as seen in Figure 2; branch

  11 is included, angularly, between two elastic tabs-

  ticks 21 while the legs 37 are included, angular

  lairement, between the other tongue 21 and the two legs 26.

  The notched lugs 37 and the branch 11, which is also notched, are capable of cooperating, like the lugs 26, with radial walls 38 of longitudinal grooves 39 of substantially T-shaped cross section provided at the periphery of the

ring 8.

  The centering of the insulating ring 8 with respect to the fixing member 3 is ensured using the antenna terminal 10 which is provided with a central hole 40, the

  diameter is only slightly greater than that of screw 3.

  It should be noted that the legs 37, as well as the branch 11 are located above the terminal 10, according to the representation of FIG. 1, that is to say that they extend in the direction of the wall 2, while the tabs 26 extend downward, that is to say in the direction of the bottom 35 of the cap 20, from the sole 22 located above the ring 8. The introduction of the tabs 26 and 37 into their grooves associated, will therefore be carried out in opposite directions. It should also be noted that the base 1, generally made of insulating plastic, is extended

  down by a kind of sleeve 41 (Figure 1), also

  insulating plastic material ensuring centering, with a relatively small clearance, in the opening 4, the

  diameter is significantly greater than that of screw 3.

  According to the embodiment of Figures 1, 2 and 5, the sole 22 has an outer diameter greater than that of the ground terminal 15. Two slots 42 (see Figure 5) of rectangular shape, diametrically opposed, are provided in

  this sole 22 for the passage of the notched tabs 26.

  Notches 43, in V, and having the same angular position

  the average area that the openings 42 are provided at the periphery of the sole 22 to allow the passage of the longitudinal ribs 33, projecting inwards, of the cap 20. As visible in FIG. 2, the stud t crosses one of the notches 43. A notch 44, of substantially rectangular shape, is provided at mid-distance from the notches 43, opposite a tongue 21, for the passage of the branches of the clamp 17a intended to clamp the

sheath 13 of the coaxial cable.

  It can be noted that the tabs 26 and 37 are provided on the outer edge of the pods 15 and 10; in 1l variant, these tabs could be provided, for at least one of these lugs, on the inner edge of the washer

  limiting the passage opening of the screw 3.

  The clamp 17a of the terminal 15, which is located in the immediate vicinity of the washer of this terminal, and which is separated from the clamp 17 by notches 45, makes it possible to ensure complete shielding of the bare area of the coaxial cable 5, and therefore the continuity of the cable shielding

  up to the removable hood or hood 20 for suppressing interference.

  The assembly and assembly of the core formed by the assembly of the ground lug 15, the sole 22, the insulating ring 8, the antenna lug 10, immediately result from the following explanations and from the observation

in Figure 5.

  It is sufficient, after having properly oriented the sole 22 relative to the ring 8, to engage the tongues 21 in the corresponding grooves 25 by a translational movement. Then, after proper orientation of the terminal 15, is engaged, also by a translational movement parallel to the direction of the axis of the ring 8, the tabs 26 in the slots 42 and then in the parts 28 of the corresponding grooves 27. The terminal 15 is pressed in

  so as to properly press the sole 22 against the ring 8.

  The hooking of the notches 31 on the radial walls 32 ensures the mechanical retention of the terminal 15, and of the sole 22 trapped by this terminal, on the ring 8. A similar mounting is carried out, by a translation in opposite directions, for the terminal 10, the notched legs and the branch 11 also notched, are engaged in the grooves 39

ring 8.

  The assembly of this core is very simple and can be self-powered, the movements to be executed for this assembly

  being essentially translational movements.

  The complete core thus mounted, can be put in place D5, thereafter, around a screw 3 of an antenna base, the fixing on the wall 2 being carried out using the nut 6, screwed on the screw 3, with the interposition of the washer 7, between the nut and the terminal 10. The connection

  -electric to the coaxial cable 5 is then carried out.

  The anti-interference cap or cover 20 is then put in place. after mounting the antenna, by simply being threaded, by translation, around the core until the elastic tabs 21, by their projecting part 24, snap into the openings 19 of the cap 20. The latter has a simple shape, substantially in a cylinder of revolution. Its dimensions are small, both in diameter and in height which makes it possible to mount this interference suppression cover by the passage holes intended for the fixing of the retrofit antennas, the passages

  provided by the manufacturers being relatively narrow.

  If it is necessary to change the antenna, the suppressor hood 20 can be easily removed by exerting traction on the bottom of this hood, traction

  facilitated by the presence of the groove 36, or the like, for-

  mant gripping medium. The extraction of the cover or cover 20 allows the nut 6 for fixing the assembly of the antenna to be laid bare and therefore the latter to be dismantled. By using the assembled core, which was discussed above, and forming a connection device according to the invention, it is possible to easily remedy an unforeseen interference which would disturb the listening of the mounted car radio. It suffices in this case, in fact, to put in place by simple snap-fastening on the tabs 21, a cover 20, the mounting of which had not been planned initially

  because we didn't expect such interference.

  Referring to Figure 3 we can see an alternative embodiment according to which the insulating ring 8 has, at the end of the grooves 25 facing the wall 2, shoulders 46. The radial dimension of these shoulders may correspond to the depth grooves so that the outer radial surface of these shoulders 46 is tangent to the envelope surface of the ring 8. The tongues 21 are crimped at 47, that is to say at their connection to the sole 22 , on this shoulder 46, to ensure, or reinforce, the mechanical assembly of the sole 22 with the ring 8. The ground lug 15 may also have notched tabs 26 not visible in FIG. 3. The other elements of the figure 3, identical to elements already described above, are designated by the same reference numerals, without their

description be repeated.

  FIG. 4 illustrates an alternative embodiment according to which the elastic tongues 21a are arranged so as to engage around the cap 20a, which always has the openings 19. The tongues 21a have projections 24a oriented radially inwards, obtained from preferably by deformation of the tongues 21a into an angular zone. The openings 19 of the interference suppression cap 20a can be provided in the bottom of depressed areas 48 of the cylindrical wall of the cap 20a, these depressed areas 48 extending parallel to the axis of the cap 20a. Inwardly, in the radial direction, these zones 48 constitute protruding parts,

  substantially rectangular cross section (which

  should be compared to the longitudinal ribs 33 of Figures 1, 2 and 5). The inwardly projecting parts, corresponding to the zones 48, are engaged in grooves 49, of corresponding section, provided at the periphery of the

ring 8.

  Figure 6 illustrates, in perspective, an alternative embodiment of the ground lug 15b and the sole 22k. The clamp 17b, comprising, as in the case of FIG. 1, two parts intended respectively for clamping the outer sheath 16 and the sheath 13 of the coaxial cable (see

  Figure 1) is integral with the sole 22b of which it constitutes

  kills a radial extension, instead of being integral with the mass terminal 15k. This terminal or washer 15b mass can, therefore, include a greater number of teeth 23 since a fraction of its periphery is no longer

occupied by the clamp 17b.

  FIG. 7 illustrates, in perspective, another variant according to which the washer or ground lug, and the sole carrying the elastic tongues 21c are joined together and merged into a single piece 22c provided with both notched tabs 26c and elastic tongues 21c . This part 21c is also provided with a clamp 17c, forming

  radial extension for the coaxial cable.

  FIG. 8 illustrates an alternative embodiment according to which the elastic tabs 21d, intended for the snap-fastening of the interference suppression cover, are formed by regions of the outer wall of the insulating ring 8d, these regions being determined by recesses 50 provided in the ring, and intended to give said regions 21d sufficient elasticity for snap-fastening. Each tongue or region 21d has on its outer surface, a boss or lug such as 51 intended to cooperate with the

  hole 19 associated with the cover 20. The electrical contact means

  plate C to ensure the electrical connection between the cover and the mass can be constituted by thin metal tabs, forming springs, for example provided on the mass washer 15, but without these spring tabs

are involved in the click-in.

  The connection device according to the invention is of a low cost price. Its design leads to a miniaturization allowing mounting on any vehicle with obtaining a practically perfect shielding. The sole, such as 22, comprising the elastic tabs for snap-fastening and electrical contact, can be produced

in cupronickel or mu-metal.

256,946

Claims (12)

  1. Connection fitting for an antenna base (1) intended to be fixed to a wall (2), in particular a sheet of auto bodywork, said base comprising a 'fixing member (3) connected electrically to the antenna (A) suitable for passing through an opening (4) provided in the wall, the device do: connection comprising, on the side of the wall opposite to the base, blocking means (B) of the fixing member, electrical isolation means (P) * l- dfl this member (2) relative to a mass, and electrical xccorédemenr means (R) of a coaxial cable (5) to J. 'fixing member' 3 ) characterized by the fact that it rc, mprend elastic tongues (21, 21à, 21c, 21d), x zientées longitudinalemaet, adapted to cooperate, to ensure a snap-fastening, with openings (19) provided on a metal capuziicn (- O) interference suppressor intended to wrap the fixing member (3) as well as the bceage t) and connection (R) means, contact means   (C> being further provided for establishing an electrical connection   stick between this cap (20) and the mass (15, 2), during 1 snap-on du-dt capucnhorn (20) 2..DposLhef according to claim 1 characterized in that the elastic tabs (21, 21a, 21)   are metal Lques and constitute the means of electrical contact stick (C).   3. Dispositiú e! On claim 1 or 2 characterized in that the tongues (21, 21c 21d) are dispees e so as to engage inside the capuctoK ('20) in which case they conortLent projections (24 , 51} towards' exterJU-r, or are arranged so that   engage around the cap, the tabs (21a) include   so many These projections (24a) inward.   4. Device according to any one of the claims.   primitive cations, characterized by the fact that the sail-   ies '24, 24a streets on the tabs are obtained by   deformation of a tongue zolre.   5. Device according to any one of the claims.   previous cations, characterized in that the elastic tongues (21, 21a, 21-) are integral with a sole (22, 22a, 22b, 22c), in particular in the form of a washer whose mean plane is substantially orthogonal to the direction - longitudinal tion of the tabs.   6. Device according to claim 5, characterized in that the sole (22, 22â, 22b) is clamped between a mass washer (15, 15b) and an insulating ring (8) surrounding the fixing member, the sole (22, 22a, 22k) and the earth washer (15, 15b) being in electrical contact. 7. Device according to claim 5 comprising a mass washer, characterized in that the sole and the mass washer form one and the same piece (22Q).   8. Device according to claim 6 or 7, characterized in that the mass washer (15, 15b, 22Z) has notched tabs (26, 26c) substantially orthogonal to the mean plane of the. washer, suitable for   engage in grooves (27) provided on an iso- ring   lante (8) intended to surround the fixing member (3), the notches (31) of the tabs (26, 26c) being able to catch on   on radial walls (32) of these grooves.   9. Device according to all of the claims   6 and 8 characterized in that the sole (22, 22b) has a diameter greater than that of the mass washer (15, 15b) and that lights (42) are provided in the sole for the passage of the notched tabs ( 26) of the washer (15, 15b).   10. Device according to any one of the claims.   previous cations in which an antenna terminal (10) is provided on the side of an insulating ring (8), surrounding the fixing member, opposite to that equipped with the ground washer, characterized in that this terminal d antenna (10) is also equipped with notched tabs (37, 11) substantially orthogonal to the mean plane of the terminal, suitable for cooperating with corresponding grooves (39) provided in said insulating ring, this antenna terminal (10) being in electrical connection with the fixing member (3) in particular thanks to a metal clamping washer (7), said antenna terminal (10) being intended to be connected to the coaxial cable (5).   11. Device according to any one of the claims.   previous cations, characterized in that the interference suppression cap (20) comprises, towards its bottom (35) opposite the wall (2) on which the antenna base (1) is fixed,   a gripping means, such as a relief or a hollow, in particular   a peripheral groove (36) to facilitate exercise   traction for disassembly of this cap (20).   12. Device according to claim 1, in which the electrical isolation means (B) of the fixing member (3) comprise an insulating ring (8d), characterized in that the elastic tongues (21d) oriented longitudinally, to snap on the metal cap, are provided on the insulating ring (8d),   surrounding the fixing member, at the periphery thereof.   13. Metal interference suppression cap for   device according to any one of the claims   previous, characterized in that openings (19) are provided in this cap to cooperate and ensure snap-fastening with elastic tongues (21, 21a, 21ú,   21d) oriented longitudinally, of the connecting device.   14. Metal cap according to claim 13 characterized in that it comprises at least one longitudinal rib (33), which corresponds on the outer wall of the cap, a recess in which is housed   an orientation stud (t), provided under the base.