EP0720250A1 - Antenna for an automobile and an active impedance adaptor for such an antenna - Google Patents

Antenna for an automobile and an active impedance adaptor for such an antenna Download PDF

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Publication number
EP0720250A1
EP0720250A1 EP95402681A EP95402681A EP0720250A1 EP 0720250 A1 EP0720250 A1 EP 0720250A1 EP 95402681 A EP95402681 A EP 95402681A EP 95402681 A EP95402681 A EP 95402681A EP 0720250 A1 EP0720250 A1 EP 0720250A1
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EP
European Patent Office
Prior art keywords
annular
antenna
antenna according
base
piece
Prior art date
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Granted
Application number
EP95402681A
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German (de)
French (fr)
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EP0720250B1 (en
Inventor
Raymond Caillot
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Compagnie Europeenne de Composants Electroniques LCC CICE
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Mecaniplast
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Publication of EP0720250A1 publication Critical patent/EP0720250A1/en
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Publication of EP0720250B1 publication Critical patent/EP0720250B1/en
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/1207—Supports; Mounting means for fastening a rigid aerial element
    • H01Q1/1214—Supports; Mounting means for fastening a rigid aerial element through a wall

Definitions

  • the present invention relates to an antenna for a motor vehicle capable of receiving an active impedance adapter as well as an active impedance adapter assembly for such an antenna.
  • the strand of an antenna must have a certain length adapted to this reception; when it is desirable, for implantation reasons, to limit the length of the antenna strand, use is made of an active antenna impedance adapter, that is to say a powered impedance adapter in electrical power, the role of which is to reinforce the signal received by the antenna to compensate for this reduction in length; in fact, an antenna that is too long is not without problems: difficulties in maneuvering in individual garages with generally low ceilings, difficulties during automatic vehicle washing operations, whistling at high speed, or others.
  • the antenna strand is generally supported by a base; so far, the active antenna impedance adapter is in an independent box placed in the vicinity of the radio receiver or the base, or inside the base itself; such an arrangement, which requires a particular assembly, is bulky and inconvenient when the antenna is intended to equip a motor vehicle.
  • the active impedance adapter When the active impedance adapter is inside the base, it is necessary that it has a height suitable for receiving it; such a height then leads to a base that is too high when it is not decided to add an active impedance adapter to the antenna; in addition, the base being placed outside the passenger compartment of the vehicle, the active impedance adapter is subjected to thermal stresses which are harmful to it.
  • the present invention aims to avoid the above drawbacks and relates to an antenna capable of receiving, or not, an active adapter of space-saving impedance, associated with the conventional antenna base.
  • the element integral with the male element is an insulating ring carried by the base, and the centering surface of the insulating annular part is a cylindrical recess formed in the annular insulating part.
  • the centering surface of the insulating annular part is an annular spacer which is pressed against the inner face of the annular core part and which cooperates with the male element.
  • the annular spacer is molded with the insulating annular part; the annular spacer has an axial annular extension on which the annular core piece is centered.
  • the annular mass element consists of an annular mass-taking part and an annular mass part.
  • the male element of the connecting member is a threaded rod secured to the base, and the female element is a nut carrying the contact means and screwed onto the rod.
  • the male element of the connecting member is the threaded rod of a head screw and the female element is a tapping that comprises the base, the contact means being constituted by the head of the screw.
  • the contact means rests directly on the annular core part.
  • an active antenna impedance adapter consisting of a plate in the form of a flat washer, one of the faces of the plate carrying an annular conductive track of output coming into abutment against the annular core part and the other face carrying an annular conductive entry track on which abuts the contact means, the face of the plate which carries the entry track also carrying the means electrical adapters of an adapter circuit supplied electrically by a power supply terminal carried by said wafer, the output track being connected to the output terminal of the adapter circuit by means of a metallized through hole the wafer, a ground terminal of said adapter circuit being electrically connected to the annular ground element of the nozzle.
  • the active adapter is placed in a housing consisting of a cylindrical skirt held by clipping by the annular mass element of the end piece; the earth terminal of the active adapter is connected to earth by a pin secured to the housing.
  • the housing is closed by a cover.
  • the base carries clipping pins for clipping the base on the edges of an opening of the bodywork element.
  • the insulating annular piece carries at least one column; the column is adapted to be received in a chimney provided in the base, the chimney having ribs or beads to increase the effect of holding the clipping pins on the bodywork element.
  • the present invention also relates to an assembly consisting of an active adapter, a housing, a protector and a cover, these constituents being as used in the antenna having the characteristics mentioned above.
  • an antenna base 30 for a motor vehicle such a known base is generally made up of a part hollow molded plastic material defined by a wall of generally frustoconical shape developed from a base in the general shape of an ellipse surrounded at its lower part by a sealing lip bearing on a bodywork element 40; at the upper part of the base 30, a metal pin, for example made of brass, not shown, internally threaded, is intended to receive the externally threaded end of an antenna strand; this metal pin is in electrical contact with a metal support covered by the plastic material of the base 30 and comprising a male element in the form of a threaded rod 31 intended to receive a female element in the form of a tightening nut 32; at its exit from the base 30, the threaded rod 31 is surrounded by plastic material constituting an insulating ring 42; when the base 30 is placed on the body element 40, the insulating ring 42 passes through an opening 41 of the body element 40; a metal pin, for example made of brass, not shown, internally
  • the end piece 20 is produced by the assembly of annular parts: an annular mass-taking part 21 having raised teeth 43, an annular mass part 22, an insulating annular part 23, an annular core part 24; the annular parts for mass taking 21, mass 22 and core 24 are metallic, made of thin cut and folded sheet metal; the insulating annular piece 23 is made of plastic; the end piece 20 is assembled by crimping tabs, which have the metallic annular parts, in corresponding housings of the annular insulating plastic part 23: such housings are visible in FIG. 5 under the references 61, 62 although this FIG. 5, like FIG.
  • the insulating part 23 also has notches 63 and 64, also visible in FIGS. 4 and 5; the notches 63, three in number arranged circumferentially at 120 degrees from each other, each receive an axial elastic tab of the annular mass piece 22, tab carrying a transverse boss 35 whose role will appear below; the notch 64 makes it possible to receive the end of the coaxial cable 27, more particularly the stripped end of the core 26 of said cable 27, and a tab 39 of the annular core part 24 to which is fixed, by welding, said end of the core 26.
  • the annular insulating part 23 moreover has at its center a cylindrical recess 44, of a diameter barely greater than that of the insulator 42 of the base 30.
  • the annular part for taking mass 21 is extended along a tail 34 crimped around a stripped part of the mass braid 25 of the cable 27 as well as around the cable itself.
  • Such a tip 20 is known and of the kind described, for example, in FR-A-2,563,946.
  • the assembly of the assembly is carried out as follows.
  • the base 30 being on the bodywork element 40 in the position shown in FIG. 1, the end piece 20 of the cable 27 is threaded on the threaded rod 31 and on the insulator 42, then a nut 32 is screwed onto the threaded rod 31.
  • the teeth 43, of the annular grounding piece 21 scratch the underside of the bodywork element 40 which, as is known, is the electrical mass of the vehicle ; therefore, the ground braid 25 of the cable 27 is connected to said ground; in parallel, the antenna signal is transmitted by the threaded rod 31 to the nut 32, thanks to the tightening cooperation of their respective threads, which nut 32 transmits said antenna signal to the core 26 of the cable 27 thanks to the cooperation of the transverse face 33 of the nut 32 and of the annular core part 24, bearing one on the other.
  • such a tip 20 is arranged so as to allow the addition, if desired, of an active impedance adapter; in the case of an adaptation of the antenna signal, it is essential that the annular core part 24 of the end piece 20 does not touch the threaded rod 31, in which case the adaptation circuit would be short-circuited; to prevent manufacturing tolerances from leading to centering of the end piece 20, by cooperation of the insulator 42 of the base 30 with the cylindrical recess 44 of the annular insulating part 23, insufficient from this point of view, the central hole 29 of the annular core part 24 is provided large enough for this contact to be avoided for sure.
  • the insulating annular part 23 of the end piece 20 has a centering surface defined by the recess 44 cooperating with a part integral with the male element or threaded rod 31, with the connecting member: the orifice made in the annular core part 24, for the passage of said male element 31, has, in the plane of the annular core part 24, a contour circumscribed with respect to that of the male element which is undoubtedly isolated of the annular core part 24; thanks to this arrangement, it is possible, if desired, without any modification of the base or of the end piece, to allow, or not, the addition of an active impedance adapter; the addition of such an adapter will be described below with reference to FIG. 2.
  • the assembly of the antenna according to FIG. 1 ends with the fitting of a metal cover 36 which has a notch 38 for the passage of the cable 27 and the maintenance of which is ensured by three blocking passages 37 which it presents and in which the three bosses 35 of the legs of the annular mass piece 22 of the end piece 20 are placed elastically; thus, the metal cover 36 is connected to ground and plays the role of shielding.
  • an active adapter consisting of a plate 10, in the form of a flat washer, of double-sided printed circuit; one of the faces, the face 11 in the figure, carries an annular conductive track 12, called the exit track, and the other face, the face 13, carries an annular conductive track 14, called the entry track; the actual reinforcement of a signal is achieved by electrical and electronic components connected by a circuit adaptation carried out according to printed traces arranged on the input face 13 around the input track 14 which constitutes the input terminal of this circuit; some of said components have been illustrated in the figure under the reference 15; such a circuit requiring for its operation an electrical supply, the supply terminal 16 of this circuit is connected by welding to a supply conductor 76; the output terminal of said supply circuit, located on the input face 13 of the wafer 10, is electrically connected to the output track 12, located on the opposite face 11, by means of a metallized hole 17 which crosses the plate 10.
  • the plate 10 is intended to be threaded onto the threaded rod 31 of the base 30; therefore, the insulating part of the double-sided printed circuit has a suitable central opening 19 having a diameter slightly greater than that of the threaded rod 31; for reasons which will appear more clearly below, the exit track 12 of annular shape has its small diameter which is larger than that of the central opening 19, while the small diameter of the entry track 14, also annular in shape, is at most equal to the diameter of said central opening 19.
  • a metal box 50 is associated with the plate 10;
  • the housing 50 consists of a cylindrical skirt 51 whose internal diameter is slightly greater than the external diameter of the plate 10 so as to receive said plate 10 while it extends transversely relative to the longitudinal axis of the housing 50 ;
  • the skirt 51 is extended at its upper part, with respect to FIG. 2, along a transverse shoulder 56 to which a cylindrical collar 59 is connected, having the same axis as that of the skirt 51 and extending, relative to the shoulder 56 , on the side opposite that from which extends the skirt 51;
  • the housing 50 is adapted to be mounted on the end piece 20 in the manner of the cover 36 described with reference to FIG. 1; for this purpose, the flange 59 has a diameter suitable for this purpose and has three blocking passages 57 and a notch 58, similar to the passages 37 and the notch 38 of the cover 36.
  • the adaptation circuit needing to receive the mass for its operation, and the housing 10 being grounded, the shoulder 56 of the housing 10 is used to bring the mass to the right of the adaptation circuit: the shoulder 56 carries a pin 52 directed towards the inside of the skirt 51 and adapted to pass through a notch 18 of the plate 10; when the latter is mounted in the skirt 51 until it touches the inner face of the shoulder 56, the end of the pin 52 is welded to the earth terminal of the adaptation circuit on the face 13 of the input of the plate 10.
  • the housing 50 is adapted to receive a plastic protector 70 inside the skirt 51;
  • the protector 70 comprises an annular dome 73 whose concavity is directed towards the inside of the skirt 51 and which is surmounted in its center by a cylindrical chimney 74; at the outer periphery of the dome 73, at least one annular tooth 71 is adapted to come to cooperate with at least one transverse surface 67 formed on the inner face of the skirt 51, for holding the protector 70 in the skirt 51;
  • the protector 70 includes a grommet 72 for the passage of the supply wire 76; when the plate 10 and the protector 70 are in place in the housing 50, the end of the chimney 74 participates in the maintenance of the plate 10, and the dome 73 defines a space for the components 15 of the adaptation circuit which it protected.
  • the lower end of the skirt 51 is closed by a metal cover 53 which has a circular boss 54 adapted to be clipped into an annular groove 55 that the skirt 51 has on its outer surface; a hole 68 in the cover 53 allows the passage of the supply wire 76.
  • the housing 50, the wafer 10 and the protector 70 constitute, once assembled, an active adapter subassembly that is easy to handle.
  • the assembled assembly is shown in FIG. 3.
  • FIG. 3 an alternative embodiment of the centering surface of the annular insulating part 23 has been shown, which makes it possible to provide an isolation space between the annular core part 24 and the male element or threaded rod 31; according to this variant, in the annular insulating part 23 of the end piece 20 is introduced a centering spacer, made of insulating material, pressed against the inner face of the annular core part 24, as shown at 28 in FIG. 2.
  • this same object is achieved by bringing such a spacer in one piece with the rest of the annular insulating part; it then suffices, for the production of the end piece, to replace the insulating annular part 23 with an insulating annular part 123, shown in FIGS. 4 and 5, all other things being equal; the part 123 comprises a spacer 69 molded with the rest of the part and whose central passage 66 has a diameter less than that of the central hole 29 of the annular core part 24.
  • Figures 6 and 7 relate to another type of antenna base that can receive, if desired, also an active impedance adapter.
  • the base 130 of Figure 6 is more particularly suitable for a vehicle roof antenna placed at the rear thereof.
  • the base 130 consists of a hollow piece 134 molded in plastic material defined by a wall of generally frustoconical shape having at its lower part a sealing lip 146 for its support on the bodywork element 140; an internally threaded metal pin 135 is intended to receive the antenna strand; the metal pin 135 extends along a cylindrical tail 136, the axis of which is inclined relative to the axis of the pin 135, internally hollowed out by a thread 155; the pin 135 and the tail 136, in one piece, are molded, inside the hollow piece 134, by a plastic material 137 of relatively low hardness, compressible, and the end of the tail 136 which projects beyond the hollow part 134 is overmolded with an insulator 142 of relatively low hardness also; the cross section of the insulator 142 is of generally rectangular shape, except for a protruding positioning appendage 144; when the base 130 is placed on the body element 140, the end of the insulator 142 passes through an opening 141, of this element, of
  • the base 130 which has just been described is adapted to cooperate with a tip 120 of coaxial cable.
  • the tip 120 is of the type of the tip 20 described above and produced by the assembly of annular parts 221, 222, 223, 224 similar to parts 21, 22, 123, 24, respectively, described above; the difference between the end piece 120 and the end piece 20 is that the annular parts 221, 222, 223 are of rectangular sections instead of circular ones; in addition, the insulating annular piece 223 carries, in one piece with it, four balusters 139 adapted to take place in four chimneys 138 provided in the base 130.
  • a housing 150 can be associated with the tip 120, a housing 150, a plate 100, a protector 170, a cover 153, similar, respectively, to the housing 50, to the plate 10, to the protector 70, to the cover 53 , except for their outer outline which is rectangular instead of circular.
  • a threaded rod 131 which plays the role of the preceding threaded rod 31, is not carried by the base 130 but is the threaded rod 131 of a screw 151 having a head 132 provided with a face transverse support 133 for cooperation with the entry face of the plate 100, the screw 151 being adapted to be screwed into the internal thread 155 of the base 130.
  • the insulating annular part 223 also differs from the annular part 123 in that the centering surface is produced by an axial annular extension 169 on which the annular core part 224 is centered, the external face of the extension 169 being flush with the external face of the annular core piece 224; thus, it is the radial thickness of the extension 169 which physically defines the isolation space between the threaded rod 131 and the annular core part 224.
  • the assembly when assembled and mounted, takes up little space axially under the bodywork element 140, which is well suited to the rear of a vehicle where the space available for the vehicle interior between the vehicle roof and the interior trim is more reduced than at the front; for this reason also, the supply wire 76 is mounted transversely with respect to the wafer 100, as illustrated in phantom in FIG. 6.
  • clipping pins 145 are provided at the edge of the insulation 142 of the base 130 for temporary clipping thereof on the edges of the opening 141 of the 'body element 140; from inside the vehicle, it is then possible to mount the sub-assembly constituted by the end piece 120, the housing 150, the plate 100 and the protector 170 on the base by introducing the balusters 139 in the chimneys 138 of the 'base 130; longitudinal ribs 147 are provided inside the chimneys 138, in line with the insulation 142, the balusters 139 being thus momentarily held by elastic clamping of the material, and it is possible to let go of the sub-assembly, to present and to screw the screw 151; the introduction of the balusters 139 in the chimneys 138 causes the material of the insulator 142 to swell, due to the ribs 147, which reinforces the effect of holding the clipping pins 145 on the bodywork element 140.
  • each bead 247 is in line with a pin 145; the beads 247 play the same role, described above, as that of the columns 139; chimneys 138 can also have a slightly conical shape, as shown in Figure 8.

Abstract

The antenna has a mounting (30) which is fixed to part of the bodywork (40) of a vehicle and accepts a coaxial cable termination (20). The coaxial cable termination comprises an earthing ring (21,22), an insulating ring (23) and an annular core (24) connected to the core (26) of the cable (27). The signal picked up by the antenna is passed to a threaded rod (31) through an opening (41) in the bodywork and the central opening of the cable termination. Around this opening, the insulating ring has a centering surface (44) which co-operates with an element (42) integral with the rod. The opening in the annular core differs from that of the contour of the threaded rod so as to leave an insulating space between them.

Description

La présente invention concerne une antenne pour véhicule automobile susceptible de recevoir un adaptateur actif d'impédance ainsi qu'un ensemble adaptateur actif d'impédance pour une telle antenne.The present invention relates to an antenna for a motor vehicle capable of receiving an active impedance adapter as well as an active impedance adapter assembly for such an antenna.

On sait que, pour la réception d'ondes radio en modulation d'amplitude, courtes, petites et grandes ondes, le brin d'une antenne doit avoir une certaine longueur adaptée à cette réception ; lorsqu'il est souhaitable, pour des raisons d'implantation, de limiter la longueur du brin d'antenne, on a recours à un adaptateur actif d'impédance d'antenne, c'est-à-dire un adaptateur d'impédance alimenté en puissance électrique, dont le rôle est de renforcer le signal reçu par l'antenne pour compenser cette diminution de longueur ; en effet, une antenne trop longue n'est pas sans poser des problèmes : difficultés de manoeuvrer dans des garages individuels à plafond généralement bas, difficultés lors des opérations de lavage automatique du véhicule, sifflements à grande vitesse, ou autres.It is known that, for the reception of radio waves in amplitude modulation, short, small and large waves, the strand of an antenna must have a certain length adapted to this reception; when it is desirable, for implantation reasons, to limit the length of the antenna strand, use is made of an active antenna impedance adapter, that is to say a powered impedance adapter in electrical power, the role of which is to reinforce the signal received by the antenna to compensate for this reduction in length; in fact, an antenna that is too long is not without problems: difficulties in maneuvering in individual garages with generally low ceilings, difficulties during automatic vehicle washing operations, whistling at high speed, or others.

Le brin d'antenne est généralement supporté par une embase ; jusqu'ici, l'adaptateur actif d'impédance d'antenne est dans un boîtier indépendant placé au voisinage du récepteur radio ou de l'embase, ou à l'intérieur de l'embase elle-même ; une telle disposition, qui nécessite un montage particulier, est encombrante et mal commode lorsque l'antenne est destinée à équiper un véhicule automobile. Lorsque l'adaptateur actif d'impédance est à l'intérieur de l'embase, il est nécessaire que celle-ci ait une hauteur adaptée à le recevoir ; une telle hauteur conduit alors à une embase trop haute lorsqu'il n'est pas décidé d'adjoindre à l'antenne un adaptateur actif d'impédance ; en outre, l'embase étant placée à l'extérieur de l'habitacle du véhicule, l'adaptateur actif d'impédance est soumis à des contraintes thermiques qui lui sont préjudiciables.The antenna strand is generally supported by a base; so far, the active antenna impedance adapter is in an independent box placed in the vicinity of the radio receiver or the base, or inside the base itself; such an arrangement, which requires a particular assembly, is bulky and inconvenient when the antenna is intended to equip a motor vehicle. When the active impedance adapter is inside the base, it is necessary that it has a height suitable for receiving it; such a height then leads to a base that is too high when it is not decided to add an active impedance adapter to the antenna; in addition, the base being placed outside the passenger compartment of the vehicle, the active impedance adapter is subjected to thermal stresses which are harmful to it.

Jusqu'à ce jour, il n'existe pas d'antenne susceptible, sans aucune modification de l'embase, de permettre l'adjonction, si on le désire, d'un adaptateur actif d'impédance d'antenne.To date, there is no antenna capable, without any modification of the base, of allowing the addition, if desired, of an active antenna impedance adapter.

La présente invention a pour but d'éviter les inconvénients ci-dessus et pour objet une antenne susceptible de recevoir, ou non, un adaptateur actif d'impédance peu encombrant, associé à l'embase classique d'antenne.The present invention aims to avoid the above drawbacks and relates to an antenna capable of receiving, or not, an active adapter of space-saving impedance, associated with the conventional antenna base.

Ainsi, selon l'invention, une antenne pour véhicule automobile comportant une embase d'antenne destinée à être fixée sur un élément de carrosserie, ladite embase recevant, d'une part, un brin d'antenne et, d'autre part, un embout de câble coaxial relié à un récepteur radio, ledit embout étant constitué d'un empilage de pièces annulaires comportant, autour d'un même passage central :

  • au moins un élément annulaire de masse,
  • une pièce annulaire isolante, et
  • une pièce annulaire d'âme,
l'élément annulaire de masse étant en contact avec l'élément de carrosserie et étant relié à la tresse de masse que comporte le câble coaxial, la pièce annulaire d'âme étant reliée à l'âme dudit câble coaxial, le signal fourni par le brin d'antenne étant reçu par un organe de liaison fileté, qui comporte un élément mâle et un élément femelle et qui assure le maintien mécanique de l'embase et de l'embout par rapport à l'élément de carrosserie, ledit élément mâle dudit organe de liaison fileté traversant une ouverture de l'élément de carrosserie et traversant l'embout par son passage central, un moyen de contact étant solidaire de l'un des éléments de l'organe de liaison fileté pour conduire le signal fourni par le brin d'antenne en direction de la pièce annulaire d'âme, est caractérisé par le fait que la pièce annulaire isolante de l'embout comporte, autour du passage central dudit embout, une portée de centrage coopérant avec l'élément mâle ou un élément qui en est solidaire, l'orifice pratiqué dans la pièce annulaire d'âme pour le passage dudit élément mâle ayant, dans le plan de ladite pièce annulaire d'âme, un contour circonscrit par rapport à celui de l'élément mâle, de façon à ménager un espace d'isolement entre les deux contours.Thus, according to the invention, an antenna for a motor vehicle comprising an antenna base intended to be fixed to a bodywork element, said base receiving, on the one hand, an antenna strand and, on the other hand, a end of coaxial cable connected to a radio receiver, said end being made up of a stack of annular parts comprising, around a same central passage:
  • at least one annular element of mass,
  • an insulating annular piece, and
  • an annular piece of core,
the annular mass element being in contact with the body element and being connected to the mass braid that the coaxial cable comprises, the annular core part being connected to the core of said coaxial cable, the signal supplied by the antenna strand being received by a threaded connecting member, which comprises a male element and a female element and which ensures the mechanical retention of the base and of the end piece relative to the body element, said male element of said threaded connection member passing through an opening of the bodywork element and passing through the endpiece through its central passage, a contact means being integral with one of the elements of the threaded connection member to conduct the signal supplied by the strand antenna in the direction of the annular core part, is characterized in that the insulating annular part of the end piece comprises, around the central passage of said end piece, a centering surface cooperating with the male element the element or an element which is integral with it, the orifice made in the annular core part for the passage of said male element having, in the plane of said annular core part, a contour circumscribed with respect to that of the element male, so as to provide an isolation space between the two contours.

Avantageusement, l'élément solidaire de l'élément mâle est un anneau isolant portée par l'embase, et la portée de centrage de la pièce annulaire isolante est une creusure cylindrique ménagée dans la pièce annulaire isolante.Advantageously, the element integral with the male element is an insulating ring carried by the base, and the centering surface of the insulating annular part is a cylindrical recess formed in the annular insulating part.

En variante, la portée de centrage de la pièce annulaire isolante est une entretoise annulaire qui est plaquée contre la face intérieure de la pièce annulaire d'âme et qui coopère avec l'élément mâle. Avantageusement, l'entretoise annulaire est venue de moulage avec la pièce annulaire isolante ; l'entretoise annulaire présente un prolongement annulaire axial sur lequel est centrée la pièce annulaire d'âme.Alternatively, the centering surface of the insulating annular part is an annular spacer which is pressed against the inner face of the annular core part and which cooperates with the male element. Advantageously, the annular spacer is molded with the insulating annular part; the annular spacer has an axial annular extension on which the annular core piece is centered.

De préférence, l'élément annulaire de masse est constitué d'une pièce annulaire de prise de masse et d'une pièce annulaire de masse.Preferably, the annular mass element consists of an annular mass-taking part and an annular mass part.

Selon une forme de réalisation, l'élément mâle de l'organe de liaison est une tige filetée solidaire de l'embase, et l'élément femelle est un écrou portant le moyen de contact et vissé sur la tige.According to one embodiment, the male element of the connecting member is a threaded rod secured to the base, and the female element is a nut carrying the contact means and screwed onto the rod.

Selon une autre forme de réalisation, l'élément mâle de l'organe de liaison est la tige filetée d'une vis à tête et l'élément femelle est un taraudage que comporte l'embase, le moyen de contact étant constitué par la tête de la vis.According to another embodiment, the male element of the connecting member is the threaded rod of a head screw and the female element is a tapping that comprises the base, the contact means being constituted by the head of the screw.

Le moyen de contact s'appuie directement sur la pièce annulaire d'âme.The contact means rests directly on the annular core part.

Avantageusement, entre le moyen de contact et la pièce annulaire d'âme est inséré un adaptateur actif d'impédance d'antenne constitué d'une plaquette en forme de rondelle plate, l'une des faces de la plaquette portant une piste annulaire conductrice de sortie venant en appui contre la pièce annulaire d'âme et l'autre face portant une piste annulaire conductrice d'entrée sur laquelle vient en appui le moyen de contact, la face de la plaquette qui porte la piste d'entrée portant également les moyens électriques d'adaptation d'un circuit d'adaptation alimenté électriquement par une borne d'alimentation portée par ladite plaquette, la piste de sortie étant reliée à la borne de sortie du circuit d'adaptation par l'intermédiaire d'un trou métallisé traversant la plaquette, une borne de masse dudit circuit d'adaptation étant électriquement reliée à l'élément annulaire de masse de l'embout.Advantageously, between the contact means and the annular core part is inserted an active antenna impedance adapter consisting of a plate in the form of a flat washer, one of the faces of the plate carrying an annular conductive track of output coming into abutment against the annular core part and the other face carrying an annular conductive entry track on which abuts the contact means, the face of the plate which carries the entry track also carrying the means electrical adapters of an adapter circuit supplied electrically by a power supply terminal carried by said wafer, the output track being connected to the output terminal of the adapter circuit by means of a metallized through hole the wafer, a ground terminal of said adapter circuit being electrically connected to the annular ground element of the nozzle.

De préférence, l'adaptateur actif est placé dans un boîtier constitué d'une jupe cylindrique maintenue par clipsage par l'élément annulaire de masse de l'embout ; la borne de masse de l'adaptateur actif est reliée à la masse par un pion solidaire du boîtier.Preferably, the active adapter is placed in a housing consisting of a cylindrical skirt held by clipping by the annular mass element of the end piece; the earth terminal of the active adapter is connected to earth by a pin secured to the housing.

Le boîtier est fermé par un couvercle.The housing is closed by a cover.

Avantageusement, l'embase porte des picots de clipsage pour clipsage de l'embase sur les bords d'une ouverture de l'élément de carrosserie.Advantageously, the base carries clipping pins for clipping the base on the edges of an opening of the bodywork element.

De préférence, la pièce annulaire isolante porte au moins une colonnette; la colonnette est adaptée à être reçue dans une cheminée prévue dans l'embase, la cheminée comportant des nervures ou bourrelets pour augmenter l'effet de maintien des picots de clipsage sur l'élément de carrosserie.Preferably, the insulating annular piece carries at least one column; the column is adapted to be received in a chimney provided in the base, the chimney having ribs or beads to increase the effect of holding the clipping pins on the bodywork element.

La présente invention a également pour objet un ensemble constitué d'un adaptateur actif, d'un boîtier, d'un protecteur et d'un couvercle, ces constituants étant tels qu'utilisés dans l'antenne ayant les caractéristiques évoquées ci-dessus.The present invention also relates to an assembly consisting of an active adapter, a housing, a protector and a cover, these constituents being as used in the antenna having the characteristics mentioned above.

Pour mieux faire comprendre l'objet de l'invention, on va en décrire, maintenant, à titre d'exemple purement illustratif et non limitatif, les modes de réalisation représentés sur les dessins annexés.To better understand the object of the invention, we will now describe, by way of purely illustrative and nonlimiting example, the embodiments shown in the accompanying drawings.

Sur ces dessins :

  • la figure 1 est une vue éclatée partiellement en coupe d'une antenne selon l'invention sans adaptateur actif d'impédance ;
  • la figure 2 est une vue éclatée partiellement en coupe de l'antenne de la figure 1 munie d'un adaptateur actif d'impédance ;
  • la figure 3 montre l'ensemble selon la figure 2, les constituants de l'ensemble étant assemblés et montés ;
  • la figure 4 est une vue en coupe, selon la ligne IV-IV de la figure 5, d'une variante de l'une des pièces de l'embout selon la figure 2 ;
  • la figure 5 est une vue selon V-V de la figure 4 ;
  • la figure 6 est une vue analogue à la figure 2 mais représente un autre mode de réalisation de l'invention ;
  • la figure 7 est une vue selon selon VII-VII la figure 6 ;
  • la figure 8 est une vue en coupe partielle d'une variante de l'embase de la figure 6 ;
  • la figure 9 est une vue selon IX-IX de la figure 8.
In these drawings:
  • Figure 1 is an exploded view partially in section of an antenna according to the invention without active impedance adapter;
  • Figure 2 is an exploded view partially in section of the antenna of Figure 1 provided with an active impedance adapter;
  • Figure 3 shows the assembly according to Figure 2, the components of the assembly being assembled and mounted;
  • Figure 4 is a sectional view along the line IV-IV of Figure 5, of a variant of one of the pieces of the nozzle according to Figure 2;
  • Figure 5 is a view along VV of Figure 4;
  • Figure 6 is a view similar to Figure 2 but shows another embodiment of the invention;
  • Figure 7 is a view along VII-VII Figure 6;
  • Figure 8 is a partial sectional view of a variant of the base of Figure 6;
  • FIG. 9 is a view along IX-IX of FIG. 8.

En se reportant à la figure 1, on voit qu'on y a représenté schématiquement une embase 30 d'antenne pour véhicule automobile ; une telle embase, connue, est, de façon générale, constituée d'une pièce creuse moulée en matière plastique définie par une paroi de forme générale tronconique développée à partir d'une base en forme générale d'ellipse entourée à sa partie inférieure d'une lèvre d'étanchéité en appui sur un élément de carrosserie 40 ; à la partie supérieure de l'embase 30, un pion métallique, par exemple en laiton, non représenté, fileté intérieurement, est destiné à recevoir l'extrémité filetée extérieurement d'un brin d'antenne ; ce pion métallique est en contact électrique avec un support métallique recouvert par la matière plastique de l'embase 30 et comportant un élément mâle en forme de tige filetée 31 destinée à recevoir un élément femelle en forme d'écrou de serrage 32 ; à sa sortie de l'embase 30, la tige filetée 31 est entourée de matière plastique constituant un anneau isolant 42 ; lorsque l'embase 30 est placée sur l'élément de carrosserie 40, l'anneau isolant 42 traverse une ouverture 41 de l'élément de carrosserie 40; un pion de positionnement, non représenté, permet d'orienter l'embase 30 par rapport à la carrosserie du véhicule: l'embase ayant une forme tronconique inclinée par rapport à l'axe de la tige filetée 31, l'inclinaison doit être orientée vers l'arrière du véhicule. Une telle embase 30 est bien connue et ne sera donc pas décrite davantage ; il suffit, par exemple, de se reporter à FR-A-2 632 779.Referring to Figure 1, we see that there is shown schematically an antenna base 30 for a motor vehicle; such a known base is generally made up of a part hollow molded plastic material defined by a wall of generally frustoconical shape developed from a base in the general shape of an ellipse surrounded at its lower part by a sealing lip bearing on a bodywork element 40; at the upper part of the base 30, a metal pin, for example made of brass, not shown, internally threaded, is intended to receive the externally threaded end of an antenna strand; this metal pin is in electrical contact with a metal support covered by the plastic material of the base 30 and comprising a male element in the form of a threaded rod 31 intended to receive a female element in the form of a tightening nut 32; at its exit from the base 30, the threaded rod 31 is surrounded by plastic material constituting an insulating ring 42; when the base 30 is placed on the body element 40, the insulating ring 42 passes through an opening 41 of the body element 40; a positioning pin, not shown, allows the base 30 to be oriented relative to the vehicle body: the base having a frustoconical shape inclined relative to the axis of the threaded rod 31, the inclination must be oriented towards the rear of the vehicle. Such a base 30 is well known and will therefore not be described further; it suffices, for example, to refer to FR-A-2 632 779.

Pour sa liaison au brin d'antenne, un câble coaxial 27, relié par ailleurs au poste radio, dont le véhicule est équipé, et comportant notamment une âme 26 et une tresse de masse 25, est muni d'un embout 20.For its connection to the antenna strand, a coaxial cable 27, also connected to the radio, with which the vehicle is equipped, and comprising in particular a core 26 and a ground braid 25, is provided with a tip 20.

L'embout 20 est réalisé par l'assemblage de pièces annulaires : une pièce annulaire de prise de masse 21 ayant des dents relevées 43, une pièce annulaire de masse 22, une pièce annulaire isolante 23, une pièce annulaire d'âme 24 ; les pièces annulaires de prise de masse 21, de masse 22 et d'âme 24 sont métalliques, en tôle mince découpée et pliée ; la pièce annulaire isolante 23 est en matière plastique ; l'assemblage de l'embout 20 est réalisé par sertissage de pattes, que présentent les pièces annulaires métalliques, dans des logements correspondants de la pièce annulaire en matière plastique isolante 23 : de tels logements sont visibles sur la figure 5 sous les références 61, 62 bien que cette figure 5, comme la figure 4, correspondent à une pièce 123 qui est légèrement différente de la pièce 23 et qui sera décrite ci-dessous ; la pièce isolante 23 présente également des échancrures 63 et 64, visibles également sur les figures 4 et 5; les échancrures 63, au nombre de trois disposées circonférentiellement à 120 degrés l'une de l'autre, reçoivent chacune une patte élastique axiale de la pièce annulaire de masse 22, patte portant un bossage 35 transversal dont le rôle apparaitra ci-après ; l'échancrure 64 permet de recevoir l'extrémité du câble coaxial 27, plus particulièrement l'extrémité dénudée de l'âme 26 dudit câble 27, et une patte 39 de la pièce annulaire d'âme 24 à laquelle est fixée, par soudage, ladite extrémité de l'âme 26. La pièce annulaire isolante 23 présente par ailleurs en son centre une creusure cylindrique 44, d'un diamètre à peine supérieur à celui de l'isolant 42 de l'embase 30. La pièce annulaire de prise de masse 21 est prolongée selon une queue 34 sertie autour d'une partie dénudée de la tresse de masse 25 du câble 27 ainsi qu'autour du câble lui-même.The end piece 20 is produced by the assembly of annular parts: an annular mass-taking part 21 having raised teeth 43, an annular mass part 22, an insulating annular part 23, an annular core part 24; the annular parts for mass taking 21, mass 22 and core 24 are metallic, made of thin cut and folded sheet metal; the insulating annular piece 23 is made of plastic; the end piece 20 is assembled by crimping tabs, which have the metallic annular parts, in corresponding housings of the annular insulating plastic part 23: such housings are visible in FIG. 5 under the references 61, 62 although this FIG. 5, like FIG. 4, corresponds to a part 123 which is slightly different from the part 23 and which will be described below; the insulating part 23 also has notches 63 and 64, also visible in FIGS. 4 and 5; the notches 63, three in number arranged circumferentially at 120 degrees from each other, each receive an axial elastic tab of the annular mass piece 22, tab carrying a transverse boss 35 whose role will appear below; the notch 64 makes it possible to receive the end of the coaxial cable 27, more particularly the stripped end of the core 26 of said cable 27, and a tab 39 of the annular core part 24 to which is fixed, by welding, said end of the core 26. The annular insulating part 23 moreover has at its center a cylindrical recess 44, of a diameter barely greater than that of the insulator 42 of the base 30. The annular part for taking mass 21 is extended along a tail 34 crimped around a stripped part of the mass braid 25 of the cable 27 as well as around the cable itself.

Un tel embout 20 est connu et du genre de celui qui est décrit, par exemple, dans FR-A-2 563 946.Such a tip 20 is known and of the kind described, for example, in FR-A-2,563,946.

Le montage de l'ensemble s'effectue de la manière suivante.The assembly of the assembly is carried out as follows.

L'embase 30 étant sur l'élément de carrosserie 40 dans la position représentée sur la figure 1, l'embout 20 du câble 27 est enfilé sur la tige filetée 31 et sur l'isolant 42, puis un écrou 32 est vissé sur la tige filetée 31. Lorsque l'écrou 32 est serré, les dents 43, de la pièce annulaire de prise de masse 21, griffent la face inférieure de l'élément de carrosserie 40 qui, comme on le sait, est la masse électrique du véhicule ; dès lors, la tresse de masse 25 du câble 27 est reliée à ladite masse ; parallèlement, le signal d'antenne est transmis par la tige filetée 31 à l'écrou 32, grâce à la coopération en serrage de leurs filets respectifs, lequel écrou 32 transmet ledit signal d'antenne à l'âme 26 du câble 27 grâce à la coopération de la face transversale 33 de l'écrou 32 et de la pièce annulaire d'âme 24, en appui l'une sur l'autre. Compte tenu de la façon dont le signal d'antenne est transmis à l'âme 26 du câble 27, il n'était pas nécessaire de prendre des précautions particulières concernant le jeu circonférentiel existant entre la tige filetée 31 et le trou central 29 de la pièce annulaire d'âme 24 qu'elle traverse, ladite pièce annulaire d'âme 24 pouvant toucher la tige filetée 31 ; selon l'invention, un tel embout 20 est agencé en sorte de permettre l'adjonction, si on le désire, d'un adaptateur actif d'impédance ; dans le cas d'une adaptation du signal d'antenne, il est indispensable que la pièce annulaire d'âme 24 de l'embout 20 ne touche pas la tige filetée 31, auquel cas le circuit d'adaptation serait court-circuité ; pour éviter que les tolérances de fabrication ne conduisent pas à un centrage de l'embout 20, par coopération de l'isolant 42 de l'embase 30 avec la creusure cylindrique 44 de la pièce annulaire isolante 23, insuffisant de ce point de vue, le trou central 29 de la pièce annulaire d'âme 24 est prévu suffisamment grand pour que ce contact soit évité à coup sûr.The base 30 being on the bodywork element 40 in the position shown in FIG. 1, the end piece 20 of the cable 27 is threaded on the threaded rod 31 and on the insulator 42, then a nut 32 is screwed onto the threaded rod 31. When the nut 32 is tightened, the teeth 43, of the annular grounding piece 21, scratch the underside of the bodywork element 40 which, as is known, is the electrical mass of the vehicle ; therefore, the ground braid 25 of the cable 27 is connected to said ground; in parallel, the antenna signal is transmitted by the threaded rod 31 to the nut 32, thanks to the tightening cooperation of their respective threads, which nut 32 transmits said antenna signal to the core 26 of the cable 27 thanks to the cooperation of the transverse face 33 of the nut 32 and of the annular core part 24, bearing one on the other. Taking into account the way in which the antenna signal is transmitted to the core 26 of the cable 27, it was not necessary to take special precautions regarding the circumferential clearance existing between the threaded rod 31 and the central hole 29 of the annular core piece 24 which it passes through, said annular core piece 24 being able to touch the threaded rod 31; according to the invention, such a tip 20 is arranged so as to allow the addition, if desired, of an active impedance adapter; in the case of an adaptation of the antenna signal, it is essential that the annular core part 24 of the end piece 20 does not touch the threaded rod 31, in which case the adaptation circuit would be short-circuited; to prevent manufacturing tolerances from leading to centering of the end piece 20, by cooperation of the insulator 42 of the base 30 with the cylindrical recess 44 of the annular insulating part 23, insufficient from this point of view, the central hole 29 of the annular core part 24 is provided large enough for this contact to be avoided for sure.

Ainsi, la pièce annulaire isolante 23 de l'embout 20 comporte une portée de centrage définie par la creusure 44 coopérant avec une pièce solidaire de l'élément mâle ou tige filetée 31, de l'organe de liaison : l'orifice pratiqué dans la pièce annulaire d'âme 24, pour le passage dudit élément mâle 31, a, dans le plan de la pièce annulaire d'âme 24, un contour circonscrit par rapport à celui de l'élément mâle qui se trouve, à coup sûr, isolé de la pièce annulaire d'âme 24 ; grâce à cette disposition, il est possible, si on le souhaite, sans aucune modification de l'embase ou de l'embout, de permettre, ou non, l'adjonction d'un adaptateur actif d'impédance ; l'adjonction d'un tel adaptateur sera décrit ci-dessous à propos de la figure 2.Thus, the insulating annular part 23 of the end piece 20 has a centering surface defined by the recess 44 cooperating with a part integral with the male element or threaded rod 31, with the connecting member: the orifice made in the annular core part 24, for the passage of said male element 31, has, in the plane of the annular core part 24, a contour circumscribed with respect to that of the male element which is undoubtedly isolated of the annular core part 24; thanks to this arrangement, it is possible, if desired, without any modification of the base or of the end piece, to allow, or not, the addition of an active impedance adapter; the addition of such an adapter will be described below with reference to FIG. 2.

L'assemblage de l'antenne selon la figure 1 se termine par la pose d'un capot 36 métallique qui présente une échancrure 38 pour le passage du câble 27 et dont le maintien est assuré par trois passages de blocage 37 qu'il présente et dans lesquels viennent élastiquement se placer les trois bossages 35 des pattes de la pièce annulaire de masse 22 de l'embout 20 ; ainsi, le capot métallique 36 est relié à la masse et joue le rôle d'un blindage.The assembly of the antenna according to FIG. 1 ends with the fitting of a metal cover 36 which has a notch 38 for the passage of the cable 27 and the maintenance of which is ensured by three blocking passages 37 which it presents and in which the three bosses 35 of the legs of the annular mass piece 22 of the end piece 20 are placed elastically; thus, the metal cover 36 is connected to ground and plays the role of shielding.

En se reportant à la figure 2, on voit un adaptateur actif selon l'invention constitué d'une plaquette 10, en forme de rondelle plate, de circuit imprimé double face ; l'une des faces, la face 11 sur la figure, porte une piste annulaire conductrice 12, dite piste de sortie, et l'autre face, la face 13, porte une piste annulaire conductrice 14, dite piste d'entrée ; le renforcement proprement dit d'un signal est réalisé par des composants électriques et électroniques reliés par un circuit d'adaptation réalisé selon des traces imprimées disposées sur la face 13 d'entrée autour de la piste d'entrée 14 qui constitue la borne d'entrée de ce circuit ; certains desdits composants ont été illustrés sur la figure sous la référence 15 ; un tel circuit nécessitant pour son fonctionnement une alimentation électrique, la borne d'alimentation 16 de ce circuit est reliée par soudage à un conducteur d'alimentation 76; la borne de sortie dudit circuit d'alimentation, située sur la face 13 d'entrée de la plaquette 10, est reliée électriquement à la piste de sortie 12, située sur la face opposée 11, par l'intermédiaire d'un trou métallisé 17 qui traverse la plaquette 10.Referring to Figure 2, there is an active adapter according to the invention consisting of a plate 10, in the form of a flat washer, of double-sided printed circuit; one of the faces, the face 11 in the figure, carries an annular conductive track 12, called the exit track, and the other face, the face 13, carries an annular conductive track 14, called the entry track; the actual reinforcement of a signal is achieved by electrical and electronic components connected by a circuit adaptation carried out according to printed traces arranged on the input face 13 around the input track 14 which constitutes the input terminal of this circuit; some of said components have been illustrated in the figure under the reference 15; such a circuit requiring for its operation an electrical supply, the supply terminal 16 of this circuit is connected by welding to a supply conductor 76; the output terminal of said supply circuit, located on the input face 13 of the wafer 10, is electrically connected to the output track 12, located on the opposite face 11, by means of a metallized hole 17 which crosses the plate 10.

La plaquette 10 est destinée à être enfilée sur la tige filetée 31 de l'embase 30 ; dès lors, la partie isolante du circuit imprimé double face présente une ouverture centrale 19 adaptée ayant un diamètre légèrement supérieur à celui de la tige filetée 31 ; pour des raisons qui apparaitront plus clairement ci-après, la piste de sortie 12 de forme annulaire a son petit diamètre qui est plus grand que celui de l'ouverture centrale 19, tandis que le petit diamètre de la piste d'entrée 14, de forme également annulaire, est au plus égal au diamètre de ladite ouverture centrale 19.The plate 10 is intended to be threaded onto the threaded rod 31 of the base 30; therefore, the insulating part of the double-sided printed circuit has a suitable central opening 19 having a diameter slightly greater than that of the threaded rod 31; for reasons which will appear more clearly below, the exit track 12 of annular shape has its small diameter which is larger than that of the central opening 19, while the small diameter of the entry track 14, also annular in shape, is at most equal to the diameter of said central opening 19.

Un boîtier 50 métallique est associé à la plaquette 10 ; le boîtier 50 est constitué d'une jupe cylindrique 51 dont le diamètre intérieur est légèrement supérieur au diamètre extérieur de la plaquette 10 de manière à recevoir ladite plaquette 10 tandis qu'elle s'étend transversalement par rapport à l'axe longitudinal du boîtier 50 ; la jupe 51 se prolonge à sa partie supérieure, par rapport à la figure 2, selon un épaulement transversal 56 auquel se raccorde une collerette 59 cylindrique de même axe que celui de la jupe 51 et s'étendant, par rapport à l'épaulement 56, du côté opposé à celui d'où s'étend la jupe 51 ; le boîtier 50 est adapté à être monté sur l'embout 20 à la manière du capot 36 décrit à propos de la figure 1 ; à cet effet, la collerette 59 a un diamètre adapté pour ce faire et présente- trois passages de blocage 57 et une échancrure 58, analogues aux passages 37 et à l'échancrure 38 du capot 36.A metal box 50 is associated with the plate 10; the housing 50 consists of a cylindrical skirt 51 whose internal diameter is slightly greater than the external diameter of the plate 10 so as to receive said plate 10 while it extends transversely relative to the longitudinal axis of the housing 50 ; the skirt 51 is extended at its upper part, with respect to FIG. 2, along a transverse shoulder 56 to which a cylindrical collar 59 is connected, having the same axis as that of the skirt 51 and extending, relative to the shoulder 56 , on the side opposite that from which extends the skirt 51; the housing 50 is adapted to be mounted on the end piece 20 in the manner of the cover 36 described with reference to FIG. 1; for this purpose, the flange 59 has a diameter suitable for this purpose and has three blocking passages 57 and a notch 58, similar to the passages 37 and the notch 38 of the cover 36.

Le circuit d'adaptation ayant besoin de recevoir la masse pour son fonctionnement, et le boîtier 10 étant à la masse, l'épaulement 56 du boîtier 10 est mis à profit pour amener la masse au droit du circuit d'adaptation : l'épaulement 56 porte un pion 52 dirigé vers l'intérieur de la jupe 51 et adapté à traverser une échancrure 18 de la plaquette 10 ; lorsque celle-ci est montée dans la jupe 51 jusqu'à toucher la face intérieure de l'épaulement 56, l'extrémité du pion 52 est soudée à la borne de masse du circuit d'adaptation sur la face 13 d'entrée de la plaquette 10.The adaptation circuit needing to receive the mass for its operation, and the housing 10 being grounded, the shoulder 56 of the housing 10 is used to bring the mass to the right of the adaptation circuit: the shoulder 56 carries a pin 52 directed towards the inside of the skirt 51 and adapted to pass through a notch 18 of the plate 10; when the latter is mounted in the skirt 51 until it touches the inner face of the shoulder 56, the end of the pin 52 is welded to the earth terminal of the adaptation circuit on the face 13 of the input of the plate 10.

Le boîtier 50 est adapté à recevoir un protecteur 70 en matière plastique à l'intérieur de la jupe 51 ; le protecteur 70 comprend un dôme annulaire 73 dont la concavité est dirigée vers l'intérieur de la jupe 51 et qui est surmonté en son centre d'une cheminée 74 cylindrique ; à la périphérie externe du dôme 73, au moins une dent annulaire 71 est adaptée à venir coopérer avec au moins une portée transversale 67 ménagée sur la face intérieure de la jupe 51, pour maintien du protecteur 70 dans la jupe 51 ; le protecteur 70 comporte un passe-fil 72 pour le passage du fil d'alimentation 76 ; lorsque la plaquette 10 et le protecteur 70 sont en place dans le boîtier 50, l'extrémité de la cheminée 74 participe au maintien de la plaquette 10, et le dôme 73 définit un espace pour les composants 15 du circuit d'adaptation qu'il protège.The housing 50 is adapted to receive a plastic protector 70 inside the skirt 51; the protector 70 comprises an annular dome 73 whose concavity is directed towards the inside of the skirt 51 and which is surmounted in its center by a cylindrical chimney 74; at the outer periphery of the dome 73, at least one annular tooth 71 is adapted to come to cooperate with at least one transverse surface 67 formed on the inner face of the skirt 51, for holding the protector 70 in the skirt 51; the protector 70 includes a grommet 72 for the passage of the supply wire 76; when the plate 10 and the protector 70 are in place in the housing 50, the end of the chimney 74 participates in the maintenance of the plate 10, and the dome 73 defines a space for the components 15 of the adaptation circuit which it protected.

Pour parfaire le blindage assuré par le boîtier 50, l'extrémité inférieure de la jupe 51 est fermée par un couvercle métallique 53 qui présente un bossage circulaire 54 adapté à être clipsé dans une rainure annulaire 55 que comporte la jupe 51 à sa surface extérieure ; un trou 68 dans le couvercle 53 permet le passage du fil d'alimentation 76.To complete the shielding provided by the housing 50, the lower end of the skirt 51 is closed by a metal cover 53 which has a circular boss 54 adapted to be clipped into an annular groove 55 that the skirt 51 has on its outer surface; a hole 68 in the cover 53 allows the passage of the supply wire 76.

De la description qui précède, il ressort que le boîtier 50, la plaquette 10 et le protecteur 70 constituent, une fois assemblés, un sous-ensemble adaptateur actif aisément manipulable.From the above description, it appears that the housing 50, the wafer 10 and the protector 70 constitute, once assembled, an active adapter subassembly that is easy to handle.

Lorsqu'on désire renforcer le signal d'antenne transmis par la tige filetée 31, il suffit de clipser ce sous-ensemble sur l'embout 20 du câble coaxial, d'enfiler l'ensemble ainsi constitué sur la tige filetée 31 et de mettre en place et serrer l'écrou 32 ; ainsi, le signal d'antenne transmis par la tige filetée 31 passe par l'écrou 32 dont la face d'appui 33 le transmet à la piste d'entrée 14 de la plaquette 10 ; le signal est alors renforcé par le circuit d'adaptation et le signal ainsi traité est transmis, grâce au trou métallisé 17, par la piste de sortie 12 au contact de la pièce annulaire d'âme 24 de l'embout 20 qui le transmet à l'âme 26 du câble coaxial 27.When it is desired to reinforce the antenna signal transmitted by the threaded rod 31, it suffices to clip this sub-assembly on the end piece 20 of the coaxial cable, to thread the assembly thus formed on the threaded rod 31 and to put in place and tighten nut 32; thus, the antenna signal transmitted by the threaded rod 31 passes through the nut 32, the bearing face 33 of which transmits it to the input track 14 of the wafer 10; the signal is then reinforced by the adaptation circuit and the signal thus processed is transmitted, thanks to the metallized hole 17, by the output track 12 in contact of the annular core part 24 of the end piece 20 which transmits it to the core 26 of the coaxial cable 27.

Bien entendu, après montage de l'écrou 32, le couvercle 53 est mis en place sur le boîtier 50.Of course, after mounting the nut 32, the cover 53 is placed on the housing 50.

L'ensemble monté est représenté sur la figure 3.The assembled assembly is shown in FIG. 3.

Comme on le voit, grâce à l'invention, avec une même embase 30 et un même embout 20, il est possible d'avoir une disposition d'ensemble sans adaptation du signal d'antenne et une disposition avec adaptation.As can be seen, thanks to the invention, with the same base 30 and the same end piece 20, it is possible to have an overall arrangement without adaptation of the antenna signal and an arrangement with adaptation.

Sur cette figure 3, on a montré une variante de réalisation de la portée de centrage de la pièce annulaire isolante 23 qui permet de ménager un espace d'isolement entre la pièce annulaire d'âme 24 et l'élément mâle ou tige filetée 31 ; selon cette variante, dans la pièce annulaire isolante 23 de l'embout 20 est introduite une entretoise de centrage, en matière isolante, plaquée contre la face intérieure de la pièce annulaire d'âme 24, comme montré en 28 sur la figure 2.In this FIG. 3, an alternative embodiment of the centering surface of the annular insulating part 23 has been shown, which makes it possible to provide an isolation space between the annular core part 24 and the male element or threaded rod 31; according to this variant, in the annular insulating part 23 of the end piece 20 is introduced a centering spacer, made of insulating material, pressed against the inner face of the annular core part 24, as shown at 28 in FIG. 2.

Selon une autre variante, ce même but est atteint en faisant venir d'une seule pièce une telle entretoise avec le reste de la pièce annulaire isolante ; il suffit alors, pour la réalisation de l'embout, de remplacer la pièce annulaire isolante 23 par une pièce annulaire isolante 123, montrée sur les figures 4 et 5, toutes autres choses étant égales par ailleurs ; la pièce 123 comporte une entretoise 69 venue de moulage avec le reste de la pièce et dont le passage central 66 a un diamètre inférieur à celui du trou central 29 de la pièce annulaire d'âme 24.According to another variant, this same object is achieved by bringing such a spacer in one piece with the rest of the annular insulating part; it then suffices, for the production of the end piece, to replace the insulating annular part 23 with an insulating annular part 123, shown in FIGS. 4 and 5, all other things being equal; the part 123 comprises a spacer 69 molded with the rest of the part and whose central passage 66 has a diameter less than that of the central hole 29 of the annular core part 24.

Les figures 6 et 7 concernent un autre type d'embase d'antenne pouvant recevoir, si on le désire, également un adaptateur actif d'impédance.Figures 6 and 7 relate to another type of antenna base that can receive, if desired, also an active impedance adapter.

L'embase 130 de la figure 6 convient plus particulièrement à une antenne de toît de véhicule placée à l'arrière de celui-ci.The base 130 of Figure 6 is more particularly suitable for a vehicle roof antenna placed at the rear thereof.

L'embase 130 est constituée d'une pièce creuse 134 moulée en matière plastique définie par une paroi de forme générale tronconique ayant à sa partie inférieure une lèvre d'étanchéité 146 pour son appui sur l'élément de carrosserie 140 ; un pion métallique 135 fileté intérieurement est destiné à recevoir le brin d'antenne ; le pion métallique 135 se prolonge selon une queue 136 cylindrique, dont l'axe est incliné par rapport à l'axe du pion 135, creusée intérieurement d'un taraudage 155 ; le pion 135 et la queue 136, d'une seule pièce, sont surmoulés, à l'intérieur de la pièce creuse 134, par une matière plastique 137 de dureté relativement faible, compressible, et l'extrémité de la queue 136 qui déborde de la pièce creuse 134 est surmoulée d'un isolant 142 de dureté relativement faible également ; la section transversale de l'isolant 142 est de forme générale rectangulaire, hormis un appendice de positionnement 144 en excroissance ; lorsque l'embase 130 est placée sur l'élément de carrosserie 140, l'extrémité de l'isolant 142 traverse une ouverture 141, de cet élément, de forme correspondante, l'appendice 144 venant se loger dans un cran de positionnement 143 ménagé dans l'élément de carrosserie 140 en bordure de l'ouverture 141.The base 130 consists of a hollow piece 134 molded in plastic material defined by a wall of generally frustoconical shape having at its lower part a sealing lip 146 for its support on the bodywork element 140; an internally threaded metal pin 135 is intended to receive the antenna strand; the metal pin 135 extends along a cylindrical tail 136, the axis of which is inclined relative to the axis of the pin 135, internally hollowed out by a thread 155; the pin 135 and the tail 136, in one piece, are molded, inside the hollow piece 134, by a plastic material 137 of relatively low hardness, compressible, and the end of the tail 136 which projects beyond the hollow part 134 is overmolded with an insulator 142 of relatively low hardness also; the cross section of the insulator 142 is of generally rectangular shape, except for a protruding positioning appendage 144; when the base 130 is placed on the body element 140, the end of the insulator 142 passes through an opening 141, of this element, of corresponding shape, the appendix 144 being received in a positioning notch 143 formed in the bodywork element 140 at the edge of the opening 141.

L'embase 130 qui vient d'être décrite est adaptée à coopérer avec un embout 120 de câble coaxial.The base 130 which has just been described is adapted to cooperate with a tip 120 of coaxial cable.

L'embout 120 est du genre de l'embout 20 décrit précédemment et réalisé par l'assemblage de pièces annulaires 221, 222, 223, 224 analogues aux pièces 21, 22, 123, 24, respectivement, décrites précédemment ; la différence entre l'embout 120 et l'embout 20 est que les pièces annulaires 221, 222, 223 sont de sections rectangulaires au lieu de circulaires ; en outre, la pièce annulaire isolante 223 porte, d'une seule pièce avec elle, quatre colonnettes 139 adaptées à prendre place dans quatre cheminées 138 prévues dans l'embase 130.The tip 120 is of the type of the tip 20 described above and produced by the assembly of annular parts 221, 222, 223, 224 similar to parts 21, 22, 123, 24, respectively, described above; the difference between the end piece 120 and the end piece 20 is that the annular parts 221, 222, 223 are of rectangular sections instead of circular ones; in addition, the insulating annular piece 223 carries, in one piece with it, four balusters 139 adapted to take place in four chimneys 138 provided in the base 130.

Comme dans la version précédente, sont associables à l'embout 120, un boîtier 150, une plaquette 100, un protecteur 170, un couvercle 153, similaires, respectivement, au boîtier 50, à la plaquette 10, au protecteur 70, au couvercle 53, hormis leur contour extérieur qui est rectangulaire au lieu d'être circulaire.As in the previous version, can be associated with the tip 120, a housing 150, a plate 100, a protector 170, a cover 153, similar, respectively, to the housing 50, to the plate 10, to the protector 70, to the cover 53 , except for their outer outline which is rectangular instead of circular.

Selon cette variante, une tige filetée 131, qui joue le rôle de la tige filetée 31 précédente, n'est pas portée par l'embase 130 mais est la tige filetée 131 d'une vis 151 ayant une tête 132 munie d'une face d'appui transversale 133 pour coopération avec la face d'entrée de la plaquette 100, la vis 151 étant adaptée à être vissée dans le taraudage 155 de l'embase 130.According to this variant, a threaded rod 131, which plays the role of the preceding threaded rod 31, is not carried by the base 130 but is the threaded rod 131 of a screw 151 having a head 132 provided with a face transverse support 133 for cooperation with the entry face of the plate 100, the screw 151 being adapted to be screwed into the internal thread 155 of the base 130.

La pièce annulaire isolante 223 diffère également de la pièce annulaire 123 en ce que la portée de centrage est réalisée par un prolongement annulaire axial 169 sur lequel est centrée la pièce annulaire d'âme 224, la face externe du prolongement 169 affleurant la face externe de la pièce annulaire d'âme 224 ; ainsi, c'est l'épaisseur radiale du prolongement 169 qui définit physiquement l'espace d'isolement entre la tige filetée 131 et la pièce annulaire d'âme 224.The insulating annular part 223 also differs from the annular part 123 in that the centering surface is produced by an axial annular extension 169 on which the annular core part 224 is centered, the external face of the extension 169 being flush with the external face of the annular core piece 224; thus, it is the radial thickness of the extension 169 which physically defines the isolation space between the threaded rod 131 and the annular core part 224.

Grâce à la disposition selon cette variante, l'ensemble, lorsqu'il est assemblé et monté, est peu incombrant axialement sous l'élément de carrosserie 140, ce qui convient bien à l'arrière d'un véhicule où la place disponible à l'intérieur du véhicule entre le toit du véhicule et l'habillage de l'habitacle est plus réduit qu'à l'avant ; pour cette raison également, le fil d'alimentation 76 est monté transversalement par rapport à la plaquette 100, comme illustré en traits mixtes sur la figure 6.Thanks to the arrangement according to this variant, the assembly, when assembled and mounted, takes up little space axially under the bodywork element 140, which is well suited to the rear of a vehicle where the space available for the vehicle interior between the vehicle roof and the interior trim is more reduced than at the front; for this reason also, the supply wire 76 is mounted transversely with respect to the wafer 100, as illustrated in phantom in FIG. 6.

Pour faciliter le montage de cette variante par une seule et même personne, des picots de clipsage 145 sont prévus en bordure de l'isolant 142 de l'embase 130 pour clipsage momentané de celle-ci sur les bords de l'ouverture 141 de l'élément de carrosserie 140 ; depuis l'intérieur du véhicule, il est possible alors de monter le sous-ensemble constitué par l'embout 120, le boîtier 150, la plaquette 100 et le protecteur 170 sur l'embase en introduisant les colonnettes 139 dans les cheminées 138 de l'embase 130 ; des nervures longitudinales 147 sont prévues à l'intérieur des cheminées 138, au droit de l'isolant 142, les colonnettes 139 étant ainsi momentanément maintenues par serrage élastique de la matière, et il est possible de lâcher le sous-ensemble, de présenter et de visser la vis 151 ; l'introduction des colonnettes 139 dans les cheminées 138 fait gonfler, du fait des nervures 147, la matière de l'isolant 142, ce qui vient conforter l'effet de maintien des picots de clipsage 145 sur l'élément de carrosserie 140.To facilitate the mounting of this variant by one and the same person, clipping pins 145 are provided at the edge of the insulation 142 of the base 130 for temporary clipping thereof on the edges of the opening 141 of the 'body element 140; from inside the vehicle, it is then possible to mount the sub-assembly constituted by the end piece 120, the housing 150, the plate 100 and the protector 170 on the base by introducing the balusters 139 in the chimneys 138 of the 'base 130; longitudinal ribs 147 are provided inside the chimneys 138, in line with the insulation 142, the balusters 139 being thus momentarily held by elastic clamping of the material, and it is possible to let go of the sub-assembly, to present and to screw the screw 151; the introduction of the balusters 139 in the chimneys 138 causes the material of the insulator 142 to swell, due to the ribs 147, which reinforces the effect of holding the clipping pins 145 on the bodywork element 140.

Au lieu de nervures longitudinales 147, il est possible de prévoir des bourrelets placés au droit des picots 145 ; de tels bourrelets sont montrés en 247 sur les figures 8 et 9 ; chaque bourrelet 247 est au droit d'un picot 145 ; les bourrelets 247 jouent le même rôle, décrit ci-dessus, que celui des colonnettes 139 ; les cheminées 138 peuvent également avoir une forme légèrement conique, comme visible sur la figure 8.Instead of longitudinal ribs 147, it is possible to provide beads placed in line with the pins 145; such beads are shown at 247 in Figures 8 and 9; each bead 247 is in line with a pin 145; the beads 247 play the same role, described above, as that of the columns 139; chimneys 138 can also have a slightly conical shape, as shown in Figure 8.

Claims (17)

Antenne pour véhicule automobile comportant une embase (30, 130) d'antenne destinée à être fixée sur un élément de carrosserie (40, 140), ladite embase recevant, d'une part, un brin d'antenne et, d'autre part, un embout (20, 120) de câble coaxial (27) relié à un récepteur radio, ledit embout (20, 120) étant constitué d'un empilage de pièces annulaires comportant, autour d'un même passage central : - au moins un élément annulaire de masse (21, 22 ; 221, 222), - une pièce annulaire isolante (23, 123, 223), et - une pièce annulaire d'âme (24, 224), l'élément annulaire de masse (21, 22 ; 221, 222) étant en contact avec l'élément de carrosserie (40, 140) et étant relié à la tresse de masse (25) que comporte le câble coaxial (27), la pièce annulaire d'âme (24, 224) étant reliée à l'âme (26) dudit câble coaxial (27), le signal fourni par le brin d'antenne étant reçu par un organe de liaison fileté, qui comporte un élément mâle (31, 131) et un élément femelle (32, 133) et qui assure le maintien mécanique de l'embase (30, 130) et de l'embout (20, 120) par rapport à l'élément de carrosserie (40, 140), ledit élément mâle (31, 131) dudit organe de liaison fileté traversant une ouverture (41, 141) de l'élément (40, 140) de carrosserie et traversant l'embout (20, 120) par son passage central, un moyen de contact (32, 132) étant solidaire de l'un des éléments de l'organe de liaison fileté pour conduire le signal fourni par le brin d'antenne en direction de la pièce annulaire d'âme (24, 224), caractérisé par le fait que la pièce annulaire isolante (23, 123, 223) de l'embout comporte, autour du passage central dudit embout (20, 120), une portée de centrage (44, 66) coopérant avec l'élément mâle (31, 131) ou un élément qui en est solidaire, l'orifice pratiqué dans la pièce annulaire d'âme (24, 224) pour le passage dudit élément mâle (31, 131) ayant, dans le plan de ladite pièce annulaire d'âme (24, 224), un contour circonscrit par rapport à celui de l'élément mâle, de façon à ménager un espace d'isolement entre les deux contours.An antenna for a motor vehicle comprising an antenna base (30, 130) intended to be fixed to a body element (40, 140), said base receiving, on the one hand, an antenna strand and, on the other hand , a tip (20, 120) of coaxial cable (27) connected to a radio receiver, said tip (20, 120) consisting of a stack of annular parts comprising, around a same central passage: - at least one annular mass element (21, 22; 221, 222), - an insulating annular piece (23, 123, 223), and - an annular core piece (24, 224), the annular mass element (21, 22; 221, 222) being in contact with the body element (40, 140) and being connected to the mass braid (25) which comprises the coaxial cable (27), the annular core part (24, 224) being connected to the core (26) of said coaxial cable (27) , the signal supplied by the antenna strand being received by a threaded connecting member, which comprises a male element ( 31, 131) and a female element (32, 133) and which provides mechanical support for the base (30, 130) and the end piece (20, 120) relative to the body element (40, 140 ), said male element (31, 131) of said threaded connecting member passing through an opening (41, 141) of the body element (40, 140) and passing through the end piece (20, 120) through its central passage, a contact means (32, 132) being integral with one of the elements of the threaded connecting member for conducting the signal supplied by the antenna strand towards the annular core part (24, 224), characterized ized by the fact that the insulating annular part (23, 123, 223) of the end piece comprises, around the central passage of said end piece (20, 120), a centering surface (44, 66) cooperating with the male element ( 31, 131) or an element which is integral therewith, the orifice made in the annular piece of core (24, 224) for the passage of said male element (31, 131) having, in the plane of said annular piece of core (24, 224), a contour circumscribed relative to that of the male element, so as to provide an isolation space between the two contours. Antenne selon la revendication 1, caractérisée par le fait que l'élément solidaire de l'élément mâle est un anneau isolant (42) portée par l'embase (30), et la portée de centrage de la pièce annulaire isolante (23) est une creusure cylindrique (44) ménagée dans la pièce annulaire isolante (23).Antenna according to claim 1, characterized in that the element integral with the male element is an insulating ring (42) carried by the base (30), and the centering surface of the annular part insulating (23) is a cylindrical recess (44) formed in the insulating annular part (23). Antenne selon la revendication 1, caractérisée par le fait que la portée de centrage de la pièce annulaire isolante (23, 123, 223) est une entretoise annulaire (28, 69) qui est plaquée contre la face intérieure de la pièce annulaire d'âme (24, 224) et qui coopère avec l'élément mâle (31, 131).Antenna according to claim 1, characterized in that the centering surface of the insulating annular piece (23, 123, 223) is an annular spacer (28, 69) which is pressed against the inner face of the annular core piece (24, 224) and which cooperates with the male element (31, 131). Antenne selon la revendication 3, caractérisée par le fait que l'entretoise annulaire (69) est venue de moulage avec la pièce annulaire isolante (123, 223).Antenna according to claim 3, characterized in that the annular spacer (69) is molded with the insulating annular part (123, 223). Antenne selon la revendication 4, caractérisée par le fait que l'entretoise annulaire présente un prolongement annulaire axial (169) sur lequel est centrée la pièce annulaire d'âme (224).Antenna according to claim 4, characterized in that the annular spacer has an axial annular extension (169) on which the annular core part (224) is centered. Antenne selon l'une des revendications 1 à 5, caractérisée par le fait que l'élément annulaire de masse est constitué d'une pièce annulaire de prise de masse (21, 221) et d'une pièce annulaire de masse (22, 222).Antenna according to one of claims 1 to 5, characterized in that the annular mass element consists of an annular grounding piece (21, 221) and an annular mass piece (22, 222 ). Antenne selon l'une des revendications 1 à 6, caractérisée par le fait que l'élément mâle de l'organe de liaison est une tige filetée (31) solidaire de l'embase (40), et l'élément femelle est un écrou (32) portant le moyen de contact (33) et vissé sur la tige (31).Antenna according to one of claims 1 to 6, characterized in that the male element of the connecting member is a threaded rod (31) integral with the base (40), and the female element is a nut (32) carrying the contact means (33) and screwed onto the rod (31). Antenne selon l'une des revendications 1 à 6, caractérisée par le fait que l'élément mâle de l'organe de liaison est la tige filetée (131) d'une vis à tête (151) et l'élément femelle est un taraudage (133) que comporte l'embase (130), le moyen de contact étant constitué par la tête (132) de la vis (151).Antenna according to one of claims 1 to 6, characterized in that the male element of the connecting member is the threaded rod (131) of a head screw (151) and the female element is a thread (133) that comprises the base (130), the contact means being constituted by the head (132) of the screw (151). Antenne selon l'une des revendications 1 à 8, caractérisée par le fait que le moyen de contact (32, 132) s'appuie directement sur la pièce annulaire d'âme (24, 224).Antenna according to one of claims 1 to 8, characterized in that the contact means (32, 132) rests directly on the annular core part (24, 224). Antenne selon l'une des revendications 1 à 8, caractérisée par le fait qu'entre le moyen de contact (32, 132) et la pièce annulaire d'âme (24, 224) est inséré un adaptateur actif d'impédance d'antenne (10, 100) constitué d'une plaquette en forme de rondelle plate, l'une des faces (11) de la plaquette portant une piste annulaire conductrice de sortie (12) venant en appui contre la pièce annulaire d'âme et l'autre face (13) portant une piste annulaire conductrice d'entrée sur laquelle vient en appui le moyen de contact (32, 132), la face de la plaquette qui porte la piste d'entrée portant également les moyens électriques d'adaptation d'un circuit d'adaptation alimenté électriquement par une borne d'alimentation portée par ladite plaquette, la piste de sortie (12) étant reliée à la borne de sortie du circuit d'adaptation par l'intermédiaire d'un trou métallisé (17) traversant la plaquette (10), une borne de masse dudit circuit d'adaptation étant électriquement reliée à l'élément annulaire de masse de l'embout.Antenna according to one of claims 1 to 8, characterized in that between the contact means (32, 132) and the annular core part (24, 224) is inserted an active antenna impedance adapter (10, 100) consisting of a plate in the form of a flat washer, one of the faces (11) of the plate carrying an annular conductive outlet track (12) bearing against the annular core part and the other face (13) carrying an annular track input conductor on which the contact means (32, 132) bear, the face of the plate which carries the input track also carrying the electrical means for adapting an adapter circuit supplied electrically by a supply terminal carried by said plate, the output track (12) being connected to the output terminal of the adaptation circuit via a metallized hole (17) passing through the plate (10), a terminal mass of said adapter circuit being electrically connected to the annular mass element of the end piece. Antenne selon l'une des revendications 1 à 10, caractérisée par le fait que l'adaptateur actif (10, 100) est placé dans un boîtier (50, 150) constitué d'une jupe (51) cylindrique maintenue par clipsage par l'élément annulaire de masse de l'embout (20, 120).Antenna according to one of claims 1 to 10, characterized in that the active adapter (10, 100) is placed in a housing (50, 150) consisting of a cylindrical skirt (51) held by clipping by the annular mass element of the end piece (20, 120). Antenne selon la revendication 11, caractérisée par le fait que la borne de masse de l'adaptateur actif (10, 100) est reliée à la masse par un pion (52, 152) solidaire du boîtier (50, 150).Antenna according to claim 11, characterized in that the earth terminal of the active adapter (10, 100) is connected to earth by a pin (52, 152) secured to the housing (50, 150). Antenne selon l'une des revendications 11 ou 12, caractérisée par le fait que le boîtier (50, 150) est fermé par un couvercle (53, 153).Antenna according to one of claims 11 or 12, characterized in that the housing (50, 150) is closed by a cover (53, 153). Antenne selon l'une des revendications 1 à 13, caractérisée par le fait que l'embase (130) porte des picots de clipsage (145) pour clipsage de l'embase (130) sur les bords d'une ouverture (141) de l'élément de carrosserie (140).Antenna according to one of claims 1 to 13, characterized in that the base (130) carries clipping pins (145) for clipping the base (130) to the edges of an opening (141) of the bodywork element (140). Antenne selon la revendication 14, caractérisée par le fait que la pièce annulaire isolante (223) porte au moins une colonnette (139).Antenna according to claim 14, characterized in that the annular insulating part (223) carries at least one baluster (139). Antenne selon la revendication 15, caractérisée par le fait que la colonnette (139) est adaptée à être reçue dans une cheminée (138) prévue dans l'embase (130), la cheminée (138) comportant des nervures (147) ou bourrelets (247) pour augmenter l'effet de maintien des picots de clipsage (145) sur l'élément de carrosserie (140).Antenna according to claim 15, characterized in that the baluster (139) is adapted to be received in a chimney (138) provided in the base (130), the chimney (138) comprising ribs (147) or beads ( 247) to increase the effect of holding the clipping pins (145) on the bodywork element (140). Ensemble constitué d'un adaptateur actif, d'un boîtier, d'un protecteur et d'un couvercle, caractérisé par le fait que l'adaptateur actif (10, 100), le boîtier (50, 150), le protecteur (70, 170) et le couvercle (53, 153) sont tels qu'utilisés dans l'antenne selon les revendications 1 à 16.Assembly consisting of an active adapter, a housing, a protector and a cover, characterized in that the active adapter (10, 100), the housing (50, 150), the protector (70 , 170) and the cover (53, 153) are as used in the antenna according to claims 1 to 16.
EP19950402681 1994-12-30 1995-11-29 Antenna for an automobile and an active impedance adaptor for such an antenna Expired - Lifetime EP0720250B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9415928 1994-12-30
FR9415928A FR2729010B1 (en) 1994-12-30 1994-12-30 ANTENNA FOR A MOTOR VEHICLE CAPABLE OF RECEIVING AN ACTIVE IMPEDANCE ADAPTER AND ASSEMBLY ACTIVE IMPEDANCE ADAPTER FOR SUCH ANTENNA

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EP0720250A1 true EP0720250A1 (en) 1996-07-03
EP0720250B1 EP0720250B1 (en) 2000-03-01

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DE (1) DE69515281T2 (en)
ES (1) ES2143024T3 (en)
FR (1) FR2729010B1 (en)

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EP1648049A1 (en) * 2004-10-12 2006-04-19 Harada Industry Co., Ltd. Antenna mounting device
CN105990771A (en) * 2015-02-02 2016-10-05 德尔福中央电气（上海）有限公司 Bolt connecter locking device

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FR2677177A3 (en) * 1991-04-29 1992-12-04 Zendar Spa Contact and rapid fixing device for use with car radio aerials

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GB2351395A (en) * 1999-06-16 2000-12-27 Zendar Spa Car aerial connector with shielding cap and fixing screw retention means
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EP1648049A1 (en) * 2004-10-12 2006-04-19 Harada Industry Co., Ltd. Antenna mounting device
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KR100756146B1 (en) 2004-10-12 2007-09-05 하라다 고교 가부시키가이샤 Antenna device
CN105990771A (en) * 2015-02-02 2016-10-05 德尔福中央电气（上海）有限公司 Bolt connecter locking device
CN105990771B (en) * 2015-02-02 2023-12-08 安波福中央电气（上海）有限公司 Locking device of bolt connector

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ES2143024T3 (en) 2000-05-01
FR2729010B1 (en) 1997-04-11
DE69515281T2 (en) 2000-11-30
DE69515281D1 (en) 2000-04-06
EP0720250B1 (en) 2000-03-01
FR2729010A1 (en) 1996-07-05

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