EP2984706B1 - Attachment for a motor vehicle and associated motor vehicle - Google Patents

Attachment for a motor vehicle and associated motor vehicle Download PDF

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Publication number
EP2984706B1
EP2984706B1 EP14714179.0A EP14714179A EP2984706B1 EP 2984706 B1 EP2984706 B1 EP 2984706B1 EP 14714179 A EP14714179 A EP 14714179A EP 2984706 B1 EP2984706 B1 EP 2984706B1
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EP
European Patent Office
Prior art keywords
attachment
antenna
motor vehicle
mirror base
injection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP14714179.0A
Other languages
German (de)
French (fr)
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EP2984706A1 (en
Inventor
Christoph Ullrich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Audi AG
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Audi AG
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Filing date
Publication date
Application filed by Audi AG filed Critical Audi AG
Publication of EP2984706A1 publication Critical patent/EP2984706A1/en
Application granted granted Critical
Publication of EP2984706B1 publication Critical patent/EP2984706B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/32—Adaptation for use in or on road or rail vehicles
    • H01Q1/325—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle
    • H01Q1/3266—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle using the mirror of the vehicle
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/32—Adaptation for use in or on road or rail vehicles
    • H01Q1/325—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/32—Adaptation for use in or on road or rail vehicles
    • H01Q1/325—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle
    • H01Q1/3275—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle mounted on a horizontal surface of the vehicle, e.g. on roof, hood, trunk
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/40—Radiating elements coated with or embedded in protective material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/0006—Particular feeding systems

Definitions

  • the invention relates to an attachment for a motor vehicle, with at least one track having an antenna for transmitting and / or receiving radio signals.
  • Car-to-car communication is based on the fact that vehicles transmit information by radio to nearby vehicles and receive information transmitted by other vehicles, creating a wireless network that, for example, can spread alerts in the shortest possible time.
  • a roof antenna for a motor vehicle is from the DE 10 2005 054 286 A1 known.
  • the cladding of the roof antenna is coated with an electrically conductive material which serves as a functional antenna element.
  • the electronic components of the antenna are arranged inside the panel.
  • the invention has for its object to provide an attachment for a motor vehicle with an antenna function that ensures a good reception and transmission power to the front and back and has only a small space requirement.
  • an attachment according to claim 1 is provided.
  • the invention is based on the idea that a vehicle antenna with low space requirement can be obtained by the attachment itself has the trace of the antenna. In this way, antenna components can be integrated into an already existing attachment, so that no additional space requirement for antenna components arises. Accordingly If necessary, an additional vehicle antenna can be comparatively easily integrated into an attachment.
  • the attachment to the track of the antenna which is formed as injection-molded circuit carrier.
  • molded interconnect devices molded interconnected devices
  • metallic tracks which are applied to an injection-molded plastic part, which serves as a carrier.
  • the attachment can fulfill both a primary function of serving as a cladding or covering and a secondary function of serving as a carrier for one or more tracks. In this way, a multifunctional component, which has advantages in terms of the required installation space in comparison with a conventional arrangement, in which a separate antenna is arranged in the interior of an attachment.
  • the track of the attachment is electrically connected to a coaxial cable, which is at least partially part of the injection-molded circuit substrate. If the track of the attachment is electrically connected to a coaxial cable, no additional space for contacting the coaxial cable is needed.
  • the attachment according to the invention is designed as a mirror base of an interior rearview mirror. If the antenna having attachment is designed as a mirror base of an interior rearview mirror, there is a very good transmission and reception power forward, in the direction of travel. Since the conductor is formed as injection-molded circuit carrier, an enlargement of the mirror base is not required.
  • the attachment can also be formed as part of the front panel of the motor vehicle be.
  • the conductor track of an antenna can be arranged in the front region in a trim part made of plastic.
  • the attachment has a plurality of antennas and / or a plurality of interconnects.
  • Several antennas may be provided to optimize reception from different directions, besides several antennas for different frequencies may be provided.
  • a particularly good integration of the track having the antenna in the attachment results when a track of an antenna has a three-dimensional, adapted to the shape of the attachment shape.
  • the shape of the conductor track is thus adapted to the shape or outer contour of the attachment, in particular to the shape of the mirror base of an interior rearview mirror.
  • the antenna can then be integrated into the mirror base practically without any additional space requirement. Since no additional antenna components are required, the provision of a further antenna only causes comparatively low costs.
  • the invention relates to a motor vehicle, with at least one attachment and at least one track having an antenna for transmitting and / or receiving radio signals.
  • the motor vehicle according to the invention is characterized in that the attachment and the at least one track of the antenna is formed as an injection-molded circuit carrier.
  • Fig. 1 is a side view of a motor vehicle 1 having a roof antenna 2.
  • the roof antenna 2 a plurality of antennas are integrated, wherein one antenna allows a connection to a mobile network and another antenna is provided for a car-to-car communication.
  • the outgoing of the roof antenna 2 arrows 3 indicate in which direction a transmission or emission of electromagnetic waves is possible. It can be seen that there is good radiation to the rear and to the top, but not to the front. However, for certain car-to-car applications, front-facing transceiver is particularly important, for example, to receive and send wirelessly transmitted information from oncoming vehicles.
  • the motor vehicle 1 according to the invention therefore additionally has a further antenna 4, which is integrated in a mirror base 5 of an interior rearview mirror 6.
  • the antenna 4 is arranged so that the radiation and the reception of waves to or from the front is possible.
  • Fig. 2 shows the area of the antenna 4 on an enlarged scale.
  • the mirror base 5 is an attachment which is arranged at the upper end of a windshield 7 in the vehicle interior 8.
  • On the mirror base 5 of the interior rearview mirror 6 is attached.
  • further components are arranged, for example a camera, rain sensors and possibly a power supply for the interior rearview mirror 6.
  • Trained as a mirror base 5 attachment has as part of the antenna 4 at least one conductor track, which in Fig. 2 is shown schematically and has a meandering shape.
  • the shape and length of the trace is fixed and optimized with respect to the radio frequency (s).
  • the antenna 4 with the conductor track is integrated into the attachment designed as a mirror base 5, which is designed as an injection-molded circuit carrier.
  • a base body which determines the outer contour, is formed, wherein a certain plastic is used.
  • Another, second plastic is metallizable and forms the layout of the trace.
  • the conductor track geometry can be formed sublime, then areas between the tracks are filled with a non-metallizable plastic.
  • the conductor track structure in a first shot of the injection molding process, is injected as a recess made of a non-metallizable plastic.
  • the recessed areas are filled with a metallizable component.
  • the metallizable plastic can be applied galvanically copper or other conductive material.
  • Fig. 3 is a perspective view of the mirror base 5.
  • the mirror base 5 has an approximately prismatic, hollow basic shape.
  • the antenna 4 comprises a first conductor 9 and a second conductor 10, each having a meandering shape and which are part of the mirror base 5.
  • the molded as an injection molded lead carrier (molded interconnected device) formed mirror base 5 thus has surfaces 11, 12, which have the tracks 9, 10 of the antenna 4.
  • the shape and arrangement of the tracks 9, 10 is chosen so that the antenna performance is optimal.
  • the contacting of the conductor tracks 9, 10 via a coaxial cable 13, which is supplied to a arranged at a different position in the motor vehicle 1 control unit. It Variants are also possible in which a part of the coaxial cable 13 is integrated into the mirror base 5, so that the mirror base 5 has a contact element, for example a plug or the like.
  • a sensor 14 or a camera as in Fig. 3 is shown schematically.

Description

Die Erfindung betrifft ein Anbauteil für ein Kraftfahrzeug, mit wenigstens einer eine Leiterbahn aufweisenden Antenne zum Senden und/oder Empfangen von Funksignalen.The invention relates to an attachment for a motor vehicle, with at least one track having an antenna for transmitting and / or receiving radio signals.

Kraftfahrzeuge sind heutzutage zumeist bereits mit mehreren Antennen ausgerüstet, die mit unterschiedlichen Kommunikationsgeräten verbunden sind. Für den Radioempfang wird wenigstens eine Antenne benötigt, häufig sind Fahrzeuge sogar mit mehreren Antennen ausgerüstet. Für die Nutzung eines Mobiltelefons wird eine weitere Antenne benötigt. Darüber hinaus befinden sich unterschiedliche Systeme in der Entwicklung, die eine Car-to-Car-Kommunikation ermöglichen. Es ist vorgesehen, die dafür notwendige zusätzliche Antenne in eine Dachantenne zu integrieren. Die Car-to-Car-Kommunikation beruht darauf, dass Fahrzeuge per Funk Informationen an sich in der Nähe befindende Fahrzeuge aussenden und von anderen Fahrzeugen ausgesendete Informationen empfangen, wodurch ein Funknetzwerk entsteht, über das zum Beispiel Warnmeldungen in kürzester Zeit verbreitet werden können.Motor vehicles are nowadays usually already equipped with multiple antennas, which are connected to different communication devices. For radio reception at least one antenna is required, often vehicles are even equipped with multiple antennas. To use a mobile phone another antenna is needed. In addition, different systems are under development that enable car-to-car communication. It is intended to integrate the necessary additional antenna in a roof antenna. Car-to-car communication is based on the fact that vehicles transmit information by radio to nearby vehicles and receive information transmitted by other vehicles, creating a wireless network that, for example, can spread alerts in the shortest possible time.

Bei Fahrzeugen, die eine Dachantenne aufweisen, ist bei nach hinten abfallendem Fahrzeugdach jedoch keine direkte Sichtverbindung von der Antenne nach vorne möglich. Da die Wellenausbreitung bei den genutzten Frequenzen überwiegend entlang der Sichtlinie erfolgt, ist eine gute Kommunikation nur nach hinten, zur Seite oder nach oben möglich. Die nach vorne abgestrahlte Leistung wird durch ein vor der Dachantenne angeordnetes Glasdach weiter vermindert. Da die Wellenausbreitung einer Dachantenne nach vorne unzureichend ist, ist bereits vorgeschlagen worden, eine zweite Car-to-Car-Antenne im Fahrzeug zu integrieren, die eine direkte Sichtverbindung nach vorne besitzt.In vehicles having a roof antenna, however, with a rearwardly sloping vehicle roof, no direct line of sight from the antenna forward is possible. Since the wave propagation at the frequencies used is predominantly along the line of sight, good communication is only possible to the rear, to the side or to the top. The radiated forward power is further reduced by a arranged in front of the roof antenna glass roof. Since the wave propagation of a roof antenna forward is insufficient, it has already been proposed to integrate a second car-to-car antenna in the vehicle, which has a direct line of sight to the front.

In der DE 10 2008 005 908 A1 wird ein Anbauteil für ein Fahrzeug vorgeschlagen, das wenigstens eine eine Leiterbahn aufweisende Antenne aufweist.In the DE 10 2008 005 908 A1 an attachment for a vehicle is proposed which has at least one track having an antenna.

In der DE 10 2010 064 086 A1 ist der Vorschlag gemacht worden, zwei Antennen in Fahrzeugbauteile zu integrieren, wobei die Antennen an entsprechenden Positionen links und rechts am Fahrzeug angeordnet sind.In the DE 10 2010 064 086 A1 the proposal has been made to integrate two antennas in vehicle components, wherein the antennas are arranged at corresponding positions left and right of the vehicle.

In der DE 28 39 849 A1 ist bereits vorgeschlagen worden, einen Freiraum innerhalb einer Spiegelverkleidung zu nutzen, um dort eine Empfangsantenne unterzubringen. Da die Verkleidung neben dem Spiegel auch die Antenne umschließen muss, wird eine entsprechend größere Verkleidung benötigt.In the DE 28 39 849 A1 It has already been proposed to use a free space within a mirror panel to accommodate a receiving antenna. Since the panel next to the mirror must also enclose the antenna, a correspondingly larger panel is needed.

Eine Dachantenne für ein Kraftfahrzeug ist aus der DE 10 2005 054 286 A1 bekannt. Die Verkleidung der Dachantenne ist mit einem elektrisch leitenden Material beschichtet, das als funktionales Antennenelement dient. Daneben sind die elektronischen Bauteile der Antenne innerhalb der Verkleidung angeordnet.A roof antenna for a motor vehicle is from the DE 10 2005 054 286 A1 known. The cladding of the roof antenna is coated with an electrically conductive material which serves as a functional antenna element. In addition, the electronic components of the antenna are arranged inside the panel.

Der Erfindung liegt die Aufgabe zugrunde, ein Anbauteil für ein Kraftfahrzeug mit einer Antennenfunktion anzugeben, das eine gute Empfangs- und Sendeleistung nach vorne und hinten gewährleistet und das lediglich einen geringen Bauraumbedarf hat.The invention has for its object to provide an attachment for a motor vehicle with an antenna function that ensures a good reception and transmission power to the front and back and has only a small space requirement.

Zur Lösung dieser Aufgabe ist ein Anbauteil gemäß Anspruch 1 vorgesehen. Der Erfindung liegt die Idee zugrunde, dass eine Fahrzeugantenne mit geringem Bauraumbedarf erhalten werden kann, indem das Anbauteil selbst die Leiterbahn der Antenne aufweist. Auf diese Weise können Antennenkomponenten in ein ohnehin vorhandenes Anbauteil integriert werden, so dass kein zusätzlicher Bauraumbedarf für Antennenkomponenten entsteht. Dementsprechend kann eine gegebenenfalls zusätzliche Fahrzeugantenne vergleichsweise einfach in ein Anbauteil integriert werden.To solve this problem, an attachment according to claim 1 is provided. The invention is based on the idea that a vehicle antenna with low space requirement can be obtained by the attachment itself has the trace of the antenna. In this way, antenna components can be integrated into an already existing attachment, so that no additional space requirement for antenna components arises. Accordingly If necessary, an additional vehicle antenna can be comparatively easily integrated into an attachment.

Erfindungsgemäß weist das Anbauteil die Leiterbahn der Antenne auf, das als spritzgegossener Schaltungsträger ausgebildet ist. Als spritzgegossene Schaltungsträger (molded interconnected devices) werden im allgemeinen elektrische oder elektronische Bauteile bezeichnet, die metallische Leiterbahnen aufweisen, die auf ein spritzgegossenes Kunststoffteil, das als Träger dient, aufgebracht sind. Indem das Anbauteil als spritzgegossener Schaltungsträger ausgebildet wird, kann es sowohl eine primäre Funktion erfüllen, nämlich als Verkleidung oder Abdeckung zu dienen, als auch eine sekundäre Funktion, nämlich als Träger für eine oder mehrere Leiterbahnen zu dienen. Auf diese Weise entsteht ein multifunktionales Bauteil, das Vorteile hinsichtlich des benötigten Bauraums im Vergleich zu einer herkömmlichen Anordnung aufweist, bei der eine separate Antenne im Inneren eines Anbauteils angeordnet ist.According to the invention, the attachment to the track of the antenna, which is formed as injection-molded circuit carrier. As molded interconnect devices (molded interconnected devices) are generally referred to electrical or electronic components having metallic tracks, which are applied to an injection-molded plastic part, which serves as a carrier. By being formed as an injection-molded circuit carrier, the attachment can fulfill both a primary function of serving as a cladding or covering and a secondary function of serving as a carrier for one or more tracks. In this way, a multifunctional component, which has advantages in terms of the required installation space in comparison with a conventional arrangement, in which a separate antenna is arranged in the interior of an attachment.

Erfindungsgemäß wird es besonders bevorzugt, dass die Leiterbahn des Anbauteils elektrisch an ein Koaxialkabel angeschlossen ist, das wenigstens teilweise Bestandteil des spritzgegossenen Schaltungsträgers ist. Wenn die Leiterbahn des Anbauteils elektrisch an ein Koaxialkabel angeschlossen ist, wird kein zusätzlicher Bauraum für eine Kontaktierung des Koaxialkabels benötigt.According to the invention, it is particularly preferred that the track of the attachment is electrically connected to a coaxial cable, which is at least partially part of the injection-molded circuit substrate. If the track of the attachment is electrically connected to a coaxial cable, no additional space for contacting the coaxial cable is needed.

Es wird besonders bevorzugt, dass das erfindungsgemäße Anbauteil als Spiegelsockel eines Innenrückblickspiegels ausgebildet ist. Wenn das die Antenne aufweisende Anbauteil als Spiegelsockel eines Innenrückspiegels ausgebildet ist, ergibt sich eine sehr gute Sende- und Empfangsleistung nach vorne, in Fahrtrichtung. Da die Leiterbahn als spritzgegossener Schaltungsträger ausgebildet ist, ist eine Vergrößerung des Spiegelsockels nicht erforderlich.It is particularly preferred that the attachment according to the invention is designed as a mirror base of an interior rearview mirror. If the antenna having attachment is designed as a mirror base of an interior rearview mirror, there is a very good transmission and reception power forward, in the direction of travel. Since the conductor is formed as injection-molded circuit carrier, an enlargement of the mirror base is not required.

Gemäß einer alternativen Ausgestaltung der Erfindung kann das Anbauteil auch als Bestandteil der Frontverkleidung des Kraftfahrzeugs ausgebildet sein. Bei dieser Variante kann die Leiterbahn einer Antenne im Frontbereich in einem Verkleidungsteil aus Kunststoff angeordnet sein.According to an alternative embodiment of the invention, the attachment can also be formed as part of the front panel of the motor vehicle be. In this variant, the conductor track of an antenna can be arranged in the front region in a trim part made of plastic.

Gemäß einer Weiterbildung der Erfindung kann es vorgesehen sein, dass das Anbauteil mehrere Antennen und/oder mehrere Leiterbahnen aufweist. Mehrere Antennen können vorgesehen sein, um einen Empfang aus unterschiedlichen Richtungen zu optimieren, daneben können auch mehrere Antennen für unterschiedliche Frequenzen vorgesehen sein.According to one embodiment of the invention, it may be provided that the attachment has a plurality of antennas and / or a plurality of interconnects. Several antennas may be provided to optimize reception from different directions, besides several antennas for different frequencies may be provided.

Eine besonders gute Integration der die Leiterbahn aufweisenden Antenne in das Anbauteil ergibt sich, wenn eine Leiterbahn einer Antenne eine dreidimensionale, an die Form des Anbauteils angepasste Form aufweist. Die Form der Leiterbahn ist somit an die Form bzw. Außenkontur des Anbauteils, insbesondere an die Form des Spiegelsockels eines Innenrückblickspiegels, angepasst. Die Antenne kann dann praktisch ohne zusätzlichen Bauraumbedarf in den Spiegelsockel integriert werden. Da keine zusätzlichen Antennenbauteile erforderlich sind, verursacht das Vorsehen einer weiteren Antenne lediglich vergleichsweise geringe Kosten.A particularly good integration of the track having the antenna in the attachment results when a track of an antenna has a three-dimensional, adapted to the shape of the attachment shape. The shape of the conductor track is thus adapted to the shape or outer contour of the attachment, in particular to the shape of the mirror base of an interior rearview mirror. The antenna can then be integrated into the mirror base practically without any additional space requirement. Since no additional antenna components are required, the provision of a further antenna only causes comparatively low costs.

Daneben betrifft die Erfindung ein Kraftfahrzeug, mit wenigstens einem Anbauteil und wenigstens einer eine Leiterbahn aufweisenden Antenne zum Senden und/oder Empfangen von Funksignalen.In addition, the invention relates to a motor vehicle, with at least one attachment and at least one track having an antenna for transmitting and / or receiving radio signals.

Das erfindungsgemäße Kraftfahrzeug ist dadurch gekennzeichnet, dass das Anbauteil und die wenigstens eine Leiterbahn der Antenne als spritzgegossener Schaltungsträger ausgebildet ist.The motor vehicle according to the invention is characterized in that the attachment and the at least one track of the antenna is formed as an injection-molded circuit carrier.

In den Unteransprüchen sind weitere Ausgestaltungen der Erfindung beschrieben.In the subclaims further embodiments of the invention are described.

Weitere Vorteile und Einzelheiten der Erfindung werden nachfolgend unter Bezugnahme auf die Zeichnungen erläutert. Die Zeichnungen sind schematische Darstellungen und zeigen:

Fig. 1
eine Seitenansicht eines erfindungsgemäßen Fahrzeugs mit einem erfindungsgemäßen Anbauteil;
Fig. 2
eine vergrößerte Darstellung des erfindungsgemäßen Anbauteils; und
Fig. 3
eine perspektivische Ansicht eines erfindungsgemäßen Anbauteils.
Further advantages and details of the invention are explained below with reference to the drawings. The drawings are schematic representations and show:
Fig. 1
a side view of a vehicle according to the invention with an attachment according to the invention;
Fig. 2
an enlarged view of the attachment according to the invention; and
Fig. 3
a perspective view of an attachment according to the invention.

Fig. 1 ist eine Seitenansicht eines Kraftfahrzeugs 1, das eine Dachantenne 2 aufweist. In der Dachantenne 2 sind mehrere Antennen integriert, wobei eine Antenne eine Verbindung mit einem Mobilfunknetz ermöglicht und eine weitere Antenne für eine Car-to-Car-Kommunikation vorgesehen ist. Die von der Dachantenne 2 ausgehenden Pfeile 3 zeigen an, in welche Richtung eine Aussendung bzw. Abstrahlung von elektromagnetischen Wellen möglich ist. Man erkennt, dass nach hinten und oben eine gute Abstrahlung erfolgt, nicht jedoch nach vorne. Für bestimmte Car-to-Car-Anwendungen ist jedoch ein Sende- und Empfangsbetrieb in Frontrichtung besonders wichtig, damit zum Beispiel drahtlos gesendete Informationen von entgegenkommenden Fahrzeugen empfangen und an diese gesendet werden können. Das erfindungsgemäße Kraftfahrzeug 1 weist daher zusätzlich eine weitere Antenne 4 auf, die in einen Spiegelsockel 5 eines Innenrückblickspiegels 6 integriert ist. Die Antenne 4 ist so angeordnet, dass die Abstrahlung und der Empfang von Wellen nach bzw. von vorne möglich ist. Fig. 1 is a side view of a motor vehicle 1 having a roof antenna 2. In the roof antenna 2, a plurality of antennas are integrated, wherein one antenna allows a connection to a mobile network and another antenna is provided for a car-to-car communication. The outgoing of the roof antenna 2 arrows 3 indicate in which direction a transmission or emission of electromagnetic waves is possible. It can be seen that there is good radiation to the rear and to the top, but not to the front. However, for certain car-to-car applications, front-facing transceiver is particularly important, for example, to receive and send wirelessly transmitted information from oncoming vehicles. The motor vehicle 1 according to the invention therefore additionally has a further antenna 4, which is integrated in a mirror base 5 of an interior rearview mirror 6. The antenna 4 is arranged so that the radiation and the reception of waves to or from the front is possible.

Fig. 2 zeigt den Bereich der Antenne 4 in einem vergrößerten Maßstab. Der Spiegelsockel 5 ist ein Anbauteil, das am oberen Ende einer Windschutzscheibe 7 im Fahrzeuginnenraum 8 angeordnet ist. An dem Spiegelsockel 5 ist der Innenrückblickspiegel 6 angebracht. Im Inneren des Spiegelsockels 5 sind weitere Komponenten angeordnet, zum Beispiel eine Kamera, Regensensoren und gegebenenfalls eine Stromversorgung für den Innenrückblickspiegel 6. Fig. 2 shows the area of the antenna 4 on an enlarged scale. The mirror base 5 is an attachment which is arranged at the upper end of a windshield 7 in the vehicle interior 8. On the mirror base 5 of the interior rearview mirror 6 is attached. In the interior of the mirror base 5, further components are arranged, for example a camera, rain sensors and possibly a power supply for the interior rearview mirror 6.

Das als Spiegelsockel 5 ausgebildete Anbauteil weist als Bestandteil der Antenne 4 wenigstens eine Leiterbahn auf, die in Fig. 2 schematisch dargestellt ist und eine Mäanderform aufweist. Die Form und Länge der Leiterbahn ist im Hinblick auf die Funkfrequenz(en) festgelegt und optimiert.Trained as a mirror base 5 attachment has as part of the antenna 4 at least one conductor track, which in Fig. 2 is shown schematically and has a meandering shape. The shape and length of the trace is fixed and optimized with respect to the radio frequency (s).

Die Antenne 4 mit der Leiterbahn ist in das als Spiegelsockel 5 ausgebildete Anbauteil integriert, das als spritzgegossener Schaltungsträger ausgebildet ist. Das bedeutet, dass das Anbauteil und die Leiterbahn als integrales Bauteil ausgebildet sind. Bei der Herstellung des als Spiegelsockel 5 ausgebildeten Anbauteils wird im Zweikomponentenspritzguss ein Grundkörper, der die äußere Kontur festlegt, gebildet, wobei ein bestimmter Kunststoff verwendet wird. Ein weiterer, zweiter Kunststoff ist metallisierbar und bildet das Layout der Leiterbahn ab. Es existieren unterschiedliche Herstellungsverfahren zur Herstellung eines spritzgegossenen Schaltungsträgers, zum Beispiel kann zunächst die Leiterbahngeometrie erhaben ausgebildet werden, anschließend werden Bereiche zwischen den Leiterbahnen mit einem nicht metallisierbaren Kunststoff aufgefüllt. Bei einem alternativen Verfahren wird in einem ersten Schuss des Spritzgussverfahrens die Leiterbahnstruktur als Vertiefung aus einem nicht metallisierbaren Kunststoff gespritzt. In einem zweiten Schuss werden die vertieften Bereiche mit einer metallisierbaren Komponente gefüllt. Auf den metallisierbaren Kunststoff kann galvanisch Kupfer oder ein anderes leitfähiges Material aufgebracht werden.The antenna 4 with the conductor track is integrated into the attachment designed as a mirror base 5, which is designed as an injection-molded circuit carrier. This means that the attachment and the conductor track are formed as an integral component. In the manufacture of the attachment designed as a mirror base 5 is in the two-component injection molding a base body, which determines the outer contour, is formed, wherein a certain plastic is used. Another, second plastic is metallizable and forms the layout of the trace. There are different manufacturing methods for producing an injection-molded circuit carrier, for example, first, the conductor track geometry can be formed sublime, then areas between the tracks are filled with a non-metallizable plastic. In an alternative method, in a first shot of the injection molding process, the conductor track structure is injected as a recess made of a non-metallizable plastic. In a second shot, the recessed areas are filled with a metallizable component. On the metallizable plastic can be applied galvanically copper or other conductive material.

Fig. 3 ist eine perspektivische Ansicht des Spiegelsockels 5. In dem dargestellten Ausführungsbeispiel besitzt der Spiegelsockel 5 eine näherungsweise prismatische, hohle Grundform. Die Antenne 4 umfasst eine erste Leiterbahn 9 und eine zweite Leiterbahn 10, die jeweils eine Mäanderform aufweisen und die Bestandteil des Spiegelsockels 5 sind. Der als spritzgegossener Leitungsträger (molded interconnected device) ausgebildete Spiegelsockel 5 weist somit Flächen 11, 12 auf, die die Leiterbahnen 9, 10 der Antenne 4 aufweisen. Die Form und Anordnung der Leiterbahnen 9, 10 ist dabei so gewählt, dass die Antennenleistung optimal ist. Die Kontaktierung der Leiterbahnen 9, 10 erfolgt über ein Koaxialkabel 13, das einer an einer anderen Position im Kraftfahrzeug 1 angeordneten Steuereinheit zugeführt wird. Es sind auch Varianten möglich, bei denen auch ein Teil des Koaxialkabels 13 in den Spiegelsockel 5 integriert ist, so dass der Spiegelsockel 5 ein Kontaktelement, zum Beispiel einen Stecker oder dergleichen, aufweist. Fig. 3 is a perspective view of the mirror base 5. In the illustrated embodiment, the mirror base 5 has an approximately prismatic, hollow basic shape. The antenna 4 comprises a first conductor 9 and a second conductor 10, each having a meandering shape and which are part of the mirror base 5. The molded as an injection molded lead carrier (molded interconnected device) formed mirror base 5 thus has surfaces 11, 12, which have the tracks 9, 10 of the antenna 4. The shape and arrangement of the tracks 9, 10 is chosen so that the antenna performance is optimal. The contacting of the conductor tracks 9, 10 via a coaxial cable 13, which is supplied to a arranged at a different position in the motor vehicle 1 control unit. It Variants are also possible in which a part of the coaxial cable 13 is integrated into the mirror base 5, so that the mirror base 5 has a contact element, for example a plug or the like.

Darüber hinaus sind im Inneren des Spiegelsockels 5 weitere Komponenten angeordnet, zum Beispiel ein Sensor 14 oder eine Kamera, wie in Fig. 3 schematisch dargestellt ist.In addition, 5 further components are arranged in the interior of the mirror base, for example a sensor 14 or a camera, as in Fig. 3 is shown schematically.

Claims (5)

  1. An attachment for a motor vehicle (1), the attachment comprising at least one antenna (4) for transmitting and/or receiving radio signals, the antenna having a conductor path (8, 9), wherein the attachment and the at least one conductor path (8, 9) of the antenna (4) are configured as an injection-molded interconnect device,
    characterized in that
    the attachment is configured as a mirror base (5) of an interior rear mirror (6) and has a prismatic hollow shape, whereby the conductor path (8, 9) is electrically connected to a coaxial cable (13), at least a portion of the coaxial cable being a component of the injection-molded interconnect device.
  2. The attachment according to claim 1,
    characterized in that
    the attachment comprises multiple antennas (4) and/or multiple conductor paths (9, 10).
  3. The attachment according to any of the preceding claims,
    characterized in that
    a conductor path (9, 10) of the antenna (4) has a three-dimensional shape adapted to a shape of the attachment.
  4. A motor vehicle (1) comprising an attachment according to any of claims 1 to 3.
  5. The motor vehicle according to claim 4,
    characterized in that
    the motor vehicle comprises at least one further antenna preferably configured as a roof antenna (2).
EP14714179.0A 2013-04-08 2014-03-29 Attachment for a motor vehicle and associated motor vehicle Not-in-force EP2984706B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013006056.7A DE102013006056A1 (en) 2013-04-08 2013-04-08 Attachment for a motor vehicle and associated motor vehicle
PCT/EP2014/000846 WO2014166600A1 (en) 2013-04-08 2014-03-29 Attachment for a motor vehicle and associated motor vehicle

Publications (2)

Publication Number Publication Date
EP2984706A1 EP2984706A1 (en) 2016-02-17
EP2984706B1 true EP2984706B1 (en) 2016-10-12

Family

ID=50397106

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14714179.0A Not-in-force EP2984706B1 (en) 2013-04-08 2014-03-29 Attachment for a motor vehicle and associated motor vehicle

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US (1) US20160072180A1 (en)
EP (1) EP2984706B1 (en)
CN (1) CN105103370A (en)
DE (1) DE102013006056A1 (en)
WO (1) WO2014166600A1 (en)

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Also Published As

Publication number Publication date
US20160072180A1 (en) 2016-03-10
CN105103370A (en) 2015-11-25
DE102013006056A1 (en) 2014-10-09
EP2984706A1 (en) 2016-02-17
WO2014166600A1 (en) 2014-10-16

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