EP3235057B1 - Water-tight lte antenna having pu potting - Google Patents

Water-tight lte antenna having pu potting Download PDF

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Publication number
EP3235057B1
EP3235057B1 EP15810734.2A EP15810734A EP3235057B1 EP 3235057 B1 EP3235057 B1 EP 3235057B1 EP 15810734 A EP15810734 A EP 15810734A EP 3235057 B1 EP3235057 B1 EP 3235057B1
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EP
European Patent Office
Prior art keywords
antenna
shell
plastic half
potting compound
carrier
Prior art date
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EP15810734.2A
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German (de)
French (fr)
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EP3235057A1 (en
Inventor
David Silva
Rainer Schiemann
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Hirschmann Car Communication GmbH
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Hirschmann Car Communication GmbH
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Publication of EP3235057A1 publication Critical patent/EP3235057A1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/32—Adaptation for use in or on road or rail vehicles
    • 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

Definitions

  • the invention relates to an antenna for a vehicle, having a carrier, in particular a printed circuit board, with antenna structures for transmitting and / or receiving high-frequency signals being arranged on the carrier and with the antenna having a connector for connection to an electronic device, according to the features of Preamble of claim 1.
  • Watertight housings for example two housing parts that are connected to one another via a seal, are complex to manufacture and assemble and are therefore usually very costly
  • the invention is therefore based on the object of developing a known antenna of the generic type in such a way that it is easy to manufacture, is inexpensive and has the required tightness.
  • the antenna has a plastic half-shell with a surrounding frame, into which the carrier is inserted, the plastic half-shell being filled with a potting compound.
  • the plastic half-shell with the surrounding frame can be produced simply and inexpensively, for example in a plastic injection molding process. This is especially true for high numbers of items.
  • the carrier for example the printed circuit board with the antenna structures on it for sending and / or receiving high-frequency signals, can be inserted into the plastic half-shell within the surrounding frame and set in its desired position.
  • the Plastic half-shell with the potting compound as a result of which at least one upper side of the carrier, preferably both sides and also the edges, are surrounded by the potting compound.
  • the volume of the plastic half-shell that is to be filled with the potting compound is known (possibly taking into account the carrier, the fastening means and the connector pointing into the interior of the plastic half-shell), a predeterminable amount of potting compound can be poured into the plastic half-shell and harden there, so that the required watertightness and the associated mechanical protection of the sensitive antenna structures is achieved.
  • the volume of the potting compound is selected so that the potting compound cannot flow off over the upper edge of the surrounding frame, but ends at the maximum or even slightly below it.
  • the carrier in particular the printed circuit board, with the antenna structures is not only advantageously completely surrounded by potting compound, but the antenna also has the necessary stability for outdoor use in automobiles due to the presence of the plastic half-shell with the surrounding frame on.
  • the carrier in particular the printed circuit board
  • the carrier is fixed to the plastic half-shell by means of fastening means.
  • fastening means can, for example, be snap-in hooks that interact with spacers on the surface of the plastic half-shell in order to fix the flat carrier, in particular the printed circuit board, at a short distance above the surface of the plastic half-shell, so that this gap thus formed with the potting compound to achieve watertightness can be filled out.
  • fastening means such as rivets, screws or simple spacers, which are arranged between the carrier and the plastic half-shell and then also surrounded with potting compound, are also conceivable.
  • the plastic half-shell forms a connector housing of the connector.
  • the plastic half-shell has a mounting foot.
  • the mounting foot is designed in such a way that the antenna can be arranged and fastened at the desired installation location via it.
  • the mounting foot is connected to a holder, in particular an angle holder.
  • the antenna can be arranged and fixed at its installation location either solely via the mounting foot or only alone using the holder or by using the mounting foot and holder together. If the mounting foot and the holder are separate components, there is the advantage that a uniform mounting foot of the antenna is used, which interacts with different holders, in particular different angle holders, in order to be able to take different installation geometries into account.
  • the mounting foot is connected to the holder, in particular the angle holder, via at least one strut.
  • the antenna can be arranged approximately at right angles to the mounting surface where it is arranged and fixed, this arrangement being given the required stability by the at least one strut, preferably two struts, which is particularly advantageous when used outdoors in automobiles.
  • the connector is a FAKRA connector. This means that a standardized connector is available for use in automobiles, so that the antenna can advantageously be used universally and connected to the electronic device.
  • the potting compound is a potting compound based on PU or epoxy or silicone.
  • PU polyurethane-based
  • FIGS. 1 to 3 show, as far as shown in detail, an antenna 1 which has a plastic half-shell 2, the plastic half-shell 2 having a surrounding frame 3, in particular on its outer edge.
  • the antenna 1 is designed to transmit and / or receive high-frequency signals depending on the antenna structures, antenna elements or the like used.
  • the frequency ranges and services (such as telephone, internet, GPS, WLAN and so on) can be freely selected.
  • LTE frequencies Long Term Evolution
  • the use with LTE frequencies is particularly advantageous, since the antenna is used outside the vehicle and waterproofness plays an important role.
  • a no longer recognizable carrier with antenna structures has already been inserted into the plastic half-shell 2 and the volume within the plastic half-shell 2 has been filled with a potting compound 4 up to a maximum level of the edge of the surrounding frame 3.
  • the plastic half-shell 2 is filled with the potting compound 4 up to a maximum of the upper edge of the surrounding frame 3 and can, however, also be below the frame 3 take place.
  • a plug connector 5, in particular a FAKRA plug connector protrudes outwards from the antenna 1 in order to feed the signals received with the antenna 1 to an electronic device (not shown in detail) via a corresponding mating connector and a cable. The same applies in the event that high-frequency signals are to be emitted via the antenna 1 via an electronic device.
  • the antenna 1 To fasten the antenna 1 at its installation location, it has a mounting foot 6, the plastic half-shell 2 with its frame 3, the connector 5 (more precisely its connector housing) and the mounting foot 6 forming a one-piece component in a particularly advantageous manner. While the mounting foot 6 can be designed in such a way that the antenna 1 can be arranged and fixed at its installation location by means of it, an angle bracket 7 is shown in an alternative embodiment, which is fastened to the mounting foot 6. If the angled holder 7 (or generally a different-shaped holder that does not necessarily have to be angular) consists of a metallic material, it can optionally be used for a ground connection or shielding of the antenna 1.
  • Figure 4 shows the antenna 1 before the potting compound 4 has been poured into the plastic half-shell 2.
  • a carrier in particular a printed circuit board 8
  • FIG. 4 shows the antenna 1 before the potting compound 4 has been poured into the plastic half-shell 2.
  • a carrier in particular a printed circuit board 8
  • FIG. 4 shows the antenna 1 before the potting compound 4 has been poured into the plastic half-shell 2.
  • a carrier in particular a printed circuit board 8
  • spacers are present, so that the potting compound 4 enters this intermediate area between the surface of the frame 3 over the intermediate area between the outer edge of the circuit board 8 and the inner area of the frame 3 PCB 8 and surface of the plastic half-shell 2 can penetrate.
  • the circuit board 8 in addition or as an alternative to this intermediate area, also have at least one hole, in particular also several holes, so that the potting compound 4 can pour into the flat intermediate area between the plastic half-shell 2 and the printed circuit board 8. This is particularly necessary when the outer edge of the printed circuit board 8 lies completely or almost completely against the frame 3 or only to a very small extent Distance to it is arranged.
  • a fastening means 9 is present.
  • the fastening means 9 is designed here as a screw which is passed through a hole in the circuit board 8 and engages in a thread which is located on the plastic half-shell 2.
  • At least one spacer can be present between the underside of the circuit board 8, which is directed in the direction of the plastic half-shell 2, and the surface of the plastic half-shell 2, which is directed in the direction of the underside of the circuit board 8, to keep the circuit board 8 in To keep a distance to the plastic half-shell 2.
  • the connector housing is a component of the plastic half-shell 2
  • the inner conductor of the connector 5 is directed in the direction of a soldering point 10 on the circuit board 8.
  • the inner conductor of the connector 5 is soldered to the soldering point 10 on the circuit board 8 in order to establish an electrical connection between the connector 5 and the unspecified and also not produce antenna structures shown in more detail on the circuit board 8.
  • the area of the soldering point 10 can also be referred to as the antenna base point of the antenna 1.
  • 11 also designates a strut, which in this case is part of the plastic half-shell 2.
  • struts 11 which are arranged parallel to one another and which interact with the holder, in particular the angle holder 7. It is conceivable, for example, that the at least one strut 11 is designed in such a way that the holder, in particular the angle holder 7, is fixed to the plastic half-shell 2 via it.
  • This can be permanently supported by corresponding locking means.

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  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Details Of Aerials (AREA)
  • Support Of Aerials (AREA)

Description

Die Erfindung betrifft eine Antenne für ein Fahrzeug, aufweisend einen Träger, insbesondere eine Leiterplatte, wobei auf dem Träger Antennenstrukturen zum Senden und/oder Empfangen hochfrequenter Signale angeordnet sind und wobei die Antenne einen Steckverbinder zum Anschluss an ein elektronisches Gerät aufweist, gemäß den Merkmalen des Oberbegriffes des Patentanspruches 1.The invention relates to an antenna for a vehicle, having a carrier, in particular a printed circuit board, with antenna structures for transmitting and / or receiving high-frequency signals being arranged on the carrier and with the antenna having a connector for connection to an electronic device, according to the features of Preamble of claim 1.

Für den Automobileinsatz von Antennen im Außenbereich des Fahrzeuges werden wasserdichte Produkte benötigt. Wasserdichte Gehäuse, zum Beispiel zwei Gehäuseteile, die über eine Dichtung miteinander verbunden sind, sind aufwändig in der Herstellung, der Montage und daher in der Regel sehr kostenintensivFor the automotive use of antennas in the exterior of the vehicle, waterproof products are required. Watertight housings, for example two housing parts that are connected to one another via a seal, are complex to manufacture and assemble and are therefore usually very costly

Aus dem Stand der Technik sind die JP 02035803 , die DE 10 2008 036 512 A1 , sowie die JP 07273535 vorbekannt, die vergossene und somit wasserdichte Antennenanordnungen zeigen.From the prior art are those JP 02035803 , the DE 10 2008 036 512 A1 , as well as the JP 07273535 previously known that show the encapsulated and thus watertight antenna arrangements.

Der Erfindung liegt daher die Aufgabe zugrunde, eine gattungsgemäße bekannte Antenne dahingehend weiterzubilden, dass sie einfach herstellbar ist, kostengünstig ist und die erforderliche Dichtheit aufweist.The invention is therefore based on the object of developing a known antenna of the generic type in such a way that it is easy to manufacture, is inexpensive and has the required tightness.

Diese Aufgabe ist durch die Merkmale des Patentanspruches 1 gelöst.This object is achieved by the features of claim 1.

Erfindungsgemäß ist vorgesehen, dass die Antenne eine Kunststoffhalbschale mit einem umlaufenden Rahmen aufweist, in die der Träger eingesetzt ist, wobei die Kunststoffhalbschale mit einer Vergussmasse ausgefüllt ist. Die Kunststoffhalbschale mit dem umlaufenden Rahmen kann einfach und kostengünstig, zum Beispiel in einem Kunststoffspritzgussverfahren, hergestellt werden. Dies gilt insbesondere für hohe Stückzahlen. Nach der Herstellung der Kunststoffhalbschale mit dem umlaufenden Rahmen kann der Träger, zum Beispiel die Leiterplatte mit den darauf befindlichen Antennenstrukturen zum Senden und/oder Empfangen hochfrequenter Signale, innerhalb des umlaufenden Rahmens in die Kunststoffhalbschale eingesetzt werden und in ihrer Sollposition festgelegt werden. Anschließend erfolgt das Ausfüllen der Kunststoffhalbschale mit der Vergussmasse, wodurch zumindest die eine Oberseite des Trägers, vorzugsweise beide Seiten und auch die Ränder, von der Vergussmasse umgeben werden. Da das Volumen der Kunststoffhalbschale, das mit der Vergussmasse ausgefüllt werden soll, bekannt ist (gegebenenfalls unter Berücksichtigung des Trägers, der Befestigungsmittel und des in das Innere der Kunststoffhalbschale weisenden Steckverbinders), kann ein vorgebbares an Vergussmasse in die Kunststoffhalbschale eingefüllt werden und dort aushärten, sodass die erforderliche Wasserdichtheit und damit einhergehend auch ein mechanischer Schutz der empfindlichen Antennenstrukturen realisiert ist. Das Volumen der Vergussmasse ist so gewählt, dass die Vergussmasse nicht über den oberen Rand des umlaufenden Rahmens abfließen kann, sondern maximal oder auch geringfügig darunter mit diesem abschließt. Nach der vorstehend beschriebenen Herstellung der Antenne ist der Träger, insbesondere die Leiterplatte, mit den Antennenstrukturen nicht nur in vorteilhafter Weise vollständig von Vergussmasse umgeben, sondern die Antenne weist aufgrund des Vorhandenseins der Kunststoffhalbschale mit dem umlaufenden Rahmen auch die erforderliche Stabilität für den Automobileinsatz im Außenbereich auf.According to the invention, it is provided that the antenna has a plastic half-shell with a surrounding frame, into which the carrier is inserted, the plastic half-shell being filled with a potting compound. The plastic half-shell with the surrounding frame can be produced simply and inexpensively, for example in a plastic injection molding process. This is especially true for high numbers of items. After the production of the plastic half-shell with the surrounding frame, the carrier, for example the printed circuit board with the antenna structures on it for sending and / or receiving high-frequency signals, can be inserted into the plastic half-shell within the surrounding frame and set in its desired position. Then the Plastic half-shell with the potting compound, as a result of which at least one upper side of the carrier, preferably both sides and also the edges, are surrounded by the potting compound. Since the volume of the plastic half-shell that is to be filled with the potting compound is known (possibly taking into account the carrier, the fastening means and the connector pointing into the interior of the plastic half-shell), a predeterminable amount of potting compound can be poured into the plastic half-shell and harden there, so that the required watertightness and the associated mechanical protection of the sensitive antenna structures is achieved. The volume of the potting compound is selected so that the potting compound cannot flow off over the upper edge of the surrounding frame, but ends at the maximum or even slightly below it. After the antenna has been manufactured as described above, the carrier, in particular the printed circuit board, with the antenna structures is not only advantageously completely surrounded by potting compound, but the antenna also has the necessary stability for outdoor use in automobiles due to the presence of the plastic half-shell with the surrounding frame on.

In Weiterbildung der Erfindung ist der Träger, insbesondere die Leiterplatte, über Befestigungsmittel an der Kunststoffhalbschale festgelegt. Diese Befestigungsmittel können zum Beispiel Rasthaken sein, die mit Abstandshaltern auf der Oberfläche der Kunststoffhalbschale zusammenwirken, um den flächigen Träger, insbesondere die Leiterplatte, auf geringer Distanz oberhalb der Oberfläche der Kunststoffhalbschale zu fixieren, damit dieser dadurch gebildete Zwischenraum mit der Vergussmasse zur Erzielung der Wasserdichtheit ausgefüllt werden kann. Selbstverständlich sind auch andere Arten von Befestigungsmitteln, wie zum Beispiel Nieten, Schrauben oder einfache Abstandshalter, die zwischen Träger und Kunststoffhalbschale angeordnet und anschließend auch mit Vergussmasse umgeben werden, denkbar.In a further development of the invention, the carrier, in particular the printed circuit board, is fixed to the plastic half-shell by means of fastening means. These fastening means can, for example, be snap-in hooks that interact with spacers on the surface of the plastic half-shell in order to fix the flat carrier, in particular the printed circuit board, at a short distance above the surface of the plastic half-shell, so that this gap thus formed with the potting compound to achieve watertightness can be filled out. Of course, other types of fastening means, such as rivets, screws or simple spacers, which are arranged between the carrier and the plastic half-shell and then also surrounded with potting compound, are also conceivable.

In Weiterbildung der Erfindung bildet die Kunststoffhalbschale ein Steckverbindergehäuse des Steckverbinders. Dies hat den Vorteil, dass mit Herstellung der Kunststoffhalbschale, insbesondere in einem Kunststoffgussverfahren oder in einem Kunststoffspritzgussverfahren, das Steckverbindergehäuse des Steckverbinders direkt schon mit hergestellt wird. Die separate Herstellung eines Steckverbindergehäuses, welches an der Kunststoffhalbschale angeordnet werden kann, entfällt dadurch in vorteilhafter Weise, ist jedoch gleichwohl auch als Alternative noch möglich.In a further development of the invention, the plastic half-shell forms a connector housing of the connector. This has the advantage that with the production of the plastic half-shell, in particular in a plastic casting process or in a plastic injection molding process, the connector housing of the connector is already produced directly. The separate production of a connector housing, which can be arranged on the plastic half-shell, is thereby advantageously dispensed with, but is nevertheless still possible as an alternative.

Die Kunststoffhalbschale weist einen Montagefuß auf. Der Montagefuß ist so ausgestaltet, dass über ihn die Antenne an dem gewünschten Einbauort angeordnet und befestigt werden kann.The plastic half-shell has a mounting foot. The mounting foot is designed in such a way that the antenna can be arranged and fastened at the desired installation location via it.

Der Montagefuß ist mit einem Halter, insbesondere einem Winkelhalter, verbunden. Entweder nur alleine über den Montagefuß oder nur alleine über den Halter oder durch gemeinsamen Einsatz von Montagefuß und Halter kann die Antenne an ihrem Einbauort angeordnet und festgelegt werden. Sind der Montagefuß und der Halter getrennte Bauteile, besteht der Vorteil, dass ein einheitlicher Montagefuß der Antenne zur Anwendung kommt, der mit unterschiedlichen Haltern, insbesondere unterschiedlichen Winkelhaltern, zusammenwirkt, um unterschiedlichen Einbaugeometrien Rechnung tragen zu können.The mounting foot is connected to a holder, in particular an angle holder. The antenna can be arranged and fixed at its installation location either solely via the mounting foot or only alone using the holder or by using the mounting foot and holder together. If the mounting foot and the holder are separate components, there is the advantage that a uniform mounting foot of the antenna is used, which interacts with different holders, in particular different angle holders, in order to be able to take different installation geometries into account.

Der Montagefuß ist über zumindest eine Strebe mit dem Halter, insbesondere dem Winkelhalter, verbunden. Dadurch kann die Antenne in etwa rechtwinklig zu der Montagefläche, wo sie angeordnet und festgelegt wird, angeordnet werden, wobei diese Anordnung durch die zumindest eine Strebe, vorzugsweise zwei Streben, die erforderliche Stabilität erhält, die besonders beim Automobileinsatz im Außenbereich von Vorteil ist.The mounting foot is connected to the holder, in particular the angle holder, via at least one strut. As a result, the antenna can be arranged approximately at right angles to the mounting surface where it is arranged and fixed, this arrangement being given the required stability by the at least one strut, preferably two struts, which is particularly advantageous when used outdoors in automobiles.

In Weiterbildung der Erfindung ist der Steckverbinder ein FAKRA-Steckverbinder. Damit steht für den Automobileinsatz ein genormter Steckverbinder zur Verfügung, sodass die Antenne in vorteilhafter Weise universell eingesetzt werden und an das elektronische Gerät angeschlossen werden kann.In a further development of the invention, the connector is a FAKRA connector. This means that a standardized connector is available for use in automobiles, so that the antenna can advantageously be used universally and connected to the electronic device.

In Weiterbildung der Erfindung ist die Vergussmasse eine Vergussmasse auf PU-Basis oder Epoxid-Basis oder Silikon-Basis. Damit stehen verschiedene Varianten für die Vergussmasse zur Verfügung, die in Abhängigkeit der verwendeten Materialien (insbesondere des Materials des Trägers sowie des Materials der Kunststoffhalbschale) der Einsatzbedingungen (zum Beispiel Innen- oder Außenbereich des Fahrzeuges) der Handhabbarkeit beim Vergießen und auch im Hinblick auf die Kosten ausgewählt werden können. Von besonderem Vorteil ist es, wenn die Vergussmasse eine Vergussmasse auf PU-Basis (Polyurethan-Basis) ist, da sich mit einer solchen Vergussmasse die Wasserdichtheit bei vergleichsweise niedrigen Kosten und sehr guter Handhabbarkeit beim Vergießen zur Verfügung steht.In a further development of the invention, the potting compound is a potting compound based on PU or epoxy or silicone. This means that different variants are available for the potting compound, which, depending on the materials used (in particular the material of the carrier and the material of the plastic half-shell), the operating conditions (for example inside or outside of the vehicle), the manageability during potting and also with regard to the Costs can be selected. It is particularly advantageous if the potting compound is a PU-based (polyurethane-based) potting compound, since with such a potting compound waterproofness is available at comparatively low costs and very easy to handle when potting.

Ein Ausführungsbeispiel einer erfindungsgemäßen Antenne ist im Folgenden beschrieben und anhand der Figuren erläutert.An embodiment of an antenna according to the invention is described below and explained with reference to the figures.

Die Figuren 1 bis 3 zeigen, soweit im Einzelnen dargestellt, eine Antenne 1, die eine Kunststoffhalbschale 2 aufweist, wobei die Kunststoffhalbschale 2 insbesondere an ihrem äußeren Rand einen umlaufenden Rahmen 3 aufweist.The Figures 1 to 3 show, as far as shown in detail, an antenna 1 which has a plastic half-shell 2, the plastic half-shell 2 having a surrounding frame 3, in particular on its outer edge.

Die Antenne 1 ist abhängig von den verwendeten Antennenstrukturen, Antennenelementen oder dergleichen zum Senden und/oder Empfangen hochfrequenter Signale ausgebildet. Die Frequenzbereiche und Dienste (wie zum Beispiel Telefon, Internet, GPS, WLAN und so weiter) sind dabei frei wählbar. Von besonderem Vorteil ist die Anwendung bei LTE-Frequenzen (Long Term Evolution), da hierbei die Antenne im Außenbereich des Fahrzeuges zum Einsatz kommt und dabei die Wasserdichtheit eine wichtige Rolle spielt.The antenna 1 is designed to transmit and / or receive high-frequency signals depending on the antenna structures, antenna elements or the like used. The frequency ranges and services (such as telephone, internet, GPS, WLAN and so on) can be freely selected. The use with LTE frequencies (Long Term Evolution) is particularly advantageous, since the antenna is used outside the vehicle and waterproofness plays an important role.

In den Figuren 1 bis 3 ist schon ein nicht mehr erkennbarer Träger mit Antennenstrukturen in die Kunststoffhalbschale 2 eingelegt worden und das Volumen innerhalb der Kunststoffhalbschale 2 bis maximal auf Höhe des Randes der umlaufenden Rahmens 3 mit einer Vergussmasse 4 ausgefüllt worden. Das Ausfüllen der Kunststoffhalbschale 2 mit der Vergussmasse 4 erfolgt bis maximal an den oberen Rand des umlaufenden Rahmens 3 und kann aber auch bis unterhalb des Rahmens 3 erfolgen. Ein Steckverbinder 5, insbesondere ein FAKRA-Steckverbinder, ist nach außen von der Antenne 1 abstehend vorhanden, um die mit der Antenne 1 empfangenen Signale über einen entsprechenden Gegensteckverbinder und ein Kabel einem nicht näher dargestellten elektronischen Gerät zuzuführen. Gleiches für den Fall, dass über ein elektronisches Gerät hochfrequente Signale über die Antenne 1 abgestrahlt werden sollen.In the Figures 1 to 3 a no longer recognizable carrier with antenna structures has already been inserted into the plastic half-shell 2 and the volume within the plastic half-shell 2 has been filled with a potting compound 4 up to a maximum level of the edge of the surrounding frame 3. The plastic half-shell 2 is filled with the potting compound 4 up to a maximum of the upper edge of the surrounding frame 3 and can, however, also be below the frame 3 take place. A plug connector 5, in particular a FAKRA plug connector, protrudes outwards from the antenna 1 in order to feed the signals received with the antenna 1 to an electronic device (not shown in detail) via a corresponding mating connector and a cable. The same applies in the event that high-frequency signals are to be emitted via the antenna 1 via an electronic device.

Zur Befestigung der Antenne 1 an ihrem Einbauort weist diese einen Montagefuß 6 auf, wobei in besonders vorteilhafter Weise die Kunststoffhalbschale 2 mit ihrem Rahmen 3, der Steckverbinder 5 (genauer dessen Steckverbindergehäuse) und der Montagefuß 6 ein einstückiges Bauteil bilden. Während der Montagefuß 6 so ausgestaltet sein kann, dass mittels ihm die Antenne 1 an ihrem Einbauort angeordnet und festgelegt werden kann, ist in einer alternativen Ausgestaltung ein Winkelhalter 7 dargestellt, der an dem Montagefuß 6 befestigt ist. Besteht der Winkelhalter 7 (oder allgemein ein andersförmiger Halter, der nicht unbedingt winkelförmig sein muss) aus einem metallischen Werkstoff, kann er optional für eine Masseanbindung oder Abschirmung der Antenne 1 eingesetzt werden.To fasten the antenna 1 at its installation location, it has a mounting foot 6, the plastic half-shell 2 with its frame 3, the connector 5 (more precisely its connector housing) and the mounting foot 6 forming a one-piece component in a particularly advantageous manner. While the mounting foot 6 can be designed in such a way that the antenna 1 can be arranged and fixed at its installation location by means of it, an angle bracket 7 is shown in an alternative embodiment, which is fastened to the mounting foot 6. If the angled holder 7 (or generally a different-shaped holder that does not necessarily have to be angular) consists of a metallic material, it can optionally be used for a ground connection or shielding of the antenna 1.

Figur 4 zeigt die Antenne 1, bevor in die Kunststoffhalbschale 2 die Vergussmasse 4 eingegossen worden ist. Hier ist erkennbar, dass ein Träger, insbesondere eine Leiterplatte 8, innerhalb des Rahmens 3 der Kunststoffhalbschale 2 angeordnet worden ist. Es ist denkbar, dass zum Beispiel auf der in Richtung der Leiterplatte 8 weisenden Oberfläche der Kunststoffhalbschale 2 Abstandshalter vorhanden sind, sodass über den Zwischenbereich zwischen dem äußeren Rand der Leiterplatte 8 und dem inneren Bereich des Rahmens 3 die Vergussmasse 4 in diesen Zwischenbereich zwischen Oberfläche der Leiterplatte 8 und Oberfläche der Kunststoffhalbschale 2 eindringen kann. Ergänzend oder alternativ zu diesem Zwischenbereich kann die Leiterplatte 8, wie in Figur 4 gezeigt, auch zumindest ein Loch, insbesondere auch mehrere Löcher, aufweisen, sodass sich die Vergussmasse 4 in den flächigen Zwischenbereich zwischen Kunststoffhalbschale 2 und Leiterplatte 8 ergießen kann. Dies ist insbesondere dann erforderlich, wenn der äußere Rand der Leiterplatte 8 vollständig oder nahezu vollständig an dem Rahmen 3 anliegt oder nur auf sehr kleiner Distanz dazu angeordnet ist. Weiterhin ist in Figur 4 gezeigt, dass ein Befestigungsmittel 9 vorhanden ist. Das Befestigungsmittel 9 ist hier als Schraube ausgebildet, die durch ein Loch in der Leiterplatte 8 hindurchgeführt ist und in ein Gewinde, welches sich an der Kunststoffhalbschale 2 befindet, eingreift. Auch in diesem Fall kann zwischen der Unterseite der Leiterplatte 8, die in Richtung der Kunststoffhalbschale 2 gerichtet ist, und der Oberfläche der Kunststoffhalbschale 2, die in Richtung der Unterseite der Leiterplatte 8 gerichtet ist, zumindest ein Distanzhalter vorhanden sein, um die Leiterplatte 8 in Distanz zu der Kunststoffhalbschale 2 zu halten. Während das Steckverbindergehäuse ein Bestandteil der Kunststoffhalbschale 2 ist, ist der Innenleiter des Steckverbinders 5 in Richtung einer Lötstelle 10 auf der Leiterplatte 8 gerichtet. Das bedeutet, dass dann, nachdem die Leiterplatte 8 in die Kunststoffhalbschale 2 eingesetzt worden ist, der Innenleiter des Steckverbinders 5 mit der Lötstelle 10 auf der Leiterplatte 8 verlötet wird, um eine elektrische Verbindung zwischen dem Steckverbinder 5 und den nicht näher bezeichneten und auch nicht näher gezeigten Antennenstrukturen auf der Leiterplatte 8 herzustellen. Der Bereich der Lötstelle 10 kann auch als Antennenfußpunkt der Antenne 1 bezeichnet werden. Figure 4 shows the antenna 1 before the potting compound 4 has been poured into the plastic half-shell 2. It can be seen here that a carrier, in particular a printed circuit board 8, has been arranged within the frame 3 of the plastic half-shell 2. It is conceivable that, for example, on the surface of the plastic half-shell 2 facing in the direction of the circuit board 8, spacers are present, so that the potting compound 4 enters this intermediate area between the surface of the frame 3 over the intermediate area between the outer edge of the circuit board 8 and the inner area of the frame 3 PCB 8 and surface of the plastic half-shell 2 can penetrate. In addition or as an alternative to this intermediate area, the circuit board 8, as in FIG Figure 4 shown, also have at least one hole, in particular also several holes, so that the potting compound 4 can pour into the flat intermediate area between the plastic half-shell 2 and the printed circuit board 8. This is particularly necessary when the outer edge of the printed circuit board 8 lies completely or almost completely against the frame 3 or only to a very small extent Distance to it is arranged. Furthermore, in Figure 4 shown that a fastening means 9 is present. The fastening means 9 is designed here as a screw which is passed through a hole in the circuit board 8 and engages in a thread which is located on the plastic half-shell 2. In this case, too, at least one spacer can be present between the underside of the circuit board 8, which is directed in the direction of the plastic half-shell 2, and the surface of the plastic half-shell 2, which is directed in the direction of the underside of the circuit board 8, to keep the circuit board 8 in To keep a distance to the plastic half-shell 2. While the connector housing is a component of the plastic half-shell 2, the inner conductor of the connector 5 is directed in the direction of a soldering point 10 on the circuit board 8. This means that after the circuit board 8 has been inserted into the plastic half-shell 2, the inner conductor of the connector 5 is soldered to the soldering point 10 on the circuit board 8 in order to establish an electrical connection between the connector 5 and the unspecified and also not produce antenna structures shown in more detail on the circuit board 8. The area of the soldering point 10 can also be referred to as the antenna base point of the antenna 1.

Bei dem gezeigten Ausführungsbeispiel ist mit 11 noch eine Strebe bezeichnet, die in diesem Fall Bestandteil der Kunststoffhalbschale 2 ist. Wie insbesondere in Figur 3 sehr gut erkennbar ist, sind zwei parallel zueinander angeordnete Streben 11 vorhanden, die mit dem Halter, insbesondere dem Winkelhalter 7 zusammenwirken. Es ist zum Beispiel denkbar, dass die zumindest eine Strebe 11 so ausgestaltet ist, dass über sie der Halter, insbesondere der Winkelhalter 7, an der Kunststoffhalbschale 2 festgelegt wird. Dies kann beispielsweise über ein Feder-Nut-System zwischen Halter und Strebe erfolgen, sodass der Halter über die zumindest eine Strebe 11, vorzugsweise die beiden Streben 11, in Richtung der Kunststoffhalbschale 2 aufgeschoben und auf Anschlag gebracht wird, wodurch er gleichzeitig festgelegt wird. Dies kann durch korrespondierende Rastmittel dauerhaft unterstützt werden.In the embodiment shown, 11 also designates a strut, which in this case is part of the plastic half-shell 2. As in particular in Figure 3 As can be seen very clearly, there are two struts 11 which are arranged parallel to one another and which interact with the holder, in particular the angle holder 7. It is conceivable, for example, that the at least one strut 11 is designed in such a way that the holder, in particular the angle holder 7, is fixed to the plastic half-shell 2 via it. This can be done, for example, via a tongue and groove system between the holder and strut, so that the holder is pushed onto the at least one strut 11, preferably the two struts 11, in the direction of the plastic half-shell 2 and is brought to a stop, whereby it is fixed at the same time. This can be permanently supported by corresponding locking means.

Während in Figur 4 nur ein einziges Befestigungsmittel 9 dargestellt ist, ist es selbstverständlich denkbar, auch mehr als nur ein Befestigungsmittel 9 vorzusehen.While in Figure 4 Only a single fastening means 9 is shown, it is of course conceivable to provide more than just one fastening means 9.

BezugszeichenlisteList of reference symbols

1.1.
Antenneantenna
2.2.
KunststoffhalbschalePlastic half-shell
3.3.
Rahmenframe
4.4th
VergussmassePotting compound
5.5.
SteckverbinderConnectors
6.6th
MontagefussMounting foot
7.7th
WinkelhalterAngle bracket
8.8th.
LeiterplatteCircuit board
9.9.
BefestigungsmittelFasteners
10.10.
LötstelleSolder joint
11.11.
Strebestrut

Claims (7)

  1. Antenna (1) for a vehicle, having a carrier, in particular a printed circuit board (8), wherein antenna structures for transmitting and/or receiving radiofrequency signals are arranged on the carrier, and wherein the antenna (1) has a plug connector (5) for connection to an electronic device, wherein the antenna (1) has a plastic half-shell (2) with an encircling frame (3) into which the carrier is inserted, wherein the plastic half-shell (2) is filled with a potting compound (4), wherein the plastic half-shell (2) has a mounting base (6), characterized in that a strut with a holder, in particular an angle holder (7), is additionally provided, wherein the holder is connected to the mounting base (6) by means of the strut.
  2. Antenna (1) according to Claim 1, wherein the carrier, in particular the printed circuit board (8), is secured to the plastic half-shell (2) by means of fastening means (9).
  3. Antenna (1) according to Claim 1 or 2, wherein the plastic half-shell (2) forms a plug connector housing of the plug connector (5).
  4. Antenna (1) according to one of the preceding claims, wherein the plug connector (5) is a FAKRA plug connector.
  5. Antenna (1) according to one of the preceding claims, wherein the potting compound (4) is a PU-based potting compound.
  6. Antenna (1) according to one of the preceding claims, wherein the potting compound (4) is an epoxy-based potting compound.
  7. Antenna (1) according to one of the preceding claims, wherein the potting compound (4) is a silicone-based potting compound.
EP15810734.2A 2014-12-18 2015-12-17 Water-tight lte antenna having pu potting Active EP3235057B1 (en)

Applications Claiming Priority (2)

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DE102014119059 2014-12-18
PCT/EP2015/080286 WO2016097182A1 (en) 2014-12-18 2015-12-17 Water-tight lte antenna having pu potting

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EP3235057A1 EP3235057A1 (en) 2017-10-25
EP3235057B1 true EP3235057B1 (en) 2021-03-10

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EP (1) EP3235057B1 (en)
CN (1) CN107004944A (en)
BR (1) BR112017007788B1 (en)
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WO (1) WO2016097182A1 (en)

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DE102019201029B3 (en) 2019-01-28 2020-04-23 Audi Ag Antenna holding device for a motor vehicle and motor vehicle with an antenna holding device

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EP3235057A1 (en) 2017-10-25
CN107004944A (en) 2017-08-01
WO2016097182A1 (en) 2016-06-23
DE102015225756A1 (en) 2016-06-23
BR112017007788B1 (en) 2023-02-14
US20170288302A1 (en) 2017-10-05
BR112017007788A2 (en) 2018-01-16

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