EP1318565B1 - Antenna, in particular a mobile radio telephone antenna, having a centering aid when being manufactured - Google Patents

Antenna, in particular a mobile radio telephone antenna, having a centering aid when being manufactured Download PDF

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Publication number
EP1318565B1
EP1318565B1 EP02023763A EP02023763A EP1318565B1 EP 1318565 B1 EP1318565 B1 EP 1318565B1 EP 02023763 A EP02023763 A EP 02023763A EP 02023763 A EP02023763 A EP 02023763A EP 1318565 B1 EP1318565 B1 EP 1318565B1
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EP
European Patent Office
Prior art keywords
antenna
base body
receiving means
sheath
mobile radio
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.)
Expired - Lifetime
Application number
EP02023763A
Other languages
German (de)
French (fr)
Other versions
EP1318565A1 (en
Inventor
Christian Joly
Tobias Kleinert
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.)
Hirschmann Electronics GmbH and Co KG
Hirschmann Electronics GmbH
Original Assignee
Hirschmann Electronics GmbH and Co KG
Hirschmann Electronics GmbH
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Publication of EP1318565A1 publication Critical patent/EP1318565A1/en
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Publication of EP1318565B1 publication Critical patent/EP1318565B1/en
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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
    • H01Q1/3275—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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49016—Antenna or wave energy "plumbing" making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49016—Antenna or wave energy "plumbing" making
    • Y10T29/49018—Antenna or wave energy "plumbing" making with other electrical component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49174—Assembling terminal to elongated conductor
    • Y10T29/49176—Assembling terminal to elongated conductor with molding of electrically insulating material

Definitions

  • the invention relates to a method for producing an antenna and to an antenna, in particular a mobile radio antenna for vehicles, according to the features of the respective preamble of the independent claims.
  • Such antennas in particular mobile radio antennas for vehicles, are known. These have a metal base body, which is provided on the one hand with receiving means, in particular with an antenna coil or an antenna rod, and on the other hand has a contact area with which the antenna is inserted or screwed into a corresponding contact area in the vehicle.
  • the receiving means are elastic, so that on the one hand there is no risk of accident and on the other hand, the antenna can give in to the wind forces acting during operation.
  • the antenna is still surrounded by an electrically non-conductive sheath to protect the metal parts in the interior against corrosion and to achieve a more pleasing overall appearance.
  • the base body is used with the receiving means in a mold and then the mold is filled with the sheath forming mass.
  • This is, for example, a thermoplastic elastomer.
  • the base body and / or the receiving means are arranged centered in the mold; but arise after production of the sheath and removing the pins in the sheath holes through which moisture can penetrate into the interior of the antenna, which in turn leads to corrosion and thus malfunction of the antenna.
  • This mobile radio antenna has a base body without bore, which is provided with receiving means.
  • the main body and the receiving means are surrounded by a sheath.
  • the invention is therefore based on the object of specifying both a method for producing an antenna and an antenna itself, wherein the disadvantages described above are avoided.
  • a method for producing an antenna with the features of claim 1 is provided.
  • this centering pin which is aligned exactly on the center and the longitudinal axis of the mold, it is also ensured that the basic body is arranged exactly in the center of the mold.
  • the centering pin and the base body are thus aligned with each other.
  • the centering pin inserted into the bore ensures that both the base and the receiving means are centered along the longitudinal axis of the die, so that these two components, after which they enter the Form are completely surrounded with the mass that forms the sheath.
  • the base body and the receiving means are then surrounded by the sheathing without disturbing openings remaining.
  • the base body and the receiving means may be two or more individual components, which are joined together in a corresponding manner.
  • the main body can be designed in several parts. It would also be conceivable to have a single (one-piece) component which offers the function of both, in which case also the base body is receiving means, i. that results in combination of basic body with the antenna coil, the spring or the like, the entire antenna.
  • the receiving means are aligned in the form.
  • the receiving means are designed as antenna helix (spring), which have a bore-like central region.
  • the diameter of the bore in the base body and the diameter in the receiving means almost coincide and correspond to the outer diameter of the centering pin. The tighter the tolerances, the better the centered alignment of the base body and receiving means in the mold.
  • FIG. 1 shows approximately in the middle in FIG. 1A a basic body 1 for an antenna, which consists of metal and can be turned, for example, from a semifinished product.
  • this main body 1 has a contact region 2, which is designed, for example, as a screw thread (alternatively also as a bayonet or the like) with which the finished antenna is screwed into a corresponding contact region in the vehicle.
  • the base body 1 On the side facing away from the contact region 2, the base body 1 has a receiving region 3, which receives receiving means such as an antenna coil.
  • an intermediate region 4 is present, which is formed for example as a polygon, to produce a certain protection against rotation between the body and the subsequent sheathing.
  • FIG. 1B the main body 1 is shown in section B-B corresponding to FIG. 1A.
  • the base body 1 has a bore 5 at least in the contact region 2, but also continuously.
  • a blind hole 6 is arranged for receiving the receiving means, which has a larger diameter than the bore. 5
  • the base body 1 is shown as viewed in the direction of the receiving area 3, wherein in particular the bore 5 and the polygon (in particular hexagon) of the intermediate area 4 can be seen.
  • FIGS. 2 A to 2 C the method for producing the antenna is shown from top to bottom. After the base body 1 has been produced and, for example, an antenna coil 7 has also been produced, this antenna coil 7 is fixed in the blind hole 6 of the base body 1. This can be done for example by a press fit or by soldering, welding, gluing or other compounds.
  • FIG. 2 B it is shown that the assembly of body 1 and antenna coil 7 (Figure 2 A) are inserted into a mold 8. This is done in such a way that the base body 1 is at least used with its contact area 2 in a closure piece 9, in particular screwed.
  • This closure member 9 has thus fixedly connected to a centering pin 10, wherein the closure member 9 is inserted and fixed with its centering pin 10 in the mold 8 such that the centering pin is aligned centrally and along the longitudinal axis of the mold 8.
  • the centering pin 10 extends both through the bore 5 of the base body and at least partially, but essentially over the entire length of the antenna coil 7. This contributes to an improved centering of the antenna coil 7 at, in particular, if this is also not exactly aligned in the longitudinal direction.
  • the free area of the mold 8 is filled with a mass, in particular ejected.
  • This elastic mass may be, for example, a thermoplastic elastomer (TPE).
  • TPE thermoplastic elastomer
  • the antenna can be taken out of the mold 8, either by the closure piece 9 is pulled out of the mold 8 or the antenna is taken out of the closure piece 9, so that the finished antenna is accessible, in both cases
  • Form 8 consists of two halves, which are separated from each other.
  • FIG. 2C shows the finished antenna 11, in which it can be seen that the base body 1 (with the exception of its contact region 2) including the antenna coil 7 is completely surrounded by the casing 12, without parts of the base body 1 or the antenna coil 7 being the casing 12 (with the exception of the contact area 2) pierced.
  • the antenna coil 7 is aligned exactly to the longitudinal axis of the finished antenna 11. After attaching the finished antenna 11 to the vehicle, there are no more metallic areas that can come into contact with the environment.

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

Abstract

The antenna has a base body for accommodating a receiving arrangement, especially an antenna coil, enclosed by a casing. The base body has an optionally shaped hole, e.g. a bore, whereby at least the base body is aligned by a defined shape centering pin for central insertion into the hole. The receiving arrangement can also be centered using the centering pin. <??>An Independent claim is also included for a method of manufacturing an inventive device.

Description

Die Erfindung betrifft ein Verfahren zur Herstellung einer Antenne sowie eine Antenne, insbesondere einer Mobilfunkantenne für Fahrzeuge, gemäß den Merkmalen des jeweiligen Oberbegriffes der unabhängigen Patentansprüche.The invention relates to a method for producing an antenna and to an antenna, in particular a mobile radio antenna for vehicles, according to the features of the respective preamble of the independent claims.

Solche Antennen, insbesondere Mobilfunkantennen für Fahrzeuge, sind bekannt. Diese weisen einen metallenen Grundkörper auf, der einerseits mit Empfangsmitteln, insbesondere mit einem Antennenwendel oder einer Antennenrute, versehen ist und andererseits einen Kontaktbereich aufweist, mit dem die Antenne in einen korrespondierenden Kontaktbereich im Fahrzeug eingesteckt oder eingeschraubt wird. Die Empfangsmittel sind elastisch ausgebildet, so dass einerseits keine Unfallgefahr besteht und andererseits die Antenne den im Betrieb wirkenden Windkräften nachgeben kann. Zusätzlich ist die Antenne noch mit einer elektrisch nicht leitenden Ummantelung umgeben, um die metallenen Teile im Inneren vor Korrosion zu schützen und ein insgesamt gefälligeres Erscheinungsbild zu erzielen.Such antennas, in particular mobile radio antennas for vehicles, are known. These have a metal base body, which is provided on the one hand with receiving means, in particular with an antenna coil or an antenna rod, and on the other hand has a contact area with which the antenna is inserted or screwed into a corresponding contact area in the vehicle. The receiving means are elastic, so that on the one hand there is no risk of accident and on the other hand, the antenna can give in to the wind forces acting during operation. In addition, the antenna is still surrounded by an electrically non-conductive sheath to protect the metal parts in the interior against corrosion and to achieve a more pleasing overall appearance.

Bei der Herstellung der Ummantelung ist es bekannt, dass der Grundkörper mit den Empfangsmitteln in eine Form eingesetzt wird und anschließend die Form mit der die Ummantelung bildende Masse ausgefüllt wird. Hierbei handelt es sich beispielsweise um ein thermoplastisches Elastomer. Bei dieser Vorgehensweise kann es passieren, dass der Grundkörper und/oder die Empfangsmittel nicht zentriert in der Form angeordnet sind, so dass Teilbereiche von beiden nicht vollständig mit der Masse der Ummantelung umgeben werden können. Um dieses Problem zu beseitigen, ist schon vorgeschlagen worden, den Grundkörper und/oder die Empfangsmittel mit in Richtung der Längsachse der Empfangsmittel reichende Stifte in der Form festzulegen. Damit wird zwar das Ziel erreicht, dass der Grundkörper und/oder die Empfangsmittel zentriert in der Form angeordnet sind; dabei entstehen aber nach Herstellung der Ummantelung und Entfernen der Stifte in der Ummantelung Löcher, über die Feuchtigkeit in das Innere der Antenne eindringen kann, die wiederum zur Korrosion und damit zu Funktionsstörungen der Antenne führt.In the production of the sheath, it is known that the base body is used with the receiving means in a mold and then the mold is filled with the sheath forming mass. This is, for example, a thermoplastic elastomer. In this procedure, it may happen that the base body and / or the receiving means are not centered in the mold, so that portions of both can not be completely surrounded by the mass of the sheath. To overcome this problem, it has already been proposed to fix the base body and / or the receiving means with in the direction of the longitudinal axis of the receiving means reaching pins in the form. Thus, although the goal is achieved that the base body and / or the receiving means are arranged centered in the mold; but arise after production of the sheath and removing the pins in the sheath holes through which moisture can penetrate into the interior of the antenna, which in turn leads to corrosion and thus malfunction of the antenna.

Aus der US 6,271,804 ist ein Verfahren zur Herstellung einer Mobilfunkantenne für Fahrzeuge sowie eine entsprechende Mobilfunkantenne bekannt. Diese Mobilfunkantenne weist einen Grundkörper ohne Bohrung auf, der mit Empfangsmittel versehen ist. Der Grundkörper und die Empfangsmittel sind von einer Ummantelung umgeben.From US 6,271,804 a method for producing a mobile radio antenna for vehicles and a corresponding mobile radio antenna is known. This mobile radio antenna has a base body without bore, which is provided with receiving means. The main body and the receiving means are surrounded by a sheath.

Aus der US 6,137,452 ist eine Antenne für ein Mobiltelefon bekannt, bei der ein Grundkörper auf einem Stab angeordnet ist. Dieses Gebilde aus Stab und Grundkörper wird in zwei Formhälften eingelegt und mit einem elektrisch nicht leitfähigen Material umspritzt, so dass ein einteiliger Grundkörper aus Kunststoff entsteht, der an seinem einen Ende ein Gewinde aufweist. Nach der Herstellung dieses einteiligen Grundkörpers werden spiralförmige Nuten mit einem elektrisch leitfähigen Material beschichtet und anschließend eine separate Ummantelung aufgebracht.From US 6,137,452 an antenna for a mobile phone is known in which a base body is arranged on a rod. This structure of rod and body is placed in two mold halves and molded with an electrically non-conductive material, so that a one-piece body made of plastic, which has a thread at one end. After the preparation of this one-piece body spiral grooves are coated with an electrically conductive material and then applied a separate sheath.

Der Erfindung liegt daher die Aufgabe zugrunde, sowohl ein Verfahren zur Herstellung einer Antenne als auch eine Antenne selber anzugeben, wobei die eingangs geschilderten Nachteile vermieden werden.The invention is therefore based on the object of specifying both a method for producing an antenna and an antenna itself, wherein the disadvantages described above are avoided.

Diese Aufgabe ist durch die Merkmale der jeweiligen unabhängigen Patentansprüche gelöst.This object is solved by the features of the respective independent claims.

Erfindungsgemäß ist ein Verfahren zur Herstellung einer Antenne mit den Merkmalen des Patentanspruches 1 vorgesehen. Durch diesen Zentrierstift, der exakt auf der Mitte und der Längsachse der Form ausgerichtet ist, wird auch gewährleistet, dass der Grundkörper exakt mittig in der Form angeordnet wird. Der Zentrierstift und der Grundkörper sind somit zueinander fluchtend ausgerichtet. Wurden die Empfangsmittel ebenfalls fluchtend zu dem Grundkörper ausgerichtet und an diesem befestigt, wird durch den in die Bohrung eingeführten Zentrierstift gewährleistet, dass sowohl Grundkörper als auch Empfangsmittel mittig längs der Längsachse der Form ausgerichtet sind, so dass diese beiden Bauteile, nach dem sie in die Form eingesetzt worden sind, vollständig mit der Masse umgeben werden, die die Ummantelung bildet. Damit sind dann nach Entfernen der Form der Grundkörper und die Empfangsmittel mit der Ummantelung umgeben, ohne dass störende Öffnungen verbleiben. Durch eine Ummantelung des Grundkörpers an seiner Unterseite im Kontaktbereich kann auch sichergestellt werden, dass nach dem Einsetzen der Antenne keine Feuchtigkeit mehr in den Kontaktbereich eindringen kann. Dies wird insbesondere dann zuverlässig bewirkt, wenn der Kontaktbereich als Gewinde ausgeführt ist, so dass nach Anziehen der Schraubverbindung der untere radiale Bereich der Ummantelung leicht gequetscht wird und diesen Bereich gegen Feuchtigkeit abdichtet.According to the invention, a method for producing an antenna with the features of claim 1 is provided. By means of this centering pin, which is aligned exactly on the center and the longitudinal axis of the mold, it is also ensured that the basic body is arranged exactly in the center of the mold. The centering pin and the base body are thus aligned with each other. When the receiving means have also been aligned with and secured to the base, the centering pin inserted into the bore ensures that both the base and the receiving means are centered along the longitudinal axis of the die, so that these two components, after which they enter the Form are completely surrounded with the mass that forms the sheath. Thus, after removal of the mold, the base body and the receiving means are then surrounded by the sheathing without disturbing openings remaining. By sheathing the base body on its underside in the contact area, it can also be ensured that moisture can no longer penetrate into the contact area after the antenna has been inserted. This is reliably effected, in particular, when the contact region is designed as a thread, so that after tightening the screw connection, the lower radial region of the casing is slightly squeezed and seals this region against moisture.

Grundkörper und Empfangsmittel können zwei oder mehr einzelne Bauteile sein, die in entsprechender Weise zusammengefügt werden. Auch der Grundkörper kann mehrteilig ausgebildet sein. Vorstellbar wäre auch ein einzelnes (einstückiges) Bauteil, das die Funktion beider bietet, wobei also auch der Grundkörper Empfangsmittel ist, d.h. daß sich in Kombination von Grundkörper mit dem Antennenwendel, der Feder oder dergleichen die gesamte Antenne ergibt.The base body and the receiving means may be two or more individual components, which are joined together in a corresponding manner. Also, the main body can be designed in several parts. It would also be conceivable to have a single (one-piece) component which offers the function of both, in which case also the base body is receiving means, i. that results in combination of basic body with the antenna coil, the spring or the like, the entire antenna.

Weiterhin ist gemäß Patentanspruch 1 vorgesehen, dass mit dem Zentrierstift auch die Empfangsmittel zentriert in der Form ausgerichtet werden. Bei der ersten Variante ist es erforderlich, dass dann, wenn nur der Grundkörper selber zentriert in der Form ausgerichtet wird, schon die Empfangsmittel fluchtend zu dem Grundkörper ausgerichtet und an diesem befestigt sind. Dies bedingt unter Umständen eine präzise Fertigung von Grundkörper und Empfangsmittel, insbesondere in deren gemeinsamen Befestigungsbereich, so dass diese präzise Herstellung entfallen kann, wenn mit dem Zentrierstift auch die Empfangsmittel zentriert in der Form ausgerichtet werden. Dies läßt sich insbesondere dann einfach bewerkstelligen, wenn die Empfangsmittel als Antennenwendel (Feder) ausgebildet sind, die einen bohrungsähnlichen Mittelbereich aufweisen. Von besonderem Vorteil ist es, wenn der Durchmesser der Bohrung in dem Grundkörper und der Durchmesser in den Empfangsmitteln nahezu- übereinstimmen und mit dem Außendurchmesser des Zentrierstifteskorrespondieren. Je enger die Toleranzen sind, desto besser ist die zentrierte Ausrichtung von Grundkörper und Empfangsmitteln in der Form.Furthermore, it is provided according to claim 1 that centered with the centering the receiving means are aligned in the form. In the first variant, it is necessary that, if only the main body itself is centered in the form aligned, already the receiving means are aligned with the base body and fixed thereto. Under certain circumstances, this necessitates a precise production of base body and receiving means, in particular in their common fastening region, so that this precise production can be omitted if the centering pin also centers the receiving means in the mold. This can be accomplished in particular simply when the receiving means are designed as antenna helix (spring), which have a bore-like central region. It is particularly advantageous if the diameter of the bore in the base body and the diameter in the receiving means almost coincide and correspond to the outer diameter of the centering pin. The tighter the tolerances, the better the centered alignment of the base body and receiving means in the mold.

Weitere vorteilhafte Verfahrensschritte sowie Ausgestaltungen einer Antenne sind in den weiteren Patentansprüchen angegeben.Further advantageous method steps and embodiments of an antenna are specified in the further claims.

Ein Ausführungsbeispiel einer erfindungsgemäßen Antenne sowie eines erfindunggemäßen Verfahrens zur Herstellung der Antenne sind im folgenden beschrieben und anhand der Figuren erläutert, wobei die Erfindung jedoch nicht auf dieses Ausführungsbeispiel beschränkt ist.An embodiment of an antenna according to the invention and a method according to the invention for producing the antenna are described below and explained with reference to the figures, but the invention is not limited to this embodiment.

Es zeigen:

Figur 1:
Einen Grundkörper einer Antenne in verschiedenen Ansichten,
Figur 2:
Die Verfahrensschritte zur Herstellung einer Antenne.
Show it:
FIG. 1:
A main body of an antenna in different views,
FIG. 2:
The method steps for producing an antenna.

Figur 1 zeigt in etwa in der Mitte in Figur 1A einen Grundkörper 1 für eine Antenne, der aus Metall besteht und beispielsweise aus einem Halbzeug gedreht werden kann. Dieser Grundkörper 1 weist einerseits einen Kontaktbereich 2 auf, der beispielsweise als Schraubgewinde (alternativ auch als Bajonett oder dergleichen) ausgebildet ist, mit dem die fertige Antenne in einen korrespondierenden Kontaktbereich im Fahrzeug eingeschraubt wird. Auf der dem Kontaktbereich 2 abgewandten Seite weist der Grundkörper 1 einen Aufnahmebereich 3 auf, der Empfangsmittel wie ein Antennenwendel aufnimmt. Zwischen den beiden Bereichen 2 und 3 ist ein Zwischenbereich 4 vorhanden, der beispielsweise als Mehrkant ausgebildet ist, um einen gewissen Verdrehschutz zwischen dem Grundkörper und der späteren Ummantelung herzustellen.FIG. 1 shows approximately in the middle in FIG. 1A a basic body 1 for an antenna, which consists of metal and can be turned, for example, from a semifinished product. On the one hand, this main body 1 has a contact region 2, which is designed, for example, as a screw thread (alternatively also as a bayonet or the like) with which the finished antenna is screwed into a corresponding contact region in the vehicle. On the side facing away from the contact region 2, the base body 1 has a receiving region 3, which receives receiving means such as an antenna coil. Between the two areas 2 and 3, an intermediate region 4 is present, which is formed for example as a polygon, to produce a certain protection against rotation between the body and the subsequent sheathing.

In Figur 1 B (unterer Bereich) ist der Grundkörper 1 im Schnitt B-B entsprechend Figur 1 A dargestellt. Hier ist zu erkennen, dass der Grundkörper 1 zumindest im Kontaktbereich 2, aber auch durchgehend, eine Bohrung 5 aufweist. Im Aufnahmebereich 3 ist zur Aufnahme der Empfangsmittel beispielsweise noch ein Sackloch 6 angeordnet, das einen größeren Durchmesser aufweist als die Bohrung 5.In FIG. 1B (lower area), the main body 1 is shown in section B-B corresponding to FIG. 1A. Here it can be seen that the base body 1 has a bore 5 at least in the contact region 2, but also continuously. In the receiving area 3, for example, a blind hole 6 is arranged for receiving the receiving means, which has a larger diameter than the bore. 5

In Figur 1 C (oben) ist der Grundkörper 1 bei Betrachtung in Richtung des Aufnahmebereiches 3 gezeigt, wobei insbesondere die Bohrung 5 und der Mehrkant (insbesondere Sechskant) des Zwischenbereiches 4 erkennbar ist.In FIG. 1C (top), the base body 1 is shown as viewed in the direction of the receiving area 3, wherein in particular the bore 5 and the polygon (in particular hexagon) of the intermediate area 4 can be seen.

In den Figuren 2 A bis 2 C ist von oben nach unten das Verfahren zur Herstellung der Antenne gezeigt. Nachdem der Grundkörper 1 gefertigt wurde und beispielsweise auch ein Antennenwendel 7 hergestellt wurde, wird dieser Antennenwendel 7 in dem Sackloch 6 des Grundkörpers 1 festgelegt. Dies kann beispielsweise durch eine Presspassung oder auch durch Verlöten, Verschweißen, Verkleben oder andere Stoffverbindungen erfolgen.In FIGS. 2 A to 2 C, the method for producing the antenna is shown from top to bottom. After the base body 1 has been produced and, for example, an antenna coil 7 has also been produced, this antenna coil 7 is fixed in the blind hole 6 of the base body 1. This can be done for example by a press fit or by soldering, welding, gluing or other compounds.

In Figur 2 B ist gezeigt, dass die Baueinheit aus Grundkörper 1 und Antennenwendel 7 (Figur 2 A) in eine Form 8 eingelegt sind. Dies geschieht in der Weise, dass der Grundkörper 1 zumindest mit seinem Kontaktbereich 2 in ein Verschlußstück 9 eingesetzt, insbesondere eingeschraubt wird. Dieses Verschlußstück 9 weist damit fest verbunden einen Zentrierstift 10 auf, wobei das Verschlußstück 9 mit seinem Zentrierstift 10 derart in die Form 8 eingesetzt und festgelegt wird, dass der Zentrierstift mittig und längs der Längsachse der Form 8 ausgerichtet ist. Durch diese exakte Ausrichtung des Zentrierstiftes 10 in der Form 8 wird gewährleistet, dass auch der Grundkörper 1 exakt mittig und zentriert in der Form 8 festgelegt wird. Bei der Ausführung, die in Figur 2 B gezeigt ist, erstreckt sich der Zentrierstift 10 sowohl durch die Bohrung 5 des Grundkörpers als auch zumindest teilweise, im wesentlichen aber über die gesamte Länge des Antennenwendels 7. Dies trägt zu einer verbesserten Zentrierung auch des Antennenwendels 7 bei, insbesondere dann, wenn dieses ebenfalls nicht exakt in Längsrichtung ausgerichtet ist. Nach dieser Vorbereitung wird der freie Bereich der Form 8 mit einer Masse ausgefüllt, insbesondere ausgespritzt. Bei dieser elastischen Masse kann es sich beispielsweise um einen thermoplastischen Elastomer (TPE) handeln. Nach Verfestigung dieser Masse kann die Antenne aus der Form 8 genommen werden, entweder dadurch, dass das Verschlußstück 9 aus der Form 8 herausgezogen wird oder die Antenne aus dem Verschlußstück 9 herausgenommen wird, so dass die fertige Antenne zugänglich ist, wobei in beiden Fällen die Form 8 aus zwei Hälften besteht, die voneinander getrennt werden.In Figure 2 B it is shown that the assembly of body 1 and antenna coil 7 (Figure 2 A) are inserted into a mold 8. This is done in such a way that the base body 1 is at least used with its contact area 2 in a closure piece 9, in particular screwed. This closure member 9 has thus fixedly connected to a centering pin 10, wherein the closure member 9 is inserted and fixed with its centering pin 10 in the mold 8 such that the centering pin is aligned centrally and along the longitudinal axis of the mold 8. By this exact alignment of the centering pin 10 in the mold 8 ensures that the base body 1 is set exactly centered and centered in the mold 8. In the embodiment shown in FIG. 2 B, the centering pin 10 extends both through the bore 5 of the base body and at least partially, but essentially over the entire length of the antenna coil 7. This contributes to an improved centering of the antenna coil 7 at, in particular, if this is also not exactly aligned in the longitudinal direction. After this preparation, the free area of the mold 8 is filled with a mass, in particular ejected. This elastic mass may be, for example, a thermoplastic elastomer (TPE). After solidification of this mass, the antenna can be taken out of the mold 8, either by the closure piece 9 is pulled out of the mold 8 or the antenna is taken out of the closure piece 9, so that the finished antenna is accessible, in both cases Form 8 consists of two halves, which are separated from each other.

Figur 2 C zeigt schließlich die fertige Antenne 11, bei der erkennbar ist, dass der Grundkörper 1 (mit Ausnahme seines Kontaktbereiches 2) einschließlich des Antennenwendels 7 vollständig von der Ummantelung 12 umgeben ist, ohne dass Teile des Grundkörpers 1 oder des Antennenwendels 7 die Ummantelung 12 (mit Ausnahme des Kontaktbereiches 2) durchstoßen. Der Antennenwendel 7 ist exakt zu der Längsachse der fertigen Antenne 11 ausgerichtet. Nach dem Anbringen der fertigen Antenne 11 an dem Fahrzeug gibt es keine metallischen Bereiche mehr, die mit der Umgebung in Verbindung kommen können.Finally, FIG. 2C shows the finished antenna 11, in which it can be seen that the base body 1 (with the exception of its contact region 2) including the antenna coil 7 is completely surrounded by the casing 12, without parts of the base body 1 or the antenna coil 7 being the casing 12 (with the exception of the contact area 2) pierced. The antenna coil 7 is aligned exactly to the longitudinal axis of the finished antenna 11. After attaching the finished antenna 11 to the vehicle, there are no more metallic areas that can come into contact with the environment.

Claims (3)

  1. Method for production of a mobile radio antenna for vehicles, with the antenna having a base body as well as receiving means, in particular an antenna helix, which are surrounded by a sheath, with a base body being produced and being connected to the receiving means, characterized in that the base body is provided with a hole, for example a bore, which has any desired shape and passes through the base body over its entire length, with the base body and the receiving means being aligned centred in a mould, by means of a centring pin which can be fixed in the mould and is inserted through the hole in the base body, and in that the centring pin is pulled out of the base body in the direction facing away from the sheath once the sheath has been applied.
  2. Method according to Claim 1, characterized in that once it has been provided with the receiving means; the base body is inserted with a closure piece into the mould, and the mould is then filled with the compound which forms the sheath.
  3. Mobile radio antenna (11) for vehicles, with the antenna (11) having a base body (1) for holding receiving means, in particular an antenna helix (7), which are surrounded by a sheath (12), with the sheath (12) completely and integrally surrounding the receiving means as well as the base body (1) except for the contact area (2), characterized in that the base body (1) is produced from a metal and has a hole (5), which extends over the entire length of the base body (1), for centring during production of the antenna (11).
EP02023763A 2001-12-07 2002-10-24 Antenna, in particular a mobile radio telephone antenna, having a centering aid when being manufactured Expired - Lifetime EP1318565B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10160253 2001-12-07
DE10160253 2001-12-07

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EP1318565A1 EP1318565A1 (en) 2003-06-11
EP1318565B1 true EP1318565B1 (en) 2006-05-03

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EP (1) EP1318565B1 (en)
AT (1) ATE325437T1 (en)
DE (1) DE50206639D1 (en)

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KR100677428B1 (en) * 2005-01-29 2007-02-02 엘지전자 주식회사 Mobile communication termina
EP1750327A3 (en) * 2005-08-01 2007-03-14 Hirschmann Car Communication GmbH rod antenna, especially a mobile radio telephone antenna for vehicles
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DE102006035781A1 (en) * 2006-08-01 2008-02-07 Hirschmann Car Communication Gmbh Antenna, in particular mobile antenna for vehicles
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CN110325339B (en) * 2017-01-04 2022-02-25 莱尔德技术股份有限公司 Molded design for helical antenna

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Publication number Publication date
US7017256B2 (en) 2006-03-28
EP1318565A1 (en) 2003-06-11
US20030145452A1 (en) 2003-08-07
ATE325437T1 (en) 2006-06-15
DE50206639D1 (en) 2006-06-08

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