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EP1067442B2 - Radio wristwatch - Google Patents

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Publication number
EP1067442B2
EP1067442B2 EP00111766A EP00111766A EP1067442B2 EP 1067442 B2 EP1067442 B2 EP 1067442B2 EP 00111766 A EP00111766 A EP 00111766A EP 00111766 A EP00111766 A EP 00111766A EP 1067442 B2 EP1067442 B2 EP 1067442B2
Authority
EP
European Patent Office
Prior art keywords
case
radio
controlled wristwatch
wristwatch according
aerial
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
EP00111766A
Other languages
German (de)
French (fr)
Other versions
EP1067442A3 (en
EP1067442B1 (en
EP1067442A2 (en
Inventor
Günter Megner
Rüdiger Daut
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.)
Junghans Uhren GmbH
Original Assignee
Junghans Uhren GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Application filed by Junghans Uhren GmbH filed Critical Junghans Uhren GmbH
Publication of EP1067442A2 publication Critical patent/EP1067442A2/en
Publication of EP1067442A3 publication Critical patent/EP1067442A3/en
Publication of EP1067442B1 publication Critical patent/EP1067442B1/en
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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G21/00—Input or output devices integrated in time-pieces
    • G04G21/04—Input or output devices integrated in time-pieces using radio waves
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B37/00—Cases
    • G04B37/0008—Cases for pocket watches and wrist watches
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B39/00—Watch crystals; Fastening or sealing of crystals; Clock glasses
    • G—PHYSICS
    • G04—HOROLOGY
    • G04R—RADIO-CONTROLLED TIME-PIECES
    • G04R60/00—Constructional details
    • G04R60/06—Antennas attached to or integrated in clock or watch bodies
    • G04R60/10—Antennas attached to or integrated in clock or watch bodies inside cases
    • G04R60/12—Antennas attached to or integrated in clock or watch bodies inside cases inside metal cases
    • 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
    • H01Q1/273—Adaptation for carrying or wearing by persons or animals

Definitions

  • the invention relates to a radio wristwatch.
  • a radio-controlled wristwatch as used in the EP 0 896 262A1 or the DE 93 15 670.7 has been proven in practice. It is characterized by an exceptionally compact design of its work, as the following - integrated from lamellae flexible ferrite rod antenna of the housing inner contour following in the circuit board with the processor for the electronic receiving, decoding and clock circuits is integrated.
  • such a structure requires a non-metallic watch case, because otherwise would be affected by the proximity of the metal, the antenna function not only as a result of mismatch but also as a result of not tunable compensating quality losses to inoperability.
  • the magnetic longwave antenna can be moved to receive the coded time information to the outside of the watch case, in the case of a wristwatch so in the bracelet inside, such as in the EP 0 439 724 B2 described in more detail.
  • a solution has become standard for almost a decade.
  • it has the fundamental disadvantages that both the bracelet stop on the watch case (due to the requirement of flexible introduction of the antenna line) as well as the bracelet itself (because of the flexible but not negligible foreign body in the form of laminated ferrite antenna in the tubular bracelet) due to wear very susceptible to wear and thus prone to failure.
  • the magnetic long-wave antenna may also be fixedly attached to the bottom cover.
  • the object of the invention is to present a radio wristwatch, which is less susceptible to interference.
  • the invention is generally based on a radio alarm, which has the generic features of the preamble of claim 1. To solve the above problem, a radio wristwatch with the features of the claim is looked.
  • this long-wave magnetic antenna is arranged on the circuit board at the edge of the movement, to ensure the all-round radial distance from the antenna core to the inner wall of the electrically conductive housing middle portion expediently in the housing middle part of a plastic Injected spacer ring inserted, which in turn serves in the center as a receiving ring for the factory equipped with the ferrite rod.
  • this does not need the known design for the positive nestling of the ends of the longest possible rod in the corresponding recessed inner periphery of the spacer ring.
  • the non-metallic bottom of the watch case may be made of plastic. It is more convenient, as on the visible side of the watch glass and back to insert a bottom glass. Because the glass surface resting against the wrist proves to be extraordinarily skin-friendly and completely non-allergenic to the skin; and if no insight into the work in the manner of a skeleton watch is desired, the inside of the floor glass can be metallized metallically and thus made opaque.
  • the floor plan can be ornamented, for example by means of figurative stencils; or the precipitate is then processed by laser erosion (which causes traces of black burned in the precipitation and can also subsequently be done from the outside through the glass of the already assembled soil) figuratively.
  • FIGURE of the drawing shows in axial longitudinal section the construction according to the invention of a radio-controlled wristwatch with a magnetic long-wave antenna integrated into a metallic watch case for receiving coded time information.
  • the outlined in the drawing in Achsial longitudinal section radio wristwatch 11 has a housing 12 with a middle part 13 of electrically conductive material. It may be about a non-metallic injection-molded part with a metallic coating, but preferably a solid but yet radially thin stainless steel or titanium ring. This causes a shield against interference, which can otherwise be coupled from a laterally connected metal links bracelet for recorded in the wristwatch housing radio clock antenna out. If the middle part 13 is not integrally formed with a glass rim 14 and / or a bottom ring 15, but this as outlines as specially made applications The housing middle part 13 are added, they may be made of other - possibly also conductive - material than the preferred steel middle part 13. In the case of electrically conductive rings 14, 15, however, they should project radially as far as possible substantially beyond the middle part 13 to the center of the wristwatch housing 12.
  • the ground 16 which has been inserted into the housing 12, is a rigid plate of electrically non-conductive material, in particular of ceramic or glass. The latter can wear towards the housing interior a coating 17 which is configured through the glass bottom 16 through decorative or informative. Opposite the watch glass 18 is installed in a conventional manner by means of a sealing ring 19 in the housing 12.
  • a spacer ring 20 is disposed of electrically non-conductive material, in particular plastic injection molding, which extends substantially further than the rings 14, 15 from the central part 13 to the center of the housing 12 out.
  • the ring 20 may be integral with an arena-like dial ring 21, or the latter is made separately from other material and as sketched applied to the visible end of the spacer ring 20.
  • the ring 20 may be provided with radial bores for receiving sleeves, in which the housing center part 13 penetrating ram are performed to operate switching operations in radio movement 22 waterproof.
  • the held in the housing 12 spacer ring 20 is used directly and / or by means of his dial ring 21 as a work ring, so for holding the movement 22 in the housing 12.
  • the edge of the visible side resting on the movement 22, consisting of electrically non-conductive material dial 23 is from the dial ring 21 radially overlapped and thus concealed on the visible side.
  • the movement consists essentially of a gear train 24 for the movement of hands 25 and an electronic block 26 on the one hand the drive control and on the other hand, the reception and decoding of the encoded time information for periodic control and, if necessary, correction of the pointer position.
  • the electronics block 26 includes a long-wave receiver 27, which is fixed to a time transmitter such as the one that is in Germany the legal time spread (DCF 77), is tuned.
  • the receiver 27 is connected to a long wave magnetic antenna 28 in the form of a coil 30 penetrated by a ferrite core 29, as shown symbolically in the drawing sketch.
  • the antenna 28 were arranged in the immediate vicinity of the metal housing 12, then, as already mentioned, not only a (basically compensable) resonance detuning would occur, but in particular also such a (non-compensatable) degradation, that with useful reception ratios even with very sensitive receiver 27 can no longer be expected. Therefore, it is ensured by interposition of the spacer ring 20 between the metal watch case 12 and equipped with the antenna 28 clockwork 22 that the ferrite core 29 maintains a sufficient radial distance from the interior of the metal housing 12, the inner wall so compared to the center of the watch case 12 out is. Measured in the mounting plane of the core 29, the width of the spacer ring 20 is typically on the order of 20% to 30% of the inner diameter of the wristwatch housing 12th
  • the antenna core 29 may be laminated, but at a sufficient distance from the rotating metal watch case 12 but also satisfies an inflexible prismatic, about cylindrical rod. It may be mounted radially, as symbolically sketched, with respect to the center of the watch case 12 on the circuit board of the electronics block 26; or he is, depending on the space requirements for the other electrical components, compared to the outlined representation by 90 ° out of the plane pivoted out as a secant near the outer periphery of the movement 22.
  • the magnetic long-wave antenna 28 for receiving the time information to be decoded not to have to move outside of the housing 12 as in particular in a bracelet that is at least the invention Housing middle part 13 formed as a thin solid or coated electrically conductive ring, within which a spacer ring 20 of electrically non-conductive material, the movement 22 with its edge sekantial arranged elongated prismatic antenna core 29 between two discs of electrically non-conductive material , namely the watch glass 18 and the housing bottom 16, at a radial distance to the metal middle part 13, wherein the bottom 16 is preferably a housing interior toward decorative or informative coated glass plate.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Selective Calling Equipment (AREA)
  • Electromechanical Clocks (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Dental Preparations (AREA)
  • Toys (AREA)

Abstract

A radio-controlled wristwatch includes a casing. A central portion of the casing disposed generally centrally with reference to a longitudinal center axis of the casing is formed of metal at least on the exterior thereof. An antenna core is disposed within a chamber defined by the casing. The antenna core lies on a plane oriented transversely with respect to the longitudinal axis. A spacer ring is disposed in the chamber between the central portion and the antenna core, the spacer ring formed of electrically non-conductive material.

Description

Die Erfindung betrifft eine Funkarmbanduhr.The invention relates to a radio wristwatch.

Eine Funkarmbanduhr, wie sie etwa in der EP 0 896 262A1 oder der DE 93 15 670.7 beschrieben ist, hat sich in der Praxis bewährt. Sie zeichnet sich durch außergewöhnlich kompakten Aufbau ihres Werkes aus, wie die - dort aus Lamellen geschichtete flexible Ferritstab-Antenne der Gehäuse-Innenkontur folgend in die Leiterplatte mit dem Prozessor für die elektronischen Empfangs-, Dekodierungs- und Uhrenschaltungen integriert ist. Allerdings bedingt ein derartiger Aufbau ein nicht-metallisches Uhrgehäuse, weil andernfalls durch die Nähe des Metalls die Antennenfunktion nicht nur infolge einer Fehlabstimmung sondern insbesondere auch infolge nicht über Nachstimmung kompensierbarer Güteverluste bis zur Funktionsunfähigkeit beeinträchtigt werden würde.A radio-controlled wristwatch, as used in the EP 0 896 262A1 or the DE 93 15 670.7 has been proven in practice. It is characterized by an exceptionally compact design of its work, as the following - integrated from lamellae flexible ferrite rod antenna of the housing inner contour following in the circuit board with the processor for the electronic receiving, decoding and clock circuits is integrated. However, such a structure requires a non-metallic watch case, because otherwise would be affected by the proximity of the metal, the antenna function not only as a result of mismatch but also as a result of not tunable compensating quality losses to inoperability.

Wenn dagegen aus gestalterischen Gründen ein metallenes Uhrgehäuse gewünscht wird, kann die magnetische Langwellenantenne zum Empfang der kodierten Zeitinformation nach außerhalb des Uhrgehäuses verlegt werden, im Falle einer Armbanduhr also in das Armband hinein, wie etwa in der EP 0 439 724 B2 näher beschrieben. Eine solche Lösung hat sich seit fast einem Jahrzehnt zum Standard entwickelt. Sie weist aber die grundsätzlichen Nachteile auf, dass sowohl der Armbandanschlag an das Uhrgehäuse (wegen des Erfordernisses einer flexiblen Einführung der Antennenleitung) wie auch das Armband selbst (wegen des zwar flexiblen aber doch nicht vernachlässigbaren Fremdkörpers in Form der lamellierten Ferritantenne im schlauchförmigen Armband) tragebedingt sehr verschleißgefährdet und damit störanfällig sind.If, on the other hand, a metallic watch case is desired for design reasons, the magnetic longwave antenna can be moved to receive the coded time information to the outside of the watch case, in the case of a wristwatch so in the bracelet inside, such as in the EP 0 439 724 B2 described in more detail. Such a solution has become standard for almost a decade. However, it has the fundamental disadvantages that both the bracelet stop on the watch case (due to the requirement of flexible introduction of the antenna line) as well as the bracelet itself (because of the flexible but not negligible foreign body in the form of laminated ferrite antenna in the tubular bracelet) due to wear very susceptible to wear and thus prone to failure.

Bei Funkarmbanduhren mit metallenem Mittelteil, wie sie beispielsweise der Druckschrift DE 296 07 866 U1 zu entnehmen sind und von der die Erfindung ausgeht, kann die magnetische Langwellen-Antenne auch fest an dem Bodendeckel angebracht sein.In radio wristwatches with metal middle part, as for example the publication DE 296 07 866 U1 can be seen and from which the invention proceeds, the magnetic long-wave antenna may also be fixedly attached to the bottom cover.

Die Aufgabe der Erfindung besteht darin, eine Funkarmbanduhr vorzustellen, welche weniger störanfällig ist.The object of the invention is to present a radio wristwatch, which is less susceptible to interference.

Die Erfindung geht ganz allgemein von einer Funkarmbanduhr aus, welche die gattungsbildenden Merkmale des Oberbegriffs des Patentanspruch 1 aufweist. Zur Lösung der vorgenannten Aufgabe ist eine Funkarmbanduhr mit den Merkmalen des Anspruchs ausgesehen.The invention is generally based on a radio alarm, which has the generic features of the preamble of claim 1. To solve the above problem, a radio wristwatch with the features of the claim is looked.

Für den konstruktiv zu bevorzugenden Fall, dass diese magnetische Langwellenantenne auf der Leiterplatte am Rand des Uhrwerkes angeordnet ist, wird zur Gewährleistung des allseitigen radialen Abstandes vom Antennen-Kern zur Innenwandung des elektrisch leitenden Gehäuse-Mittelteils hin zweckmäßigerweise in das Gehäuse-Mittelteil ein aus Kunststoff gespritzter Distanzring eingelegt, der seinerseits im Zentrum als Aufnahmering für das mit dem Ferritstab bestückte Werk dient. Für den Ferritstab braucht hierbei nicht die bekannte Ausführung zum formschlüssigen Einschmiegen der Enden eines möglichst langen Stabes in die entsprechend ausgenommene Innenperipherie des Distanzringes.For the structurally preferable case that this long-wave magnetic antenna is arranged on the circuit board at the edge of the movement, to ensure the all-round radial distance from the antenna core to the inner wall of the electrically conductive housing middle portion expediently in the housing middle part of a plastic Injected spacer ring inserted, which in turn serves in the center as a receiving ring for the factory equipped with the ferrite rod. For the ferrite bar this does not need the known design for the positive nestling of the ends of the longest possible rod in the corresponding recessed inner periphery of the spacer ring.

Der nicht-metallische Boden des Uhrgehäuses kann aus Kunststoff bestehen. Zweckmäßiger ist es, wie auf der Sichtseite das Uhrglas auch rückwärtig ein Bodenglas einzusetzen. Denn die am Handgelenk anliegende Glasfläche erweist sich der Haut gegenüber als außerordentlich hautsympathisch und völlig allergiefrei; und wenn keine Einblickmöglichkeit ins Werk nach der Art einer Skelettuhr gewünscht wird, kann die Innenseite des Bodenglases metallisch bedampft und dadurch undurchsichtig gestaltet werden. Dabei kann im Zuge des Bedampfens die Bodenansicht ornamental gestaltet werden, etwa mittels figürlicher Schablonen; oder der Niederschlag wird anschließend durch Laser-Erodieren (das im Niederschlag schwarz verbrannte Bearbeitungsspuren hervorruft und auch nachträglich noch von außen durch das Glas des schon montierten Bodens hindurch erfolgen kann) figurativ bearbeitet.The non-metallic bottom of the watch case may be made of plastic. It is more convenient, as on the visible side of the watch glass and back to insert a bottom glass. Because the glass surface resting against the wrist proves to be extraordinarily skin-friendly and completely non-allergenic to the skin; and if no insight into the work in the manner of a skeleton watch is desired, the inside of the floor glass can be metallized metallically and thus made opaque. In the course of steaming, the floor plan can be ornamented, for example by means of figurative stencils; or the precipitate is then processed by laser erosion (which causes traces of black burned in the precipitation and can also subsequently be done from the outside through the glass of the already assembled soil) figuratively.

Zusätzliche Merkmale, Weiterbildungen und Vorteile der Erfindung ergeben sich aus den weiteren Ansprüchen und aus nachstehender Beschreibung eines in der Zeichnung unter Beschränkung auf das Wesentliche stark abstrahiert und nicht maßstabsgerecht skizzierten bevorzugten Realisierungsbeispiels zur erfindungsgemäßen Lösung. Die einzige Figur der Zeichnung zeigt im Achsial-Längsschnitt den erfindungsgemäßen Aufbau einer Funkarmbanduhr mit in ein metallisches Uhrgehäuse integrierter magnetischer Langwellenantenne für den Empfang kodierter Zeitinformationen.Additional features, developments and advantages of the invention will become apparent from the other claims and from the following description of the drawing in a limited to the essentials highly abstracted and not to scale outlined preferred implementation example of the inventive solution. The single FIGURE of the drawing shows in axial longitudinal section the construction according to the invention of a radio-controlled wristwatch with a magnetic long-wave antenna integrated into a metallic watch case for receiving coded time information.

Die in der Zeichnung im Achsial-Längsschnitt skizzierte Funkarmbanduhr 11 weist ein Gehäuse 12 mit einem Mittelteil 13 aus elektrisch leitendem Material auf. Es kann sich dabei etwa um ein nicht-metallisches Spritzgußteil mit metallischer Beschichtung handeln, vorzugsweise aber um einen zwar massiven aber doch radial dünnen Edelstahl- oder Titan-Ring. Der bewirkt eine Abschirmung gegen Störeinflüsse, die sonst von einem seitlich angeschlossenen Metallgliederarmband zur ins Armbanduhrengehäuse aufgenommenen Funkuhrenantenne hin eingekoppelt werden können. Falls das Mittelteil 13 nicht integral mit einem Glasreif 14 und/oder einem Bodenring 15 ausgebildet ist, sondern diese wie skizziert als besonders gefertigte Applikationen dem Gehäuse-Mittelteil 13 angefügt werden, können sie aus anderem - ggf. ebenfalls leitendem - Material als das bevorzugt stählerne Mittelteil 13 bestehen. Bei elektrisch leitenden Ringen 14, 15 sollten diese aber radial möglichst nicht wesentlich über das Mittelteil 13 hinaus zum Zentrum des Armbanduhr-Gehäuses 12 hinein ragen.The outlined in the drawing in Achsial longitudinal section radio wristwatch 11 has a housing 12 with a middle part 13 of electrically conductive material. It may be about a non-metallic injection-molded part with a metallic coating, but preferably a solid but yet radially thin stainless steel or titanium ring. This causes a shield against interference, which can otherwise be coupled from a laterally connected metal links bracelet for recorded in the wristwatch housing radio clock antenna out. If the middle part 13 is not integrally formed with a glass rim 14 and / or a bottom ring 15, but this as outlines as specially made applications The housing middle part 13 are added, they may be made of other - possibly also conductive - material than the preferred steel middle part 13. In the case of electrically conductive rings 14, 15, however, they should project radially as far as possible substantially beyond the middle part 13 to the center of the wristwatch housing 12.

Der in das Gehäuse 12 eingesprengte Boden 16 ist eine steife Platte aus elektrisch nicht-leitendem Material, insbesondere aus Keramik oder Glas. Letzeres kann zum Gehäuseinnern hin eine Beschichtung 17 tragen, die durch den Glas-Boden 16 hindurch dekorativ oder informativ konfiguriert ist. Gegenüber ist in das Gehäuse 12 das Uhrglas 18 in herkömmlicher Weise mittels eines Dichtringes 19 eingebaut.The ground 16, which has been inserted into the housing 12, is a rigid plate of electrically non-conductive material, in particular of ceramic or glass. The latter can wear towards the housing interior a coating 17 which is configured through the glass bottom 16 through decorative or informative. Opposite the watch glass 18 is installed in a conventional manner by means of a sealing ring 19 in the housing 12.

Im Innern des Gehäuses 12 ist ein Distanzring 20 aus elektrisch nicht-leitendem Material, insbesondere aus Kunststoff-Spritzguß angeordnet, der sich wesentlich weiter als die Ringe 14, 15 vom Mittelteil 13 zum Zentrum des Gehäuses 12 hin erstreckt. Der Ring 20 kann Integral mit einem arenaartigen Zifferblattring 21 ausgestaltet sein, oder letzterer ist separat aus anderem Material gefertigt und wie skizziert auf die sichtseitige Stirn des Distanzringes 20 appliziert. Nicht gezeichnet ist, daß der Ring 20 mit radialen Bohrungen zur Aufnahme von Hülsen ausgestattet sein kann, in denen das Gehäuse-Mittelteil 13 durchragende Stößel zur Betätigung von Umschaltvorgängen im Funkuhrwerk 22 wasserdicht geführt sind.In the interior of the housing 12, a spacer ring 20 is disposed of electrically non-conductive material, in particular plastic injection molding, which extends substantially further than the rings 14, 15 from the central part 13 to the center of the housing 12 out. The ring 20 may be integral with an arena-like dial ring 21, or the latter is made separately from other material and as sketched applied to the visible end of the spacer ring 20. Not shown is that the ring 20 may be provided with radial bores for receiving sleeves, in which the housing center part 13 penetrating ram are performed to operate switching operations in radio movement 22 waterproof.

Der im Gehäuse 12 gehalterte Distanzring 20 dient unmittelbar und/oder mittels seines Zifferblattringes 21 als Werkring, also zur Halterung des Uhrwerks 22 im Gehäuse 12. Der Rand des sichtseitig auf dem Uhrwerk 22 aufliegenden, aus elektrisch nicht leitendem Material bestehenden Zifferblattes 23 wird vom Zifferblattring 21 radial übergriffen und somit sichtseitig kaschiert. Das Uhrwerk besteht im wesentlichen aus einem Räderwerk 24 für die Bewegung von Zeigern 25 und aus einem Elektronikblock 26 für einerseits die Antriebssteuerung und anderseits den Empfang und die Dekodierung der kodierten Zeitinformation zur periodischen Kontrolle und erforderlichenfalls Korrektur der Zeigerstellung. Dafür enthält der Elektronikblock 26 einen Langwellen-Empfänger 27, der fest auf einen Zeitsender wie denjenigen, der in Deutschland die gesetzliche Zeit verbreitet (DCF 77), abgestimmt ist. Der Empfänger 27 ist an eine magnetische Langwellenantenne 28 in Form einer von einem Ferritkern 29 durchsetzten Spule 30 angeschlossen ist, wie in der Zeichnungsskizze symbolisch dargestellt.The held in the housing 12 spacer ring 20 is used directly and / or by means of his dial ring 21 as a work ring, so for holding the movement 22 in the housing 12. The edge of the visible side resting on the movement 22, consisting of electrically non-conductive material dial 23 is from the dial ring 21 radially overlapped and thus concealed on the visible side. The movement consists essentially of a gear train 24 for the movement of hands 25 and an electronic block 26 on the one hand the drive control and on the other hand, the reception and decoding of the encoded time information for periodic control and, if necessary, correction of the pointer position. For this, the electronics block 26 includes a long-wave receiver 27, which is fixed to a time transmitter such as the one that is in Germany the legal time spread (DCF 77), is tuned. The receiver 27 is connected to a long wave magnetic antenna 28 in the form of a coil 30 penetrated by a ferrite core 29, as shown symbolically in the drawing sketch.

Wenn die Antenne 28 in unmittelbarer Nachbarschaft des metallenen Gehäuses 12 angeordnet wäre, dann würde wie schon erwähnt nicht nur eine (grundsätzlich kompensierbare) Resonanzverstimmung eintreten, sondern insbesondere auch eine derartige (nicht kompensierbare) Güteverminderung, daß mit brauchbaren Empfangsverhältnissen auch bei sehr empfindlichem Empfänger 27 nicht mehr gerechnet werden kann. Deshalb ist durch Zwischenlage des Distanzringes 20 zwischen dem metallenen Uhrgehäuse 12 und dem mit der Antenne 28 ausgestatteten Uhrwerk 22 sichergestellt, daß der Ferritkern 29 einen hinreichenden radialen Abstand vom Innern des metallenen Gehäuses 12 einhält, der Innenwandung gegenüber also zum Zentrum des Uhrgehäuses 12 hin versetzt ist. In der Montageebene des Kernes 29 gemessen liegt die Breite des Distanzringes 20 typisch in der Größenordnung von 20% bis 30 % des Innendurchmessers des Armbanduhrengehäuses 12.If the antenna 28 were arranged in the immediate vicinity of the metal housing 12, then, as already mentioned, not only a (basically compensable) resonance detuning would occur, but in particular also such a (non-compensatable) degradation, that with useful reception ratios even with very sensitive receiver 27 can no longer be expected. Therefore, it is ensured by interposition of the spacer ring 20 between the metal watch case 12 and equipped with the antenna 28 clockwork 22 that the ferrite core 29 maintains a sufficient radial distance from the interior of the metal housing 12, the inner wall so compared to the center of the watch case 12 out is. Measured in the mounting plane of the core 29, the width of the spacer ring 20 is typically on the order of 20% to 30% of the inner diameter of the wristwatch housing 12th

Der Antennen-Kern 29 kann lamelliert sein, bei hinreichendem Abstand vom umlaufenden metallenen Uhrgehäuse 12 genügt aber auch ein unflexibler prismatischer, etwa zylindrischer Stab. Der kann, wie symbolisch skizziert, radial in Bezug auf das Zentrum des Uhrgehäuses 12 auf der Leiterplatte des Elektronikblockes 26 montiert sein; oder aber er ist, je nach den Platzerfordernissen für die übrigen elektrischen Bauelemente, gegenüber der skizzierten Darstellung um 90° aus der Zeichenebene heraus verschwenkt als Sekante in der Nähe des Außenumfangs des Uhrwerks 22 angeordnet. In dieser Ebene quer zur Zentralachse 31 der Funkarmbanduhr 11, also auch ihres Uhrwerks 22 und ihres Gehäuses 12, würden zwar an sich keine magnetischen Feldlinien, welche die Gläser 18, 16 parallel zur Zentralachse 31 durchsetzen, in den Kern 29 eintreten können; weil aber diese Feldlinien die Funkarmbanduhr 11 nicht ungestört durchsetzen, sondern durch Metallteile im Räderwerk 24 und durch das umgebenden metallenen Gehäuse-Mittelteil 13 in ihrer Ausbreitung verzerrt werden, tritt auch ein fur den Langwellenempfang hinreichender magnetischer Fluß durch den vorzugsweise lamellierten Kern 29 auf, ohne daß die Armbanduhr 11 durch eine etwa achsparallele Ausrichtung des Kernes 29 unzumutbar an Höhe gewinnen müßte.The antenna core 29 may be laminated, but at a sufficient distance from the rotating metal watch case 12 but also satisfies an inflexible prismatic, about cylindrical rod. It may be mounted radially, as symbolically sketched, with respect to the center of the watch case 12 on the circuit board of the electronics block 26; or he is, depending on the space requirements for the other electrical components, compared to the outlined representation by 90 ° out of the plane pivoted out as a secant near the outer periphery of the movement 22. In this plane transverse to the central axis 31 of the radio wristwatch 11, including its movement 22 and its housing 12, although in itself no magnetic field lines, which pass through the glasses 18, 16 parallel to the central axis 31, could enter the core 29; but because these field lines the radio wristwatch 11 do not enforce undisturbed, but are distorted by metal parts in the gear train 24 and by the surrounding metal housing middle part 13 in their spread, also occurs for the long wave reception sufficient magnetic flux through the preferably laminated core 29, without that the wristwatch 11 would have to gain unreasonable height by an approximately paraxial alignment of the core 29.

Um bei einer Funkarmbanduhr 11 einerseits nicht auf ein metallisches Gehäuse 12 verzichten zu müssen und andererseits die magnetische Langwellen-Antenne 28 für den Empfang der zu dekodierenden Zeitinformation nicht nach außerhalb des Gehäuses 12 wie insbesondere in ein Armband verlegen zu müssen, ist also erfindungsgemäß wenigstens das Gehäuse-Mittelteil 13 als dünner massiver oder beschichteter elektrisch leitender Ring ausgebildet, innerhalb dessem ein Distanzring 20 aus elektrisch nicht-leitendem Material das Uhrwerk 22 mit an dessem Rand sekantial angeordnetem gestreckt-prismatischem Antennen-Kern 29 zwischen zwei Scheiben aus elektrisch nicht-leitendem Material, nämlich dem Uhrglas 18 und dem Gehäuseboden 16, auf radialen Abstand zum metallenen Mittelteil 13 haltert, wobei der Boden 16 vorzugsweise eine zum Gehäuse-Innern hin dekorativ oder informativ beschichtete Glasplatte ist.In order not to have to forego a metallic housing 12 in a radio-controlled watch 11 and on the other hand, the magnetic long-wave antenna 28 for receiving the time information to be decoded not to have to move outside of the housing 12 as in particular in a bracelet, that is at least the invention Housing middle part 13 formed as a thin solid or coated electrically conductive ring, within which a spacer ring 20 of electrically non-conductive material, the movement 22 with its edge sekantial arranged elongated prismatic antenna core 29 between two discs of electrically non-conductive material , namely the watch glass 18 and the housing bottom 16, at a radial distance to the metal middle part 13, wherein the bottom 16 is preferably a housing interior toward decorative or informative coated glass plate.

Claims (9)

  1. A radio-controlled wristwatch (11) having a magnetic long-wave aerial (28) with aerial core (29) housed in its case (12) and a clockwork mechanism (22), wherein the case (12) comprises between its watchglass (18) and a base (16) made from electrically non-conductive material a metallic central part (13) of the case, compared to which the aerial core (29) is radially shifted in relation to the case (12) towards its centre,
    wherein a spacer ring (20) made from an electrically non-conductive material is provided between the central part (13) of the case and the clockwork mechanism (22) equipped with the aerial core (29) to guarantee an all-round radial distance from the aerial core (29) to the inner wall of the central part (13) of the case, wherein the spacer ring (20) is located in the assembly plane of the aerial core (29).
  2. A radio-controlled wristwatch according to Claim,
    characterised in that the spacer ring (20) extends from the central part (13) of the case towards the centre of the case (12).
  3. A radio-controlled wristwatch according to one of the preceding Claims,
    characterised in that the width of the spacer ring (20) - measured in the assembly plane of the aerial core (29) - is in the magnitude of 20 % to 30 % of the internal diameter of the case (12).
  4. A radio-controlled wristwatch according to one of the preceding Claims,
    characterised in that the aerial core (29) is disposed in a plane transversely to a central axis (31) of the case (12).
  5. A radio-controlled wristwatch according to one of the preceding Claims,
    characterised in that the aerial core (29) is disposed along a secant close to an outer edge of a clockwork mechanism (22).
  6. A radio-controlled wristwatch according to one of the preceding Claims,
    characterised in that the spacer ring (20) is constructed as a mechanism housing ring.
  7. A radio-controlled wristwatch according to one of the preceding Claims,
    characterised in that at least the central part (13) of the case is constructed as a thin, solid metal circlet, in particular made from stainless steel or titanium,
    or in that the central part (13) of the case is a non-metallic injection-moulded part having a metallic coating.
  8. A radio-controlled wristwatch according to one of the preceding Claims,
    characterised in that the base (16) is a ceramic or glass plate.
  9. A radio-controlled wristwatch according to one of the preceding Claims,
    characterised in that the base (16) is made from transparent or translucent electrically non-conductive material, which towards the interior of the case comprises an ornamentally or informatively designed coating (17).
EP00111766A 1999-06-09 2000-06-03 Radio wristwatch Expired - Lifetime EP1067442B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19926271A DE19926271C2 (en) 1999-06-09 1999-06-09 Funkarmbanduhr
DE19926271 1999-06-09

Publications (4)

Publication Number Publication Date
EP1067442A2 EP1067442A2 (en) 2001-01-10
EP1067442A3 EP1067442A3 (en) 2004-05-19
EP1067442B1 EP1067442B1 (en) 2005-08-31
EP1067442B2 true EP1067442B2 (en) 2010-09-15

Family

ID=7910667

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00111766A Expired - Lifetime EP1067442B2 (en) 1999-06-09 2000-06-03 Radio wristwatch

Country Status (9)

Country Link
US (1) US6411569B1 (en)
EP (1) EP1067442B2 (en)
JP (2) JP3768384B2 (en)
CN (1) CN1134718C (en)
AT (1) ATE303617T1 (en)
DE (2) DE19926271C2 (en)
DK (1) DK1067442T4 (en)
ES (1) ES2245285T5 (en)
HK (1) HK1033744A1 (en)

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Also Published As

Publication number Publication date
JP3768384B2 (en) 2006-04-19
ES2245285T3 (en) 2006-01-01
HK1033744A1 (en) 2001-09-21
DE19926271C2 (en) 2002-09-26
CN1134718C (en) 2004-01-14
EP1067442A3 (en) 2004-05-19
JP2006064708A (en) 2006-03-09
JP2001033571A (en) 2001-02-09
ATE303617T1 (en) 2005-09-15
EP1067442B1 (en) 2005-08-31
DE19926271A1 (en) 2000-12-21
US6411569B1 (en) 2002-06-25
DE50011054D1 (en) 2005-10-06
DK1067442T4 (en) 2011-01-03
ES2245285T5 (en) 2010-11-29
EP1067442A2 (en) 2001-01-10
CN1277371A (en) 2000-12-20
DK1067442T3 (en) 2006-01-09

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