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EP0483065A1 - Wristwatch - Google Patents

Wristwatch Download PDF

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Publication number
EP0483065A1
EP0483065A1 EP91810805A EP91810805A EP0483065A1 EP 0483065 A1 EP0483065 A1 EP 0483065A1 EP 91810805 A EP91810805 A EP 91810805A EP 91810805 A EP91810805 A EP 91810805A EP 0483065 A1 EP0483065 A1 EP 0483065A1
Authority
EP
European Patent Office
Prior art keywords
rotor
coils
capacitor
annular space
permanent magnets
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.)
Granted
Application number
EP91810805A
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German (de)
French (fr)
Other versions
EP0483065B1 (en
Inventor
Walter Affolter
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.)
Charles Gigandet Sa
Original Assignee
Charles Gigandet Sa
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Filing date
Publication date
Application filed by Charles Gigandet Sa filed Critical Charles Gigandet Sa
Publication of EP0483065A1 publication Critical patent/EP0483065A1/en
Application granted granted Critical
Publication of EP0483065B1 publication Critical patent/EP0483065B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C10/00—Arrangements of electric power supplies in time pieces

Definitions

  • the invention relates to a wristwatch according to the preamble of claim 1.
  • this rotor In previously known wristwatches of this type, which, like self-winding watches, have a rotor that is pivoted back and forth by the movement of the hand of the person wearing the watch, this rotor consists of a metal segment that forms the flywheel and its circumference with a toothing is provided. During the movement of the rotor, this toothing comes into engagement with a pinion which carries a permanent magnet which is moved back and forth in front of a coil in order to generate current surges for charging the capacitor by the induction effect.
  • the present invention has for its object to improve a wristwatch of this type in such a way that a greater relative speed between the permanent magnet and the coil and thus stronger induced currents are achieved during the movement of the rotor and that such a watch is also readily available with prefabricated movements of different calibers and Types can be provided.
  • This configuration ensures that the rotor can have the maximum possible diameter in a housing of a given size and, consequently, the part of the induction system, coil or permanent magnet attached to its circumference, can be moved at a correspondingly high speed, a gear transmission advantageously being omitted.
  • the entire central area of the watch is available for accommodating the watch mechanism, since the induction system is only arranged in the peripheral area of the housing.
  • the arrangement is preferably such that in the housing there is a base plate with a pot-shaped depression provided in the central region thereof, which is open on one side and in which the clockwork is seated, and with a plate provided in the peripheral region of this base plate after the other Side open circular recess is mounted, which forms the annular space mentioned.
  • the base plate advantageously serves both as a magnetic yoke in the induction system and as a movement holder.
  • the central cup-shaped depression of the base plate allows clockworks of any caliber and of any type to be inserted into the housing in a simple manner and, if necessary, exchanged; if a movement with a caliber smaller than that of the size of the cup-shaped depression is used, an additional, adapted movement retaining ring can be provided, for example.
  • four coils are fastened at the same angular distance from one another on the circumference of the disk-shaped rotor, which has an unbalance on its half, expediently in the form of a greater material thickness, which co-operate with four magnet pairs likewise fastened at the same angular distance from one another in the annular space , wherein preferably a coil is provided with a soft iron core.
  • the wristwatch has a housing consisting of a central part 1 with band connections 1a and a bottom 2, a base plate 3 inserted into the central part 1, a clockwork 4, a dial 5 resting on a support 5a and a watch glass 6.
  • the base plate 3 made of soft iron is stepped and has in the central area 3a an upwardly open cup-shaped depression for receiving the clockwork 4 and on its circumferential area 3b an annular depression open to the other side, i.e. towards the bottom 2, which one Annulus 9 for receiving the induction system forms.
  • a downwardly open recess for receiving a capacitor 7 is provided.
  • a disk-shaped rotor 8 which can be freely rotated about a central pin 23 and which is practical extends over the entire inner diameter of the housing.
  • This rotor 8 forms an unbalance 8a or a flywheel mass in that, in the example under consideration, the material thickness of this rotor half is more than twice as large as the other half 8b of the rotor.
  • the peripheral zone 8c of the rotor 8 is angled inwards so that it projects into the annular space 9 and, in the example under consideration, carries four coils 10 at the same angular distance of 90 ° each.
  • the coil axes are parallel to the housing axis.
  • Four permanent magnet pairs are fastened in the annular space 9, likewise at the same angular distance of 90 ° each, of which one permanent magnet 11 of each pair on the upper wall of the peripheral region 3b of the base plate 3 and the other magnet 11a of each pair on an annular plate 12 made of soft iron is attached, which almost covers the annular space 9 formed by the annular depression at the bottom, ie on the side facing the floor.
  • This ring plate 12 is attached to the outer edge of the base plate 3.
  • the two permanent magnets 11, 11a of each pair are at a distance from one another and are oriented with their magnetic axes parallel to the axis of the housing, opposite magnetic poles lying opposite each other and the poles alternating from permanent magnets in the circumferential direction.
  • the distance between the two permanent magnets 11, 11a of each pair is dimensioned such that the peripheral zone 8c of the rotor 8 with the coils 10 attached to it can freely swing through the space between the respective permanent magnets.
  • the capacitor 7 is accessible through a corresponding recess in the base plate 3 and, like a battery, can be inserted or removed in a simple manner when the base 2 and the rotor 8 have been removed.
  • FIG. 6 schematically shows the developed arrangement of the four permanent magnet pairs 11, 11a with the position of their poles and the four coils 10 movable between the permanent magnets of each pair, voltages being induced in the opposite direction from coil to coil when the magnets pass. as indicated by arrows. All four coils 10 are connected in parallel on the rotor 8, which consists, for example, of brass, by means of corresponding lines, as shown in FIG.
  • a soft iron core 10a is preferably arranged in the interior of one of the coils 10, as a result of which preferred rest positions of the rotor 8 are defined, since this coil tends to come to rest precisely between these permanent magnets due to the magnetic attraction of its core by the two permanent magnets of a magnet pair.
  • the rotor 8 receives a small movement impulse, it leaves this rest position and is preferably moved into the following rest position, in which the coil with the core comes to rest between the two permanent magnets of another pair of magnets. This favors the creation of relatively rapid rotor movements. A too strong magnetic attraction force on the rotor which is in a rest position is avoided in that only one of the coils is provided with a core.
  • the printed circuit board 13 carries two contact springs 14 and 15, a rectifier 18, two conductor tracks 19 and 20, which connect the contact springs 14 and 15 to the AC inputs of the rectifier 18, and two further wide conductor tracks 21 and 22, which are connected to the direct current outputs of the rectifier 18 and whose ends are connected to the electrode connections of the capacitor 7 as correspondingly bent contact tabs.
  • the flexible conductor tracks 21 and 22 belong to a printed circuit on which the rectifier and the contact springs are soldered.
  • the conductor track 22 is placed around the capacitor 7 and touches the negative contact of the housing and the negative pole of the capacitor at the bottom.
  • the small tongue-shaped conductor track 21 is in contact with the positive contact of the clockwork and the positive pole of the capacitor.
  • FIG. 4 shows the contact tabs of the conductor tracks 21 and 22 in the straight state before they are bent over.
  • the two contact springs 14 and 15 rest as sliding contacts on two annular, concentric contact tracks 16 and 17, which are arranged on the underside of the rotor 18 and are connected to the two lines connecting the coils 10 in parallel, as schematically shown in FIG. 7 indicated.
  • the coils 10 crossing the magnetic fields of the permanent magnet pairs 11, 11a generate currents of different directions, which are rectified in the rectifier 18 and charge the capacitor 7 is in turn connected to the clockwork 4 as a power source.
  • the clockwork 4 can in the usual way have an electronic time base with a quartz-controlled oscillator with a frequency divider that controls a stepper motor as a drive device for the pointer mechanism. Such commercially available electronic movements have a current consumption of approximately 2 A.
  • An electrolytic capacitor of 0.2 F is preferably used as the capacitor 7. This offers a power reserve of around 36 hours.
  • Samarium-cobalt magnets can preferably be used as permanent magnets, the magnets 11 in the example considered having a diameter of 3.2 mm and an axial height of 1.2 mm and the magnets 11a having a diameter of 3.0 mm and an axial height of 0.6 mm, while the coils can have a diameter of 3.2 mm and a height of 1.5 mm.
  • the generally required current stabilization circuit can also be accommodated on the printed circuit board 13.
  • the diameter of the clockwork is approximately 24 mm
  • the outer diameter of the base plate 3 is approximately 32 mm
  • the outer diameter of the housing, that is the total diameter of the clock is approximately 33 to 34 mm.
  • the base plate 3 serves not only as a magnetic yoke, but also as a movement holder, the clockwork rim resting on an annular shoulder of the central pot-shaped depression. However, it is also possible to use movements of a different caliber with one and the same base plate if an additional adapted movement retaining ring is provided.
  • the invention is not limited to the exemplary embodiment described, but rather allows for numerous variants, in particular with regard to the shape of the base plate and the rotor, the number and distribution of the coils and the permanent magnets.
  • the coils can also be arranged permanently in the annular space 9 and the permanent magnets on the peripheral zone 8c of the rotor 8. It is essential that in the case of several coils and permanent magnets, the moving parts always pass the fixed parts of the induction system simultaneously, that is to say the angular spacings of the fixed parts correspond to those of the moving parts in order to obtain the maximum possible charging of the capacitor.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
  • Electric Clocks (AREA)

Abstract

A capacitor (7), which is charged by induction currents generated in coils, is used as the power source of the wristwatch. A rotor (8) is provided for this purpose, which can rotate about the centre of the housing, the circumferential zone (8c) of which rotor lies in an annular space (9) surrounding the watch mechanism (4) and which supports a plurality of coils (10) which are distributed uniformly and are connected electrically in parallel. Mounted in the annular space (9) are a plurality of permanent magnet pairs (11, 11a) whose magnets are in each case located opposite one another, and at a distance from one another, and between which the coils (10) oscillate, which coils are connected via annular contact tracks on the rotor (8), and contact springs (14, 15), to a rectifier, via which the capacitor (7) is charged. The permanent magnets (11, 11a) are seated on the circumferential region (3b) of a baseplate (3) consisting of soft iron whose central region (3a) has a cup-shaped depression for holding the watch mechanism (4). <IMAGE>

Description

Die Erfindung bezieht sich auf eine Armbanduhr gemäss dem Oberbegriff des Patentanspruchs 1.The invention relates to a wristwatch according to the preamble of claim 1.

Bei bisher bekannten Armbanduhren dieser Art, die wie Uhren mit Selbstaufzug einen Rotor aufweisen, der durch die Bewegung der Hand der die Uhr tragenden Person hin- und hergeschwenkt wird, besteht dieser Rotor aus einem Metallsegment, das die Schwungmasse bildet und dessen Umfang mit einer Verzahnung versehen ist. Bei der Bewegung des Rotors gelangt diese Verzahnung in Eingriff mit einem Ritzel, welches einen Dauermagneten trägt, der vor einer Spule hin- und herbewegt wird, um durch den Induktionseffekt Stromstösse zur Aufladung des Kondensators zu erzeugen.In previously known wristwatches of this type, which, like self-winding watches, have a rotor that is pivoted back and forth by the movement of the hand of the person wearing the watch, this rotor consists of a metal segment that forms the flywheel and its circumference with a toothing is provided. During the movement of the rotor, this toothing comes into engagement with a pinion which carries a permanent magnet which is moved back and forth in front of a coil in order to generate current surges for charging the capacitor by the induction effect.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Armbanduhr dieses Typs derart zu verbessern, dass bei der Bewegung des Rotors eine grössere Relativgeschwindigkeit zwischen Dauermagnet und Spule und damit stärkere induzierte Ströme erreicht werden und dass ausserdem eine derartige Uhr ohne weiteres mit vorgefertigten Uhrwerken verschiedener Kaliber und Typen versehen werden kann.The present invention has for its object to improve a wristwatch of this type in such a way that a greater relative speed between the permanent magnet and the coil and thus stronger induced currents are achieved during the movement of the rotor and that such a watch is also readily available with prefabricated movements of different calibers and Types can be provided.

Diese Aufgabe wird durch die im kennzeichnenden Teil des Anspruchs 1 angegebenen Merkmale gelöst.This object is achieved by the features specified in the characterizing part of claim 1.

Durch diese Ausbildung wird erreicht, dass der Rotor in einem Gehäuse von gegebener Grösse den maximal möglichen Durchmesser haben kann und demzufolge der an seinem Umfang befestigte Teil des Induktionssystems, Spule oder Dauermagnet, mit entsprechend hoher Geschwindigkeit bewegbar ist, wobei eine Zahnradübertragung vorteilhafterweise entfällt. Ausserdem steht der gesamte zentrale Bereich der Uhr zur Unterbringung des Uhrwerks zur Verfügung, da das Induktionssystem lediglich im Umfangsbereich des Gehäuses angeordnet ist.This configuration ensures that the rotor can have the maximum possible diameter in a housing of a given size and, consequently, the part of the induction system, coil or permanent magnet attached to its circumference, can be moved at a correspondingly high speed, a gear transmission advantageously being omitted. In addition, the entire central area of the watch is available for accommodating the watch mechanism, since the induction system is only arranged in the peripheral area of the housing.

Vorzugsweise ist die Anordnung so getroffen, dass im Gehäuse eine Grundplatte mit einer im mittleren Bereich derselben vorgesehenen, topfförmigen Vertiefung, die nach der einen Seite hin offen ist und in welcher das Uhrwerk sitzt, und mit einer im Umfangsbereich dieser Grundplatte vorgesehenen, nach der anderen Seite hin offenen kreisringförmigen Vertiefung montiert ist, welche den erwähnten Ringraum bildet.The arrangement is preferably such that in the housing there is a base plate with a pot-shaped depression provided in the central region thereof, which is open on one side and in which the clockwork is seated, and with a plate provided in the peripheral region of this base plate after the other Side open circular recess is mounted, which forms the annular space mentioned.

Hierbei dient die Grundplatte vorteilhafterweise gleichzeitig als magnetischer Rückschluss im Induktionssystem und als Werkhalter. Die zentrale topfförmige Vertiefung der Grundplatte erlaubt es, auf einfache Weise Uhrwerke beliebigen Kalibers und beliebigen Typs in das Gehäuse einzusetzen und gegebenenfalls auszutauschen; wenn ein Uhrwerk mit einem kleineren Kaliber verwendet wird, als es der Grösse der topfförmigen Vertiefung entspricht, kann beispielsweise ein zusätzlicher, angepasster Werkhaltering vorgesehen sein.Here, the base plate advantageously serves both as a magnetic yoke in the induction system and as a movement holder. The central cup-shaped depression of the base plate allows clockworks of any caliber and of any type to be inserted into the housing in a simple manner and, if necessary, exchanged; if a movement with a caliber smaller than that of the size of the cup-shaped depression is used, an additional, adapted movement retaining ring can be provided, for example.

In einer vorteilhaften Ausführungsform sind am Umfang des scheibenförmig ausgebildeten Rotors, der auf seiner einen Hälfte eine Unwucht, zweckmässigerweise in Form einer grösseren Materialdicke, aufweist, vier Spulen im gleichen Winkelabstand voneinander befestigt, welche mit vier ebenfalls im gleichen Winkelabstand voneinander im Ringraum befestigten Magnetpaaren zusammenarbeiten, wobei vorzugsweise eine Spule mit einem Weicheisenkern versehen ist.In an advantageous embodiment, four coils are fastened at the same angular distance from one another on the circumference of the disk-shaped rotor, which has an unbalance on its half, expediently in the form of a greater material thickness, which co-operate with four magnet pairs likewise fastened at the same angular distance from one another in the annular space , wherein preferably a coil is provided with a soft iron core.

Weitere zweckmässige Ausgestaltungen der Armbanduhr nach der Erfindung ergeben sich aus den abhängigen Ansprüchen.Further expedient configurations of the wristwatch according to the invention result from the dependent claims.

Die Erfindung wird anhand der Zeichnung an einem Ausführungsbeispiel näher erläutert. Es zeigen :

  • Figur 1 eine etwas schematisch dargestellte Armbanduhr nach der Erfindung, im Schnitt,
  • Figur 2 eine Draufsicht in Richtung des Pfeils II nach Figur 1, ohne Zifferblatt,
  • Figur 3 eine Draufsicht auf den Rotor der Armbanduhr, in Richtung des Pfeils III nach Figur 1,
  • Figur 4 eine Ansicht der auf dem Kondensator befestigten Printplatte mit ihren breiten Leiterbahnen,
  • Figur 5 eine Seitenansicht des Kondensators mit der montierten Printplatte,
  • Figur 6 eine schematische Darstellung der relativen Anordnung von Spulen und Dauermagneten des Induktionssystems und
  • Figur 7 ein Schaltbild mit den parallel geschalteten und an den Kondensator angeschlossenen Spulen.
The invention is explained in more detail with reference to the drawing using an exemplary embodiment. Show it :
  • 1 shows a somewhat schematically illustrated wristwatch according to the invention, in section,
  • FIG. 2 shows a plan view in the direction of arrow II according to FIG. 1, without a dial,
  • FIG. 3 shows a plan view of the rotor of the wristwatch, in the direction of arrow III according to FIG. 1,
  • FIG. 4 shows a view of the printed circuit board fastened to the capacitor with its wide conductor tracks,
  • FIG. 5 shows a side view of the capacitor with the printed circuit board mounted,
  • Figure 6 is a schematic representation of the relative arrangement of coils and permanent magnets of the induction system and
  • Figure 7 is a circuit diagram with the coils connected in parallel and connected to the capacitor.

Nach Figur 1 weist die Armbanduhr ein Gehäuse aus einem Mittelteil 1 mit Bandanschlüssen 1a und aus einem Boden 2, eine in den Mittelteil 1 eingesetzte Grundplatte 3, ein Uhrwerk 4, ein auf einer Auflage 5a ruhendes Zifferblatt 5 und ein Uhrglas 6 auf. Die aus Weicheisen bestehende Grundplatte 3 ist gestuft ausgebildet und hat im mittleren Bereich 3a eine nach oben hin offene topfförmige Vertiefung zur Aufnahme des Uhrwerks 4 und an ihrem Umfangsbereich 3b eine nach der anderen Seite, also zum Boden 2 hin offene, kreisringförmige Vertiefung, welche einen Ringraum 9 zur Aufnahme des Induktionssystems bildet.According to FIG. 1, the wristwatch has a housing consisting of a central part 1 with band connections 1a and a bottom 2, a base plate 3 inserted into the central part 1, a clockwork 4, a dial 5 resting on a support 5a and a watch glass 6. The base plate 3 made of soft iron is stepped and has in the central area 3a an upwardly open cup-shaped depression for receiving the clockwork 4 and on its circumferential area 3b an annular depression open to the other side, i.e. towards the bottom 2, which one Annulus 9 for receiving the induction system forms.

Im Uhrwerk 4 ist eine nach unten hin offene Ausnehmung zur Aufnahme eines Kondensators 7 vorgesehen. Zwischen der Unterseite des Uhrwerks 4 und dem Boden 2 ist ein um einen zentralen Zapfen 23 frei drehbarer scheibenförmiger Rotor 8 montiert, der sich praktisch über den gesamten Innendurchmesser des Gehäuses erstreckt. Die eine Hälfte dieses Rotors 8 bildet eine Unwucht 8a bzw. eine Schwungmasse, indem im betrachteten Beispiel die Materialdicke dieser Rotorhälfte mehr als doppelt so gross wie die andere Hälfte 8b des Rotors ist.In the clockwork 4, a downwardly open recess for receiving a capacitor 7 is provided. Between the underside of the clockwork 4 and the base 2 is mounted a disk-shaped rotor 8 which can be freely rotated about a central pin 23 and which is practical extends over the entire inner diameter of the housing. One half of this rotor 8 forms an unbalance 8a or a flywheel mass in that, in the example under consideration, the material thickness of this rotor half is more than twice as large as the other half 8b of the rotor.

Die Umfangszone 8c des Rotors 8 ist nach innen abgewinkelt, so dass sie in den Ringraum 9 hineinragt, und trägt im betrachteten Beispiel vier Spulen 10 im gleichen Winkelabstand von je 90°. Die Spulenachsen liegen parallel zur Gehäuseachse. Im Ringraum 9 sind, ebenfalls im gleichen Winkelabstand von je 90°, vier Dauermagnetpaare befestigt, von denen der eine Dauermagnet 11 jedes Paares an der oberen Wand des Umfangsbereichs 3b der Grundplatte 3 und der andere Magnet 11a jedes Paares auf einer aus Weicheisen bestehenden Ringplatte 12 befestigt ist, welche den durch die kreisringförmige Vertiefung gebildeten Ringraum 9 unten, also auf der zum Boden hin gerichteten Seite, nahezu abdeckt. Diese Ringplatte 12 ist am äusseren Rand der Grundplatte 3 befestigt.The peripheral zone 8c of the rotor 8 is angled inwards so that it projects into the annular space 9 and, in the example under consideration, carries four coils 10 at the same angular distance of 90 ° each. The coil axes are parallel to the housing axis. Four permanent magnet pairs are fastened in the annular space 9, likewise at the same angular distance of 90 ° each, of which one permanent magnet 11 of each pair on the upper wall of the peripheral region 3b of the base plate 3 and the other magnet 11a of each pair on an annular plate 12 made of soft iron is attached, which almost covers the annular space 9 formed by the annular depression at the bottom, ie on the side facing the floor. This ring plate 12 is attached to the outer edge of the base plate 3.

Die beiden Dauermagnete 11, 11a jedes Paares liegen im Abstand einander gegenüber und sind mit ihren magnetischen Achsen parallel zur Achse des Gehäuses orientiert, wobei jeweils entgegengesetzte Magnetpole einander gegenüberliegen und die Pole von in Umfangsrichtung aufeinanderfolgenden Dauermagneten abwechseln. Der Abstand zwischen den beiden Dauermagneten 11, 11a jedes Paares ist so bemessen, dass die Umfangszone 8c des Rotors 8 mit den daran befestigten Spulen 10 frei durch den Raum zwischen den jeweiligen Dauermagneten hindurchschwingen kann.The two permanent magnets 11, 11a of each pair are at a distance from one another and are oriented with their magnetic axes parallel to the axis of the housing, opposite magnetic poles lying opposite each other and the poles alternating from permanent magnets in the circumferential direction. The distance between the two permanent magnets 11, 11a of each pair is dimensioned such that the peripheral zone 8c of the rotor 8 with the coils 10 attached to it can freely swing through the space between the respective permanent magnets.

Der Kondensator 7 ist durch eine entsprechende Aussparung der Grundplatte 3 hindurch zugänglich und kann wie eine Batterie auf einfache Weise eingesetzt oder herausgenommen werden, wenn der Boden 2 und der Rotor 8 abmontiert sind.The capacitor 7 is accessible through a corresponding recess in the base plate 3 and, like a battery, can be inserted or removed in a simple manner when the base 2 and the rotor 8 have been removed.

Figur 6 zeigt schematisch die abgewickelte Anordnung der vier Dauermagnetpaare 11, 11a mit der Lage ihrer Pole und die zwischen den Dauermagneten jedes Paares beweglichen vier Spulen 10, wobei in diesen beim Vorbeigang an den Magneten jeweils Spannungen in von Spule zu Spule entgegengesetzter Richtung induziert werden, wie durch Pfeile angedeutet. Alle vier Spulen 10 sind auf dem Rotor 8, der beispielsweise aus Messing besteht, durch entsprechende Leitungen parallelgeschaltet, wie Figur 7 zeigt.FIG. 6 schematically shows the developed arrangement of the four permanent magnet pairs 11, 11a with the position of their poles and the four coils 10 movable between the permanent magnets of each pair, voltages being induced in the opposite direction from coil to coil when the magnets pass. as indicated by arrows. All four coils 10 are connected in parallel on the rotor 8, which consists, for example, of brass, by means of corresponding lines, as shown in FIG.

Vorzugsweise ist im Innern einer der Spulen 10 ein Weicheisenkern 10a angeordnet, wodurch bevorzugte Ruhelagen des Rotors 8 definiert werden, da diese Spule aufgrund der magnetischen Anziehung ihres Kerns durch die beiden Dauermagneten eines Magnetpaares die Tendenz hat, gerade zwischen diesen Dauermagneten zur Ruhe zu kommen. Wenn der Rotor 8 einen kleinen Bewegungsimpuls erhält, verlässt er diese Ruhelage und wird bevorzugt in die folgende Ruhelage bewegt, in der die Spule mit Kern zwischen den beiden Dauermagneten eines anderen Magnetenpaares zur Ruhe kommt. Das begünstigt das Zustandekommen verhältnismässig rascher Rotorbewegungen. Eine zu starke magnetische Anziehungskraft auf den in einer Ruhelage befindlichen Rotor wird dadurch vermieden, dass nur eine der Spulen mit einem Kern versehen ist.A soft iron core 10a is preferably arranged in the interior of one of the coils 10, as a result of which preferred rest positions of the rotor 8 are defined, since this coil tends to come to rest precisely between these permanent magnets due to the magnetic attraction of its core by the two permanent magnets of a magnet pair. When the rotor 8 receives a small movement impulse, it leaves this rest position and is preferably moved into the following rest position, in which the coil with the core comes to rest between the two permanent magnets of another pair of magnets. This favors the creation of relatively rapid rotor movements. A too strong magnetic attraction force on the rotor which is in a rest position is avoided in that only one of the coils is provided with a core.

Die übrige Schaltung zum Laden des Kondensators 7 ist auf einer Printplatte 13 untergebracht, die auf der nach aussen weisenden Fläche des Kondensators 7, beispielsweise durch Kleben, befestigt ist. Wie in den Figuren 4 und 5 schematisch dargestellt, trägt die Printplatte 13 zwei Kontaktfedern 14 und 15, einen Gleichrichter 18, zwei Leiterbahnen 19 und 20, welche die Kontaktfedern 14 und 15 mit den Wechselstromeingängen des Gleichrichters 18 verbinden, und zwei weitere breite Leiterbahnen 21 und 22, die mit den Gleichstromausgängen des Gleichrichters 18 verbunden sind und deren Enden als entsprechend umgebogene Kontaktfahnen mit den Elektrodenanschlüssen des Kondensators 7 in Verbindung stehen. Die flexiblen Leiterbahnen 21 und 22 gehören zu einer gedruckten Schaltung, auf der der Gleichrichter und die Kontaktfedern angelötet sind. Die Leiterbahn 22 ist um den Kondensator 7 gelegt und berührt unten den Minuskontakt des Gehäuses und den Minuspol des Kondensators. Die kleine zungenförmige Leiterbahn 21 steht mit dem Pluskontakt des Uhrwerks und dem Pluspol des Kondensators in Berührung. In Figur 4 sind die Kontaktfahnen der Leiterbahnen 21 und 22 vor ihrer Umbiegung im geraden Zustand gezeigt.The rest of the circuit for charging the capacitor 7 is accommodated on a printed circuit board 13, which is fastened to the outwardly facing surface of the capacitor 7, for example by gluing. As shown schematically in FIGS. 4 and 5, the printed circuit board 13 carries two contact springs 14 and 15, a rectifier 18, two conductor tracks 19 and 20, which connect the contact springs 14 and 15 to the AC inputs of the rectifier 18, and two further wide conductor tracks 21 and 22, which are connected to the direct current outputs of the rectifier 18 and whose ends are connected to the electrode connections of the capacitor 7 as correspondingly bent contact tabs. The flexible conductor tracks 21 and 22 belong to a printed circuit on which the rectifier and the contact springs are soldered. The conductor track 22 is placed around the capacitor 7 and touches the negative contact of the housing and the negative pole of the capacitor at the bottom. The small tongue-shaped conductor track 21 is in contact with the positive contact of the clockwork and the positive pole of the capacitor. FIG. 4 shows the contact tabs of the conductor tracks 21 and 22 in the straight state before they are bent over.

Im montierten Zustand der Uhr liegen die beiden Kontaktfedern 14 und 15 als Schleifkontakte an zwei ringförmigen, konzentrischen Kontaktbahnen 16 und 17 an, die auf der Unterseite des Rotors 18 angeordnet und mit den beiden die Spulen 10 parallelschaltenden Leitungen verbunden sind, wie schematisch in Figur 7 angedeutet. Auf diese Weise werden beim Schwingen des Rotors 8 durch die die Magnetfelder der Dauermagnetpaare 11, 11a kreuzenden Spulen 10 Ströme unterschiedlicher Richtung erzeugt, die im Gleichrichter 18 gleichgerichtet werden und den Kondensator 7 aufladen, der seinerseits als Stromquelle an das Uhrwerk 4 angeschlossen ist.In the assembled state of the watch, the two contact springs 14 and 15 rest as sliding contacts on two annular, concentric contact tracks 16 and 17, which are arranged on the underside of the rotor 18 and are connected to the two lines connecting the coils 10 in parallel, as schematically shown in FIG. 7 indicated. In this way, when the rotor 8 vibrates, the coils 10 crossing the magnetic fields of the permanent magnet pairs 11, 11a generate currents of different directions, which are rectified in the rectifier 18 and charge the capacitor 7 is in turn connected to the clockwork 4 as a power source.

Das Uhrwerk 4 kann in üblicher Weise eine elektronische Zeitbasis mit einem quarzgesteuerten Oszillator mit einem Frequenzteiler aufweisen, der einen Schrittmotor als Antriebseinrichtung für das Zeigerwerk steuert. Derartige handelsübliche elektronische Uhrwerke haben eine Stromaufnahme von ungefähr 2

Figure imgb0001
A. Als Kondensator 7 wird vorzugsweise ein Elektrolytkondensator von 0,2 F verwendet. Das bietet eine Gangreserve von ungefähr 36 Stunden.The clockwork 4 can in the usual way have an electronic time base with a quartz-controlled oscillator with a frequency divider that controls a stepper motor as a drive device for the pointer mechanism. Such commercially available electronic movements have a current consumption of approximately 2
Figure imgb0001
A. An electrolytic capacitor of 0.2 F is preferably used as the capacitor 7. This offers a power reserve of around 36 hours.

Als Dauermagnete können vorzugsweise Samarium-Kobalt-Magnete verwendet werden, wobei im betrachteten Beispiel die Magnete 11 einen Durchmesser von 3,2 mm und eine axiale Höhe von 1,2 mm und die Magnete 11a einen Durchmesser von 3,0 mm und eine axiale Höhe von 0,6 mm haben, während die Spulen einen Durchmesser von 3,2 mm und eine Höhe von 1,5 mm haben können. Die im allgemeinen erforderliche Stromstabilisierungsschaltung kann auch noch auf der Printplatte 13 untergebracht werden.Samarium-cobalt magnets can preferably be used as permanent magnets, the magnets 11 in the example considered having a diameter of 3.2 mm and an axial height of 1.2 mm and the magnets 11a having a diameter of 3.0 mm and an axial height of 0.6 mm, while the coils can have a diameter of 3.2 mm and a height of 1.5 mm. The generally required current stabilization circuit can also be accommodated on the printed circuit board 13.

Bei einer bevorzugten Ausführungsform beträgt der Durchmesser des Uhrwerks etwa 24 mm, der Aussendurchmesser der Grundplatte 3 etwa 32 mm und der Aussendurchmesser des Gehäuses, also der Gesamtdurchmesser der Uhr, etwa 33 bis 34 mm.In a preferred embodiment, the diameter of the clockwork is approximately 24 mm, the outer diameter of the base plate 3 is approximately 32 mm and the outer diameter of the housing, that is the total diameter of the clock, is approximately 33 to 34 mm.

Wie Figur 1 zeigt, dient die Grundplatte 3 nicht nur als magnetischer Rückschluss, sondern auch als Werkhalter, wobei der Uhrwerkrand auf einer Ringschulter der zentralen topfförmigen Vertiefung aufliegt. Es lassen sich jedoch mit ein und derselben Grundplatte auch ohne weiteres Uhrwerke anderen Kalibers verwenden, wenn ein zusätzlicher angepasster Werkhaltering vorgesehen wird.As FIG. 1 shows, the base plate 3 serves not only as a magnetic yoke, but also as a movement holder, the clockwork rim resting on an annular shoulder of the central pot-shaped depression. However, it is also possible to use movements of a different caliber with one and the same base plate if an additional adapted movement retaining ring is provided.

Die Erfindung ist nicht auf das beschriebene Ausführungsbeispiel beschränkt, sondern lässt insbesondere hinsichtlich der Gestalt der Grundplatte und des Rotors, der Anzahl und Verteilung der Spulen und der Dauermagnete mannigfache Varianten zu. Auch können die Spulen fest im Ringraum 9 und die Dauermagnete auf der Umfangszone 8c des Rotors 8 angeordnet sein. Wesentlich ist, dass bei mehreren Spulen und Dauermagneten der Vorbeigang der bewegten an den feststehenden Teilen des Induktionssystems stets gleichzeitig erfolgt, die Winkelabstände der feststehenden Teile also denen der bewegten Teile entsprechen, um eine maximal mögliche Aufladung des Kondensators zu erhalten.The invention is not limited to the exemplary embodiment described, but rather allows for numerous variants, in particular with regard to the shape of the base plate and the rotor, the number and distribution of the coils and the permanent magnets. The coils can also be arranged permanently in the annular space 9 and the permanent magnets on the peripheral zone 8c of the rotor 8. It is essential that in the case of several coils and permanent magnets, the moving parts always pass the fixed parts of the induction system simultaneously, that is to say the angular spacings of the fixed parts correspond to those of the moving parts in order to obtain the maximum possible charging of the capacitor.

Claims (9)

Elektronische Armbanduhr mit einem das Uhrwerk (4) aufnehmenden Gehäuse (1), einem Kondensator (7) als Stromquelle zur Speisung des Uhrwerks, einem frei drehbaren, mit einer Unwucht (8a) versehenen Rotor (8) sowie einem Induktionssystem aus wenigstens einer, über einen Gleichrichter (18) an den Kondensator (7) angeschlossenen Spule (10) und wenigstens einem Dauermagneten (11), von denen der eine Teil, Spule oder Dauermagnet, vom Rotor relativ zum anderen, feststehenden Teil bewegbar ist, um den Kondensator (7) durch Induktion zu laden, dadurch gekennzeichnet, dass das Induktionssystem in einem das Uhrwerk (4) umgebenden Ringraum (9) angeordnet ist und der um das Gehäusezentrum drehbare Rotor (8) mit seiner Umfangszone (8c) in diesen Ringraum hineinragt und dass der vom Rotor (8) bewegte Teil, Spule (10) oder Dauermagnet, an der erwähnten Umfangszone (8c) des Rotors befestigt ist, während der andere Teil (11) im Ringraum (9) angebracht ist.Electronic wristwatch with a housing (1) accommodating the clockwork (4), a capacitor (7) as a power source for feeding the clockwork, a freely rotatable rotor (8) provided with an imbalance (8a) and an induction system comprising at least one a rectifier (18) connected to the capacitor (7) coil (10) and at least one permanent magnet (11), of which one part, coil or permanent magnet, can be moved by the rotor relative to the other, fixed part, around the capacitor (7 ) by induction, characterized in that the induction system is arranged in an annular space (9) surrounding the clockwork (4) and the rotor (8) rotatable about the housing center with its peripheral zone (8c) protrudes into this annular space and that of the Rotor (8) moving part, coil (10) or permanent magnet, is attached to the aforementioned peripheral zone (8c) of the rotor, while the other part (11) is attached in the annular space (9). Armbanduhr nach Anspruch 1, dadurch gekennzeichnet, dass im Gehäuse (1) eine Grundplatte (3) mit einer im mittleren Bereich (3a) derselben vorgesehenen, topfförmigen Vertiefung, die nach der einen Seite hin offen ist und in welcher das Uhrwerk (4) sitzt, und mit einer im Umfangsbereich (3b) dieser Grundplatte vorgesehenen, nach der anderen Seite hin offenen kreisringförmigen Vertiefung montiert ist, welche den erwähnten Ringraum (9) bildet.Wristwatch according to claim 1, characterized in that in the housing (1) a base plate (3) with a pot-shaped depression provided in the central region (3a) thereof, which is open on one side and in which the clockwork (4) is seated , and is mounted with an annular recess which is provided in the peripheral region (3b) of this base plate and is open towards the other side and forms the annular space (9) mentioned. Armbanduhr nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Rotor (8) auf der Bodenseite des Uhrwerks (4) angeordnet und scheibenförmig ausgebildet ist und in seiner einen Hälfte die Unwucht (8a), vorzugsweise in Form grösserer Materialdicke, aufweist und dass das Induktionssystem aus mehreren Spulen (10) und mehreren Dauermagneten (11) besteht, wobei die einen Teile auf der Umfangszone (8c) des Rotors verteilt und die anderen Teile im erwähnten Ringraum (9) verteilt befestigt sind.Wristwatch according to claim 1 or 2, characterized in that the rotor (8) is arranged on the bottom side of the clockwork (4) and is disc-shaped and in one half has the unbalance (8a), preferably in the form of greater material thickness, and that Multiple coil induction system (10) and a plurality of permanent magnets (11), one part being distributed over the circumferential zone (8c) of the rotor and the other parts being distributed in the said annular space (9). Armbanduhr nach Anspruch 3, dadurch gekennzeichnet, dass der Rotor (8) mehrere, elektrisch parallel geschaltete Spulen (10) trägt, die gleichmässig über seinen Umfang verteilt sind, und dass die erwähnte Grundplatte (3) aus Weicheisen besteht und Dauermagnete (11) trägt, deren Abstand voneinander in Umfangsrichtung dem Spulenabstand entspricht.Wristwatch according to claim 3, characterized in that the rotor (8) carries a plurality of coils (10) which are electrically connected in parallel and are distributed uniformly over its circumference, and in that the base plate (3) mentioned consists of soft iron and carries permanent magnets (11) whose distance from each other in the circumferential direction corresponds to the coil distance. Armbanduhr nach Anspruch 4, dadurch gekennzeichnet, dass im erwähnten Ringraum (9) jeweils Paare von im axialen Abstand einander gegenüberliegenden Dauermagneten (11, 11a) angeordnet sind, und dass die Umfangszone (8c) des Rotors (8) mit den Spulen (10) in den Raum zwischen den beiden Dauermagneten jedes Magnetpaares hineinragt.Wristwatch according to claim 4, characterized in that pairs of permanent magnets (11, 11a) which are axially spaced from one another are arranged in said annular space (9), and that the peripheral zone (8c) of the rotor (8) with the coils (10) protrudes into the space between the two permanent magnets of each magnet pair. Armbanduhr nach Anspruch 5, dadurch gekennzeichnet, dass die magnetischen Achsen der Dauermagnete und die Spulenachsen parallel zur Gehäuseachse orientiert sind und dass die einen Dauermagnete (11) jedes Magnetpaares auf der Grundplatte (3) und die anderen Dauermagnete (11a) jedes Magnetpaares auf einer am Ende der Grundplatte (3) befestigten Ringplatte (12) aus Weicheisen angebracht sind, welche die erwähnte, den Ringraum (9) bildende kreisringförmige Vertiefung wenigstens teilweise überdeckt.Wristwatch according to claim 5, characterized in that the magnetic axes of the permanent magnets and the coil axes are oriented parallel to the housing axis and that the one permanent magnet (11) of each pair of magnets on the base plate (3) and the other permanent magnets (11a) of each pair of magnets on one End of the base plate (3) attached ring plate (12) made of soft iron are attached, which at least partially covers the above-mentioned annular recess forming the annular space (9). Armbanduhr nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass eine der Spulen (10) in ihrem Innern einen Weicheisenkern (10a) aufweist.Wristwatch according to claim 5 or 6, characterized in that one of the coils (10) has a soft iron core (10a) in its interior. Armbanduhr nach einem der Ansprüche 4 bis 7, dadurch gekennzeichnet, dass der Kondensator (7) in einer Ausnehmung des Uhrwerks (4) eingesetzt ist und auf seiner dem Rotor (8) zugewandten Seite eine Printplatte (13) trägt, auf der zwei Kontaktfedern (14, 15), der Gleichrichter (18) und Leiterbahnen (19 bis 22) zwischen den Kontaktfedern und dem Gleichrichter sowie zwischen diesem und den Kondensatorelektrodenanschlüssen, und gegebenenfalls eine Stromstabilisierungsschaltung, angeordnet sind, und dass auf der der Printplatte (13) zugewandten Seite des Rotors (8) zwei an die Spulen (10) angeschlossene ringförmige konzentrische Kontaktbahnen (16, 17) angebracht sind, an denen die erwähnten Kontaktfedern (14, 15) gleitend anliegen.Wristwatch according to one of claims 4 to 7, characterized in that the capacitor (7) is inserted in a recess of the clockwork (4) and on its side facing the rotor (8) carries a printed circuit board (13) on which two contact springs ( 14, 15), the rectifier (18) and conductor tracks (19 to 22) between the contact springs and the rectifier and between the latter and the capacitor electrode connections, and, if appropriate, a current stabilization circuit, are arranged, and that on the side of the printed circuit board (13) Rotors (8) two annular concentric contact tracks (16, 17) connected to the coils (10), against which the mentioned contact springs (14, 15) slide. Armbanduhr nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass vier im gleichen Abstand voneinander angeordnete Spulen (10) und vier im gleichen Abstand voneinander angeordnete Dauermagnete (11) bzw. Dauermagnetpaare (11, 11a) vorgesehen sind.Wristwatch according to one of claims 1 to 8, characterized in that four coils (10) arranged at the same distance from one another and four permanent magnets (11) or permanent magnet pairs (11, 11a) arranged at the same distance from one another are provided.
EP91810805A 1990-10-22 1991-10-18 Wristwatch Expired - Lifetime EP0483065B1 (en)

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DE9216083U1 (en) * 1992-11-26 1993-12-23 Uhrenfabrik Senden GmbH & Co. KG, 89250 Senden Electronic charging circuit for a memory with low self-consumption
EP0665478A1 (en) * 1994-01-26 1995-08-02 Roberto Zafferri Electronic clock
EP0683442A1 (en) * 1994-05-20 1995-11-22 Mondaine Watch Ltd Small electronic watch
EP0851322A1 (en) * 1996-12-23 1998-07-01 Ronda Ag Micro-generator, module and time piece, containing such a micro-generator
EP0805380A4 (en) * 1995-11-21 1998-09-23 Seiko Epson Corp ELECTRONIC CLOCK ARTICLE
CN103797426A (en) * 2011-06-09 2014-05-14 卡迪亚创造工作室股份公司 Mechanism for preventing rate changes caused by gravity acting on a balance-spring regulating device and timepiece incorporating the same improvement
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DE9216083U1 (en) * 1992-11-26 1993-12-23 Uhrenfabrik Senden GmbH & Co. KG, 89250 Senden Electronic charging circuit for a memory with low self-consumption
EP0665478A1 (en) * 1994-01-26 1995-08-02 Roberto Zafferri Electronic clock
CH687287GA3 (en) * 1994-01-26 1996-11-15 Roberto Zafferri Device for producing the energy necessary for the operation of an electronic watch and watch comprising such a device.
US5614779A (en) * 1994-01-26 1997-03-25 Zafferri; Roberto Electronic watch
EP0683442A1 (en) * 1994-05-20 1995-11-22 Mondaine Watch Ltd Small electronic watch
EP0805380A4 (en) * 1995-11-21 1998-09-23 Seiko Epson Corp ELECTRONIC CLOCK ARTICLE
EP0908797A3 (en) * 1995-11-21 2000-12-13 Seiko Epson Corporation Electronic watch
EP0851322A1 (en) * 1996-12-23 1998-07-01 Ronda Ag Micro-generator, module and time piece, containing such a micro-generator
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CN103797426A (en) * 2011-06-09 2014-05-14 卡迪亚创造工作室股份公司 Mechanism for preventing rate changes caused by gravity acting on a balance-spring regulating device and timepiece incorporating the same improvement
CN103797426B (en) * 2011-06-09 2016-10-05 卡地亚国际有限公司 Mechanism for preventing rate changes caused by gravity acting on a balance-spring regulating device and timepiece incorporating the same improvement
CH713599A1 (en) * 2017-03-21 2018-09-28 Sequent Ltd Energy production unit with flywheel.

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US5278806A (en) 1994-01-11
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