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EP0483065B1 - Montre-bracelet - Google Patents

Montre-bracelet Download PDF

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Publication number
EP0483065B1
EP0483065B1 EP91810805A EP91810805A EP0483065B1 EP 0483065 B1 EP0483065 B1 EP 0483065B1 EP 91810805 A EP91810805 A EP 91810805A EP 91810805 A EP91810805 A EP 91810805A EP 0483065 B1 EP0483065 B1 EP 0483065B1
Authority
EP
European Patent Office
Prior art keywords
rotor
annular
coils
wrist watch
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.)
Expired - Lifetime
Application number
EP91810805A
Other languages
German (de)
English (en)
Other versions
EP0483065A1 (fr
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
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
Application filed by Charles Gigandet Sa filed Critical Charles Gigandet Sa
Publication of EP0483065A1 publication Critical patent/EP0483065A1/fr
Application granted granted Critical
Publication of EP0483065B1 publication Critical patent/EP0483065B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

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

Definitions

  • the invention relates to an electronic wristwatch according to the preamble of claim 1.
  • Such a wristwatch is known from EP-A-0 334 088 and has an induction system in the form of a generator which is mounted inside the clockwork, radially next to the pointer movement.
  • the rotary movement of the rotor which is supported in the center of the housing by means of a ball bearing, is transmitted to the rotor shaft of the generator by means of a gear mechanism.
  • the outer ring of the ball bearing is provided with a toothing which forms a pinion and which meshes with an intermediate pinion which in turn engages in the toothing of a pinion seated on the rotor shaft.
  • EP-A-0 170 303 also discloses a clock generator designed in the form of a structural unit with a rotor having an imbalance, which can be rotated about the centrally located rotor shaft of the generator.
  • the magnet system belonging to the rotor is concentrically attached to this rotor shaft, which in turn is concentrically surrounded by the stator of the generator which carries a ring coil.
  • the rotor has an eccentric peripheral part which essentially forms the unbalance, is angled parallel to the rotor shaft and is laterally spaced in front of the circumference of the annular stator.
  • the arrangement is such that the motion is transferred from the unbalance to the rotor of the generator by means of a loose coupling, which is tensioned by the magnetic fields between the poles of the rotor and the relevant stator poles becomes.
  • a loose coupling which is tensioned by the magnetic fields between the poles of the rotor and the relevant stator poles becomes.
  • a portable electric watch is known from DE-B-1 058 942, which has a space-saving layered structure.
  • an accumulator as a current source and a charging device in the form of a generator with a pendulum rotor are arranged in such a way that the current source and charging device have approximately the same height;
  • An electronic oscillator with a motor driven by it and the clockwork are housed in a second layer arranged above it, the coil arrangement of the oscillator simultaneously forming the coil arrangement of the motor and being arranged rotationally symmetrically on a circumference of the layer.
  • 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 when the rotor is moving, 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 in a housing of a given size can have the maximum possible diameter 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 clockwork, 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 towards 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 pot-shaped depression of the base plate allows clockworks of any caliber and of any type to be easily inserted into the housing and, if necessary, replaced; if a movement with a smaller caliber than the size of the pot-shaped recess 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 imbalance 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 made of a central part 1 with band connections 1a and a base 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 region 3a an upwardly open cup-shaped recess for receiving the clockwork 4 and on its peripheral region 3b an annular recess 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 considered 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, one of which 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 alternating the poles of permanent magnets which follow one another 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 by. 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 has a tendency 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 pulse, 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 rest of the circuit for charging the capacitor 7 is accommodated on a printed circuit board 13, which is fastened on the outwardly facing surface of the capacitor 7, for example by gluing.
  • 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 DC 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 that connect 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, one and the same base plate can also be used without further movements of other calibres 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.

Landscapes

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

Claims (9)

  1. Montre-bracelet électronique munie d'un boîtier (1) contenant le mouvement (4), d'un condensateur (7) comme source de courant pour l'alimentation du mouvement (4), d'un rotor (8) muni d'une masse non équilibrée (8a), tournant librement autour du centre du boîtier et s'étendant par sa partie périphérique (8c) jusqu'à l'intérieur d'un espace annulaire (9) entourant le mouvement (4), ainsi que d'un système inducteur comprenant au moins une bobine (10) reliée au condensateur (7) par l'intermédiaire d'un redresseur de courant (18) et au moins un aimant permanent (11), la bobine ou l'aimant permanent étant entraînable par le rotor pour charger le condensateur (7) par induction, caractérisée en ce que le système inducteur est disposé dans ledit espace annulaire (9) de telle façon que la partie mue par le rotor (8), bobine (10) ou aimant permanent (11), est fixée à la partie périphérique (8c) du rotor (8) et se déplace à l'intérieur de l'espace annulaire (9) et que l'autre partie est fixée dans l'espace annulaire (9).
  2. Montre-bracelet selon la revendication 1, caractérisée en ce qu'une plaque de montage (3) est disposée dans le boîtier (1), cette plaque (3) présentant dans sa partie centrale (3a) un renfoncement en forme de pot, ouvert d'un côté, dans lequel est placé le mouvement (4), et dans sa partie périphérique (3b) un renfoncement annulaire ouvert de l'autre côté formant ledit espace annulaire (9).
  3. Montre-bracelet selon la revendication 1 ou 2, caractérisée en ce que le rotor (8) est disposé sur le côté inférieur du mouvement (4), qu'il est en forme de disque et présente dans une de ses moitiés la masse non équilibrée (8a), de préférence sous la forme d'une plus grande épaisseur de matériau, et que le système inducteur est constitué de plusieurs bobines (10) et de plusieurs aimants permanents (11), certaines de ces pièces étant réparties et fixées sur la partie périphérique (8c) du rotor et les autres étant fixées et réparties dans ledit espace annulaire (9).
  4. Montre-bracelet selon la revendication 3, caractérisée en ce que le rotor (8) porte plusieurs bobines (10) montées électriquement en parallèle et réparties uniformément sur sa périphérie et que ladite plaque de montage (3) est constituée de fer doux et porte des aimants permanents (11), l'espacement angulaire entre deux aimants permanents correspondant à l'espacement entre les bobines.
  5. Montre-bracelet selon la revendication 4, caractérisée en ce que des paires d'aimants permanents (11, 11a) placés l'un en face de l'autre à distance axiale sont disposées dans ledit espace annulaire (9) et que la partie périphérique (8c) du rotor (8) s'étend avec les bobines (10) jusque dans l'espace entre les deux aimants permanents de chaque paire d'aimants.
  6. Montre-bracelet selon la revendication 5, caractérisée en ce que les axes magnétiques des aimants permanents et les axes des bobines sont orientés parallèlement à l'axe du boîtier et qu'un aimant permanent (11) de chaque paire d'aimants est disposé sur la plaque de montage (3) alors que l'autre aimant permanent (11a) de chaque paire d'aimants est disposé sur une plaque annulaire (12) en fer doux fixée à l'extrémité de la plaque de montage (3), cette plaque annulaire (12) recouvrant au moins partiellement le renfoncement annulaire formant l'espace annulaire (9).
  7. Montre-bracelet selon l'une des revendications 5 ou 6, caractérisée en ce qu'une des bobines (10) présente à l'intérieur un noyau de fer doux (10a).
  8. Montre-bracelet selon l'une des revendications 4 à 7, caractérisée en ce que le condensateur (7) est disposé dans une découpe du mouvement (4) et porte sur son côté en regard du rotor (8) une carte de circuits imprimés (13) sur laquelle sont disposés deux ressorts de contact (14, 15), le redresseur de courant (18), et des pistes conductrices (19 à 22) entre les ressorts de contact et le redresseur de courant ainsi qu'entre celui-ci et les bornes des électrodes du condensateur, et le cas échéant un circuit régulateur de courant, et que deux pistes de contact (16, 17) annulaires, concentriques, reliées aux bobines (10), sont disposées sur la partie de la carte de circuits imprimés (13) faisant face au rotor (8), lesdits ressorts de contact (14, 15) étant appuyés sur ces pistes (16, 17) de façon à glisser sur elles.
  9. Montre-bracelet selon l'une des revendications 1 à 8, caractérisée en ce qu'elle comprend quatre bobines (10) disposées à même distance l'une de l'autre, et quatre aimants permanents (11), respectivement paires d'aimants (11, 11a) disposés à même distance les uns des autres.
EP91810805A 1990-10-22 1991-10-18 Montre-bracelet Expired - Lifetime EP0483065B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH335690 1990-10-22
CH3356/90 1990-10-22

Publications (2)

Publication Number Publication Date
EP0483065A1 EP0483065A1 (fr) 1992-04-29
EP0483065B1 true EP0483065B1 (fr) 1995-12-20

Family

ID=4254211

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91810805A Expired - Lifetime EP0483065B1 (fr) 1990-10-22 1991-10-18 Montre-bracelet

Country Status (3)

Country Link
US (1) US5278806A (fr)
EP (1) EP0483065B1 (fr)
DE (1) DE59107118D1 (fr)

Families Citing this family (24)

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DE9216083U1 (de) * 1992-11-26 1993-12-23 Uhrenfabrik Senden GmbH & Co. KG, 89250 Senden Elektronische Ladeschaltung für einen Speicher mit geringer Eigenstromaufnahme
CH687287B5 (fr) * 1994-01-26 1997-05-15 Roberto Zafferri Dispositif de production de l'energie necessaire a la marche d'une montre electronique et montre comprenant un tel dispositif.
CH686474B5 (fr) * 1994-05-04 1996-10-15 Ebauchesfabrik Eta Ag Dispositif de couplage entre une source d'énergie mécanique et une génératrice électrique dans une pièce d'horlogerie.
DE59501881D1 (de) * 1994-05-20 1998-05-20 Mondaine Watch Ltd Elektronische Kleinuhr
JP3174245B2 (ja) * 1994-08-03 2001-06-11 セイコーインスツルメンツ株式会社 電子制御時計
US5540729A (en) * 1994-12-19 1996-07-30 Medtronic, Inc. Movement powered medical pulse generator having a full-wave rectifier with dynamic bias
CN1124526C (zh) * 1995-11-21 2003-10-15 精工爱普生株式会社 电子钟表
US5684761A (en) * 1996-02-02 1997-11-04 Industrial Technology Research Institute Swinging type power generator
DE59605259D1 (de) * 1996-12-23 2000-06-21 Ronda Ag Mikrogenerator, Modul und Uhrwerk, enthaltend einen solchen Mikrogenerator
US6806808B1 (en) 1999-02-26 2004-10-19 Sri International Wireless event-recording device with identification codes
US6617963B1 (en) 1999-02-26 2003-09-09 Sri International Event-recording devices with identification codes
US7034660B2 (en) * 1999-02-26 2006-04-25 Sri International Sensor devices for structural health monitoring
GB2354646A (en) * 1999-09-22 2001-03-28 John Fagbola Battery housed kinetic generator
CH713523B1 (fr) * 2001-11-26 2018-09-14 Ebauchesfabrik Eta Ag Objet électronique portatif tel qu'une pièce d'horlogerie susceptible d'être porté au poignet.
DE60314142T2 (de) * 2003-10-01 2008-01-24 Asulab S.A. Uhr mit einem mechanischen Uhrwerk, das mit einem elektronischen Regulator gekoppelt ist
US8405235B2 (en) * 2009-05-13 2013-03-26 Ienergy Harvesting, Inc. Energy harvesting device
IT1403105B1 (it) * 2010-12-15 2013-10-04 Corvino Struttura di orologio da polso.
EP2533109B1 (fr) * 2011-06-09 2019-03-13 Cartier International AG Mécanisme évitant les variations de marche dues à la gravitation sur un dispositif réglant à balancier-spiral et pièce d'horlogerie incorporant ce perfectionnement
WO2014166719A2 (fr) * 2013-04-10 2014-10-16 The Swatch Group Research And Development Ltd Dispositif de remontage de montre à remontage automatique
EP3163381B1 (fr) * 2015-10-26 2019-06-26 The Swatch Group Research and Development Ltd. Remontage automatique d'une montre
US20170364038A1 (en) * 2016-06-15 2017-12-21 Yehuda Fulda Kinetic Powered Smartwatch
EP3299908B1 (fr) * 2016-09-27 2019-08-14 The Swatch Group Research and Development Ltd. Montre à remontage automatique
CH713599A1 (de) * 2017-03-21 2018-09-28 Sequent Ltd Energieerzeugungseinheit mit Schwungmasse.
US12451718B2 (en) * 2021-12-21 2025-10-21 Google Llc Wearable computing device having a charging system for a rechargeable battery

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EP0170303A1 (fr) * 1984-07-03 1986-02-05 Kinetron B.V. Système d'alimentation en énergie électrique d'un dispositif portatif miniaturisé à consommation d'énergie
EP0334088A1 (fr) * 1988-03-21 1989-09-27 Le Phare-Jean D'eve S.A. Montre

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US3518506A (en) * 1967-12-06 1970-06-30 Ibm Semiconductor device with contact metallurgy thereon,and method for making same
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DE2751797A1 (de) * 1977-11-19 1979-05-23 Quarz Zeit Ag Elektrische uhr, insbesondere armbanduhr

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
EP0170303A1 (fr) * 1984-07-03 1986-02-05 Kinetron B.V. Système d'alimentation en énergie électrique d'un dispositif portatif miniaturisé à consommation d'énergie
EP0334088A1 (fr) * 1988-03-21 1989-09-27 Le Phare-Jean D'eve S.A. Montre

Also Published As

Publication number Publication date
US5278806A (en) 1994-01-11
EP0483065A1 (fr) 1992-04-29
DE59107118D1 (de) 1996-02-01

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