EP3299908B1 - Armbanduhr mit automatischem aufzug - Google Patents

Armbanduhr mit automatischem aufzug Download PDF

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Publication number
EP3299908B1
EP3299908B1 EP16190915.5A EP16190915A EP3299908B1 EP 3299908 B1 EP3299908 B1 EP 3299908B1 EP 16190915 A EP16190915 A EP 16190915A EP 3299908 B1 EP3299908 B1 EP 3299908B1
Authority
EP
European Patent Office
Prior art keywords
watch
drive means
storage unit
watch according
oscillating weight
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.)
Active
Application number
EP16190915.5A
Other languages
English (en)
French (fr)
Other versions
EP3299908A1 (de
Inventor
Lionel TOMBEZ
Jean-Jacques Born
Michel Willemin
Pascal Winkler
Lionel Paratte
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.)
Swatch Group Research and Development SA
Original Assignee
Swatch Group Research and Development 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 Swatch Group Research and Development SA filed Critical Swatch Group Research and Development SA
Priority to EP16190915.5A priority Critical patent/EP3299908B1/de
Priority to JP2017174621A priority patent/JP6437067B2/ja
Priority to US15/710,209 priority patent/US10338527B2/en
Priority to CN201710881264.6A priority patent/CN107870548B/zh
Publication of EP3299908A1 publication Critical patent/EP3299908A1/de
Priority to HK18111215.6A priority patent/HK1251895A1/zh
Application granted granted Critical
Publication of EP3299908B1 publication Critical patent/EP3299908B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • G04B5/00—Automatic winding up
    • G04B5/02—Automatic winding up by self-winding caused by the movement of the watch
    • 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
    • G04B5/00—Automatic winding up
    • G04B5/02—Automatic winding up by self-winding caused by the movement of the watch
    • G04B5/04—Automatic winding up by self-winding caused by the movement of the watch by oscillating weights the movement of which is limited
    • G04B5/08—Automatic winding up by self-winding caused by the movement of the watch by oscillating weights the movement of which is limited acting in both directions
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C1/00—Winding mechanical clocks electrically
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C1/00—Winding mechanical clocks electrically
    • G04C1/04—Winding mechanical clocks electrically by electric motors with rotating or with reciprocating movement
    • G04C1/06—Winding mechanical clocks electrically by electric motors with rotating or with reciprocating movement winding-up springs
    • G04C1/062—Winding mechanical clocks electrically by electric motors with rotating or with reciprocating movement winding-up springs by oscillating movement
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C10/00—Arrangements of electric power supplies in time pieces
    • G04C10/02—Arrangements of electric power supplies in time pieces the power supply being a radioactive or photovoltaic source
    • 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
    • G04B5/00—Automatic winding up
    • G04B5/02—Automatic winding up by self-winding caused by the movement of the watch
    • G04B5/16—Construction of the weights

Definitions

  • the present invention relates to the technical field of automatic winding devices. More specifically, the invention relates to a device for raising a mainspring, for example a timepiece, by means of the ambient light energy by means of a photovoltaic cell.
  • Watch movements require motor means to provide energy to a set of mechanisms for providing at least one time indication.
  • the invention relates to self-winding watch movements using an oscillating mass.
  • the oscillating mass may, depending on the mechanism with which it is associated, either arm the spring using energy that the mass produces only in one direction of rotation, or in both directions of rotation.
  • the oscillating mass is rotatably mounted on an axis with an unbalance.
  • this oscillating mass moves in a first direction of rotation, said arming direction, it drives a gear train that arms a barrel spring.
  • this oscillating mass no longer acts on the transmission train of the spring, it is free in rotation.
  • the mass returns to its equilibrium point thanks to the unbalance after several oscillations which allowed him to arm the spring each time it moved in the direction of the arming.
  • the movement of the arm of the watch wearer can cause rotation in one or the other direction of rotation of the mass so as to recover the energy.
  • the invention particularly aims to overcome the various disadvantages of these known techniques.
  • an object of the invention is to provide an automatic winding device that reduces the torque required to raise the mainspring.
  • Another object of the invention is to wind the watch when it is not worn and thus keep it in operation, as well as to maintain the function of the oscillating mass when it is worn.
  • Yet another object of the invention is to provide a "plug-and-play" device, the invention making it possible to replace the oscillating mass of an existing movement without major changes.
  • the electrical energy storage unit, the control circuit and the drive means are preferably integrated in the oscillating mass.
  • the invention also relates and in particular all timepieces according to the invention.
  • FIG. figure 1 An exemplary embodiment of a watch according to the invention will be described in the context of a particularly advantageous application shown in FIG. figure 1 .
  • the winding device 1 is associated with a conventional mechanical watch movement, the assembly forming an automatic watch in which the winding energy, instead of or in addition to being produced by the movements of the wearer's arm, is provided by the ambient light.
  • the watch will be reassembled, when worn or not, as long as it receives light energy.
  • the winding device 1 uses, for transforming the energy of the natural or artificial ambient light into electrical energy, a photovoltaic cell 3, the cell being able to be placed on the oscillating mass 2 of the watch so as to receive light when the watch is not worn or dial side when worn, the skilled person could also consider a combination of both.
  • the photovoltaic cell 3 may comprise a plurality of elementary cells, for example of the heterojunction type, connected in series and / or in parallel to supply current. This current is likely to vary in large proportions, depending on whether the watch is in dim light or in direct sunlight.
  • An electrical energy storage unit 4 is connected to the photovoltaic cell 3 in order to store the energy produced by this cell.
  • the electrical energy storage unit 4 may be in the form of a rechargeable battery, a supercapacitor, or in the form of a simple ceramic capacitor or an inductor.
  • the photovoltaic cell 3 and the electrical energy storage unit 4 are then connected to the control circuit 5, which supplies drive pulses to drive means 6 at its output.
  • the drive means 6 comprise a brushless micromotor, or a Lavet stepper motor well known in the watch industry, or an axial flow motor for example, or an engine. of piezoelectric type, the micromotor comprising a transmission shaft at the end of which is mounted a pinion 61 arranged to cooperate with a toothed ring 60, or a toothed sector, formed in the watch or assembled on the latter.
  • the micromotor when the micromotor is active, it moves the oscillating mass 2 about the axis A, which has the effect of raising the mainspring by means of a gear train 7 commonly used in mechanical watches with automatic winding.
  • a gear train 7 commonly used in mechanical watches with automatic winding.
  • the drive means 6 comprise a magnetic coupling between a wheel 62, composed of magnets or a monobloc magnet, driven by the micromotor and a ferromagnetic wheel 63 secured to the watch, the magnets of the wheel 62 being attracted by the notches of the toothed wheel 63 which causes the oscillating mass 2 without contact.
  • the force of the magnetic coupling is chosen so as to drive the oscillating mass 2 to a certain torque lower than the maximum torque of the mainspring. This avoids stressing the spring, and let the oscillating mass 2 do its work of reassembly to the worn. In addition, the absence of contact avoids significant stress on the gear teeth in case of shock due to the high inertia of the oscillating mass 2.
  • the current supplied by the photovoltaic cell 3 has the effect of charging the electrical storage unit 4 and increasing its voltage or current.
  • the circuit 5 behaves like a switch, connecting the terminals of the storage unit 4 at the terminals of the drive means 6 during a predetermined time interval.
  • the storage unit 4 then provides a well defined drive pulse to the drive means 6 to advance one or more steps.
  • the transmission can be controlled according to the position of the watch.
  • the effect of the gravity is negligible and the oscillating weight 2 is rotated continuously.
  • the oscillating mass 2 is raised by a certain angle, for example at 90 °, before being released so that the mass 2 oscillates under the effect of gravity until it returns to equilibrium. Once the equilibrium position is reached, the cycle starts again.
  • the micromotor can perform about twenty-five steps per second.
  • the watch has deliberately shaded areas so as to deprive the photovoltaic cell 3 of light periodically, and thus generate pulses necessary for feeding the training means 6.
  • Such variant would for example make it possible to overcome the electronic circuit 5.
  • the electronic circuit 5 comprises means for measuring the quantity of energy supplied and / or the current profile necessary to supply the motor and / or the number of steps taken, in order to detect the moment or the barrel is completely reassembled. This moment detected, the electronic circuit 5 stops sending pulses to the micromotor so as not to wear the mainspring.
  • the watch movement which is associated with the winding device 1 comprises, for its part, a mainspring, a gear driven by the spring, an oscillator oscillated by the gear train to stabilize the rotation of the different moving parts, and a display of the time controlled by this wheel.
  • the barrel spring is finally coupled to the gear train 7 to be armed at each step performed by the drive means 6.
  • the movement and the winding device thus constitute the heart of an autonomous automatic watch not requiring for operate only a sufficient ambient light, typically about 150/200 Lux.
  • the oscillating mass 2 comprises coils for forming itself the rotor of an engine.
  • the stator is formed by a ring comprising several magnets, which allows the oscillating mass 2 to move itself without a motor, the electronic circuit 5 feeding the coils to create a magnetic field.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromechanical Clocks (AREA)

Claims (10)

  1. Automatische Aufzugsuhr mit einem Werk, das einer Vorrichtung (1) zum Aufzug einer Federhausfeder zugeordnet ist, umfassend:
    - eine Schwingmasse (2), die um eine Achse A schwenkt;
    - ein Untersetzungsräderwerk (7), das mit der Schwingmasse (2) zusammenwirkt, um das Drehmoment an das Federhaus zu übertragen;
    - mindestens eine Einheit (4) zum Speichern von elektrischer Energie;
    - mindestens eine Photovoltaikzelle (3), die dazu angeordnet ist, das Umgebungslicht zu empfangen und die Einheit (4) zum Speichern elektrischer Energie zu laden;
    - eine Steuerschaltung (5), die mit den Anschlüssen der Speichereinheit (4) verbunden ist; und
    - Antriebsmittel (6), die mit der Steuerschaltung (5) verbunden sind und mit der Schwingmasse (2) gekoppelt sind, um sie zu verlagern,
    dadurch gekennzeichnet, dass die Einheit (4) zum Speichern elektrischer Energie, die Steuerschaltung (5) und die Antriebsmittel (6) in die Schwingmasse (2) integriert sind.
  2. Uhr nach Anspruch 1, wobei die Antriebsmittel (6) mindestens einen Mikromotor umfassen, der so angeordnet ist, dass er mit der Uhr in einer Weise zusammenwirkt, dass die Schwingmasse (2) um die Achse A verlagert wird.
  3. Uhr nach Anspruch 1 oder 2, wobei die Antriebsmittel (6) einen gezahnten Ring (60) umfassen, der mit der Uhr montiert ist und mit dem mindestens einen Mikromotor zusammenwirkt.
  4. Uhr nach Anspruch 2 oder 3, wobei der mindestens eine Mikromotor eine Antriebswelle aufweist, die ein mit dem gezahnten Ring (60) in Eingriff stehendes Ritzel (61) trägt.
  5. Uhr nach Anspruch 3 oder 4, wobei der gezahnte Ring (60) einen Durchmesser gleich oder etwas größer als der Durchmesser des Werks besitzt.
  6. Uhr nach Anspruch 1, wobei die Antriebsmittel (6) ein mehrpoliges Rad (62) umfassen, das so angeordnet ist, dass es mit der Uhr derart zusammenwirkt, dass die Schwingmasse (2) um die Achse A verlagert wird.
  7. Uhr nach Anspruch 6, wobei die Antriebsmittel (6) einen gezahnten Ring (63) aus einem ferromagnetischen Material umfassen, der mit der Uhr montiert ist und mit dem mehrpoligen Rad (62) zusammenwirkt.
  8. Uhr nach einem der Ansprüche 1 bis 7, wobei die Energiespeichereinheit (4) einen Superkondensator, einen Kondensator, eine Induktivität oder eine Batterie umfasst.
  9. Uhr nach einem der Ansprüche 1 bis 8, wobei die Photovoltaikzelle (3) an der Schwingmasse (2) montiert ist.
  10. Uhr nach einem der Ansprüche 1 bis 8, wobei die Solarzelle (3) an der Uhr montiert ist.
EP16190915.5A 2016-09-27 2016-09-27 Armbanduhr mit automatischem aufzug Active EP3299908B1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP16190915.5A EP3299908B1 (de) 2016-09-27 2016-09-27 Armbanduhr mit automatischem aufzug
JP2017174621A JP6437067B2 (ja) 2016-09-27 2017-09-12 自動巻き式腕時計
US15/710,209 US10338527B2 (en) 2016-09-27 2017-09-20 Self-winding watch
CN201710881264.6A CN107870548B (zh) 2016-09-27 2017-09-26 自动上条手表
HK18111215.6A HK1251895A1 (zh) 2016-09-27 2018-08-31 自動上條手錶

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16190915.5A EP3299908B1 (de) 2016-09-27 2016-09-27 Armbanduhr mit automatischem aufzug

Publications (2)

Publication Number Publication Date
EP3299908A1 EP3299908A1 (de) 2018-03-28
EP3299908B1 true EP3299908B1 (de) 2019-08-14

Family

ID=57018023

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16190915.5A Active EP3299908B1 (de) 2016-09-27 2016-09-27 Armbanduhr mit automatischem aufzug

Country Status (5)

Country Link
US (1) US10338527B2 (de)
EP (1) EP3299908B1 (de)
JP (1) JP6437067B2 (de)
CN (1) CN107870548B (de)
HK (1) HK1251895A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3719588B1 (de) * 2019-04-03 2021-11-03 The Swatch Group Research and Development Ltd Automatisch regulierbarer oszillator einer uhr
EP3865953A1 (de) * 2020-02-17 2021-08-18 The Swatch Group Research and Development Ltd Aufzieh-schwungmasse, die mit einem rotierenden schmuckelement für die automatische bewegung der uhr ausgestattet ist
EP3985454B1 (de) * 2020-10-14 2023-03-29 The Swatch Group Research and Development Ltd Aufziehvorrichtung für automatische armbanduhr
WO2022144194A1 (en) * 2020-12-29 2022-07-07 The Swatch Group Research And Development Ltd Winding mechanism for a watch using a motorized winding mass
EP4024139A1 (de) * 2020-12-29 2022-07-06 The Swatch Group Research and Development Ltd Eingebetteter aufzugsmechanismus für eine uhr

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US6320822B1 (en) * 1997-11-20 2001-11-20 Seiko Epson Corporation Electronic equipment and control method for electronic equipment
JPH11295447A (ja) * 1998-04-08 1999-10-29 Citizen Watch Co Ltd 発電機能付電子時計
JP2001249192A (ja) * 1999-12-27 2001-09-14 Seiko Epson Corp 計時装置及び計時装置の制御方法
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US7626892B2 (en) * 2006-05-01 2009-12-01 Tai-Her Yang Timing device with power winder
EP2360535B1 (de) * 2010-02-24 2012-12-05 Blancpain S.A. Schwungmasse eines Uhrwerks mit automatischem Aufzug und Gangreserve-Anzeigevorrichtung, die in dieser Schwungmasse integriert ist
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CN204360103U (zh) * 2015-01-14 2015-05-27 广东小天才科技有限公司 一种电池集成于表带的手表
EP3163381B1 (de) * 2015-10-26 2019-06-26 The Swatch Group Research and Development Ltd. Automatisches aufziehen einer armbanduhr
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Also Published As

Publication number Publication date
JP6437067B2 (ja) 2018-12-12
EP3299908A1 (de) 2018-03-28
CN107870548B (zh) 2019-12-10
US10338527B2 (en) 2019-07-02
HK1251895A1 (zh) 2019-04-26
CN107870548A (zh) 2018-04-03
JP2018054605A (ja) 2018-04-05
US20180088534A1 (en) 2018-03-29

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