EP3985454B1 - Dispositif de remontoir pour montre automatique - Google Patents

Dispositif de remontoir pour montre automatique Download PDF

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Publication number
EP3985454B1
EP3985454B1 EP20201698.6A EP20201698A EP3985454B1 EP 3985454 B1 EP3985454 B1 EP 3985454B1 EP 20201698 A EP20201698 A EP 20201698A EP 3985454 B1 EP3985454 B1 EP 3985454B1
Authority
EP
European Patent Office
Prior art keywords
watch
winding device
measuring means
motorisation
current
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
EP20201698.6A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3985454A1 (fr
Inventor
Michel Willemin
Jérôme Favre
Nicolas LIVAT
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 EP20201698.6A priority Critical patent/EP3985454B1/fr
Priority to US17/246,891 priority patent/US11860582B2/en
Priority to JP2021085052A priority patent/JP7177885B2/ja
Priority to CN202110718271.0A priority patent/CN114355747B/zh
Publication of EP3985454A1 publication Critical patent/EP3985454A1/fr
Application granted granted Critical
Publication of EP3985454B1 publication Critical patent/EP3985454B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D7/00—Measuring, counting, calibrating, testing or regulating apparatus
    • G04D7/006—Testing apparatus for complete clockworks with regard to external influences or general good working
    • G04D7/009—Testing apparatus for complete clockworks with regard to external influences or general good working with regard to the functioning of the automatic winding-up device
    • 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
    • G04C1/00—Winding mechanical clocks electrically
    • G04C1/10—Protection against overwinding
    • G04C1/12—Protection against overwinding of the spring

Definitions

  • the invention relates to an automatic device for winding automatic watches.
  • the invention also relates to a universal device for winding and resetting the time of a watch, comprising such an automatic device for winding watches.
  • the invention relates to the field of smart devices, such as smart winders, for keeping watches immediately fit for service, displaying the correct time, and with a sufficient power reserve to wear them for a few hours, while avoiding premature wear of the watch by incessant and unnecessary windings.
  • one of the developments concerns an intelligent winder, based on the limitation of unnecessary winding of automatic watches, and whose main purpose is to limit the recharging of the automatic barrel of the watch to what is strictly necessary, to avoid any premature wear of the watch. , as a result of excessive pumping over.
  • the amplitude of the balance-spring is measured by an acoustic method.
  • it remains difficult to perform an accurate and reliable measurement of the amplitude, due to the background noise, at a reasonable cost, and with low power consumption.
  • this method requires contact with the measured watch, or at least the installation of an aerial microphone very close to the resonator of the watch, in a low-noise environment.
  • the invention proposes to measure the rate of winding of a mechanical watch with automatic winding, by measuring the influence that the winding mechanism has on the automatic device for winding automatic watches, hereinafter referred to as winder.
  • An advantageous application relates to the production of an intelligent winding mechanism with torque measurement.
  • the invention relates to a winding device for an automatic watch with a mobile oscillating weight, according to claim 1.
  • the invention proposes to complete the acoustic measurement of the amplitude with a measurement of the influence that the winding state of the watch has on the winding mechanism. Indeed, the winding angle of the oscillating weight (also called dead angle) increases with the rate of winding, since the mainspring opposes the torque of the weight.
  • the center of gravity CG of the oscillating mass 10 is eccentric, and is located, with respect to its axis of rotation, on a radial which is here called the radial of the center of mass RCM. If, in a simplified approach, friction is neglected, the system of forces applying to the oscillating weight 10 boils down to the opposition between the restoring torque exerted by the barrel wheel on the one hand, and the torque exerted by the gravitation on the oscillating mass 10.
  • the term "dead angle" is used to refer to the angle AM that this radial of the center of mass RCM makes with the vertical V of the place.
  • this blind angle AM is very small: the straight edge 11 that an oscillating mass 10 generally comprises remains almost horizontal, such than visible on the figure 1 .
  • the dead angle AM is considerably higher (for example 24° more for a standard ETA 2824 movement, well known to those skilled in the art and very widespread), since the torque of the barrel spring is maximum and opposes to the torque of the oscillating mass 10: balance is only possible with a large angle so that the gravitational torque balances that coming from the barrel.
  • this change of angle has the effect of shifting the center of mass of the entire watch, which has a measurable unbalance effect on the crown 100 on which the watch is placed, through a watch holder 1 .
  • Winder 100 is equipped with a direct current motor 21 not speed-controlled, only the supply voltage is constant (imposed by the algorithm).
  • the torque opposed by the watch is at a minimum, and the winding speed is at a maximum.
  • the torque opposed by the watch is at maximum, and the winding speed is at minimum.
  • There picture 3 shows the evolution of the speed of rotation of the winder (in turns per second) as a function of the number of turns of the winder 100, during the complete winding of a watch. It can be seen that this rotation speed decreases by around 0.8% when the watch is fully charged (after around 2000 turns of the winding mechanism).
  • the speed of the winding mechanism 100 is simply performed using a fixed optical sensor 31 and a mobile marker 32 integral with the rotating watch holder 1.
  • Torque measurement is an effective method but more expensive than the previous one.
  • the torque opposed by the oscillating mass 10 increases when the winding increases, until it reaches a plateau when the watch is fully wound.
  • the torque can be measured with a torque tester or torque meter mounted on the watch holder.
  • the advantage of a torque meter is its high sensitivity.
  • the invention relates to a winding device 100 for an automatic watch with a mobile oscillating weight.
  • This device 100 comprises at least one watch holder 1, which is arranged to carry at least one automatic watch.
  • the device 100 comprises motorization means 2 for driving, in particular at least in rotation, the at least one watch holder 1, and more particularly each watch holder 1 that it comprises.
  • the device 100 comprises measuring means 3, which are arranged to measure the variation of the resistive torque which is opposed to the motorization means 2 by a moving assembly consisting, on the one hand, of all the watch holders 1 driven by the motorization means 2, and on the other hand all the watches that all of these same watch holders 1 wear, depending on the degree of winding of the watches.
  • these measuring means 3 comprise speed measuring means 4 for determining the speed and/or the variation in the speed of the means of motorization 2, and/or comprise means for measuring the torque 5 to determine the value of the torque and/or the variation of the torque at the level of at least one watch holder 1, and/or comprise means for measuring the current 6 to determine the value of the current and/or the variation of the current at the level of at least one electric motor 21 that comprises the motorization means 2.
  • the measuring means 3 comprise such speed measuring means 4, which comprise fixed optical means 31 arranged to follow a mobile marker 32 which a watch holder 1 comprises, and which are coupled with a time base 9 , which the winding device 100 comprises or with which the winding device 100 is interfaced.
  • these optical means 31 are arranged to follow an oscillating mass 10 of at least one watch comprising a transparent back allowing the oscillating mass 10, or, more particularly, of each watch equipped with such a transparent back.
  • At least one watch holder 1 is arranged to make visible the oscillating weight 10 of each watch carrying a transparent back that it carries, and viewing means 33 are arranged to follow and/or determine the angular position of an oscillating mass 10 of a given watch between a dead angle corresponding to the disarmed state of the watch and a limit winding angle corresponding to the fully armed state of the watch.
  • the measuring means 3 are then advantageously arranged to send a stop signal to the motorization means 2 when the limit winding angle is reached, to avoid any superfluous winding, and therefore any wear of the watch.
  • the motorization means 2 comprise a direct current electric motor 21, not speed-controlled.
  • the measurement means 3 then comprise speed measurement means 4, which are arranged to send a stop signal to the motorization means 2 when the speed of the motorization means 2 is lower, by a value pre- determined, at the speed of the motorization means 2 at the start of the cycle when at least one watch carried by at least one watch holder 1 is in an unarmed state. More particularly, this pre-determined value is between 0.2% and 1.4%. More particularly still, the pre-determined value is between 0.6% and 1.0%.
  • the measurement means 3 comprise torque measurement means 5, which are arranged to send a stop signal to the motorization means 2 when the value of the measured torque is stabilized with a variation less than a pre-determined threshold. , such as 1.0% in a particular non-limiting variant.
  • the measurement means 3 comprise torque measurement means 5, which are arranged to determine the actual angular position of the center of mass of the moving assembly mentioned above, to compare it with a theoretical angular position corresponding to the fully armed state of each watch, and are arranged to send a stop signal to the motorization means 2 when these actual and theoretical positions are equal.
  • the measurement means 3 comprise current measurement means 6 for determining the value of the current and/or the variation of the current at the level of the motor which the motorization means 2 comprise, in particular an electric motor 21, and which constitute torque measurement means 5.
  • the measuring means 3 comprise such current measuring means 6 to determine the value of the current and/or the variation of the current at the level of the electric motor 21, and which are arranged to send a stop signal to the means of motorization 2 when the current consumption is, for a period greater than 80 seconds, more than 4.0% higher than the consumption at the start of the cycle when at least one watch worn by at least one watch holder 1 is in an unarmed state . More particularly, these measurement means 3 are arranged to send this signal when the current consumption is, for a period of more than 40 seconds, greater than 2.0% higher than the consumption at the start of the cycle when at least one watch worn by at least least one watch holder 1 is in an unarmed state.
  • the measuring means 3 are arranged to determine a difference in resistance according to the direction of rotation of a watch holder 1, and to impose a rotation of the watch holder 1 in the direction in which it presents the greatest resistance. This makes it possible to determine the presence of automatic watches which are designed for winding in one direction only, and for free-wheeling movement in the other direction; thus each movement imparted to the watch holder 1 is effective since it is used for rearming.
  • At least one watch holder 1 carries a single watch. More particularly still, each watch holder 1 carries a single watch.
  • the winding device 100 comprises a single watch holder 1.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
EP20201698.6A 2020-10-14 2020-10-14 Dispositif de remontoir pour montre automatique Active EP3985454B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP20201698.6A EP3985454B1 (fr) 2020-10-14 2020-10-14 Dispositif de remontoir pour montre automatique
US17/246,891 US11860582B2 (en) 2020-10-14 2021-05-03 Winding device for automatic watch
JP2021085052A JP7177885B2 (ja) 2020-10-14 2021-05-20 自動式携行型時計用ワインド用デバイス
CN202110718271.0A CN114355747B (zh) 2020-10-14 2021-06-28 自动手表的上条设备

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20201698.6A EP3985454B1 (fr) 2020-10-14 2020-10-14 Dispositif de remontoir pour montre automatique

Publications (2)

Publication Number Publication Date
EP3985454A1 EP3985454A1 (fr) 2022-04-20
EP3985454B1 true EP3985454B1 (fr) 2023-03-29

Family

ID=72885367

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20201698.6A Active EP3985454B1 (fr) 2020-10-14 2020-10-14 Dispositif de remontoir pour montre automatique

Country Status (4)

Country Link
US (1) US11860582B2 (ja)
EP (1) EP3985454B1 (ja)
JP (1) JP7177885B2 (ja)
CN (1) CN114355747B (ja)

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3018429A (en) * 1959-04-06 1962-01-23 Kollsman Instr Corp Constant speed motor system
CN2240157Y (zh) * 1995-12-06 1996-11-13 王文君 电动机械钟表
US6439761B1 (en) * 2000-12-21 2002-08-27 Charles Agnoff Winder for mechanical watches
JP4402084B2 (ja) 2006-07-31 2010-01-20 株式会社ヒューマン 自動巻き腕時計巻上げ装置
JP5098382B2 (ja) * 2007-03-14 2012-12-12 セイコーエプソン株式会社 発電機能付き電子時計
CN202362594U (zh) * 2011-12-14 2012-08-01 轻工业钟表研究所 一种发条力矩测试装置
WO2014166719A2 (fr) * 2013-04-10 2014-10-16 The Swatch Group Research And Development Ltd Dispositif de remontage de montre à remontage automatique
HK1187199A2 (en) * 2013-10-28 2014-03-28 Ng Ming Sang A self-winding apparatus for self-winding watches
EP2871537B1 (fr) * 2013-11-06 2017-01-04 ETA SA Manufacture Horlogère Suisse Montre à réserve de marche améliorée
CH710458A2 (fr) * 2014-12-10 2016-06-15 Montres Bréguet S A Dispositif de remontage automatique pour ressort de mouvement horloger.
EP3096191B1 (fr) * 2015-05-18 2018-11-14 The Swatch Group Research and Development Ltd. Dispositif intelligent de remontage de montres
WO2018031203A1 (en) * 2016-08-11 2018-02-15 Vayl Technologies Watch winder and method of winding a watch
EP3299908B1 (fr) * 2016-09-27 2019-08-14 The Swatch Group Research and Development Ltd. Montre à remontage automatique
CH713271A2 (fr) 2016-12-22 2018-06-29 Swatch Group Res & Dev Ltd Dispositif intelligent de remontage de montres.
EP3410236B1 (fr) * 2017-05-29 2021-02-17 The Swatch Group Research and Development Ltd Dispositif et procede d'ajustement de marche et correction d'etat d'une montre
EP3422119B1 (fr) * 2017-05-29 2021-06-30 The Swatch Group Research and Development Ltd Dispositif universel de préparation d'une montre
CN107390500A (zh) * 2017-08-21 2017-11-24 广西天睿精工精密电子有限公司 一种由电能转换控制摆轮游丝振荡系统的振荡结构

Also Published As

Publication number Publication date
CN114355747B (zh) 2024-07-30
EP3985454A1 (fr) 2022-04-20
CN114355747A (zh) 2022-04-15
JP2022064818A (ja) 2022-04-26
US20220113682A1 (en) 2022-04-14
US11860582B2 (en) 2024-01-02
JP7177885B2 (ja) 2022-11-24

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