EP3901707B1 - Mecanisme d'echappement d'une piece d'horlogerie - Google Patents

Mecanisme d'echappement d'une piece d'horlogerie Download PDF

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Publication number
EP3901707B1
EP3901707B1 EP20171015.9A EP20171015A EP3901707B1 EP 3901707 B1 EP3901707 B1 EP 3901707B1 EP 20171015 A EP20171015 A EP 20171015A EP 3901707 B1 EP3901707 B1 EP 3901707B1
Authority
EP
European Patent Office
Prior art keywords
escapement
impulse
wheel
escapement mechanism
pinion
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
EP20171015.9A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3901707A1 (fr
Inventor
M. Ivan VILLAR
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.)
ETA Manufacture Horlogere Suisse SA
Original Assignee
ETA Manufacture Horlogere Suisse 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 ETA Manufacture Horlogere Suisse SA filed Critical ETA Manufacture Horlogere Suisse SA
Priority to EP20171015.9A priority Critical patent/EP3901707B1/fr
Priority to US17/182,350 priority patent/US11796962B2/en
Priority to JP2021041072A priority patent/JP7132383B2/ja
Priority to KR1020210042849A priority patent/KR102653606B1/ko
Priority to RU2021111500A priority patent/RU2765767C1/ru
Priority to CN202110435826.0A priority patent/CN113552790B/zh
Publication of EP3901707A1 publication Critical patent/EP3901707A1/fr
Application granted granted Critical
Publication of EP3901707B1 publication Critical patent/EP3901707B1/fr
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
    • G04B1/00—Driving mechanisms
    • 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
    • G04B15/00—Escapements
    • G04B15/06—Free escapements
    • G04B15/08—Lever escapements
    • 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
    • G04B15/00—Escapements
    • G04B15/14—Component parts or constructional details, e.g. construction of the lever or the escape wheel
    • 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
    • G04B13/00—Gearwork
    • G04B13/02—Wheels; Pinions; Spindles; Pivots
    • 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
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/04—Oscillators acting by spring tension
    • G04B17/06—Oscillators with hairsprings, e.g. balance

Definitions

  • the invention relates to an escapement mechanism for a timepiece.
  • the invention also relates to a watch movement comprising such an escapement mechanism.
  • the invention finally relates to a timepiece comprising such a watch movement.
  • the timepiece is for example a watch, a clock.
  • the escapement In the field of watch movements, systems providing the escapement function are known.
  • the escapement is conventionally placed between the energy source of the watch movement and the balance-spring type oscillator.
  • the purpose of the escapement is to count and maintain the oscillations of the balance spring.
  • a Swiss anchor type escapement in certain mechanical watches.
  • Such a Swiss lever escapement includes an escape wheel (also called an escape wheel), an anchor provided with entry and exit lifts, and a double plate.
  • the Swiss anchor escapement transmits the forces of the escape wheel to the balance wheel through lever effects and inclined sliding planes of the escape wheel on the pallet.
  • the teeth of the anchor wheel thus perform an impulse function on the anchor lifts.
  • such a force transmission principle is also the weak point of this type of escapement.
  • a known solution consists of providing a coaxial escapement system with an anchor in the watch mechanism.
  • the system typically comprises a triple coaxial wheel comprising a first escape wheel, a second escape wheel (also called impulse pinion) and a drive pinion mounted coaxially in this order.
  • the system also includes an intermediate wheel meshing with the drive pinion; as well as a balance plate, integral with a sprung balance.
  • the balance plate carries a plate pin and a direct impulse vane arranged to cooperate with the first escape wheel.
  • the anchor includes an anchor inlet cooperating with the plate pin, an impulse vane arranged to cooperate with the impulse pinion, and rest vanes arranged to cooperate with the first escape wheel.
  • the coaxial lever escapement system transmits energy to the balance spring in the clockwise and counterclockwise directions of the balance oscillations.
  • a pulse is transmitted clockwise directly from a tooth of the first escape wheel to the plate.
  • Counterclockwise the impulse is delivered to the plate via the anchor, more precisely via the action of a tooth of the impulse pinion on the impulse paddle of the anchor, then of the anchor inlet on the chainring pin.
  • the first escape wheel is at rest on the rest pallets and the balance wheel performs its oscillations freely, without disturbance.
  • Such a coaxial exhaust mechanism Via its tangential force transmission system, such a coaxial exhaust mechanism is not dependent on lubrication for maintain the operating conditions of the mechanism. This system works like a gear and does not require any lubrication to transmit force. A significant factor of variation is therefore eliminated and contributes to a relatively stable gait in the movement.
  • Such a coaxial escapement mechanism also allows constant transmission over time of the maintenance force of the sprung balance, and allows constant maintenance of the amplitude of the latter. It is therefore no longer necessary, unlike the Swiss anchor type escapement, to have very high amplitudes at nine. Step errors in positions are thus reduced. Finally, this coaxial escapement mechanism allows a profitable reduction in the lifting angle of the balance wheel compared to the Swiss anchor escapement.
  • the lift angle is in fact reduced from 52 degrees for the Swiss anchor escapement to 37 degrees for the coaxial escapement. This ensures less disturbance of the balance at each alternation of the latter, compared to the Swiss anchor escapement. The result is consistency in the adjustment qualities of the watch and its precision.
  • Such a coaxial escapement mechanism is therefore particularly intended for the manufacture of high-precision chronometers.
  • the patent document EP 1 045 297 A1 offers a dual coaxial impeller exhaust system.
  • the system described in this document in fact comprises a double coaxial wheel comprising a first escape wheel and a second escape wheel.
  • the system also includes an intermediate wheel meshing with the second escape wheel.
  • the anchor includes an anchor inlet cooperating with the plate pin, an impulse vane arranged to cooperate with the second escape wheel, and rest vanes arranged to cooperate with the first escape wheel.
  • the second escape wheel has a dual function: that of a drive pinion meshing with the intermediate wheel and that of the escape wheel cooperating with the anchor impulse pallet.
  • the invention therefore aims to provide an escapement mechanism for a timepiece which comprises a watch movement provided with a balance, making it possible to increase the inertia of the balance while limiting the overall size and volume. of movement, and while retaining all the latitude for optimization on the number of teeth and the profile of the drive pinion.
  • the invention relates to an escapement mechanism for a timepiece, which comprises the characteristics mentioned in independent claim 1.
  • the escape mechanism according to the invention makes it possible to lower the board of the intermediate wheel (which is typically the seconds wheel for a watch) into the watch movement. This advantageously frees up space in the movement, which makes it possible to increase the volume and therefore the inertia of the balance wheel.
  • the quality of isochronism is therefore improved in the watch movement, and rate variations reduced, while obtaining a very compact setting for the escapement mechanism.
  • the impulse vane of the anchor has a height such that said impulse vane extends at the level of the teeth of the impulse pinion. This allows meshing between the anchor and the impulse pinion.
  • the invention also relates to a watch movement comprising the escapement mechanism, and which comprises the characteristics mentioned in dependent claim 8.
  • the invention also relates to a timepiece comprising the watch movement described above, and which comprises the characteristics mentioned in dependent claim 9.
  • THE figures 1 , 4a , 4b And 5 represent a part of a timepiece 1, which comprises a watch movement 2.
  • the timepiece 1 is typically a watch, a clock.
  • the watch movement 2 comprises an oscillator provided with a balance and a hairspring (not shown), an energy source (not shown) and an escapement mechanism 4 placed between the energy source and the oscillator.
  • the escape mechanism illustrated in figures 1 to 4b is a coaxial escapement 4, and comprises a triple coaxial wheel 6, an intermediate wheel 8, a balance plate (not shown) and an anchor 12.
  • the escapement mechanism illustrated in figure 5 is a classic escapement comprising two levels with an anchor 12, an escape wheel and a balance wheel.
  • the triple coaxial wheel 6 comprises a first escape wheel 14, a drive pinion 16 and a second escape wheel 18 called impulse pinion.
  • the first escapement wheel 14, the drive pinion 16 and the impulse pinion 18 are mounted on a same axis X1. More precisely, the first escape wheel 14, the drive pinion 16 and the impulse pinion 18 are mounted coaxially, in this order, on the axis X1. In other words, the drive pinion 16 is mounted coaxially on the first escape wheel 14, and the impulse pinion 18 is mounted coaxially on the drive pinion 16.
  • the coaxial escape mechanism 4 advantageously makes it possible to lower the board (not shown) of the intermediate wheel 8 into the watch movement 2, at the level of the drive pinion 16.
  • This advantageously frees up space in the watch movement 2, which makes it possible to increase the volume and therefore the inertia of the balance wheel.
  • the quality of isochronism is therefore improved in watch movement 2, and the rate variations reduced, while obtaining a very compact setting for the escapement mechanism 4.
  • the intermediate wheel 8 meshes with the drive pinion 16, and transmits the driving force to the latter.
  • the intermediate wheel 8 can be the last wheel of the finishing train driven by the barrel of the watch movement 2, typically the seconds wheel.
  • the balance plate (which is not shown in the figures) is integral with the oscillator formed by the balance and the hairspring.
  • the balance plate carries a plate pin and a direct impulse vane (not shown).
  • the tray peg is made of ruby.
  • the direct impulse vane is arranged to cooperate with the teeth of the first escape wheel 14.
  • the direct impulse vane consists of a ruby lift.
  • the anchor 12 comprises a support 23, an anchor inlet 24, an impulse vane 26, and first and second rest vanes 28a, 28b.
  • the anchor 12 is pivotally mounted in the watch movement 2. More precisely, the support 23 of the anchor 12 comprises an axis 30 provided with pivots 32, preferably lubricated.
  • the anchor 12 is coplanar with the drive pinion 16.
  • the anchor inlet 24 cooperates with the plate pin. To do this, the anchor inlet 24 comprises for example a fork 34 configured to cooperate with the plate pin.
  • the impulse vane 26 is arranged to cooperate with the teeth of the impulse pinion 18.
  • the impulse vane 26 has a height h1 such that the impulse vane 26 extends at the level of the teeth of the impulse pinion 18, opposite the rest vanes 28a, 28b relative to the support 23, the height being measured along the axis X1.
  • the first and second rest pallets 28a, 28b extend on the side of the first escape wheel 14, and are each arranged to cooperate with the teeth of the first escape wheel 14.
  • the impulse vane 26 and/or the first and second rest vanes 28a, 28b each consist of a ruby lift. More precisely, as illustrated in the figures 1 to 4b , each of the pallets 26, 28a, 28b is made of a single piece ruby stone engaged in a groove 36 made in the thickness of the anchor 12.
  • the invention also relates to a watch movement 2 comprising an escapement mechanism 4 as described above and a sprung balance, the balance plate of the coaxial escapement mechanism 4 being integral with the sprung balance.
  • the invention also relates to a timepiece 1 comprising such a watch movement 2.
EP20171015.9A 2020-04-23 2020-04-23 Mecanisme d'echappement d'une piece d'horlogerie Active EP3901707B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP20171015.9A EP3901707B1 (fr) 2020-04-23 2020-04-23 Mecanisme d'echappement d'une piece d'horlogerie
US17/182,350 US11796962B2 (en) 2020-04-23 2021-02-23 Escapement mechanism of a timepiece
JP2021041072A JP7132383B2 (ja) 2020-04-23 2021-03-15 時計の脱進機機構
KR1020210042849A KR102653606B1 (ko) 2020-04-23 2021-04-01 타임피스의 탈진 기구
RU2021111500A RU2765767C1 (ru) 2020-04-23 2021-04-22 Спусковой механизм часов
CN202110435826.0A CN113552790B (zh) 2020-04-23 2021-04-22 钟表的擒纵机构

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20171015.9A EP3901707B1 (fr) 2020-04-23 2020-04-23 Mecanisme d'echappement d'une piece d'horlogerie

Publications (2)

Publication Number Publication Date
EP3901707A1 EP3901707A1 (fr) 2021-10-27
EP3901707B1 true EP3901707B1 (fr) 2024-02-28

Family

ID=70417411

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20171015.9A Active EP3901707B1 (fr) 2020-04-23 2020-04-23 Mecanisme d'echappement d'une piece d'horlogerie

Country Status (6)

Country Link
US (1) US11796962B2 (zh)
EP (1) EP3901707B1 (zh)
JP (1) JP7132383B2 (zh)
KR (1) KR102653606B1 (zh)
CN (1) CN113552790B (zh)
RU (1) RU2765767C1 (zh)

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0018796B1 (en) 1979-04-30 1984-11-07 George Daniels Watches, clocks and chronometers and escapements therefor
DE69909236T2 (de) 1999-04-12 2004-04-22 Omega S.A. Koaxiale Ankerhemmung
TWI461865B (zh) * 2006-06-23 2014-11-21 Omega Sa 用於機械式時計機心之擺輪游絲調節系統及具有此系統之時計
EP1998236B1 (fr) * 2007-05-30 2010-07-28 Omega SA Echappement à ancre pour pièce d'horlogerie
CN100587627C (zh) * 2007-07-02 2010-02-03 天津海鸥表业集团有限公司 一种机械手表的擒纵机构
JP2011102780A (ja) 2009-11-11 2011-05-26 Seiko Instruments Inc 時計用部品および時計
EP2400351B1 (fr) * 2010-06-22 2013-09-25 Omega SA Mobile monobloc pour une pièce d'horlogerie
CH704764A2 (fr) * 2011-03-31 2012-10-15 Cartier Creation Studio Sa Mécanisme d'échappement notamment pour mouvement d'horlogerie.
CH706543B1 (fr) * 2012-05-18 2017-12-29 Nivarox Far Sa Mécanisme d'échappement d'horlogerie comportant des moyens de découplage entre le pignon et la roue d'échappement.
CH706532B1 (fr) * 2012-11-26 2013-11-29 Detra Sa Zi Echappement à ancre pour pièce d'horlogerie.
JP6210535B2 (ja) * 2013-07-25 2017-10-11 セイコーインスツル株式会社 脱進機、時計用ムーブメントおよび時計
JP6178160B2 (ja) * 2013-08-20 2017-08-09 セイコーインスツル株式会社 トルク調整装置、ムーブメント及び機械式時計
JP6347439B2 (ja) * 2014-03-06 2018-06-27 セイコーインスツル株式会社 脱進機、時計用ムーブメントおよび時計
CH709609B1 (fr) * 2014-05-08 2018-04-30 Nivarox Sa Mécanisme d'échappement d'horlogerie sans lubrification.
EP2977830B1 (fr) * 2014-07-23 2017-08-30 Nivarox-FAR S.A. Mécanisme d'échappement à force constante
DE102015122613B4 (de) * 2015-12-22 2020-07-23 Lange Uhren Gmbh Sekundensprungeinrichtung einer Uhr
JP6558761B1 (ja) 2018-06-19 2019-08-14 セイコーインスツル株式会社 脱進機、時計用ムーブメント及び時計

Also Published As

Publication number Publication date
RU2765767C1 (ru) 2022-02-02
EP3901707A1 (fr) 2021-10-27
JP2021173752A (ja) 2021-11-01
KR20210131881A (ko) 2021-11-03
KR102653606B1 (ko) 2024-04-01
JP7132383B2 (ja) 2022-09-06
US11796962B2 (en) 2023-10-24
CN113552790B (zh) 2022-11-18
US20210333758A1 (en) 2021-10-28
CN113552790A (zh) 2021-10-26

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