EP2919076A1 - Dispositif d'entraînement d'un indicateur analogique, notamment d'un anneau des quantièmes - Google Patents

Dispositif d'entraînement d'un indicateur analogique, notamment d'un anneau des quantièmes Download PDF

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Publication number
EP2919076A1
EP2919076A1 EP14158625.5A EP14158625A EP2919076A1 EP 2919076 A1 EP2919076 A1 EP 2919076A1 EP 14158625 A EP14158625 A EP 14158625A EP 2919076 A1 EP2919076 A1 EP 2919076A1
Authority
EP
European Patent Office
Prior art keywords
toothing
pins
drive wheel
movement according
support
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.)
Withdrawn
Application number
EP14158625.5A
Other languages
German (de)
English (en)
French (fr)
Inventor
Baptist Wyssbrod
Julien Christan
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 SA Manufacture Horlogere Suisse
Original Assignee
ETA SA Manufacture Horlogere Suisse
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 SA Manufacture Horlogere Suisse filed Critical ETA SA Manufacture Horlogere Suisse
Priority to EP14158625.5A priority Critical patent/EP2919076A1/fr
Priority to EP15156373.1A priority patent/EP2919077B1/fr
Priority to US14/637,836 priority patent/US9411311B2/en
Priority to JP2015044600A priority patent/JP5947937B2/ja
Priority to CN201510101356.9A priority patent/CN104914703B/zh
Publication of EP2919076A1 publication Critical patent/EP2919076A1/fr
Priority to HK16102915.0A priority patent/HK1215077A1/zh
Withdrawn legal-status Critical Current

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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
    • 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
    • G04B13/00—Gearwork
    • G04B13/02—Wheels; Pinions; Spindles; Pivots
    • G04B13/027—Wheels; Pinions; Spindles; Pivots planar toothing: shape and design
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C17/00—Indicating the time optically by electric means
    • G04C17/005—Indicating the time optically by electric means by discs
    • G04C17/0058—Indicating the time optically by electric means by discs with date indication
    • G04C17/0066—Indicating the time optically by electric means by discs with date indication electromagnetically driven, e.g. intermittently

Definitions

  • the present invention relates to the field of watch movements having an analog display.
  • the invention relates to a drive device for an analog indicator, in particular a date ring.
  • analog indicators Various drive devices of an analog indicator are known to those skilled in the art.
  • a known problem of analog indicators comes from the fact that they are driven by a drive device generally comprising intermediate elements between a motor and the analog indicator. In the case where separate and stationary display positions are provided for a certain period of time, given the manufacturing tolerances and the necessary clearance between the various elements of the driving device, the precise positioning of the indicator is not possible. not guaranteed without holding means in position.
  • the object of the present invention is to provide a device for driving an analogue indicator, in particular a date ring, which makes it possible to ensure accurate positioning of the indicator and, in the case of shocks, to resist properly without require positioning jumper.
  • the subject of the present invention is a watch movement equipped with an analog indicator comprising a toothing mechanically coupled to a driving device.
  • the latter comprises a motor, a drive wheel provided with meshing means with the toothing and a support on which is mounted the drive wheel.
  • the support of the drive wheel is mounted on a base pivoting about a first axis and defines a second axis, remote from the first axis, around which the drive wheel is rotatably mounted.
  • the driving device further comprises an elastic means exerting a force on the support so that the meshing means of the driving wheel press against the toothing of the analog indicator, these meshing means and the toothing having respective profiles selected so that, at least in determined display positions of the analog indicator, the drive wheel and the analog indicator meshing substantially without tangential play under the action of the resilient means.
  • the elastic means is, in a variant, formed by a spring blade which presses laterally against the support of the drive wheel.
  • the drive device comprises a motor, of which only the pinion of its rotor 9 is shown in the figures, an intermediate wheel 10 and a drive wheel 8 or 8A of the date ring.
  • the engine is in a first variant a mechanical engine of the barrel type, while in another variant there is provided a clockwise electromechanical motor.
  • the intermediate wheel 10 is arranged between the rotor 9 of the motor and the drive wheel, its pinion meshing with this drive wheel.
  • the drive wheel 8 or 8A is provided with two pins which rise from the central part of this wheel and which are aligned on a diameter of this drive wheel. These two pins form meshing means of the drive wheel with the internal toothing 18 of the date ring.
  • the two pins 12 and 13 are respectively provided with two rollers 14 and 15.
  • both pins 12A and 13A do not have rollers.
  • meshing means there are mechanical coupling means between the date ring and the drive wheel.
  • the meshing means are constituted here on the one hand by the two pins, where appropriate provided with their respective rollers, and on the other hand by the internal toothing 18 of the date ring.
  • the drive wheel 8 or 8A is mounted on a support 22 which has a fixed pivot 34 arranged on a base 32 of larger diameter, this base defining a stop on which the drive wheel rests.
  • the fixed pivot defines the axis of rotation 36 of this drive wheel which has a central hole 38 in which is introduced this fixed pivot.
  • the support is mounted on a plate 24 and pivots about a pivot axis 26 which is defined by a shaft 28 passing through the support.
  • the axis of rotation 36 is remote from the pivot axis 26 so that the axis of the drive wheel follows a circular arc when the support pivots.
  • the intermediate wheel 10 is also mounted on the pivoting support 22 and its axis of rotation coincides with the pivot axis 26 of this support.
  • the axis of rotation of this intermediate wheel remains fixed relative to the plate 24 when the support 22 pivots; which makes it possible to ensure the coupling to the rotor 9 of the motor regardless of the angular position of the support.
  • the drive wheel Since the date ring partially passes over the drive wheel and the intermediate wheel, the drive wheel is held axially in position by the date ring and the intermediate wheel is held axially in position by a button 30 forming a stop. So that this button can be below of the date ring, the central part of the drive wheel has the shape of a truncated cone. This makes it possible to obtain a difference in level between the toothing of the drive wheel and the two pins of this drive wheel and thus to have a space for the button above the pinion of the intermediate wheel.
  • the drive device further comprises a spring blade 40 which exerts a force on the support 22 so that the two pins laterally press on the toothing 18 of the date ring towards the bottom of this toothing.
  • the spring blade is in tension and bears against a lateral surface of the support 22 so as to exert a certain force torque on the latter.
  • Other types of spring or other alternative elastic means for obtaining the torque of force necessary for the given function can be provided by the person skilled in the art.
  • the teeth of the date ring have a profile with teeth 19 having recesses 20 between them, this profile being arranged to cooperate with the two pins or, where appropriate, the two rollers so that when both pins (provided or not with rolling rollers) are in a tangential orientation relative to the date ring, the drive wheel and the date ring meshing substantially without tangential play under the action of the spring blade 40.
  • the recesses 20 are provided to allow to accommodate the pins 12 and 13 provided with their rollers with a very small tangential clearance when the two rollers press against the bottom of the toothing, that is to say here against the bottom recesses 20.
  • the display positions determined here the positions of the date ring corresponding to the display of different dates in a window of a dial for the watch movement according to the invention, correspond to an orientation Tangential of the two pins of the drive wheel.
  • the drive device according to the invention jointly ensures the training of the ring of the calendars. and a precise positioning thereof in the display positions of the different dates.
  • the drive device especially in the preferred embodiment with a drive wheel provided with two pins which are aligned with a diameter of this drive wheel, the drive device further forms a high performance shockproof system. Indeed, during a shock producing a torque force on the date ring, the drive wheel exerts a reaction force that keeps the date ring in position.
  • the drive wheel has more than two pins, in particular three or four pins, arranged equidistantly on a circle whose center of rotation is the axis of rotation. of this drive wheel.
  • These pins can also be provided in a variant of rollers.
  • the drive device is similar to the embodiment described using the Figures 1 to 3 .
  • FIG. 4 and 5 are shown two variants of the combination of a profile of the tooth 18A of the date ring and two adjacent pins meshing with this toothing 18A.
  • the teeth 19A of the toothing have non-parallel flanks each defining a monotonically increasing curve relative to the central axis 44 of the corresponding tooth in the direction of the bottom of this toothing.
  • the distance L1 between the two pins 12A and 13A or, where appropriate, the distance L2 between the two respective rollers 14 and 15 is provided so as to have, in the determined display positions of the date ring, two points.
  • the average angular aperture defined by the tooth flanks and the depth of the toothing are selected so that, throughout the tolerance range (ie the various accumulated tolerances), the pins or, where appropriate the rollers do not come into abutment at the bottom of the recesses 20A of the toothing.
  • the watch movement comprises a control unit arranged to drive this electromagnetic motor, preferably in an accelerated mode when passing from a display position to a position of a motor. next display of the date ring.
  • the transitional periods are short-lived; which limits the risk of shock when rotating the drive wheel.
  • a moment of force exerted on the ring generates a moment of force on the drive wheel which has only one pin in the teeth.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromechanical Clocks (AREA)
EP14158625.5A 2014-03-10 2014-03-10 Dispositif d'entraînement d'un indicateur analogique, notamment d'un anneau des quantièmes Withdrawn EP2919076A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP14158625.5A EP2919076A1 (fr) 2014-03-10 2014-03-10 Dispositif d'entraînement d'un indicateur analogique, notamment d'un anneau des quantièmes
EP15156373.1A EP2919077B1 (fr) 2014-03-10 2015-02-24 Dispositif d'entraînement d'un indicateur analogique, notamment d'un anneau des quantiemes
US14/637,836 US9411311B2 (en) 2014-03-10 2015-03-04 Device for driving an analogue indicator, particularly a date ring
JP2015044600A JP5947937B2 (ja) 2014-03-10 2015-03-06 特に日付リングであるアナログインジケータを駆動するためのデバイス
CN201510101356.9A CN104914703B (zh) 2014-03-10 2015-03-09 用于驱动模拟指示器、尤其是日期环的装置
HK16102915.0A HK1215077A1 (zh) 2014-03-10 2016-03-14 用於驅動模擬指示器、尤其是日期環的裝置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14158625.5A EP2919076A1 (fr) 2014-03-10 2014-03-10 Dispositif d'entraînement d'un indicateur analogique, notamment d'un anneau des quantièmes

Publications (1)

Publication Number Publication Date
EP2919076A1 true EP2919076A1 (fr) 2015-09-16

Family

ID=50238257

Family Applications (2)

Application Number Title Priority Date Filing Date
EP14158625.5A Withdrawn EP2919076A1 (fr) 2014-03-10 2014-03-10 Dispositif d'entraînement d'un indicateur analogique, notamment d'un anneau des quantièmes
EP15156373.1A Active EP2919077B1 (fr) 2014-03-10 2015-02-24 Dispositif d'entraînement d'un indicateur analogique, notamment d'un anneau des quantiemes

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP15156373.1A Active EP2919077B1 (fr) 2014-03-10 2015-02-24 Dispositif d'entraînement d'un indicateur analogique, notamment d'un anneau des quantiemes

Country Status (5)

Country Link
US (1) US9411311B2 (zh)
EP (2) EP2919076A1 (zh)
JP (1) JP5947937B2 (zh)
CN (1) CN104914703B (zh)
HK (1) HK1215077A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3193217A1 (fr) * 2016-01-18 2017-07-19 ETA SA Manufacture Horlogère Suisse Mouvement horloger comprenant un affichage analogique

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3627241B1 (fr) * 2016-07-05 2022-02-16 Montres Breguet S.A. Mécanisme d'affichage à rouleau pour montre
CN108459489B (zh) * 2017-02-17 2021-06-15 精工电子有限公司 机构模块、机芯以及钟表

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2124471A1 (zh) * 1971-02-05 1972-09-22 Suisse Horlogerie
US4198808A (en) * 1977-06-03 1980-04-22 Citizen Watch Co., Ltd. Calendar timepiece
JPS60173491A (ja) * 1985-01-21 1985-09-06 Citizen Watch Co Ltd 月末無修正機構付電子時計
GB2205181A (en) * 1987-05-25 1988-11-30 Rolex Montres Day or date setting mechanism for a watch

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS487095Y1 (zh) * 1969-10-01 1973-02-23
CH1019271A4 (zh) * 1971-07-12 1974-10-15
US3738097A (en) * 1971-07-12 1973-06-12 Omega Brandt & Freres Sa Louis Mechanism for driving and correcting a data disc in a day-date timepiece
CH574125B5 (zh) * 1972-04-05 1976-03-31 Suisse Horlogerie
US4050233A (en) * 1975-09-27 1977-09-27 Pforzheimer Uhren-Rohwerke Rudolf Wehner Stepping mechanism for watches
CH610482B (fr) * 1976-06-16 Schild Sa A Mouvement de montre-calendrier.
JPS5474465A (en) * 1977-11-26 1979-06-14 Citizen Watch Co Ltd Month correcting mechanism for calendar watch
CH678908B5 (zh) * 1990-04-04 1992-05-29 Rolex Montres
CH682285B5 (fr) * 1991-12-20 1994-02-28 Ebauchesfabrik Eta Ag Pièce d'horlogerie du type mécanique ou électromécanique comportant une roue d'entraînement pilotant au moins un dispositif d'affichage, tel qu'un affichage des quantièmes.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2124471A1 (zh) * 1971-02-05 1972-09-22 Suisse Horlogerie
US4198808A (en) * 1977-06-03 1980-04-22 Citizen Watch Co., Ltd. Calendar timepiece
JPS60173491A (ja) * 1985-01-21 1985-09-06 Citizen Watch Co Ltd 月末無修正機構付電子時計
GB2205181A (en) * 1987-05-25 1988-11-30 Rolex Montres Day or date setting mechanism for a watch

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3193217A1 (fr) * 2016-01-18 2017-07-19 ETA SA Manufacture Horlogère Suisse Mouvement horloger comprenant un affichage analogique
EP3196710A1 (fr) * 2016-01-18 2017-07-26 ETA SA Manufacture Horlogère Suisse Mouvement horloger comprenant un affichage analogique
US10054907B2 (en) 2016-01-18 2018-08-21 Eta Sa Manufacture Horlogere Suisse Timepiece movement including an analogue display

Also Published As

Publication number Publication date
EP2919077A2 (fr) 2015-09-16
JP5947937B2 (ja) 2016-07-06
JP2015169660A (ja) 2015-09-28
CN104914703B (zh) 2017-06-09
HK1215077A1 (zh) 2016-08-12
EP2919077B1 (fr) 2019-08-07
CN104914703A (zh) 2015-09-16
EP2919077A3 (fr) 2016-05-25
US9411311B2 (en) 2016-08-09
US20150253732A1 (en) 2015-09-10

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