EP2751623A1 - Antriebsmechanismus eines anzeigers - Google Patents

Antriebsmechanismus eines anzeigers

Info

Publication number
EP2751623A1
EP2751623A1 EP12735626.9A EP12735626A EP2751623A1 EP 2751623 A1 EP2751623 A1 EP 2751623A1 EP 12735626 A EP12735626 A EP 12735626A EP 2751623 A1 EP2751623 A1 EP 2751623A1
Authority
EP
European Patent Office
Prior art keywords
rocker
mobile
calendar
cam
pivot
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.)
Granted
Application number
EP12735626.9A
Other languages
English (en)
French (fr)
Other versions
EP2751623B1 (de
Inventor
Jacques Gabathuler
Trung Thanh Nguyen
Serge Nicollin
Florent Zufferey
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.)
Breitling AG
Original Assignee
Breitling AG
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 Breitling AG filed Critical Breitling AG
Priority to EP12735626.9A priority Critical patent/EP2751623B1/de
Publication of EP2751623A1 publication Critical patent/EP2751623A1/de
Application granted granted Critical
Publication of EP2751623B1 publication Critical patent/EP2751623B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • G04B19/00—Indicating the time by visual means
    • G04B19/02—Back-gearing arrangements between gear train and hands
    • 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
    • G04B19/00—Indicating the time by visual means
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped
    • G04B19/253—Driving or releasing mechanisms
    • G04B19/25333—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement
    • 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
    • G04B19/00—Indicating the time by visual means
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped
    • G04B19/253—Driving or releasing mechanisms
    • G04B19/25333—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement
    • G04B19/25373—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by an energy source which is released at determined moments by the clockwork movement
    • 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
    • G04B27/00—Mechanical devices for setting the time indicating means
    • G04B27/02—Mechanical devices for setting the time indicating means by making use of the winding means
    • G04B27/026—Mechanical devices for setting the time indicating means by making use of the winding means for several clockworks or pairs of hands and/or supplementary functions

Definitions

  • the present invention relates to a mechanism for driving an indicator for a timepiece.
  • the indicator is for example a date, day of the week or month indicator in a calendar display, and may be in the form of a needle or a disc.
  • the present invention relates to a drive mechanism of an indicator in which a drive mobile of the indicator, such as a star secured to the indicator, is actuated by a spout of a rocker controlled by a cam.
  • a drive mobile of the indicator such as a star secured to the indicator
  • a cam controlled by a cam. Examples of such a mechanism are described in patent CH 702.137 (for an instantaneous counter) and in patent EP 1.115.041 (for a rapid date corrector).
  • the rocker controlled by the cam performs a rotary reciprocating movement which makes its beak come in and out of the toothing of the drive wheel.
  • the nose touches a tooth of the latter, which forces either to make the beak retractable to prevent blockage, as in patent CH 702.137, or to accept that the release spout causes a momentary retreat of the drive wheel, as in EP 1 15.041, which is then retracted by the jumper positioning the drive wheel.
  • the driving wheel continues its displacement under the effect of its inertia by unclipping the retractable nose, thus distorting the display.
  • the momentary recoil of the mobile harms the aesthetics of the display.
  • Patent CH 54.709 also discloses a mechanism for actuating a toothed wheel, such as a chronograph counter wheel, comprising a first rocker controlled by a snail cam.
  • the first rocker carries a ratchet terminated by an actuating spout of the toothed wheel as well as pins.
  • the pins guide a first arm of a second rocker, to control the latter.
  • the pawl mouth protrudes from the toothing of the toothed wheel without touching the toothed wheel.
  • a second elastic arm of the second rocker press the pawl to rotate around its pivot carried by the first rocker and bring the beak in the toothing of the toothed wheel.
  • the spout moves the gear wheel by one step.
  • the beak of the pawl cyclically describes a closed curve whose shape allows the spout out of the toothing of the toothed wheel without touching it.
  • the present invention aims to overcome the aforementioned drawbacks and proposes for this purpose an indicator driving mechanism for a timepiece, comprising:
  • a first rocker mounted around a first pivot and comprising a nose intended to cooperate with a toothing of the mobile to move the mobile
  • a first cam arranged to rotate the first rocker around the first pivot
  • a second rocker mounted around a second pivot and which is secured to the first pivot, a second cam arranged to rotate the second latch around the second pivot, and
  • the rockers and the cams being arranged so that the nose of the first rocker cyclically describes a closed curve, each cycle comprising a first movement during which the nose leaves the toothing of the mobile without modifying the angular position of said mobile and a second movement during which the nose enters the teeth of the mobile to move said mobile.
  • the use of the two cams and the second rocker thus allows the first latch to exit the toothing of the mobile without touching it and to enter said toothing by moving the mobile.
  • the beak does not need to be retractable; it can be rigidly linked with the rest of the first rocker, which in particular will prevent the mobile to continue its movement under the effect of its inertia just after its actuation by the first rocker in the case where the movement of the mobile is instantaneous jumps .
  • the elastic means can indeed maintain the nose in the toothing of the mobile with sufficient force to lock the mobile after its actuation, unlike the elastic means retractable nozzles of the state of the art must be sufficiently low to allow the retraction of the spout when it leaves the teeth of the mobile.
  • the resilient means maintain the nose in the teeth of the mobile during the actuation of the latter, thus avoiding the risk of accidental disengagement of the spout of the toothing of the mobile.
  • the first and second cams are coaxial.
  • the mechanism according to the invention may further comprise a third rocker mounted around a third pivot and arranged so that the first flip-flop is driven by the first cam via this third flip-flop.
  • a device may be provided to automatically remove the spout of the toothing of the mobile before a correction of the position of said mobile.
  • This device is operable for example by a movement of a winding stem in a predetermined axial position.
  • This device may comprise means for moving the second flip-flop of the second cam apart, this distance causing a displacement of the first flip-flop causing the spout to come out of the toothing of the mobile,
  • the present invention also relates to a calendar mechanism comprising a mechanism as defined above.
  • the present invention finally relates to a timepiece comprising a mechanism as defined above.
  • Figure 1 shows a calendar mechanism according to a first embodiment of the invention; in this figure three scales are drawn with lines of different thicknesses and two cams are drawn with lines of different thicknesses to allow the reader to better distinguish them;
  • FIG. 2 shows a sequence of states of the calendar mechanism according to the first embodiment during a rotation of the time indicators of the timepiece by a number of turns corresponding to 24 hours of clockwise display in the direction hourly;
  • FIG. 3 shows a sequence of states of the calendar mechanism according to the first embodiment during a rotation of the time indicators of the timepiece by a number of turns corresponding to 24 hours of clockwise display in the direction anti-clockwise;
  • Figure 4 shows a calendar mechanism according to a second embodiment of the invention;
  • FIG. 5 shows a sequence of states of the calendar mechanism according to the second embodiment during a rotation of the timepieces of the timepiece by a number of turns corresponding to 24 hours of time display in the clockwise
  • FIG. 6 shows a sequence of states of the calendar mechanism according to the second embodiment during a rotation of the time indicators of the timepiece by a number of turns corresponding to 24 hours of time display in counter clockwise;
  • Figure 7 shows a part of a correction device included in the calendar mechanism according to the invention.
  • Figure 8 shows another part of the correction device
  • Figure 9 shows a display portion of the months of the calendar mechanism according to the invention.
  • the term "calendar” includes the indication of the date and / or day of the week and / or month.
  • a calendar mechanism for a timepiece such as a wristwatch, comprises a calendar wheel 1 driven, in a conventional manner, by the finishing gear of the timepiece during normal operation thereof.
  • the calendar wheel 1 thus rotates at a rate of one turn per 24 hours in the direction indicated by the arrow S1.
  • the calendar wheel 1 is driven by the time setting wheel in one direction or the other.
  • Two cams namely a calendar cam 2 and an isolation cam 3, are coaxial with the calendar wheel 1.
  • An eccentric pin 4 driven into the calendar cam 2 is engaged in an arcuate opening 5 of the calendar wheel 1 comprising a first end 6 and a second end 7.
  • the pin 4 and the opening 5 define a range of rotation of the calendar cam 2 with respect to the calendar wheel 1.
  • the isolation cam 3 is it, integral with the calendar wheel 1.
  • Each of the cams 2, 3 comprises an armoring part 2a, 3a, of increasing radius, between a lower part 2b, 3b and a top 2c, 3c and a falling part 2d , 3d, shorter, between the vertex 2c, 3c and the lower part 2b, 3b.
  • the lower part 2b of the calendar cam 2 defines a hollow and its falling part 2d is convex and of positive slope.
  • the falling portion 3d of the isolation cam 3 is substantially straight and of positive slope.
  • a cam rocker 8 mounted around a pivot 9 is applied a portion of the time against the calendar cam 2 by a spring 10.
  • An isolation rocker 11 mounted around a pivot 12 is applied against the isolation cam 3 by a spring 13.
  • the pivots 9, 12 are mounted on a fixed part of the movement of the timepiece, such as the plate or a bridge.
  • the contact between the rockers 8, 11 and the cams 2, 3 is preferably carried out by means of rollers 14, 15 respectively mounted on the rockers 8, 11 and which roll on the cams 2, 3.
  • beaks of the latches 8, 11 could cooperate directly with the cams 2, 3.
  • a calendar rocker or "rocker actuation" 16 is mounted around a pivot 17 carried by the isolating rocker 11 and has an oblong opening in U 18 which receives a pin 19 carried by the cam rocker 8.
  • the calendar rocker 16 is controlled by both the cam rocker 8, therefore by the calendar cam 2, and by the isolation rocker 11, therefore by the isolation cam 3.
  • the calendar rocker 16 comprises spouts 20, 21 which cooperate respectively with a date star 22 and a star of days 23.
  • Indicators such as needles or disks are integral with the stars 22, 23 respectively and indicate to the user the day of the month and the day of the week in cooperation with graduations or wickets of a dial of the timepiece.
  • FIGS. 2 (a) to 2 (g) show different successive configurations of the calendar mechanism according to this first embodiment of the invention during normal operation of the timepiece or during a time-ahead , that is to say in the clockwise direction of the timepieces of the timepiece, where the calendar wheel 1 and with it the isolation cam 3 rotate in the direction S1.
  • FIG. 2 (a) like FIG.
  • FIGS. 3 (a) to 3 (h) show different successive configurations of the calendar mechanism according to this first embodiment of the invention during a time setting backwards, that is to say in the anti direction -clock indicators of the time display, where the calendar wheel 1 and with it the isolation cam 3 rotate in a direction S2 opposite the direction S1.
  • FIG. 3 (a) like FIG.
  • the calendar rocker 16 bears against the stop pin 24, the nozzles 20, 21 of the calendar rocker 16 are in the toothing of the stars 22, 23 respectively, the cam rocker 8 is out of contact with the calendar cam 2 because held against the action of the spring 10 by the calendar rocker 16 which cooperates with the pin 19, the rocker d insulation 11 is applied against the lower part 3b of the isolation cam 3 and the pin 4 is moved away from the ends of the oblong opening 5, in particular the second end 7.
  • the isolation rocker 1 is raised from the lower part 3b at the top 3c of the isolation cam 3 by the falling part 3d (FIG.
  • the calendar rocker 16 performs a forward movement which causes its beaks to protrude. , 21 of the teeth of the stars 22, 23 without touching any tooth of these teeth and therefore without changing the angular position of said stars, then a return movement which returns its beaks 20, 21 in the teeth of the stars 22, 23 by advancing a step said stars.
  • the calendar rocker 16 makes a forward movement which makes its nozzles 20, 21 come out of the teeth of the stars 22, 23 without touching any tooth of these teeth and therefore without modifying the angular position of said stars, then a return movement which returns its beaks 20, 21 in the teeth of the stars 22, 23 without changing the angular position of the latter and therefore without doing change appear in the calendar view.
  • the user can set the time back at any time, without the passage by midnight in opposite direction advance the indicators of the calendar display.
  • the two cams 2, 3 have relative angular positions which differ according to the direction of rotation of the calendar wheel 1 (see Figure 3 (c) compared in Figure 2 (c)) and therefore the movement of the calendar rocker 16 differs in the direction of rotation of the calendar wheel 1.
  • An important feature of the present invention is that given the trajectory followed by the nozzles 20, 21 of the calendar lever 16 these do not need to be pivotable, they can be rigid as shown.
  • the advantage of having rigid beaks is that they prevent stars 22, 23 to advance more than one step under the effect of their inertia at the time of date changes.
  • FIG. 4 shows a calendar mechanism according to a second embodiment of the invention.
  • the timing mechanism according to this second embodiment differs from that according to the first embodiment in that the cam latch 8 is suppressed and in that the calendar latch, designated by the mark 16 ', cooperates with the cam of 2 'calendar instead of the cam rocker 8, has for this purpose a roller 14' or a spout and is directly subject M
  • the mechanism according to the invention comprises a correction device illustrated in FIGS. 7 and 8.
  • the correction device comprises, as shown in FIG. 7, the winding stem 27 of the timepiece which can take three axial positions, namely a winding position (pushed position), a date correction position (position intermediate) and a time setting position (pulled position).
  • a pull tab 28 cooperates with the winding stem 27 to control the sliding pinion (not shown) in a conventional manner.
  • the pull tab 28 also controls a lever 29 by means of a pin 30 integral with the pull tab 28 and engaged in an elongated angled opening 31 of the lever 29.
  • the lever 29 pivots at a point 32.
  • a connecting rod 33 is articulated by one of its ends to the lever 29 and by its other end to a first end 34 of a second lever 35.
  • the lever 35 pivots about the common axis of rotation of the calendar wheel 1 and the cams 2, 3 and presents a second end 36 located on the other side of said axis relative to the first end 34.
  • the levers 29, 35 and the connecting rod 33 are in their position shown in solid lines in Figure 7, where the lever 35 does not act on the isolating rocker 11 which remains in abutment against the isolation cam 3.
  • the pin 30 cooperates with a portion 37 of the opening 31 extending from the elbow to a first end of the opening. Between the date correction position and the time setting position, the pin 30 cooperates with the other portion 38 of the opening 31, from the bend to the second end of the opening.
  • a corrector of the days 39 in the form of a lever actuated by a push button (not shown) and pivoting at a point 40, comprises a spout 41 which moves the star of the days 23 each time by one step that the corrector 39 is actuated.
  • the corrector 39 is subjected to the action of a return spring (not shown).
  • the corrector carries a pin 42 which raises the isolating lever 11 with each actuation of the corrector 39.
  • the lifting of the isolating rocker 11 moves the calendar rocker 16 away from the stars 22, 23, and in particular makes the spout 21 leave the toothing of the star of the days 23 before the spout 41 of the corrector 39 is formed. engages in said toothing.
  • the calendar mechanism according to the invention may also include an indicator of the months.
  • FIG. 9 shows an example of such an indicator, in the form of a disk 43 bearing the indications of the 12 months.
  • This indicator 43 is integral with a pinion of the months 44 which is driven by a wheel 45 itself driven by a retractable finger 46 carried by the date star 22.
  • the finger 46 is placed so that the pinion of the months 44 be dragged one step at the time of the passage from the 31st to the 1st . If a correction of the display of the months, by a mechanism not shown, is performed while the finger 46 is engaged in a toothing of the gear train 45, the finger 46 retracts to prevent any locking of the pinion of the months 44.
  • the mechanism allowing the correction of the display of the months is for example a gear connected to the winding stem by a rocker so that when the winding stem is in the axial position of correction of the date, a rotation of the rod in one direction determined corrects the angular position of the pinion of the months 44 while a rotation of the rod in the other direction corrects the angular position of the date star 22 through said rocker and the date correction wheel.
  • pivot is to be considered broadly, as covering not only the material axis on which a rocker data is mounted but also, more generally, the imaginary axis around which the rocker pivots.
  • mobile covers, him, any rotary member such as wheel, pinion, disk or star.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Transmission Devices (AREA)
EP12735626.9A 2011-08-30 2012-06-13 Antriebsmechanismus eines anzeigers Active EP2751623B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12735626.9A EP2751623B1 (de) 2011-08-30 2012-06-13 Antriebsmechanismus eines anzeigers

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP11007040.6A EP2565729B1 (de) 2011-08-30 2011-08-30 Kalendermechanismus
PCT/IB2012/001227 WO2013030636A1 (fr) 2011-08-30 2012-06-13 Mecanisme d ' entrainemant d'un indicateur
EP12735626.9A EP2751623B1 (de) 2011-08-30 2012-06-13 Antriebsmechanismus eines anzeigers

Publications (2)

Publication Number Publication Date
EP2751623A1 true EP2751623A1 (de) 2014-07-09
EP2751623B1 EP2751623B1 (de) 2019-05-01

Family

ID=46514711

Family Applications (2)

Application Number Title Priority Date Filing Date
EP11007040.6A Active EP2565729B1 (de) 2011-08-30 2011-08-30 Kalendermechanismus
EP12735626.9A Active EP2751623B1 (de) 2011-08-30 2012-06-13 Antriebsmechanismus eines anzeigers

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP11007040.6A Active EP2565729B1 (de) 2011-08-30 2011-08-30 Kalendermechanismus

Country Status (5)

Country Link
US (2) US9042206B2 (de)
EP (2) EP2565729B1 (de)
JP (2) JP6021919B2 (de)
CN (2) CN103765333B (de)
WO (1) WO2013030636A1 (de)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023072518A1 (fr) 2021-10-25 2023-05-04 Manufacture D'horlogerie Audemars Piguet Sa Piece d'horlogerie comprenant un mecanisme de quantieme et un mecanisme de correction de la date ou des mois

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US9042206B2 (en) 2015-05-26
US8644116B2 (en) 2014-02-04
WO2013030636A1 (fr) 2013-03-07
WO2013030636A8 (fr) 2014-01-30
JP6021919B2 (ja) 2016-11-09
CN103765333A (zh) 2014-04-30
JP2013050449A (ja) 2013-03-14
EP2751623B1 (de) 2019-05-01
US20140160897A1 (en) 2014-06-12
EP2565729B1 (de) 2018-01-31
CN102968042B (zh) 2016-07-06
JP6029893B2 (ja) 2016-11-24
EP2565729A1 (de) 2013-03-06
JP2014525579A (ja) 2014-09-29
CN103765333B (zh) 2016-09-28
CN102968042A (zh) 2013-03-13
US20130051183A1 (en) 2013-02-28

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