EP2115537B1 - Zeitmessgerät mit einem mechanismus zum betrieb einer vorrichtung zur anzeige eines zeitbezogenen wertes - Google Patents

Zeitmessgerät mit einem mechanismus zum betrieb einer vorrichtung zur anzeige eines zeitbezogenen wertes Download PDF

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Publication number
EP2115537B1
EP2115537B1 EP08708291A EP08708291A EP2115537B1 EP 2115537 B1 EP2115537 B1 EP 2115537B1 EP 08708291 A EP08708291 A EP 08708291A EP 08708291 A EP08708291 A EP 08708291A EP 2115537 B1 EP2115537 B1 EP 2115537B1
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EP
European Patent Office
Prior art keywords
finger
spring
display device
wheel
timepiece
Prior art date
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Application number
EP08708291A
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English (en)
French (fr)
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EP2115537A2 (de
Inventor
Olivier Mahler
Alphonse Bron
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.)
Compagnie des Montres Longines Francillon SA
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Compagnie des Montres Longines Francillon SA
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Priority to EP08708291A priority Critical patent/EP2115537B1/de
Publication of EP2115537A2 publication Critical patent/EP2115537A2/de
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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
    • 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
    • G04B27/00—Mechanical devices for setting the time indicating means
    • 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
    • G04B19/25—Devices for setting the date indicators manually

Definitions

  • the present invention relates to a mechanism for adjusting a device of a time magnitude. More specifically, the present invention relates to an adjustment mechanism for ensuring that a display device of a time value such as a date display device will increment as close as possible to the midnight neighborhood. .
  • Timepieces which, in addition to the current time, are capable of providing at least two time-related indications such as the date and the day are already known in the state of the art.
  • An example of such a type of timepiece is shown in connection with the figures 1 and 2 appended to the present patent application and which respectively correspond to a plan view of the dial of the timepiece and a plan view of the display mechanism of the temporal quantities.
  • the timepiece comprises in its center a spindle switch formed by an hour hand 5a, a minute hand 5b and a second hand 5c which move over a circular dial 7.
  • the spindle mechanism has already been described in the European patent application EP 1544691 on behalf of the applicant and will not be described further here.
  • the timepiece whose mechanism for displaying temporal quantities is represented in plan at the figure 2 is a spindle watch comprising a 24-hour retrograde display corresponding to the local time of the place where the wearer of the watch usually resides and a 12-hour display corresponding to the time of the spindle of the place where the wearer of the watch is temporarily staying.
  • the display of the watch is completed by a small seconds indication 15.
  • the mechanism for displaying temporal quantities comprises in particular at its center a reference 1 which is integral with a wheel hours 1 a.
  • the reference 1 rotates in a clockwise direction and performs a complete revolution in twelve hours.
  • This reference 1 meshes with a date drive wheel 2 which rotates counterclockwise at the rate of one turn in twenty-four hours.
  • This driving wheel of date 2 carries a finger 4 by which it drives at a rate of one step per day a date wheel 6 which is indexed by a jumper 8 and which carries a cam 10.
  • the cam 10 has an abrupt flank 12 which marks the passage between the date of the last day of a given month and the date of the first day of the following month, in other words between the date "31" and the date "1".
  • the mechanism for displaying temporal quantities is completed by a control lever 14 provided at one of its ends with an arm 16 by which it bears against the cam 10 during normal operation, and comprising at its other end a rake 18 by which it meshes with a date display wheel 20 which carries the date indicator 9a (not visible on the figure 2 ).
  • the control rocker 14 is pivoted at 22 while a second rocker said return rocker 24 is rotated at 26.
  • This rocker 24 has a structure similar to that of the control lever 14 including including a rake 28 by which it meshes with the date display wheel 20.
  • the return lever 24 is constrained by a spring element 30 which tends to rotate it clockwise. In turn, the return lever 24 thus tends to turn the control lever 14 clockwise and to hold its arm 16 against the profile of the cam 10.
  • the spring element 30 comes from material with the return lever 24 and bears against a stop 32 for its pre-arming. To achieve this result, one can achieve this latch for example by a photoengraving technique LIGA. However, it goes without saying that the spring element 30 could be made in the form of a separate part of the return lever 24.
  • the time display mechanism shown in FIG. figure 2 comprises a day display device which, for the most part, has the same structure as the date display device. More specifically, this day display mechanism comprises a driving wheel of days 2a which rotates counterclockwise by being driven by the return 1.
  • This drive wheel 2a days carries a finger 4a by which it drives at a rate of not by day a wheel of days 6a which has fourteen teeth and thus performs a full turn in fourteen days.
  • the day wheel 6a carries a cam 10a which has a double cam profile with two steep sides 12a 1 and 12a 2 which are symmetrical with respect to the geometric center of said cam 10a.
  • Each of the two steep sides 12a 1 and 12a 2 of the cam 10a marks the passage of the indicator of the days of the last day of a week to the first day of the following week, namely from Sunday to Monday. It will be noted that the wheel of the days 6a is indexed by a jumper 8a.
  • the day display device is completed by a control lever 14a which by its arm 16a bears against the profile of the cam 10a and which meshes with its rake 18a with a display wheel 20a days.
  • a biasing latch 24a constrained by a spring 30a and which, at one of its ends, comprises a rake 28a by which it meshes with the display wheel 20a days.
  • the watch also includes a 24 hour local time display. Therefore, when correcting the position of the hour and minute hands, you must also be able to correct the 24 hour indication.
  • the 24-hour display device comprises a gear 34 driven by the movement of the watch and which meshes with a 24 hour wheel 6b which carries a cam 10b. In one place of its profile, this cam 10b has an abrupt flank 12b which marks the passage between the twenty-fourth hour of a day and the first hour of the following day.
  • a control lever 14b is not resting its arm 16b against the profile of the cam 10b and meshes with a display wheel 24 hours 20b via its rake 18b.
  • a return latch 24b constrained by a spring member 30b meshes with its rake 28b with the display wheel 24 hours 20b.
  • a watch provided with a single device for indicating a temporal magnitude such as a watch which only has a switch for displaying the current time and a date indicator hand does not pose any particular problem. Indeed, the precision of the jump from the date indication of a date to the next day around midnight is ensured by the precision with which the date indicator needle is driven on its axis.
  • the object of the present invention is to overcome this problem by providing a mechanism for precisely adjusting the instant of the jump of a display device of a time value in a timepiece.
  • the present invention relates to a timepiece according to claim 1 attached to this patent.
  • a timepiece in which the jumps of information provided by the first and second display devices can be synchronized very precisely to occur almost simultaneously.
  • the first display device of a quantity related to the time is synchronized with the display of the current time so that the displayed quantity is incremented by one. not at the passage of a certain time, typically midnight.
  • the second display device one can adjust the position of the finger relative to the position of the driving wheel which is determined by the position of the kinematic chain which connects the driving wheel movement by moving the finger relative to the board of the driving wheel, which is made possible by their friction coupling. In doing so, the position of the finger is also modified relative to the display device that it drives, which makes it possible to precisely adjust the moment when the displayed quantity will increment.
  • the finger is secured to a spring by a first pin around which it can pivot, the pivoting angle of said finger being limited by a second pin which it is integral and which is engaged in a light made in the board of the driving wheel, the spring holding the finger in a position in which it is engaged with the teeth of a driven wheel of the display device for driving the wheel clockwise or counterclockwise, the spring being mounted frictionally on the drive wheel to be able to catch any play, an opening being made for this purpose in the board of the drive wheel to be able to engage a tool for moving said spring relative to the board of the drive wheel.
  • a first display device may be a date display device
  • a second display device may be a day display device
  • a third display device may be a display device. 24-hour display, the timepiece comprising any combination of at least two of these display devices.
  • the display devices each comprise a pointer indicator.
  • a timepiece capable of displaying at least two temporal quantities in addition to the current time, the display of these temporal quantities being linked to that of the current time and to be modified simultaneously at the same time. passage of a specific time, typically midnight.
  • the display devices of a time scale may be a date display device, a day display device, a 24-hour display device or the like.
  • the accuracy with which the time value, for example the date, displayed by the first display device is incremented by one step at midnight is only a function of the precision with which the date indicator hand is driven on its axis.
  • the instant when the time value, for example the day, displayed by the second display device is incremented by one step at midnight is determined by the position of the driving wheel of the display device of the day.
  • the drive mechanism described herein comprises a driving wheel which is driven by the work train of the timepiece and which itself drives a display device of a time magnitude via a finger mounted to friction on the driving wheel. Due to the fact that the finger is frictionally mounted on the driving wheel, its position relative to the latter can be modified, and therefore the moment when this finger will actuate the display device of the time size can be adjusted. It is therefore possible, by precise driving of the indicator pointer of the first display device and adjustment of the relative position of the driving wheel and the finger driving the second display device, to ensure that the indications provided by the two display devices will be incremented at the desired time simultaneously or almost simultaneously.
  • this mechanism comprises a date driving wheel 2 which is driven by the hour wheel 1a of the movement of the timepiece via the reference 1 and which in turn drives via the finger 4 the date wheel 6 of the date display device.
  • the finger 4 is carried by the driving wheel 2.
  • the finger 4 has an oblong opening 38 through which it is engaged on a hub 40 of said driving wheel 2.
  • a spring 42 holds the finger 4 in a position in which this finger 4 is engaged with the toothing of the date wheel 6 to drive it in the clockwise or counterclockwise direction.
  • the spring 42 is disposed between the board 5 of the driving wheel 2 and the finger 4.
  • the spring 42 has a circular opening 44 having two diametrically opposite lugs 46a and 46b by which it is engaged to friction on the hub 40 of said driving wheel 2. Note that in normal operating mode, the spring 42 is stationary relative to the driving wheel 2.
  • the friction fitting of said spring 42 on said driving wheel 2, enabled by the presence of two ears 46a and 46b, is provided to allow fine adjustment of the drive mechanism 36 according to the invention as described below.
  • the finger 4 is coupled with the spring 42 by means of a pin 48.
  • This pin 48 is driven into the finger 4 but is free to pivot in an opening in the spring 42 in which it is engaged.
  • This pin 48 is the pivot point of the finger 4.
  • a second pin 50 also driven into the finger 4 and which is engaged in an oblong opening 52 formed in the driving wheel 2 in which the pin 50 is free to move .
  • the pin 50 is positioned in a recess 54 provided towards the free end 56a of a substantially circular elastic arm 56 of the spring 4.
  • the finger 4 must be rigid. By this is meant that the finger 4 must be able to drive the date wheel 6 clockwise as counterclockwise without arming itself in the manner of an instantaneous or semi-instantaneous spring mechanism.
  • the normal operating conditions are the periods in which the return 1 drives the driving wheel 2 either because 1 is driven by the movement of the timepiece clockwise, either because this reference 1 is driven clockwise or counterclockwise by actuating a winding stem for a time setting for example. In other words, in normal operating mode, the reference 1 rotates and drives the driving wheel 2 which itself drives the date wheel 6.
  • the spring 42 is mounted almost permanently on the hub 40 of the driving wheel 2 so that only a tool 58 engaged in an opening 60 formed in said driving wheel 2 at a notch 62 of the spring 42, allows to slightly move said spring 42 relative to said hub 40 by a few degrees in the clockwise or counterclockwise to catch any games and synchronize the date jump with the day jump.
  • the mechanism is then advanced until the rake of the display device, which, if any, is not equipped with the device according to the invention, is ready to fall along the steep side of the cam, then we adjust the position of the finger of the other display device so that the corresponding rake is also ready to fall along the steep profile of the cam against which it is supported.
  • both display devices of a temporal size are both equipped with a finger mounted friction, just observe which of the two rakes falls first and then adjust the position of the finger of the other display device so that the corresponding rake falls at the same time or almost as the other rake. Finally, it is sufficient to drive the indicator hands on their respective axes.
  • the finger 64 is mounted directly to friction on the hub 40 of the driving wheel 2 via an opening 66. It is thus possible to dispense with the spring 42, which substantially simplifies the construction of the mechanism and therefore allows to save money in terms of cost.
  • the finger 64 must, however, be slightly modified in order to have a recess 68 in which the tool 58 can be engaged in order to allow the fitter to slightly rotate the finger 64 by a few degrees in the clockwise or counterclockwise direction and thus to ensure a almost perfect synchronism of jumps of indicators of a temporal magnitude.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Electric Clocks (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Measurement Of Unknown Time Intervals (AREA)

Claims (6)

  1. Zeitmessgerät, das die laufende Zeit anzeigt und wenigstens eine erste und eine zweite Vorrichtung zur Anzeige einer an den Zeitablauf gebundenen Grösse umfasst, wobei diese erste und diese zweite Anzeigevorrichtung jeweils derart vorgesehen ist, dass sie von einem Antriebsmechanismus angetrieben wird, den das Zeitmessgerät umfasst und der ein Antriebsrad (2; 2a) aufweist, das selbst vom Uhrwerk des Zeitmessgeräts (3) angetrieben wird, wobei wenigstens das Antriebsrad (2; 2a) eines der Antriebsmechanismen einen Finger (4; 4a) trägt, mittels dessen es die entsprechende Anzeigevorrichtung antreibt, wobei dieser Finger (4; 4a) reibschlüssig auf dem Antriebsrad (2; 2a) montiert ist, welches Zeitmessgerät dadurch gekennzeichnet ist, dass der Finger (4; 4a) über eine zwischen dem Antriebsrad (2; 2a) und dem Finger (4; 4a) angeordnete Feder (42) reibschlüssig auf dem Antriebsrad (2; 2a) montiert ist, wobei die Feder (42) zu diesem Zweck eine mit zwei diametral entgegengesetzten Ohren (46a, 46b) ausgerüstete kreisförmige Öffnung (44) aufweist, durch die sie reibschlüssig auf einer Nabe (40) des Antriebsrads (2; 2a) angebracht ist.
  2. Zeitmessgerät nach Anspruch 1, dadurch gekennzeichnet, dass der Finger (4; 4a) mittels eines Stifts (48), um den er schwenken kann, fest mit der Feder (42) verbunden wird, wobei die Feder (42) den Finger (4; 4a) in einer Position hält, in der dieser Letztere mit der Zahnung eines geführten Rads (6; 6a) der Anzeigevorrichtung in Eingriff steht, um dieses Rad (6; 6a) im Uhrzeiger- oder Gegenuhrzeigersinn anzutreiben, wobei die Feder (42) reibschlüssig auf dem Antriebsrad (2; 2a) montiert ist, um eventuelle Spiele zu beseitigen, wobei zu diesem Zweck eine Öffnung (60) im Antriebsrad (2; 2a) ausgeführt ist, um ein Werkzeug (58) einfügen zu können, das ermöglicht, die Feder (42) im Verhältnis zum Antriebsrad (2; 2a) zu verlagern.
  3. Zeitmessgerät nach Anspruch 2, dadurch gekennzeichnet, dass die Feder (42) einen bogenförmigen Ausschnitt (62) aufweist, in den das Werkzeug (58) eingefügt werden kann.
  4. Zeitmessgerät nach einem der Ansprüche 2 oder 3, dadurch gekennzeichnet, dass der Schwenkwinkel des Fingers (4; 4a) durch einen zweiten Stift (50), mit dem er fest verbunden ist und der in ein in der Platte (5) des Antriebsrads (2; 2a) ausgebildetes Langloch (52) eindringt, begrenzt ist.
  5. Zeitmessgerät nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass es irgendeine der Kombinationen von wenigstens zwei der folgenden Anzeigevorrichtungen umfasst: eine Datumsanzeigevorrichtung, eine Tagesanzeigevorrichtung und eine 24 Stunden-Anzeigevorrichtung.
  6. Zeitmessgerät nach Anspruch 5, dadurch gekennzeichnet, dass die Anzeigevorrichtungen jeweils ein Zeigeranzeigeorgan (9a; 11a; 13a) umfassen.
EP08708291A 2007-01-30 2008-01-28 Zeitmessgerät mit einem mechanismus zum betrieb einer vorrichtung zur anzeige eines zeitbezogenen wertes Active EP2115537B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08708291A EP2115537B1 (de) 2007-01-30 2008-01-28 Zeitmessgerät mit einem mechanismus zum betrieb einer vorrichtung zur anzeige eines zeitbezogenen wertes

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP07001959A EP1953611B1 (de) 2007-01-30 2007-01-30 Uhr, die einen Antriebsmechanismus einer Vorrichtung zur Anzeige einer mit der Zeit zusammenhängenden Größe umfasst
EP08708291A EP2115537B1 (de) 2007-01-30 2008-01-28 Zeitmessgerät mit einem mechanismus zum betrieb einer vorrichtung zur anzeige eines zeitbezogenen wertes
PCT/EP2008/050973 WO2008095813A2 (fr) 2007-01-30 2008-01-28 Pièce d'horlogerie affichant l'heure courante et comprenant au moins un premier et un deuxième dispositifs d'affichage d'une grandeur liée au temps

Publications (2)

Publication Number Publication Date
EP2115537A2 EP2115537A2 (de) 2009-11-11
EP2115537B1 true EP2115537B1 (de) 2012-06-20

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EP07001959A Active EP1953611B1 (de) 2007-01-30 2007-01-30 Uhr, die einen Antriebsmechanismus einer Vorrichtung zur Anzeige einer mit der Zeit zusammenhängenden Größe umfasst
EP08708291A Active EP2115537B1 (de) 2007-01-30 2008-01-28 Zeitmessgerät mit einem mechanismus zum betrieb einer vorrichtung zur anzeige eines zeitbezogenen wertes

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EP07001959A Active EP1953611B1 (de) 2007-01-30 2007-01-30 Uhr, die einen Antriebsmechanismus einer Vorrichtung zur Anzeige einer mit der Zeit zusammenhängenden Größe umfasst

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Country Link
US (3) US7645068B2 (de)
EP (2) EP1953611B1 (de)
JP (2) JP5254995B2 (de)
KR (1) KR101418625B1 (de)
CN (2) CN101611356B (de)
AT (1) ATE460690T1 (de)
DE (1) DE602007005214D1 (de)
HK (2) HK1123103A1 (de)
WO (1) WO2008095813A2 (de)

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US20080181060A1 (en) 2008-07-31
HK1140270A1 (en) 2010-10-08
JP2008185590A (ja) 2008-08-14
US7645068B2 (en) 2010-01-12
EP1953611B1 (de) 2010-03-10
US9778621B2 (en) 2017-10-03
KR20090122200A (ko) 2009-11-26
EP2115537A2 (de) 2009-11-11
CN101236402B (zh) 2011-09-21
WO2008095813A3 (fr) 2008-12-04
CN101611356A (zh) 2009-12-23
US20100027381A1 (en) 2010-02-04
JP5139821B2 (ja) 2013-02-06
JP5254995B2 (ja) 2013-08-07
EP1953611A1 (de) 2008-08-06
US20150138936A1 (en) 2015-05-21
KR101418625B1 (ko) 2014-07-14
CN101611356B (zh) 2011-07-13
WO2008095813A2 (fr) 2008-08-14
US8937850B2 (en) 2015-01-20
CN101236402A (zh) 2008-08-06
HK1123103A1 (en) 2009-06-05
ATE460690T1 (de) 2010-03-15
JP2010526279A (ja) 2010-07-29
DE602007005214D1 (de) 2010-04-22

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