EP2498142A2 - Mécanisme de calandrier pour pièce d'horlogerie mécanique - Google Patents

Mécanisme de calandrier pour pièce d'horlogerie mécanique Download PDF

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Publication number
EP2498142A2
EP2498142A2 EP12405025A EP12405025A EP2498142A2 EP 2498142 A2 EP2498142 A2 EP 2498142A2 EP 12405025 A EP12405025 A EP 12405025A EP 12405025 A EP12405025 A EP 12405025A EP 2498142 A2 EP2498142 A2 EP 2498142A2
Authority
EP
European Patent Office
Prior art keywords
month
program
month wheel
control
wheel
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Withdrawn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
EP12405025A
Other languages
German (de)
English (en)
Inventor
Bonny Witteveen
Elmar Mock
Markus A Mueller
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.)
Crcaholic Sa
Original Assignee
Crcaholic 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 Crcaholic Sa filed Critical Crcaholic Sa
Publication of EP2498142A2 publication Critical patent/EP2498142A2/fr
Withdrawn legal-status Critical Current

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    • 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
    • G04B19/241—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars the date is indicated by one or more 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
    • 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
    • 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
    • G04B19/25353—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by the clockwork movement
    • G04B19/2536—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by the clockwork movement automatically corrected at the end of months having less than 31 days

Definitions

  • the invention relates to the field of watchmaking. It relates to a calendar circuit according to the preamble of patent claim 1.
  • Calendar circuits are known, for example CH 680 640 B5 and CH696861 A5 ,
  • the month wheel and the control perform continuous rotational movements.
  • the month wheel makes one revolution in one month and the control one revolution in one year or four years.
  • the control may have several parts whose configuration repeats every four years.
  • control is arranged on the month wheel and moved with the month wheel.
  • control system has a control cam which is fixedly arranged on the month wheel and which, when being indexed by the sensing element, respectively controls an indexing by one day.
  • control cam has a gap in which the control is scanned by the sensing element.
  • control is a round program disk which is rotatably mounted on the month wheel and at its periphery program elements, in particular cuts in the radial direction, which encode the indexing by one, two, three or four days.
  • This coding causes, for example, that the scanning element moves into the incisions during scanning and, according to the depth of an incision, a hook of the scanning element moves over one to four teeth of the month wheel.
  • the current sector is at the end of the month in the area of the gap of the control cam and is scanned by the sensing element.
  • the switching can be coded at the end of each month for a whole year (for the annual calendar) or for four years (for the perpetual calendar) by program elements or cuts in the size of the program disk. There is no incision for a month with 31 days, for months with 30, 28 and 29 days there are correspondingly deeper incisions, which cause a progression of 2, 3, and 4 days.
  • the program disk rotates once a year and has another control which, every four years when scanning the program disk cut corresponding to February 28, limits the scanning motion of the scanning element, thereby advancing the scanning element by only one day , For the following day (29th of February) there is another incision in this sector of the program disk, which triggers a three-day switch. This further incision will be skipped in normal years because it will trigger a 4-day advance on February 28th. Sectors for the remaining months have a cut only for the 30-day months.
  • the further control element can be arranged to rotate on the program disk and with the program disk, whereby its rotation with respect to the program disk is stifled, in particular by a factor of four.
  • the reduction can be continuous, by means of gears.
  • the further control element can be incrementally indexed by means of a four-armed star wheel, preferably at a season removed from February. Alternatively, it can be indexed with a four-armed Maltese cross gear.
  • the program elements are arranged in different levels of the program disk, and is determined by the current day of a month, which plane is scanned by the scanning element.
  • the current day corresponds to the rotational position of the month wheel with respect to the "fixed world", typically a clock board, and thus also with respect to the storage of the Abtastriches. This can be avoided that even with larger tolerances of parts an incision, for example, belongs to the 30th of a month, due to the relative rotation of the program disk with respect to the month wheel on the 28th or 29th of another month is met by the sensing element.
  • the three days (28th to 30th), in which the program disc is scanned can each be assigned to a separate level. In practice, however, it is sufficient to avoid overlaps if all program elements of the 28th and 29th - four in four years - are arranged in a first level and all program elements of the 30th - sixteen in four years - in a second level.
  • the program disc with its two planes can be arranged with the same diameter and coaxial with the control cam.
  • the control curve corresponds to a third level, parallel to the first two levels, for all days except the 28th to 30th day, where there is a gap.
  • This third level limits the movement of the sample element on these remaining days to the one-day handoff, only between the 28th to 30th the gap allows for a wider sweep.
  • the first level is always scanned on the 28th and 29th, with 11 of 12 months being incremented by one day only.
  • the second level is always scanned. The cuts for the 30-day months do not conflict with the scans for the 28th and 29th in other months because they are in a different level.
  • the program disc may have an internal toothing for driving, or a coaxial gear with a smaller diameter.
  • the mechanism can be easily equipped with an additional indexing element, which, for example, manually operated with a pusher.
  • the shift lever itself can be actuated with a pusher, in addition to the operability by the switching spring.
  • the shift lever can be actuated with an actuating element, which on the one hand lifts the hook radially and allows a stepwise or continuous turning of the month wheel in both directions.
  • an adjusting device may be provided which lifts the gear lever from the month wheel, the scanning picks up the control system and an actuator with the calendar mechanism, in particular the month wheel, engages, thereby enabling manual adjustment of the calendar mechanism.
  • FIG. 1 shows a calendar circuit.
  • a month wheel 1 with a toothing 17 with 31 peripheral teeth carries a first and second gear 2, 3 and a program disc 4, which acts as a control.
  • the first gear 2 rotates the month wheel 1 and rolls on a fixed gear, which is coaxial with the axis of the month wheel 1, from, and is reduced in the ratio 1/3.
  • the direction of rotation of the wheels is indicated by arrows.
  • the second gear 3 is driven by the first gear 2, reduced in the ratio 1 ⁇ 4, and performs one revolution per year.
  • the program disk 4 is driven by the second gear 3 and reduced in the ratio 1 ⁇ 4, so performs a revolution in four years.
  • the teeth of these translation gears is not shown here as well as in the other figures, the gears are shown only by circles.
  • the month wheel 1 has a circumferential cam 5, axially offset from the teeth (the cam can also be referred to as a rim or as a hoop).
  • Program disk 4 and control cam 5 together form a control system which is scanned by a scanning element once every 24 hours.
  • Month wheel 1 is incremented by one tooth every 24 hours and one, two, three or four teeth at the end of the month.
  • the handover is done by a preferably resilient shift lever 6, which drives by a lever 8 drives around this number of teeth and then recoils.
  • the number of teeth is determined by a sensing element in the form of a Abtastriches 7, which retracts against the control cam 5 or in cuts 13 of the program disk 4: Depending on the depth of the incision a corresponding number of teeth is bypassed.
  • the drive of the lever 8 is done via a spring lever 11, which in turn is driven by a worm wheel 12, which rotates once every 24 hours.
  • the sensing pin 7 scans the control cam 5 and therefore switches on by one day or one tooth of the month wheel 1 on. At the end of the month, however, it scans the program disk 4, which protrudes with its circumference into a gap 5 'of the control cam 5.
  • the program disk 4 rotates (with respect to the month wheel) only by 0.246 ° per day, which is why it is difficult to read different information from the disc from day to day. But by the program disk 4 is rotated with the month wheel 1, the angle difference from day to day at the end of the month is much larger and the cuts of the different days can be easily scanned separately from each other.
  • FIG. 2 shows the calendar circuit in a different position. For clarity, only the cuts 13 for February are shown in the program disk 4. The three deeper cuts correspond to a February 28 (4 day advancement), the less deep incision, which is active only every four years, February 29 (3 day advancement), and the uncut scope of the program disc 4 corresponds to a progression for one day, for a month with 31 days.
  • the in the FIG. 1 shown position thus corresponds to the 29th of February a leap year, after which at midnight, the indexing by 3 teeth happens.
  • the state after switching is in FIG. 2 shown, it corresponds to the announcement of March 1; the month wheel 1 indicates the first day of the month.
  • the sensing pin 7 abuts against the cam 5, so that the handover is again limited to a day.
  • FIG. 3 schematically shows the full program disk 4 of the calendar circuit.
  • the incision on February 29 is not exactly offset from one of the incisions on February 28, but offset by about 11.6 °, as it has to be activated one day later.
  • the radius of the program disk 4 can be varied according to the size of the gap in the control cam and to avoid that the control sections (with and without cuts) of individual days of adjacent months overlap each other.
  • FIG. 4 shows an exemplary display for calendar switching.
  • the month wheel 1, the second gear 3 and the program disk 4 are each assigned a pointer for displaying days (1-31), months (Jan-Dec) and Wegjahresindikation (1-4).
  • some or all of the displays may be realized by other means, such as dials behind a window, and / or with non-coaxial hands.
  • the transmission of the movement of the respective wheel 1, 3, 4 to the coaxial pointer takes place, for example, in each case by means of two wheels with the same diameter, one of which about the axis of the respective wheel with the wheel, and the other with the pointer to the common central
  • the axis of the display turns. Since the construction of the calendar circuit is simple and can be realized small, the display with the whole calendar circuit can be arranged eccentrically in a partial area of the bezel as shown.
  • FIG. 5a -c shows a variant of the calendar circuit.
  • the program disk 4 is also here on the month wheel 1 and with the month wheel rotating over a fourth gear 2 'over the month wheel 1 stocked by a factor of 12, so turns once a year about its axis.
  • Each month is assigned a sector of the scope of the program disk of 30 °.
  • the diameter of the program disk 4 is chosen so that such a sector on the circumference of the program disk 4 in about the Gap of the cam 5 corresponds.
  • the gap lies with the sampling points for the 28th, 29th and 30th day of each month. For months less than 31 days, then the sector of the program disk 4 which is in the gap encodes which day is advanced by how many days.
  • the operation is thus the same as in the embodiment of Figures 1-3 , with the difference that the angles of the sectors here are larger and the program disk encodes only the months of a single year.
  • this variant can be operated without further elements and thus realizes a calendar circuit which switches correctly in all months with the exception of leap years ("annual calendar").
  • another control 14 may be provided, which prevents every four years that the sensing pin 7 dips into the recess 13 of the 28th February.
  • This further control element 14 is here a protruding cam, which is rotatably arranged on the program disk 4 and rotates once every four years. During three years the incision 13 of the 28th of February is free, in one leap year it is blocked.
  • FIG. 5a shows the elements that work together on February 28th of a leap year: the cam prevents it from plunging into the 28th of February cut, it only switches on by one day, the next day the stylus 7 plunges into the (less deep) cut February 29, and continues for three days.
  • FIG. 5b shows a section with the programming disk 4 without the further control element 14.
  • FIG. 5c shows the further control element 14 with the protruding cam alone.
  • the further control element 14 has in this embodiment, a star wheel, which by another cam (not shown) on the month wheel 1 once a year is actuated when the program disk 4 performs its annual revolution with respect to the month wheel 1. This happens at a sufficient distance from the month of February.
  • a locking spring 19 holds the further control element 14, if it is not rotated by the further cam, in a defined position.
  • FIG. 6a -b shows another variant of the calendar circuit.
  • the cuts 13 of the program disk 4 and the operating principle regarding the handover in normal years and leap years are the same as in the embodiment of FIG. 5a c.
  • the further control element 14 is not rotated via a star wheel but continuously via gears respectively a toothing with a reduction of 1/4 with respect to the programming disk 4.
  • the further control element 14 has an external toothing which rolls on a fifth toothed wheel 20 about the axis of rotation of the programming disk 4, the fifth toothed wheel 20 being fixed with respect to the month wheel.
  • FIG. 6b shows the further control element 14, also with a protruding cam 18 by itself, wherein the protruding cam is located in a different plane than the gear.
  • the sensing pin 7 thus acts only in the plane of the cam 18 and the program disc 4 and the control cam 5, but not the gear of the further control 14th
  • FIGS. 5a and 6a the respective embodiment of the further control element 14 is shown drawn out for the sake of better illustration. It is, however, preferably arranged between month wheel 1 and program disk 4, so that the drive via the cam or the gearwheel on the month wheel can be realized.
  • the fourth gear 2 'below that can be arranged on the side opposite the program disc 4 side of the month wheel 1. There it rolls off at a further gear fixed with respect to the board.
  • FIG. 7 is also schematically indicated how various pointers 21 (or discs) for displaying day, month and leap year can be arranged coaxially.
  • FIG. 8 shows elements of a variant of the calendar circuit.
  • the teeth of the month wheel 1 not a larger radius so the control cam, but are arranged as a toothing 17 on a cylindrical portion of the month wheel 1 with a smaller radius. Accordingly, the lever 6 can be made smaller and only have to cover smaller paths when moving forward.
  • This variant of the toothing 17 can of course be combined with all variants of program discs (four-year disc, annual disc with and without further control).
  • FIG. 9 shows the function of a control device.
  • This is actuated by an actuating element, for example a pusher or a crown (not shown), whereby the lever 6 and the sensing pin 7 are lifted so that the teeth of the month wheel and the control cam respectively the program disk 4 are released with cuts 13 and adjusted can.
  • an actuator 15 is brought into engagement with gears with, for example, a toothing of the month wheel 1 and thus allows an adjustment of the month wheel and coupled thereto further elements, in particular the month disc, for example via the winding shaft of the clock.
  • gears may also be present only one control element, which switches the month wheel 1 by one day with each operation (forward or backward).
  • a detent spring 16 may be present, which engages resiliently in the toothing 17 (1 tooth per day) of the month wheel.
  • a blocking circuit which blocks the actuation of the actuating device during corresponding times of the day.
  • the blocking device to scan the worm wheel 12, or one with the Worm disc connected control disc (not shown) which also rotates once in 24 hours.
  • FIG. 10 shows a variant of a program disk 4 as a control element of the calendar circuit, together with a disc which forms the control cam 5.
  • the other elements such as reduction (to one revolution per four years), shifter, feeler pin, gearing, etc. are not shown, but work together in the same manner as already described, with the difference that the stylus on the day of the month by different Levels of program disk is controlled.
  • the program disc has a first plane 4a and a second plane 4b.
  • the program disc can be made in one piece or from two superimposed, preferably firmly connected discs with notches 13.
  • the program disk 4a, 4b axially along its axis of rotation displaced (indicated by double arrow).
  • the FIG. 10 shows the program disc 4a, 4b in a first position, with a distance 4d to the disc with the control cam 5. In a second position, the distance 4d is smaller or zero.
  • This shift can be done by means of a cam or link ("disc control curve", not shown), which is firmly connected to the program disc 4a, 4b, rotates with it and engages in a fixed cam, or vice versa with a cam on the program disc 4a, 4b and a fixed disc control curve.
  • control system is designed so that on all days of a month with the exception of the 28th, 29th and 30th day the control curve 5 limits the sampling, on the 28th and 29th the first plane is scanned by the scanning pin 7 , and on the 30th day the second level.
  • the program disk 4a, 4b is brought to the second position on the 30th day with the disk control cam and is on the 28th and 29th in the first position.
  • For the shift from the second to the first position is available the whole time from the 1st to the 28th, accordingly several individual indexing movements, since in this time the control cam is authoritative and the program disc is not scanned.
  • the shift from the first to the second position must occur between the 29th and the 30th day.
  • FIGS 11-12 show schematically a scan of this program disk to different data.
  • the scanning pin 7 has two scanning areas or scanning fingers, of which a first 7a always acts in the plane of the control cam, and a second 7b in the plane in which each one of the two levels of the program disc 4a, 4b - depending on their axial position - lies.
  • a first 7a always acts in the plane of the control cam
  • a second 7b in the plane in which each one of the two levels of the program disc 4a, 4b - depending on their axial position - lies.
  • the movement of the scanning pin 7 on the first finger 7a is limited by the cam 5 and thus advances only by one day. Only on the said three days does the first finger 7a strike the gap 5 'of the control cam and the second finger 7b becomes authoritative.
  • the second finger 7b strikes the first level 4a. There is no cut except in February and it will be switched on by one day. In February, the second finger 7b strikes one of the four first-level incisions on the 28th or 29th, and continues for four or three days according to the depth of the incision.
  • the program disk 4a, 4b in the second position, so that the second finger 7b scans the second level 4b.
  • the control curve 5 is again decisive. The in the FIGS.
  • 11 and 12 situation illustrated corresponds to the sample 29 ( Fig. 11 ) and on 30 June ( Fig. 12 ):
  • the program disk On June 29, the program disk is in the first position, the distance 4d is greater, and the second finger 7b scans the first plane 4a. If the planes were not separated, that is, all the incisions were on one plane, then it could be a problem that in the second plane 4b about this position along the circumference, a cut for 30 April (with "30.4.” ) is present.
  • the program disk is in the second position, the distance 4d is smaller, and the second finger 7b scans the second level 4b. He enters the recess for the 30th of June and continues for two days.
  • the program disk 4a, 4b has the same diameter on the peripheral surface, which is scanned by the Abtastrich, for simplicity, the same diameter as the control cam 5, but it can also have a smaller diameter and be mounted eccentrically on the month wheel 1, analogous to the program discs. 4 the other embodiments. In the latter case, the axial displacement of the two planes 4a, 4b with disk control cam and cam with respect to the month wheel 1 happens.
  • the arrangement of the two levels 4a, 4b of the program disc can also be reversed, ie adjacent to the second level with the coding for the 30th of the control cam 5. Then the pulley control cam or generally the pulley control is adapted to have the program disc 4a, 4b on the 28th and 29th in the position closer to the control cam and on the 30th in the remote position.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Vibration Dampers (AREA)
EP12405025A 2011-03-07 2012-03-07 Mécanisme de calandrier pour pièce d'horlogerie mécanique Withdrawn EP2498142A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH00382/11A CH704611B1 (de) 2011-03-07 2011-03-07 Hemmung und Oszillatorvorrichtung für eine mechanische Uhr.

Publications (1)

Publication Number Publication Date
EP2498142A2 true EP2498142A2 (fr) 2012-09-12

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP12405024A Withdrawn EP2498141A2 (fr) 2011-03-07 2012-03-07 Echappement pour pièce d'horlogerie mécanique
EP12405025A Withdrawn EP2498142A2 (fr) 2011-03-07 2012-03-07 Mécanisme de calandrier pour pièce d'horlogerie mécanique

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EP12405024A Withdrawn EP2498141A2 (fr) 2011-03-07 2012-03-07 Echappement pour pièce d'horlogerie mécanique

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CH (1) CH704611B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016125650A1 (de) * 2016-12-23 2018-06-28 Lange Uhren Gmbh Mechanischer Jahreskalender

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2790067A1 (fr) * 2013-04-12 2014-10-15 Montres Breguet SA Système d'échappement pour un résonateur balancier-spiral
EP3147725B1 (fr) * 2015-09-28 2018-04-04 Nivarox-FAR S.A. Oscillateur a detente tournante

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH680640A5 (en) 1989-10-02 1992-10-15 Intercollection Dev S A Office chair with retractable arm rests
CH696861A5 (fr) 2002-04-02 2007-12-31 Nardin Ulysse Sa Dispositif à roue de programme pour mécanisme de quantième perpétuel, et pièce d'horlogerie comportant un tel mécanisme.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6877893B2 (en) 1998-07-14 2005-04-12 Elmar Mock Timepiece with mechanical regulation
EP1097408B1 (fr) 1998-07-14 2005-05-04 Watch-U-License AG Indicateur de temps a regulation mecanique
AU2000222749A1 (en) 2000-02-08 2001-08-20 Wacht-U-License Ag Mechanically regulated time indicator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH680640A5 (en) 1989-10-02 1992-10-15 Intercollection Dev S A Office chair with retractable arm rests
CH696861A5 (fr) 2002-04-02 2007-12-31 Nardin Ulysse Sa Dispositif à roue de programme pour mécanisme de quantième perpétuel, et pièce d'horlogerie comportant un tel mécanisme.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016125650A1 (de) * 2016-12-23 2018-06-28 Lange Uhren Gmbh Mechanischer Jahreskalender
DE102016125650B4 (de) 2016-12-23 2018-10-31 Lange Uhren Gmbh Mechanischer Jahreskalender

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Publication number Publication date
CH704611A2 (de) 2012-09-14
EP2498141A2 (fr) 2012-09-12
CH704611B1 (de) 2020-02-28

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