EP3339974A1 - Spielnachstellungsmechanismus zwischen einer ersten kinematischen kette und einer zweiten kinematischen kette eines uhrmechanismus - Google Patents

Spielnachstellungsmechanismus zwischen einer ersten kinematischen kette und einer zweiten kinematischen kette eines uhrmechanismus Download PDF

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Publication number
EP3339974A1
EP3339974A1 EP16206414.1A EP16206414A EP3339974A1 EP 3339974 A1 EP3339974 A1 EP 3339974A1 EP 16206414 A EP16206414 A EP 16206414A EP 3339974 A1 EP3339974 A1 EP 3339974A1
Authority
EP
European Patent Office
Prior art keywords
time
wheel
satellite
civil
mechanism according
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Withdrawn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
EP16206414.1A
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English (en)
French (fr)
Inventor
Sylvain Dauby
Alain Zaugg
Jan Pittet
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.)
Montres Breguet SA
Original Assignee
Montres Breguet 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 Montres Breguet SA filed Critical Montres Breguet SA
Priority to EP16206414.1A priority Critical patent/EP3339974A1/de
Publication of EP3339974A1 publication Critical patent/EP3339974A1/de
Withdrawn legal-status Critical Current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
    • G04B35/00—Adjusting the gear train, e.g. the backlash of the arbors, depth of meshing of the gears
    • 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
    • G04B19/26—Clocks or watches with indicators for tides, for the phases of the moon, or the like
    • G04B19/262—Clocks or watches with indicators for tides, for the phases of the moon, or the like with indicators for astrological informations

Definitions

  • the subject of the present invention is a mechanism for catching up clearance between a first kinematic chain and a second kinematic chain of a clock mechanism.
  • the present invention relates to the use of a play catch mechanism in a walking equation mechanism controlled by a differential device.
  • some timepieces include, in addition to the hand which indicates the minute of the civil time, a so-called time equation mechanism which includes a needle which moves next to a graduated scale to indicate the difference between the minute of the civil time and the minute of the solar time for a given day.
  • This minute hand of the true time is actuated by a time equation cam whose profile is determined by the difference between the mean solar time and the true solar time for all the days of the year.
  • the turnout of a timepiece equipped with a walking time equation mechanism comprises two concentric minute hands, one indicating the minute of the civil time, and the other indicating the minute of the true time.
  • the difference between the minute hand of the civil time and the minute hand of the true time is determined by the difference between the mean solar time and the true solar time for the day of the year considered.
  • the minute hand of the true time of a walking equation mechanism is actuated by a time equation cam.
  • the equation of time cam is rotated at the rate of one revolution per year from a date mechanism that can be simple or perpetual.
  • the simple calendar is a mechanism arranged to indicate the day of the week, the day of the month, the month of the year or the phases of the Moon, but which does not take into account the variation of the number of days in the month. (months of 28, 29 or 30 days).
  • the user of a watch having a simple date mechanism will have to perform a manual correction every month ends that are less than 31 days. For example, February 28 or April 30 will require manual intervention.
  • the perpetual calendar mechanism it allows, as a simple date mechanism, to indicate the day, the date, the month and the phases of the Moon. But unlike a simple date mechanism, a perpetual calendar mechanism automatically takes into account the length of the months (28, 29 and 30 days), without manual intervention. A perpetual calendar mechanism therefore automatically takes into account leap years.
  • Equation cam of time 1 whose profile is determined by the difference, for each day of the year, between the mean solar time or civil time and the true solar time.
  • This equation of time 1 cam is rotated at a rate of one revolution per year from a simple or perpetual calendar mechanism that includes the timepiece.
  • Equation cam of time 1 carries a disc of months 2 which rotates at the same speed as it and which makes it possible to make coincide the position of this equation cam of time 1 with the date indicated by the date mechanism so that the minute hand of solar time 4 indicates the exact offset between the minute of the civil time and the minute of the solar time.
  • the date mechanism simple or perpetual, can be of any known type and will not be described here in its entirety. For a good understanding, it suffices to know that this date mechanism drives the equation cam of time 1 at the rate of one complete revolution per year. However, it is shown for illustrative purposes only a date mobile 6 driving a needle 8 which indicates the date (1 to 31). This mobile date of 6 rotates at a rate of one complete turn per month. It is actuated by the date mechanism and drives the equation cam of time 1 via an intermediate date wheel 10 which makes it possible to reverse the direction of rotation, and a reducing satellite mobile 12 which makes it possible to reduce the speed of rotation. rotation of one full turn per month to one full turn per year.
  • the minute hand of the solar time 4 is driven by a differential gear device 14 which has respective inputs a gear train driving a minute hand of the civil time 18, and a rake 20 which cooperates with the time equation cam 1 (on the figure 1 , the rake 20 is shown in its two extreme positions, once in full line, and the other time in dotted lines). More precisely, as is visible on the figure 1 , the differential gear device 14 comprises at least one and, preferably, two planet gears 22 driven by the timer of the watch movement of the watch. These two planet gears 22 are able to turn on themselves and to roll on the internal toothing 24 of an equation wheel of time 26.
  • the latter also has on its outer periphery a first toothed sector 28 by which it co-operates with a second toothed sector 30 which is provided with the rake 20 at one of its ends.
  • This rake 20 is subjected to the return action of a spring (not shown) attached to the frame of the watch and which tends to apply a feeler 32 forming the other end of the rake 20 against the profile of the equation cam
  • the solar weather display gear includes a sun time display pinion 34 placed in the center of the differential gear device 14.
  • This sun time display pinion 34 meshes with the planet gears 22, and on the other hand a display wheel of the solar time 38 which meshes with a roadway 40 on the barrel from which is driven the minute hand of the solar time 4.
  • This wheel 38, 40 allows to to return the display of the solar minute to the center 42 of the clockwork movement of the watch, so that the minute hand of the solar time 4 is concentric with the minute hand of the civil time 18.
  • the time equation cam 1, the rake 20 and therefore the equation wheel of time 26 are immobile.
  • the planet gears 22 are driven by the watch movement of the watch. They therefore turn on themselves and roll on the internal toothing 24 of the equation wheel of time 26, causing the display pinion of the solar time 34 in rotation, which allows the minute hand of the solar time 4 to rotate concomitantly with the minute hand of the civil time 18.
  • the gap between the needle of the minutes of solar time 4 and the minute hand of the civil time 18 remains constant over a period of 24 hours.
  • the equation cam of time 1 rotates, driven by the date mechanism that moves the calendar from one day to the next.
  • the feeler 32 which is in contact with the profile of the equation cam of the time 1 rotates the rake 20 in turn.
  • This rake 20, by pivoting drives the equation wheel of the time 26. rotation.
  • the planet gears 22 being, during this brief time interval, substantially immobile (they turn one on their own in one hour), rotate on themselves while being rotated by the equation wheel of time 26, and in turn drive the sun time display gear 34 so as to again exactly adjust the position of the minute hand of the solar time.
  • the walking time equation mechanism described above thus allows, by means of a minute hand of the civil time and a minute hand of the solar time, to display at any time the time difference between the mean solar time and the true time. Because of their complexity, mechanisms of this type nevertheless sometimes have problems of play between the teeth of the different mobiles that compose them, which affects the accuracy of the display of the temporal quantities by means of indicator organs, especially in case shocks that can cause inadvertent jumps indicator organs.
  • the present invention aims to overcome the problems described above as well as others by providing a mechanism for to make up any games between the teeth of the various mobiles which respectively make up a first kinematic chain and a second kinematic chain of a clock mechanism.
  • the subject of the present invention is a mechanism for catching up clearance between a first kinematic chain and a second kinematic chain of a clock mechanism, this mechanism for catching up the game comprising a play-catching mobile formed of a first a game-catching wheel and a second game-catching wheel, the first game-catching wheel being fixedly mounted on one axis, while the second game-catching wheel is mounted free to rotate on the axis; spring comprising a first end and a second end being arranged between the first clearance adjustment wheel and the second clearance adjustment wheel, the first end of the spring being fixed on the first clearance adjustment wheel, and the second end of the spring.
  • the first game-catching wheel being engaged with a first end-wheel of the first film channel
  • the second clearance wheel being engaged with a second end wheel of the second kinematic chain
  • the first kinematic chain being further directly kinematically connected to the second kinematic chain.
  • the present invention provides a mechanism which, arranged between a first set of gear wheels and a second set of gear wheels, makes it possible to catch any gaps between the teeth of the different gear wheels that make up these first and second trains.
  • the present invention teaches to arrange a mobile between the first and second sets of toothed wheels, a first wheel fixedly mounted on one axis, engaged with a wheel of the first train, and a second wheel mounted free in rotation on the axis, is engaged with a wheel of the second train.
  • the present invention proceeds from the general inventive idea which consists in arranging between a first and a second kinematic chain of a clock mechanism a mechanism for catching up play capable of exerting on the various components of these two kinematic chains an elastic return force. which tends to apply the teeth of these components against each other. As the two kinematic chains are also in direct contact with each other, the elastic return force is transmitted gradually to all the components of these two chains, which makes it possible to completely compensate for any games between them. components.
  • the invention will be described in its application to the compensation of games between the components of a walking time equation mechanism for displaying the minute of solar time or true time by means of a minute hand of true time (first driveline), and a device for displaying the civil time by means of an hour hand and a minute hand of the civil time (second driveline). These two display devices have in common an hour wheel. It will be understood, however, that the present invention is not limited to such an embodiment and that it is conceivable to arrange a game retrofit mechanism according to the invention between two given kinematic chains having at least one component in common.
  • a walking time equation mechanism includes a switch whose function is to indicate the solar time or true time by means of a hand of the hours of the civil time 46 and a hand of the minutes of the true time 50, concentric with the hand of the hours of the civil time 46, and which indicates the minute of the true time.
  • the latter can, for example, end with a representation of the astrological symbol of the sun 52.
  • the exact position of the minute hand of the true time 50 for a given day can be determined once in 24 hours, around midnight.
  • the time equation cam 54 is fixed on an equation wheel of time 56 which is driven at the rate of one complete revolution per year by a simple or perpetual calendar mechanism (not shown) that the timepiece.
  • This date mechanism can be of any known type and will not be described here in detail. It is sufficient, in fact, for a good understanding of the operation of the equation of walking time equation 44, to know that this date mechanism drives the equation wheel of time 56 on which is fixed the equation of time cam. at the rate of one complete turn a year. In the case where the date mechanism is also used to display the date, this date mechanism may include a date wheel 58 which rotates at a rate of one complete revolution per month by driving a date indicator 104.
  • time equation wheel 56 is driven by the date wheel 58 via an intermediate date wheel 60 for reversing the direction of rotation, and a reducing satellite wheel 62 which makes it possible to reduce the speed of rotation of the wheel. one full turn per month to one full turn per year.
  • the minute hand of the true time 50 is driven by a differential gear device 64 which has respective inputs a wheel 66 of a finishing train (see FIG. Figure 4A ) and a time equation lever 68 visible on the figure 2 .
  • the wheel 66 of the finishing train drives the needle minutes hours of the civil time 46, while the time equation lever 68 cooperates with the time equation cam 54.
  • the Figure 4A illustrates a display mechanism of the civil time which includes a clock of the hours of the civil time 70 (which one can also call wheel of the civil hours) and on which is driven the hour hand of the civil time 46.
  • the gun of the hours of civil time is driven by the wheel 66 of the finishing gear of the watch movement of the timepiece via a roadway 72 fixed for example by driving on a pinion of the floor of the civil time minutes 74 which carries a needle of 75.
  • the ground gear of the minutes of the civil time 74 drives a reducing satellite mobile 76 formed of a first satellite wheel 78 and a first satellite pinion 80 integral with the first wheel of satellite 78.
  • the satellite gear reducer 76 is pivotally mounted around a first pin 82 fixed for example by driving in an upper differential frame 84 which is secured to the gun of the hours of the civil time 70 on which is driven the hour hand of the civil time 46.
  • the first satellite pinion 80 rolls on a first internal toothing 86 of a first fixed differential ring 88 which is carried by the movement watchmaking.
  • the first satellite gear wheel 80 rotates the upper differential frame 84 and thus the civil time hour gun 70 which is integral with the differential upper frame 84.
  • the reducing satellite mobile 76 allows, by a reduction of one twelfth, from the minute of civil time to the time of civil time.
  • a multiplier satellite mobile 90 is formed of a second satellite wheel 92 and a second satellite gear 94 integral with the second satellite wheel 92.
  • the multiplier satellite mobile 90 is mounted free around a second fixed pin 96 for example by driving in the differential upper frame 84 which is secured to the gun of the hours of the civil time 70.
  • the canon of the hours of the civil time 70 and thus the differential frame 84 rotate, they cause the second pin 96 and consequently , the multiplier satellite mobile 90 whose second satellite gear 94 rolls on a second internal toothing 98 of a mobile differential ring 100 which will be seen below that it is engaged with the equation of time cam 54.
  • the second satellite wheel 92 in turn causes a floor of the minutes of the true time 102 on which is driven the minute hand of the true time 50.
  • gear ratios e between the gun of the hours of the civil time 70, the second wheel of satellite 92, the second pinion of satellite 94 and the mobile differential ring 100 one carries out a multiplication by twelve between the hour of the civil time and the minute of the time true and one thus obtains the display of the minute of the true time.
  • the multiplier satellite mobile 90 makes it possible, by a multiplication by twelve, to go from the time of the civil time to the minute of the true time.
  • the reducing satellite mobile 76 and the multiplying satellite mobile 90 rotate on themselves by describing a circular trajectory centered on the gun of the hours of the civil time 70.
  • the reducing satellite mobile 76 and the mobile multiplier satellite 90 move on the same circle, centered on the gun of the hours of the civil time 70, being angularly spaced.
  • the mobile differential ring 100 is pivotally controlled by the equation lever of time 68 provided with a probe tip 106 through which the time equation lever 68 is in contact with the profile of the time equation cam 54.
  • This time equation lever 68 is held in resilient support against the profile of the cam. equation of time 54 by a spring 108.
  • This time equation lever 68 is also provided with a first tooth 110 engaged with a corresponding second tooth 112 provided on the mobile differential ring gear 100 to control the movement of the latter. It is understood that at a time close to midnight when the date mechanism changes date, it controls the advance of a step of the date wheel 58. During this brief moment when the change of date occurs, the differential upper frame 84 and thus the gun of the hours of the civil time 70 can be considered as immobile.
  • the mobile differential crown 100 drives the second satellite gear 94 and thus the second satellite wheel 92 which, in turn, meshes with the floor of the minutes of the true time 102 on which is driven the minute hand of the true time 50.
  • the position of the minute hand of the true time 50 is thus adjusted for the day to come. In the case of a sliding date mechanism, the position of the minute hand of the true time 50 is adjusted continuously.
  • a screw 114 closes the differential upper frame 84 on a lower differential frame 116.
  • the differential frames 84 and lower 116 therefore rotate together when the differential gear device 64 is operating.
  • a play-catching mechanism 118 is mounted between the differential upper frame 84 and the lower differential frame 116.
  • This play-catching mechanism 118 consists of an axle 120 mounted free to rotate between the differential upper frame 84. and the lower differential frame 116 and on which are mounted a first game-catching wheel 122 and a second game-catching wheel 124.
  • the first game-catching wheel 122 is fixedly mounted, typically by driving, on the axis 120.
  • the second play-catching wheel 124 it is driven on a tube 126 which is rotatably mounted on the axis 120.
  • the first play-catching wheel 122 meshes with the floor of the minutes of the true time 102, while the second play-catching wheel 124 meshes with the floor gear of the civil time minutes 74.
  • a spring 128 comprising a first end 128a and a second end 128b is arranged between the first clearance adjustment wheel 122 and the second clearance adjustment wheel 124.
  • the first end 128a of the spring 128 is fixedly mounted on the first play-catching wheel 122, while the second end 128b of the spring 128 is fixed to the second play-catching wheel 124, typically by means of a pin 130.
  • the gap between the minute hand of the civil time 75 and the minute hand of the true time 50 remains constant.
  • the ground pinion of the minutes of the civil time 74 and the floor of the minutes of the true time 102 turn at the same speed and the catch-up mechanism 118 simply turns on itself.
  • the time pinion of civil time minutes 74 which meshes with the second play-catching wheel 124 is substantially stationary, while the true-time minute carriageway 102 which meshes with the first play-catching wheel 122 is rotated in one way or the other by the mobile differential ring 100 which itself is controlled by the time equation cam 54 via the equation lever of the time 68.
  • the first catch-up wheel 122 is pivoted relative to the second play-catching wheel 124 which is fixed and the spring 128 stretches and exerts on the first play-catching wheel 122 on the one hand, and on the second wheel on the other hand, an elastic return force.
  • This elastic return force is transmitted gradually to all the elements of a first kinematic chain formed by the pinion of the floor of the minutes of the civil time 74, the satellite gear reducer 76 and the differential upper frame 84 whose barrel of hours of civil time 75 (which can also be called hour wheel) is integral, and all the elements of a second kinematic chain formed by the floor of the minutes of the true time 102, the satellite mobile multiplier 90 and the frame Differential upper 84.
  • the teeth of different gears and wheels are applied against each other, which compensates for all the games between these teeth.
  • the elastic return torque exerted by the spring 128 varies between a minimum value and a maximum value.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
EP16206414.1A 2016-12-22 2016-12-22 Spielnachstellungsmechanismus zwischen einer ersten kinematischen kette und einer zweiten kinematischen kette eines uhrmechanismus Withdrawn EP3339974A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16206414.1A EP3339974A1 (de) 2016-12-22 2016-12-22 Spielnachstellungsmechanismus zwischen einer ersten kinematischen kette und einer zweiten kinematischen kette eines uhrmechanismus

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Application Number Priority Date Filing Date Title
EP16206414.1A EP3339974A1 (de) 2016-12-22 2016-12-22 Spielnachstellungsmechanismus zwischen einer ersten kinematischen kette und einer zweiten kinematischen kette eines uhrmechanismus

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EP3339974A1 true EP3339974A1 (de) 2018-06-27

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EP16206414.1A Withdrawn EP3339974A1 (de) 2016-12-22 2016-12-22 Spielnachstellungsmechanismus zwischen einer ersten kinematischen kette und einer zweiten kinematischen kette eines uhrmechanismus

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113741163A (zh) * 2018-07-31 2021-12-03 宝玑表有限公司 带有弹性指针的钟表显示机构
USD988898S1 (en) * 2022-02-14 2023-06-13 Richemont International Sa Watch dial

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1286233A1 (de) 2001-08-07 2003-02-26 Piguet, Frédéric S.A. Kalenderuhr mit Äquationsvorrichtung
EP1772783A1 (de) * 2005-10-10 2007-04-11 Montres Breguet S.A. Uhrwerkvorrichtung mit konstanter Kraft
CH698613B1 (fr) * 2004-11-29 2009-09-15 Richemont Int Sa Mécanisme d'équation du temps avec affichage des minutes marchantes et pièce d'horlogerie munie d'un tel mécanisme.
WO2015049090A1 (fr) * 2013-10-03 2015-04-09 Gfpi Sa Mouvement d'horlogerie et piece comprenant un tel mouvement

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1286233A1 (de) 2001-08-07 2003-02-26 Piguet, Frédéric S.A. Kalenderuhr mit Äquationsvorrichtung
CH698613B1 (fr) * 2004-11-29 2009-09-15 Richemont Int Sa Mécanisme d'équation du temps avec affichage des minutes marchantes et pièce d'horlogerie munie d'un tel mécanisme.
EP1772783A1 (de) * 2005-10-10 2007-04-11 Montres Breguet S.A. Uhrwerkvorrichtung mit konstanter Kraft
WO2015049090A1 (fr) * 2013-10-03 2015-04-09 Gfpi Sa Mouvement d'horlogerie et piece comprenant un tel mouvement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113741163A (zh) * 2018-07-31 2021-12-03 宝玑表有限公司 带有弹性指针的钟表显示机构
USD988898S1 (en) * 2022-02-14 2023-06-13 Richemont International Sa Watch dial

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