EP4187328A1 - Kalendersystem für uhr - Google Patents

Kalendersystem für uhr Download PDF

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Publication number
EP4187328A1
EP4187328A1 EP21211473.0A EP21211473A EP4187328A1 EP 4187328 A1 EP4187328 A1 EP 4187328A1 EP 21211473 A EP21211473 A EP 21211473A EP 4187328 A1 EP4187328 A1 EP 4187328A1
Authority
EP
European Patent Office
Prior art keywords
mobile
tooth
finger
drive
cam
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.)
Pending
Application number
EP21211473.0A
Other languages
English (en)
French (fr)
Inventor
Christian Fleury
Frédéric JOLLIET
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.)
Rolex SA
Original Assignee
Rolex 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 Rolex SA filed Critical Rolex SA
Priority to EP21211473.0A priority Critical patent/EP4187328A1/de
Priority to JP2022187953A priority patent/JP2023081323A/ja
Priority to US17/994,148 priority patent/US20230168630A1/en
Priority to CN202211522537.5A priority patent/CN116203817A/zh
Publication of EP4187328A1 publication Critical patent/EP4187328A1/de
Pending legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • 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
    • 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
    • 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
    • G04B19/2538—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 automatically corrected at the end of months having less than 31 days
    • 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
    • G04B19/25393—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released by their own energy source which is released at regular time intervals

Definitions

  • the invention relates to a timepiece calendar system.
  • the invention also relates to a watch movement comprising such a watch calendar system.
  • the invention also relates to a timepiece comprising such a timepiece movement or such a timepiece calendar system.
  • the invention also relates to a method of operating such a timepiece calendar system or such a timepiece movement or such a timepiece.
  • the invention finally relates to a transmission system that can equip such a watch calendar system or such a watch movement or such a timepiece.
  • the document EP3567438 describes an embodiment of a calendar system, in particular an annual calendar system, comprising a training device equipped with a single and unique training mobile.
  • This drive wheel set comprises a first finger intended to actuate one of the thirty-one teeth of a date disc in order to allow a first jump of said date disc and thus allow the date to change regardless of the date, as well as an additional finger, angularly offset with respect to the first finger, intended to actuate a tooth of a finger movably mounted on the date disc in order to allow an additional jump of said date disc at the end of a month of thirty days or less.
  • the drive device comprises a calendar cam and an elastic rocker. The cooperation of the cam and the rocker enables instantaneous rotation of the drive wheel, which allows instantaneous passage of the date regardless of the number of jumps made by the date disc.
  • the document CH680630 also discloses a training device provided with a single and unique training mobile, in particular within a perpetual calendar system.
  • This solution is hardly compatible with the implementation of an instantaneous jump training device. Indeed, the movement performed by the drive wheel set to allow the multiple jumps of the date wheel during the unwinding of a hypothetical elastic rocker should be maximized. The winding of the elastic rocker, which should also be maximised, would thus take place on a limited movement of the drive wheel, which would induce abrupt torque variations likely to generate substantial drops in amplitude at the level of the oscillator, in particular at the level of a balance-spring type oscillator.
  • the document EP0987609 describes a first mobile drive provided with an axis of rotation fixed relative to a frame, as well as a second mobile drive provided with an axis of rotation movable relative to the same frame, but the drive pin of the second mobile is designed to drive a tooth fixed to a date disc.
  • the second mobile is mounted on a movable rocker relative to the frame against a return spring generating superfluous energy consumption which is hardly compatible with the implementation of an instantaneous jump drive device .
  • the document CH710109 describes a calendar system comprising a first drive wheel set with a fixed axis of rotation relative to a frame, and a second drive wheel set with a fixed axis of rotation relative to the same frame, but the finger drive of the second mobile is provided to drive an additional tooth fixed to a date wheel.
  • the finger of the second mobile is mounted to move against a month programming cam arranged coaxially with the second mobile, under the effect of a return spring.
  • this return spring induces superfluous energy consumption and generates torque fluctuations throughout a day, which is hardly compatible with the implementation of an instantaneous jump drive device .
  • the month programming cam is particularly bulky, which leaves little surface area available for positioning a calendar cam and an elastic rocker within the drive device.
  • the installation of a month programming cam arranged coaxially with the second mobile dictates, at least partially, the positioning of the axis of the second mobile relative to the frame, which can be a limiting factor for optimizing the drive of the date wheel under the actuation of the drive finger of the second mobile.
  • this finger performs a complete rotation around the month programming cam every day, which can lead to premature wear of the drive device, all the more so if the second finger is elastically returned against the cam under the effect of a return spring.
  • the object of the invention is to provide a watch calendar system improving the systems known from the prior art and to solve the problems mentioned.
  • the invention proposes a system of simple, efficient and compact horological calendar which is also compatible with an annual, semi-perpetual or perpetual calendar system.
  • the timepiece 400 is for example a watch, in particular a wristwatch.
  • the timepiece 400 comprises a timepiece movement 300, intended to be mounted in a case or a timepiece box in order to protect it from the external environment.
  • the watch movement 300 can be a mechanical movement, in particular an automatic movement, or even a hybrid movement.
  • movement 300 can be an electronic or electromechanical movement.
  • the watch movement 300 includes a calendar system 200.
  • the calendar system 200 can be a calendar module attached to the rest of the movement.
  • the movement and/or the calendar module comprises a frame 199 comprising for example one or more plates and possibly bridges.
  • the calendar system is semi-perpetual and displays the indication of dates, days, and months.
  • the calendar can be of any other type, including annual or perpetual.
  • the calendar system can display any other set of indications.
  • the date mobile 4, which may in particular comprise a date disc 4, is preferably centered on the calendar system 200 or on the movement 300 along an axis A4.
  • the mobile 4 of the dates comprises a set of teeth 41 provided with 31 teeth, as well as a finger 5 movably mounted on said mobile 4, in particular pivotally mounted on said mobile 4 along an axis of rotation A5.
  • the finger 5 comprises the tooth 51 at one of its ends, in particular at a longitudinal end opposite to that on which the axis of rotation A5 is located.
  • a first configuration of the calendar system in particular in a first configuration of the activation system 6, 7 which can be called a deactivated configuration
  • the tooth 51 is movable relative to the mobile 4.
  • 7 can be called an activated configuration
  • tooth 51 is immobile relative to mobile 4.
  • the toothing 41 takes the form of an internal toothing, and the tooth 51 is oriented inwards.
  • the teeth of the toothing 41 and the tooth 51 are preferentially oriented towards the axis A4.
  • the tip radius RT5 (defined from the axis A4) of the tooth 51 is different from the tip radius RT4 (defined from the axis A4) of the teeth of the toothing 41, when the tooth 51 is immobile relative to the mobile 4, in particular motionless around the axis A5 as illustrated in the figure 6 .
  • the tip radius RT5 is less than the tip radius RT4, or even less than 0.9 ⁇ RT4, when the tooth 51 is immobile relative to the mobile 4, in particular immobile around the axis A5.
  • tooth 51 protrudes or is likely to protrude from toothing 41.
  • Such a configuration of tooth 51 makes it possible to maximize the drive of mobile 4 when the latter is driven by the cooperation between tooth 51 and the drive device. drive 100. More particularly, such a conformation of tooth 51 makes it possible to potentially actuate mobile 4 over several angular steps when the latter is driven by the cooperation between tooth 51 and drive device 100.
  • the finger 5 is capable of cooperating with a follower 6, in particular a rocker 6 pivotally mounted along an axis A6 on the frame 199 of the calendar system 200 or of the movement 300.
  • the finger 5 comprises a contact surface 52 provided to cooperate by contact with a side 62 of the follower 6.
  • the follower 6 also comprises a pin or a pin 61 intended to be housed in a groove 71 of a month cam 7 here taking an annular shape.
  • flanks 71a, 71b of the groove 71 of the cam 7 act respectively as cam profiles 71a, 71b, which are provided to control the position of the follower 6, in particular the angular position of the follower 6 around the axis A6, by through pin 61, independently of any return spring.
  • At least a first position of the cam 7 defines a first position of the follower 6 allowing mobility of the finger 5 or of the tooth 51 around the axis A5 in at least one position of the mobile 4. More particularly, at least a second position of the cam 7 defines a second position of the follower 6 prohibiting mobility of the finger 5 or of the tooth 51 around the axis A5 in at least one position of the mobile 4.
  • the tooth 51 is in protrusion of the toothing 41 in the embodiment described.
  • the implementation of the activation system 6, 7 makes it possible to govern the programming of an annual, semi-perpetual or perpetual cycle, as will be described below.
  • the cam 7 is centered on the calendar system 200 or on the movement 300 along an axis A7.
  • axes A4 and A7 coincide.
  • the mobile 4 and the cam 7 are preferably arranged coaxially.
  • Mobile 4 and cam 7 are advantageously linked by a transmission system which will be described in detail below.
  • the cam 7 comprises a toothing 72 capable of being driven periodically by teeth of a toothing 42 of the mobile 4, via a pinion 8 pivoted along an axis A8, as will be described below.
  • the toothing 42 takes the form of an external toothing and the toothing 72 takes the form of an internal toothing.
  • the calendar system 200 further comprises a day star 9, which is preferably centered on the calendar system 200 or on the movement 300 along an axis A9.
  • a day star 9 which is preferably centered on the calendar system 200 or on the movement 300 along an axis A9.
  • the axes A4, A7 and A9 coincide.
  • the elements 4, 7 and 9 are preferably arranged coaxially.
  • day star 9 comprises a set of teeth 91 with seven teeth.
  • the mobile 4 and the star 9 are angularly indexed in position relative to the frame 199 by means of jumpers 98 and 99 respectively (the latter being represented schematically on the figure 2 ).
  • the cam 7 is, for its part, angularly indexed relative to the frame 199 by the mobile 4, via the pinion 8. More particularly, this pinion 8 is specifically shaped so as to allow angular locking with less play of the cam 7 when the latter is not driven by one of the teeth of the toothing 42 of the mobile 4, as will be described below.
  • Mobile 4 and star wheel 9 are shaped and/or arranged so that they can be driven periodically, in particular every 24 hours, by drive device 100.
  • Cam 7 is shaped and/or arranged so as to be able to be driven periodically, at each end and possibly at each beginning of the month, by the drive device 100 via the mobile 4 and the pinion 8.
  • THE figure 3 And 4 respectively illustrate a top and bottom view of the drive device 100.
  • the drive device 100 is connected to the going train of the movement 300 by means of an hour wheel 201.
  • the drive device 100 comprises a drive wheel set 1 pivoted about an axis A1 and provided with a drive finger 11 integral in rotation with a wheel 12.
  • the drive finger 11 is configured and/or arranged in so as to drive, every 24 hours, the mobile 4 by cooperating by contact with one of the teeth of the toothing 41.
  • the drive finger 11 is also shaped to stop the mobile 4 after having driven said mobile 4. training is advantageously of the instantaneous type.
  • the drive finger 11 comprises a first rigid part 11a, as well as a second elastic part 11b.
  • a driving finger conformation advantageously allows rapid correction of the dates when the finger 1 is located between two teeth of the toothing 41, in particular after a date jump, as is taught in the document EP3483663 .
  • the drive finger 11 is here oriented outwards. In other words, drive finger 11 extends radially relative to axis A1 away from said axis A1, in particular until it reaches a circle of radius RT1 (for Head Radius) centered on axis A1 as shown on the Figure 6 . Furthermore, the axis A1 is here arranged on a circle of radius R1, which is centered on the axis A4.
  • the drive device 100 also comprises a drive wheel set 2 pivoted along an axis A2, which is provided with the drive finger 21.
  • This finger 21 is integral in rotation with a wheel 22.
  • the drive finger 21 is provided to drive the mobile 4 by cooperating by contact with the tooth 51 of the finger 5, in particular when the follower 6 prevents mobility of the finger 5 or of the tooth 51 around the axis A5. This training takes place at the end of every month of thirty days or less.
  • the drive wheel set 2 is also provided with a drive pin 23 integral in rotation with the wheel 22.
  • the drive pin 23 is provided to drive the star wheel 9 by cooperating by contact with one of the teeth of toothing 91.
  • the drive finger 21 is oriented outward.
  • drive finger 21 extends radially relative to axis A2 away from said axis A2, in particular until it reaches a circle of radius RT2 (for Head Radius) centered on axis A2 , as shown in the figure 6 .
  • RT2 for Head Radius
  • the axis A2 is here arranged on a circle of radius R2, which is centered on the axis A4.
  • the radius RT2 is different from the radius RT1. More particularly, the radius RT2 is greater than the radius RT1, or even greater than 1.5xRT1, or even greater than 1.8xRT1.
  • the radius R2 is different from the radius R1. More particularly, radius R2 is advantageously less than radius R1, or even less than 0.9xR1, or even less than 0.8xR1.
  • Such a conformation of the mobile drive 2 has the advantage of ensuring that the cooperation by contact of the finger 21 and the tooth 51 allows training of the mobile 4 over one or more angular pitches of the mobile 4 when the tooth 51 is immobilized. relative to the mobile 4, in particular immobilized in rotation around the axis A5, while the conformation of the mobile drive 1 allows a drive of the mobile 4 on a single and unique angular step of the mobile 4.
  • such conformations of drive wheels 1 and 2 cooperate respectively with a wheel set 4 comprising an internal toothing 41 equipped with a head radius RT4, and with an internal tooth 51 equipped with a head radius RT5, the radius of head RT5 being less than the head radius RT4, or even less than 0.9 ⁇ RT4, when the tooth 51 is immobilized relative to the mobile 4, in particular immobilized in rotation around the axis A5.
  • the led of the mobile 4 is thus optimized to enable it to perform, for a single action of the finger 21, up to several jumps or several angular steps.
  • the drive mobile 2 and the mobile 4 are arranged and/or configured so as to allow several jumps or several angular steps of the mobile 4 for a single action of the finger 21.
  • a single action of the finger 21 we mean a partial or complete rotation of a turn of the finger 21 around the axis A2.
  • Drive mobiles 1 and 2 are kinematically connected to each other via a drive mobile 3 of axis A3. More particularly, the wheels 12 and 22 are kinematically connected to each other via a wheel 32 of the third mobile 3, which is here inserted between the wheels 12 and 22.
  • the axis A3 is in the embodiment described arranged on a circle of radius R3, which is centered on axis A4.
  • radius R3 is different from radii R1 and R2. More particularly, radius R3 is advantageously greater than radii R1 and R2.
  • the third mobile 3 also comprises a wheel 31, integral in rotation with the wheel 32 according to at least one direction of rotation, which makes it possible to connect the hour wheel 201 to the third mobile 3 by means of two pinions 202a, 202b fixed to the to each other. More particularly, wheel 201 drives pinion 202a, and pinion 202b drives wheel 31, which in turn drives wheel 32. The latter thus drives wheels 12 and 22, in particular in the same direction of rotation.
  • the drive device 100 in particular the mobiles 1, 2 and 3, is thus connected to the going train of the movement 300 via the hour wheel 201.
  • the mobiles 1 and 2 are arranged on either side on the other side of a plane passing through the axis A3 of the driving wheel set 3 and through the axis of the movement (in particular coinciding with the axis A4 of the date wheel set).
  • the drive device 100 comprises an instantaneous drive device 92.
  • This mainly comprises a calendar cam 96 and a spring rocker 97 pivoted on the frame 199.
  • the mobile 3, more particularly visible on the exploded view of the figure 5 includes the 96 calendar cam which is provided to cooperate with the spring rocker 97, in particular with a roller 971 pivoted on the spring rocker 97.
  • the cam 96 is in particular integral with the wheel 32.
  • the cooperation of the cam 96 and the spring rocker 97 allows a instant drive of mobile 4 via drive mobiles 1 and/or 2, in particular fingers 11 and/or 21, over at least one angular pitch of mobile 4.
  • the cooperation of cam 96 and rocker -spring 97 also allows instantaneous drive of the star 9 through the mobile drive 2, in particular of the finger 23, on an angular pitch of the star 9.
  • the drive device 100 comprises a unidirectional link device 94.
  • the third mobile 3 comprises the unidirectional link device 94, which makes it possible to link the wheels 31 and 32 in rotation according to one and the same direction of rotation.
  • This device comprises a pawl 941 pivoted on wheel 31, which is elastically returned by a spring 942, and which is capable of cooperating by contact with a pin or a pin 321 of wheel 32.
  • the implementation of such a device link notably authorizes a correction at any time of the calendar system 200, regardless of the prior manipulations of the calendar system 200 or of the movement 300.
  • the training device 100 accumulates elastic potential energy thanks to the winding of the spring 972 of the spring rocker 97, under the effect of the rotation of the cam 96, causing a deformation of the spring 972, the cam 96 being itself driven by the movement 300 via the hour wheel 201.
  • the spring 972 restores the accumulated energy and the spring rocker 97 thus becomes driving.
  • the latter leads cam 96 on a given angular range until the roller 971 is positioned in a hollow 962 of the cam 96, which is made possible in particular by the unidirectional connection 94.
  • the drive mobile 1 in kinematic connection with the cam 96, instantly drives the mobile 4 on an angular pitch by the cooperation of the finger 11 and a tooth of the gearing 41.
  • the drive wheel set 2 also in kinematic connection with the cam 96, instantly drives the wheel set 4 over at least one additional angular pitch by the cooperation of the finger 21 and the tooth 51 when the latter is immobilized relative to the wheel set 4, in particular when the latter is immobilized around the axis A5 under the effect of the activation system 6.7.
  • the conformation of the drive device 100 thus allows, for a given movement of the cam 96 under the effect of the rocker 97, the drive of the mobile 4 on one step, two steps, three steps, or four angular steps ) of the mobile 4.
  • the drive device 100 comprises two separate drive mobiles 1, 2 pivoted along two separate axes A1 and A2, the respective movements of the fingers 11 and 21 taking place simultaneously and their respective contact with one of the teeth of the toothing 41 and the tooth 51 taking place successively.
  • the axes A1, A2 are arranged on circles having distinct radii R1, R2.
  • teeth 11 and 21 rotate at the same speed.
  • the teeth of the wheels 12 and 22, 32 can in particular comprise the same number of teeth and extend over the same level or the same plane.
  • the drive device 100 comprises a device 93 for deactivating the jumper 98.
  • This device 93 comprises a jumper cam 95 which is provided to cooperate with the jumper 98, in particular with a roller 981 pivoted on a part 982 forming a spring of the jumper 98.
  • Such a device advantageously makes it possible to reduce, or even cancel, the indexing or holding torque of the mobile 4 in position generated by the jumper 98 when the finger 11 leads one of the teeth of the toothing 41 and/or when the finger 21 leads the tooth 51, in particular when the cam 96 is driven under the effect of the spring rocker 97, in particular under the effect of the return of the energy accumulated by the spring 972.
  • the drive wheel set 1 includes the cam 95 provided to cooperate with the jumper 98.
  • the mobile drive 1 preferably comprises the jumper cam 95 of a jumper deactivation device 93, in addition to the first finger 11 and the wheel 12.
  • the mobile drive 2 preferably comprises a third drive finger 23, in addition to the second finger 21 and the wheel 22.
  • the drive wheel set 3 preferably comprises the calendar cam 96 of an instantaneous drive device 92, as well as a device unidirectional connection 94, in addition to the wheels 31 and 32.
  • any other arrangement of the various elements 23, 95, 96 on the various drive mobiles could be envisaged.
  • Such a conformation of the driving wheels 1, 2 and 3 makes it possible to distribute and make the various elements taking part in the driving device 100 and/or the instantaneous driving device 92 and/or the connecting device cohabit as well as possible.
  • unidirectional 94 and/or to the jumper deactivation device 93 This has the particular advantage of achieving the implementation of a particularly thin drive device 100 and a fortiori a particularly thin calendar system 200 .
  • THE figures 7 to 11 illustrate how the calendar system works when changing the date to the end of a 28-day February month.
  • the mobile 4 performs four jumps or angular steps.
  • the mobile 4 is actuated under the effect of the restitution of the energy accumulated by the spring 972 of the rocker 97, which drives the calendar cam 96, as well as the fingers 11, 21, until the roller 971 is positioned in the hollow 962 of cam 96.
  • FIG 7 illustrates the calendar system on February 28 at midnight, just before the jump of mobile 4.
  • the roller 971 begins the descent of the calendar cam 96 from its top 961 as illustrated on the figure 4 . Finger 21 then comes into contact with tooth 51, while finger 11 is out of reach of toothing 41.
  • the tooth 51 is here immobile relative to the mobile 4, in particular immobile around the axis A5, under the effect of the cooperation of the respective surfaces 52 and 62 of the finger 5 and the follower 6. This is made possible by the cooperation of the follower 6 and the cam 7, in particular by the cooperation of the pin 61 and the groove 71 which positions the side 62 of the follower 6 in such a way that the tooth 51 cannot retract under the actuation of the finger 21
  • the activation system 6, 7 is in this configuration, the contact between the finger 21 and the tooth 51 induces the rotation of the mobile 4 around the axis A4.
  • FIG 8 illustrates the calendar system once the mobile 4 has moved through a first angular step around the axis A4, after having seen the finger 21 perform a rotation through a first angle ⁇ 1 around the axis A2. Finger 11 here remains out of reach of toothing 41 despite the rotation it has already performed around axis A1.
  • FIG 9 illustrates the calendar system once the mobile 4 has moved through a second angular step around the axis A4, after having seen the finger 21 perform a rotation through a second angle a2 around the axis A2. Finger 11 here remains out of reach of toothing 41 despite the rotation it has already performed around axis A1.
  • FIG 10 illustrates the calendar system once the mobile 4 has moved by a third angular step around the axis A4, after having seen the finger 21 perform a rotation by a third angle a3 around the axis A2.
  • finger 21 leaves contact with tooth 51 and finger 11 comes into contact with one of the teeth of toothing 41.
  • FIG 11 illustrates the calendar system on March 1, once the mobile 4 has moved by a fourth angular step around the axis A4, after having seen the finger 11 rotate through a first angle ⁇ 1 around the axis A1. More specifically, the figure 11 illustrates the calendar system just after the passage of the date, when the roller 971 is in the hollow 962 of cam 96. In this configuration, the finger 11 is positioned between two teeth of the toothing 41 so that the finger 11 blocks the mobile 4 and thus prevents any unwanted additional jump of said mobile.
  • the device 93 for deactivating jumper 98 (not shown in the figures 7 to 11 ) is actuated, in particular by the rotation of the mobile drive 1 around the axis A1.
  • Such a device makes it possible to minimize, or even cancel, the torque for indexing or maintaining the mobile 4 in position when the mobile 4 is actuated under the effect of the fingers 11 and/or the finger 21.
  • the day indication is driven when the finger 23 comes into contact with one of the teeth of the toothing 91 of the star 9, which causes said star to be driven.
  • the finger 23 is positioned between two teeth of the toothing 91 such that the finger 23 blocks the star 9 and thus prevents any undesired additional jump of said star.
  • the finger 23 can come into contact with one of the teeth of the toothing 91 of star 9 at the moment (or substantially at the moment) when finger 11 comes into contact with one of the teeth of toothing 41.
  • the follower 6 is here positioned by the cam 7, in particular by the pin 61 and the groove 71, such that the flank 62 of the follower is out of reach of the surface 52 of the finger 5.
  • the finger 5 is mobile around the axis A5, and the tooth 51 retracts under the actuation of the finger 21.
  • the finger 21 does not drive the mobile 4 in rotation around the axis A4.
  • Mobile 4 is finally driven on a single and unique angular pitch around the axis A4, by the cooperation of the finger 11 and a tooth of the toothing 41 on a first angle ⁇ 1 around the axis A1.
  • the star 9 is, for its part, driven on an angular step around the axis A9, under the actuation of the finger 23.
  • the follower 6 is here positioned by the cam 7, in particular by the pin 61 and the groove 71, such that the flank 62 of the follower is out of reach of the surface 52 of the finger 5.
  • the finger 5 is mobile around the axis A5, and the tooth 51 retracts under the actuation of the finger 21.
  • the finger 21 does not drive the mobile 4 in rotation around the axis A4.
  • the mobile 4 is finally driven on a single and unique angular step around the axis A4, by the cooperation of the finger 11 and a tooth of the toothing 41 on a first angle ⁇ 1 around the axis A1.
  • the star 9 is, for its part, driven on an angular step around the axis A9, under the actuation of the finger 23.
  • THE figures 15 to 16 illustrate how the calendar system works when the date changes to the end of April. During this phase, the mobile 4 performs two jumps or angular steps.
  • FIG 15 illustrates the calendar system on April 30 at midnight.
  • the follower 6 is here positioned by the cam 7, in particular by the pin 61 and the groove 71, so that the side 62 of the follower 6 is in contact with the surface 52 of the finger 5.
  • this causes the rotation of the mobile 4 around the axis A4, even though the finger 11 is out of reach of the teeth 41.
  • FIG 16 illustrates the calendar system once the mobile 4 has moved through a first angular step around the axis A4, after having seen the finger 21 rotate through a third angle a3 around the axis A2.
  • the finger 21 leaves the contact with the tooth 51 and the finger 11 comes into contact with one of the teeth of the toothing 41 so that it can in turn drive the mobile 4 on a second angular step around the axis A4.
  • the star 9 is also driven under the actuation of the finger 23.
  • the follower 6 On April 28 at midnight, just before the jump of the mobile 4, the follower 6 is positioned by the cam 7, in particular by the pin 61 and the groove 71, so that the side 62 of the follower is out of reach of the surface 52 of finger 5.
  • finger 5 is mobile around axis A5, and tooth 51 retracts under the actuation of finger 21.
  • finger 21 does not drive mobile 4 in rotation around of axis A4.
  • the mobile 4 is finally driven on a single and unique angular step around the axis A4, by the cooperation of the finger 11 and a tooth of the set of teeth 41 over a first angle ⁇ 1 around the axis A1.
  • the star 9 is, for its part, driven on an angular step around the axis A9, under the actuation of the finger 23.
  • the follower 6 is positioned by the cam 7, in particular by the pin 61 and the groove 71, so that the side 62 of the follower is out of range of the surface 52 of the finger 5.
  • the finger 5 is mobile around the axis A5, and the tooth 51 retracts under the actuation of the finger 21.
  • the finger 21 does not drive the mobile 4 in rotation around the axis A4.
  • the mobile 4 is finally driven on a single and unique angular step around the axis A4, by the cooperation of the finger 11 and a tooth of the toothing 41 on a first angle ⁇ 1 around the axis A1.
  • the star 9 is, for its part, driven on an angular step around the axis A9, under the actuation of the finger 23.
  • the activation system 6, 7 is preferably arranged so that at least a first position of the month cam 7 defines a first position of the follower 6 authorizing the retraction of the first tooth 51 and that at least a second position of the month cam 7 defines a second position of the follower 6 prohibiting the retraction of the first tooth 51.
  • the single action of the first drive finger 21 on the first tooth 51 causes, depending on the instant of activation of the first tooth 51 by the activation system 6, 7, a displacement of the mobile of the dates 4 of n steps, with n an integer taking any value between 1 and N.
  • the first finger 21 exerts on the first tooth 51 a mechanical retraction action of the first tooth 51 without driving the mobile of the dates 4.
  • the activation system 6, 7 controls the activation of the finger 51 each month as for a month of 30 days or for a month of 31 days, and this without modifying the elements of the drive device.
  • the cam 7, in particular the groove 71 could in particular be modified.
  • the month 7 cam is driven in rotation around an axis A7 during certain date passages.
  • the toothing 72 of the cam 7 is capable of being periodically driven by teeth of the toothing 42 of the mobile 4, via the pinion 8 interposed between the mobile 4 and the cam 7.
  • the curved profile 43 is centered on the axis A4 and at least partially defines the outer contour of the driving mobile 4.
  • the driving toothing 42, the curved profile 43, the driven toothing 72 and the toothing 81 are arranged on the same level or in the same plane.
  • the driving wheel 4, the driven wheel 7 and the intermediate pinion 8 are arranged so that the driving wheel 4 drives in movement, via the intermediate wheel 8, the driven wheel 7 by 1/m pitch during at least certain steps of the mobile leading 4, with m a real number greater than 1 and preferably between 2 and 20.
  • the driving mobile 4, the driven mobile 7 and the intermediate pinion 8 are arranged so that the driving mobile 4 can define an angular position with less play of the driven mobile 7 via the pinion 8 while the driving mobile 4 is in an angular position given, in particular via the curved profile 43.
  • the pinion 8 is provided with a toothing 81 which has the particularity on the one hand of extending over a single and unique level or plane P8, and on the other hand of comprising teeth 81i which are not evenly distributed with respect to the axis A8 of said pinion.
  • the toothing 81 has the particularity of comprising distinct first and second pitches p1, p2.
  • pitch p between two consecutive teeth can here be likened to the notion of distance d between the teeth measured in a substantially orthoradial direction relative to the axis A8, and this independently of the number of teeth and/or the module of the teeth of the pinion.
  • This distance can be measured at the level of the head 811i of each of the teeth.
  • the distance d corresponds here to the length of an arc centered on the axis A8, which connects the heads 811i of two consecutive teeth.
  • the notion of pitch p between two consecutive teeth can here be assimilated to the notion of angle ⁇ formed by two planes P81i perpendicular to the plane P8, which respectively cross two consecutive teeth passing through the axis A8 and through the respective head 811i of each of these teeth.
  • d and ⁇ are correlated, with d ⁇ axr where r represents the tip radius of the pinion, and ⁇ is expressed in radians.
  • each tooth 81i can constitute a tooth 81a arranged between two teeth 81b and 81c. More particularly, the teeth 81b and 81c are arranged on either side of the tooth 81a according respectively to a first direction s1 and a second direction s2 seen from the tooth 81a. Tooth 81b is placed at a first distance d1 from tooth 81a, while tooth 81c is placed at a second distance d2 from tooth 81a. The first and second distances d1, d2 are different and the first and second directions s1, s2 are opposite.
  • d2>d1 on the figure 21 Preferably, d2>1.5xd1, or even d2>1.6 ⁇ d1, or even d2>1.7 ⁇ d1.
  • the direction s1 corresponds to the trigonometric direction and the direction s2 to the clockwise direction on this same figure 21 .
  • the angles ⁇ 1, ⁇ 2 can also constitute oriented angles, ⁇ 1 being able to be considered as positive and a2 being able to be considered as negative.
  • tooth 81b and tooth 81a are separated by a first angle oriented ⁇ 1 around axis A8, and tooth 81c and tooth 81a are separated by a second angle oriented a2 around axis A8 , ⁇ 1 and a2 being different and of opposite signs.
  • I ⁇ 2I>I ⁇ 1I Preferably, I ⁇ 2I>1.5 ⁇ I ⁇ 1I, or even I ⁇ 2I>1.6 ⁇ I ⁇ 1I, or even I ⁇ 2I>1.7 ⁇ I ⁇ 1I.
  • tooth 81b adjoins tooth 81a at a distance of a first pitch p1 in a first direction s1
  • tooth 81c adjoins tooth 81a at a distance of a second pitch p2 in a second direction. s2.
  • the toothing 81 comprises pairs of teeth. Two teeth of the same pair are separated by a distance of a first pitch p1 and two teeth of two distinct pairs are separated by a distance of a second pitch p2.
  • each tooth 81i has the same tip radius r.
  • each tooth 81i is asymmetrical with respect to their plane P81i.
  • each tooth 81i comprises a first flank 812i and a second flank 813i which are different.
  • Such a tooth conformation makes it possible to optimize the geometries of each of the flanks with regard to their respective functions.
  • each tooth 81i of the toothing 81 comprises first flanks 812i which allow it on the one hand to be driven by the teeth 42i of the toothing 42 of the mobile 4, and on the other hand to lead, at least partially, the teeth of the toothing 72i of the cam 7.
  • the teeth 42i are each surrounded by two cutouts 42j, 42k and distributed over the curved profile 43.
  • the first flanks 812i also allow indexing in position of said cam 7, namely an angular blocking with less clearance of said cam 7.
  • the first flanks 812i are in particular shaped in order to optimize the driving of the pinion 8 under the effect of the drive of the mobile 4.
  • the geometry of the sidewalls 812i can be particularly optimized with regard to this aspect.
  • the toothing 81 comprises second flanks 813i which allow on the one hand to lead the teeth 72i of the toothing 72 of the cam 7, and on the other hand to allow its indexing in position opposite the mobile 4, namely its angular locking with less clearance vis-à-vis the mobile 4, in particular by cooperation with portions 43 of the mobile 4, in particular cylindrical portions 43 defining at least partially the outer periphery of the mobile 4.
  • the toothing 81 of the pinion 8 thus shaped, the month cam 7 can moreover have a toothing 72 comprising teeth 72i separated by slots 73i whose format is a consequence of the pitch p2 of the toothing 81.
  • the teeth 72i are each surrounded by two second cutouts 72j, 72k.
  • the sides 812i and 813i thus constitute drive and/or blocking means for the elements 4 and 7 arranged on the same level.
  • Such a conformation of toothing 81 thus makes it possible to propose a pinion formed on a single and same level, and therefore a fortiori to arrange the toothings 42 and 72 on a single and same level.
  • This has the particular advantage of achieving the implementation of a particularly thin calendar system 200 .
  • the flanks 812i and 813i can be optimized with regard to their respective functions.
  • the drives of the pinion 8 and/or of the cam 7 can be maximized while maintaining an adequate locking function with less play of the pinion 8 and/or of the cam 7, in particular by avoiding any risk of arcing. clash between these elements.
  • the toothing 81 comprises eight teeth.
  • the toothing 81 comprises four pairs of teeth, each of the pairs being separated by a pitch p2, and the teeth of each of the pairs being separated by a pitch p1.
  • the teeth of each of the pairs are here symmetrical with respect to a perpendicular plane P81 to plane P8 and passing through axis A8.
  • the toothing 81 has rotational symmetry of order 4 around the axis A8.
  • the pairs of teeth 81i define a rotational symmetry of order 4 around the axis A8.
  • the flanks 812i are mutually symmetrical relative to the plane P81.
  • the sides 813i are mutually symmetrical relative to the plane P81.
  • Such a pinion 8 makes it possible, for example, to drive the month cam 7 over seven angular pitches of the date mobile 4, in this case from the 26th of a given month to the 2nd of the following month.
  • THE figures 17 and 18 are detail views that illustrate elements 4, 7 and 8 of the calendar system respectively on the 26th and 27th of a month of February.
  • THE figures 7 to 12 illustrate the states of the calendar system from the 28th of February until the 2nd of March.
  • Actuating the 7 month cam before the 28th of a given month is particularly advantageous for the implementation of a semi-perpetual or perpetual calendar system. Indeed, such sequencing makes it possible to position the cam follower 6 so as to block the tooth 51 relative to the mobile of the dates 4 from the 28th of a month of February or from the 29th of a month of February in the event of Leap year.
  • the month 7 cam is always actuated before the 28th of a given month.
  • the month cam 7 is actuated from the transition from 26 to 27 of a given month.
  • THE figures 19 and 20 respectively illustrate the configuration of the cam 7 and the follower 6 on the 27th and 28th of a month of February.
  • the pin 61 of the follower 6 is in the groove 71 of the cam 7 at the level of a first radius R1 'centered on the axis A7, while on February 28, this same pin is in the groove 71 of the cam 7 at the level of a second radius R2' centered on the same axis, which positions the follower 6 of so as to block the tooth 51 relative to the mobile of the dates 4, and thus allows the movement of the mobile of the dates 4 over three additional steps under the effect of the finger 21, and therefore the passage of the date from February 28 to March 1.
  • the tooth 51 is activated on February 28 so as to allow the movement of the mobile of the dates 4 over three additional steps under the effect of the finger 21, and therefore the passage of the date from February 28 to March 1.
  • the tooth 51 is activated on the 30th of the given month so as to allow the movement of the date mobile 4 over an additional step under the effect of the finger 21.
  • the single action of the first drive finger 21 on the first tooth 51 causes, depending on the instant of activation of the first tooth 51 by the activation system 6, 7, a displacement of the date mobile 4 over one or more additional steps .
  • the tooth 51 can be activated on February 29 so as to allow the movement of the mobile of the dates 4 over two additional steps under the finger effect 21.
  • the angular displacement performed by the month cam 7, under the effect of the displacement over an angular pitch of the date wheel set 4, may differ from a change of date to another.
  • it may be envisaged not to drive the month cam when changing the date.
  • This is in particular the case of the embodiment of the system of calendar illustrated in the figures, with a cam of months 7 which is not moved when passing from the 28th to the 29th of a given month as visible on the figures 7, 8 .
  • the month cam 7 also has the specificity of being actuated after the first date of each month, preferably until the second date of each month, and this so as to suitably position any display supported by the cam of the months next to dial apertures.
  • toothing 81 can vary.
  • the toothing 81 of the pinion 8 can for example comprise 10 teeth, in particular 5 pairs of teeth.
  • the cam 7 can also be considered more generally as a mobile, so as to take into account the scenario in which the mobile 7 is more simply in the form of a month wheel.
  • the driven wheel set 7 is a month cam arranged so as to control the activation of the first drive tooth 51 of the leading wheel set constituting a date wheel set 4, the first tooth 51 being movably mounted on the date wheel set 4 between a deactivated or retracted position and an activated or training position.
  • the drive device 100 advantageously has the particularity of comprising first and second drive wheels 1, 2 connected kinematically to each other, which are provided respectively with a first finger and a second finger whose respective axes, in particular the respective axes of rotation, are separate and preferably fixed relative to a frame.
  • this drive device has the particularity of comprising, on the second mobile, the second finger provided to actuate a tooth mounted mobile on a mobile of the dates in order to allow at least one additional jump of the mobile of the dates at the end of a month of thirty days or less.
  • Such a calendar system has the advantage of being able to be implemented independently of any return or indexing spring, by means of a desmodromic activation system comprising a cam and a cam follower which govern the programming of an annual, semi-perpetual, or perpetual cycle.
  • the embodiment of the calendar system preferably has an instantaneous jump training device which is provided with two separate training mobiles.
  • an instantaneous jump training device which is provided with two separate training mobiles.
  • pitch means the angular difference between two stable (or indexed) positions immediately adjacent to a moving body.
  • pitch is meant an angle of 30°, namely an angle of 360°/12, 12 being the number of months over a year.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
EP21211473.0A 2021-11-30 2021-11-30 Kalendersystem für uhr Pending EP4187328A1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP21211473.0A EP4187328A1 (de) 2021-11-30 2021-11-30 Kalendersystem für uhr
JP2022187953A JP2023081323A (ja) 2021-11-30 2022-11-25 時計カレンダーシステム
US17/994,148 US20230168630A1 (en) 2021-11-30 2022-11-25 Timepiece calendar system
CN202211522537.5A CN116203817A (zh) 2021-11-30 2022-11-30 钟表日历***

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21211473.0A EP4187328A1 (de) 2021-11-30 2021-11-30 Kalendersystem für uhr

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EP4187328A1 true EP4187328A1 (de) 2023-05-31

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EP (1) EP4187328A1 (de)
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3716983A (en) * 1970-06-22 1973-02-20 Citizen Watch Co Ltd Calendar watch
CH680630GA3 (fr) 1991-04-17 1992-10-15 Nardin Ulysse Sa Pièce d'horlogerie à quantième perpétuel.
EP0987609A1 (de) 1998-09-14 2000-03-22 Frédéric Piguet S.A. Jährlicher Kalendermechanismus für Uhrwerk
CH710109A2 (fr) 2014-09-11 2016-03-15 Seiko Instr Inc Mécanisme de calendrier automatique, mouvement, et pièce d'horlogerie.
EP3173877A1 (de) * 2015-11-26 2017-05-31 Rolex Sa Kalendersystem für uhr
EP3483663A1 (de) 2017-11-02 2019-05-15 Rolex Sa Antriebsvorrichtung für kalendersystem einer uhr
EP3567438A1 (de) 2018-05-09 2019-11-13 Rolex Sa Kalendersystem für uhr

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3716983A (en) * 1970-06-22 1973-02-20 Citizen Watch Co Ltd Calendar watch
CH680630GA3 (fr) 1991-04-17 1992-10-15 Nardin Ulysse Sa Pièce d'horlogerie à quantième perpétuel.
EP0987609A1 (de) 1998-09-14 2000-03-22 Frédéric Piguet S.A. Jährlicher Kalendermechanismus für Uhrwerk
CH710109A2 (fr) 2014-09-11 2016-03-15 Seiko Instr Inc Mécanisme de calendrier automatique, mouvement, et pièce d'horlogerie.
EP3173877A1 (de) * 2015-11-26 2017-05-31 Rolex Sa Kalendersystem für uhr
EP3483663A1 (de) 2017-11-02 2019-05-15 Rolex Sa Antriebsvorrichtung für kalendersystem einer uhr
EP3567438A1 (de) 2018-05-09 2019-11-13 Rolex Sa Kalendersystem für uhr

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JP2023081323A (ja) 2023-06-09
US20230168630A1 (en) 2023-06-01

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