EP4312088A1 - Vorrichtung mit versenkbarem finger zum betätigen eines uhrwerkmechanismus - Google Patents

Vorrichtung mit versenkbarem finger zum betätigen eines uhrwerkmechanismus Download PDF

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Publication number
EP4312088A1
EP4312088A1 EP22186745.0A EP22186745A EP4312088A1 EP 4312088 A1 EP4312088 A1 EP 4312088A1 EP 22186745 A EP22186745 A EP 22186745A EP 4312088 A1 EP4312088 A1 EP 4312088A1
Authority
EP
European Patent Office
Prior art keywords
finger
cam
drive
module
actuation module
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
EP22186745.0A
Other languages
English (en)
French (fr)
Inventor
Didier VUILLEMIN
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.)
Patek Philippe SA Geneve
Original Assignee
Patek Philippe SA Geneve
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 Patek Philippe SA Geneve filed Critical Patek Philippe SA Geneve
Priority to EP22186745.0A priority Critical patent/EP4312088A1/de
Publication of EP4312088A1 publication Critical patent/EP4312088A1/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
    • G04B19/2534—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released continuously 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
    • G04B19/25353—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

Definitions

  • the present invention generally relates to a retractable finger device for operating a watch mechanism.
  • the retractable finger device is particularly suitable for reducing the jump time between two successive indications of temporal information from a display mechanism.
  • the display mechanism may in particular include indications relating to the 31 days of the month, the seven days of the week or even the months of the year.
  • the mechanisms used to jump an indication conventionally involve a finger fixed on a 24-hour wheel which makes one revolution in 24 hours.
  • This finger is arranged to rotate a star attached to a disk containing the indications to be displayed successively.
  • the star cooperates with a positioning jumper, which ensures a precise angular position of the star after each jump.
  • This solution is simple but has the disadvantage of generating a slow jump time since the transition from the display of one indication to the display of the next indication is dependent on the rotation speed of the 24-hour wheel. Although the change, for example, of the date is done at night, reading it at a late hour is not optimal.
  • An aim of the present invention is therefore to propose an actuating device for actuating a watch mechanism and which is free from the aforementioned drawbacks.
  • an aim of the present invention is to propose an actuation device comprising a finger arranged to be driven at a rotation speed greater than the usual rotation speed for the actuation of a watch mechanism in order to reduce the time jump significantly.
  • Another aim of the present invention is to propose a device for actuating a watch mechanism whose energy required for actuation of the mechanism is significantly reduced compared to known instantaneous jump mechanisms.
  • a retractable finger device for a watch movement comprising a module for actuating a watch mechanism, in particular a display mechanism with several time indications, and a training module arranged to drive the actuation module so that it can perform a succession of 360° rotation cycles.
  • the actuation module comprises a finger, a finger support on which the finger is mounted, a finger cam arranged to cooperate with the finger, a first drive member secured to the finger support and a second drive member secured of the finger cam.
  • the drive module comprises a first transmission member arranged to drive the first drive member and a second transmission member arranged to drive the second drive member so as to induce a relative movement between the finger support and the finger cam in order to be able to bring the finger from an extended configuration to a retracted configuration and vice versa.
  • the finger is arranged, on the one hand, to be able to activate the watch mechanism when the finger passes through it in the deployed configuration and, on the other hand, to be released from the watch mechanism when the finger passes through it in the retracted configuration, so as not to activate the watch mechanism at each rotation cycle of the actuation module.
  • the device further comprises a pivot and a return member which are integral with the finger support.
  • Finger is pivotally mounted on the pivot.
  • the return member is arranged to force the finger against the finger cam so that the finger can pass from the retracted configuration to the deployed configuration, under the action of the finger cam, and from the deployed configuration to the retracted configuration under the action of the return member.
  • the return element is in the form of a leaf spring 26 which extends along a curved path around the finger cam 28.
  • the finger cam is mounted coaxially with the axis of rotation of the finger support.
  • the profile of the finger cam comprises a first and a second sector.
  • the first and second sectors are distanced from the center of the cam by a first and a second distance respectively.
  • the second distance is greater than the first distance in order to bring the finger into the deployed and retracted configurations respectively.
  • the profile of the finger cam comprises a circular sector, a vertex, a transition sector between the end of the circular sector and the vertex as well as a clear cut between the vertex and the start of the circular sector of drug.
  • the finger is in the deployed configuration when it is in contact with the top of the cam and in the retracted configuration when it is in contact with the circular sector of the cam.
  • the actuation module further comprises a cylindrical element, for example a tube or a rod.
  • the finger cam and the second drive member are integral with the cylindrical element and are also arranged on either side of the assembly comprising the finger support and the first drive member. The latter is pivotally mounted around the cylindrical element to allow relative movement between the finger support and the finger cam.
  • the actuation module and the drive module are adapted so that the rotation speed of the finger support driving the finger is at least twice as great as the rotation speed of the cam of finger.
  • the rotation speed of the finger support is preferably at least four times greater, or even eight times greater, than that of the finger cam in order to further reduce the jumping time.
  • the first and second drive members of the actuation module are arranged coaxially.
  • the first and second drive members of the actuation module are respectively a driven wheel and a Maltese cross.
  • the first transmission member of the drive module is a driving wheel engaged with the driven wheel of the actuation module.
  • the second transmission member of the drive module comprises a plate secured in rotation to the driving wheel and at least one pin secured to the plate and arranged to cooperate with the Maltese cross of the actuation module in order to impart a jerky rotation to the finger cam.
  • the second transmission member further comprises a blocker secured to the plate in order to stabilize the position of the finger cam when the pin is released from the Malt cross.
  • Another aspect of the invention relates to a watch mechanism, in particular a mechanism for displaying the date, the days of the week, or even the months of the year, comprising the retractable finger device as well as a part clockwork comprising the watch mechanism.
  • the retractable finger device 10 comprises an actuation module 20 and a drive module 40 arranged to drive the actuation module 20 so that it can perform a succession of 360° rotation cycles.
  • the actuation module is intended to trigger or activate a watch mechanism, for example a star 70 with 31 teeth for displaying the date as illustrated in Figure 5 .
  • the actuation module 20 comprises a finger 22, a finger support 30, for example in the form of a plate, on which the finger 22 is mounted, a finger cam 28 mounted coaxially with the axis of rotation of the finger support 30 and which is arranged to cooperate with the finger 22, a first drive member 32 secured to the plate 30 and a second drive member 34 secured to the finger cam 28.
  • the first drive member is for example a wheel 32.
  • the plate 30 and the wheel 32 are fixed together so that the plate 30 can be driven in unison with wheel 32.
  • the finger cam 28 and the second drive member 34 are mounted on either side of the assembly comprising the plate 30 and the wheel 32.
  • the actuation module 20 comprises a tube 36. end of the tube 36 is secured to the finger cam 28 while the other end of the tube is secured to the second drive member 34.
  • the wheel 32 is pivotally mounted around the tube 36 in order to be able to induce a relative movement between the finger cam 28 and the plate 30 supporting the finger 22.
  • the finger 22 is pivotally mounted around a pivot 24, for example a pin, secured to the plate 30.
  • the finger 22 comprises a distal part 22a intended to actuate the watch mechanism, and an actuable part 22b arranged to cooperate with a member return member 26 intended to hold the finger 22 against the finger cam 28.
  • This return member may in particular be in the form of a blade spring 26 comprising a fixing part 27 fixed on the plate 30 by fixing pins 27a by example, and a distal part acting on the actuable part 22b of the finger 22 it being specified that the distal and actuable parts of the finger are arranged on either side of the pivot 24.
  • the spring blade 26 extends along of a curved trajectory around the finger cam 28 over at least 90°.
  • the finger cam 28 comprises a circular sector 28a, a vertex 28c, a transition sector 28b extending from the end of the circular sector 28a to the vertex 28c of the cam, and a sharp break 28b extending for example in a radial direction from the top 28c of the cam to the start of the circular sector 28a.
  • the finger 22 is in a retracted configuration when it moves along and against the circular sector 28a of the cam.
  • the finger 22 is arranged to begin to pivot around the pivot 24 when it cooperates with the start of the transition sector 28b and continues to pivot as it progresses along this transition sector in order to reach its configuration deployed when it cooperates with the top 28c of the cam 28.
  • the spring blade 26 pivots the finger in an opposite direction in order to bring it back into its retracted configuration against the circular sector 28a of cam 28.
  • the drive module 40 of the retractable finger device 10 comprises a first transmission member 50 in engagement or arranged to cooperate with the first drive member 32 of the actuation module 20 as well as a second transmission member in engagement or arranged to cooperate with the second drive member 34 of the actuation module 20.
  • the finger cam 28 is arranged to be moved by a jerky rotation thanks to a Maltese cross drive.
  • the second drive member of the actuation module 20 is a Maltese cross 34 secured to the tube 36 and comprising four grooves.
  • the second transmission member of the drive module 40 comprises a plate 66 and two pins 64a, 64b fixed on the plate 66 in a diametrically opposite manner and in the vicinity of the periphery thereof.
  • the training module 40 further comprises a blocker 62 secured to the plate 66 and having a shape complementary to the Maltese cross 34 in order to stabilize the angular position thereof when one and the other of the two pins 64a, 64b are not engaged in a groove of the Maltese cross.
  • the first transmission member of the drive module 40 is a wheel 50 engaged with the wheel 32 of the actuation module 20.
  • the wheel 50 is integral in rotation with the plate 66 of the Maltese cross drive.
  • the wheel 50 is engaged with a driving wheel 80 of a watch movement.
  • This driving wheel has 48 teeth and is designed to be driven by the movement at the rate of one revolution in 24 hours.
  • the wheel 50 of the drive module 40, engaged with the driving wheel 80 has 24 teeth to be driven at the rate of two revolutions in 24 hours.
  • the wheel 32 of the actuation module 20 has 12 teeth to be driven four revolutions in 24 hours. This speed thus corresponds to the speed of the plate 30 supporting the finger 22 and consequently to the speed of rotation thereof.
  • the finger cam 28 is driven at the rate of a quarter turn in 24 hours.
  • the speed of rotation of the finger 22 around the finger cam 28 is therefore four times greater than the speed of rotation of the latter in this example.
  • the gear ratios can vary in order to modify the relative speed between the finger 22 and the finger cam 28.
  • the frequency of rotation of the driving wheel 80 can also be increased by adapting the gear train of the movement in contact with it. This makes it possible to further reduce the jump time when the watch mechanism is actuated by the actuation module.
  • the finger 22 is forced by the leaf spring 26 against the circular sector 28a of the cam 28 in a retracted configuration.
  • the top 28c of the cam is located approximately at 12 o'clock.
  • the star 70 is held in a stable angular position by a jumper 72 cooperating with a spring 74.
  • the finger 22 is progressively driven by the plate 30, in engagement with the driving wheel 50, in order to be brought into its deployed configuration where it is in contact with the top 28c of the cam as illustrated in the figure 6b .
  • the finger 22 has pivoted around the cam 38 by approximately a third of a turn while the plate 66 supporting the pins 64a, 64b has completed approximately a sixth of a turn without the one of the pins on the plate activates the Maltese cross.
  • the finger 22 continues to rotate around the cam 28.
  • the spring blade 26 again forces the finger 22 against the circular part 28a of the cam 28 as soon as it is released from the top 28c of the cam so that it is brought back again in its retracted configuration as shown in figure 6c .
  • the distal part 22a of the finger 22 is thus clear of the teeth 71 of the star 70. The latter is therefore not actuated by the distal part 22a of the finger when it passes opposite the teeth 71 of the star.
  • the finger 22 was driven by the plate 30 by approximately two thirds of an additional turn relative to the figure 6c while, in the meantime, the Maltese cross has been actuated by one of the pins 64a, 64b of the plate 66 by a quarter turn counterclockwise. This makes it possible to pivot the cam 68 by a quarter turn counterclockwise so that its top 28c now points opposite the axis of rotation of the star 70.
  • the finger 22 continues its progression around the cam in order to 'be brought into its deployed configuration according to the figures 7b and 7c , in which it is in contact with the top 28c of the cam.
  • the distal part 22a of the finger 22 can thus come into contact with a tooth 71 of the star 50 so that the latter makes a jump caused by the rotation of the finger as illustrated by the figures 7d and 7e .
  • the finger 22 will then rotate around the cam 28 in order to carry out a succession of three rotation cycles of 360° in its retracted configuration since depending on the gear ratios between the actuation module and the drive module, it
  • the plate 30 supporting the finger 22 must make four additional turns so that the finger 22 is actuated again by the cam 28 in its deployed configuration since the latter pivots a quarter turn in 24 hours.
  • the invention is not limited to the embodiment which has just been written but that it embraces different variants of execution.
  • the actuation module of the retractable finger device can be adapted so that the finger can be actuated not in rotation but in translation.
  • the return member is adapted to exert a force in a rectilinear direction tending to return the finger to its retracted configuration.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
EP22186745.0A 2022-07-25 2022-07-25 Vorrichtung mit versenkbarem finger zum betätigen eines uhrwerkmechanismus Pending EP4312088A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22186745.0A EP4312088A1 (de) 2022-07-25 2022-07-25 Vorrichtung mit versenkbarem finger zum betätigen eines uhrwerkmechanismus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22186745.0A EP4312088A1 (de) 2022-07-25 2022-07-25 Vorrichtung mit versenkbarem finger zum betätigen eines uhrwerkmechanismus

Publications (1)

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EP4312088A1 true EP4312088A1 (de) 2024-01-31

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EP22186745.0A Pending EP4312088A1 (de) 2022-07-25 2022-07-25 Vorrichtung mit versenkbarem finger zum betätigen eines uhrwerkmechanismus

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH82655A (fr) * 1917-01-15 1919-11-01 Charles Menard Hubert Dispositif pour transformer un mouvement de rotation continu et uniforme en un mouvement de rotation intermittent
CH704081A2 (fr) * 2010-11-03 2012-05-15 Patek Philippe Sa Geneve Procédé et mécanisme d'affichage des numéros de la semaine dans l'année.
DE102018106373A1 (de) * 2018-03-19 2018-05-03 NOMOS Glashütte/SA Roland Schwertner KG Uhr mit Datumsanzeige

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH82655A (fr) * 1917-01-15 1919-11-01 Charles Menard Hubert Dispositif pour transformer un mouvement de rotation continu et uniforme en un mouvement de rotation intermittent
CH704081A2 (fr) * 2010-11-03 2012-05-15 Patek Philippe Sa Geneve Procédé et mécanisme d'affichage des numéros de la semaine dans l'année.
DE102018106373A1 (de) * 2018-03-19 2018-05-03 NOMOS Glashütte/SA Roland Schwertner KG Uhr mit Datumsanzeige

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