EP3992731A1 - Manuell bedienbarer steuermechanismus für uhr - Google Patents

Manuell bedienbarer steuermechanismus für uhr Download PDF

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Publication number
EP3992731A1
EP3992731A1 EP20205322.9A EP20205322A EP3992731A1 EP 3992731 A1 EP3992731 A1 EP 3992731A1 EP 20205322 A EP20205322 A EP 20205322A EP 3992731 A1 EP3992731 A1 EP 3992731A1
Authority
EP
European Patent Office
Prior art keywords
rocker
arm
control mechanism
star
timepiece
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
EP20205322.9A
Other languages
English (en)
French (fr)
Inventor
Samuel Tanner
Salvatore Palermo
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 EP20205322.9A priority Critical patent/EP3992731A1/de
Publication of EP3992731A1 publication Critical patent/EP3992731A1/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
    • G04B19/25—Devices for setting the date indicators manually

Definitions

  • the present invention relates to a control mechanism for a timepiece comprising a member that can be operated manually from outside the timepiece, a rocker mounted to pivot between a rest position and a tilted position, and a spring arranged to return the rocker in the rest position, the rocker comprising a first arm arranged to cooperate with the manually operable member so as to allow the rocker to be brought into the tilted position when the member is actuated and comprising a second arm the end of which is arranged to come directly or indirectly into engagement with the toothing of a star wheel or a disc so as to allow it to be driven by actuating the control mechanism.
  • Such mechanisms are known. They are most generally used as correctors making it possible to advance certain indicator members step by step in timepieces.
  • One thinks in particular of calendar watches whose date, day of the week or even month indicators are very often either hands carried by stars, or discs.
  • a calendar watch can for example be equipped with correctors making it possible to correct certain indicators individually without modifying the other time information displayed.
  • the possibility of updating the indicators of a timepiece independently of each other can prove to be useful in particular when restarting a timepiece after several days of stoppage.
  • the date indicators are incremented by the movement at regular intervals.
  • the incrementation of the various indicators is often ensured by fingers which are each carried by a drive wheel and arranged to actuate the toothing of a star or of a disc at each turn of the driving wheel.
  • date changes take place at midnight, and that it is therefore when the hands of a calendar watch are around midnight that the indicators are incremented by the calendar mechanism. This is the reason why the wearer of a calendar watch should absolutely not try to correct the indications of the calendar at this late hour.
  • a calendar indicator which is carried by a star or a disc does not have the possibility of moving freely during the periods when the driving finger intersects the trajectory of the teeth of the star or the disc which it must drive. . It will thus be understood that, if, wishing to correct an indicator, a user decides to actuate the corresponding control mechanism during one of these periods, the antagonistic forces exerted by the driving finger and the manually actuable member risk causing the rupture of part of the mechanism.
  • An object of the present invention is to remedy the drawbacks of the prior art which have just been explained.
  • the present invention achieves this object as well than others by providing a timepiece operating mechanism which is in accordance with appended claim 1.
  • the second arm is elastically flexible enough to allow the rocker to come into the tilted position when the mechanism is actuated, even if the end of the second arm is retained because the rotation of the star or of the disc is otherwise blocked. Thanks to this characteristic, a possible blocking of the star or of the disk does not prevent the first arm of the rocker from pivoting to the rockered position. It will also be understood that a blocking of the star or of the disc does not have any influence on the stroke of the manually operable member either. In other words, the same gesture performed by a user will drag the star or the disk by one step, when it is free to rotate, and will simply not drag it if it is blocked. Thanks to this characteristic, the force exerted by a user on the control mechanism does not risk causing the breakage of a part.
  • the schematic plan views of the appended figures show a control mechanism according to an exemplary embodiment.
  • the control mechanism represented comprises a control member that can be operated manually from outside the timepiece (symbolized by an arrow referenced 1), a rocker (generally referenced 3), and a return spring (referenced 9).
  • the figures also show a star (referenced 11) which has seven teeth.
  • the star could carry a member indicating the days of the week (not shown).
  • the position of the star 11 is indexed by a jumper (referenced 13) which is biased against the toothing of the star by a jumper spring (referenced 15).
  • the figures also show a drive wheel (referenced 17) forming part of a gear train (not shown) which is driven by a motor mechanism (not shown) of the timepiece.
  • the gear train is arranged to rotate the drive wheel 17 at the speed of one revolution in 24 hours (clockwise in the drawings).
  • drive wheel 17 carries a drive finger (referenced 19) which is arranged to cause star wheel 11 to pivot by the angular value of one tooth on each pass.
  • Rocker 3 is pivotally mounted about an axis (reference 21), and it comprises two arms which extend diverging from the pivot axis.
  • the first arm (referenced 5) is the thickest arm.
  • it comprises a proximal part which is oriented substantially radially with respect to the pivot axis 21 of the rocker, and a distal part (referenced 25) which is pierced with an oblong opening (referenced 27) oriented tangentially with respect to the pivot axis 21.
  • the second arm (reference 7), meanwhile, is thinner and ends in a beak (reference 23).
  • the beak forms a bend of about 90° at the end of the second arm.
  • the head of a screw protrudes of the oblong opening 27 made in the distal part 25 of the first arm.
  • the oblong shape of the opening 27 gives the screw 29 the possibility of sliding inside the opening when the rocker 3 pivots around the axis 21, and on the other hand that the angular position of the rocker is always between a first extreme position in which the screw 29 abuts against one of the ends of the opening 27, and a second extreme position in which the screw abuts against the other end of the opening .
  • the distal part 25 of the first arm 5 also carries a pin (not referenced) against which the end of the return spring 9 rests.
  • Spring 9 is arranged to return rocker 3 to its first extreme position, called the rest position. It may be noted that, in the drawings, the direction in which the spring 9 recalls the rocker 3 corresponds to the counterclockwise direction.
  • FIGS. 1A, 1B and 1C illustrate three successive stages in the normal operation of the control mechanism which is the subject of the present description.
  • rocker 3 is in the rest position, while star 11 is indexed by jumper 13 which is lowered between two consecutive teeth of the star.
  • the control mechanism is being actuated, and it can be seen that the rocker 3 is in an intermediate position in which the star 11 has been driven just enough so that one of its teeth has raised the jumper 13 It can be seen that at the moment represented, the jumper is balanced on the tip of the tooth.
  • rocker 3 is in its second extreme position, called rocked position, whereas star wheel 11 has now advanced by the angular value of one tooth and jumper 13 is again lowered between two consecutive teeth.
  • FIG. 2A illustrates by way of example such a deadlock situation.
  • a tooth of the star 11 came to buttress against the end of the finger 19, so that the star is blocked before it can advance a full step counterclockwise. It can be seen that any rotation of Star 11 counter-clockwise is now impossible.
  • the star 11 retains the beak 23 and therefore also the end of the second arm of the rocker 3.
  • rocker 3 is not rigid since its second arm 7 is elastically flexible enough to allow the first arm 5 to come into the completely tilted position when the mechanism is activated, even if the spout 23 is retained because the star 11 is locked in rotation.
  • the second arm 7 of the rocker can for example be essentially constituted by a leaf spring which connects the pivot axis 21 to the beak 23.
  • the control mechanism is illustrated with the star 11 blocked by the drive finger 19 in a configuration identical to that of the figure 2A . Beak 23 has not moved either. However, the figure 2B shows the first arm 5 of the rocker 3 has pivoted clockwise to its second extreme position, called the tilted position.
  • the screw 29 is in abutment against the corresponding end of the opening 27. It will be understood that it is the flexibility of the second arm 7 of the rocker which makes this configuration possible. We can indeed see that, in the figure 2B , the second arm 7 is curved while it is straight in the figure 2A . Thus, in accordance with the invention, when the actuation of the control mechanism does not allow the star wheel 11 to be driven by one step because the latter is blocked, the second arm 7 of the rocker has the possibility of flexing for allow the first arm 5 to come into the tilted position as if the mechanism had operated normally.
  • the length of the stroke traveled by the first arm 5 of the rocker 3 is the same in the event of blocking as in normal operation, and that the same applies to the length of the stroke of the actuable member manually.
  • the feeling of the user who actuates the control mechanism can thus also be the same.
  • the second arm 7 must not be too flexible. Indeed, the second arm 7 of rocker 3 must have sufficient stiffness to allow it to push one of the teeth of the toothing of star 11 with sufficient force to overcome the holding torque generated by the pressure of the jumper 13 on the star teeth. It will be understood that the second arm of the rocker of a control mechanism according to the invention always fulfills this condition, provided that jumper spring 15 is not chosen too strong.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
EP20205322.9A 2020-11-03 2020-11-03 Manuell bedienbarer steuermechanismus für uhr Pending EP3992731A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20205322.9A EP3992731A1 (de) 2020-11-03 2020-11-03 Manuell bedienbarer steuermechanismus für uhr

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20205322.9A EP3992731A1 (de) 2020-11-03 2020-11-03 Manuell bedienbarer steuermechanismus für uhr

Publications (1)

Publication Number Publication Date
EP3992731A1 true EP3992731A1 (de) 2022-05-04

Family

ID=73059486

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20205322.9A Pending EP3992731A1 (de) 2020-11-03 2020-11-03 Manuell bedienbarer steuermechanismus für uhr

Country Status (1)

Country Link
EP (1) EP3992731A1 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2790069A2 (de) * 2013-04-11 2014-10-15 Patek Philippe SA Genève Uhr mit Weltzeitanzeige
CH714372A2 (fr) * 2017-11-27 2019-05-31 Montres Breguet Sa Mécanisme de correction d'une fonction d'un mouvement d'une pièce d'horlogerie.
EP3705951A1 (de) * 2019-03-07 2020-09-09 Patek Philippe SA Genève Mechanismus zur anzeige der wochennummer fur einen uhrzeug

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2790069A2 (de) * 2013-04-11 2014-10-15 Patek Philippe SA Genève Uhr mit Weltzeitanzeige
CH714372A2 (fr) * 2017-11-27 2019-05-31 Montres Breguet Sa Mécanisme de correction d'une fonction d'un mouvement d'une pièce d'horlogerie.
EP3705951A1 (de) * 2019-03-07 2020-09-09 Patek Philippe SA Genève Mechanismus zur anzeige der wochennummer fur einen uhrzeug

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