EP3701336B1 - Korrekturvorrichtung für eine uhr - Google Patents

Korrekturvorrichtung für eine uhr Download PDF

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Publication number
EP3701336B1
EP3701336B1 EP18789074.4A EP18789074A EP3701336B1 EP 3701336 B1 EP3701336 B1 EP 3701336B1 EP 18789074 A EP18789074 A EP 18789074A EP 3701336 B1 EP3701336 B1 EP 3701336B1
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EP
European Patent Office
Prior art keywords
input
correction
output
correction device
rotation
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Active
Application number
EP18789074.4A
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English (en)
French (fr)
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EP3701336A1 (de
Inventor
Samuel VUILLEMEZ
Séverin DONZE
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Richemont International SA
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Richemont International SA
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Publication of EP3701336A1 publication Critical patent/EP3701336A1/de
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    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • 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
    • 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
    • G04B27/00—Mechanical devices for setting the time indicating means
    • G04B27/001—Internal gear therefor, e.g. for setting the second hand or for setting several clockworks

Definitions

  • the present invention relates to the field of watchmaking. It relates more particularly to a correction device for a timepiece.
  • timepieces comprising not only a display of the current time but also a device for displaying other information such as the date, the day of the week, the month, the year or the like
  • a device correction is necessary to allow the user to adjust the information displayed by this device.
  • This adjustment can be carried out by means of the time-setting rod, by a dedicated rod, by other dedicated means such as one or more pushers or the like.
  • Some of these correction devices can adversely affect the movement, for example by applying a torque which can damage the movement if the manual correction is done around midnight, while the drives of the display devices are running. produce.
  • the document FR2541005 proposes to link the movement to a date display device by means of a differential gear which is part of the correction device.
  • the first input of this differential is driven by the movement, the second input is driven by an external maneuvering member, such as a time-setting rod, and the output in turn drives the display of the date.
  • an external maneuvering member such as a time-setting rod
  • the synchronization of the display of each of this information is essential so that the device displays the information correctly and also for the indications to advance at the right time.
  • the aim of the invention is therefore to provide a timepiece in which the aforementioned defects are at least partially overcome.
  • the invention relates to a correction device for a timepiece, which comprises a differential gear having a first input, a second input and an output.
  • the first input of said differential is arranged to be driven by a watch movement, for example by being driven directly by the movement, at the rate of one revolution in 12 hours.
  • the second input is in kinematic connection with a correction gear extending from a control member and comprising a clutch making it possible to establish and interrupt the kinematic connection between said control member and said second input.
  • the output is arranged to drive a display device for the watch movement, and the angular position of the output is defined as a function of the angular position of said first input as well as that of said second input, each of the inputs thus providing a contribution. to the angular position of the outlet.
  • said correction device further comprises a memory cam in desmodromic connection with the second input.
  • This memory cam is subjected to a return force supplied by an elastic member, such as a spring, tending to maintain the memory cam in at least one predetermined angular position when the kinematic connection between the control member and the second entry is interrupted, i.e. when no correction is made.
  • an elastic member such as a spring
  • the correction device is arranged, in particular at the level of the gear ratios concerned, to ensure that the incidence of the rotation of the second input during a correction, on the angular position of the output is canceled when the memory cam is in said at least one predetermined angular position.
  • the predetermined angular position of the memory cam returns the second input to a "neutral" position when the kinematic connection between the control member and the second input is interrupted.
  • the angular position of the second input contributes to define in any way the angular position of the output, adding to or deducing from the angular position defined by the first input.
  • the output is out of sync and out of sync with the first input.
  • the memory cam is linked desmodromic with the second input, it is designed to “store” the angular deviation corresponding to this offset.
  • the figure 1 illustrates an embodiment of a correction device 1 according to the invention, given by way of non-limiting example.
  • This correction device 1 is intended to correct the information displayed by any display device, such as an annual calendar mechanism, but can also be applied to a simple, perpetual or similar calendar. This correction can advantageously be carried out in both directions.
  • the device 1 comprises a differential gear 3, certain details of which are better visible in the figures 4 and 5 .
  • the differential gear 3 has a first input 5 intended to be driven by a watch movement.
  • the device can be arranged on a module intended to be driven by a basic movement (not shown), but the application to an integrated construction is also possible.
  • the movement is intended to drive the first input 5 at an ad hoc angular speed (typically one revolution in 12 hours), and takes the form of a toothed wheel rotatably attached to a sun gear 7 located at the geometric center of the differential 3
  • the first input 5 can be driven by any kind of drive system, such as for example meshing with the hour wheel of the movement.
  • the first input is integral in rotation with the hour wheel of the movement and is driven at the rate of one revolution in 12 hours.
  • other training speeds are possible.
  • the differential 3 further comprises a second input 9, which is a planet carrier provided with an external toothing and on which a plurality of planet gears 17 are pivoted.
  • the latter mesh with the sun gear 7.
  • the external teeth of this planet carrier meshes with a correction gear 11 which is in a disengageable kinematic connection with a correction member 19, in the form of a correction rod 19.
  • This rod 19 can also act as a winding stem.
  • the correction member can take other forms, such as a rotating bezel or a rotating bottom.
  • a person skilled in the art could also arrange two rapid correction pushers, one for advancing and the other for retreating the planet carrier, by coordinating the engagement and disengagement of the correction chain.
  • the output 13 of the differential gear comprises two toothed plates 13a, 13b each having 24 teeth and superimposed with respect to one another and mutually integral in rotation, for example by means of a key-groove system c .
  • These boards 13a, 13b are integral in rotation with a ring 15 provided with an internal toothing which meshes with the planet gears 17.
  • the number of boards and planet gears as well as their arrangement in an epicyclic train system in the plane ( “flat” planetary differential) or in space (“spherical” planetary differential) can be chosen according to the needs of the manufacturer.
  • other constructions of differential gears are within the abilities of those skilled in the art, and that described here is in no way limiting.
  • the correction gear 11 and therefore the second input 9 remain blocked at rest as described below.
  • the output 13 is therefore driven exclusively as a function of the rotation of the first input 5, via the sun gear 7 and the satellites 17.
  • the direction of rotation of the output 13 is thus the reverse of that of the first input. 5, and it is subjected to a reduction in angular speed, due to the gear ratio of the differential.
  • the first input 5 rotates in 12 hours and its gear ratio with the output 13 is 0.5. Consequently, the latter performs one revolution in 24 hours, as is appropriate for the training of a date device.
  • the upper board 13a carries a drive tooth 37 which is longer than the other teeth of said board.
  • the lower board 13b also carries longer drive teeth as is generally known in the context of the training of annual or perpetual calendar devices, to perform end-of-month training of less than 31 days and / or for operate another display device. Other rotational speeds are of course possible depending on the construction of the display device and of the differential gear 3.
  • the first input 5 remains (almost) motionless, under the action of the movement and the escapement, and the second input 9 pivots following a rotation of the correction rod 19 which is transmitted by the 'intermediary of the correction gear 11.
  • the rotation of the second input 9 is transmitted subsequently to the output 13 by the rotation of the satellites 17 around the center of the differential, as well as by the rolling of the latter on the sun gear 7 which remains (almost) motionless.
  • the directions of rotation of the second input 9 as well as of the output 13 are thus the same, but the speed of rotation of the output is lower than that of the second input, at a ratio of 2/3 in the mode. realization illustrated.
  • the correction gear does not exert any influence on the basic movement during a correction
  • the rotation of the output 13 is a function of each of the two inputs 5, 9.
  • output 13 drives the display device one step for each revolution it takes. It will be noted that it is also possible to provide several correction steps by complete rotation of the output 13, depending on the construction of the display device and the boards 13a, 13b. For example, every third or quarter (or other division) of a turn of the output could cause the display device to take one correction step, as appropriate.
  • the device 1 comprises means which make it possible to return the outlet 13 substantially to its initial angular orientation, prior to the correction, once the correction has been completed.
  • the correction gear 11 comprises on the one hand a clutch 21 making it possible to establish and interrupt the kinematic connection between the correction rod 19 and the second input 9 according to the axial position of the rod 19 and, d 'on the other hand a memory cam 23.
  • the clutch 21 can be of any type, such as sliding pinion and pull-tab, rocker, horizontal clutch, one-way snap or similar, for example as illustrated in the document CH1016 .
  • the clutch comprises a sliding pinion 25 actuated by a non-illustrated pull tab. The axial position of the sliding pinion 25 determines whether the latter is rotatably linked to the rod 19 or not.
  • Other means for controlling the clutch 21 are within the abilities of those skilled in the art.
  • the memory cam 23 is integral in rotation with a wheel 27 which is in desmodromic connection with the second input 9.
  • the wheel 27 meshes with a mobile 29 forming part of the kinematic chain linking the clutch. 25 to the second input 9.
  • the memory cam 23 can be arranged integral in rotation with an element of this kinematic chain or be integrated into the second input 9 of the differential gear 3.
  • the memory cam 23 can be linked with said second input 9 by means of its own dedicated cog.
  • the shape of the memory cam 23 was chosen to optimize the torque available after correction. In most cases, a correction will be made in the direction of advancing the indications supplied by the display device following the stopping of the part for a certain time. Corrections in the other direction are rarer, and therefore the memory cam 23 may have an asymmetric shape arranged to provide more torque in one direction of rotation than in the other. However, it is quite possible to use a cam which is symmetrical or which has another suitable shape.
  • the clutch 21 is disengaged and the memory cam 23 is positioned by a return force supplied by a spring 31, the position of which is controlled by the axial position of the rod 19.
  • the spring 31 is positioned so as to exert sufficient force on the memory cam 23 so that it blocks the correction gear 11 against any parasitic torques emanating from the rotation of the first input 5 and of the output 13.
  • the second inlet 9 is also blocked in a predetermined angular position of such so that the output 13 remains synchronized with the first input 5.
  • the spring 31 is mounted on the rod 19, but other constructions are within the abilities of those skilled in the art. It is also possible that the spring 31 is mounted on a frame element independently of the control member 19.
  • the axial displacement of the rod 19 raises the spring 31 so that the latter exerts less pressure on the memory cam 23, in order to facilitate a correction operation.
  • the output 13 of the differential 3 is pivoted as a function of the rotations of the rod 19 and the display device that it controls can be corrected.
  • the memory cam 23 is also rotated.
  • the memory cam 23 is heart-shaped having a single lobe, and its gear ratio with the second input 9 is chosen such that the memory cam 23 rotates at the rate of one lobe. full turn by rotation of the output 13 under the control of the angular displacements of the second input 9.
  • the gear ratio between the second input 9 and the output 13 is 2/3 (which implies that 1, 5 turns of the second input 9 drives the output 13 at the rate of one turn)
  • that between the second input 9 and the memory cam 23 is 1.5.
  • the memory cam 23 may have several lobes and rotate at the rate of, for example, one third or one quarter of a turn per complete rotation of the output 13, depending on the number of lobes.
  • the second inlet 9 will have several angular orientations for which its contribution to the angular position of the outlet 13 is zero, these positions being separated from each other by more than 360 °.
  • Such a unique angular orientation occurs exclusively in the case of a 1: 1 gear ratio between the second input 9 and the output.
  • the person skilled in the art knows how to calculate by the Willis formula the gear ratios necessary in order to ensure that the positioning of the memory cam 23 by the return force cancels out the effect of the second input 9 and thus re-establishes the synchronization between the first input 5 and the output 13.
  • the memory cam 23 “stores” the contribution to the angular position of the output 13 supplied by the second input 9.
  • the output 13 thus returns to the angular position that it would have had in the absence of a correction, and its angular position is again only defined by the first input 5.
  • the output 13 does not perform only full revolutions after addition or subtraction performed under the control of the memory cam, notwithstanding any impact of the first entry during correction. In the context of a perpetual calendar, this causes the date to jump around midnight even after a correction.
  • the figures 2 and 3 illustrate the correction device 1 of the invention in combination with kinematically adjacent components of an annual calendar device, in order to better illustrate the meaning of the functionality of said correction device 1.
  • the annual calendar device comprises a programming wheel 33 which comprises a date plate 35 having 31 teeth as well as a correction plate 39 coaxial with the date plate 35.
  • the latter is designed to be driven at the rate of one step. per 24 hours via the actuating tooth 37 which extends from the board toothed 13a of the outlet.
  • the toothed board 13b includes several longer teeth which interact with a corresponding tooth of the correction board 39 in order to advance the programming wheel at an additional pitch at the end of the months having thirty days.
  • the various boards each have a suitable number of teeth, depending on the number of days of the month.
  • the correction plate 39 as well as the plate 13b can be omitted.
  • a display mechanism for the days of the week as well as the moon phases 41 which is driven by the intermediary of the lower board 13b of the outlet 13, and which does not have to be described. more in detail.
  • the correction device can directly or indirectly drive a display member, for example of a simple date, the construction of the output 13 being adapted accordingly.
  • the output could simply carry a single finger for the direct or indirect drive of a date crown.
  • the differential gear it is not mandatory that its output 13 directly carry a board 13a, 13b or a similar element which interacts directly with a programming wheel 33, a date wheel set or a device. display.
  • the output 13 can be a toothed wheel which in turn drives an intermediate mobile which directly or indirectly drives such an element.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Transmission Devices (AREA)

Claims (11)

  1. Korrekturvorrichtung (1) für eine Uhr, die Korrekturvorrichtung (1) umfassend ein Differentialgetriebe (3), das einen ersten Eingang (5), einen zweiten Eingang (9) sowie einen Ausgang (13) umfasst, wobei:
    - der erste Eingang (5) dafür ausgelegt ist, von einem Uhrwerk angetrieben zu werden;
    - der zweite Eingang (9) in kinematischer Verbindung mit einem Korrekturräderwerk (11) steht, das sich von einem Steuerorgan (19) aus erstreckt und eine Kupplung (21) aufweist, welche ermöglicht, die kinematische Verbindung zwischen dem Steuerorgan (19) und dem zweiten Eingang (9) herzustellen und zu unterbrechen;
    - der Ausgang (13) dafür ausgelegt ist, eine Anzeigevorrichtung des Uhrwerks anzutreiben, wobei die Winkelposition des Ausgangs (13) in Abhängigkeit von der Winkelposition des ersten Eingangs (5) sowie von derjenigen des zweiten Eingangs (9) definiert wird,
    dadurch gekennzeichnet, dass die Korrekturvorrichtung (1) außerdem einen Speichernocken (23) umfasst, der in desmodromischer Verbindung mit dem zweiten Eingang (9) steht,
    dadurch, dass auf den Speichernocken (23) eine von einem elastischen Organ (31) gelieferte Rückstellkraft einwirkt, die bestrebt ist, den Speichernocken (23) in wenigstens einer vorbestimmten Winkelposition zu halten, wenn die kinematische Verbindung zwischen dem Steuerorgan (19) und dem zweiten Eingang (9) unterbrochen ist, wobei das elastische Organ (31) außerdem dafür ausgelegt ist, eine Rotation des zweiten Eingangs (9) unter der Steuerung des Steuerorgans (19) zu ermöglichen, wenn die kinematische Verbindung bei der Verwendung der Korrekturvorrichtung hergestellt wird,
    und dadurch, dass die Korrekturvorrichtung (1) derart ausgelegt ist, dass die Auswirkung der Rotation des zweiten Eingangs (9) im Verlauf einer Korrektur auf die Winkelposition des Ausgangs (13) aufgehoben wird, wenn sich der Speichernocken (23) in der wenigstens einen vorbestimmten Winkelposition befindet.
  2. Korrekturvorrichtung (1) nach Anspruch 1, wobei das Korrekturräderwerk (11) eine Kupplung (21) umfasst, die sich kinematisch zwischen dem Speichernocken (23) und dem Steuerorgan (19) befindet.
  3. Korrekturvorrichtung (1) nach einem der vorhergehenden Ansprüche, wobei der Speichernocken (23) mit einem Drehteil (27) drehfest verbunden ist, welches Teil des Korrekturräderwerks (11) ist oder welches mit einem einzigen anderen Drehteil des Korrekturräderwerks (11) in Eingriff steht.
  4. Korrekturvorrichtung (1) nach einem der vorhergehenden Ansprüche, wobei das elastische Organ (31) dafür ausgelegt ist, unter der Steuerung der translatorischen Verlagerungen des Steuerorgans (19) verlagert zu werden.
  5. Korrekturvorrichtung (1) nach einem der vorhergehenden Ansprüche, wobei:
    - der erste Eingang (5) mit einem Sonnenritzel (7) drehfest verbunden ist;
    - der zweite Eingang (9) ein Planetenträger ist, der mit wenigstens einem Planetenritzel (17) versehen ist, das mit dem Sonnenritzel (7) in Eingriff steht; und
    - der Ausgang (13) eine gezahnte Krone (15) umfasst, von der eine Innenzahnung mit dem Sonnenritzel (7) in Eingriff steht.
  6. Korrekturvorrichtung (1) nach Anspruch 5, wobei der Ausgang (13) dafür ausgelegt ist, im normalen Betriebsmodus eine Umdrehung in 24 Stunden auszuführen.
  7. Korrekturvorrichtung (1) nach einem der Ansprüche 5 und 6, wobei der erste Eingang (5) dafür ausgelegt ist, im normalen Betriebsmodus eine Umdrehung in 12 Stunden auszuführen.
  8. Korrekturvorrichtung (1) nach einem der Ansprüche 5-7, wobei der Ausgang (13) wenigstens eine gezahnte Platte (13a, 13b) aufweist, die mit wenigstens einem Antriebszahn (37) versehen ist.
  9. Korrekturvorrichtung (1) nach einem der Ansprüche 5-8, wobei der Ausgang (13) mehrere gezahnte Platten (13a, 13b) aufweist, die dafür ausgelegt sind, mit einem Programmrad (33) zusammenzuwirken, mit dem eine ewige Kalendervorrichtung ausgestattet ist.
  10. Uhrwerk, welches mit einer Korrekturvorrichtung (1) nach einem der vorhergehenden Ansprüche versehen ist.
  11. Uhr, welche ein Uhrwerk nach dem vorhergehenden Anspruch umfasst.
EP18789074.4A 2017-10-24 2018-10-15 Korrekturvorrichtung für eine uhr Active EP3701336B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH01294/17A CH714267A1 (fr) 2017-10-24 2017-10-24 Dispositif de correction pour pièce d'horlogerie.
PCT/EP2018/078100 WO2019081253A1 (fr) 2017-10-24 2018-10-15 Dispositif de correction pour piece d'horlogerie

Publications (2)

Publication Number Publication Date
EP3701336A1 EP3701336A1 (de) 2020-09-02
EP3701336B1 true EP3701336B1 (de) 2021-12-01

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Application Number Title Priority Date Filing Date
EP18789074.4A Active EP3701336B1 (de) 2017-10-24 2018-10-15 Korrekturvorrichtung für eine uhr

Country Status (6)

Country Link
US (1) US11635732B2 (de)
EP (1) EP3701336B1 (de)
JP (1) JP7186771B2 (de)
CN (1) CN111279274B (de)
CH (1) CH714267A1 (de)
WO (1) WO2019081253A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024095067A1 (fr) * 2022-11-04 2024-05-10 Van Cleef & Arpels Dispositif d'entraînement pour mécanisme horloger

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH187071A4 (de) * 1971-02-09 1975-12-15
JPS5853755B2 (ja) * 1978-02-08 1983-12-01 セイコーエプソン株式会社 時差修正装置付き暦時計
US4443112A (en) * 1982-09-29 1984-04-17 Timex Corporation Planetary gear for date mechanism in a wristwatch
DE3505733C1 (de) * 1985-02-20 1986-10-23 IWC International Watch Co AG, Schaffhausen Uhr
WO2013030268A1 (fr) * 2011-09-01 2013-03-07 Rolex S.A. Piece d'horlogerie capable d'afficher deux fuseaux horaires
EP2615506B1 (de) 2012-01-10 2014-06-25 Montres Breguet SA Vorrichtung zur Schnellkorrektur eines Anzeigesystems
JP5983080B2 (ja) 2012-06-20 2016-08-31 セイコーエプソン株式会社 ロボットハンド、ロボット、および把持機構
EP2824517A3 (de) * 2013-07-12 2016-06-01 Rolex Sa Uhrmechanismus, Uhrwerk und Uhr

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024095067A1 (fr) * 2022-11-04 2024-05-10 Van Cleef & Arpels Dispositif d'entraînement pour mécanisme horloger
CH720202A1 (fr) * 2022-11-04 2024-05-15 Van Cleef & Arpels SA Dispositif d'entraînement pour mécanisme horloger

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JP7186771B2 (ja) 2022-12-09
JP2021500540A (ja) 2021-01-07
CH714267A1 (fr) 2019-04-30
CN111279274B (zh) 2021-07-27
US20200249628A1 (en) 2020-08-06
US11635732B2 (en) 2023-04-25
EP3701336A1 (de) 2020-09-02
WO2019081253A1 (fr) 2019-05-02
CN111279274A (zh) 2020-06-12

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