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EP4092491B1 - Uhrwerk mit kupplung - Google Patents

Uhrwerk mit kupplung Download PDF

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Publication number
EP4092491B1
EP4092491B1 EP21174717.5A EP21174717A EP4092491B1 EP 4092491 B1 EP4092491 B1 EP 4092491B1 EP 21174717 A EP21174717 A EP 21174717A EP 4092491 B1 EP4092491 B1 EP 4092491B1
Authority
EP
European Patent Office
Prior art keywords
wheel
mobile
chronograph
timepiece movement
seconds
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.)
Active
Application number
EP21174717.5A
Other languages
English (en)
French (fr)
Other versions
EP4092491A1 (de
Inventor
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
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Filing date
Publication date
Application filed by Patek Philippe SA Geneve filed Critical Patek Philippe SA Geneve
Priority to EP21174717.5A priority Critical patent/EP4092491B1/de
Publication of EP4092491A1 publication Critical patent/EP4092491A1/de
Application granted granted Critical
Publication of EP4092491B1 publication Critical patent/EP4092491B1/de
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Anticipated expiration legal-status Critical

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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
    • G04B19/02—Back-gearing arrangements between gear train and hands
    • G04B19/025—Back-gearing arrangements between gear train and hands for simultaneous indicating on several dials
    • 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
    • G04B11/00—Click devices; Stop clicks; Clutches
    • G04B11/001—Clutch mechanism between two rotating members with transfer of movement in both directions, possibly with limitation on the transfer of power
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
    • G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
    • G04F7/08—Watches or clocks with stop devices, e.g. chronograph
    • G04F7/0823—Watches or clocks with stop devices, e.g. chronograph with couplings between the chronograph mechanism and the base movement
    • G04F7/0838—Watches or clocks with stop devices, e.g. chronograph with couplings between the chronograph mechanism and the base movement involving a tilting movement

Definitions

  • the present invention relates to a watch movement comprising a clutch device, in particular a clutch device allowing the starting and stopping of a chronograph.
  • a clutch lever In classic chronographs, a clutch lever carries a clutch wheel that permanently meshes with a chronograph drive wheel, called a field wheel, which is part of the seconds wheel of the finishing train. In an engaged position of the clutch lever, the clutch wheel meshes with a chronograph wheel to transmit the rotation of the seconds wheel, thus rotating a chronograph hand carried by the chronograph wheel. In a disengaged position of the clutch lever, the clutch wheel does not mesh with the chronograph wheel and the latter is held stationary by a brake or a hammer.
  • the chronograph wheel rotates in the same direction as the seconds wheel, allowing the chronograph hand to rotate in the correct direction, namely clockwise.
  • the chronograph hand in the opposite direction to the rotation of the seconds wheel. This is the case, for example, with double-sided watches where the hours, minutes and seconds of the time measured by the watch movement are displayed on one side of the watch, with the seconds displayed off-center by a small hand attached to the seconds wheel, and where the chronograph hand, centered, is made visible on the opposite side.
  • the present invention aims to solve the above-mentioned problems and to this end proposes a timepiece movement comprising a power source, a finishing train, an escapement connected to the power source by the finishing train, a resonator cooperating with the escapement, a driven wheel set, a clutch lever and a clutch wheel controlled by the clutch lever so as, in an engaged position of the clutch lever, to mesh with the driven wheel set in order to transmit the rotation of the finishing train to the driven wheel set and, in a disengaged position of the clutch lever, to be out of contact with the driven wheel set, characterized in that the clutch wheel is part of a wheel set of the finishing train.
  • the present invention further provides a timepiece, such as a pocket watch, a pendant watch, a wristwatch or a clock, comprising such a watch movement.
  • a timepiece such as a pocket watch, a pendant watch, a wristwatch or a clock, comprising such a watch movement.
  • a watch movement 1 for a timepiece such as a pocket watch, a pendant watch, a wristwatch or a clock, comprises an energy source 2 constituted for example by one or more barrels, a going train 4, an escapement 6 connected to the energy source 2 by the going train 4 and a resonator 8, such as a sprung balance or a flexible guide resonator, the oscillations of which are maintained by the escapement 6.
  • the going train 4 drives a current time display 10 visible through a first crystal of the timepiece.
  • the current time display 10 is formed by hour, minute and second indicator hands associated with a first dial, the second indicator hand being a small hand eccentric relative to the first dial and the watch movement 1.
  • the finishing gear train 4 also drives, on demand, a chronograph mechanism 12 which controls a chronograph display 14.
  • the latter comprises a chronograph hand indicating the chronograph seconds and possibly counter hands indicating the chronograph minutes and hours, this or these hands cooperating with a second dial.
  • the chronograph display 14 is visible through a second crystal of the timepiece located on the face of the timepiece opposite that receiving the first crystal.
  • the finishing gear 4 comprises a center wheel meshing with the energy source 2, a middle wheel meshing with the center wheel and a second wheel meshing with the middle wheel and with the escapement pinion of the escapement 6.
  • the second mobile 18 carries the hand indicating the seconds of the current time, designated by 20.
  • the hands indicating the hours and minutes of the current time are driven by the center wheel in the traditional manner.
  • the chronograph hand, designated 22, is carried by a chronograph wheel 24 located in the center of the watch movement 1, this chronograph wheel 24 driving, if applicable, a minute counter which in turn drives an hour counter.
  • the second wheel 18 comprises, in a conventional manner, a shaft 26 to which a second wheel 28 and a second pinion 30 are secured.
  • the second wheel 28 meshes with the escapement pinion.
  • the second pinion 30 meshes with the wheel of the middle wheel 16.
  • the watch movement 1 is mounted in a frame conventionally comprising a plate 32 and bridges (not shown) fixed to the plate 32.
  • the plate 32 is on the current time display side 10 and the bridges on the chronograph display side 14.
  • the shaft 26 of the second wheel set 18 pivots on one side in a fixed part, namely, in the example illustrated, in a tube 34 fixed to the plate 32 and on the other side in a clutch lever 36 pivotally mounted relative to the plate 32 around an axis B which is distinct from the axis A of the shaft 26 of the second wheel set 18.
  • the shaft 26 of the second wheel set 18 carries a clutch wheel or field wheel 38 secured to the wheel and the second pinion 28, 30.
  • the stones 40, 42 which serve as bearings for the shaft 26 preferably have an olive-shaped hole.
  • the shaft 26 could pivot directly in the plate 32 rather than in a tube 34.
  • the clutch lever 36 is subjected to the action of a return spring (not shown) which allows it to cooperate with a column wheel 44 controlled by the user via a pusher (not shown). Depending on the angular position of the column wheel 44, the clutch rocker 36 can occupy an engaged position and a disengaged position.
  • the clutch lever 36 keeps the shaft 26 of the second wheel set 18 substantially perpendicular to the plate 32 and parallel to the axis B, which keeps the clutch wheel 38 out of contact with the chronograph wheel set 24.
  • the finishing gear 4 rotates continuously, driving the display of the current time 10 but without driving the chronograph wheel set 24 which remains stationary under the action of a brake or a hammer controlled by the column wheel 44.
  • the clutch lever 36 tilts the shaft 26 of the second wheel set 18 in the direction of the chronograph wheel set 24, as represented in an exaggerated manner by the angle ⁇ on the Figure 3 , thus causing the teeth of the clutch wheel 38 to enter those of the chronograph wheel set 24.
  • the brake or the hammer no longer acts on the chronograph wheel set 24 so that the finishing gear 4 drives the latter in rotation. The chronograph is thus in operation until the user stops it by pressing the pusher again to return the clutch lever 36 to its disengaged position.
  • the second pinion 30 continues to mesh with the middle wheel 16.
  • the teeth of the second pinion 30 and the wheel of the middle wheel 16 are in fact sized to avoid any jamming when the clutch lever 36 is in the engaged position.
  • the present invention allows the eccentric running time seconds hand 20 carried by the seconds wheel 18 and the chronograph hand 22 to each rotate in the correct direction, namely clockwise, when one or other of these hands is seen through its respective crystal. This result is obtained without the addition of any reference outside the finishing gear 4, i.e. outside of the kinematic chain between the energy source 2 and the exhaust 6, a return which would be likely to generate gear play.
  • the finishing gear 4 is permanently tensioned by the torque exerted on it by the energy source 2 and by its cooperation with the escapement 6.
  • the torque it transmits to the chronograph wheel set 24 is therefore without gear play.
  • the display accuracy is improved even compared to traditional chronographs with a display of the current time and the measured time on a single face.
  • the present invention is also of particular interest in the case of a so-called indirect second, where the current time seconds hand is centered but driven indirectly by the off-center seconds wheel 18.
  • the invention avoids the need for an additional return outside the going train, in the kinematic chain connecting the seconds wheel to the seconds hand or between the going train and the chronograph wheel.
  • the present invention is not limited to a watch movement comprising a chronograph mechanism. It can be applied to any watch movement comprising a mechanism, chronograph, animation or other, controlled by means of a clutch, with the aim of rotating the mechanism in the opposite direction to the second wheel of the finishing train, or more generally to the wheel of the finishing train which controls said mechanism, without increasing the gear play.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Unknown Time Intervals (AREA)

Claims (7)

  1. Uhrwerk, das eine Energiequelle (2), ein Finissage-Räderwerk (4), eine Hemmung (6), die durch das Finissage-Räderwerk (4) mit der Energiequelle (2) verbunden ist, einen Resonator (8), der mit der Hemmung (6) zusammenwirkt, ein geführtes Drehteil (24), eine Kupplungswippe (36) und ein Kupplungsrad (38) umfasst, das von der Kupplungswippe (36) gesteuert wird, um in einer eingekuppelten Stellung der Kupplungswippe (36) mit dem geführten Drehteil (24) ineinanderzugreifen, um die Drehung des Finissage-Räderwerks (4) auf das geführte Drehteil (24) zu übertragen, und in einer ausgekuppelten Stellung der Kupplungswippe (36) außer Kontakt mit dem geführten Drehteil (24) zu sein, dadurch gekennzeichnet, dass das Kupplungsrad (38) Teil eines Drehteils (18) des Finissage-Räderwerks (4) ist.
  2. Uhrwerk nach Anspruch 1, dadurch gekennzeichnet, dass die Welle (26) des Drehteils (18) des Finissage-Räderwerks (4) auf einer Seite in einem festen Teil (34) des Uhrwerks und auf der anderen Seite in der Kupplungswippe (36) drehbar geführt wird.
  3. Uhrwerk nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Drehteil (18) des Finissage-Räderwerks (4) ein Sekundendrehteil ist.
  4. Uhrwerk nach Anspruch 3, dadurch gekennzeichnet, dass das Sekundendrehteil (18) in Bezug auf das Uhrwerk exzentrisch ist.
  5. Uhrwerk nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das geführte Drehteil (24) ein Chronographen-Drehteil ist.
  6. Uhr, die ein Uhrwerk nach einem der Ansprüche 1 bis 5 umfasst.
  7. Uhr, die ein Uhrwerk nach Anspruch 4 und 5 umfasst, dadurch gekennzeichnet, dass sie auf einer ersten Seite eine Sekundenanzeige (10, 20) der aktuellen Zeit, die von dem Sekundendrehteil (18) mitgenommen wird, und auf einer zweiten Seite, die der ersten Seite entgegengesetzt ist, eine Chronographen-Anzeige (14, 22) umfasst, die von dem Chronographen-Drehteil (24) mitgenommen wird.
EP21174717.5A 2021-05-19 2021-05-19 Uhrwerk mit kupplung Active EP4092491B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP21174717.5A EP4092491B1 (de) 2021-05-19 2021-05-19 Uhrwerk mit kupplung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21174717.5A EP4092491B1 (de) 2021-05-19 2021-05-19 Uhrwerk mit kupplung

Publications (2)

Publication Number Publication Date
EP4092491A1 EP4092491A1 (de) 2022-11-23
EP4092491B1 true EP4092491B1 (de) 2025-03-26

Family

ID=76011812

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21174717.5A Active EP4092491B1 (de) 2021-05-19 2021-05-19 Uhrwerk mit kupplung

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EP (1) EP4092491B1 (de)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US843887A (en) * 1906-02-19 1907-02-12 Adolph Gerson Stop-watch.
CH57805A (fr) * 1911-11-14 1913-02-01 Aurele Donze Montre de poche à double face
CH623980GA3 (en) * 1979-01-19 1981-07-15 Timepiece with chronograph
CH684769B5 (fr) * 1992-03-30 1995-06-30 Technowatch Sa Chronographe.
CH714798B1 (fr) * 2018-03-19 2022-03-31 Hublot Sa Geneve Mécanisme de chronographe pour pièce d'horlogerie.
EP3671370B1 (de) * 2018-12-20 2021-08-04 Patek Philippe SA Genève Kupplungsvorrichtung und chronographenmechanismus, der eine solche kupplungsvorrichtung umfasst

Also Published As

Publication number Publication date
EP4092491A1 (de) 2022-11-23

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