EP2063326A2 - Mouvement horloger du type chronographe à rattrappante et pièce d'horlogerie munie d'un tel mouvement - Google Patents

Mouvement horloger du type chronographe à rattrappante et pièce d'horlogerie munie d'un tel mouvement Download PDF

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Publication number
EP2063326A2
EP2063326A2 EP08019674A EP08019674A EP2063326A2 EP 2063326 A2 EP2063326 A2 EP 2063326A2 EP 08019674 A EP08019674 A EP 08019674A EP 08019674 A EP08019674 A EP 08019674A EP 2063326 A2 EP2063326 A2 EP 2063326A2
Authority
EP
European Patent Office
Prior art keywords
chronograph
movement
wheel
split
mobile
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.)
Withdrawn
Application number
EP08019674A
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German (de)
English (en)
French (fr)
Inventor
Jean-Pierre Golay
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.)
Franck Mueller Watchland SA
Original Assignee
Franck Mueller Watchland 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 Franck Mueller Watchland SA filed Critical Franck Mueller Watchland SA
Publication of EP2063326A2 publication Critical patent/EP2063326A2/fr
Withdrawn legal-status Critical Current

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    • 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
    • G04F7/0866—Special arrangements
    • G04F7/0876—Split-time function, e.g. rattrappante

Definitions

  • the present invention relates to a watch movement of the split-seconds chronograph type comprising a frame carrying a finishing gear train capable of being kinematically connected to a chronograph wheel.
  • the latter comprises at least one chronograph mobile having a chronograph shaft for carrying a first second display member, the movement also comprising a rattrapante mobile coaxial with the chronograph mobile and having a splitter shaft for to wear a second display member seconds.
  • the invention also relates to a timepiece provided with such a movement.
  • the chronograph wheel is conventional except for the fact that the shaft of the chronograph wheel is hollow to house the shaft of the jumper wheel which passes through it from one side to the other.
  • the catch-up wheel generally comprises a wheel arranged at the bottom of the movement, that is to say on the bridge side, and carrying a catch-up lever intended to cooperate with a core cam integral with the chronograph wheel, under the effect of the action of a split spring also carried by the wheel. This cooperation ensures the superposition of a split-second needle to a first indication hand of a unit of time, in principle the second.
  • a splitter gripper comprising at least one brake is provided for locking the split-seconds wheel by blocking its wheel, in response to an action of a user of the corresponding timepiece, and stop the split-second needle while the first indicator needle continues its course.
  • the split-flyer is pivoted in the center of the movement in a split-second bridge while the hollow shaft of the chronograph-wheel also performs a guiding function for its shaft.
  • the chronograph mobile shaft is also pivoted in a bearing integral with the movement plate.
  • the fact that the splitter shaft is pivoted in the chronograph shaft has the direct consequence of retransmitting all the forces experienced by the split-seconds mobile on the chronograph mobile, in particular the shocks due to the support.
  • the split lever on the cam in the heart of the chronograph mobile and the friction created by any imbalance of the action of the split-seconds forceps on the wheel of the second-hand mobile.
  • An object of the present invention is to overcome the aforementioned problems of the state of the art, by proposing a split-second chronograph movement in which the operation of the mobile of catch-up has the least possible influence on the operation of the chronograph mobile with which it is associated. In other words, it is to propose a construction by which the chronograph mobile is isolated to the maximum of the mobile rattrapante.
  • the split-seconds chronograph movement according to the invention is characterized by the fact that the split-seconds shaft is hollow and traversed by the chronograph shaft, the catch-up wheel being mounted in rotation with reference to the frame by the intermediate of a bearing.
  • the shaft of the chronograph mobile is free to rotate inside the shaft of the split-seconds mobile which has an improved stability with reference to those of the movements of the prior art because it is rotated directly into an element of the frame.
  • the improvement in the stability of the mobile split-seconds allows in particular to use the use of a single brake assembly more simple than in the case of clamps, without disturbing the operation of the chronograph mobile.
  • the first and second seconds display members are arranged to pivot along a first axis of rotation, the movement further comprising at least one display member for the current hours and a display member for the current running minutes. for pivoting along at least a second axis of rotation, the first axis of rotation being located at a distance from the second axis of rotation.
  • first and second seconds display members are conventionally arranged at the center of the movement, being coaxial with the display hands of the current time, makes it possible to further improve the stability of the assembly of the seconds.
  • first and second display members of the seconds are conventionally arranged at the center of the movement, being coaxial with the display hands of the current time.
  • the wheels of the chronograph mobile and the split-seconds mobile are adjacent without the interposition of an element of the frame between them.
  • the split wheel typically comprises a split lever having a contact surface intended to cooperate with the periphery of a core cam integral with the chronograph wheel.
  • the split wheel can be pivotally mounted in a ball bearing housed in a bridge mounted on the platen of the movement, on its dial side.
  • FIG. 1 is a simplified plan view, on the dial side, of a preferred embodiment of a timepiece movement according to the present invention
  • the figure 2 represents a simplified plan view, on the dial side, of a construction detail of the movement of the figure 1 in a first configuration
  • the figure 3 represents a simplified plan view similar to the view of the figure 2 the movement being visible in a second configuration
  • FIG. figure 4 represents a simplified sectional view along line IV-IV of FIG. figure 1 , a construction detail of the movement of Figures 1 to 3 in the first configuration of the figure 2 .
  • the figure 1 is a simplified plan view, on the dial side, of a preferred embodiment of a timepiece movement according to the present invention.
  • This movement comprises a finishing gear, not shown, connecting a source of mechanical energy, illustrated in the form of a barrel 1 housing a spring, a mechanical oscillator not shown.
  • the finishing gear train is adapted to rotate a carriageway 2 and a hour wheel 3 for carrying, respectively, a minute hand and an hour hand.
  • the movement also comprises a conventional winding and setting wheel 4, controlled from a time-setting rod 5.
  • this movement is equipped with a chronograph function.
  • a chronograph mobile 6 intended to carry an indication needle of the measured seconds of time, by means of its shaft 7, and a mobile of minutes 8 intended to carry an indication needle of the measured minutes of time.
  • a clutch rocker 10, carrying a clutch return 11, is provided to establish a kinematic connection between the finishing train and a wheel 12 of the chronograph mobile 6, or to interrupt it.
  • the movement comprises a rocker 13 pivoted on the plate 14 and carrying a finger 15 for driving one step the wheel 16 of the mobile minutes 8 at each complete revolution of the chronograph mobile 6.
  • the clutch and clutch of the chronograph are made by means of a control 18 having a first end 19, positioned at two o'clock and intended to cooperate with a pusher (not shown), and a second end 20, carrying a hook. acting on a column wheel 21 to rotate it one step (clockwise on the figure 1 ) in response to each user's pressure on the pusher.
  • the figure 1 represents the movement while the chronograph function is activated.
  • one end 22 of the clutch rocker 10 rests on a column of the column wheel 21, which positions the clutch return 11 in engagement with the wheel 12 of the chronograph mobile 6.
  • the end 22 of the clutch rocker falls between two columns, releasing at the same time the clutch return 11 of the wheel 12.
  • the movement of figure 1 also includes a mechanism for resetting the seconds and minutes of time counters measures.
  • This mechanism includes hammers 24 and 26 seconds and minutes, formed here in one piece for illustrative non-limiting. These hammers are pivotally mounted on the plate 14 by means of a bearing screw 27 and are integral with a spout 28 intended to cooperate with the column wheel 21.
  • the reset mechanism also comprises a reset control 30 having a first end 31 positioned at four o'clock and intended to cooperate with an additional pusher to lower the hammers 24 and 26.
  • This control 30 has a second end 32 having a notch 33 cooperating with a pin 34 secured to the hammers.
  • this notch 33 is to keep the hammers in the up position when the measurement of time is stopped by the user. Pressing the additional pusher then releases the pin 34 and lowering the hammers 24 and 26 under the action of a spring not shown.
  • the hammers then cooperate with cams in the heart (one of which is visible on the Figures 2 to 4 ) to reset the seconds and minutes counters to zero, in a conventional manner.
  • a new pressure on the first pusher has the effect of rotating the column wheel 21, a column then raises the spout 28 secured to the hammers, causing the release of the cams heart, until the pin 34 returns to position at the inside of the screen 33.
  • the movement also comprises a conventional brake 36, controlled from the column wheel 21 by means of a rocker 37, to lock the wheel 12 of the chronograph mobile during the stop phases of the measurement of 'a time.
  • the movement further comprises a split-second mechanism whose operation will be described in detail in relation to the Figures 2 to 4 .
  • This mechanism comprises a catch-up wheel having a split wheel 40 coaxial with the wheel 12 of the mobile chronograph 6 and secured to a split shaft 41 for carrying a catch-up needle (not shown).
  • the split-seconds shaft is hollow, the shaft 7 of the chronograph mobile 6 being disposed inside the hollow.
  • a jumper bridge 42 is assembled on the plate 14 of the movement, this bridge bearing a ball bearing 43 having an outer ring 44 frictionally mounted in the bridge 42 and an inner ring (reference 45 on the figure 4 ) in which the split shaft is mounted frictionally.
  • the corresponding assembly is assembled to the movement by means of a nut 46, by way of nonlimiting illustration.
  • the chronograph and split-seconds mobiles are pivoted along a first axis of rotation situated at a distance from a second axis of rotation along which the roadway and the hour wheel are mounted. swiveling (the various display elements have been shown schematically by dashed lines on the figure 1 ).
  • the mechanism also comprises a catch-up brake 48 pivotally mounted on the plate 14 of the movement and controlled by an additional column wheel 51.
  • the brake 48 comprises a spout 50 arranged at a first end for, in a first configuration, resting on a column of the additional column wheel 51 and, in a second configuration, down into the space separating two adjacent columns.
  • the brake also comprises, at its opposite end, a single contact surface 52 arranged to cooperate with the periphery of the split wheel 40 to lock it when the spout 50 does not rest on a column of the additional column wheel.
  • a single contact surface 52 arranged to cooperate with the periphery of the split wheel 40 to lock it when the spout 50 does not rest on a column of the additional column wheel.
  • a third control 53, catch-up, is provided to cooperate with a third pusher (not shown), here at nine o'clock.
  • This control comprises a hook 54 arranged to act on the additional column wheel 51 to rotate one step (counterclockwise on the figure 1 ) each time the user presses on the third push-button, and rotate the brake in one direction or the other.
  • the figures 2 and 3 represent simplified plan views, on the dial side, of a construction detail of the movement of the figure 1 , respectively in a first and a second configuration, in particular to expose the operation of the split-second mechanism.
  • the configuration of the figure 2 corresponds to that of the figure 1 that is, that the measurement of a time is in progress and that the flywheel is free to turn to superimpose the split-second hand to the chronograph hand.
  • the split wheel 40 carries a catch-up lever 56, pivotally mounted near the periphery of the wheel.
  • the retractor lever carries a cylindrical roller 57 arranged to roll on the periphery of a core cam 58 secured to the chronograph mobile 6, under the effect of the action of a split spring (visible on the figure 4 ), in known manner.
  • a split spring visible on the figure 4
  • the split-second control 53 When the split-second control 53 is actuated, the configuration of the movement becomes that of the figure 3 .
  • the additional column wheel 51 turns one step, the split brake 48 is then lowered on the split wheel 40 to block it while the chronograph mobile continues its rotation.
  • the split-second hand is stopped while the chronograph hand continues to rotate.
  • the additional column wheel 51 turns again one step, resulting in the release of the split-second wheel 40 by the brake 48.
  • the split-spring can intervene to press the roller 57 against the periphery of the core cam 58 so as to place it back in the position of the figure 2 .
  • the hands are then again superimposed.
  • the figure 4 represents a simplified sectional view along line IV-IV of FIG. figure 1 , a construction detail of the movement that has just been described in relation to the Figures 1 to 3 , in the first configuration of the figure 2 .
  • This figure makes more obvious the interactions between the elements mentioned above, in particular between the chronograph mobile 6 and rattrapante.
  • the core cam 58 is secured to the chronograph wheel 12 by means of a pin 60, in a conventional manner.
  • the split spring 61 is riveted in the split wheel 40 according to the arrangements of the prior art.
  • chronograph mobile 6 pivots, on the one hand, in a center mobile 62 of the finishing gear train by its end 63 situated inside the movement and, on the other hand, in the split-seconds shaft 41, the latter pivoting in the ball bearing 43, according to the present invention.
  • the mobile rattrapante has an increased stability compared to known mechanisms of the state of the art.
  • the advantageous construction of the movement according to the present invention proposes to arrange the chronograph wheels 12 and the adjuster wheel 40 in such a way that they are adjacent, without the interposition of a frame element between them.
  • the foregoing description attempts to describe a particular embodiment by way of non-limiting illustration and, the invention is not limited, for example, to the disposition of the chronograph wheel on the bridge side of the movement or to the use of a ball bearing to assemble the split-seconds mobile with the frame of the movement.
  • the above description relates to a catch-up associated with a chronograph mobile, intended to display the measured seconds of time, but the skilled person will not encounter any particular difficulty to implement the principles described here, according to its own needs, as for example to associate a catch-up with the counter of measured minutes of time.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
EP08019674A 2007-11-21 2008-11-11 Mouvement horloger du type chronographe à rattrappante et pièce d'horlogerie munie d'un tel mouvement Withdrawn EP2063326A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH01799/07A CH706021B1 (fr) 2007-11-21 2007-11-21 Mouvement horloger du type chronographe à rattrapante et pièce d'horlogerie munie d'un tel mouvement.

Publications (1)

Publication Number Publication Date
EP2063326A2 true EP2063326A2 (fr) 2009-05-27

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EP08019674A Withdrawn EP2063326A2 (fr) 2007-11-21 2008-11-11 Mouvement horloger du type chronographe à rattrappante et pièce d'horlogerie munie d'un tel mouvement

Country Status (6)

Country Link
US (1) US20090129209A1 (ja)
EP (1) EP2063326A2 (ja)
JP (1) JP2009128361A (ja)
CN (1) CN101441438A (ja)
CH (1) CH706021B1 (ja)
RU (1) RU2008145897A (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9477206B2 (en) 2014-11-13 2016-10-25 Société Anonyme de la Manufacture d'Horlogerie Audemars Piguet & Cie Split-seconds device with epicycloidal train for a timepiece

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Publication number Priority date Publication date Assignee Title
DE602007006151D1 (de) * 2007-02-14 2010-06-10 Maurice Lacroix Sa Mechanismus zur umschaltbaren Übertragung
EP2410388B1 (fr) * 2010-07-21 2018-04-18 Blancpain S.A. Pièce d'horlogerie à double affichage
EP2503412B1 (fr) * 2011-03-23 2013-08-28 Montres Breguet SA Mouvement horloger comportant un dispositif à équation du temps marchante
USD789802S1 (en) * 2011-10-14 2017-06-20 Hyt Sa Wrist watch
EP3101486B1 (fr) * 2015-06-02 2018-10-03 ETA SA Manufacture Horlogère Suisse Coeur d'horlogerie ou de chronographe
CN106990697B (zh) * 2017-05-10 2019-04-09 天王电子（深圳）有限公司 手表生肖显示棘轮传动机构
CN107422626B (zh) * 2017-09-13 2022-10-11 杭州正驰达精密机械有限公司 一种自动锤的转轴定位结构

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JPS6173085A (ja) * 1984-09-18 1986-04-15 Citizen Watch Co Ltd クロノグラフ付電子時計
DE3534204A1 (de) * 1984-09-26 1986-04-10 Citizen Watch Co., Ltd., Tokio/Tokyo Elektronische uhr mit stoppeinrichtung
CH679969B5 (ja) * 1990-12-11 1992-11-30 Ebauchesfabrik Eta Ag
EP1243984B1 (fr) * 2001-03-21 2008-12-24 CHRONOSWISS UHREN GmbH Mouvement de montre
EP1336907A2 (de) * 2002-02-14 2003-08-20 Richemont International S.A. Steuerungsmechanismus für Einstellvorrichtungen einer Uhr sowie diesen Mechanismus integrierende Uhren
US6975561B2 (en) * 2002-06-13 2005-12-13 Vaucher Manufacture Fleurier S.A. Chronograph mechanism
EP1491972B1 (de) * 2003-06-26 2006-09-13 Richemont International S.A. Uhr mit Rattrapantenfunktion und entsprechender Rattrapanten-Mechanismus
DE05405596T1 (de) * 2005-10-21 2007-10-11 Rolex Sa Uhr mit einem Mechanismus zur Messung von einstellbaren vorbestimmten Zeitdauern

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
C.-A. REYMONDIN ET AL.: "Théorie d'horlogerie", FÉDÉRATION DES ECOLES TECHNIQUES, pages: 249 - 251

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9477206B2 (en) 2014-11-13 2016-10-25 Société Anonyme de la Manufacture d'Horlogerie Audemars Piguet & Cie Split-seconds device with epicycloidal train for a timepiece

Also Published As

Publication number Publication date
CH706021B1 (fr) 2013-07-31
JP2009128361A (ja) 2009-06-11
US20090129209A1 (en) 2009-05-21
RU2008145897A (ru) 2010-05-27
CN101441438A (zh) 2009-05-27

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