EP2790071A2 - Uhrwerk mit Countdown-Funktion - Google Patents

Uhrwerk mit Countdown-Funktion Download PDF

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Publication number
EP2790071A2
EP2790071A2 EP14160394.4A EP14160394A EP2790071A2 EP 2790071 A2 EP2790071 A2 EP 2790071A2 EP 14160394 A EP14160394 A EP 14160394A EP 2790071 A2 EP2790071 A2 EP 2790071A2
Authority
EP
European Patent Office
Prior art keywords
display
wheel
minutes
counted
movement
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Withdrawn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
EP14160394.4A
Other languages
English (en)
French (fr)
Other versions
EP2790071A3 (de
Inventor
Laurent Besse
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.)
Montres Corum SA
Original Assignee
Montres Corum 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 Montres Corum SA filed Critical Montres Corum SA
Publication of EP2790071A2 publication Critical patent/EP2790071A2/de
Publication of EP2790071A3 publication Critical patent/EP2790071A3/de
Withdrawn legal-status Critical Current

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    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F3/00—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeters with clockwork
    • G04F3/02—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeters with clockwork with mechanical driving mechanisms

Definitions

  • the present invention relates to a countdown clock function comprising at least one minute chronograph counter for driving a display member of the minutes of a measured time, a display mobile for driving a display member minutes minutes to count, and at least one control member arranged to be able to act on the display mobile, in response to an action of a user, and set the display of the number of minutes to count down.
  • the present invention also relates to a timepiece equipped with such a watch movement, which may in particular allow to count down the time before the departure of regattas.
  • timepieces of the type mentioned above have already been disclosed, as for example in the patent application.
  • WO 2011/160970 A1 The watch movement described in this document comprises a chronograph function comprising seconds chronograph counters, minutes and hours, intended to drive corresponding display members.
  • a countdown timer controlling a device Large date type display, which displays a number of minutes to count down with separate displays of tens and minutes units.
  • This patent application provides that the number of minutes to be counted is adjusted by means of two pushers.
  • the drive of the countdown timer provided by a specific barrel, is controlled by the seconds chronograph counter.
  • a non-zero counting time When a non-zero counting time is set, the latter cooperates with a device similar to an escapement to decrement the display of the number of minutes to be counted remaining each minute.
  • the count starts after a user action on a controller also to start the measurement of a time when no duration to be counted is set.
  • An oscillating gear is provided to drive either the countdown counter or the chronograph counters, depending on whether a non-zero counting time is set or not.
  • the watch movement described in this patent application is complicated and is intended only for the production of high-end timepieces.
  • the high level of complication of this movement is explained by the fact that it allows not only to count down the time before the start of a regatta but also to automatically switch from countdown mode to chronograph mode for measure the running time.
  • the selected display mode requires the implementation of a specific cylinder to drive the display of the time to be counted.
  • a main object of the present invention is to overcome the drawbacks of the watch movements known from the prior art, by proposing a relatively simple and inexpensive construction making it possible to obtain a readable display of the duration to be counted without harming that of the timed times. .
  • the present invention relates more particularly to a watch movement of the type mentioned above, characterized in that it comprises a driving wheel having a first kinematic link with the minute chronograph counter and a second kinematic link with the display mobile, the first and second kinematic links being arranged in such a way that the driving mobile is able to drive the display mobile into rotation from the movements of the minute chronograph counter, and in that at least one of the kinematic links has a disengaging mechanism arranged in such a manner the minute chronograph counter remains stationary when the control member is actuated, and that the mobile display remains stationary when the number of minutes to be counted is zero even when the measurement of a time is in progress.
  • the display mobile drive can be performed in a simple manner, as well as the setting of the number of minutes to be counted that can be achieved without affecting the status of the minute chronograph counter.
  • the display and drive mobiles can be coaxial.
  • the driving wheel may comprise a toothed wheel
  • the disengaging mechanism comprises a jumper, integral in rotation with the mobile display and movable between a first position, engaged, in which it ensures a locking of the gear wheel and at least one second position, disengaged, in which the lock is inoperative.
  • the gear wheel can advantageously be engaged with a wheel of the minute chronograph counter.
  • the display member may comprise a disc integral with the display and carrying the jumper and a resilient member arranged to tend to position the latter in its first position.
  • the drive and display mobiles and the display member constitute a compact assembly that can be preassembled before being set up in the watch movement.
  • the disc has at least one arm arranged to cooperate with a first stop surface, integral with a frame member of the watch movement, and prevent the disc from rotating in a first direction of rotation, corresponding to the counting of the minutes, when the number of minutes to count down is zero.
  • the disc to bear a stop arranged to cooperate with a second retractable stop surface, carried by a frame element of the watch movement, and to prevent the disc from rotating in a second direction of rotation, opposite the first direction of rotation, when the number of minutes to be counted is zero.
  • the second stop surface is preferably arranged in such a way that its cooperation with the stop occurs when the display of the number of minutes to be counted passes from 1 to 0.
  • the jumper with a finger arranged to cooperate with a third stop surface, integral with a frame element of the watch movement, when the number of minutes to be counted is zero, in order to position the jumper in its second position and release the drive mobile.
  • the display mobile comprises a wheel having a toothing extending less than 360 degrees and arranged to cooperate with a rotationally rotatable adjusting wheel in response to the action of the user on the controller.
  • control member is a conventional crown rod which, when turned into a drawn axial position, acts on the adjusting wheel to rotate it.
  • the present invention also relates to a timepiece comprising a box housing a watch movement according to the above characteristics.
  • the figure 1 represents a simplified perspective view of a watch movement 1 according to a preferred embodiment of the present invention.
  • the watch movement 1 corresponds to a movement of Valjoux 7750 (registered trademark) type, with indications of the date and the day of the week, which has been modified to implement the present invention.
  • Valjoux 7750 registered trademark
  • those skilled in the art will not encounter any particular difficulty in adapting the present teaching and modifying any other existing and adapted watchmaking caliber. It is also possible to construct a new template without departing from the scope of the present invention.
  • This standard gauge 1 has a well-known construction and includes, in particular, shafts 2, 4 and 6 enabling it to drive indicator needles in the center, respectively, of the hours and minutes of the current time as well as seconds of a measured time.
  • this caliber includes additional trees 8 and 10 intended to carry, respectively, an indicator hand of the minutes of a measured time, at noon, and a hand indicating the hours of a measured time, at six o'clock. All these needles are not shown here for clarity of the figure 1 .
  • a date disk normally provided on the basic caliber is replaced by a disc 14 indicating the minutes to be counted.
  • This one carries indications of minutes on its upper face as well as indications "START” and “STOP” illustrative and not limiting.
  • a dial (not shown) is intended to be positioned on the watch movement 1, the latter having a window, located at three o'clock and through which three indications carried by the disc 14 are visible.
  • the figures 2 and 3 represent, respectively, a perspective view of the disc 14, seen from its face intended to be placed opposite the watch movement, and a simplified perspective view of the watch movement of the figure 1 , the disc 14 being visible in transparency, these views to better appreciate the construction and operation of the watch movement 1 according to the present invention.
  • the disk 14 comprises different members on its lower face, intended to be positioned opposite the watch movement, to ensure its training.
  • the disk 14 is integral with a display mobile comprising a barrel (not visible) carrying a first gear 20 whose teeth extend less than 360 degrees and whose function will be explained later.
  • a drive wheel here composed of a second toothed wheel 22 is engaged, free in rotation, on the barrel of the display unit, between the first wheel 20 and the disk 14.
  • the disk 14 here comprises, in an illustrative manner, a hub 24 secured to a ring 26 by two arms 28.
  • the hub 24 carries a jumper 30, rotatably mounted on the hub and, associated with an elastic return member 32, here having the shape of a spring curved whose base is also integral with the hub 24 and whose free end is arranged in abutment against a first end 34 of the jumper 30.
  • the jumper also comprises a spout 36 arranged to cooperate with the toothing of the second wheel 22 to ensure the locking the latter in rotation.
  • the jumper 30 finally has a finger 37 whose function will be presented in connection with the figure 3 .
  • the disk 14 also carries a stop 38 whose function will be apparent from the description of the figure 3 .
  • the watch movement includes a minute chronograph counter located at noon and comprising a toothed wheel 44, arranged here in engagement with the second wheel 22 to rotate the latter to the rhythm of the minutes.
  • the watch movement 1 also comprises a winding and setting rod 46 having here at least two axial positions, by way of nonlimiting illustration.
  • a first position, depressed is intended to allow the winding of a barrel spring when the rod is actuated in rotation by a user.
  • a first pulled position is normally provided to allow date adjustment in a first direction of rotation of the rod 46 and the day of the week in the opposite direction of rotation.
  • the basic clockwork movement normally comprises a sliding pinion enabling action on two different mechanisms according to the direction of rotation of the rod 46.
  • This sliding pinion is here replaced by a reference 48, arranged in engagement with the first wheel 20 of the mobile phone. display, to rotate the latter in the clockwise direction when the rod 46 is rotated by a user in a predefined direction of rotation.
  • the disk 14 is illustrated on the figure 3 while the number of minutes to count down is zero.
  • the plate 40 carries a pin 50 defining firstly a first stop surface for the disc 14 in the anti-clockwise direction of rotation, via one of its arms 28, but also a second stop surface cooperating with the finger 37 of the jumper 30, so as to oppose the force of the spring 32 and neutralize the locking of the second wheel 22 by the jumper. Also, in this position of the disc 14, the second wheel 22 is free to rotate on the barrel of the display mobile, so with respect to the disc 14.
  • a curved spring 52 integral with the plate 40, has an inclined surface 54 followed by a recess 56, at its free end 58, the recess defining a third stop surface arranged to cooperate with the abutment 38 carried by the disc 14 when the latter is in its position corresponding to a number of minutes to be counted zero.
  • the spring 52 ensures a locking rotation of the disc 14 in the clockwise direction, when the number of minutes to be counted is zero.
  • the window provided in the dial makes it possible to see three indications at the same time, which implies here that the display of the minutes to be counted indicates STOP, 00 and 01, the indication 00 being located at 3 o'clock.
  • the rod When the rod is placed in its first pulled position, it acts on the return 48, via a sliding pinion (conventional, partially visible), to rotate in response to an action of a user turning it itself in one direction or the other, depending on the number of possible references arranged between the rod and the reference 48.
  • a sliding pinion conventional, partially visible
  • This action causes the disk 14 to rotate in the clockwise direction, that is to say in such a way that the number of minutes to be counted increases, by overcoming the retaining force of the spring 52 at the start, in order to extract the stop 38 from the hollow 56.
  • the second wheel 22 is held fixed by its cooperation with the wheel 44 of the minute chronograph counter, itself held fixed by conventional members, such as a hammer of reset or a jumper (not visible) if the chronograph is stopped without having been reset.
  • the force of the spring 32 associated with the jumper 30 is adjusted so that the jumper 30 pivots to cross the teeth of the second wheel 22, when setting the number of minutes to count down.
  • the cooperation of the jumper with the toothing of the second wheel thus defines adjustment steps, two steps being associated here to one minute on the display of the number of minutes to be counted, illustratively non-limiting.
  • the continuous rotation of the rod 46 causes the disk 14 to rotate from step to step, in the sense of a number of minutes to count down.
  • the maximum number of minutes to be counted down has been set at 10, in a nonlimiting manner. Also, if the rod 46 is rotated by a large number of revolutions, greater than the number of revolutions necessary for the disc to advance by 20 steps (from 00 to 10), the first wheel 20 has the portion of its toothing which is interrupted by look at the reference 48, so that it can no longer act on it and turn it. The disk 14 is then positioned so that the 10 is at three o'clock, while the wheel 48 turns in a vacuum if the rod is still actuated in rotation.
  • a countdown of 10 minutes can be started by launching a start of the chronograph function, whose operation is conventional.
  • the minute chronograph counter thus its wheel 44, is driven two steps, the second wheel 22 undergoing the same movement, by meshing with the wheel 44.
  • This movement is then retransmitted to the first wheel 20 of the display mobile, through the jumper 30, so the disc 14 which advances each time two steps in the counterclockwise direction.
  • the running time can then be measured, it being understood that the number of minutes of the initial countdown is to be subtracted from the finally measured duration.
  • the pin 50 acts on the jumper 30, via its finger 37, to neutralize the locking of the second wheel 22 which can then rotate freely relative to the disc 14, because of its meshing with wheel 44.
  • the chronograph can be stopped and reset at any time, in known manner.
  • the reset of the chronograph is performed while the number of minutes to be counted is not zero, it involves a backward movement of the wheel 44, in the direction of rotation anti-clockwise, under the effect of the action of the reset hammer minutes, since the wheel 44 will have traveled less than half a turn at that time, in principle.
  • the wheel 44 drives the second wheel 22 in the clockwise direction of rotation.
  • the display of the value to be counted can be reset manually, at any time, by rotation of the rod 46 in the direction of rotation opposite that to adjust this value, without causing movement of the wheel 44 due to the unlocking of the second wheel 22 by the jumper 30, as described above.
  • the present invention is not limited to a function that would be added to a basic caliber, chronograph function, existing, but could in particular be integrated in a movement developed entirely for the implementation of the present invention.
  • the corresponding timepiece may be used to measure the time separating the user from the start of a regatta or in any other application or a countdown may be necessary.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
EP14160394.4A 2013-03-18 2014-03-18 Uhrwerk mit Countdown-Funktion Withdrawn EP2790071A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH6182013A CH707776A2 (fr) 2013-03-18 2013-03-18 Mouvement horloger à fonction compte à rebours.

Publications (2)

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EP2790071A2 true EP2790071A2 (de) 2014-10-15
EP2790071A3 EP2790071A3 (de) 2016-05-18

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EP14160394.4A Withdrawn EP2790071A3 (de) 2013-03-18 2014-03-18 Uhrwerk mit Countdown-Funktion

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CH (1) CH707776A2 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH721818A1 (fr) * 2024-05-15 2025-11-28 Time It Gmbh Mécanisme de chronographe rétrograde pour l'affichage d'un compte-à-rebours

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0408512B1 (de) 1989-07-13 1992-11-11 Breitling Montres S.A. Chronographenarmbanduhr
WO2011160970A1 (fr) 2010-06-22 2011-12-29 Les Artisans Horlogers Sarl Mouvement horloger presentant des fonctions de chronographe et de compte-a-rebours

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH700512A2 (de) * 2009-03-13 2010-09-15 Richemont Int Sa Chronographenuhr mit einstellbarer Countdownanzeige.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0408512B1 (de) 1989-07-13 1992-11-11 Breitling Montres S.A. Chronographenarmbanduhr
WO2011160970A1 (fr) 2010-06-22 2011-12-29 Les Artisans Horlogers Sarl Mouvement horloger presentant des fonctions de chronographe et de compte-a-rebours

Also Published As

Publication number Publication date
CH707776A2 (fr) 2014-09-30
EP2790071A3 (de) 2016-05-18

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