EP3800512B1 - On-demand-anzeigevorrichtung für uhr - Google Patents

On-demand-anzeigevorrichtung für uhr Download PDF

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Publication number
EP3800512B1
EP3800512B1 EP19201122.9A EP19201122A EP3800512B1 EP 3800512 B1 EP3800512 B1 EP 3800512B1 EP 19201122 A EP19201122 A EP 19201122A EP 3800512 B1 EP3800512 B1 EP 3800512B1
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EP
European Patent Office
Prior art keywords
lever
rake
display member
display device
cam
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
EP19201122.9A
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English (en)
French (fr)
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EP3800512A1 (de
Inventor
Didier VUILLEMIN
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Patek Philippe SA Geneve
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Patek Philippe SA Geneve
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Application filed by Patek Philippe SA Geneve filed Critical Patek Philippe SA Geneve
Priority to EP19201122.9A priority Critical patent/EP3800512B1/de
Publication of EP3800512A1 publication Critical patent/EP3800512A1/de
Application granted granted Critical
Publication of EP3800512B1 publication Critical patent/EP3800512B1/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
    • G04B19/02—Back-gearing arrangements between gear train and hands
    • 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
    • G04B19/06—Dials
    • G04B19/08—Geometrical arrangement of the graduations
    • G04B19/082—Geometrical arrangement of the graduations varying from the normal closed scale

Definitions

  • the invention relates to an on-demand display device for a timepiece comprising a cam arranged to be driven by the movement of the timepiece, a retrograde display member, a pinion kinematically connected to the member display, a rake arranged to mesh with the pinion so as to control the display member, elastic means arranged to return the rake and the display member towards a rest position, and a mechanism to manual control comprising a pusher and arranged to control the rake so as to allow the display member to be brought into an indication position from the rest position, the indication position being determined by the current position of drug.
  • the patent document EP 1 936 448 in particular describes a watch equipped with a device for displaying hours and minutes on demand.
  • the hour and minute hands of this watch have the particularity of remaining stationary opposite the 12 o'clock indication on the dial, as long as the display device has not been activated.
  • the wearer of the watch can cause the hours and minutes to be displayed at any time by pressing a pusher located on the left of the watch case.
  • the hour display and the minute display are implemented in parallel using two very similar mechanisms. The latter each have a snail-shaped cam. These two cams are driven from the ground of the movement respectively at the speed of one revolution in 12 hours and one revolution per hour.
  • the two display mechanisms also include two coaxial gears arranged in the center of the movement and which respectively carry the hour hand and the minute hand. They are also linked to means of reminder arranged so that each of the hands is recalled in the direction of its indication position.
  • the two display mechanisms each include a rack arranged in engagement with the coaxial pinion of the mechanism, so that the hands are slaved to the racks.
  • the latter also each include a feeler arranged to cooperate with the profile of the snail-shaped cam. It will therefore be understood that, when the display device is actuated, the positions in which the hands are respectively placed are determined by the current positions of the cams. It will also be understood that, as the rakes are connected to the return means via the needles, the return means also have the effect of lowering the feelers of the rakes against the two snail-shaped cams.
  • Each of the actuating mechanisms also includes an actuating lever controlled by the pusher.
  • Each actuating lever is under the influence of a powerful return spring which is arranged to push it back towards the rake, as long as the pusher is not actuated.
  • the pressure of the actuating levers maintains the rakes in their retracted angular positions, in which the feelers are moved away from the snail-shaped cams and the hands positioned at 12 o'clock on the dial.
  • the wearer of the watch activates the pusher, it causes the two actuating levers to tilt, so that the rakes are free to pivot, and their feelers lower against the profiles of the snail-shaped cams.
  • the snail-shaped cams are dimensioned so that the hour and minute hands come to rest in positions indicating respectively the current hour and the current minute when the rakes are in the active position.
  • on-demand time display devices like the one just described, the control of the time display takes place strictly manually.
  • the two mechanisms require the hands to follow the movements of the pusher without any delay and without any fancy.
  • the wearer of the watch exerts pressure on the pusher, it brings the hands into a position indicating the current time.
  • the current time remains displayed as long as the watch wearer keeps the pusher pressed.
  • the pusher returns to its rest position, while the hands return to rest at 12 o'clock on the dial.
  • the patent document EP 2 615 505 A1 describes a time display mechanism on demand which comprises a timing cam arranged so as to introduce a time difference between the instant when the display of the time is requested and the instant when the indicator hand actually arrives in the indication position. The return of the indicator needle to the rest position also takes place after a predetermined time interval.
  • the patent document EP 2 159 652 A1 describes a mechanism for displaying the time on demand in which it is necessary to actuate a pusher a first time to cause the time to be displayed, and it is necessary to actuate the same pusher a second time for the indicator hands to return to rest position.
  • An aim of the present invention is to remedy the disadvantages of the prior art which have just been explained.
  • the present invention achieves this goal as well as others by providing an on-demand display device which conforms to the appended claim 1.
  • the manually operated mechanism is arranged to, on the one hand, when the pusher is actuated, cause a movement of the display member against the elastic means from the rest position until a predefined position, and on the other hand, when the pusher is then released, allow the elastic means to push the display member from the predefined position towards the rest position.
  • the display member begins by moving from the rest position to the predefined position, then leaves in the opposite direction, before finally stopping in the indication position.
  • the on-demand display device comprises a stop rocker which is movable between a retracted position and an active position in which it cooperates with the cam, so that its active position is determined by the position current of the cam.
  • the stop rocker when the stop rocker is in the active position, it is arranged to interrupt the stroke of the rake when the display member returns from its predefined position towards its rest position, so that the member d
  • the display stops in its indication position.
  • the indication position is therefore determined by the active position of the stop rocker, this active position itself being determined by the current position of the cam. It will also be understood that the indication position of the display member is an intermediate position which is located between the two extreme positions constituted by the predefined position and the rest position.
  • the display device further comprises timing means arranged to switch the stop switch to retracted position so as to release the display member, so as to allow the return spring to push it back from the indication position to the rest position at a determined instant after the wearer of the coin watchmaker released the pusher. It will be understood that the presence of the timing means allows the display member to remain in the indication position for a certain time even though the wearer has already released the pusher.
  • THE figures 1 to 6 are six plan views schematically showing the same time display device on demand, at six successive times during its operation.
  • the display device shown conforms to an exemplary embodiment of the invention, and it is intended to be integrated into a wristwatch (not shown).
  • the on-demand display device shown comprises a retrograde hand 5 which is arranged to cooperate with a scale graduated from 1 to 12 to indicate the hours (the scale is generally referenced 7) .
  • the figures also show a cam 3 in the form of a spiral with twelve steps, which is arranged to be driven by the movement (not shown) of the timepiece at the rate of one revolution in twelve hours.
  • a three-arm lever 9 which is part of a manually operated mechanism which also includes a pusher (not shown).
  • Lever 9 is pivotally mounted on an axis 10, so as to be able to selectively occupy an active position ( figure 2 ) when the wearer of the watch presses the pusher, and a rest position ( figures 1 And 3 to 6 ) when the wearer releases the pusher.
  • a return spring (referenced a) is also provided to bias lever 9 towards its rest position.
  • a rake 11 which is arranged to pivot around an axis 12 and which is kinematically connected to the retrograde needle 5 via a cog formed of a first toothed mobile 15, a intermediate mobile comprising a wheel 19 and a pinion 21, and finally a wheel 13 which carries the needle 5 in the coaxial position.
  • the rake 11 also includes a control arm 17 which is arranged to cooperate with one of the three arms of the lever 9 so that the rake 11 is caused to pivot counterclockwise when the wearer of the watch activates the pusher (not shown) .
  • the figures also show a stop lever 23 which is pivotally mounted on an axis 24 and which comprises a first arm ending in a beak (or feeler) 25 arranged to cooperate with the cam, or hour cochlea, 3 and a second arm 27 arranged to cooperate with the rake 11.
  • the stop rocker is arranged to pivot between a retracted position (illustrated in the figures 1 And 6 ) in which the feeler is kept away from the hour cochlea, and an active, or reading, position (illustrated in the figures 2 to 5 ) in which the feeler 25 cooperates with the cochlea 3.
  • a locking rocker 29 pivotally mounted on an axis 30, a locking lever 35 carrying a beak 37, and an unlocking mobile 41 which has the shape of a disc fitted with a finger 43.
  • the unlocking mobile is arranged to be rotated by the movement.
  • the locking rocker 29 is intended to selectively occupy a locked position (illustrated in the figures 1 And 6 ) and an unlocked position (shown in the figures 2 to 5 ).
  • the locking lever 29 further comprises a stop catch 33 which is arranged to cooperate with the nose 37 of the blocking lever 35 so as to retain the locking lever 29 in the unlocked position.
  • the unlocking mobile 41 is arranged to be driven at a speed of one revolution per minute (counterclockwise). Once per revolution, the finger 43 of the unlocking mobile pushes the blocking lever 25 so as to release the nose 37 of the catch 33 of the locking lever.
  • the device illustrated in the figures has a number of return springs which are only shown in the figure 1 .
  • the five springs illustrated (and referenced respectively a , b, c, d and e) are each represented by a pictogram schematically reproducing the shape of a leaf spring. It will be understood, however, that these springs are not necessarily of the leaf spring type, but can be of any type that those skilled in the art deem appropriate.
  • a first return spring referenced a (already mentioned) is arranged so as to bias the lever 9 with three arms in a counterclockwise direction so as to return it to its rest position against the pusher (not shown), that a second return spring, referenced b, is arranged so as to return the rake 11 in a clockwise direction, that a third return spring, referenced c, is arranged so as to return the rocker stop 23 in the clockwise direction towards its reading position, that a fourth return spring, referenced d, is arranged so as to return the locking rocker 29 in the clockwise direction towards its locked position, and that a fifth return spring, referenced e (already mentioned), is arranged so as to return the nose 37 of the locking lever 35 towards the locking rocker 29.
  • FIG. 1 illustrates the display device at rest.
  • the pusher (no shown) is not actuated and the three-arm lever 9 is held in its rest position by the first return spring a.
  • the lever 9 does not interact with the control arm 17 of the rake 11.
  • the second return spring b keeps the rake 11 completely rotated in the clockwise direction, and we can see that the retrograde hand 5 is immobilized in an off-scale position which is located beyond the indication “12” corresponding to the maximum value of the scale 7 in an arc of a circle. It will be understood that this position which gives no time indication is the “rest” position of the hand 5.
  • the lever 9 does not interact with the locking rocker 29 either. Under these conditions, the locking rocker is held in its locked position by the fourth return spring d. It can be seen that in the locked position, the beak 31 of the locking lever 29 retains the stop lever 23 in its retracted position, the feeler 25 then being held away from the hour snail 3. It will be noted that the return spring d is chosen more powerful than the return spring c, so that it has the necessary force to maintain the stop lever 23 in the retracted position.
  • the manually operated mechanism is arranged to cause a movement of the display member against the elastic means, from the rest position to a predefined position when the pusher (not shown) is activated.
  • the pusher (not shown) is activated.
  • the actuation of the pusher caused the pivoting of the lever 9 with three arms in the clockwise direction against the spring a.
  • the control arm 17 of the rake 11 By pivoting, one of the arms of the lever 9 pushed back the control arm 17 of the rake 11, so that the latter pivoted counterclockwise (in other words, against the return spring b), and that the retrograde hand 5 is now immobilized in an off-scale position which precedes the indication “1” corresponding to the minimum value of the fixed scale 7. It will be understood that this position which gives no time indication is the “predefined position” of the needle 5.
  • the manually operated mechanism is arranged to allow the elastic means to push the display member from the predefined position towards the rest position when the pusher (not shown) is released.
  • FIG 3 illustrates the device for displaying the time on demand following the release of the pusher (not shown). It can be seen that, under the action of the first return spring a, the three-arm lever 9 has returned to its rest position by pushing back the pusher. As already explained, when the lever 9 is in its rest position, it interacts neither with the rake 11 nor with the locking rocker 29. It will be understood, however, that the cooperation of the beak 37 of the locking lever 35 with the notch stop 33 of the locking rocker 29 prevents the fourth return spring d from pushing the rocker 29 clockwise.
  • the locking rocker is retained in its unlocked position and the stop rocker 23 is free to remain in the active position.
  • the rake 11 pivoted clockwise under the impulse of the return spring b. By pivoting, the rake 11 drove the retrograde needle 5 which also pivoted clockwise.
  • the stop rocker when the stop rocker is in the active position, it is arranged to obstruct the movement of the rake when the display member returns from its predefined position towards its position of rest, so that the display member stops in the indication position, the indication position of the display member thus being determined by the active position of the stop rocker.
  • the second arm 27 of the stop rocker 23 which is arranged to be on the trajectory of the rake 11 when the stop rocker is in the active position. In other words, it is the second arm 27 which stops the pivoting of the rake 11 in the clockwise direction.
  • the exact position in which the needle 5 comes to rest, when the rake 11 abuts against the second arm 27 of the stop rocker 23, is determined by the inclination of the stop rocker. Furthermore, as the stop rocker is in the active position, the feeler 25 is supported against the profile of the hour snail 3, so that it is the current position of the latter which determines the inclination of the rocker stop.
  • the ratio between the lengths of the arms of the stop rocker 23, as well as the profile of the side of the rake 11, are chosen so that the indication position in which the retrograde needle 5 stops, when the rake 11 abuts against the second arm 27, corresponds to the time to be displayed.
  • the needle 5 then remains in its indication position until the locking lever 35 is actuated so as to release the nozzle 37 from the stop notch 33.
  • the on-demand display device further comprises timing means arranged to, at a determined instant after the wearer of the timepiece has released the pusher, switch the stop toggle to retracted position so as to release the display member, so as to allow the elastic means to push the display member from the indication position to the rest position.
  • the timing means comprise an unlocking mobile which is rotated by the movement. As shown in the figures 4 to 6 , once per revolution of the unlocking mobile 41, the finger 43 pushes the blocking lever 35 so as to make it pivot around its axis 39 against the fifth return spring e. This movement has the effect to release the nozzle 37 from the catch 33.
  • the Figure 4 shows the finger 43 at the moment when it comes into contact with the locking lever 35.
  • the Figure 5 shows the situation a few seconds later. It can be seen that by turning, the finger 43 has forced the locking lever 35 to tilt, so that its nose 37 is now clear of the stop 33 of the locking lever 29, the latter now being free to pivot . It will be understood, however, that at the moment illustrated in the Figure 5 , the return spring d has not yet had time to bring the rocker 29 into the locked position.
  • FIG. 6 illustrates the display device at the next moment. It can be seen that the locking rocker 29 has pivoted clockwise under the action of the spring d and that it has thus passed into the locked position. The pivoting of the locking rocker caused the nose 31 to lift the stop rocker 23, so that the latter pivoted counterclockwise against the return spring c. In accordance with what has already been explained in relation to the figure 1 , the nozzle 31 now retains the stop lever 23 in its retracted position, and the feeler 25 is therefore away from the hour snail 3. The passage of the stop lever 23 in the retracted position also led to its second arm 27 to move away from the trajectory of the rake 11 which is now free to pivot.
  • the retrograde needle 5 was kinematically connected to the rake via a gear train. Under these conditions, the rake 11 and the retrograde needle 5 no longer being blocked in the indication position, the retrograde needle 5 has returned to the rest position under the action of the second return spring b .

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  • General Physics & Mathematics (AREA)
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Claims (8)

  1. On-Demand-Anzeigevorrichtung für Uhr, die eine Kurvenscheibe (3), die dazu gestaltet ist, durch das Uhrwerk der Uhr mitgenommen zu werden, ein rückläufiges Anzeigeorgan (5), einen Trieb (15), der kinematisch mit dem Anzeigeorgan verbunden ist, einen Rechen (11), der dazu gestaltet ist, derart mit dem Trieb ineinanderzugreifen, dass das Anzeigeorgan gesteuert wird, elastische Mittel (b), die dazu gestaltet sind, den Rechen (11) und das Anzeigeorgan (5) in Richtung einer Ruheposition zurückzuziehen, und einen Mechanismus (9) mit manueller Steuerung umfasst, der einen Drücker umfasst und dazu gestaltet ist, den Rechen (11) derart zu steuern, dass das Bringen des Anzeigeorgans (5) ausgehend von der Ruheposition in eine Angabeposition ermöglicht wird, wobei die Angabeposition durch die gegenwärtige Position der Kurvenscheibe (3) bestimmt ist;
    wobei der manuelle Steuermechanismus (9) einerseits dazu gestaltet ist, eine Verlagerung des Anzeigeorgans (5) gegen die elastischen Mittel (b) von der Ruheposition bis zu einer vordefinierten Position zu bewirken, wenn der Drücker betätigt wird, und es andererseits den elastischen Mitteln zu ermöglichen, das Anzeigeorgan (5) von der vordefinierten Position in Richtung der Ruheposition zurückzudrücken, wenn der Drücker anschließend losgelassen wird, wobei die Anzeigevorrichtung ferner eine Anhaltewippe (23) umfasst, die zwischen einer zurückgezogenen Position und einer aktiven Position beweglich ist, in der sie derart mit der Kurvenscheibe (3) zusammenwirkt, dass ihre aktive Position durch die gegenwärtige Position der Kurvenscheibe bestimmt wird, wobei die Anhaltewippe (23) dazu gestaltet ist, sich in der aktiven Position zu befinden und der Bahn des Rechens (11) im Weg zu stehen, wenn das Anzeigeorgan (5) aus seiner vordefinierten Position in Richtung seiner Ruheposition zurückkehrt, derart dass das Anzeigeorgan an der Angabeposition stehen bleibt, wobei die Angabeposition des Anzeigeorgans (5) durch die aktive Position der Anhaltewippe (23) bestimmt ist, wobei die Anzeigevorrichtung ferner Verzögerungsmittel (35, 37, 41, 43) umfasst, die dazu gestaltet sind, die Anhaltewippe (23) in der zurückgezogenen Position derart zu schalten, dass das Anzeigeorgan (5) befreit wird, derart dass es den elastischen Mitteln (b) ermöglicht wird, das Anzeigeorgan an einem bestimmten Zeitpunkt, nachdem der Drücker losgelassen wurde, von der Angabeposition bis zur Ruheposition zurückzudrücken.
  2. On-Demand-Anzeigevorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Rechen (11) und die Anhaltewippe (23) Kontaktzonen umfassen, wobei das Profil der Kontaktzone des Rechens dazu gestaltet ist, unter der Wirkung der elastischen Mittel gegen das Profil der Kontaktzone der Anhaltewippe in Auflage zu gelangen, wenn die Anhaltewippe sich in der aktiven Position befindet und der Drücker losgelassen wird.
  3. On-Demand-Anzeigevorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass sie eine Verriegelungswippe (29) umfasst, die derart gestaltet ist, dass sie selektiv eine verriegelte Position, in der sie die Anhaltewippe (23) in ihrer zurückgezogenen Position zurückhält, und eine entriegelte Position einnehmen kann, in der die Verriegelungswippe (29) aus der Anhaltewippe (23) außer Eingriff ist, wobei die Verriegelungswippe ferner derart gestaltet ist, dass sie elastisch hin zur verriegelten Position zurückgezogen wird.
  4. On-Demand-Anzeigevorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass der Mechanismus (9) mit manueller Steuerung dazu gestaltet ist, die Verriegelungswippe (29) von ihrer verriegelten Position in ihre entriegelte Position schwenken zu lassen, wenn der Drücker betätigt wird.
  5. On-Demand-Anzeigevorrichtung nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass sie einen Blockierhebel (35) umfasst, der einen Schnabel (37) umfasst, der derart gegen die Verriegelungswippe (29) zurückgezogen wird, dass das Blockieren dieser letzteren in der entriegelten Position ermöglicht wird.
  6. On-Demand-Anzeigevorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass die Verzögerungsmittel (35, 37, 41, 43) ein Entsperrungsdrehteil (41) umfassen, das von dem Uhrwerk mitgenommen wird und dazu gestaltet ist, den Blockierhebel (35) derart zu steuern, dass die Verriegelungswippe (29) am bestimmten Zeitpunkt befreit wird, um dieser letzteren das Kippen hin zur verriegelten Position zu ermöglichen.
  7. On-Demand-Anzeigevorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Anhaltewippe (23) einen ersten Arm umfasst, der mit einem Taster (25) endet, der elastisch in Richtung des Umfangs der Kurvenscheibe (3) beansprucht wird, wobei der Taster (25) dazu gestaltet ist, mit der Kurvenscheibe zusammenzuwirken, wenn die Anhaltewippe (23) sich in der aktiven Position befindet, und um abseits der Kurvenscheibe gehalten zu werden, wenn die Anhaltewippe sich in der zurückgezogenen Position befindet.
  8. On-Demand-Anzeigevorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Anhaltewippe (23) einen zweiten Arm (27) umfasst, der derart gestaltet ist, dass er sich auf der Bahn des Rechens (11) befindet, wenn die Anhaltewippe sich in der aktiven Position befindet, und sich abseits der Bahn des Rechens befindet, wenn die Anhaltewippe sich in der zurückgezogenen Position befindet.
EP19201122.9A 2019-10-02 2019-10-02 On-demand-anzeigevorrichtung für uhr Active EP3800512B1 (de)

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Application Number Priority Date Filing Date Title
EP19201122.9A EP3800512B1 (de) 2019-10-02 2019-10-02 On-demand-anzeigevorrichtung für uhr

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EP3800512A1 EP3800512A1 (de) 2021-04-07
EP3800512B1 true EP3800512B1 (de) 2024-01-10

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Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SG144061A1 (en) 2006-12-23 2008-07-29 Franck Muller Watchland S A On-demand display device for a timepiece
EP2159652A1 (de) * 2008-08-26 2010-03-03 Agenhor SA Anzeigemechanismus für Uhr, der die Anzeige sowie das Ausblenden der aktuellen Uhrzeit ermöglicht
EP2615505A1 (de) * 2012-01-14 2013-07-17 Agenhor SA Anzeigemechanismus nach Informationsanfrage für Uhrwerk

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