EP3800512A1 - On-demand-anzeigevorrichtung für uhr - Google Patents

On-demand-anzeigevorrichtung für uhr Download PDF

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Publication number
EP3800512A1
EP3800512A1 EP19201122.9A EP19201122A EP3800512A1 EP 3800512 A1 EP3800512 A1 EP 3800512A1 EP 19201122 A EP19201122 A EP 19201122A EP 3800512 A1 EP3800512 A1 EP 3800512A1
Authority
EP
European Patent Office
Prior art keywords
stop lever
lever
rake
display member
display
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.)
Granted
Application number
EP19201122.9A
Other languages
English (en)
French (fr)
Other versions
EP3800512B1 (de
Inventor
Didier VUILLEMIN
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
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 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
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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 clock member. 'display, a rake arranged to mesh with the pinion so as to control the display member, resilient means arranged to bias the rake and the display member in the direction of 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 the 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 push-piece located on the left of the watch case.
  • the hour display and the minute display are implemented in parallel using two quite 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 pinions arranged in the center of the movement and which respectively carry the hour hand and the minute hand. They are also connected to means of recall arranged so that each of the hands is biased towards its indicating position.
  • the two display mechanisms each include a rake arranged in engagement with the coaxial pinion of the mechanism, so that the needles are slaved to the rakes.
  • the latter also each comprise a feeler arranged to cooperate with the profile of the cam in the form of a snail. 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 actuation mechanisms further comprises an actuation lever controlled by the pusher.
  • Each actuating lever is under the influence of a powerful return spring which is arranged to push it back in the direction of 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 separated from the snail-shaped cams and the hands positioned at 12 o'clock on the dial.
  • the wearer of the watch actuates the pusher, it causes the two actuating levers to tilt, so that the rakes are free to pivot, and their feelers are lowered 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 the current hour and the current minute respectively when the rakes are in the active position. Finally, as soon as the pressure on the pusher is released, the actuating levers return to their initial position, which forces the rakes to pivot again by regaining their retracted angular positions.
  • the time display is controlled strictly manually.
  • the two mechanisms in fact require the hands to accompany the movements of the pusher without any delay and without any fancy.
  • the wearer of the watch exerts pressure on the pusher, he brings the hands into a position indicating the current time.
  • the current time remains displayed as long as the wearer of the watch keeps the push-button pressed.
  • the push-piece returns to its rest position, while the hands come back to stop at 12 o'clock on the dial. It may be thought that the display of the time on demand would be visually more interesting if the manually-operated mechanism were designed to automatically make the hands take some detour when they are actuated with the aid of the pusher.
  • An aim of the present invention is to remedy the drawbacks of the prior art which have just been explained.
  • the present invention achieves this and other object by providing an on-demand display device which is in accordance with the appended claim 1.
  • the manually operated mechanism is arranged for, on the one hand, when the pusher is actuated, causing a displacement of the display member against the elastic means from the rest position to 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 unit begins by moving from the rest position to the predefined position, then starts again in the opposite direction, before finally stopping in the indication position. It will be understood that the additional movement associated with the indirect path followed by the display member constitutes a form animation capable of attracting the eye to the display member of the timepiece.
  • the on-demand display device comprises a stop latch 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 lever when the stop lever 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 of The display stops in its indication position.
  • the indication position is therefore determined by the active position of the stop latch, 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 situated 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 latch to the retracted position so as to release the display member, so as to allow the return spring to release it. pushing back from the indication position to the rest position at a determined instant after the wearer of the timepiece has 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 device for displaying the time on demand, at six successive instants during its operation.
  • the display device shown is in accordance with 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 twelve-step spiral staircase, which is arranged to be driven by the movement (not shown) of the timepiece at the rate of one revolution in twelve hours.
  • a lever with three arms 9 which is part of a manually operated mechanism which also includes a pusher (not shown).
  • the 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 push-piece, 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 urge the lever 9 towards its rest position.
  • a rake 11 which is arranged to pivot about an axis 12 and which is kinematically connected to the retrograde needle 5 by means of a cog formed by a first toothed mobile 15, of 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 comprises 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 lever. watch activates the push-button (not shown).
  • the figures also show a stop lever 23 which is mounted to pivot on an axis 24 and which comprises a first arm terminating in a nose (or feeler) 25 arranged to cooperate with the cam, or snail of the hours, 3 and a second arm 27 arranged to cooperate with the rake 11.
  • the stop lever is arranged to pivot between a retracted position (illustrated in figures 1 and 6 ) in which the probe is kept away from the hour snail, and an active, or reading, position (illustrated in the figures 2 to 5 ) in which the feeler 25 cooperates with the snail 3.
  • a locking lever 29 pivotally mounted on an axis 30, a locking lever 35 carrying a spout 37, and a release mobile 41 which has the shape of a disc provided with a finger 43.
  • the unlocking mobile is arranged to be driven in rotation by the movement.
  • the locking latch 29 is designed to selectively occupy a locked position (illustrated in the figures 1 and 6 ) and an unlocked position (shown in the figures 2 to 5 ). It comprises a beak 31 arranged to cooperate with the stop lever 23, so as to retain the stop lever 23 in its retracted position when the locking lever 29 is itself in the locked position. It can also be seen that the beak 37 of the locking lever 35 is biased towards the locking lever 29 by a spring e.
  • the locking lever 29 further comprises a stopper 33 which is arranged to cooperate with the spout 37 of the locking lever 35 so as to retain the locking lever 29 in the unlocked position.
  • the unlocking mobile 41 is designed to be driven at the speed of one revolution per minute (in the counterclockwise direction). Once per revolution, the finger 43 of the unlocking mobile pushes back the locking lever 25 so as to release the spout 37 from the stopper 33 of the locking lever.
  • the device illustrated in the figures comprises a number of return springs which are only shown in the figure. 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 a person skilled in the art deems appropriate.
  • a first return spring referenced a (already mentioned) is arranged so as to urge the lever 9 with three arms in the 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 clockwise, that a third return spring, referenced c, is arranged so as to return the rocker stop 23 clockwise in the direction of its reading position, that a fourth return spring, referenced d, is arranged so as to return the locking lever 29 clockwise in the direction of its locked position, and that a fifth return spring, referenced e (already mentioned), is arranged so as to return the beak 37 of the locking lever 35 in the direction of the locking lever 29.
  • the operation of the on-demand display device illustrated will now be explained by referring successively to the various figures.
  • the figure 1 illustrates the display device at rest.
  • the pusher (not shown) is not actuated and the lever 9 with three arms 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 pivoted in the clockwise direction, and it is possible to 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 the arc of a circle. It will be understood that this position which gives no time indication is the “rest” position of hand 5.
  • the lever 9 does not interact with the locking lever 29 either. Under these conditions, the locking lever is maintained in its position. locked 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 specified that the return spring d is chosen to be more powerful than the return spring c, so that it has the force necessary to maintain the stop lever 23 in the retracted position.
  • the manually operated mechanism is arranged to cause a displacement of the display member against the elastic means, from the rest position to a predefined position when the pusher (not shown) is actuated.
  • the pusher (not shown) is actuated.
  • the actuation of the pusher has caused the pivoting of the lever 9 with three arms in the clockwise direction against the spring a. While pivoting, one of the arms of the lever 9 has pushed the control arm 17 of the rake 11, so that the latter has pivoted counterclockwise (in other words, against the return spring b), and 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 back from the predefined position towards the rest position when the pusher (not shown) is released.
  • the figure 3 illustrates the device for displaying the time on demand following the release of the push-button (not shown).
  • the locking latch is retained in its unlocked position and the stop latch 23 is free to remain in the active position.
  • the rake 11 has rotated clockwise under the impulse of the return spring b. By pivoting, the rake 11 has driven the retrograde needle 5 which has also rotated clockwise.
  • the stop lever when the stop lever is in the active position, it is arranged to obstruct the travel of the rake when the display member returns from its predefined position towards its rest position, so that the display member is immobilized 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 lever 23 which is arranged to be on the path of the rake 11 when the stop lever 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 lever 23, is determined by the inclination of the stop lever.
  • the probe 25 is supported. against the profile of the 3 hour snail, so that it is the current position of the latter which determines the inclination of the stop lever.
  • the ratio between the lengths of the arms of the stop lever 23, as well as the profile of the side of the rake 11, are chosen so that the indicating position in which the retrograde needle 5 comes to stop, when the rake 11 abuts against the second arm 27, corresponds well to the time to be displayed.
  • the needle 5 then remains in its indicating position until the locking lever 35 is actuated so as to release the spout 37 from the stopper 33.
  • the display device on demand further comprises timing means arranged to, at a determined instant after the wearer of the timepiece has released the push-button, switch the stop latch 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 by figures 4 to 6 , once per revolution of the unlocking mobile 41, the finger 43 pushes back the locking lever 35 so as to make it pivot about its axis 39 against the fifth return spring e. This movement has the effect of releasing the spout 37 from the stopper 33. The figure 4 shows finger 43 as it comes into contact with 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 beak 37 is now released from the stopper 33 of the locking lever 29, the latter now being free to pivot. . It will be understood, however, that at the instant illustrated in the figure 5 , the return spring d has not yet had time to bring the lever 29 to the locked position.
  • the figure 6 illustrates the display device a moment later. It can be seen that the locking lever 29 has rotated clockwise under the action spring d and thus passed into the locked position. The pivoting of the locking latch drove the spout 31 raised the stop latch 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 beak 31 now retains the stop lever 23 in its retracted position, and the feeler 25 is therefore away from the hours 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 path of rake 11 which is now free to pivot. We have seen that the retrograde needle 5 were kinematically connected to the rake by means of a cog. Under these conditions, the rake 11 and the retrograde needle 5 no longer being blocked in the indicating position, the retrograde needle 5 has returned to the rest position under the action of the second return spring b.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
EP19201122.9A 2019-10-02 2019-10-02 On-demand-anzeigevorrichtung für uhr Active EP3800512B1 (de)

Priority Applications (1)

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

Applications Claiming Priority (1)

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

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1936448A2 (de) 2006-12-23 2008-06-25 Frank Müller Watchland S.A. Uhranzeigevorrichtung, die auf Wunsch aktiviert wird
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1936448A2 (de) 2006-12-23 2008-06-25 Frank Müller Watchland S.A. Uhranzeigevorrichtung, die auf Wunsch aktiviert wird
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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