EP3208665B1 - Retrograde clock display with retractable hand - Google Patents

Retrograde clock display with retractable hand Download PDF

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Publication number
EP3208665B1
EP3208665B1 EP16156269.9A EP16156269A EP3208665B1 EP 3208665 B1 EP3208665 B1 EP 3208665B1 EP 16156269 A EP16156269 A EP 16156269A EP 3208665 B1 EP3208665 B1 EP 3208665B1
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EP
European Patent Office
Prior art keywords
display mechanism
wheel
cam
rack
indicator plate
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
EP16156269.9A
Other languages
German (de)
French (fr)
Other versions
EP3208665A1 (en
Inventor
Mehdi Denden
Edmond Capt
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.)
Blancpain SA
Original Assignee
Blancpain 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 Blancpain SA filed Critical Blancpain SA
Priority to EP16156269.9A priority Critical patent/EP3208665B1/en
Priority to US15/397,219 priority patent/US10222749B2/en
Priority to KR1020170006995A priority patent/KR101946136B1/en
Priority to JP2017017550A priority patent/JP6340099B2/en
Priority to RU2017105051A priority patent/RU2017105051A/en
Priority to CN201710085721.0A priority patent/CN107092180B/en
Publication of EP3208665A1 publication Critical patent/EP3208665A1/en
Application granted granted Critical
Publication of EP3208665B1 publication Critical patent/EP3208665B1/en
Active legal-status Critical Current
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
    • G04B15/00—Escapements
    • G04B15/14—Component parts or constructional details, e.g. construction of the lever or the escape wheel
    • 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
    • G04B19/04—Hands; Discs with a single mark or the like
    • G04B19/044—Mounting and setting of the hands on the axle
    • 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
    • G04B19/04—Hands; Discs with a single mark or the like
    • G04B19/042—Construction and manufacture of the hands; arrangements for increasing reading accuracy
    • 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
    • G04B19/04—Hands; Discs with a single mark or the like
    • 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
    • G04B19/04—Hands; Discs with a single mark or the like
    • G04B19/048—Hands; Discs with a single mark or the like having the possibility of indicating on more than one scale, e.g. hands with variable length which work on different scales
    • 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
    • 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
    • G04B31/00—Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor
    • 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
    • G04B45/00—Time pieces of which the indicating means or cases provoke special effects, e.g. aesthetic effects
    • G04B45/0038—Figures or parts thereof moved by the clockwork
    • G04B45/0061—Moving parts of the clockwork, e.g. pendulum, hands in special form, mostly constructed as a figure

Definitions

  • the invention relates to a clock display mechanism comprising a cam driven by a time base, and a pivoting lever having a feeler along the contour of this cam in elastic return and a first rake meshing with a first orientation wheel angular which drives an indicator plate synchronously or through a differential mechanism, said indicator plate protruding radially from a main axis and being parallel or coplanar with the first wheel.
  • the invention also relates to a watch movement comprising at least one such display mechanism.
  • the invention relates to a watch comprising such a clockwork movement, and / or comprising at least one such display mechanism.
  • the invention relates to the field of clock display mechanisms.
  • the space available on the watch dials does not always make it possible to display in readable conditions, especially when the watch cases are small, and / or of a shape other than circular. This difficulty is magnified when there are multiple complications in the movement, causing a conflict between the display areas.
  • the documents CH 704 696 , EP 2 824 521 and WO 2007/110451 disclose retrograde display trains.
  • the document US 5,280,461 discloses a retractable display.
  • the invention proposes to create a display with retractable display, in particular a retractable needle, and in particular according to the angular position of a display support, such as a needle body or the like.
  • the invention relates to a clock display mechanism according to claim 1.
  • the invention also relates to a watch movement comprising at least one such display mechanism.
  • the invention relates to a watch comprising such a clockwork movement, and / or comprising at least one such display mechanism.
  • the invention proposes to create a display with retractable display, in particular a retractable needle, and in particular according to the angular position of a display support, such as a needle body or the like. It is described here in the particular and non-limiting case of a needle.
  • the needle extends and retracts during its race, allowing it to have a curvilinear course, including elliptical in the variants illustrated by the figures, instead of following a circular arc.
  • This configuration makes it possible to adapt the trajectory of the needle to the shape of the dial or the box, which provides a good readability, and moreover an innovative and particular aesthetic effect.
  • the invention uses a connecting rod / crank mechanism which, in a particular application, is combined with a retrograde system.
  • the invention relates to a clock display mechanism 1 which comprises, arranged on a bridge 11, a cam 2 arranged to be driven by a time base that includes a clockwork movement 100, at an output 101 , and a flip-flop 3.
  • This rocker 3 is pivotally mounted about a rocker axis AB, it comprises on the one hand a feeler 4 which follows the contour of the cam 2 under the action of elastic return means, and on the other hand a first rake 5 in a circular arc around the rocker axis AB.
  • the display mechanism 1 further comprises a first angular orientation wheel 6, which directly or indirectly drives an indicator plate 7.
  • the first rake 5 meshes with this first angular orientation wheel 6 for its rotational drive around it. a first axis.
  • the first angular orientation wheel 6 drives the indicator plate 7, or in a synchronous manner as visible on the first and second embodiments illustrated respectively on the Figures 1 to 7 and 8 to 14 , or else through a differential mechanism 30 as visible on the figure 15 in a third embodiment.
  • the indicator plate 7 protrudes radially with respect to a main axis AP, and is parallel or coplanar with the first wheel 6. More particularly, the first axis and the main axis AP coincide.
  • the display mechanism 1 comprises a connecting rod 8, which is articulated at a first end 81 with a carriage 9 slidably mounted on the indicator plate 7 and which carriage 9 preferably carries a retractable needle 10, or constitutes such a needle, or a display of another form.
  • a second end 82 of the connecting rod 8 is pivoted, either on a fixed pivot 12 at the level of the bridge 11 in the case of the first embodiment, or on a movable pivot that includes an elongation wheel driven directly or indirectly by flip-flop 3, in the second and the third embodiment.
  • the first angular orientation wheel 6 synchronously drives the indicator plate 7, directly or through a gear train, and at the second end of the connecting rod 8 is pivoted on a fixed pivot 12 at the level of the bridge 11 .
  • the display mechanism 1 is retrograde.
  • the cam 2 is a snail cam having, on its maximum radius, a spout 21 whose passage controls a jump of the probe 4 back on the minimum radius of the cam 2.
  • the display mechanism 1 comprises again, pivoted on the bridge 11, a third rake 25 which is recalled by primary resilient biasing means 26, and which meshes with the first angular orientation wheel 6 for the play catching during its retrograde recall on the jump of the feeler 4 back on the minimum radius of the cam 2.
  • the profile of the cam is adapted to the path that is desired, the above example being dedicated to a retrograde display in a given angular sector.
  • other profiles are feasible, for other paths, for example a cam-heart that travels an elliptical path back and forth at the same speed, or other.
  • the indicator plate 7 comprises at least a first counterweight 71 which is arranged to balance, with respect to the main axis AP, the assembly that forms the indicator plate 7, with the 9 carriage halfway of it, and with the retractable needle 10.
  • the cam 2 rotates clockwise.
  • the cam 2 raises the first rake 5, which is forced against the cam 2 by a return spring not shown.
  • the indicator plate 7 is here, without limitation, integral with the first wheel of angular orientation 6, and is therefore driven by the first rake 5.
  • the indicator plate 7 push the rod 8 at its first end 81 via a hinge shaft.
  • the carriage 9 is connected to two shafts which can slide on the indicator plate 7, one of them being that of articulation of the connecting rod 8.
  • the center of rotation of the connecting rod 8, at its second end 82, is located at the fixed pivot 12, and is different from that of the indicator plate 7
  • the rod 8 pushes or pulls the hinge shaft located at its first end 81, which causes the carriage 9, respectively the elongation or retraction of the needle 10.
  • the needle 10 slides thus, to lengthen or retract, while pivoting with respect to the main axis AP.
  • the first angular orientation wheel 6 drives the indicator plate 7 synchronously directly or through a train
  • the lever 3 carries, parallel to the first rake 5, a second rake 15 which meshes with a second wheel the second elongation wheel 16 is synchronous with a lever 18 constituting such a mobile elongation, and which carries a lever pivot 13 constituting the movable pivot articulation of the rod 8, the second wheel 16 being parallel or coplanar with the lever 18.
  • the second wheel 16 is integral with the lever 18.
  • the display mechanism 1 further comprises, pivoted on the bridge 11, a fourth rake 27 recalled by secondary elastic return means, which can be confused with the primary elastic return means 26 as in the case of Figures 8 to 14 and this fourth rake 27 meshes with the second elongation wheel 16 for the play catching during its retrograde return when the probe 4 is jumped back on the minimum radius of the cam 2.
  • the elongation mobile preferably comprises at least a second counterweight 72 which is arranged to balance, with respect to the main axis AP, the assembly that forms the lever 18 with the mobile pivot 13 and with the connecting rod 8.
  • the kinematics is similar to that of the first mode, but this time the second end 82 of the connecting rod 8 is pivoted to a moving point, which is carried by the lever 18.
  • Cam 2 rotates clockwise. By turning, the cam 2 raises the first rake 5, which is forced against the cam 2 by a return spring not shown.
  • the indicator plate 7 is integral with the first angular orientation wheel 6, and is thus driven by the first rake 5.
  • the second rake 15, which is integral with the first rake 5, drives the second elongation wheel 16, which itself drives the rod 8 via the lever 18 secured to the second elongation wheel 16.
  • the carriage 9 is connected to two shafts which can slide on the indicator plate 7. The carriage 9 and the lever 18 do not rotate at the same speed, because of the different gear ratio, the indicator plate 7 then pushes the rod 8 at its first end through the shaft, pushing or pulling this shaft and thus the carriage 9.
  • the needle 10 thus slides to lengthen or retract, while pivoting relative to the main axis AP.
  • the connecting rod 8 preferably comprises a third balancing counterweight 83.
  • a third mode uses a differential that can handle multiple speeds. It is a differential mechanism with a connecting rod connected to a differential cage, whose combination of the two inputs, which are fed by a rake palpating a cam or by the movement, allows the tip of the needle to follow an arbitrary geometric trajectory imposed by the profile and the speed of rotation of the cam. Indeed, if for example the cam is oval and rotates at the same speed as the needle, it follows an elliptical trajectory; if the cam rotates at a multiple speed integral with that of the needle, a multilobed trajectory of the needle is obtained.
  • this differential allows you to display a wide variety of geometric trajectories.
  • the first differential input is directly related to the movement (one lap per hour for a minute display, one lap per 12 hours for a display of hours, etc ).
  • the second entry is linked to a rake that palpates a cam.
  • the output of the differential sums the speeds of the two inputs and turns the connecting rod.
  • the elongation of the needle depends directly on the shape of the cam.
  • a cam in the heart allows the needle to follow an oval: during the rise of the cam, the rod goes faster than the plate 180 °, elongation and retraction of the needle 180 °; then descent of the cam where the rod goes slower than the plate over 180 ° and returns to its initial position, elongation and retraction of the needle on 180 °
  • cam profile makes it possible to obtain a particular geometric, elliptical, square, rectangular or other path.
  • this third embodiment relates to a differential mechanism, in which the first angular orientation wheel 6 meshes with a first mobile 31 which constitutes a first input of the differential mechanism 30, or itself constitutes the first mobile 31 as in FIG. the case of the figure.
  • the display mechanism 1 comprises a second mobile 32, which, driven directly or indirectly by an output 101 of the movement 100, or constituted by such an output 101, is synchronous with the cam 2, and which drives the indicator plate 7.
  • This indicator plate 7 constitutes a second input of the differential mechanism 30.
  • This differential mechanism 30 conventionally comprises a differential cage 35, constituting such an elongation mobile, and which carries a cage pivot 36 constituting the movable hinge pivot of the connecting rod 8.
  • the indicator plate 7 comprises at least one satellite pivot 33, which carries a satellite 34 meshing with both the differential cage 35 and the first mobile 31, here guided in a guide 310 of the bridge 11 or another component of the movement structure 100.
  • the variant of the figure 15 has a shaft portion of the first movable 31 likely to collide with the rod 8, which requires the choice of a retrograde mechanism as described in detail for the first and second modes.
  • This differential mechanism may have several variants.
  • Another variant is to replace the second mobile 32 by a rake, engaged on a plate wheel 70 secured to the indicator plate 7, and which palpates a cam driven by the movement.
  • the third differential mode makes it possible to obtain a rotation of the needle over 360 °, the first retrograde rake 5 of the first and second modes is then no longer useful, and only the second rake 15, elongation, of the second mode, is preserved.
  • the carriage 9 is movable in a radial direction R with respect to the main axis AP, as visible in the figures.
  • the first rake 5 is angularly adjustable, with reference to the flip-flop axis AB, relative to the feeler 4.
  • a first adjustment device 40 comprises in particular an eccentric screw 42 cooperating with an oblong 41.
  • the second elongation wheel 16 pivots around the main axis AP.
  • the first rake 5 and the second rake 15 have different radii with respect to the flip-flop axis AB. More particularly, the second rake 15 has a radius smaller than that of the first rake 5.
  • the second rake 15 is angularly adjustable, with respect to the rocker axis AB, relative to the first rake 5.
  • a second adjusting device 50 comprises in particular an eccentric screw 52 cooperating with an oblong 51.
  • the invention also relates to a watch movement 100 comprising at least one such display mechanism 1, driven by an output 101 or the like.
  • the invention relates to a watch 200 comprising such a watch movement 100, and / or comprising at least one such display mechanism 1.
  • the advantage of a retractable display according to the invention is to allow a wide variety of displays, with particular trajectories, in particular areas of the dial of the watch.
  • the rake of the retrograde mechanism is used to control both the angular orientation and the radial extension of the needle. This rake is animated by an alternating movement.
  • the only continuous drive is that of the snail cam, so it is not necessary to have a continuous drive by the center wheel, which facilitates the implantation topology in the watch case.
  • the invention makes it possible to adapt to any shape and size of box, in particular to the oval boxes that are appreciated for ladies' watches.
  • the drivers of the connecting rod and the retrograde needle are coaxial, which ensures a perfect positioning of the components.
  • the connecting rod has a direct pivoting on the bridge, by ball bearing, or rocking, or other, of free design and not limited by the bulk of moving components.
  • the first rake can be disconnected from the cam follower for regal retrograde initial position. If the connecting pin is made at a moving bridge, not shown in the figures, it is still possible to adjust the initial elongation of the needle.
  • the low number of pivoting components makes it possible to minimize the residual clearance.
  • the existence of a single catch-up rake makes it possible to constrain the entire mechanism, and to limit the sensitivity of the needle to impacts, in particular to limit its vibration.
  • the few superimposed components allow a low total thickness of this display mechanism.
  • the rod drivers and the retrograde needle are coaxial, which also ensures perfect positioning of the components.
  • Each of the two rakes manages a particular movement of the needle: the first rake manages the rotation, and the second rake manages the translation. It is therefore possible and easy, thanks to eccentrics, to adjust the initial position and elongation of the needle, unlike the retrograde displays of the prior art, where the indexing of the display is done at the same time. switching operation, by delicate and unique handling.
  • the rotational drive of the connecting rod allows to have an additional parameter for the dimensioning of the elongation of the needle.
  • the play catch rakes acting on the first angular orientation wheel and the second elongation wheel can constrain the needle, and strongly limit the vibration of the needle shock.
  • the high inertia of the needle during its return to position can be used to drive a disc on jumper.
  • this hand displays the minute, and the time is displayed on a jumping disc.
  • the minute hand hits an hour coach that makes the hours jump, the inertia of the minute hand helping the jumping hours, which makes it possible, and greatly facilitates , the synchronization of the jumps of the displays.
  • the retractable and retrograde display according to the invention is modular.
  • connecting rod-crank system makes it possible to dispense with systems with cam paths milled in a bridge or a plate, and thus known problems of burrs or milling precision.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Geometry (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
  • Transmission Devices (AREA)
  • Electromechanical Clocks (AREA)

Description

Domaine de l'inventionField of the invention

L'invention concerne un mécanisme d'affichage d'horlogerie comportant une came entraînée par une base de temps, et une bascule pivotante comportant un palpeur suivant le contour de cette came sous rappel élastique et un premier râteau engrenant avec une première roue d'orientation angulaire laquelle entraîne un plateau d'indicateur de façon synchrone ou bien au travers d'un mécanisme différentiel, ce plateau d'indicateur saillant radialement par rapport à un axe principal et étant parallèle ou coplanaire avec la première roue.The invention relates to a clock display mechanism comprising a cam driven by a time base, and a pivoting lever having a feeler along the contour of this cam in elastic return and a first rake meshing with a first orientation wheel angular which drives an indicator plate synchronously or through a differential mechanism, said indicator plate protruding radially from a main axis and being parallel or coplanar with the first wheel.

L'invention concerne encore un mouvement d'horlogerie comportant au moins un tel mécanisme d'affichage.The invention also relates to a watch movement comprising at least one such display mechanism.

L'invention concerne une montre comportant un tel mouvement d'horlogerie, et/ou comportant au moins un tel mécanisme d'affichage.The invention relates to a watch comprising such a clockwork movement, and / or comprising at least one such display mechanism.

L'invention concerne le domaine des mécanismes d'affichage d'horlogerie.The invention relates to the field of clock display mechanisms.

Arrière-plan de l'inventionBackground of the invention

L'espace disponible sur les cadrans de montre ne permet pas toujours d'effectuer des affichages dans de bonnes conditions de lisibilité, surtout lorsque les boîtes de montre sont petites, ou/et de forme autre que circulaire. Cette difficulté est amplifiée lors de la présence de complications multiples dans le mouvement, générant un conflit entre les zones d'affichage.The space available on the watch dials does not always make it possible to display in readable conditions, especially when the watch cases are small, and / or of a shape other than circular. This difficulty is magnified when there are multiple complications in the movement, causing a conflict between the display areas.

Le pilotage d'un afficheur, notamment une aiguille, sur une trajectoire imposée, autre que circulaire, se traduit souvent par l'emploi de cames fraisées, par un encombrement sensible en épaisseur, et par une absence de polyvalence et une difficulté à reconditionner le mécanisme pour un affichage avec une trajectoire différente. Les mécanismes d'aiguilles articulées connus ne permettent pas de réglage facile des orientations et des élongations de référence des aiguilles. Ces complications nécessitent, de plus, de la main d'oeuvre de haute qualification.The piloting of a display, in particular a needle, on an imposed trajectory, other than circular, often results in the use of countersunk cams, a substantial bulk in thickness, and a lack of versatility and a difficulty in repackaging the mechanism for a display with a different trajectory. Known articulated needle mechanisms do not allow easy adjustment of the orientations and reference elongations of the needles. These complications require, moreover, highly qualified manpower.

Les documents CH 704 696 , EP 2 824 521 et WO 2007/110451 divulguent des trains d'affichage rétrogrades.
Le document US 5 280 461 divulgue un afficheur rétractable.The documents CH 704 696 , EP 2 824 521 and WO 2007/110451 disclose retrograde display trains.
The document US 5,280,461 discloses a retractable display.

Résumé de l'inventionSummary of the invention

L'invention se propose de créer un affichage avec afficheur rétractable, notamment une aiguille rétractable, et en particulier selon la position angulaire d'un support d'afficheur, tel qu'un corps d'aiguille ou similaire.The invention proposes to create a display with retractable display, in particular a retractable needle, and in particular according to the angular position of a display support, such as a needle body or the like.

L'invention concerne un mécanisme d'affichage d'horlogerie selon la revendication 1.The invention relates to a clock display mechanism according to claim 1.

L'invention concerne encore un mouvement d'horlogerie comportant au moins un tel mécanisme d'affichage.The invention also relates to a watch movement comprising at least one such display mechanism.

L'invention concerne une montre comportant un tel mouvement d'horlogerie, et/ou comportant au moins un tel mécanisme d'affichage.The invention relates to a watch comprising such a clockwork movement, and / or comprising at least one such display mechanism.

Description sommaire des dessinsBrief description of the drawings

D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée qui va suivre, en référence aux dessins annexés, où :

  • les figures 1 à 5 représentent, de façon schématisée et en plan, un même mécanisme d'affichage selon un premier mode de réalisation de l'invention, dans cinq étapes temporelles successives entre un état initial et un état final, en passant par une élongation puis une contraction de l'aiguille;
  • les figures 6 et 7 représentent, de façon schématisée et en coupe, le mécanisme d'affichage des figures 1 à 5, selon les lignes de coupe AA et BB visibles sur la figure 3 ;
  • les figures 8 à 12 représentent, de façon schématisée et en plan, un même mécanisme d'affichage selon un deuxième mode de réalisation de l'invention, dans cinq étapes temporelles successives entre un état initial et un état final, en passant par une élongation puis une contraction de l'aiguille;
  • les figures 13 et 14 représentent, de façon schématisée et en coupe, le mécanisme d'affichage des figures 8 à 12, selon les lignes de coupe AA et BB visibles sur la figure 10;
  • la figure 15 représentent, de façon schématisée et en coupe, un troisième mode de réalisation de l'invention ;
  • la figure 16 est un schéma-blocs représentant une montre comportant un mouvement qui comporte lui-même un mécanisme d'affichage selon l'invention.
Other features and advantages of the invention will appear on reading the detailed description which follows, with reference to the appended drawings, in which:
  • the Figures 1 to 5 represent schematically and in plan, the same display mechanism according to a first embodiment of the invention, in five successive time steps between an initial state and a final state, through an elongation and then a contraction of the 'needle;
  • the Figures 6 and 7 represent, in a schematic and sectional view, the mechanism for displaying Figures 1 to 5 , according to the cutting lines AA and BB visible on the figure 3 ;
  • the Figures 8 to 12 represent schematically and in plan, the same display mechanism according to a second embodiment of the invention, in five successive time steps between an initial state and a final state, through an elongation and then a contraction of the 'needle;
  • the Figures 13 and 14 represent, in a schematic and sectional view, the mechanism for displaying Figures 8 to 12 , according to the cutting lines AA and BB visible on the figure 10 ;
  • the figure 15 show, schematically and in section, a third embodiment of the invention;
  • the figure 16 is a block diagram showing a watch having a movement which itself comprises a display mechanism according to the invention.

Description détaillée des modes de réalisation préférésDetailed Description of the Preferred Embodiments

L'invention se propose de créer un affichage avec afficheur rétractable, notamment une aiguille rétractable, et en particulier selon la position angulaire d'un support d'afficheur, tel qu'un corps d'aiguille ou similaire. Elle est décrite ici dans le cas particulier et non limitatif d'une aiguille.The invention proposes to create a display with retractable display, in particular a retractable needle, and in particular according to the angular position of a display support, such as a needle body or the like. It is described here in the particular and non-limiting case of a needle.

Cet affichage est peu commun. En effet, l'aiguille s'allonge et se rétracte lors de sa course, lui permettant ainsi d'avoir un parcours curviligne, notamment elliptique dans les variantes illustrées par les figures, au lieu de suivre un arc de cercle. Cette configuration permet d'adapter la trajectoire de l'aiguille à la forme du cadran ou de la boîte, ce qui procure une bonne lisibilité, et de plus un effet esthétique innovant et particulier. Pour ce faire, l'invention met en oeuvre un mécanisme de bielle/manivelle, qui, dans une application particulière, est combinée à un système rétrograde.This display is unusual. Indeed, the needle extends and retracts during its race, allowing it to have a curvilinear course, including elliptical in the variants illustrated by the figures, instead of following a circular arc. This configuration makes it possible to adapt the trajectory of the needle to the shape of the dial or the box, which provides a good readability, and moreover an innovative and particular aesthetic effect. To do this, the invention uses a connecting rod / crank mechanism which, in a particular application, is combined with a retrograde system.

L'invention concerne un mécanisme d'affichage 1 d'horlogerie qui comporte, agencés sur un pont 11, une came 2 agencée pour être entraînée par une base de temps que comporte un mouvement d'horlogerie 100, au niveau d'une sortie 101, et une bascule 3.The invention relates to a clock display mechanism 1 which comprises, arranged on a bridge 11, a cam 2 arranged to be driven by a time base that includes a clockwork movement 100, at an output 101 , and a flip-flop 3.

Cette bascule 3 est montée pivotante autour d'un axe de bascule AB, elle comporte d'une part un palpeur 4 qui suit le contour de la came 2 sous l'action de moyens de rappel élastique, et d'autre part un premier râteau 5 en arc circulaire autour de l'axe de bascule AB.This rocker 3 is pivotally mounted about a rocker axis AB, it comprises on the one hand a feeler 4 which follows the contour of the cam 2 under the action of elastic return means, and on the other hand a first rake 5 in a circular arc around the rocker axis AB.

Le mécanisme d'affichage 1 comporte encore une première roue d'orientation angulaire 6, qui entraîne directement ou indirectement un plateau d'indicateur 7. Le premier râteau 5 engrène avec cette première roue d'orientation angulaire 6 pour son entraînement en rotation autour d'un premier axe. La première roue d'orientation angulaire 6 entraîne le plateau d'indicateur 7, ou bien de façon synchrone tel que visible sur le premier et le deuxième mode de réalisation illustrés respectivement sur les figures 1 à 7 et 8 à 14, ou bien au travers d'un mécanisme différentiel 30 tel que visible sur la figure 15 dans un troisième mode de réalisation.The display mechanism 1 further comprises a first angular orientation wheel 6, which directly or indirectly drives an indicator plate 7. The first rake 5 meshes with this first angular orientation wheel 6 for its rotational drive around it. a first axis. The first angular orientation wheel 6 drives the indicator plate 7, or in a synchronous manner as visible on the first and second embodiments illustrated respectively on the Figures 1 to 7 and 8 to 14 , or else through a differential mechanism 30 as visible on the figure 15 in a third embodiment.

Le plateau d'indicateur 7 est saillant radialement par rapport à un axe principal AP, et est parallèle ou coplanaire avec la première roue 6. Plus particulièrement, le premier axe et l'axe principal AP sont confondus.The indicator plate 7 protrudes radially with respect to a main axis AP, and is parallel or coplanar with the first wheel 6. More particularly, the first axis and the main axis AP coincide.

Selon l'invention, le mécanisme d'affichage 1 comporte une bielle 8, qui est articulée à une première extrémité 81 avec un chariot 9 monté coulissant sur le plateau d'indicateur 7 et lequel chariot 9 porte de préférence une aiguille rétractable 10, ou constitue une telle aiguille, ou encore un afficheur d'une autre forme. Une deuxième extrémité 82 de la bielle 8 est pivotée, ou bien sur un pivot fixe 12 au niveau du pont 11 dans le cas du premier mode de réalisation, ou bien sur un pivot mobile que comporte un mobile d'élongation entraîné directement ou indirectement par la bascule 3, dans le deuxième et le troisième mode de réalisation.According to the invention, the display mechanism 1 comprises a connecting rod 8, which is articulated at a first end 81 with a carriage 9 slidably mounted on the indicator plate 7 and which carriage 9 preferably carries a retractable needle 10, or constitutes such a needle, or a display of another form. A second end 82 of the connecting rod 8 is pivoted, either on a fixed pivot 12 at the level of the bridge 11 in the case of the first embodiment, or on a movable pivot that includes an elongation wheel driven directly or indirectly by flip-flop 3, in the second and the third embodiment.

Dans le premier mode de réalisation des figures 1 à 7, la première roue d'orientation angulaire 6 entraîne de façon synchrone le plateau d'indicateur 7, directement ou au travers d'un rouage, et en la deuxième extrémité de la bielle 8 est pivotée sur un pivot fixe 12 au niveau du pont 11.In the first embodiment of the Figures 1 to 7 , the first angular orientation wheel 6 synchronously drives the indicator plate 7, directly or through a gear train, and at the second end of the connecting rod 8 is pivoted on a fixed pivot 12 at the level of the bridge 11 .

Dans une application particulière, et tel qu'illustré par les figures 1 à 14, le mécanisme d'affichage 1 est rétrograde.In a particular application, and as illustrated by the Figures 1 to 14 , the display mechanism 1 is retrograde.

Dans une réalisation particulière, la came 2 est une came limaçon comportant, sur son rayon maximal, un bec 21 dont le passage commande un saut du palpeur 4 en retour sur le rayon minimal de la came 2. Et le mécanisme d'affichage 1 comporte encore, pivoté sur le pont 11, un troisième râteau 25 qui est rappelé par des moyens de rappel élastique primaires 26, et qui engrène avec la première roue d'orientation angulaire 6 pour le rattrapage de jeu lors de son rappel rétrograde lors du saut du palpeur 4 en retour sur le rayon minimal de la came 2.In a particular embodiment, the cam 2 is a snail cam having, on its maximum radius, a spout 21 whose passage controls a jump of the probe 4 back on the minimum radius of the cam 2. And the display mechanism 1 comprises again, pivoted on the bridge 11, a third rake 25 which is recalled by primary resilient biasing means 26, and which meshes with the first angular orientation wheel 6 for the play catching during its retrograde recall on the jump of the feeler 4 back on the minimum radius of the cam 2.

On comprend bien que le profil de la came est adapté à la trajectoire qu'on souhaite réaliser, l'exemple ci-dessus étant dédié à un affichage rétrograde dans un secteur angulaire donné. Naturellement, d'autres profils sont réalisables, pour d'autres trajectoires, par exemple une came-coeur qui fait parcourir une trajectoire elliptique aller-retour à la même vitesse, ou autre.It is understood that the profile of the cam is adapted to the path that is desired, the above example being dedicated to a retrograde display in a given angular sector. Of course, other profiles are feasible, for other paths, for example a cam-heart that travels an elliptical path back and forth at the same speed, or other.

De préférence, pour éviter les balourds, le plateau d'indicateur 7 comporte au moins un premier contrepoids 71 qui est agencé pour équilibrer, par rapport à l'axe principal AP, l'ensemble que forme le plateau d'indicateur 7, avec le chariot 9 à mi-course de celui-ci, et avec l'aiguille rétractable 10.Preferably, to avoid unbalance, the indicator plate 7 comprises at least a first counterweight 71 which is arranged to balance, with respect to the main axis AP, the assembly that forms the indicator plate 7, with the 9 carriage halfway of it, and with the retractable needle 10.

Sur la variante non limitative illustrée par les figures, et relative à une trajectoire elliptique de l'extrémité de l'aiguille 10, la came 2 tourne en sens horaire. En tournant, la came 2 lève le premier râteau 5, qui est contraint contre la came 2 par un ressort de rappel non représenté. Le plateau d'indicateur 7 est ici, non limitativement, solidaire de la première roue d'orientation angulaire 6, et est donc entrainé par le premier râteau 5. En tournant par rapport à l'axe principal AP, le plateau d'indicateur 7 pousse la bielle 8 à sa première extrémité 81 par l'intermédiaire d'un arbre d'articulation. Le chariot 9 est lié à deux arbres qui peuvent coulisser sur le plateau d'indicateur 7, l'un d'eux étant celui d'articulation de la bielle 8. Le centre de rotation de la bielle 8, à sa deuxième extrémité 82, se situe au niveau du pivot fixe 12, et est donc différent de celui du plateau d'indicateur 7 La bielle 8 pousse ou tire donc l'arbre d'articulation situé à sa première extrémité 81, ce qui entraîne le chariot 9, pour respectivement l'élongation ou la rétraction de l'aiguille 10. L'aiguille 10 coulisse ainsi, pour s'allonger ou se rétracter, tout en pivotant par rapport à l'axe principal AP.On the nonlimiting variant illustrated by the figures, and relating to an elliptical trajectory of the end of the needle 10, the cam 2 rotates clockwise. By turning, the cam 2 raises the first rake 5, which is forced against the cam 2 by a return spring not shown. The indicator plate 7 is here, without limitation, integral with the first wheel of angular orientation 6, and is therefore driven by the first rake 5. By turning relative to the main axis AP, the indicator plate 7 push the rod 8 at its first end 81 via a hinge shaft. The carriage 9 is connected to two shafts which can slide on the indicator plate 7, one of them being that of articulation of the connecting rod 8. The center of rotation of the connecting rod 8, at its second end 82, is located at the fixed pivot 12, and is different from that of the indicator plate 7 The rod 8 pushes or pulls the hinge shaft located at its first end 81, which causes the carriage 9, respectively the elongation or retraction of the needle 10. The needle 10 slides thus, to lengthen or retract, while pivoting with respect to the main axis AP.

La cinématique des figures 1 à 5 décrit une succession de positions intermédiaires, dans une variante rétrograde où l'extrémité de l'aiguille 10 suit le bord elliptique d'un guichet 110:

  • la figure 1 montre la position initiale, en rétraction maximale de l'ensemble aiguille, immédiatement après le saut du palpeur 4 depuis le bec 21 sur la surface de rayon minimal de la came 2 ;
  • la figure 2 montre l'allongement de l'ensemble aiguille après une rotation de 30° du plateau d'indicateur 7 ;
  • la figure 3 montre l'allongement maximal de l'ensemble aiguille, à mi-parcours angulaire ;
  • la figure 4 montre la rétraction de l'ensemble aiguille après une rotation de 90° du plateau d'indicateur 7 ;
  • la figure 5 montre la position finale, en rétraction maximale de l'ensemble aiguille, quand le palpeur 4 est sur la surface de rayon maximal de la came 2, au niveau du bec 21, immédiatement avant le saut du palpeur 4.
The kinematics of Figures 1 to 5 describes a succession of intermediate positions, in a retrograde variant where the end of the needle 10 follows the elliptical edge of a window 110:
  • the figure 1 shows the initial position, in maximum retraction of the needle assembly, immediately after the jump of the probe 4 from the spout 21 on the minimum radius surface of the cam 2;
  • the figure 2 shows the elongation of the needle assembly after a 30 ° rotation of the indicator plate 7;
  • the figure 3 shows the maximum elongation of the needle assembly at angular half-cycle;
  • the figure 4 shows the retraction of the needle assembly after a 90 ° rotation of the indicator plate 7;
  • the figure 5 shows the final position, in maximum retraction of the needle assembly, when the feeler 4 is on the surface of maximum radius of the cam 2, at the spout 21, immediately before the jump of the probe 4.

Dans le deuxième mode de réalisation des figures 8 à 14, la première roue d'orientation angulaire 6 entraîne le plateau d'indicateur 7 de façon synchrone directement ou au travers d'un rouage, et la bascule 3 porte, parallèlement au premier râteau 5, un deuxième râteau 15 qui engrène avec une deuxième roue d'élongation 16 que comporte également le mécanisme d'affichage 1. Cette deuxième roue d'élongation 16 est synchrone avec un levier 18 constituant un tel mobile d'élongation, et qui porte un pivot de levier 13 constituant le pivot mobile d'articulation de la bielle 8, la deuxième roue 16 étant parallèle ou coplanaire avec le levier 18. Plus particulièrement, la deuxième roue 16 est solidaire du levier 18.In the second embodiment of the Figures 8 to 14 , the first angular orientation wheel 6 drives the indicator plate 7 synchronously directly or through a train, and the lever 3 carries, parallel to the first rake 5, a second rake 15 which meshes with a second wheel the second elongation wheel 16 is synchronous with a lever 18 constituting such a mobile elongation, and which carries a lever pivot 13 constituting the movable pivot articulation of the rod 8, the second wheel 16 being parallel or coplanar with the lever 18. More particularly, the second wheel 16 is integral with the lever 18.

Dans ce deuxième mode de réalisation, le mécanisme d'affichage 1 comporte encore, pivoté sur le pont 11, un quatrième râteau 27 rappelé par des moyens de rappel élastique secondaires, qui peuvent être confondus avec les moyens de rappel élastique primaires 26 comme dans le cas des figures 8 à 14, et ce quatrième râteau 27 engrène avec la deuxième roue d'élongation 16 pour le rattrapage de jeu lors de son rappel rétrograde lors du saut du palpeur 4 en retour sur le rayon minimal de la came 2.In this second embodiment, the display mechanism 1 further comprises, pivoted on the bridge 11, a fourth rake 27 recalled by secondary elastic return means, which can be confused with the primary elastic return means 26 as in the case of Figures 8 to 14 and this fourth rake 27 meshes with the second elongation wheel 16 for the play catching during its retrograde return when the probe 4 is jumped back on the minimum radius of the cam 2.

De préférence, pour éviter les balourds, dans le deuxième mode de réalisation, le mobile d'élongation comporte de préférence au moins un deuxième contrepoids 72 qui est agencé pour équilibrer, par rapport à l'axe principal AP, l'ensemble que forme le levier 18 avec le pivot mobile 13 et avec la bielle 8.Preferably, to avoid unbalance, in the second embodiment, the elongation mobile preferably comprises at least a second counterweight 72 which is arranged to balance, with respect to the main axis AP, the assembly that forms the lever 18 with the mobile pivot 13 and with the connecting rod 8.

La cinématique est similaire à celle du premier mode, mais cette fois la deuxième extrémité 82 de la bielle 8 est pivotée en un point mobile, qui est porté par le levier 18.The kinematics is similar to that of the first mode, but this time the second end 82 of the connecting rod 8 is pivoted to a moving point, which is carried by the lever 18.

La came 2 tourne en sens horaire. En tournant, la came 2 lève le premier râteau 5, qui est contraint contre la came 2 par un ressort de rappel non représenté. Le plateau d'indicateur 7 est solidaire de la première roue d'orientation angulaire 6, et est donc entraîné par le premier râteau 5. Le deuxième râteau 15, qui est solidaire du premier râteau 5, entraîne la deuxième roue d'élongation 16, qui elle-même entraine la bielle 8 par l'intermédiaire du levier 18 solidaire de la deuxième roue d'élongation 16. Le chariot 9 est lié à deux arbres qui peuvent coulisser sur le plateau d'indicateur 7. Le chariot 9 et le levier 18 ne tournent pas à la même vitesse, en raison du rapport d'engrenage différent, le plateau d'indicateur 7 pousse alors la bielle 8 à sa première extrémité par l'intermédiaire de l'arbre, poussant ou tirant cet arbre et donc le chariot 9. L'aiguille 10 coulisse donc pour s'allonger ou se rétracter, tout en pivotant par rapport à l'axe principal AP.Cam 2 rotates clockwise. By turning, the cam 2 raises the first rake 5, which is forced against the cam 2 by a return spring not shown. The indicator plate 7 is integral with the first angular orientation wheel 6, and is thus driven by the first rake 5. The second rake 15, which is integral with the first rake 5, drives the second elongation wheel 16, which itself drives the rod 8 via the lever 18 secured to the second elongation wheel 16. The carriage 9 is connected to two shafts which can slide on the indicator plate 7. The carriage 9 and the lever 18 do not rotate at the same speed, because of the different gear ratio, the indicator plate 7 then pushes the rod 8 at its first end through the shaft, pushing or pulling this shaft and thus the carriage 9. The needle 10 thus slides to lengthen or retract, while pivoting relative to the main axis AP.

La cinématique des figures 8 à 12 décrit une succession de positions intermédiaires, dans une variante rétrograde où l'extrémité de l'aiguille 10 suit le bord elliptique d'un guichet 110:

  • la figure 8 montre la position initiale, en rétraction maximale de l'ensemble aiguille, immédiatement après le saut du palpeur 4 depuis le bec 21 sur la surface de rayon minimal de la came 2 ;
  • la figure 9 montre l'allongement de l'ensemble aiguille après une rotation de 30° du plateau d'indicateur 7 ;
  • la figure 10 montre l'allongement maximal de l'ensemble aiguille, à mi-parcours angulaire ;
  • la figure 11 montre la rétraction de l'ensemble aiguille après une rotation de 90° du plateau d'indicateur 7 ;
  • la figure 12 montre la position finale, en rétraction maximale de l'ensemble aiguille, quand le palpeur 4 est sur la surface de rayon maximal de la came 2, au niveau du bec 21, immédiatement avant le saut du palpeur 4.
The kinematics of Figures 8 to 12 describes a succession of intermediate positions, in a retrograde variant where the end of the needle 10 follows the elliptical edge of a window 110:
  • the figure 8 shows the initial position, in maximum retraction of the needle assembly, immediately after the jump of the probe 4 from the spout 21 on the minimum radius surface of the cam 2;
  • the figure 9 shows the elongation of the needle assembly after a 30 ° rotation of the indicator plate 7;
  • the figure 10 shows the maximum elongation of the needle assembly at angular half-cycle;
  • the figure 11 shows the retraction of the needle assembly after a 90 ° rotation of the indicator plate 7;
  • the figure 12 shows the final position, in maximum retraction of the needle assembly, when the feeler 4 is on the surface of maximum radius of the cam 2, at the spout 21, immediately before the jump of the probe 4.

De la même façon, dans chacun des modes décrits ici, la bielle 8 comporte de préférence un troisième contrepoids 83 d'équilibrage.In the same way, in each of the modes described here, the connecting rod 8 preferably comprises a third balancing counterweight 83.

Un troisième mode utilise un différentiel capable de gérer plusieurs vitesses. Il s'agit d'un mécanisme à différentiel avec bielle articulée sur une cage de différentiel, dont la combinaison des deux entrées, lesquelles sont alimentées par un râteau palpant une came ou par le mouvement, permet à la pointe de l'aiguille de suivre une trajectoire géométrique quelconque mais imposée par le profil et la vitesse de rotation de la came. En effet, si par exemple la came est ovale et tourne à la même vitesse que l'aiguille, celle-ci suit une trajectoire elliptique ; si la came tourne à une vitesse multiple entière de celle de l'aiguille, on obtient une trajectoire multilobée de l'aiguille.A third mode uses a differential that can handle multiple speeds. It is a differential mechanism with a connecting rod connected to a differential cage, whose combination of the two inputs, which are fed by a rake palpating a cam or by the movement, allows the tip of the needle to follow an arbitrary geometric trajectory imposed by the profile and the speed of rotation of the cam. Indeed, if for example the cam is oval and rotates at the same speed as the needle, it follows an elliptical trajectory; if the cam rotates at a multiple speed integral with that of the needle, a multilobed trajectory of the needle is obtained.

Associé au système de double râteau, ce différentiel permet d'afficher une grande variété de trajectoires géométriques. La première entrée du différentiel est directement liée au mouvement (un tour par heure pour un affichage des minutes, un tour par 12 heures pour un affichage des heures, etc...). La deuxième entrée est liée à un râteau qui palpe une came. La sortie du différentiel somme les vitesses des deux entrées et fait tourner la bielle. Finalement l'allongement de l'aiguille dépend directement de la forme de la came. Par exemple une came en coeur permet à l'aiguille de suivre un ovale : lors de la montée de la came, la bielle va plus vite que le plateau sur 180°, allongement et rétractation de l'aiguille sur 180°; puis descente de la came où la bielle va moins vite que le plateau sur 180° et retrouve sa position initiale, allongement et rétractation de l'aiguille sur 180°Combined with the double rake system, this differential allows you to display a wide variety of geometric trajectories. The first differential input is directly related to the movement (one lap per hour for a minute display, one lap per 12 hours for a display of hours, etc ...). The second entry is linked to a rake that palpates a cam. The output of the differential sums the speeds of the two inputs and turns the connecting rod. Finally the elongation of the needle depends directly on the shape of the cam. For example, a cam in the heart allows the needle to follow an oval: during the rise of the cam, the rod goes faster than the plate 180 °, elongation and retraction of the needle 180 °; then descent of the cam where the rod goes slower than the plate over 180 ° and returns to its initial position, elongation and retraction of the needle on 180 °

Le choix d'un profil de came adéquat permet d'obtenir un parcours géométrique particulier, elliptique, carré, rectangulaire ou autre.The choice of a suitable cam profile makes it possible to obtain a particular geometric, elliptical, square, rectangular or other path.

Plus particulièrement, tel que représenté sur la figure 15, ce troisième mode de réalisation concerne un mécanisme à différentiel, dans lequel la première roue d'orientation angulaire 6 engrène avec un premier mobile 31 qui constitue une première entrée du mécanisme différentiel 30, ou bien constitue elle-même le premier mobile 31 comme dans le cas de la figure.More particularly, as shown on the figure 15 this third embodiment relates to a differential mechanism, in which the first angular orientation wheel 6 meshes with a first mobile 31 which constitutes a first input of the differential mechanism 30, or itself constitutes the first mobile 31 as in FIG. the case of the figure.

Le mécanisme d'affichage 1 comporte un deuxième mobile 32, qui, entraîné directement ou indirectement par une sortie 101 du mouvement 100, ou bien constitué par une telle sortie 101, est synchrone avec la came 2, et qui entraîne le plateau d'indicateur 7.The display mechanism 1 comprises a second mobile 32, which, driven directly or indirectly by an output 101 of the movement 100, or constituted by such an output 101, is synchronous with the cam 2, and which drives the indicator plate 7.

Ce plateau d'indicateur 7 constitue une deuxième entrée du mécanisme différentiel 30.This indicator plate 7 constitutes a second input of the differential mechanism 30.

Ce mécanisme différentiel 30 comporte classiquement une cage de différentiel 35, constituant un tel mobile d'élongation, et qui porte un pivot de cage 36, constituant le pivot mobile d'articulation de la bielle 8.This differential mechanism 30 conventionally comprises a differential cage 35, constituting such an elongation mobile, and which carries a cage pivot 36 constituting the movable hinge pivot of the connecting rod 8.

Le plateau d'indicateur 7 comporte au moins un pivot de satellite 33, qui est porteur d'un satellite 34 engrenant à la fois avec la cage de différentiel 35 et le premier mobile 31, ici guidé dans un guidage 310 du pont 11 ou d'un autre composant de la structure du mouvement 100.The indicator plate 7 comprises at least one satellite pivot 33, which carries a satellite 34 meshing with both the differential cage 35 and the first mobile 31, here guided in a guide 310 of the bridge 11 or another component of the movement structure 100.

Quand un guidage 310 particulier, par exemple en porte-à-faux par le dessous, permet de libérer la face supérieure de la cage de différentiel 35, rien ne s'oppose à la libre rotation de la bielle 8 qui n'interfère alors avec aucun arbre, et un affichage sur 360° est possible. La variante de la figure 15 comporte une portion d'arbre du premier mobile 31 susceptible d'entrer en collision avec la bielle 8, ce qui impose le choix d'un mécanisme rétrograde tel que décrit en détail pour le premier et le deuxième modes.When a particular guide 310, for example cantilevered from below, makes it possible to release the upper face of the differential cage 35, nothing prevents the free rotation of the connecting rod 8, which then does not interfere with no tree, and a 360 ° display is possible. The variant of the figure 15 has a shaft portion of the first movable 31 likely to collide with the rod 8, which requires the choice of a retrograde mechanism as described in detail for the first and second modes.

Ce mécanisme à différentiel peut comporter plusieurs variantes. Notamment, il est possible de bloquer la cage de différentiel 35, pour revenir à un équivalent du premier mode, qui nécessite bien sûr d'avoir un affichage rétrograde. Une autre variante consiste à remplacer le deuxième mobile 32 par un râteau, en prise sur une roue de plateau 70 solidaire du plateau d'indicateur 7, et qui palpe une came entraînée par le mouvement.This differential mechanism may have several variants. In particular, it is possible to lock the differential cage 35 to return to an equivalent of the first mode, which of course requires having a retrograde display. Another variant is to replace the second mobile 32 by a rake, engaged on a plate wheel 70 secured to the indicator plate 7, and which palpates a cam driven by the movement.

On comprend que, sous certaines conditions de passage des composants, le troisième mode à différentiel permet d'obtenir une rotation de l'aiguille sur 360°, le premier râteau 5 de rétrograde des premier et deuxième mode n'est alors plus utile, et seul le deuxième râteau 15, d'allongement, du deuxième mode, est conservé.It will be understood that, under certain conditions of passage of the components, the third differential mode makes it possible to obtain a rotation of the needle over 360 °, the first retrograde rake 5 of the first and second modes is then no longer useful, and only the second rake 15, elongation, of the second mode, is preserved.

Dans les différents modes illustrés, de façon particulière et non limitative, le chariot 9 est mobile selon une direction radiale R par rapport à l'axe principal AP, tel que visible sur les figures.In the various modes illustrated, in a particular and nonlimiting manner, the carriage 9 is movable in a radial direction R with respect to the main axis AP, as visible in the figures.

Dans une réalisation particulière illustrée par les figures 1 à 14, le premier râteau 5 est réglable angulairement, en référence à l'axe de bascule AB, par rapport au palpeur 4. Un premier dispositif de réglage 40 comprend notamment une vis excentrique 42 coopérant avec un oblong 41.In a particular embodiment illustrated by the Figures 1 to 14 , the first rake 5 is angularly adjustable, with reference to the flip-flop axis AB, relative to the feeler 4. A first adjustment device 40 comprises in particular an eccentric screw 42 cooperating with an oblong 41.

Dans une réalisation particulière illustrée par les figures 8 à 14, la deuxième roue d'élongation 16 pivote autour de l'axe principal AP.In a particular embodiment illustrated by the Figures 8 to 14 the second elongation wheel 16 pivots around the main axis AP.

Dans une réalisation particulière du deuxième mode, illustrée par les figures 8 à 14, le premier râteau 5 et le deuxième râteau 15 ont des rayons différents par rapport à l'axe de bascule AB. Plus particulièrement, le deuxième râteau 15 a un rayon plus petit que celui du premier râteau 5.In a particular embodiment of the second mode, illustrated by the Figures 8 to 14 the first rake 5 and the second rake 15 have different radii with respect to the flip-flop axis AB. More particularly, the second rake 15 has a radius smaller than that of the first rake 5.

Dans une réalisation particulière illustrée par les figures 8 à 14, le deuxième râteau 15 est réglable angulairement, par rapport à l'axe de bascule AB, par rapport au premier râteau 5. Un deuxième dispositif de réglage 50 comprend notamment une vis excentrique 52 coopérant avec un oblong 51.In a particular embodiment illustrated by the Figures 8 to 14 , the second rake 15 is angularly adjustable, with respect to the rocker axis AB, relative to the first rake 5. A second adjusting device 50 comprises in particular an eccentric screw 52 cooperating with an oblong 51.

L'invention concerne encore un mouvement d'horlogerie 100 comportant au moins un tel mécanisme d'affichage 1, entraîné par une sortie 101 ou similaire.The invention also relates to a watch movement 100 comprising at least one such display mechanism 1, driven by an output 101 or the like.

L'invention concerne une montre 200 comportant un tel mouvement d'horlogerie 100, et/ou comportant au moins un tel mécanisme d'affichage 1.The invention relates to a watch 200 comprising such a watch movement 100, and / or comprising at least one such display mechanism 1.

L'avantage d'un afficheur rétractable selon l'invention est d'autoriser une grande diversité d'affichages, avec des trajectoires particulières, dans des zones particulières du cadran de la montre.The advantage of a retractable display according to the invention is to allow a wide variety of displays, with particular trajectories, in particular areas of the dial of the watch.

Dans l'affichage de type rétrograde préféré, le râteau du mécanisme rétrograde est utilisé pour commander à la fois l'orientation angulaire et l'extension radiale de l'aiguille. Ce râteau est animé d'un mouvement alternatif. Le seul entraînement continu est celui de la came en limaçon, il n'est donc pas nécessaire d'avoir un entraînement continu par la roue de centre, ce qui facilite la topologie d'implantation dans la boîte de la montre. L'invention permet de s'adapter à toute forme et dimension de boîte, en particulier aux boîtes ovales appréciées pour les montres dame.In the preferred retrograde type display, the rake of the retrograde mechanism is used to control both the angular orientation and the radial extension of the needle. This rake is animated by an alternating movement. The only continuous drive is that of the snail cam, so it is not necessary to have a continuous drive by the center wheel, which facilitates the implantation topology in the watch case. The invention makes it possible to adapt to any shape and size of box, in particular to the oval boxes that are appreciated for ladies' watches.

Les entraîneurs de la bielle et de l'aiguille rétrograde sont coaxiaux, ce qui assure un positionnement parfait des composants.The drivers of the connecting rod and the retrograde needle are coaxial, which ensures a perfect positioning of the components.

Dans le premier mode, la bielle a un pivotement direct sur le pont, par roulement à bille, ou empierrage, ou autre, de dimensionnement libre et non limité par l'encombrement de composants mobiles. Le premier râteau peut être désolidarisé du palpeur de came pour le régale de la position initiale rétrograde. Si le pivot de bielle est réalisé au niveau d'un pont mobile, non illustré par les figures, il est, encore, possible de régler l'allongement initial de l'aiguille. Le faible nombre de composants en pivotement permet de minimiser le jeu résiduel. L'existence d'un râteau unique de rattrapage de jeux permet de contraindre l'ensemble du mécanisme, et de limiter la sensibilité de l'aiguille aux chocs, en particulier de limiter sa vibration. Le peu de composants superposés autorise une épaisseur totale faible de ce mécanisme d'affichage.In the first mode, the connecting rod has a direct pivoting on the bridge, by ball bearing, or rocking, or other, of free design and not limited by the bulk of moving components. The first rake can be disconnected from the cam follower for regal retrograde initial position. If the connecting pin is made at a moving bridge, not shown in the figures, it is still possible to adjust the initial elongation of the needle. The low number of pivoting components makes it possible to minimize the residual clearance. The existence of a single catch-up rake makes it possible to constrain the entire mechanism, and to limit the sensitivity of the needle to impacts, in particular to limit its vibration. The few superimposed components allow a low total thickness of this display mechanism.

Dans le deuxième mode, les entraîneurs de bielle et de l'aiguille rétrograde sont coaxiaux, ce qui assure aussi un positionnement parfait des composants. Chacun des deux râteaux gère un mouvement particulier de l'aiguille: le premier râteau gère la rotation, et le deuxième râteau gère la translation. Il est donc possible et facile, grâce à des excentriques, de régler la position et l'allongement initiaux de l'aiguille, contrairement aux affichages rétrogrades de l'art antérieur, où l'indexage de l'affichage se fait lors de l'opération d'aiguillage, par une manipulation délicate et unique. L'entraînement en rotation de la bielle permet d'avoir un paramètre supplémentaire pour le dimensionnement de l'allongement de l'aiguille. Les râteaux de rattrapage de jeux agissant sur la première roue d'orientation angulaire et la deuxième roue d'élongation permettent de contraindre l'aiguille, et de fortement limiter la vibration de l'aiguille aux chocs.In the second mode, the rod drivers and the retrograde needle are coaxial, which also ensures perfect positioning of the components. Each of the two rakes manages a particular movement of the needle: the first rake manages the rotation, and the second rake manages the translation. It is therefore possible and easy, thanks to eccentrics, to adjust the initial position and elongation of the needle, unlike the retrograde displays of the prior art, where the indexing of the display is done at the same time. switching operation, by delicate and unique handling. The rotational drive of the connecting rod allows to have an additional parameter for the dimensioning of the elongation of the needle. The play catch rakes acting on the first angular orientation wheel and the second elongation wheel can constrain the needle, and strongly limit the vibration of the needle shock.

Dans chacun des modes de réalisation de l'invention, la forte inertie de l'aiguille lors de son retour en position peut être utilisée pour entraîner un disque sur sautoir. Par exemple cette aiguille affiche la minute, et l'heure est affichée sur un disque sautant. Lors du retour de l'aiguille des minutes, celle-ci vient taper sur un entraîneur des heures qui fait sauter les heures, l'inertie de l'aiguille des minutes aidant le saut des heures, ce qui rend ainsi possible, et facilite grandement, la synchronisation des sauts des affichages.In each of the embodiments of the invention, the high inertia of the needle during its return to position can be used to drive a disc on jumper. For example, this hand displays the minute, and the time is displayed on a jumping disc. When the minute hand returns, it hits an hour coach that makes the hours jump, the inertia of the minute hand helping the jumping hours, which makes it possible, and greatly facilitates , the synchronization of the jumps of the displays.

L'affichage rétractable et rétrograde selon l'invention est modulaire.The retractable and retrograde display according to the invention is modular.

On remarque, encore, que le système bielle-manivelle permet de s'affranchir de systèmes à chemins de cames fraisés dans un pont ou une platine, et donc des problèmes connus de bavures ou de précision de fraisage.It should be noted, again, that the connecting rod-crank system makes it possible to dispense with systems with cam paths milled in a bridge or a plate, and thus known problems of burrs or milling precision.

Claims (17)

  1. Timepiece display mechanism (1) including, arranged on a bridge (11), a cam (2) arranged to be driven by a time base, and a lever (3) pivoting about a lever axis (AB) and including on the one hand, a feeler member (4) following the contour of said cam (2) under the action of elastic return means and on the other hand, a first rack (5) meshing with a first angular orientation wheel (6) for the rotational driving thereof about a first axis (A1), said first angular orientation wheel (6) driving an indicator plate (7) synchronously or via a differential mechanism (30), said indicator plate (7) projecting radially with respect to a main axis (AP) and being parallel to or coplanar with said first wheel (6), characterized in that said display mechanism (1) includes a connecting rod (8) articulated at a first end (81) to a carriage (9) mounted to slide on said indicator plate (7) and carrying a retractable hand (10), a second end (82) of said connecting rod (8) being pivoted, either on a fixed pivot (12) on said bridge (11), or on a movable pivot comprised in an elongation wheel set directly or indirectly driven by said lever (3).
  2. Display mechanism (1) according to claim 1, characterized in that said first angular orientation wheel (6) synchronously drives said indicator plate (7), directly or via a gear train, and in that said second end of said connecting rod (8) is pivoted on a said fixed pivot (12) on said bridge (11).
  3. Display mechanism (1) according to claim 1, characterized in that said first angular orientation wheel (6) synchronously drives said indicator plate (7) directly or via a gear train, and in that said lever (3) carries, parallel to said first rack (5), a second rack (15) meshing with a second elongation wheel (16) synchronous with a lever element (18) forming a said elongation wheel set and carrying a lever pivot (13) forming a said movable articulation wheel set for said connecting rod (8), said second wheel (16) being parallel to or coplanar with said lever element (18).
  4. Display mechanism (1) according to claim 1, characterized in that said first angular orientation wheel (6) meshes with a first wheel set (31) which forms a first input of said differential mechanism (30) or forms said first wheel set (31), in that said display mechanism (1) includes a second wheel set (32) synchronous with said cam (2) and which drives said indicator plate (7) which forms a second input of said differential mechanism (30), which includes a differential cage (35) forming a said elongation wheel set and carrying a cage pivot (36) forming said movable articulation pivot for said connecting rod (8).
  5. Display mechanism (1) according to claim 4, characterized in that said indicator plate (7) includes at least one planetary pivot (33) carrying a planetary wheel (34) meshing both with said differential cage (35) and said first wheel set (31).
  6. Display mechanism (1) according to any of claims 1 to 5, characterized in that said display mechanism (1) is retrograde, and in that said cam (2) is a snail cam including, on the maximum radius thereof, a beak (21), the passage of which causes said feeler member (4) to jump back onto the minimum radius of said cam (2), and in that said display mechanism (1) includes, pivoted on said bridge (11), a third rack (25) returned by primary elastic return means (26) and meshing with said first angular orientation wheel (6) to take up play during the retrograde return thereof upon said jump of said feeler member (4) back onto the minimum radius of said cam (2).
  7. Display mechanism (1) according to claims 3 and 6, characterized in that said display mechanism (1) includes, pivoted on said bridge (11), a fourth rack (27) returned by secondary elastic return means (28) and meshing with said second elongation wheel (16) to take up play during the retrograde return thereof upon said jump of said feeler member (4) back onto the minimum radius of said cam (2).
  8. Display mechanism (1) according to any of claims 1 to 7, characterized in that said carriage (9) is movable in a radial direction (R) with respect to said main axis (AP).
  9. Display mechanism (1) according to any of claims 1 to 8, characterized in that said indicator plate (7) includes at least a first counterweight (71), arranged to balance, with respect to said main axis (AP), the assembly formed by said indicator plate (7) with said carriage (9) at the midpoint of the latter's travel, and with said retractable hand (10).
  10. Display mechanism (1) according to any of claims 1 to 9, characterized in that said first rack (5) is angularly adjustable, with reference to said lever axis (AB), with respect to said feeler member (4).
  11. Display mechanism (1) according to claim 3 or 7, characterized in that said second elongation wheel (16) pivots about said main axis (AP).
  12. Display mechanism (1) according to claim 3, characterized in that said first rack (5) and said second rack (15) have different radii with respect to said lever axis (AB).
  13. Display mechanism (1) according to claim 12, characterized in that said second rack (15) has a smaller radius than that of said first rack (5).
  14. Display mechanism (1) according to any of claims 3, 12, or 13, characterized in that said second rack (15) is angularly adjustable, with respect to said lever axis (AB), with respect to said first rack (5).
  15. Display mechanism (1) according claim 3, characterized in that said elongation wheel set includes at least a second counterweight (72) arranged to balance, with respect to said main axis (AP), the assembly formed by said lever element (18) with said movable pivot (13) and with said connecting rod (8).
  16. Timepiece movement (100) including at least one display mechanism (1) according to any of claims 1 to 15.
  17. Watch (200) including a timepiece movement (100) according to claim 16, and/or including at least one display mechanism (1) according to any of claims 1 to 15.
EP16156269.9A 2016-02-18 2016-02-18 Retrograde clock display with retractable hand Active EP3208665B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP16156269.9A EP3208665B1 (en) 2016-02-18 2016-02-18 Retrograde clock display with retractable hand
US15/397,219 US10222749B2 (en) 2016-02-18 2017-01-03 Retrograde timepiece display with a retractable hand
KR1020170006995A KR101946136B1 (en) 2016-02-18 2017-01-16 Retrograde timepiece display with a retractable hand
JP2017017550A JP6340099B2 (en) 2016-02-18 2017-02-02 Retrograde timer display with retractable needle
RU2017105051A RU2017105051A (en) 2016-02-18 2017-02-16 RETAILING CLOCK INDICATOR WITH EXTENDABLE ARROW
CN201710085721.0A CN107092180B (en) 2016-02-18 2017-02-17 Inverse jump watch indication mechanism with telescopic pointer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16156269.9A EP3208665B1 (en) 2016-02-18 2016-02-18 Retrograde clock display with retractable hand

Publications (2)

Publication Number Publication Date
EP3208665A1 EP3208665A1 (en) 2017-08-23
EP3208665B1 true EP3208665B1 (en) 2019-01-02

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EP16156269.9A Active EP3208665B1 (en) 2016-02-18 2016-02-18 Retrograde clock display with retractable hand

Country Status (6)

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US (1) US10222749B2 (en)
EP (1) EP3208665B1 (en)
JP (1) JP6340099B2 (en)
KR (1) KR101946136B1 (en)
CN (1) CN107092180B (en)
RU (1) RU2017105051A (en)

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RU2017105051A (en) 2018-08-16
EP3208665A1 (en) 2017-08-23
KR20170097550A (en) 2017-08-28
JP6340099B2 (en) 2018-06-06
CN107092180A (en) 2017-08-25
JP2017146301A (en) 2017-08-24
US10222749B2 (en) 2019-03-05
US20170242400A1 (en) 2017-08-24
KR101946136B1 (en) 2019-02-08
CN107092180B (en) 2019-04-19

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