EP3798740B1 - Uhr-anzeigemechanismus mit mehrspuriger führung - Google Patents

Uhr-anzeigemechanismus mit mehrspuriger führung Download PDF

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Publication number
EP3798740B1
EP3798740B1 EP19199581.0A EP19199581A EP3798740B1 EP 3798740 B1 EP3798740 B1 EP 3798740B1 EP 19199581 A EP19199581 A EP 19199581A EP 3798740 B1 EP3798740 B1 EP 3798740B1
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EP
European Patent Office
Prior art keywords
roller
trajectory
component
positioning
rolling track
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Active
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EP19199581.0A
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English (en)
French (fr)
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EP3798740A1 (de
Inventor
Cédric Reymond
Alain Delizee
Robin Rusterholz
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Blancpain SA
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Blancpain SA
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Priority to EP19199581.0A priority Critical patent/EP3798740B1/de
Publication of EP3798740A1 publication Critical patent/EP3798740A1/de
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    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/02—Back-gearing arrangements between gear train and hands
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/06—Dials
    • G04B19/08—Geometrical arrangement of the graduations
    • G04B19/082—Geometrical arrangement of the graduations varying from the normal closed scale
    • 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
    • G04B19/22—Arrangements for indicating different local apparent times; Universal time pieces
    • G04B19/228—Arrangements for indicating different local apparent times; Universal time pieces with linear time graduation

Definitions

  • the invention relates to a mechanism for positioning and adjusting a mobile clockwork component in a reciprocating movement along a limited stroke.
  • the invention also relates to a timepiece display mechanism, comprising such a positioning and adjustment mechanism.
  • the invention also relates to a timepiece movement comprising at least one such display mechanism, and/or such a positioning and adjustment mechanism.
  • the invention also relates to a watch comprising such a movement, and/or at least such a display mechanism, and/or such a positioning and adjustment mechanism.
  • the invention relates to the field of timepiece display mechanisms, and in particular complication display mechanisms, in particular for watches.
  • the display function in watchmaking is essential, because it defines the physiognomy of the watch, personalizes it, and strongly influences the purchasing decision.
  • Displays with concentric discs are known, which are readable, at least as long as there are few time values to display, for example hour and minute; the situation becomes more complicated in the case where three displays are considered distinct or more, due to readability which decreases as the number of discs increases.
  • the documents FR1034691A And FR1242819A describe mechanisms for positioning and adjusting watch components in reciprocating movements, according to the preamble of claim 1.
  • the invention proposes to provide an original display which remains very readable, and which allows high customization, in particular due to particular shapes or arrangements specific to a given watch brand, by running a very readable display along a trajectory of particular shape.
  • This trajectory can be complex, and be traversed by the display in different directions, over different portions of the total trajectory.
  • the invention relates to a mechanism for positioning and adjusting a mobile clockwork component in a reciprocating movement along a limited stroke, according to claim 1.
  • Preferred embodiments are defined in the dependent claims. .
  • the invention also relates to a timepiece display mechanism, comprising such a positioning and adjustment mechanism.
  • the invention also relates to a timepiece movement comprising at least one such display mechanism, and/or such a positioning and adjustment mechanism.
  • the invention also relates to a watch comprising such a movement, and/or at least such a display mechanism, and/or such a positioning and adjustment mechanism.
  • the invention relates to a clockwork display mechanism 1, arranged to produce a complex display by allowing the movement of at least one mobile on a plurality of elementary tracks, constituting together end to end a global track, which this mechanism comprises. display 1.
  • the display mechanism 1 conventionally includes a first driving wheel set 2, which is arranged to be driven by a clock movement or by a drive mechanism.
  • This first drive mobile 2 comprises first drive means 3, which are arranged to cause a portable carriage 4 carrying a display 5 to advance along at least part of a first trajectory T1 defined by first guide means 6.
  • first guide means 6 are arranged to cooperate in a complementary manner with complementary guide means 7 that the sliding carriage 4 comprises.
  • complementary guide means 7 can be constituted by a suitably shaped end of a shaft 41 that portable trolley 4, or, as seen on the figure 2 , by guide rollers 42, 43, mounted free to rotate on this sliding carriage 4, or other.
  • This portable trolley 4 is arranged to drive or to carry a display 5. In the non-limiting variant illustrated by the figures, the portable trolley 4 directly carries such a display 5.
  • the display mechanism 1 comprises at least one second drive wheel 20, which is arranged to be driven by the first drive wheel 2, or by a clock movement or by a drive mechanism.
  • this second mobile drive 20 comprises second drive means 30, which are arranged to advance a trolley, and in particular the trolley 4, according to at least a part of a second trajectory T2 defined by second guide means 60.
  • These second guide means 60 are arranged to cooperate in a complementary manner with complementary guide means of a portable trolley, and in particular with complementary guide means 7 of portable trolley 4.
  • the second trajectory T2 is secant or tangent at at least one point with the first trajectory T1.
  • the figures illustrate an application where the trolley 4 circulates successively on all or part of the first trajectory T1, and on all or part of the second trajectory T2. Naturally, it is possible to juxtapose a greater number of trajectories, to cause the display 5 to circulate along a complex curve, according to the principles described below.
  • the first drive means 3, and the second drive means 30, each comprise at least one elastic blade 31, respectively 310, which is arranged to hold without play a shaft 41 that comprises the sliding carriage 4, when the sliding carriage 4 circulates on only one of the first trajectory T1 and second trajectory T2.
  • This at least one elastic blade 31, 310 is further arranged to allow the release of this shaft 41, for a transfer of the trolley 4 from the first trajectory T1 to the second trajectory T2, or vice versa, at a junction zone T0 constituting the interface between the first trajectory T1 and the second trajectory T2.
  • THE figures 1 to 4 illustrate, in a non-limiting way, an example in which such a trolley 4 is driven along a predefined trajectory in the shape of a figure eight: this figure eight constitutes the overall track, which results from the juxtaposition in external tangency, at the level of the junction zone T0, a first substantially circular track T1, which comprises the first guide means 6, and a second substantially circular track T2, which comprises the second guide means 60.
  • These first guide means 6 and second guide means 60 may in particular comprise at least one guide groove machined in a plate 900 or a bridge, as shown in the figures, or at least one projecting rail, integrated or attached to this plate or this bridge, or even a combination of such rails and /or grooves.
  • the first drive means 3, and/or the second drive means 30, comprise a fork comprising at least one elastic blade 31, 310.
  • the fork illustrated by the figures comprises a first lip 32 and a second lip 33 secured to the mobile drive 2, 20, concerned, and between which extends an elastic strip 31, 310, separated from the lips by cutouts 34, 35; this elastic blade 31, 310, can be integral with the drive wheel set 2 as in the figures, or be attached, such as a leaf spring fixed cantilevered on the drive wheel set 2, 20.
  • One of the lips 32, 33 comprises a first support lip 37, arranged to clamp the shaft 41 of the sliding carriage 4 in the manner of a clamp, in cooperation with a second support lip 36 that comprises the elastic blade 31, 310 at its distal end .
  • the bearing lip of the first support beak 37 advantageously comprises at least one boss 38, arranged to limit the angular travel of the elastic blade 31, 310.
  • the elasticity of the elastic blade 31, 310 is sufficient to allow an angular travel allowing the shaft 41 to escape this fork, when it arrives in the junction zone T0, and its transfer to an antagonist fork.
  • the mechanism in fact comprises two such forks with elastic blades, rotating in opposite directions, one fixed to the first mobile drive 2, the other to the second mobile drive 20.
  • the shaft 41 of the sliding carriage 4 is pinched by one of the forks during its travel on one of the trajectories T1, T2, and is pressed against the outside of the corresponding guide groove, thanks to the V-shape of the fork, and is driven by the latter.
  • the two forks are synchronized so as to overlap at the level of the junction zone T0, when the sliding carriage 4 has finished its course on one of the trajectories, here a rotation according to a circle, and returns to the junction zone T0 between the first trajectory T1 to the second trajectory T2, for example at the center of the movement as illustrated.
  • the shaft 41 of the sliding carriage 4 is transferred from one fork to another, thanks to a transfer mechanism with a slider system which will be explained later, and can then be driven by the second fork for its race on the second trajectory T2, here a lap of a second circle.
  • FIG. 3 shows the mechanism just after the transfer, when the fork of the second mobile drive 20 grips the shaft 41 of the sliding carriage 4, with the fork of the first mobile drive 2 which is empty and has just released this shaft 41; we see on this picture 3 , above the sliding carriage 4, a slider 8 which is movable substantially in the direction of tangency, in a junction zone T0, between the first trajectory T1 and the second trajectory T2, and which comprises a cam track 9 intended to guide the additional guide means 7 included in the trolley 4, for its change of track and to allow its travel on the new trajectory.
  • FIG 4 illustrates the reverse synchronization of the first drive wheel 2, carried by a first drive wheel 39, and the second drive wheel 20, carried by a second drive wheel 390, through a reverse gear train 300.
  • this gear train can be arranged with an adequate reduction to manage the cooperation of different trajectories T1 and T2, for example with an overall figure-of-eight trajectory resulting from the cooperation of a small circle with a larger circle.
  • This mechanism thus allows the driving of a transmissible element, here the portable trolley 4, it allows the transfer of this element, and ensures the stability of this portable trolley 4.
  • the invention also relates to a mechanism 100 for positioning and guiding the positioning and adjustment of a mobile clockwork component 8 in a reciprocating movement according to a limited stroke, along a trajectory imposed by means guide, relative to a fixed structure 200 of a timepiece, such as a plate 900, a bridge, or the like.
  • a timepiece such as a plate 900, a bridge, or the like.
  • This positioning and guiding mechanism 100 is advantageously combined with such a display mechanism 1, and in particular constitutes a transfer mechanism for changing the track of the trolley 4.
  • the positioning and guiding mechanism 100 comprises a first roller 101, which is fixed indirectly to the structure 200, with limited mobility with respect to the structure 200, and which is arranged to roll on a rolling track 80 that comprises the component 8.
  • This rolling track 80 comprises at least a first recessed or protruding relief 81, which is arranged to define with the first roller 101 a first mechanical limit switch.
  • the positioning and guiding mechanism 100 further comprises at least one second roller 102, which is fixed indirectly to the structure 200 with limited mobility with respect to the structure 200 and which is arranged to roll on a rolling track 80, 80' that comprises the component 8, which rolling track 80, 80' comprises at least one second recessed or projecting relief 82 arranged to define with the second roller 102 a second mechanical limit switch.
  • the first roller 101 and the second roller 102 roll on a common rolling track 80.
  • first roller 101 and the second roller 102 roll on separate rolling tracks 80 and 80'.
  • the displacement of the first roller 101 and that of the second roller 102 are adjustable independently with respect to the structure 200.
  • the first roller 101 and/or the second roller 102 is subjected to the action of elastic return means 201, 202, tending to bring it to rest on the rolling track 80.
  • the first roller 101 and the second roller 102 are subjected to elastic return means 201, 202, which tend to exert on the component 8 torques of opposite directions.
  • the component 8 comprises two reliefs or notches 81, 82, arranged to block a corresponding roller 101, 102, at the end of travel, in order to precisely position this component 8 in the end of travel position.
  • the first roller 101 and/or the second roller 102 is carried by a rocker 105, 106, which is adjustable by an eccentric 111, 112, with respect to the structure 200, as visible on the figure 5 And 9 .
  • Rocker 105 or 106 is held in place by an intermediate plate 103, 104, which comes to cover it. It is thus easy to very precisely adjust the end-of-travel position of the mobile 8.
  • the end 107, 108, of the rocker 105, 106, opposite the first roller 101, respectively second roller 102 comprises a support boss d at least one spring constituting the elastic return means 201, 202.
  • component 8 is a slide comprising a rack 83 for driving it.
  • the component 8 is guided in a plane movement, on a side opposite the rolling track 80 by at least one guide and support surface 89.
  • the travel of the mobile 8 is rectilinear.
  • the slider 8 moves linearly alternating from left to right, guided by rollers 98. At the end of its travel, this slider 8 requires precise positioning, which cannot be ensured by a cog, because of the gear games.
  • the slider 8 comprises, on either side, said two notches 81, 82, or notches, made in the shape of a V.
  • On each side is a rocker 105, 106, guided on an eccentric 111, 112, and provided with a first roller 101, respectively second roller 102, free and pivoting.
  • These levers 105, 106 are pressed against the slider 8 by means of springs 201, 202.
  • the first roller 101 and the second roller 102 of the levers 105, 106 roll on a smooth surface 80 of the slider 8, in order to reduce the torque required, and at the end of the race, the first roller 101 or the second roller 102 of the rocker concerned 105 or 106 falls into the notch 81 or 82 in the form of a V of the slider 8, positioning the latter precisely.
  • the position of the rocker 105, 106 can be adjusted thanks to its pivoting on the eccentric 111, 112, by placing a screwdriver in the notch of the latter. In this way the positioning of the slider 8 at the end of its travel is adjustable from one room to another.
  • This positioning and guiding mechanism 100 thus ensures precise positioning of a mobile component, allows fine adjustment of the positioning, piece by piece, in the two start and end of stroke positions, finally the torque is reduced thanks to the pivoting rollers.
  • the second trajectory T2 is secant or tangent at at least one point with the first trajectory T1.
  • the display mechanism 1 comprises a slider 8, which is movable in a housing 90 of the plate or the like, this housing 90 is a straight groove in the figures.
  • This slider 8 is driven by the first mobile drive 2 and/or by the second mobile drive 20, or by a clockwork movement 1000 or by a drive mechanism 800, as visible on the figures 11 to 13 , and comprises at least one transfer guide means 9 arranged to guide, at at least one point of tangency, the trolley 4 to pass from the first trajectory T1 to the second trajectory T2 or vice versa.
  • This transfer guide means 9 is more particularly made in the form of a cam track, the figures 10 and 11 show that this cam track comprises a first channel 91 to cause the trolley 4 to pass from the trajectory T1 to the trajectory T2, and a second channel 92 to carry out the reverse maneuver.
  • the slider 8 thus moves, to allow the trajectory of the traveling carriage 4 to be changed, as can be seen in the figure 10 .
  • a second drive wheel 390 of the second drive wheel set 20 rotates and transmits its rotation, in particular to a demultiplier wheel set 52, to rotate a second transfer wheel 209, assembled with a second cam 53.
  • a rocker is constituted by a pivoting rack 55, provided with two feelers 56 and 57, and which is driven, on one side by the second cam 53, and which drives, by a toothed sector 59 which it comprises, the pinion 87 a driving wheel 88 which allows the movement of the slider 8 by means of a rack 83, and on the other side by a first cam 54, integral with a first transfer wheel 29, and of complementary shape to the second cam 53, thus leaving a clearance of a few hundredths of a millimeter of freedom to the rake 55.
  • the first transfer wheel 29 is driven in the same direction as the second transfer wheel 209 via a synchronization wheel 51 .
  • the slope of the second cam 53 drives the rake 55
  • the first cam 54 makes it possible to limit the movement of the rake 55
  • the second cam 53 then serving, in turn, to limit the movement of the rake 55.
  • the second cam 53 could also be secured to a mobile other than the second drive wheel 390 of the second drive mobile 20, and the first cam 54 secured to a mobile other than the synchronization wheel 51.
  • This synchronization wheel 51 can be one of the mobiles of the inverter gear train 300, to save volume in the movement 1000.
  • This system allows the change of trajectory or the change of display of an element, without rotation, in a linear way.
  • the invention also relates to a timepiece movement 1000 comprising at least one such mechanism 100 for positioning and positioning and adjustment guidance, and/or at least one such display mechanism 1.
  • the invention also relates to a timepiece, in particular a watch 2000, comprising such a movement 1000 and/or at least one such positioning and positioning and adjustment guiding mechanism 100, and/or at least one such display 1.
  • the invention takes up little space, and makes it possible to integrate fairly easily into a watch, even of small dimensions such as a ladies' watch, a spectacular and innovative display complication, based on a mechanism of great finesse by being designed for optimal recovery of operating games.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Electric Clocks (AREA)

Claims (13)

  1. Mechanismus (100) zum Positionieren und Einstellen einer Uhrenkomponente (8), die in einer Hin- und Herbewegung auf einem begrenzten Weg entlang einer durch Führungsmittel vorgegebenen Bahn in Bezug auf eine feste Struktur (200) einer Uhr beweglich ist, wobei der Mechanismus (100) eine erste Rolle (101) umfasst, die indirekt an der Struktur (200) mit einer begrenzten Beweglichkeit in Bezug auf die Struktur (200) befestigt ist, und die angeordnet ist, um auf einer Lagerbahn (80), die die Komponente (8) umfasst, zu rollen, wobei die Lagerbahn (80) mindestens ein erstes aufstossendes oder vorstehendes Relief (81) beinhaltet, das angeordnet ist, um mit der ersten Rolle (101) einen ersten mechanischen Endanschlag zu definieren, wobei der Mechanismus (100) weiter mindestens eine zweite Rolle (102) beinhaltet, die indirekt an der Struktur (200) mit einer begrenzten Beweglichkeit in Bezug auf die Struktur (200) befestigt ist, und die angeordnet ist, um auf der Lagerbahn (80), die die Komponente (8) beinhaltet, oder auf einer separaten Lagerbahn (80'), die die Komponente beinhaltet, zu rollen, wobei die Lagerbahn (80; 80') mindestens ein zweites aufstossendes oder vorstehendes Relief (82) beinhaltet, das angeordnet ist, um mit der zweiten Rolle (102) einen zweiten mechanischen Endanschlag zu definieren, wobei in dem Mechanismus der Ausschlag der ersten Rolle (101) und jener der zweiten Rolle (102) in Bezug auf die Struktur (200) unabhängig voneinander einstellbar sind;
    dadurch gekennzeichnet, dass die erste Rolle (101) und/oder die zweite Rolle (102) elastischen Rückstellmitteln (201; 202) unterworfen ist, die dazu tendieren, sie an der Lagerbahn (80, 80') anzulegen.
  2. Mechanismus (100) nach Anspruch 1, dadurch gekennzeichnet, dass die erste Rolle (101) und die zweite Rolle (102) den elastischen Rückstellmitteln (201; 202) unterworfen sind, die dazu tendieren, auf die Komponente (8) Momente in entgegengesetzte Richtungen anzulegen.
  3. Mechanismus (100) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die erste Rolle (101) und/oder die zweite Rolle (102) durch einen Exzenter in Bezug auf die Struktur (200) einstellbar ist.
  4. Mechanismus (100) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Komponente (8) ein Schlitten ist, der in einer Aufnahme (90) oder einer Nut der Struktur (200) beweglich ist, und eine Zahnstange zu dessen Antrieb beinhaltet.
  5. Mechanismus (100) nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Komponente (8) in einer ebenen Bewegung auf einer Seite gegenüber der Lagerbahn (80) durch mindestens eine Führungs- und Anlegefläche (89) geführt wird.
  6. Mechanismus (100) nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das erste Relief (81) und/oder das zweite Relief (82) eine Kerbe (81; 82) beinhaltet, die angeordnet ist, um die erste Rolle (101) oder die zweite Rolle (102) am Endanschlag zu blockieren, um die Komponente (8) in der Position des Endanschlags genau zu positionieren.
  7. Mechanismus (100) nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die erste Rolle (101) und/oder die zweite Rolle (102) von einer Wippe (105; 106) getragen wird, die zur Einstellung der Position des Endanschlags des Drehteils (8) durch einen Exzenter (111; 112) in Bezug auf die Struktur (200) einstellbar ist.
  8. Mechanismus (100) nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass ein Ende (107; 108) der Wippe (105; 106), welches der ersten Rolle (101) bzw. der zweiten Rolle (102) gegenüberliegt, einen Buckel zum Anlegen von mindestens einer Feder beinhaltet, die die elastischen Rückstellmittel (201; 202) bildet.
  9. Anzeigemechanismus (1) einer Uhr, der einen Mechanismus (100) zum Positionieren und Einstellen einer Komponente nach einem der Ansprüche 1 bis 8 beinhaltet.
  10. Anzeigemechanismus (1) nach Anspruch 9, dadurch gekennzeichnet, dass der Anzeigemechanismus (1) einen Schiebetriebschlitten (4) beinhaltet, der auf Bahnen nacheinander entlang mindestens einem ersten Weg T1 und einem zweiten Weg T2 beweglich ist, die im Bereich einer Verbindungszone T0 verbunden sind, in der die Übertragung von einem Weg auf den anderen durch den Drehteil (8) erfolgt, der mindestens ein Übertragungsführungsmittel (9) beinhaltet, das angeordnet ist, um den Schiebetriebschlitten (4) an mindestens einem Berührungspunkt zu führen, um von dem ersten Weg T1 auf den zweite Weg T2 oder umgekehrt überzugehen.
  11. Anzeigemechanismus (1) nach Anspruch 10, dadurch gekennzeichnet, dass das Übertragungsführungsmittel (9) eine Kurvenscheibenbahn ist, die einen ersten Kanal (91) beinhaltet, um den Schiebetriebschlitten (4) vom ersten Weg T1 auf den zweiten Weg T2 übergehen zu lassen, und einen zweiten Kanal (92), um die umgekehrte Betätigung durchzuführen.
  12. Uhrwerk (1000), welches mindestens einen Anzeigemechanismus (1) nach einem der Ansprüche 9 bis 11 und/oder mindestens einem Mechanismus (100) zum Positionieren und Einstellen einer Komponente nach einem der Ansprüche 1 bis 8 beinhaltet.
  13. Uhr (2000), die ein Uhrwerk (1000) nach Anspruch 12 und/oder mindestens einen Anzeigemechanismus (1) nach einem der Ansprüche 9 bis 11 und/oder mindestens einen Mechanismus (100) zum Positionieren und Einstellen einer Komponente nach einem der Ansprüche 1 bis 8 beinhaltet.
EP19199581.0A 2019-09-25 2019-09-25 Uhr-anzeigemechanismus mit mehrspuriger führung Active EP3798740B1 (de)

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EP19199581.0A EP3798740B1 (de) 2019-09-25 2019-09-25 Uhr-anzeigemechanismus mit mehrspuriger führung

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EP19199581.0A EP3798740B1 (de) 2019-09-25 2019-09-25 Uhr-anzeigemechanismus mit mehrspuriger führung

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EP3798740A1 EP3798740A1 (de) 2021-03-31
EP3798740B1 true EP3798740B1 (de) 2023-09-06

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Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2030980A (en) * 1932-05-20 1936-02-18 Elgin Nat Watch Co Self-winding timepiece
FR1034691A (fr) * 1950-12-16 1953-07-29 Perfectionnements aux dispositifs d'entraînement des appareils du type compteur à mouvement discontinu
FR1242819A (fr) * 1957-10-22 1960-10-07 Perfectionnements aux montres à remontage automatique
CH713056A2 (fr) * 2016-10-18 2018-04-30 Eta Sa Mft Horlogere Suisse Mouvement mécanique d'horlogerie avec résonateur à deux degrés de liberté avec mécanisme d'entretien par galet roulant sur une piste.

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