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EP3338144B1 - Bistabile mechanische vorrichtung für uhrwerke - Google Patents

Bistabile mechanische vorrichtung für uhrwerke Download PDF

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Publication number
EP3338144B1
EP3338144B1 EP16742314.4A EP16742314A EP3338144B1 EP 3338144 B1 EP3338144 B1 EP 3338144B1 EP 16742314 A EP16742314 A EP 16742314A EP 3338144 B1 EP3338144 B1 EP 3338144B1
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EP
European Patent Office
Prior art keywords
mechanical device
bistable mechanical
elastic
bistable
elastic strips
Prior art date
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Active
Application number
EP16742314.4A
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English (en)
French (fr)
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EP3338144A1 (de
Inventor
Nicolas Déhon
Jean-Baptiste LE BRIS
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Patek Philippe SA Geneve
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Patek Philippe SA Geneve
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Publication of EP3338144A1 publication Critical patent/EP3338144A1/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
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/04—Oscillators acting by spring tension
    • 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
    • G04B15/06—Free escapements
    • 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
    • G04B15/10—Escapements with constant impulses for the regulating mechanism
    • 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
    • G04B15/12—Adjusting; Restricting the amplitude of the lever or the like

Definitions

  • the present invention relates to a bistable mechanical device, particularly for the watch industry.
  • WO 99/64936 a timepiece exhaust using a bistable mechanical device comprising a leaf spring which works in buckling.
  • the leaf spring is fixed at both ends to recesses or pivoting members, and its midpoint is kept aligned with said two ends. The distance separating the two recesses is such that the leaf spring undergoes a compression which forces it to deform according to a second mode buckling.
  • the leaf spring thus has two convexities of opposite directions on either side of its midpoint.
  • the leaf spring can occupy two stable functional states, the transition from one to the other of these stable functional states being effected by reversing the direction of the two convexities.
  • an armature lever acting symmetrically in the region of the two convexities deforms the leaf spring from one of its stable functional states to a metastable state close to an unstable state corresponding to a fourth mode buckling, to arm the leaf spring.
  • a trigger rocker located in the midpoint zone acts on the leaf spring to tilt it into its other stable functional state.
  • This switch can be broken down into two phases, one requiring a small energy input, the other the restitution of a much larger energy. Taking as reference an anchor escapement, the first phase can be compared to the release, the second to the pulse. The difference lies in the fact that these phases correspond to perfectly stable energy exchanges, which can not be the case with an anchor escapement.
  • the arming lever is actuated by integral armature cams of exhaust gears driven by the finishing gear of the timepiece.
  • the rocker détente cooperates with a balance-balance oscillator and includes for this purpose a fork of the same type as conventional anchor forks.
  • the energy allowing the trigger rocker to move the leaf spring into its other stable functional state since its state of arming is provided by the balance, when a peg secured to the pendulum collides with the input horn of the fork .
  • the passage of the leaf spring from one stable state to another changes the inclination of the zone of the midpoint, which causes the trigger rocker to rock, which then imparts a pulse to said peg secured to the balance.
  • the figure 1 attached shows four different states of the leaf spring according to this document WO 99/64936 , namely a state of rest ( Figure 1 (a) ) where the leaf spring is not yet subjected to the compression causing its buckling, a first stable functional state (solid line of the Figure 1 (b) ) where the recesses to which are fixed the ends of the leaf spring have been brought together to flare the leaf spring, a metastable state close to an unstable state where the leaf spring is armed (solid line of the Figure 1 (c) ) and a second stable functional state (solid line of Figure 1 (d) ).
  • a disadvantage of this bistable mechanical device is that it is difficult to adjust the tension of the leaf spring, that is to say the compression applied to its ends, while maintaining fixed the line connecting said ends (passage of the Figure 1 (a) to the Figure 1 (b) ). If the alignment of the ends of the leaf spring is modified during the adjustment, the operation of the exhaust will be disturbed because the asymmetry will generate difficulties in keeping to a minimum the energy required for the disengagement (first phase of the tilting) in one of the two alternations. A release requiring too much energy will cause a drop in performance, increase the risk that the system is not self-starting and may be a cause of anisochronism.
  • bistable mechanical device Another type of bistable mechanical device is described in the patent application WO 2013/144236 .
  • This device also used as part of an exhaust, comprises two parallel flexible blades whose median parts are connected by a movable frame and whose ends are fixed to the masses themselves fixed to a fixed structure.
  • the flexible blades are prestressed in buckling.
  • the distance separating the masses can be adjusted by turning eccentrics which act on the masses.
  • the movable frame moves substantially in translation as the flexible blades move from one stable functional state to another.
  • the movable frame is on an inner circumference of the spouts which cooperate with the teeth of an escape wheel.
  • the movable frame also carries an arm that defines a fork similar to that of a classic Swiss anchor, to cooperate with a peg of a pendulum.
  • This device has the same drawback as the device according to the document WO 2009/118310 namely, the need for precise adjustment of the compression applied to the flexible blades.
  • bistable mechanical device comprising flexible blades which are prestressed by buckling during their manufacture by growth of silicon oxide on silicon or by a cooling step playing on the difference of the thermal coefficients of silicon and silicon oxide.
  • the flexible blades are thus always subjected to deformation stresses after their manufacture.
  • This bistable mechanical device is complicated to manufacture.
  • the present invention aims to overcome the aforementioned disadvantages and proposes for this purpose a bistable mechanical device comprising a first elastic blade and a second elastic blade, the bistable mechanical device can occupy a state of rest where the first and second elastic blades are free of any deformation stress and the first and second stable functional states where the first and second elastic blades each have a convexity, the convexity of each of the first and second elastic blades changing direction during the passage of one of the first and second stable functional states to the other, characterized in that each of the first and second resilient blades is preformed to already have a convexity in the rest state, the convexity of one of the first and second resilient blades changing direction during the passage of the state of rest at one of the first and second stable functional states.
  • bistable state is meant a state that the bistable mechanical device is likely to occupy in use.
  • the bistable mechanical device has a zero energy level in the idle state and a non-zero energy level in each of the first and second stable functional states.
  • the bistable mechanical device will have substantially identical respective energy levels in the first and second stable functional states. These energy levels are pre-established, that is to say, determined during the manufacture of the bistable mechanical device. No adjustment of the tension of the resilient blades is necessary in the present invention.
  • the resilient blades may be portions of the same leaf spring or be blades separated from each other and coupled, or coupled to each other.
  • the state of rest of the bistable mechanical device is a state occupied by the bistable mechanical device before its final assembly in a mechanism intended to use it. However, the present invention does not exclude that this state of rest can also be occupied by the bistable mechanical device after its final assembly in said mechanism.
  • the first and second stable functional states are states that can occupy the bistable mechanical device after its final assembly in said mechanism. However, the present invention does not exclude that the first and second stable functional states can also be occupied before mounting the bistable mechanical device in said mechanism.
  • the bistable mechanical device further comprises a rigid frame carrying the first and second resilient blades.
  • the first and second resilient blades together form or form part of a spring whose two ends are attached to the rigid frame.
  • a midpoint of the spring may be located on the line passing through said two ends or, alternatively, out of said straight line.
  • each of the first and second resilient blades are fixed to the rigid frame and in the first and second stable functional states a rigid and movable connecting member with respect to the rigid frame connects the respective middle portions of the first and second elastic blades.
  • the bistable mechanical device comprises first and second stages, the first stage comprising the first elastic blade, a third preformed elastic blade substantially parallel to the first elastic blade and a first rigid connecting element connecting the parts. medians of the first and third elastic blades, the second stage comprising the second elastic blade, a fourth preformed elastic blade substantially parallel to the second elastic blade and a second rigid connecting element connecting the middle portions of the second and fourth resilient blades, the two ends of each of the first to fourth resilient blades being fixed to the rigid frame, and in the first and second stable functional states the first and second connecting elements are assembled to one another.
  • said elastic blades and the rigid frame form or form part of the same monolithic piece.
  • the present invention further provides a mechanism comprising a bistable mechanical device as defined above and at least one armoring member for arming said elastic strips and allowing the bistable mechanical device, in use, to alternately occupy the first and second stable functional states.
  • the mechanism may further comprise at least one output member for receiving energy restored by said elastic blades.
  • Said at least one armature member may comprise a first rocker and said at least one output member may comprise a second rocker.
  • the present invention further provides a clock mechanism comprising a mechanism as defined above.
  • a bistable mechanical device 1 comprises a rigid frame 2 and a spring 3 carried by the rigid frame 2.
  • the rigid frame 2 is intended to be mounted on a support or frame 4 of a mechanism, for example on the plate of a watch movement, or may constitute or be part of this support 4.
  • the spring 3 comprises a first elastic blade 5, one end 5a is fixed to the frame 2, a second elastic blade 6, one of which end 6a is fixed to the frame 2, and a rigid connecting element 7 located in the middle part of the spring 3 and at which the other end 5b of the first elastic blade 5 and the other end 6b of the second elastic blade 6 are fixed.
  • the spring 3 or even the bistable mechanical device 1 as a whole is a monolithic piece, for example made of silicon by deep reactive ion etching (DRIE) or any other suitable method, or metal by electroerosion, LIGA or any other appropriate method.
  • DRIE deep reactive ion etching
  • the two ends 5a, 6a of the spring 3 and its midpoint 8 are situated on the same straight line D.
  • the midpoint 8 of the spring 3 is the center of a hole 9 that the connecting element 7 has.
  • This hole 9 is intended to be traversed by a rod defining an axis of rotation passing through said midpoint 8, axis of rotation about which the connecting element 7 can rotate relative to the frame 2.
  • the aforementioned rod may be secured to the frame 2 or the support 4, or pivoting in bearings of the frame 2 or the support 4 in which case this rod is preferably driven into a rocking lever 12 which is described below.
  • the connecting element 7 constitutes all or part of a trigger rocker.
  • the connecting element 7 may constitute a part of the trigger rocker comprising a dart and intended to receive another part of the trigger rocker having a fork, as described in the patent application. WO 2009/118310 .
  • the connecting element 7 may be a support for receiving a dart and a fork, as described in the patent application. CH 705674 .
  • the stinger and the fork are similar to those of a conventional exhaust anchor and have the function of cooperating with a balance.
  • Each elastic blade 5, 6 has in its central part or near its middle part a bulge having a hole 10, 11 which is intended to be traversed by an ankle carried by the rocker arming 12.
  • the rocker arming 12 and the trigger rocker are preferably coaxial, as shown, i.e. the armature rocker 12 is mounted on the rod passing through the hole 9 of the connecting element 7 to pivot about the same axis. rotation as the trigger rocker. However, the armature and trigger rockers are free to rotate relative to each other.
  • the armature rocker 12 is shown schematically at the figure 2 .
  • the armature rocker 12 may be similar to that described in the document WO 99/64936 or in the document WO 2009/118310 .
  • the elastic blades 5, 6 could be joined (without the connecting element 7 between them) and thus form two portions of the same blade, as in the document WO 99/64936 .
  • the midpoint 8 would be the junction point of the two elastic strips 5, 6 and the trigger rocker would be similar to that described in this document WO 99/64936 .
  • the bistable mechanical device 1 can be part of a watch movement escapement, like the devices according to the aforementioned documents. Other applications, watchmakers or not, however, are possible.
  • the spring 3 is preformed for, at rest, that is to say in the absence of any deformation stress, in particular of any buckling stress, have a curved shape as shown in FIG. Figure 3 (a) .
  • the first elastic blade 5 and the second elastic blade 6 have respective convexities of the same direction and the elastic blades 5, 6 are symmetrical with respect to a straight line passing through the midpoint 8 of the spring 3 and perpendicular to the straight line D. adjusting the distance between the ends 5a, 6a of the spring 3 is necessary. This distance is determined during the manufacture of the bistable mechanical device. In this state of rest, the bistable mechanical device 1 can be mounted in the mechanism intended to use it, according to the operations described below.
  • the fitter installs the bistable mechanical device on the support 4 of the mechanism, by fixing the frame 2 on this support 4 and by engaging the rod mentioned previously in the hole 9 of the connecting element 7 so that the connecting element 7 and the midpoint 8 of the spring 3 can move in rotation.
  • the midpoint 8 of the spring 3 is thus kept aligned with the ends 5a, 6a of the spring 3.
  • the function exerted by the rod which passes through the hole 9 of the connecting element 7 is shown schematically by supports 13 and the connecting element 7 is not shown.
  • the fitter deforms the spring 3 so as to reverse the direction of the convexity of one of the elastic blades 5, 6 to move the spring 3 into a first state stable functional.
  • the shape of the spring 3 corresponding to this first stable functional state is represented in solid line at the Figure 3 (b) , the broken line representing the shape of the spring 3 at rest.
  • the armature rocker 12 can be mounted on said rod before the deformation of the spring 3 by the fitter, or even before the engagement of said rod in the hole 9 of the connecting element 7.
  • the armature rocker 12 and said rod may be in one piece.
  • the bistable mechanical device 1 may, in operation, alternately occupy the first stable functional state and a second stable functional state shown in solid lines respectively to the Figures 3 (b) and 3 (d) .
  • the respective shapes of the spring 3 in the first and second stable functional states are substantially symmetrical with respect to the straight line D.
  • the armature rocker 12 is rotated in a specific direction (clockwise to the figure 2 ) to deform the spring 3 to a state close to instability (see the solid line of the Figure 3 (c) , the broken line corresponding to the first stable functional state) by reversing the direction of the convexity of each elastic blade 5, 6.
  • the armature of the spring 3 is then maximum.
  • the rocking trigger receiving energy
  • the kinetics of a pendulum with which it cooperates provides a torque to the spring 3 in its median part, which allows the spring 3 to move beyond the state of instability and to switch to the second stable functional state shown in solid line at the Figure 3 (d) .
  • Tipping in the second stable functional state rotates the trigger rocker, which can thus communicate a pulse to the pendulum.
  • the transition from the second stable functional state to the first stable functional state occurs in a similar manner, with opposite directions of rotation for the armature rocker 12, the trigger rocker and the rocker arm.
  • the torque required to overcome the state of instability could be provided by the armature lever 12 rather than by the trigger rocker.
  • the armature rocker 12 provides at least a portion of the energy required to arm the spring 3 and move it from one stable functional state to another, and the trigger rocker constitutes a output which receives the energy restored by the spring 3 after its arming.
  • the first and second stable functional states have the same energy level, as in the case of a compression-deformed leaf spring according to a second mode buckling.
  • the spring 3 according to the invention does not need to be subjected to compression and therefore the position of its ends 5a, 6a does not need to be adjusted.
  • the symmetry of spring 3 and the energy level of stable functional states are guaranteed and reproducible of a device bistable mechanical to the other. Mounting the bistable mechanical device 1 in the mechanism using it is also greatly facilitated.
  • FIGS. Figures 4 and 5 A second embodiment of the bistable mechanical device according to the invention is illustrated in FIGS. Figures 4 and 5 .
  • the bistable mechanical device according to this second embodiment, designated by the reference 14 is similar to the device 1 illustrated in FIG. figure 2 in that it comprises a frame 2 'carrying a spring 3' comprising two elastic strips 5 ', 6' separated by a rigid connecting element 7 '.
  • This bistable mechanical device 14 differs from the device 1 in that the midpoint 8 'of the spring 3', through which the axis of rotation of the connecting element 7 'passes, is not situated on the straight line D' connecting the ends 5a ', 6a' of the spring 3 '.
  • This device 14 operates in the same way as the device 1.
  • FIG. figure 6 A third embodiment of the bistable mechanical device according to the invention is illustrated in FIG. figure 6 .
  • the bistable mechanical device according to this third embodiment, indicated by the reference numeral 15, comprises a rigid frame 16 diagrammatically represented by two parallel bars, a first elastic blade 17 and a second elastic blade 18.
  • the two ends 17a, 18a of each blade 17, 18 are fixed to the frame 16.
  • the elastic blades 17, 18 In the state of rest (cf. Figure 6 (a) ), that is to say in the absence of any strain of strain, the elastic blades 17, 18 have respective convexities of opposite directions and are preferably symmetrical with respect to a line parallel to a Y axis, the portion median of the second elastic blade 18 is attached to a rigid connecting member 19 and the first elastic blade 17 is free with respect to the element of rigid connection 19.
  • the bistable mechanical device 15 is then in a first stable functional state, where the elastic blades 17, 18 have respective convexities of the same direction. From this first stable functional state, the connecting element 19 can be moved in translation parallel to an axis X perpendicular to the Y axis by deforming the elastic blades 17, 18 until the bistable mechanical device 15 reaches a second stable functional state where the direction of the convexity of the elastic strips 17, 18 has been reversed (cf. Figure 6 (c) ).
  • the connecting element 19 can be displaced in translation between two stable positions corresponding to the first and second stable functional states of the bistable mechanical device 15.
  • the bistable mechanical device 15 can be used, for example in a watch exhaust of the type described in the patent application WO 2013/144236 .
  • the connecting element 19 may be a frame having inner teeth forming stoppers cooperating with the teeth of an escape wheel, the frame also carrying an arm which defines a fork similar to that of a Swiss anchor conventional to cooperate with a peg of a pendulum.
  • the escape wheel constitutes a winding member which provides the energy for arming the resilient blades 17, 18 and passing the bistable mechanical device 15 from one stable functional state to the other
  • the arm defining the fork constitutes an output member which receives the energy restored by the resilient blades 17, 18 after their arming.
  • the resilient blades 17, 18, the connecting element 19 and the frame 16 may form or be part of the same monolithic part.
  • the ends 17a, 18a of the resilient blades 17, 18 can be fixed to the frame 16 by means of springs, as described in the patent application. WO 2013/144236 .
  • FIG. figure 7 A fourth embodiment of the bistable mechanical device according to the invention is illustrated in FIG. figure 7 .
  • the bistable mechanical device according to this fourth embodiment designated by the reference numeral 20, comprises a rigid frame 21 diagrammatically represented by two parallel bars, a first stage 22 along a Z axis and a second stage 23 along the Z axis.
  • stage 22 comprises two parallel resilient blades 24, 25 whose ends 24a, 25a are fixed to the frame 21 and whose median parts are connected to one another by a first rigid connecting element 26.
  • the second stage 23 comprises two parallel resilient blades 27, 28 whose ends 27a, 28a are fixed to the frame 21 and whose median parts are connected to one another by a second rigid connecting element 29.
  • the direction of the convexity of the elastic blades 24, 25 is opposite to the direction of the convexity of the elastic strips 27, 28, and the connecting elements 26, 29 are not aligned parallel to the axis Z.
  • the elastic blades 24, 25 of the first stage are, in plan view, symmetrical elastic blades 27, 28 relative to a straight line parallel to a Y axis perpendicular to the Z axis. From this state of rest, one of the connecting elements 26, 29 can be moved.
  • the connecting elements 26, 29 may be assembled to one another, for example by welding.
  • the bistable mechanical device 20 is then in a first stable functional state. From this first stable functional state, the connecting elements 26, 29 can be moved together in translation parallel to the X axis by deforming the elastic strips 24, 25, 27, 28 until the bistable mechanical device 20 reaches a second stable functional state where the direction of convexity of each elastic blade has been reversed (cf. Figure 7 (c) ).
  • the connecting elements 26, 29 can be moved together in translation between two stable positions corresponding to the first and second stable functional states of the bistable mechanical device 20.
  • This bistable mechanical device 20 can be used to the same way as the device 15 illustrated in figure 6 .
  • the resilient blades 24, 25, 27, 28, the connecting elements 26, 29 and the frame 21 may form or be part of the same monolithic piece.

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Claims (14)

  1. Bistabile mechanische Vorrichtung, die eine erste elastische Klinge (5; 5; 17; 24) und eine zweite elastische Klinge (6; 6; 18; 27) umfasst, wobei die bistabile mechanische Vorrichtung einen Ruhezustand, in dem die erste und die zweite elastische Klinge frei von jeder Verformungsspannung sind, und einen ersten und einen zweiten stabilen Funktionszustand einnehmen kann, in denen die erste und die zweite elastische Klinge jeweils eine Konvexität aufweisen, wobei die Konvexität von jeder von der ersten und der zweiten elastischen Klinge beim Übergang von einem von dem ersten und dem zweiten stabilen Funktionszustand in den anderen ihre Richtung ändert, dadurch gekennzeichnet, dass jede von der ersten und der zweiten elastischen Klinge vorgeformt ist, um bereits im Ruhezustand eine Konvexität aufzuweisen, wobei die Konvexität von einer von der ersten und der zweiten elastischen Klinge beim Übergang von dem Ruhezustand in einen von dem ersten und dem zweiten stabilen Funktionszustand ihre Richtung ändert.
  2. Bistabile mechanische Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass sie im ersten und im zweiten stabilen Funktionszustand im Wesentlichen identische Energiepegel aufweist.
  3. Bistabile mechanische Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass sie einen starren Chassis (2; 2; 16; 21) umfasst, der die erste und die zweite elastische Klinge (5, 6; 5; 6'; 17, 18; 24, 27) trägt.
  4. Bistabile mechanische Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die erste und die zweite elastische Klinge (5, 6; 5', 6') zusammen eine Feder (3; 3'), deren zwei Enden (5a, 6a; 5a'; 6a') an dem starren Chassis (2; 2') befestigt sind, bilden oder Teil davon sind.
  5. Bistabile mechanische Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass im Ruhezustand und in dem ersten und dem zweiten stabilen Funktionszustand ein Mittelpunkt (8) der Feder (3) sich auf der Geraden (D) befindet, die durch die zwei Enden (5a, 6a) verläuft.
  6. Bistabile mechanische Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass im Ruhezustand und im ersten und im zweiten stabilen Funktionszustand ein Mittelpunkt (8') der Feder (3') sich außerhalb der Geraden (D') befindet, die durch die zwei Enden (5a', 6a') verläuft.
  7. Bistabile mechanische Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die zwei Enden (17a, 18a) von jeder von der ersten und der zweiten elastischen Klinge (17, 18) an dem starren Chassis (16) befestigt sind, und dadurch, dass im ersten und im zweiten stabilen Funktionszustand ein starres und in Bezug zu dem starren Chassis (16) bewegliches Verbindungselement (19) die entsprechenden Mittelteile der ersten und zweiten elastischen Klinge (17, 18) verbindet.
  8. Bistabile mechanische Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass sie eine erste und eine zweite Stufe (22, 23) umfasst, wobei die erste Stufe (22) die erste elastische Klinge (24), eine dritte vorgeformte elastische Klinge (25), die im Wesentlichen parallel zur ersten elastischen Klinge (24) ist, und ein erstes starres Verbindungselement (26) umfasst, das die Mittelteile der ersten und der dritten elastischen Klinge (24, 25) verbindet, wobei die zweite Stufe (23) die zweite elastische Klinge (27), eine vierte vorgeformte elastische Klinge (28), die im Wesentlichen parallel zur zweiten elastischen Klinge (27) ist, und ein zweites starres Verbindungselement (29) umfasst, das die Mittelteile der zweiten und der vierten elastischen Klinge (27, 28) miteinander verbindet, wobei die zwei Enden (24a, 27a, 25a, 28a) von jeder von der ersten bis vierten elastischen Klinge (24, 27, 25, 28) an dem starren Chassis (21) befestigt sind, und dadurch, dass das erste und das zweite Verbindungselement (26, 29) im ersten und im zweiten stabilen Funktionszustand zusammengebaut sind.
  9. Bistabile mechanische Vorrichtung nach einem der Ansprüche 3 bis 8, dadurch gekennzeichnet, dass die elastischen Klingen und das starre Chassis ein selbes monolithisches Teil bilden oder Teil davon sind.
  10. Mechanismus, der eine bistabile mechanische Vorrichtung nach einem der Ansprüche 1 bis 9 und mindestens ein Spannungsorgan (12) umfasst, um die elastischen Klingen zu spannen und es der bistabilen mechanischen Vorrichtung zu erlauben, bei der Verwendung abwechselnd den ersten und den zweiten stabilen Funktionszustand einzunehmen.
  11. Mechanismus nach Anspruch 10, der ferner mindestens ein Ausgangsorgan (7) zum Empfangen der von den elastischen Klingen abgegebenen Energie umfasst.
  12. Mechanismus nach Anspruch 11, dadurch gekennzeichnet, dass das mindestens eine Spannungsorgan (12) eine erste Wippe umfasst und das mindestens eine Ausgangsorgan (7) eine zweite Wippe umfasst.
  13. Uhrmechanismus, der einen Mechanismus nach einem der Ansprüche 10 bis 12 umfasst.
  14. Verfahren zur Montage einer bistabilen mechanischen Vorrichtung nach einem der Ansprüche 1 bis 9 in einem Mechanismus, dadurch gekennzeichnet, dass es die folgenden Schritte umfasst:
    - Montieren der bistabilen mechanischen Vorrichtung im Ruhezustand auf einer Stütze (4) des Mechanismus;
    - Verformen von einer von der ersten und der zweiten elastischen Klinge bis zum Umkehren der Richtung ihrer Konvexität, um die bistabile mechanische Vorrichtung in einen von dem ersten und dem zweiten stabilen Funktionszustand übergehen zu lassen;
    - Zum-Zusammenwirken-Bringen von mindestens einem Spannungsorgan (12) mit der bistabilen mechanischen Vorrichtung, um es der bistabilen mechanischen Vorrichtung zu erlauben, bei der Verwendung abwechselnd den ersten und den zweiten stabilen Funktionszustand einzunehmen.
EP16742314.4A 2015-08-21 2016-07-26 Bistabile mechanische vorrichtung für uhrwerke Active EP3338144B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP15182005 2015-08-21
PCT/EP2016/067714 WO2017032528A1 (fr) 2015-08-21 2016-07-26 Dispositif mécanique bistable, notamment pour l'horlogerie

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EP3475765B1 (de) 2016-06-27 2020-07-29 Patek Philippe SA Genève Uhrwerkshemmung
WO2018002772A1 (fr) 2016-06-27 2018-01-04 Patek Philippe Sa Geneve Echappement d'horlogerie
WO2018002778A1 (fr) 2016-06-29 2018-01-04 Patek Philippe Sa Geneve Mouvement d'horlogerie mecanique
EP3492996B1 (de) * 2017-12-04 2020-09-02 Patek Philippe SA Genève Uhrhemmung mit bistabiler lamelle

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WO2013144236A1 (fr) * 2012-03-29 2013-10-03 Nivarox-Far S.A. Mécanisme d'échappement flexible à cadre mobile
EP2730980A1 (de) * 2012-11-09 2014-05-14 Nivarox-FAR S.A. Uhrmechanismus zur Begrenzung oder Übertragung

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AU3622799A (en) * 1998-06-08 1999-12-30 Manufacture Des Montres Rolex S.A. Method for transmitting bursts of mechanical energy from a power source to an oscillating regulator

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
WO2013144236A1 (fr) * 2012-03-29 2013-10-03 Nivarox-Far S.A. Mécanisme d'échappement flexible à cadre mobile
EP2730980A1 (de) * 2012-11-09 2014-05-14 Nivarox-FAR S.A. Uhrmechanismus zur Begrenzung oder Übertragung

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HK1250179B (zh) 2020-06-05
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