EP2596406B1 - Mecanisme oscillant a pivot elastique et mobile de transmission d'energie - Google Patents

Mecanisme oscillant a pivot elastique et mobile de transmission d'energie Download PDF

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Publication number
EP2596406B1
EP2596406B1 EP11733619.8A EP11733619A EP2596406B1 EP 2596406 B1 EP2596406 B1 EP 2596406B1 EP 11733619 A EP11733619 A EP 11733619A EP 2596406 B1 EP2596406 B1 EP 2596406B1
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EP
European Patent Office
Prior art keywords
elastic
oscillating mechanism
escapement
rigid element
pivot axis
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.)
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Application number
EP11733619.8A
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German (de)
English (en)
French (fr)
Other versions
EP2596406A1 (fr
Inventor
Pierre Cusin
Christian Charbon
Marco Verardo
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.)
Nivarox Far SA
Nivarox SA
Original Assignee
Nivarox Far SA
Nivarox 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
Priority claimed from CH11982010A external-priority patent/CH703464B1/fr
Priority claimed from EP10191774.8A external-priority patent/EP2455821B2/fr
Application filed by Nivarox Far SA, Nivarox SA filed Critical Nivarox Far SA
Priority to EP11733619.8A priority Critical patent/EP2596406B1/fr
Priority to EP15153532.5A priority patent/EP2894520A3/fr
Publication of EP2596406A1 publication Critical patent/EP2596406A1/fr
Application granted granted Critical
Publication of EP2596406B1 publication Critical patent/EP2596406B1/fr
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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
    • G04B17/00—Mechanisms for stabilising frequency
    • 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
    • G04B13/00—Gearwork
    • G04B13/02—Wheels; Pinions; Spindles; Pivots
    • G04B13/025—Wheels; Pinions; Spindles; Pivots with elastic means between the toothing and the hub of a toothed 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
    • G04B15/00—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
    • G04B15/14—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
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/02—Oscillators acting by gravity, e.g. pendulum swinging in a plane
    • 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
    • G04B17/045—Oscillators acting by spring tension with oscillating blade springs
    • 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
    • G04B17/06—Oscillators with hairsprings, e.g. balance
    • G04B17/063—Balance construction
    • 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
    • G04B17/20—Compensation of mechanisms for stabilising frequency
    • 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
    • G04B17/20—Compensation of mechanisms for stabilising frequency
    • G04B17/26—Compensation of mechanisms for stabilising frequency for the effect of variations of the impulses
    • 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
    • G04B17/20—Compensation of mechanisms for stabilising frequency
    • G04B17/28—Compensation of mechanisms for stabilising frequency for the effect of imbalance of the weights, e.g. tourbillon
    • 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
    • G04B17/20—Compensation of mechanisms for stabilising frequency
    • G04B17/28—Compensation of mechanisms for stabilising frequency for the effect of imbalance of the weights, e.g. tourbillon
    • G04B17/285—Tourbillons or carrousels
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
    • G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
    • G04F7/08—Watches or clocks with stop devices, e.g. chronograph
    • G04F7/0823—Watches or clocks with stop devices, e.g. chronograph with couplings between the chronograph mechanism and the base movement

Definitions

  • the invention relates to an oscillating mechanism for a watch movement, comprising a first rigid element and a second rigid element, each arranged to be fixed to a different element of said movement and of which at least one is movable relative to the other and rotates around a theoretical pivot axis:
  • the invention also relates to a mobile energy transmission for a watch movement, comprising such an oscillating mechanism, between at least a first mobile transmitter said movement on the one hand, and at least a second mobile receiver said movement of on the other hand, said oscillating mechanism comprising at least one degree of freedom pivoting about said theoretical axis of pivoting.
  • the invention also relates to a watch movement comprising such an oscillating mechanism.
  • the invention also relates to a timepiece comprising such an oscillating mechanism.
  • the invention also relates to the use of such a mobile power transmission to decouple the inertia of a part of a cog in a watch movement comprising on the one hand an exhaust and on the other hand a second mobile greater inertia than that of said escapement, by the interposition of said mobile energy transmission either directly or in a train, between said exhaust and said second mobile, so as to allow a rapid pivoting of said exhaust before said second mobile be set in motion at each impulse.
  • the invention relates to the field of micro-mechanics, and more particularly the field of watchmaking.
  • a mobile of the finishing train comprises an elastic connecting device which is stretched under the influence of the mainspring when the escape wheel is at a standstill or during its slight recoil before release, and relaxes at the time of disengagement, to act on the anchor with a constant force, to reduce the separation between the teeth of the escape wheel and the impulse plane of the pallets of the anchor at the beginning of each pulse stroke.
  • Elastic wheels are known from documents CH 6659 in the name of Lambert , with S-arms, or DE 271 4020 in the name of Beiter , with spiral arms, or EP1580624 in the name of Pierre Kunz which has a sufficiently elastic mobile to undergo displacements without changing center distance, and without changing its meshing ratio, or EP 1 457 844 in the name of Pierre Kuntz , which uses an elastic foam spacer instead of the previous elastic arms.
  • Anti-noise gears with elastic structure are still known from the document FR 2 641 351 in the name of Alcatel , as well as wheels with built-in dampers as in the document EP 1 253 275 in the name of Siemens .
  • the document CH 479 105A in the name of Branches Balanciers Réunies SA describes a shock absorber balance with an elastic connecting member between a serge and a hub both rigid.
  • This connecting member comprises two arms in a circular arc, coaxial with the serge, corresponding to equal angles at the center, but unequal radii, a first arm of large radius being connected to the serge and the second arm by radial arms, while the second arm, of smaller radius, is connected to the hub by another radial arm.
  • These radial arms have a width greater than that of the arms in an arc.
  • the connecting member is at least one complete turn around the axis of the balance.
  • the document CH 474 101A on behalf of Fabriques de Balanciers Réunies SA describes a similar shock absorber balance.
  • Its connecting member comprises two elastic elements, each connected by a first end to the serge and a second end at one end of an elastic arm. whose middle constitutes the hub of the pendulum. The first two ends are diametrically opposed.
  • Each of these elastic elements comprises two arms in an arc of a circle, coaxial with the serge, corresponding to equal angles at the center, but unequal radii, a first arm of large radius being connected to the serge and the second arm by radial arms , while the second arm, of smaller radius, is connected to the end of the diametral arm.
  • These radial arms and the diametral arm have a width greater than that of the arcuate arms.
  • Each element extends over three quarters of a complete turn around the axis of the balance.
  • EP 2 037 335 A2 in the name of ENZLER AUGUST describes an escapement mechanism anchor, comprising two monobloc mounting arms with the anchor and having flexible blades, the directions of which are substantially concurrent and whose intersection of these directions defines a virtual pivot axis of this anchor.
  • the invention proposes to provide, for the fields of micromechanics and watchmaking, a reliable alternative to the use of traditional springs as means of maintenance of an oscillation. This alternative is sought for both micro-mechanics and nano-technologies.
  • the invention relates to an oscillating mechanism for a clockwork movement according to claim 1.
  • said oscillating mechanism adopts a four-neck RCC pivot type configuration, comprising two said intermediate rigid elements forming two non-aligned arms each extending between said first rigid element disposed in the vicinity of said axis of rotation. pivoting and said second rigid element constituting a peripheral part, to which it is connected respectively by said first elastic return means constituted by at least a first elastic blade, and by said second elastic return means constituted by at least a second elastic blade.
  • said first rigid element or said second rigid element comprises means for receiving a pulse exerted against said first elastic return means and said second elastic return means, which together constitute elastic return means arranged to oscillate said first rigid member about said pivot axis, said elastic return means constituting a resilient virtual pivot dispensing said oscillating mechanism from any fixation on a shaft or pivot, and said elastic return means comprise means for balancing the forces exerted on said first rigid element to maintain its instantaneous pivot axis as close as possible to said pivot axis.
  • the invention also relates to a mobile energy transmission for a watch movement, comprising such an oscillating mechanism, between at least a first mobile transmitter said movement on the one hand, and at least one second mobile receiver said movement on the other hand, said oscillating mechanism having at least one degree of freedom pivoting about said theoretical pivot axis, characterized in that said first means of elastic return and said second elastic return means constitute together resilient return means providing a direct or indirect elastic connection between a first axial portion and a second peripheral portion, said first axial portion located in the vicinity of said pivot axis and cooperating with said first mobile transmitter or the second mobile receiver, and said second peripheral portion radially distant from said pivot axis and cooperating with said second mobile receiver or the first mobile transmitter, and said elastic return means being arranged to, as appropriate, absorb, store or release energy when an angular displacement in pivoting around a secondary axis parallel or coincident with said pivot axis, between said first axial portion and said second peripheral portion.
  • said first axial portion and said second peripheral portion are coaxial in the free state, and said elastic return means are further arranged to coaxially retain said first axial portion and said second peripheral portion during deformation of said elastic return means.
  • the invention also relates to a watch movement comprising such an oscillating mechanism.
  • the invention also relates to a timepiece comprising such an oscillating mechanism.
  • the invention also relates to the use of such a mobile power transmission to decouple the inertia of a part of a cog in a watch movement comprising on the one hand an exhaust and on the other hand a second mobile greater inertia than that of said escapement, by the interposition of said mobile energy transmission either directly or in a train, between said exhaust and said second mobile, so as to allow a rapid pivoting of said exhaust before said second mobile be set in motion at each impulse.
  • the invention relates to the field of micro-mechanics, and more particularly the field of watchmaking.
  • the invention relates to an oscillating mechanism 1 for a 1000 clock movement.
  • This oscillating mechanism 1 comprises a first rigid element 200 and a second rigid element 600, each arranged to be fixed to a different element of the movement 1000 and at least one of which is movable with respect to the other and pivots around a theoretical pivot axis D.
  • this oscillating mechanism 1 is flexible with variable geometry, while being made integrally. It comprises first elastic return means 300 providing a direct or indirect elastic connection between the first rigid element 200 and an intermediate rigid element 400. It comprises at least second elastic return means 500 providing a direct or indirect elastic connection between this element rigid intermediate 400 and the second rigid element 600.
  • first rigid element 200, the first elastic return means 300, the intermediate rigid element 400, the second elastic return means 500, and the second rigid element 600 are coplanar in a plane P, and are arranged to deform preferably according to the plane P.
  • the first elastic return means 300 comprise at least one elastic blade 301
  • the second elastic return means 500 comprise at least one elastic blade 501.
  • the first elastic return means 300 comprise a plurality of elastic blades 301 substantially radial with respect to the pivot axis D
  • the second elastic return means 500 comprise a plurality of substantially radial resilient blades 501 by relative to the pivot axis D.
  • the first means of resilient return 300 and / or the second resilient return means 500 comprise a plurality of elastic blades forming dihedral radii substantially radial with respect to the pivot axis D, and whose tip of the Ve is directed towards the pivot axis D.
  • the first elastic return means 300 and / or the second elastic return means 500 comprise at least one rigid element 700 interposed between two elastic elements 800.
  • the oscillating mechanism 1 is symmetrical with respect to a plane of symmetry PS, passing through the pivot axis D and perpendicular to the plane P:
  • an advantageous embodiment of the invention is that in which the oscillating mechanism 1 adopts a butterfly-type configuration, comprising at least one intermediate rigid element 400, constituted by at least one rigid arm 3 extending between the first rigid element 200 disposed in the vicinity of the pivot axis D and the second rigid element 600 constituting a peripheral portion, to which it is connected respectively by the first elastic return means 300 constituted by at least a first elastic blade 8, and by the second means of elastic return 500 constituted by at least a second elastic blade, the rigid portion 3 constituting an intermediate mass movable substantially pivotally about the pivot axis D.
  • the variant not included in the invention visible on the figure 6 is that in which the oscillating mechanism 1 adopts a four-neck RCC type configuration, comprising two such intermediate rigid elements 400 forming two non-aligned arms 7 each extending between the first rigid element 200 disposed in the vicinity of the pivot axis D and the second rigid element 600 constituting a peripheral portion 6, to which it is connected respectively by the first elastic return means 300 constituted by at least a first elastic blade 8, and by the second elastic return means 500 constituted by at least one second elastic blade.
  • the first resilient return means 300 and / or the second elastic return means 500 have limited angular deflection by angular deflection limiting means.
  • the second rigid element 600 constitutes an immovable anchorage relative to a plate or a bridge that includes the movement 1000.
  • the first rigid element 200 can also constitute this anchoring.
  • the rigid element which does not constitute the anchor here the first rigid element 200 in the case of the figures, comprises means for receiving a pulse exerted against the first elastic return means 300 and second elastic return means 500.
  • the elastic return means 10 constitute a virtual pivot elastic, which exempts the oscillating mechanism 1 of any fixation on shaft or pivot.
  • the elastic return means 10 comprise means for balancing the forces exerted on the first rigid element 200, and / or on the intermediate rigid element 400, and / or on the second rigid element 600, to maintain its axis. instantaneous pivoting closer to the pivot axis D.
  • the oscillating mechanism 1 comprises stop means or at least one pawl, so as to retain in the spaced apart position of its equilibrium position, or all or part of the elements that make up the elastic return means 10, or else / and the first rigid member 200, or / and the second rigid member 600.
  • the oscillating mechanism 1 is monobloc and made of a micro-machinable material, or silicon, or silicon oxide, or quartz, or one of their compounds, or a alloy derived from MEMS technology, or an alloy as obtained by the "LIGA" process, or a combination of these materials.
  • the material chosen is a rigid Young modulus material greater than 80000 MPa.
  • Such micro-machinable materials are particularly suitable for a layered embodiment as presented above, with at least two layers, for example two layers. or three layers on which are distributed and chained to each other, the various components of the elastic return means 10.
  • the intermediate rigid element 400 constituted by a first component 3, is a beam shank of a rotary mechanical oscillator with its elastic center, of a setting timepiece assembly.
  • the first rigid element 200, or the second component 5 is a balance plate, and comprises a plateau pin 22 arranged to cooperate with an anchor as visible on the figure 4 .
  • the second rigid element 600 is secured to an anchor rod 23 of an anchor, or to a Swiss anchor, or to a trigger anchor, to an elastic pivot, to a timepiece escapement mechanism . This replaces the anchor rod.
  • the oscillating mechanism 1 constitutes an escape-oscillator block arranged to regulate the running of a timepiece. It then advantageously comprises a bore for centering an escape wheel arranged to provide the energy necessary for the maintenance of the oscillation, which makes it possible, in a preferred embodiment of a micro-machining material, to guarantee a very high degree of efficiency. high relative positioning accuracy of the movable members between them.
  • the oscillating mechanism 1 is produced in the two parts of an "SOI” wafer, namely “device” for the anchor and its elastic pivot, and for the rotary mechanical oscillator and its elastic center, and “Handle” for anchoring the anchor and the mechanical oscillator and for the centering bore of an escape wheel.
  • the oscillating mechanism 1 constitutes an escapement of a striking mechanism for a timepiece.
  • the oscillating mechanism 1 constitutes an escape wheel located between a cylinder and an anchor at the interface between a pinion and an escape wheel of an escapement mechanism. for timepiece.
  • the oscillating mechanism 1 constitutes a chronograph mechanism clutch for a part watchmaking.
  • the oscillating mechanism 1 comprises at least one anchor 2 to an external device, in particular a plate or a bridge of a movement 1000.
  • This anchor 2 constitutes the second rigid element 600.
  • the intermediate rigid element 400 of the oscillating mechanism 1 comprises a first component 3 movable at least pivotally about a first instantaneous pivot axis in the vicinity of a theoretical axis of pivoting D fixed and fixed position relative to this anchor 2, or as the case may be.
  • these anchorages 2 if there are more than one, as in the case of Figures 1 to 3 where two anchors 2 are shown.
  • the first rigid element 200 of the oscillating mechanism 1 comprises a second component 5 in the vicinity of this axis D.
  • the first component 3 and the second component 5 are connected directly or indirectly to one another and one of them, first component 3 or second component 5, comprises means for receiving a pulse generated by external or internal motor means to the oscillating mechanism 1.
  • This pulse is exerted against elastic return means 10, which comprises the oscillating mechanism 1, and which are arranged to oscillate the first component 3 about the first instantaneous axis of pivoting.
  • the oscillating mechanism 1 is in one piece, and the only means for fixing the oscillating mechanism 1 to an external device are constituted by the anchor 2, or, as the case may be, the anchors 2.
  • the elastic return means 10 constitute a pivot virtual elastic, which dispenses the oscillating mechanism 1 of any fixation on shaft or pivot.
  • these elastic return means 10 comprise means for balancing the forces exerted on the first component 3 to maintain the first instantaneous axis of pivoting closest to the theoretical axis of pivoting D.
  • the elastic return means 10 comprise at least one first elastic element 11 whose angular displacement is limited to the value of a pivoting stroke of the first component 3.
  • This pivoting stroke of the first component 3 is itself determined by first angular deflection limiting means 17 with respect to each radial coming from the axis D and joining each anchor 2.
  • each first elastic element 11 is of stiffness much lower than that of the first component 3, in a ratio less than 0.30 relative to that of the first component 3.
  • first elastic element 11 extends radially with respect to the axis D and from the anchor 2, to the first component 3 as visible on the figure 1 , or to a third component 6 connected directly or indirectly to the first component 3 as visible on the figure 2 .
  • the first elastic element 11 is called a dihedron and is in the shape of a vee or vee truncated. The tip of this vee is directed towards the axis D.
  • the first elastic element 11 comprises a first elastic arm 12 which extends radially with respect to the axis D, from the anchor 2 to the axis D, until to a connecting surface 7 located near the second component 5. This connecting surface 7 can be reduced to its simplest expression, that is to say point.
  • the first elastic element 11 further comprises a second elastic arm 13 extending radially with respect to the axis D, from the connecting surface 7, to the first component 3, or to a third component 6 which is connected directly or indirectly to the first component 3 as visible on the figure 2 .
  • the first elastic arm 12 and the second elastic arm 13 are identical. Preferably, they are symmetrical with respect to a radial resulting from the theoretical axis D.
  • the elastic return means 10 comprise at least a second elastic element 14 interposed directly or indirectly between the first elastic element 11 and the first component 3.
  • the angular displacement of the second elastic element 14 is limited to the difference between, the pivoting stroke of the first component 3 determined by the angular deflection limiting means 17 on the one hand, and the angular deflection allowed by the first elastic element 11 on the other hand. It will be understood that, with regard to the angular pivoting displacement of the first component 3, it is substantially equal to the sum of the angular deflections of the first component 3. elastic element 11 and the second elastic element 14 associated together.
  • this first element 11 and this second element 14 are of similar geometry and stiffness characteristics, have a displacement of approximately +/- 15 ° each, the first component 3 then has a displacement of about +/- 30 °.
  • each second elastic element 14 is advantageously of much lower stiffness than that of the first component 3, in a ratio of less than 0.30 with respect to that of the first component 3.
  • the oscillating mechanism 1 comprises at least a third component 6 connected to the anchor 2 by at least one first elastic element 11, and to the first component 3 by at least one second elastic element 14.
  • all the first elastic elements 11 of the same oscillating mechanism 1 are identical.
  • all the second elastic members 14 of the same oscillating mechanism 1 are identical.
  • all the third components 6 of the same oscillating mechanism 1, when it comprises, are identical.
  • the second elastic element 14 like the first elastic element 11, it preferably extends radially with respect to the axis D and since, or the first elastic element 11 or a third component 6 interposed between the second component 5 and the first component 3, to the first component 3.
  • the second elastic element 14 is vee-shaped or vee truncated.
  • the tip of this vee is directed towards the axis D.
  • the second elastic element 14 comprises a first elastic arm 15 extending radially with respect to the axis D since, or the first elastic element 11 or the third component 6 , towards the axis D, to a connecting surface 7A located near the second component 5.
  • it further comprises a second elastic arm 16 extending radially relative to the axis D from the connecting surface 7A up to to the first component 3 or to another component connected directly or indirectly to the first component 3.
  • the connecting surface 7A can also be reduced to its simplest expression, that is to say point.
  • the first elastic arm 15 and the second elastic arm 16 are identical. Preferably, they are symmetrical with respect to a radial from the axis D.
  • the first elastic arm 12 and the second elastic arm 13 of the first elastic element 11, and the first elastic arm 15 and the second elastic arm 16 of the second elastic element 14 are all identical to each other. Preferably, they are symmetrical two by two with respect to a radial from the axis D.
  • the first component 3 is rigidly connected to the second component 5 by at least one arm 8, and preferably by a plurality of arms 8.
  • each arm 8 is of greater rigidity than that of each of the return means elastic 10.
  • the oscillating mechanism 1 comprises at least a third component 6 connected to the anchor 2 by at least one first elastic element 11, and to the first component 3 by at least one second elastic element 14.
  • the third component 6 is rigidly connected to the second component 5 by at least one rigid arm 8.
  • the second component 5 constitutes, with the third component 6, or as the case the third components 6, and with the arm 8, or as the case 8 arms, a second mobile frigid which is pivotally movable about a second instantaneous axis of pivoting very close to the axis D.
  • the resilient return means 10 comprise means for balancing the forces exerted on the second mobile to maintain the second instantaneous axis of pivoting closest to the theoretical axis of pivoting D.
  • the oscillating mechanism 1 comprises two anchors 2; 2A to an external device, for example to a fixed point of a plate, or other.
  • These two anchors 2, 2A are preferably symmetrical with respect to the axis D.
  • the oscillating mechanism 1 in the free state and at rest, is symmetrical with respect to to a plane of symmetry PS, here P1, perpendicular to the axis D and passing through at least one anchorage 2.
  • the oscillating mechanism 1, in the free state and at a standstill is preferably symmetrical with respect to another plane of symmetry PS, here a plane P2 perpendicular to the axis D and perpendicular to a straight line joining the two anchors 2,2A, when it has two so arranged.
  • the oscillating mechanism 1 in the free state and at rest, is symmetrical with respect to the axis D.
  • the oscillating mechanism 1 may comprise a plurality of anchors 2 to an external device, equidistant from each other and with respect to the axis D.
  • the oscillating mechanism 1 comprises a plurality of first elastic elements 11, grouped two by two on each side of each anchor 2.
  • the oscillating mechanism 1 comprises a plurality of second elastic elements 14, which are grouped two by two on either side of at least one bearing zone 19, by which these second elastic elements 14 are attached to the first component 3 .
  • the oscillating mechanism 1 comprises at least one third component 6 connected to the anchor 2 by at least one first elastic element 11, and to the first component 3 by at least one second elastic element 14, it advantageously comprises, at the level of the first component 3, second angular displacement limitation means 18 of the third component 6.
  • the anchor 2 is still other means for limiting the angular clearance of the third component 6 at side faces 6A, 6B.
  • the radius of inertia of the first component 3 with respect to the axis D is greater than that of the second component 5 with respect to the same axis.
  • the first component 3 and the second component 5 are made in the form of a trellis of thin blades or thin flexible blades.
  • third component 6 is made in the form of a lattice of thin blades or thin flexible blades.
  • the first component 3 and the third component 6 can also be dense, depending on the desired level of inertia for these components.
  • the elastic deformation of the components of the oscillating mechanism 1 is essentially flat, all the components deforming elastically in the same plane or in planes parallel to each other.
  • the oscillating mechanism 1 while keeping a substantially flat first component 3, it is possible, in an alternative embodiment not illustrated by the figures, to arrange the oscillating mechanism 1, so that the elastic deformation of some of its components comprises a component according to a normal to the plane P of the first component 3.
  • the elastic return means 10 are distributed over several parallel layers, and the elements that compose them are arranged and joined to each other so as to allow a angular displacement of the first movable component 3 of greater amplitude than that which is allowed by the movements of the components, and by the stop positions they can represent for each other. It is thus possible to realize any amplitude, in particular greater than a 360 ° revolution of the first component 3.
  • the oscillating mechanism 1 comprises stop means or at least one pawl, so as to retain in position spaced from its equilibrium position all or part of the elements that make up the elastic return means 10, or so as to retain the position of the first movable component 3 away from its equilibrium position, or so as to retain the second mobile in its position away from its equilibrium position.
  • the invention relates to the use of such an oscillating mechanism 1 for the production of a power transmission mobile 100 for decoupling the inertia of a part of a cog in a watch movement 1000 or a part of watchmaker 10000.
  • the invention relates to the application of such an energy transmission mobile to a constant force mechanism, where the mobile of energy transmission 100 constitutes a reservoir of energy, called "buffer", between the barrel and the escapement of a timepiece, thereby transmitting a constant torque to the exhaust.
  • the mobile according to the invention will easily use the mobile according to the invention to integrate it with a constant-force device Type Jeanneret, as described by document "The general theory of watchmaking, by Léopold Defossez, Swiss Chamber of Watchmaking, La Chaux-de-Fonds", volume II, page 129 .
  • the invention allows, again, the decoupling of the inertia of a part of a cog: in the case of a vortex, for example, the inertia of the cog in motion at each pulse is large, and penalizes the performance of the exhaust.
  • a flexible wheel according to the invention interposed between the high inertia elements and the exhaust, allows the exhaust to move quickly before the large inertia is set in motion, thereby improving the efficiency of the exhaust .
  • This application is particularly innovative, and uses with advantage the compactness of the mobile according to the invention.
  • the invention relates to a power transmission mobile 100 for a watch movement 1000, and this mobile power transmission 100 comprises such an oscillating mechanism 1 between at least a first mobile transmitter 2E of said movement 1000 of a on the one hand, and at least one second mobile receiver 3R of the movement 1000 on the other hand.
  • the mobile 1 comprises at least one degree of freedom in pivoting about the theoretical axis of pivoting D.
  • the first elastic return means 300 and the second elastic return means 500 together constitute elastic return means 10 providing a direct or indirect elastic connection between a first axial portion 200 and a second peripheral portion 600.
  • the first axial portion 200 is located in the vicinity of the pivot axis D and cooperates with the first mobile transmitter 2E or the second mobile receiver 3R respectively, and the second peripheral portion 600 is radially away from the pivot axis D and cooperates with the second mobile receiver 3R or respectively the first mobile transmitter 2E.
  • These elastic return means 10 are arranged for, as the case may be, absorb, store or release energy during an angular deflection in pivoting around a secondary axis D1 parallel to or coinciding with the pivot axis D, between the first axial portion 200 and the second peripheral portion 600.
  • the first axial portion 200 and the second peripheral portion 600 are coaxial in the free state, and the elastic return means 10 are still arranged to maintain the coaxial first axial part 200 and the second peripheral part 600 during the deformation of the elastic return means 10.
  • the second peripheral portion 600 is rigid and dimensionally stable
  • the elastic connection produced by the elastic return means 10 is substantially flat in a plane perpendicular to the theoretical axis of pivoting D.
  • the angular deflection in pivoting of the second peripheral portion 600 is several degrees or several tens of degrees.
  • the elastic return means 10 comprise at least one arm 70 extending between said first axial portion 200 and said second peripheral portion 600, and this arm 70 comprises at least one elastic portion.
  • the arm 70 is elastic.
  • the elastic return means 10 comprise at least one arm 70 comprising at least one rigid portion 120 extending between the first axial portion 200 and the second peripheral portion 600 to which it is connected respectively by at least a first elastic blade 80 and at least one second elastic blade 90.
  • the elastic return means 10 comprise a plurality of such arms 70 located in planes parallel to each other or to each other and all perpendicular to the theoretical axis of pivoting D.
  • the elastic return means 10 comprise at least one arm 70 comprising a plurality of rigid portions 120 extending between the first axial portion 200 and the second peripheral portion 600 to which they are connected respectively by at least a first elastic blade 80A of a first rigid portion 120A and at least a second elastic blade 90B of a second said rigid portion 120B, these rigid portions 120 being connected to each other exclusively by an elastic portion 130 .
  • this elastic part 130 comprises at least one elastic blade 140.
  • the energy transmission mobile 100 adopts a butterfly-type configuration comprising at least one arm 70 comprising at least one rigid portion 120 extending between said first axial portion 200 and said second peripheral portion 600 to which it is respectively connected by the less a first resilient blade 80 and at least a second resilient blade 90, the rigid portion 120 constituting an intermediate mass movable substantially pivotally about the theoretical axis of pivoting D.
  • the power transmission mobile 100 adopts a four-necked RCC-type configuration, comprising two non-aligned arms 70 each having at least one rigid portion 120 extending between the first axial portion 200 and the second peripheral portion 600, to which it is connected respectively by at least a first elastic blade 80 and by at least a second elastic blade 90.
  • the two arms 70 form between them an angle centered substantially on the theoretical axis of pivoting D and close to 90 °.
  • the elastic return means 10 have an angular displacement limited to a pivoting stroke of the first portion 200 relative to the second portion 600 determined by angular displacement limiting means.
  • the elastic return means 10 have a stiffness much lower than that of the first part 200 and the second part 600, in a ratio less than 0.30 compared to the lowest stiffness of the first part 200 or part two 600.
  • the elastic return means 10 consist of substantially radial blades with respect to the theoretical axis of pivoting D.
  • At least one of the elastic return means is in the form of a spiral spring.
  • the oscillating mechanism 1 is a monobloc balance-spring balance or silicon or the like.
  • the energy transmission mobile 100 is made of a micro-machinable material, or silicon, or quartz, or one of their compounds, or an alloy derived from MEMS technology, or an alloy such as obtained by the "LIGA" process, or an at least partially amorphous material. In a particular embodiment, it is made of a combination of some of these materials, the material being a rigid Young modulus material greater than 80000 MPa.
  • the invention also relates to a watch movement 1000 comprising at least one such mobile energy transmission 100.
  • the invention also relates to a timepiece 10000 comprising at least one such movement, and / or at least one such mobile energy transmission 100, or / and at least one such oscillating mechanism 1.
  • the invention overcomes the difficulties of manufacture and adjustment, or assembly and pitonnage, which are related to certain components such as spiral springs. It provides a very compact solution to the problem of producing mechanical oscillators mass-spring type.
  • the invention allows the realization of a mechanism of very small thickness, and authorizes new possibilities for equipping timepieces, particularly with complications always consuming volume. The possibility of getting rid of the pivots represents a great technological progress in watchmaking.
  • the accuracy of realization is very high thanks to the use of micro-machinable materials, in particular silicon or silicon oxide, or similar.
  • the control of the masses, and especially the inertia, is total. This means that a direct consequence of the implementation of the invention is a very great simplification of the settings on a timepiece, or even a deletion of the settings.
  • the invention also relates to the use of such a power transmission mobile 100 to decouple the inertia of a part of a cog in a watch movement comprising on the one hand an exhaust and on the other hand a second movable inertia greater than that of said exhaust, by the interposition of said energy transmission mobile 100 either directly or in a train, between said exhaust and said second mobile, so as to allow a rapid pivoting of said exhaust before said second mobile is set in motion at each pulse.
  • the invention also relates to the use of a mobile energy transmission 100, wherein said second mobile is a vortex or a carousel.
  • the invention also relates to the use of a power transmission mobile 100, wherein said exhaust comprises an escape wheel constituted by such a power transmission mobile 100.
  • the invention also relates to the use of such a power transmission mobile 100 for absorbing excess energy in a clockwork train, when a torque transmitted to the wheel by a shock or a strong acceleration or during the resting of the exhaust is momentarily much higher than the torque of a barrel supplying said energy movement, realizing at least one of the elements of said wheel under the shape of a so-called mobile energy transmission 100.
  • the invention also relates to the use of such a power transmission mobile 100 for a said watch movement comprising an escapement, characterized in that said exhaust comprises an escape wheel constituted by a said transmission of energy transmission 100.
  • the invention also relates to the use of such a power transmission mobile 100 to absorb excess energy in a clockwork movement comprising a gear train and at least one friction coupling, when a torque transmitted to the wheel by a shock or a strong acceleration or during the quiescent of the exhaust is momentarily much higher than the torque of a cylinder supplying said energy movement, realizing at least one of the elements of said train in the form of a said transmission mobile of energy 100, to decrease the instantaneous torque peak transmitted through said friction coupling.
  • the invention also relates to the use of such a power transmission mobile 100 for a said chronograph watch movement comprising at least one friction coupling.
  • the invention also relates to the use of such a mobile energy transmission 100 for a watch movement comprising, between an energy storage cylinder and an exhaust, a train comprising at least one said mobile energy transmission 100 to constitute a buffer energy reservoir between said cylinder and said exhaust, to transmit a constant torque to said exhaust.
  • the invention also relates to the use of such a mobile energy transmission 100 for a watch movement comprising two boards interconnected by an angular return spring constituted by a said mobile energy transmission 100, to take into account sandwich the teeth of a pinion, and constitute a gear mechanism without play.
  • the invention also relates to the use of such a power transmission mobile 100 in a watch movement in which said first mobile transmitter 2E or said second mobile receiver 3R said movement 1000 is held fixed in anchorage relative to a platinum or at a bridge that includes said watch movement.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Micromachines (AREA)
  • Transmission Devices (AREA)
EP11733619.8A 2010-07-19 2011-07-04 Mecanisme oscillant a pivot elastique et mobile de transmission d'energie Active EP2596406B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP11733619.8A EP2596406B1 (fr) 2010-07-19 2011-07-04 Mecanisme oscillant a pivot elastique et mobile de transmission d'energie
EP15153532.5A EP2894520A3 (fr) 2010-07-19 2011-07-04 Mécanisme oscillant à pivot élastique et mobile de transmission d'énergie

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH11982010A CH703464B1 (fr) 2010-07-19 2010-07-19 Mécanisme oscillant à pivot élastique.
EP10191774.8A EP2455821B2 (fr) 2010-11-18 2010-11-18 Mobile de transmission d'énergie
EP11733619.8A EP2596406B1 (fr) 2010-07-19 2011-07-04 Mecanisme oscillant a pivot elastique et mobile de transmission d'energie
PCT/EP2011/061244 WO2012010408A1 (fr) 2010-07-19 2011-07-04 Mecanisme oscillant a pivot elastique et mobile de transmission d'energie

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP15153532.5A Division EP2894520A3 (fr) 2010-07-19 2011-07-04 Mécanisme oscillant à pivot élastique et mobile de transmission d'énergie
EP15153532.5A Division-Into EP2894520A3 (fr) 2010-07-19 2011-07-04 Mécanisme oscillant à pivot élastique et mobile de transmission d'énergie

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EP2596406A1 EP2596406A1 (fr) 2013-05-29
EP2596406B1 true EP2596406B1 (fr) 2019-03-27

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EP15153532.5A Withdrawn EP2894520A3 (fr) 2010-07-19 2011-07-04 Mécanisme oscillant à pivot élastique et mobile de transmission d'énergie
EP11733619.8A Active EP2596406B1 (fr) 2010-07-19 2011-07-04 Mecanisme oscillant a pivot elastique et mobile de transmission d'energie

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US (1) US9201398B2 (zh)
EP (2) EP2894520A3 (zh)
JP (1) JP5551312B2 (zh)
CN (1) CN103097965B (zh)
HK (1) HK1185155A1 (zh)
WO (1) WO2012010408A1 (zh)

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Also Published As

Publication number Publication date
JP5551312B2 (ja) 2014-07-16
CN103097965B (zh) 2015-05-13
EP2894520A3 (fr) 2016-06-22
EP2894520A2 (fr) 2015-07-15
US20130176829A1 (en) 2013-07-11
JP2013531257A (ja) 2013-08-01
WO2012010408A1 (fr) 2012-01-26
EP2596406A1 (fr) 2013-05-29
CN103097965A (zh) 2013-05-08
US9201398B2 (en) 2015-12-01
HK1185155A1 (zh) 2014-02-07

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