• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a timepiece resonator (100) comprising an inertial element (4; 5) suspended from a flexible blade (2) deformable in a plane XY parallel to a longitudinal direction and whose transverse extension along a transverse axis, in projection on this plane XY is variable and of positive value on at least one side of the neutral fiber of said blade (2) which comprises, at a distance from its recesses (41; 51), a plurality of ribs (3) s' extending substantially along an axis Z perpendicular to the plane, each comprising at least one generator which is further from the neutral fiber than are the external surfaces of the sections (6) of the blade (2) situated outside the ribs (3) , and the longitudinal extension of each rib (3) of the blade (2), along the longitudinal axis, is less than one fifth of the length of the blade (2) between its recesses (41; 51), the number is greater than or equal to the difference between on the one hand the quotient between said long ueur and the height H of the blade (2), and on the other hand a unit,
    公开号:CH715641A2
    申请号:CH01430/19
    申请日:2019-11-11
    公开日:2020-06-15
    发明作者:Winkler Pascal；Klinger Laurent；Helfer Jean-Luc；Hinaux Baptiste；Di Domenico Gianni；Peters Jean-Bernard
    申请人:Eta Sa Mft Horlogere Suisse；
    IPC主号:
    专利说明:

    Field of the invention
    The invention relates to a timepiece resonator comprising, between a first element and a second element of which at least one of the two constitutes an inertial element movable within said resonator, at least one flexible guide constituting a return means elastic of said inertial element within said resonator and comprising at least one flexible blade joining a first recess of said first element to a second recess of said second element, said first recess defining with said second recess a direction of blade, said first element and said second element each being more rigid than each said at least one flexible blade, said at least one flexible blade being arranged to deform essentially in an XY plane parallel to said blade direction, and comprising a first dimension L called length along a first longitudinal axis Y parallel to said blade direction, a second dimension E called thickness according to a second transverse X axis orthogonal to said first Y axis in said XY plane, and a third dimension H called height along a third Z axis orthogonal to said XY plane, said first dimension L being greater than said third dimension H which is greater than said second dimension E, said at least one blade extending substantially in the form of a ribbon around or on either side of a geometric neutral fiber joining said first recess and said second recess, and comprising at least one median zone extending transversely, along said second axis X, on either side of said neutral fiber and whose thickness is a nominal thickness EN.
    The invention also relates to a timepiece, in particular a watch, comprising at least one such resonator.
    The invention relates to the field of timepieces with mechanical oscillator, and in particular the field of watches, where the flexible guides according to the invention make it possible to guarantee both isochronism and insensitivity to positions in space.
    Invention background
    Traditionally, a mechanical watch includes an oscillator comprising a balance-spring, which is responsible for the good chronometric precision of the watch.
    Schematically, the mechanical oscillator performs three basic functions with:<tb> - <SEP> guide means, arranged to limit the degrees of freedom;<tb> - <SEP> inertial means;<tb> - <SEP> elastic return means.
    More particularly for the balance spring, these elementary functions are carried out by, respectively:<tb> - <SEP> pivots, conventionally in ruby bearings;<tb> - <SEP> the pendulum serge;<tb> - <SEP> the spiral spring.
    The accuracy of traditional mechanical watches is limited by the differences in friction of the pendulum pivots, according to the different positions that the watch can take in space.
    Therefore, we focus on developing oscillators without friction pivots.
    A very promising way to get rid of the friction of the pivots is that of oscillators with flexible guides, in which a flexible guide fulfills two elementary functions at the same time: on the one hand the guiding function and, on the other hand , the force or elastic return torque function.
    In the case of the mechanical watch, a flexible rotary guide is preferred, so that the translation shocks do not disturb the oscillator, and care is taken to place the center of mass of the inertial element on the axis virtual defined by said flexible guidance.
    Non-limiting examples of flexible rotary guides are described in documents EP3035126, EP3206089, and EP18179623, all in the name of THE SWATCH GROUP RESEARCH & DEVELOPMENT Ltd. There is now a wide variety of flexible rotary guides, the production of which has been made possible by the "LIGA" and "DRIE" technology.
    Document WO2018 / 100122A1 in the name of LVMH describes a device for a timepiece comprising a base, an inertia regulating member rotatably mounted relative to the base, by means of an elastic suspension means connecting the regulatory body at the base. The regulating member comprises a number n of rigid parts connected in pairs by means of n elastic coupling links. The elastic suspension means comprises n elastic suspension links connecting each rigid part individually to the base.
    Document EP3001257A1 in the name of ETA Manufacture Horlogère Suisse describes a timepiece resonator comprising a mass connected, by flexible blades, to attachment points of a fixed structure, and subjected to a torque or / and a effort, this resonator being arranged to oscillate with at least two degrees of freedom in translation, and the flexible blades being arranged to maintain oscillations of this at least one mass around a virtual pivot. These flexible blades have long arms, each of a length developed at least twice greater than the shortest distance between the mass and the attachment points.
    Document CH712068A2 in the name of ETA Manufacture Horlogère Suisse describes a watchmaking resonator mechanism with a pivoting mass, pivoting around a virtual axis, and comprising a flexible pivoting guide mechanism and first and second fixed supports to which is fixed, by a first elastic assembly and respectively a second elastic assembly which together define this virtual axis, a rotary support carrying this pivoting mass. This flexible pivoting guide mechanism is plane, the first elastic assembly comprises, on either side of the virtual axis, and joined by a first intermediate blade more rigid than each of them, a first external flexible blade and a first internal flexible blade together defining a first direction passing through the virtual axis, and the second assembly comprises a second flexible blade defining a second direction passing through the virtual axis.
    The document EP2975470A1 in the name of NIVAROX SA describes an elastic guiding device in rotation for a clockwork mechanism allowing the rotation of one element relative to another around an axis of rotation defining an axial direction, comprising construction blades, each comprising an assembly fixing part comprising a body and a functional part extending from the body to one end, the fixing part of the assembly and the functional part being separated by at least one slot in at least two elastically connected extensions which extend in a radial direction transverse to the axial direction, the device further comprising anchoring zones arranged at opposite axial ends of the flexible guide device, and configured to be fixed to said said organs. The assembly securing portion of each of the construction blades includes an assembly cavity or clearance and an assembly extension which interlock and interlock in a radial direction to be locked together. In order to guarantee the precision of the mechanical watch, an attempt is made to define a flexible rotary guide whose return torque is proportional to the angle of elongation, so that the period does not depend on the amplitude of oscillation, and whose the parasitic displacements of the virtual center of rotation are the smallest, so that the period does not depend on the orientation of the watch. In addition, guidance is sought which allows large amplitudes without the stresses in the material producing the rupture.
    In practice, to ensure the guiding function of such a flexible guide, it is known to use at least two flexible blades combined in parallel, as for example in a pivot with crossed blades in projection. But the most basic form of flexible rotary guide is a single blade which works in pure bending, and which remains a solution not to be overlooked.
    As a first approximation, if a substantially flat blade is subjected at a time, it deforms in an arc, and its end defines an angle proportional to the moment applied.
    In reality, the bent blade has a slight anticlastic curvature. The anticlastic curvature is due to the fact that the fibers outside the neutral fiber of the blade in bending, must lengthen and therefore, also contract in the directions orthogonal to the neutral fiber, and, conversely, the fibers inside the fiber neutral are contracted and therefore, extend orthogonally.
    The magnitude of these orthogonal deformations is described by the Poisson's ratio. If the volume of the material is maintained, the Poisson's ratio is 0.5. For most common materials, the Poisson's ratio is closer to the value 0.3.
    The magnitude of the anticlastic curvature depends on the local bending curvature, the Poisson's ratio of the material, the relationships between the three main dimensions of the blade, and the geometries of the embedments.
    The dependence of the anticlastic curvature on the bending angle causes, if no care is taken, a non-linearity in the relationship between the bending angle and the applied moment.
    This effect is very weak, but for a mechanical watch oscillator, one thousandth of a non-linearity results in an error of the order of 100 seconds per day of operation.
    It should also be noted that it is sometimes sought to control the non-linearity rather than cancel it, for example, to compensate for an anisochronism caused by the exhaust used.
    Summary of the invention
    The invention proposes to define a flexible guide for a mechanical oscillator, which is as little as possible subject to the anticlastic curvature.
    The invention proposes to provide the flexible blade with adequate relief, in particular ribs, in order to control the anticlastic curvature, without significantly degrading the elastic performance of the flexible blade.
    More particularly, several ribs are distributed along the flexible blade and extend along the height thereof, in order to stiffen it to limit the anticlastic curvature, without greatly limiting its expected qualities of bending.
    To this end, the invention relates to a timepiece resonator according to claim 1.
    The invention also relates to a timepiece, in particular a watch, comprising at least one such resonator.
    Brief description of the drawings
    Other characteristics and advantages of the invention will appear on reading the detailed description which follows, with reference to the accompanying drawings, where:<tb> - <SEP> Figures 1 to 3 show, schematically, a flexible blade subject to an anticlastic curvature:<tb> - <SEP> FIG. 1 is a detail showing the opposite curvatures which contradict each other in the median zone of the blade at equal distance from the embedments;<tb> - <SEP> Figure 2 is a top view of this blade,<tb> - <SEP> and FIG. 3 is a perspective view of this same blade showing the parasitic curvature in the middle of the blade;<tb> - <SEP> FIG. 4 represents, in a similar manner to FIG. 3, a conventional straight flexible blade between two recesses, in the unconstrained free state;<tb> - <SEP> Figures 5 and 6 show, similarly to Figures 3 and 2, a flexible blade according to the invention, equipped with ribs extending over its height, shown in bending;<tb> - <SEP> FIG. 7 is a diagram of a resonator with flexible guidance with a blade, with the ordinate the march in seconds per day, according to its amplitude in degrees on the abscissa, for different numbers of sections between the ribs with which a blade similar to that of FIGS. 5 and 6 is fitted;<tb> - <SEP> FIG. 8 is a flow diagram of a resonator with flexible guidance with a blade illustrating its anisochronism, between 20 ° and 10 ° of amplitude, with on the ordinate the march in seconds per day, in function of the number of sections of the resonator blade on the abscissa;<tb> - <SEP> Figures 9 and 10 show, similarly to Figures 6 and 5, a flexible blade whose ribs are arranged so as to constitute a wavy blade whose neutral fiber is not included in the thickness of the blade, which blade crosses this neutral fiber only at the inflection zones of the corrugation;<tb> - <SEP> Figures 11 and 12 show, similarly to Figures 9 and 10, a flexible blade whose ribs are arranged so as to constitute a wavy blade whose neutral fiber is included in the thickness of the blade, which thus retains its maximum rigidity in traction;<tb> - <SEP> FIGS. 13 to 31 represent, in a similar manner to FIG. 5, different variant embodiments of flexible blades according to the invention:<tb> - <SEP> FIG. 13: straight parallelepiped ribs over the entire height of the blade, in symmetry with respect to the neutral fiber;<tb> - <SEP> figure 14: diamond-shaped prismatic ribs, over the entire height of the blade, in symmetry with respect to the neutral fiber;<tb> - <SEP> Figure 15: tubular ribs over the entire height of the blade, in symmetry with respect to the neutral fiber;<tb> - <SEP> FIG. 16: prismatic ribs based on an ellipse, over the entire height of the blade, in symmetry with respect to the neutral fiber;<tb> - <SEP> Figure 17: straight parallelepiped ribs over the entire height of the blade, alternating with respect to the neutral fiber at a regular pitch;<tb> - <SEP> figure 18: prismatic ribs based on a half-ellipse, over the entire height of the blade, and on only one side of it;<tb> - <SEP> figure 19: prismatic ribs based on a trapezoid, over the entire height of the blade, and on only one side of it;<tb> - <SEP> FIG. 20: prismatic ribs based on sinusoidal undulation, over the entire height of the blade, alternating with respect to the neutral fiber at a regular pitch, and overhanging the neutral fiber;<tb> - <SEP> FIG. 21: prismatic ribs based on a line broken in a zig-zag, over the entire height of the blade, alternating with respect to the neutral fiber at a regular pitch, and overhanging the neutral fiber;<tb> - <SEP> Figure 22: prismatic ribs in cylindrical sectors, over the entire height of the blade, alternating with respect to the neutral fiber at a regular pitch, and overhanging the neutral fiber;<tb> - <SEP> figure 23: prismatic ribs in crenellations, over the entire height of the blade, alternated with respect to the neutral fiber at a regular pitch, and overhanging the neutral fiber;<tb> - <SEP> figure 24: prismatic ribs based on sinusoidal undulation, over the entire height of the blade, alternating with respect to the neutral fiber at a regular pitch, and covering the neutral fiber;<tb> - <SEP> Figure 25: prismatic ribs in cylindrical sectors, over the entire height of the blade, alternating with respect to the neutral fiber at a regular pitch, and covering the neutral fiber;<tb> - <SEP> figure 26: straight parallelepiped ribs over part of the height of the blade, in symmetry with respect to the neutral fiber;<tb> - <SEP> figure 27: concave blade symmetry with respect to the neutral fiber and with respect to a plane at mid-height of the blade;<tb> - <SEP> FIG. 28: straight parallelepiped ribs over part of the height of the blade, comprising a rounded hollow halfway up the blade, in symmetry with respect to the neutral fiber;<tb> - <SEP> FIG. 29: straight parallelepiped ribs over part of the height of the blade, comprising a rounded projection at mid-height of the blade, in symmetry with respect to the neutral fiber;<tb> - <SEP> FIG. 30: straight parallelepiped ribs over part of the height of the blade, on either side of an opening halfway up the blade, in symmetry with respect to the neutral fiber;<tb> - <SEP> figure 31: parallelepipedic straight ribs over part of the height of the blade in the form of a ramp according to the height;<tb> - <SEP> FIG. 32 is a block diagram representing a timepiece, in particular a watch, comprising a resonator according to the invention with at least one such flexible blade in relief against the anticlastic curvature.
    Detailed description of preferred embodiments
    The invention proposes to provide the flexible relief blade, and more particularly of ribs, in order to control the anticlastic curvature.
    Figures 1 to 3 show a conventional flexible blade subject to an anticlastic curvature.
    FIG. 4 defines the geometric reference elements used in the rest of the description, and shows a flexible blade 2 joining a first recess 41 of a first element 4 to a second recess 51 of a second element 5. The first recess 41 defines with the second recess 51 a blade direction D. The first element 4 and the second element 5 are each more rigid than each flexible blade 2. The flexible blade 2 is arranged to deform essentially in a plane XY parallel to the direction of blade D, and having a first dimension L called length along a first longitudinal axis Y parallel to the direction of blade D and defined by the first recess 41 and the second recess 51, a second dimension E called thickness according to a second X axis transverse to the first Y axis in the XY plane, and a third dimension H called height along a third Z axis orthogonal to the XY plane. The first dimension L is greater than the third dimension H, which is greater than the second dimension E.
    The blade 2 extends substantially in the form of a ribbon along a neutral FN geometric fiber joining the first recess 41 and the second recess 51, and comprises at least one middle zone 6, which extends transversely, according to the second axis X, around or on either side of the neutral fiber FN, and whose thickness is a nominal thickness EN. Depending on the case, as visible in the figures, the blade 2 can extend around the neutral fiber FN, which then always remains in the material, or else on either side of this neutral fiber FN. It is understood that this neutral fiber FN corresponds to a curve in the rest position of the blade 2, towards which this blade returns after an elastic deformation in bending,
    In a variant, as shown in particular in Figure 5, several ribs are distributed along the blade and extend along the height of the blade, in order to stiffen the blade to limit the anticlastic curvature, without much stiffen for the planned bending.
    Figure 7 shows the operation of a flexible guide resonator to a blade as a function of its amplitude for different numbers of sections, the number of ribs here being equal to the number of sections minus one. It can be seen that the addition of a few ribs is sufficient to considerably improve the isochronism of the resonator.
    Figure 8 shows the variation of walk (anisochronism) between 20 ° and 10 ° amplitude, depending on the number of sections of the resonator blade.
    Another variant consists in providing the flexible blade with undulations, in order to control the anticlastic curvature, as visible in FIGS. 9 and 10. The proposed wavy blade can, in projection in the XY plane, completely understand the fiber neutral FN, so as not to lose the tensile rigidity of the blade.
    Thus, the invention relates to a timepiece resonator 100 comprising, between a first element 4 and a second element 5 of which at least one of the two constitutes a movable inertial element within the resonator 100, at least one guide flexible 1 constituting an elastic return means of this inertial element within the resonator 100.
    This flexible guide 1 comprises at least one flexible blade 2 as defined above.
    More particularly, this at least one flexible blade 2 is symmetrical with respect to a median plane parallel to the XY plane, has a transverse extension which is variable along the second transverse axis X, in projection on the XY plane, relative to the neutral fiber FN, and comprises, along this second transverse axis X, at least one relief. This relief is protruding and distant from the neutral fiber FN by a distance greater than half of the smallest thickness of the at least one flexible blade 2 considered, or half or the nominal thickness EN, to limit the curvature anticlastic of this at least one flexible blade 2.
    More particularly, this at least one blade 2 comprises, at a distance from the first recess 41 and the second recess 51, at least one rib 3 extending substantially along the third axis Z. Each rib 3 comprises at least one generator 31 which is more distant from the neutral fiber FN than are the lateral surfaces of the median zones 6 of the blade 2 situated outside this or these ribs 3. And the longitudinal extension LN, along the first longitudinal Y axis, of each rib 3 of the blade 2 is less than or equal to one fifth of the length L of the blade 2 between its recesses.
    More particularly, each rib 3 is distant, along the first axis Y, from any neck that comprises the blade 2, by a value greater than or equal to the height H of the blade 2. The embodiments illustrated are blades without neck.
    More particularly, this at least one blade 2 comprises a plurality of median zones 6, which are sections extending along the neutral fiber FN and in the geometric extension of each other along the neutral fiber FN with the same nominal thickness EN. Each section 6 forms a ribbon whose lateral surfaces 60 are parallel to the third axis Z. And, in projection on the plane XY, at least two sections 6 are separated by a rib 3 of projecting thickness ES relative to a lateral surface 60 This protruding thickness ES is preferably greater than or equal to the nominal thickness EN along the second transverse axis X. More particularly, the protruding thickness ES is at least one and a half times greater than the nominal thickness EN.
    More particularly, this at least one blade 2 comprises, at a distance from the first recess 41 and the second recess 51, at least two ribs 3.
    In a particular variant, the blade 2 is straight, and has its neutral fiber FN right in the direction of blade D.
    More particularly, the sections 6 are short sections, the length of which in the first longitudinal direction Y is less than the height of the blade 2.
    More particularly, the number of sections is greater than or equal to the first whole number greater than or equal to the L / H quotient of the total length L of the blade 2 by its height H.
    In an alternative embodiment, the blade 2 has alternating sections 6 along the neutral fiber FN, and ribs 3.
    In another alternative embodiment, the middle zones 6 are limited to inflection zones between rounded or pointed ribs, or the like, forming a wavy or zig-zag strip.
    In a particular embodiment, this at least one flexible blade 2 has at least one rib 3 which extends over the entire height H of the blade 2 along the third axis Z. More particularly, each rib 3 of this blade 2 extends over the entire height H of the blade 2 along the third axis Z.
    More particularly, the height H of the blade 2 is less than or equal to one fifth of the length L of the blade 2 between its recesses.
    More particularly, the maximum thickness EM of the blade 2 along the second transverse axis X is less than or equal to one fifth of the height H of the blade 2.
    In an advantageous embodiment in terms of manufacturing, the blade 2 forms a straight prism extending along the third axis Z, that is to say a solid extruded in the direction Z from a base in the XY plane, and more particularly limited by two planes parallel to the XY plane and distant from the height H. More particularly the base of this prism in the XY plane is symmetrical with respect to the projection of the neutral fiber FN in this XY plane. In other words, the blade 2 can be easily produced by an extrusion type process, or by a "LIGA" or "DRIE" process, since its geometry can be fully described by its projection in the XY plane, raised in the third direction Z.
    In certain illustrated variants, the blade may have a central opening, in particular when it is made on the basis of two wafers head to tail, or include a draft, or have two draft in symmetry with respect to a median plane parallel to the plane XY.
    More particularly, the longitudinal extension LN of each rib 3 of the blade 2, along the first longitudinal Y axis, is less than or equal to the protruding thickness ES of the rib 3 along the second transverse X axis.
    In a particular embodiment, at least one rib 3 is a rectangular parallelepiped or is inscribed in a rectangular parallelepiped.
    More particularly, these rectangular parallelepipeds extend over the entire height of the blade, and their dimension along the second transverse axis X is greater than their dimension along the first longitudinal axis Y.
    In another variant, these ribs are prismatic diamond-based, over the entire height of the blade, in symmetry with respect to the neutral fiber through which passes a diagonal of the diamond.
    In a particular embodiment, at least one rib 3 is a cylinder.
    In a particular embodiment, at least one said rib 3 is a circular or elliptical section tube.
    In a particular embodiment, at least one rib 3 is symmetrical with respect to the neutral fiber FN.
    In a particular embodiment, at least one rib 3 is asymmetrical with respect to the neutral fiber FN.
    In a particular embodiment, the blade 2 comprises, at a distance from the first recess 41 and from the second recess 51, a plurality of ribs 3 projecting alternately on either side of the middle zones 6.
    In a particular embodiment, at least one rib 3 is hollow or open.
    In a particular embodiment, any projection of the blade 2 on the XY plane includes the neutral fiber FN.
    In a particular embodiment, the blade 2 comprises, at a distance from the first recess 41 and the second recess 51, a plurality of ribs 3 distributed regularly in the first longitudinal direction Y.
    According to the invention, the blade 2 comprises, at a distance from the first recess 41 and the second recess 51, a plurality of ribs 3, the number of which is greater than or equal to the difference between on the one hand the quotient L / H between length L and height H, and on the other hand a unit.
    In a particular embodiment, the projection of the blade 2 on the XY plane comprises, at all the surface junctions, rounded leaves with a minimum value of radius of 10 micrometers.
    In a particular embodiment, the blade 2 is made of micro-machinable material or silicon thermally compensated by a peripheral layer of silicon dioxide.
    More particularly, the blade 2 comprises, along its length L, at least two increases in its section inertia. In a particular embodiment, the blade has at least three increases in its section inertia. These increases in its section inertia are produced by these ribs 3 which extend in the third direction Z.
    In a variant of the “corrugated sheet” type, these increases in section inertia are produced by undulations which extend on either side of the neutral fiber.
    In a variant of the “inextensible sheet” type, the increases in section inertia are produced by such undulations which, seen in projection on the XY plane, include the neutral fiber.
    The flexible guide 1 itself is not detailed here. More particularly, it comprises at least two such flexible blades 2. More particularly, this flexible guide is a pivot with crossed blades, with at least two blades each extending parallel to the plane XY, distinct, and crossed in projection on this plane XY .
    More particularly, the blade 2 is produced by the "DRIE" or "LIGA" or similar process.
    The invention also relates to a timepiece 1000 comprising at least one such timepiece resonator 100. More particularly, this timepiece 1000 is a watch, in particular a mechanical watch.
    权利要求:
    Claims (21)
    [1]
    1. Clock resonator (100) comprising, between a first element (4) and a second element (5) of which at least one of the two constitutes an inertial element movable within said resonator (100), at least one guide flexible (1) constituting an elastic return means of said inertial element within said resonator (100) and comprising at least one flexible blade (2) joining a first recess (41) of said first element (4) to a second recess (51) of said second element (5), said first recess (41) defining with said second recess (51) a blade direction (D), said first element (4) and said second element (5) being each more rigid than each said at at least one flexible blade (2), said at least one flexible blade (2) being arranged to deform essentially in an XY plane parallel to said blade direction (D), and having a first dimension L called length along a first axis Y longitudinal parallel to said direction of blade (D), a second dimension E called thickness along a second transverse X axis orthogonal to said first Y axis in said XY plane, and a third dimension H called height along a third Z axis orthogonal to said XY plane, said first dimension L being greater to said third dimension H which is greater than said second dimension E, said at least one blade (2) extending substantially in the form of a ribbon around or on either side of a geometric neutral fiber (FN) joining said first embedding (41) and said second embedding (51), and comprising at least one middle zone (6) extending transversely, along said second axis X, on either side of said neutral fiber (FN) and whose thickness is a nominal thickness EN, where said at least one flexible blade (2) is symmetrical with respect to a median plane parallel to said plane XY, has a variable transverse extension with respect to said neutral fiber (FN), along said second axis transverse X, projected onto the XY plane, and comprises, along said second transverse axis X, at least one relief which is projecting and distant from said neutral fiber (FN) by a distance greater than half of the smallest thickness of said at least one flexible blade (2) or of said nominal thickness (EN), to limit the anticlastic curvature of said at least one flexible blade (2), and where said blade (2) comprises, at a distance from its embedding, at least a rib (3) extending substantially along an axis Z perpendicular to the plane XY, characterized in that said blade (2) comprises, at a distance from said first recess (41) and said second recess (51), a plurality of said ribs (3), the number of which is greater than or equal to the difference between on the one hand the quotient L / H between said length L and said height H, and on the other hand a unit.
    [2]
    2. timepiece resonator (100) according to claim 1, characterized in that each said rib (3) comprises at least one generator (31) which is further from said neutral fiber (FN) than are the lateral surfaces said median zones (6) of said blade (2) located outside said ribs (3), and characterized in that the longitudinal extension LN, along said first longitudinal Y axis, of each said rib (3) of said blade ( 2) is less than or equal to one fifth of said length L of said blade (2) between its recesses.
    [3]
    3. Clock resonator (100) according to claim 1 or 2, characterized in that each said rib (3) is distant, along said first axis Y, from any neck that comprises said blade (2), by a value greater than or equal to said height H of said blade (2).
    [4]
    4. Clock resonator (100) according to one of claims 1 to 3, characterized in that said at least one blade (2) comprises a plurality of said median zones (6) which are sections extending along of said neutral fiber (FN) and in the geometric extension of each other along said neutral fiber (FN) with the same said nominal thickness EN, each said section (6) forming a ribbon whose lateral surfaces (60) are parallel to said third axis Z, characterized in that, in projection on said XY plane, at least two said sections (6) are separated by a said rib (3) of protruding thickness ES with respect to said lateral surface (60) , said projecting thickness ES being greater than or equal to said nominal thickness EN along said second transverse axis X.
    [5]
    5. Clock resonator (100) according to claim 4, characterized in that said projecting thickness ES is at least one and a half times greater than said nominal thickness EN.
    [6]
    6. Clock resonator (100) according to one of claims 1 to 5, characterized in that said blade (2) comprises, at a distance from said first recess (41) and said second recess (51), at least two ribs (3).
    [7]
    7. Clock resonator (100) according to one of claims 1 to 6, characterized in that said blade (2) is straight and has its said neutral fiber (FN) straight in said blade direction (D).
    [8]
    8. Clock resonator (100) according to one of claims 1 to 7, characterized in that said at least one flexible blade (2) comprises at least one said rib (3) which extends over said entire height H of said blade (2) along said third axis Z.
    [9]
    9. Clock resonator (100) according to one of claims 1 to 8, characterized in that said height H of said blade (2) is less than or equal to one fifth of said length L of said blade (2) between its recesses.
    [10]
    10. Clock resonator (100) according to one of claims 1 to 9, characterized in that the maximum thickness EM of said blade (2) along said second transverse axis X is less than or equal to one fifth of said height H of said blade (2).
    [11]
    11. Clock resonator (100) according to one of claims 1 to 10, characterized in that said blade (2) forms a straight prism extending along said third axis Z.
    [12]
    12. Clock resonator (100) according to claim 11, characterized in that the base of said prism in said XY plane is symmetrical with respect to the projection of said neutral fiber in said XY plane.
    [13]
    13. Clock resonator (100) according to one of claims 1 to 12, characterized in that the longitudinal extension LN of each said rib (3) of said blade (2), along said first longitudinal Y axis, is less than or equal to the protruding thickness ES of said rib (3) along said second transverse axis X.
    [14]
    14. Clock resonator (100) according to one of claims 1 to 13, characterized in that at least one said rib (3) is a rectangular parallelepiped or is inscribed in a rectangular parallelepiped.
    [15]
    15. Clock resonator (100) according to one of claims 1 to 14, characterized in that at least one said rib (3) is symmetrical with respect to said neutral fiber (FN).
    [16]
    16. Clock resonator (100) according to one of claims 1 to 15, characterized in that said blade (2) comprises, at a distance from said first recess (41) and said second recess (51), a plurality of said ribs (3) projecting alternately on either side of said median zones (6)
    [17]
    17. Clock resonator (100) according to one of claims 1 to 16, characterized in that any projection of said blade (2) on said XY plane includes said neutral fiber FN.
    [18]
    18. Clock resonator (100) according to one of claims 1 to 17, characterized in that said blade (2) comprises, at a distance from said first recess (41) and said second recess (51), a plurality of said ribs (3) distributed regularly in said first longitudinal direction Y.
    [19]
    19. Clock resonator (100) according to one of claims 1 to 18, characterized in that the projection of said blade (2) on said XY plane comprises, at all surface junctions, rounded leaves with a minimum radius value of 10 micrometers.
    [20]
    20. Clock resonator (100) according to one of claims 1 to 19, characterized in that said blade (2) is made of micro-machinable material or silicon thermally compensated by a peripheral layer of silicon dioxide.
    [21]
    21. Timepiece (1000) comprising at least one timepiece resonator (100) according to one of claims 1 to 20.
    类似技术:
    公开号 | 公开日 | 专利标题
    EP3035126B1|2017-12-13|Timepiece resonator with crossed blades
    EP3206089B1|2018-12-19|Timepiece resonator mechanism
    EP3054358B1|2019-08-28|Clock oscillator mechanism
    EP2911012A1|2015-08-26|Timepiece oscillator
    WO2013045706A2|2013-04-04|Integral assembly of a hairspring and a collet
    EP3254158A1|2017-12-13|Isochronous timepiece resonator
    EP3548973B1|2021-01-27|Device for timepiece, clockwork mechanism and timepiece comprising such a device.
    CH712068B1|2019-11-29|Clockwork resonator mechanism with virtual pivot.
    EP2887151A2|2015-06-24|Oscillating element for a clockwork
    EP2690506B1|2015-01-14|Anti-tripping clock hairspring
    EP3430479B1|2021-05-19|Device for a timepiece, timepiece movement and timepiece comprising a device of said type
    EP2908183B1|2018-04-18|Clock hairspring
    EP3561609A1|2019-10-30|Shock protection of a resonator mechanism with rotatable flexible guiding
    EP3206091B1|2019-01-23|Isochronous clock resonator
    CH715641A2|2020-06-15|Clock resonator comprising at least one flexible guide.
    EP3336613B1|2020-03-11|Timepiece resonator with two balances arranged to oscillate in a single plane
    EP3667432A1|2020-06-17|Timepiece resonator comprising at least one flexible guide
    EP3555708A1|2019-10-23|Timepiece component with flexible pivot
    EP3273309A1|2018-01-24|Timepiece with hybrid oscillator
    CH712958A2|2018-03-29|Oscillating element and mechanical clock oscillator comprising such an oscillating element.
    EP3561607B1|2022-03-16|Collision protection of a resonator mechanism with rotatable flexible guiding
    EP3451073B1|2021-08-04|Timepiece oscillator having flexible guides with wide angular travel
    EP3435173A1|2019-01-30|Mechanical movement with isochronous rotary resonator, which is not position-sensitive
    EP3637196B1|2021-05-19|Mechanical oscillator
    EP3771947A1|2021-02-03|Device for guiding pivoting and clockpiece resonator mechanism for a pivoting mass
    同族专利:
    公开号 | 公开日
    CH715630A2|2020-06-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CH01539/18A|CH715630A2|2018-12-13|2018-12-13|Clock resonator comprising at least one flexible guide.|
    [返回顶部]