EP2410386B1 - Balancier à réglage d'inertie avec insert - Google Patents

Balancier à réglage d'inertie avec insert Download PDF

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Publication number
EP2410386B1
EP2410386B1 EP10170005.2A EP10170005A EP2410386B1 EP 2410386 B1 EP2410386 B1 EP 2410386B1 EP 10170005 A EP10170005 A EP 10170005A EP 2410386 B1 EP2410386 B1 EP 2410386B1
Authority
EP
European Patent Office
Prior art keywords
insert
balance
holding means
elastic holding
recess
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP10170005.2A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2410386A1 (fr
Inventor
Daniel Mallet
Frédéric Tolle
Philippe Barthoulot
Daniel Vicente
Emmanuel Graf
Philomène Berger
Pierre Cusin
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 to EP10170005.2A priority Critical patent/EP2410386B1/fr
Application filed by Nivarox Far SA, Nivarox SA filed Critical Nivarox Far SA
Priority to CN201180035313.5A priority patent/CN103097966B/zh
Priority to EP11731310.6A priority patent/EP2596407B1/fr
Priority to CH00206/13A priority patent/CH705541B1/fr
Priority to PCT/EP2011/061294 priority patent/WO2012010410A1/fr
Priority to JP2013520044A priority patent/JP5551313B2/ja
Priority to US13/809,032 priority patent/US8944675B2/en
Priority to KR1020137001461A priority patent/KR101457312B1/ko
Publication of EP2410386A1 publication Critical patent/EP2410386A1/fr
Priority to HK13112421.9A priority patent/HK1185154A1/xx
Application granted granted Critical
Publication of EP2410386B1 publication Critical patent/EP2410386B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B18/00—Mechanisms for setting 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
    • 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
    • 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
    • G04B17/22—Compensation of mechanisms for stabilising frequency for the effect of variations of temperature
    • G04B17/222—Compensation of mechanisms for stabilising frequency for the effect of variations of temperature with balances
    • 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
    • G04B18/00—Mechanisms for setting frequency
    • G04B18/006—Mechanisms for setting frequency by adjusting the devices fixed on the balance
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining

Definitions

  • the invention relates to a balance equipped for a timepiece, with inertia adjustment to adjust its inertia and / or its balance or / and its frequency of oscillation, comprising on the one hand a balance having itself a hub arranged for cooperating with a shaft pivoting about a balance axis perpendicular to a balance plane, and a continuous or discontinuous peripheral serge connected to said hub by at least one joining surface, said equipped balance wheel comprising, on the other hand, at least one an insert, said balance comprising, at the periphery of said serge, at least one housing for receiving said at least one insert, said insert comprising additional profile guiding means complementary to guide means that comprises said housing, said balance comprising elastic holding means arranged to allow, in a first insertion position where said elastic holding means are under constraint e, insertion of said insert into said housing, and to prohibit, in a second holding position where said elastic holding means are released, the extraction of said insert out of said housing, said insert being insertable in said housing by constraint of said
  • the invention further relates to a sprung balance incorporating such a balance.
  • the invention also relates to a timepiece incorporating such a sprung balance or such a balance equipped.
  • the invention relates to the field of regulating organs for timepieces, and particularly the balance or the balance spring.
  • the accuracy of the calibres depends on the quality of their regulating organ, and the obtaining of very high oscillation frequencies, for example of 10 Hz, to be compared to the usual frequencies of 2.5 to 4 Hz, can only be obtained with the design of suitable regulating members, particularly with regard to the pendulum.
  • the energy to be provided, in the form of elastic torque of the spiral, for the maintenance of the oscillation is proportional to the product, on the one hand of the inertia of the balance around its axis of rotation, by the square frequency on the other hand.
  • the passage of a frequency from 4 Hz to 10 Hz results in about the division by 6 of the inertia.
  • a pendulum inertia of 12 mg.cm 2 is considered good, such a balance typically having a diameter of 9 to 10 mm.
  • a balance for use at 10 Hz must have a low value inertia, especially less than 2 mg.cm 2 .
  • a rocker for use at 10 Hz must still, for optimal operation, be of minimum mass, especially less than 30 mg, so as to reduce friction in the bearings, so as to avoid disturbances of isochronism in the different positions of use.
  • micro-machinable materials such as silicon, quartz, which are in principle made in finite dimensions, with very precise tolerances, as part of their production process, are not easily machinable a posteriori.
  • the document CH 343 904 A in the name of ROLEX WATCHES describes a balance serge comprising means of elastic retention, in the form of a slot, immobilizing an insert constituted by a feeder pin.
  • the document WO 2008/080570 A2 in the name of COMPLITIME SA describes weights equipped with slots allowing a friction fixing.
  • the document EP 1 351 103 A1 in the name of CHOPARD MANUFACTURE SA describes U-shaped elastic weights introduced in housings of the serge by elastic deformation.
  • the document CH 345 600 A in the name of ROLEX WATCHES describes a split sleeve for the maintenance and the elastic tightening of a weight.
  • the document CH 261 431 A in the name of PATEK PHILIPPE presents adjustment masses centered on tenons and immobilized by their own elasticity.
  • the document CH 89 273 A in the name of Paul DITISHEIM discloses non-prominent filling masses maintained by their own elasticity on the walls of a threaded cavity or not.
  • the document CH 280 067 A in the name of PATEK PHILIPPE represents adjusting masses mounted elastically on tenon, with a center of gravity eccentric with respect thereto.
  • the document EP 2 395 402 A1 in the name of MONTRES BREGUET SA describes a balance for timepiece, with inertia adjustment to adjust its oscillation frequency, comprising a hub arranged to cooperate with a balance shaft perpendicular to a balance plane, and a peripheral serge continuous or discontinuous, connected to the hub by at least one junction surface, this balance comprising at least one flyweight, which flyweight is reported in a housing of the periphery of the serge.
  • At least one feeder comprises profile guiding means complementary to complementary guiding means that includes the housing.
  • Each weight comprises at least two parts adjustable in translation relative to each other in a plane parallel to the plane of the beam, and one of which is immobile in translation relative to the serge.
  • Each of the parts of the weight is made of a material that is denser than a first material constituting the serge.
  • the inventive step consisted in creating the conditions of a balance structure, including the hub, the serge, and the connections between these two components, as light as possible, moving as far as possible from the hub of the masses of density if possible higher than that of this structure, and to incorporate in this structure adjustment means for making adjustments and adjustments by avoiding rework machining.
  • the invention relates to a rocker arm equipped with a timepiece, with inertia adjustment for adjusting its inertia and / or its balancing and / or oscillation frequency, according to claim 1.
  • the invention also comprises a sprung balance incorporating at least one such equipped balance.
  • the invention also relates to a timepiece incorporating at least one such sprung balance or at least one such equipped balance.
  • the preferred use of silicon makes it possible to obtain a beam structure that is both very light and very rigid, which can be dimpled in the junction zone between the hub and the serge.
  • the postponement periphery of inserts which can be equipped with screws, is favorable to obtaining a properly sized inertia despite the very low total mass of the balance.
  • the adjustment and balancing functions are ensured and facilitated.
  • Such a balance is perfectly suitable for good operation at the frequency of 10 Hz, and at frequencies above 10 Hz.
  • the invention relates to the field of regulating organs for timepieces, and particularly the balance or the balance spring.
  • the invention is particularly directed to the production of pendulums for high oscillation frequencies, 10 Hz or more.
  • the invention relates to the production of a balance equipped 100 for timepiece with inertia adjustment to adjust its inertia and / or its balance or / and its frequency of oscillation.
  • This equipped balance 100 includes a rocker 1 itself having a hub 2 arranged to cooperate with a shaft pivoting about a balance axis 3 perpendicular to a balance plane 4, and a peripheral serge 5 continuous or discontinuous.
  • This serge 5 can indeed be discontinuous in the context of a search for relief.
  • a serge 5 continues, as visible on the figure 5 , offers the advantage of good rigidity and good aerodynamics, and limits localized flexion by preventing any warping of the balance 1.
  • This serge 5 is connected to the hub 2 by at least one junction surface 6, which may be constituted by a continuous surface such as a perforated disc or not, or by one or more arms 20.
  • the preparation of a junction surface 6 openwork in particular with cutouts, crossing or not, between longitudinal members ensuring a good triangulation, makes it possible to further reduce the weight of the balance.
  • the serge 5 is made in one piece with the junction surface 6 and the hub 2 in a micro-machinable material, or silicon, or quartz, or one of their compounds, or an alloy derived from MEMS technology, or an alloy as obtained by the "LIGA” process including but not limited to nickel base alloy or aluminum obtained by the "LIGA” process.
  • a micro-machinable material or silicon, or quartz, or one of their compounds, or an alloy derived from MEMS technology, or an alloy as obtained by the "LIGA” process including but not limited to nickel base alloy or aluminum obtained by the "LIGA” process.
  • the choice of silicon gives particularly good results and is the preferred solution.
  • This equipped balance 100 also comprises at least one housing 8, located at the periphery of the serge 5 for receiving an insert 7.
  • This equipped balance wheel 100 also comprises at least one insert 7.
  • Such an insert 7 is attached to or in the serge 5 at such a housing 8.
  • This housing 8 comprises guide means 9.
  • This insert 7 comprises complementary guide means 9A, of complementary profile to these guide means 9.
  • this insert 7, or each of the parts which constitutes it, is made of a material which is denser than a first constituent material of the serge 5.
  • These elastic holding means 10 are thus arranged to allow the introduction of this insert 7 in its housing 8 and to prohibit its extraction, as visible in the figures. They are preferably constituted by means of clipping and complementary clipping means, which, preferably, the assembly is irreversible.
  • the guiding means 9 and the complementary guiding means 9A are determined so as to allow mobility in the second holding position by translation or / and by pivoting of the insert 7 in the housing 8.
  • Mobility with a degree of freedom in translation is illustrated by the figures 1 and 11 .
  • the guide means 9 and the complementary guide means 9A are substantially cylindrical, or are cylindrical.
  • the elastic holding means 10 are located on the balance 1.
  • At least one of the housings 8, which includes the rocker 1 comprises elastic holding means 10 for holding such an insert 7 in the housing 8 after insertion into the latter.
  • these housings 8, and more preferably all of them comprise such elastic holding means 10, which can be arranged in different variants which will be described below.
  • the properties of the silicon, when the balance 1 is made in this material, are particularly suitable for the execution of such elastic holding means 10 incorporated in the body of the balance 1.
  • the elastic holding means 10 are located on the insert 7.
  • the elastic holding means 10 are then made at the level of the inserts 7, the equipped balance 100 then comprises a rocker 1, which is different from that of the first mode, in that it comprises, at the periphery of the serge 5 at least one housing 8 for receiving at least one insert 7, and that the housing 8 does not necessarily comprise elastic holding means.
  • the insert 7 which comprises elastic holding means 10 for its retention in the housing 8 after insertion into the latter, as visible on the figure 4 or the figure 7 , where the insert 7 has a slot 16 which provides sufficient flexibility.
  • This insert 7 thus constitutes an unbalanced split weight, because of the slot 16, and this configuration makes it possible to accommodate one part with the other, without forcing beyond the breaking limits of the balance 1, especially when this one is made of silicon or the like.
  • This slot 16 is, again, advantageously used to receive the end of a tool for adjusting its pivoting relative to its pivot axis 17 in the housing 8.
  • the elastic holding means 10 are made both at the rocker 1 on the one hand, and the inserts 7 on the other hand.
  • the insert 7 then comprises such elastic holding means 10
  • the housing 8 also comprises elastic holding means 10 for holding the insert 7 in the housing 8 after insertion into the latter.
  • the housings 8, the inserts 7, and the elastic holding means 10 can take different configurations, some preferred and in no way limiting configurations are described below.
  • the elastic holding means 10 are produced in the serge 5 of the balance 1.
  • the elastic holding means 10 are determined to maintain the insert 7 in the housing 8 in a radial direction relative to the balance shaft 3.
  • the insert 7 is maintained in this radial direction by constituting a bearing surface 11 tending to push the insert 7 against at least one fixed or resilient abutment 12 of which the housing 8 is fitted.
  • the elastic holding means 10 are determined to maintain the insert 7 in the housing 8 both in a radial direction relative to the balance shaft 3 and in a tangential direction relative to to the serge 5.
  • the insert 7 is slid radially by the outer diameter of the serge 5, for its insertion into the rocker 1, and it is held in place in the housing 8 by the elastic holding means 10 for radial and tangential holding.
  • the elastic holding means 10 are cut out into first resilient holding means 13 and second elastic holding means 14.
  • These elastic holding means 10 are in the form of a double spring system and of clips, constituted here by a first elastic lip 13, which has a bearing surface 11 arranged to serve as a lower stop for the insert 7, and by a second elastic lip 14, the latter comprising a stop 12 arranged to serve
  • the first resilient holding means 13 and the second elastic holding means 14 advantageously consist of elastic lips, preferably movable in non-parallel directions to one another, and in particular orthogonal directions. one to another.
  • the insert 7 advantageously comprises at least one tapping, not shown in the figure, for receiving a regulating screw for adjusting and balancing the balance, this adjusting screw being movable radially in this tapping with respect to the axis 3 of the balance.
  • the housing 8 and the insert 7 are preferably determined so as to ensure insertion of the insert 7 into the housing 8 in a direction parallel to the balance shaft 3.
  • the second embodiment variant of the figure 2 presents this provision.
  • the insert 7 is slid or driven axially, by the upper face or the lower face of the serge 5, in a cylindrical housing 8, which is formed in part by an elastic lip 13 also constituting the elastic holding means 10, forming spring and now the insert 7 in place.
  • This insert 7 has an unbalance relative to its pivot axis 17.
  • This unbalance can for example from a notch 15 made in the insert and remaining empty, allowing the passage of a tool to perform an angular adjustment pivoting. But it can also come from the mounting of a reported component, of higher density than that of the insert 7, in such an indentation 15 or in a suitable housing.
  • the elastic holding means 10 are determined to maintain the insert 7 in the housing 8 in an angular position of pivoting with respect to a pivot axis 17 of this insert 7 in the housing 8. preferably this pivot axis 17 of the insert is parallel to the balance shaft 3, this is the case of the variants of the Figures 2 to 6 .
  • the elastic holding means 10 are arranged to control, under the effect of a force tending to move them away from the second holding position, a pivoting of the insert 7 in the housing 8 with respect to such a pivot axis 17.
  • This insert 7 is preferably of the unbalance type, similar to that of the second variant of the figure 2 , but it has complementary guide means 9A made in the form of a toothing 18, which cooperates with the guide means 9, in particular constituted by a cylindrical bore, of the housing 8.
  • the first holding means elastic member 13, respectively the second elastic holding means 14, with which they constitute the elastic holding means 10, advantageously act as a retaining pawl when the second elastic holding means 14, respectively the first elastic holding means 13, cause the elastic retaining means 10, insert 7 in pivoting.
  • the first elastic holding means 13 and the second elastic holding means 14 are advantageously constituted by elastic lips, whose directions are intersecting to one another, and whose ends 13A, 14A, cooperate with the teeth 18 that the insert 7 carries at its periphery.
  • This third variant makes it possible to carry out adjustment by means of a double ratchet adjustment in both pivoting directions about the pivot axis 17 of the insert 7.
  • Such an embodiment of the insert 7 with a peripheral toothing 18 is naturally usable in the other variants, because it facilitates the maintenance in a particular angular position.
  • the insert 7 is made sandwiched between at least two flanges 7A and 7B, which are arranged to bear on either side of the serge 5, and to be assembled to one another by means of permanent assembly, for example driven, clipped, glued or the like, in the manner of a rivet, or a bolt, or the like, so that the subassembly produced by the assembly of these two flanges 7A and 7B have at most one degree of freedom in pivoting or in translation relative to the serge 5.
  • This embodiment prevents the insert 7 from dissociating from the serge 5 of the balance 1. It is still possible to perform the insert 7 in at least two complementary parts in the manner of these flanges 7A and 7B.
  • the insert 7 so as to have, after insertion into the rocker 1, at least one visible surface, which is made of a material capable of being micro-machined or to undergo a removal of material by a laser.
  • the insert 7 it must be possible to achieve balancing by adjusting the unbalance on the one hand, and correct the inertia on the other hand, and especially adjust very precisely the frequency of the oscillator.
  • Balance balancing is an important operation, for which we seek a high balancing accuracy, of the order of one microgram x cm.
  • the joining surface 6 consists of at least one arm 20. Thanks to the use of a silicon technology, such an arm can adopt any profile, including a curve, or other. It may also include lightenings, through or not, for example in the form of triangular pockets, which provide rigidity while allowing a significant weight loss.
  • the figure 5 represents an even number version of arms diametrically opposed two by two.
  • the figure 7 shows an exemplary embodiment with an arm 20 having a perforated structure, in a mixed manner, separated by ribs 30, pockets 29 through the entire thickness of the junction surface 6, in particular the arm 20, and / or blind pockets 31, not through, on only part of the thickness of the junction surface 6, in particular the arm 20, for example a third, each separated from another similar blind pocket located on the other side of the arm 20 by a canvas of comparable thickness.
  • the good triangulation carried out allows a sensible economy of mass, a conventional finite element calculation makes it possible to determine the longitudinal members 30 which are essential for the mechanical strength and the resistance to twisting.
  • the annular portion of the serge 5 can also be perforated similarly. It is the same if it is preferred a continuous junction surface 6 such as a disk or the like.
  • the serge 5 may comprise one or more cutouts 23, peripheral, or on the inner part of the serge 5.
  • the first radial configuration, with insertion and radial adjustment of the insert 7 relative to the balance shaft 3, is further illustrated by a sixth variant, shown in FIGS. Figures 9 to 11 , where the insert 7 is constituted by a regulating screw 23 visible on the figure 11 .
  • This adjusting screw 23 cooperates with sections of threaded tracks 21 and 21 A, located opposite each other, substantially at the median plane 4A of the balance 1.
  • These sections of tapped tracks 21 and 21A are obtained, in a balance 1 preferably made of silicon, by the creation of a draft, of a shape approaching that of a substantially circular profile groove, when performing two straight teeth 22 and 22A facing each other.
  • the "DRIE" method makes it possible to obtain either sloped bodies or remains in this form, which is preferred here, because it allows, combined with the making of elastic holding means in the form of less a resilient lip 13, to hold by pinching the adjusting screw 23, the threading 25 cooperates, in a conventional manner, with the teeth of progressive profile 28, respectively 28A, from the making of the circular draft, in one direction in advance perpendicular to the plane 4A, which reproduce the elements of right toothing 21, respectively 21A. In sum, these toothing elements 28 and 28A correctly reproduce a truncated tapping.
  • the choice of a regulating screw 23 in gold or the like, provided with an adjusting slot 24 or the like, allows precise adjustment.
  • the tightening of this adjusting screw 23 in its housing 8 is achieved by the adapted dimensioning of the elastic lip 13, or of the lips if there are several, for example on either side of the housing 8.
  • a surface coating constituting a deformable layer for plastic deformation, low elastic modulus, lower than that of the base material, including silicon or its compounds.
  • the Young's modulus of this surface coating is chosen to be less than 8 GPa, and preferably less than 4 GPa.
  • This deformable layer may especially consist of a polymeric layer deposited in the gas phase.
  • This surface coating must be chosen for its good affinity with the base material, in particular silicon and silicon compounds, and can be used to directly form a housing 8 for an insert 7 or for a control screw 23.
  • the invention also relates to a sprung balance incorporating at least one such equipped balance 100, according to any one of the embodiments and any of the variants presented above.
  • the invention also relates to a timepiece incorporating at least one such sprung balance, or at least one such equipped balance 100.
  • the use of silicon allows dimensioning in diameter substantially greater than one would, at similar inertia, with a balance of bill Traditional.
  • the good elasticity of the silicon is particularly advantageous for the realization of the elastic holding means 10 of the invention.
  • each part of each insert 7, or / and each control screw 23, is made of a material, which is a heavy metal, or beryllium bronze, or gold or platinum or tantalum or molybdenum, or one of their oxides or their nitrides, or one of their alloys, or one of the complexes developed on their bases.
  • the design of the balance allows a very precise adjustment of the oscillation frequency of the sprung balance in which it is integrated.
  • the adjustment and adjustment of the balance are very precise, and allow the balance to be used in a high frequency oscillator, 10 Hz or more.
  • the elastic holding means 10 are determined to maintain the insert 7 in the housing 8 in an angular position of pivoting with respect to a pivot axis 17 of this insert 7 in the housing 8. preferably this pivot axis 17 of the insert is parallel to the balance shaft 3, this is the case of the variants of the Figures 2 to 6 .
  • the elastic holding means 10 are arranged to control, under the effect of a force tending to move them away from the second holding position, a pivoting of the insert 7 in the housing 8 with respect to such a pivot axis 17.
  • This insert 7 is preferably of the unbalance type, similar to that of the second variant of the figure 2 , but it has complementary guide means 9A made in the form of a toothing 18, which cooperates with the guide means 9, in particular constituted by a cylindrical bore, of the housing 8.
  • the first holding means elastic member 13, respectively the second elastic holding means 14, with which they constitute the elastic holding means 10, advantageously act as a retaining pawl when the second elastic holding means 14, respectively the first elastic holding means 13, cause the elastic retaining means 10, insert 7 in pivoting.
  • the first elastic holding means 13 and the second elastic holding means 14 are advantageously constituted by elastic lips, whose directions are intersecting to one another, and whose ends 13A, 14A, cooperate with the teeth 18 that the insert 7 carries at its periphery.
  • This third variant makes it possible to carry out adjustment by means of a double ratchet adjustment in both pivoting directions about the pivot axis 17 of the insert 7.
  • Such an embodiment of the insert 7 with a peripheral toothing 18 is naturally usable in the other variants, because it facilitates the maintenance in a particular angular position.
  • the insert 7 is sandwiched between at least two flanges 7A and 7B, which are arranged to bear on either side of the serge 5, and to be assembled to one another by means of permanent assembly, for example driven, clipped, glued or the like, in the manner of a rivet, or a bolt, or the like, so that the subassembly made by the assembly of these two flanges 7A and 7B has at most one degree of freedom in pivoting or in translation relative to the serge 5.
  • This embodiment prevents the insert 7 from disengaging the serge 5 of the balance 1. It is still possible to make the insert 7 in at least two complementary parts in the manner of these flanges 7A and 7B.
  • the insert 7 so as to have, after insertion into the rocker 1, at least one visible surface, which is made of a material capable of being micro-machined or to undergo a removal of material by a laser.
  • the insert 7 it must be possible to achieve balancing by adjusting the unbalance on the one hand, and correct the inertia on the other hand, and especially adjust very precisely the frequency of the oscillator.
  • Balance balancing is an important operation, for which we seek a high balancing accuracy, of the order of one microgram x cm.
  • the joining surface 6 consists of at least one arm 20. Thanks to the use of a silicon technology, such an arm can adopt any profile, including a curve, or other. It may also include lightenings, through or not, for example in the form of triangular pockets, which provide rigidity while allowing a significant weight loss.
  • the figure 5 represents an even number version of arms diametrically opposed two by two.
  • the figure 7 shows an exemplary embodiment with an arm 20 having a perforated structure, in a mixed manner, separated by ribs 30, pockets 29 through the entire thickness of the junction surface 6, in particular the arm 20, and / or blind pockets 31, not through, on only part of the thickness of the junction surface 6, in particular the arm 20, for example a third, each separate another similar blind pocket located on the other side of the arm 20 by a canvas of comparable thickness.
  • the good triangulation carried out allows a sensible economy of mass, a conventional finite element calculation makes it possible to determine the longitudinal members 30 which are essential for the mechanical strength and the resistance to twisting.
  • the annular portion of the serge 5 can also be perforated similarly. It is the same if it is preferred a continuous junction surface 6 such as a disk or the like.
  • the serge 5 may comprise one or more cutouts 23, peripheral, or on the inner part of the serge 5.
  • the first radial configuration of the invention, with insertion and radial adjustment of the insert 7 relative to the balance shaft 3, is further illustrated by a sixth variant, shown in FIGS. Figures 9 to 11 , where the insert 7 is constituted by a regulating screw 23 visible on the figure 11 .
  • This adjusting screw 23 cooperates with sections of threaded tracks 21 and 21 A, located opposite each other, substantially at the median plane 4A of the balance 1.
  • These sections of tapped tracks 21 and 21A are obtained, in a balance 1 preferably made of silicon, by the creation of a draft, of shape approaching that of a substantially circular profile groove, during the execution of two straight teeth 22 and 22A facing each other.
  • the "DRIE" method makes it possible to obtain either sloped bodies or remains in this form, which is preferred here, because it allows, combined with the making of elastic holding means in the form of less a resilient lip 13, to hold by pinching the adjusting screw 23, the threading 25 cooperates, in a conventional manner, with the teeth of progressive profile 28, respectively 28A, from the making of the circular draft, in one direction in advance perpendicular to the plane 4A, which reproduce the elements of right toothing 21, respectively 21A. In sum, these toothing elements 28 and 28A reproduce correctly a tapping truncated.
  • the choice of a regulating screw 23 in gold or the like, provided with an adjusting slot 24 or the like allows precise adjustment.
  • the tightening of this adjusting screw 23 in its housing 8 is achieved by the adapted dimensioning of the elastic lip 13, or of the lips if there are several, for example on either side of the housing 8.
  • a surface coating constituting a deformable layer for plastic deformation, low elastic modulus, lower than that of the base material, including silicon or its compounds.
  • the Young's modulus of this surface coating is chosen to be less than 8 GPa, and preferably less than 4 GPa.
  • This deformable layer may especially consist of a polymeric layer deposited in the gas phase.
  • This surface coating must be chosen for its good affinity with the base material, in particular silicon and silicon compounds, and can be used to directly form a housing 8 for an insert 7 or for a control screw 23.
  • the invention also relates to a sprung balance incorporating at least one such rocker 1, or at least one such equipped balance 100, according to any one of the embodiments and any of the variants presented above.
  • the invention also relates to a timepiece incorporating at least one such sprung balance, or at least one such balance 1 or at least one such equipped balance 100.
  • the use of silicon allows dimensioning in diameter substantially greater than one would, at similar inertia, with a balance of traditional invoice.
  • the good elasticity of the silicon is particularly advantageous for the realization of the elastic holding means 10 of the invention.
  • each part of each insert 7, or / and each control screw 23, is made of a material, which is a heavy metal, or beryllium bronze, or gold or platinum or tantalum or molybdenum, or one of their oxides or their nitrides, or one of their alloys, or one of the complexes developed on their bases.
  • the design of the balance allows a very precise adjustment of the oscillation frequency of the sprung balance in which it is integrated. Adjustment and adjustment of the balance are very precise, and allow the pendulum to be used in a high frequency oscillator, 10 Hz or more.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Micromachines (AREA)
EP10170005.2A 2010-07-19 2010-07-19 Balancier à réglage d'inertie avec insert Active EP2410386B1 (fr)

Priority Applications (9)

Application Number Priority Date Filing Date Title
EP10170005.2A EP2410386B1 (fr) 2010-07-19 2010-07-19 Balancier à réglage d'inertie avec insert
EP11731310.6A EP2596407B1 (fr) 2010-07-19 2011-07-05 Balancier a reglage d'inertie avec insert
CH00206/13A CH705541B1 (fr) 2010-07-19 2011-07-05 Balancier à réglage d'inertie avec insert.
PCT/EP2011/061294 WO2012010410A1 (fr) 2010-07-19 2011-07-05 Balancier a reglage d'inertie avec insert
CN201180035313.5A CN103097966B (zh) 2010-07-19 2011-07-05 使用插件的具有惯量调节的摆轮
JP2013520044A JP5551313B2 (ja) 2010-07-19 2011-07-05 インサートを用いた慣性調整機能を有するテンプ
US13/809,032 US8944675B2 (en) 2010-07-19 2011-07-05 Balance with inertia adjustment using an insert
KR1020137001461A KR101457312B1 (ko) 2010-07-19 2011-07-05 인서트를 사용한 관성 조절 기능을 가지는 밸런스
HK13112421.9A HK1185154A1 (en) 2010-07-19 2013-11-05 Balance having inertia adjustment using an insert

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10170005.2A EP2410386B1 (fr) 2010-07-19 2010-07-19 Balancier à réglage d'inertie avec insert

Publications (2)

Publication Number Publication Date
EP2410386A1 EP2410386A1 (fr) 2012-01-25
EP2410386B1 true EP2410386B1 (fr) 2018-10-03

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EP10170005.2A Active EP2410386B1 (fr) 2010-07-19 2010-07-19 Balancier à réglage d'inertie avec insert
EP11731310.6A Active EP2596407B1 (fr) 2010-07-19 2011-07-05 Balancier a reglage d'inertie avec insert

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EP (2) EP2410386B1 (xx)
JP (1) JP5551313B2 (xx)
KR (1) KR101457312B1 (xx)
CN (1) CN103097966B (xx)
CH (1) CH705541B1 (xx)
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EP2551732B1 (fr) * 2011-07-29 2020-05-06 Rolex S.A. Balancier à pivotement optimisé
WO2013092173A1 (fr) * 2011-12-22 2013-06-27 The Swatch Group Research And Development Ltd Procédé d'amélioration du pivotement d'un mobile
EP2746871B1 (fr) * 2012-12-21 2021-05-05 Montres Tudor S.A. Vis de réglage d'inertie de balancier et balancier comprenant une telle vis
JP6070937B2 (ja) * 2013-02-20 2017-02-01 セイコーインスツル株式会社 てんぷ、時計用ムーブメント及び機械式時計
CH707813A2 (fr) 2013-03-19 2014-09-30 Nivarox Sa Structure de mécanisme d'horlogerie pour mobile pivotant.
EP2908188B1 (fr) * 2014-02-17 2018-06-27 The Swatch Group Research and Development Ltd. Régulation d'un résonateur d'horlogerie par action sur la rigidité d'un moyen de rappel élastique
EP2952977A1 (fr) * 2014-06-03 2015-12-09 Nivarox-FAR S.A. Composant horloger en matériaux soudés
EP2980658B1 (fr) * 2014-08-01 2017-07-19 Agenhor SA Dispositif d'assemblage et de réglage d'un spiral
EP2990882B1 (fr) * 2014-08-26 2020-01-15 Nivarox-FAR S.A. Balancier à réglage d'inertie
EP2990883A1 (fr) * 2014-08-29 2016-03-02 Nivarox-FAR S.A. Ensemble balancier-spiral d'horlogerie
EP3021174A1 (en) * 2014-11-17 2016-05-18 LVMH Swiss Manufactures SA Monolithic timepiece regulator, timepiece movement and timepiece having such a timepiece regulator
EP3118693B1 (fr) * 2015-07-16 2018-05-09 The Swatch Group Research and Development Ltd. Mécanisme de réglage de marche d'un oscillateur d'horlogerie
EP3252546B1 (fr) * 2016-06-03 2019-08-28 The Swatch Group Research and Development Ltd Mécanisme d'horlogerie à réglage d'inertie de balancier
CH713286B1 (fr) * 2016-12-23 2020-11-30 Mft Et Fabrique De Montres Et Chronometres Ulysse Nardin Le Locle S A Balancier pour mouvement d'horlogerie mécanique.
US11402804B2 (en) * 2018-02-12 2022-08-02 The Swatch Group Research And Development Ltd Timepiece oscillator insensitive to angular acceleration caused by wear
EP3627237B1 (fr) * 2018-09-20 2022-04-06 ETA SA Manufacture Horlogère Suisse Composant en materiau micro-usinable pour resonateur à haut facteur de qualité
USD922893S1 (en) * 2019-05-07 2021-06-22 Nivarox-Far Sa Watch component
EP3835879B1 (fr) * 2019-12-09 2024-01-24 The Swatch Group Research and Development Ltd Mecanisme resonateur d'horlogerie avec masse inertielle a reglage d'inertie et de balourd
EP3968097A1 (fr) * 2020-09-09 2022-03-16 Nivarox-FAR S.A. Ensemble horloger et son procédé de fabrication
EP4194964A1 (fr) * 2021-12-10 2023-06-14 Nivarox-FAR S.A. Balancier à reglage d'inertie

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Publication number Publication date
KR101457312B1 (ko) 2014-11-04
US8944675B2 (en) 2015-02-03
US20130188461A1 (en) 2013-07-25
WO2012010410A1 (fr) 2012-01-26
EP2410386A1 (fr) 2012-01-25
CH705541B1 (fr) 2016-03-31
EP2596407B1 (fr) 2018-11-21
EP2596407A1 (fr) 2013-05-29
CN103097966B (zh) 2014-09-17
JP2013531258A (ja) 2013-08-01
HK1185154A1 (en) 2014-02-07
KR20130041912A (ko) 2013-04-25
JP5551313B2 (ja) 2014-07-16
CN103097966A (zh) 2013-05-08

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