EP4009115A1 - Spiralfeder für resonatormechanismus eines uhrwerks, der mit mitteln zum ausgleichen der starrheit ausgestattet ist - Google Patents

Spiralfeder für resonatormechanismus eines uhrwerks, der mit mitteln zum ausgleichen der starrheit ausgestattet ist Download PDF

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Publication number
EP4009115A1
EP4009115A1 EP21202213.1A EP21202213A EP4009115A1 EP 4009115 A1 EP4009115 A1 EP 4009115A1 EP 21202213 A EP21202213 A EP 21202213A EP 4009115 A1 EP4009115 A1 EP 4009115A1
Authority
EP
European Patent Office
Prior art keywords
flexible
flexible element
hairspring
blades
rigidity
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.)
Pending
Application number
EP21202213.1A
Other languages
English (en)
French (fr)
Inventor
Mohammad Hussein Kahrobaiyan
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.)
Omega SA
Original Assignee
Omega 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
Application filed by Omega SA filed Critical Omega SA
Priority to US17/526,504 priority Critical patent/US20220171336A1/en
Priority to CN202111402459.0A priority patent/CN114578672A/zh
Priority to JP2021192759A priority patent/JP7270709B2/ja
Publication of EP4009115A1 publication Critical patent/EP4009115A1/de
Pending legal-status Critical Current

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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
    • G04B18/02—Regulator or adjustment devices; Indexing devices, e.g. raquettes
    • G04B18/026—Locking the hair spring in the indexing device, e.g. goupille of the raquette
    • 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
    • G04B17/32—Component parts or constructional details, e.g. collet, stud, virole or piton
    • G04B17/325—Component parts or constructional details, e.g. collet, stud, virole or piton for fastening the hairspring in a fixed position, e.g. using a block
    • 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
    • G04B18/04—Adjusting the beat of the pendulum, balance, or the like, e.g. putting into beat
    • G04B18/06—Adjusting the beat of the pendulum, balance, or the like, e.g. putting into beat by setting the collet or the stud of a hairspring

Definitions

  • the invention relates to a hairspring for a resonator clockwork mechanism, the hairspring being provided with means for adjusting the rigidity of said hairspring.
  • the invention also relates to a clockwork resonator mechanism fitted with such a hairspring.
  • the balance-spring constitutes the time base of the watch. It is also called resonator.
  • an inertial element To constitute a mechanical resonator, an inertial element, a guide and an elastic return element are required.
  • a spiral spring acts as an elastic return element for the inertial element that constitutes a balance. This balance wheel is guided in rotation by pivots which rotate in smooth ruby bearings.
  • the balance spring must generally be able to be adjusted to improve the precision of a watch.
  • means for adjusting the rigidity of the hairspring such as a racket, are used to modify the effective length of the spring.
  • its rigidity is modified to adjust the running precision of the watch.
  • the effect of a traditional snowshoe to adjust the gait remains limited, and it is not always effective in making the adjustment sufficiently precise, of the order of a few seconds or a few tens of seconds per day.
  • adjustment means comprising one or more screws arranged in the rim of the balance. By acting on the screws, the inertia of the balance wheel is modified, which has the effect of modifying its rate.
  • the object of the present invention is to overcome all or part of the aforementioned drawbacks by proposing a spiral spring provided with effective and precise adjustment means, configured in particular to adjust the rate of a timepiece by modifying the effective rigidity of said spiral.
  • the invention relates to a balance-spring for a clock resonator mechanism, the balance-spring comprising a flexible ribbon wound on itself according to several turns, the ribbon having a predefined rigidity, the balance-spring comprising means for adjusting its rigidity.
  • the adjustment means comprise a flexible element arranged in series with the ribbon, the flexible element connecting one end of said ribbon to a fixed support, so as to add additional rigidity to the ribbon, the element flexible having preferably a stiffness greater than that of the tape, the adjustment means comprising prestressing means for applying a force or a variable torque on the flexible element without modifying the position of the end of the tape, so as to vary only the stiffness of the flexible element.
  • the prestressing means by acting on the prestressing means, the force or the torque applied to the flexible element is modified, which leads to a modification of the rigidity of the assembly comprising the flexible element and the tape.
  • the flexible element placed in series with the tape provides additional rigidity to the tape, which is added to that of the tape.
  • the prestressing means apply a variable force or torque to the flexible element, they modify the rigidity of the flexible element and therefore of the assembly comprising the ribbon without modifying the rigidity of the ribbon, the end of which keeps the same position, regardless of the variable force or torque applied to the flexible element.
  • a flexible element is placed in series with the ribbon between one end of the ribbon and the fixed support.
  • This flexible element modifies the rigidity of the attachment point and provides additional flexibility to the resonator.
  • the effective stiffness of the resonator includes the stiffness of the ribbon and the stiffness of the flexible element.
  • a variable force or torque is then applied to pre-stress the flexible element without pre-stressing the tape and without moving the end of the tape. By pre-stressing the flexible element, its rigidity changes, while the rigidity of the ribbon remains unchanged, since it is not prestressed and its end does not move.
  • the rigidity of the resonator (ribbon rigidity and rigidity of the flexible element) changes, which consequently modifies the course of the resonator.
  • the flexible element is preferably more rigid than the tape, the share of the rigidity of the flexible element in the overall rigidity is lower than that of the tape. Consequently, a modification of the rigidity of the flexible element modifies the rigidity of the whole of the resonator, and consequently regulates its course in a fine way, which makes it possible to precisely adjust the frequency of our time base. Great precision is thus obtained in the adjustment of the rate, because it acts on a single element to adjust the rigidity.
  • the flexible element is arranged at an outer end of the tape.
  • the flexible element is arranged at an internal end of the tape.
  • the flexible element comprises a flexible neck.
  • the flexible element comprises a translation table provided with two substantially parallel flexible blades and with a movable rigid part to which the tape is connected.
  • the flexible element comprises a flexible guide provided with two crossed blades and with a movable rigid part to which the tape is connected.
  • the flexible element comprises a flexible guide provided with two uncrossed blades and with a movable rigid part to which the tape is connected.
  • the flexible element comprises a flexible ring to which the ribbon is connected.
  • the flexible element comprises a flexible arm to which the ribbon is connected.
  • the flexible element comprises a plurality of rigid sections connected by strips or flexible necks.
  • the flexible element comprises a flexible blade.
  • the torque or the force is continuously adjustable by the prestressing means.
  • the prestressing means comprise a screw configured to bear against the flexible element.
  • the prestressing means comprise a first magnet secured to the flexible element and a second magnet mobile relative to the first magnet.
  • the prestressing means comprise a spring and a movable element making it possible to stretch or compress the spring.
  • the spring comprises several substantially parallel flexible blades and another movable element.
  • the prestressing means comprise a secondary flexible strip connected to the flexible element.
  • the prestressing means comprise a lever.
  • the flexible element is arranged in series in the extension of the tape.
  • the hairspring extends substantially in one plane.
  • the entire length of the strip is used for the effective rigidity of the spiral spring.
  • no part of the ribbon is fixed during the oscillations.
  • the adjustment means are operable when the hairspring is mounted on a plate of a clock movement.
  • the invention also relates to a rotary resonator mechanism, in particular for a watch movement, comprising an oscillating mass and such a hairspring.
  • the figures 1 to 28 each show a schematic representation of a different embodiment of a spiral spring 1, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250, 260, 270, in particular for a clock resonator mechanism.
  • the hairspring extends substantially in one plane.
  • the spiral spring 1, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250, 260, 270 comprises a flexible ribbon 2 wound on itself in several turns, the ribbon 2 having a predefined stiffness.
  • the spiral spring comprises means adjustment of its stiffness.
  • the adjustment means are in particular operable when the hairspring is mounted on a plate of a clock movement.
  • the adjustment means comprise a flexible element 5 arranged in series with the ribbon 2, the flexible element 5 connecting one end 4, 9 of said ribbon 2 to a fixed support 11, 14, 17, 24, 29, 38, 44, 53, 93, 117, and integral with one of the ends 4, 9 of the ribbon 2.
  • the flexible element 5 adds additional rigidity to that of the ribbon 2.
  • the flexible element 5 preferably has a greater rigidity to that of the tape 2.
  • the flexible element 5 is here arranged in the extension of the tape 2.
  • the adjustment means 5 and the tape 2 are in one piece, or even formed from the same material.
  • the spiral spring 1, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250, 260, 270 further comprises prestressing means 6 for applying a variable force or torque to the flexible element 5.
  • prestressing means 6 for applying a variable force or torque to the flexible element 5.
  • the end of the tape 2 remains substantially immobile, regardless of the adjustment of the prestressing means.
  • the force or the torque applied to the flexible element 5 does not modify the position of the end 4 of the strip 2 to which the flexible element is assembled.
  • the end 4 of the ribbon 2 can be mobile.
  • the torque or the force is continuously adjustable by the prestressing means 6.
  • the torque or the force is not not restricted to point values.
  • the rigidity of the flexible element 5 can be adjusted with great precision.
  • the prestressing means 6 preferably allow the flexible element 5 to perform a movement in translation or in rotation in the plane of the hairspring. Thus, the rigidity of the flexible element 5 is varied.
  • the embodiments described below comprise a flexible element 5 secured to the outer end 4 of the strip 2.
  • the inner end 9 of the strip 2 is assembled to a support 3 of an oscillating mass of the resonator.
  • the flexible element is connected to the internal end 9 of the ribbon 2, so as to be in series between the ribbon 2 and the support 3 of the oscillating mass.
  • the flexible element 5 of the hairspring 1 comprises an elongated body 7 provided with a neck 8 thinned in the thickness of the material, the neck being flexible.
  • the flexible element 5 comprises a fixed support 14, for example joined to the main plate of the movement, and a movable part 15 joined to the outer end 4 of the strip 2, the fixed support 14 and the movable part 14 being connected by the neck 8.
  • a variable force or torque By applying a variable force or torque to the movable part 15, it moves relative to the fixed support 14.
  • the rigidity of the flexible element 5e and therefore of the assembly comprising the ribbon 2 is modified. and the flexible element 5.
  • the second embodiment of the spiral spring 10 of the picture 2 shows a flexible element 5 comprising a flexible ring 12 joined to the outer end 4 of the ribbon 2.
  • the flexible element 5 also comprises a fixed support 11 in the shape of a T, which is immobile with respect to movement.
  • the ring 12 is also linked to the base 13 of the T. Thus, by applying a variable force or torque to the ring 12, it deforms relative to the fixed support 11, so that the rigidity of the the flexible element 5.
  • the flexible element 5 of the hairspring comprises a flexible arm 16 and a fixed support 17 on which the arm 16 is attached cantilevered.
  • the outer end 4 of the tape 2 is attached to the end 18 of the arm 16 in its extension.
  • the variable force or torque is applied from preferably parallel to arm 16.
  • the figure 4 shows a spiral spring 30 whose flexible element 5 comprises a translation table.
  • the translation table comprises at least one secondary flexible blade, here two secondary flexible blades 21, 22, and a rigid part 23.
  • the flexible blades 21, 22 are joined by one end to the rigid part 23, and by another end to a fixed support 24.
  • the secondary flexible blades 21, 22 are substantially parallel and are arranged on different lines.
  • the secondary flexible blades 21, 22 are joined to the same face 25 of the rigid part 23.
  • the rigid part 23 has an elongated rectangular shape, on which the outer end 4 of the strip 2 is joined in its extension of one side of the rigid part 23.
  • the secondary flexible blades 21, 22 are substantially perpendicular to the rigid part 23 and to the outer end 4.
  • the variable force or torque is applied to the rigid part 23, preferably parallel to the blades 21, 22.
  • the flexible element 5 of the hairspring 40 comprises a pivot with crossed blades, the pivot comprising two crossed blades 27, 28, connected on the one hand to a fixed support 29 of the movement, and on the other hand to a rigid part 31 movable pivot.
  • the rigid part 31 has an elongated rectangular shape arranged perpendicularly to the outer end 4 of the tape 2, which is assembled on a large side of the rigid part 31, opposite to the side on which the cross blades 27, 28 are assembled.
  • the pivot with crossed blades 27, 28 is arranged so that the crossing of the blades is in the extension of the outer end 4 of the strip 2.
  • the variable force or torque is applied to the rigid part 31, from preference parallel to the axis of symmetry of the pivot with crossed blades and to the outer end 4 of the ribbon 2.
  • the flexible element 5 of the spiral spring 50 comprises a pivot with crossed blades, the pivot comprising two crossed blades 33, 34 joined at their intersection 35.
  • the blades 33, 34 are linked by on the one hand to a fixed support 38 of the movement, and on the other hand to a rigid part 37 in the form of a T.
  • the rod 39 of the T is joined to the outer end 4 of the ribbon, while the blades are joined to the bar 41 of the T.
  • the pivot with crossed blades is arranged so that the crossing of the blades is in the extension of the outer end 4 of the tape 2.
  • the variable force or torque is applied to the bar 37 of the T of the rigid part 37, the pivot being arranged obliquely with respect to the ribbon 2.
  • the flexible element 5 of the spiral spring 60 comprises a translation table arranged in the extension of the outer end 4 of the ribbon 2.
  • the translation table comprises at least one secondary flexible blade, here two secondary flexible blades 42, 43 , and a rigid part 45.
  • the secondary flexible blades 42, 43 are joined by one end to the rigid part 45, and by another end to a fixed support 44 with respect to the movement.
  • the secondary flexible blades 42, 43 are substantially parallel and are arranged on different lines.
  • the secondary flexible blades 42, 43 are joined to the same face of the rigid part 45.
  • the rigid part 45 has an elongated rectangular shape, on which the outer end 4 of the tape 2 is joined perpendicularly cantilevered. fake.
  • the secondary flexible blades 42, 43 are substantially parallel to the outer end 4 and perpendicular to the rigid part 45.
  • the variable force or torque is applied to the rigid part 45, in the direction of the secondary blades 42, 43. Thanks to the bending of the secondary flexible blades 42, 43, the rigid part 45 can move parallel to the fixed support 44. By pulling the outer end 4 of the ribbon 2, the displacement of the rigid part 45 varies the rigidity of the flexible element 5.
  • the eighth embodiment of the spiral spring 70 of the figure 8 comprises a flexible element 5 identical to that of the seventh embodiment of the figure 7 .
  • the spiral spring further comprises means 6 for prestressing the flexible element 5.
  • the prestressing means 6 comprise magnets 47, 48, a first magnet 47 being arranged on the rigid part 45 of the translation table, and a second magnet 48 being arranged to move relative to the first magnet 47.
  • the magnets 47, 48 attract or repel each other depending on their polarities, so that a force is applied to the rigid part 45.
  • the second magnet 48 is for example arranged on a movable element relative to the translation table.
  • the flexible element 5 of the spiral spring comprises a pivot with uncrossed flexible blades.
  • the pivot comprises two uncrossed flexible blades 51, 52 and a rigid part 54.
  • the flexible blades 51, 52 are joined, on the one hand laterally to an elongated fixed support 53, and on the other hand to the rigid part 54 by approaching one from the other.
  • the rigid part 54 has a circular shape with a smaller diameter than the fixed support 53.
  • the flexible blades 51, 52 approach from the fixed support 53 to the rigid part 54.
  • the outer end 4 of the ribbon is joined to the rigid part 54.
  • the variable force or torque is applied to the rigid part 45, obliquely with respect to the pivot.
  • the force is parallel to the axis of symmetry of the flexible leaf pivot.
  • the figures 10 to 20 are embodiments of spiral springs 90, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190 comprising a flexible element 5 identical to that of the ninth embodiment, but each having means for preload 6 different.
  • prestressing means 6 are of course adaptable to other embodiments of spiral springs with flexible elements 5 different from that of the ninth embodiment.
  • the tenth embodiment of the figure 10 comprises a screw 55 as prestressing means 6.
  • the screw 55 is positioned obliquely against the rigid part 54 of the pivot, preferably parallel to the axis of symmetry of the pivot.
  • the screw by screwing or unscrewing, the latter applies a variable force or torque to the rigid part 54, in particular in order to adjust the rigidity of the flexible element 5.
  • the prestressing means 6 comprise magnets 57, 58, a first magnet 57 being arranged on the rigid part 54, while a second magnet 58 is movable relative to the rigid part 54, in order to exert a force or a variable torque on the rigid part 54.
  • the variable force or torque is exerted obliquely on the rigid part 54 in order to adjust the rigidity of the flexible element 5.
  • the prestressing means 6 of the twelfth embodiment of the figure 12 comprise a spring 55 and a movable element 59.
  • the spring 55 is joined to the rigid part 54 of the pivot on the one hand, and to the movable element 59 on the other hand.
  • the spring applies a variable force or torque to the rigid part 54 in order to adjust the rigidity of the flexible element 5.
  • the thirteenth embodiment of the figure 13 shows a variation of the embodiment of the hairspring 110 of the figure 12 , in which a secondary flexible blade 61 is arranged in series in the extension of the spring 55 between the rigid part 54 of the pivot and the spring 55.
  • the prestressing means 6 are provided with a second movable element 62 on which are linked the spring 55 on one side, and the secondary flexible blade 61 on the other side.
  • the secondary flexible blade 61 is linked to the second mobile element 62 and to the rigid part 54.
  • the spiral spring 130 is similar to that of the figure 13 , the spiral spring 130 comprising prestressing means 6 provided with a secondary flexible blade 63 with a rigid section 64 in the middle of the secondary flexible blade 63.
  • the prestressing means 6 comprise, instead of the secondary flexible blade of the two previous embodiments, an elongated part 65 provided with at least one flexible neck, here two flexible necks 66, 67.
  • the part 65 comprises a section central rigid 69 and a flexible neck 66, 67 at each end, one neck being connected to the rigid part 54, the other neck being connected to the movable element 62.
  • the elongated part 65 is arranged in the extension of the spring 55.
  • the sixteenth and seventeenth embodiments of the figures 16 and 17 show the same prestressing means 6 oriented differently in the two figures.
  • the prestressing means 6 comprise a spring formed from flexible blades.
  • a secondary flexible blade 61 connects the rigid part of the flexible element 5 to a first rigid body 71 in the form of an elbow.
  • the prestressing means 6 comprise a second rigid body 75 in the shape of an elbow, as well as tertiary blades 72 connecting the two rigid bodies 71, 75.
  • the two rigid bodies 71, 75 are mobile and have substantially parallel segments two by two in rest position of the prestressing means 6.
  • the four tertiary blades 72 are substantially perpendicular to the secondary blade 61 in the rest position of the prestressing means 6.
  • the prestressing means 6 further comprise two quaternary blades 74 connecting the second body 75 to a fixed support 73.
  • the quaternary blades 74 are substantially parallel to the tertiary blades 72 and arranged on the same side of the second rigid body 75. In applying a variable force or torque to the second rigid body 75, the rigidity of the flexible element 5 is varied.
  • the prestressing means 6 are arranged in the axis of the flexible element 5, while on the figure 17 , the prestressing means 6 are arranged obliquely with respect to the flexible element 5.
  • the eighteenth embodiment of the figure 18 of the spiral spring 170 is similar to that of the seventeenth embodiment, except for the support 77 which is connected to the first mobile body 71 by the quaternary blades 78, and not to the second mobile body 76.
  • the support 77 and the blades quaternary blades 78 are arranged on the other side of the first mobile body 71 relative to the second mobile body 76 and the tertiary blades 72.
  • the quaternary blades 78 are substantially parallel to the tertiary blades 72 in the rest position of the hairspring 170.
  • the figure 19 shows prestressing means 6 similar to those of the figure 17 , to which a lever 81 has been added.
  • the lever 81 is connected to the second mobile body 75 by a five-year flexible blade 82 provided with a rigid central section 83 arranged in the extension of the second mobile body 75.
  • the five-year flexible blade 82 is substantially parallel to the secondary blade 61 in the rest position of the prestressing means 6.
  • the lever 81 is arranged perpendicular to the five-year flexible blade 82.
  • the lever is also connected to a second support 87 fixed by two five-year blades 84, 85 arranged either side of the lever 81.
  • the free end 86 of the lever is U-shaped, on which one can act by actuating it laterally, in order to apply a variable force or torque to the flexible element 5.
  • the prestressing means 6 comprise a lever 89 connected to the flexible element 5 by a spring 88, which may be helical or formed of a flat coil.
  • the spring is connected to the rigid part 54 of the flexible element 5 on the one hand, and to the lever 89 on the other hand.
  • the lever 89 can pivot around a fixed axis 91 passing through it at the end 92 connected to the spring.
  • the variable torque or the force exerted on the flexible element 5 is modified.
  • the twentieth-first embodiment of the hairspring 200 of the figure 21 comprises a flexible element 5 provided with a plurality of movable rigid sections 93, 94, 95, 96 joined by small flexible strips 97. In the rest position the sections 93, 94, 95, 96 and the small flexible strips 97 are arranged substantially on a straight line 98.
  • the flexible element 5 comprises four sections 93, 94, 95, 96 elongated in series and three small blades 97 each connecting two sections 93, 94, 95, 96 between them.
  • the first section 93 is a fixed support, while the other sections 94, 95, 96 are mobile.
  • the outer end 4 of the strip 2 is joined to the second section 94, the second section 94 comprising a lateral lug 99 on which the strip 2 is bound.
  • the sections 93, 94, 95, 96 and the small blades 97 extend tangentially to the spiral shape of the ribbon 2.
  • the prestressing means 6 further comprise a rigid body 75 in the form of an elbow, as well as secondary blades 72 connecting the rigid body 75 to the fourth section 96.
  • the four secondary blades 72 are substantially perpendicular to the straight line 98 in the rest position of the prestressing means 6.
  • the prestressing means 6 further comprise two tertiary blades 74 connecting the rigid body 75 to a fixed support 73.
  • the tertiary blades 74 are substantially parallel to the secondary blades 72 in the rest position of the prestressing means 6. applying a force or a variable torque on the bent part of the rigid body 75, the rigidity of the flexible element 5 is varied.
  • the force or the torque is partly transmitted to the fourth section 96 by the secondary blades 72, as well as to the other sections via the small blades 97.
  • the hairspring 210 is substantially the same as that of the figure 21 , the rigid sections 93, 94, 95, 96 being connected by flexible necks 101 instead small blades 97 of the figure 21 .
  • a collar 101 is an element of thinned material, which is flexible.
  • the embodiments of figures 23 to 25 of the spiral spring 220, 230, 240 each comprise a flexible element 5 such as that of the figures 9 to 20 , that is to say a pivot provided with two uncrossed flexible blades 51, 52 and a rigid part 104.
  • the rigid part 104 further comprises a lug 105 arranged at right angle on the side of the tape 2, and on which is joined the ending bet 4 of the tape 2.
  • the prestressing means 6 comprise a secondary flexible blade 61 joined at one end 108 to the circular part of the rigid part 104, preferably in the axis of symmetry of the pivot.
  • the secondary flexible blade 61 extends tangentially to the wound tape 2 in the rest position of the spiral spring.
  • the prestressing means 6 further comprise a lever 106 joined to the opposite end 109 of the secondary blade 61.
  • the lever 106 is preferably curved to circumvent the tape 2 wound. The force or the torque is applied to its free end 107 parallel to the secondary blade 61. Thus, the force or the torque is partly transmitted to the rigid part 104 through the secondary flexible blade 61.
  • the prestressing means 6 of the spiral spring 220 also comprise two tertiary blades 111, 112 substantially parallel.
  • the tertiary blades 111, 112 are joined on the one hand to the lever 106, at the level of the connection to the secondary blade 61.
  • the tertiary blades 111, 112 are connected on the other hand to a fixed support 113, and are substantially perpendicular to the secondary blade 61.
  • the 240 spiral spring of the figure 25 which takes up the characteristics of the embodiment of the figure 23 , further describes prestressing means 6 provided with tertiary blades 114, 115 uncrossed, which are joined to a fixed support 116 on the one hand, and to the lever 106 on the other hand.
  • the tertiary blades 114, 115 come together towards the lever 106 and are arranged in the curvature of the lever 106, being further from the connection with the secondary blade 61.
  • the spiral spring embodiments 250, 260, 270 of the figures 26 to 28 describe a flexible element 5 comprising a first flexible blade 119 and a movable rigid part 118, here rectangular, connected to the first flexible blade 119 and to the outer end 4 of the strip 2, preferably on the same side of the rigid part 118
  • the first flexible blade 119 is connected on the other hand to a fixed support 117.
  • the prestressing means 6 comprise a secondary flexible blade 122, 128 shorter, arranged on an opposite face of the rigid part 118 in the axis of the first flexible blade 119.
  • the first flexible blade 119 and the secondary flexible blade 122, 128 are arranged tangentially to the ribbon 2.
  • the secondary flexible blade 122 is connected to a second rigid part 121 of the prestressing means 6.
  • the force or the torque is exerted on the second rigid part 121 in the direction of the first 119 and secondary 122 flexible blades.
  • the secondary flexible blade 122 is connected to a curved lever 124 bypassing the ribbon 2 wound.
  • a tertiary flexible blade 123 connects the lever 124 to a fixed support 126, in the curvature of the lever 124.
  • the force or the torque is exerted on the free end 125 of the lever 124, preferably parallel to the first flexible blades 119 and secondary 122
  • the force or cut is partly transmitted to the secondary flexible blade 122, and to the first flexible blade 119.
  • the figure 28 shows an embodiment in which the secondary flexible blade 128 is connected by the other end to a curved lever 124 bypassing the wound tape 2.
  • the lever 124 is connected, in addition to the bent blade 128, to a semi-rigid structure 127 connected to the fixed support 117.
  • the semi-rigid structure 127 partially deforms when the lever 124 is operated by force or torque. The force or torque is exerted on the free end 125 of the lever.
  • the last embodiment of the figure 29 is similar to that of the figure 28 , the first flexible blade being replaced by a pivot with uncrossed flexible blades, as described in the embodiments of the figures 9 to 20 .
  • the pivot comprises two blades 51, 52 diverging from the rigid part 118 to the fixed support 117.
  • the flexible strips described in the different embodiments of the hairspring can be continuous flexible strips, as is generally the case in the figures, or else strips with rigid sections and flexible necks connecting the sections.
  • the invention also relates to a rotary resonator mechanism, in particular for a watch movement.
  • the resonator mechanism comprises an oscillating weight, not shown in the figures, and a hairspring as described previously.
  • the oscillating mass is for example an annular balance.
  • the oscillating weight is joined to the spiral spring to be integral with the support 3.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Springs (AREA)
EP21202213.1A 2020-12-02 2021-10-12 Spiralfeder für resonatormechanismus eines uhrwerks, der mit mitteln zum ausgleichen der starrheit ausgestattet ist Pending EP4009115A1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US17/526,504 US20220171336A1 (en) 2020-12-02 2021-11-15 Spiral spring for horological resonator mechanism provided with rigidity-adjustment means
CN202111402459.0A CN114578672A (zh) 2020-12-02 2021-11-23 设有刚度调节装置的用于钟表谐振器机构的螺旋状游丝
JP2021192759A JP7270709B2 (ja) 2020-12-02 2021-11-29 測時器共振器機構のための、剛性調節手段を備える渦巻ばね

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EP4286962A1 (de) 2022-06-02 2023-12-06 ETA SA Manufacture Horlogère Suisse Regulierorgan für uhr, das eine rückervorrichtung umfasst, die mit verriegelungsmitteln ausgestattet ist
EP4286961A1 (de) * 2022-06-02 2023-12-06 Omega SA Uhrregulierungsorgan mit einer präzisionsrückervorrichtung
EP4310602A1 (de) * 2022-07-21 2024-01-24 The Swatch Group Research and Development Ltd Regulierorgan für uhrwerk mit spiralfeder, das mit mitteln zum ausgleich der schwerkraft ausgestattet ist
EP4310600A1 (de) * 2022-07-21 2024-01-24 The Swatch Group Research and Development Ltd Regulierorgan für uhrwerk mit spiralfeder, das mit temperaturausgleichsmitteln ausgestattet ist
EP4325302A1 (de) * 2022-08-19 2024-02-21 The Swatch Group Research and Development Ltd Regulierorgan für uhr mit spiralfeder mit druckausgleichsmitteln
EP4357857A1 (de) * 2022-10-18 2024-04-24 Omega SA Spiralfeder für resonatormechanismus einer uhr mit mitteln zur einstellung der steifigkeit
EP4386486A1 (de) * 2022-12-15 2024-06-19 Omega SA Spiralfeder für resonatormechanismus einer uhr mit mitteln zur einstellung der flexibilität und zugehörige materialien

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EP2273323A2 (de) * 2009-07-10 2011-01-12 Manufacture et fabrique de montres et chronomètres Ulysse Nardin Le Locle SA Mechanischer Oszillator
EP2781969A1 (de) * 2013-03-19 2014-09-24 Nivarox-FAR S.A. Unzerlegbare Monoblock-Komponente einer Uhr

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EP2690507B1 (de) * 2012-07-26 2014-12-31 Nivarox-FAR S.A. Spiralfeder einer Uhr
CH709278A2 (fr) * 2014-02-17 2015-08-28 Swatch Group Res & Dev Ltd Régulation d'un résonateur d'horlogerie par action sur la longueur active d'un spiral.
EP2908187B1 (de) * 2014-02-17 2016-10-19 The Swatch Group Research and Development Ltd. Regulierung eines Resonators einer Uhr durch Einwirkung auf die aktive Länge einer Spiralfeder
EP2908188B1 (de) * 2014-02-17 2018-06-27 The Swatch Group Research and Development Ltd. Regulierung eines resonators einer uhr durch einwirkung auf die steifheit eines elastischen rückstellmittels
CH709279B1 (fr) * 2014-02-17 2018-12-14 Swatch Group Res & Dev Ltd Régulation en fréquence d'un résonateur d'horlogerie par action sur la raideur d'un moyen de rappel élastique.
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EP2273323A2 (de) * 2009-07-10 2011-01-12 Manufacture et fabrique de montres et chronomètres Ulysse Nardin Le Locle SA Mechanischer Oszillator
EP2781969A1 (de) * 2013-03-19 2014-09-24 Nivarox-FAR S.A. Unzerlegbare Monoblock-Komponente einer Uhr

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4286962A1 (de) 2022-06-02 2023-12-06 ETA SA Manufacture Horlogère Suisse Regulierorgan für uhr, das eine rückervorrichtung umfasst, die mit verriegelungsmitteln ausgestattet ist
EP4286961A1 (de) * 2022-06-02 2023-12-06 Omega SA Uhrregulierungsorgan mit einer präzisionsrückervorrichtung
EP4286960A1 (de) * 2022-06-02 2023-12-06 ETA SA Manufacture Horlogère Suisse Regulierorgan für uhr, das mit einer rückervorrichtung ausgestattet ist
EP4310602A1 (de) * 2022-07-21 2024-01-24 The Swatch Group Research and Development Ltd Regulierorgan für uhrwerk mit spiralfeder, das mit mitteln zum ausgleich der schwerkraft ausgestattet ist
EP4310600A1 (de) * 2022-07-21 2024-01-24 The Swatch Group Research and Development Ltd Regulierorgan für uhrwerk mit spiralfeder, das mit temperaturausgleichsmitteln ausgestattet ist
EP4325302A1 (de) * 2022-08-19 2024-02-21 The Swatch Group Research and Development Ltd Regulierorgan für uhr mit spiralfeder mit druckausgleichsmitteln
EP4357857A1 (de) * 2022-10-18 2024-04-24 Omega SA Spiralfeder für resonatormechanismus einer uhr mit mitteln zur einstellung der steifigkeit
EP4386486A1 (de) * 2022-12-15 2024-06-19 Omega SA Spiralfeder für resonatormechanismus einer uhr mit mitteln zur einstellung der flexibilität und zugehörige materialien

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CN114578672A (zh) 2022-06-03
US20220171336A1 (en) 2022-06-02
JP7270709B2 (ja) 2023-05-10
JP2022088332A (ja) 2022-06-14

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