EP4357858A1 - Spiralfeder für resonatormechanismus einer uhr mit mitteln zur einstellung der steifigkeit - Google Patents

Spiralfeder für resonatormechanismus einer uhr mit mitteln zur einstellung der steifigkeit Download PDF

Info

Publication number
EP4357858A1
EP4357858A1 EP22202272.5A EP22202272A EP4357858A1 EP 4357858 A1 EP4357858 A1 EP 4357858A1 EP 22202272 A EP22202272 A EP 22202272A EP 4357858 A1 EP4357858 A1 EP 4357858A1
Authority
EP
European Patent Office
Prior art keywords
spiral spring
flexible element
ribbon
elongated flexible
stiffness
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
EP22202272.5A
Other languages
English (en)
French (fr)
Inventor
Ivan Hernandez
Romain Le Moal
Roberto Frosio
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.)
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 EP22202272.5A priority Critical patent/EP4357858A1/de
Priority to US18/472,436 priority patent/US20240126208A1/en
Priority to JP2023172640A priority patent/JP2024059582A/ja
Priority to CN202311354638.0A priority patent/CN117908350A/zh
Publication of EP4357858A1 publication Critical patent/EP4357858A1/de
Pending legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B17/00—Mechanisms for stabilising frequency
    • 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
    • G04B17/066—Manufacture of the spiral spring
    • 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
    • G04B18/023—Regulator or adjustment devices; Indexing devices, e.g. raquettes with means for fine adjustment of the indexing device
    • 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

Definitions

  • the invention relates to a spiral spring for a watch resonator mechanism, the spiral spring being provided with means for adjusting the stiffness of said spiral spring.
  • the invention also relates to a watch resonator mechanism provided with such a spiral spring.
  • the sprung balance constitutes the time base of the watch. It is also called a resonator.
  • the balance spring must generally be adjustable to improve the accuracy of a watch.
  • means are used for adjusting the stiffness of the spiral spring, such as a racket to modify the effective length of the spring.
  • the effectiveness of a traditional snowshoe for adjusting 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 wheel.
  • screws By acting on the screws, we modify the inertia of the balance, which has the effect of modifying its course.
  • this adjustment mode is not easy to carry out, because it disrupts the balancing of the balance, and still does not make it possible to obtain sufficient fineness of adjustment of the operation of the oscillator.
  • the aim of the present invention is to overcome all or part of the drawbacks mentioned above, 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 stiffness effective of said hairspring.
  • the invention relates to a spiral spring, in particular for a watch resonator mechanism, the spiral spring comprising a flexible ribbon wound on itself in several turns, the ribbon having a predefined stiffness, the spring -spring comprising means for adjusting its stiffness.
  • the adjustment means comprise a first elongated flexible element, and a second elongated flexible element each arranged in series with the ribbon, each elongated flexible element connecting the same end of said ribbon to a fixed support, so as to to add additional stiffness to the ribbon, each elongated flexible element preferably having a stiffness greater than that of the ribbon, the adjustment means comprising prestressing means to apply at least two different adjustable forces, the two forces applying to the first flexible element elongated so as to vary the stiffness of the first elongated flexible element as a function of the prestress level.
  • the invention it is possible to modify the stiffness of at least one of the two elongated flexible elements, such as flexible blades. Indeed, when we apply two forces such as those mentioned previously, we manage to vary the stiffness of the elongated flexible element. Indeed, with a single effort applied, whether a force or a torque, the stiffness of the elongated flexible element remains the same. With two perpendicular forces on a blade, longitudinally and orthogonally, we obtain an overall force, which varies the stiffness of the elongated flexible element. The combination of two efforts is essential to achieve this.
  • the intensity level of the stress is modulated, which results in a modification of the stiffness of the assembly comprising the elongated flexible elements and the ribbon.
  • the flexible elements placed in series with the ribbon provide additional stiffness, which combines with that of the ribbon.
  • a flexible element in series of the ribbon is placed between one end of the ribbon and the fixed support.
  • This flexible element provides additional adjustable stiffness between the ribbon and the ribbon attachment point, and it 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. Variable forces are then applied to pre-stress the flexible element without pre-stressing the ribbon. By pre-stressing the flexible element, its stiffness changes, while the stiffness of the ribbon remains substantially unchanged. By changing the stiffness of the flexible element, the stiffness of the resonator (stiffness of the ribbon and stiffness of the flexible element changes, which consequently modifies the operation of the resonator.
  • the first force is provided by a first traction/compression force directed substantially in the longitudinal direction F L of the first elongated flexible element.
  • the first force further exerts a first force directed substantially in a direction substantially orthogonal F T to the longitudinal direction of the second elongated flexible element.
  • the second force is provided by a second force directed substantially in a direction substantially orthogonal F T to the longitudinal direction of the first elongated flexible element.
  • the second force also exerts a second traction/compression force directed substantially in the longitudinal direction F L of the second elongated flexible element.
  • the first and the second elongated flexible element each comprise a single flexible blade.
  • the first and the second elongated flexible element each comprise a pair of main flexible blades.
  • the first flexible element is arranged in a radial direction of the spiral spring.
  • the second flexible element is arranged in a direction tangential to the spiral spring.
  • the first and the second elongated flexible element are substantially perpendicular to each other.
  • the prestressing means comprise two secondary flexible blades connected at the end, each secondary flexible blade being arranged in the extension of one of the elongated flexible elements.
  • the prestressing means comprise two rigid bodies each arranged at the end of each secondary flexible blade.
  • the prestressing means comprise variable support means on each rigid body.
  • the forces are continuously adjustable by the prestressing means.
  • the first and the second flexible element are arranged at an external end of the ribbon.
  • the end of the ribbon comprises an appendage, the prestressing means and the elongated flexible elements being joined to the appendage.
  • the end of the ribbon is more rigid than the elongated flexible elements and the ribbon.
  • the elongated flexible elements comprise a flexible neck.
  • the prestressing means are configured to allow adjustment of the two forces to different intensities.
  • the invention also relates to a rotary resonator mechanism, in particular for a watch movement, comprising an oscillating mass and such a spiral spring.
  • THE figures 1 and 2 each show a schematic representation of a different embodiment of a spiral spring 1, 10, in particular for a watch resonator mechanism.
  • the spiral spring extends substantially in the same plane.
  • the spiral spring 1, 10 comprises a flexible ribbon 2 wound on itself in several turns, the ribbon 2 having a predefined stiffness.
  • the spiral spring 1, 10 includes means for adjusting its stiffness.
  • the adjustment means are particularly operable when the spiral spring 1, 10 is mounted on a plate of a clock movement, not shown in the figures.
  • the adjustment means comprise a first 5 and a second elongated flexible element 15 extending longitudinally.
  • Each flexible element 5, 15 is arranged in series with the ribbon 2, the first 5 and the second flexible element 15 connect the same end 4 of said ribbon 2 to a fixed support 11, 14.
  • the ribbon 2 is connected to the fixed support 11, 14 only by these two flexible elements 5, 15.
  • the flexible elements 5, 15 are integral with one of the ends 4 of the ribbon 2.
  • the two flexible elements 5, 15 are arranged perpendicular to each other.
  • the embodiments described below include flexible elements 5, 15 secured to the outer end 4 of the ribbon 2.
  • the inner end 19 of the ribbon 2 is intended to be assembled to a support 3 of an oscillating mass of the resonator 1.
  • the flexible elements 5, 15 add additional stiffness to that of the ribbon 2.
  • the flexible elements 5, 15 preferably have a stiffness greater than that of the ribbon 2.
  • the first flexible element 5 is here arranged in the extension of the ribbon 2, while that the second flexible element 15 is arranged perpendicular to the first flexible element 5.
  • the adjustment means and the ribbon 2 are in one piece, or even made of the same material.
  • the external end 4 of the ribbon 2 is here curved perpendicularly to form an appendix 9.
  • the appendix 9 serves as an attachment point, and allows forces to be received. It is preferably substantially rigid, that is to say at least more rigid than the ribbon 2 and/or the elongated flexible elements 5, 15, to minimize its influence on the stiffness of the ribbon 2.
  • each elongated flexible element 5, 15 is a single flexible blade 13, 15 connecting the appendix 9 to the fixed support 11.
  • the first single flexible blade 13 is arranged in the extension of the appendix 9, while that the second single flexible blade 13 is arranged in a direction substantially perpendicular to the appendix 9.
  • the first single flexible blade 13 is arranged in a radial direction, preferably passing through the center of the spiral spring 1, in the rest position of the spiral spring 1, while the second flexible blade is arranged in a direction tangential to the ribbon 2.
  • each elongated flexible element 5, 15 comprises a pair of main blades 23, 25 extending from the appendix 9 to the fixed support 11.
  • the main blades 23, 25 of each pair extend from the appendix 9 to 'to the fixed support 11 and form for example an angle of between 10 and 40° between them.
  • the spiral spring 1 further comprises prestressing means 6 for applying at least two different forces to at least one of the flexible elements 5, 15, preferably the two flexible elements 5, 15. For example, the two forces are produced on the first flexible element 5,
  • the two forces are preferably a longitudinal traction-compression force F L , and an orthogonal force F T , which are variable.
  • the longitudinal force F L is directed in the longitudinal direction of the first flexible element 5, while the orthogonal force F T , is directed in a direction perpendicular to the longitudinal direction of the first flexible element 5, the two forces preferably belonging to the plane of the spiral spring 1, 10.
  • the end 4 of the ribbon 2 can be mobile.
  • the longitudinal forces F L and orthogonal forces F T are continuously adjustable by the prestressing means 6.
  • the forces F L and F T are not restricted to discrete values.
  • the stiffness of the flexible element 5 can be finely adjusted with great precision.
  • prestressing means 6 are configured to modify the stiffness of the second flexible element 15.
  • the first force also exerts a first force directed substantially in a direction substantially orthogonal to the longitudinal direction of the second elongated flexible element 15.
  • a longitudinal force applied to one of the elongated flexible elements 5, 15, generates a substantially orthogonal force applied to the other flexible element.
  • the second force also exerts a second traction/compression force directed substantially in the longitudinal direction of the second elongated flexible element 15.
  • the prestressing means 6 comprise two means for applying a force to the elongated flexible elements 5, 15.
  • the application means each comprise two secondary flexible blades 12, 13.
  • Each secondary flexible blade 12, 13 is arranged in the extension of the elongated flexible element 5, 15, and is fixed on the other side of the appendix 9 .
  • the two secondary flexible blades 12, 13 are arranged perpendicular to each other.
  • the secondary blades 12, 13 can be replaced by usual springs.
  • Each secondary flexible blade 12, 13 is provided with a rigid body 14, 16 at the free end.
  • the rigid body 14, 16 allows the application of a variable force on the secondary flexible blade 12, 13 in order to adjust the force transmitted to the elongated flexible element 5, 15.
  • the prestressing means 6 further comprise variable support means on the rigid body 14, 16.
  • the rigid body 14, 16 moves, so that the secondary flexible blade 12, 13 is more or less bent, and therefore transmits a more or less significant force on the elongated flexible element 5, 15.
  • the rigidity of the elongated flexible element 5, 15 is modified, so that the action of the spring- hairspring is modified, and can be adjusted.
  • variable support means are for example a screw 24 in contact with the rigid body 14, 16, and arranged longitudinally in the direction of the secondary flexible blade 12, 13.
  • the secondary flexible blades 12 , 13 exert a force more or less important on the appendix 9, and therefore on the flexible elements 5, 15 elongated.
  • variable support means comprise a spring fixed on one side to the rigid body, and a movable body arranged at the other end of the spring.
  • the spring exerts a more or less significant force on the secondary flexible blade.
  • the prestressing means comprise a first magnet arranged on the rigid body, and a second movable magnet arranged at a distance from the rigid body.
  • pivoting lever assembled to the rigid body by a first end, the other end being free and serving as a means of actuating the lever by moving said free end.
  • the prestressing means are configured to allow adjustment of the two forces, here the two longitudinal traction/compression forces at different intensities.
  • a first application means allows adjustment in a wider adjustment range
  • a second application means allows adjustment in a finer adjustment range.
  • the secondary flexible blades 12, 13 have for example different sections or lengths.
  • the variable support means on the rigid bodies 14, 16 are configured to obtain different adjustment ranges, for example with a different screw pitch.
  • the invention also relates to a watch movement comprising such a spiral spring.
  • the spiral spring is used in particular to activate the movement of a balance wheel.
  • the flexible blades described in the different embodiments of the spiral spring can be continuous flexible blades, as is generally the case in the figures, or else blades with rigid sections and flexible necks. connecting the sections.
  • the flexible blades can take orientations other than radial and orthogonal to the spiral spring. Thus, it can be oriented in any direction between the radial and orthogonal directions.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Springs (AREA)
EP22202272.5A 2022-10-18 2022-10-18 Spiralfeder für resonatormechanismus einer uhr mit mitteln zur einstellung der steifigkeit Pending EP4357858A1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP22202272.5A EP4357858A1 (de) 2022-10-18 2022-10-18 Spiralfeder für resonatormechanismus einer uhr mit mitteln zur einstellung der steifigkeit
US18/472,436 US20240126208A1 (en) 2022-10-18 2023-09-22 Spiral spring for a horological resonator mechanism provided with means for adjusting the stiffness
JP2023172640A JP2024059582A (ja) 2022-10-18 2023-10-04 剛性を調整する手段を備える計時器用共振器機構のための渦巻きばね
CN202311354638.0A CN117908350A (zh) 2022-10-18 2023-10-18 用于钟表谐振器机构的设有用于调节刚度的装置的螺旋游丝

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22202272.5A EP4357858A1 (de) 2022-10-18 2022-10-18 Spiralfeder für resonatormechanismus einer uhr mit mitteln zur einstellung der steifigkeit

Publications (1)

Publication Number Publication Date
EP4357858A1 true EP4357858A1 (de) 2024-04-24

Family

ID=83903287

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22202272.5A Pending EP4357858A1 (de) 2022-10-18 2022-10-18 Spiralfeder für resonatormechanismus einer uhr mit mitteln zur einstellung der steifigkeit

Country Status (4)

Country Link
US (1) US20240126208A1 (de)
EP (1) EP4357858A1 (de)
JP (1) JP2024059582A (de)
CN (1) CN117908350A (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2138912B1 (de) * 2008-06-24 2012-07-04 Michel Belot Spiralfeder für Uhrwerk mit konzentrischer Entwicklung
EP2781970A1 (de) * 2013-03-19 2014-09-24 Nivarox-FAR S.A. Spiralfederregulierungsmechanismus einer Uhr
CH703273B1 (fr) * 2010-06-10 2015-02-27 Montres Breguet Sa Spiral Breguet à double courbe terminale.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2138912B1 (de) * 2008-06-24 2012-07-04 Michel Belot Spiralfeder für Uhrwerk mit konzentrischer Entwicklung
CH703273B1 (fr) * 2010-06-10 2015-02-27 Montres Breguet Sa Spiral Breguet à double courbe terminale.
EP2781970A1 (de) * 2013-03-19 2014-09-24 Nivarox-FAR S.A. Spiralfederregulierungsmechanismus einer Uhr

Also Published As

Publication number Publication date
JP2024059582A (ja) 2024-05-01
CN117908350A (zh) 2024-04-19
US20240126208A1 (en) 2024-04-18

Similar Documents

Publication Publication Date Title
EP4009115A1 (de) Spiralfeder für resonatormechanismus eines uhrwerks, der mit mitteln zum ausgleichen der starrheit ausgestattet ist
EP2290476B1 (de) Isochronismuskorrektor für Uhrhemmungsmechanismus und mit einem solchen Korrektor ausgestatteter Hemmungsmechanismus
CH710759A2 (fr) Oscillateur pour une pièce d'horlogerie.
EP3040783B1 (de) Untereinheit für einen mechanismus zur einstellung der geschwindigkeit in einem uhrwerk, und ein solcher mechanismus
EP4016194B1 (de) Resonatormechanismus eines uhrwerks mit flexibler führung, die mit mitteln zur einstellung der steifigkeit ausgestattet ist
EP3502788B1 (de) Vorrichtung zur selbstregulierung der aktiven länge einer spirale
CH713409B1 (fr) Balancier pour balancier-spiral du type thermocompensé, balancier-spiral du type thermocompensé, mouvement et pièce d'horlogerie.
EP4357858A1 (de) Spiralfeder für resonatormechanismus einer uhr mit mitteln zur einstellung der steifigkeit
CH720136A2 (fr) Ressort-spiral pour mécanisme résonateur d'horlogerie muni de moyens d'ajustement de la raideur.
EP4357857A1 (de) Spiralfeder für resonatormechanismus einer uhr mit mitteln zur einstellung der steifigkeit
CH718169A2 (fr) Mécanisme résonateur d'horlogerie à guidage flexible muni de moyens d'ajustement de la rigidité.
CH720139A2 (fr) Ressort-spiral pour mécanisme résonateur d'horlogerie muni de moyens d'ajustement de la raideur.
EP4187326A1 (de) Spiralfeder für resonatormechanismus eines uhrwerks, der mit mitteln zum ausgleichen der starrheit ausgestattet ist
CH719183A2 (fr) Ressort-spiral pour mécanisme résonateur d'horlogerie muni de moyens d'ajustement de la raideur.
CH712225B1 (fr) Dispositif régulateur comportant un organe de correction d'anisochronisme.
CH718113A2 (fr) Ressort-spiral pour mécanisme résonateur d'horlogerie muni de moyens d'ajustement de la rigidité.
EP3761122B1 (de) Drehteil für uhrhemmung, entsprechender hemmungsmechanismus und entsprechendes uhrenteil
EP4006648A1 (de) Spiralfeder für resonatormechanismus eines uhrwerks, der mit mitteln zur regulierung der effektiven länge dieser spiralfeder ausgestattet ist
EP4134754A1 (de) Trägheitsmasse, die mit einem flexiblen trägheitselement ausgestattet ist, insbesondere für uhrwerke
EP4286961A1 (de) Uhrregulierungsorgan mit einer präzisionsrückervorrichtung
CH718889A2 (fr) Masse inertielle munie d'un élément inertiel flexible, notamment pour l'horlogerie.
CH718097A2 (fr) Ressort-spiral pour mécanisme résonateur d'horlogerie muni de moyens de réglage de la longueur effective dudit ressort-spiral.
EP4386486A1 (de) Spiralfeder für resonatormechanismus einer uhr mit mitteln zur einstellung der flexibilität und zugehörige materialien
CH716864B1 (fr) Tourbillon pour mouvement horloger.
CH719744A2 (fr) Organe réglant d'horlogerie muni d'un système de raquetterie de précision

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR