EP4310601A1 - Organe réglant d'horlogerie a guidage flexible muni de moyens de compensation de la pression - Google Patents

Organe réglant d'horlogerie a guidage flexible muni de moyens de compensation de la pression Download PDF

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Publication number
EP4310601A1
EP4310601A1 EP22186288.1A EP22186288A EP4310601A1 EP 4310601 A1 EP4310601 A1 EP 4310601A1 EP 22186288 A EP22186288 A EP 22186288A EP 4310601 A1 EP4310601 A1 EP 4310601A1
Authority
EP
European Patent Office
Prior art keywords
regulating member
member according
external pressure
elastic
flexible
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
EP22186288.1A
Other languages
German (de)
English (en)
French (fr)
Inventor
Gianni Di Domenico
Baptiste Hinaux
Mohammad Hussein Kahrobaiyan
Jean-Luc Helfer
Pascal Winkler
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.)
Swatch Group Research and Development SA
Original Assignee
Swatch Group Research and Development 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 Swatch Group Research and Development SA filed Critical Swatch Group Research and Development SA
Priority to EP22186288.1A priority Critical patent/EP4310601A1/fr
Priority to JP2023105654A priority patent/JP2024014754A/ja
Priority to US18/348,719 priority patent/US20240027964A1/en
Priority to CN202310906806.6A priority patent/CN117434815A/zh
Publication of EP4310601A1 publication Critical patent/EP4310601A1/fr
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
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/04—Oscillators acting by spring tension
    • G04B17/045—Oscillators acting by spring tension with oscillating blade springs
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/04—Oscillators acting by spring tension
    • 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
    • G04B17/24—Compensation of mechanisms for stabilising frequency for the effect of variations of atmospheric pressure

Definitions

  • the invention relates to a watchmaking regulating member with flexible guidance provided with pressure compensation means.
  • the sprung balance constitutes the time base of the watch. It is also called a resonator or regulating organ.
  • a spiral spring plays the role of an elastic return element for the inertial element that constitutes a balance wheel. This balance wheel is guided in rotation by pivots, which generally rotate in plain ruby bearings.
  • such a mechanical resonator may be subject to disturbances caused by changes in external parameters, which generate variations in frequency of the resonator. These parameters are for example temperature, pressure, humidity, or the direction of gravity. The variation in frequency of the resonator results in an error in the measurement of time.
  • the document CH 704687 describes a regulating member comprising a spiral spring and a member for correcting the position of the eyebolt to correct deformations of the spiral spring due to temperature.
  • the aim of the present invention is to overcome all or part of the drawbacks cited above by proposing a watchmaking regulating member with flexible guidance provided with pressure compensation means, which are precise and adaptable to flexible guides.
  • the invention relates to a regulating member for a clock movement, the regulating member comprising an oscillating mass, for example a balance wheel, a flexible guide comprising at least two flexible blades connecting a rigid support to the oscillating mass to allow the oscillating mass to perform a rotary movement around a virtual pivot.
  • an oscillating mass for example a balance wheel
  • a flexible guide comprising at least two flexible blades connecting a rigid support to the oscillating mass to allow the oscillating mass to perform a rotary movement around a virtual pivot.
  • the regulating member comprises an elastic device for compensating for the external pressure, the elastic compensation device being arranged in series with the rigid support, so as to connect the rigid support to means for fixing the the regulating member on the clockwork movement, the elastic compensation device being configured to adapt its stiffness as a function of the external pressure in order to compensate for the effect of the external pressure on the regulating member.
  • the prestressing means exert a variable force or torque on the elastic element of the elastic compensation device as a function of the pressure, so that the regulating member substantially maintains a precise course despite significant modifications of pressure.
  • the prestressing means modify the force or the torque exerted on the elastic element, so that the stiffness of the flexible guide is modified.
  • the action of the regulating member is adjusted. Consequently, when the pressure changes, the elastic device is mechanically impacted to adjust the course of the flexible guide to this change.
  • the effective rigidity of the resonator includes the rigidity of the flexible guide and the rigidity of the elastic element.
  • the variable force or torque makes it possible to pre-stress the elastic element, preferably without pre-stressing the flexible guide and without moving the end of the flexible guide. By pre-stressing the elastic element, its rigidity changes, while the rigidity of the flexible guide remains unchanged, since it is not pre-stressed and its end does not move.
  • the rigidity of the resonator (rigidity of the flexible guide and rigidity of the elastic element) changes, which consequently modifies the operation of the resonator.
  • the elastic element being preferably more rigid than the flexible guide, the share of the rigidity of the elastic element in the overall rigidity is less than that of the flexible guide. Consequently, a modification of the rigidity of the elastic element modifies the rigidity of the entire resonator, and consequently fine-tunes its operation, which makes it possible to precisely adjust the frequency of our time base. We thus obtain great precision in maintaining walking depending on the pressure.
  • the elastic compensation device comprises an elastic element arranged between the support and the fixing means, as well as prestressing means for applying a variable force or torque on the elastic element in function of external pressure.
  • the prestressing means comprise an aneroid capsule whose volume varies as a function of the external pressure, so as to transmit a variable force or torque as a function of the external pressure.
  • the prestressing means comprise a spring part connected to the mobile support and to the aneroid capsule, the spring part transmitting the force or torque to the elastic element via the mobile support .
  • the aneroid capsule comprises a movable wall and a stationary wall connected by at least one spring.
  • the spring part comprises a single flexible blade and a translation table arranged in series between the aneroid capsule and the mobile support.
  • the movable wall is connected to the translation table of the flexible part.
  • the elastic element comprises a pair of uncrossed blades connecting the mobile support to the fixing means.
  • the prestressing means are arranged between the uncrossed blades of the elastic element.
  • the two main blades of the flexible guide are crossed.
  • the regulating member extends substantially in the same plane, except for the oscillating mass.
  • the elastic element has a rigidity greater than the rigidity of the flexible guide, preferably at least five times greater, or even at least ten times greater.
  • the invention also relates to a watch movement comprising such a regulating member.
  • THE figures 1 and 2 represent an embodiment of a regulating member 1 according to the invention, the regulating member 1, comprising an elastic device 50 configured to compensate for a variation in pressure exerted on the regulating member 1.
  • Such regulating members 1 are intended to be arranged in a clockwork movement to regulate it.
  • the regulating member 1 comprises a flexible guide 2 and an oscillating mass 19.
  • An oscillating mass can for example be annular in shape or a bone-shaped arm.
  • the oscillating mass 19 is here of annular shape, and comprises a branch 8 passing through the ring, the branch 8 being arranged to divide the ring into two parts, a first part comprising a third of the ring, and a second part comprising two thirds of the ring.
  • the oscillating mass 19 includes unbalance adjustment screws 20, here three screws. The adjustment screws 20 are distributed angularly around the ring, and they pass through the ring towards the center of the ring.
  • the regulating member 1 extends substantially in the same plane, except the oscillating mass 19, which oscillates in a parallel plane, in a rotary movement around a virtual pivot, for example above the flexible guide 2 .
  • the flexible guide 2 comprises two main flexible blades 9, and a rigid support 3.
  • the flexible guide 2 extends along a main axis of symmetry.
  • the main flexible blades 9 are joined on the one hand to the rigid support 3 of the flexible guide 2, and on the other hand to the branch 8 of the oscillating mass 19.
  • the two main blades 9 of the flexible guide 2 are crossed, preferably straight and of the same length.
  • the crossing point of the main flexible blades 9 is closer to the rigid support 3 than to the branch 8.
  • the main flexible blades 9 are centered, so that the main axis of symmetry passes through a straight line dividing the ring in two.
  • the flexible guide 2 is arranged inside the ring in the second larger part.
  • the rigid support 3 has an elongated, substantially parallelepiped body.
  • the regulating member 1 comprises an elastic pressure compensation device 50, the elastic device being arranged in series with the rigid support 3 so as to connect the rigid support 3 to fixing means 7 of the member setting 1 on the clockwork.
  • the elastic compensation device 50 is configured to adapt its stiffness as a function of variations in the surrounding pressure in order to compensate for the effect of these variations on the regulating member 1.
  • the elastic compensation device 50 preferably has a stiffness greater than the pair of main flexible blades 9.
  • the elastic compensation device 50 comprises an elastic element 5 arranged between the rigid support 3 and the fixing means 7, as well as prestressing means 6 for applying a variable force or torque on the elastic element 5 and the rigid support 3 depending on the pressure.
  • the elastic element 5 comprises a pair of uncrossed blades 4 connecting the rigid support 3 to the fixing means 7.
  • the uncrossed blades 4 extend from the rigid support 3, on the side opposite to the side of the main flexible blades 9 to the fixing means 7 moving away from each other.
  • the prestressing means 6 are arranged between the flexible blades of the pair of uncrossed blades 4.
  • the prestressing means 6 comprise a spring part exerting the variable force or torque on the rigid support 3.
  • the stiffness of the elastic device is modified, because the prestressing means 6 modify the stiffness of the uncrossed blades 4.
  • the spring part is further configured to experience a variable force or torque, which is transmitted to the elastic element 5.
  • the prestressing means 6 comprise an aneroid capsule 10.
  • Such a capsule is generally used to measure atmospheric pressure.
  • the capsule comprises a space at least partly empty of air, and comprises a spring-type elastic return element in the space to retain a movable wall of the capsule.
  • the aneroid capsule 10 comprises a variable volume depending on the external pressure.
  • the aneroid capsule 10 comprises a movable wall 13 and a stationary wall 15 connected by at least one spring 16.
  • a sealed enclosure not shown in the figures, makes it possible to establish at least part of the vacuum inside the movable walls 13 and immobile 15.
  • the immobile wall 15 is integrally connected to the fixing means 7.
  • the immobile wall 15 has an L shape, the large segment 21 of which is substantially parallel to the fixing means 7 and to the support, and the small segment 22 is connected to the means of fixing 7 perpendicular to the large segment 21.
  • the movable wall 13 has an L shape, the movable wall 13 being arranged head to tail relative to the stationary wall 15, so that the large segments 17, 21 of the L are substantially opposite each other, and that the small segments 18, 22 of the L are substantially opposite each other.
  • the prestressing means 6 further comprise at least one spring, here two springs 16 connecting the large segments 17, 21 on the interior side, which form the elastic return element of the aneroid capsule.
  • the springs 16 extend, particularly when the pressure drops, or contract, particularly when the pressure increases. Thus, they bring the movable wall 13 closer to or further away from the immobile wall 15.
  • the spring part of the prestressing means 6 is connected to the mobile support 3 and to the aneroid capsule 10, the spring part transmitting the force or torque from the aneroid capsule 10 to the elastic element 5 via the mobile support 3.
  • the spring part comprises a single flexible blade 11 connected perpendicularly to the rigid support 3 on the same side as the uncrossed blades 4.
  • the single flexible blade 11 makes it possible to transmit the prestressing force to the mobile support 3 while leaving the mobile support 3 free to rotate .
  • the spring part also comprises a translation table 33 arranged in series between the movable wall 13 and the single flexible blade 11.
  • the translation table 33 comprises two substantially parallel flexible blades 14 and a movable element 12.
  • the flexible blades 14 connect the movable element 12 on the interior side of the small segment of the L of the movable wall 13, parallel to the large segments of the L.
  • the function of the translation table 33 is to transform the spacing of the capsule into a prestressing force on the mobile support 3.
  • the movable element 12 is a parallelepiped connected to the rigid support 3 by the single flexible blade 11, the two flexible blades 14 of the translation table 33 being arranged perpendicular to the single flexible blade 11.
  • the single flexible blade 11 extends from the upper side of the movable element 12 to the middle of the lower side of the rigid support 3.
  • the movable wall 13 approaches or moves away from the stationary wall 15 and the rigid support 3.
  • the movable element 12 of the translation table experiences a more or less significant thrust force towards the support rigid 3, this force being transmitted to the rigid support 3 via the single flexible blade 11.
  • the prestressing means 6 exert a variable spacing force between the rigid support 3 and the fixing means 7. Consequently, the stiffness of the elastic element 5 varies, and makes it possible to adapt the operation of the balance to the conditions. external pressure to maintain the precision of the regulating organ.
  • the invention also relates to a watch movement, not shown in the figures, the movement comprising a regulating member 1 as described above.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Springs (AREA)
  • Electric Clocks (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)
EP22186288.1A 2022-07-21 2022-07-21 Organe réglant d'horlogerie a guidage flexible muni de moyens de compensation de la pression Pending EP4310601A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP22186288.1A EP4310601A1 (fr) 2022-07-21 2022-07-21 Organe réglant d'horlogerie a guidage flexible muni de moyens de compensation de la pression
JP2023105654A JP2024014754A (ja) 2022-07-21 2023-06-28 圧力補償手段があるフレキシブルガイドを備える計時器用調速メンバー
US18/348,719 US20240027964A1 (en) 2022-07-21 2023-07-07 Horological regulating member with flexible guide provided with means for compensating for pressure
CN202310906806.6A CN117434815A (zh) 2022-07-21 2023-07-21 设有压力补偿装置、带柔性引导件的钟表调节部件

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22186288.1A EP4310601A1 (fr) 2022-07-21 2022-07-21 Organe réglant d'horlogerie a guidage flexible muni de moyens de compensation de la pression

Publications (1)

Publication Number Publication Date
EP4310601A1 true EP4310601A1 (fr) 2024-01-24

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ID=82656793

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22186288.1A Pending EP4310601A1 (fr) 2022-07-21 2022-07-21 Organe réglant d'horlogerie a guidage flexible muni de moyens de compensation de la pression

Country Status (4)

Country Link
US (1) US20240027964A1 (ja)
EP (1) EP4310601A1 (ja)
JP (1) JP2024014754A (ja)
CN (1) CN117434815A (ja)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR410898A (fr) * 1909-12-14 1910-06-01 Frederic Ecaubert Perfectionnements apportés aux régulateurs d'échappement pour horlogerie
CH704687A1 (fr) 2011-03-23 2012-09-28 Lvmh Swiss Mft Sa Organe réglant pour pièce d'horlogerie.
EP2911912A1 (de) 2012-10-29 2015-09-02 TRW Automotive Electronics & Components GmbH Betätigungsbaugruppe für ein bedienelement, lenkstockhebel sowie lenkstockbaugruppe
EP4016193A1 (fr) * 2020-12-18 2022-06-22 Omega SA Mecanisme resonateur d' horlogerie a guidage flexible muni de moyens d' ajustement de la rigidite

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR410898A (fr) * 1909-12-14 1910-06-01 Frederic Ecaubert Perfectionnements apportés aux régulateurs d'échappement pour horlogerie
CH704687A1 (fr) 2011-03-23 2012-09-28 Lvmh Swiss Mft Sa Organe réglant pour pièce d'horlogerie.
EP2911912A1 (de) 2012-10-29 2015-09-02 TRW Automotive Electronics & Components GmbH Betätigungsbaugruppe für ein bedienelement, lenkstockhebel sowie lenkstockbaugruppe
EP4016193A1 (fr) * 2020-12-18 2022-06-22 Omega SA Mecanisme resonateur d' horlogerie a guidage flexible muni de moyens d' ajustement de la rigidite

Also Published As

Publication number Publication date
US20240027964A1 (en) 2024-01-25
JP2024014754A (ja) 2024-02-01
CN117434815A (zh) 2024-01-23

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