EP2975470B1 - Guidage flexible horloger - Google Patents

Guidage flexible horloger Download PDF

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Publication number
EP2975470B1
EP2975470B1 EP14176919.0A EP14176919A EP2975470B1 EP 2975470 B1 EP2975470 B1 EP 2975470B1 EP 14176919 A EP14176919 A EP 14176919A EP 2975470 B1 EP2975470 B1 EP 2975470B1
Authority
EP
European Patent Office
Prior art keywords
construction
blades
rotation
assembly
blade
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
EP14176919.0A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2975470A1 (fr
Inventor
Marc Stranczl
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
Original Assignee
Nivarox Far 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 Nivarox Far SA filed Critical Nivarox Far SA
Priority to EP14176919.0A priority Critical patent/EP2975470B1/fr
Priority to CH01063/14A priority patent/CH709880A2/fr
Priority to JP2015136644A priority patent/JP5982540B2/ja
Priority to US14/796,297 priority patent/US9541902B2/en
Priority to CN201510408814.3A priority patent/CN105278310B/zh
Priority to RU2015128251/12A priority patent/RU2603570C1/ru
Publication of EP2975470A1 publication Critical patent/EP2975470A1/fr
Priority to HK16107135.3A priority patent/HK1219138A1/zh
Application granted granted Critical
Publication of EP2975470B1 publication Critical patent/EP2975470B1/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
    • G04B29/00—Frameworks
    • G04B29/04—Connecting or supporting parts
    • 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
    • G04B15/00—Escapements
    • G04B15/14—Component parts or constructional details, e.g. construction of the lever or the escape wheel
    • 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
    • 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
    • G04B17/08—Oscillators with coil springs stretched and unstretched axially
    • 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
    • G04B17/10—Oscillators with torsion strips or springs acting in the same manner as torsion strips, e.g. weight oscillating in a horizontal plane
    • 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
    • G04B31/00—Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor
    • G04B31/06—Manufacture or mounting processes
    • 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
    • Y10T29/4957—Sound device making

Definitions

  • the present invention relates to a flexible watchmaking guide, in particular a rotationally flexible guiding device for pivoting a member of a watch movement about an axis of rotation.
  • the spring blades extending in the radial direction are fragile and do not have an optimal shape for the desired function, namely a great flexibility in the plane orthogonal to the axis of rotation and a high rigidity in the direction of the 'rotation axis.
  • the control of the thickness of the blade is difficult to control precisely, which adversely affects the performance and especially the properties of flexibility, robustness and well defined elasticity parameters.
  • An object of the invention is to provide a guide device elastic rotationally compact and economical to manufacture, and having a good performance in use.
  • an elastic guide device in rotation for a watch mechanism allowing the rotation of an organ by relative to another member about an axis of rotation defining an axial direction.
  • the device includes construction blades, each construction blade includes an assembly attachment portion comprising a body and a functional portion extending from the body to an end, the assembly attachment portion and the functional portion being separated by at least one slot into at least two elastically connected extensions and extending in a radial direction, said radial direction being transverse to the axial direction, the device further comprising anchor zones disposed at opposite axial ends of the flexible guide device, configured to be attached to said members.
  • the assembly fastening portion of each of the building boards includes a recessing assembly recess and an assembly recess and an interlocking assembly that snap in a radial direction to be locked together.
  • the building boards are formed from a wafer of material, for example a crystalline material, defining a main plane, the building boards being oriented so that the The axis of rotation of the flexible guide is parallel to the main plane of the construction blades.
  • the thin plate comprises two layers of equal or different thicknesses welded or glued together, the building blade having portions with a thickness corresponding to the thickness of one of the layers and portions with a thickness of thickness corresponding to the thickness of the two layers.
  • the body represents a central portion of the device including an axis of rotation of the device.
  • one of the building boards comprises a slot forming the assembly cavity, the functional part the other blade is inserted into the slot until the body of the latter butts against the body of the first.
  • each building blade can be formed by deposition and / or etching processes in a substantially two-dimensional process.
  • the building boards may be formed by a LIGA type electroforming process.
  • the building boards are of a silicon-based material.
  • the building boards can be manufactured by an "SOI" - Silicon On Insulator - Silicon On Insulator process.
  • the structure consists of a stack of a silicon layer on an insulating layer.
  • This insulator may for example be sapphire or preferably silicon dioxide (SiO2).
  • the building boards may be Ni, NiP, or amorphous metal.
  • the building boards may also include sacrificial structures that assist in assembly.
  • each construction blade comprises a functional portion extending in a radial direction on either side of the body, this body forming a central portion of rotation relative to the ends of the blades.
  • the ends of the blades are free and floating.
  • the device can advantageously be configured as a spring, and simultaneously as a support, for a oscillator or a member pivoting about the axis of rotation, without the need for another pivot or support for the pivoting member.
  • each of the building boards includes only a functional portion extending from the assembly attachment portion, forming for example a substantially "V" configuration.
  • the building boards comprise a plurality of slots spaced apart in the axial direction to form a plurality of functional extensions having resilient portions.
  • each construction blade forms a monolithic structure.
  • the device comprises only two monolithic construction blades.
  • an elastically rotational guiding device 2 comprises construction blades 4a, 4b configured to be assembled and secured together to form the rotational elastic guiding device.
  • Each construction blade comprises at least one slot 12 separating the construction blade into at least two elastically coupled and removable parts.
  • the elastic guide device allows the rotation about an axis of rotation Z, of a member 1 (for example a rocker or an anchor) relative to another member 3 (for example a frame), the members attached to the device of elastic guide to the anchoring zones 9, 11 respectively.
  • the anchoring zones 9, 11 are arranged at opposite axial ends of the flexible guiding device, the axial direction being defined by the axis of rotation Z.
  • the building boards 4a, 4b comprise an assembly fastener portion 6, and a functional portion 10 extending from the assembly fastener portion to a free end 8, the assembly fastener portion 6, and the functional part 10 being separated by at least one slot 12 in at least two elastically connected extensions 17 extending in a radial direction X, Y transverse to the axial direction Z.
  • the device may have construction blades with functional parts on either side of the fastening portion 6 as shown in FIGS. figures 1 a and 1b, or with a functional part extending on one side of the fastening fastening portion 6 as illustrated in the Figures 2a to 2c .
  • the assembly fixing portion 6 may constitute a body 13, which in certain embodiments or variants, represents the central part of the device including the axis of rotation Z of the device.
  • the axial direction represented by the Z axis which is parallel to the axis of rotation of the rotationally elastic guiding device.
  • the radial direction is illustrated by the X and Y axes lying in a plane orthogonal to the orthogonal direction Z.
  • it is sought to have high rigidity in the axial direction and great flexibility in rotation.
  • the assembly fastening portion comprises a body 13a, 13b, the body 13b of at least one of the building boards 4b including an assembly recess or recess 14 configured for insertion in a radial direction of a part of the other construction blade 4a so that in the assembly fixing portion 6 the construction blades 4a, 4b intersect.
  • This intercrossing of assembly fixing parts of the two construction blades 4a, 4b is very advantageous since it makes it possible to independently manufacture the building boards in an optimal manner to define the thicknesses of the blade while having, once assembled, a rotationally guiding device with high rigidity in the axial direction Z.
  • each building blade 4a, 4b may be formed by known methods of deposition or etching, for example through a photolithography mask, silicon or other materials in an essentially two-dimensional process.
  • a two-dimensional process allows to obtain precise thicknesses on the length of the blade as well as shapes represented by different thicknesses on the length of the blade easy to manufacture with great precision via masks defined by simple photolithography processes.
  • the direction of growth or reduction of blades can be done only in a direction of elastic displacement Tx, Ty orthogonal to the radial direction X, Y , such a process being simple, economical and allowing good control of the thicknesses to obtain rigid blades in the axial direction Z but having a precise elasticity and well controlled with a uniform and robust structure.
  • the construction strips are formed from a plate cut from a block of material, in particular a crystalline material, the plate being commonly called "wafer".
  • the block of material may in particular be a monocrystalline silicon block or a block of another material used in the industry of wafers for integrated circuits or micromechanics.
  • the engraving of the building boards is carried out in a direction orthogonal to the main plane of the board (which is parallel to the cutting surface of the board).
  • the building boards are oriented so that the axis of rotation of the flexible guide, which extends in the axial direction Z, is parallel to the main plane of the building boards.
  • the properties and elastic characteristics of the building boards in their direction of elastic displacement Tx, Ty are therefore dependent on the thicknesses in the direction orthogonal to the main plane, these thicknesses being able to be very well controlled in economical manufacturing processes.
  • the plate may comprise two layers of equal or different thicknesses welded or glued together, which allows, in an etching process, to obtain precise thicknesses corresponding to the thicknesses of one or the other layers.
  • the interface between the two layers defines a threshold for precisely stopping the reduction of material at the interface during the etching process.
  • the precision in the formation of the thicknesses is an advantage to well control the elastic properties and the resistance of the building boards. In this embodiment, it is possible to manufacture economically and accurately two-level construction blades, having portions with a thickness corresponding to the thickness of one or other of the layers and portions with a thickness corresponding to the thickness of the two layers.
  • the building boards may also include sacrificial structures that assist in assembly.
  • one of the building boards 4b comprises a slot 14 forming the assembly cavity, the functional part 10 of the other board 4a being inserted in the slot 14 until the body 13a of the latter board against the body 13b of the construction blade 4b.
  • each construction blade 4a, 4b comprises a functional portion 10 extending in a radial direction on either side of the body 13a, 13b, this body forming a central portion of rotation relative to the ends 8 of the blades.
  • the ends 8 of the blades are free.
  • the ends 8 may be attached to a pendulum or to a frame or other structure.
  • the body 13a, 13b is fixed in the anchoring zones 9, 11 on either side of the slot 12 with two members, one being movable relative to the other.
  • one of the anchoring zones 9 may be attached to a frame, and the other of the anchoring zones to a pivoting member relative to the frame.
  • the device may serve as a spring and support for an oscillator or pivoting member about the axis of rotation Z, without the need for another pivot or support for the pivoting member.
  • the device may, however, be used in other configurations, for example the central body 13 may be attached to two movable members to the anchoring zones 9, 11, the ends 8 of the blades being coupled to a frame.
  • the building boards 4a, 4b each comprise only a functional extension portion 10 extending from the fixing portion 6 forming a "V" configuration.
  • the axial ends 9, 11 of the assembly fixing portion 6 may be coupled to members or movable structures relative to each other.
  • the assembly fastening portion 6 of each of the building boards 4a, 4b includes an assembly recess 14 and an assembly extension 15 which interlock and interlock to lock together.
  • the two construction blades can be locked together by a welding or brazing process, by an adhesive, or by a clamp or other mechanical clipping means.
  • the building boards 4a, 4b may comprise a plurality of slots 12 spaced in the axial direction Z as illustrated in FIG. Figure 2c , the figure 3 and the Figures 4a to 4c to form a plurality of functional extension portions having resilient portions 16. This increases the amplitude of the elastic rotation angle between the anchor zones 9, 11.
  • the building boards can have complex shapes while being simple to manufacture with precision, by varying the thickness in the direction of etching respectively deposition (direction T ) for example as illustrated in FIGS. Figures 2a to 2c with a functional part comprising elastic portions 16 and a rigid portion 18 interposed between the elastic portions and a radial slot 12 or several radial slots 12.
  • FIGS. Figures 4a to 4c Another example is illustrated in FIGS. Figures 4a to 4c , where the blades comprise elastic portions 16 extending substantially over the entire length of the blade and connected at their ends 8 to rigid portions 18, the rigid portions extending from the ends 8 to the pivot axis Z.
  • Elastic portions have thinner walls than the walls of the rigid portions.
  • the elasticity in the direction of rotation (direction T ) of the building boards can be controlled by varying the length of the rigid portions 18 respectively the length of the elastic portions 16, and also by varying the number of radial extensions, respectively of slots, stacked in the axial direction. This also makes it possible to control the distribution of masses and ultimately not only the spring constant but also the resonant frequencies, including first-order elastic system.
  • An advantage of the invention is that the building boards can be manufactured as structured pieces and in two levels: a first level which can be very thin, for example of the order of 10 ⁇ m to shape the flexible blades, and a thicker level, for example of the order of magnitude of 400 ⁇ m, to achieve rigid amounts, this essentially giving a structured two-level planar piece with slots.
  • the assembly of two blades by interlocking and interlocking is also very simple to perform.
  • a flexible guide according to the invention can be used for various applications, for example as guiding the anchor in a watch, or as a guide of the balance in a watch, the balance having no pivot axis to friction or spiral, these two elements being replaced by the flexible guide.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Micromachines (AREA)
  • Springs (AREA)
EP14176919.0A 2014-07-14 2014-07-14 Guidage flexible horloger Active EP2975470B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP14176919.0A EP2975470B1 (fr) 2014-07-14 2014-07-14 Guidage flexible horloger
CH01063/14A CH709880A2 (fr) 2014-07-14 2014-07-14 Guidage flexible horloger.
JP2015136644A JP5982540B2 (ja) 2014-07-14 2015-07-08 可撓性を有する計時器用ガイダンス
US14/796,297 US9541902B2 (en) 2014-07-14 2015-07-10 Flexible timepiece guidance
CN201510408814.3A CN105278310B (zh) 2014-07-14 2015-07-13 柔性钟表引导件
RU2015128251/12A RU2603570C1 (ru) 2014-07-14 2015-07-13 Упругий регулятор для часового механизма
HK16107135.3A HK1219138A1 (zh) 2014-07-14 2016-06-21 柔性鐘錶引導件

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP14176919.0A EP2975470B1 (fr) 2014-07-14 2014-07-14 Guidage flexible horloger
CH01063/14A CH709880A2 (fr) 2014-07-14 2014-07-14 Guidage flexible horloger.

Publications (2)

Publication Number Publication Date
EP2975470A1 EP2975470A1 (fr) 2016-01-20
EP2975470B1 true EP2975470B1 (fr) 2017-05-10

Family

ID=57890416

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14176919.0A Active EP2975470B1 (fr) 2014-07-14 2014-07-14 Guidage flexible horloger

Country Status (6)

Country Link
US (1) US9541902B2 (ja)
EP (1) EP2975470B1 (ja)
JP (1) JP5982540B2 (ja)
CN (1) CN105278310B (ja)
CH (1) CH709880A2 (ja)
RU (1) RU2603570C1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11520292B2 (en) 2018-12-13 2022-12-06 Eta Sa Manufacture Horlogere Suisse Timepiece resonator comprising at least one flexure bearing

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3299905B1 (en) 2016-09-27 2020-01-08 CSEM Centre Suisse d'Electronique et de Microtechnique SA - Recherche et Développement Mechanical oscillator for a horological movement
EP3382470B1 (fr) * 2017-03-29 2020-05-06 Patek Philippe SA Genève Oscillateur d'horlogerie a pivot flexible
CN109254517B (zh) * 2017-07-12 2023-11-07 天津海鸥表业集团有限公司 一种手表的擒纵调速模块及应用

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CH58264A4 (ja) * 1964-01-20 1965-09-15
CH452443A (fr) 1964-07-10 1968-05-31 Movado Montres Oscillateur pour pièces d'horlogerie
CH421827A (de) * 1964-07-31 1967-04-15 Centre Electron Horloger Mechanischer Resonator für Normalfrequenzoszillatoren in Zeitmessgeräten
CH496267A (fr) * 1965-03-22 1970-05-29 Movado Montres Oscillateur à torsion pour pièce d'horlogerie
CA824366A (en) * 1965-09-03 1969-10-07 Altenburger Paul Method of assembly of resonator
CH1385865A4 (ja) * 1965-10-07 1967-11-30
DE8602634U1 (de) * 1986-02-01 1986-04-10 Emil Schmeckenbecher Uhrenfabrik, 7730 Villingen-Schwenningen Elektrische Uhr mit dekorativem Torsionspendel
CH701421B1 (fr) 2009-07-10 2014-11-28 Manuf Et Fabrique De Montres Et Chronomètres Ulysse Nardin Le Locle Sa Oscillateur mécanique.
EP2703911B1 (fr) * 2012-09-03 2018-04-11 Blancpain SA. Organe régulateur de montre
EP2911012B1 (fr) * 2014-02-20 2020-07-22 CSEM Centre Suisse d'Electronique et de Microtechnique SA - Recherche et Développement Oscillateur de pièce d'horlogerie
CH709282B1 (fr) * 2014-03-10 2019-06-28 Mft Et Fabrique De Montres Et Chronometres Ulysse Nardin Le Locle S A Ancre suspendue pour échappement horloger.
EP2975469B1 (fr) * 2014-07-14 2017-07-05 Nivarox-FAR S.A. Guidage flexible horloger

Non-Patent Citations (1)

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Title
None *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11520292B2 (en) 2018-12-13 2022-12-06 Eta Sa Manufacture Horlogere Suisse Timepiece resonator comprising at least one flexure bearing
US11520291B2 (en) 2018-12-13 2022-12-06 Eta Sa Manufacture Horlogère Suisse Timepiece resonator comprising at least one flexure bearing

Also Published As

Publication number Publication date
JP2016020905A (ja) 2016-02-04
CH709880A2 (fr) 2016-01-15
RU2603570C1 (ru) 2016-11-27
EP2975470A1 (fr) 2016-01-20
CN105278310A (zh) 2016-01-27
JP5982540B2 (ja) 2016-08-31
US20160011567A1 (en) 2016-01-14
CN105278310B (zh) 2017-11-21
US9541902B2 (en) 2017-01-10

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