EP3232276A1 - Komponente eines uhrwerks - Google Patents

Komponente eines uhrwerks Download PDF

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Publication number
EP3232276A1
EP3232276A1 EP17164654.0A EP17164654A EP3232276A1 EP 3232276 A1 EP3232276 A1 EP 3232276A1 EP 17164654 A EP17164654 A EP 17164654A EP 3232276 A1 EP3232276 A1 EP 3232276A1
Authority
EP
European Patent Office
Prior art keywords
glass
ceramic
component according
watch movement
cavity
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.)
Granted
Application number
EP17164654.0A
Other languages
English (en)
French (fr)
Other versions
EP3232276B1 (de
Inventor
Nicolas Yoakim
Gregory Bruttin
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.)
Richemont International SA
Original Assignee
Richemont International 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 Richemont International SA filed Critical Richemont International SA
Publication of EP3232276A1 publication Critical patent/EP3232276A1/de
Application granted granted Critical
Publication of EP3232276B1 publication Critical patent/EP3232276B1/de
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
    • G04B29/02—Plates; Bridges; Cocks
    • G04B29/027—Materials and manufacturing
    • 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
    • G04B13/00—Gearwork
    • 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
    • G04B17/20—Compensation of mechanisms for stabilising frequency
    • G04B17/28—Compensation of mechanisms for stabilising frequency for the effect of imbalance of the weights, e.g. tourbillon
    • G04B17/285—Tourbillons or carrousels
    • 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
    • G04B19/00—Indicating the time by visual means
    • 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
    • G04B21/00—Indicating the time by acoustic means
    • G04B21/02—Regular striking mechanisms giving the full hour, half hour or quarter hour
    • G04B21/06—Details of striking mechanisms, e.g. hammer, fan governor
    • 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
    • G04B23/00—Arrangements producing acoustic signals at preselected times
    • G04B23/02—Alarm clocks
    • G04B23/06—Alarm clocks adjustable for several preselected times with automatic stopping of the signal
    • 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
    • G04B5/00—Automatic winding up
    • G04B5/02—Automatic winding up by self-winding caused by the movement of the watch
    • G04B5/16—Construction of the weights

Definitions

  • watch movement components are made of metal alloys that often have disadvantages, including internal stresses following shaping operations, a tendency to oxidation, a limited hardness for certain alloys to be compensated by subsequent treatments to the machining steps, a certain sensitivity to wear, tribological characteristics requiring the use of lubricants, a high density resulting in significant inertia of moving parts, and in some cases a sensitivity to magnetic fields which can disrupt the operation of a watch movement.
  • the glasses have seen their use spread as a result of the development of hybrid production technologies, often involving the exposure of the material to a light wavelength and the etching of this irradiated zone in an appropriate environment.
  • photostructurable glasses most often sensitive to UV, or more standard glasses such as "fused silicate” (or quartz glass) or borosilicate, in the case of etching by exposure to a femtosecond laser. Exposure and chemical attack times, the equipment required and the geometries that are currently achievable greatly limit the use of such technologies.
  • the watch movement component according to the invention comprises a glass-ceramic, said glass-ceramic comprising a crystalline phase representing at least 50% by volume of said glass-ceramic, the rest of the glass-ceramic being a vitreous matrix, said crystalline phase being at least 50% of type mica.
  • the expression "glass-ceramic with a mica structure" is used to designate such a glass-ceramic.
  • At least one cavity is hollowed at least in part in the glass-ceramic and is filled at least in part with a second material.
  • the watch movement component according to the invention is typically obtained by at least one mechanical machining step by removing material from a substrate of said glass-ceramic.
  • at least 50% of these machining steps are machining mechanical machining steps, chosen for example from the following conventional mechanical machining techniques: turning, milling, polishing, satin finishing, mechanical etching, drilling or cutting.
  • the glass-ceramic component of the watch movement component according to the invention comprises metal ions of one of the elements of the rare earth group, such as, for example, europium or erbium ions, of one of the elements of the group of metals. transition, for example yttrium ions or one of the elements of the group of poor metals, for example bismuth ions.
  • a watch movement component comprising such a glass-ceramic comprises at least two zones with luminescences. different. These luminescence differences can be obtained under the effect of targeted exposure to a laser beam.
  • Said second material is typically a paint, a lacquer, a material having a photoluminescence higher than that of the glass-ceramic, a metal-based material and / or any other material for providing optical contrast with said glass-ceramic.
  • the metallic material constituting the second and / or third material preferably has a density greater than the density of the glass-ceramic, is chosen from the family of precious metals and / or from the family of transition metals, and / or comprises at least one element chosen from a nitride, an oxide and / or a carbide of a metallic element.
  • Said second and third materials may be the same or different.
  • the watch movement component is typically an element constituting a blank of a movement, for example a plate, a bridge or a member of a tourbillon cage. It may also be a striking hammer, an oscillating mass rotor, a display member, a cam, in particular a resetting heart, a rocker, a mobile including at least one toothed sector, for example a toothed wheel, a pivot or an exhaust member, said watch movement component being optionally perforated.
  • the openwork portion is typically a skeleton type structure.
  • the watch movement components according to the invention partially offer the properties of the nonmetallic materials mentioned above by overcoming the production difficulties of the latter. They have particular advantages of stability of the material, in particular the absence of known internal stresses in metals, a density close to that of glass, a hardness higher than that of certain metals, a resistance to wear and tribological properties higher.
  • the watch movement components according to the invention also benefit from the properties of said second and third materials other than the glass-ceramic which enter into their composition. They can typically be weighed down by combining with denser materials than glass ceramics or by modifying their optical properties locally by combining them with certain materials.
  • a watch movement component 10, 20, 30, 40, 50 according to the invention comprises a glass-ceramic comprising a crystalline phase representing at least 50% by volume of said glass-ceramic, the rest of the glass-ceramic being a vitreous matrix, said crystalline phase being at least 50% mica type.
  • the crystalline phases of the mica type are at least partly in the form of lamellae. These last ones favor the machinability of the glass-ceramic with mica structure.
  • Said glass-ceramic contains silicon dioxide and other elements, partly oxides, a non-limiting composition of the material further comprising the following elements: MgO, Al 2 O 3 , K 2 O, B 2 O 3 and F. may be completed, partially or completely replaced by other elements, chosen in particular from magnesium fluoride, strontium oxide, iron oxides, chromium or other metal elements. Certain elements such as copper or gold can advantageously modify the colors of the glass-ceramic.
  • glass-ceramics mica structure do not require sintering step or baking during their shaping to obtain the watch component according to the invention, and have the advantage of being machined without special tools.
  • a watch movement component according to the invention is produced by machining a glass-ceramic substrate with a mica structure. It is typically obtained by at least one mechanical machining step, by removal of material. Preferably, at least 50% of the machining steps of the component are machining mechanical machining steps chosen, for example, from the following conventional mechanical machining techniques: turning, milling, polishing, satin-finishing, mechanical etching, drilling or cutting.
  • a glass ceramic with a mica structure as defined above typically has a density of less than 3 g / cm 3 , which makes its advantageous use for producing mobile elements, the inertia of the components then being greatly reduced. These properties are also particularly advantageous for mobiles, subject to low torques or accelerations, or for display disks.
  • the watch movement component according to the invention is typically selected from the set of elements constituting a blank of a movement, for example a plate 20, a bridge or a member of a tourbillon cage. It may also be a striking hammer 40, an oscillating mass rotor 50, a display member 30, a cam, in particular a resetting heart, a rocker, including a mobile comprising at least one toothed sector, for example a toothed wheel 10, a pivot or an exhaust member.
  • the watch movement component according to the invention can undergo various treatments and take various forms.
  • the perforated portions can typically be indicative of a display component 30 with a skeleton effect 31, as illustrated in FIGS. figures 3a and 3g .
  • An advantage of using a glass ceramic with a mica structure compared to the metals traditionally used in watch movement components, comes from the absence or reduction of the internal stresses after machining, which makes it possible, in particular in the case highly perforated pieces such as bridges or blanks called skeletons (plate 20), to guarantee high geometries and tolerances during assemblies, overcoming the warping or other problems encountered in thin metal structures.
  • the mica-structure glass-ceramic used comprises certain compounds such as, for example, metal oxides, such as zirconium oxide and / or aluminum oxide
  • its reflectance may be modified, in particular under the effect of laser exposure or irradiation at specific frequency, duration, and wavelength pulsations.
  • it is possible to change the shade of the material usually in shades ranging from white to black, through intermediate gray, selectively and localized. This can for example be used to write indications 32 on a display component 30 as shown in FIGS. Figures 3a and 3c .
  • the mica-structure glass-ceramic of the watch movement component may comprise metal ions of one of the elements of the rare earth group, such as, for example, europium or erbium ions, of one of the elements of the group of transition metals, for example yttrium ions or one of the elements of the group of poor metals, for example bismuth ions.
  • Such ions can be introduced into the glass-ceramic by any appropriate technique, including doping or ion implantation.
  • the mica-structure glass-ceramic of the watch movement component comprises such ions, the luminescence of said glass-ceramic with a mica structure can be modified, in particular under the effect of a laser irradiation at frequency pulses, of duration and specific wavelengths.
  • Such irradiation makes it possible to obtain luminescence by excitation of photons and thus to modify the luminescence properties of the exposed zone.
  • This can for example be used to write indications 32 on a display component 30 as shown in FIGS. Figures 3a and 3c .
  • the watch movement component according to the invention advantageously comprises at least one cavity 33, 43, 53, blind or through, hollowed at least partly in the glass-ceramic.
  • a cavity 33, 43, 53 may in particular take the form of indications dug in the glass-ceramic of a display component 30 as shown in FIGS. figures 3a and 3d to 3f or of any geometrical shape in a striking hammer 40 or in a rotor of oscillating mass 50.
  • This cavity 33, 43, 53 is advantageously filled, at least in part, with a second material 34, 44, 54.
  • This second material may be a paint, a lacquer, a material having a higher photoluminescence than said glass-ceramic, a metal-based material and / or any other material for providing optical contrast with said glass-ceramic.
  • hybrid components whose structure is made of glass ceramic mica structure, so rigid and controllable hardness, comprising at least one cavity 43, 53 filled with a metal density typically higher than that of glass-ceramic mica structure, such as a precious metal, to increase the inertia.
  • Such a striking hammer 40 which is caused to shock a resonance body, has favorable properties of hardness, wear and inertia, and even interesting acoustic properties, depending on the thickness of its glass-ceramic wall with a mica structure. , because of the crystalline stamp of this material.
  • a surface coating may be made on at least a portion of the glass-ceramic surface mica structure of the watch movement component according to the invention, for example to represent indications 32 on a display component, as illustrated in FIG. figure 3b .
  • Such a surface coating may consist of a metallization of a portion of the glass-ceramic surface of the watch movement component according to the invention.
  • Said metallization can be carried out by various known methods, for example, but without being limiting, by PVD or CVD. It can be used to promote the bonding of a glass-ceramic surface with a mica structure of the watch movement component to another metallic or metallized element of the watch movement component or the movement, by soldering, soldering, pressing or by any other method performing the same function of bonding between two metallic or metallized elements.
  • the material of the surface coating is typically selected from materials comprising at least one metal element, said metal element having a density greater than the density of the glass-ceramic and / or being selected from the family of precious metals.
  • a surface coating with a metal or metalloid may typically be completed with a step leading to an oxide, nitride and / or carbide thereof. This may be of interest for example to reinforce a surface of the component subjected to high friction and / or wear stress, where the sliding must be maximized or a surface to cooperate with another surface without liquid lubrication or with conditions particular lubrication.
  • Such components may include pivots, cogs, exhaust members or any other component subject to such actions.
  • a pivot can be made monolithically in the glass-ceramic mica structure with the mobile which contains it, the surface of the pivot undergoing the efforts can then be subjected to this process reinforcing its tribological properties.
  • the watch movement components according to the invention are advantageously subjected to finish or decoration treatments including in particular steps such as chamfering or engraving.
  • the watch movement components according to the invention can also be perforated, for example in the form of skeleton-type structures, while guaranteeing high geometries and tolerances during the assemblies, freeing themselves from warping or other problems encountered in thin structures.
  • metal In addition, they may be coated with a layer of a second material, typically metal or photoluminescent for purposes such as improving tribological properties or assembly with other components or for decorative purposes.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Metallurgy (AREA)
  • Glass Compositions (AREA)
  • Laser Beam Processing (AREA)
  • Surface Treatment Of Glass (AREA)
EP17164654.0A 2016-04-01 2017-04-03 Komponente eines uhrwerks Active EP3232276B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH4312016 2016-04-01

Publications (2)

Publication Number Publication Date
EP3232276A1 true EP3232276A1 (de) 2017-10-18
EP3232276B1 EP3232276B1 (de) 2020-08-26

Family

ID=55649970

Family Applications (3)

Application Number Title Priority Date Filing Date
EP17164654.0A Active EP3232276B1 (de) 2016-04-01 2017-04-03 Komponente eines uhrwerks
EP17164653.2A Withdrawn EP3226083A1 (de) 2016-04-01 2017-04-03 Rohwerk eines uhrwerks
EP17164652.4A Active EP3226082B1 (de) 2016-04-01 2017-04-03 Komponente eines uhrwerks

Family Applications After (2)

Application Number Title Priority Date Filing Date
EP17164653.2A Withdrawn EP3226083A1 (de) 2016-04-01 2017-04-03 Rohwerk eines uhrwerks
EP17164652.4A Active EP3226082B1 (de) 2016-04-01 2017-04-03 Komponente eines uhrwerks

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EP (3) EP3232276B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109270818A (zh) * 2018-11-07 2019-01-25 精时拓飞（深圳）科技有限公司 一种微型机械的自动供能模块

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1398315A (en) * 1972-08-15 1975-06-18 Dassortiments Reunies Fab Method for manufacturing dials for watches and dials for watches manufactured according to said method
DE102006059274A1 (de) * 2006-12-13 2008-06-26 Stein, Ralf Verfahren zur Herstellung eines Bauteils für das Werk einer mechanischen Uhr
WO2016033253A1 (en) * 2014-08-27 2016-03-03 Apple Inc. Sapphire cover for electronic devices

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1398315A (en) * 1972-08-15 1975-06-18 Dassortiments Reunies Fab Method for manufacturing dials for watches and dials for watches manufactured according to said method
DE102006059274A1 (de) * 2006-12-13 2008-06-26 Stein, Ralf Verfahren zur Herstellung eines Bauteils für das Werk einer mechanischen Uhr
WO2016033253A1 (en) * 2014-08-27 2016-03-03 Apple Inc. Sapphire cover for electronic devices

Also Published As

Publication number Publication date
EP3226083A1 (de) 2017-10-04
EP3226082A1 (de) 2017-10-04
EP3232276B1 (de) 2020-08-26
EP3226082B1 (de) 2020-02-26

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