EP4290314A1 - Rad für ein hemmungssystem mit reduzierter trägheit - Google Patents

Rad für ein hemmungssystem mit reduzierter trägheit Download PDF

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Publication number
EP4290314A1
EP4290314A1 EP22177838.4A EP22177838A EP4290314A1 EP 4290314 A1 EP4290314 A1 EP 4290314A1 EP 22177838 A EP22177838 A EP 22177838A EP 4290314 A1 EP4290314 A1 EP 4290314A1
Authority
EP
European Patent Office
Prior art keywords
wheel
exhaust system
rim
recess
arms
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
EP22177838.4A
Other languages
English (en)
French (fr)
Other versions
EP4290314B1 (de
Inventor
Laurent Jeanneret
Stéphane Renard
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 EP22177838.4A priority Critical patent/EP4290314B1/de
Priority to US18/175,861 priority patent/US12461489B2/en
Priority to JP2023035214A priority patent/JP7519488B2/ja
Priority to CN202310303776.XA priority patent/CN117192928A/zh
Publication of EP4290314A1 publication Critical patent/EP4290314A1/de
Application granted granted Critical
Publication of EP4290314B1 publication Critical patent/EP4290314B1/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
    • G04B13/00—Gearwork
    • G04B13/02—Wheels; Pinions; Spindles; Pivots
    • G04B13/027—Wheels; Pinions; Spindles; Pivots planar toothing: shape and design
    • 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

Definitions

  • the invention relates to the field of watchmaking, and in particular mechanical watch movements.
  • the invention relates to a wheel for an exhaust system for a timepiece.
  • An escape wheel is well known in the field of watchmaking and is intended to be connected to a mainspring which supplies it with energy in order to maintain the oscillations of a balance wheel, possibly by means of an anchor .
  • the escape wheel comprises teeth distributed around the periphery of a rim connected to a hub by radial branches.
  • the anchor has pallets intended to cooperate with the teeth of the escape wheel.
  • the escape wheel follows the following cycle: it is released from its stopping position against the first lift, then it is accelerated and driven by the gear train in order to first catch the anchor then indirectly the pendulum through the latter. It drives the pendulum before ejecting it, and finally it ends its course by coming up against the second lifting of the anchor.
  • the main aim of the present invention is to provide a wheel for an exhaust system having reduced inertia compared to the wheels currently used while remaining easy and quick to manufacture.
  • the invention relates to a wheel for an exhaust system comprising a hub intended to be mounted integrally in rotation with an axis, the axis being intended to be subjected to a mechanical torque, a rim, at least two arms extending from the hub to the rim, and teeth formed by a plurality of teeth, characterized in that said wheel for the exhaust system comprises at least one recess on at least one of its faces, the recess extending from the serge to the hub.
  • the invention also relates to an exhaust system comprising a wheel according to the invention.
  • the invention also relates to a watch movement comprising such an escapement system or a wheel for an escapement system according to the invention.
  • the invention relates to a wheel for an exhaust system, such a wheel is, for example, an escape wheel, an intermediate wheel or even a seconds wheel.
  • a wheel for an exhaust system such a wheel is, for example, an escape wheel, an intermediate wheel or even a seconds wheel.
  • the escape wheel is chosen as an example of description to facilitate reading of the invention. It is obvious that a person skilled in the art would have no difficulty in making an intermediate wheel or a seconds wheel in a similar manner.
  • FIG. 1 illustrates an escape wheel 1 according to the present invention, conventionally comprising a hub 2 connected to a rim 3 by radial arms 4, and teeth 5 distributed regularly around the periphery of the rim 3 and extending along orthoradial directions relative to an axis of rotation of the escape wheel 1.
  • the escape wheel 1 comprises at least two arms 4, and preferably four arms 4. Obviously other configurations can be considered, such as a wheel three-link exhaust 4.
  • the escape wheel 1 is made of a material chosen from steel, silicon or a metal alloy, or any other conventional material known to those skilled in the art for making components for timepieces.
  • a plane P is defined which is perpendicular to the axis of rotation of said escape wheel 1 and at mid-thickness of the escape wheel.
  • the term “thickness” used in the rest of the text refers to a dimension considered in a direction parallel to the axis of rotation of the escape wheel 1.
  • each of the teeth 14 has an end with at least one bevel.
  • the escape wheel 1 comprises at least one recess 10 formed on at least one of its faces, namely the front face and/or the rear face, the recess 10 extending from the rim 3 to to the hub 2.
  • the hub 2 can be of a thickness identical to that of the rim 3 so that the wheel 1 is more solid at the level of the hub and avoid deformation during of its installation on an axis.
  • sinking we mean a recess, for example of circular shape, made in the board of wheel 1.
  • front face and rear face we mean the faces visible from above and below the escape wheel 1.
  • the escape wheel has a thickness which is at least 0.10mm and the groove(s) 10 have a height of between 0.02mm and 0.05mm.
  • the thickness of the escape wheel 1 at the level of the recess 10 is typically between 0.05mm and 0.10mm.
  • the at least one groove 10 extends partly over the serge 3 and forms a border 6 at the edge of the serge of at least 0.02mm.
  • the serge 3 retains a portion of its thickness at the periphery of the escape wheel, which preserves its rigidity.
  • the escape wheel 1 comprises a recess 10 on each of its faces, namely the front face and the rear face.
  • the grooves 10 can be provided symmetrical with respect to the horizontal plane P in which the escape wheel 1 is inscribed and which is formed by the arms 4 and the rim 3 of the escape wheel 1.
  • symmetrical we mean that each groove has an identical diameter and height on each face of the escape wheel.
  • the two cores 10 can have a diameter of 3.3mm and a height of 0.04mm.
  • the grooves 10 can be provided asymmetrically with respect to the horizontal plane P in which the escape wheel 1 is inscribed and which is formed by the arms 4 and the rim 3 of the wheel d escapement 1.
  • asymmetrical we mean that each groove has a different height on each face of the escape wheel but an identical diameter.
  • the two sinks 10 can have an identical diameter and each have a height of 0.02mm and 0.05mm.
  • the grooves 10 can obviously be considered according to the needs of those skilled in the art without having to make any particular efforts for the production of the escape wheel 1.
  • the front or rear face can have several drowning, such as drowning through inter-arm space.
  • the at least one recess 10 of the escape wheel 1 can be produced by means of methods well known to those skilled in the art, for example by milling, turning, sinking, laser machining, DRIE or even LIGA depending on the material chosen. for the manufacture of wheel 1.
  • the invention also relates to an exhaust system comprising a wheel 1 according to the invention.
  • the wheel of the exhaust system is an escape wheel, an intermediate wheel or a second wheel.
  • the invention also relates to a watch movement comprising an escapement system or a wheel according to the invention.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Gears, Cams (AREA)
  • Electromechanical Clocks (AREA)
EP22177838.4A 2022-06-08 2022-06-08 Rad für ein hemmungssystem mit reduzierter trägheit Active EP4290314B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP22177838.4A EP4290314B1 (de) 2022-06-08 2022-06-08 Rad für ein hemmungssystem mit reduzierter trägheit
US18/175,861 US12461489B2 (en) 2022-06-08 2023-02-28 Wheel for a reduced-inertia escapement system
JP2023035214A JP7519488B2 (ja) 2022-06-08 2023-03-08 慣性が低減されたエスケープシステムのための車
CN202310303776.XA CN117192928A (zh) 2022-06-08 2023-03-27 用于惯性减小的擒纵系统的轮

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22177838.4A EP4290314B1 (de) 2022-06-08 2022-06-08 Rad für ein hemmungssystem mit reduzierter trägheit

Publications (2)

Publication Number Publication Date
EP4290314A1 true EP4290314A1 (de) 2023-12-13
EP4290314B1 EP4290314B1 (de) 2025-12-17

Family

ID=81984839

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22177838.4A Active EP4290314B1 (de) 2022-06-08 2022-06-08 Rad für ein hemmungssystem mit reduzierter trägheit

Country Status (4)

Country Link
US (1) US12461489B2 (de)
EP (1) EP4290314B1 (de)
JP (1) JP7519488B2 (de)
CN (1) CN117192928A (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA242967S (fr) 2024-11-07 2026-03-18 Rolex Sa Roue d'échappement

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB352876A (en) * 1930-01-10 1931-07-16 Hasler Ag Escapement mechanism for clocks, speedometers and the like
US2363993A (en) * 1940-12-12 1944-11-28 Rhodes Inc M H Escapement
DE1981274U (de) * 1967-06-06 1968-03-14 Junghans Gmbh Geb Kolbenzahn-ankergang fuer uhrwerke.
US3853714A (en) * 1971-06-15 1974-12-10 Seiko Instr & Electronics Process for electroforming microparts having hollow interiors
CH708827A2 (fr) * 2013-11-08 2015-05-15 Nivarox Sa Pièce de micromécanique creuse, à plusieurs niveaux fonctionnels et monobloc en un matériau à base d'un allotrope synthétique du carbone.

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI461865B (zh) * 2006-06-23 2014-11-21 Omega Sa 用於機械式時計機心之擺輪游絲調節系統及具有此系統之時計
JP5389455B2 (ja) * 2008-02-21 2014-01-15 セイコーインスツル株式会社 摺動部品及び時計
JP5424328B2 (ja) * 2009-01-21 2014-02-26 セイコーインスツル株式会社 機械部品、及び時計
CH700640B1 (fr) * 2009-03-19 2014-09-30 Mhvj Manufacture Horlogère Vallée De Joux Pièce d'horlogerie allegée et renforcée.
CH702799B1 (fr) * 2010-03-04 2012-12-31 Montres Breguet Sa Pièce d'horlogerie comportant un mouvement mécanique à haute fréquence.
CH708043B1 (fr) * 2013-05-08 2018-02-15 Mft Et Fabrique De Montres Et Chronometres Ulysse Nardin Le Locle S A Roue d'échappement.
EP3321747B1 (de) * 2015-08-25 2020-09-30 Citizen Watch Co., Ltd. Ankerhemmung
EP3557334A1 (de) * 2018-04-17 2019-10-23 Dominique Renaud SA Uhrhemmungsmechanismus mit ruheanker, und uhr, die mit einem solchen hemmungsmechanismus ausgestattet ist
DE102018212113A1 (de) * 2018-07-20 2020-01-23 Creaditive Ag Hemmungssystem und das Hemmungssystem umfassendes Messgerät
EP3907566B1 (de) * 2020-05-05 2025-07-16 Montres Breguet S.A. Chronometerhemmung für uhren

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB352876A (en) * 1930-01-10 1931-07-16 Hasler Ag Escapement mechanism for clocks, speedometers and the like
US2363993A (en) * 1940-12-12 1944-11-28 Rhodes Inc M H Escapement
DE1981274U (de) * 1967-06-06 1968-03-14 Junghans Gmbh Geb Kolbenzahn-ankergang fuer uhrwerke.
US3853714A (en) * 1971-06-15 1974-12-10 Seiko Instr & Electronics Process for electroforming microparts having hollow interiors
CH708827A2 (fr) * 2013-11-08 2015-05-15 Nivarox Sa Pièce de micromécanique creuse, à plusieurs niveaux fonctionnels et monobloc en un matériau à base d'un allotrope synthétique du carbone.

Also Published As

Publication number Publication date
CN117192928A (zh) 2023-12-08
EP4290314B1 (de) 2025-12-17
US12461489B2 (en) 2025-11-04
JP2023180206A (ja) 2023-12-20
US20230400812A1 (en) 2023-12-14
JP7519488B2 (ja) 2024-07-19

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