EP3907564A1 - Indexierungselement für uhren - Google Patents

Indexierungselement für uhren Download PDF

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Publication number
EP3907564A1
EP3907564A1 EP20172880.5A EP20172880A EP3907564A1 EP 3907564 A1 EP3907564 A1 EP 3907564A1 EP 20172880 A EP20172880 A EP 20172880A EP 3907564 A1 EP3907564 A1 EP 3907564A1
Authority
EP
European Patent Office
Prior art keywords
indexing
component
indexing element
relief
bearing surface
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
EP20172880.5A
Other languages
English (en)
French (fr)
Inventor
M. Julien SAGLINI
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.)
ETA SA Manufacture Horlogere Suisse
Original Assignee
ETA SA Manufacture Horlogere Suisse
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 ETA SA Manufacture Horlogere Suisse filed Critical ETA SA Manufacture Horlogere Suisse
Priority to EP20172880.5A priority Critical patent/EP3907564A1/de
Priority to US17/225,213 priority patent/US11914327B2/en
Priority to JP2021071576A priority patent/JP7196223B2/ja
Priority to CN202110499373.8A priority patent/CN113608423B/zh
Priority to KR1020210055853A priority patent/KR102602824B1/ko
Publication of EP3907564A1 publication Critical patent/EP3907564A1/de
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
    • G04B13/00—Gearwork
    • G04B13/02—Wheels; Pinions; Spindles; Pivots
    • G04B13/021—Wheels; Pinions; Spindles; Pivots elastic fitting with a spindle, axis or shaft
    • 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
    • G04B11/00—Click devices; Stop clicks; Clutches
    • G04B11/001—Clutch mechanism between two rotating members with transfer of movement in both directions, possibly with limitation on the transfer of power
    • G04B11/003—Clutch mechanism between two rotating members with transfer of movement in both directions, possibly with limitation on the transfer of power with friction member, e.g. with spring action
    • 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
    • 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
    • G04B11/00—Click devices; Stop clicks; Clutches
    • G04B11/02—Devices allowing the motion of a rotatable part in only one direction
    • G04B11/04—Pawl constructions therefor, e.g. pawl secured to an oscillating member actuating a ratchet
    • 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
    • G04B13/021—Wheels; Pinions; Spindles; Pivots elastic fitting with a spindle, axis or shaft
    • G04B13/023—Wheels; Pinions; Spindles; Pivots elastic fitting with a spindle, axis or shaft allowing rotational slipping when a threshold torque is exceeded
    • 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
    • G04B31/02—Shock-damping bearings
    • 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
    • G04B43/00—Protecting clockworks by shields or other means against external influences, e.g. magnetic fields
    • G04B43/002—Component shock protection arrangements

Definitions

  • the invention relates to a timepiece indexing element, arranged to cooperate in a substantially coaxial manner, around an axis around which said indexing element extends, with a timepiece component comprising an indexing relief defining a plurality of indexing positions, said indexing element comprising a first bearing surface arranged to cooperate in abutment bearing with a second complementary bearing surface that a said component comprises, and comprising elastic return means arranged to exerting a thrust force that is substantially radial with respect to said axis on a said component in order to press it against said first bearing surface, and comprising indexing means arranged to cooperate with a said indexing relief of a said component for relative indexing between said indexing element and said component.
  • the invention also relates to a timepiece assembly comprising at least one such indexing element, and at least one such timepiece component comprising an indexing relief defining a plurality of indexing positions, said at least one indexing element. and said at least one component being arranged to cooperate with one another in a substantially coaxial manner, around said axis, for their relative indexing with respect to one another.
  • the invention also relates to a timepiece mechanism comprising at least one such indexing element, and / or such a timepiece assembly.
  • the invention also relates to a timepiece, in particular a watch, comprising at least one such timepiece mechanism and / or at least one such indexing element, and / or such a timepiece assembly.
  • the invention also relates to the field of clockwork mechanisms, and in particular display, and / or adjustment, and / or selection mechanisms.
  • time zone / jumping hour wheels consist of several boards / pinions, linked together by a star / cam constrained by a spring element (pawl).
  • pawl spring element
  • the invention proposes both to make the adjustment and indexing mechanisms more reliable, to reduce their thickness, and to guarantee precise and controlled indexing between two elements.
  • the invention relates to a timepiece indexing element, according to claim 1.
  • the invention also relates to a timepiece assembly comprising at least one such indexing element, and at least one such timepiece component comprising an indexing relief defining a plurality of indexing positions, said at least one indexing element. and said at least one component being arranged to cooperate with one another in a substantially coaxial manner, for their relative indexing with respect to one another.
  • the invention also relates to a timepiece mechanism comprising at least one such indexing element, and / or such a timepiece assembly.
  • the invention also relates to a timepiece, in particular a watch, comprising at least one such timepiece mechanism and / or at least one such indexing element, and / or such a timepiece assembly.
  • the invention relates to a timepiece indexing element 10, arranged to cooperate in a substantially coaxial manner, around an axis D around which this indexing element 10 extends, with a timepiece component 20:
  • This component 20 comprises an indexing relief 30, defining a plurality of indexing positions.
  • This indexing relief can be formed by a toothing as illustrated by the figures, or by a groove, or by notches, or protrusions, or pins, or the like.
  • the indexing element 10 comprises a first bearing surface 11, which is arranged to cooperate, at least in the shock configuration, in abutment and / or guide bearing with a second complementary bearing surface 21 which a such component 20.
  • first bearing surface 11 which is arranged to cooperate, at least in the shock configuration, in abutment and / or guide bearing with a second complementary bearing surface 21 which a such component 20.
  • second complementary bearing surface 21 which a such component 20.
  • this zone of contact between the indexing element 10 and the component 20 ensures the perfect positioning of one relative to the other: their position is both known and controlled.
  • each first bearing surface 11 in normal operation, in the service position, is at a distance from a second complementary bearing surface 21, with a non-zero clearance, of a few micrometers or tens of micrometers. In the event of an impact, the first bearing surface 11 performs both a stop function and a guiding function of the component 20.
  • the indexing element 10 comprises elastic return means, marked 12 on the figures 1 to 6 , which are arranged to exert a thrust force that is substantially radial, with respect to the axis D, on such a component 20, to press it against a contact surface, or on the support surface 11.
  • the indexing element 10 comprises indexing means 13, which are arranged to cooperate with an indexing relief 30 of a component 20 for relative indexing between the indexing element 10 and this component 20.
  • indexing means 13 are in particular teeth, lugs, or the like.
  • the elastic return means 12 comprise at least a first elastic arm 14, comprising a first indexing surface 15 which the indexing means 13 comprise. And this first elastic arm 14 is arranged to exert a thrust force that is substantially radial with respect to the axis D on such a component 20.
  • the elastic return means 12 further comprise at least one second elastic arm 16, which is arranged to exert a thrust force that is substantially radial with respect to the axis D on at least one first elastic arm 14. More particularly, in a pair formed by a first elastic arm 14 and a second elastic arm 16, the second elastic arm 16 is arranged to exert a return torque greater than the return torque of the first elastic arm 14. More particularly, in a pair formed by a first arm elastic 14 and a second elastic arm 16, the second elastic arm 16 is arranged to travel, in its bending stroke, a radial extension (or deflection) less than that of the first elastic arm 14.
  • the first inner elastic arm 14 has an arrow of 0.26 mm, while that of the second elastic arm 16 is 0.21 mm.
  • the indexing element 10 comprises a plurality of pairs (two pairs in the non-limiting case of the figures), each constituted by a first elastic arm 14 and a second elastic arm 16, and each arranged to exert on a component 20 a force substantially diametrically opposed, with respect to the axis D, to the first bearing surface 11.
  • At least one second elastic arm 16 comprises a lug 17 which is arranged to cooperate with a notch 18 which a first arm comprises elastic 14 with which this second elastic arm 16 cooperates, for locking in the indexing position of this first elastic arm 14, in the factory or in an after-sales service; to be implemented by a user, such a variant requires the arrangement of additional means, not illustrated here, to release the lug 17 from the notch 18.
  • the indexing element 10 comprises at least one locking element.
  • the blocking 19 which is arranged to block a second elastic arm 16 resting on a first elastic arm 14 with which this second elastic arm 16 cooperates; this blocking can be a blocking with a slight play, to allow a small radial travel of the first elastic arm 14 and of the second elastic arm 16 in the event of impact, when the mechanism is incorporated into a watch ; here again, such a blockage relates to a factory setting or in an after-sales service.
  • the first elastic arm 14 and the second elastic arm 16 are substantially parallel to one another.
  • the first elastic arms 14 and second elastic arms 16 are curved, in particular substantially circular and centered on the axis D, for a good distribution of the stresses.
  • the indexing element 10 comprises an internal chamber 111, delimited by the bearing surface 11 and each first elastic arm 14, and which is arranged to surround an indexing relief 30 of a component 20, and each first elastic arm 14 is closer to the axis D than each second elastic arm 16.
  • the indexing element 10 is arranged to be inserted into an external chamber delimited by an indexing relief 30 of a component 20, and each first elastic arm 14 is further from the axis D than each second elastic arm 16.
  • the indexing element 10 comprises at least one boss 110 diametrically opposed, with respect to the axis D, to the first bearing surface 11, to constitute an anti-shock stop limiting the relative radial movement, in the event of shock, between the indexing element 10 and a component 20 assembled together in an indexed position.
  • the figure 8 illustrates a mechanism according to the invention, arranged to ensure proper operation, with maintenance of the geometry, even in the event of an impact.
  • the invention relates to a timepiece indexing element 10, arranged to cooperate in a substantially coaxial manner, around an axis D around which this indexing element 10 extends, with a timepiece component 20 comprising a indexing relief 30.
  • the indexing element 10 comprises indexing means 13, which are arranged to cooperate with such an indexing relief 30 of a component 20, for relative indexing between this indexing element. 10 and this component 20 from among a plurality of relative indexing positions.
  • these indexing means 13 are carried by a plurality of first elastic arms 14 each comprising a first indexing surface 15, each first elastic arm 14 being arranged to exert a thrust force that is substantially radial with respect to the 'axis D on this component 20.
  • the indexing element 10 comprises at least a first bearing surface 11, which is arranged to, in the free state in a service position, remain at a distance from a second complementary bearing surface 21 that comprises a component 20, and in the event of an impact, cooperate in abutment and / or guide bearing with the second complementary bearing surface 21.
  • each first bearing surface 11 and each second complementary bearing surface 21 is strictly positive, that is to say not zero.
  • each first bearing surface 11 is carried by a second arm 40 cantilevered inside the indexing element 10.
  • at least one second arm 40, and more particularly each second arm 40 is elastic.
  • the indexing element 10 comprises a plurality of first bearing surfaces 11, which are arranged to surround a component 20 and keep it substantially coaxial with the indexing element 10 in the event of an impact.
  • each first bearing surface 11 is arranged to cooperate simultaneously with several protruding reliefs 31, in particular teeth, which the indexing relief 30 of component 20 comprises.
  • each second arm 40 comprises a first external limiting surface 41, which is arranged to limit the centripetal travel of a first elastic arm 14 or to move a first elastic arm 14 away from the axis D during an impact.
  • the indexing element 10 comprises an alternation of second arms 40 and first elastic arms 14, all projecting internally from a substantially annular structure, towards the axis D.
  • each first elastic arm 14 comprises a housing 150 or a protuberance for its operation by a concentric clamping tool for its bringing into cooperation with an indexing relief 30 of a component 20, or for its removal.
  • each second arm 40 comprises a second internal limiting surface 42, which is arranged to limit the centrifugal stroke of a first elastic arm 14.
  • the invention can be used indifferently with the movable indexing element 10 and the fixed component 20, or the fixed indexing element 10 and the movable component 20, or the indexing element 10 and the component 20 both movable, or even the indexing element 10 and the component 20 both fixed for a factory setting for example.
  • the indexing element 10 is a mobile arranged to pivot around the axis D and around a component 20 with which it cooperates.
  • the indexing element 10 comprises drive means 120, such as teeth, grooves, notches, bores, projections, pins, pins, belt or chain groove, or the like.
  • the indexing element 10 is designed to be fixed in a fixed angular position on a structure of a movement or of a clockwork mechanism.
  • the indexing element 10 is made of a micro-machinable material, which can be produced by a process of the “LIGA” type (from the German “Rôntgenlithographie, Galvanoformung, Abformung”: lithography, galvanization, forming) or similar, in silicon , or silicon oxide, or nickel-phosphorus NiP, or any similar material now in common use in watchmaking and suitable for making thin monobloc components comprising elastic blades.
  • the invention lends itself particularly well to the production of components for watches, of small dimensions, for example with an overall diameter of less than 5 mm, and a thickness of a few tenths of a millimeter.
  • the invention also relates to a timepiece assembly 100 comprising at least one such indexing element 10, and at least one such timepiece component 20 comprising an indexing relief 30 defining a plurality of indexing positions.
  • This at least one indexing element 10 and this at least one component 20 are arranged to cooperate with each other in a substantially coaxial manner, around the axis D, for their relative indexing with respect to one another. 'other, with the first bearing surface 11 arranged to cooperate in abutment bearing with a second complementary bearing surface 21 which this at least one component 20 comprises, and the indexing means 13 arranged to cooperate with a relief d indexing 30 of such a component 20 for relative indexing between the indexing element 10 and the component 20 concerned.
  • the indexing element 10 comprises an internal chamber 111, delimited by the bearing surface 11 and each first arm elastic 14, arranged to surround an indexing relief 30 of a component 20, and each first elastic arm 14 is closer to the axis D than each second elastic arm 16.
  • the indexing element 10 is arranged to be inserted into an external chamber delimited by an indexing relief 30 of a component 20, and each first elastic arm 14 is further from the axis D than each second elastic arm 16.
  • the watch assembly 100 comprises a single indexing element 10, and a single component 20.
  • component 20 is a mobile.
  • the component 20 is designed to be fixed in a fixed angular position on a structure of a movement or of a clockwork mechanism.
  • the indexing element 10 and the indexing relief 30 of the component 20 are both delimited by the same upper plane and the same lower plane, perpendicular to the axis D. More particularly still, they have the same thickness.
  • the invention also relates to a timepiece mechanism 500 comprising at least one such indexing element 10, and / or such a timepiece assembly 100.
  • the invention also relates to a timepiece 1000, in particular a watch, comprising at least one such timepiece mechanism 500, and / or at least one indexing element 10, and / or a timepiece assembly 100.
  • the invention while ensuring the disengagement of the two indexed elements, makes it possible to gain a level in Z, that is, ie to reduce the total thickness.
  • one of the elastic arms provides positioning and indexing, and part of the support torque, and the other spring provides most of the resulting support torque.
  • indexing element 10 and a component 20 which are both toothed wheels
  • the invention lends itself to numerous horological applications: column wheel, date ring, date indicator. time zone, toggle, display disc, day / night indicator, AM / PM indicator, leap year display, moon phase, or other.
  • the invention makes it possible to obtain an appreciable gain in terms of bulk, in particular in thickness, to minimize the risk of breakage of the spring elements, and to ensure better control of the forces.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Micromachines (AREA)
  • Electromechanical Clocks (AREA)
EP20172880.5A 2020-05-05 2020-05-05 Indexierungselement für uhren Pending EP3907564A1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP20172880.5A EP3907564A1 (de) 2020-05-05 2020-05-05 Indexierungselement für uhren
US17/225,213 US11914327B2 (en) 2020-05-05 2021-04-08 Timepiece indexing element
JP2021071576A JP7196223B2 (ja) 2020-05-05 2021-04-21 計時器のインデックス要素
CN202110499373.8A CN113608423B (zh) 2020-05-05 2021-04-28 钟表分度元件
KR1020210055853A KR102602824B1 (ko) 2020-05-05 2021-04-29 타임피스 인덱싱 요소

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20172880.5A EP3907564A1 (de) 2020-05-05 2020-05-05 Indexierungselement für uhren

Publications (1)

Publication Number Publication Date
EP3907564A1 true EP3907564A1 (de) 2021-11-10

Family

ID=70553835

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20172880.5A Pending EP3907564A1 (de) 2020-05-05 2020-05-05 Indexierungselement für uhren

Country Status (5)

Country Link
US (1) US11914327B2 (de)
EP (1) EP3907564A1 (de)
JP (1) JP7196223B2 (de)
KR (1) KR102602824B1 (de)
CN (1) CN113608423B (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3705949A1 (de) * 2019-03-05 2020-09-09 ETA SA Manufacture Horlogère Suisse Drehmomentbegrenzungsmechanismus eines uhrwerks

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5770176U (de) * 1980-10-16 1982-04-27
JPH0640890U (ja) * 1992-05-12 1994-05-31 シチズン時計株式会社 時計用インデックス車

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5612883U (de) 1979-07-10 1981-02-03
CH693971A5 (fr) * 2000-12-07 2004-05-14 Ebauchesfabrik Eta Ag Dispositif de transmission antichoc pour l'entra¾nement d'une génératrice par une masse oscillante, notamment dans une montre.
EP1411400B1 (de) * 2002-10-16 2010-01-06 ETA SA Manufacture Horlogère Suisse Befestigungsvorrichtung für ein Koaxialdrehteil in einer Uhr, insbesondere einer Datumanzeigescheibe
EP1826634A1 (de) * 2006-02-28 2007-08-29 Nivarox-FAR S.A. Mikromechanisches Bauteil mit formschlüssiger Öffnung zum Assemblieren einer Welle
CH701075B1 (fr) * 2007-03-02 2010-11-30 Richemont Int Sa Ensemble formé d'une roue et de son axe et roue pour un tel ensemble.
JP5612883B2 (ja) 2009-03-31 2014-10-22 住友化学株式会社 化学増幅型フォトレジスト組成物
JP5414634B2 (ja) * 2010-07-30 2014-02-12 セイコーインスツル株式会社 手巻き輪列及び該輪列を備えた時計用ムーブメント、並びに該ムーブメントを備えた時計
CH705322A2 (fr) 2011-07-28 2013-01-31 Celsius X Vi Ii Mobile d'embrayage.
CH709792A2 (fr) * 2014-06-18 2015-12-31 Eta Sa Manufacture Horlogère Suisse Mobile d'horlogerie.
CN104102117B (zh) * 2014-07-22 2017-02-08 福州小神龙表业技术研发有限公司 一种钟表机芯
EP2977829B1 (de) * 2014-07-24 2017-07-12 ETA SA Manufacture Horlogère Suisse Anordnung mit beweglichem Bremselement einer Uhr
EP3206089B1 (de) * 2016-02-10 2018-12-19 The Swatch Group Research and Development Ltd. Resonatormechanismus eines uhrwerks
EP3208666B1 (de) 2016-02-19 2018-11-21 Blancpain SA Uhrenrad mit spielnachstellung
EP3252546B1 (de) * 2016-06-03 2019-08-28 The Swatch Group Research and Development Ltd Uhrenmechanismus zum einstellen der unruhträgheit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5770176U (de) * 1980-10-16 1982-04-27
JPH0640890U (ja) * 1992-05-12 1994-05-31 シチズン時計株式会社 時計用インデックス車

Also Published As

Publication number Publication date
CN113608423B (zh) 2022-12-13
US20210349423A1 (en) 2021-11-11
CN113608423A (zh) 2021-11-05
KR20210135931A (ko) 2021-11-16
US11914327B2 (en) 2024-02-27
JP7196223B2 (ja) 2022-12-26
JP2021177173A (ja) 2021-11-11
KR102602824B1 (ko) 2023-11-15

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