EP4194964A1 - Unruh mit trägheitsregulierung - Google Patents

Unruh mit trägheitsregulierung Download PDF

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Publication number
EP4194964A1
EP4194964A1 EP21213656.8A EP21213656A EP4194964A1 EP 4194964 A1 EP4194964 A1 EP 4194964A1 EP 21213656 A EP21213656 A EP 21213656A EP 4194964 A1 EP4194964 A1 EP 4194964A1
Authority
EP
European Patent Office
Prior art keywords
pair
balance
flyweights
weights
hub
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
EP21213656.8A
Other languages
English (en)
French (fr)
Inventor
Laurent Jeanneret
Emmanuel Graf
Marco Verardo
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 EP21213656.8A priority Critical patent/EP4194964A1/de
Priority to US17/815,392 priority patent/US20230185241A1/en
Priority to JP2022132985A priority patent/JP2023086663A/ja
Priority to CN202211074838.6A priority patent/CN116256960A/zh
Publication of EP4194964A1 publication Critical patent/EP4194964A1/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
    • 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
    • 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
    • G04B18/00—Mechanisms for setting frequency
    • G04B18/006—Mechanisms for setting frequency by adjusting the devices fixed on the balance

Definitions

  • the invention relates to a balance with inertia adjustment having inertia adjustment means.
  • the invention also relates to a timepiece movement comprising such a system as well as a timepiece equipped with such a movement.
  • a balance wheel is known whose moment of inertia is adjustable by means of adjustment screws which are arranged at its periphery.
  • This type of device is known in particular within mechanical oscillators whose base frequency of the oscillator is adjusted by the moment of inertia of the balance wheel.
  • a pendulum comprises a rim, arms and a certain arrangement of screws or flyweights fixed to the rim or the arm of the pendulum which make it possible, by adjusting their positions, to modify the moment of inertia of the pendulum.
  • These screws or weights are positioned using keys or screwdrivers which allow their position to be adjusted.
  • the object of the invention is in particular to overcome the various drawbacks of these known techniques.
  • an object of the invention is to provide a balance wheel with inertia adjustment allowing easy and rapid adjustment.
  • the invention also aims, at least in one particular embodiment, to provide a balance with inertia adjustment which is simple to implement and inexpensive to produce.
  • a balance wheel for a clockwork movement comprising rigid parts constituted by a hub defining the pivot axis of said balance wheel, a rim, four arms connecting said rim to the hub, and comprising four slots for receiving and pinching a flyweight in position, each slot being delimited on the one hand by an arm, and on the other hand by an elastic arm comprising a first end secured to said arm, and a second distal end free with respect to said hub, said arm, and said serge sector.
  • the balance comprises two pairs of weights, each pair of weights having different masses to ensure different regulating powers, a first pair of flyweights allowing coarse adjustment, and a second pair of flyweights allowing fine adjustment.
  • the invention also relates to a timepiece movement comprising a balance according to the invention.
  • the invention also relates to a timepiece comprising a timepiece movement in accordance with the invention.
  • the pendulum 1 for a clock movement provided with a device for adjusting its inertia making it possible to adjust the frequency of oscillation of said pendulum, comprises rigid parts constituted by a hub 2 defining the pivot axis A of the pendulum 1, a rim 3 of circular shape, four arms 4 connecting said rim 3 to the hub 2, and comprising four slots 7 for receiving and clamping in position a flyweight 6,6'.
  • Each slot 7 is delimited on the one hand by an arm 4, and on the other hand by an elastic arm 5 comprising a first end 5B secured to said arm 4, and a second distal end 5A free with respect to said hub 2, to said arm 4 , and said sector of serge 3.
  • the balance 1 comprises four arms, forming a hub 4 at their intersection, the hub 4 being provided with an orifice 40 intended to receive a balance shaft.
  • Slot 7 is delimited by a rigid part of arm 4 and by an elastic arm 5 which is permanently biased towards arm 4 when the flyweight is inserted into slot 7.
  • the balance comprises two pairs of flyweights 6, 6', each pair of flyweights having different dimensions to ensure different regulating powers, a first pair of flyweights 6 allowing coarse adjustment, and a second pair of flyweights 6 'allowing fine tuning.
  • the flyweights 6, 6' of each pair are arranged in slots 7 facing each other with respect to the pivot axis A of the balance, or still arranged according to an axial symmetry of axis A, for a balanced distribution of the masses on the balance wheel 1.
  • the flyweights 6 of the first pair are larger than the flyweights 6' of the second pair, or vice versa.
  • the flyweights 6 of the first pair and the flyweights 6' of the second pair are arranged on a separate radius of the balance wheel.
  • the weights 6 of the first pair are arranged on a first radius close to the rim 3 and the weights 6' of the second pair are arranged on a second radius close to the hub 2 of the balance wheel, the pair of weights 6' near the hub 2 of the balance allowing fine adjustment.
  • the flyweights 6 of the first pair are heavier than the flyweights 6' of the second pair, or vice versa.
  • different materials can be used to make the flyweights 6,6'.
  • the weights 6 are made of gold or a gold alloy such as 18K 3N gold, and the weights 6' are made of titanium or a titanium alloy such as grade 5 titanium.
  • the flyweights 6,6' comprise a head 61 in the form of a disc and optionally a foot 62 of cylindrical shape.
  • slot 7 has a shape complementary to that of head 61 or foot 62 of flyweight 6, 6'.
  • This embodiment is particularly advantageous because it makes it possible to limit the thickness of the balance 1 once the flyweights 6,6' have been mounted on the balance 1.
  • flyweights 6,6' When the flyweights 6,6' are placed in the slots 7, the flyweights 6,6' are pinched in the slots 7 and are held by friction in their position under the effect of the elasticity of the elastic arm 5.
  • each flyweight 6,6' has a flat 64 on the disk forming the head 61.
  • Such a configuration therefore allows simple and rapid adjustment of the balance, the larger and/or heavier weights initially allowing coarse adjustment to be made, and the smaller and/or lighter weights subsequently allowing fine-tune the setting.
  • the invention also relates to a timepiece movement and a timepiece equipped with a balance according to the invention.
  • a compact balance wheel is available which makes it possible to adjust the position of the flyweights easily and inexpensively to manufacture.
EP21213656.8A 2021-12-10 2021-12-10 Unruh mit trägheitsregulierung Pending EP4194964A1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP21213656.8A EP4194964A1 (de) 2021-12-10 2021-12-10 Unruh mit trägheitsregulierung
US17/815,392 US20230185241A1 (en) 2021-12-10 2022-07-27 Balance with inertia adjustment
JP2022132985A JP2023086663A (ja) 2021-12-10 2022-08-24 慣性調整機能があるバランス
CN202211074838.6A CN116256960A (zh) 2021-12-10 2022-09-02 具有惯性调节的摆轮

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21213656.8A EP4194964A1 (de) 2021-12-10 2021-12-10 Unruh mit trägheitsregulierung

Publications (1)

Publication Number Publication Date
EP4194964A1 true EP4194964A1 (de) 2023-06-14

Family

ID=78829756

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21213656.8A Pending EP4194964A1 (de) 2021-12-10 2021-12-10 Unruh mit trägheitsregulierung

Country Status (4)

Country Link
US (1) US20230185241A1 (de)
EP (1) EP4194964A1 (de)
JP (1) JP2023086663A (de)
CN (1) CN116256960A (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH264669A (fr) 1947-10-30 1949-10-31 Ernest Borel & Cie S A Balancier à vis réglantes pour mouvements de montres et autres pièces d'horlogerie.
US20030179655A1 (en) * 2002-03-21 2003-09-25 Chopard Manufacture S.A. Balance wheel provided with an adjustment device
EP1837719B1 (de) 2006-03-24 2009-06-03 Nivarox-FAR S.A. Unruh für Uhrwerk
CH705238A2 (fr) * 2011-07-15 2013-01-15 Nivarox Sa Balancier à réglage d'inertie pour mouvement d'horlogerie.
EP3839655A1 (de) * 2019-12-18 2021-06-23 Nivarox-FAR S.A. Unruh für uhrwerk

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2410386B1 (de) * 2010-07-19 2018-10-03 Nivarox-FAR S.A. Unruh mit Trägheitsregulierung mit Einsatzteil
JP6070937B2 (ja) * 2013-02-20 2017-02-01 セイコーインスツル株式会社 てんぷ、時計用ムーブメント及び機械式時計
EP2990883A1 (de) * 2014-08-29 2016-03-02 Nivarox-FAR S.A. Spiralunruh-Einheit für Uhrwerk

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH264669A (fr) 1947-10-30 1949-10-31 Ernest Borel & Cie S A Balancier à vis réglantes pour mouvements de montres et autres pièces d'horlogerie.
US20030179655A1 (en) * 2002-03-21 2003-09-25 Chopard Manufacture S.A. Balance wheel provided with an adjustment device
EP1837719B1 (de) 2006-03-24 2009-06-03 Nivarox-FAR S.A. Unruh für Uhrwerk
CH705238A2 (fr) * 2011-07-15 2013-01-15 Nivarox Sa Balancier à réglage d'inertie pour mouvement d'horlogerie.
EP3839655A1 (de) * 2019-12-18 2021-06-23 Nivarox-FAR S.A. Unruh für uhrwerk

Also Published As

Publication number Publication date
CN116256960A (zh) 2023-06-13
JP2023086663A (ja) 2023-06-22
US20230185241A1 (en) 2023-06-15

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