EP2879005A2 - Tourbillon- oder Karussellmechanismus - Google Patents

Tourbillon- oder Karussellmechanismus Download PDF

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Publication number
EP2879005A2
EP2879005A2 EP14194877.8A EP14194877A EP2879005A2 EP 2879005 A2 EP2879005 A2 EP 2879005A2 EP 14194877 A EP14194877 A EP 14194877A EP 2879005 A2 EP2879005 A2 EP 2879005A2
Authority
EP
European Patent Office
Prior art keywords
shaft
cage
balance
carousel mechanism
mechanism according
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.)
Withdrawn
Application number
EP14194877.8A
Other languages
English (en)
French (fr)
Other versions
EP2879005A3 (de
Inventor
Franck Orny
Marc Frelechoux
Johnny Girardin
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.)
Noriah SA
Original Assignee
Noriah 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 Noriah SA filed Critical Noriah SA
Publication of EP2879005A2 publication Critical patent/EP2879005A2/de
Publication of EP2879005A3 publication Critical patent/EP2879005A3/de
Withdrawn legal-status Critical Current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
    • G04B17/20—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
    • 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

Definitions

  • the present invention also relates to a timepiece comprising such a tourbillon or carousel mechanism.
  • the tourbillon is a rotating regulating system well known to those skilled in the art. It is known that, when the escapement of a mechanical watch is in a vertical position, the inevitable imbalances of the balance and spiral generated by the earth's gravitation cause gait deviations. The purpose of the vortex is to compensate for these variations by making the balance-sprung, in the case of a vortex with a single axis, all the vertical positions.
  • a vortex is usually composed of a rocker and an escapement mechanism that includes an escape wheel and, in the case of an anchor escapement, an anchor.
  • These elements are mounted in a rotating cage suspended between two pivot points, which may be located on the plate and the bridge bar or on the cage bridge and the bridge bar.
  • the cage functions as the second mobile. It carries, on its axis, a pinion of second and is driven by the average wheel.
  • Inside the cage the role of the exhaust is conventional. The force is transmitted from an exhaust pinion coaxial with the escape wheel, this pinion meshing, in the manner of a satellite, with a fixed second wheel, solidary of the plate.
  • the tourbillon cage traditionally comprises at least one lower bridge and one upper bridge between which is pivotally mounted the axis of the balance in bearings provided respectively in said lower bridge and said upper bridge.
  • the lower and upper decks are assembled by means of pillars arranged outside the beam of the beam so as not to interfere with its oscillations, generally according to an amplitude of 220 °.
  • An object of the present invention is therefore to overcome these disadvantages, by proposing a whirlwind mechanism or carousel of original construction and to increase the energy available for the pendulum without impairing the accuracy of a movement comprising such a mechanism swirl.
  • the cage shaft is mounted through said cage and the balance comprises a rocker shaft pivotally mounted around the cage shaft by means of at least one stone.
  • the balance shaft is pivotally mounted around the cage shaft by at least two stones.
  • the stones can be pierced stones to allow the passage of the cage tree (5).
  • the mechanism does not include any balance bearing.
  • the upper deck of the cage is removed so that the diameter of the balance is no longer imposed by the space available between the pillars connecting the lower and upper decks of traditional cages.
  • the cage comprises a lower bridge and an upper bridge integral in rotation with the cage shaft and whose ends define a radius Rmax with respect to the axis of rotation of the cage, Rmax being less than R.
  • the dimensions of the cage are reduced but without affecting the precision of the movement.
  • the cage being smaller, it requires less energy, and the energy available to power the pendulum is then increased, which increases its accuracy and its barrel spring reserve equal.
  • the invention also relates to a timepiece comprising a tourbillon or carousel mechanism as defined above and a frame comprising a lower plate and an upper bridge, the through shaft being pivotally mounted between said lower plate and said upper deck of the frame.
  • a vortex is a rotating regulating system, in which a rocker 1, associated with a spiral spring 2, and an escapement mechanism comprising an escape wheel 3, are mounted in a cage 4.
  • the cage 4 comprises a shaft 5 forming the axis of rotation AA of said cage 4, the shaft 5 being pivotally mounted about its axis AA between a lower plate and an upper bridge (not shown) of a frame of a watch movement.
  • the escapement also comprises an anchor 6, cooperating with the balance 1 and with the escape wheel 3 by pallets 7.
  • the cage 4 comprises a lower bridge 8 and an upper bridge 10, or exhaust bridge, integral in rotation with the shaft shaft 5 between which are mounted pivoting the escape wheel 3 and the anchor 6.
  • an exhaust pinion 12 coaxial with the escape wheel 3 is intended to cooperate with a fixed wheel (not shown) integral with the frame of the movement.
  • the cage 4 is secured to a drive pinion 14 intended to be kinematically connected to the gear train of the movement.
  • the cage shaft 5 is mounted through said cage 4 and the rocker 1 comprises a rocker shaft 16 pivotally mounted around the shaft shaft 5.
  • the shaft of cage 5 is in the form of a pin AA axis terminated at each of its ends by a pivot 5a, 5b respectively directed outwardly of the cage 4.
  • These pivots 5a, 5b are conventional and are intended to cooperate with bearings housed in the lower plate and the upper bridge (not shown) of the frame.
  • the shaft of the shaft 5 passes through the drive gear 14 which it is integral, then comprises a base 18 on which is fixed the lower bridge 8 as it is will see below.
  • the shaft of the shaft shaft 5 has a shoulder 20 on which the rocker and then a shoulder 22 on which is positioned a bridge bolt 24, and finally the pivot 5a.
  • the rocker shaft 16 is hollow and is in the form of a pivotally mounted tube, and thus free to rotate around the shaft of the shaft shaft 5.
  • the balance shaft 16 comprises a base 25 integral with the tube, and resting on the shoulder 20 of the shaft shaft 5.
  • a plurality of pierced stones 26 are provided at the ends of the pipe.
  • the base 25 constitutes the balance plate and may be in the form of a double-plate provided with a pin cooperating with the exhaust and a notch for the passage of the dart 32.
  • the The base of the balance plate can be arranged in the form of a simple plate.
  • the hairspring 2 is fixed to the tube of the balance shaft 16 via a ferrule 34 and to the bridge-stud bolt 24 via a pin 36 (cf. figure 1 ).
  • the bridge-stud bolt 24 is secured to the shaft shaft 5.
  • the conventional balance shaft is removed, so that the upper bridge of the traditional vortex and the balance bearings in which the axis of the pendulum pivots traditionally are also removed.
  • the base 18 of the cage shaft 5 and the stud bridge 24 define the lower and upper contours of the cage 4 within which the rocker 1 and the balance shaft are positioned.
  • the traditional upper deck being removed, the tourbillon cage no longer includes pillars connecting the lower and upper decks of traditional cages, so that the diameter of the pendulum is no longer imposed.
  • This construction also has the advantage that the number of parts to be manufactured is reduced compared to a traditional vortex. The different parts are also simpler and more economical to manufacture.
  • the balance 1 comprises an annular serge 28 or any other suitable form, and three arms 30 connecting the serge 28 to the tube of the balance shaft 16.
  • the serge 28 has an inner radius R with respect to its axis of rotation.
  • the radius R is defined as being the closest distance between the inner face of the serge and the axis of rotation of the balance.
  • the expression "the radius R of the pendulum" corresponds to these two definitions.
  • the ends of the lower bridge 8 and the upper bridge 10 define a radius Rmax with respect to the pivot axis AA of the cage 4, where Rmax is smaller than R. It is obvious that the bridge lower and the upper bridge can also define a radius Rmax with respect to the pivot axis AA of the cage 4, where Rmax is greater than R.
  • the lower bridge 8 comprises a central body 38, of annular shape and integral with the base 18 of the shaft shaft 5.
  • the lower bridge 8 also comprises a structure 39 integral with the central body 38, the spaces between the central body 38 and the structure 39 being recessed.
  • the upper bridge 10 has the form of a hollowed out structure in its center and secured to the lower bridge 8 by connecting means.
  • said connection means of the lower bridge 8 and the exhaust bridge 10 are pillars 40.
  • the structures of the lower bridge 8 and exhaust 10 have superimposed triangular general shapes, two of the triangles corresponding to the points of attachment points by the pillars 40, and the third vertex corresponding to the pivot axis of the anchor 6
  • the smallest side of the triangle comprises two arms 42 whose junction with those the other structure, corresponds to the axis of pivoting of the escape wheel 3.
  • the lengths of the sides of the triangular structures of the lower deck 8 and exhaust 10 as well as the arms 42 and the peg holder, and the diameter of the base 18 and the central body 38 are smaller than the radius R of the beam so that the cage 4 and the escapement are inscribed inside the strut 28 of the balance 1, as figure 4 .
  • the construction of the tourbillon described above provides an extremely light and airy structure.
  • the tourbillon cage does not include a pillar connecting a lower deck to an upper deck, the pendulum can oscillate independently of its diameter. The amplitude of the pendulum is not altered.
  • the balance 1 is arranged at a lower level, with respect to the first variant.
  • the rocker 1 is located under the cage 4, with reference to the drawing.
  • the upper level corresponds to the dial side of the construction, the balance 1 being here located on the bridge side.
  • this variant proposes a balance 1 of shape, which defines a concavity oriented dial side, within which takes place the cage 4.
  • This concavity is obtained, for example, by proposing curved arms 30 , whose end on the side of the serge, has an elbow.
  • the concavity is deep enough so that the two bridges 8 and 10 forming the cage 4 are located within said concavity, that is to say they do not exceed.
  • only an additional bridge 50 allowing the pivoting of the wheel and the exhaust pinion, is located at a level higher than the level defined by the balance, to allow meshing of the exhaust pinion with the fixed wheel , not shown.
  • the additional bridge 50 could also be disposed within the concavity.
  • the cage shaft 5 is made in several parts.
  • the upper pivots 5a and lower 5b are separate elements and they are connected by an axis 52 which passes through the balance shaft. More specifically, the upper pivot 5a, in addition to the pivot zone, comprises a flange 54 for positioning and adjusting the upper cage bridge 10.
  • the upper pivot 5a also comprises a hole 56 in its center, on the side of the inside the cage 4.
  • the axis 52 is fixed, typically by driving, in this bore 56.
  • the stones 26 which allow pivoting of the rocker shaft 16 are integral with the rocker shaft 16 and are traversed by the axis 52.
  • the lower pivot 5b On the side of the upper pivot 5a, a washer 55, which can receive the other end, the lower pivot 5b includes a sleeve 58, allowing the adjustment and maintenance of the lower pivot in the bridge-stud bolt 24, and the access to the axis 52 for its hunting in the upper pivot 5a.
  • This sleeve 58 also allows to receive the drive pinion 14, extended by the pivot zone.
  • Example 1 relates to a small vortex
  • Example 2 relates to a large vortex
  • Example 3 a vortex as described in the patent EP 2 189 855
  • Example 4 a vortex according to the invention
  • the inertia of the balance we increase the quality factor.
  • I T the inertia of the vortex decreases the losses. Compared to a vortex occupying the same volume, we will have more energy in the balance, and for the same energy available.
  • the I / I T ratio is particularly improved.
  • the present invention facilitates balancing.
  • the pendulum being larger than the tourbillon cage, it is the balance of the pendulum which is the most influential. But balancing a pendulum is better controlled than that of a cage.
  • the cage is located inside the balance and being smaller, its center of gravity is close to the theoretical axis. Balancing is better and easier to achieve.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Micromachines (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)
EP14194877.8A 2013-12-02 2014-11-26 Tourbillon- oder Karussellmechanismus Withdrawn EP2879005A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH01987/13A CH708960B1 (fr) 2013-12-02 2013-12-02 Mécanisme de tourbillon et pièce d'horlogerie comprenant un tel mécanisme.

Publications (2)

Publication Number Publication Date
EP2879005A2 true EP2879005A2 (de) 2015-06-03
EP2879005A3 EP2879005A3 (de) 2016-05-18

Family

ID=52003595

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14194877.8A Withdrawn EP2879005A3 (de) 2013-12-02 2014-11-26 Tourbillon- oder Karussellmechanismus

Country Status (2)

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EP (1) EP2879005A3 (de)
CH (1) CH708960B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113671814A (zh) * 2021-08-04 2021-11-19 杭州手表有限公司 带有环形条盒轮结构的手表
CN114647174A (zh) * 2020-12-17 2022-06-21 爱彼钟表业制造有限公司 用于钟表机芯的陀飞轮

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2189855A1 (de) 2008-11-20 2010-05-26 Noriah SA Tourbillon-Gehäuse und Tourbillon-Mechanismus, der ein solches Gehäuse umfasst

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH702707B1 (fr) * 2007-04-05 2011-08-31 Complitime Sa Mouvement de pièce d'horlogerie à tourbillon.
CH705277B1 (fr) * 2007-11-30 2013-01-31 Manuf La Joux Perret S A Mécanisme de tourbillon.
CH702853B1 (fr) * 2010-03-19 2016-04-15 Télôs Watch SA Mouvement horloger comprenant un tourbillon.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2189855A1 (de) 2008-11-20 2010-05-26 Noriah SA Tourbillon-Gehäuse und Tourbillon-Mechanismus, der ein solches Gehäuse umfasst

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114647174A (zh) * 2020-12-17 2022-06-21 爱彼钟表业制造有限公司 用于钟表机芯的陀飞轮
CN114647174B (zh) * 2020-12-17 2023-12-26 爱彼钟表业制造有限公司 用于钟表机芯的陀飞轮
CN113671814A (zh) * 2021-08-04 2021-11-19 杭州手表有限公司 带有环形条盒轮结构的手表

Also Published As

Publication number Publication date
CH708960A2 (fr) 2015-06-15
EP2879005A3 (de) 2016-05-18
CH708960B1 (fr) 2017-10-31

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