EP2725433A1 - Bewegliches Tourbillon mit beweglicher Unruh für Uhrwerk - Google Patents

Bewegliches Tourbillon mit beweglicher Unruh für Uhrwerk Download PDF

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Publication number
EP2725433A1
EP2725433A1 EP12190230.8A EP12190230A EP2725433A1 EP 2725433 A1 EP2725433 A1 EP 2725433A1 EP 12190230 A EP12190230 A EP 12190230A EP 2725433 A1 EP2725433 A1 EP 2725433A1
Authority
EP
European Patent Office
Prior art keywords
cage
integral
tourbillon
bearing
balance
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
EP12190230.8A
Other languages
English (en)
French (fr)
Other versions
EP2725433B1 (de
Inventor
Laurent Rougny
Michel Capt
Edouard Prost
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
Priority to EP20120190230 priority Critical patent/EP2725433B1/de
Priority to CN201310498684.8A priority patent/CN103792827B/zh
Publication of EP2725433A1 publication Critical patent/EP2725433A1/de
Application granted granted Critical
Publication of EP2725433B1 publication Critical patent/EP2725433B1/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
    • 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 relates to a vortex, for watch movement, comprising a cage intended to be rotatably mounted on a frame member of the watch movement by means of a cage bearing, ball or roller, the cage including a shaft balance, carrying a balance wheel, as well as an escapement and a hairspring.
  • the invention also relates to a watch movement comprising such a tourbillon and a timepiece provided with such a watch movement.
  • a main object of the present invention is to propose an alternative embodiment to vortices known in the state of the art, allowing in particular to build a vortex of reduced thickness, without impairing the accuracy of oscillations of the sprung balance.
  • the present invention relates more particularly to a vortex of the type mentioned above, characterized in that the balance shaft is integral with the cage while the balance is pivotally mounted with reference to the balance shaft by means of of a balance wheel bearing, ball or roller.
  • the lower and upper bearings, usually used to pivot the balance shaft can be eliminated and, therefore, the portion of the tourbillon cage performing the balance bridge function, which normally covers the sprung balance, can also be removed.
  • the sprung balance and the escapement are more easily visible than in the vortices of the prior art, and the vortex can have a very small thickness.
  • the cage bearing comprises a central portion and an outer portion, one of which is integral with the cage and the other is intended to be secured to the watch movement, the balance shaft being assembled directly. to the part of the cage bearing that is secured to the cage.
  • the cage bearing comprises a hub integral with the cage and an outer ring intended to be secured to the watch movement, the balance shaft then being secured to the hub.
  • the balance shaft may preferably present a shoulder, against which the hub is arranged in abutment, and a thread, formed at its end located opposite the shoulder and on which is screwed a nut so as to make the balance shaft and the hub integral with the one of the other.
  • a drive gear of the cage is then preferably interposed between the hub and the nut.
  • the tourbillon cage comprises a lower bridge, integral with the hub, and an upper bridge, integral with the lower deck, the escapement comprising an anchor and an escape wheel both arranged so as to rotate between the lower and upper decks.
  • the cage comprises a lower bridge, integral with the hub and having at least one portion located at the periphery of the cage bearing.
  • the outer ring may be provided with a set of teeth acting as a fixed wheel for the vortex, the portion of the lower deck located at the periphery of the cage bearing carrying an escape wheel whose pinion is arranged in engagement with the fixed wheel.
  • the balance wheel bearing advantageously comprises internal and external cages, the balance being secured to the outer cage, with the interposition of an intermediate member of substantially annular shape and, carrying an ankle to fulfill the plate function in relation to the 'exhaust.
  • the inner cage comprises a portion of the balance shaft, associated with a ring assembled to the latter.
  • the balance shaft carries a ferrule fixing a first end of the spiral.
  • the balance carries a fixing member of a second end of the hairspring.
  • the present invention also relates to a watch movement comprising a tourbillon according to the above characteristics, as well as a timepiece comprising a box closed by at least one mirror and housing such a watch movement, the vortex being arranged such that the spiral is visible directly through the ice, without interposition of another component between him and the ice.
  • a watch movement could also include an automatic winding system comprising an annular mass arranged around the movement on its periphery. In this way, an automatic whirl motion is obtained that is extremely flat.
  • Figures 1 and 2 represent simplified perspective views, from one side and the other, of a tourbillon according to a preferred embodiment of the invention.
  • Figures 3, 4 and 5 represent cross-sectional views of the whirlwind of Figures 1 and 2 , taken according to three different respective cutting planes.
  • FIGS. 1 and 2 represent simplified perspective views, from one side and the other, of a vortex 1 according to a preferred embodiment of the invention. These views make it possible to appreciate the general appearance of tourbillon 1 and more particularly to what extent it is spectacular.
  • the vortex 1 comprises a balance-spiral assembly comprising a spiral 2 surmounting a balance 4, the spiral 2 being located on top of the vortex 1, without any other component is arranged above him. Therefore, if the vortex is arranged opposite an ice in a timepiece, the spiral is fully visible, the balance 4 is only partially masked by the hairspring 2.
  • the rocker 4 is carried by a balance shaft 6 arranged in the center of the vortex 1. It comprises two arms 8, one of which carries a pin 10 for fixing the outer end 12 of the spiral 2. The inner end 14 of the spiral 2 is secured to a ferrule 16 carried by the balance shaft 6.
  • the vortex further comprises a cage 18 including lower bridges 20 and upper 22, arranged under the balance 4.
  • the bridges are connected to each other by means of cage pillars 24, in a conventional manner.
  • Components of an escapement in particular an escapement wheel 26 (comprising a wheel and a pinion in a known manner) and an anchor 28, are pivoted between the two bridges 20 and 22, by means of stones 30, in a known manner .
  • the figure 2 illustrates more particularly how the vortex 1 can be assembled to the frame of a clockwork movement (not shown) and how the oscillations of the sprung balance can be maintained.
  • the vortex 1 comprises a rolling cage 32 of conventional type, ball or roller.
  • the cage bearing 32 comprises a hub 34 integral with the cage 18 (as will become more clearly apparent from the detailed description of the Figures 3 to 5 ) and an outer ring 36, intended to be secured to a frame member of the watch movement, in principle by means of screws (not shown),
  • a nut 38 is integral with the hub 34, in a manner to be described later, and at the same time ensures the tightening of a drive pinion 40 of the cage 18.
  • the drive pinion 40 is intended to mesh with a mobile of the finishing gear of the watch movement, in known manner.
  • the outer ring 36 has a peripheral toothing 42 enabling it to fulfill the role of fixed wheel.
  • the lower bridge 20 has a shape such that its portion carrying the escapement wheel 26 is located at the periphery of the cage bearing 32.
  • the exhaust pinion meshes with the toothing 42 of the outer ring 36, so as to drive all the cage 18 in rotation, in a conventional manner.
  • FIGS. 3, 4 and 5 represent cross-sectional views of the vortex 1, taken in three different respective sectional planes, namely a first passing through the escapement mobile 26, a second passing through a pillar 24 of the cage 18 and the third passing through the anchor 28.
  • the rocker shaft 6 has a shoulder 44, arranged in abutment against the hub 34, and has a thread at its lower end 46 cooperating with the nut 38, so that the drive pinion 40 is clamped between the nut 38 and the hub 34.
  • the nut 38 clamps the hub 34 against the balance shaft 6 and thus makes the latter integral with the cage 18.
  • the hub 34 is made in two parts, with a ring 48 driven on a main portion to allow insertion of the balls into the cage bearing when the outer ring 36 is arranged opposite the hub 34.
  • pins 50 and 52 respectively provide the rotational holding between, on the one hand, the lower bridge 20 and the hub 34 and, on the other hand, the hub 34 and the drive pinion 40.
  • rocker 4 is rotatably mounted on the rocker shaft 6 by means of a ball bearing 54, with balls, with the interposition of an intermediate member 56, of substantially annular shape, and carrying an ankle to fulfill the function of plateau in relation to a dart 58 (visible only on the figure 5 ) of the anchor 28.
  • the rocker bearing 54 comprises an internal cage whose function is provided here directly by the balance shaft 6.
  • the latter has a ring 60 made in one piece with the shaft, while a second ring 62, reported, is driven on the balance shaft 6 to trap the balls, after an outer cage 64 has been arranged opposite the inner cage.
  • a first end of the balance spring is integral with the balance shaft while its second end is integral with the balance itself, as a preferred but non-limiting embodiment.
  • the foregoing description attempts to describe a particular embodiment by way of non-limiting illustration and the invention is not limited to the implementation of certain particular features which have just been described, for example the method of fixing the ends of the spiral or the shape of the bridges 20 and 22 of the tourbillon cage.
  • the upper bridge has a portion arranged near the hairspring to ensure the anchoring of one of its ends, without departing from the scope of the present invention.
  • the lower bridge 20 and / or the upper bridge 22 may be one-piece with the hub 34 of the cage bearing 32.
  • the method of attachment of the rocker shaft to the hub of the cage bearing can be modified without departing from the scope of the present invention.
  • the balance shaft comprises an additional thread intended to cooperate with a tapped hole in the hub, to ensure a connection by screwing them.
  • the outer portion of the cage bearing is integral with the cage, while its central portion is intended to be secured to the watch movement.
  • the movement may include a ring gear internally to mesh with the pinion of the exhaust mobile, while the drive gear of the cage will be secured to the outer portion of the cage bearing.
  • vortex must also be taken in a broad sense that includes a carousel mechanism because, for example, the fixed parts 36 and 42 could be integral with a mobile wheel driven by the finishing train.
  • a vortex according to the invention may be used in combination with an automatic winding system of the movement barrel whose mass has an annular shape and is arranged around the periphery of the movement which results in an automatic vortex movement which is extremely flat.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Rolling Contact Bearings (AREA)
EP20120190230 2012-10-26 2012-10-26 Bewegliches Tourbillon mit beweglicher Unruh für Uhrwerk Active EP2725433B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20120190230 EP2725433B1 (de) 2012-10-26 2012-10-26 Bewegliches Tourbillon mit beweglicher Unruh für Uhrwerk
CN201310498684.8A CN103792827B (zh) 2012-10-26 2013-10-22 用于钟表机芯的具有飞行摆轮的飞行陀飞轮

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20120190230 EP2725433B1 (de) 2012-10-26 2012-10-26 Bewegliches Tourbillon mit beweglicher Unruh für Uhrwerk

Publications (2)

Publication Number Publication Date
EP2725433A1 true EP2725433A1 (de) 2014-04-30
EP2725433B1 EP2725433B1 (de) 2015-04-29

Family

ID=47215395

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20120190230 Active EP2725433B1 (de) 2012-10-26 2012-10-26 Bewegliches Tourbillon mit beweglicher Unruh für Uhrwerk

Country Status (2)

Country Link
EP (1) EP2725433B1 (de)
CN (1) CN103792827B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH712756A1 (fr) * 2016-07-29 2018-01-31 Richemont Int Sa Mouvement d'horlogerie à remontage automatique.
EP4194961A1 (de) 2021-12-07 2023-06-14 H.K. Precision Technology Co. Ltd Regulierungseinheit für ein uhrwerk mit einem gestell, das mithilfe eines kugellagers drehbar montiert wird

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2990883A1 (de) * 2014-08-29 2016-03-02 Nivarox-FAR S.A. Spiralunruh-Einheit für Uhrwerk
EP3029530B1 (de) * 2014-12-03 2019-08-14 Nivarox-FAR S.A. Wirbelmechanismus
CH712973B1 (de) * 2016-09-23 2023-12-29 Bucherer Ag Tourbillon und Uhr mit Tourbillon.
US20220326659A1 (en) * 2019-09-30 2022-10-13 Gepi Sa Timepiece movement

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7744271B2 (en) 2003-05-02 2010-06-29 Watch-U Licence Ag Double sided tourbillon

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH697781B1 (fr) * 2004-02-13 2009-02-13 Gfpi S A Pièce d'horlogerie munie d'un tourbillon.
CH700862A1 (fr) * 2009-04-29 2010-10-29 Richemont Int Sa Tourbillon sans le poids du balancier.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7744271B2 (en) 2003-05-02 2010-06-29 Watch-U Licence Ag Double sided tourbillon

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH712756A1 (fr) * 2016-07-29 2018-01-31 Richemont Int Sa Mouvement d'horlogerie à remontage automatique.
EP4194961A1 (de) 2021-12-07 2023-06-14 H.K. Precision Technology Co. Ltd Regulierungseinheit für ein uhrwerk mit einem gestell, das mithilfe eines kugellagers drehbar montiert wird

Also Published As

Publication number Publication date
CN103792827A (zh) 2014-05-14
CN103792827B (zh) 2018-04-03
EP2725433B1 (de) 2015-04-29

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