EP4194961A1 - Regulierungseinheit für ein uhrwerk mit einem gestell, das mithilfe eines kugellagers drehbar montiert wird - Google Patents

Regulierungseinheit für ein uhrwerk mit einem gestell, das mithilfe eines kugellagers drehbar montiert wird Download PDF

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Publication number
EP4194961A1
EP4194961A1 EP21212988.6A EP21212988A EP4194961A1 EP 4194961 A1 EP4194961 A1 EP 4194961A1 EP 21212988 A EP21212988 A EP 21212988A EP 4194961 A1 EP4194961 A1 EP 4194961A1
Authority
EP
European Patent Office
Prior art keywords
cage
bearing
toothing
assembly
escapement
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
EP21212988.6A
Other languages
English (en)
French (fr)
Inventor
David LAI HIN KIU
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.)
HK Precision Technology Co Ltd
Original Assignee
HK Precision Technology Co Ltd
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 HK Precision Technology Co Ltd filed Critical HK Precision Technology Co Ltd
Priority to EP21212988.6A priority Critical patent/EP4194961A1/de
Publication of EP4194961A1 publication Critical patent/EP4194961A1/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
    • G04B17/20—Compensation of mechanisms for stabilising frequency
    • G04B17/28—Compensation of mechanisms for stabilising frequency for the effect of unbalance of the weights, e.g. tourbillon
    • G04B17/285—Tourbillons or carrousels
    • 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
    • G04B17/32—Component parts or constructional details, e.g. collet, stud, virole or piton
    • 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
    • G04B31/004—Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor characterised by the material used
    • G04B31/012—Metallic bearings
    • G04B31/0123—Metallic bearings with metallic ball bearings and metallic roller bearings

Definitions

  • the patent EP1623282B1 and the patent application EP2725433A1 describe flying tourbillons, that is to say assembled on a frame element of the watch movement by a single bearing, meeting the above characteristics.
  • the above patent describes a tourbillon whose cage bearing has an internal ring secured to a sleeve through which the balance shaft is arranged.
  • the balance wheel is integral with its shaft, close to a first end of the latter, while the second end of the shaft carries the plate cooperating with the escapement.
  • this arrangement also makes it possible to use a balance shaft of considerable length.
  • the constructions have a large size, particularly in the center, which drastically limits the possibilities of further reducing the total thickness of the corresponding regulating assembly, the latter being in any case determined by the length adopted for the balance shaft.
  • the arrangement of various components, in particular on either side of the cage bearing, makes the assembly of these constructions relatively complex.
  • a main object of the present invention is to propose a construction for a regulating assembly, intended to be assembled to a frame element of a watch movement by means of a cage bearing, therefore of the steering wheel type, having an assembly relatively simple and an overall thickness reduced with reference to the constructions already known.
  • the present invention relates more particularly to a regulating assembly of the type mentioned above, characterized in that the raceway has a radius greater than the radius of the fixed teeth.
  • the thickness of the assembly can be reduced.
  • the radius of the fixed toothing determines the trajectory of the escape pinion.
  • the construction preferably comprises two bearings for assembling the escapement wheel set on the cage, a first at the end of its shaft located on the side of the escape pinion and a second at the end of its shaft located on the side of the escape wheel.
  • the trajectory of the bearing located on the side of the escape pinion must be free of any obstacle, as emerges from the prior teachings mentioned above, in which the escape wheel set describes a trajectory located towards the periphery of the corresponding regulating assembly.
  • the escapement pinion may be partially positioned at the same level as the cage bearing, along the thickness direction, positioning the raceway outside the path of the pinion d
  • the escapement also makes it possible to free up a central space inside the cage bearing, thus offering greater construction flexibility than in the case of previous constructions.
  • the assembly of the cage to the frame of the watch movement is more robust and more stable than in the previous constructions thanks to a better seat resulting directly from the characteristics of the invention.
  • the construction of the regulating assembly according to the present invention makes it possible to offer better visibility of its components to the wearer of the corresponding timepiece, thus offering better attractiveness to the latter.
  • the fixed toothing and the drive toothing are located on the same side of a mean plane in which the raceway is arranged.
  • provision can preferably be made for the fixed toothing to be internal toothing and for the drive toothing to be external toothing.
  • the thickness of the construction can be reduced significantly, since these two teeth can be located at very close levels in the direction of the thickness when they have opposite orientations.
  • the second ring can be integral with at least two fixing members to the frame element, each of which is located at a distance from the central axis of the cage bearing greater than the radius of said fixed teeth.
  • provision may be made for the fixed toothing to be made in one piece with the second ring.
  • the cage in general, provision can advantageously be made for the cage to include a platform bearing a bearing for the escapement pinion and a bearing for the balance, the platform being made in one piece with the first ring.
  • the cage comprises a platform
  • the cage can also be made for the cage to include an escapement bridge, interposed between the platform and the balance bridge, carrying a bearing for the escape wheel and a bearing for an anchor.
  • the present invention also relates to a watch movement comprising a source of mechanical energy and a frame element carrying a regulating assembly according to the above characteristics, the drive toothing of which is arranged in kinematic connection with the source of mechanical energy.
  • the present invention also relates to a timepiece comprising such a timepiece movement.
  • FIG. 1 shows a simplified perspective view of part of a watch movement incorporating a regulating assembly 1 according to a preferred embodiment of the present invention.
  • the regulating assembly 1 here comprises a tourbillon comprising a cage 2 intended to be pivotally mounted on a frame element (not visible) of the watch movement, for example a plate, by means of a cage bearing 4 .
  • Cage 2 carries a rocker arm 6 associated with a return spring 8, preferably a spiral spring, and rotatably mounted on cage 2 so as to be able to present oscillations with reference to the latter.
  • the illustrated balance wheel 6 is of the flyweight type making it possible to adjust its balancing and its inertia, by way of non-limiting illustration.
  • Cage 2 also carries an escapement arranged to cooperate with balance wheel 6 and comprising an anchor 10 as well as a mobile escapement comprising an escapement wheel 12 and an escapement pinion 14 integral with one another, in a conventional manner.
  • the escapement pinion 14 is arranged in permanent engagement with a fixed toothing 16, as is typically the case in tourbillons.
  • the cage 2 carries a drive toothing 18 arranged in kinematic connection with a source of mechanical energy 20 of the watch movement, here a barrel, via a going train 22.
  • the latter also ensures the training of current time display members not shown, in particular via a roadway 24.
  • the cage bearing 4 comprises a base 25 from which extend extensions carrying fixing members 26 intended to allow the assembly of the base 25 on the frame element of the watch movement.
  • each extension here comprises a hole through which is arranged a screw foot intended to be inserted into a suitable hole in the plate, before receiving a screw, by way of non-limiting illustration.
  • FIGS. 1 and 3 represent views of the regulating assembly 1 of the figure 1 , respectively in exploded and simplified perspective and in simplified cross-section, allowing better appreciation of certain construction details.
  • Cage 2 comprises a platform 30 whose center is partly hollowed out or skeletonized to retain only functional portions distributed over three height levels.
  • Three radial portions 32 arranged at the highest level (in reference here to the frame of the watch movement), ensure the connection between the periphery of the platform 30 and a central portion 34 arranged at an intermediate level of height.
  • Two of the radial portions 32 have a hole allowing the assembly of two cage pillars 36 to be carried out.
  • the central portion 34 carries a first bearing 38 for mounting the balance wheel 6 (via its shaft), as well as a bearing 39 for the anchor 10.
  • a recess 40 in the central portion 34 defines a housing for the escapement pinion 14, at a third height level, and carries a bearing for the escapement wheel set, on the side of its escapement pinion 14.
  • the central portion 34 also includes two additional holes 42 to allow the assembly of an escapement bridge 44, or anchor bridge, on the platform 30 by means of two screws 46.
  • the escapement bridge 44 carries a bearing 48 for the lever 10 and another bearing 50 for the escape wheel, on the side of its escape wheel 12.
  • the escapement bridge 44 has an opening 52 defining a passage for the balance shaft and its double plate (not visible) intended to cooperate with the anchor 10, in a conventional manner.
  • the escapement bridge 44 is surmounted by the balance-spring and then by a balance bridge 54 carrying another bearing 56 to ensure the mounting of the balance 6 in the cage 2, via its shaft, with a conventional anti-shock system. which will not be described in detail, just like the bearing 38.
  • the balance bridge 54 is secured to the two cage pillars 36 by means of screws 58.
  • the balance bridge 54 supports a stud holder 60 arranged to retain the outer end of the spiral spring 8 and, advantageously, a rack 62 allowing the rate of the watch movement to be adjusted by modifying the active length of the spiral spring 8, via an eccentric 64, in a known manner.
  • the platform 30 is here advantageously made in one piece with the drive teeth 18, and also with a first ring 66 of the cage bearing 4.
  • two of these components or the three components could be separate from each other and be assembled.
  • the base 25 is integral with a second ring 68 of the cage bearing 4.
  • the first and second rings 66 and 68 are nested one inside the other, they define between them a raceway in which balls 70 are positioned. Provision could be made for the use of rollers as an alternative without departing from the scope of the invention as defined by the appended claims.
  • the platform 30, and therefore the entire cage 2 is capable of rotating freely with reference to the frame of the watch movement as a consequence of the drive in rotation of the drive toothing 18 by the barrel 20.
  • the escapement pinion 14 cooperates with the fixed toothing 16 to receive energy during the rotation of the cage 2 when the escapement wheel 12 is released by the lever 10, in a known manner, as is more particularly visible on the sectional view of the picture 3 .
  • the fixed toothing 16 is here preferably made in one piece with the second ring 68 of the cage bearing 4, which makes it possible to further simplify the assembly of the regulating assembly 1.
  • the fixed toothing 16 and the second ring 68 are made in the form of two separate parts assembled to one another.
  • the construction of the regulating assembly 1 according to the present invention advantageously makes it possible to free up a lot of space in the center, in particular thanks to the fact that the raceway of the cage bearing 4 has been offset outside the fixed toothing 16, that is to say outside the path traveled by the escapement pinion 14.
  • the bearing 38 of the balance wheel 6 located on the side of the frame of the watch movement can be brought closer to the latter without being prevented from doing so by the presence of the cage bearing 4, as is the case in previous constructions.
  • the cage bearing 4 has a large diameter gives it great stability. It also appears that if the balance shaft 6 is here relatively short, it is possible to lengthen it if necessary, given that the space inside the cage bearing 4 is empty.
  • the construction according to the present invention also offers increased visibility with reference to previous constructions, insofar as the balance-spring and the escapement can be positioned on the same side of the cage bearing 4.
EP21212988.6A 2021-12-07 2021-12-07 Regulierungseinheit für ein uhrwerk mit einem gestell, das mithilfe eines kugellagers drehbar montiert wird Pending EP4194961A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP21212988.6A EP4194961A1 (de) 2021-12-07 2021-12-07 Regulierungseinheit für ein uhrwerk mit einem gestell, das mithilfe eines kugellagers drehbar montiert wird

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21212988.6A EP4194961A1 (de) 2021-12-07 2021-12-07 Regulierungseinheit für ein uhrwerk mit einem gestell, das mithilfe eines kugellagers drehbar montiert wird

Publications (1)

Publication Number Publication Date
EP4194961A1 true EP4194961A1 (de) 2023-06-14

Family

ID=78824995

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21212988.6A Pending EP4194961A1 (de) 2021-12-07 2021-12-07 Regulierungseinheit für ein uhrwerk mit einem gestell, das mithilfe eines kugellagers drehbar montiert wird

Country Status (1)

Country Link
EP (1) EP4194961A1 (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001018611A1 (fr) * 1999-09-02 2001-03-15 Watch-U-License Ag Indicateur de temps a regulation mecanique
WO2004006025A2 (de) * 2002-07-09 2004-01-15 Watch-U-License Ag Tourbillon
WO2006032974A2 (fr) * 2004-09-22 2006-03-30 Antoine Preziuso Geneve Sa Mouvement de montre muni de plusieurs balanciers
US20060181962A1 (en) * 2003-03-03 2006-08-17 Laurent Besse Tourbillon
US20070041276A1 (en) * 2003-05-02 2007-02-22 Jansen Rob E Double sided tourbillon
EP2725433A1 (de) 2012-10-26 2014-04-30 Richemont International S.A. Bewegliches Tourbillon mit beweglicher Unruh für Uhrwerk

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001018611A1 (fr) * 1999-09-02 2001-03-15 Watch-U-License Ag Indicateur de temps a regulation mecanique
WO2004006025A2 (de) * 2002-07-09 2004-01-15 Watch-U-License Ag Tourbillon
US20060181962A1 (en) * 2003-03-03 2006-08-17 Laurent Besse Tourbillon
US20070041276A1 (en) * 2003-05-02 2007-02-22 Jansen Rob E Double sided tourbillon
EP1623282B1 (de) 2003-05-02 2009-09-16 Watch-U Licence AG Doppelseitiger tourbillon
WO2006032974A2 (fr) * 2004-09-22 2006-03-30 Antoine Preziuso Geneve Sa Mouvement de montre muni de plusieurs balanciers
EP2725433A1 (de) 2012-10-26 2014-04-30 Richemont International S.A. Bewegliches Tourbillon mit beweglicher Unruh für Uhrwerk

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