EP1408381B1 - Zentrifugalregler eines Schlagwerkes, insbesondere in einer Uhr - Google Patents

Zentrifugalregler eines Schlagwerkes, insbesondere in einer Uhr Download PDF

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Publication number
EP1408381B1
EP1408381B1 EP02079171A EP02079171A EP1408381B1 EP 1408381 B1 EP1408381 B1 EP 1408381B1 EP 02079171 A EP02079171 A EP 02079171A EP 02079171 A EP02079171 A EP 02079171A EP 1408381 B1 EP1408381 B1 EP 1408381B1
Authority
EP
European Patent Office
Prior art keywords
inertia
plate
centrifugal
block
regulator
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.)
Expired - Lifetime
Application number
EP02079171A
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English (en)
French (fr)
Other versions
EP1408381A1 (de
Inventor
Jean Remont
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.)
Montres Breguet SA
Original Assignee
Montres Breguet 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 Montres Breguet SA filed Critical Montres Breguet SA
Priority to AT02079171T priority Critical patent/ATE438124T1/de
Priority to DE60233141T priority patent/DE60233141D1/de
Priority to EP02079171A priority patent/EP1408381B1/de
Publication of EP1408381A1 publication Critical patent/EP1408381A1/de
Application granted granted Critical
Publication of EP1408381B1 publication Critical patent/EP1408381B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G04B21/00—Indicating the time by acoustic means
    • G04B21/02—Regular striking mechanisms giving the full hour, half hour or quarter hour
    • G04B21/06—Details of striking mechanisms, e.g. hammer, fan governor

Definitions

  • the present invention relates to a centrifugal ring regulator, particularly for a timepiece, comprising a turntable about its central axis and provided with two diametrically opposed drive pads, a fixed body having an inner surface of revolution centered on said axis, and two flyweights mutually symmetrical with respect to said axis, each respectively engaged on one of the driving pads and arranged to bear against the inner surface of the body under the effect of the centrifugal force when the plate rotates.
  • a regulator of this kind can be used to limit the speed or rate of any mechanical ringing caused by at least one rotating element, for example in a clock or in a bell watch, whether it is of the passing or repeating type.
  • Such a regulator limits the speed primarily by friction.
  • the speed of the buzzer is stabilized as soon as the regulator reaches a speed of rotation such that the friction produces on its axis an equal and opposite torque to the engine torque that it receives from the drive member of the buzzer.
  • Such a regulator has the disadvantage of undergoing wear which modifies the friction conditions during its lifetime and also produces waste likely to affect the operation of the watch.
  • each weight is formed by a lever whose longest arm contains the center of gravity and whose shortest arm carries a roller which is supported by rolling against a fixed central cylinder.
  • the wear of the regulator members is almost zero, given the low angular velocity of the rollers in contact with the central cylinder, which may be of very small diameter. It can be deduced that a regulator constructed thus provides only a weak resisting torque.
  • the present invention aims to create a centrifugal regulator that avoids the drawbacks of the prior art, in particular by having little wear while having a good efficiency, with a size small enough to be incorporated in a watch.
  • centrifugal regulator of the kind indicated in the preamble, characterized in that each weight rests against the inner surface of the body via at least one roller rotatably mounted on the flyweight and arranged for rolling on said inner surface.
  • each weight comprises two of these rollers, which are spaced from each other in the direction of the circumference of the plate.
  • a spring-loaded barrel 2 which drives a gear train 3 connected to a regulating system constituted in this case by a vortex 4.
  • the watch 1 also contains a bell-type bell, comprising a 6 hour hammer, which strikes on a 7 hour stamp, and a minute 8 hammer which strikes on a minute 9 stamp.
  • the hammers are actuated in known manner from a ringing center mobile 10 which is driven by the spring of a barrel 11 through an intermediate mobile 12.
  • a regulator Ring centrifugal 14 is rotated from the center mobile 10 by a multiplier gear train 15, the last element of which is a driving wheel 16 which meshes with a pinion 17 of the regulator 14.
  • the elements of the centrifugal ring regulator 14 are shown in more detail in the Figures 2 to 4 .
  • the gear 17 of the regulator is made of a piece with a shaft 18 whose ends are pivotally mounted by means of stones 23 in a plate 20 and a bridge 21, to rotate about a central axis 22 of the regulator.
  • a circular plate 24 is fixed to the pinion 17 and extends in a plane perpendicular to the axis 22.
  • a regulator body 25 is fixed to the plate 20 by screws 26 and has a cylindrical inner surface 27 whose diameter is slightly greater than the outer diameter of the plate 24. Note that the body 25 could be formed by any fixed part of the watch, such as according to the patent CH 604 237 cited above.
  • the figures 2 and 3 represent the rotating part of the centrifugal regulator shown in figure 2 .
  • Two identical flyweights 30 are mounted movably on the turntable 24. The latter is provided with two driving studs 31 occupying diametrically opposite positions on the plate and each having a cylindrical drum 32 which emerges from the upper face 33 of the tray. Each stud 31 is engaged with a lateral play 34 in a cylindrical hole 35 of the corresponding flyweight 30, the diameter of the hole 35 being substantially greater than that of the stud of the stud 31 to allow the flyweight to move on the plate, at the less in a radial direction thereof.
  • each weight 30 has several localized spans such as 36, while a small gap 37 is provided between the rest of its lower face and the plate 24 to prevent lubrication may stick the weight on the tray.
  • the weight is held upward by a washer 38 driven on the shaft 18.
  • a gap 39 is formed between the two weights 30 to ensure sufficient freedom of movement in the plane of the plate 24.
  • each weight has the shape a segment of a circle that covers almost half of the plateau 24.
  • Two circular rollers 40 are rotatably mounted on each weight 30, each by means of a tenon 41 driven into a corresponding hole of the weight, the tenon having an enlarged head 42.
  • Each roller 40 is disposed in a recess 43 of the weight, so as to be substantially at the same level as the center of gravity CG of the weight.
  • Each roller 40 is made of a hard material, preferably a synthetic stone such as ruby. In the example shown in the drawings, stones of the kind usually used in the bearings of the movements are used. timepiece, in particular with a concave recess 44 around their central hole to facilitate oiling, if any.
  • the rollers 40 emerge slightly at the periphery of the flyweights 30 and are intended to rest while rolling against the inner surface 27 ( figure 2 ) of the body 25 of the regulator.
  • the spacing of the respective axes of the two rollers 40 of a flyweight 30 corresponds to an angle A, which is 90 ° in the example shown, with respect to the axis 22 of the regulator.
  • the total of the amplitudes of the radial reaction forces Fr exerted on the two rollers 40 by the body 25 is greater than the amplitude of the centrifugal force FC acting at the center of gravity CG of the weight. Since the tangential reaction force Ft acting on each roller is proportional to Fr, this means that the larger the angle A, the greater the reaction torque of the regulator.
  • spacing from one another the two rollers 40 of a feeder allows either to increase the resistive torque of the regulator and thus reduce its maximum speed, or to reduce the diameter of the regulator or the mass of its weights.
  • the sliding support of the synthetic stone rollers 40 on the studs 41 which are preferably made of steel, allows high contact pressures and a high rotation speed with a moderate coefficient of friction, even without lubricant, so that the wear is almost zero at this location.
  • the rollers 40 could also be made of a suitable metal, for example cupro-beryllium.
  • the weights can be made of any sufficiently dense material, for example brass or gold.
  • the other elements of the regulator are made of materials customary in the field of watchmaking.
  • a centrifugal regulator according to the invention can be used with any type of mechanical bell.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Pinball Game Machines (AREA)
  • Friction Gearing (AREA)
  • Harvester Elements (AREA)
  • Percussion Or Vibration Massage (AREA)
  • Centrifugal Separators (AREA)

Claims (7)

  1. Zentrifugalregler eines Schlagwerkes, insbesondere für eine Uhr, mit einem Drehteller (24), der um seine Mittelachse (22) drehbar ist und zwei diametral entgegengesetzte Antriebsstifte (31) aufweist, wobei ein feststehender Körper (25) eine auf diese Achse zentrierte Umlaufinnenfläche besitzt, sowie zwei Gewichte (30), die bezüglich der Achse symmetrisch zueinander sind und jeweils an einen der Antriebsstifte eingreifen und dazu vorgesehen sind, sich unter der Wirkung der Zentrifugalkraft an die Innenfläche (27) des Körpers abzustützen, wenn der Drehteller sich dreht,
    dadurch gekennzeichnet, dass jedes Gewicht (30) sich an die Innenfläche (27) des Körpers über zumindest eine Rolle (40) abstützt, die drehbar an dem Gewicht gelagert und dazu vorgesehen ist, auf der Innenfläche abzurollen.
  2. Zentrifugalregler nach Anspruch 1, dadurch gekennzeichnet, dass jedes Gewicht (30) zwei der genannten Rollen (40) aufweist, die in Umfangsrichtung des Tellers voneinander beabstandet sind.
  3. Zentrifugalregler nach Anspruch 2, dadurch gekennzeichnet, dass jedes Gewicht (30) mit Spiel (34) zumindest in einer radialen Richtung des Tellers an dem Antriebsstift (31) gelagert ist.
  4. Zentrifugalregler nach Anspruch 2, dadurch gekennzeichnet, dass der Winkelabstand (A) der Achsen der beiden Rollen eines Gewichts bezüglich des Mittelpunkts des Tellers zumindest 70 Grad und vorzugsweise zumindest 90 Grad beträgt.
  5. Zentrifugalregler nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass jede Rolle (40) an einem zylindrischen Abschnitt eines Zapfens (41) drehbar gelagert ist, der am Teller (24) befestigt ist, wobei die Rolle aus einem härteren Material als der Zapfen und der Körper hergestellt ist.
  6. Zentrifugalregler nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass jede Rolle (40) aus synthetischem Stein, insbesondere aus synthetischem Rubin besteht.
  7. Zentrifugalregler nach Anspruch 1, dadurch gekennzeichnet, dass jeder Antriebsstift (31) einen Zylinderschaft (32) aufweist, der parallel zur Achse (22) verläuft und mit seitlichem Spiel (34) in ein Loch des entsprechenden Gewichts eingreift.
EP02079171A 2002-10-07 2002-10-07 Zentrifugalregler eines Schlagwerkes, insbesondere in einer Uhr Expired - Lifetime EP1408381B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT02079171T ATE438124T1 (de) 2002-10-07 2002-10-07 Zentrifugalregler eines schlagwerkes, insbesondere in einer uhr
DE60233141T DE60233141D1 (de) 2002-10-07 2002-10-07 Zentrifugalregler eines Schlagwerkes, insbesondere in einer Uhr
EP02079171A EP1408381B1 (de) 2002-10-07 2002-10-07 Zentrifugalregler eines Schlagwerkes, insbesondere in einer Uhr

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02079171A EP1408381B1 (de) 2002-10-07 2002-10-07 Zentrifugalregler eines Schlagwerkes, insbesondere in einer Uhr

Publications (2)

Publication Number Publication Date
EP1408381A1 EP1408381A1 (de) 2004-04-14
EP1408381B1 true EP1408381B1 (de) 2009-07-29

Family

ID=32011019

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02079171A Expired - Lifetime EP1408381B1 (de) 2002-10-07 2002-10-07 Zentrifugalregler eines Schlagwerkes, insbesondere in einer Uhr

Country Status (3)

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EP (1) EP1408381B1 (de)
AT (1) ATE438124T1 (de)
DE (1) DE60233141D1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005111742A1 (fr) 2004-04-15 2005-11-24 Montres Breguet Sa Montre comportant au moins deux tourbillons
EP1944662A1 (de) * 2007-01-15 2008-07-16 Vaucher Manufacture Fleurier SA Stundenschlagwerk

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH14178A (fr) * 1897-03-24 1897-10-15 Henri Sandoz Régulateur de vitesse pour montres à répétition
CH15833A (fr) * 1898-01-07 1898-07-31 Ditisheim & Cie Frein-régulateur pour mécanismes d'horlogerie
CH25658A (fr) * 1902-04-02 1903-05-31 Mathey Tissot & Co E Régulateur de vitesse du petit rouage des montres à répétition
CH31197A (fr) * 1904-07-29 1905-03-15 Le Coultre & Cie Modérateur silencieux pour le petit rouage de montres à répétition

Also Published As

Publication number Publication date
ATE438124T1 (de) 2009-08-15
EP1408381A1 (de) 2004-04-14
DE60233141D1 (de) 2009-09-10

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