EP1837718A1 - Hemmungsvorrichtung für Uhrwerke - Google Patents

Hemmungsvorrichtung für Uhrwerke Download PDF

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Publication number
EP1837718A1
EP1837718A1 EP06005703A EP06005703A EP1837718A1 EP 1837718 A1 EP1837718 A1 EP 1837718A1 EP 06005703 A EP06005703 A EP 06005703A EP 06005703 A EP06005703 A EP 06005703A EP 1837718 A1 EP1837718 A1 EP 1837718A1
Authority
EP
European Patent Office
Prior art keywords
blocker
rest
ellipse
exhaust device
escape wheel
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
EP06005703A
Other languages
English (en)
French (fr)
Other versions
EP1837718B1 (de
Inventor
David Candaux
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 EP20060005703 priority Critical patent/EP1837718B1/de
Publication of EP1837718A1 publication Critical patent/EP1837718A1/de
Application granted granted Critical
Publication of EP1837718B1 publication Critical patent/EP1837718B1/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
    • 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
    • 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
    • G04B15/00—Escapements
    • G04B15/06—Free escapements

Definitions

  • the subject of the present invention is an escapement device for a watch movement, in particular for a wristwatch or a pocket watch, the clockwork movement possibly comprising a tourbillon or not.
  • the object of the invention is to provide a simple manufacturing exhaust device, to reduce shocks and friction to increase the efficiency and reduce or eliminate the lubrication of the device.
  • the exhaust system according to the present invention is distinguished by the features listed in claim 1.
  • the axis of balance 3 carries a plate 4 provided with a pulse lift 5 extending substantially radially and whose end protrudes from the periphery of the plate 4.
  • This plate 4 further comprises near its periphery a release pin 6 extending perpendicularly to the plane of the plate 4 in the direction opposite to the balance 1.
  • a spiral spring 7 is fixed by its inner end to the balance shaft 3 and its outer end 7a to a stud 8 fixed on a bridge or the plate of the movement (not shown) or on the cage of a whirlwind if exhaust is mounted in a whirlpool.
  • the axis of the balance 3 is pivoted between a bridge and the plate of the movement or between the cage and a bridge of a tourbillon.
  • the exhaust device further comprises an escape wheel 11 and its pinion 12 pivoted between the plate and a bridge of the movement and positioned such that each tooth of the escape wheel 11 can be placed on the path of the pulse lift 5 to give the pulses to the balance 1.
  • the exhaust device further comprises a blocker 13 pivoted between the movement plate and a star bridge 14.
  • This blocker 13 comprises a release lever 15 extending towards the plate 4 and can be actuated by the release pin 6 of this tray 4.
  • the blocker 13 also comprises a rest ellipse 16 having the general shape of a cylinder provided with a plate 16a and extending perpendicularly to the plane of the blocker 13, the ellipse comprises a first part or end extending in the opposite direction the pendulum and a second portion or end extending in the direction of the pendulum.
  • the rest ellipse 16 is constructed of sapphire.
  • the ends of this rest ellipse are pivoted in fixed bearings 17, one carried by the star bridge 14 and the other by the platen of the movement.
  • the star bridge 14 comprises two stops 18, 18a making it possible to limit the angular displacements of the blocker 13.
  • the exhaust device further comprises a positioning arm 19 whose free end cooperates with the plane face 16a of the rest ellipse 16 and more particularly with the first part or end of the rest ellipse, to hold the blocker 13 in neutral position of rest.
  • This positioning arm 19 is pivoted on the platen of the movement and subjected to the action of a spiral return spring 20 tending to apply its free end against the flat face 16a of the rest ellipse 16.
  • the restoring force of this spiral return spring 20 is weak, just sufficient to replace the blocker 13 in its neutral position after it has been angularly displaced by the release pin 10 of the plate 4 coming into contact with the release lever 15 of the blocker during the pendulum oscillations 1.
  • Figures 2a and 2b illustrate the exhaust device at the moment when the balance 1 having completed its upward stroke, reverses its direction of rotation and begins its downward stroke for which it moves in the counterclockwise direction following the arrow F1. While the rocker 1 describes the additional arc in the downward period of the alternation, the escape wheel 11 is stopped by one of its teeth which is pressed against the cylindrical portion of the rest ellipse 16 of the blocker 13 and more particularly against the second part or end of the rest ellipse which is in its neutral rest position. The blocker 13 is held in this rest position by the arm 19 whose free end is applied against the flat face 16a of the rest ellipse 16 of the blocker 13.
  • This arm 19 exerts a pressure, the lowest possible, thanks to the hairspring 20 fixed on the axis of rotation of the arm 19.
  • the torque exerted by this spiral spring 20 on the arm 19 is adjustable with a mobile peg holder on the plate to which is fixed the other end of the spring 19.
  • the release pin 6 is integral with the balance 1 by its driving on the plate 4, perpendicular to the pulse lift 5 and angularly offset relative thereto.
  • the pendulum 1 thus moves in the counter-clockwise direction to the so-called "lost blow” phase illustrated in FIGS. 3a, 3b and 4a, 4b.
  • the release pin 6 touches the end of the release lever 15 of the blocker 13 which causes a slight movement of the blocker 13 only in the clockwise direction.
  • the escape wheel 11 does not undergo any geometric recoil during this phase of the "lost blow” because it rests with one of its teeth on the cylindrical portion of the rest ellipse 16 of the blocker 13 which is concentric with the axis This causes only a very low friction between a tooth of the escape wheel 11 and the rest ellipse 16 of the blocker 13.
  • the pendulum 1 continues its downward movement then stops and begins its ascending phase clockwise along the arrow F2 to the position shown in Figures 5a and 5b.
  • the release pin 6 comes into contact with the release lever 15 of the blocker 13 which has repositioned in the rest position under the action of the arm 19.
  • the release pin 6 moves the blocker counterclockwise and simultaneously lifting pulse 5 is placed on the path of a tooth of the escape wheel 11.
  • the stroke in the counterclockwise direction of the blocker 13 is stopped by the abutment 18a of the star bridge 14 and at this moment the tooth of the escape wheel 11 leaves the cylindrical wall 16 of the rest ellipse 16 which is thus released (FIGS. 6a, 6b and 7a, 7b).
  • the escape wheel 11 is thus released thanks to the flat face 16a of the rest ellipse 16 of the blocker.
  • another tooth of the escape wheel 11 collides with the pulse lift 5 of the plate 4 driven on the axis 3 of the balance 1 (FIG. 8).
  • the arm 19 of the blocker 13 reposition the blocker 13 in the neutral rest position to allow the next tooth, the one that gave the impulse, of the escape wheel 11 to stop against the cylindrical peripheral surface. of the rest ellipse 16 of the blocker 13.
  • this escapement device is a free escapement since it leaves the balance with complete freedom to traverse the additional arcs with the functions of the escapement. It is also a direct impulse escapement because it does not include an intermediate energy transmission system as is the case for anchor escapements.
  • the four bodies of this exhaust system are:
  • the plate 4 integral with the balance 1, with the pulse pallet 5 and the release pin 6.
  • the impetus given by the escape wheel 11 is directly transmitted to the balance 1. This makes it possible to reduce shocks and friction and thus to increase the efficiency. This escapement also has the distinction of transmitting only one pulse per complete cycle (two alternations).
  • the peripheral surface of the rest ellipse 16 could have various shapes provided that it comprises a first portion to stop the teeth of the escape wheel when the blocker 13 is in certain positions and a second portion to release the teeth of the escape wheel when the blocker 13 is in other positions as described above.
  • the first portion is rounded and it is all the more preferable that it be cylindrical so that the friction between a tooth of the escape wheel and the ellipse when the blocker rotates is very low.
  • the second portion of the peripheral surface of the rest ellipse 16 is flat.
  • the peripheral surface of the first end of the ellipse must include a portion (preferably flat once more) to properly cooperate with the positioning arm 19 in the manner described above.
  • FIGS. 10 to 13 represent, by way of example, the exhaust device described above mounted in a tourbillon cage whose center of rotation lies on the axis of the blocker 13 and not on the axis of the balance 1.
  • Figure 11 is a section of the vortex showing the principle of inverted pivoting of the blocker on a fixed pivot.
  • Figure 12 is a top view of the tourbillon cage while Figure 13 is a bottom view where we see the drive of the cage performed by an internal toothing performed on the second fixed wheel 21.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Operated Clutches (AREA)
EP20060005703 2006-03-21 2006-03-21 Hemmungsvorrichtung für Uhrwerke Expired - Lifetime EP1837718B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20060005703 EP1837718B1 (de) 2006-03-21 2006-03-21 Hemmungsvorrichtung für Uhrwerke

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20060005703 EP1837718B1 (de) 2006-03-21 2006-03-21 Hemmungsvorrichtung für Uhrwerke

Publications (2)

Publication Number Publication Date
EP1837718A1 true EP1837718A1 (de) 2007-09-26
EP1837718B1 EP1837718B1 (de) 2014-05-28

Family

ID=37564114

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20060005703 Expired - Lifetime EP1837718B1 (de) 2006-03-21 2006-03-21 Hemmungsvorrichtung für Uhrwerke

Country Status (1)

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EP (1) EP1837718B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010190855A (ja) * 2009-02-20 2010-09-02 Seiko Instruments Inc デテント脱進機並びにこれを用いた調速・脱進機及び時計
FR3008200A1 (fr) * 2013-07-08 2015-01-09 Daniel Galazzo Echappement pour piece d'horlogerie avec tourbillon sans cage

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US172165A (en) * 1876-01-11 Improvement in chronometer-escapements for watches
CH258A (fr) * 1888-12-27 1889-02-20 Clemence Freres Echappement à détente perfectionné
CH26017A (de) * 1902-04-12 1903-07-15 Krupp Gmbh Einrichtung an Geschützen zum Überführen von Munition von einem Munitionswagen in die Ladeaxe des Geschützes
CH58715A (fr) * 1912-01-25 1913-04-01 Theodore Jequier Echappement pour pièces d'horlogerie à balancier
EP0018796A2 (de) * 1979-04-30 1980-11-12 George Daniels Uhren, Pendeluhren, Chronometer und Hemmungen dafür

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US172165A (en) * 1876-01-11 Improvement in chronometer-escapements for watches
CH258A (fr) * 1888-12-27 1889-02-20 Clemence Freres Echappement à détente perfectionné
CH26017A (de) * 1902-04-12 1903-07-15 Krupp Gmbh Einrichtung an Geschützen zum Überführen von Munition von einem Munitionswagen in die Ladeaxe des Geschützes
CH58715A (fr) * 1912-01-25 1913-04-01 Theodore Jequier Echappement pour pièces d'horlogerie à balancier
EP0018796A2 (de) * 1979-04-30 1980-11-12 George Daniels Uhren, Pendeluhren, Chronometer und Hemmungen dafür

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
BREGUET A-L: "2001 : L'ANNEE DU TOURBILLON", LA FRANCE HORLOGERE, SOCIETE MILLOT ET CIE. BESANCON, FR, no. 621, 1 March 2001 (2001-03-01), pages 56 - 57, XP001003398, ISSN: 0015-9573 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010190855A (ja) * 2009-02-20 2010-09-02 Seiko Instruments Inc デテント脱進機並びにこれを用いた調速・脱進機及び時計
FR3008200A1 (fr) * 2013-07-08 2015-01-09 Daniel Galazzo Echappement pour piece d'horlogerie avec tourbillon sans cage
WO2015004336A3 (fr) * 2013-07-08 2016-01-14 Galazzo Daniel Echappement pour pièce d'horlogerie avec tourbillon sans cage

Also Published As

Publication number Publication date
EP1837718B1 (de) 2014-05-28

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