EP3405839A1 - Coup-perdu-hemmungsmechanismus - Google Patents

Coup-perdu-hemmungsmechanismus

Info

Publication number
EP3405839A1
EP3405839A1 EP16805457.5A EP16805457A EP3405839A1 EP 3405839 A1 EP3405839 A1 EP 3405839A1 EP 16805457 A EP16805457 A EP 16805457A EP 3405839 A1 EP3405839 A1 EP 3405839A1
Authority
EP
European Patent Office
Prior art keywords
wheel
mechanism according
trigger
exhaust mechanism
trigger 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
EP16805457.5A
Other languages
English (en)
French (fr)
Other versions
EP3405839B1 (de
Inventor
Dominique Renaud
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.)
Freymond Eric
Original Assignee
Dominique Renaud 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 Dominique Renaud SA filed Critical Dominique Renaud SA
Publication of EP3405839A1 publication Critical patent/EP3405839A1/de
Application granted granted Critical
Publication of EP3405839B1 publication Critical patent/EP3405839B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • G04B17/04—Oscillators acting by spring tension
    • G04B17/06—Oscillators with hairsprings, e.g. balance
    • G04B17/063—Balance construction
    • 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 present invention relates to the field of watchmaking. It concerns, more particularly, an escape mechanism comprising
  • an escape wheel intended to receive energy from an energy source in order to rotate it, and to directly supply a parcel of energy to a balance to maintain its oscillations
  • a locking member for cooperating with the escape wheel to block its rotation.
  • the lost-shot escapement family proposes not to transmit impulse to the pendulum at each of its alternations. Escapement exhausts are probably the best known escapement with lost strokes, with a blow lost by oscillation, an impulse every two alternations.
  • the quality factor of the balance is particularly high.
  • the present invention aims to provide a new type of escapement strokes, can be used with an oscillator having a high quality factor, but which can also be used with a conventional oscillator. Disclosure of the invention
  • the invention relates to an escape mechanism as defined in the claims.
  • FIG. 1 is an overall view of a first embodiment of the invention
  • FIGS. 2 to 6 are chronological views of successive phases of the mechanism of FIG. 1, during its operation,
  • FIGS. 7, 8 and 9 propose additional embodiments of the invention, the gray zones schematizing the displacements of certain parts or elements, and
  • FIG. 1 shows an escape mechanism according to a first embodiment of the invention.
  • the function of the escapement is to count and maintain the oscillations of the regulating member, in this case a rocker 10, associated with a return spring, of spiral or other type.
  • the exhaust mechanism comprises an escape wheel 12 for receiving energy from a power source, a barrel spring for example.
  • the energy is provided in the form of a rotational torque tending to turn the escapement wheel 12 into rotation.
  • the exhaust mechanism according to the invention is a direct exhaust and the escape wheel 12 is arranged to directly supply a parcel of energy to the beam 10, cooperating with an anchor 14 or an ellipse integral with the beam 10.
  • the exhaust mechanism according to the invention further comprises a locking member 16 for cooperating with the escape wheel 12 for block its rotation. As will be understood later, this rotation is intermittently blocked, which momentarily releases the torque provided by the energy source.
  • the locking member 16 is an intermediate piece, rocker type, comprising a pallet 18 to block the rotation of the escape wheel 12.
  • the rocker is held elastically against a stop 20 under the action of a spring 21, in a waiting position. In this position, the rest pallet 18 is in the race of the teeth of the escape wheel 12 which, under the action of the torque transmitted by the energy source, comes to rest on the pallet of rest
  • the escape wheel 12 can be active on different levels.
  • the escape wheel 12 has arms 12a defining a first plane and at the end of which are arranged the teeth 12b, arranged in a different plane.
  • the arms 12a of the escape wheel 12 are located in the plane of the pin 14 of the rocker 10 and the teeth 12b in the plane of the locking member 16.
  • the escapement mechanism according to the invention further comprises a trigger wheel 22 rotatably mounted and arranged to cooperate directly or indirectly with the exhaust wheel 12, in order to release it.
  • the axis of the trigger wheel is distinct from the axis of the balance.
  • the trigger wheel 22 is mounted coaxially and rotatably connected to a trigger cam 24 intended to cooperate periodically with the intermediate piece, via a release pallet 26 that includes the intermediate piece.
  • the trip cam 24 comprises teeth (in this case 3), arranged to cooperate with the release pallet 26 and cause the clearance of the escape wheel 12 of the pallet rest 18.
  • the trigger wheel 22 is mounted free to rotate on its axis. It is positioned by a jumper 28, which also makes it possible to regulate the rotation by steps of the triggering wheel 22.
  • the exhaust mechanism comprises an elastic pawl 30 to be mounted on the rocker 10.
  • This pawl 30 comprises a finger 32 capable of cooperating with the trigger wheel 22 during oscillations of the balance 10.
  • a stud 34 is arranged so that the pawl 30 unclips during alternations in one direction (counterclockwise in Figure 1), and that the pawl 30 pushes the trigger wheel 22 in the other direction (alternating clockwise in Figure 1).
  • Those skilled in the art can consider various types of unidirectional drive, such as ratchets of various shapes or a pin shaped to exercise an effective motor action for the alternations in one direction.
  • the resilient pawl 30 actuates once the trigger wheel 22 to drive it in rotation.
  • This rotation is a step, under the action of the jumper 28.
  • the escape wheel 12 is released periodically, in this case, when the trigger cam 24 cooperates with the intermediate piece. The escape wheel 12 can then give a direct impulse to the balance 10.
  • the rocker 10 is in its alternation in the clockwise direction and the resilient pawl 30 pushes one of the teeth of the trigger wheel 22, which rotates without operating anything at the trigger cam 24 in this figure.
  • the jumper 28 positions the trigger wheel 22 after the drive by the resilient pawl 30.
  • the trigger cam 24 is in the position shown in Figure 3, adapted to cooperate with the release pallet 26 of the intermediate piece. Under the action of the trip cam 24, the intermediate piece pivots, which releases the escape wheel 12 of the pallet rest 18.
  • the arm 12a of the tooth 12b of the escapement wheel 12 which has just been released then gives a pulse to the rocker 10 by pushing the pin 14.
  • the intermediate piece returns to its initial position against the stop 20 under the action of the spring 21.
  • FIG. 10 proposes a variant of this first embodiment, in which the locking member 16, more particularly the rocker-type intermediate piece, is not held elastically in its waiting position, but it is brought into this position by the action of an additional arm 40, arranged to cooperate with a positioning cam integral with the trigger wheel.
  • the skilled person then provides an angle of draw between the escape wheel and the locking member to maintain the latter against the stop 20, without disrupting the rotation of the trigger wheel.
  • the trigger cam 24 which also plays the role of positioning cam, but the two functions could be realized by two distinct cams, coaxial and linked in rotation. After the release made by a first tooth of the actuating cam, another tooth cooperates with the additional arm 40 to return the latch to its standby position.
  • Figure 7 shows a second embodiment of the invention, in which the locking member 16 is disposed on the trigger wheel 22. More particularly, the locking member 16 is formed of a stud 34 mounted on the trigger wheel 22. The stud 34 is arranged to cooperate with the escape wheel 12, more particularly with its teeth, in order to lock it in rotation.
  • the trigger wheel 22 is positioned by a jumper 28 cooperating with a structure 36, called the positioning structure, that comprises the trigger wheel 22.
  • the jumper 28 and the structure 36 are configured so that that the jumper 28 returns the trigger wheel 22 to a single preset position, after actuation by the resilient pawl 30, in an oscillatory rotation.
  • the angular sector in which the jumper 28 and the positioning structure 36 cooperate is greater than the angular stroke traveled by the trigger wheel 22 when actuated by the pawl 30.
  • the trigger wheel 22 comprises one, in this case, a single tooth 22a, intended to cooperate with the elastic pawl 30 carried by the balance 10.
  • the concept of tooth more generally encompasses a driving portion, capable of receiving a driving action of the pawl 30.
  • the jumper 28 is always in cooperation with the positioning structure 36 when the pawl 30 the jumper 28 exerts a force on the positioning structure 36 which has the effect of bringing the trigger wheel 22 back to its initial position, by making a rotation in the counterclockwise direction (always with reference to Figure 7).
  • the rotation of the trigger wheel 22 was sufficient to allow the stud 34 to release the escape wheel 12.
  • the arm 12a which has just been released can then transmit a pulse to the balance 10, via the ankle 14.
  • Figures 8 and 9 propose another embodiment, derived from the embodiment of Figure 7.
  • the locking member 16 is always disposed on the trigger wheel 22.
  • the locking member 16 is this time formed by a plurality of pads 34, projecting and distributed over the trigger wheel 22.
  • the trigger wheel 22 is arranged to be rotated in a continuous direction, as in the first embodiment. It therefore has a toothing or a series of drive portions, over its entire periphery.
  • the jumper 28 ensures the positioning of the trigger wheel 22 at each step.
  • each stud 34 extends opposite a plurality of teeth of the tripping wheel, preferably forming a circular arc, advantageously positioned in a peripheral zone of the tripping wheel 22.
  • the number of pads 34 is reduced compared to Figure 8 and the angular sector covered by them is increased.
  • Those skilled in the art can adjust the ratio between the number N of teeth of the trigger wheel 22 and the number k of pads 34.
  • k is an integer> 1 and less than N / 2.
  • the skilled person can also adjust the pitch of the toothing of the trigger wheel 22, particularly in terms of intervals between two consecutive pads 34, that is to say in the areas corresponding to the clearance of the escape wheel 12, for example to have a greater pitch during this clearance and facilitate the passage of the arm 12a of the wheel exhaust 12 between the pads 34.
  • an innovative exhaust mechanism in particular in that it implements a trigger wheel 22, rotatable in either a continuous direction, or in an oscillatory rotation.
  • this escape mechanism can be used with any type of oscillator.
  • a high quality oscillator comprising a pivot as proposed in document PCT / EP2015 / 065884, filed in the name of the applicant and integrally incorporated by reference in the present application, particularly the passages describing blade pivot configurations.
  • a timepiece pivot pivotally connects a first part with a second part in a pivot axis about a pivot axis.
  • the pivot comprises a blade provided with a wire, secured to one of the first or second parts and parallel to the axis of the pivot, and a support zone secured to the other of the first and second parts and against which the wire blade is supported, the contact points of the blade and the bearing zone being substantially located on the axis of the pivot.
  • the pivot comprises means arranged to hold the blade in abutment against the bearing zone.
  • the median plane of the blade passing through the wire defines a blade plane. In normal operating mode, said means are arranged so that the first and second parts are not free to translate one with reference to the other in the direction orthogonal to the axis of the pivot contained in the plane of blade.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission Devices (AREA)
EP16805457.5A 2016-01-21 2016-12-02 Coup-perdu-hemmungsmechanismus Active EP3405839B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH00082/16A CH712052A1 (fr) 2016-01-21 2016-01-21 Mécanisme d'échappement à coups perdus.
PCT/EP2016/079688 WO2017125194A1 (fr) 2016-01-21 2016-12-02 Mecanisme d'echappement a coups perdus

Publications (2)

Publication Number Publication Date
EP3405839A1 true EP3405839A1 (de) 2018-11-28
EP3405839B1 EP3405839B1 (de) 2020-06-17

Family

ID=55963102

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16805457.5A Active EP3405839B1 (de) 2016-01-21 2016-12-02 Coup-perdu-hemmungsmechanismus

Country Status (3)

Country Link
EP (1) EP3405839B1 (de)
CH (1) CH712052A1 (de)
WO (1) WO2017125194A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4250019A1 (de) * 2022-03-21 2023-09-27 Patek Philippe SA Genève Uhr-oszillator für ein ultraflaches uhrwerk

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH715023A1 (fr) 2018-05-25 2019-11-29 Sa De La Manufacture Dhorlogerie Audemars Piguet & Cie Échappement à détente auto-démarrant et sécurisé pour pièce d'horlogerie
WO2020007619A2 (fr) * 2018-07-02 2020-01-09 Complitime Sa Mecanisme d'echappement horloger

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60334916D1 (de) * 2003-12-04 2010-12-23 Montres Breguet Sa Chronometerhemmung für Uhren
EP1770452A1 (de) * 2005-09-30 2007-04-04 Peter Baumberger Chronometerhemmung für Uhren
ATE456078T1 (de) * 2007-04-18 2010-02-15 Eta Sa Mft Horlogere Suisse Direktimpulshemmung für uhren
EP2199875B1 (de) * 2008-12-16 2014-09-24 Rolex Sa Chronometerhemmung
CH700091A8 (fr) * 2009-01-15 2010-08-31 Christophe Claret S A Échappement à détente.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4250019A1 (de) * 2022-03-21 2023-09-27 Patek Philippe SA Genève Uhr-oszillator für ein ultraflaches uhrwerk

Also Published As

Publication number Publication date
WO2017125194A1 (fr) 2017-07-27
CH712052A1 (fr) 2017-07-31
EP3405839B1 (de) 2020-06-17

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