EP3754433A1 - Einheit für ankerhemmung eines uhrwerkmechanismus - Google Patents

Einheit für ankerhemmung eines uhrwerkmechanismus Download PDF

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Publication number
EP3754433A1
EP3754433A1 EP20180912.6A EP20180912A EP3754433A1 EP 3754433 A1 EP3754433 A1 EP 3754433A1 EP 20180912 A EP20180912 A EP 20180912A EP 3754433 A1 EP3754433 A1 EP 3754433A1
Authority
EP
European Patent Office
Prior art keywords
anchor
plate
wall
pin
fork
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
EP20180912.6A
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English (en)
French (fr)
Inventor
Giulio Papi
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.)
Manufacture dHorlogerie Audemars Piguet SA
Original Assignee
Manufacture dHorlogerie Audemars Piguet 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 Manufacture dHorlogerie Audemars Piguet SA filed Critical Manufacture dHorlogerie Audemars Piguet SA
Publication of EP3754433A1 publication Critical patent/EP3754433A1/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
    • G04B15/00—Escapements
    • G04B15/14—Component parts or constructional details, e.g. construction of the lever or the escape wheel
    • 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
    • G04B15/08—Lever escapements

Definitions

  • the present invention relates to an assembly for an anchor escapement, comprising an anchor, a plate and a pin integral with the plate, intended to cooperate with each other and with an escape wheel, in a service position, while presenting a safety against overturning,
  • the anchor being devoid of stinger and comprising, on the one hand, an inlet pallet and an outlet pallet, intended to cooperate alternately with the escape wheel and, on the other hand, a fork intended to cooperate with the pin and the plate and comprising first and second horns delimiting a fork entry
  • the plate being at least partially located at the same level as the pin, depending on the direction of the thickness of the plate, the plate having an anti-overturning wall of generally cylindrical shape in which a notch is formed, in a region adjacent to the ankle, the anchor, the plate and the ankle being shaped and dimensioned such so that, in the service position, the anti-overturning wall is capable of defining a stop for the first and second horns.
  • escapements of this type have not established themselves on the market and traditional Swiss lever escapements, including a stinger, are by far the most widespread, and have been for several tens of years. years.
  • a main aim of the present invention is to provide an assembly allowing the production of an escapement with safe operation and having a reduced size with reference to conventional exhausts.
  • the present invention relates more particularly to an assembly of the type indicated above, characterized in that the anchor, the plate and the peg are further shaped and dimensioned such that, in the service position, each horns is capable of penetrating inside the notch exclusively when the ankle is at least partially located in the entrance of the fork.
  • the only configuration of the assembly according to the invention in which a horn can enter the notch of the plate, during operation, is that in which this horn must precisely enter the notch to allow the normal pivoting of the fork on either side of neutral. An exhaust of reduced thickness is thus obtained, the operation of which is completely safe.
  • each of the horns of the fork has an internal wall delimiting the entrance to the fork and an external wall shaped and dimensioned such that in a rebat situation, the distance between the point of contact of the ankle on the outer wall of the horn concerned and the end of the outer wall closest to the inner wall is greater than the distance between the ankle and that of the junctions between the anti-overturning wall and the notch which is closest to the horn concerned.
  • each horn has a shape and dimensioning such that it cannot enter the notch of the plate in a rebat situation but can only enter it when the peg is at least partially located in the fork. .
  • the anchor comprising a rod connecting the input and output pallets to the fork and capable of pivoting between two extreme positions, in the service position, by defining a maximum displacement angle of the fork.
  • anchor provision can advantageously be made for the outer wall of each of the horns to have, from its end closest to the inner wall, a first portion defining a safety surface and having an average angle, with reference to the rod such as the surface safety device is substantially tangent to the anti-overturning wall when it is situated opposite the latter, then a second portion having an angle of the order of 0 to 60 ° with reference to the rod, preferably less than 45 ° , for example 30 °, and extending at least to the point of contact of the ankle on the external wall in a rebat situation.
  • the present invention also relates to an escapement comprising an assembly meeting the characteristics set out above associated with an escape wheel.
  • this escapement can be intended to be arranged, in the service position, such that the distance between the axes of rotation of the anchor and of the plate is at least equal to twice that of the distance between the axes of rotation of the anchor and the escape wheel.
  • the escapement prefferably, provision can be made for the escapement to be intended to be arranged, in the service position, such that the axes of rotation of the escape wheel, anchor and plate are coplanar.
  • the present invention also relates to a horological movement comprising an escapement meeting the above characteristics, and possibly comprising limiting pins arranged on either side of the anchor to define its maximum travel, as well as a timepiece. provided with such a watch movement.
  • the figures 1a, 1b and 2a, 2b represent simplified views, on the one hand from above and, on the other hand, partial and side views of a range for horological movement, respectively, of conventional Swiss anchor type and according to a preferred embodiment of the present invention.
  • a comparative examination of these different views makes it possible to highlight the structural characteristics which differentiate the set of components according to the present invention from a set of components according to the state of the art which is the most widespread on the market.
  • the Swiss lever escapement 100 illustrated on figures 1a and 2a comprises an escape wheel 102 integral with an escape pinion 104 and arranged to cooperate with the input 106 and output 108 vanes of an anchor 110, intended to be pivoted on its axis 112.
  • a rod 114 connects the pallets 106, 108 to a fork whose entrance is delimited by two horns 116.
  • the fork is surmounted by a stinger 118 intended to ensure safety against overturning.
  • Input 120 and output 122 limiting pins are typically provided to limit the amplitude of rotation of anchor 110.
  • the anchor is intended to cooperate with a double plate, in particular to retransmit part of the energy received. from the escape wheel to the balance (not visible) to maintain the oscillations.
  • the double plate comprises, for this purpose, a small plate 124 whose cylindrical periphery defines an anti-overturning wall by its cooperation with the dart 118, this wall being provided with a notch 126 intended to allow the rotation of the anchor 110 on either side of the neutral point, leaving sufficient space to define a passage for the dart 118.
  • the small plate 124 is generally secured to a large plate 128 by means of a barrel 130, the large plate 128 carrying a pin 132 intended to cooperate with the fork of the anchor 110 in order, on the one hand, to trigger a rotation of the anchor 110 at each alternation by exerting an adequate force on a first horn 116 and, on the other hand , receive a pulse from the other of the horns 116 before coming out of the fork.
  • FIG. 1 An exhaust 1 according to a preferred embodiment of the invention is illustrated on figures 1b and 2b , by way of nonlimiting example, of which it appears that this exhaust comprises an escape wheel 2 integral with an exhaust pinion 4 and arranged to cooperate with the inlet 6 and outlet 8 vanes of an anchor 10, intended to be pivoted on its axis 12.
  • a rod 14 connects the pallets 6, 8 to a fork, the entrance of which is delimited by two horns 16, 18.
  • the horns 16, 18, in addition to their conventional function, are intended here to provide a safety against overturning.
  • Input 20 and output 22 limiting pins are typically provided to limit the amplitude of rotation of anchor 10.
  • the anchor 10 is intended to cooperate with a plate 24 of reduced thickness with reference to the conventional double plate.
  • the plate 24 has a cylindrical periphery defining an anti-overturning wall by its cooperation with the horns 16 and 18, this wall being provided with a notch 26 intended to allow the rotation of the anchor 10 on either side of the point dead, leaving sufficient space to define a passage for the horns 16, 18.
  • the plate 24 carries a small radial protuberance 28 defining a support for an ankle 32 intended to cooperate with the fork of the anchor 10, as will emerge more clearly from the explanations which will follow, in relation to the description of figures 3a to 3n .
  • the anchor 10 is devoid of stinger makes it possible to reduce its thickness as well as that of the plate, as emerges from a comparative examination of the figures 2a and 2b .
  • the figure 3a represents the assembly for escapement while the balance (not visible) is in the phase of additional descending angle, the anchor 10 and the escape wheel being at rest.
  • the rod 14 of the anchor 10 bears against the output limiting pin 22 and the outlet pallet 8 of the anchor 10 bears against a tooth of the escape wheel 2.
  • the figure 3b shows a configuration in which the peg 32 of the plate 24 is about to enter the fork while it is still located opposite the horn 18.
  • the horn 16 is partially located opposite the notch 26 of the plate 24 but it still remains close to the anti-overturning wall and thereby maintains the safety against the overturning of the anchor 10.
  • the figures 3c and 3d represent the release phase during which the pin 32 comes into contact with the horn 16 and acts on it to rotate the anchor 10 which then leaves its stop position. At the same time, the anchor 10 begins to undergo an impulse from the escape wheel 2, in a conventional manner.
  • the pulse phase continues until the configuration of the figure 3g , passing through neutral, illustrated on figure 3e , the anchor 10 transmitting to the balance a fraction of the energy received from the escape wheel 2, by the intermediary of the pin 32 of the plate 24 between the neutral point and the end of the impulse phase shown on the figure 3g .
  • the anchor 10 is blocked against the entry limiting pin 20 by the pull exerted by the escape wheel 2 on the entry pallet 6.
  • the figure 3j represents the configuration corresponding to the end of the following additional descending angle phase, once the pin 32 has already entered the entry of the fork and when it comes into contact with the horn 18 to begin the release phase next, in the opposite direction.
  • the pin 32 being located in the entrance of the fork, the notch 26 of the plate is positioned opposite the horn 18 to allow the pivoting of the anchor 10 in the anti-clockwise direction in the view of the figure 3j .
  • the figures 3k, 3l and 3m represent respectively the continuation of the release phase, the passage through the neutral point, then the next impulse phase.
  • FIG 3n illustrates the start of the next additional upward angle phase, with the next additional downward angle phase corresponding again to the illustration in figure 3a .
  • the configuration shown on figure 3n corresponds to the moment when the pin 32 has just left the fork and it can be seen that the horn 16 is then again located in the immediate vicinity of the anti-overturning wall of the plate 24.
  • the figures 4a, 4b and 4c present three different types of escapements in a rebate situation and their comparative examination makes it possible to highlight certain features of the present invention.
  • the figure 4a illustrates the rebate situation for the front escapement as described in the patent CH44855 cited above, and allows to see the limits of this exhaust in terms of operating safety.
  • this escapement presented a high risk of blocking in the event of rebat insofar as the horn 216 of the fork, against which the pin 232 abuts in the rebat situation, is liable to penetrate the fork. 'inside the notch 226 of the plate 224 and to block the rotation of the plate 224 and therefore the operation of the corresponding watch movement.
  • the figure 4b presents the rebat situation in the case of the conventional Swiss lever escapement, in which the lugs 116 and the dart 118 are shaped, with respect to the plate 124 and its notch 126, such that the lugs 116 cannot enter the notch 126 in a rebat situation, due to the stop position of the dart 118 against the anti-overturning wall of the plate 124.
  • the fork of the anchor 10 has a shape substantially different from the typical shape of a conventional anchor fork, in order to optimize the nature of its interaction with the peripheral wall of the plate 24.
  • each of the horns 16, 18 of the fork has an internal wall 36 delimiting the entrance to the fork and an external wall 38 shaped and dimensioned such that in a rebat situation, the distance between the point of contact of the fork. the pin 32 on the outer wall 38 of the horn concerned (the horn 16 in the configuration illustrated on the figure 4c ) and the end 40 of the outer wall 38 closest to the inner wall 36 is greater than the distance between the pin 32 and that of the junctions 42 between the anti-overturning wall and the notch 26 which is closest to the horn concerned. Thanks to such a geometric arrangement, the horns 16, 18 cannot enter the notch 26 in a rebat situation, as was the case with the prior art mentioned above, which is clear from a comparative examination. illustrations of figures 4a and 4c .
  • each of the horns 16, 18 has, from its end 40 closest to the inner wall 36, a first portion 38a defining a safety surface and having an average angle, in reference to the rod 14 of the anchor 10, such that the safety surface is substantially tangent to the anti-overturning wall when it is located opposite the latter (that is to say essentially when the anchor 10 is in the rest phase), then a second portion 38b having an angle of the order of 0 to 60 ° with reference to the rod 14, preferably less than 45 °, for example 30 °, and extending at least up to 'at the point of contact of the ankle 32 on the outer wall 38 in the rebat situation.
  • the first portion 38a capable of coming into contact with the anti-overturning wall of the plate 24 offers a contact surface with the latter inducing limited friction.
  • this geometry defines horns of greater width than that of the horns of the prior art, and therefore less fragile and less likely to be damaged in the event of an impact.
  • the orientation of the second portion 38b makes it possible to further increase the width of the horns 16, 18 not only to make them more solid but also to ensure that the geometric condition stated above, in relation to the rebat situation, is fully met , that is to say that the distance between the point of contact of the ankle 32 on a horn in rebat situation and the end 40 of the outer wall 38 of this horn is much greater than the distance between the ankle 32 and the junction 42 closest to the relevant horn.
  • the assembly according to the present invention offers a level of safety equivalent to that of the assembly for escapements of the Swiss lever type, while having a reduced thickness with reference to the latter.
  • the release and impulse functions performed by the internal wall 36 of the fork are located at the same level as the anti-overturning function performed by the external wall 38 of the fork whereas these functions are performed at different levels. in a traditional lever escapement with dart.
  • FIG. 4b A comparative examination of figures 4b and 4c furthermore enables an additional advantage of the present invention to be observed with reference to a conventional Swiss lever escapement. It appears on the figure 4b that the elongation of the balance at the time of rebat is of the order of 330 to 340 degrees (360 ° - ⁇ on the figure 4b ) while it may be greater than 360 degrees in the case of the invention, as illustrated in figure 4c , from which it emerges that the elongation is here 360 ° + ⁇ ( ⁇ typically exhibiting a value of the order of a few degrees), which is more favorable from the point of view of the isochronism of the corresponding oscillator.
  • the ankle can be made integral with the plate by any suitable means.
  • the demand EP 2924517 which describes such a configuration. Provision can also be made for the ankle to be carried directly by the balance, for example, without departing from the scope of the invention.
  • the axes of rotation of the escape wheel, of the anchor and of the plate may or may not be coplanar without impacting the implementation of the invention.
  • the figure 5 shows a schematic top view of a plurality of anchors according to different respective embodiments of the present invention, and provides an overview of the flexibility available to those skilled in the art to design an anchor meeting the characteristics of the invention. 'invention.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Rollers For Roller Conveyors For Transfer (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
  • Vibration Dampers (AREA)
  • Micromachines (AREA)
  • Table Equipment (AREA)
EP20180912.6A 2019-06-19 2020-06-18 Einheit für ankerhemmung eines uhrwerkmechanismus Pending EP3754433A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH00832/19A CH716337A1 (fr) 2019-06-19 2019-06-19 Ensemble pour échappement à ancre de mouvement horloger.

Publications (1)

Publication Number Publication Date
EP3754433A1 true EP3754433A1 (de) 2020-12-23

Family

ID=67551035

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20180912.6A Pending EP3754433A1 (de) 2019-06-19 2020-06-18 Einheit für ankerhemmung eines uhrwerkmechanismus

Country Status (5)

Country Link
US (1) US11550262B2 (de)
EP (1) EP3754433A1 (de)
JP (1) JP7537920B2 (de)
CN (1) CN112114508B (de)
CH (1) CH716337A1 (de)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH2209A (de) * 1890-04-30 1890-12-15 Ludwig Marckwald Freie Uhrhemmung mit getrennten Ruhe- und Impulszähnen
CH44855A (fr) 1909-01-01 1909-09-16 Edmond Debely Echappement à ancre simplifié pour pièces d'horlogerie à balancier
DE867671C (de) * 1950-12-05 1953-02-19 Ebauches Sa Ankerhemmung
CH567293B5 (fr) * 1972-07-19 1975-09-30 Far Fab Assortiments Reunies Echappament à ancre pour pièce d'horlogerie
JP2002228767A (ja) * 2001-01-09 2002-08-14 Ulysse Nardin Sa 時計の脱進機
CH699273B1 (fr) * 2006-06-30 2010-02-15 Patek Philippe Sa Ancre d'échappement.
US20100208555A1 (en) * 2009-02-17 2010-08-19 Hiraoka Masashi Escapement governor, mechanical watch, pallet fork (incomplete) manufacturing method, and roller manufacturing method
EP2924517A1 (de) 2014-03-24 2015-09-30 Nivarox-FAR S.A. Monoblock-Verbundteil, bestehend aus Dübel und kleiner Platte

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB574229A (en) * 1943-11-13 1945-12-28 Thomas Alfred Gummersall A silent lever escapement
GB679416A (en) * 1950-06-22 1952-09-17 Far Fab Assortiments Reunies Lever escapement
DE1244665B (de) 1962-11-03 1967-07-13 United States Time Corp Zeigerwerksantrieb
CH1574569A4 (de) * 1969-10-22 1971-03-31
CH599585B5 (de) * 1975-08-05 1978-05-31 Ebauchesfabrik Eta Ag
EP1041459B1 (de) 1999-03-31 2002-09-18 Ulysse Nardin S.A. Hemmung für Zeitmesser
ATE363673T1 (de) * 2003-12-04 2007-06-15 Montres Breguet Sa Chronometerhemmung für armbanduhren
EP2466395A1 (de) * 2010-12-14 2012-06-20 Chopard Technologies SA Anker und Hemmung, die mit einem solchen Anker ausgestattet ist
CH706532B1 (fr) * 2012-11-26 2013-11-29 Detra Sa Zi Echappement à ancre pour pièce d'horlogerie.
EP2863273B1 (de) * 2013-10-16 2016-01-13 Montres Breguet SA Hemmungsmechanismus für Uhrwerk einer Armbanduhr
EP3070537A1 (de) * 2015-03-18 2016-09-21 L. Leroy S.A. Zeitbasiseinheit, die eine hemmung mit direktimpuls und konstanter kraft umfasst

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH2209A (de) * 1890-04-30 1890-12-15 Ludwig Marckwald Freie Uhrhemmung mit getrennten Ruhe- und Impulszähnen
CH44855A (fr) 1909-01-01 1909-09-16 Edmond Debely Echappement à ancre simplifié pour pièces d'horlogerie à balancier
DE867671C (de) * 1950-12-05 1953-02-19 Ebauches Sa Ankerhemmung
CH567293B5 (fr) * 1972-07-19 1975-09-30 Far Fab Assortiments Reunies Echappament à ancre pour pièce d'horlogerie
JP2002228767A (ja) * 2001-01-09 2002-08-14 Ulysse Nardin Sa 時計の脱進機
CH699273B1 (fr) * 2006-06-30 2010-02-15 Patek Philippe Sa Ancre d'échappement.
US20100208555A1 (en) * 2009-02-17 2010-08-19 Hiraoka Masashi Escapement governor, mechanical watch, pallet fork (incomplete) manufacturing method, and roller manufacturing method
EP2924517A1 (de) 2014-03-24 2015-09-30 Nivarox-FAR S.A. Monoblock-Verbundteil, bestehend aus Dübel und kleiner Platte

Also Published As

Publication number Publication date
US20200401083A1 (en) 2020-12-24
US11550262B2 (en) 2023-01-10
JP2021001880A (ja) 2021-01-07
CN112114508A (zh) 2020-12-22
JP7537920B2 (ja) 2024-08-21
CH716337A1 (fr) 2020-12-30
CN112114508B (zh) 2023-07-25

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