EP3502795B1 - Repetition mechanism with tensioned chain - Google Patents

Repetition mechanism with tensioned chain Download PDF

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Publication number
EP3502795B1
EP3502795B1 EP17209994.7A EP17209994A EP3502795B1 EP 3502795 B1 EP3502795 B1 EP 3502795B1 EP 17209994 A EP17209994 A EP 17209994A EP 3502795 B1 EP3502795 B1 EP 3502795B1
Authority
EP
European Patent Office
Prior art keywords
hour
barrel
pulley
rotation
chain
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.)
Active
Application number
EP17209994.7A
Other languages
German (de)
French (fr)
Other versions
EP3502795A1 (en
Inventor
Christophe Bifrare
Daniel Matteazzi
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 EP17209994.7A priority Critical patent/EP3502795B1/en
Priority to US16/143,795 priority patent/US11073797B2/en
Priority to JP2018201535A priority patent/JP6644124B2/en
Priority to CN201811352532.6A priority patent/CN109960130B/en
Publication of EP3502795A1 publication Critical patent/EP3502795A1/en
Application granted granted Critical
Publication of EP3502795B1 publication Critical patent/EP3502795B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • G04B21/04—Hour wheels; Racks or rakes; Snails or similar control mechanisms
    • 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
    • G04B21/12—Reiterating watches or clocks
    • 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
    • G04B1/00—Driving mechanisms
    • G04B1/10—Driving mechanisms with mainspring
    • G04B1/16—Barrels; Arbors; Barrel axles
    • 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
    • G04B13/00—Gearwork
    • G04B13/02—Wheels; Pinions; Spindles; Pivots
    • G04B13/025—Wheels; Pinions; Spindles; Pivots with elastic means between the toothing and the hub of a toothed 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
    • G04B21/00—Indicating the time by acoustic means
    • G04B21/02—Regular striking mechanisms giving the full hour, half hour or quarter hour
    • G04B21/027—Regular striking mechanisms giving the full hour, half hour or quarter hour with locking 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
    • 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
    • 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
    • G04B21/14—Winding-up the striking mechanism by the clockwork; winding up the clockwork by the striking mechanism
    • 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
    • G04B23/00—Arrangements producing acoustic signals at preselected times
    • G04B23/02—Alarm clocks
    • G04B23/03—Alarm signal stop arrangements
    • 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

Definitions

  • the invention relates to the field of watchmaking. It relates, more precisely, to a repeating mechanism for a striking timepiece, the expression "timepiece” preferably designating a watch (with a bracelet or pocket), but can also designate a pendulum or even a clock. clock.
  • the repeater mechanism (commonly simply called repeater) has the function, on command of the user (or wearer) exerting pressure on a pusher at any time, to strike the time indicated at that moment by the hands of the part. watchmaking.
  • the movement of the pusher causes a forced rotation of the striking barrel, the hours piece itself being moved to its reading position against the spring.
  • the chain is hooked, by a proximal end, on the pulley and, by a distal end, on the hour piece.
  • the barrel spring tightens the chain which maintains the hour piece in its rest position.
  • the action of the wearer on a pusher causes the forced rotation of the barrel shaft, which frees the chain and therefore the hour piece, which is returned to its reading position by the hour spring.
  • the barrel spring When the wearer releases the pusher, the barrel spring, the driving torque of which exerted on the barrel shaft is greater than the resistive torque exerted by the hour spring on the hour piece, returns the latter to its rest position. Along the way, the hour has struck.
  • the reading (and tinkling) of the quarters and / or the minutes follows the same principle, with a limaquaint of the quarters (respectively minutes) and a quarter piece (respectively minutes) carrying a suitable quarter (respectively minutes) feeler. to come, in a reading position, in contact with the limaquaint of the quarters (respectively of the minutes).
  • This mechanism has an advantage in terms of size and assembly. Indeed, the chain, which makes the mechanical link between the barrel and the hour piece on the other hand, allows them to be positioned at a distance from each other. It is thus possible, regardless of the positioning of the hour piece in the middle, to place the barrel as close as possible to the pusher, which avoids having to resort to complex lever references, to the benefit of the reliability of the watch.
  • this chain mechanism has a drawback, which results from the fact that it operates in all-or-nothing mode, that is to say that, whatever the hour to strike, the wearer fully depresses the pusher. .
  • the actuation of the barrel causes the complete unwinding of the chain, whatever the angular travel of the hour piece.
  • the time to be read is 12.59 p.m. (which corresponds to the maximum stroke of the hour (where applicable) and minute parts, the chain remains tight. But in all other cases, the Angular travel of these parts is not maximum, and the residual travel of the chain (beyond that which it adopts in the reading position of the hour part) causes it to relax and float.
  • a first objective is therefore, in a chain repeating mechanism as described above, to minimize the mechanical fatigue of the moving parts (in particular of the chain).
  • a second objective is, more precisely, to smooth the forces generated in the chain by the action of the barrel spring.
  • a watch which is fitted with a middle part and such a repeating mechanism, mounted in the middle part.
  • the pulley spring is preferably a spiral spring, one internal end of which is integral with the ratchet, and one external end of which is integral with the pulley.
  • the pulley advantageously incorporates a stopper, and the ratchet incorporates a tooth which is applied against the stopper as long as the chain exerts a tensile force on the pulley, and which is angularly separated from it when the tensile force exerted is canceled. on the chain by the hour piece in the reading position.
  • the watch is advantageously equipped, in addition to the middle part and the repeating mechanism, with a push-piece mounted in translation on the middle part between a disarmed position in which the push-piece does not exert any driving torque on the rack, and a cocking position in which the pusher exerts a motor torque on the rack which drives the barrel shaft in rotation via the striking gear.
  • the striking gear for example comprises an input pinion meshing the toothed sector of the rack, and an output pinion rotatably fixed to the barrel shaft.
  • the striking gear preferably comprises a multiplier pinion rotatably secured to the input pinion and meshing with the output pinion.
  • the repeating mechanism may further include a locking pawl engaged with an asymmetric toothed ring gear carried by the barrel drum.
  • the repeating mechanism can also be provided with a return bearing on which the chain circulates between the striking barrel and the hours piece.
  • Watch 1 comprises a middle part 2 which defines an internal volume 3.
  • watch 1 is designed for wearing on the wrist, and its middle part 2 comprises for this purpose projecting lugs 4, on which a bracelet (not shown) is intended to be fixed.
  • Watch 1 comprises a clockwork movement designed to indicate at least the hours and minutes.
  • the movement comprises a plate intended to be housed in the internal volume 3 defined by the middle part 2, while being fixed thereto.
  • the movement also includes various functional components grouped into sub-assemblies.
  • a sub-assembly has a function other than displaying the hours, minutes and, where appropriate, seconds, it is called a “complication”.
  • the timepiece that is to say the watch 1 illustrated is striking, and comprises, for the purposes of striking the current time, a repeating mechanism, also called a “repeating complication” or, more simply (and as used hereafter), “repetition” 5.
  • the repetition 5 comprises, first of all, at least one snail 6 of the hours.
  • This snail 6 is mounted in rotation on an axis A1. It has a generally spiral shape and comprises on its periphery a succession of twelve angular sectors of decreasing distances to the axis A1.
  • the 6 o'clock snail is rotatably attached to a 7 o'clock star which includes twelve pointed teeth.
  • the repetition 5 also comprises a limaçon 8 of the quarters, mounted in rotation about an axis A2.
  • the snail 8 of the quarters comprises four angular sectors of decreasing distances to the axis A2, separated by smooth junction faces.
  • the repeater 5 further comprises a snail 9 of the minutes, integral in rotation with the snail 8 of the quarters and which comprises four branches notched on their periphery, separated by smooth junction faces which extend in the extension of the junction faces of the snail. 8 quarters.
  • the limaçon 8 of the quarters carries near its periphery a finger which, on each turn, engages a tooth of the star 7 of the hours in order to make the latter turn by a twelfth of a turn representing an advance of one hour.
  • the repeater 5 comprises, in the second place, an hour part 10, mounted in rotation about an axis A3 and carrying an hour feeler 11.
  • the hour part 10 comprises a toothed sector 12 which engages a regulator 13 via a gear train 14 multiplier.
  • the regulator 13 is magnetic; it comprises a rotor 15 rotatably mounted in a stator 16.
  • the rotor 15 has a limit speed of rotation, determined by a balance between the centrifugal force applied to movable ferromagnetic weights mounted on the rotor 15, and a counter-electromotive force generated in the weights by eddy currents induced by an alternating magnetic field produced by pairs of magnets with which the stator 16 is provided.
  • the hour piece 10 comprises an outer arm 17 provided with an hour rake 18 consisting of twelve protruding teeth.
  • the hour rake 18 actuates an hours hammer (not shown) which strikes a tuned hour gong at a predetermined acoustic frequency, possibly amplified by a structural part of watch 1 (eg caseband 2).
  • the hour hammer strikes the hour gong a number of times (between one and twelve) equal to the number of teeth of rake 18 that actuated it when returning the hour piece 10 from its reading position to its position rest.
  • the repeater 5 comprises, in the fourth place, a spring 19 for the hours, which recalls the part 10 from the hours to its reading position.
  • the hour spring 19 is a spiral spring. It is advantageously fixed on the hour part 10 by an internal end 20, and on an axis integral with the plate by an external end 21.
  • the repeater 5 also includes a quarter spring 26 which returns the quarter piece 22 to its reading position, and a minute spring 27 which returns the minute piece 24 to its reading position.
  • the minute piece 24 is provided, on an outer arm 28, with a minute rake 29 consisting of fourteen projecting teeth.
  • the minutes rake 29 actuates a minutes hammer (not shown) which strikes a minutes timbre tuned to a different predetermined acoustic frequency (for example). eg lower) than the acoustic frequency of the hour tone.
  • the minute hammer strikes the minute gong a number of times (between zero and fourteen) equal to the number of teeth of the minute rake 29 which actuated it when the 24 minute piece returns from its reading position to its resting position.
  • the part 22 of the quarters is provided, on an outer arm 30, with a rake 31 of the quarters consisting of three series of protruding teeth.
  • the quarter rake 31 operates the hour hammer and the hour hammer almost simultaneously. minute hammer to generate a close sequence of two notes.
  • the hours hammer and the minutes hammer strike their respective gongs a number of times (between zero and three) equal to the number of series of teeth of the rake 31 of the quarters which actuated them when the piece 22 of the quarters returned. its reading position to its rest position.
  • the hour piece 10, the quarter piece 22 and the minute piece 24, mounted in rotation on the same axis A3, are angularly offset with respect to each other, such that, during their rotation integral around axis A3, readings take place successively in the following order: minutes; quarters; hours.
  • the ringing is however carried out in the reverse order: hours; quarters; minutes.
  • the repetition 5 comprises, in the fifth place, a striking barrel 32.
  • the barrel shaft 33, the barrel drum 34 and the pulley 38 are all rotatably mounted about the barrel axis A4. These components are described in detail below.
  • the pulley defines a path 39 of the peripheral cam.
  • the repetition 5 comprises, in the sixth place, a chain 40 able to wind up partially on the pulley 38. More precisely, the chain is able to wind up on the cam track 39.
  • the chain 40 is hooked, by a proximal end 41, on the pulley 38 and, by a distal end 42, on the hour part 10.
  • the chain 40 comprises a plurality of links 43 articulated with respect to one another.
  • the link 43 located at the proximal end 41 of the chain 40 is fixed to a pin 44 integral with the pulley 38.
  • the link 43 located at the distal end 42 of the chain 40 is itself fixed to a pin (not visible) integral with the outer arm 17 of the part 10 of the hours.
  • the repeater 5 comprises a return bearing 45 on which the chain 40 circulates, between the striking barrel 32 and the part 10 of the hours.
  • This return bearing 45 is advantageously in the form of a bearing (eg ball bearings).
  • the pulley 38 is a separate part of the barrel drum 34 and the barrel shaft 33. More precisely, the pulley 38 is movable in rotation with respect to the barrel shaft 33.
  • the striking barrel 32 comprises a bearing 46 (eg ball) interposed between the barrel shaft 33 and the pulley 38.
  • a bearing 46 eg ball
  • the barrel shaft 32 comprises a pivot 48 and a plug 49 (which can be attached to the pivot 48 or formed integrally therewith) on which the drum 34 is mounted.
  • the plug 49 is provided on the outside with a hook 50 to which the internal end 36 of the spring 35 of the barrel is fixed.
  • the pivot 48 has, at an end opposite to the plug 49, a head 51 with a square section.
  • the barrel drum 34 comprises a bottom 52 pierced, in its center, with a hole 53 through which the barrel drum 34 is threaded (with clearance) on the bung 49, and a skirt 54 which projects axially from the bottom 52, on the outskirts of it.
  • the outer end 37 of the barrel spring 35 is fixed to the skirt 54, e.g. by means of an extra thickness 55 formed on the barrel spring 35 (possibly in the form of an attached and welded blade) housed in a notch 56 hollowed out in the internal wall of the skirt 54.
  • the barrel drum 34 carries, on its periphery (and more precisely, in the example illustrated, on the periphery of its skirt 54), a toothed crown 57 with asymmetric teeth, and the repeat 5 comprises a pawl 58 for locking in taken with this toothed crown 57, to block the rotation of the barrel drum 34 in the unwinding direction of the chain 40.
  • the ratchet 47 is formed integrally with the pivot 48.
  • the ratchet 47 is advantageously in the form of a disc.
  • the ratchet 47 incorporates a tooth 59.
  • tooth 59 protrudes radially from the periphery of ratchet 47.
  • the striking barrel 32 comprises a pulley spring 60, operating in torsion and interposed between the ratchet 47 and the pulley 38, and which exerts on the latter a resistant torque which keeps the chain 40 under tension when the ratchet 47 is decoupled in pulley rotation 48.
  • the pulley spring 60 is a spiral spring, one internal end 61 of which is integral with the ratchet 47, and one external end 62 of which is integral with the pulley 38.
  • the pulley spring 60 can be made of high elastic limit steel. As a variant, it can be made of silicon.
  • the internal end 61 of the pulley spring 60 is shaped as a first eyelet fitted into a complementary notch 63 formed in the ratchet 47 (see the detail circles at the top and on the right on the FIG. 4 ). Furthermore, the outer end 62 of the pulley spring 60 is shaped as a second eyelet nested in a complementary notch 64 formed in the pulley 38 (see the detail circles on the left on the FIG. 4 ).
  • the pulley 38 incorporates a stop 65.
  • This stop 65 is eg. formed in the vicinity of the periphery of the pulley 38.
  • the stop 65 is in the form of an attached pin, driven into a bore made in the pulley 38.
  • the tooth 59 of the ratchet 47 is applied against the stop 65 as long as the chain 40 exerts a tensile force on the pulley 38. Conversely, the tooth 59 of the ratchet is angularly spaced from the stop 65 as soon as the tensile force exerted on the chain 40 by the hour part 10 in the reading position is canceled.
  • the rack 66 has the shape of a hook.
  • the rack 66 is provided with a bore 69 through which it is mounted on its axis A5.
  • the rack 66 comprises a lever 70 carrying at its end a button 71 (which, in the example illustrated, is attached and driven into a hole formed in the end of the lever 70) , and a bent arm 72 in which the toothed sector 67 is formed.
  • the rack 66 is mounted in rotation around its axis A5 between a rest position ( FIG. 6 ) and a fully armed position ( FIG. 11 ).
  • the striking gear 68 comprises an input pinion 73 meshing with the rack 66, and an output pinion 74 integral in rotation with the barrel shaft 33 (for this purpose the pinion 74 is for example provided at its center with a square footprint complementary to the head 51 of the barrel shaft 33).
  • the striking gear 68 further comprises a multiplier pinion 75 (partially cut off on the FIG. 6 , FIG. 9 and FIG. 11 ) integral in rotation with the input pinion 73 and meshing with the output pinion 74.
  • the rack 66 and the pinions 73, 74, 75 of the striking gear 68 are dimensioned and arranged so that the total angular travel of the rack 66 between its rest position and its fully cocked position corresponds to an almost complete revolution of the pulley 38, inducing an almost total unwinding of the chain 40 of the cam path 39.
  • the rack 66 comprises twelve teeth (nine and a half of which are useful during the travel of the rack 66 between the rest position and the fully cocked position); the input pinion 73 comprises fourteen teeth; the multiplier pinion 75 comprises twenty-two teeth and the output pinion 74 comprises fifteen teeth.
  • the transmission ratio between the rack 66 and the output pinion is 0.99.
  • on the run total of the rack 66 corresponds to a rotation of the ratchet of 358 °.
  • the rack 66 is advantageously provided, at the free end of the toothed sector 67, with a stopper 76, which is here in the form of a driven insert, and which, in the fully cocked position of the rack 66 wedges against the input pinion 73 which thus forms an end-of-travel stop for the latter.
  • the stop 76 although mounted tightly by driving in, can tolerate an angular displacement, so as to form an eccentric allowing the watchmaker to finely adjust the angular position of the rack 66 (and therefore the corresponding angular position of the ratchet 47) at the end of the stroke in its fully cocked position.
  • Repetition 5 operates as follows, it being understood that the barrel drum 34, retained by the locking pawl 58, can only rotate around the barrel axis A4 in the direction indicated by the arrow X1 ( FIG. 3 ).
  • the rack 66 is permanently returned to its rest position by the torsional force of the spring 35 of the barrel forcefully wound on the axis 33 of the barrel.
  • the rack 66 occupies its rest position.
  • the barrel spring 35 exerts on the barrel shaft 33 a motor torque in the direction of arrow X1 ( FIG. 3 ).
  • the ratchet 47 is integral in rotation with the barrel shaft 33. This torque is therefore transmitted to ratchet 47, whose tooth 59 is applied (in clockwise on the FIG. 7 ) on the stop 65 with which the pulley 38 is provided.
  • the engine torque is transmitted to the pulley 38, which thus exerts a traction on the chain 40 (in the direction indicated by the arrow Y1 on the FIG. 3 ), traction whose force is determined by the ratio of the driving torque induced by the barrel shaft 33 to the radius of the pulley 38 at the point where the chain leaves it.
  • the repeater 5 is actuated by the wearer by means of a pressure exerted radially on the pusher 77, in the direction of the center of the caseband 2 (white arrow, at the bottom on the FIG. 9 and on the FIG. 10 ).
  • the pusher 77 presses the button 71 which it moves by pivoting, via the lever 70, the rack 66 around its axis A5, in the direction indicated on the FIG. 9 and FIG. 10 by arrow F1.
  • the rack 66 which meshes the input pinion 73, drives the latter in rotation in the direction indicated on the FIG. 9 by arrow F2.
  • the multiplier pinion 75 which is integral in rotation with the input pinion 73, rotates in the same direction (arrow F3). It in turn engages the output pinion 74, which is rotated in the opposite direction (arrow F4).
  • the barrel shaft 33 integral with the output pinion 74 and the ratchet 47, drives the latter in the direction of rotation of the output pinion 74 (arrow F5, FIG. 10 ), by charging the spring 35 of the barrel.
  • the barrel shaft 33 drives in its rotation the internal end 36 of the barrel spring 35 while the external end 37 thereof remains fixed in rotation with the barrel drum 34, which is retained by the barrel.
  • pawl 58 engaged with the toothed crown 57.
  • the hour part 10 reaches its reading position at the same time as the rack 66 reaches its fully cocked position.
  • the stop 65 of the pulley 38 remains in contact with the tooth 59 of the ratchet 47 over their entire angular travel, and the chain 40 remains permanently tensioned.
  • the pressure on the pusher 77 is maintained until the rack 66 has reached its fully loaded position when the stopper 76 comes to be wedged against the input pinion 73 ( FIG. 11 ). From the wearer's point of view, the push-button 77 (and therefore the bell) operates in all-or-nothing mode, that is to say that the push-button 77 must be fully depressed regardless of the time to strike.
  • the hour piece 10 blocks the chain 40, which in turn blocks the rotation of the pulley 38, which blocks the rotation of the ratchet 47, which blocks the rotation of the barrel shaft 33 and with it is the striking gear 68 and the rack 66.
  • the push-button 77 pushed back by the rack 66 via the button, for its part returns to its rest position. Repetition 5 is thus blocked.
  • repetition 5 even though the push-button 77 operates in all-or-nothing mode, and that it is pushed to the limit whatever the hour to strike, the chain 40 remains permanently maintained under tension. . In addition to the aesthetic aspect (the fluttering of the chain could be considered a defect by the demanding hobbyist), the stress peaks undergone by the chain 40 are avoided, to the benefit of its longevity - and that of the whole. repetition 5. In the end, the mechanical fatigue undergone by the chain 40 and all the moving parts of repetition 5 is limited.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Transmission Devices (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
  • Electromechanical Clocks (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Description

Domaine techniqueTechnical area

L'invention a trait au domaine de l'horlogerie. Elle concerne, plus précisément, un mécanisme de répétition pour une pièce d'horlogerie à sonnerie, l'expression « pièce d'horlogerie » désignant de préférence une montre (à bracelet ou à gousset), mais pouvant également désigner une pendule ou encore une horloge.The invention relates to the field of watchmaking. It relates, more precisely, to a repeating mechanism for a striking timepiece, the expression "timepiece" preferably designating a watch (with a bracelet or pocket), but can also designate a pendulum or even a clock. clock.

Arrière-plan technologiqueTechnological background

Le mécanisme à répétition (couramment simplement dénommé répétition) a pour fonction, sur commande de l'utilisateur (ou porteur) exerçant à tout instant une pression sur un poussoir, de sonner l'heure indiquée à cet instant par les aiguilles de la pièce d'horlogerie.The repeater mechanism (commonly simply called repeater) has the function, on command of the user (or wearer) exerting pressure on a pusher at any time, to strike the time indicated at that moment by the hands of the part. watchmaking.

La répétition est une complication horlogère d'un raffinement extrême, dont la maîtrise honore l'horloger qui en est à l'origine. Jadis destinée à permettre la connaissance de l'heure dans l'obscurité, la répétition équipe aujourd'hui les montres de grande, voire très grande valeur.Repetition is an extremely refined horological complication, the mastery of which honors the watchmaker who created it. Formerly intended to allow knowledge of the time in the dark, repetition today equips watches of great, even very great value.

Il existe plusieurs types de répétition. Dans Les Montres Compliquées (Ed. Simonin, cinquième édition, 2013), F. Lecoultre en compte cinq, mais en distingue essentiellement deux (les moins rares) :

  • La répétition à minutes, qui, outre les heures, fait tinter toutes les minutes ;
  • La répétition à quarts, qui, outre les heures, fait tinter le(s) quart(s) écoulé(s) puis les éventuelles minutes résiduelles.
There are several types of repetition. In Complicated Watches (Ed. Simonin, fifth edition, 2013), F. Lecoultre has five, but essentially distinguishes two (the less rare):
  • The minute repeater, which, in addition to the hours, chimes every minute;
  • The quarter repeater, which, in addition to the hours, tinkles the elapsed quarter (s) then any remaining minutes.

Quel qu'en soit le type, un mécanisme à répétition comprend classiquement :

  • Au moins un limaçon des heures ;
  • Au moins une pièce des heures portant un palpeur des heures et montée en rotation autour d'un axe des heures entre :
    • Une position de repos dans laquelle le palpeur des heures est écarté angulairement du limaçon des heures ; et
    • Une position de lecture dans laquelle le palpeur des heures vient au contact du limaçon des heures ;
  • Un ressort qui rappelle la pièce des heures vers sa position de repos ;
  • Et un barillet de sonnerie, couplé à la pièce des heures.
Whatever the type, a repeating mechanism conventionally comprises:
  • At least a snail for hours;
  • At least one hour piece bearing an hour feeler and mounted in rotation around an hour axis between:
    • A rest position in which the hour feeler is angularly separated from the hour snail; and
    • A reading position in which the hour feeler comes into contact with the hour snail;
  • A spring which recalls the hour piece to its rest position;
  • And a striking barrel, coupled with the hours piece.

En l'absence d'action du porteur, la pièce des heures est dans sa position de repos.In the absence of any action by the wearer, the hours piece is in its rest position.

Le déplacement du poussoir provoque une rotation forcée du barillet de sonnerie, la pièce des heures étant elle-même déplacée vers sa position de lecture à l'encontre du ressort.The movement of the pusher causes a forced rotation of the striking barrel, the hours piece itself being moved to its reading position against the spring.

Le relâchement du poussoir est accompagné du retour de la pièce des heures vers sa position de repos. Chemin faisant, la pièce des heures engrène (directement ou indirectement) un marteau frappant un timbre un nombre de fois égal au nombre d'heures lues sur le limaçon et proportionnel à la course angulaire parcourue par la pièce des heures entre ses deux positions (lecture, repos).Releasing the pusher is accompanied by the return of the hours piece to its rest position. Along the way, the hour piece engages (directly or indirectly) a hammer striking a gong a number of times equal to the number of hours read on the limaçon and proportional to the angular travel traveled by the hour piece between its two positions (reading , rest).

Dans la répétition dite antique, le couplage du barillet à la pièce des heures s'effectuait au moyen d'une bascule et d'une chaîne, comme expliqué par F. Lecoultre (op.cit., pp.68-69 et Fig.19, Planche 17).In the so-called antique repetition, the barrel was coupled to the hours piece by means of a rocker and a chain, as explained by F. Lecoultre (op.cit., Pp. 68-69 and Fig. 19, Plate 17).

Ce couplage a, dans les répétitions modernes, été remplacé par une crémaillère et un rouage, comme l'explique également F. Lecoultre (op.cit., pp.73-74). Deux ressorts antagonistes sont prévus : un ressort de barillet qui sollicite la pièce des heures vers sa position de repos, et un ressort des heures qui la sollicite vers sa position de lecture. L'actionnement du barillet par le porteur, tout en armant le ressort de barillet, libère le ressort des heures qui rappelle la pièce des heures vers sa position de lecture. Le relâchement du barillet libère au contraire le ressort de barillet, qui rappelle la pièce des heures vers sa position de repos (à l'encontre du ressort des heures), pendant que se déroule la sonnerie de l'heure.This coupling has, in modern rehearsals, been replaced by a rack and a cog, as F. Lecoultre also explains (op.cit., Pp. 73-74). Two opposing springs are provided: a barrel spring which urges the hour piece towards its rest position, and an hour spring which urges it towards its reading position. The actuation of the barrel by the wearer, while charging the barrel spring, releases the hour spring which returns the hour piece to its reading position. Releasing the barrel, on the other hand, releases the barrel spring, which returns the hour piece to its rest position (against the hour spring), while the hour striking takes place.

Ce type de répétition ne donne pas entièrement satisfaction, car le couple moteur exercé par le ressort de barillet n'est par constant. Il en résulte, lors du fonctionnement, des variations dans les efforts auxquels est soumise la pièce des heures, ce qui peut générer dans celle-ci des cycles de fatigue mécanique, propices à sa fissuration.This type of repetition is not entirely satisfactory, since the driving torque exerted by the barrel spring is not constant. This results in variations in the forces to which the part is subjected during operation. hours, which can generate mechanical fatigue cycles in it, conducive to cracking.

Il a récemment été proposé un tout nouveau mécanisme de répétition, qui équipe la montre Breguet modèle 7087 « Tradition », et dans lequel le rouage est remplacé par une transmission à chaîne.A completely new repeating mechanism has recently been proposed, which is fitted to the Breguet model 7087 “Tradition” watch, and in which the cog is replaced by a chain transmission.

Cette transmission est à ne pas confondre avec la chaîne de la répétition antique évoquée ci-dessus, car elle fonctionne à l'inverse.This transmission is not to be confused with the chain of ancient repetition mentioned above, because it works in reverse.

Plus précisément, dans cette répétition, le barillet comprend :

  • ∘ Un arbre de barillet ;
  • ∘ Un tambour de barillet,
  • ∘ Un ressort de barillet dont une extrémité interne est solidaire de l'arbre de barillet et une extrémité externe est solidaire du tambour de barillet,
  • ∘ Une poulie sur laquelle s'enroule la chaîne.
More precisely, in this repetition, the barrel comprises:
  • ∘ A barrel shaft;
  • ∘ A barrel drum,
  • ∘ A barrel spring, one inner end of which is secured to the barrel shaft and one outer end is secured to the barrel drum,
  • ∘ A pulley on which the chain winds.

La chaîne est accrochée, par une extrémité proximale, sur la poulie et, par une extrémité distale, sur la pièce des heures. En l'absence d'action du porteur sur le poussoir, le ressort de barillet tend la chaîne qui maintient la pièce des heures dans sa position de repos. L'action du porteur sur un poussoir provoque la rotation forcée de l'arbre de barillet, ce qui libère la chaîne et donc la pièce des heures, laquelle est rappelée vers sa position de lecture par le ressort des heures.The chain is hooked, by a proximal end, on the pulley and, by a distal end, on the hour piece. In the absence of any action by the wearer on the pusher, the barrel spring tightens the chain which maintains the hour piece in its rest position. The action of the wearer on a pusher causes the forced rotation of the barrel shaft, which frees the chain and therefore the hour piece, which is returned to its reading position by the hour spring.

Lorsque le porteur relâche le poussoir, le ressort de barillet, dont le couple moteur exercé sur l'arbre de barillet est supérieur au couple résistant exercé par le ressort des heures sur la pièce des heures, rappelle celle-ci vers sa position de repos. Chemin faisant, l'heure est sonnée.When the wearer releases the pusher, the barrel spring, the driving torque of which exerted on the barrel shaft is greater than the resistive torque exerted by the hour spring on the hour piece, returns the latter to its rest position. Along the way, the hour has struck.

La lecture (et le tintement) des quarts et/ou des minutes suit le même principe, avec un limaçon des quarts (respectivement des minutes) et une pièce des quarts (respectivement des minutes) portant un palpeur des quarts (respectivement des minutes) apte à venir, dans une position de lecture, au contact du limaçon des quarts (respectivement des minutes).The reading (and tinkling) of the quarters and / or the minutes follows the same principle, with a limaçon of the quarters (respectively minutes) and a quarter piece (respectively minutes) carrying a suitable quarter (respectively minutes) feeler. to come, in a reading position, in contact with the limaçon of the quarters (respectively of the minutes).

Ce mécanisme présente un avantage en termes d'encombrement et de montage. En effet, la chaîne, qui fait le lien mécanique entre le barillet et la pièce des heures d'autre part, permet de les positionner à distance l'un de l'autre. Il est ainsi possible, quel que soit le positionnement de la pièce des heures dans la carrure, de placer le barillet au plus près du poussoir, ce qui évite d'avoir recours à de complexes renvois à leviers, au bénéfice de la fiabilité de la montre.This mechanism has an advantage in terms of size and assembly. Indeed, the chain, which makes the mechanical link between the barrel and the hour piece on the other hand, allows them to be positioned at a distance from each other. It is thus possible, regardless of the positioning of the hour piece in the middle, to place the barrel as close as possible to the pusher, which avoids having to resort to complex lever references, to the benefit of the reliability of the watch.

Cependant, ce mécanisme à chaîne présente un inconvénient, qui résulte de ce qu'il fonctionne en tout-ou-rien, c'est-à-dire que, quelle que soit l'heure à sonner, le porteur enfonce à fond le poussoir. De la sorte, l'actionnement du barillet provoque le déroulement complet de la chaîne, quelle que soit la course angulaire de la pièce des heures. Dans le cas (unique) où l'heure à lire est 12h59 (ce qui correspond à la course maximale des pièces des heures (le cas échéant des quarts) et des minutes, la chaîne demeure tendue. Mais dans tous les autres cas, la course angulaire de ces pièces n'est pas maximale, et la course résiduelle de la chaîne (au-delà de celle qu'elle adopte dans la position de lecture de la pièce des heures) provoque sa détente, et son flottement.However, this chain mechanism has a drawback, which results from the fact that it operates in all-or-nothing mode, that is to say that, whatever the hour to strike, the wearer fully depresses the pusher. . In this way, the actuation of the barrel causes the complete unwinding of the chain, whatever the angular travel of the hour piece. In the (unique) case where the time to be read is 12.59 p.m. (which corresponds to the maximum stroke of the hour (where applicable) and minute parts, the chain remains tight. But in all other cases, the Angular travel of these parts is not maximum, and the residual travel of the chain (beyond that which it adopts in the reading position of the hour part) causes it to relax and float.

Au relâchement du barillet, le ressort de barillet ne rencontre aucun effort résistant jusqu'à ce que la chaîne soit à nouveau brusquement tendue entre lui et le ressort des heures. Il en résulte un pic dans l'effort de traction auquel est soumise la chaîne, qui peut induire une fatigue en cisaillement dans axes des maillons de la chaîne ou dans son point de fixation sur la pièce des heures.When the barrel is released, the barrel spring does not encounter any resistive force until the chain is again sharply stretched between it and the hour spring. This results in a peak in the tensile force to which the chain is subjected, which can induce shear fatigue in the axes of the links of the chain or in its point of attachment to the hours part.

Un premier objectif est par conséquent, dans un mécanisme de répétition à chaîne tel que décrit ci-dessus, de minimiser la fatigue mécanique des pièces mobiles (en particulier de la chaîne).A first objective is therefore, in a chain repeating mechanism as described above, to minimize the mechanical fatigue of the moving parts (in particular of the chain).

Un deuxième objectif est, plus précisément, de lisser les efforts générés dans la chaîne par l'action du ressort de barillet.A second objective is, more precisely, to smooth the forces generated in the chain by the action of the barrel spring.

Résumé de l'inventionSummary of the invention

Il est proposé, en premier lieu, un mécanisme de répétition pour une pièce d'horlogerie à sonnerie, qui comprend :

  • Un limaçon des heures ;
  • Une pièce des heures portant un palpeur des heures et montée en rotation autour d'un axe des heures entre :
    • Une position de repos dans laquelle le palpeur des heures est écarté angulairement du limaçon des heures ;
    • Une position de lecture dans laquelle le palpeur des heures vient au contact du limaçon des heures ;
  • Un ressort des heures, qui rappelle la pièce des heures vers sa position de lecture ;
  • Un barillet de sonnerie, qui comprend :
    • ∘ Un arbre de barillet ;
    • ∘ Un tambour de barillet,
    • ∘ Un ressort de barillet dont une extrémité interne est solidaire de l'arbre de barillet et une extrémité externe est solidaire du tambour de barillet ;
    • ∘ Une poulie ;
  • Une chaîne apte à s'enrouler partiellement sur la poulie, la chaîne étant accrochée, par une extrémité proximale, sur la poulie et, par une extrémité distale, sur la pièce des heures ;
Ce mécanisme à répétition étant remarquable en ce que la poulie est mobile en rotation par rapport à l'arbre de barillet, et en ce que le barillet de sonnerie comprend :
  • Un rochet, solidaire en rotation de l'arbre de barillet et :
    • Couplé en rotation avec la poulie tant que la pièce des heures exerce sur la chaîne un effort de traction ;
    • Découplé en rotation de la poulie dès lors que s'annule l'effort de traction exercé sur la chaîne par la pièce des heures en position de lecture ;
  • Un ressort de poulie interposé entre le rochet et la poulie, et qui exerce sur celle-ci un couple résistant qui maintient la chaîne sous tension lorsque le rochet est découplé en rotation de la poulie.
First, a repeating mechanism is proposed for a striking timepiece, which comprises:
  • A snail for hours;
  • An hour piece bearing an hour feeler and mounted in rotation around an hour axis between:
    • A rest position in which the hour feeler is angularly separated from the hour snail;
    • A reading position in which the hour feeler comes into contact with the hour snail;
  • An hour spring, which recalls the hour piece towards its reading position;
  • A striking cylinder, which includes:
    • ∘ A barrel shaft;
    • ∘ A barrel drum,
    • ∘ A barrel spring, an inner end of which is integral with the barrel shaft and an external end of which is integral with the barrel drum;
    • ∘ A pulley;
  • A chain able to wind up partially on the pulley, the chain being hooked, by a proximal end, on the pulley and, by a distal end, on the hour piece;
This repeating mechanism being remarkable in that the pulley is movable in rotation with respect to the barrel shaft, and in that the striking barrel comprises:
  • A ratchet, integral in rotation with the barrel shaft and:
    • Coupled in rotation with the pulley as long as the hour part exerts a traction force on the chain;
    • Decoupled in rotation from the pulley as soon as the traction force exerted on the chain by the hours piece in the reading position is canceled;
  • A pulley spring interposed between the ratchet and the pulley, and which exerts on the latter a resistant torque which keeps the chain under tension when the ratchet is decoupled in rotation from the pulley.

De la sorte, la chaîne est toujours tendue, quelle que soit l'heure à sonner. Il en résulte une diminution de la fatigue mécanisme que la chaîne (avec l'ensemble des composants mobiles) subit au cours du temps, au bénéfice de la fiabilité (et de la longévité) du mécanisme.In this way, the chain is always tight, whatever the hour to strike. This results in a reduction in the mechanism fatigue that the chain (with all the moving components) undergoes over time, to the benefit of the reliability (and longevity) of the mechanism.

Il est proposé, en deuxième lieu, une montre équipée d'une carrure et d'un tel mécanisme à répétition, monté dans la carrure.Secondly, a watch is proposed which is fitted with a middle part and such a repeating mechanism, mounted in the middle part.

Diverses caractéristiques supplémentaires, présentées ci-dessous, peuvent être prévues, seules ou en combinaison.Various additional features, presented below, can be provided, singly or in combination.

Ainsi, le ressort de poulie est de préférence ressort spiral dont une extrémité interne est solidaire du rochet, et dont une extrémité externe est solidaire de la poulie.Thus, the pulley spring is preferably a spiral spring, one internal end of which is integral with the ratchet, and one external end of which is integral with the pulley.

La poulie intègre avantageusement une butée, et le rochet intègre une dent qui est appliquée contre la butée tant que la chaîne exerce sur la poulie un effort de traction, et qui en est écartée angulairement dès lors que s'annule l'effort de traction exercé sur la chaîne par la pièce des heures en position de lecture.The pulley advantageously incorporates a stopper, and the ratchet incorporates a tooth which is applied against the stopper as long as the chain exerts a tensile force on the pulley, and which is angularly separated from it when the tensile force exerted is canceled. on the chain by the hour piece in the reading position.

Le mécanisme de répétition peut en outre comprendre :

  • Une crémaillère montée en rotation autour d'un axe et pourvue d'un secteur denté ;
  • Un rouage de sonnerie en relation d'engrenage d'une part avec le secteur denté de la crémaillère et d'autre part avec l'arbre de barillet.
The repetition mechanism may further include:
  • A rack mounted in rotation around an axis and provided with a toothed sector;
  • A striking gear in gear relation on the one hand with the toothed sector of the rack and on the other hand with the barrel shaft.

Dans ce cas, la montre est avantageusement équipée, outre de la carrure et du mécanisme de répétition, d'un poussoir monté en translation sur la carrure entre une position désarmée dans laquelle le poussoir n'exerce pas de couple moteur sur la crémaillère, et une position d'armement dans laquelle le poussoir exerce sur la crémaillère un couple moteur qui entraîne en rotation l'arbre de barillet via le rouage de sonnerie.In this case, the watch is advantageously equipped, in addition to the middle part and the repeating mechanism, with a push-piece mounted in translation on the middle part between a disarmed position in which the push-piece does not exert any driving torque on the rack, and a cocking position in which the pusher exerts a motor torque on the rack which drives the barrel shaft in rotation via the striking gear.

Le rouage de sonnerie comprend par exemple un pignon d'entrée engrenant le secteur denté de la crémaillère, et un pignon de sortie solidaire en rotation de l'arbre de barillet.The striking gear for example comprises an input pinion meshing the toothed sector of the rack, and an output pinion rotatably fixed to the barrel shaft.

Le rouage de sonnerie comprend avantageusement un pignon multiplicateur solidaire en rotation du pignon d'entrée et engrenant le pignon de sortie.The striking gear preferably comprises a multiplier pinion rotatably secured to the input pinion and meshing with the output pinion.

Le mécanisme de répétition peut en outre comprendre un cliquet de blocage en prise avec une couronne dentée à denture asymétrique portée par le tambour de barillet.The repeating mechanism may further include a locking pawl engaged with an asymmetric toothed ring gear carried by the barrel drum.

Le mécanisme de répétition peut également être pourvu d'un palier de renvoi sur lequel circule la chaîne entre le barillet de sonnerie et la pièce des heures.The repeating mechanism can also be provided with a return bearing on which the chain circulates between the striking barrel and the hours piece.

Brève description des figuresBrief description of the figures

D'autres objets et avantages de l'invention apparaîtront à la lumière de la description d'un mode de réalisation, faite ci-après en référence aux dessins annexés dans lesquels :

  • La FIG.1 est une vue en perspective de dessous montrant partiellement une montre équipée d'un mécanisme de répétition ;
  • La FIG.2 est une vue en perspective du mécanisme de répétition seul, à plus grande échelle ;
  • La FIG.3 est une vue du mécanisme de répétition, dépourvu d'une partie de ses composants pour plus de clarté sur son fonctionnement ;
  • La FIG.4 est une vue en perspective éclatée du barillet de sonnerie du mécanisme de répétition, avec quelques détails à plus grande échelle, montrés dans divers médaillons ;
  • La FIG.5 est une vue en perspective éclatée du barillet de sonnerie de la FIG.4, selon un autre angle de vue ;
  • La FIG.6 est une vue en plan de dessus du barillet de sonnerie (partiellement dénudé pour plus de clarté), dans une configuration désarmée ;
  • La FIG.7 est une vue en plan de dessous du barillet de sonnerie, dans sa configuration désarmée ;
  • La FIG.8 est une vue en coupe du barillet de sonnerie complet, selon le plan de coupe VIII-VIII de la FIG.7 ;
  • La FIG.9 est une vue en plan de dessus du barillet de sonnerie, dans une configuration d'armement partiel correspondant à un déroulement partiel de la chaîne ;
  • La FIG.10 est une vue en plan de dessous du barillet de sonnerie (partiellement dénudé), dans sa configuration d'armement partiel ;
  • La FIG.11 est une vue en plan de dessus du barillet de sonnerie, dans une configuration d'armement total correspondant au déroulement total de la chaîne ;
  • La FIG.12 est une vue en plan de dessous du barillet de sonnerie (partiellement dénudé), dans sa configuration d'armement total.
Other objects and advantages of the invention will emerge in the light of the description of an embodiment, given below with reference to the appended drawings in which:
  • The FIG. 1 is a perspective view from below partially showing a watch equipped with a repeating mechanism;
  • The FIG. 2 is a perspective view of the repeat mechanism alone, on a larger scale;
  • The FIG. 3 is a view of the repeating mechanism, stripped of some of its components for clarity on how it works;
  • The FIG. 4 is an exploded perspective view of the striking barrel of the repeating mechanism, with some details on a larger scale, shown in various medallions;
  • The FIG. 5 is an exploded perspective view of the striking barrel of the FIG. 4 , from another angle of view;
  • The FIG. 6 is a top plan view of the striking barrel (partially stripped for clarity), in a disarmed configuration;
  • The FIG. 7 is a bottom plan view of the striking barrel, in its disarmed configuration;
  • The FIG. 8 is a sectional view of the complete striking barrel, according to section VIII-VIII of the FIG. 7 ;
  • The FIG. 9 is a top plan view of the striking barrel, in a partial cocking configuration corresponding to a partial unwinding of the chain;
  • The FIG. 10 is a bottom plan view of the striking barrel (partially stripped), in its partial cocking configuration;
  • The FIG. 11 is a top plan view of the striking barrel, in a fully armed configuration corresponding to the total unwinding of the chain;
  • The FIG. 12 is a bottom plan view of the striking barrel (partially stripped), in its fully cocked configuration.

Description détaillée de l'inventionDetailed description of the invention

Sur la FIG.1 est partiellement représentée une pièce d'horlogerie, en l'espèce une montre 1. La montre 1 comprend une carrure 2 qui définit un volume 3 interne. Dans l'exemple illustré, la montre 1 est conçue pour le port au poignet, et sa carrure 2 comprend à cet effet des cornes 4 en saillie, sur lesquelles est destiné à venir se fixer un bracelet (non représenté).On the FIG. 1 partially shown is a timepiece, in this case a watch 1. Watch 1 comprises a middle part 2 which defines an internal volume 3. In the example illustrated, watch 1 is designed for wearing on the wrist, and its middle part 2 comprises for this purpose projecting lugs 4, on which a bracelet (not shown) is intended to be fixed.

La montre 1 comprend un mouvement d'horlogerie conçu pour indiquer au moins les heures et les minutes. Le mouvement comprend une platine destinée à venir se loger dans le volume 3 interne défini par la carrure 2, en y étant fixé.Watch 1 comprises a clockwork movement designed to indicate at least the hours and minutes. The movement comprises a plate intended to be housed in the internal volume 3 defined by the middle part 2, while being fixed thereto.

Le mouvement comprend par ailleurs divers composants fonctionnels regroupés par sous-ensembles. Lorsqu'un sous-ensemble a une autre fonction que d'afficher les heures, les minutes et, le cas échéant, les secondes, il est appelé « complication ».The movement also includes various functional components grouped into sub-assemblies. When a sub-assembly has a function other than displaying the hours, minutes and, where appropriate, seconds, it is called a “complication”.

Ainsi, la pièce d'horlogerie (c'est-à-dire la montre 1) illustrée est à sonnerie, et comprend, aux fins de sonner l'heure courante, un mécanisme de répétition, également appelé « complication à répétition » ou, plus simplement (et comme employé ci-après), « répétition » 5.Thus, the timepiece (that is to say the watch 1) illustrated is striking, and comprises, for the purposes of striking the current time, a repeating mechanism, also called a “repeating complication” or, more simply (and as used hereafter), “repetition” 5.

La répétition 5 comprend, en premier lieu, au moins un limaçon 6 des heures. Ce limaçon 6 est monté sur en rotation sur un axe A1. Il présente une forme générale spiralée et comprend sur sa périphérie une succession de douze secteurs angulaires de distances décroissantes à l'axe A1.The repetition 5 comprises, first of all, at least one snail 6 of the hours. This snail 6 is mounted in rotation on an axis A1. It has a generally spiral shape and comprises on its periphery a succession of twelve angular sectors of decreasing distances to the axis A1.

Le limaçon 6 des heures est solidaire en rotation d'une étoile 7 des heures qui comprend douze dents pointues.The 6 o'clock snail is rotatably attached to a 7 o'clock star which includes twelve pointed teeth.

Dans l'exemple illustré, la répétition 5 comprend également un limaçon 8 des quarts, monté en rotation autour d'un axe A2. Le limaçon 8 des quarts comprend quatre secteurs angulaires de distances décroissantes à l'axe A2, séparés par des faces de jonction lisses.In the example illustrated, the repetition 5 also comprises a limaçon 8 of the quarters, mounted in rotation about an axis A2. The snail 8 of the quarters comprises four angular sectors of decreasing distances to the axis A2, separated by smooth junction faces.

La répétition 5 comprend en outre un limaçon 9 des minutes, solidaire en rotation du limaçon 8 des quarts et qui comprend quatre branches crantées sur leur pourtour, séparés par des faces de jonction lisses qui s'étendent dans le prolongement des faces de jonction du limaçon 8 des quarts.The repeater 5 further comprises a snail 9 of the minutes, integral in rotation with the snail 8 of the quarters and which comprises four branches notched on their periphery, separated by smooth junction faces which extend in the extension of the junction faces of the snail. 8 quarters.

Le limaçon 8 des quarts porte au voisinage de sa périphérie un doigt qui, à chaque tour, vient engrener une dent de l'étoile 7 des heures pour faire tourner celle-ci d'un douzième de tour représentant une avancée d'une heure.The limaçon 8 of the quarters carries near its periphery a finger which, on each turn, engages a tooth of the star 7 of the hours in order to make the latter turn by a twelfth of a turn representing an advance of one hour.

La répétition 5 comprend, en deuxième lieu, une pièce 10 des heures, montée en rotation autour d'un axe A3 et portant un palpeur 11 des heures.The repeater 5 comprises, in the second place, an hour part 10, mounted in rotation about an axis A3 and carrying an hour feeler 11.

La pièce 10 des heures est montée en rotation autour de son axe A3 entre :

  • Une position de repos dans laquelle le palpeur 11 des heures est écarté angulairement du limaçon 6 des heures ; et
  • Une position de lecture dans laquelle le palpeur 11 des heures vient au contact du limaçon 6 des heures.
The 10 hours part is mounted in rotation around its axis A3 between:
  • A rest position in which the hour feeler 11 is angularly spaced from the hour limaçon 6; and
  • A reading position in which the hour feeler 11 comes into contact with the hourglass 6.

Comme illustré sur la FIG.3, la pièce des heures 10 comprend un secteur 12 denté qui engrène un régulateur 13 via un rouage 14 multiplicateur. Dans l'exemple illustré, le régulateur 13 est magnétique ; il comprend un rotor 15 monté en rotation dans un stator 16. Le rotor 15 présente une vitesse de rotation limite, déterminée par un équilibre entre la force centrifuge appliquée à des masselottes mobiles ferromagnétiques montées sur le rotor 15, et une force contre-électromotrice générée dans les masselottes par des courants de Foucault induits par un champ magnétique alterné produit par des couples d'aimants dont est pourvu le stator 16.As shown on the FIG. 3 , the hour part 10 comprises a toothed sector 12 which engages a regulator 13 via a gear train 14 multiplier. In the example illustrated, the regulator 13 is magnetic; it comprises a rotor 15 rotatably mounted in a stator 16. The rotor 15 has a limit speed of rotation, determined by a balance between the centrifugal force applied to movable ferromagnetic weights mounted on the rotor 15, and a counter-electromotive force generated in the weights by eddy currents induced by an alternating magnetic field produced by pairs of magnets with which the stator 16 is provided.

La pièce 10 des heures comprend un bras 17 extérieur pourvu d'un râteau 18 des heures constitué de douze dents en saillie. Lors du retour de la pièce 10 des heures de sa position de lecture à sa position de repos, le râteau 18 des heures actionne un marteau des heures (non représenté) qui vient frapper un timbre des heures diapasonné à une fréquence acoustique prédéterminée, éventuellement amplifiée par une pièce structurelle de la montre 1 (par ex. la carrure 2). Le marteau des heures frappe le timbre des heures un nombre de fois (compris entre un et douze) égal au nombre de dents du râteau 18 qui l'ont actionné lors du retour de la pièce 10 des heures de sa position de lecture à sa position de repos.The hour piece 10 comprises an outer arm 17 provided with an hour rake 18 consisting of twelve protruding teeth. When the hour piece 10 returns from its reading position to its rest position, the hour rake 18 actuates an hours hammer (not shown) which strikes a tuned hour gong at a predetermined acoustic frequency, possibly amplified by a structural part of watch 1 (eg caseband 2). The hour hammer strikes the hour gong a number of times (between one and twelve) equal to the number of teeth of rake 18 that actuated it when returning the hour piece 10 from its reading position to its position rest.

La répétition 5 comprend, en quatrième lieu, un ressort 19 des heures, qui rappelle la pièce 10 des heures vers sa position de lecture. Dans l'exemple illustré, le ressort 19 des heures est un ressort spiral. Il est avantageusement fixé sur la pièce 10 des heures par une extrémité 20 interne, et sur un axe solidaire de la platine par une extrémité 21 externe.The repeater 5 comprises, in the fourth place, a spring 19 for the hours, which recalls the part 10 from the hours to its reading position. In the example illustrated, the hour spring 19 is a spiral spring. It is advantageously fixed on the hour part 10 by an internal end 20, and on an axis integral with the plate by an external end 21.

La répétition 5 comprend, dans l'exemple illustré sur la FIG.2, une pièce 22 des quarts portant un palpeur 23 des quarts et montée en rotation autour de l'axe A3 entre :

  • une position de repos dans laquelle le palpeur 23 des quarts est écarté angulairement du limaçon 8 des quarts ; et
  • une position de lecture dans laquelle le palpeur 23 des quarts vient au contact du limaçon 8 des quarts.
Repetition 5 comprises, in the example illustrated on FIG. 2 , a part 22 of the quarters carrying a feeler 23 of the quarters and mounted in rotation around the axis A3 between:
  • a rest position in which the feeler 23 of the quarters is angularly spaced from the snail 8 of the quarters; and
  • a reading position in which the feeler 23 of the quarters comes into contact with the snail 8 of the quarters.

La répétition comprend en outre, dans l'exemple illustré sur la FIG.2, une pièce 24 des minutes portant un palpeur 25 des minutes et montée en rotation autour de l'axe A3 entre :

  • une position de repos dans laquelle le palpeur 25 des minutes est écarté angulairement du limaçon 9 des minutes ; et
  • une position de lecture dans laquelle le palpeur 25 des minutes vient au contact du limaçon 9 des minutes.
The repetition further comprises, in the example illustrated on FIG. 2 , a 24-minute part carrying a 25-minute feeler and mounted in rotation around the axis A3 between:
  • a rest position in which the minute feeler 25 is angularly spaced from the minute string 9; and
  • a reading position in which the minute probe 25 comes into contact with the minute snail 9.

La répétition 5 comprend également un ressort 26 des quarts qui rappelle la pièce 22 des quarts vers sa position de lecture, et un ressort 27 des minutes qui rappelle la pièce 24 des minutes vers sa position de lecture.The repeater 5 also includes a quarter spring 26 which returns the quarter piece 22 to its reading position, and a minute spring 27 which returns the minute piece 24 to its reading position.

La pièce 24 des minutes est pourvue, sur un bras 28 extérieur, d'un râteau 29 des minutes constitué de quatorze dents en saillie. Lors du retour de la pièce 24 des minutes de sa position de lecture à sa position de repos, le râteau 29 des minutes actionne un marteau des minutes (non représenté) qui vient frapper un timbre des minutes diapasonné à une fréquence acoustique prédéterminée différente (par ex. inférieure) à la fréquence acoustique du timbre des heures. Le marteau des minutes frappe le timbre des minutes un nombre de fois (compris entre zéro et quatorze) égal au nombre de dents du râteau 29 des minutes qui l'ont actionné lors du retour de la pièce 24 des minutes de sa position de lecture à sa position de repos.The minute piece 24 is provided, on an outer arm 28, with a minute rake 29 consisting of fourteen projecting teeth. When the minute piece 24 returns from its reading position to its rest position, the minutes rake 29 actuates a minutes hammer (not shown) which strikes a minutes timbre tuned to a different predetermined acoustic frequency (for example). eg lower) than the acoustic frequency of the hour tone. The minute hammer strikes the minute gong a number of times (between zero and fourteen) equal to the number of teeth of the minute rake 29 which actuated it when the 24 minute piece returns from its reading position to its resting position.

La pièce 22 des quarts est pourvue, sur un bras 30 extérieur, d'un râteau 31 des quarts constitué de trois séries de dents en saillie. Lors du retour de la pièce 22 des quarts de sa position de lecture à sa position de repos, le râteau 31 des quarts actionne presque simultanément le marteau des heures et le marteau des minutes pour générer une séquence rapprochée de deux notes. Le marteau des heures et le marteau des minutes frappent leurs timbres respectifs un nombre de fois (compris entre zéro et trois) égal au nombre de séries de dents du râteau 31 des quarts qui les ont actionnés lors du retour de la pièce 22 des quarts de sa position de lecture à sa position de repos.The part 22 of the quarters is provided, on an outer arm 30, with a rake 31 of the quarters consisting of three series of protruding teeth. When the quarter piece 22 returns from its reading position to its rest position, the quarter rake 31 operates the hour hammer and the hour hammer almost simultaneously. minute hammer to generate a close sequence of two notes. The hours hammer and the minutes hammer strike their respective gongs a number of times (between zero and three) equal to the number of series of teeth of the rake 31 of the quarters which actuated them when the piece 22 of the quarters returned. its reading position to its rest position.

Comme on le voit sur la FIG.2, la pièce 10 des heures, la pièce 22 des quarts et la pièce 24 des minutes, montées en rotation sur le même axe A3, sont décalées angulairement l'une par rapport à l'autre, de manière telle que, lors de leur rotation solidaire autour de l'axe A3, les lectures interviennent successivement dans l'ordre suivant : minutes ; quarts ; heures. La sonnerie est cependant effectué dans l'ordre inverse : heures ; quarts ; minutes.As seen on the FIG. 2 , the hour piece 10, the quarter piece 22 and the minute piece 24, mounted in rotation on the same axis A3, are angularly offset with respect to each other, such that, during their rotation integral around axis A3, readings take place successively in the following order: minutes; quarters; hours. The ringing is however carried out in the reverse order: hours; quarters; minutes.

La répétition 5 comprend, en cinquième lieu, un barillet 32 de sonnerie.The repetition 5 comprises, in the fifth place, a striking barrel 32.

Le barillet 32 de sonnerie est monté en rotation autour d'un axe A4 de barillet. Le barillet 32 de sonnerie est un sous-ensemble qui comprend plusieurs composants, parmi lesquels :

  • ∘ Un arbre 33 de barillet ;
  • ∘ Un tambour 34 de barillet ;
  • ∘ Un ressort 35 de barillet dont une extrémité 36 interne est solidaire de l'arbre 33 de barillet et une extrémité 37 externe est solidaire du tambour 34 de barillet ; et
  • ∘ Une poulie 38.
The striking barrel 32 is mounted in rotation about an axis A4 of the barrel. The striking barrel 32 is a sub-assembly which comprises several components, among which:
  • ∘ A 33 barrel shaft;
  • ∘ A 34 barrel drum;
  • ∘ A mainspring 35 of which an inner end 36 is integral with the barrel shaft 33 and an outer end 37 is integral with the barrel drum 34; and
  • ∘ A pulley 38.

L'arbre 33 de barillet, le tambour 34 de barillet et la poulie 38 sont tous trois montés en rotation autour de l'axe A4 de barillet. Ces composants sont décrits en détail plus loin.The barrel shaft 33, the barrel drum 34 and the pulley 38 are all rotatably mounted about the barrel axis A4. These components are described in detail below.

Selon un mode préféré de réalisation, la poulie définit un chemin 39 de came périphérique.According to a preferred embodiment, the pulley defines a path 39 of the peripheral cam.

La répétition 5 comprend, en sixième lieu, une chaîne 40 apte à s'enrouler partiellement sur la poulie 38. Plus précisément, la chaîne est apte à s'enrouler sur le chemin 39 de came. La chaîne 40 est accrochée, par une extrémité 41 proximale, sur la poulie 38 et, par une extrémité 42 distale, sur la pièce 10 des heures.The repetition 5 comprises, in the sixth place, a chain 40 able to wind up partially on the pulley 38. More precisely, the chain is able to wind up on the cam track 39. The chain 40 is hooked, by a proximal end 41, on the pulley 38 and, by a distal end 42, on the hour part 10.

La chaîne 40 comprend une pluralité de maillons 43 articulés les uns par rapport aux autres. Le maillon 43 situé à l'extrémité 41 proximale de la chaîne 40 est fixé sur une goupille 44 solidaire de la poulie 38. Le maillon 43 situé à l'extrémité 42 distale de la chaîne 40 est quant à lui fixé sur une goupille (non visible) solidaire du bras 17 extérieur de la pièce 10 des heures.The chain 40 comprises a plurality of links 43 articulated with respect to one another. The link 43 located at the proximal end 41 of the chain 40 is fixed to a pin 44 integral with the pulley 38. The link 43 located at the distal end 42 of the chain 40 is itself fixed to a pin (not visible) integral with the outer arm 17 of the part 10 of the hours.

Selon un mode de réalisation illustré sur les FIG.2 et FIG.3, la répétition 5 comprend un palier 45 de renvoi sur lequel circule la chaîne 40, entre le barillet 32 de sonnerie et la pièce 10 des heures. Ce palier 45 de renvoi se présente avantageusement sous forme d'un roulement (par ex. à billes).According to an embodiment illustrated on FIG. 2 and FIG. 3 , the repeater 5 comprises a return bearing 45 on which the chain 40 circulates, between the striking barrel 32 and the part 10 of the hours. This return bearing 45 is advantageously in the form of a bearing (eg ball bearings).

Comme on le voit sur les FIG.4, FIG.5 et FIG.8, la poulie 38 est une pièce distincte du tambour 34 de barillet et de l'arbre 33 de barillet. Plus précisément, la poulie 38 est mobile en rotation par rapport à l'arbre 33 de barillet.As seen on FIG. 4 , FIG. 5 and FIG. 8 , the pulley 38 is a separate part of the barrel drum 34 and the barrel shaft 33. More precisely, the pulley 38 is movable in rotation with respect to the barrel shaft 33.

Selon un mode de réalisation illustré sur les FIG.4 et FIG.5, le barillet 32 de sonnerie comprend un roulement 46 (par ex. à bille) interposé entre l'arbre 33 de barillet et la poulie 38.According to an embodiment illustrated on FIG. 4 and FIG. 5 , the striking barrel 32 comprises a bearing 46 (eg ball) interposed between the barrel shaft 33 and the pulley 38.

Comme on le voit sur les FIG.4 et FIG.5, le barillet 32 de sonnerie comprend un rochet 47, solidaire en rotation de l'arbre 33 de barillet. Ce rochet 47 :

  • Est couplé en rotation avec la poulie 38 tant que la pièce 10 des heures exerce sur la chaîne 40 un effort de traction ;
  • Est découplé en rotation de la poulie 38 dès lors que s'annule l'effort de traction exercé sur la chaîne 40 par la pièce 10 des heures en position de lecture.
As seen on FIG. 4 and FIG. 5 , the striking barrel 32 comprises a ratchet 47, integral in rotation with the barrel shaft 33. This ratchet 47:
  • Is coupled in rotation with the pulley 38 as long as the part 10 of the hours exerts on the chain 40 a traction force;
  • Is decoupled in rotation from the pulley 38 when the tensile force exerted on the chain 40 by the part 10 of the hours in the reading position is canceled.

Selon un mode de réalisation illustré sur les dessins, l'arbre 32 de barillet comprend un pivot 48 et une bonde 49 (qui peut être rapportée sur le pivot 48 ou formée de manière monobloc avec celui-ci) sur laquelle est monté le tambour 34 de barillet. La bonde 49 est pourvue extérieurement d'un crochet 50 auquel est fixée l'extrémité 36 interne du ressort 35 de barillet.According to an embodiment illustrated in the drawings, the barrel shaft 32 comprises a pivot 48 and a plug 49 (which can be attached to the pivot 48 or formed integrally therewith) on which the drum 34 is mounted. barrel. The plug 49 is provided on the outside with a hook 50 to which the internal end 36 of the spring 35 of the barrel is fixed.

Le pivot 48 présente, à une extrémité opposée à la bonde 49, une tête 51 à section carrée.The pivot 48 has, at an end opposite to the plug 49, a head 51 with a square section.

Le tambour 34 de barillet comprend un fond 52 percé, en son centre, d'un trou 53 par lequel le tambour 34 de barillet est enfilé (avec jeu) sur la bonde 49, et une jupe 54 qui fait saillie axialement du fond 52, à la périphérie de celui-ci. L'extrémité 37 externe du ressort 35 de barillet est fixée sur la jupe 54, par ex. au moyen d'une surépaisseur 55 formée sur le ressort 35 de barillet (éventuellement sous forme d'une lame rapportée et soudée) logée dans une encoche 56 creusée dans la paroi interne de la jupe 54.The barrel drum 34 comprises a bottom 52 pierced, in its center, with a hole 53 through which the barrel drum 34 is threaded (with clearance) on the bung 49, and a skirt 54 which projects axially from the bottom 52, on the outskirts of it. The outer end 37 of the barrel spring 35 is fixed to the skirt 54, e.g. by means of an extra thickness 55 formed on the barrel spring 35 (possibly in the form of an attached and welded blade) housed in a notch 56 hollowed out in the internal wall of the skirt 54.

Comme illustré sur les FIG.2 à FIG.5, le tambour 34 de barillet porte, sur sa périphérie (et plus précisément, dans l'exemple illustré, sur la périphérie de sa jupe 54), une couronne 57 dentée à denture asymétrique, et la répétition 5 comprend un cliquet 58 de blocage en prise avec cette couronne 57 dentée, pour bloquer la rotation du tambour 34 de barillet dans le sens de déroulement de la chaîne 40.As shown on FIG. 2 to FIG. 5 , the barrel drum 34 carries, on its periphery (and more precisely, in the example illustrated, on the periphery of its skirt 54), a toothed crown 57 with asymmetric teeth, and the repeat 5 comprises a pawl 58 for locking in taken with this toothed crown 57, to block the rotation of the barrel drum 34 in the unwinding direction of the chain 40.

Selon un mode préféré de réalisation illustré sur la FIG.8, le rochet 47 est formé de manière intégrale avec le pivot 48. Le rochet 47 se présente avantageusement sous forme d'un disque. Dans l'exemple illustré, le rochet 47 intègre une dent 59. Comme on le voit bien sur les FIG.7, FIG.10 et FIG.12, la dent 59 fait saillie, radialement, de la périphérie du rochet 47.According to a preferred embodiment illustrated in FIG. 8 , the ratchet 47 is formed integrally with the pivot 48. The ratchet 47 is advantageously in the form of a disc. In the example illustrated, the ratchet 47 incorporates a tooth 59. As can be clearly seen on the FIG. 7 , FIG. 10 and FIG. 12 , tooth 59 protrudes radially from the periphery of ratchet 47.

Le barillet 32 de sonnerie comprend un ressort 60 de poulie, fonctionnant en torsion et interposé entre le rochet 47 et la poulie 38, et qui exerce sur celle-ci un couple résistant qui maintient la chaîne 40 sous tension lorsque le rochet 47 est découplé en rotation de la poulie 48.The striking barrel 32 comprises a pulley spring 60, operating in torsion and interposed between the ratchet 47 and the pulley 38, and which exerts on the latter a resistant torque which keeps the chain 40 under tension when the ratchet 47 is decoupled in pulley rotation 48.

Selon un mode préféré de réalisation illustré sur les FIG.7, FIG.10 et FIG.12, le ressort 60 de poulie est un ressort spiral dont une extrémité 61 interne est solidaire du rochet 47, et dont une extrémité 62 externe est solidaire de la poulie 38. Le ressort 60 de poulie peut être fabriqué en acier à haute limite élastique. En variante, il peut être réalisé en silicium.According to a preferred embodiment illustrated on FIG. 7 , FIG. 10 and FIG. 12 , the pulley spring 60 is a spiral spring, one internal end 61 of which is integral with the ratchet 47, and one external end 62 of which is integral with the pulley 38. The pulley spring 60 can be made of high elastic limit steel. As a variant, it can be made of silicon.

Dans l'exemple illustré, l'extrémité 61 interne du ressort 60 de poulie est conformée en un premier piton emboîté dans une encoche 63 complémentaire formée dans le rochet 47 (voir les cercles de détail en haut et à droite sur la FIG.4). Par ailleurs, l'extrémité 62 externe du ressort 60 de poulie est conformée en un deuxième piton emboîté dans une encoche 64 complémentaire formée dans la poulie 38 (voir les cercles de détail à gauche sur la FIG.4).In the example illustrated, the internal end 61 of the pulley spring 60 is shaped as a first eyelet fitted into a complementary notch 63 formed in the ratchet 47 (see the detail circles at the top and on the right on the FIG. 4 ). Furthermore, the outer end 62 of the pulley spring 60 is shaped as a second eyelet nested in a complementary notch 64 formed in the pulley 38 (see the detail circles on the left on the FIG. 4 ).

Comme illustré sur les FIG.4, FIG.7, FIG.10 et FIG.12, la poulie 38 intègre une butée 65. Cette butée 65 est par ex. formée au voisinage de la périphérie de la poulie 38. Dans l'exemple illustré, la butée 65 se présente sous forme d'une goupille rapportée, chassée dans un alésage ménagé dans la poulie 38.As shown on FIG. 4 , FIG. 7 , FIG. 10 and FIG. 12 , the pulley 38 incorporates a stop 65. This stop 65 is eg. formed in the vicinity of the periphery of the pulley 38. In the example illustrated, the stop 65 is in the form of an attached pin, driven into a bore made in the pulley 38.

La dent 59 du rochet 47 est appliquée contre la butée 65 tant que la chaîne 40 exerce sur la poulie 38 un effort de traction. A contrario, la dent 59 du rochet est écartée angulairement de la butée 65 dès lors que s'annule l'effort de traction exercé sur la chaîne 40 par la pièce 10 des heures en position de lecture.The tooth 59 of the ratchet 47 is applied against the stop 65 as long as the chain 40 exerts a tensile force on the pulley 38. Conversely, the tooth 59 of the ratchet is angularly spaced from the stop 65 as soon as the tensile force exerted on the chain 40 by the hour part 10 in the reading position is canceled.

Ainsi que représenté sur les FIG.4 et FIG.5, la répétition 5 comprend, en septième lieu :

  • Une crémaillère 66 montée en rotation autour d'un axe A5 de crémaillère fixe, et pourvue d'un secteur 67 denté ;
  • Un rouage 68 de sonnerie en relation d'engrenage d'une part avec la crémaillère 66 et d'autre part avec l'arbre 33 de barillet.
As shown on the FIG. 4 and FIG. 5 , repetition 5 comprises, in the seventh place:
  • A rack 66 mounted in rotation about a fixed rack axis A5, and provided with a toothed sector 67;
  • A striking gear 68 in gearing relation on the one hand with the rack 66 and on the other hand with the barrel shaft 33.

La crémaillère 66 présente une forme de crochet. La crémaillère 66 est pourvue d'un alésage 69 par lequel elle est montée sur son axe A5. De part et d'autre de cet alésage 69, la crémaillère 66 comprend un levier 70 portant à son extrémité un bouton 71 (qui, dans l'exemple illustré, est rapporté et chassé dans un trou formé dans l'extrémité du levier 70), et un bras 72 coudé dans lequel est formé le secteur 67 denté.The rack 66 has the shape of a hook. The rack 66 is provided with a bore 69 through which it is mounted on its axis A5. On either side of this bore 69, the rack 66 comprises a lever 70 carrying at its end a button 71 (which, in the example illustrated, is attached and driven into a hole formed in the end of the lever 70) , and a bent arm 72 in which the toothed sector 67 is formed.

La crémaillère 66 est montée en rotation autour de son axe A5 entre une position de repos (FIG.6) et une position d'armement complet (FIG.11 ).The rack 66 is mounted in rotation around its axis A5 between a rest position ( FIG. 6 ) and a fully armed position ( FIG. 11 ).

Selon un mode de réalisation illustré sur les FIG.4, FIG.5, FIG.6, FIG.9 et FIG.11, le rouage 68 de sonnerie comprend un pignon 73 d'entrée engrenant la crémaillère 66, et un pignon 74 de sortie solidaire en rotation de l'arbre 33 de barillet (à cet effet le pignon 74 est par exemple pourvu en son centre d'une empreinte carrée complémentaire de la tête 51 de l'arbre 33 de barillet).According to an embodiment illustrated on FIG. 4 , FIG. 5 , FIG. 6 , FIG. 9 and FIG. 11 , the striking gear 68 comprises an input pinion 73 meshing with the rack 66, and an output pinion 74 integral in rotation with the barrel shaft 33 (for this purpose the pinion 74 is for example provided at its center with a square footprint complementary to the head 51 of the barrel shaft 33).

Dans l'exemple illustré, le rouage 68 de sonnerie comprend en outre un pignon 75 multiplicateur (partiellement arraché sur les FIG.6, FIG.9 et FIG.11) solidaire en rotation du pignon 73 d'entrée et engrenant le pignon 74 de sortie.In the example illustrated, the striking gear 68 further comprises a multiplier pinion 75 (partially cut off on the FIG. 6 , FIG. 9 and FIG. 11 ) integral in rotation with the input pinion 73 and meshing with the output pinion 74.

La crémaillère 66 et les pignons 73, 74, 75 du rouage 68 de sonnerie sont dimensionnés et agencés pour que la course angulaire totale de la crémaillère 66 entre sa position de repos et sa position d'armement complet corresponde à un tour presque complet de la poulie 38, induisant un déroulement presque total de la chaîne 40 du chemin 39 de came.The rack 66 and the pinions 73, 74, 75 of the striking gear 68 are dimensioned and arranged so that the total angular travel of the rack 66 between its rest position and its fully cocked position corresponds to an almost complete revolution of the pulley 38, inducing an almost total unwinding of the chain 40 of the cam path 39.

Dans l'exemple illustré, la crémaillère 66 comprend douze dents (dont neuf et demie sont utiles lors de la course de la crémaillère 66 entre la position de repos et la position d'armement complet) ; le pignon 73 d'entrée comprend quatorze dents ; le pignon 75 multiplicateur comprend vingt-deux dents et le pignon 74 de sortie comprend quinze dents. De la sorte, le rapport de transmission entre la crémaillère 66 et le pignon de sortie (c'est-à-dire l'arbre 33 de barillet, et donc le rochet 47) est de 0,99. En d'autres termes, à la course totale de la crémaillère 66 (entre sa position de repos et sa position d'armement complet) correspond une rotation du rochet de 358°.In the example illustrated, the rack 66 comprises twelve teeth (nine and a half of which are useful during the travel of the rack 66 between the rest position and the fully cocked position); the input pinion 73 comprises fourteen teeth; the multiplier pinion 75 comprises twenty-two teeth and the output pinion 74 comprises fifteen teeth. In this way, the transmission ratio between the rack 66 and the output pinion (that is to say the barrel shaft 33, and therefore the ratchet 47) is 0.99. In other words, on the run total of the rack 66 (between its rest position and its fully cocked position) corresponds to a rotation of the ratchet of 358 °.

Comme on le voit dans le médaillon de détail en bas à droite sur la FIG.4, et également sur les FIG.6, FIG.9 et FIG.11, la crémaillère 66 est avantageusement pourvue, à l'extrémité libre du secteur 67 denté, d'une butée 76 d'arrêt, qui se présente ici sous forme d'une pièce rapportée chassée, et qui, en position d'armement complet de la crémaillère 66, vient se caler contre le pignon 73 d'entrée qui forme ainsi une butée de fin de course pour celle-ci.As seen in the lower right detail medallion on the FIG. 4 , and also on FIG. 6 , FIG. 9 and FIG. 11 , the rack 66 is advantageously provided, at the free end of the toothed sector 67, with a stopper 76, which is here in the form of a driven insert, and which, in the fully cocked position of the rack 66 wedges against the input pinion 73 which thus forms an end-of-travel stop for the latter.

Selon un mode préféré de de réalisation, la butée 76, bien que montée serrée par chassage, peut tolérer un débattement angulaire, de sorte à former un excentrique permettant à l'horloger de régler finement la position angulaire de la crémaillère 66 (et donc la position angulaire correspondante du rochet 47) en fin de course dans sa position d'armement complet.According to a preferred embodiment, the stop 76, although mounted tightly by driving in, can tolerate an angular displacement, so as to form an eccentric allowing the watchmaker to finely adjust the angular position of the rack 66 (and therefore the corresponding angular position of the ratchet 47) at the end of the stroke in its fully cocked position.

Comme illustré sur la FIG.1, la montre 1 est équipée d'un poussoir 77. Ce poussoir 77 est monté en translation par rapport à la carrure 2 entre :

  • une position désarmée dans laquelle le poussoir 77 n'exerce pas de couple moteur sur la crémaillère 66, et
  • une position d'armement dans laquelle le poussoir 77 exerce sur la crémaillère 66 une poussée (indiquée par les flèches blanches en bas sur les FIG.9, FIG.10 et FIG.12) générant un couple moteur qui entraîne en rotation l'arbre 33 de barillet via le rouage 68 de sonnerie.
As shown on the FIG. 1 , watch 1 is equipped with a pusher 77. This pusher 77 is mounted in translation with respect to the middle part 2 between:
  • a disarmed position in which the pusher 77 does not exert any driving torque on the rack 66, and
  • a cocking position in which the pusher 77 exerts a thrust on the rack 66 (indicated by the white arrows at the bottom of the FIG. 9 , FIG. 10 and FIG. 12 ) generating a motor torque which drives the barrel shaft 33 in rotation via the striking gear 68.

La répétition 5 fonctionne de la manière suivante, étant entendu que le tambour 34 de barillet, retenu par le cliquet 58 de blocage, ne peut tourner autour de l'axe A4 de barillet que dans le sens indiqué par la flèche X1 (FIG.3).Repetition 5 operates as follows, it being understood that the barrel drum 34, retained by the locking pawl 58, can only rotate around the barrel axis A4 in the direction indicated by the arrow X1 ( FIG. 3 ).

La crémaillère 66 est en permanence rappelée vers sa position de repos par l'effort de torsion du ressort 35 de barillet enroulé en force sur l'axe 33 de barillet.The rack 66 is permanently returned to its rest position by the torsional force of the spring 35 of the barrel forcefully wound on the axis 33 of the barrel.

Tant qu'aucune pression n'est exercée sur le poussoir 77, la crémaillère 66 occupe sa position de repos. Comme l'extrémité 37 externe du ressort 35 de barillet est fixe, puisque solidaire du tambour 34 de barillet lui-même retenu par le cliquet 58 en prise avec la couronne 57 dentée, le ressort 35 de barillet exerce sur l'arbre 33 de barillet un couple moteur dans le sens de la flèche X1 (FIG.3). Nous avons vu que le rochet 47 est solidaire en rotation de l'arbre 33 de barillet. Ce couple se transmet donc au rochet 47, dont la dent 59 vient s'appliquer (dans le sens horaire sur la FIG.7) sur la butée 65 dont est pourvue la poulie 38. De la sorte, le couple moteur est transmis à la poulie 38, qui exerce ainsi une traction sur la chaîne 40 (dans le sens indiqué par la flèche Y1 sur la FIG.3), traction dont la force est déterminée par le rapport du couple moteur induit par l'arbre 33 de barillet au rayon de la poulie 38 à l'endroit où la chaîne la quitte.As long as no pressure is exerted on the pusher 77, the rack 66 occupies its rest position. As the outer end 37 of the barrel spring 35 is fixed, since it is integral with the barrel drum 34 itself retained by the pawl 58 in engagement with the toothed crown 57, the barrel spring 35 exerts on the barrel shaft 33 a motor torque in the direction of arrow X1 ( FIG. 3 ). We have seen that the ratchet 47 is integral in rotation with the barrel shaft 33. This torque is therefore transmitted to ratchet 47, whose tooth 59 is applied (in clockwise on the FIG. 7 ) on the stop 65 with which the pulley 38 is provided. In this way, the engine torque is transmitted to the pulley 38, which thus exerts a traction on the chain 40 (in the direction indicated by the arrow Y1 on the FIG. 3 ), traction whose force is determined by the ratio of the driving torque induced by the barrel shaft 33 to the radius of the pulley 38 at the point where the chain leaves it.

Cette force de traction, très supérieure à l'effort résistant induit sur la chaîne 40 (via la pièce 10 des heures à laquelle celle-ci est accrochée) par le couple résistant généré par le ressort 19 des heures, tend à déplacer la pièce 10 des heures en rotation dans le sens indiqué par la flèche Z1 sur la FIG.3 et la maintient par conséquent dans sa position de repos, l'extrémité du bras 17 extérieur (auquel est accroché la chaîne 40) étant bloqué contre le palier 45 de renvoi.This tensile force, much greater than the resistive force induced on the chain 40 (via the part 10 of the hours to which it is attached) by the resistive torque generated by the spring 19 of the hours, tends to move the part 10 hours rotating in the direction indicated by arrow Z1 on the FIG. 3 and consequently maintains it in its rest position, the end of the outer arm 17 (to which the chain 40 is attached) being blocked against the return bearing 45.

La répétition 5 est actionnée par le porteur au moyen d'une pression exercée radialement sur le poussoir 77, en direction du centre de la carrure 2 (flèche blanche, en bas sur la FIG.9 et sur la FIG.10).The repeater 5 is actuated by the wearer by means of a pressure exerted radially on the pusher 77, in the direction of the center of the caseband 2 (white arrow, at the bottom on the FIG. 9 and on the FIG. 10 ).

Le poussoir 77 vient appuyer sur le bouton 71 qu'il déplace en faisant pivoter, via le levier 70, la crémaillère 66 autour de son axe A5, dans le sens indiqué sur les FIG.9 et FIG.10 par la flèche F1.The pusher 77 presses the button 71 which it moves by pivoting, via the lever 70, the rack 66 around its axis A5, in the direction indicated on the FIG. 9 and FIG. 10 by arrow F1.

La crémaillère 66, qui engrène le pignon 73 d'entrée, entraîne celui-ci en rotation dans le sens indiqué sur la FIG.9 par la flèche F2. Le pignon 75 multiplicateur, qui est solidaire en rotation du pignon 73 d'entrée, tourne dans le même sens (flèche F3). Il engrène à son tour le pignon 74 de sortie, qui est entraîné en rotation dans le sens inverse (flèche F4).The rack 66, which meshes the input pinion 73, drives the latter in rotation in the direction indicated on the FIG. 9 by arrow F2. The multiplier pinion 75, which is integral in rotation with the input pinion 73, rotates in the same direction (arrow F3). It in turn engages the output pinion 74, which is rotated in the opposite direction (arrow F4).

L'arbre 33 de barillet, solidaire du pignon 74 de sortie et du rochet 47, entraîne celui-ci dans le sens de rotation du pignon 74 de sortie (flèche F5, FIG.10), en armant le ressort 35 de barillet. En effet, l'arbre 33 de barillet entraîne dans sa rotation l'extrémité 36 interne du ressort 35 de barillet tandis que l'extrémité 37 externe de celui-ci demeure fixe en rotation avec le tambour 34 de barillet, lequel est retenu par le cliquet 58 en prise avec la couronne 57 dentée.The barrel shaft 33, integral with the output pinion 74 and the ratchet 47, drives the latter in the direction of rotation of the output pinion 74 (arrow F5, FIG. 10 ), by charging the spring 35 of the barrel. In fact, the barrel shaft 33 drives in its rotation the internal end 36 of the barrel spring 35 while the external end 37 thereof remains fixed in rotation with the barrel drum 34, which is retained by the barrel. pawl 58 engaged with the toothed crown 57.

Pendant ce temps, la chaîne 40 est tractée (flèche Y2, FIG.3 et flèche F6, FIG.10) par la pièce 10 des heures, laquelle est rappelée (flèche Z2, FIG.3) par le ressort 19 des heures. Cette traction a pour effet de faire tourner la poulie (flèche X2, FIG.3 et flèche F7, FIG.9 et FIG.10), puisque le rochet 47 ne la retient plus et que le ressort 19 des heures exerce sur la pièce 10 des heures un couple moteur supérieur au couple résistant (flèche F8) exercé sur la poulie 38 par le ressort 60 de poulie. Tant que la pièce 10 des heures n'est pas parvenue à sa position de lecture, la poulie 38 peut poursuivre sa rotation, permise par la rotation du rochet 47. Tout ce temps, la butée 65 demeure en appui contre la dent 59 du rochet 47.During this time, the chain 40 is pulled (arrow Y2, FIG. 3 and arrow F6, FIG. 10 ) by part 10 of the hours, which is recalled (arrow Z2, FIG. 3 ) by spring 19 hours. This traction has the effect of rotating the pulley (arrow X2, FIG. 3 and arrow F7, FIG. 9 and FIG. 10 ), since the ratchet 47 no longer retains it and the hours spring 19 exerts a couple of hours on the part 10 motor greater than the resistive torque (arrow F8) exerted on the pulley 38 by the pulley spring 60. As long as the hours part 10 has not reached its reading position, the pulley 38 can continue its rotation, permitted by the rotation of the ratchet 47. All this time, the stop 65 remains in contact with the tooth 59 of the ratchet. 47.

Pour toute autre heure lue que 12h59, la pièce 10 des heures parvient à sa position de lecture avant que la crémaillère 66 n'atteigne sa position d'armement complet. Dès lors, la pièce 10 des heures n'exerce plus de traction sur la chaîne 40, qui à son tour n'exerce plus de couple moteur sur la poulie 38. Cependant, mu par la crémaillère 66 via le rouage 68 de sonnerie, le rochet 47 poursuit sa rotation dans le sens indiqué par la flèche F5, de sorte que la dent 59 s'écarte angulairement de la butée 65. Comme le ressort 60 de poulie conserve, quelle que soit la position angulaire relative du rochet 47 et de la poulie 38, une réserve de couple, il continue d'exercer un couple résistant (flèche F8, FIG.12) sur la poulie 38 qui, au lieu de devenir folle et de laisser flotter la chaîne 40, maintient celle-ci sous tension (flèche F10, FIG.12).For any other time read than 12:59, the 10 o'clock piece reaches its reading position before the rack 66 reaches its fully armed position. Consequently, the hour part 10 no longer exerts traction on the chain 40, which in turn no longer exerts any engine torque on the pulley 38. However, moved by the rack 66 via the striking gear 68, the ratchet 47 continues to rotate in the direction indicated by arrow F5, so that tooth 59 angularly moves away from stop 65. As pulley spring 60 maintains, regardless of the relative angular position of ratchet 47 and pulley 38, a torque reserve, it continues to exert a resistant torque (arrow F8, FIG. 12 ) on pulley 38 which, instead of going crazy and letting chain 40 float, keeps it under tension (arrow F10, FIG. 12 ).

Lorsque l'heure lue est 12h59, la pièce 10 des heures parvient à sa position de lecture en même temps que la crémaillère 66 atteint sa position d'armement complet. La butée 65 de la poulie 38 demeure en contact avec la dent 59 du rochet 47 sur toute leur course angulaire, et la chaîne 40 demeure tendue en permanence.When the time read is 12.59 hrs, the hour part 10 reaches its reading position at the same time as the rack 66 reaches its fully cocked position. The stop 65 of the pulley 38 remains in contact with the tooth 59 of the ratchet 47 over their entire angular travel, and the chain 40 remains permanently tensioned.

Quoi qu'il en soit, l'appui sur le poussoir 77 est maintenu jusqu'à ce que la crémaillère 66 ait atteint sa position d'armement complet lorsque la butée d'arrêt 76 vient se caler contre le pignon 73 d'entrée (FIG.11). Du point de vue du porteur, le poussoir 77 (et donc la sonnerie) fonctionne en tout-ou-rien, c'est-à-dire que le poussoir 77 doit être enfoncé complètement quelle que soit l'heure à sonner.In any event, the pressure on the pusher 77 is maintained until the rack 66 has reached its fully loaded position when the stopper 76 comes to be wedged against the input pinion 73 ( FIG. 11 ). From the wearer's point of view, the push-button 77 (and therefore the bell) operates in all-or-nothing mode, that is to say that the push-button 77 must be fully depressed regardless of the time to strike.

Lorsque le poussoir 77 est relâché, le ressort 35 de barillet, dont l'extrémité 37 externe est demeurée (et demeure) fixe, rappelle l'arbre 33 de barillet (et donc le rochet 47) vers sa position initiale. Lorsque l'heure lue est 12h59, la dent 59 est appliquée contre la butée 65 et le rochet 47 entraîne immédiatement la poulie 38 dans sa rotation. Pour toute autre heure lue que 12h59, le rochet 47 pivote d'abord autour de l'axe A4 de barillet sans entraîner la poulie 38 jusqu'à ce que la dent 59 vienne au contact de la butée 65. Dès lors, la poulie 38 et le rochet 47 sont à nouveau solidaires en rotation, et sont conjointement rappelés vers leur position initiale (flèche X1, FIG.3) par le couple moteur exercé sur l'arbre 33 de barillet (et donc le rochet 47, et donc la poulie 38) par le ressort 35 de barillet, ce couple moteur étant bien supérieur au couple résistant exercé sur la pièce 10 des heures par le ressort 19 des heures. Il en résulte que la chaîne 40 est tractée (flèche Y1, FIG.3) par la poulie 38 sur laquelle elle s'enroule au fur et à mesure de la rotation de celle-ci, jusqu'à ce que la pièce 10 des heures, rappelée vers sa position de repos (flèche Z1, FIG.3) ait retrouvé celle-ci en venant buter contre le palier 45 de renvoi.When the pusher 77 is released, the barrel spring 35, the outer end 37 of which has remained (and remains) fixed, returns the barrel shaft 33 (and therefore the ratchet 47) to its initial position. When the time read is 12:59, tooth 59 is applied against stop 65 and ratchet 47 immediately drives pulley 38 in its rotation. For any other time read than 12:59, the ratchet 47 first pivots around the barrel axis A4 without driving the pulley 38 until the tooth 59 comes into contact with the stop 65. Consequently, the pulley 38 and the ratchet 47 are again integral in rotation, and are jointly recalled to their initial position (arrow X1, FIG. 3 ) by the driving torque exerted on the barrel shaft 33 (and therefore the ratchet 47, and therefore the pulley 38) by the barrel spring 35, this engine torque being much greater than the resistive torque exerted on the part 10 of the hours by spring 19 o'clock. As a result, the chain 40 is pulled (arrow Y1, FIG. 3 ) by the pulley 38 on which it winds as the rotation of the latter, until part 10 of the hours, returned to its rest position (arrow Z1, FIG. 3 ) found it by coming up against the return bearing 45.

Parvenue dans sa position de repos, la pièce 10 des heures bloque la chaîne 40, qui à son tour bloque la rotation de la poulie 38, qui bloque la rotation du rochet 47, qui bloque la rotation de l'arbre 33 de barillet et avec lui le rouage 68 de sonnerie et la crémaillère 66. Le poussoir 77, repoussé par la crémaillère 66 via le bouton, retrouve quant à lui sa position de repos. La répétition 5 se retrouve ainsi bloquée.Having reached its rest position, the hour piece 10 blocks the chain 40, which in turn blocks the rotation of the pulley 38, which blocks the rotation of the ratchet 47, which blocks the rotation of the barrel shaft 33 and with it is the striking gear 68 and the rack 66. The push-button 77, pushed back by the rack 66 via the button, for its part returns to its rest position. Repetition 5 is thus blocked.

Pendant toute la course accompagnant le relâchement du poussoir 77, la pièce 10 des heures, la pièce 22 des quarts et la pièce 24 des minutes ont, ensemble (et de la manière expliquée plus haut), sonné l'heure affichée.During the entire stroke accompanying the release of the push-button 77, the hour part 10, the quarter part 22 and the minute part 24 together (and in the manner explained above) struck the displayed time.

Les avantages procurés par la répétition 5 sont déterminants : alors même que le poussoir 77 fonctionne en tout-ou-rien, et qu'il est poussé à fond quelle que soit l'heure à sonner, la chaîne 40 demeure en permanence maintenue en tension. Outre l'aspect esthétique (le flottement de la chaîne pourrait être considéré comme un défaut par l'amateur exigeant), les pics de contrainte subis par la chaîne 40 sont évités, au bénéfice de sa longévité - et de celle de l'ensemble de la répétition 5. Au final, la fatigue mécanique subie par la chaîne 40 et l'ensemble des pièces mobiles de la répétition 5 est limitée.The advantages provided by repetition 5 are decisive: even though the push-button 77 operates in all-or-nothing mode, and that it is pushed to the limit whatever the hour to strike, the chain 40 remains permanently maintained under tension. . In addition to the aesthetic aspect (the fluttering of the chain could be considered a defect by the demanding hobbyist), the stress peaks undergone by the chain 40 are avoided, to the benefit of its longevity - and that of the whole. repetition 5. In the end, the mechanical fatigue undergone by the chain 40 and all the moving parts of repetition 5 is limited.

Claims (10)

  1. Repeater mechanism (5) for a timepiece (1) with a striking mechanism, which comprises:
    - An hour snail (6);
    - An hour part (10) bearing an hour feeler-spindle (11) and mounted in rotation about an hour axis (A1) between:
    • A resting position in which the hour feeler-spindle (11) is offset angularly from the hour snail (6);
    • A reading position in which the hour feeler-spindle (11) comes in contact with the hour snail (7);
    - An hour spring (19) which returns the hour part (10) towards its reading position;
    - A striking mechanism barrel (32), which comprises:
    ∘ A barrel shaft (33);
    ∘ A barrel drum (34),
    ∘ A barrel spring (35), an internal end (36) of which is integral with the barrel shaft (33) and an external end (37) of which is integral with the barrel drum (34);
    ∘ A pulley (38);
    - A chain (40) which is able to be wound up partially on the pulley (38), the chain (40) being hooked, by a proximal end (41), on the pulley (38) and, by a distal end (42), on the hour part (10);
    characterised in that the pulley (38) is mobile in rotation relative to the barrel shaft (33), and the striking mechanism barrel (32) comprises:
    - A ratchet (47), integral in rotation with the barrel shaft (33) and:
    • coupled in rotation with the pulley (38) as long as the hour part (10) exerts a traction force on the chain (40);
    • uncoupled in rotation from the pulley (38) as soon as the traction force exerted on the chain (40) by the hour part (10) in the reading position is cancelled out;
    - A pulley spring (60) interposed between the ratchet (47) and the pulley (38), and which exerts on the latter a resistant torque which keeps the chain (40) under tension when the ratchet (47) is uncoupled in rotation from the pulley (38).
  2. Mechanism (5) according to claim 1, in which the pulley spring (60) is a spiral spring, an internal end (61) of which is integral with the ratchet (47), and an external end (62) of which is integral with the pulley (38).
  3. Mechanism (5) according to claim 1 or claim 2, characterised in that the pulley (38) integrates a limit stop (65), and the ratchet (47) integrates a tooth (59) which is applied against the limit stop (65) as long as the chain (40) exerts a traction force on the pulley (38), and which is offset angularly therefrom as soon as the traction force exerted on the chain (40) by the hour part (10) in the reading position is cancelled out.
  4. Mechanism (5) according to one of the preceding claims, which furthermore comprises:
    - A rack (66) mounted in rotation about an axis (A5) and provided with a toothed sector (67);
    - A striking mechanism train (68) meshing, on the one hand, with the toothed sector (67) of the rack (66) and, on the other hand, with the barrel shaft (33).
  5. Mechanism (5) according to claim 4, in which the striking mechanism train (68) comprises an input pinion (73) which meshes with the toothed sector (67) of the rack (66), and an output pinion (74) which is integral in rotation with the barrel shaft (33).
  6. Mechanism (5) according to claim 5, characterised in that the striking mechanism train (68) comprises a multiplier pinion (75) which is integral in rotation with the input pinion (73) and meshes with the output pinion (74).
  7. Mechanism (5) according to one of the preceding claims, which comprises a locking pawl (58) which is in engagement with a toothed crown (57) with asymmetrical toothing carried by the barrel drum (34).
  8. Mechanism (5) according to one of the preceding claims, which comprises a return bearing (45) on which the chain (40) runs between the striking mechanism barrel (32) and the hour part (10).
  9. Watch (1) equipped with a middle (2) and a repeater mechanism (5) according to one of the preceding claims, mounted in the middle (2).
  10. Watch (1) equipped with a middle (2), a repeater mechanism (5) according to claim 4 and a push button (77) mounted in translation on the middle (2) between a disarmed position in which the push button (77) does not exert a motor torque on the rack (66), and an armed position in which the push button (77) exerts a motor torque on the rack (66) which causes rotation of the barrel shaft (34) via the striking mechanism train (68).
EP17209994.7A 2017-12-22 2017-12-22 Repetition mechanism with tensioned chain Active EP3502795B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP17209994.7A EP3502795B1 (en) 2017-12-22 2017-12-22 Repetition mechanism with tensioned chain
US16/143,795 US11073797B2 (en) 2017-12-22 2018-09-27 Repeater mechanism with tensioned chain
JP2018201535A JP6644124B2 (en) 2017-12-22 2018-10-26 Repeater mechanism with stretched chains
CN201811352532.6A CN109960130B (en) 2017-12-22 2018-11-14 Meter-reading mechanism with tensioning chain

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17209994.7A EP3502795B1 (en) 2017-12-22 2017-12-22 Repetition mechanism with tensioned chain

Publications (2)

Publication Number Publication Date
EP3502795A1 EP3502795A1 (en) 2019-06-26
EP3502795B1 true EP3502795B1 (en) 2020-09-23

Family

ID=60782032

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17209994.7A Active EP3502795B1 (en) 2017-12-22 2017-12-22 Repetition mechanism with tensioned chain

Country Status (4)

Country Link
US (1) US11073797B2 (en)
EP (1) EP3502795B1 (en)
JP (1) JP6644124B2 (en)
CN (1) CN109960130B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3502794B1 (en) * 2017-12-22 2020-10-21 Montres Breguet S.A. Repetition with chain wound onto a cam
CH716878A1 (en) * 2019-12-02 2021-06-15 Bucherer Ag Striking mechanism, wristwatch and regulator.
USD957267S1 (en) * 2020-01-09 2022-07-12 Montres Breguet Sa (Montres Breguet Ag) (Montres B Watch case

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2831191Y (en) * 2005-09-15 2006-10-25 杭州手表有限公司 Two-question time-telling mechanism for clock
EP1845425B1 (en) * 2006-04-12 2011-07-13 Montres Breguet S.A. Chiming timepiece with a single barrel
EP2498143B1 (en) * 2011-03-08 2018-05-02 Montres Breguet SA Isolation mechanism between timepiece mechanisms for setting off different acoustic signals
EP2498146B1 (en) * 2011-03-08 2018-07-18 Montres Breguet SA Grande sonnerie wake-up alarm mechanism
CH707271A2 (en) * 2012-11-27 2014-05-30 Montres Breguet Sa Watch movement unit, has winding roller arranged to slide on fixed guide transversely with wire, while being engaged in spiral groove so as to traverse groove, and wire inserted in groove when spindle turns in one direction
CH707273B1 (en) * 2012-11-28 2017-03-15 Red & White Intellectual Property Man Sa Ring mechanism.
EP3070543A1 (en) * 2015-03-18 2016-09-21 Glashütter Uhrenbetrieb GmbH Repetition striking mechanism with integrated trigger lock
EP3339976A1 (en) * 2016-12-23 2018-06-27 Blancpain SA Mechanical watch with repeater

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
US11073797B2 (en) 2021-07-27
EP3502795A1 (en) 2019-06-26
US20190196409A1 (en) 2019-06-27
CN109960130A (en) 2019-07-02
CN109960130B (en) 2021-02-02
JP2019113527A (en) 2019-07-11
JP6644124B2 (en) 2020-02-12

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