EP3783444A1 - Timepiece mechanism comprising a locking device - Google Patents

Timepiece mechanism comprising a locking device Download PDF

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Publication number
EP3783444A1
EP3783444A1 EP19192436.4A EP19192436A EP3783444A1 EP 3783444 A1 EP3783444 A1 EP 3783444A1 EP 19192436 A EP19192436 A EP 19192436A EP 3783444 A1 EP3783444 A1 EP 3783444A1
Authority
EP
European Patent Office
Prior art keywords
locking
stop
stop wheel
spout
mechanism according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19192436.4A
Other languages
German (de)
French (fr)
Other versions
EP3783444B1 (en
Inventor
Pascal Perron
David Chabloz
Lukas Gisler
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.)
Patek Philippe SA Geneve
Original Assignee
Patek Philippe SA Geneve
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 Patek Philippe SA Geneve filed Critical Patek Philippe SA Geneve
Priority to EP19192436.4A priority Critical patent/EP3783444B1/en
Publication of EP3783444A1 publication Critical patent/EP3783444A1/en
Application granted granted Critical
Publication of EP3783444B1 publication Critical patent/EP3783444B1/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
    • G04B15/00—Escapements
    • G04B15/10—Escapements with constant impulses for the regulating 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
    • G04B1/00—Driving mechanisms
    • G04B1/10—Driving mechanisms with mainspring
    • G04B1/22—Compensation of changes in the motive power of the mainspring
    • G04B1/225—Compensation of changes in the motive power of the mainspring with the aid of an interposed power-accumulator (secondary spring) which is always tensioned
    • 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

Definitions

  • the present invention relates to a horological mechanism provided with a cog and a device for blocking said cog, said blocking device comprising a stop mobile arranged to be able to be driven in rotation by the cog and formed of a wheel. stopper and a pinion, said stopper wheel being arranged to carry a locking nose, and a locking member movable between a first stop position in which the locking member cooperates with the locking nose to stop the stop mobile in order to immobilize the gear train and a second position in which the locking member does not cooperate with the stop mobile.
  • Such a mechanism is used for example in a watch movement comprising an equalizer winder or a so-called “constant force” device, that is to say a watch movement comprising between its driving member and its escapement an intermediate spring which is periodically armed by the engine and which delivers its energy to the exhaust.
  • Such a watch movement is described in the patent EP 3,401,739 of the plaintiff.
  • the watch movement is arranged to operate according to a cycle comprising a first phase during which the blocking member blocks the stop piece, placed at the end of the gear, to immobilize said gear, allowing the intermediate spring to relax, and a second phase triggered by the release of the gear train by the locking member during which the intermediate spring is reset and the locking member is returned to a position in which it can again immobilize the gear train.
  • the stopping mobile performs a 360 ° rotation before being stopped again by the blocking member.
  • the present invention aims to remedy these drawbacks by proposing a device for blocking a rotating mobile device allowing said mobile to be stopped in a safe manner without having a violent impact between the locking device and said mobile.
  • the present invention relates to a watch mechanism provided with a cog and a device for blocking said cog, said blocking device comprising a stop mobile arranged to be able to be rotated by the cog and formed of a stop wheel and a pinion, said stop wheel being arranged to carry a locking spout, and a locking member movable between a first stop position in which the locking member cooperates with the spout of blocking to stop the stop mobile in order to immobilize the gear train and a second position in which the blocking member does not cooperate with the stop mobile.
  • the locking device comprises an elastic member carried by the stop wheel of the stop mobile and arranged to connect the blocking spout to said stop wheel and to allow, upon impact between the 'locking member and the locking spout, a damping of said shock comprising at least one elastic part.
  • the elastic member is arranged to allow, during an impact between the locking member and the locking nose, a damping of said shock comprising an elastic part but also an energy dissipative part, preferably by friction.
  • the locking device according to the invention makes it possible to reduce the maximum force of an impact between the locking device and the rotating mobile when the rotating mobile is locked and to increase the duration of this shock, so that the problems associated with a violent impact between the locking device and said moving body (namely in particular wear, but also deformation and the torque of resistance to rotation) are eliminated.
  • the present invention also relates to a timepiece, such as a watch or a pendulum, comprising a watch mechanism as defined above.
  • the watch mechanism 1 comprises a driving member 2, typically constituted by a barrel, a gear 3 rotated by the driving member 2 and a locking device 4 of the gear train 3.
  • the gear train 3 comprises, in the example illustrated, a center mobile 3a meshing with the driving member 2, a medium mobile 3b meshing with the center mobile 3a, a second mobile 3c meshing with the average mobile 3b, a first intermediate mobile 3d meshing with the second mobile 3c, a second intermediate mobile 3rd meshing with the first intermediate mobile 3d.
  • Each of the mobile units 3a to 3e is formed of a toothed wheel and a coaxial and integral pinion.
  • the locking device 4 comprises a stop wheel 6 arranged to be driven in rotation by the gear train 3, when the gear train 3 is itself driven by the motor member 2. More specifically, the drive of the stop wheel set. 6 is made by meshing with the second intermediate mobile 3rd of said gear 3.
  • the stop mobile 6 is formed of a pinion 6a, arranged to mesh with the toothed wheel of the second intermediate mobile 3rd, and of a stop wheel (non-toothed) 6b coaxial with pinion 6a, and comprising in particular a body 6c coaxial and integral with said pinion 6a.
  • the stop wheel 6b is arranged to carry a blocking spout 8, shown in figures 1 and 2 in a simplified manner and which will be described more specifically below.
  • the locking device 4 also comprises a locking member 10 movable between a first stop position in which the locking member 10 cooperates with the locking beak 8 of the stop mobile 6 to stop said stop mobile 6 in order to immobilize the gear train 3 and a second position in which the locking member 10 has moved away and can therefore no longer cooperate with the stop mobile 6, allowing the release of said stop mobile 6 so that the gear train 3 is free to rotate under the action of the motor member 2.
  • the locking member 10 is presented in a manner advantageous in the form of a lever carrying a beak or nose 10a arranged to cooperate with the locking beak 8 of the stop piece 6.
  • the mechanism 1 also comprises a control member 12, such as a rocker, arranged to control the positioning of the locking member 10 in its first stop position as shown in FIG. figure 1 or in its second position, when the blocking member 10 is released from the stop piece 6, as shown in figure 2 .
  • a control member 12 such as a rocker
  • the mechanism 1 can be arranged to operate with a constant force device or an equality winder (not shown). Such a mechanism 1 is described in the application EP 3,401,739 by the Applicant, to which reference may be made for the detailed description of the elements relating to the constant force device and to its operation.
  • the horological mechanism according to the invention can be used in a watch or a clock, in particular a table clock.
  • the mechanism 1 can also be used in any other watch mechanism comprising a stopping system, and more particularly an instant stopping system generating violent shocks between the parts when the mechanism is blocked.
  • the mechanism could also be used, for example, in a striking mechanism, or in any horological mechanism comprising a motor train capable of operating in ON / OFF mode, such as a calendar, a date, a perpetual calendar.
  • the locking device 4 comprises an elastic member 14 carried by the stop wheel 6b of the stop mobile 6 and arranged to mechanically connect the blocking spout 8 to said stop wheel 6b and to allow , during an impact between the locking member 10 and the locking spout 8, a damping of said shock comprising at least one elastic part provided by the compression of the elastic member 14.
  • the elastic member 14 is carried by the body 6c of the wheel 6b of the stop piece 6 and has for this purpose a first end which is integral with said body 6c and a second end which is integral, directly or indirectly, of the locking spout 8, as will be described in more detail below.
  • the arrangement of the locking device 4 according to the invention allows uniquely elastic damping of the shocks between the locking member 10 and the locking spout 8.
  • the stop wheel 6b is formed only by the body 6c secured to the pinion 6a, itself secured to its shaft 16 pivotally mounted on the frame of the mechanism.
  • the elastic member 14 comprises a first end 14a which is integral with said body 6c and a second end 14b, free, integral with the locking spout 8.
  • the elastic member 14 and the locking spout 8 are formed integrally with the body 6c.
  • the body 6c of the stop wheel 6b comprises at least one cutout 18 arranged to form, in the remaining body 6c, the elastic member 14 as well as the locking spout 8, integrally, the second end 14b of the elastic member 14 being arranged to form the locking spout 8.
  • the body 6c may comprise a single cutout 18 made near the circular peripheral edge of the body 6c so as to form an elastic member 14 and an outer locking spout 8, at the periphery of said body 6c.
  • the remaining body 6c then has an ovoid shape, coaxial with the pinion 6a.
  • the body 6c of circular shape may comprise two cutouts 18 made in the inner surface of the body 6c, substantially concentric, so as to form an organ elastic 14 essentially internal, only its second end 14b protruding from the body 6c to form the locking spout 8 arranged to be able to cooperate with the nose 10a of the locking member 10.
  • the cutout (s) 18 is (are) preferably of substantially circular or at least rounded shape, in order to release a tongue of fine material, substantially curved, and of sufficient length to present the desired elastic functions and to constitute the 'elastic member 14.
  • the second end of the elastic member 14b is widened to form the locking spout 8.
  • the body 6c forming the stop wheel 6b is made for example of a metal alloy, such as steel, CuBe, Maillechort, brass, based on Ni, NiP, Nivaflex®, Phynox®, etc., of metallic glass. or silicon, so that the elastic member can have the required elastic properties.
  • a metal alloy such as steel, CuBe, Maillechort, brass, based on Ni, NiP, Nivaflex®, Phynox®, etc., of metallic glass. or silicon, so that the elastic member can have the required elastic properties.
  • the elastic member 14 and the locking spout 8 are attached to the body 6c.
  • the elastic member 14 is in the form of a spring arranged on the body 6c of the stop wheel 6b and the first end 14a of which is fixedly fixed to said body 6c and the second end 14b is free and is integral with the locking spout 8.
  • the second free end 14b of the resilient member 14 directly carries the locking spout 8 which can be integral with said second end 14b or attached, said locking spout 8 being arranged to cooperate with the nose 10a of the locking member 10. .
  • the arrangement of the locking device 4 according to the invention and of its elastic member 14 allows, upon impact between the locking member 10 and the locking spout 8, to have a damping of said shock comprising not only an elastic part as described above but also an energy dissipative part, advantageously obtained by friction.
  • the stop wheel 6b is formed only by the body 6c integral with the pinion 6a.
  • the elastic member 14 is in the form of a spring arranged on the body 6c of the stop wheel 6b and the first end 14a of which is fixedly fixed on said body 6c and the second end 14b is free and is fixed to the spout lock 8.
  • the body 6c carries a pin 20 and the second free end 14b of the elastic member 14 comprises an intermediate elongated housing 22 itself carrying the locking spout 8 which can be integral with said housing 20 or attached.
  • the housing 22 can be formed for example by a loop formed at the second end 14b of the elastic member 14.
  • the pin 20 can circulate in said housing 22 allowing guidance of the locking spout 8 when it is moved under the effect. from an impact with the nose 10a of the locking member 10.
  • the spring 14 ensures the elastic part of the damping during an impact between the locking member 10 and the locking spout 8, the friction of the pin 20 in the housing 22 constituting its dissipative part.
  • the stop wheel 6b comprises a body 6c integral with the pinion 6a and its shaft 16, as well as a circular board 24, coaxial and mounted to rotate freely with respect to said body 6c around the shaft 16.
  • the board 24 is integral with the blocking spout 8 arranged at its outer periphery in order to be able to cooperate with the nose 10a of the blocking member 10.
  • the blocking spout 8 is preferably integral with the board 24 but it can also be attached.
  • the resilient member 14 is arranged to join in rotation the body 6c and the board 24 when the locking member 10 is not in its first stop position, the gear then being free to rotate and to drive the movable stop 6, by driving together the body 6c and the board 24, and to allow a relative movement between the body 6c and the board 24 during an impact between the locking member 10 and the locking spout 8 when the blocking member 10 is passed through its first stop position, so the shock absorption comprises an elastic part and a part dissipating energy by friction.
  • the board 24 and the body 6c are configured to have respectively surfaces in contact with each other, arranged to generate friction during the relative movement between the body 6c and the board 24 following the impact between the locking member. 10 and the locking spout 8.
  • the board 24 and the body 6c are arranged to have a voluntarily large pivot diameter in order to increase friction and dissipate a maximum of energy during an impact. between the locking member 10 and the locking spout 8.
  • the elastic member 14 is in the form of a spring disposed in a circular manner on the body 6c of the stop wheel 6b, coaxially with the shaft 16.
  • the elastic member 14 which comprises a first end 14a which is fixed integrally to the body 6c of the stop wheel 6b, and a second end 14b which is fixed integrally to the board 24 by means of a fastening element 26, such as a nail mounted through the second end of the elastic member 14 and fixed in an orifice 27 provided on the board 24.
  • the fixing element 26 is positioned in the board 24 in the immediate vicinity and radially to the locking spout 8.
  • the body 6c comprises an oblong slot 28 in which said fixing element 26 can circulate during a relative movement between the body 6c and the board 24 during an impact between the locking member 10 and the spout. blocking 8.
  • the oblong slot 28 is circular in shape concentric with the body 6c and the board 24.
  • the elastic member is pre-armed and the length of the slot 28 is chosen so that its front end 28a (cf. . figure 12 ) constitutes a stop for the fixing element 26 in order to guarantee the correct positioning of the board 24 and therefore of the locking nose 8 when the body 6c and the board 24 are integrally linked in rotation.
  • the length of the slot 28 is also chosen so that its rear end 28b (cf. figure 12 ) constitutes a stop for the fastener 26 to ensure that the spring does not plasticize when its maximum stroke is reached.
  • the body 6c of the stop wheel 6b has on its peripheral periphery at least one radial elastic arm 30 (for example three as shown) arranged to be in contact with the board 24 so as to generate additional friction.
  • Each resilient arm 30 ends in a contact element 30a arranged to be in contact with a corresponding surface provided on the board 24.
  • the torque resulting from the action of the elastic member 14 must be greater than the torque resulting from the friction of the elastic arms 30 on the board 24 in order to guarantee the correct positioning of said board 24 and therefore of the locking nose 8 when the body 6c and the board 24 are integrally linked in rotation.
  • the elastic member 14, when it is attached, as in the variants of figures 6 to 12 is for example made of steel, NiP, or silicon, the body 6c of the stop wheel being for example made of CuBe and the plate 24 of steel.
  • the operation of the watch mechanism is as follows: with reference to the figure 11 , when the locking device 4 is in its second position, the locking member 10 and its nose 10a are moved away from the stop mobile 6 so that the gear train 3 is released. Under the action of the motor member 2, the various mobile units 3a to 3e of the gear train 3 are driven in rotation, the mobile device 3e rotating the pinion 6a of the stop piece 6 in the clockwise direction.
  • the rotation of the pinion 6a causes the integral rotation of all the elements of the stop wheel 6b in the clockwise direction, the body 6c being integral with the pinion 6a and carrying the elastic member 14, and the board, in the variants where it is present, being connected in rotation to the body 6c by the elastic member 14.
  • the damping of said shock comprises an elastic part, provided by the bending of the spring, thus a portion dissipating energy by friction of the board 24 on the body 6c, said board 24 having become detached from the body 6c and moving relatively to said body 6c, the second end 14b of the elastic member being able to move in braid 28.
  • the damping of the shock between the locking nose 8 and the nose 10a of the locking member 10 is only of the elastic type.
  • the locking device of the invention by using an elastic member integrated (monolithic or on-board) to the stop moving body and not to the locking member, allows said locking member to remain rigid, which guarantees the reliability of the locking. rotating cog.
  • the locking device of the invention makes it possible to reduce the maximum force between the locking nose of the stop piece and the nose of the locking member and to increase the duration of the impact.
  • the energy of the impact is no longer dissipated mainly between the blocking member and the blocking spout, which resulted in rapid and significant wear of said blocking spout, but the majority of the energy is dissipated by friction between the board and the body of the stop wheel, with a first elastic damping part at the moment of impact.
  • the present invention makes it possible to eliminate all the problems associated with violent impacts, such as premature wear of the locking nose, but also deformation and the rotational withstand torque.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Lock And Its Accessories (AREA)
  • Electromechanical Clocks (AREA)

Abstract

La présente invention concerne un mécanisme horloger pourvu d'un rouage et d'un dispositif de blocage dudit rouage, ledit dispositif de blocage comprenant un mobile d'arrêt (6) agencé pour pouvoir être entrainé en rotation par le rouage et formé d'un pignon (6a) et d'une roue d'arrêt (6b), ladite roue d'arrêt (6b) étant agencée pour porter un bec de blocage (8), et un organe de blocage mobile entre une première position d'arrêt dans laquelle l'organe de blocage coopère avec le bec de blocage pour arrêter le mobile d'arrêt (6) afin d'immobiliser le rouage et une seconde position dans laquelle l'organe de blocage ne coopère pas avec le mobile d'arrêt (6). Le dispositif de blocage comprend en outre un organe élastique (14) porté par la roue d'arrêt (6b) du mobile d'arrêt (6) et agencé pour relier le bec de blocage (8) à ladite roue d'arrêt (6b) et pour permettre, lors d'un choc entre l'organe de blocage et le bec de blocage (8), un amortissement dudit choc comprenant au moins une partie élastique, et de préférence une partie élastique ainsi qu'une partie dissipative d'énergie.The present invention relates to a horological mechanism provided with a cog and a device for blocking said cog, said blocking device comprising a stop mobile (6) arranged to be able to be driven in rotation by the cog and formed of a pinion (6a) and a stop wheel (6b), said stop wheel (6b) being arranged to carry a blocking nose (8), and a blocking member movable between a first stop position in in which the blocking member cooperates with the blocking spout to stop the stop wheel (6) in order to immobilize the gear train and a second position in which the blocking member does not cooperate with the stop wheel (6) ). The locking device further comprises an elastic member (14) carried by the stop wheel (6b) of the stop wheel (6) and arranged to connect the blocking spout (8) to said stop wheel (6b). ) and to allow, during an impact between the locking member and the locking nose (8), a damping of said shock comprising at least one elastic part, and preferably an elastic part as well as a dissipative part of energy.

Description

La présente invention concerne un mécanisme horloger pourvu d'un rouage et d'un dispositif de blocage dudit rouage, ledit dispositif de blocage comprenant un mobile d'arrêt agencé pour pouvoir être entrainé en rotation par le rouage et formé d'une roue d'arrêt et d'un pignon, ladite roue d'arrêt étant agencée pour porter un bec de blocage, et un organe de blocage mobile entre une première position d'arrêt dans laquelle l'organe de blocage coopère avec le bec de blocage pour arrêter le mobile d'arrêt afin d'immobiliser le rouage et une seconde position dans laquelle l'organe de blocage ne coopère pas avec le mobile d'arrêt.The present invention relates to a horological mechanism provided with a cog and a device for blocking said cog, said blocking device comprising a stop mobile arranged to be able to be driven in rotation by the cog and formed of a wheel. stopper and a pinion, said stopper wheel being arranged to carry a locking nose, and a locking member movable between a first stop position in which the locking member cooperates with the locking nose to stop the stop mobile in order to immobilize the gear train and a second position in which the locking member does not cooperate with the stop mobile.

Un tel mécanisme est utilisé par exemple dans un mouvement horloger comprenant un remontoir d'égalité ou un dispositif dit à « force constante », c'est-à-dire un mouvement horloger comprenant entre son organe moteur et son échappement un ressort intermédiaire qui est armé périodiquement par l'organe moteur et qui délivre son énergie à l'échappement.Such a mechanism is used for example in a watch movement comprising an equalizer winder or a so-called “constant force” device, that is to say a watch movement comprising between its driving member and its escapement an intermediate spring which is periodically armed by the engine and which delivers its energy to the exhaust.

Un tel mouvement horloger est décrit dans le brevet EP 3 401 739 de la demanderesse. Le mouvement horloger est agencé pour fonctionner selon un cycle comprenant une première phase pendant laquelle l'organe de blocage bloque le mobile d'arrêt, placé au bout du rouage, pour immobiliser ledit rouage, permettant au ressort intermédiaire de se détendre, et une seconde phase déclenchée par la libération du rouage par l'organe de blocage pendant laquelle le ressort intermédiaire est réarmé et l'organe de blocage est ramené dans une position dans laquelle il pourra de nouveau immobiliser le rouage. A chaque cycle, lorsque l'organe de blocage s'est escamoté pour libérer le rouage, le mobile d'arrêt effectue une rotation de 360° avant d'être à nouveau arrêté par l'organe de blocage. Lorsque l'organe de blocage et le mobile d'arrêt entrent en contact l'un de l'autre, il se produit un choc qui est d'autant plus fort que le mobile d'arrêt se déplace avec une certaine vitesse, de sorte que les forces en jeu sont très importantes pour une durée du choc très courte (inférieure à 1 ms). Ce choc brusque et très violent, répété à chaque cycle, va entrainer une usure importante, notamment au niveau du bec de blocage du mobile d'arrêt. Cette usure se traduit par la production de copeaux de matière qui salissent le mouvement. A terme, une usure importante risque de faire perdre au mobile d'arrêt sa fonction d'arrêtage.Such a watch movement is described in the patent EP 3,401,739 of the plaintiff. The watch movement is arranged to operate according to a cycle comprising a first phase during which the blocking member blocks the stop piece, placed at the end of the gear, to immobilize said gear, allowing the intermediate spring to relax, and a second phase triggered by the release of the gear train by the locking member during which the intermediate spring is reset and the locking member is returned to a position in which it can again immobilize the gear train. At each cycle, when the blocking member is retracted to release the gear train, the stopping mobile performs a 360 ° rotation before being stopped again by the blocking member. When the blocking member and the stop piece come into contact with each other, a shock occurs which is all the stronger as the stop piece moves with a certain speed, so that the forces involved are very important for a very short duration of the shock (less than 1 ms). This sudden and very violent shock, repeated at each cycle, will cause significant wear, in particular at the level of the locking spout of the stop piece. This wear results in the production of material chips which dirty the movement. Eventually, significant wear runs the risk of causing the stopping mobile to lose its stopping function.

La présente invention vise à remédier à ces inconvénients en proposant un dispositif de blocage d'un mobile en rotation permettant d'arrêter ledit mobile de manière sûre sans avoir de choc violent entre le dispositif de blocage et ledit mobile.The present invention aims to remedy these drawbacks by proposing a device for blocking a rotating mobile device allowing said mobile to be stopped in a safe manner without having a violent impact between the locking device and said mobile.

A cet effet, la présente invention concerne un mécanisme horloger pourvu d'un rouage et d'un dispositif de blocage dudit rouage, ledit dispositif de blocage comprenant un mobile d'arrêt agencé pour pouvoir être entrainé en rotation par le rouage et formé d'une roue d'arrêt et d'un pignon, ladite roue d'arrêt étant agencée pour porter un bec de blocage, et un organe de blocage mobile entre une première position d'arrêt dans laquelle l'organe de blocage coopère avec le bec de blocage pour arrêter le mobile d'arrêt afin d'immobiliser le rouage et une seconde position dans laquelle l'organe de blocage ne coopère pas avec le mobile d'arrêt.To this end, the present invention relates to a watch mechanism provided with a cog and a device for blocking said cog, said blocking device comprising a stop mobile arranged to be able to be rotated by the cog and formed of a stop wheel and a pinion, said stop wheel being arranged to carry a locking spout, and a locking member movable between a first stop position in which the locking member cooperates with the spout of blocking to stop the stop mobile in order to immobilize the gear train and a second position in which the blocking member does not cooperate with the stop mobile.

Selon l'invention, le dispositif de blocage comprend un organe élastique porté par la roue d'arrêt du mobile d'arrêt et agencé pour relier le bec de blocage à ladite roue d'arrêt et pour permettre, lors d'un choc entre l'organe de blocage et le bec de blocage, un amortissement dudit choc comprenant au moins une partie élastique.According to the invention, the locking device comprises an elastic member carried by the stop wheel of the stop mobile and arranged to connect the blocking spout to said stop wheel and to allow, upon impact between the 'locking member and the locking spout, a damping of said shock comprising at least one elastic part.

D'une manière particulièrement avantageuse, l'organe élastique est agencé pour permettre, lors d'un choc entre l'organe de blocage et le bec de blocage, un amortissement dudit choc comprenant une partie élastique mais également une partie dissipative d'énergie, de préférence par frottement.In a particularly advantageous manner, the elastic member is arranged to allow, during an impact between the locking member and the locking nose, a damping of said shock comprising an elastic part but also an energy dissipative part, preferably by friction.

Ainsi, le dispositif de blocage selon l'invention permet de réduire la force maximale d'un choc entre le dispositif de blocage et le mobile en rotation au moment du blocage du mobile en rotation et d'augmenter la durée de ce choc, de sorte que les problèmes liés à un choc violent entre le dispositif de blocage et ledit mobile (à savoir notamment l'usure, mais aussi la déformation et le couple de tenue en rotation) sont supprimés.Thus, the locking device according to the invention makes it possible to reduce the maximum force of an impact between the locking device and the rotating mobile when the rotating mobile is locked and to increase the duration of this shock, so that the problems associated with a violent impact between the locking device and said moving body (namely in particular wear, but also deformation and the torque of resistance to rotation) are eliminated.

La présente invention concerne également une pièce d'horlogerie, telle que montre ou pendule, comprenant un mécanisme horloger tel que défini ci-dessus.The present invention also relates to a timepiece, such as a watch or a pendulum, comprising a watch mechanism as defined above.

D'autres caractéristiques et avantages de la présente invention apparaîtront à la lecture de la description détaillée suivante de plusieurs modes de réalisation de l'invention, donnés à titre d'exemples non limitatifs, et faite en référence aux dessins annexés dans lesquels :

  • la figure 1 est une vue de dessus d'un mécanisme horloger selon l'invention, le dispositif de blocage étant dans sa première position d'arrêt;
  • la figure 2 est une vue de dessus du mécanisme horloger selon l'invention, le dispositif de blocage étant dans sa seconde position, laissant le rouage libre de tourner;
  • la figure 3 est une vue isométrique d'une première variante d'un premier mode de réalisation d'un mobile d'arrêt selon l'invention ;
  • la figure 4 est une vue de dessus du mobile d'arrêt de la figure 3 ;
  • les figures 5 et 6 sont des vue de dessus schématisées d'autres variantes du premier mode de réalisation du dispositif de blocage selon l'invention ;
  • la figure 7 est une vue de dessus schématisée d'un mobile d'arrêt selon une première variante d'un deuxième mode de réalisation du dispositif de blocage selon l'invention ;
  • la figure 8 est une vue isométrique d'un mobile d'arrêt selon une deuxième variante du deuxième mode de réalisation du dispositif de blocage selon l'invention ;
  • la figure 9 est une vue de dessous du mobile d'arrêt de la figure 8;
  • la figure 10 est une vue isométrique du mobile d'arrêt selon une troisième variante du deuxième mode de réalisation du dispositif de blocage selon l'invention ;
  • la figure 11 est une vue isométrique de la deuxième variante du deuxième mode de réalisation du dispositif de blocage selon l'invention, le dispositif de blocage étant dans sa seconde position, dans laquelle l'organe élastique est représenté partiellement ; et
  • la figure 12 est une vue isométrique de la deuxième variante du deuxième mode de réalisation du dispositif de blocage selon l'invention, le dispositif de blocage étant dans sa première position d'arrêt, l'organe élastique étant partiellement représenté.
Other characteristics and advantages of the present invention will become apparent on reading the following detailed description of several embodiments of the invention, given by way of non-limiting examples, and made with reference to the appended drawings in which:
  • the figure 1 is a top view of a watch mechanism according to the invention, the locking device being in its first stop position;
  • the figure 2 is a top view of the horological mechanism according to the invention, the locking device being in its second position, leaving the gear train free to turn;
  • the figure 3 is an isometric view of a first variant of a first embodiment of a stop mobile according to the invention;
  • the figure 4 is a top view of the mobile for stopping the figure 3 ;
  • the figures 5 and 6 are schematic top views of other variants of the first embodiment of the locking device according to the invention;
  • the figure 7 is a diagrammatic top view of a stop wheel according to a first variant of a second embodiment of the locking device according to the invention;
  • the figure 8 is an isometric view of a stop mobile according to a second variant of the second embodiment of the locking device according to the invention;
  • the figure 9 is a bottom view of the mobile for stopping the figure 8 ;
  • the figure 10 is an isometric view of the stop mobile according to a third variant of the second embodiment of the locking device according to the invention;
  • the figure 11 is an isometric view of the second variant of the second embodiment of the locking device according to the invention, the device locking being in its second position, in which the elastic member is partially shown; and
  • the figure 12 is an isometric view of the second variant of the second embodiment of the locking device according to the invention, the locking device being in its first stop position, the elastic member being partially shown.

En référence aux figures 1 et 2, le mécanisme horloger 1 selon la présente invention comprend un organe moteur 2, typiquement constitué par un barillet, un rouage 3 entrainé en rotation par l'organe moteur 2 et un dispositif de blocage 4 du rouage 3.With reference to figures 1 and 2 , the watch mechanism 1 according to the present invention comprises a driving member 2, typically constituted by a barrel, a gear 3 rotated by the driving member 2 and a locking device 4 of the gear train 3.

Le rouage 3 comprend, dans l'exemple illustré, un mobile de centre 3a engrenant avec l'organe moteur 2, un mobile de moyenne 3b engrenant avec le mobile de centre 3a, un mobile de seconde 3c engrenant avec le mobile de moyenne 3b, un premier mobile intermédiaire 3d engrenant avec le mobile de seconde 3c, un second mobile intermédiaire 3e engrenant avec le premier mobile intermédiaire 3d. Chacun des mobiles 3a à 3e est formé d'une roue dentée et d'un pignon coaxiaux et solidaires.The gear train 3 comprises, in the example illustrated, a center mobile 3a meshing with the driving member 2, a medium mobile 3b meshing with the center mobile 3a, a second mobile 3c meshing with the average mobile 3b, a first intermediate mobile 3d meshing with the second mobile 3c, a second intermediate mobile 3rd meshing with the first intermediate mobile 3d. Each of the mobile units 3a to 3e is formed of a toothed wheel and a coaxial and integral pinion.

Le dispositif de blocage 4 comprend un mobile d'arrêt 6 agencé pour être entrainé en rotation par le rouage 3, lorsque le rouage 3 est lui-même entrainé par l'organe moteur 2. Plus spécifiquement, l'entrainement du mobile d'arrêt 6 se fait par engrènement avec le second mobile intermédiaire 3e dudit rouage 3. Le mobile d'arrêt 6 est formé d'un pignon 6a, agencé pour engrener avec la roue dentée du second mobile intermédiaire 3e, et d'une roue d'arrêt (non dentée) 6b coaxiale au pignon 6a, et comprenant notamment un corps 6c coaxial et solidaire audit pignon 6a. La roue d'arrêt 6b est agencée pour porter un bec de blocage 8, représenté sur les figures 1 et 2 de manière simplifiée et qui sera décrit plus spécifiquement ci-après.The locking device 4 comprises a stop wheel 6 arranged to be driven in rotation by the gear train 3, when the gear train 3 is itself driven by the motor member 2. More specifically, the drive of the stop wheel set. 6 is made by meshing with the second intermediate mobile 3rd of said gear 3. The stop mobile 6 is formed of a pinion 6a, arranged to mesh with the toothed wheel of the second intermediate mobile 3rd, and of a stop wheel (non-toothed) 6b coaxial with pinion 6a, and comprising in particular a body 6c coaxial and integral with said pinion 6a. The stop wheel 6b is arranged to carry a blocking spout 8, shown in figures 1 and 2 in a simplified manner and which will be described more specifically below.

Le dispositif de blocage 4 comprend également un organe de blocage 10 mobile entre une première position d'arrêt dans laquelle l'organe de blocage 10 coopère avec le bec de blocage 8 du mobile d'arrêt 6 pour arrêter ledit mobile d'arrêt 6 afin d'immobiliser le rouage 3 et une seconde position dans laquelle l'organe de blocage 10 s'est éloigné et ne peut donc plus coopérer avec le mobile d'arrêt 6, permettant la libération dudit mobile d'arrêt 6 de sorte que le rouage 3 est libre de tourner sous l'action de l'organe moteur 2. L'organe de blocage 10 se présente d'une manière avantageuse sous la forme d'un levier portant un bec ou nez 10a agencé pour coopérer avec le bec de blocage 8 du mobile d'arrêt 6.The locking device 4 also comprises a locking member 10 movable between a first stop position in which the locking member 10 cooperates with the locking beak 8 of the stop mobile 6 to stop said stop mobile 6 in order to immobilize the gear train 3 and a second position in which the locking member 10 has moved away and can therefore no longer cooperate with the stop mobile 6, allowing the release of said stop mobile 6 so that the gear train 3 is free to rotate under the action of the motor member 2. The locking member 10 is presented in a manner advantageous in the form of a lever carrying a beak or nose 10a arranged to cooperate with the locking beak 8 of the stop piece 6.

Le mécanisme 1 comprend également un organe de commande 12, tel qu'une bascule, agencé pour commander le positionnement de l'organe de blocage 10 dans sa première position d'arrêt comme représenté sur la figure 1 ou dans sa seconde position, lorsque l'organe de blocage 10 est dégagé du mobile d'arrêt 6, comme représenté sur la figure 2.The mechanism 1 also comprises a control member 12, such as a rocker, arranged to control the positioning of the locking member 10 in its first stop position as shown in FIG. figure 1 or in its second position, when the blocking member 10 is released from the stop piece 6, as shown in figure 2 .

Le mécanisme 1 peut être agencé pour fonctionner avec un dispositif à force constante ou un remontoir d'égalité (non représenté). Un tel mécanisme 1 est décrit dans la demande EP 3 401 739 de la demanderesse à laquelle on pourra se rapporter pour la description détaillée des éléments relatifs au dispositif à force constante et à son fonctionnement. Le mécanisme horloger selon l'invention peut être utilisé dans une montre ou une pendule, en particulier une pendule de table. Le mécanisme 1 peut également être utilisé dans tout autre mécanisme horloger comprenant un système d'arrêtage, et plus particulièrement un système d'arrêtage instantané générant des chocs violents entre les pièces lors du blocage du mécanisme. Ainsi, le mécanisme pourrait être également utilisé par exemple dans un mécanisme de sonnerie, ou dans tout mécanisme horloger comprenant un rouage moteur apte à fonctionner en mode ON/OFF, tel qu'un calendrier, un quantième, un quantième perpétuel.The mechanism 1 can be arranged to operate with a constant force device or an equality winder (not shown). Such a mechanism 1 is described in the application EP 3,401,739 by the Applicant, to which reference may be made for the detailed description of the elements relating to the constant force device and to its operation. The horological mechanism according to the invention can be used in a watch or a clock, in particular a table clock. The mechanism 1 can also be used in any other watch mechanism comprising a stopping system, and more particularly an instant stopping system generating violent shocks between the parts when the mechanism is blocked. Thus, the mechanism could also be used, for example, in a striking mechanism, or in any horological mechanism comprising a motor train capable of operating in ON / OFF mode, such as a calendar, a date, a perpetual calendar.

Conformément à l'invention, le dispositif de blocage 4 comprend un organe élastique 14 porté par la roue d'arrêt 6b du mobile d'arrêt 6 et agencé pour relier mécaniquement le bec de blocage 8 à ladite roue d'arrêt 6b et pour permettre, lors d'un choc entre l'organe de blocage 10 et le bec de blocage 8, un amortissement dudit choc comprenant au moins une partie élastique assurée par la compression de l'organe élastique 14.According to the invention, the locking device 4 comprises an elastic member 14 carried by the stop wheel 6b of the stop mobile 6 and arranged to mechanically connect the blocking spout 8 to said stop wheel 6b and to allow , during an impact between the locking member 10 and the locking spout 8, a damping of said shock comprising at least one elastic part provided by the compression of the elastic member 14.

Plus particulièrement, l'organe élastique 14 est porté par le corps 6c de la roue 6b du mobile d'arrêt 6 et présente à cet effet une première extrémité qui est solidaire dudit corps 6c et une seconde extrémité qui est solidaire, directement ou indirectement, du bec de blocage 8, comme cela sera décrit plus en détails ci-après.More particularly, the elastic member 14 is carried by the body 6c of the wheel 6b of the stop piece 6 and has for this purpose a first end which is integral with said body 6c and a second end which is integral, directly or indirectly, of the locking spout 8, as will be described in more detail below.

Selon un premier mode de réalisation de l'invention, l'agencement du dispositif de blocage 4 selon l'invention permet un amortissement uniquement élastique des chocs entre l'organe de blocage 10 et le bec de blocage 8.According to a first embodiment of the invention, the arrangement of the locking device 4 according to the invention allows uniquely elastic damping of the shocks between the locking member 10 and the locking spout 8.

Selon ce premier mode de réalisation, en référence aux figures 3 à 6, la roue d'arrêt 6b est formée uniquement par le corps 6c solidaire du pignon 6a, lui-même solidaire de son arbre 16 monté pivotant sur le bâti du mécanisme. L'organe élastique 14 comprend une première extrémité 14a qui est solidaire dudit corps 6c et une seconde extrémité 14b, libre, solidaire du bec de blocage 8.According to this first embodiment, with reference to figures 3 to 6 , the stop wheel 6b is formed only by the body 6c secured to the pinion 6a, itself secured to its shaft 16 pivotally mounted on the frame of the mechanism. The elastic member 14 comprises a first end 14a which is integral with said body 6c and a second end 14b, free, integral with the locking spout 8.

Selon une première variante de ce premier mode de réalisation, et en référence plus spécifiquement aux figures 3 à 5, l'organe élastique 14 et le bec de blocage 8 sont formés de manière monobloc avec le corps 6c.According to a first variant of this first embodiment, and with more specific reference to figures 3 to 5 , the elastic member 14 and the locking spout 8 are formed integrally with the body 6c.

A cet effet, le corps 6c de la roue d'arrêt 6b comprend au moins une découpe 18 agencée pour former, dans le corps 6c restant, l'organe élastique 14 ainsi que le bec de blocage 8, venus de matière, la seconde extrémité 14b de l'organe élastique 14 étant agencée pour former le bec de blocage 8.To this end, the body 6c of the stop wheel 6b comprises at least one cutout 18 arranged to form, in the remaining body 6c, the elastic member 14 as well as the locking spout 8, integrally, the second end 14b of the elastic member 14 being arranged to form the locking spout 8.

Comme le montrent les figures 3 et 4, le corps 6c peut comprendre une seule découpe 18 réalisée à proximité du bord périphérique circulaire du corps 6c de manière à former un organe élastique 14 et un bec de blocage 8 extérieurs, à la périphérie dudit corps 6c. Le corps 6c restant présente alors une forme ovoïde, coaxiale au pignon 6a.As the figures 3 and 4 , the body 6c may comprise a single cutout 18 made near the circular peripheral edge of the body 6c so as to form an elastic member 14 and an outer locking spout 8, at the periphery of said body 6c. The remaining body 6c then has an ovoid shape, coaxial with the pinion 6a.

Comme le montre la figure 5 d'une manière schématisée, le corps 6c de forme circulaire peut comprendre deux découpes 18 réalisées dans la surface intérieure du corps 6c, sensiblement concentriques, de manière à former un organe élastique 14 essentiellement intérieur, seule sa seconde extrémité 14b dépassant du corps 6c pour former le bec de blocage 8 agencé pour pouvoir coopérer avec le nez 10a de l'organe de blocage 10.As shown in the figure 5 schematically, the body 6c of circular shape may comprise two cutouts 18 made in the inner surface of the body 6c, substantially concentric, so as to form an organ elastic 14 essentially internal, only its second end 14b protruding from the body 6c to form the locking spout 8 arranged to be able to cooperate with the nose 10a of the locking member 10.

La ou les découpe(s) 18 est (sont) de préférence de forme sensiblement circulaire ou à tout le moins arrondie, afin de dégager une langue de matière fine, sensiblement incurvée, et de longueur suffisante pour présenter les fonctions élastiques recherchées et constituer l'organe élastique 14. La seconde extrémité de l'organe élastique 14b est élargie pour former le bec de blocage 8.The cutout (s) 18 is (are) preferably of substantially circular or at least rounded shape, in order to release a tongue of fine material, substantially curved, and of sufficient length to present the desired elastic functions and to constitute the 'elastic member 14. The second end of the elastic member 14b is widened to form the locking spout 8.

De préférence, le corps 6c formant la roue d'arrêt 6b est réalisé par exemple en alliage métallique, tel que acier, CuBe, Maillechort, laiton, à base de Ni, NiP, Nivaflex®, Phynox®, etc., en verre métallique ou en silicium, afin que l'organe élastique puisse présenter les propriétés élastiques requises.Preferably, the body 6c forming the stop wheel 6b is made for example of a metal alloy, such as steel, CuBe, Maillechort, brass, based on Ni, NiP, Nivaflex®, Phynox®, etc., of metallic glass. or silicon, so that the elastic member can have the required elastic properties.

Selon une deuxième variante de ce premier mode de réalisation, et en référence plus spécifiquement à la figure 6, l'organe élastique 14 et le bec de blocage 8 sont rapportés sur le corps 6c.According to a second variant of this first embodiment, and with more specific reference to the figure 6 , the elastic member 14 and the locking spout 8 are attached to the body 6c.

A cet effet, l'organe élastique 14 est sous la forme d'un ressort disposé sur le corps 6c de la roue d'arrêt 6b et dont la première extrémité 14a est fixée solidairement sur ledit corps 6c et la seconde extrémité 14b est libre et est solidaire du bec de blocage 8.For this purpose, the elastic member 14 is in the form of a spring arranged on the body 6c of the stop wheel 6b and the first end 14a of which is fixedly fixed to said body 6c and the second end 14b is free and is integral with the locking spout 8.

La seconde extrémité libre 14b de l'organe élastique 14 porte directement le bec de blocage 8 qui peut être monobloc avec ladite seconde extrémité 14b ou rapporté, ledit bec de blocage 8 étant agencé pour coopérer avec le nez 10a de l'organe de blocage 10.The second free end 14b of the resilient member 14 directly carries the locking spout 8 which can be integral with said second end 14b or attached, said locking spout 8 being arranged to cooperate with the nose 10a of the locking member 10. .

Selon un second mode de réalisation de l'invention, l'agencement du dispositif de blocage 4 selon l'invention et de son organe élastique 14 permet, lors d'un choc entre l'organe de blocage 10 et le bec de blocage 8, d'avoir un amortissement dudit choc comprenant non seulement une partie élastique comme décrit ci-dessus mais également une partie dissipative d'énergie, avantageusement obtenue par frottement.According to a second embodiment of the invention, the arrangement of the locking device 4 according to the invention and of its elastic member 14 allows, upon impact between the locking member 10 and the locking spout 8, to have a damping of said shock comprising not only an elastic part as described above but also an energy dissipative part, advantageously obtained by friction.

Selon une première variante de ce second mode de réalisation, et en référence plus spécifiquement à la figure 7, la roue d'arrêt 6b est formée uniquement par le corps 6c solidaire du pignon 6a. L'organe élastique 14 est sous la forme d'un ressort disposé sur le corps 6c de la roue d'arrêt 6b et dont la première extrémité 14a est fixée solidairement sur ledit corps 6c et la seconde extrémité 14b est libre et est solidaire du bec de blocage 8.According to a first variant of this second embodiment, and with more specific reference to the figure 7 , the stop wheel 6b is formed only by the body 6c integral with the pinion 6a. The elastic member 14 is in the form of a spring arranged on the body 6c of the stop wheel 6b and the first end 14a of which is fixedly fixed on said body 6c and the second end 14b is free and is fixed to the spout lock 8.

Le corps 6c porte une goupille 20 et la seconde extrémité libre 14b de l'organe élastique 14 comprend un logement oblong 22 intermédiaire portant lui-même le bec de blocage 8 qui peut être monobloc avec ledit logement 20 ou rapporté. Le logement 22 peut être formé par exemple par une boucle formée à la seconde extrémité 14b de l'organe élastique 14. La goupille 20 peut circuler dans ledit logement 22 permettant un guidage du bec de blocage 8 lorsqu'il est déplacé sous l'effet d'un choc avec le nez 10a de l'organe de blocage 10. Le ressort 14 permet d'assurer la partie élastique de l'amortissement lors d'un choc entre l'organe de blocage 10 et le bec de blocage 8, le frottement de la goupille 20 dans le logement 22 constituant sa partie dissipative.The body 6c carries a pin 20 and the second free end 14b of the elastic member 14 comprises an intermediate elongated housing 22 itself carrying the locking spout 8 which can be integral with said housing 20 or attached. The housing 22 can be formed for example by a loop formed at the second end 14b of the elastic member 14. The pin 20 can circulate in said housing 22 allowing guidance of the locking spout 8 when it is moved under the effect. from an impact with the nose 10a of the locking member 10. The spring 14 ensures the elastic part of the damping during an impact between the locking member 10 and the locking spout 8, the friction of the pin 20 in the housing 22 constituting its dissipative part.

Selon une deuxième variante du second mode de réalisation, et en référence aux figures 8 à 12, la roue d'arrêt 6b comprend un corps 6c solidaire du pignon 6a et de son arbre 16, ainsi qu'une planche 24 circulaire, coaxiale et montée libre en rotation par rapport audit corps 6c autour de l'arbre 16. La planche 24 est solidaire du bec de blocage 8 agencé à sa périphérie extérieure afin de pouvoir coopérer avec le nez 10a de l'organe de blocage 10. Le bec de blocage 8 est de préférence monobloc avec la planche 24 mais il peut également être rapporté.According to a second variant of the second embodiment, and with reference to figures 8 to 12 , the stop wheel 6b comprises a body 6c integral with the pinion 6a and its shaft 16, as well as a circular board 24, coaxial and mounted to rotate freely with respect to said body 6c around the shaft 16. The board 24 is integral with the blocking spout 8 arranged at its outer periphery in order to be able to cooperate with the nose 10a of the blocking member 10. The blocking spout 8 is preferably integral with the board 24 but it can also be attached.

L'organe élastique 14 est agencé pour lier solidairement en rotation le corps 6c et la planche 24 lorsque l'organe de blocage 10 n'est pas dans sa première position d'arrêt, le rouage étant alors libre de tourner et d'entrainer le mobile d'arrêt 6, en entrainant ensemble le corps 6c et la planche 24, et pour permettre un déplacement relatif entre le corps 6c et la planche 24 lors d'un choc entre l'organe de blocage 10 et le bec de blocage 8 lorsque l'organe de blocage 10 est passé dans sa première position d'arrêt, de sorte l'amortissement du choc comprend une partie élastique ainsi qu'une partie dissipative d'énergie par frottement. En effet, la planche 24 et le corps 6c sont configurés pour présenter respectivement des surfaces en contact les unes des autres, agencées pour générer des frottements lors du déplacement relatif entre le corps 6c et la planche 24 suite au choc entre l'organe de blocage 10 et le bec de blocage 8. D'une manière avantageuse, la planche 24 et le corps 6c sont agencés pour présenter un diamètre de pivotement volontairement important afin d'augmenter les frottements et de dissiper un maximum d'énergie lors d'un choc entre l'organe de blocage 10 et le bec de blocage 8.The resilient member 14 is arranged to join in rotation the body 6c and the board 24 when the locking member 10 is not in its first stop position, the gear then being free to rotate and to drive the movable stop 6, by driving together the body 6c and the board 24, and to allow a relative movement between the body 6c and the board 24 during an impact between the locking member 10 and the locking spout 8 when the blocking member 10 is passed through its first stop position, so the shock absorption comprises an elastic part and a part dissipating energy by friction. In fact, the board 24 and the body 6c are configured to have respectively surfaces in contact with each other, arranged to generate friction during the relative movement between the body 6c and the board 24 following the impact between the locking member. 10 and the locking spout 8. Advantageously, the board 24 and the body 6c are arranged to have a voluntarily large pivot diameter in order to increase friction and dissipate a maximum of energy during an impact. between the locking member 10 and the locking spout 8.

De préférence, comme le montrent les figures 8 et 9, l'organe élastique 14 est sous la forme d'un ressort disposé de manière circulaire sur le corps 6c de la roue d'arrêt 6b, coaxialement à l'arbre 16. L'organe élastique 14 qui comprend une première extrémité 14a qui est fixée solidairement au corps 6c de la roue d'arrêt 6b, et une seconde extrémité 14b qui est fixée solidairement à la planche 24 au moyen d'un élément de fixation 26, tel qu'un clou monté traversant dans la seconde extrémité de l'organe élastique 14 et fixé dans un orifice 27 prévu sur la planche 24. De préférence, l'élément de fixation 26 est positionné dans la planche 24 à proximité immédiate et radialement au bec de blocage 8.Preferably, as shown in figures 8 and 9 , the elastic member 14 is in the form of a spring disposed in a circular manner on the body 6c of the stop wheel 6b, coaxially with the shaft 16. The elastic member 14 which comprises a first end 14a which is fixed integrally to the body 6c of the stop wheel 6b, and a second end 14b which is fixed integrally to the board 24 by means of a fastening element 26, such as a nail mounted through the second end of the elastic member 14 and fixed in an orifice 27 provided on the board 24. Preferably, the fixing element 26 is positioned in the board 24 in the immediate vicinity and radially to the locking spout 8.

De plus, le corps 6c comprend une lumière oblongue 28 dans laquelle ledit élément de fixation 26 peut circuler lors d'un déplacement relatif entre le corps 6c et la planche 24 lors d'un choc entre l'organe de blocage 10 et le bec de blocage 8.In addition, the body 6c comprises an oblong slot 28 in which said fixing element 26 can circulate during a relative movement between the body 6c and the board 24 during an impact between the locking member 10 and the spout. blocking 8.

La lumière oblongue 28 est de forme circulaire concentrique au corps 6c et à la planche 24. D'une manière avantageuse, l'organe élastique est pré-armé et la longueur de la lumière 28 est choisie de sorte que son extrémité avant 28a (cf. figure 12) constitue une butée pour l'élément de fixation 26 afin de garantir le positionnement correct de la planche 24 et donc du bec de blocage 8 lorsque le corps 6c et la planche 24 sont liés solidairement en rotation. La longueur de la lumière 28 est également choisie de sorte que son extrémité arrière 28b (cf. figure 12) constitue une butée pour l'élément de fixation 26 afin de garantir que le ressort ne plastifie pas lorsque sa course maximale est atteinte.The oblong slot 28 is circular in shape concentric with the body 6c and the board 24. Advantageously, the elastic member is pre-armed and the length of the slot 28 is chosen so that its front end 28a (cf. . figure 12 ) constitutes a stop for the fixing element 26 in order to guarantee the correct positioning of the board 24 and therefore of the locking nose 8 when the body 6c and the board 24 are integrally linked in rotation. The length of the slot 28 is also chosen so that its rear end 28b (cf. figure 12 ) constitutes a stop for the fastener 26 to ensure that the spring does not plasticize when its maximum stroke is reached.

Selon une troisième variante du deuxième mode de réalisation de l'invention, et en référence à la figure 10, le corps 6c de la roue d'arrêt 6b présente sur son pourtour périphérique au moins un bras élastique 30 radial (par exemple trois comme représenté) agencé pour être au contact de la planche 24 de manière à générer des frottements supplémentaires. Chaque bras élastique 30 se termine par un élément de contact 30a agencé pour être en contact avec une surface en correspondance prévue sur la planche 24. Cette friction supplémentaire entre le corps 6c et la planche 24 permet de dissiper encore plus d'énergie par frottement lors d'un choc entre l'organe de blocage 10 et le bec de blocage 8. Dans ce cas, le couple résultant de l'action de l'organe élastique 14 devra être supérieur au couple résultant de la friction des bras élastiques 30 sur la planche 24 afin de garantir le positionnement correct de ladite planche 24 et donc du bec de blocage 8 lorsque le corps 6c et la planche 24 sont liés solidairement en rotation.According to a third variant of the second embodiment of the invention, and with reference to figure 10 , the body 6c of the stop wheel 6b has on its peripheral periphery at least one radial elastic arm 30 (for example three as shown) arranged to be in contact with the board 24 so as to generate additional friction. Each resilient arm 30 ends in a contact element 30a arranged to be in contact with a corresponding surface provided on the board 24. This additional friction between the body 6c and the board 24 makes it possible to dissipate even more energy by friction during of an impact between the locking member 10 and the locking nose 8. In this case, the torque resulting from the action of the elastic member 14 must be greater than the torque resulting from the friction of the elastic arms 30 on the board 24 in order to guarantee the correct positioning of said board 24 and therefore of the locking nose 8 when the body 6c and the board 24 are integrally linked in rotation.

De préférence, l'organe élastique 14, lorsqu'il est rapporté, comme dans les variantes des figures 6 à 12, est par exemple en acier, NiP, ou silicium, le corps 6c de la roue d'arrêt étant par exemple en CuBe et la planche 24 en acier.Preferably, the elastic member 14, when it is attached, as in the variants of figures 6 to 12 , is for example made of steel, NiP, or silicon, the body 6c of the stop wheel being for example made of CuBe and the plate 24 of steel.

Le fonctionnement du mécanisme horloger est le suivant : en référence à la figure 11, lorsque le dispositif de blocage 4 est dans sa seconde position, l'organe de blocage 10 et son nez 10a sont éloignés du mobile d'arrêt 6 de sorte que le rouage 3 est libéré. Sous l'action de l'organe moteur 2, les différents mobiles 3a à 3e du rouage 3 sont entrainés en rotation, le mobile 3e entrainant en rotation le pignon 6a du mobile d'arrêt 6 dans le sens horaire. La rotation du pignon 6a entraine la rotation solidaire de tous les éléments de la roue d'arrêt 6b dans le sens horaire, le corps 6c étant solidaire du pignon 6a et portant l'organe élastique 14, et la planche, dans les variantes où elle est présente, étant liée solidairement en rotation au corps 6c par l'organe élastique 14.The operation of the watch mechanism is as follows: with reference to the figure 11 , when the locking device 4 is in its second position, the locking member 10 and its nose 10a are moved away from the stop mobile 6 so that the gear train 3 is released. Under the action of the motor member 2, the various mobile units 3a to 3e of the gear train 3 are driven in rotation, the mobile device 3e rotating the pinion 6a of the stop piece 6 in the clockwise direction. The rotation of the pinion 6a causes the integral rotation of all the elements of the stop wheel 6b in the clockwise direction, the body 6c being integral with the pinion 6a and carrying the elastic member 14, and the board, in the variants where it is present, being connected in rotation to the body 6c by the elastic member 14.

Lorsque l'organe de blocage 10, commandé par son organe de commande 12, est revenu dans sa première position d'arrêt, comme le montre la figure 12, soit après que le mobile d'arrêt 6 portant le bec de blocage 8 a parcouru un certain nombre de tours programmés en fonction du mécanisme horloger (qui peut être une fraction de tour si le mobile d'arrêt comporte plusieurs becs ou s'il y a plusieurs organes de blocage) ou soit après un temps donné ou après une action externe de l'utilisateur sur l'organe de commande 12, le mobile d'arrêt 6 revient buter contre le nez 10a de l'organe de blocage 10. Lors du choc entre le bec de blocage 8 et le nez 10a de l'organe de blocage 10, sous l'action de l'organe élastique 14, l'amortissement dudit choc comprend une partie élastique, assurée par la flexion du ressort, ainsi qu'une partie dissipative d'énergie par frottement de la planche 24 sur le corps 6c, ladite planche 24 s'étant désolidarisée du corps 6c et se déplaçant relativement audit corps 6c, la seconde extrémité 14b de l'organe élastique pouvant se déplacer dans la ganse 28. Dans les variantes des figures 3 à 6, l'amortissement du choc entre le bec de blocage 8 et le nez 10a de l'organe de blocage 10 est seulement de type élastique.When the locking member 10, controlled by its control member 12, has returned to its first stop position, as shown in figure 12 , either after the stop mobile 6 carrying the locking beak 8 has traveled a certain number of programmed revolutions according to the watch mechanism (which can be a fraction of a turn if the stop mobile has several slats or if it there are several locking members) or either after a given time or after an external action by the user on the control member 12, the stop piece 6 comes back to abut against the nose 10a of the locking member 10. During the impact between the locking beak 8 and the nose 10a of the locking member 10, under the action of the elastic member 14, the damping of said shock comprises an elastic part, provided by the bending of the spring, thus a portion dissipating energy by friction of the board 24 on the body 6c, said board 24 having become detached from the body 6c and moving relatively to said body 6c, the second end 14b of the elastic member being able to move in braid 28. In the variants of figures 3 to 6 , the damping of the shock between the locking nose 8 and the nose 10a of the locking member 10 is only of the elastic type.

Une fois le bec de blocage 8 du mobile d'arrêt 6 bloqué par l'organe de blocage 10, le mobile d'arrêt 6 est immobilisé, ce qui arrête le rouage 3 et l'organe moteur 2, jusqu'à ce que l'organe de blocage 10 passe de nouveau dans sa second position et libère le mobile d'arrêt 6.Once the locking beak 8 of the stop piece 6 blocked by the blocking member 10, the stop piece 6 is immobilized, which stops the gear train 3 and the motor member 2, until the the locking member 10 passes again to its second position and releases the stop piece 6.

Le dispositif de blocage de l'invention, en utilisant un organe élastique intégré (monolithique ou embarqué) au mobile d'arrêt et non à l'organe de blocage, permet audit organe de blocage de rester rigide, ce qui garantit la fiabilité du blocage en rotation du rouage.The locking device of the invention, by using an elastic member integrated (monolithic or on-board) to the stop moving body and not to the locking member, allows said locking member to remain rigid, which guarantees the reliability of the locking. rotating cog.

Le dispositif de blocage de l'invention permet de réduire la force maximale entre le bec de blocage du mobile d'arrêt et le nez de l'organe de blocage et d'augmenter la durée du choc. L'énergie du choc n'est plus dissipée principalement entre l'organe de blocage et le bec de blocage, ce qui entrainait une usure rapide et importante dudit bec de blocage, mais la majorité de l'énergie est dissipée par frottement entre la planche et le corps de la roue d'arrêt, avec une première partie d'amortissement élastique au moment du choc.The locking device of the invention makes it possible to reduce the maximum force between the locking nose of the stop piece and the nose of the locking member and to increase the duration of the impact. The energy of the impact is no longer dissipated mainly between the blocking member and the blocking spout, which resulted in rapid and significant wear of said blocking spout, but the majority of the energy is dissipated by friction between the board and the body of the stop wheel, with a first elastic damping part at the moment of impact.

Ainsi, la présente invention permet de supprimer tous les problèmes liés aux chocs violents, tels que l'usure prématurée du bec de blocage, mais aussi la déformation et le couple de tenue en rotation.Thus, the present invention makes it possible to eliminate all the problems associated with violent impacts, such as premature wear of the locking nose, but also deformation and the rotational withstand torque.

Claims (14)

Mécanisme horloger (1) pourvu d'un rouage (3) et d'un dispositif de blocage (4) dudit rouage (3), ledit dispositif de blocage (4) comprenant un mobile d'arrêt (6) agencé pour pouvoir être entrainé en rotation par le rouage (3) et formé d'un pignon (6a) et d'une roue d'arrêt (6b), ladite roue d'arrêt (6b) étant agencée pour porter un bec de blocage (8), et un organe de blocage (10) mobile entre une première position d'arrêt dans laquelle l'organe de blocage (10) coopère avec le bec de blocage (8) pour arrêter le mobile d'arrêt (6) afin d'immobiliser le rouage (3) et une seconde position dans laquelle l'organe de blocage (10) ne coopère pas avec le mobile d'arrêt (6), caractérisé en ce que le dispositif de blocage (4) comprend en outre un organe élastique (14) porté par la roue d'arrêt (6b) du mobile d'arrêt (6) et agencé pour relier le bec de blocage (8) à ladite roue d'arrêt (6b) et pour permettre, lors d'un choc entre l'organe de blocage (10) et le bec de blocage (8), un amortissement dudit choc comprenant au moins une partie élastique.Watchmaking mechanism (1) provided with a gear train (3) and a locking device (4) of said gear train (3), said locking device (4) comprising a stop wheel (6) arranged to be able to be driven rotated by the gear train (3) and formed of a pinion (6a) and a stop wheel (6b), said stop wheel (6b) being arranged to carry a locking nose (8), and a locking member (10) movable between a first stop position in which the locking member (10) cooperates with the locking nose (8) to stop the stop mobile (6) in order to immobilize the gear train (3) and a second position in which the locking member (10) does not cooperate with the stop piece (6), characterized in that the locking device (4) further comprises an elastic member (14) carried by the stop wheel (6b) of the stop wheel (6) and arranged to connect the locking spout (8) to said stop wheel (6b) and to allow, upon impact between the locking member (10) and the locking spout (8), a damping of said shock comprising at least one elastic part. Mécanisme selon la revendication précédente, caractérisé en ce que la roue d'arrêt (6b) est formée d'un corps (6c) solidaire du pignon (6a) et en ce que l'organe élastique (14) comprend une première extrémité (14a) qui est solidaire du corps (6c) et une seconde extrémité (14b) libre, solidaire du bec de blocage (8).Mechanism according to the preceding claim, characterized in that the stop wheel (6b) is formed of a body (6c) integral with the pinion (6a) and in that the elastic member (14) comprises a first end (14a ) which is integral with the body (6c) and a second free end (14b), integral with the locking spout (8). Mécanisme selon la revendication 2, caractérisé en ce que le corps (6c) de la roue d'arrêt (6b) comprend au moins une découpe (18) agencée pour former, dans le corps (6c) restant, l'organe élastique (14) venu de matière, la seconde extrémité (14b) de l'organe élastique (14) étant agencée pour former le bec de blocage (8).Mechanism according to Claim 2, characterized in that the body (6c) of the stop wheel (6b) comprises at least one cutout (18) arranged to form, in the remaining body (6c), the elastic member (14 ) integrally, the second end (14b) of the elastic member (14) being arranged to form the locking spout (8). Mécanisme selon la revendication 2, caractérisé en ce que l'organe élastique (14) est sous la forme d'un ressort disposé sur le corps (6c) de la roue d'arrêt (6b) et dont la première extrémité (14a) est solidaire dudit corps (6c) et la seconde extrémité (14b) est libre et porte le bec de blocage (8).Mechanism according to Claim 2, characterized in that the elastic member (14) is in the form of a spring arranged on the body (6c) of the stop wheel (6b) and whose first end (14a) is integral with said body (6c) and the second end (14b) is free and carries the locking spout (8). Mécanisme selon la revendication 1, caractérisé en ce que l'organe élastique (14) est agencé pour permettre, lors d'un choc entre l'organe de blocage (10) et le bec de blocage (8), un amortissement dudit choc comprenant une partie élastique et une partie dissipative d'énergie.Mechanism according to Claim 1, characterized in that the elastic member (14) is arranged to allow, upon an impact between the locking member (10) and the locking beak (8), a damping of said shock comprising an elastic part and an energy dissipative part. Mécanisme selon la revendication 5, caractérisé en ce que la roue d'arrêt (6b) est formée d'un corps (6c) solidaire du pignon (6a) et portant une goupille (20), et en ce que l'organe élastique (14) est sous la forme d'un ressort disposé sur le corps (6c) de la roue d'arrêt (6b) et dont une première extrémité (14a) est solidaire du corps (6c) et une seconde extrémité (14b) est libre et solidaire du bec de blocage (8), ladite seconde extrémité (14b) comprenant un logement (22) dans lequel ladite goupille (20) peut circuler.Mechanism according to Claim 5, characterized in that the stop wheel (6b) is formed by a body (6c) integral with the pinion (6a) and carrying a pin (20), and in that the elastic member ( 14) is in the form of a spring arranged on the body (6c) of the stop wheel (6b) and of which a first end (14a) is integral with the body (6c) and a second end (14b) is free and integral with the locking spout (8), said second end (14b) comprising a housing (22) in which said pin (20) can circulate. Mécanisme selon la revendication 5, caractérisé en ce que la roue d'arrêt (6b) comprend un corps (6c) solidaire du pignon (6a) et une planche (24) montée libre en rotation par rapport audit corps (6c) et solidaire du bec de blocage (8), en ce que l'organe élastique (14) est agencé pour lier solidairement en rotation le corps (6c) et la planche (24) lorsque l'organe de blocage (10) n'est pas dans sa première position d'arrêt et pour permettre un déplacement relatif entre le corps (6c) et la planche (24) lors d'un choc entre l'organe de blocage (10) et le bec de blocage (8) lorsque l'organe de blocage (10) est passé dans sa première position d'arrêt, et en ce que la planche (24) et le corps (6c) présentent respectivement des surfaces en contact les unes des autres agencées pour générer des frottements.Mechanism according to Claim 5, characterized in that the stop wheel (6b) comprises a body (6c) secured to the pinion (6a) and a board (24) mounted to rotate freely relative to said body (6c) and secured to the locking spout (8), in that the elastic member (14) is arranged to securely rotate the body (6c) and the board (24) when the locking member (10) is not in its first stop position and to allow relative movement between the body (6c) and the board (24) upon impact between the locking member (10) and the locking spout (8) when the locking member blocking (10) is passed into its first stop position, and in that the board (24) and the body (6c) respectively have surfaces in contact with each other arranged to generate friction. Mécanisme selon la revendication 7, caractérisé en ce que l'organe élastique (14) est sous la forme d'un ressort disposé sur le corps (6c) de la roue d'arrêt (6b) et qui comprend une première extrémité (14a) qui est solidaire du corps (6c) de la roue d'arrêt (6b), et une seconde extrémité (14b) qui est fixée à la planche (24) au moyen d'un élément de fixation (26), et en ce que le corps (6c) comprend une lumière (28) dans laquelle ledit élément de fixation (26) peut circuler lors d'un déplacement relatif entre le corps (6c) et la planche (24).Mechanism according to claim 7, characterized in that the elastic member (14) is in the form of a spring arranged on the body (6c) of the stop wheel (6b) and which comprises a first end (14a) which is integral with the body (6c) of the stop wheel (6b), and a second end (14b) which is fixed to the board (24) by means of a fixing element (26), and in that the body (6c) comprises a lumen (28) in which said fixing element (26) can circulate during a relative movement between the body (6c) and the board (24). Mécanisme selon l'une des revendications 7 et 8, caractérisé en ce que le corps (6c) présente sur son pourtour périphérique au moins un bras élastique (30) radial agencé pour être au contact de la planche (24) de manière à générer des frottements.Mechanism according to one of claims 7 and 8, characterized in that the body (6c) has on its peripheral periphery at least one radial elastic arm (30) arranged to be in contact with the board (24) so as to generate friction. Mécanisme selon l'une des revendications précédentes, caractérisé en ce que l'organe de blocage (10) comprend un levier portant un nez (10a) agencé pour coopérer avec le bec de blocage (8) du mobile d'arrêt (6).Mechanism according to one of the preceding claims, characterized in that the blocking member (10) comprises a lever carrying a nose (10a) arranged to cooperate with the blocking spout (8) of the stop wheel (6). Mécanisme selon l'une des revendications précédentes, caractérisé en ce qu'il comprend un organe de commande (12) agencé pour commander le positionnement de l'organe de blocage (10) dans l'une de ses première et seconde positions.Mechanism according to one of the preceding claims, characterized in that it comprises a control member (12) arranged to control the positioning of the locking member (10) in one of its first and second positions. Mécanisme selon l'une des revendications précédentes, caractérisé en ce que le pignon (6a) du mobile d'arrêt (6) engrène avec un autre mobile (3e) du rouage (3).Mechanism according to one of the preceding claims, characterized in that the pinion (6a) of the stop wheel (6) meshes with another wheel unit (3e) of the gear train (3). Mécanisme selon l'une des revendications précédentes, caractérisé en ce qu'il comprend un dispositif à force constante ou un remontoir d'égalité.Mechanism according to one of the preceding claims, characterized in that it comprises a constant force device or an equalizer winder. Pièce d'horlogerie, telle que montre ou pendule, comprenant un mécanisme horloger (1) selon l'une quelconque des revendications précédentes.Timepiece, such as a watch or pendulum, comprising a watch mechanism (1) according to any one of the preceding claims.
EP19192436.4A 2019-08-20 2019-08-20 Timepiece mechanism comprising a locking device Active EP3783444B1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1586961A2 (en) * 2004-04-13 2005-10-19 Pierre Kunz SA Instant perpetual calendar
US20090067296A1 (en) * 2007-09-07 2009-03-12 Lange Uhren Gmbh Timepiece
CH707181A2 (en) * 2012-11-14 2014-05-15 Patek Philippe Sa Geneve Clockwork device for use in clockwork movement of e.g. wristwatch, has control unit kinematically connected to jumping wheel and arranged to start action in minute jumping display mechanism at instants corresponding to jumps
EP3401739A1 (en) 2017-05-08 2018-11-14 Patek Philippe SA Genève Timepiece movement comprising a constant force device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1586961A2 (en) * 2004-04-13 2005-10-19 Pierre Kunz SA Instant perpetual calendar
US20090067296A1 (en) * 2007-09-07 2009-03-12 Lange Uhren Gmbh Timepiece
CH707181A2 (en) * 2012-11-14 2014-05-15 Patek Philippe Sa Geneve Clockwork device for use in clockwork movement of e.g. wristwatch, has control unit kinematically connected to jumping wheel and arranged to start action in minute jumping display mechanism at instants corresponding to jumps
EP3401739A1 (en) 2017-05-08 2018-11-14 Patek Philippe SA Genève Timepiece movement comprising a constant force device

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