EP3462251B1 - Time-setting mechanism for a clock movement - Google Patents
Time-setting mechanism for a clock movement Download PDFInfo
- Publication number
- EP3462251B1 EP3462251B1 EP17193963.0A EP17193963A EP3462251B1 EP 3462251 B1 EP3462251 B1 EP 3462251B1 EP 17193963 A EP17193963 A EP 17193963A EP 3462251 B1 EP3462251 B1 EP 3462251B1
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- European Patent Office
- Prior art keywords
- immobilizing
- wheel
- setting
- arms
- locking
- 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.)
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- 230000007246 mechanism Effects 0.000 title claims description 23
- 238000004804 winding Methods 0.000 claims description 19
- 230000003100 immobilizing effect Effects 0.000 claims 27
- 230000000903 blocking effect Effects 0.000 description 21
- 230000008901 benefit Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
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- 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
- G04B27/00—Mechanical devices for setting the time indicating means
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- 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
- G04B27/00—Mechanical devices for setting the time indicating means
- G04B27/02—Mechanical devices for setting the time indicating means by making use of the winding means
- G04B27/04—Mechanical devices for setting the time indicating means by making use of the winding means with clutch wheel
- G04B27/045—Changing the winding position to the setting position and vice versa is done with an independant part of the winding or setting mechanism
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- 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
- G04B27/00—Mechanical devices for setting the time indicating means
- G04B27/02—Mechanical devices for setting the time indicating means by making use of the winding means
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- 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
-
- 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
- G04B27/00—Mechanical devices for setting the time indicating means
- G04B27/02—Mechanical devices for setting the time indicating means by making use of the winding means
- G04B27/04—Mechanical devices for setting the time indicating means by making use of the winding means with clutch 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
- G04B3/00—Normal winding of clockworks by hand or mechanically; Winding up several mainsprings or driving weights simultaneously
- G04B3/04—Rigidly-mounted keys, knobs or crowns
Definitions
- the present invention relates to a time-setting mechanism for a watch movement of a watch comprising a device for blocking the cog of the time-setting in order to avoid movement of the hands in the event of impacts.
- a friction system is generally provided for this purpose in order to guarantee an easy adjustment of the time while ensuring a reliable driving of the hands by the gear train during the running of the watch.
- a well-known friction system is lanterning, which consists of adjusting the carriageway on the center pinion rod in order to obtain a "greasy friction" to allow setting the time without causing the train of finishing.
- the thickness of the roadway is reduced in the middle and is pinched by means of a tool dedicated for this purpose so as to form a projection which presses against a conical notch of the rod of the center pinion.
- the document CH 704 331 discloses a time-setting mechanism for a watch movement according to the preamble of claim 1.
- the document WO 2007/115984 discloses a timepiece with a mechanism with two time zones to indicate a reference time and a corresponding local time.
- the offset between the local time and the reference time is adjustable.
- the documents CH 237 215 , JP S49 62457 , JP H02 683 and GB 2,071,364 disclose locking devices of a train different from the time setting train.
- the aim of the present invention is to provide a time-setting mechanism in order in particular to overcome the drawbacks of the aforementioned state of the art and to avoid any drift in the display of the time during impacts important to the watch.
- the time-setting mechanism according to the invention further comprises a device for blocking the time-setting train.
- This locking device comprises a first and second locking arm and a wheel blocking in engagement with the time-setting train.
- the first and second locking arms are arranged, on the one hand, to be engaged with the locking wheel in a so-called locked configuration in which the time-setting train is locked and, on the other hand, to be released from the locking wheel in a so-called unlocked configuration in which the sliding pinion is free to mesh with the time train.
- the locking device comprises for this purpose a locking / unlocking lever engaged with the sliding pinion and arranged to cooperate with the first and second locking arms in order to effect a transition from the locked configuration to the unlocked configuration and vice versa when the winding stem is brought from a running position to a time setting position and vice versa.
- the locking wheel has a toothing whose apex of each tooth has a curved profile.
- the first and second locking arms each have a portion having a curved edge provided with microtoothing.
- the radius of curvature of the curved edge of the first and second locking arms corresponds essentially to the radius of the head circle of the locking wheel.
- These micro teeth are intended to come into contact with the teeth of the locking wheel in the locked configuration of the locking device.
- the particular profile of the toothing of the locking wheel and of the micro toothing has the advantage of allowing angular precision of locking of the wheel so that the deviation of the hands is negligible after correction of the time when the stem of winder is returned to the on position.
- the micro teeth of the first and second locking arms are symmetrical with respect to each other so as to prevent any rotation of the locking wheel in both directions.
- first and second locking arms are superposed and mounted to pivot relative to each other about a common axis.
- the curved edge of the lower, respectively upper locking arm is intended to come into contact with a lower, respectively upper portion of the toothing of the locking wheel.
- one or both arms of blocking may include an additional thickness in the part comprising the microtoothings arranged so as to provide support for the two arms of the same height on the blocking wheel.
- the locking / unlocking lever is arranged to pivot around a pivot when the winding stem is brought from a running position to a time setting position and vice versa.
- This locking / unlocking rocker comprises two arms extending on either side of the pivot. One end of one of the two arms is in engagement with the sliding pinion whereas the other of the two arms has a distal portion intended to cooperate with the upper locking arm and a proximal portion intended to cooperate with the lower locking arm.
- the distal portion is in abutment against a rectilinear flank of the upper locking arm.
- the proximal portion for its part, is in abutment or is intended to abut against an actuating element, preferably a pin, of the lower locking arm in order to release the locking arms from the toothing of the locking wheel when the locking / unlocking rocker pivots under the effect of the axial displacement of the sliding pinion.
- the locking wheel is the timer wheel of the time-setting train.
- the locking wheel is mounted integral with the axis of a standard timer wheel of the time-setting train.
- the time-setting mechanism comprises, conventionally, a pull tab 12 comprising a lug 12a housed in a recess in the winding stem 10, a rocker 14 arranged to cooperate with the pull tab 12, and a sliding pinion 16.
- a pull tab 12 comprising a lug 12a housed in a recess in the winding stem 10
- a rocker 14 arranged to cooperate with the pull tab 12, and a sliding pinion 16.
- This is adjusted on a segment 17a of square cross section of a secondary rod 17 so as to be able to move along this segment 17a from a first axial position, in which the sliding pinion 16 is engaged with a pinion winder 18, in a second axial position, in which the sliding pinion 16 is engaged with a reference 19 of the time-setting train as illustrated in the figure 2b .
- the lever 14 has an end 14a arranged in a circular groove 16a of the sliding pinion 16.
- the pull tab 12 pivots and pushes back the rocker 14 which slides the sliding pinion 16 along the segment 17a of the secondary rod 17.
- the sliding pinion 16 thus emerges from the winding pinion 18 to come to mesh with the gear 19 of the time-setting train for the needle control.
- the time-setting mechanism further comprises a device for blocking the time-setting train.
- This device includes a locking wheel 20 configured to cooperate on the one hand with the time-setting train and on the other hand with a first and second locking arm 22, 30.
- the locking wheel 20 has a toothing whose apex of each tooth has a curved profile. This particular profile of the toothing of the locking wheel 20 makes it possible, on the one hand, to retain a toothing allowing engagement with the sliding pinion 16 via the references for setting the time, in order to fulfill the function of a standard timer wheel, and on the other hand, to increase the angular precision of the blocking by the first and second blocking arm 22, 30.
- the latter each comprise a portion 28, 32 having a curved edge extending along an arc of a circle of an angle preferably between 30 ° and 40 °, the radius of curvature of which corresponds essentially to the radius of the head circle of the locking wheel 20.
- the curved edges of the locking arms 22, 30 are provided with microtoothing in order to increase the points of contact with the teeth of the locking wheel 20 when the curved edges are in contact with the latter . This has the advantage of increasing the angular precision of the blocking.
- the first and second locking arms 22, 30 are moreover superimposed and mounted pivoting with respect to one another around a tenon 36.
- the microtoothings of the upper locking arm 22 and of the lower locking arm 30 are held against an upper, respectively lower portion of the teeth of the locking wheel 20 by a spring (220 and 300), when the locking device is in a locked configuration.
- These two micro teeth have a symmetry with respect to an axis passing through the center of the locking wheel 20 and by the pivot axis of the two blocking arms 22, 30. The two micro teeth are therefore oriented in an opposite direction.
- the pavement has the advantage of being able to be simply adjusted on the barrel of the minute wheel without any "greasy friction", which makes it possible to overcome the problems wear of the time setting gear or the risk of damaging the finishing gear when the "greasy friction" is not optimal.
- the first locking arm 22 comprises a spout 26 provided with a rectilinear flank 24 extending from the tip of the spout 26 to a corner 25 forming an obtuse angle.
- the second locking arm 30 comprises, for its part, a pin 34 extending vertically relative to the plane in which the second arm is arranged to pivot
- the device for blocking the time-setting train further comprises a locking / unlocking lever 40 intended to lock and unlock the locking wheel 20.
- this locking / unlocking lever 40 is arranged to pivot around a tenon 46 and has two arms 42, 44 extending on either side of the tenon 46.
- One end of one of the two arms 42 is housed in the circular groove 16a of the sliding pinion 16 opposite the end 14a of the rocker 14.
- the end of the arm 42 of the locking / unlocking rocker 40 and the end 14a of the rocker 14 are arranged on either side of a rod connecting the part of sliding pinion 16 intended to mesh with the gear 19 and the part of the sliding pinion 16 intended to mesh with the winding pinion 18.
- the other of the two arms 44 of the locking / unlocking lever 40 is similar to a bent arm comprising a distal portion 44a and a proximal portion 44b ( figure 2a ).
- the distal portion 44a has a pointed end housed in the corner 45 of the first locking arm 22 when the device for blocking the time-setting train is in a locked configuration.
- the proximal portion 44b is intended to come into abutment against the pin 34 of the second locking arm 30 when the winding stem 10 is brought into a position for setting the time.
- the device for blocking the time-setting train is in a locked configuration, that is to say that the blocking wheel 20 is locked by the first and second blocking arm 22, 30 thus guaranteeing the blocking of the time-setting mechanism in the event of large shocks to the watch during normal running of the watch.
- the winding stem 10 When it is necessary to set the time, the winding stem 10 is brought from a first axial position corresponding to a running position of the watch to a second axial position corresponding to a setting position. watch time.
- the axial displacement of the winding stem 10 actuates the pulling rod 12 in rotation, which will in turn actuate the rocker 14 so that its end 14a moves the sliding pinion 16 along the segment 17a of the secondary stem 17 from a first position axial, in which it is engaged with the winding pinion 18 to a second axial position, in which it is engaged with the reference 19 of the time train.
- the arms 42, 44 of the locking / unlocking lever 40 pivot around the tenon 46 counterclockwise under the action of the sliding pinion 16 on the end of the arm 42 when it moves from its first position to its second axial position.
- the pointed end of the distal portion 44a of the arm 44 will exert a stress on the straight flank 24 of the first arm blocking 22, while moving along this sidewall 24 so that the first arm 22 pivots around the lug 36 so as to release the first microtoothing of the locking wheel 20.
- the proximal portion 44b comes to bear against the pin 34 of the second locking arm 30 in order to release the second micro-toothing from the locking wheel 20.
- the locking device as illustrated in the figure 2b is in an unlocked configuration and setting the time has the advantage of being able to be done without risk of damaging the gear train since, as mentioned above, the pavement is simply adjusted on the barrel of the minute wheel without any "Greasy friction".
- the winding stem 10 is returned to the first axial position, and the locking / unlocking lever 40 pivots around its tenon 46 clockwise, which brings the arm 44 back into the position illustrated in figure 2a .
- the first and second coupling arms 22, 30 pivot around the tenon 36 under the action of their respective return spring in order to bring back and maintain their respective micro teeth against the teeth of the locking wheel 20 thus locking the locking device so that the watch is insensitive to possible large shocks.
- the locking wheel 20 could fulfill only the function of blocking the time-setting train without fulfilling the function of the timer wheel.
- the teeth of the locking wheel will then only be dedicated to cooperate with the teeth of the locking arms and the number of teeth may be increased to improve the angular precision of the locking.
- the sliding pinion is adjusted to move on a segment of a secondary rod offset from the winding rod.
- this construction is dictated by the constraints of a particular watch movement.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromechanical Clocks (AREA)
- Measurement Of Predetermined Time Intervals (AREA)
- Transmission Devices (AREA)
- Telephone Set Structure (AREA)
- Mechanical Operated Clutches (AREA)
Description
La présente invention concerne un mécanisme de mise à l'heure pour un mouvement horloger d'une montre comportant un dispositif de blocage du rouage de la mise à l'heure afin d'éviter un déplacement des aiguilles en cas de chocs.The present invention relates to a time-setting mechanism for a watch movement of a watch comprising a device for blocking the cog of the time-setting in order to avoid movement of the hands in the event of impacts.
Pendant la mise à l'heure, les aiguilles doivent pouvoir tourner facilement, sous l'action de la tige de remontoir, mais elles doivent aussi être entraînées sûrement, pendant la marche de la montre. Un système de friction est généralement prévu à cet effet afin de garantir un réglage facile de l'heure tout en assurant un entraînement fiable des aiguilles par le rouage de finissage au cours de la marche de la montre.During the time setting, the hands must be able to turn easily, under the action of the winding stem, but they must also be driven surely, while the watch is running. A friction system is generally provided for this purpose in order to guarantee an easy adjustment of the time while ensuring a reliable driving of the hands by the gear train during the running of the watch.
Un système de friction bien connu est le lanternage qui consiste à ajuster la chaussée sur la tige du pignon du centre afin d'obtenir un « frottement gras » pour permettre la mise à l'heure sans entrainer le rouage de finissage. A cet effet, l'épaisseur de la chaussée est diminuée en son milieu et est pincée au moyen d'un outil dédié à cet effet de manière à former une saillie qui presse contre une entaille conique de la tige du pignon du centre.A well-known friction system is lanterning, which consists of adjusting the carriageway on the center pinion rod in order to obtain a "greasy friction" to allow setting the time without causing the train of finishing. For this purpose, the thickness of the roadway is reduced in the middle and is pinched by means of a tool dedicated for this purpose so as to form a projection which presses against a conical notch of the rod of the center pinion.
Le lanternage est toutefois une opération délicate qui demande un contrôle rigoureux pour s'assurer que la valeur du couple, engendré par la friction entre la chaussée et la tige du pignon du centre, est optimale. En effet, un couple de friction trop faible peut entraîner, lors de chocs, un déplacement des aiguilles dû à leur balourd. Par ailleurs, un couple trop fort peut engendrer la détérioration du rouage de mise à l'heure (pignon coulant-renvois-minuterie) ou du rouage de finissage (centre-moyenne-seconde-échappement) au cours de la mise à l'heure.Lanterning is however a delicate operation which requires rigorous control to ensure that the value of the torque, generated by the friction between the roadway and the center pinion rod, is optimal. Indeed, too low a friction torque can cause, during impacts, a displacement of the needles due to their unbalance. In addition, too strong a couple may cause deterioration of the time-setting train (sliding pinion-references-timer) or the finishing train (center-medium-second-escapement) during the time setting.
Le document
Le document
Les documents
Le document
Par conséquent, la présente invention a pour but de fournir un mécanisme de mise à l'heure afin notamment de pallier les inconvénients de l'état de la technique précités et d'éviter toute dérive de l'affichage de l'heure lors de chocs importants subis par la montre.Consequently, the aim of the present invention is to provide a time-setting mechanism in order in particular to overcome the drawbacks of the aforementioned state of the art and to avoid any drift in the display of the time during impacts important to the watch.
A cet effet, le mécanisme de mise à l'heure pour mouvement horloger, comporte :
- un rouage de mise à l'heure,
- une tige de remontoir agencée pour être déplacée d'une première position axiale dite position de marche à une seconde position axiale dite position de mise à l'heure,
- un pignon coulant agencé pour être déplacé d'une première position axiale dans laquelle le pignon coulant est dégagé du rouage de mise à l'heure à une seconde position axiale dans laquelle le pignon coulant engrène avec le rouage de mise à l'heure, et
- une bascule en prise avec le pignon coulant et agencée pour pivoter, lorsque la tige de remontoir est amenée d'une position de marche à une position de mise à l'heure et inversement, afin d'amener le pignon coulant de la première à la seconde position axiale et inversement.
- a cog of time setting,
- a winding stem arranged to be moved from a first axial position called the on position to a second axial position called the time setting position,
- a sliding pinion arranged to be moved from a first axial position in which the sliding pinion is released from the time-setting gear train to a second axial position in which the sliding pinion meshes with the time-setting gear train, and
- a rocker engaged with the sliding pinion and arranged to pivot, when the winding stem is brought from a running position to a time setting position and vice versa, in order to bring the sliding pinion from the first to the second axial position and vice versa.
Le mécanisme de mise à l'heure selon l'invention comporte en outre un dispositif de blocage du rouage de mise à l'heure. Ce dispositif de blocage comporte un premier et second bras de blocage et une roue de blocage en prise avec le rouage de mise à l'heure. Les premier et second bras de blocage sont agencés, d'une part, pour être en prise avec la roue de blocage dans une configuration dite verrouillée dans laquelle le rouage de mise à l'heure est bloqué et, d'autre part, pour être dégagés de la roue de blocage dans une configuration dite déverrouillée dans laquelle le pignon coulant est libre d'engrener avec le rouage de mise à l'heure. Le dispositif de blocage comporte à cet effet une bascule de verrouillage/déverrouillage en prise avec le pignon coulant et agencée pour coopérer avec les premier et second bras de blocage afin d'effectuer un passage de la configuration verrouillée à la configuration déverrouillée et inversement lorsque la tige de remontoir est amenée d'une position de marche à une position de mise à l'heure et inversement.The time-setting mechanism according to the invention further comprises a device for blocking the time-setting train. This locking device comprises a first and second locking arm and a wheel blocking in engagement with the time-setting train. The first and second locking arms are arranged, on the one hand, to be engaged with the locking wheel in a so-called locked configuration in which the time-setting train is locked and, on the other hand, to be released from the locking wheel in a so-called unlocked configuration in which the sliding pinion is free to mesh with the time train. The locking device comprises for this purpose a locking / unlocking lever engaged with the sliding pinion and arranged to cooperate with the first and second locking arms in order to effect a transition from the locked configuration to the unlocked configuration and vice versa when the winding stem is brought from a running position to a time setting position and vice versa.
Selon une forme de réalisation avantageuse, la roue de blocage comporte une denture dont le sommet de chaque dent présente un profil incurvé. Les premier et second bras de blocage comportent chacun une portion présentant un bord incurvé pourvu d'une micro denture. Le rayon de courbure du bord incurvé du premier et second bras de blocage correspond essentiellement au rayon du cercle de tête de la roue de blocage. Ces micro dentures sont destinées à venir au contact de la denture de la roue de blocage dans la configuration verrouillée du dispositif de blocage. Le profil particulier de la denture de la roue de blocage et des micro dentures à l'avantage de permettre une précision angulaire de blocage de la roue de manière à ce que la déviation des aiguilles est négligeable après correction de l'heure lorsque la tige de remontoir est ramenée dans la position de marche.According to an advantageous embodiment, the locking wheel has a toothing whose apex of each tooth has a curved profile. The first and second locking arms each have a portion having a curved edge provided with microtoothing. The radius of curvature of the curved edge of the first and second locking arms corresponds essentially to the radius of the head circle of the locking wheel. These micro teeth are intended to come into contact with the teeth of the locking wheel in the locked configuration of the locking device. The particular profile of the toothing of the locking wheel and of the micro toothing has the advantage of allowing angular precision of locking of the wheel so that the deviation of the hands is negligible after correction of the time when the stem of winder is returned to the on position.
Selon une forme de réalisation avantageuse, les micro dentures des premier et second bras de blocage sont symétriques l'une par rapport à l'autre de manière à empêcher toute rotation de la roue de blocage dans les deux sens.According to an advantageous embodiment, the micro teeth of the first and second locking arms are symmetrical with respect to each other so as to prevent any rotation of the locking wheel in both directions.
Selon une forme de réalisation avantageuse, les premier et second bras de blocage sont superposés et montés pivotants l'un par rapport à l'autre autour d'un axe commun. Le bord incurvé du bras de blocage inférieur, respectivement supérieur est destiné à venir au contact d'une portion inférieure, respectivement supérieure de la denture de la roue de blocage. Selon une autre variante d'exécution, l'un ou les deux bras de blocage peuvent comporter une surépaisseur dans la partie comportant les micro dentures agencée de manière à proposer un appui des deux bras de même hauteur sur la roue de blocage.According to an advantageous embodiment, the first and second locking arms are superposed and mounted to pivot relative to each other about a common axis. The curved edge of the lower, respectively upper locking arm is intended to come into contact with a lower, respectively upper portion of the toothing of the locking wheel. According to another alternative embodiment, one or both arms of blocking may include an additional thickness in the part comprising the microtoothings arranged so as to provide support for the two arms of the same height on the blocking wheel.
Selon une forme de réalisation avantageuse, la bascule de verrouillage/déverrouillage est agencée pour pivoter autour d'un pivot lorsque la tige de remontoir est amenée d'une position de marche à une position de mise à l'heure et inversement. Cette bascule de verrouillage/déverrouillage comporte deux bras s'étendant de part et d'autre du pivot. Une extrémité d'un des deux bras est en prise avec le pignon coulant alors que l'autre des deux bras comporte une portion distale destinée à coopérer avec le bras de blocage supérieur et une portion proximale destinée à coopérer avec le bras de blocage inférieur.According to an advantageous embodiment, the locking / unlocking lever is arranged to pivot around a pivot when the winding stem is brought from a running position to a time setting position and vice versa. This locking / unlocking rocker comprises two arms extending on either side of the pivot. One end of one of the two arms is in engagement with the sliding pinion whereas the other of the two arms has a distal portion intended to cooperate with the upper locking arm and a proximal portion intended to cooperate with the lower locking arm.
Selon une forme de réalisation avantageuse, la portion distale est en appui contre un flanc rectiligne du bras de blocage supérieur. La portion proximale, quant à elle, est en appui ou est destinée à venir en appui contre un élément d'actionnement, de préférence une goupille, du bras de blocage inférieur afin de dégager les bras de blocage de la denture de la roue de blocage lorsque la bascule de verrouillage/déverrouillage pivote sous l'effet du déplacement axial du pignon coulant.According to an advantageous embodiment, the distal portion is in abutment against a rectilinear flank of the upper locking arm. The proximal portion, for its part, is in abutment or is intended to abut against an actuating element, preferably a pin, of the lower locking arm in order to release the locking arms from the toothing of the locking wheel when the locking / unlocking rocker pivots under the effect of the axial displacement of the sliding pinion.
Selon une forme de réalisation avantageuse, la roue de blocage est la roue de minuterie du rouage de mise à l'heure.According to an advantageous embodiment, the locking wheel is the timer wheel of the time-setting train.
Selon une variante d'exécution, la roue de blocage est montée solidaire à l'axe d'une roue de minuterie standard du rouage de mise à l'heure.According to an alternative embodiment, the locking wheel is mounted integral with the axis of a standard timer wheel of the time-setting train.
D'autres particularités et avantages ressortiront clairement de la description qui en est faite ci-après, à titre indicatif et nullement limitatif, en référence aux dessins annexés, dans lesquels :
- la
figure 1 est une vue en perspective du mécanisme de mise à l'heure de l'invention lorsque le dispositif de blocage est dans une configuration verrouillée selon une forme de réalisation avantageuse; - la
figure 2a est une vue de dessus de lafigure 1 ; - la
figure 2b est une vue de dessus du mécanisme de mise à l'heure lorsque le dispositif de blocage est dans une configuration déverrouillée ; et - la
figure 3 est une vue détaillée des bras de blocage en prise avec la roue de blocage de lafigure 2a .
- the
figure 1 is a perspective view of the time-setting mechanism of the invention when the blocking device is in a locked configuration according to an advantageous embodiment; - the
figure 2a is a top view of thefigure 1 ; - the
figure 2b is a top view of the time-setting mechanism when the blocking device is in an unlocked configuration; and - the
figure 3 is a detailed view of the locking arms engaged with the locking wheel of thefigure 2a .
Faisant référence à la
La bascule 14 comporte une extrémité 14a agencée dans une gorge circulaire 16a du pignon coulant 16. Lorsque la tige de remontoir 10 est tirée pour se positionner dans la position axiale correspondant à la position de mise à l'heure, la tirette 12 pivote et repousse la bascule 14 qui fait glisser le pignon coulant 16 le long du segment 17a de la tige secondaire 17. Le pignon coulant 16 se dégage ainsi du pignon du remontoir 18 pour venir engrener avec le renvoi 19 du rouage de mise à l'heure pour la commande des aiguilles.The
Le mécanisme de mise à l'heure selon l'invention comporte en outre un dispositif de blocage de rouage de mise à l'heure. Ce dispositif comporte une roue de blocage 20 configurée pour coopérer d'une part avec le rouage de mise à l'heure et d'autre part avec un premier et second bras de blocage 22, 30. En référence en particulier à la
Les premier et second bras de blocage 22, 30 sont par ailleurs superposés et montés pivotant l'un par rapport à l'autre autour d'un tenon 36. Les micro dentures du bras de blocage supérieur 22 et du bras de blocage inférieur 30 sont maintenues contre une portion supérieure, respectivement inférieure de la denture de la roue de blocage 20 par un ressort (220 et 300), lorsque le dispositif de blocage est dans une configuration verrouillée. Ces deux micro dentures présentent une symétrie par rapport à un axe passant par le centre de la roue de blocage 20 et par l'axe de pivotement des deux bras de blocages 22, 30. Les deux micro dentures sont donc orientées dans un sens opposé.The first and second locking
Il existe donc un arc-boutement entre la denture de la roue de blocage 20 et la micro denture du premier, respectivement du second bras de blocage 22 lorsque la roue tend à vouloir pivoter respectivement dans le sens horaire et antihoraire. Les deux bras de blocage 22, 30 sont donc nécessaires pour empêcher toute rotation de la roue de blocage dans un sens comme dans l'autre. Cela permet de garantir le blocage du rouage de mise à l'heure en cas de chocs importants sur la montre contre lesquels un système de friction classique ne peut résister. Il convient de noter que, contrairement aux mécanismes de mise à l'heure classiques, la chaussée a l'avantage de pouvoir être simplement ajustée sur le canon de la roue des minutes sans aucun « frottement gras », ce qui permet de pallier les problèmes d'usure du rouage de mise à l'heure ou les risques d'endommager le rouage de finissage lorsque le « frottement gras » n'est pas optimal.There is therefore a bracing between the teeth of the
En référence aux
Le dispositif de blocage du rouage de mise à l'heure comporte en outre une bascule de verrouillage/déverrouillage 40 destinée à verrouiller et déverrouiller la roue de blocage 20. A cet effet, cette bascule de verrouillage/déverrouillage 40 est agencée pour pivoter autour d'un tenon 46 et comporte deux bras 42, 44 s'étendant de part et d'autre du tenon 46. Une extrémité d'un des deux bras 42 est logée dans la gorge circulaire 16a du pignon coulant 16 en regard de l'extrémité 14a de la bascule 14. En d'autres termes, l'extrémité du bras 42 de la bascule de verrouillage/déverrouillage 40 et l'extrémité 14a de la bascule 14 sont agencées de part et d'autre d'une tige reliant la partie de pignon coulant 16 destinée à engrener avec le renvoi 19 et la partie du pignon coulant 16 destinée à engrener avec le pignon de remontage 18.The device for blocking the time-setting train further comprises a locking / unlocking
L'autre des deux bras 44 de la bascule de verrouillage/déverrouillage 40 s'apparente à un bras coudé comportant une portion distale 44a et une portion proximale 44b (
Selon la
Lorsqu'il est nécessaire d'effectuer une mise à l'heure, la tige de remontoir 10 est amenée d'une première position axiale correspondant à une position de marche de la montre à une seconde position axiale correspondant à une position de mise à l'heure de la montre. Le déplacement axial de la tige de remontoir 10 actionne la tirette 12 en rotation, laquelle va actionner à son tour la bascule 14 afin que son extrémité 14a déplace le pignon coulant 16 le long du segment 17a de la tige secondaire 17 d'une première position axiale, dans laquelle il est en prise avec le pignon de remontoir 18 à une seconde position axiale, dans laquelle il est en prise avec le renvoi 19 du train de rouage de mise à l'heure.When it is necessary to set the time, the winding
Au cours de cette séquence, les bras 42, 44 de la bascule de verrouillage/déverrouillage 40 pivotent autour du tenon 46 dans le sens antihoraire sous l'action du pignon coulant 16 sur l'extrémité du bras 42 lorsqu'il se déplace de sa première position à sa seconde position axiale. Au cours de cette séquence, l'extrémité pointue de la portion distale 44a du bras 44 va exercer une contrainte sur le flanc rectiligne 24 du premier bras de blocage 22, tout en se déplaçant le long de ce flanc 24 afin que le premier bras 22 pivote autour du tenon 36 de manière à dégager la première micro denture de la roue de blocage 20. Simultanément, la portion proximale 44b vient en appui contre la goupille 34 du second bras de blocage 30 afin de dégager la seconde micro-denture de la roue de blocage 20.During this sequence, the
Le dispositif de blocage tel qu'illustré à la
Une fois la mise à l'heure effectuée, la tige de remontoir 10 est ramenée dans la première position axiale, et la bascule de verrouillage/déverrouillage 40 pivote autour de son tenon 46 dans le sens horaire, ce qui ramène le bras 44 dans la position illustrée à la
Naturellement, l'invention n'est pas limitée à la forme de réalisation qui vient d'être décrite en référence aux figures et des variantes pourraient être envisagées sans sortir du cadre de l'invention. Par exemple, la roue de blocage 20 pourrait remplir uniquement la fonction de blocage du rouage de mise à l'heure sans remplir la fonction de la roue de minuterie. On pourrait donc avoir une roue de blocage montée solidaire de l'axe d'une roue de minuterie standard, et bloquée par les deux bras de blocage. La denture de la roue de blocage sera alors uniquement dédiée à coopérer avec les dentures des bras de blocage et le nombre de dents pourra être augmenté pour améliorer la précision angulaire du blocage. Par ailleurs, selon la forme de réalisation décrite, le pignon coulant est ajusté pour se déplacer sur un segment d'une tige secondaire désaxée par rapport à la tige de remontoir. Or, cette construction est dictée par les contraintes d'un mouvement horloger particulier. On pourrait donc avoir un mécanisme de mise à l'heure selon l'invention dans lequel le segment 17a fait partie intégrante de la tige de remontoir.Naturally, the invention is not limited to the embodiment which has just been described with reference to the figures and variants could be envisaged without departing from the scope of the invention. For example, the
Claims (10)
- Setting mechanism for a timepiece movement, comprising:a setting gear train,a winder rod (10) adapted to be moved from a first axial position termed a running position to a second axial position termed a setting position,a sliding pinion (16) adapted to be moved from a first axial position in which the sliding pinion is disengaged from the setting gear train to a second axial position in which the sliding pinion meshes with the setting gear train,a lever (14) interengaged with the sliding pinion (16) and adapted to pivot, when the winding rod (10) is moved from a running position to a setting position and vice versa, in order to move the sliding pinion from the first axial position to the second and vice versa, anda device for immobilizing the setting gear train,characterized in that the immobilizing device comprises first and second immobilizing arms (22, 30) and an immobilizing wheel (20) interengaged with the setting gear train, the first and second immobilizing arms being adapted, on the one hand, to the interengaged with the immobilizing wheel (20) in a configuration termed locked in which the setting gear train is immobilized and, on the other hand, to be disengaged from the immobilizing wheel (20) in a configuration termed unlocked in which the sliding pinion (16) is free from meshing with the setting gear train, the immobilizing device comprising to this end a locking/unlocking lever (40) interengaged with the sliding pinion (16) and adapted to cooperate with the first and second immobilizing arms (22, 30) in order to pass from the locked configuration to the unlocked configuration and vice versa when the winding rod (10) is moved from a running position to a setting position and vice versa.
- Mechanism according to Claim 1, characterized in that the immobilizing wheel (20) comprises teeth in which the tip of each tooth has a curved profile and in that the first and second immobilizing arms (22, 30) each comprise a portion (28, 32) having a curved edge provided with microteeth, the radius of curvature of the curved edge essentially corresponding to the radius of the tip circle of the immobilizing wheel (20).
- Mechanism according to Claim 2, characterized in that the microteeth of the first and second immobilizing arms (22, 30) are arranged against the teeth of the immobilizing wheel (20) in the locked configuration and are symmetrical to one another so as to prevent rotation of the immobilizing wheel in either direction.
- Mechanism according to one of claims 2 and 3, characterized in that the first and second immobilizing arms (22, 30) are superposed and mounted to pivot relative to one another about a common axis (36), the curved edge of the lower immobilizing arm (30), respectively the upper immobilizing arm (22), being intended to come into contact with a lower portion, respectively an upper portion, of the teeth of the immobilizing wheel (20).
- Mechanism according to any one of the preceding claims, characterized in that the locking/unlocking lever (40) is adapted to pivot about a pivot (46) when the winding rod (10) is moved from a running position to a setting position and vice versa, and comprises two arms (42, 44) extending on either side of the pivot, one end of one of the two arms being interengaged with the sliding pinion (16) whilst the other of the two arms (42, 44) comprises a distal portion (44a) intended to cooperate with the upper immobilizing arm (22) and a proximal portion intended to cooperate with the lower immobilizing arm (30).
- Mechanism according to Claim 5, characterized in that the distal portion (44a) bears against a rectilinear flank (24) of the upper immobilizing arm (30) and in that the proximal portion (44b) bears against or is intended to come to bear against an actuating element, preferably a pin (34), of the lower immobilizing arm (30) in order to disengage the immobilizing arm (22, 30) from the teeth of the immobilizing wheel (20) when the locking/unlocking lever (40) is pivoted by the axial movement of the sliding pinion (16).
- Mechanism according to any one of the preceding claims, characterized in that the immobilizing wheel (20) is the time at wheel of the setting gear train.
- Mechanism according to any one of Claims 1 to 6, characterized in that the immobilizing wheel is mounted on and fastened to the shaft of a standard timer wheel of the setting gear train.
- Timepiece movement comprising the mechanism according to any one of the preceding claims.
- Timepiece comprising the timepiece movement according to Claim 9.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP17193963.0A EP3462251B1 (en) | 2017-09-29 | 2017-09-29 | Time-setting mechanism for a clock movement |
US16/104,180 US10955799B2 (en) | 2017-09-29 | 2018-08-17 | Setting mechanism for timepiece movement |
JP2018173313A JP6547048B2 (en) | 2017-09-29 | 2018-09-18 | Setting mechanism for the timepiece movement |
CN201811139626.5A CN109581852B (en) | 2017-09-29 | 2018-09-28 | Setting mechanism for a timepiece movement |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP17193963.0A EP3462251B1 (en) | 2017-09-29 | 2017-09-29 | Time-setting mechanism for a clock movement |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3462251A1 EP3462251A1 (en) | 2019-04-03 |
EP3462251B1 true EP3462251B1 (en) | 2020-06-10 |
Family
ID=59997218
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17193963.0A Active EP3462251B1 (en) | 2017-09-29 | 2017-09-29 | Time-setting mechanism for a clock movement |
Country Status (4)
Country | Link |
---|---|
US (1) | US10955799B2 (en) |
EP (1) | EP3462251B1 (en) |
JP (1) | JP6547048B2 (en) |
CN (1) | CN109581852B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN113653799B (en) * | 2021-09-01 | 2022-08-12 | 西安轻工业钟表研究所有限公司 | Self-insurance unlocking mechanism |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
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CH237215A (en) * | 1943-12-20 | 1945-04-15 | Sa A Schild | Winding watch movement. |
JPS4962457U (en) * | 1972-09-13 | 1974-05-31 | ||
JPS56112673A (en) | 1980-02-12 | 1981-09-05 | Citizen Watch Co Ltd | Correcting device for display in electronic watch |
CH640686B (en) * | 1980-10-23 | Ebauchesfabrik Eta Ag | SLIDING CONTROL DEVICE FOR WATCH. | |
JPH0619109Y2 (en) * | 1988-06-10 | 1994-05-18 | オリエント時計株式会社 | Watch wheel train regulation mechanism |
FR2750513B1 (en) * | 1996-06-26 | 1998-08-07 | Ebauchesfabrik Eta Ag | WATCHMAKING PIECE WITH TIME-SETTING MECHANISM BY DIRECT ACTION OF THE DASH |
DE60233783D1 (en) | 2002-05-28 | 2009-11-05 | Manuf Et Fabrique De Montres E | Inhibition for watches |
CN2610371Y (en) * | 2003-03-31 | 2004-04-07 | 陈毅力 | Clock mechanism for setting time |
EP2008159B1 (en) * | 2006-04-07 | 2010-06-09 | Frédéric Piguet S.A. | Timepiece comprising a dual time zone mechanism |
DE602006001298D1 (en) * | 2006-05-31 | 2008-07-03 | Montres Breguet Sa | Clock comprising an improved time setting device |
DE602007003075D1 (en) * | 2007-04-18 | 2009-12-17 | Eta Sa Mft Horlogere Suisse | Anchor escapement comprising two escapement gears |
ATE449985T1 (en) * | 2007-04-18 | 2009-12-15 | Eta Sa Mft Horlogere Suisse | ESCAPEMENT COMPRISING TWO ESCAPE WHEELS |
CN102262390B (en) * | 2010-05-28 | 2012-11-21 | 天津海鸥表业集团有限公司 | Winding hand-setting conversion mechanism of watch |
CH704331B1 (en) * | 2011-01-13 | 2015-05-15 | Gfpi S A | Timepiece. |
EP2487546B1 (en) * | 2011-02-11 | 2021-06-30 | Montres Journe S.A. | High-performance bi-axial escapement, or HPBE |
EP2565728B1 (en) * | 2011-08-29 | 2018-05-09 | ETA SA Manufacture Horlogère Suisse | Independent control mechanism for a timepiece |
CN103048911B (en) * | 2011-10-13 | 2014-12-17 | 天津海鸥表业集团有限公司 | Winding and needle pulling mechanism of mechanical clock |
US9052694B2 (en) * | 2012-06-07 | 2015-06-09 | Detra Sa | Escapement device for timepiece |
CN202995270U (en) * | 2012-12-12 | 2013-06-12 | 天王电子(深圳)有限公司 | Mechanical watch and winding and hand-setting mechanism of mechanical watch |
-
2017
- 2017-09-29 EP EP17193963.0A patent/EP3462251B1/en active Active
-
2018
- 2018-08-17 US US16/104,180 patent/US10955799B2/en active Active
- 2018-09-18 JP JP2018173313A patent/JP6547048B2/en active Active
- 2018-09-28 CN CN201811139626.5A patent/CN109581852B/en active Active
Also Published As
Publication number | Publication date |
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JP6547048B2 (en) | 2019-07-17 |
US10955799B2 (en) | 2021-03-23 |
CN109581852A (en) | 2019-04-05 |
EP3462251A1 (en) | 2019-04-03 |
US20190101867A1 (en) | 2019-04-04 |
JP2019066469A (en) | 2019-04-25 |
CN109581852B (en) | 2020-12-11 |
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