EP2919077B1 - Device for driving an analogue indicator, in particular a date ring - Google Patents
Device for driving an analogue indicator, in particular a date ring Download PDFInfo
- Publication number
- EP2919077B1 EP2919077B1 EP15156373.1A EP15156373A EP2919077B1 EP 2919077 B1 EP2919077 B1 EP 2919077B1 EP 15156373 A EP15156373 A EP 15156373A EP 2919077 B1 EP2919077 B1 EP 2919077B1
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- EP
- European Patent Office
- Prior art keywords
- toothing
- pins
- drive wheel
- timepiece movement
- movement according
- Prior art date
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- 230000035939 shock Effects 0.000 description 3
- 230000000703 anti-shock Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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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
- G04B13/00—Gearwork
- G04B13/02—Wheels; Pinions; Spindles; Pivots
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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
- G04B13/02—Wheels; Pinions; Spindles; Pivots
- G04B13/027—Wheels; Pinions; Spindles; Pivots planar toothing: shape and design
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- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C17/00—Indicating the time optically by electric means
- G04C17/005—Indicating the time optically by electric means by discs
- G04C17/0058—Indicating the time optically by electric means by discs with date indication
- G04C17/0066—Indicating the time optically by electric means by discs with date indication electromagnetically driven, e.g. intermittently
Definitions
- the present invention relates to the field of watch movements having an analog display.
- the invention relates to a drive device for an analog indicator, in particular a date ring.
- analog indicators Various drive devices of an analog indicator are known to those skilled in the art.
- a known problem of analog indicators comes from the fact that they are driven by a drive device generally comprising intermediate elements between a motor and the analog indicator. In the case where separate and stationary display positions are provided for a certain period of time, given the manufacturing tolerances and the necessary clearance between the various elements of the driving device, the precise positioning of the indicator is not possible. not guaranteed without holding means in position.
- the patent application GB 2205181 A discloses a relatively complex device for the two-way drive of a date ring.
- This device comprises a support formed by a drive wheel pivoted at its center and driven in rotation by a bidirectional motor.
- On the drive wheel are mounted two pawls respectively pivoting about two respective axes which are spaced from the axis of rotation of the drive wheel.
- a spring arranged on the drive wheel exerts a restoring force on the two pawls.
- These two pawls are arranged to be able to drive the date ring respectively in the two directions of rotation, each of the two pawls retracting when the ring is driven by the other. Since the drive device proposed in this document has a significant tangential clearance between the ends of the two pawls and the toothing of the date ring, there is provided a jumper to precisely maintain the date ring in the plurality distinct display positions.
- the object of the present invention is to provide a device for driving an analog indicator, in particular a date ring, which makes it possible to ensure precise positioning of the indicator without requiring a positioning jumper.
- Another object of the invention is to provide such a drive device that can withstand shocks.
- the subject of the present invention is a watch movement equipped with an analogue indicator of a plurality of distinct data which is arranged for this purpose to be kept stationary at least temporarily in any position of a plurality of positions of display, this analog indicator having a toothing mechanically coupled to a drive device.
- the latter includes a motor, a driving mobile provided with meshing means with the toothing and a support on which is mounted the drive wheel.
- the support of the drive wheel is mounted on a base so as to be pivotable about a first axis and the drive wheel is rotatably mounted on the support about a second axis remote from the first axis.
- the driving device further comprises an elastic means exerting a lateral force on the support so that the meshing means of the drive wheel press against the toothing of the analog indicator, these meshing means and the toothing presenting respective profiles selected so that, at least in said plurality of distinct display positions of the analog indicator, the drive wheel and the analog indicator meshing substantially without tangential clearance under the action of the elastic means.
- the elastic means is, in a variant, formed by a spring blade which presses laterally against the support of the drive wheel.
- the drive device comprises a motor, of which only the pinion of its rotor 9 is shown in the figures, an intermediate wheel 10 and a drive wheel 8 or 8A of the date ring.
- the engine is in a first variant a mechanical engine of the barrel type, while in another variant there is provided a clockwise electromechanical motor.
- the intermediate wheel 10 is arranged between the rotor 9 of the motor and the drive wheel, its pinion meshing with this drive wheel.
- the drive wheel 8 or 8A is provided with only two pins which rise from the central part of this wheel and which are aligned with the axis of rotation of this drive wheel and diametrically opposed. These two pins form meshing means of the drive wheel with the internal toothing 18 of the date ring.
- the two pins 12 and 13 are respectively provided with two rollers 14 and 15.
- both pins 12A and 13A do not have rollers.
- meshing means there are mechanical coupling means between the date ring and the drive wheel.
- the meshing means are constituted here on the one hand by the two pins, where appropriate provided with their respective rollers, and on the other hand by the internal toothing 18 of the date ring.
- the drive wheel 8 or 8A is mounted on a support 22 which has a fixed pivot 34 arranged on a base 32 of larger diameter, this base defining a stop on which the drive wheel rests.
- the fixed pivot defines the axis of rotation 36 of this drive wheel which has a central hole 38 in which is introduced this fixed pivot.
- the support is mounted on a plate 24 and pivots about a pivot axis 26 which is defined by a shaft 28 passing through the support.
- the axis of rotation 36 is remote from the pivot axis 26 so that the axis of the drive wheel follows a circular arc when the support pivots.
- the intermediate wheel 10 is also mounted on the pivoting support 22 and its axis of rotation coincides with the pivot axis 26 of this support.
- the axis of rotation of this intermediate wheel remains fixed relative to the plate 24 when the support 22 pivots; which makes it possible to ensure the coupling to the rotor 9 of the motor regardless of the angular position of the support.
- the drive wheel Since the date ring partially passes over the drive wheel and the intermediate wheel, the drive wheel is held axially in position by the date ring and the intermediate wheel is held axially in position by a button 30 forming a stop.
- the central part of the drive wheel In order for this button to be below the date ring, the central part of the drive wheel has the shape of a truncated cone. This makes it possible to obtain a difference in level between the toothing of the drive wheel and the two pins of this drive wheel and thus to have a space for the button above the pinion of the intermediate wheel.
- the drive device further comprises a spring blade 40 which exerts a lateral force on the support 22 so that the two pins laterally press on the toothing 18 of the date ring towards the bottom of this toothing.
- the spring blade is in tension and bears against a lateral surface of the support 22 so as to exert a certain force torque on the latter.
- Other types of spring or other alternative elastic means for obtaining the torque of force necessary for the given function can be provided by the person skilled in the art.
- the teeth of the date ring have a profile with teeth 19 having recesses 20 between them, this profile being arranged to cooperate with the two pins or, where appropriate, the two rollers so that when both pins (provided or not with rolling rollers) are in a tangential orientation relative to the date ring, the drive wheel and the date ring meshing substantially without tangential play under the action of the spring blade 40.
- the recesses 20 are provided to allow to accommodate the pins 12 and 13 provided with their rollers with a very small tangential clearance when the two rollers press against the bottom of the toothing, that is to say here against the bottom recesses 20.
- the drive device jointly ensures the drive of the date ring and a precise positioning thereof in the display positions of the different dates.
- the drive device especially in the preferred embodiment with a drive wheel provided with two pins which are aligned with the axis of rotation of this drive wheel, the drive device further forms a high-performance anti-shock system. Indeed, during a shock producing a torque force on the date ring, the drive wheel exerts a reaction force that keeps the date ring in position.
- the drive wheel has more than two pins, in particular three or four pins, arranged equidistantly on a circle whose center of rotation is the axis of rotation. of this drive wheel.
- These pins can also be provided in a variant of rollers.
- the drive device is similar to the embodiment described using the Figures 1 to 3 .
- the Figures 4 and 5 are shown two variants of the combination of a profile of the tooth 18A of the date ring and two adjacent pins meshing with this toothing 18A.
- the teeth 19A of the toothing have non-parallel flanks each defining a monotonically increasing curve relative to the central axis 44 of the tooth corresponding in the direction of the bottom of this toothing.
- the distance L1 between the two pins 12A and 13A or, where appropriate, the distance L2 between the two respective rollers 14 and 15 is provided so as to have, in the display positions of the date ring, two points of contact between the two pins or, where appropriate, between the two respective rollers and respectively two flanks of a tooth ( Figure 4 ) or two teeth having an intermediate tooth between them ( Figure 5 ), without touching the bottom of the toothing.
- These variants are particularly advantageous because, in cooperation with the leaf spring 40, the arrangement of the toothing and the spacing between the pins are such that there is no more tangential clearance when the two pins have a tangential orientation, as represented on the Figures 4 and 5 . It will be noted that this characteristic is obtained despite usual manufacturing tolerances.
- the average angular aperture defined by the tooth flanks and the depth of the toothing are selected so that, throughout the tolerance range (ie the various accumulated tolerances), the pins or, where appropriate the rollers do not come into abutment at the bottom of the recesses 20A of the toothing.
- the watch movement comprises a control unit arranged to drive this electromagnetic motor, preferably in an accelerated mode when passing from a display position to a position of a motor. next display of the date ring.
- the transitional periods are short-lived; which limits the risk of shock when rotating the drive wheel.
- a moment of force exerted on the ring generates a moment of force on the drive wheel which has only one pin in the teeth.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electromechanical Clocks (AREA)
Description
La présente invention concerne le domaine des mouvements horlogers ayant un affichage analogique. En particulier, l'invention concerne un dispositif d'entraînement d'un indicateur analogique, en particulier d'un anneau des quantièmes.The present invention relates to the field of watch movements having an analog display. In particular, the invention relates to a drive device for an analog indicator, in particular a date ring.
Divers dispositifs d'entraînement d'un indicateur analogique sont connus de la personne du métier. Un problème connu des indicateurs analogiques vient du fait qu'ils sont entraînés par un dispositif d'entraînement comprenant généralement des éléments intermédiaires entre un moteur et l'indicateur analogique. Dans le cas où il est prévu des positions d'affichage distinctes et stationnaires pendant une certaine durée, étant donné les tolérances de fabrication et le jeu nécessaire entre les divers éléments du dispositif d'entraînement, le positionnement précis de l'indicateur n'est pas garanti sans des moyens de maintien en position.Various drive devices of an analog indicator are known to those skilled in the art. A known problem of analog indicators comes from the fact that they are driven by a drive device generally comprising intermediate elements between a motor and the analog indicator. In the case where separate and stationary display positions are provided for a certain period of time, given the manufacturing tolerances and the necessary clearance between the various elements of the driving device, the precise positioning of the indicator is not possible. not guaranteed without holding means in position.
Dans le cas des dispositifs d'affichage du quantième, le positionnement de l'indicateur dans les positions d'affichage distinctes est généralement assuré par un sautoir associé à la denture de l'anneau des quantièmes. Les systèmes d'entraînement classiques n'assurent pas un blocage suffisant de l'anneau des quantièmes en cas de choc. C'est donc le sautoir qui doit assurer cette fonction de blocage ; c'est pourquoi il présente une constante élastique élevée. Ainsi, pour vaincre la force élastique du sautoir, il est nécessaire de fournir un couple élevé au niveau de l'anneau des quantièmes ; ce qui est un problème vu généralement la grande réduction entre le moteur et l'anneau des quantièmes.In the case of date display devices, the positioning of the indicator in the distinct display positions is generally provided by a jumper associated with the teeth of the date ring. Conventional drive systems do not provide sufficient blocking of the date ring in case of impact. It is therefore the jumper that must provide this blocking function; this is why it has a high elastic constant. Thus, to overcome the elastic force of the jumper, it is necessary to provide a high torque at the date ring ring; which is a problem generally seen the big reduction between the engine and the ring of the dates.
La demande de brevet
La présente invention a pour but de fournir un dispositif d'entraînement d'un indicateur analogique, notamment d'un anneau des quantièmes, qui permette d'assurer un positionnement précis de l'indicateur sans nécessiter de sautoir de positionnement. Un autre but de l'invention est de fournir un tel dispositif d'entraînement qui puisse résister en cas de chocs.The object of the present invention is to provide a device for driving an analog indicator, in particular a date ring, which makes it possible to ensure precise positioning of the indicator without requiring a positioning jumper. Another object of the invention is to provide such a drive device that can withstand shocks.
A cet effet, la présente invention a pour objet un mouvement horloger équipé d'un indicateur analogique d'une pluralité de données distinctes qui est agencé à cet effet pour être maintenu stationnaire au moins temporairement dans une quelconque position d'une pluralité de positions d'affichage distinctes, cet indicateur analogique ayant une denture couplée mécaniquement à un dispositif d'entraînement. Ce dernier comprend un moteur, un mobile d'entraînement muni de moyens d'engrènement avec la denture et un support sur lequel est monté le mobile d'entraînement. Le support du mobile d'entraînement est monté sur une base de manière à pouvoir pivoter autour d'un premier axe et le mobile d'entraînement est monté tournant sur ce support autour d'un deuxième axe distant du premier axe. Le dispositif d'entraînement comprend en outre un moyen élastique exerçant une force latérale sur le support de manière que les moyens d'engrènement du mobile d'entraînement pressent contre la denture de l'indicateur analogique, ces moyens d'engrènement et la denture présentant des profils respectifs sélectionnés de manière que, au moins dans ladite pluralité de positions d'affichage distinctes de l'indicateur analogique, le mobile d'entraînement et l'indicateur analogique s'engrènent sensiblement sans jeu tangentiel sous l'action du moyen élastique.For this purpose, the subject of the present invention is a watch movement equipped with an analogue indicator of a plurality of distinct data which is arranged for this purpose to be kept stationary at least temporarily in any position of a plurality of positions of display, this analog indicator having a toothing mechanically coupled to a drive device. The latter includes a motor, a driving mobile provided with meshing means with the toothing and a support on which is mounted the drive wheel. The support of the drive wheel is mounted on a base so as to be pivotable about a first axis and the drive wheel is rotatably mounted on the support about a second axis remote from the first axis. The driving device further comprises an elastic means exerting a lateral force on the support so that the meshing means of the drive wheel press against the toothing of the analog indicator, these meshing means and the toothing presenting respective profiles selected so that, at least in said plurality of distinct display positions of the analog indicator, the drive wheel and the analog indicator meshing substantially without tangential clearance under the action of the elastic means.
Le moyen élastique est, dans une variante, formé par une lame ressort qui presse latéralement contre le support du mobile d'entraînement.The elastic means is, in a variant, formed by a spring blade which presses laterally against the support of the drive wheel.
D'autres caractéristiques particulières de l'invention seront exposées ci-après dans la description détaillée de l'invention.Other particular features of the invention will be described below in the detailed description of the invention.
L'invention sera décrite ci-après à l'aide de dessins annexés, donnés à titre d'exemples nullement limitatifs, dans lesquels :
- La
Figure 1 montre un mode de réalisation d'un mouvement horloger selon l'invention et plus précisément son dispositif d'entraînement d'un anneau de quantième; - La
Figure 2 montre certains éléments du dispositif d'entraînement de laFigure 1 ; - La
Figure 3 est une vue de dessus d'une variante du mobile d'entraînement l'anneau des quantièmes du premier mode de réalisation; - La
Figure 4 représente une première variante avantageuse de l'engrènement entre la denture du disque des quantièmes et le mobile d'entraînement dans une position d'affichage d'un quantième; - La
Figure 5 représente une deuxième variante avantageuse de l'engrènement entre la denture du disque des quantièmes et le mobile d'entraînement dans une position d'affichage d'un quantième.
- The
Figure 1 shows an embodiment of a watch movement according to the invention and more specifically its device for driving a date ring; - The
Figure 2 shows some elements of the training device of theFigure 1 ; - The
Figure 3 is a top view of a variant of the drive wheel of the date ring of the first embodiment; - The
Figure 4 represents a first advantageous variant of the engagement between the toothing of the date disk and the drive wheel in a display position of a date; - The
Figure 5 represents a second advantageous variant of the meshing between the teeth of the date disk and the drive wheel in a display position of a date.
A l'aide des
La roue d'entraînement 8 ou 8A est munie de seulement deux goupilles qui s'élèvent de la partie centrale de cette roue et qui sont alignées avec l'axe de rotation de cette roue d'entraînement et diamétralement opposées. Ces deux goupilles forment des moyens d'engrènement de la roue d'entraînement avec la denture intérieure 18 de l'anneau des quantièmes. Dans la variante de la
La roue d'entraînement 8 ou 8A est montée sur un support 22 qui présente un pivot fixe 34 agencé sur une embase 32 de plus grand diamètre, cette embase définissant une butée sur laquelle repose la roue d'entraînement. Le pivot fixe définit l'axe de rotation 36 de cette roue d'entraînement qui présente un trou central 38 dans lequel est introduit ce pivot fixe. Selon l'invention, le support est monté sur une platine 24 et pivote autour d'un axe de pivotement 26 qui est défini par un arbre 28 traversant ce support. L'axe de rotation 36 est distant de l'axe de pivotement 26 de sorte que l'axe de la roue d'entraînement suit un arc de cercle lorsque le support pivote. La roue intermédiaire 10 est également montée sur le support pivotant 22 et son axe de rotation est confondu avec l'axe de pivotement 26 de ce support. Ainsi, l'axe de rotation de cette roue intermédiaire reste fixe relativement à la platine 24 lorsque le support 22 pivote ; ce qui permet d'assurer le couplage au rotor 9 du moteur quelle que soit la position angulaire du support.The
Etant donné que l'anneau des quantièmes passe partiellement au-dessus de la roue d'entraînement et de la roue intermédiaire, la roue d'entraînement est maintenue axialement en position par l'anneau des quantièmes et la roue intermédiaire est maintenue axialement en position par un bouton 30 formant butée. Pour que ce bouton puisse être en-dessous de l'anneau des quantièmes, la partie centrale de la roue d'entraînement a la forme d'un cône tronqué. Ceci permet d'obtenir une différence de niveau entre la denture de la roue d'entraînement et les deux goupilles de cette roue d'entraînement et d'avoir ainsi un espace pour le bouton au-dessus du pignon de la roue intermédiaire.Since the date ring partially passes over the drive wheel and the intermediate wheel, the drive wheel is held axially in position by the date ring and the intermediate wheel is held axially in position by a
Le dispositif d'entraînement comprend en plus une lame ressort 40 qui exerce une force latérale sur le support 22 de manière que les deux goupilles pressent latéralement sur la denture 18 de l'anneau des quantièmes en direction du fond de cette denture. La lame ressort est en tension et s'appuie contre une surface latérale du support 22 de manière à exercer un certain couple de force sur ce dernier. D'autres types de ressort ou d'autres moyens élastiques alternatifs permettant d'obtenir le couple de force nécessaire à la fonction donnée peuvent être prévus par la personne du métier. La denture de l'anneau des quantièmes présente un profil avec des dents 19 présentant entre elles des évidements 20, ce profil étant agencé pour coopérer avec les deux goupilles ou, le cas échéant, les deux galets de roulement de manière que, lorsque les deux goupilles (munies ou non de galets de roulement) sont dans une orientation tangentielle relativement à l'anneau des quantièmes, la roue d'entraînement et l'anneau des quantièmes s'engrènent sensiblement sans jeu tangentiel sous l'action de la lame-ressort 40. A la
Il est prévu que les positions d'affichage distinctes de l'indicateur analogique, ici les positions de l'anneau des quantièmes correspondant à l'affichage des différentes dates dans un guichet d'un cadran destiné au mouvement d'horlogerie selon l'invention, correspondent à une orientation tangentielle des deux goupilles de la roue d'entraînement. Ainsi, le dispositif d'entraînement selon l'invention assure conjointement l'entraînement de l'anneau des quantièmes et un positionnement précis de celui-ci dans les positions d'affichage des différentes dates. De plus, spécialement dans le mode de réalisation préféré avec une roue d'entraînement munie de deux goupilles qui sont alignées avec l'axe de rotation de cette roue d'entraînement, le dispositif d'entraînement forme en outre un système antichoc très performant. En effet, lors d'un choc produisant un couple de force sur l'anneau des quantièmes, la roue d'entraînement exerce une force de réaction qui maintient l'anneau des quantièmes en position.It is expected that the display positions distinct from the analog indicator, here the positions of the date ring corresponding to the display of different dates in a window of a dial for the watch movement according to the invention , correspond to a tangential orientation of the two pins of the drive wheel. Thus, the drive device according to the invention jointly ensures the drive of the date ring and a precise positioning thereof in the display positions of the different dates. In addition, especially in the preferred embodiment with a drive wheel provided with two pins which are aligned with the axis of rotation of this drive wheel, the drive device further forms a high-performance anti-shock system. Indeed, during a shock producing a torque force on the date ring, the drive wheel exerts a reaction force that keeps the date ring in position.
On remarquera que dans un autre mode de réalisation moins performant pour ce qui concerne la fonction antichoc, la roue d'entraînement a plus de deux goupilles, notamment trois ou quatre, agencées de manière équidistantes sur un cercle ayant pour centre l'axe de rotation de cette roue d'entraînement. Ces goupilles peuvent aussi être munies dans une variante de galets de roulement. Hormis cette différence, et donc le fait que l'avance de l'anneau des quantièmes d'une distance angulaire correspondant à une dent est obtenu par une moindre rotation de la roue d'entraînement que dans le cas décrit précédemment avec deux goupilles, le dispositif d'entraînement est similaire au mode de réalisation décrit à l'aide des
Aux
Finalement, dans un mode de réalisation dans lequel le moteur est un moteur électromagnétique, le mouvement horloger comprend une unité de commande agencée pour entraîner ce moteur électromagnétique de préférence dans un mode accéléré lors du passage d'une position d'affichage à une position d'affichage suivante de l'anneau des quantièmes. Ainsi, les périodes transitoires sont de courte durée ; ce qui limite le risque d'un choc lors de la rotation de la roue d'entraînement. En effet, lorsque les deux goupilles sont notamment dans une position sensiblement radiale relativement à l'anneau des quantièmes, un moment de force exercé sur l'anneau engendre un moment de force sur la roue d'entraînement qui n'a plus qu'une goupille dans la denture.Finally, in one embodiment in which the motor is an electromagnetic motor, the watch movement comprises a control unit arranged to drive this electromagnetic motor, preferably in an accelerated mode when passing from a display position to a position of a motor. next display of the date ring. Thus, the transitional periods are short-lived; which limits the risk of shock when rotating the drive wheel. Indeed, when the two pins are in particular a substantially radial position relative to the date ring, a moment of force exerted on the ring generates a moment of force on the drive wheel which has only one pin in the teeth.
Claims (13)
- Timepiece movement fitted with an analogue indicator (6) of a plurality of distinct data which is arranged for this purpose to be held stationary at least temporarily in any one position of a plurality of distinct display positions, said analogue indicator having a toothing (18, 18A) mechanically coupled to a drive device (4) including a motor and a drive wheel and pinion (8, 8A) provided with means (12, 13, 12A, 13A, 14, 15) of meshing with the toothing, said drive device further including a support (22) on which the drive wheel and pinion is mounted, this support being mounted on a base (24) in order to pivot about a first axis (26) and said drive wheel and pinion being rotatably mounted on said support about a second axis (36) distinct from the first axis, the drive device further including an elastic means (40) applying a lateral force to said support so that said meshing means of the drive wheel and pinion laterally press against the analogue indicator toothing towards the bottom of this toothing, said meshing means and the toothing having respective profiles selected such that, at least in said plurality of distinct display positions of the analogue indicator, the drive wheel and pinion and the analogue indicator mesh with each other with substantially no tangential play under the action of said elastic means.
- Timepiece movement according to claim 1, characterized in that the drive device further includes an intermediate wheel (10) which is arranged between the motor and the drive wheel and pinion and which meshes with said drive wheel and pinion, said intermediate wheel being mounted on said pivoting support (22) and having an axis of rotation that merges with said first pivot axis (26) of said support.
- Timepiece movement according to claim 1 or 2, characterized in that said analogue indicator is a date ring and said toothing is an inner toothing of said date ring.
- Timepiece movement according to any of the preceding claims, characterized in that said meshing means are formed by at least three pins which rise from the drive wheel and pinion.
- Timepiece movement according to claim 4, characterized in that the pins are each provided with a roller bearing.
- Timepiece movement according to claim 4 or 5, characterized in that the teeth (19A) of said toothing have non parallel flanks each defining a monotonically increasing curve relative to the central axis (44) of the corresponding tooth towards the bottom of said toothing; and in that the distance (L1) between two adjacent pins, where appropriate between two respective roller bearings, is arranged, in said plurality of distinct display positions of the analogue indicator, to have two points of contact between the two adjacent pins or, where appropriate, between the two respective roller bearings and respectively two flanks of a tooth, without touching the bottom of the toothing.
- Timepiece movement according to claim 4 or 5, characterized in that the teeth (19A) of said toothing have non parallel flanks each defining a monotonically increasing curve relative to the central axis (44) of the corresponding tooth towards the bottom of said toothing; and in that the distance (L2) between two adjacent pins, where appropriate between two respective roller bearings, is arranged, in said plurality of distinct display positions of the analogue indicator, to have two points of contact between the two adjacent pins or, where appropriate, between the two respective roller bearings and respectively two flanks of two teeth, having between them an intermediate tooth, without touching the bottom of the toothing.
- Timepiece movement according to claim 1 or 2, characterized in that said meshing means are formed by only two pins (12, 13, 12A, 13A) which rise from said drive wheel and pinion, said two pins being aligned with the axis of rotation of said drive wheel and pinion and diametrically opposite.
- Timepiece movement according to claim 8, characterized in that the two pins are each provided with a roller bearing (14, 15).
- Timepiece movement according to claim 8 or 9, characterized in that the teeth (19A) of said toothing have non parallel flanks each defining a monotonically increasing curve relative to the central axis (44) of the corresponding tooth towards the bottom of said toothing; and in that the distance (L1) between the two pins, where appropriate between the two respective roller bearings, is arranged, in said plurality of distinct display positions of the analogue indicator, to have two points of contact between the two pins or, where appropriate, between the two respective roller bearings and respectively two flanks of a tooth, without touching the bottom of the toothing.
- Timepiece movement according to claim 8 or 9, characterized in that the teeth (19A) of said toothing have non parallel flanks each defining a monotonically increasing curve relative to the central axis (44) of the corresponding tooth towards the bottom of said toothing; and in that the distance (L2) between the two pins, where appropriate between the two respective roller bearings, is arranged, in said plurality of distinct display positions of the analogue indicator, to have two points of contact between the two pins or, where appropriate, between the two respective roller bearings and respectively two respective flanks of two teeth, having between them an intermediate tooth, without touching the bottom of the toothing.
- Timepiece movement according to any of the preceding claims, characterized in that said motor is an electromagnetic motor, and in that said timepiece movement includes a control unit arranged to drive said electromagnetic motor in an accelerated mode during the change from one distinct display position to a following distinct display position.
- Timepiece movement according to any of the preceding claims, characterized in that said elastic means applying a lateral force to said support is formed by a strip spring (40).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP15156373.1A EP2919077B1 (en) | 2014-03-10 | 2015-02-24 | Device for driving an analogue indicator, in particular a date ring |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14158625.5A EP2919076A1 (en) | 2014-03-10 | 2014-03-10 | Device for driving an analogue indicator, in particular a date ring |
EP15156373.1A EP2919077B1 (en) | 2014-03-10 | 2015-02-24 | Device for driving an analogue indicator, in particular a date ring |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2919077A2 EP2919077A2 (en) | 2015-09-16 |
EP2919077A3 EP2919077A3 (en) | 2016-05-25 |
EP2919077B1 true EP2919077B1 (en) | 2019-08-07 |
Family
ID=50238257
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14158625.5A Withdrawn EP2919076A1 (en) | 2014-03-10 | 2014-03-10 | Device for driving an analogue indicator, in particular a date ring |
EP15156373.1A Active EP2919077B1 (en) | 2014-03-10 | 2015-02-24 | Device for driving an analogue indicator, in particular a date ring |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14158625.5A Withdrawn EP2919076A1 (en) | 2014-03-10 | 2014-03-10 | Device for driving an analogue indicator, in particular a date ring |
Country Status (5)
Country | Link |
---|---|
US (1) | US9411311B2 (en) |
EP (2) | EP2919076A1 (en) |
JP (1) | JP5947937B2 (en) |
CN (1) | CN104914703B (en) |
HK (1) | HK1215077A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3193217A1 (en) * | 2016-01-18 | 2017-07-19 | ETA SA Manufacture Horlogère Suisse | Timepiece movement comprising an analog display |
EP3627239B1 (en) * | 2016-07-05 | 2024-04-17 | Montres Breguet S.A. | Roller display mechanism for a watch |
CN108459489B (en) * | 2017-02-17 | 2021-06-15 | 精工电子有限公司 | Mechanism module, movement, and timepiece |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS487095Y1 (en) * | 1969-10-01 | 1973-02-23 | ||
CH538136A (en) * | 1971-02-05 | 1973-07-31 | Suisse Horlogerie | Date mechanism for timepiece |
US3738097A (en) * | 1971-07-12 | 1973-06-12 | Omega Brandt & Freres Sa Louis | Mechanism for driving and correcting a data disc in a day-date timepiece |
CH560411A (en) * | 1971-07-12 | 1975-03-27 | ||
CH494772A4 (en) * | 1972-04-05 | 1975-09-15 | ||
US4050233A (en) * | 1975-09-27 | 1977-09-27 | Pforzheimer Uhren-Rohwerke Rudolf Wehner | Stepping mechanism for watches |
CH610482B (en) * | 1976-06-16 | Schild Sa A | WATCH-CALENDAR MOVEMENT. | |
JPS6059550B2 (en) * | 1977-06-03 | 1985-12-25 | シチズン時計株式会社 | calendar clock |
JPS5474465A (en) * | 1977-11-26 | 1979-06-14 | Citizen Watch Co Ltd | Month correcting mechanism for calendar watch |
JPS60173491A (en) * | 1985-01-21 | 1985-09-06 | Citizen Watch Co Ltd | Electronic timepiece with month-end noncorrecting mechanism |
CH669082GA3 (en) | 1987-05-25 | 1989-02-28 | ||
CH678908B5 (en) * | 1990-04-04 | 1992-05-29 | Rolex Montres | |
CH682285B5 (en) * | 1991-12-20 | 1994-02-28 | Ebauchesfabrik Eta Ag | Timepiece of the mechanical or electromechanical type comprising a drive wheel driving at least a display device such as a display of dates. |
-
2014
- 2014-03-10 EP EP14158625.5A patent/EP2919076A1/en not_active Withdrawn
-
2015
- 2015-02-24 EP EP15156373.1A patent/EP2919077B1/en active Active
- 2015-03-04 US US14/637,836 patent/US9411311B2/en active Active
- 2015-03-06 JP JP2015044600A patent/JP5947937B2/en active Active
- 2015-03-09 CN CN201510101356.9A patent/CN104914703B/en active Active
-
2016
- 2016-03-14 HK HK16102915.0A patent/HK1215077A1/en unknown
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
JP5947937B2 (en) | 2016-07-06 |
US9411311B2 (en) | 2016-08-09 |
JP2015169660A (en) | 2015-09-28 |
EP2919077A3 (en) | 2016-05-25 |
CN104914703A (en) | 2015-09-16 |
HK1215077A1 (en) | 2016-08-12 |
EP2919076A1 (en) | 2015-09-16 |
CN104914703B (en) | 2017-06-09 |
EP2919077A2 (en) | 2015-09-16 |
US20150253732A1 (en) | 2015-09-10 |
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