EP1962152B1 - Security device for display - Google Patents

Security device for display Download PDF

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Publication number
EP1962152B1
EP1962152B1 EP20070103010 EP07103010A EP1962152B1 EP 1962152 B1 EP1962152 B1 EP 1962152B1 EP 20070103010 EP20070103010 EP 20070103010 EP 07103010 A EP07103010 A EP 07103010A EP 1962152 B1 EP1962152 B1 EP 1962152B1
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EP
European Patent Office
Prior art keywords
finger
driven wheel
wheel
driven
jumper
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.)
Not-in-force
Application number
EP20070103010
Other languages
German (de)
French (fr)
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EP1962152A1 (en
Inventor
Yves Corthesy
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.)
Zenith International SA
Original Assignee
Zenith International SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Zenith International SA filed Critical Zenith International SA
Priority to EP20070103010 priority Critical patent/EP1962152B1/en
Priority to DE200760002469 priority patent/DE602007002469D1/en
Publication of EP1962152A1 publication Critical patent/EP1962152A1/en
Application granted granted Critical
Publication of EP1962152B1 publication Critical patent/EP1962152B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • G04B11/00—Click devices; Stop clicks; Clutches
    • 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
    • G04B19/00—Indicating the time by visual means
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped

Definitions

  • the present invention relates to the field of mechanical watchmaking and relates, more particularly, to a security device for a display.
  • the invention finds a particularly interesting application in disc displays, but can also be used for a display implementing a relatively heavy needle, having a large unbalance and inertia.
  • the mechanism comprises means for positioning the driven wheel, capable of changing between a first position in which they hold the driven wheel, and a second position in which they leave free the rotation of the driven wheel.
  • the document EP 1070996 proposes a display device as described above and in the preamble of claim 1.
  • This spring acts at the level of the driven wheel and stabilizes the disc in a determined position, in which one of the inscriptions it carries is centered with respect to the window.
  • the positioning of the disks is particularly important for the quality of the display of the room. It is indeed not tolerable that the indication is badly arranged in the window.
  • the disk displays are often jumping, that is to say that the drive mechanism of the disk has a spring system that accumulates some energy and that restores it at a given moment to make pass the disc instantly from a first position at a consecutive position.
  • the disc advances by a step of 30 ° (for a display type 12 hours) at the end of the fifty-ninth minute of each hour.
  • the amount of energy transmitted by the driving wheel to perform this type of training is relatively large and it can sometimes happen that the disk, under the effect of its inertia, performs a double jump. This occurs in particular when the penetration of the teeth of the driving wheel and the driven wheel is relatively low, due to dimensional constraints specific to the movement.
  • the tens can be displayed by a central disk and the drives by means of a disk appearing as a ring concentric to the tens disk.
  • the amount of energy required for each jump is not always equal depending on whether a single disc or two discs are to be driven.
  • the energy supplied can sometimes be excessive when only one of the disks has to advance, which can also cause a double jump.
  • the purpose of the present invention is to provide a safety device to avoid these double-jumps.
  • the invention concerns a mechanism for displaying information
  • a security device comprising a locking member moving between two stable positions, a first one in which it maintains the means of positioning in their first position, and a second in which it leaves free positioning means.
  • the locking member passes from its first to its second position under the action of the driven wheel and its second to its first position under the effect of a return system.
  • the safety device comprises a rocker cooperating, on the one hand, with the driving wheel and, on the other hand, with the locking member to bring it its first to its second position under the action of the driving wheel, by constraining the system of recall.
  • the locking member is a finger cooperating with the positioning means.
  • the positioning means are a jumper.
  • the jumper has a notch with which cooperates the finger.
  • the notch and the finger are arranged so that, when the finger is in its first position, it exerts on the notch a force preventing the displacement of the jumper engendered by the rotation of the driven wheel.
  • the finger can be a spring blade and is also the return system.
  • the energy supplied by the movement is transmitted to the display by a drive wheel 10 comprising 31 regularly distributed teeth and commonly called the wheel of 31.
  • This wheel takes a step through day, around midnight.
  • the step can be jumping, by a drive system 11 of conventional type.
  • the wheel 10 is positioned by a jumper 12. It is integral in rotation with a first lower wheel 14, a second intermediate wheel 16 and a third upper wheel 18, mounted coaxial with the wheel 10.
  • the wheels 14, 16 and 18 are cut on the number 31, but some of their teeth are missing, as detailed below.
  • the wheels 14, 16 and 18 cooperate respectively with a lower gear 20, an intermediate gear 22 and an upper gear 24, visible on the figure 2 .
  • These gears are mounted coaxially on a shaft 25 and are each positioned by a jumper.
  • the pinion 20 has a barrel 20a ending at a first level.
  • the pinion 22 is superimposed on the pinion 20 and also comprises a barrel 22a disposed outside the barrel 20a and ending at a second level, lower than the first level.
  • the pinion 24 is superimposed on the pinion 22 and comprises a barrel 24a disposed outside the barrel 22a and ending at a third level, lower than the second level.
  • the pinions are each positioned by a jumper 27, constituting positioning means, capable of evolving between a first position in which they maintain the pinions, and a second position in which they leave their rotation free.
  • a first board 26, circular in the example shown, is attached to the end of the barrel 20a. It carries, regularly distributed around its perimeter, representations of digits 0, 1, 2, 3, intended to display the number of tens of the date.
  • a second board 28, of annular appearance in the example shown, is attached to the end of the barrel 22a. It is sized to fit around the board 26, i.e. the inside diameter of the ring is slightly larger than the diameter of the board 26. As the figure 4 , the profile of the board 28 can be determined so that it is located at the same level as the board 26. In the variant illustrated, the board is divided into eight sectors and the pinion 22 has 8 teeth. The board carries the representations of digits 0, 1, 2, 3 and 4 and three open or transparent sectors.
  • the ring has a constant inner diameter and a first portion of 5/8 th of a turn with a first outer diameter, the digits being regularly arranged on this portion, and a second portion of 3/8 th of a turn with a second reduced outer diameter, so as to define an opening of about 135 °.
  • a third plate 30, of annular appearance in the example shown, is fixed to the end of the barrel 24a and therefore takes place at a lower level with respect to the board 28.
  • the outer diameter of the board 30 is substantially equal to that of the board 28.
  • the board is divided into eight sectors and the pinion 24 has 8 teeth.
  • the plate carries the representations of digits 5, 6, 7, 8 and 9 and three passive sectors, that is to say without registration. These sectors can be open or not or include any registration, as will be understood below, they have no function in the display.
  • the profile of the board 30 is adjusted to that of the board 28 so that the two boards are as close as possible to one another, particularly at the areas bearing the digits.
  • a screw 32 cooperating with a thread formed inside the shaft 25 holds in position all the gears and boards.
  • the pinions 20, 22 and 24 comprise portions devoid of teeth and thus constitute counting means for displaying the correct date and kinematically connect sequentially the drive wheel and the first, second and third boards.
  • the wheels 14, 16 and 18 each form a driving wheel of the mechanism cooperating respectively with the pinions 20, 22 and 24 which each form a driven wheel.
  • the pinions 20, 22 and 24 are each provided with a locking member 36 for the purpose of preventing the boards 26, 28 and 30 to make a double-jump.
  • this locking member 36 takes the form of a finger 38 capable of changing between a first position in which it cooperates with a notch 40 disposed on the jumper 27 to block any movement of the latter, and a second position in which he leaves the jumper free to cooperate with its pinion.
  • the finger 38 and the notch 40 are arranged so that, when the finger is in its first position, it exerts on the notch a force preventing the jumper 27 from moving under the effect of the rotation of its pinion 20, 22 or 24. In this way, when the finger 38 is in its first position, any rotation of the pinion and thus of the board it carries is prevented.
  • the notch 40 is located as far as possible from the attachment of the jumper spring 27 to the plate.
  • the notch 40 can be either made directly in the jumper or by means of an insert.
  • the device also comprises a biasing system exerting a force which tends to hold the locking member 36 in its first position and ensures, as explained hereinafter, the return of this member to its first position after it has been moved to his second position.
  • the passage of the locking member from its first to its second position, allowing the release of the pinion 20, 22 or 24, is provided by means of a lever 42 fork-shaped.
  • the latch has a first branch 42a at which its pivot point is located and a second 42b and a third 42c branches, forming a Y.
  • the latch 42 cooperates, by its second branch 42b, with the driving wheel, in this case with one of the wheels 14, 16 and 18.
  • the latch cooperates with the finger 38 to bring it from its first to its second position, by constraining the return system.
  • the third branch 42c of the rocker may include a pin 44 acting on the return system. The latter also maintains the second branch of the rocker in support against the driving wheel.
  • the finger 38 takes the form of a leaf spring cooperating at one of its ends with the notch 40 of the jumper.
  • the locking member thus constitutes its own return system.
  • the three fingers constitute a single piece having the shape of a comb with three teeth, each tooth having the role of locking member and return system for one of the driven wheels.
  • an eccentric 46 can be mounted on the plate to adjust the spring force.
  • the display mechanism and the safety device are in the position shown in FIG. figure 3 .
  • the display boards are positioned so that one of the indications they carry is properly arranged in a display area.
  • the jumper 27 maintains its pinion in this position and the finger 38 cooperates with the notch 40 to lock it. This is so for each pinion.
  • the finger 38 is held in this position and the second leg 42b of the latch 42 is pressed against one of the driving wheels 14, 16 or 18.
  • each jumper spring 27 can then be lifted by its pinion which is rotated by its driven wheel.
  • Each jumper 27 cooperates with its pinion so that it ends his step. Simultaneously, the driving wheels also complete their pitch, under the effect of the jumper 12 of the drive wheel 10.
  • the latch 42 can cooperate simultaneously with several wheels leading to release the locking member at each step.
  • a device for preventing inadvertent rotation of the display boards they can turn only when they are actually rotated and automatically blocked at the end of the movement they must theoretically perform.
  • the proposed device can very simply be applied to any display disc or needle, including jumping type, regardless of the information displayed.
  • the locking member could be a rocker, possibly terminated by a pin with which cooperates a separate spring.
  • the safety device according to the invention can also be used with trailing or semi-trailing type drives, the position of the discs or needles then being secured relative to possible shocks that could cause them to rotate.

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  • General Physics & Mathematics (AREA)
  • Measurement Of Distances Traversed On The Ground (AREA)

Description

Domaine techniqueTechnical area

La présente invention se rapporte au domaine de l'horlogerie mécanique et concerne, plus particulièrement, un dispositif de sécurité pour un affichage. L'invention trouve une application particulièrement intéressante dans des affichages par disque, mais peut aussi être utilisée pour un affichage mettant en ceuvre une aiguille relativement lourde, présentant un balourd et une inertie importante.The present invention relates to the field of mechanical watchmaking and relates, more particularly, to a security device for a display. The invention finds a particularly interesting application in disc displays, but can also be used for a display implementing a relatively heavy needle, having a large unbalance and inertia.

Pour afficher une information, on peut notamment utiliser une aiguille ou un disque, portant les inscriptions pertinentes et tournant derrière un guichet au travers duquel l'information est lisible. Cette aiguille ou ce disque sont portés par une roue menée mobile en rotation. La roue menée est entraînée par une roue menante également mobile en rotation et elle-même entraînée par un mouvement de montre. Pour que le disque ou l'aiguille soient positionnés avec précision, le mécanisme comprend des moyens de positionnement de la roue menée, susceptibles d'évoluer entre une première position dans laquelle ils maintiennent la roue menée, et une deuxième position dans laquelle ils laissent libre la rotation de la roue menée.To display information, it is possible to use a needle or a disc, bearing the relevant inscriptions and turning behind a window through which the information is legible. This needle or disk is carried by a wheel driven in rotation. The driven wheel is driven by a driving wheel also movable in rotation and itself driven by a watch movement. In order for the disk or the needle to be accurately positioned, the mechanism comprises means for positioning the driven wheel, capable of changing between a first position in which they hold the driven wheel, and a second position in which they leave free the rotation of the driven wheel.

Etat de la techniqueState of the art

Le document EP 1070996 , par exemple, propose un dispositif d'affichage tel que décrit ci-dessus et dans le préambule de la revendication 1.The document EP 1070996 , for example, proposes a display device as described above and in the preamble of claim 1.

De manière conventionnelle, c'est un ressort sautoir qui est utilisé comme moyen de positionnement. Ce ressort agit au niveau de la roue menée et stabilise le disque dans une position déterminée, dans laquelle l'une des inscriptions qu'il porte est centrée par rapport au guichet.Conventionally, it is a jumper spring which is used as positioning means. This spring acts at the level of the driven wheel and stabilizes the disc in a determined position, in which one of the inscriptions it carries is centered with respect to the window.

Le positionnement des disques est particulièrement important pour la qualité de l'affichage de la pièce. Il n'est en effet pas tolérable que l'indication soit mal disposée dans le guichet.The positioning of the disks is particularly important for the quality of the display of the room. It is indeed not tolerable that the indication is badly arranged in the window.

Pour avoir un rendu agréable, les affichages par disque sont souvent de type sautant, c'est-à-dire que le mécanisme d'entraînement du disque comporte un système ressort qui accumule une certaine énergie et qui la restitue à un moment donné pour faire passer le disque de manière instantanée d'une première position à une position consécutive. A titre d'exemple, dans un affichage sautant de l'heure, le disque avance d'un pas de 30° (pour un affichage de type 12heures) à la fin de la cinquante-neuvième minute de chaque heure.For a nice rendering, the disk displays are often jumping, that is to say that the drive mechanism of the disk has a spring system that accumulates some energy and that restores it at a given moment to make pass the disc instantly from a first position at a consecutive position. For example, in a display jumping the time, the disc advances by a step of 30 ° (for a display type 12 hours) at the end of the fifty-ninth minute of each hour.

La quantité d'énergie transmise par la roue menante pour effectuer ce type d'entraînement est relativement importante et il peut arriver parfois, que le disque, sous l'effet de son inertie, effectue un double saut. Ceci se produit notamment lorsque la pénétration des dents de la roue menante et de la roue menée est relativement faible, du fait de contrainte dimensionnelles propres au mouvement.The amount of energy transmitted by the driving wheel to perform this type of training is relatively large and it can sometimes happen that the disk, under the effect of its inertia, performs a double jump. This occurs in particular when the penetration of the teeth of the driving wheel and the driven wheel is relatively low, due to dimensional constraints specific to the movement.

Dans des affichages à disque de type grande date, les dizaines peuvent être affichées par un disque centrale et les unités au moyen d'un disque apparaissant sous la forme d'un anneau concentrique au disque des dizaines. La quantité d'énergie nécessaire à chaque saut n'est pas toujours égale selon si un disque seulement ou deux disques doivent être entraînés. L'énergie fournie peut parfois être excessive lorsque seul un des disques doit avancer, ce qui peut aussi provoquer un double saut.In large date type disk displays, the tens can be displayed by a central disk and the drives by means of a disk appearing as a ring concentric to the tens disk. The amount of energy required for each jump is not always equal depending on whether a single disc or two discs are to be driven. The energy supplied can sometimes be excessive when only one of the disks has to advance, which can also cause a double jump.

Des inconvénients similaires peuvent se produire avec des affichages à aiguille mettant en ouvre des aiguilles relativement lourdes et présentant une inertie importante.Similar disadvantages can occur with needle displays employing relatively heavy needles with significant inertia.

Le but de la présente invention est de proposer un dispositif de sécurité permettant d'éviter ces double-sauts.The purpose of the present invention is to provide a safety device to avoid these double-jumps.

Divulgation de l'inventionDisclosure of the invention

De façon plus précise, l'invention, comme défini par les revendications, concerne un mécanisme d'affichage d'une information comportant un dispositif de sécurité comprenant un organe de verrouillage évoluant entre deux positions stables, une première dans laquelle il maintient les moyens de positionnement dans leur première position, et une deuxième dans laquelle il laisse libre les moyens de positionnement. L'organe de verrouillage passe de sa première à sa deuxième position sous l'action de la roue menée et de sa deuxième à sa première position sous l'effet d'un système de rappel.More specifically, the invention, as defined by the claims, concerns a mechanism for displaying information comprising a security device comprising a locking member moving between two stable positions, a first one in which it maintains the means of positioning in their first position, and a second in which it leaves free positioning means. The locking member passes from its first to its second position under the action of the driven wheel and its second to its first position under the effect of a return system.

Le dispositif de sécurité comporte une bascule coopérant, d'une part, avec la roue menante et, d'autre part, avec l'organe de verrouillage pour l'amener de sa première à sa deuxième position sous l'action de la roue menante, en contraignant le système de rappel.The safety device comprises a rocker cooperating, on the one hand, with the driving wheel and, on the other hand, with the locking member to bring it its first to its second position under the action of the driving wheel, by constraining the system of recall.

Avantageusement, l'organe de verrouillage est un doigt coopérant avec les moyens de positionnement.Advantageously, the locking member is a finger cooperating with the positioning means.

De préférence, les moyens de positionnement sont un sautoir. Le sautoir est doté d'un cran avec lequel coopère le doigt. Le cran et le doigt sont agencés de manière à ce que, lorsque le doigt est dans sa première position, il exerce sur le cran une force empêchant le déplacement du sautoir qu'engendre la rotation de la roue menée.Preferably, the positioning means are a jumper. The jumper has a notch with which cooperates the finger. The notch and the finger are arranged so that, when the finger is in its first position, it exerts on the notch a force preventing the displacement of the jumper engendered by the rotation of the driven wheel.

Le doigt peut être une lame ressort et constitue également le système de rappel.The finger can be a spring blade and is also the return system.

Brève description des dessinsBrief description of the drawings

D'autres détails apparaîtront plus clairement à la lecture de la description qui suit, faite en référence au dessin annexé dans lequel:

  • la figure 1 est une vue d'ensemble d'un exemple de mécanisme d'affichage par disques, dans lequel l'invention peut s'appliquer,
  • la figure 2 est une vue de dessous, c'est-à-dire côté fond du mouvement, du dispositif selon l'invention, et
  • les figures 3 et 4 sont des vues de dessus, c'est-à-dire côté cadran, du dispositif de sécurité selon l'invention, respectivement lorsque l'organe de verrouillage est dans sa première et dans sa deuxième position.
Other details will appear more clearly on reading the description which follows, made with reference to the appended drawing in which:
  • the figure 1 is an overview of an exemplary disk display mechanism, in which the invention is applicable,
  • the figure 2 is a view from below, that is to say the bottom side of the movement, of the device according to the invention, and
  • the figures 3 and 4 are views from above, that is to say the dial side, of the safety device according to the invention, respectively when the locking member is in its first and in its second position.

Mode(s) de réalisation de l'inventionMode (s) of realization of the invention

La description ci-après fournit un exemple non limitatif d'application de l'invention à un mécanisme d'affichage par disques qui fait lui-même l'objet d'une demande de brevet n° EP07103003 , au nom de la demanderesse. On pourra se référer à ce document pour trouver des détails sur le mécanisme d'affichage en tant que tel qui, ne faisant pas directement partie de l'invention, ne sera pas décrit complètement. L'homme du métier pourra sans difficulté, à la lecture de la présente, comprendre la manière dont le dispositif de sécurité selon l'invention peut être appliqué à tout mécanisme d'affichage, particulièrement de type sautant, par disque ou par une aiguille. Les différents éléments évoqués ci-après sont montés sur des ponts et platines du mouvement de base ou d'un module additionnel, non représentés pour clarifier les dessins.The following description provides a non-limiting example of application of the invention to a disk display mechanism which itself is the subject of a patent application no. EP07103003 , in the name of the plaintiff. Reference may be made to this document for details of the display mechanism as such which, not being directly part of the invention, will not be fully described. The person skilled in the art can without difficulty, on reading this, understand how the safety device according to the invention can be applied to any display mechanism, particularly of the jumping type, by disk or by a needle. The various elements mentioned below are mounted on decks and decks basic movement or additional module, not shown to clarify the drawings.

On retiendra que, dans le mécanisme donné en exemple, l'énergie fournie par le mouvement est transmise à l'affichage par une roue d'entraînement 10, comprenant 31 dents régulièrement réparties et couramment appelée roue de 31. Cette roue effectue un pas par jour, aux environs de minuit. Selon l'exemple, le pas peut se fait de manière sautante, par un système d'entraînement 11 de type conventionnel.It will be remembered that, in the mechanism given by way of example, the energy supplied by the movement is transmitted to the display by a drive wheel 10 comprising 31 regularly distributed teeth and commonly called the wheel of 31. This wheel takes a step through day, around midnight. According to the example, the step can be jumping, by a drive system 11 of conventional type.

La roue 10 est positionnée par un sautoir 12. Elle est solidaire en rotation avec une première roue inférieure 14, une deuxième roue intermédiaire 16 et un troisième roue supérieure 18, montées coaxiales à la roue 10. Les roues 14, 16 et 18 sont taillées sur le nombre 31, mais certaines de leurs dents manquent, comme détaillé ci-après.The wheel 10 is positioned by a jumper 12. It is integral in rotation with a first lower wheel 14, a second intermediate wheel 16 and a third upper wheel 18, mounted coaxial with the wheel 10. The wheels 14, 16 and 18 are cut on the number 31, but some of their teeth are missing, as detailed below.

Les roues 14, 16 et 18 coopèrent respectivement avec un pignon inférieur 20, un pignon intermédiaire 22 et un pignon supérieur 24, visibles sur la figure 2. Ces pignons sont montés coaxiaux sur un arbre 25 et sont chacun positionné par un sautoir. Plus particulièrement, le pignon 20 est doté d'un canon 20a se terminant à un premier niveau. Le pignon 22 est superposé au pignon 20 et comprend également un canon 22a disposé à l'extérieur du canon 20a et se terminant à un deuxième niveau, inférieur au premier niveau. Le pignon 24 est superposé au pignon 22 et comprend un canon 24a disposé à l'extérieur du canon 22a et se terminant à un troisième niveau, inférieur au deuxième niveau. Les pignons sont chacun positionnés par un sautoir 27, constituant des moyens de positionnement, susceptibles d'évoluer entre une première position dans laquelle ils maintiennent les pignons, et une deuxième position dans laquelle ils laissent libre leur rotation.The wheels 14, 16 and 18 cooperate respectively with a lower gear 20, an intermediate gear 22 and an upper gear 24, visible on the figure 2 . These gears are mounted coaxially on a shaft 25 and are each positioned by a jumper. More particularly, the pinion 20 has a barrel 20a ending at a first level. The pinion 22 is superimposed on the pinion 20 and also comprises a barrel 22a disposed outside the barrel 20a and ending at a second level, lower than the first level. The pinion 24 is superimposed on the pinion 22 and comprises a barrel 24a disposed outside the barrel 22a and ending at a third level, lower than the second level. The pinions are each positioned by a jumper 27, constituting positioning means, capable of evolving between a first position in which they maintain the pinions, and a second position in which they leave their rotation free.

Une première planche 26, circulaire dans l'exemple illustré, est fixée à l'extrémité du canon 20a. Elle porte, régulièrement réparties à son pourtour, des représentations des digits 0, 1, 2, 3, destinés à afficher le chiffre des dizaines du quantième.A first board 26, circular in the example shown, is attached to the end of the barrel 20a. It carries, regularly distributed around its perimeter, representations of digits 0, 1, 2, 3, intended to display the number of tens of the date.

Une deuxième planche 28, d'apparence annulaire dans l'exemple illustré, est fixée à l'extrémité du canon 22a. Elle est dimensionnée de manière à être ajustée autour de la planche 26, c'est-à-dire que le diamètre intérieur de l'anneau est légèrement supérieur au diamètre de la planche 26. Comme le montre la figure 4, le profil de la planche 28 peut être déterminé de manière à ce qu'elle soit située au même niveau que la planche 26. Dans la variante illustrée, la planche est divisée en huit secteurs et le pignon 22 comporte 8 dents. La planche porte les représentations des digits 0, 1, 2, 3 et 4 et trois secteurs ouverts ou transparents. Autrement dit, l'anneau présente un diamètre intérieur constant et une première portion de 5/8ème de tour avec un premier diamètre extérieur, les digits étant disposés régulièrement sur cette portion, et une deuxième portion de 3/8ème de tour avec un deuxième diamètre extérieur réduit, de manière à définir une ouverture d'environ 135°.A second board 28, of annular appearance in the example shown, is attached to the end of the barrel 22a. It is sized to fit around the board 26, i.e. the inside diameter of the ring is slightly larger than the diameter of the board 26. As the figure 4 , the profile of the board 28 can be determined so that it is located at the same level as the board 26. In the variant illustrated, the board is divided into eight sectors and the pinion 22 has 8 teeth. The board carries the representations of digits 0, 1, 2, 3 and 4 and three open or transparent sectors. In other words, the ring has a constant inner diameter and a first portion of 5/8 th of a turn with a first outer diameter, the digits being regularly arranged on this portion, and a second portion of 3/8 th of a turn with a second reduced outer diameter, so as to define an opening of about 135 °.

Une troisième planche 30, d'apparence annulaire dans l'exemple illustré, est fixée à l'extrémité du canon 24a et prend donc place à un niveau inférieur par rapport à la planche 28. Le diamètre extérieur de la planche 30 est sensiblement égal à celui de la planche 28. Dans la variante illustrée, la planche est divisée en huit secteurs et le pignon 24 comporte 8 dents. La planche porte les représentations des digits 5, 6, 7, 8 et 9 et trois secteurs passifs, c'est-à-dire sans inscription. Ces secteurs peuvent être ouverts ou non ou comporter n'importe quelle inscription, comme on le comprendra ci-après, ils n'ont pas de fonction dans l'affichage. Le profil de la planche 30 est ajusté à celui de la planche 28 de sorte que les deux planches soient le plus proche possible l'une de l'autre, particulièrement au niveau des zones portant les digits.A third plate 30, of annular appearance in the example shown, is fixed to the end of the barrel 24a and therefore takes place at a lower level with respect to the board 28. The outer diameter of the board 30 is substantially equal to that of the board 28. In the variant illustrated, the board is divided into eight sectors and the pinion 24 has 8 teeth. The plate carries the representations of digits 5, 6, 7, 8 and 9 and three passive sectors, that is to say without registration. These sectors can be open or not or include any registration, as will be understood below, they have no function in the display. The profile of the board 30 is adjusted to that of the board 28 so that the two boards are as close as possible to one another, particularly at the areas bearing the digits.

Une vis 32 coopérant avec un filetage ménagé à l'intérieur de l'arbre 25 maintient en position l'ensemble des pignons et des planches.A screw 32 cooperating with a thread formed inside the shaft 25 holds in position all the gears and boards.

Comme mentionné ci-dessus, les pignons 20, 22 et 24 comportent des portions dépourvues de dents et constituent ainsi des moyens de comptage, permettant d'afficher le quantième correct et de relier cinématiquement de manière séquentielle la roue d'entraînement et les première, deuxième et troisième planches d'affichage.As mentioned above, the pinions 20, 22 and 24 comprise portions devoid of teeth and thus constitute counting means for displaying the correct date and kinematically connect sequentially the drive wheel and the first, second and third boards.

Les roues 14, 16 et 18 forment chacune une roue menante du mécanisme coopérant respectivement avec les pignons 20, 22 et 24 qui forment chacun une roue menée.The wheels 14, 16 and 18 each form a driving wheel of the mechanism cooperating respectively with the pinions 20, 22 and 24 which each form a driven wheel.

Particulièrement à l'invention, les pignons 20, 22 et 24 sont chacun dotés d'un organe de verrouillage 36 ayant pour but d'empêcher que les planches 26, 28 et 30 fassent un double-saut.Particularly to the invention, the pinions 20, 22 and 24 are each provided with a locking member 36 for the purpose of preventing the boards 26, 28 and 30 to make a double-jump.

Selon un mode de réalisation préféré, cet organe de verrouillage 36 prend la forme d'un doigt 38 susceptible d'évoluer entre une première position dans laquelle il coopère avec un cran 40 disposé sur le sautoir 27 pour bloquer tout mouvement de ce dernier, et une deuxième position dans laquelle il laisse le sautoir libre de coopérer avec son pignon.According to a preferred embodiment, this locking member 36 takes the form of a finger 38 capable of changing between a first position in which it cooperates with a notch 40 disposed on the jumper 27 to block any movement of the latter, and a second position in which he leaves the jumper free to cooperate with its pinion.

Le doigt 38 et le cran 40 sont agencés de manière à ce que, lorsque le doigt est dans sa première position, il exerce sur le cran une force empêchant le sautoir 27 de se déplacer sous l'effet de la rotation de son pignon 20, 22 ou 24. De la sorte, lorsque le doigt 38 est dans sa première position, toute rotation du pignon et donc de la planche qu'il porte est empêchée. De préférence, le cran 40 est situé le plus loin possible de la fixation du ressort sautoir 27 à la platine. Le cran 40 peut être soit réalisé directement dans le sautoir ou au moyen d'une pièce rapportée.The finger 38 and the notch 40 are arranged so that, when the finger is in its first position, it exerts on the notch a force preventing the jumper 27 from moving under the effect of the rotation of its pinion 20, 22 or 24. In this way, when the finger 38 is in its first position, any rotation of the pinion and thus of the board it carries is prevented. Preferably, the notch 40 is located as far as possible from the attachment of the jumper spring 27 to the plate. The notch 40 can be either made directly in the jumper or by means of an insert.

Le dispositif comprend également un système de rappel exerçant une force qui tend à maintenir l'organe de verrouillage 36 dans sa première position et assure, comme expliqué ci-après, le retour de cet organe à sa première position après qu'il soit passé à sa deuxième position.The device also comprises a biasing system exerting a force which tends to hold the locking member 36 in its first position and ensures, as explained hereinafter, the return of this member to its first position after it has been moved to his second position.

Le passage de l'organe de verrouillage de sa première à sa deuxième position, permettant la libération du pignon 20, 22 ou 24, est assuré par l'intermédiaire d'une bascule 42 en forme de fourche. Plus précisément, la bascule présente une première branche 42a au niveau de laquelle se situe son point de pivotement et une deuxième 42b et une troisième 42c branches, formant un Y. La bascule 42 coopère, par sa deuxième branche 42b, avec la roue menante, en l'occurrence avec l'une des roues 14, 16 et 18. Par sa troisième branche 42c, la bascule coopère avec le doigt 38 pour l'amener de sa première à sa deuxième position, en contraignant le système de rappel. Par exemple, la troisième branche 42c de la bascule peut comporter une goupille 44 agissant sur le système de rappel. Ce dernier maintient également la deuxième branche de la bascule en appui contre la roue menante.The passage of the locking member from its first to its second position, allowing the release of the pinion 20, 22 or 24, is provided by means of a lever 42 fork-shaped. More specifically, the latch has a first branch 42a at which its pivot point is located and a second 42b and a third 42c branches, forming a Y. The latch 42 cooperates, by its second branch 42b, with the driving wheel, in this case with one of the wheels 14, 16 and 18. By its third branch 42c, the latch cooperates with the finger 38 to bring it from its first to its second position, by constraining the return system. For example, the third branch 42c of the rocker may include a pin 44 acting on the return system. The latter also maintains the second branch of the rocker in support against the driving wheel.

Selon le mode de réalisation préféré illustré au dessin, le doigt 38 prend la forme d'un ressort lame coopérant par l'une de ses extrémités avec le cran 40 du sautoir. L'organe de verrouillage constitue ainsi son propre système de rappel. Avantageusement, dans l'exemple illustré, les trois doigts constituent une pièce unique ayant la forme d'un peigne à trois dents, chaque dent ayant le rôle d'organe de verrouillage et de système de rappel pour l'une des roues menées. Avantageusement, un excentrique 46 peut être monté sur la platine pour régler la force du ressort.According to the preferred embodiment illustrated in the drawing, the finger 38 takes the form of a leaf spring cooperating at one of its ends with the notch 40 of the jumper. The locking member thus constitutes its own return system. Advantageously, in the illustrated example, the three fingers constitute a single piece having the shape of a comb with three teeth, each tooth having the role of locking member and return system for one of the driven wheels. Advantageously, an eccentric 46 can be mounted on the plate to adjust the spring force.

Ainsi, en position de repos, c'est-à-dire lorsque les roues menantes 14, 16 ou 18 sont fixes, le mécanisme d'affichage et le dispositif de sécurité sont dans la position représentée à la figure 3. Plus précisément, les planches d'affichage sont positionnées de manière à ce que l'une des indications qu'elles portent soit correctement disposée dans une zone d'affichage. Le sautoir 27 maintient son pignon dans cette position et le doigt 38 coopère avec le cran 40 afin de le verrouiller. Il en est ainsi pour chaque pignon. Sous l'action du système de rappel, le doigt 38 est maintenu dans cette position et la deuxième branche 42b de la bascule 42 est appuyée contre l'une des roues menantes 14, 16 ou 18.Thus, in the rest position, that is to say when the driving wheels 14, 16 or 18 are fixed, the display mechanism and the safety device are in the position shown in FIG. figure 3 . Specifically, the display boards are positioned so that one of the indications they carry is properly arranged in a display area. The jumper 27 maintains its pinion in this position and the finger 38 cooperates with the notch 40 to lock it. This is so for each pinion. Under the action of the return system, the finger 38 is held in this position and the second leg 42b of the latch 42 is pressed against one of the driving wheels 14, 16 or 18.

Lorsque les roues menantes sont actionnées par le système d'entraînement sautant 11 et effectue un pas, l'une de ses dents pousse la bascule qui pivote sur son axe. Par sa troisième branche, la bascule 42 amène le doigt 38 dans sa deuxième position et contraint le système de rappel. Pour chaque pignon, le cran 40 est libéré, chaque ressort sautoir 27 peut alors être soulevé par son pignon qui est entraîné en rotation par sa roue menée. Chaque sautoir 27 coopère avec son pignon pour que celui-ci termine son pas. Simultanément, les roues menantes terminent également leur pas, sous l'effet du sautoir 12 de la roue d'entraînement 10.When the driving wheels are actuated by the jumping drive system 11 and takes a step, one of its teeth pushes the rocker which pivots on its axis. By its third branch, the rocker 42 brings the finger 38 in its second position and constrains the return system. For each pinion, the notch 40 is released, each jumper spring 27 can then be lifted by its pinion which is rotated by its driven wheel. Each jumper 27 cooperates with its pinion so that it ends his step. Simultaneously, the driving wheels also complete their pitch, under the effect of the jumper 12 of the drive wheel 10.

Dès lors que la roue menante a effectué son pas, la bascule 42 retombe, sous l'action du système de rappel. Chaque doigt 38 revient alors à sa première position et prend à nouveau place dans le cran 40, verrouillant à nouveau le sautoir 27 dans sa première position. Les planches 26, 28 et 30 ne peuvent ainsi faire de double-saut sous l'effet de leur inertie, puisque, les roues menantes étant fortement maintenue par le sautoir 12, elles sont fixes et ne peuvent soulever la bascule 42 pour déverrouiller les sautoirs 27.As soon as the driving wheel has made its step, the rocker 42 falls back under the action of the return system. Each finger 38 then returns to its first position and takes place again in the notch 40, again locking the jumper 27 in its first position. The boards 26, 28 and 30 can thus make double-jump under the effect of their inertia, since, the driving wheels being strongly maintained by the jumper 12, they are fixed and can not lift the latch 42 to unlock the jumpers 27.

Dans un cas tel que celui illustré où la roue menante, c'est-à-dire les roues 14, 16 et 18, ne présente pas une dent au niveau de la bascule à chaque pas, la bascule 42 peut coopérer simultanément avec plusieurs roues menantes afin de libérer l'organe de verrouillage à chaque pas.In a case such as that illustrated where the driving wheel, that is to say the wheels 14, 16 and 18, does not present a tooth at the level of the rocker at each step, the latch 42 can cooperate simultaneously with several wheels leading to release the locking member at each step.

Ainsi est proposé un dispositif permettant d'empêcher toute rotation intempestive des planches d'affichage, celles-ci ne pouvant tourner que lorsqu'elles sont effectivement mises en rotation et étant automatiquement bloquées à la fin du mouvement qu'elles doivent théoriquement effectuer. Le dispositif proposé peut très simplement s'appliquer à tout affichage par disque ou à aiguille, notamment de type sautant, quelle que soit l'information affichée.Thus is proposed a device for preventing inadvertent rotation of the display boards, they can turn only when they are actually rotated and automatically blocked at the end of the movement they must theoretically perform. The proposed device can very simply be applied to any display disc or needle, including jumping type, regardless of the information displayed.

Par ailleurs, les solutions techniques proposées ci-dessus pour effectuer le verrouillage ou le rappel de l'organe de verrouillage ne sont que des exemples particuliers. L'organe de verrouillage pourrait être une bascule, éventuellement terminée par une goupille avec laquelle coopère un ressort séparé. Même s'il trouve une application particulièrement intéressante aux affichages de type sautant, le dispositif de sécurité selon l'invention peut également être utilisée avec des entraînements de type traînant ou semi-traînant, la position des disques ou des aiguilles étant alors sécurisée par rapport à d'éventuels chocs risquant de les faire pivoter.Furthermore, the technical solutions proposed above to perform the locking or the return of the locking member are only particular examples. The locking member could be a rocker, possibly terminated by a pin with which cooperates a separate spring. Although it finds a particularly interesting application to jumping type displays, the safety device according to the invention can also be used with trailing or semi-trailing type drives, the position of the discs or needles then being secured relative to possible shocks that could cause them to rotate.

Claims (7)

  1. An information display mechanism, comprising
    a driven wheel (20, 22, 24) mobile in rotation supporting a display disc (29, 28, 30),
    a driving wheel (14, 16, 18) mobile in rotation in order to be driven by a watch movement and driving the driven wheel (20, 22, 24),
    means (27) for positioning the driven wheel (20, 22, 24), capable of evolving between a first position in which they maintain the driven wheel, and a second position in which they leave the rotation of the driven wheel free,
    characterized in that it includes a security device comprising a locking organ (36) evolving between two stable positions, a first in which it maintains the positioning means (27) in their first position, and a second in which it leaves the positioning means (27) free,
    said locking organ (36) going from its first to its second position under the action of the driven wheel (20, 22, 24) and from its second to its first position under the effect of a return system.
  2. The mechanism according to claim 1, characterized in that the security device comprises a lever (42) cooperating, on one hand, with the driving wheel (14, 16, 18) and on the other hand, with the locking organ (36) in order to bring it from its first to its second position under the action of the driving wheel, while stressing the return system.
  3. The mechanism according to one of claims 1 and 2, characterized in that the locking organ (36) is a finger (38) cooperating with the positioning means (27).
  4. The mechanism according to claim 3, characterized in that the positioning means (27) are a jumper, said jumper being provided with a notch (40) with which the finger (38) cooperates.
  5. The mechanism according to claim 4, characterized in that said notch (40) and said finger (38) are arranged such that, when the finger (38) is in its first position, it exerts a force on the notch (40) preventing the movement of the jumper which causes the rotation of the driven wheel (20, 22, 24).
  6. The mechanism according to one of claims 3 to 5, characterized in that the finger (38) is a spring strip and also constitutes the return system.
  7. The mechanism according to one of claims 2 to 6, comprising
    a plurality of driven wheels (20, 22, 24) arranged concentrically and each supporting a display disc (29, 28, 30), the display discs being concentric to each other,
    a plurality of driving wheels (14, 16, 18) mobile in rotation in order to be driven by the watch movement and each driving a driven wheel,
    characterized in that said lever (42) is capable of cooperating with several driven wheels (20, 22, 24).
EP20070103010 2007-02-23 2007-02-23 Security device for display Not-in-force EP1962152B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20070103010 EP1962152B1 (en) 2007-02-23 2007-02-23 Security device for display
DE200760002469 DE602007002469D1 (en) 2007-02-23 2007-02-23 Protection device for display.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20070103010 EP1962152B1 (en) 2007-02-23 2007-02-23 Security device for display

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EP1962152A1 EP1962152A1 (en) 2008-08-27
EP1962152B1 true EP1962152B1 (en) 2009-09-16

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Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE543125T1 (en) 2008-10-24 2012-02-15 Eta Sa Mft Horlogere Suisse AUXILIARY DEVICE FOR MAINTAINING THE POSITION OF A DATE DISC FOR A CLOCK MOVEMENT
FR2973122B1 (en) * 2011-03-23 2014-01-03 Samep Montres Emile Pequignet ACTUATION MECHANISM FOR MOVEMENT WATCHING AND MOVING WATCHING CORRESPONDING
EP3173878B1 (en) 2015-11-26 2021-05-26 Rolex Sa Timepiece calendar system
EP3173877B1 (en) 2015-11-26 2019-10-16 Rolex Sa Timepiece calendar system
EP3173876B1 (en) 2015-11-26 2020-09-02 Rolex Sa Timepiece calendar system
JP6661379B2 (en) * 2016-01-13 2020-03-11 セイコーインスツル株式会社 Jumper mechanism, movement and clock
EP3913442B1 (en) * 2020-05-20 2023-05-17 Blancpain SA Retrograde display mechanism for a timepiece provided with a safety device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD126558B1 (en) * 1976-07-15 1981-01-28 Veb Uhren Und Maschinenkombinat LOCKING MECHANISM FOR CALENDER WATCHES
FR2796732B1 (en) 1999-07-19 2001-11-02 Girard Perregaux Sa WATCHMAKING PIECE WITH DISPLAY OF THE QUANTIEME

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EP1962152A1 (en) 2008-08-27

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