EP1070996A1 - Timepiece with date display - Google Patents

Timepiece with date display Download PDF

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Publication number
EP1070996A1
EP1070996A1 EP00810582A EP00810582A EP1070996A1 EP 1070996 A1 EP1070996 A1 EP 1070996A1 EP 00810582 A EP00810582 A EP 00810582A EP 00810582 A EP00810582 A EP 00810582A EP 1070996 A1 EP1070996 A1 EP 1070996A1
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EP
European Patent Office
Prior art keywords
signs
disc
board
timepiece according
discs
Prior art date
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Granted
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EP00810582A
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German (de)
French (fr)
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EP1070996B1 (en
Inventor
Ray Claude
Laurent Besse
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Girard Perregaux SA
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Girard Perregaux SA
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Publication of EP1070996A1 publication Critical patent/EP1070996A1/en
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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
    • 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 a timepiece with display of the date by means of two disks bearing the signs respectively forming the units and the tens.
  • the upper disc is made of metal or any other opaque material, it must, of course, include cutouts so that the disc visible through them, which weakens it and increases the risk of deformation. It is therefore essential to take additional precautions during manufacture and provide space important between the two discs, to avoid any risk of friction.
  • the two digits displaying the date are therefore on two levels different. The one furthest from the surface of the dial is necessarily less lit than the other, which affects the aesthetics of the watch.
  • the main object of the present invention is to overcome these drawbacks and, more specifically, to allow a display of the date which is both of large size and homogeneous structure.
  • the signs carried by the upper disc are arranged on its underside and that the signs carried by the lower disc are arranged on its upper face. These signs are thus found in very close to each other and the light travels almost the same path, thanks to which their appearance is almost identical.
  • the axes of rotation of the discs are preferably separated by a distance substantially equal to r 1 + r 2 - 2e, r 1 and r 2 being the radii of the discs and e the width of the ring bearing the signs.
  • the transparent upper disc is provided with an anti-reflective surface treatment.
  • the board engaged with the pinion of the disc of the units has thirty teeth and a space
  • the plank engaged with the tens disc gear has four teeth and twenty-seven spaces distributed according to the sequence: nine spaces - one tooth - nine spaces - one tooth - nine spaces - one tooth - one space, one tooth.
  • the timepiece shown in the drawing in this case a watch movement, comprises a plate 10 intended to serve as a support, in particular, for a date mechanism.
  • the latter comprises two discs 14 and 16, of the same radius r , each carrying, on a peripheral ring of width e , a series of signs 14a and 16a allowing the display respectively of tens and units of the date.
  • the tens disc 14 is slightly lower than the disc of units 16 and typically carries the signs 14a, regularly distributed in number of 8, which twice form the sequence 0 (or a space white), 1, 2, 3. It can be, for example, metal, opaque plastic or another transparent material (plastic, glass or sapphire) coated with a opaque layer on its underside.
  • the disc of the units 16 also bears the signs in a conventional manner.
  • 16a regularly divided into 10, which form the series of figures from 0 to 9. It must be made of transparent material, such as plastic, glass or sapphire.
  • its upper face is coated with an anti-reflective layer 16c, which improves the readability of display.
  • the lower disc 14 and the upper disc 16 pivot around axes parallel to each other, on tenons 18 and 20 ( Figure 3) which they are rendered secured by screws 22 and 24.
  • the two discs 14 and 16 cooperate to present in juxtaposition the signs of their respective rings so as to provide an indication of the date.
  • the distance D separating the tenons 18 and 20 must be substantially equal to: 2 (r- e).
  • the date is read through a dial 26 in which a window schematically represented in FIG. 1 by a rectangle 28.
  • the signs 14a of the lower disc are arranged on its upper face but that the signs 16a of the disc are arranged on its underside. So the difference in levels between signs 14a and 16a corresponds substantially to the space between the two discs, which is extremely small, typically from 0.1 to 0.2 mm.
  • the drive of the discs 14 and 16 is ensured by means of two pinions 32 and 34 respectively mounted on their axes and under the discs. These gables each have as many teeth that the disc associated with it includes signs. It means that the pinion 32 of the tens disc 14 carries 8 teeth and that the pinion 34 of the disc of units 16 in door 10.
  • Two identical long chains 36 and 38 cooperate respectively with the pinions 32 and 34 to position them. As will be described later, these necklaces are mounted adjustable in position to ensure optimal alignment of signs carried by the two discs.
  • Sprockets 32 and 34 mesh with a mounted drive wheel 40 pivoting between them on the plate 10 to which it is fixed by means of a screw 42. Note that the axes of these two pinions (and therefore discs 14 and 16) and the axis of the drive wheel 40 are aligned.
  • a trigger 44 which will be described later in detail, serves to achieve a instantaneous date drive by acting on the control wheel 40. It is armed by a pin 46 mounted on a wheel of twenty-four 48 hours which performs one round per day. This is linked to the cog of timer in a conventional manner and not shown in the drawing.
  • the wheel of control 40 is formed by two superimposed boards 50 and 52, provided teeth 50a and 52a respectively.
  • the teeth 50a of the board upper meshes with the pinion 32 associated with the lower disc of the tens 14, while the toothing 52a of the lower board meshes with the pinion 34 associated with the upper disc of the units 16.
  • the two boards are positioned relative to each other by means of pins 54.
  • the teeth 50a and 52a have the same module and the same pitch diameter but, as shown in Figure 2, they are incomplete. More precisely, the modulus of these teeth is equal to 1/31 th of their original diameter.
  • Each set of teeth should have thirty-one teeth but, as can be notice, the teeth 50a have thirty teeth and a space, while the toothing 52a has four teeth and twenty-seven spaces.
  • Such a configuration of the wheel 40 ensures drive of the discs 14 and 16 so that they make 1 half turn and 3 turns respectively months, and display successively the numbers from 1 to 31, then return to 1.
  • the four teeth and twenty-seven spaces of the lower plate 52 are distributed according to the following sequence: nine spaces - one tooth - nine spaces - one tooth - nine spaces - one tooth - one space - a tooth.
  • the two boards are arranged so that the tooth placed after the isolated space of the board 52 meshes with the pinion 34 when the single space of the board 50 is located opposite the pinion 32. This position corresponds to the transition from 31 of a month to the 1st of the following month.
  • Trigger 44 provides the link between the twenty-four hour wheel 48 and the control wheel 40. It takes the form of a piece of metal in U, with three elastic arms 44a, 44b and 44c. It is arranged in the thickness of the movement so as to be able to cooperate on the one hand with the lower board 52 and secondly with the pin 46.
  • the arm 44a secures the trigger 44 on the plate 10, by its free end formed by a board 44d pierced with holes 44e intended for the engagement of a pin and a screw not shown in the drawing.
  • a structure 44f allowing the correction of the date, a function which will be described later.
  • the arm 44c comprises, at its free end, a jumper 44g provided with two bosses 44h and 44i engaged with the toothing 52a of the board 52 and, in its middle part, a drive structure formed by a withdrawal plan 44j and a 44k cocking finger. This structure cooperates with the pin 46 of the twenty-four hour wheel 48.
  • the wheel 48 rotates counterclockwise. It is oriented so that at the end of the day, its pin 46 comes to bear against the plane of withdrawal 44d. The force it generates then causes a deformation of the trigger 44 so that the jumper 44g moves away from the toothing 52a, until that the bosses 44h and 44i are no longer in contact with it. This position is reached when the pin 46 finishes sweeping the withdrawal plane 44j and enters in contact with finger 44k.
  • the rotational movement of the pin 46 brings the trigger 44 towards the right, with a displacement substantially equal to one step of the wheel 40, then towards the latter until the bosses 44h and 44i again enter the spaces between the teeth of the board 52. In this position, the pin 46 can no longer cause the trigger 44. It gradually releases from the 44k finger, finally releasing the trigger which then resumes its rest position as shown in the drawing, while moving to the left and advancing one wheel 40 which, at its turn acts on the two pinions 32 and 34.
  • the 44g long necklace has the two bosses 44h and 44i, which are distant from each other by a value equal to the pitch of the toothing 52a. There are, of the kind, always at least two surfaces of the bosses which cooperate with the toothing 52a to ensure the drive over an angle corresponding to a not.
  • the correction of the date is done, in a conventional manner, by means of a time-setting rod (not shown in the drawing) which drives a wheel correction 56 provided with four pins 58 cooperating with the structure 44f. More specifically, the latter is formed of a withdrawal plan 44l and with a finger 44m.
  • the assembly formed by the pins 58 and the structure 44f works identically to the assembly defined by pin 46, the plane 44j and finger 44k.
  • the two jumpers 36 and 38 are mounted adjustable in position in order to ensure optimal alignment of the signs carried by the two discs.
  • they have a U-shaped body whose two branches, identified by the letters a and b , are extended by a fork c .
  • the branch has a spring form and meshes, by its free end, with the pinion 32 or 34 to ensure the jumper function.
  • the branch b is rigid. Its free end is provided with a cylindrical hole in which a screw 60 is engaged, while its other end has an oblong hole provided with a recess, in which a screw 62 is engaged.
  • the fork c cooperates with an eccentric 64.
  • the screws 60 and 62 as well as the eccentric 64 are fixed in the plate.
  • the tens disc 14 as shown, comprises two series of signs 0, 1, 2, 3, which defines 8 positions. In this way, its diameter is substantially the same as that of the disc of the units 16, which has 10 distinct positions. As a variant, it is also possible to provide a disc 14 having only a series of signs, ie 4 distinct positions, which means that it can be of smaller diameter. In this case, the distance separating the axes of the two discs, with respective radii r 1 and r 2 , must be substantially equal to r 1 + r 2 -2e.
  • the embodiment described advantageously comprises two discs pivoting around separate axes, but it would also be possible to arrange them coaxially.

Abstract

Clockwork comprises two disks (14, 16) rotating around their centers (22, 24). Upper disk (16) is transparent, and carries numbers forming units of the date. Lower disk (14) carries numbers forming tens of the date. Clockwork also comprises driving mechanism so that disks rotate, and display correct date. Axis of rotation of disks are separated by distance equals to r(1) + r(2) - 2 asterisk e, where r(1) and r(2) are disks radii, and e is width of list of numbers.

Description

La présente invention concerne une pièce d'horlogerie à affichage du quantième au moyen de deux disques portant respectivement les signes formant les unités et les dizaines.The present invention relates to a timepiece with display of the date by means of two disks bearing the signs respectively forming the units and the tens.

Une pièce de ce type est décrite dans le brevet CH 310 559. Les deux disques sont alors placés côte à côte au même niveau. Une telle structure permet de disposer de chiffres de plus grande dimension qu'avec un disque de quantième unique, tout en réduisant la surface occupée sur le mouvement.A part of this type is described in patent CH 310 559. The two discs are then placed side by side at the same level. Such a structure provides larger digits than with a disc single date, while reducing the area occupied on the movement.

En superposant les deux disques, comme cela est décrit dans la demande de brevet EP 529 191, il est possible de diminuer encore la surface occupée. Lorsque le disque supérieur est en métal ou tout autre matériau opaque, il doit, bien entendu, comporter des découpes de manière à ce que le disque inférieur soit visible à travers elles, ce qui le fragilise et augmente le risque de déformation. Il est, en conséquence, indispensable de prendre des précautions supplémentaires lors de la fabrication et de prévoir un espace important entre les deux disques, pour éviter tout risque de frottement. Les deux chiffres affichant le quantième se trouvent donc à deux niveaux différents. Celui qui est le plus éloigné de la surface du cadran est nécessairement moins éclairé que l'autre, ce qui affecte l'esthétique de la montre.By superimposing the two discs, as described in the request for EP 529 191, it is possible to further decrease the occupied surface. When the upper disc is made of metal or any other opaque material, it must, of course, include cutouts so that the disc visible through them, which weakens it and increases the risk of deformation. It is therefore essential to take additional precautions during manufacture and provide space important between the two discs, to avoid any risk of friction. The two digits displaying the date are therefore on two levels different. The one furthest from the surface of the dial is necessarily less lit than the other, which affects the aesthetics of the watch.

En outre, et dans l'un comme dans l'autre des exemples donnés ci-dessus, il existe obligatoirement une marque entre les deux signes, qui affecte tant l'esthétique que la qualité de la lecture du quantième.Furthermore, and in either of the examples given above, it there must be a mark between the two signs, which affects both aesthetics as the quality of the date reading.

La présente invention a essentiellement pour but de pallier ces inconvénients et, plus précisément, de permettre un affichage du quantième qui soit à la fois de grande dimension et de structure homogène.The main object of the present invention is to overcome these drawbacks and, more specifically, to allow a display of the date which is both of large size and homogeneous structure.

De façon plus précise, l'invention concerne une pièce d'horlogerie à affichage du quantième, qui est caractérisée en ce qu'elle comporte:

  • deux disques rotatifs au moins partiellement superposés, le disque supérieur étant transparent, qui portent respectivement, régulièrement répartis sur un anneau périphérique, la série des signes formant les unités du quantième et la série des signes formant les dizaines et qui coopèrent pour présenter lesdits signes en juxtaposition, et
  • un mécanisme d'entraínement desdits disques en rotation de manière à ce que lesdits signes juxtaposés fournissent une indication du quantième.
More specifically, the invention relates to a timepiece with date display, which is characterized in that it comprises:
  • two rotary discs at least partially superimposed, the upper disc being transparent, which respectively carry, regularly distributed on a peripheral ring, the series of signs forming the units of the date and the series of signs forming the tens and which cooperate to present said signs in juxtaposition, and
  • a drive mechanism of said rotating discs so that said juxtaposed signs provide an indication of the date.

De façon avantageuse, les signes portés par le disque supérieur sont disposés sur sa face inférieure et que les signes portés par le disque inférieur sont disposés sur sa face supérieure. Ces signes se trouvent ainsi dans des plans très proches l'un de l'autre et la lumière parcourt pratiquement le même trajet, grâce à quoi leur aspect est quasiment identique.Advantageously, the signs carried by the upper disc are arranged on its underside and that the signs carried by the lower disc are arranged on its upper face. These signs are thus found in very close to each other and the light travels almost the same path, thanks to which their appearance is almost identical.

Les axes de rotation des disques sont, de préférence, séparés d'une distance sensiblement égale à r1 + r2 - 2e , r1 et r2 étant les rayons des disques et e la largeur de l'anneau portant les signes.The axes of rotation of the discs are preferably separated by a distance substantially equal to r 1 + r 2 - 2e, r 1 and r 2 being the radii of the discs and e the width of the ring bearing the signs.

Par ailleurs, afin d'obtenir une qualité de lecture aussi bonne que possible, le disque supérieur transparent est muni d'un traitement de surface antireflet.Furthermore, in order to obtain the best possible reading quality, the transparent upper disc is provided with an anti-reflective surface treatment.

Selon un mode de réalisation préféré, le mécanisme d'entraínement comprend:

  • une roue effectuant un tour en vingt-quatre heures,
  • une roue de commande formée de deux planches superposées et comportant chacune une denture dont le pas est égal à 1/31 ème de leur diamètre primitif,
  • deux pignons respectivement solidaires des deux disques, comportant autant de dents qu'ils ont de signes et engrenant avec lesdites planches, et
  • des moyens d'accouplement de la roue de vingt-quatre heures avec ladite roue de commande pour la faire tourner d'un pas par jour.
According to a preferred embodiment, the drive mechanism comprises:
  • a wheel making one revolution in twenty-four hours,
  • a control wheel formed of two superimposed boards and each having a toothing whose pitch is equal to 1/31 th of their original diameter,
  • two pinions respectively integral with the two discs, having as many teeth as they have signs and meshing with said boards, and
  • means for coupling the 24-hour wheel with said control wheel to rotate it one step per day.

Avantageusement, la planche en prise avec le pignon du disque des unités comporte trente dents et un espace, tandis que la planche en prise avec le pignon du disque des dizaines comporte quatre dents et vingt - sept espaces répartis selon la séquence: neuf espaces - une dent - neuf espaces - une dent - neuf espaces - une dent - un espace, une dent.Advantageously, the board engaged with the pinion of the disc of the units has thirty teeth and a space, while the plank engaged with the tens disc gear has four teeth and twenty-seven spaces distributed according to the sequence: nine spaces - one tooth - nine spaces - one tooth - nine spaces - one tooth - one space, one tooth.

Enfin, les moyens d'accouplement de la roue de vingt-quatre heures avec la roue de commande comportent:

  • une goupille portée par la roue de vingt-quatre heures, et
  • une détente comprenant un sautoir coopérant avec la planche de la roue de commande en prise avec le disque des unités et muni de deux bossages distants l'un de l'autre d'une valeur égale au pas de la denture de cette planche, une structure d'entraínement coopérant avec ladite goupille et un organe élastique portant ledit sautoir et ladite structure,
   cet agencement étant tel qu'à chaque arrivée de la goupille contre la structure d'entraínement, la séquence des mouvements suivants est enclenchée:
  • le sautoir se désolidarise de sa planche,
  • l'organe élastique est armé,
  • le sautoir engrène de nouveau avec ladite planche, et
  • la structure d'entraínement se libère de la goupille, permettant ainsi le désarmage de l'organe élastique et l'avance d'un pas de la planche sous l'action du sautoir.
Finally, the means of coupling the twenty-four hour wheel with the control wheel comprise:
  • a pin carried by the twenty-four hour wheel, and
  • a trigger comprising a jumper cooperating with the board of the control wheel in engagement with the disc of the units and provided with two bosses distant from each other by a value equal to the pitch of the teeth of this board, a structure drive cooperating with said pin and an elastic member carrying said jumper and said structure,
this arrangement being such that each time the pin arrives against the drive structure, the following sequence of movements is started:
  • the saltire separates from its board,
  • the elastic member is armed,
  • the jumper meshes again with said board, and
  • the drive structure is freed from the pin, allowing disarming of the elastic member and advancing one step of the board under the action of the jumper.

D'autres avantages et caractéristiques de l'invention ressortiront de la description qui va suivre, faite en regard du dessin annexé, dans lequel:

  • la figure 1 est une vue partielle en plan d'une pièce d'horlogerie selon l'invention,
  • la figure 2 montre les organes qui assurent l'entraínement des deux disques, ceux-ci étant représentés en écorché sans leurs signes; et
  • la figure 3 est une vue en coupe selon la ligne lll-lll de la pièce représentée à la figure 1.
Other advantages and characteristics of the invention will emerge from the description which follows, given with reference to the appended drawing, in which:
  • FIG. 1 is a partial plan view of a timepiece according to the invention,
  • Figure 2 shows the bodies which ensure the drive of the two discs, these being shown in cutaway without their signs; and
  • Figure 3 is a sectional view along line III-III of the part shown in Figure 1.

La pièce d'horlogerie représentée au dessin, en l'occurrence un mouvement de montre, comporte une platine 10 destinée à servir de support, notamment, à un mécanisme de quantième. Ce dernier comprend deux disques 14 et 16, de même rayon r, portant chacun, sur un anneau périphérique de largeur e, une série de signes 14a et 16a permettant l'affichage respectivement des dizaines et des unités du quantième.The timepiece shown in the drawing, in this case a watch movement, comprises a plate 10 intended to serve as a support, in particular, for a date mechanism. The latter comprises two discs 14 and 16, of the same radius r , each carrying, on a peripheral ring of width e , a series of signs 14a and 16a allowing the display respectively of tens and units of the date.

Le disque des dizaines 14 se trouve légèrement plus bas que le disque des unités 16 et porte, de manière classique les signes 14a, régulièrement répartis au nombre de 8, qui forment deux fois la suite 0 (ou un espace blanc), 1, 2, 3. Il peut être, par exemple, en métal, en plastique opaque ou en un autre matériau transparent (plastique, verre ou saphir) revêtu d'une couche opaque sur sa face inférieure.The tens disc 14 is slightly lower than the disc of units 16 and typically carries the signs 14a, regularly distributed in number of 8, which twice form the sequence 0 (or a space white), 1, 2, 3. It can be, for example, metal, opaque plastic or another transparent material (plastic, glass or sapphire) coated with a opaque layer on its underside.

Le disque des unités 16 porte, également de manière classique, les signes 16a, régulièrement répartis au nombre de 10, qui forment la suite des chiffres de 0 à 9. Il est obligatoirement réalisé en matériau transparent, tel que du plastique, du verre ou du saphir. De manière avantageuse, sa face supérieure est revêtue d'une couche anti-reflet 16c, ce qui améliore la lisibilité de l'affichage.The disc of the units 16 also bears the signs in a conventional manner. 16a, regularly divided into 10, which form the series of figures from 0 to 9. It must be made of transparent material, such as plastic, glass or sapphire. Advantageously, its upper face is coated with an anti-reflective layer 16c, which improves the readability of display.

Le disque inférieur 14 et le disque supérieur 16 pivotent, autour d'axes parallèles entre eux, sur des tenons 18 et 20 (figure 3) dont ils sont rendus solidaires au moyen de vis 22 et 24.The lower disc 14 and the upper disc 16 pivot around axes parallel to each other, on tenons 18 and 20 (Figure 3) which they are rendered secured by screws 22 and 24.

Les deux disques 14 et 16 coopèrent pour présenter en juxtaposition les signes de leurs anneaux respectifs de manière à fournir une indication du quantième. Afin que cette juxtaposition soit réalisée correctement, on remarquera que la distance D séparant les tenons 18 et 20 doit être sensiblement égale à: 2 (r- e). The two discs 14 and 16 cooperate to present in juxtaposition the signs of their respective rings so as to provide an indication of the date. In order for this juxtaposition to be carried out correctly, it will be noted that the distance D separating the tenons 18 and 20 must be substantially equal to: 2 (r- e).

Le quantième est lu au travers d'un cadran 26 dans lequel est pratiqué un guichet schématiquement représenté sur la figure 1 par un rectangle 28. The date is read through a dial 26 in which a window schematically represented in FIG. 1 by a rectangle 28.

Il est particulièrement avantageux que les signes 14a du disque inférieur soient disposés sur sa face supérieure mais que les signes 16a du disque supérieur soient disposés sur sa face inférieure. Ainsi, la différence de niveaux entre les signes 14a et 16a correspond sensiblement à l'espace compris entre les deux disques, qui est extrêmement faible, typiquement de 0.1 à 0.2 mm.It is particularly advantageous that the signs 14a of the lower disc are arranged on its upper face but that the signs 16a of the disc are arranged on its underside. So the difference in levels between signs 14a and 16a corresponds substantially to the space between the two discs, which is extremely small, typically from 0.1 to 0.2 mm.

En outre, et comme le montre la figure 1, on voit que cette construction permet d'éliminer toute marque peu esthétique entre les signes des deux anneaux. Par ailleurs, moyennant un dimensionnement adéquat du guichet 28, les bords des disques ne sont pas visibles.In addition, and as shown in Figure 1, we see that this construction eliminates any unsightly mark between the signs of the two rings. In addition, with adequate sizing of the counter 28, the edges of the discs are not visible.

Ainsi est donc réalisé un affichage de quantième à grands chiffres 30 dans des conditions d'esthétique optimales.Thus, a large-digit date display 30 is produced in optimal aesthetic conditions.

Comme le montrent mieux les figures 2 et 3, l'entraínement des disques 14 et 16 est assuré au moyen de deux pignons 32 et 34 respectivement montés sur leurs axes et sous les disques. Ces pignons comportent chacun autant de dents que le disque qui lui est associé comprend de signes. Cela signifie que le pignon 32 du disque des dizaines 14 porte 8 dents et que le pignon 34 du disque des unités 16 en porte 10.As best shown in Figures 2 and 3, the drive of the discs 14 and 16 is ensured by means of two pinions 32 and 34 respectively mounted on their axes and under the discs. These gables each have as many teeth that the disc associated with it includes signs. It means that the pinion 32 of the tens disc 14 carries 8 teeth and that the pinion 34 of the disc of units 16 in door 10.

Deux sautoirs identiques 36 et 38 coopèrent respectivement avec les pignons 32 et 34 pour les positionner. Ainsi qu'il sera décrit plus loin, ces sautoirs sont montés réglables en position afin d'assurer un alignement optimal des signes portés par les deux disques.Two identical long chains 36 and 38 cooperate respectively with the pinions 32 and 34 to position them. As will be described later, these necklaces are mounted adjustable in position to ensure optimal alignment of signs carried by the two discs.

Les pignons 32 et 34 engrènent avec une roue de commande 40 montée pivotante entre eux sur la platine 10 à laquelle elle est fixée au moyen d'une vis 42. On notera que les axes de ces deux pignons (et donc des disques 14 et 16) et l'axe de la roue de commande 40 sont alignés.Sprockets 32 and 34 mesh with a mounted drive wheel 40 pivoting between them on the plate 10 to which it is fixed by means of a screw 42. Note that the axes of these two pinions (and therefore discs 14 and 16) and the axis of the drive wheel 40 are aligned.

Une détente 44, qui sera décrite plus loin en détail, sert à réaliser un entraínement de quantième instantané en agissant sur la roue de commande 40. Elle est armée par une goupille 46 montée sur une roue de vingt-quatre heures 48 qui effectue un tour par jour. Celle-ci est reliée au rouage de minuterie de manière classique et non représentée au dessin.A trigger 44, which will be described later in detail, serves to achieve a instantaneous date drive by acting on the control wheel 40. It is armed by a pin 46 mounted on a wheel of twenty-four 48 hours which performs one round per day. This is linked to the cog of timer in a conventional manner and not shown in the drawing.

Ainsi qu'on peut le voir plus particulièrement sur la figure 3, la roue de commande 40 est formée de deux planches 50 et 52 superposées, munies respectivement d'une denture 50a et 52a. La denture 50a de la planche supérieure engrène avec le pignon 32 associé au disque inférieur des dizaines 14, alors que la denture 52a de la planche inférieure engrène avec le pignon 34 associé au disque supérieur des unités 16. Les deux planches sont positionnées l'une par rapport à l'autre au moyen de goupilles 54.As can be seen more particularly in FIG. 3, the wheel of control 40 is formed by two superimposed boards 50 and 52, provided teeth 50a and 52a respectively. The teeth 50a of the board upper meshes with the pinion 32 associated with the lower disc of the tens 14, while the toothing 52a of the lower board meshes with the pinion 34 associated with the upper disc of the units 16. The two boards are positioned relative to each other by means of pins 54.

Les dentures 50a et 52a ont un même module et un même diamètre primitif mais, comme le montre la figure 2, elles sont incomplètes. Plus précisément, le module de ces dentures est égal à 1/31 ème de leur diamètre primitif. Chaque denture devrait comporter trente et une dents mais, comme on peut le constater, la denture 50a compte trente dents et un espace, alors que la denture 52a comporte quatre dents et vingt-sept espaces. Une telle configuration de la roue 40 permet d'assurer un entraínement des disques 14 et 16 de telle sorte qu'ils effectuent respectivement 1 demi-tour et 3 tours par mois, et affichent ensemble successivement les nombres de 1 à 31, puis retournent à 1.The teeth 50a and 52a have the same module and the same pitch diameter but, as shown in Figure 2, they are incomplete. More precisely, the modulus of these teeth is equal to 1/31 th of their original diameter. Each set of teeth should have thirty-one teeth but, as can be notice, the teeth 50a have thirty teeth and a space, while the toothing 52a has four teeth and twenty-seven spaces. Such a configuration of the wheel 40 ensures drive of the discs 14 and 16 so that they make 1 half turn and 3 turns respectively months, and display successively the numbers from 1 to 31, then return to 1.

De manière plus précise encore, les quatre dents et vingt-sept espaces de la planche inférieure 52 sont répartis selon la séquence suivante: neuf espaces - une dent - neuf espaces - une dent - neuf espaces - une dent - un espace - une dent. Les deux planches sont disposées de manière que la dent placée après l'espace isolé de la planche 52 engrène avec le pignon 34 lorsque l'espace unique de la planche 50 se trouve en regard du pignon 32. Cette position correspond au passage du 31 d'un mois au 1er du mois suivant.Even more precisely, the four teeth and twenty-seven spaces of the lower plate 52 are distributed according to the following sequence: nine spaces - one tooth - nine spaces - one tooth - nine spaces - one tooth - one space - a tooth. The two boards are arranged so that the tooth placed after the isolated space of the board 52 meshes with the pinion 34 when the single space of the board 50 is located opposite the pinion 32. This position corresponds to the transition from 31 of a month to the 1st of the following month.

De la sorte, la roue 40 et ses planches 50 et 52 engrènent, par leurs dentures 50a et 52a, avec les pignons 32 et 34 selon les quatre configurations suivantes.

  • Lorsque le disque des dizaines 14 affiche 0, 1 ou 2 et le disque des unités 16 affiche les chiffres de 0 à 8, la roue 40 n'entraíne que le disque des unités 16, à raison d'un pas par jour, par la denture 52a en prise avec la roue 34.
  • Lorsque le disque des dizaines 14 affiche 0, 1 ou 2 et le disque des unités 16 affiche le chiffre 9, les deux disques sont entraínés, les dentures 50a et 52a étant respectivement en prise avec les pignons 32 et 34.
  • Lorsque le disque des dizaines 14 affiche le chiffre 3 et le disque des unités 16 affiche le chiffre 0, la situation est la même que dans la première configuration mentionnée ci-dessus. En d'autres termes, seule la denture 50 entraíne la roue 32. L'affichage passe donc de 30 à 31.
  • Lorsque le disque des dizaines 14 affiche le chiffre 3 et le disque des unités 16 le chiffre 1, seul le disque des dizaines est entraíné, passant de 3 à 0. En d'autres termes, seule la denture 52a entraíne le pignon 34, le chiffre 1 des unités restant en place et l'affichage passant de 31 à 1.
In this way, the wheel 40 and its boards 50 and 52 mesh, by their teeth 50a and 52a, with the pinions 32 and 34 according to the following four configurations.
  • When the tens disc 14 displays 0, 1 or 2 and the units disc 16 displays the numbers 0 to 8, the wheel 40 only drives the units disc 16, one step per day, by the toothing 52a engaged with the wheel 34.
  • When the tens disc 14 displays 0, 1 or 2 and the units disc 16 displays the number 9, the two discs are driven, the teeth 50a and 52a being respectively engaged with the pinions 32 and 34.
  • When the tens disc 14 displays the number 3 and the units disc 16 displays the number 0, the situation is the same as in the first configuration mentioned above. In other words, only the toothing 50 drives the wheel 32. The display therefore changes from 30 to 31.
  • When the tens disc 14 displays the number 3 and the units disc 16 the number 1, only the tens disc is driven, going from 3 to 0. In other words, only the toothing 52a drives the pinion 34, the digit 1 of the units remaining in place and the display going from 31 to 1.

La détente 44 assure la liaison entre la roue de vingt-quatre heures 48 et la roue de commande 40. Elle se présente sous forme d'une pièce de métal en U, avec trois bras élastiques 44a, 44b et 44c. Elle est disposée dans l'épaisseur du mouvement de manière à pouvoir coopérer d'une part avec la planche inférieure 52 et d'autre part avec la goupille 46.Trigger 44 provides the link between the twenty-four hour wheel 48 and the control wheel 40. It takes the form of a piece of metal in U, with three elastic arms 44a, 44b and 44c. It is arranged in the thickness of the movement so as to be able to cooperate on the one hand with the lower board 52 and secondly with the pin 46.

Le bras 44a assure la fixation de la détente 44 sur la platine 10, par son extrémité libre formée d'une planche 44d percée de trous 44e destinés à l'engagement d'une goupille et d'une vis non représentées au dessin. En outre, sensiblement au niveau de la jonction entre les bras 44a et 44b, se trouve une structure 44f permettant la correction du quantième, fonction qui sera décrite plus loin. The arm 44a secures the trigger 44 on the plate 10, by its free end formed by a board 44d pierced with holes 44e intended for the engagement of a pin and a screw not shown in the drawing. In further, substantially at the junction between the arms 44a and 44b, is finds a structure 44f allowing the correction of the date, a function which will be described later.

Le bras 44c comporte, à son extrémité libre, un sautoir 44g muni de deux bossages 44h et 44i en prise avec la denture 52a de la planche 52 et, dans sa partie médiane, une structure d'entraínement formée d'un plan de retrait 44j et d'un doigt d'armage 44k. Cette structure coopère avec la goupille 46 de la roue de vingt-quatre heures 48.The arm 44c comprises, at its free end, a jumper 44g provided with two bosses 44h and 44i engaged with the toothing 52a of the board 52 and, in its middle part, a drive structure formed by a withdrawal plan 44j and a 44k cocking finger. This structure cooperates with the pin 46 of the twenty-four hour wheel 48.

La roue 48 tourne dans le sens anti-horaire. Elle est orientée de manière qu'en fin de journée, sa goupille 46 vienne prendre appui contre le plan de retrait 44j. La force qu'elle engendre provoque alors une déformation de la détente 44 de sorte que le sautoir 44g s'éloigne de la denture 52a, jusqu'à ce que les bossages 44h et 44i ne soient plus à son contact. Cette position est atteinte lorsque la goupille 46 achève de balayer le plan de retrait 44j et entre en contact avec le doigt 44k.The wheel 48 rotates counterclockwise. It is oriented so that at the end of the day, its pin 46 comes to bear against the plane of withdrawal 44d. The force it generates then causes a deformation of the trigger 44 so that the jumper 44g moves away from the toothing 52a, until that the bosses 44h and 44i are no longer in contact with it. This position is reached when the pin 46 finishes sweeping the withdrawal plane 44j and enters in contact with finger 44k.

Le mouvement de rotation de la goupille 46 amène la détente 44 vers la droite, avec un déplacement sensiblement égal à un pas de la roue 40, puis en direction de cette dernière jusqu'à ce que les bossages 44h et 44i pénètrent à nouveau dans les espaces compris entre les dents de la planche 52. Dans cette position, la goupille 46 ne peut plus entraíner la détente 44. Elle se dégage peu à peu du doigt 44k, libérant finalement la détente qui reprend alors sa position de repos tel que représentée au dessin, en se déplaçant vers la gauche et en faisant avancer d'un pas la roue 40 qui, à son tour agit sur les deux pignons 32 et 34.The rotational movement of the pin 46 brings the trigger 44 towards the right, with a displacement substantially equal to one step of the wheel 40, then towards the latter until the bosses 44h and 44i again enter the spaces between the teeth of the board 52. In this position, the pin 46 can no longer cause the trigger 44. It gradually releases from the 44k finger, finally releasing the trigger which then resumes its rest position as shown in the drawing, while moving to the left and advancing one wheel 40 which, at its turn acts on the two pinions 32 and 34.

Comme la denture 52a est privée d'une dent, un simple sautoir poserait problème au moment où il devrait coopérer avec la partie dans laquelle la dent manque, les conditions d'appui n'étant pas les mêmes. C'est pour cette raison que le sautoir 44g comporte les deux bossage 44h et 44i, qui sont distants l'un de l'autre d'une valeur égale au pas de la denture 52a. Il y a, de la sorte, toujours au moins deux surfaces des bossages qui coopèrent avec la denture 52a pour en assurer l'entraínement sur un angle correspondant à un pas.Since the toothing 52a is deprived of a tooth, a simple jumper would pose problem by the time he should cooperate with the party in which the tooth missing, support conditions are not the same. It is for this reason that the 44g long necklace has the two bosses 44h and 44i, which are distant from each other by a value equal to the pitch of the toothing 52a. There are, of the kind, always at least two surfaces of the bosses which cooperate with the toothing 52a to ensure the drive over an angle corresponding to a not.

La correction du quantième se fait, de manière classique, au moyen d'une tige de mise à l'heure (non représentée au dessin) qui entraíne une roue de correction 56 munie de quatre goupilles 58 coopérant avec la structure 44f. De manière plus précise, cette dernière est formée d'un plan de retrait 44l et d'un doigt 44m. L'ensemble que forment les goupilles 58 et la structure 44f travaille de manière identique à l'ensemble défini par la goupille 46, le plan 44j et le doigt 44k.The correction of the date is done, in a conventional manner, by means of a time-setting rod (not shown in the drawing) which drives a wheel correction 56 provided with four pins 58 cooperating with the structure 44f. More specifically, the latter is formed of a withdrawal plan 44l and with a finger 44m. The assembly formed by the pins 58 and the structure 44f works identically to the assembly defined by pin 46, the plane 44j and finger 44k.

Comme déjà mentionné, les deux sautoirs 36 et 38 sont montés réglables en position afin d'assurer un alignement optimal des signes portés par les deux disques. A cet effet, ils comportent un corps en forme de U dont les deux branches, identifiées par les lettres a et b, se prolongent par une fourchette c. La branche a forme ressort et engrène, par son extrémité libre, avec le pignon 32 ou 34 pour assurer la fonction de sautoir. La branche b est rigide. Son extrémité libre est munie d'un trou cylindrique dans lequel est engagée une vis 60, tandis que son autre extrémité possède un trou oblong muni d'une noyure, dans lequel est engagée une vis 62. Enfin, la fourchette c coopère avec un excentrique 64. Les vis 60 et 62 ainsi que l'excentrique 64 sont fixés dans la platine.As already mentioned, the two jumpers 36 and 38 are mounted adjustable in position in order to ensure optimal alignment of the signs carried by the two discs. To this end, they have a U-shaped body whose two branches, identified by the letters a and b , are extended by a fork c . The branch has a spring form and meshes, by its free end, with the pinion 32 or 34 to ensure the jumper function. The branch b is rigid. Its free end is provided with a cylindrical hole in which a screw 60 is engaged, while its other end has an oblong hole provided with a recess, in which a screw 62 is engaged. Finally, the fork c cooperates with an eccentric 64. The screws 60 and 62 as well as the eccentric 64 are fixed in the plate.

Pour régler les sautoirs 36 et 38, il suffit de désserrer les vis 62 puis de tourner les excentriques 64 jusqu'à amener les disques 14 et 16 dans une position de repos pour laquelle leurs signes respectifs sont parfaitement alignés. Les vis 62 sont alors resserrées afin de bloquer les sautoirs dans la position adéquate.To adjust the jumpers 36 and 38, simply loosen the screws 62 and then turn the eccentrics 64 until the discs 14 and 16 are brought into a rest position for which their respective signs are perfectly aligned. The screws 62 are then tightened in order to block the jumpers in the adequate position.

Le disque des dizaines 14, tel que représenté, comporte deux séries de signes 0, 1, 2, 3, ce qui définit 8 positions. De la sorte, son diamètre est sensiblement le même que celui du disque des unités 16, qui a 10 positions distinctes. En variante, il est aussi possible de prévoir un disque 14 n'ayant qu'une série de signes, soit 4 positions distinctes, ce qui fait qu'il peut être de plus petit diamètre. Dans ce cas, la distance séparant les axes des deux disques, de rayons respectifs r1 et r2, doit être sensiblement égale à r1 + r2-2e.The tens disc 14, as shown, comprises two series of signs 0, 1, 2, 3, which defines 8 positions. In this way, its diameter is substantially the same as that of the disc of the units 16, which has 10 distinct positions. As a variant, it is also possible to provide a disc 14 having only a series of signs, ie 4 distinct positions, which means that it can be of smaller diameter. In this case, the distance separating the axes of the two discs, with respective radii r 1 and r 2 , must be substantially equal to r 1 + r 2 -2e.

La présente description a été faite en se référant à un mécanisme d'entraínement de type instantané, mais il est évident que d'autres mécanismes sont utilisables, de type traínant ou semi-instantané par exemple, sans pour autant sortir du cadre de l'invention.The present description has been made with reference to a mechanism of instant type training, but it is obvious that others mechanisms are usable, trailing or semi-instantaneous by example, without departing from the scope of the invention.

Par ailleurs, le mode de réalisation décrit comporte avantageusement deux disques pivotant autour d'axes distincts, mais il serait également possible de les disposer coaxialement.Furthermore, the embodiment described advantageously comprises two discs pivoting around separate axes, but it would also be possible to arrange them coaxially.

Claims (10)

Pièce d'horlogerie à affichage du quantième, caractérisée en ce qu'elle comporte: deux disques rotatifs (14, 16) au moins partiellement superposés, le disque supérieur (16) étant transparent, qui portent respectivement, régulièrement répartis sur un anneau périphérique, la série des signes formant les unités du quantième et la série des signes formant les dizaines et qui coopèrent pour présenter lesdits signes en juxtaposition, et un mécanisme d'entraínement desdits disques en rotation de manière à ce que lesdits signes juxtaposés fournissent une indication du quantième (30). Timepiece with date display, characterized in that it includes: two rotary discs (14, 16) at least partially superimposed, the upper disc (16) being transparent, which respectively carry, regularly distributed on a peripheral ring, the series of signs forming the units of the date and the series of signs forming the tens and which cooperate in presenting said signs in juxtaposition, and a mechanism for driving said rotating discs so that said juxtaposed signs provide an indication of the date (30). Pièce d'horlogerie selon la revendication 1, caractérisée en ce que les signes portés par le disque supérieur (16) sont disposés sur sa face inférieure et que les signes portés par le disque inférieur (14) sont disposés sur sa face supérieure.Timepiece according to claim 1, characterized in that the signs carried by the upper disc (16) are arranged on its face lower and that the signs carried by the lower disc (14) are arranged on its upper face. Pièce d'horlogerie selon l'une des revendications 1 et 2, caractérisée en ce que les axes de rotation des disques sont séparés d'une distance sensiblement égale à r1 + r2 - 2e , r1 et r2 étant les rayons des disques et e la largeur de l'anneau portant les signes.Timepiece according to one of claims 1 and 2, characterized in that the axes of rotation of the discs are separated by a distance substantially equal to r 1 + r 2 - 2e, r 1 and r 2 being the radii of the disks and e the width of the ring bearing the indicia. Pièce d'horlogerie selon l'une des revendications 1 à 3, caractérisée en ce que le disque supérieur transparent est muni d'un traitement de surface antireflet.Timepiece according to one of claims 1 to 3, characterized in that the transparent upper disc is provided with a treatment of anti-reflective surface. Pièce d'horlogerie selon l'une des revendications 1 à 4, caractérisée en ce que ledit mécanisme d'entraínement comprend: une roue (48) effectuant un tour en vingt-quatre heures, une roue de commande (40) formée de deux planches superposées (50, 52) et comportant chacune une denture dont le pas est égal à 1/31 ème de leur diamètre primitif, deux pignons (32, 34) respectivement solidaires des deux disques, comportant autant de dents que ceux-ci ont de signes et engrenant avec lesdites planches, et des moyens d'accouplement de la roue de vingt-quatre heures avec ladite roue de commande pour la faire tourner d'un pas par jour. Timepiece according to one of claims 1 to 4, characterized in that said drive mechanism comprises: a wheel (48) making one revolution in twenty-four hours, a control wheel (40) formed of two superimposed boards (50, 52) and each comprising a toothing whose pitch is equal to 1/31 th of their original diameter, two pinions (32, 34) respectively integral with the two discs, having as many teeth as these have signs and meshing with said boards, and means for coupling the 24-hour wheel with said control wheel to rotate it one step per day. Pièce d'horlogerie selon la revendication 5, caractérisée en ce que: la planche (52) en prise avec le pignon (34) du disque des unités (16) comporte trente dents et un espace, et la planche (50) en prise avec le pignon (32) du disque des dizaines (14) comporte quatre dents et vingt - sept espaces répartis selon la séquence: neuf espaces - une dent - neuf espaces - une dent - neuf espaces - une dent - un espace, une dent. Timepiece according to claim 5, characterized in that: the board (52) engaged with the pinion (34) of the disc of the units (16) has thirty teeth and a space, and the board (50) engaged with the pinion (32) of the tens disc (14) has four teeth and twenty-seven spaces distributed according to the sequence: nine spaces - one tooth - nine spaces - one tooth - nine spaces - one tooth - a space, a tooth. Pièce d'horlogerie selon l'une des revendications 5 et 6, caractérisée en ce que lesdits moyens d'accouplement comportent: une goupille (46) portée par la roue de vingt-quatre heures (48), et une détente (44) comportant un sautoir (44g) coopérant avec la planche (52) en prise avec la roue (34) du disque des unités, une structure d'entraínement (44j, 44k) coopérant avec ladite goupille et un organe élastique (44c) portant ledit sautoir et ladite structure,    cet agencement étant tel qu'à chaque arrivée de la goupille (46) contre la structure d'entraínement, la séquence des mouvements suivants est enclenchée: le sautoir (44g) se désolidarise de sa planche, l'organe élastique (44c) est armé, le sautoir (44g) engrène de nouveau avec ladite planche, et la structure d'entraínement se libère de la goupille, permettant ainsi le désarmage de l'organe élastique et l'avance d'un pas de la planche sous l'action du sautoir. Timepiece according to one of claims 5 and 6, characterized in that said coupling means comprise: a pin (46) carried by the twenty-four hour wheel (48), and a trigger (44) comprising a jumper (44g) cooperating with the board (52) engaged with the wheel (34) of the disc of the units, a drive structure (44j, 44k) cooperating with said pin and an elastic member ( 44c) carrying said jumper and said structure, this arrangement being such that at each arrival of the pin (46) against the drive structure, the sequence of the following movements is engaged: the long necklace (44g) is detached from its board, the elastic member (44c) is armed, the jumper (44g) meshes again with said board, and the drive structure is freed from the pin, allowing disarming of the elastic member and advancing one step of the board under the action of the jumper. Pièce d'horlogerie selon les revendications 6 et 7, caractérisée en ce que ledit sautoir comporte deux bossages (44h, 44i) distants l'un de l'autre d'une valeur égale au pas de la denture de la planche des unités (52). Timepiece according to claims 6 and 7, characterized in that said jumper has two bosses (44h, 44i) distant from each other of a value equal to the pitch of the toothing of the unit board (52). Pièce d'horlogerie selon la revendication 5, caractérisée en ce que chacun desdits pignons (32, 34) est associé à un sautoir (36, 38) servant à le positionner.Timepiece according to claim 5, characterized in that each of said pinions (32, 34) is associated with a jumper (36, 38) serving to position it. Pièce d'horlogerie selon la revendication 9, caractérisée en ce que ledit sautoir est réglable en position afin de permettre un alignement optimal des signes portés par les disques.Timepiece according to claim 9, characterized in that said necklace is adjustable in position to allow optimal alignment of the signs carried by the discs.
EP20000810582 1999-07-19 2000-07-04 Timepiece with date display Expired - Lifetime EP1070996B1 (en)

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FR9909425A FR2796732B1 (en) 1999-07-19 1999-07-19 WATCHMAKING PIECE WITH DISPLAY OF THE QUANTIEME
FR9909425 1999-07-19

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EP1070996B1 (en) 2006-11-29
FR2796732B1 (en) 2001-11-02
FR2796732A1 (en) 2001-01-26

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