EP1462877A2 - Mécanisme d'affichage du quantième - Google Patents
Mécanisme d'affichage du quantième Download PDFInfo
- Publication number
- EP1462877A2 EP1462877A2 EP04003581A EP04003581A EP1462877A2 EP 1462877 A2 EP1462877 A2 EP 1462877A2 EP 04003581 A EP04003581 A EP 04003581A EP 04003581 A EP04003581 A EP 04003581A EP 1462877 A2 EP1462877 A2 EP 1462877A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- mechanism according
- teeth
- pinion
- toothing
- pinions
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000035939 shock Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 230000001419 dependent effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- 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
- G04B19/253—Driving or releasing mechanisms
- G04B19/25333—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement
- G04B19/25353—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by the clockwork movement
- G04B19/25366—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by the clockwork movement manually corrected at the end of months having less than 31 days
Definitions
- the present invention relates to a mechanism for displaying the date in a timepiece such as a watch or a clock, and more particularly a mechanism allowing the display of the date in a large format.
- the invention also relates to a timepiece incorporating the above mechanism.
- the present invention aims to remedy the aforementioned drawback, or at least to reduce their importance, other than by increasing the strength of the necklaces and proposes, to do this, the characteristics set out in the characterizing part of claim 1, particular embodiments of the invention being defined in the dependent claims.
- deindexing of a pinion will be understood to mean a unwanted change in pinion position from first stable position to a second stable position, in one or other of the directions of rotation of the pinion.
- preventing the pinion from de-indexing it is meant that the pinion is prevented from de-indexing in both directions of rotation.
- a date display mechanism arranged between the basic movement and the dial of a timepiece includes, mounted in a plate 1, two indicator discs 2, 3 coplanar and juxtaposed bearing respectively, regularly distributed along their circumference, numbers 0 to 3 or 1 to 3 plus white space indicating the tens of the date and digits 0 to 9 indicating the units of the date.
- These figures appear through a large window 4, shown schematically in Figure 1, formed in the dial of the timepiece.
- the disks indicators 2, 3 are respectively secured to a pinion 5 in the form of a cross and a pinion 6 in the shape of a star, both driven by a mobile in the shape of crown 7.
- the pinions 5, 6 have the same number of teeth or branches as the number of digits carried by the disks 2, 3, i.e. four teeth respectively and ten teeth.
- the crown-shaped mobile 7 has three crowns 70, 71, 72 superimposed and assembled together by pins 8 (see Figures 2, 3).
- the lower crown 70 is the date crown of the basic movement.
- She has internal teeth 73 of thirty-one teeth driven step by step reason for one step per day, that is to say by twenty-four hours, and one revolution completed by thirty-one days by a kinematic chain (not shown) from basic movement.
- internal toothing means a toothing whose active part is oriented, in top view, towards the inside of the crown, in particular a toothing located on the inner periphery of the crown, as shown in the figures.
- the drive of the internal teeth 73, and therefore of the mobile 7, occurs at the end of each day, around midnight.
- this training is either “trailing”, that is to say that it lasts about one to two hours per day, or “semi-instantaneous” (duration of about twenty to forty minutes a day), or “instant” (duration of about ten minutes per day).
- the intermediate crown 71 has an internal toothing 74 to four teeth located above the teeth 73 and cooperating with the pinion of the tens 5 to advance the latter by one step when passing the ninth day of each month to the tenth day, from the nineteenth day to the twentieth day, from twenty-ninth day to thirtieth day and thirty-first day to first day of the following month.
- the upper crown 72 has an internal toothing 75 located above teeth 73 and 74 and comprising thirty teeth and a free space 750 occupying the place of a tooth, this internal toothing 75 cooperating with the pinion units 6 to advance the latter one step each day, except during the passage from the thirty-first day of a month to the first day of the following month when the . gable of units 6 is opposite free space 750 and is therefore not not trained.
- the correction of the indication date is done manually by means of the time-setting rod the timepiece.
- Sautoirs 9a, 9b partially shown in Figure 1, keep in position the pinions 5, 6 when these are not driven by the teeth 74, 75, in a conventional manner per se. If these necklaces 9a, 9b allow effective maintenance of the angular position of the pinions 5, 6 during a normal use of the timepiece, their presence alone is not sufficient to guarantee that the pinions 5, 6 will not change position under the effect of shocks, except at make these jumpers 9a, 9b exert a very high force on the pinions 5, 6, this which is not possible in practice because it would increase unacceptably the energy necessary for the functioning of the mechanism.
- a significant improvement in strength shock mechanism is obtained other than by increasing the force exerted by the jumpers 9a, 9b, namely by a particular shape of the teeth 74, 75 allowing the latter to also serve as stops for the toothing of the pinions 5, 6 preventing the de-indexing of the pinions 5, 6 of preferably at least at any time of each month when the mobile 7 is stationary.
- the toothing 74 has between its four teeth four free spaces 740 (cf. FIG. 3) each having a part 741 defining a diameter D1 of the toothing 74 which is less than the diameter D2 defined by the bottom of the toothing 74.
- the diameter D1 is large enough to allow the crown 71 and therefore the mobile 7 to rotate without driving the tens pinion 5 when it does not not be driven and small enough that when the pinion 5 is facing a part 741, this part 741 serves as a stop for the toothing of the pinion 5 preventing the latter from being de-indexed.
- These parts 741 are moreover preferably long enough that at all times, including when the pinion 5 is driven, one of these parts 741 is opposite the pinion 5 and can thus fulfill its stop function.
- each drive phase of the pinion 5 is prevented from deindex in its direction of drive by a first end portion 741 a (cf. FIG. 1) of a part 741 which forms a stop for the tooth of the pinion 5 in contact with a tooth of toothing 74.
- a second end part 741 b of a part 741 consecutive which extends to a flank of the aforementioned tooth of the toothing 74 and forms a stop for a consecutive tooth of the pinion 5.
- the toothing 75 for its part, is such that, at any time when the mobile 7 is stationary, a tooth of the pinion of the units 6 is located in a free space between two consecutive teeth of the toothing 75 and at least one of these two consecutive teeth act as a stop for the toothing of the pinion of the units 6 so as to prevent the de-indexing of the pinion of the units 6. More particularly, and advantageously, when, as shown in FIG.
- a tooth 10 i of pinion 6 is centered in a free space 11 j of the toothing 75 other than the free space 750, which corresponds to a rest position of the pinion 6 and of the mobile 7, the two consecutive teeth 12 k , 12 k + 1 delimiting the free space 11 j act as a stop, respectively, for the two teeth of the pinion 6, referenced 10 i-1, 10 j + 1, adjacent to the tooth 10 i .
- the movement of the pinion 6 under the effect of a shock is very low. After such an impact, the pinion 6 is returned to its stable angular position by the associated jumper 9b.
- the shape of the toothing 75 as described above prevents the de-indexing of the pinion 6 not only when the mobile 7 is stationary but also during the movements of the mobile 7 between the 1st and the 31st of each month.
- the teeth 75 have a profile sinusoidal as shown in Figures 1 and 2.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromechanical Clocks (AREA)
Abstract
Description
- la figure 1 est une vue de dessus du mécanisme selon l'invention ;
- la figure 2 est une vue de dessus d'un mobile en forme de couronne faisant partie du mécanisme illustré à la figure 1 ;
- la figure 3 est une vue de dessus du mobile illustré à la figure 2, duquel a été retirée une couronne supérieure pour mieux faire apparaítre les dentures d'une couronne inférieure et d'une couronne intermédiaire de ce mobile ;
- la figure 4 est une vue en coupe du mécanisme selon l'invention, prise suivant la ligne IV-IV de la figure 1 ; et
- la figure 5 est une vue en coupe du mécanisme selon l'invention, prise suivant la ligne V-V de la figure 1.
Claims (16)
- Mécanisme pour l'affichage du quantième dans une pièce d'horlogerie, comprenant un premier organe indicateur (2) solidaire d'un premier pignon (5) et indiquant les dizaines du quantième, un second organe indicateur (3) solidaire d'un second pignon (6) et indiquant les unités du quantième, un mobile en forme de couronne (7) comprenant des première et seconde dentures intérieures (74, 75) coopérant respectivement avec les premier et second pignons (5, 6) pour les entraíner, caractérisé en ce que les première et seconde dentures intérieures (74, 75) servent par ailleurs de butées pour les dentures des premier et second pignons (5, 6) empêchant le désindexage des premier et second pignons (5, 6).
- Mécanisme selon la revendication 1, caractérisé en ce que le mobile en forme de couronne (7) est entraíné pas à pas et en ce que les première et seconde dentures intérieures (74, 75) sont agencées pour empêcher le désindexage des premier et second pignons (5, 6) à tout instant où le mobile (7) est immobile.
- Mécanisme selon la revendication 2, caractérisé en ce que les première et seconde dentures intérieures (74, 75) sont agencées pour empêcher le désindexage des premier et second pignons (5, 6) également pendant les déplacements du mobile (7) entre le 1er et le 31 de chaque mois.
- Mécanisme selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les première et seconde dentures intérieures (74, 75) s'étendent dans deux plans différents.
- Mécanisme selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la seconde denture intérieure (75) a un profil sinusoïdal.
- Mécanisme selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le mobile en forme de couronne (7) est entraíné pas à pas à raison d'un pas par jour et d'une révolution complète par trente et un jours.
- Mécanisme selon l'une quelconque des revendications 1 à 6 caractérisé en ce que la première denture (74) comporte quatre dents.
- Mécanisme selon l'une quelconque des revendications 1 à 7, caractérisé en ce que chaque espace libre (740) entre deux dents consécutives de la première denture (74) comporte une partie (741) définissant un diamètre (D1) de la première denture (74) qui est inférieur au diamètre (D2) défini par le fond de la première denture (74), et en ce que ces parties (741) servent de butée pour la denture du premier pignon (5) empêchant le désindexage de ce dernier.
- Mécanisme selon l'une quelconque des revendications 1 à 8, caractérisé en ce que la seconde denture (75) comporte trente dents et un espace libre (750) occupant la place d'une dent, cet espace libre (750) permettant au mobile (7) de tourner sans entraíner le second pignon (6) lors du passage du 31 d'un mois au 1er du mois suivant.
- Mécanisme selon la revendication 9, caractérisé en ce que la seconde denture (75) est telle que, lorsqu'une dent (10i) du second pignon (6) se trouve centrée dans un espace libre (11j) de la seconde denture (75) autre que ledit espace libre (750) occupant la place d'une dent, deux dents consécutives (12k, 12k+1) délimitant cet autre espace libre (11j) fassent office de butée pour, respectivement, deux dents (10i-1, 10i+1) du second pignon (6) adjacentes à ladite dent (10i) du second pignon (6).
- Mécanisme selon la revendication 10, caractérisé en ce que le second pignon (6) est une étoile.
- Mécanisme selon l'une quelconque des revendications 1 à 11, caractérisé en ce qu'un sautoir (9a, 9b) est associé à chacun des premier et second pignons (5, 6).
- Mécanisme selon l'une quelconque des revendications 1 à 12, caractérisé en ce que le mobile (7) comporte des première et seconde couronnes (71, 72) superposées, solidaires l'une de l'autre et portant respectivement les première et seconde dentures intérieures (74, 75).
- Mécanisme selon la revendication 13, caractérisé en ce que le mobile (7) comporte en outre une troisième couronne (70) portant trente et une dents, solidaire des première et seconde couronnes (71, 72), et entraínée pas à pas à raison d'un pas par jour et d'une révolution complète par trente et un jours par un mouvement d'horlogerie.
- Mécanisme selon l'une quelconque des revendications 1 à 14, caractérisé en ce que les premier et second organes indicateurs (2, 3) sont des disques coplanaires et juxtaposés.
- Pièce d'horlogerie comprenant un cadran à grand guichet (4) et un mécanisme selon l'une quelconque des revendications 1 à 15 pour afficher le quantième à travers le grand guichet (4).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH5192003A CH696045A5 (fr) | 2003-03-25 | 2003-03-25 | Mécanisme d'affichage du quantième. |
CH5192003 | 2003-03-25 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1462877A2 true EP1462877A2 (fr) | 2004-09-29 |
EP1462877A3 EP1462877A3 (fr) | 2009-12-02 |
EP1462877B1 EP1462877B1 (fr) | 2012-02-15 |
Family
ID=32778607
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20040003581 Expired - Lifetime EP1462877B1 (fr) | 2003-03-25 | 2004-02-18 | Mécanisme d'affichage du quantième |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1462877B1 (fr) |
CH (1) | CH696045A5 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH700668A1 (de) * | 2009-03-19 | 2010-09-30 | Bucherer Montres S A | Uhr mit einer digitalen datumsanzeige. |
US20200159170A1 (en) * | 2018-11-19 | 2020-05-21 | Eta Sa Manufacture Horlogère Suisse | Mechanical timepiece with an animated display |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2496288A1 (fr) * | 1980-12-11 | 1982-06-18 | Timex Corp | Dispositif de reglage de la date pour montre a aiguilles |
WO1998050829A1 (fr) * | 1997-05-07 | 1998-11-12 | Journe Francois Paul | Systeme mecanique d'indication du quantieme de grand format pour mouvements de montres et pendulettes |
CH689601A5 (fr) * | 1998-03-05 | 1999-06-30 | Piguet Frederic Sa | Mécanisme de quantième pour mouvement d'horlogerie. |
EP1220057A1 (fr) * | 2000-12-22 | 2002-07-03 | Eta SA Fabriques d'Ebauches | Pièce d'horlogerie pourvue d'un quantième à grand guichet |
-
2003
- 2003-03-25 CH CH5192003A patent/CH696045A5/fr not_active IP Right Cessation
-
2004
- 2004-02-18 EP EP20040003581 patent/EP1462877B1/fr not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2496288A1 (fr) * | 1980-12-11 | 1982-06-18 | Timex Corp | Dispositif de reglage de la date pour montre a aiguilles |
WO1998050829A1 (fr) * | 1997-05-07 | 1998-11-12 | Journe Francois Paul | Systeme mecanique d'indication du quantieme de grand format pour mouvements de montres et pendulettes |
CH689601A5 (fr) * | 1998-03-05 | 1999-06-30 | Piguet Frederic Sa | Mécanisme de quantième pour mouvement d'horlogerie. |
EP1220057A1 (fr) * | 2000-12-22 | 2002-07-03 | Eta SA Fabriques d'Ebauches | Pièce d'horlogerie pourvue d'un quantième à grand guichet |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH700668A1 (de) * | 2009-03-19 | 2010-09-30 | Bucherer Montres S A | Uhr mit einer digitalen datumsanzeige. |
JP2010223959A (ja) * | 2009-03-19 | 2010-10-07 | Bucherer Montres Sa | デジタル日付表示部を有する時計 |
EP2230575A3 (fr) * | 2009-03-19 | 2011-09-21 | Bucherer Montres S.A. | Pièce d'horlogerie avec dispositif de quantième digital |
US20200159170A1 (en) * | 2018-11-19 | 2020-05-21 | Eta Sa Manufacture Horlogère Suisse | Mechanical timepiece with an animated display |
US12038724B2 (en) * | 2018-11-19 | 2024-07-16 | Eta Sa Manufacture Horlogère Suisse | Mechanical timepiece with an animated display |
Also Published As
Publication number | Publication date |
---|---|
EP1462877B1 (fr) | 2012-02-15 |
CH696045A5 (fr) | 2006-11-30 |
EP1462877A3 (fr) | 2009-12-02 |
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