EP1411400A1 - Dispositif de fixation d'un mobile coaxial dans une pièce d'horlogerie, notamment d'un disque indicateur des jours - Google Patents
Dispositif de fixation d'un mobile coaxial dans une pièce d'horlogerie, notamment d'un disque indicateur des jours Download PDFInfo
- Publication number
- EP1411400A1 EP1411400A1 EP02079317A EP02079317A EP1411400A1 EP 1411400 A1 EP1411400 A1 EP 1411400A1 EP 02079317 A EP02079317 A EP 02079317A EP 02079317 A EP02079317 A EP 02079317A EP 1411400 A1 EP1411400 A1 EP 1411400A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mobile
- coaxial
- support member
- central support
- elastic fingers
- 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
- 238000003780 insertion Methods 0.000 claims description 15
- 230000037431 insertion Effects 0.000 claims description 15
- 230000014759 maintenance of location Effects 0.000 claims description 11
- 229920002994 synthetic fiber Polymers 0.000 claims description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 2
- 230000000717 retained effect Effects 0.000 abstract description 3
- 239000007787 solid Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 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
- G04B13/00—Gearwork
- G04B13/02—Wheels; Pinions; Spindles; Pivots
- G04B13/025—Wheels; Pinions; Spindles; Pivots with elastic means between the toothing and the hub of a toothed wheel
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B35/00—Adjusting the gear train, e.g. the backlash of the arbors, depth of meshing of the gears
Definitions
- the present invention relates generally to the mounting of mobiles coaxial, in particular the mounting of indicator discs (e.g. discs day, date, month or similar indicators), in rooms watchmaking.
- the present invention relates more particularly to the mounting of such coaxial mobiles by their center on a central support member, and in particular the mounting of a coaxial mobile on a timer mobile of a timepiece.
- Coaxial mobiles such as indicator discs mounted by their center are commonly retained axially by an additional element, namely a circlip engaged in a groove formed on the periphery of the central support member on which is mounted the disc (typically a shaft, an axis or the barrel of a mobile of timer).
- This circlip is commonly in the form of an open ring or closed with elastic characteristics allowing its insertion into the throat of the central support member.
- Document US 3,659,412 shows for example the fixing of a disc indicator on the barrel of a timer mobile (in this case a wheel of hours) and its axial retention by means of different examples of open circlips or closed.
- the indicator disc is typically attached to a star collaborating with an adequate drive system and that the angular position of the indicator disc is indexed by means of a jumper spring which fits between two teeth of the star.
- the axial retention of the indicator disc on its member central support is achieved by means of an additional element which increases costs of manufacturing the timepiece and involves an assembly step additional consisting of the introduction of the circlip in the corresponding groove of the central support member.
- An object of the present invention is to propose a solution making it possible to get rid of the use of an additional retaining element and consequently reduce manufacturing costs and limit the number of assembly steps for the part watchmaking.
- the present invention thus has for first object a device for fixing a coaxial mobile for a timepiece whose characteristics are set out in the independent claim 1, as well as in independent claim 15.
- the present invention also relates to a timer mobile intended for receive a coaxial mobile whose characteristics are set out in the independent claim 9.
- the coaxial mobile is thus retained axially on its member of support by means of a plurality of elastic fingers.
- elastic fingers make preferably an integral part of the support member.
- these elastic fingers can be provided on the coaxial mobile itself.
- the assembly of the coaxial mobile on its support member is also very simple in the sense that it suffices to introduce the mobile on the support member parallel to its axis, the plurality of elastic fingers deforming radially at the passage of the mobile to return then in place is to ensure the axial retention.
- the figures show a preferred embodiment of a fixing device of a coaxial mobile according to the present invention.
- the fixing illustrated is intended to ensure the fixing and the retention of an indicator disc of the days, generally designated by the numerical reference 2, on the barrel 11 of a wheel 1 hours of a watch movement.
- the movement for a timepiece of the type with a central second is partially visible in the section of FIG. 1 and the plan view of FIG. 2 (note that the sections are taken along the section line A-A shown in Figure 2).
- a gear train 8 and a plate 9 defining a cage in which is the essence of the movement.
- This drive wheel 42 is located typically engaged with a medium pinion (not shown) secured to a medium wheel (not shown) which meshes with the second pinion 31.
- the pavement 4 typically transmits its rotational movement to a mobile timer (not shown) which meshes in its terminal part, on the dial side, with the hour wheel 1 via its timer pinion (not shown).
- the external face of the plate 9 further comprises an annular shoulder 91 serving as a guide radial positioning at the hour wheel 1, itself provided in its base with a corresponding recess to accommodate this shoulder 91.
- the hour wheel 1, freely mounted for rotation on the roadway 4 also incorporates a return 12 of a drive wheel 5 actuating a date disc 6 with teeth interior as well as the day indicator disc 2.
- the day 2 indicator disc has a day star 21 attached to a disc 22 carrying the inscriptions of the days of the week, inscriptions which are typically intended to appear successively in a window of the dial (not shown).
- the disc 22 is not illustrated in the plan view of FIG. 2, only the day star 21 being represented.
- the disc day indicator 2 is typically operated every day (once per 24 hours), around midnight, via the drive wheel 5 at by means of a finger 51 which is integral with it.
- This drive wheel 5 is of a type specific of which a further description can be found in the document EP 0 548 659, also on behalf of the present Applicant.
- the position of the day 2 indicator disc can also be corrected by the through a correction mechanism (typically driven by a crown stem).
- a corrective wheel 25 forming part of this correction mechanism is illustrated in Figures 1 and 2.
- the angular position of the disc day indicator 2 is indexed by means of a jumper spring 72, part of which appears in the section of Figure 1.
- This jumper spring 72 is part of a plate holding 7 which is made integral with the plate 9 and which also incorporates, as illustrated in FIG. 2, a jumper spring 76 for indexing the disc of date 6.
- FIGS 3a and 3b show enlarged views of the cross-section of the Figure 1, respectively during assembly and after assembly of the indicator disc 2 on the barrel 11 of the hour wheel 1.
- Figures 4a and 4b show isometric views of this hour wheel 1 and its barrel 11.
- the barrel 11 of the hour wheel 1 thus carries a plurality, here three, of elastic fingers 15 extending radially outwards from the barrel 11 and intended for ensure axial retention of the indicator disc 2 on the barrel 11.
- These fingers elastic bands 15 are preferably arranged symmetrically around the barrel 11 (in this example at 120 ° from each other).
- the elastic fingers 15 are arranged to be deform elastically inward of the barrel 11 to allow a axial insertion of the indicator disc 2, through its central mounting hole 2a, on the canon 11 of the hour wheel 1.
- Figures 3a and 3b are used to highlight evidence what has just been mentioned. Indeed, as illustrated in Figure 3a, when of the insertion of the indicator disc 2, the day star 21 comes into contact with the end of the fingers 15 so that they are forced to deform radially towards the axis of the hour wheel 1. Once the disc 2 is inserted, as illustrated in the Figure 3b, the fingers 15 return to their rest position to retain axially disc 2 by its star of days 21. In this position, we will understand obviously that the indicator disc 2 is free to rotate around the barrel 11.
- the configuration of the barrel 11 of the wheel of the hours 1, according to the preferred embodiment, is such that this barrel 11 has a end part 11 a intended for the introduction of an hour hand (not shown), a first middle portion 11 b where the elastic fingers are arranged 15, a second middle portion 11c of substantially similar diameter (but lower) than the diameter of the mounting hole 2a of the day 2 indicator disc and around which this indicator disc rests radially, and a bearing 11d on which axially rests the indicator disc for days 2 (this range 11 d is here formed by the face of the reference 12 of the date wheel).
- the second middle part 11c housing the day 2 indicator disc has a plurality of recesses radial 16, in a number equivalent to the number of elastic fingers, formed in positions angularly corresponding to the positions of the elastic fingers 15. From the so, once mounted, the 2 days disc rests directly on the second part middle 11 c, rigid, the elastic fingers 15 returning to their rest position a the indicator disc 2 inserted to ensure its axial retention.
- the elastic fingers 15 extend radially from the barrel 11 over a distance slightly greater than the corresponding radius of the mounting hole 2a of the indicator disc 2 so as to ensure, in the rest position, the axial retention of the disc 2.
- These elastic fingers 15 must moreover be sufficiently flexible so that they deform when the disc is inserted and allow the passage of this latest.
- the radial recesses 16 extend as illustrated towards the base of the hour wheel 1.
- the hour wheel, or generally the central support member of the indicator disc is preferably made in one synthetic material, such as plastic.
- the illustrated configuration of the recesses radials 16 makes it possible to simplify the construction of the mold of the wheel of the hours 1. Note, however, that the use of a plastic material is not compulsory, any material with sufficient elastic characteristics to the desired goal can be used.
- the first middle part 11b of the barrel 11 of the wheel hours 1 further preferably comprises a plurality of radial guides 17 (also three in this example) arranged between the elastic fingers 15 to guide the indicator disc 2 when it is inserted on the hour wheel 1.
- These guides 17 ensure good radial positioning of the indicator disc 2 during its insertion and also protect the elastic fingers 15 of the wheel from hours so that they undergo only minimal deformation when inserting the indicator disc 2.
- these radial guides 17 are arranged so they are the first to come into contact with the indicator disk 2 when it insertion. More precisely, the radial guides 17 as well as the elastic fingers 15 have, in their upper part, a chamfer whose angle differs.
- the angle of the chamfer made on the radial guides 17 is less important (relative to a perpendicular to the axis of insertion of the indicator disc) than the angle of the chamfer on the flexible fingers.
- the disc indicator is first of all guided and centered on the axis by the guides 17 (cf. FIG. 3a) before actually coming into contact with the elastic fingers 15. Others configuration can obviously be considered. Guides 17 can thus simply be placed higher on the barrel 11 of the hour wheel 1.
- the present invention is not limited only to the fixing of a disc of the days and its star on the barrel of a wheel hours, but applies analogously to allow the fixation of any other coaxial mobile to be mounted on a central support member such as a mobile timer or any other support element, whether fixed or mobile.
- a central support member such as a mobile timer or any other support element, whether fixed or mobile.
- the invention is not limited to the attachment of a disc day indicator, but may apply to any other type of indicator disc mounted by its center on a central support member, such as for example a disc of dates, months, or even moon phases.
- the plurality of elastic fingers would extend radially inward from the coaxial mobile (i.e. towards the axis of rotation of the assembly), these elastic fingers being similarly arranged to deform elastically to allow a axial insertion of the coaxial mobile on the central support member and to return to a rest position to ensure axial retention of the coaxial mobile.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromechanical Clocks (AREA)
Abstract
Description
- la figure 1 est une vue en coupe partielle, selon une ligne de coupe A-A, d'un mouvement d'une pièce d'horlogerie montrant un exemple de réalisation préféré d'un dispositif de fixation d'un disque indicateur des jours sur le canon d'une roue des heures ;
- la figure 2 est une vue en plan partielle, côté cadran, du dispositif de fixation illustré dans la figure 1 ;
- la figure 3a est une vue en coupe partielle, analogue à la vue en coupe de la figure 1, illustrant de manière détaillée le dispositif de fixation lors du montage du disque indicateur des jours sur le canon de la roue des heures ;
- la figure 3b est analogue à la figure 3a et illustre le dispositif de fixation après montage du disque indicateur des jours sur le canon de la roue des heures ; et
- les figures 4a et 4b sont deux vues isométriques, respectivement des parties supérieure et inférieure de la roue des heures à canon du mouvement des figures 1 à 3b.
Claims (15)
- Dispositif de fixation d'un mobile pour pièce d'horlogerie comprenant un organe de support central (1, 11) et un mobile coaxial (2) monté libre en rotation sur ledit organe de support central (1, 11),
caractérisé en ce que ledit organe de support central (1, 11) porte une pluralité de doigts élastiques (15) s'étendant radialement vers l'extérieur dudit organe de support central (1, 11 ), chacun desdits doigts élastiques (15) étant agencé pour se déformer de manière élastique pour permettre une insertion axiale dudit mobile coaxial (2) sur ledit organe de support central (1, 11 ) et pour revenir dans une position de repos afin d'assurer une retenue axiale dudit mobile coaxial (2). - Dispositif de fixation selon la revendication 1, caractérisé en ce que ledit organe de support central (1, 11) comporte, dans le sens d'insertion du mobile coaxial, une partie terminale (11a), une première partie médiane (11b) où sont agencés lesdits doigts élastiques, une seconde partie médiane (11c) autour de laquelle repose radialement ledit mobile coaxial (2), et une portée (11d) sur laquelle repose axialement ledit mobile coaxial (2).
- Dispositif de fixation selon la revendication 2, caractérisé en ce que ladite seconde partie médiane (11 c) de l'organe de support central (1, 11) comporte une pluralité d'évidements radiaux (16), en nombre équivalent au nombre de doigts élastiques (15), ménagés dans des positions correspondant radialement aux positions desdits doigts élastiques (15).
- Dispositif de fixation selon la revendication 2, caractérisé en ce que ladite première partie médiane (11 b) de l'organe de support central (1, 11) comporte en outre une pluralité de guides radiaux (17) disposés entre lesdits doigts élastiques (15) pour guider ledit mobile coaxial lors de son insertion sur l'organe de support central (1, 11), ces guides radiaux (17) étant ménagés de sorte qu'ils sont les premiers à rentrer en contact avec le mobile coaxial (2) lors de son insertion.
- Dispositif de fixation selon l'une quelconque des revendications précédentes, caractérisé en ce que lesdits doigts élastiques (15) sont disposés symétriquement autour de l'axe dudit organe de support central (1, 11).
- Dispositif de fixation selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit organe de support central (1, 11) est un mobile de minuterie de la pièce d'horlogerie, telle une roue des heures.
- Dispositif de fixation selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit mobile coaxial (2) est un disque indicateur des jours, des quantièmes, des mois, des phases de lune ou analogue.
- Dispositif de fixation selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit organe de support central (1, 11) est réalisé en un matériau synthétique, tel un plastique.
- Mobile de minuterie (1), notamment roue des heures, pour pièce d'horlogerie pour le montage d'un mobile coaxial (2), tel un disque indicateur, libre en rotation par rapport à ce mobile de minuterie (1), caractérisé en ce que ledit mobile de minuterie comporte un canon (11) portant une pluralité de doigts élastiques (15) s'étendant radialement vers l'extérieur dudit canon (11) et agencés pour se déformer de manière élastique lors d'une insertion axiale dudit mobile coaxial (2) sur le canon (11) et pour revenir dans une position de repos afin d'assurer une retenue axiale dudit mobile coaxial (2).
- Mobile de minuterie selon la revendication 9, caractérisé en ce que ledit canon (11) comporte, dans le sens d'insertion du mobile coaxial (2), une partie terminale (11a) destinée à recevoir une aiguille, une première partie médiane (11b) où sont agencés lesdits doigts élastiques (15), une seconde partie médiane (11c) pour assurer un support radial du mobile coaxial (2), et une portée (11d) pour assurer un support axial du mobile coaxial (2).
- Mobile de minuterie selon la revendication 9, caractérisé en ce que ladite seconde partie médiane (11 c) du canon (11) comporte une pluralité d'évidements radiaux (16), en nombre équivalent au nombre de doigts élastiques (15), ménagés dans des positions correspondant radialement aux positions desdits doigts élastiques (15).
- Mobile de minuterie selon la revendication 9, caractérisé en ce que ladite première partie terminale (11b) du canon (11) comporte en outre une pluralité de guides radiaux (17) disposés entre lesdits doigts élastiques (15) pour guider ledit mobile coaxial (2) lors de son insertion sur le canon, ces guides radiaux (17) étant ménagés de sorte qu'ils sont les premiers à rentrer en contact avec le mobile coaxial (2) lors de son insertion.
- Mobile de minuterie selon l'une quelconque des revendications 9 à 12, caractérisé en ce que lesdits doigts élastiques (15) sont disposés symétriquement autour de l'axe dudit canon (11 ).
- Mobile de minuterie selon l'une quelconque des revendications 9 à 13, caractérisé en ce que ledit canon (11) du mobile de minuterie (1) est réalisé en un matériau synthétique, tel un plastique.
- Dispositif de fixation d'un mobile pour pièce d'horlogerie comprenant un organe de support central (1, 11) et un mobile coaxial (2) monté libre en rotation sur ledit organe de support central (1, 11),
caractérisé en ce que ledit mobile coaxial (2) porte une pluralité de doigts élastiques s'étendant radialement vers l'intérieur dudit mobile coaxial (2), chacun desdits doigts élastiques étant agencé pour se déformer de manière élastique pour permettre une insertion axiale dudit mobile coaxial (2) sur ledit organe de support central (1, 11) et pour revenir dans une position de repos afin d'assurer une retenue axiale dudit mobile coaxial (2).
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE60235015T DE60235015D1 (de) | 2002-10-16 | 2002-10-16 | Befestigungsvorrichtung für ein Koaxialdrehteil in einer Uhr, insbesondere einer Datumanzeigescheibe |
EP20020079317 EP1411400B1 (fr) | 2002-10-16 | 2002-10-16 | Dispositif de fixation d'un mobile coaxial dans une pièce d'horlogerie, notamment d'un disque indicateur des jours |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20020079317 EP1411400B1 (fr) | 2002-10-16 | 2002-10-16 | Dispositif de fixation d'un mobile coaxial dans une pièce d'horlogerie, notamment d'un disque indicateur des jours |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1411400A1 true EP1411400A1 (fr) | 2004-04-21 |
EP1411400B1 EP1411400B1 (fr) | 2010-01-06 |
Family
ID=32039189
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20020079317 Expired - Lifetime EP1411400B1 (fr) | 2002-10-16 | 2002-10-16 | Dispositif de fixation d'un mobile coaxial dans une pièce d'horlogerie, notamment d'un disque indicateur des jours |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1411400B1 (fr) |
DE (1) | DE60235015D1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2317407A1 (fr) * | 2009-10-29 | 2011-05-04 | Nivarox-FAR S.A. | Système de fixation d'une pièce sans chassage ni collage |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3907564A1 (fr) * | 2020-05-05 | 2021-11-10 | ETA SA Manufacture Horlogère Suisse | Élément d'indexation d'horlogerie |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH46864A (fr) * | 1909-05-03 | 1910-04-16 | Graizely & Cie | Dispositif d'ajustement à frottement gras d'un renvoi de transmission sur l'arbre d'un mobile de mouvement d'horlogerie |
US3659412A (en) * | 1969-06-26 | 1972-05-02 | Citizen Watch Co Ltd | Positioner for calendar dial in timepiece |
FR2391502A1 (fr) * | 1977-05-20 | 1978-12-15 | Seiko Instr & Electronics | Mouvement d'horlogerie portatif avec un mecanisme de calendrier |
EP0838735A2 (fr) * | 1992-12-02 | 1998-04-29 | Seiko Epson Corporation | Train d'engrenage pour montre électronique |
-
2002
- 2002-10-16 EP EP20020079317 patent/EP1411400B1/fr not_active Expired - Lifetime
- 2002-10-16 DE DE60235015T patent/DE60235015D1/de not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH46864A (fr) * | 1909-05-03 | 1910-04-16 | Graizely & Cie | Dispositif d'ajustement à frottement gras d'un renvoi de transmission sur l'arbre d'un mobile de mouvement d'horlogerie |
US3659412A (en) * | 1969-06-26 | 1972-05-02 | Citizen Watch Co Ltd | Positioner for calendar dial in timepiece |
FR2391502A1 (fr) * | 1977-05-20 | 1978-12-15 | Seiko Instr & Electronics | Mouvement d'horlogerie portatif avec un mecanisme de calendrier |
EP0838735A2 (fr) * | 1992-12-02 | 1998-04-29 | Seiko Epson Corporation | Train d'engrenage pour montre électronique |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2317407A1 (fr) * | 2009-10-29 | 2011-05-04 | Nivarox-FAR S.A. | Système de fixation d'une pièce sans chassage ni collage |
EP2317406A1 (fr) * | 2009-10-29 | 2011-05-04 | Nivarox-FAR S.A. | Système de fixation d'une pièce sans chassage ni collage |
US8636405B2 (en) | 2009-10-29 | 2014-01-28 | Nivarox-Far S.A. | System for securing a part without driving in or bonding |
Also Published As
Publication number | Publication date |
---|---|
DE60235015D1 (de) | 2010-02-25 |
EP1411400B1 (fr) | 2010-01-06 |
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