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EP1923754B1 - Timepiece movement equipped with a display module - Google Patents

Timepiece movement equipped with a display module Download PDF

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Publication number
EP1923754B1
EP1923754B1 EP06124059A EP06124059A EP1923754B1 EP 1923754 B1 EP1923754 B1 EP 1923754B1 EP 06124059 A EP06124059 A EP 06124059A EP 06124059 A EP06124059 A EP 06124059A EP 1923754 B1 EP1923754 B1 EP 1923754B1
Authority
EP
European Patent Office
Prior art keywords
bridge
timepiece movement
movement according
positioning
display member
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.)
Active
Application number
EP06124059A
Other languages
German (de)
French (fr)
Other versions
EP1923754A1 (en
Inventor
Loïc Pellaton
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ETA SA Manufacture Horlogere Suisse
Original Assignee
ETA SA Manufacture Horlogere Suisse
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ETA SA Manufacture Horlogere Suisse filed Critical ETA SA Manufacture Horlogere Suisse
Priority to AT06124059T priority Critical patent/ATE445868T1/en
Priority to EP06124059A priority patent/EP1923754B1/en
Priority to DE602006009829T priority patent/DE602006009829D1/en
Priority to JP2007292742A priority patent/JP5188149B2/en
Priority to CN200710159622.9A priority patent/CN101226373B/en
Priority to US11/939,845 priority patent/US7791983B2/en
Publication of EP1923754A1 publication Critical patent/EP1923754A1/en
Priority to HK09100301.5A priority patent/HK1123104B/en
Application granted granted Critical
Publication of EP1923754B1 publication Critical patent/EP1923754B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • G04B29/00—Frameworks
    • G04B29/02—Plates; Bridges; Cocks
    • G04B29/022—Bridges

Definitions

  • the present invention relates to the field of watchmaking. More specifically, it relates to a clockwork movement equipped with a display module comprising a central bridge and an annular-type display member mounted to rotate substantially around the bridge. The invention also relates to a timepiece equipped with such a movement and a display module.
  • Clock movements of the type mentioned above equip, for example, date watches.
  • These comprise a box in which is fixed a support, such as a plate, and a display module formed of a central bridge fixed to said plate, a date ring, a driving member, and a positioning member of the date ring.
  • the module further comprises, optionally, a date correction device.
  • the drive member is rotatably mounted on the bridge, while the date ring is mounted bearing on the plate, free to rotate around the bridge.
  • the positioning member occupies a housing provided for this purpose on the bridge.
  • the axial positioning of these different elements, in the opposite direction to the plate, is generally provided by a holding plate screwed to the bridge, and extending above it and partially above the date ring.
  • An example of such a plate is given in the document GB 1 471 678 .
  • the holding plate adapted in shape and size to the display module, is formed by stamping and folding. Its manufacturing cost is high because the stamp used for its cutting is itself very expensive. In addition, its assembly is very expensive because it is one of the final operations of the assembly of the timepiece, and it is known that the final operations have a cost considerably higher than the initial or intermediate operations.
  • the invention overcomes the cost problems mentioned above, since it relates to a watchmaking movement free of holding plate.
  • the invention relates to a watch movement according to claim 1, which comprises bearing and positioning surfaces, the display member being held axially on the support without the aid of a holding plate. , similar to the solution revealed in the document EP0131858 of the plaintiff.
  • the bridge further comprises three positioning surfaces, and three assembly surfaces, offset axially and angularly with respect to the positioning surfaces; the display member comprises, in turn, three pins.
  • the contact surface, the positioning surfaces, the assembly surfaces, and the pins are arranged to form together a bayonet assembly system for mounting the display member on the bridge.
  • the display member is assembled to the bridge independently of the fixed support, so as to form a pre-assembled display module.
  • the invention also relates to a display module, and a timepiece comprising a movement equipped with such a display module.
  • the timepiece represented in figure 1 conventionally comprises a box 12 formed of a middle 14, a bottom 16 and a mirror 17, together defining a housing 18 in which takes place a movement 20, and a dial 21 interposed between the ice 17 and the movement 20.
  • the movement 20 is shown in section in figure 2 . It comprises a fixed support 23, such as a plate, on which are mounted the members of a basic movement 22 shown schematically, on the figures 1 and 2 , by a block integral with said plate. It further comprises a display module 24 mounted on the upper face of the plate 23. The upper face is the face facing the dial 21, and the lower face the opposite face. Fixing the plate 23 to the box 12 is not represented on the figures 1 and 2 but it can be carried out using screws, flanges, a casing ring or any other means known to those skilled in the art.
  • the plate 23 is provided on its upper face with a circular thread 25, whose function will be specified later.
  • the display module 24 conventionally comprises a substantially circular central bridge 26, and a display ring 28 of axis AA, coaxial with the bridge 26, on which are affixed time indications, such as calendars, days of the week, or even moon phases.
  • the bridge 26 is fixed rigidly to the plate 23 with screws not shown on the figures 1 and 2 .
  • the display ring 28 is mounted free to rotate about the bridge 26, resting on the plate 23.
  • it is provided with a substantially cylindrical portion 29 forming a bearing surface 31 cooperating with the thread 25 in order to limit the friction associated with its rotational movement.
  • the cylindrical portion 29 is provided with a toothing 30 located on its inner side, intended to drive the ring 28 in rotation.
  • the module display 24 also optionally comprises a correction device, not shown, preferably mounted on the underside of the bridge 26.
  • the display ring 28 is provided, on the side of its inside diameter, with an annular portion 35 extending radially above the toothing 30, and forming a contact surface 37 facing the dial. 21.
  • the bridge 26 is, for its part, provided with three protuberances 38 distributed angularly around its periphery, and extending radially above the contact surface 37. Said protuberances 38 form three positioning surfaces 40 cooperating with the surface of contact 37 so as to axially position the display ring 28 on the plate 23.
  • the ring 28 is thus free to rotate and held axially in one direction by the plate 23, and in the other direction, by the protuberances 38.
  • the drive wheel 32 and the jumper 34 are held axially on the bridge 26, by means well known to those skilled in the art, not shown in FIG. figure 1 . It will be noted, for example, that if the bridge 26 is made of plastic material, by injection, the drive wheel 32 and the jumper 34 are advantageously locked axially by heat-sealing. Alternatively, if the bridge 26 is conventionally made of metal, by machining, the drive wheel 32 and the jumper 34 are blocked, optionally, by a screw or tenon.
  • the bridge 26 is, furthermore, provided with three shoulders 42 constituted by annular portions angularly and axially offset relative to the protuberances 38, and forming three joining surfaces 44, facing the dial 21.
  • the axial offset between the shoulders 42 and the protuberances 38 is slightly greater than the thickness of the annular portion 35.
  • the display ring 28 is, on its side, provided with three lugs 46 extending radially in the extension of the annular portion 35, in the direction of the axis AA.
  • the annular portion assembly 35 - protuberances 38 - shoulders 42 - lugs 46 form a bayonet assembly system, part of which consists of the shoulders 42 and the lugs 46, has no function within the timepiece 10 mounted, but is intended for mounting the ring 28 on the bridge 26, to form a display module 24 pre-assembled. It will be noted that the flanks of the shoulders 42 form, in addition, a rotational guiding surface 48 of the ring 28, cooperating with the end of the toothing 30.
  • the pre-assembly of the display module 24 is carried out as follows.
  • the drive wheel 32 and the jumper 34 are positioned on the bridge 26 and held axially by the aforementioned means.
  • the display ring 28 is mounted on the bridge 26 by the bayonet system.
  • the lugs 46 are brought facing the protuberances 38, then the ring 28 is rotated so as to bring the lugs 46 opposite the shoulders 42.
  • the contact surface 37 cooperates with the positioning surfaces 40, and the lugs 46 cooperate with the assembly surfaces 44.
  • the ring 28 is positioned axially relative to the bridge 26.
  • the display module 24 thus pre-assembled is shown in FIG. figure 3 .
  • the pre-assembly operation of the display module 24 is easy and independent of that of mounting the basic movement 22 of the timepiece 10. It facilitates its transport, and its storage compared to a module in parts , and can be done well in advance of the final assembly, at lower costs.
  • the module 24 may, for example, be pre-assembled in a first factory and transported to a second factory where it will be stored before being mounted on the basic movement 22. The assembly of the pre-assembled module is then simply carried out. by screwing the bridge 26 on the plate 23. Once the display module 24 mounted on the base movement 22, the ring 28 rests on the thread 25 of the plate 23. The shoulders 42 and the lugs 46 no longer contribute axial positioning of the ring 28 relative to the bridge 26, the plate 23 itself ensuring this function.
  • FIG 4 illustrating a timepiece outside the claimed invention.
  • the shoulders 42 and the lugs 46 are respectively absent from the bridge 26 and from the ring 28.
  • the display module 24 is therefore free of the bayonet connection system of the ring 28 on the bridge 26. which can not be preassembled, the module 24 is mounted piece by piece on the basic movement 22.
  • the ring 28 is firstly arranged on the plate 23, then, the bridge 26 is screwed to the plate 23.
  • the drive wheel 32 and the jumper 34 are then mounted on the bridge 26.
  • the axial retention of the ring 28 in the direction of the dial 21 is achieved by the protuberances 38 which cooperate with the annular portion 35.
  • the drive members 32 and positioning 34 are axially locked by the means described above.
  • This simplified variant of a timepiece eliminates the holding plate, but excludes the pre-assembly of the display module 24.
  • the rotation guide of the ring 28 is provided by the outer side of the bridge 26, which forms a guide surface 50 cooperating with the inner side of the annular portion 35.
  • the bridge 26 may be provided with two protuberances 38, or even a single protuberance extending over a large angular sector.
  • the bridge 26 can assume a geometry other than circular, for example substantially triangular, without its functionality being affected.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Electric Clocks (AREA)

Abstract

The movement (20) has a display module (24) with a central bridge (26) that is secured to a support (23), and an annular display ring (28) with an axis (A) that freely rotates about the bridge and contacts the support. The bridge has at least one positioning surface that cooperates with the contact surface (37) of the display ring to position the display ring axially on the support.

Description

La présente invention se rapporte au domaine de l'horlogerie. Elle concerne plus précisément un mouvement d'horlogerie équipé d'un module d'affichage comprenant un pont central et un organe d'affichage de type annulaire monté libre en rotation sensiblement autour du pont. L'invention concerne également une pièce d'horlogerie équipée d'un tel mouvement et un module d'affichage.The present invention relates to the field of watchmaking. More specifically, it relates to a clockwork movement equipped with a display module comprising a central bridge and an annular-type display member mounted to rotate substantially around the bridge. The invention also relates to a timepiece equipped with such a movement and a display module.

Des mouvements d'horlogerie du type mentionné précédemment équipent, par exemple, des montres quantièmes. Celles-ci comportent une boîte dans laquelle est fixé un support, tel qu'une platine, et un module d'affichage formé d'un pont central fixé à ladite platine, d'un anneau de quantième, d'un organe entraîneur, et d'un organe de positionnement de l'anneau de quantième. Le module comporte, en outre, de façon optionnelle, un dispositif de correction du quantième.Clock movements of the type mentioned above equip, for example, date watches. These comprise a box in which is fixed a support, such as a plate, and a display module formed of a central bridge fixed to said plate, a date ring, a driving member, and a positioning member of the date ring. The module further comprises, optionally, a date correction device.

De manière classique, l'organe entraîneur est monté libre en rotation sur le pont, tandis que l'anneau de quantième est monté en appui sur la platine, libre en rotation autour du pont. L'organe de positionnement occupe un logement prévu à cet effet sur le pont. Le positionnement axial de ces différents éléments, dans la direction opposée à la platine, est généralement assuré par une plaque de maintien vissée au pont, et s'étendant au dessus de celui-ci et partiellement au dessus de l'anneau de quantième. Un exemple d'une telle plaque est donné dans le document GB 1 471 678 . La plaque de maintien, adaptée dans sa forme et dans ses dimensions au module d'affichage, est formée par étampage et pliage. Son coût de fabrication est élevé car l'étampe utilisée pour sa découpe est elle-même très coûteuse. De plus, son montage revient très cher car il constitue une des opérations finales du montage de la pièce d'horlogerie, et il est connu que les opérations finales ont un coût de revient considérablement plus élevé que les opérations initiales ou intermédiaires.Conventionally, the drive member is rotatably mounted on the bridge, while the date ring is mounted bearing on the plate, free to rotate around the bridge. The positioning member occupies a housing provided for this purpose on the bridge. The axial positioning of these different elements, in the opposite direction to the plate, is generally provided by a holding plate screwed to the bridge, and extending above it and partially above the date ring. An example of such a plate is given in the document GB 1 471 678 . The holding plate, adapted in shape and size to the display module, is formed by stamping and folding. Its manufacturing cost is high because the stamp used for its cutting is itself very expensive. In addition, its assembly is very expensive because it is one of the final operations of the assembly of the timepiece, and it is known that the final operations have a cost considerably higher than the initial or intermediate operations.

L'invention permet de pallier les problèmes de coûts mentionnés ci-dessus, puisqu'elle se rapporte à un mouvement d'horlogerie exempt de plaque de maintien.The invention overcomes the cost problems mentioned above, since it relates to a watchmaking movement free of holding plate.

Plus précisément, l'invention concerne un mouvement d'horlogerie selon la revendication 1, qui comprend des surfaces d'appui et de positionnement, l'organe d'affichage étant maintenu axialement sur le support sans l'aide d'une plaque de maintien, similairement à la solution révélée dans le document EP0131858 de la demanderesse. Le pont comporte toutefois en outre trois surfaces de positionnement, et trois surfaces d'assemblage, décalées axialement et angulairement par rapport aux surfaces de positionnement; l'organe d'affichage comporte, quant à lui, en outre, trois ergots. La surface de contact, les surfaces de positionnement, d'assemblage, et les ergots sont agencés de manière à former ensemble un système d'assemblage à baïonnette destiné au montage de l'organe d'affichage sur le pont.More specifically, the invention relates to a watch movement according to claim 1, which comprises bearing and positioning surfaces, the display member being held axially on the support without the aid of a holding plate. , similar to the solution revealed in the document EP0131858 of the plaintiff. The bridge, however, further comprises three positioning surfaces, and three assembly surfaces, offset axially and angularly with respect to the positioning surfaces; the display member comprises, in turn, three pins. The contact surface, the positioning surfaces, the assembly surfaces, and the pins are arranged to form together a bayonet assembly system for mounting the display member on the bridge.

Grâce à ce système d'assemblage à baïonnette, l'organe d'affichage est assemblé au pont indépendamment du support fixe, de manière à former un module d'affichage pré-assemblé.With this bayonet assembly system, the display member is assembled to the bridge independently of the fixed support, so as to form a pre-assembled display module.

L'invention concerne également un module d'affichage, et une pièce d'horlogerie comportant un mouvement équipé d'un tel module d'affichage.The invention also relates to a display module, and a timepiece comprising a movement equipped with such a display module.

D'autres caractéristiques et avantages de la présente invention ressortiront plus clairement de la description détaillée qui suit d'un exemple de réalisation d'une pièce d'horlogerie selon l'invention, cet exemple étant donné à titre purement illustratif et non limitatif seulement, en liaison avec le dessin annexé sur lequel :

  • la figure 1 est une vue en perspective éclatée d'un premier mode de réalisation d'une pièce d'horlogerie selon l'invention,
  • la figure 2 est une vue en coupe partielle d'un mouvement équipant cette pièce d'horlogerie,
  • la figure 3 est une vue en perspective d'un module d'affichage assemblé, monté sur ce mouvement, et
  • la figure 4 est une vue en perspective éclatée d'une pièce d'horlogerie.
Other features and advantages of the present invention will emerge more clearly from the detailed description which follows of an exemplary embodiment of a timepiece according to the invention, this example being given for purely illustrative and nonlimiting purposes only, in conjunction with the accompanying drawing in which:
  • the figure 1 is an exploded perspective view of a first embodiment of a timepiece according to the invention,
  • the figure 2 is a partial sectional view of a movement equipping this timepiece,
  • the figure 3 is a perspective view of an assembled display module, mounted on this movement, and
  • the figure 4 is an exploded perspective view of a timepiece.

La pièce d'horlogerie représentée en figure 1, et désignée par la référence générale 10, comporte classiquement une boite 12 formée d'une carrure 14, d'un fond 16 et d'une glace 17, définissant ensemble un logement 18 dans lequel prend place un mouvement 20, et un cadran 21 interposé entre la glace 17 et le mouvement 20.The timepiece represented in figure 1 , and designated by the general reference 10, conventionally comprises a box 12 formed of a middle 14, a bottom 16 and a mirror 17, together defining a housing 18 in which takes place a movement 20, and a dial 21 interposed between the ice 17 and the movement 20.

Le mouvement 20 est représenté en coupe en figure 2. Il comprend un support fixe 23, tel qu'une platine, sur lequel sont montés les organes d'un mouvement de base 22 représenté schématiquement, sur les figures 1 et 2, par un bloc solidaire de ladite platine. Il comprend, en outre, un module d'affichage 24 monté sur la face supérieure de la platine 23. Par face supérieure, on entend la face dirigée vers le cadran 21, et par face inférieure, la face opposée. La fixation de la platine 23 à la boîte 12 n'est pas représentée sur les figures 1 et 2, mais elle peut être réalisée à l'aide de vis, de brides, d'un cercle d'emboîtage ou tout autre moyen connu de l'homme de métier. La platine 23 est munie, en sa face supérieure, d'un filet circulaire 25, dont la fonction sera précisée ultérieurement.The movement 20 is shown in section in figure 2 . It comprises a fixed support 23, such as a plate, on which are mounted the members of a basic movement 22 shown schematically, on the figures 1 and 2 , by a block integral with said plate. It further comprises a display module 24 mounted on the upper face of the plate 23. The upper face is the face facing the dial 21, and the lower face the opposite face. Fixing the plate 23 to the box 12 is not represented on the figures 1 and 2 but it can be carried out using screws, flanges, a casing ring or any other means known to those skilled in the art. The plate 23 is provided on its upper face with a circular thread 25, whose function will be specified later.

Le module d'affichage 24 comprend classiquement un pont central 26 sensiblement circulaire, et un anneau d'affichage 28 d'axe AA, coaxial au pont 26, sur lequel sont apposées des indications de temps, telles que des quantièmes, des jours de la semaine, ou même des phases de lune. Le pont 26 est fixé rigidement à la platine 23 à l'aide de vis non représentées sur les figures 1 et 2. L'anneau d'affichage 28 est monté libre en rotation autour du pont 26, en appui sur la platine 23. A cet effet, il est doté d'une portion sensiblement cylindrique 29 formant une surface d'appui 31 coopérant avec le filet 25 de manière à limiter les frottements liés à son mouvement de rotation. La portion cylindrique 29 est munie d'une denture 30 située sur son flanc intérieur, destinée à l'entraînement en rotation de l'anneau 28. Une roue d'entraînement 32, montée libre en rotation sur le pont 26 et tirant sa force motrice d'une chaîne cinématique entraînée par le mouvement de base 22, coopère avec la denture 30. Un sautoir 34, disposé dans un logement 36 prévu à cet effet sur le pont 26, est destiné au positionnement angulaire de l'anneau 28. Le module d'affichage 24 comporte encore, de façon optionnelle, un dispositif de correction non représenté, monté de préférence sur la face inférieure du pont 26.The display module 24 conventionally comprises a substantially circular central bridge 26, and a display ring 28 of axis AA, coaxial with the bridge 26, on which are affixed time indications, such as calendars, days of the week, or even moon phases. The bridge 26 is fixed rigidly to the plate 23 with screws not shown on the figures 1 and 2 . The display ring 28 is mounted free to rotate about the bridge 26, resting on the plate 23. For this purpose, it is provided with a substantially cylindrical portion 29 forming a bearing surface 31 cooperating with the thread 25 in order to limit the friction associated with its rotational movement. The cylindrical portion 29 is provided with a toothing 30 located on its inner side, intended to drive the ring 28 in rotation. A drive wheel 32 mounted to rotate freely on the bridge 26 and pulling its driving force of a kinematic chain driven by the base movement 22, cooperates with the toothing 30. A jumper 34, disposed in a housing 36 provided for this purpose on the bridge 26, is intended for the angular positioning of the ring 28. The module display 24 also optionally comprises a correction device, not shown, preferably mounted on the underside of the bridge 26.

Selon l'invention, l'anneau d'affichage 28 est muni, du côté de son diamètre intérieur, d'une portion annulaire 35 s'étendant radialement au dessus de la denture 30, et formant une surface de contact 37 orientée vers le cadran 21. Le pont 26 est, de son côté, doté de trois protubérances 38 réparties angulairement à sa périphérie, et s'étendant radialement au dessus de la surface de contact 37. Lesdites protubérances 38 forment trois surfaces de positionnement 40 coopérant avec la surface de contact 37 de manière à positionner axialement l'anneau d'affichage 28 sur la platine 23. L'anneau 28 est ainsi libre en rotation et maintenu axialement, dans un sens par la platine 23, et dans l'autre sens, par les protubérances 38.According to the invention, the display ring 28 is provided, on the side of its inside diameter, with an annular portion 35 extending radially above the toothing 30, and forming a contact surface 37 facing the dial. 21. The bridge 26 is, for its part, provided with three protuberances 38 distributed angularly around its periphery, and extending radially above the contact surface 37. Said protuberances 38 form three positioning surfaces 40 cooperating with the surface of contact 37 so as to axially position the display ring 28 on the plate 23. The ring 28 is thus free to rotate and held axially in one direction by the plate 23, and in the other direction, by the protuberances 38.

La roue d'entraînement 32 et le sautoir 34 sont maintenus axialement sur le pont 26, par des moyens bien connus de l'homme de métier, non représentés en figure 1. On notera, par exemple, que si le pont 26 est réalisé en matériau plastique, par injection, la roue d'entraînement 32 et le sautoir 34 sont avantageusement bloqués axialement par thermo-soudage. En variante, si le pont 26 est réalisé classiquement en métal, par usinage, la roue d'entraînement 32 et le sautoir 34 sont bloqués, au choix, par une vis ou un tenon.The drive wheel 32 and the jumper 34 are held axially on the bridge 26, by means well known to those skilled in the art, not shown in FIG. figure 1 . It will be noted, for example, that if the bridge 26 is made of plastic material, by injection, the drive wheel 32 and the jumper 34 are advantageously locked axially by heat-sealing. Alternatively, if the bridge 26 is conventionally made of metal, by machining, the drive wheel 32 and the jumper 34 are blocked, optionally, by a screw or tenon.

Le pont 26 est, en outre, muni de trois épaulements 42 constitués par des portions annulaires décalées angulairement et axialement par rapport aux protubérances 38, et formant trois surfaces d'assemblage 44, orientées vers le cadran 21. Pour des raisons qui apparaîtront ultérieurement, le décalage axial entre les épaulements 42 et les protubérances 38 est très légèrement supérieur à l'épaisseur de la portion annulaire 35. L'anneau d'affichage 28 est, de son côté, muni de trois ergots 46 s'étendant radialement dans le prolongement de la portion annulaire 35, en direction de l'axe AA. L'ensemble portion annulaire 35 - protubérances 38 - épaulements 42 - ergots 46 forme un système d'assemblage à baïonnette dont une partie constituée par les épaulements 42 et les ergots 46, n'a pas de fonctionnalité au sein de la pièce d'horlogerie 10 montée, mais est destiné au montage de l'anneau 28 sur le pont 26, en vue de constituer un module d'affichage 24 pré-assemblé. On notera que les flancs des épaulements 42 forment, en outre, une surface de guidage en rotation 48 de l'anneau 28, coopérant avec l'extrémité de la denture 30.The bridge 26 is, furthermore, provided with three shoulders 42 constituted by annular portions angularly and axially offset relative to the protuberances 38, and forming three joining surfaces 44, facing the dial 21. For reasons which will appear later, the axial offset between the shoulders 42 and the protuberances 38 is slightly greater than the thickness of the annular portion 35. The display ring 28 is, on its side, provided with three lugs 46 extending radially in the extension of the annular portion 35, in the direction of the axis AA. The annular portion assembly 35 - protuberances 38 - shoulders 42 - lugs 46 form a bayonet assembly system, part of which consists of the shoulders 42 and the lugs 46, has no function within the timepiece 10 mounted, but is intended for mounting the ring 28 on the bridge 26, to form a display module 24 pre-assembled. It will be noted that the flanks of the shoulders 42 form, in addition, a rotational guiding surface 48 of the ring 28, cooperating with the end of the toothing 30.

Le pré-assemblage du module d'affichage 24 s'effectue de la façon suivante. La roue d'entraînement 32 et le sautoir 34 sont positionnés sur le pont 26 et maintenus axialement par les moyens mentionnés précédemment. L'anneau d'affichage 28 est monté sur le pont 26 grâce au système à baïonnette. A cet effet, les ergots 46 sont amenés en regard des protubérances 38, puis l'anneau 28 est tourné de manière à amener les ergots 46 en regard des épaulements 42. Dans cette position angulaire, et du fait que la portion annulaire 35 est adaptée en épaisseur à la distance axiale entre les protubérances 38 et les épaulements 42, la surface de contact 37 coopère avec les surfaces de positionnement 40, et les ergots 46 coopèrent avec les surfaces d'assemblage 44. Il en résulte que l'anneau 28 est positionné axialement, relativement au pont 26. Le module d'affichage 24 ainsi pré-assemblé est représenté en figure 3.The pre-assembly of the display module 24 is carried out as follows. The drive wheel 32 and the jumper 34 are positioned on the bridge 26 and held axially by the aforementioned means. The display ring 28 is mounted on the bridge 26 by the bayonet system. For this purpose, the lugs 46 are brought facing the protuberances 38, then the ring 28 is rotated so as to bring the lugs 46 opposite the shoulders 42. In this angular position, and the fact that the annular portion 35 is adapted in thickness at the axial distance between the protuberances 38 and the shoulders 42, the contact surface 37 cooperates with the positioning surfaces 40, and the lugs 46 cooperate with the assembly surfaces 44. As a result, the ring 28 is positioned axially relative to the bridge 26. The display module 24 thus pre-assembled is shown in FIG. figure 3 .

L'opération de pré-assemblage du module d'affichage 24 est aisée et indépendante de celle de montage du mouvement de base 22 de la pièce d'horlogerie 10. Elle facilite son transport, et son stockage par rapport à un module en pièces détachées, et peut être réalisée bien en amont du montage final, à des coûts moins élevés. Le module 24 peut, par exemple, être pré-assemblé dans une première usine et transporté dans une deuxième usine où il sera stocké avant d'être monté sur le mouvement de base 22. Le montage du module pré-assemblé est ensuite effectué simplement, par vissage du pont 26 sur la platine 23. Une fois le module d'affichage 24 monté sur le mouvement de base 22, l'anneau 28 repose sur le filet 25 de la platine 23. Les épaulements 42 et les ergots 46 ne contribuent plus au positionnement axial de l'anneau 28 par rapport au pont 26, la platine 23 assurant elle-même cette fonction.The pre-assembly operation of the display module 24 is easy and independent of that of mounting the basic movement 22 of the timepiece 10. It facilitates its transport, and its storage compared to a module in parts , and can be done well in advance of the final assembly, at lower costs. The module 24 may, for example, be pre-assembled in a first factory and transported to a second factory where it will be stored before being mounted on the basic movement 22. The assembly of the pre-assembled module is then simply carried out. by screwing the bridge 26 on the plate 23. Once the display module 24 mounted on the base movement 22, the ring 28 rests on the thread 25 of the plate 23. The shoulders 42 and the lugs 46 no longer contribute axial positioning of the ring 28 relative to the bridge 26, the plate 23 itself ensuring this function.

On se réfère maintenant à la figure 4, illustrant une pièce d'horlogerie en dehors de l'invention revendiquée. Les épaulements 42 et les ergots 46 sont absents respectivement du pont 26 et de l'anneau 28. Le module d'affichage 24, est, par conséquent exempt de système d'assemblage à baïonnette de l'anneau 28 sur le pont 26. Ne pouvant pas être préassemblé, le module 24 se monte pièce par pièce sur le mouvement de base 22. L'anneau 28 est tout d'abord disposé sur la platine 23, puis, le pont 26 est vissé à la platine 23. La roue d'entraînement 32 et le sautoir 34 sont ensuite montés sur le pont 26. Comme précédemment, le maintien axial de l'anneau 28 en direction du cadran 21, est réalisé par les protubérances 38 qui coopèrent avec la portion annulaire 35. De même, les organes d'entraînement 32 et de positionnement 34, sont bloqués axialement par les moyens décrits précédemment. Cette variante simplifiée d'une pièce d'horlogerie permet d'éliminer la plaque de maintien, mais exclut le pré-assemblage du module d'affichage 24. On notera que dans ce mode de réalisation, le guidage en rotation de l'anneau 28, est assuré par le flanc extérieur du pont 26, qui forme une surface de guidage 50 coopérant avec le flanc intérieur de la portion annulaire 35.We now refer to the figure 4 , illustrating a timepiece outside the claimed invention. The shoulders 42 and the lugs 46 are respectively absent from the bridge 26 and from the ring 28. The display module 24 is therefore free of the bayonet connection system of the ring 28 on the bridge 26. which can not be preassembled, the module 24 is mounted piece by piece on the basic movement 22. The ring 28 is firstly arranged on the plate 23, then, the bridge 26 is screwed to the plate 23. The drive wheel 32 and the jumper 34 are then mounted on the bridge 26. As previously, the axial retention of the ring 28 in the direction of the dial 21, is achieved by the protuberances 38 which cooperate with the annular portion 35. Similarly, the drive members 32 and positioning 34 are axially locked by the means described above. This simplified variant of a timepiece eliminates the holding plate, but excludes the pre-assembly of the display module 24. Note that in this embodiment, the rotation guide of the ring 28 , is provided by the outer side of the bridge 26, which forms a guide surface 50 cooperating with the inner side of the annular portion 35.

Il va de soi que la présente invention n'est pas limitée aux modes de réalisations qui viennent d'être décrits, et que diverses modifications et variantes simples peuvent être envisagées par l'homme de métier, sans sortir du cadre de la présente invention telle que définie par les revendications annexées.It goes without saying that the present invention is not limited to the embodiments which have just been described, and that various simple modifications and variants can be envisaged by those skilled in the art, without departing from the scope of the present invention such as as defined by the appended claims.

Dans un exemple en dehors de l'invention telle que revendiquée, le pont 26 peut être doté de deux protubérances 38, ou même d'une unique protubérance s'étendant sur un secteur angulaire important.In an example outside the invention as claimed, the bridge 26 may be provided with two protuberances 38, or even a single protuberance extending over a large angular sector.

On comprendra également, que le pont 26 peut prendre une géométrie autre que circulaire, par exemple sensiblement triangulaire, sans que sa fonctionnalité en soit affectée.It will also be understood that the bridge 26 can assume a geometry other than circular, for example substantially triangular, without its functionality being affected.

Claims (11)

  1. Timepiece movement of the type including a fixed support (23), fitted with a display module (24) including a central bridge (26) secured to said support (23) and an annular display member (28) with an axis AA, mounted to rotate freely substantially about said bridge (26), abutting on said support (23), said display member (28) including a contact surface (37), said bridge (26) including three positioning surfaces (40), formed by three protruding portions (38), cooperating with said contact surface (37) so as to position said display member (28) axially on said support (23), wherein said bridge (26) is characterized in that it includes again three assembly surfaces (44) shifted axially and angularly relative to the positioning surfaces (40), and in that said display member (28) includes three lugs (46), wherein said contact surface (37), said positioning, assembly surfaces (40,44) and said lugs (46) are arranged so as to form together a bayonet assembly system meant for assembling the display member 28 on the bridge 26.
  2. Timepiece movement according to claim 1, characterized in that said contact surface (37) is formed by an annular portion (35) and in that said protruding portions (38) extend above said annular portion (35).
  3. Timepiece movement according to claim 1, characterized in that said three assembly surfaces (44) are formed by three shoulders (42) axially and angularly shifted relative to the three protruding portions (38).
  4. Timepiece movement according to claim 3, characterized in that the axial shift between said shoulders (42) and said protruding portions (38) is slightly greater than the thickness of the annular portion (35).
  5. Timepiece movement according to claim 1 to 4, characterized in that said bridge (26) includes a rotational guide surface (48, 50) for the display member (28).
  6. Timepiece movement according to claim 3 and 5, characterized in that said rotational guide surface (48) is formed by the flank of said shoulders (42).
  7. Timepiece movement according to claims 1 and 5, characterized in that said rotational guide surface (50) is formed by the external flank of said bridge (26).
  8. Timepiece movement according to claim 1 to 7, characterized in that said display module (24) further includes a drive member (32) and a positioning member (34) for the display member (28), mounted on said bridge (26).
  9. Timepiece movement according to claim 8, characterized in that said drive (32) and positioning (34) members are locked axially by thermowelding.
  10. Timepiece movement according to claim 8, characterized in that said drive (32) and positioning (34) members are locked axially by a pin provided with a shoulder.
  11. Timepice provided with a movement according to any of the claims 1 to 10.
EP06124059A 2006-11-14 2006-11-14 Timepiece movement equipped with a display module Active EP1923754B1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
AT06124059T ATE445868T1 (en) 2006-11-14 2006-11-14 CLOCK EQUIPPED WITH A DISPLAY MODULE
EP06124059A EP1923754B1 (en) 2006-11-14 2006-11-14 Timepiece movement equipped with a display module
DE602006009829T DE602006009829D1 (en) 2006-11-14 2006-11-14 Clockwork equipped with a display module
JP2007292742A JP5188149B2 (en) 2006-11-14 2007-11-12 Clock movement with display module
CN200710159622.9A CN101226373B (en) 2006-11-14 2007-11-13 Timepiece movement equipped with a display module
US11/939,845 US7791983B2 (en) 2006-11-14 2007-11-14 Timepiece movement fitted with a display module
HK09100301.5A HK1123104B (en) 2006-11-14 2009-01-12 Timepiece movement fitted with a display module

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06124059A EP1923754B1 (en) 2006-11-14 2006-11-14 Timepiece movement equipped with a display module

Publications (2)

Publication Number Publication Date
EP1923754A1 EP1923754A1 (en) 2008-05-21
EP1923754B1 true EP1923754B1 (en) 2009-10-14

Family

ID=37496463

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06124059A Active EP1923754B1 (en) 2006-11-14 2006-11-14 Timepiece movement equipped with a display module

Country Status (6)

Country Link
US (1) US7791983B2 (en)
EP (1) EP1923754B1 (en)
JP (1) JP5188149B2 (en)
CN (1) CN101226373B (en)
AT (1) ATE445868T1 (en)
DE (1) DE602006009829D1 (en)

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Publication number Priority date Publication date Assignee Title
CN102540855A (en) * 2010-11-25 2012-07-04 Eta瑞士钟表制造股份有限公司 Device for positioning a bridge on a plate

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EP2442191B1 (en) * 2010-10-18 2014-12-31 ETA SA Manufacture Horlogère Suisse Timepiece with modular analogue display
JP5502705B2 (en) * 2010-11-17 2014-05-28 セイコーインスツル株式会社 clock
EP2605087B1 (en) * 2011-12-13 2017-07-26 ETA SA Manufacture Horlogère Suisse Modular clock assembly with functional modules
EP2787399B1 (en) * 2011-12-13 2015-07-29 ETA SA Manufacture Horlogère Suisse Modular clock movement with functional modules
KR102110034B1 (en) * 2018-05-21 2020-05-12 이세현 Module-Type Wristwatch

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CH609825B (en) * 1976-08-09 Ebauches Bettlach Sa WATCH MOVEMENT WHOSE FRAME INCLUDES A HOLDING PLATE.
DE2855898C2 (en) * 1978-12-23 1981-02-12 Gebrueder Junghans Gmbh, 7230 Schramberg Clock, in particular wristwatch, with date and weekday displays
US4428682A (en) * 1982-09-29 1984-01-31 Winter Munroe A Clock mechanism
CH649888GA3 (en) * 1983-07-08 1985-06-28
CH680325B5 (en) * 1991-02-25 1993-02-15 Ebauchesfabrik Eta Ag
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TW442714B (en) * 1999-08-24 2001-06-23 Ebauchesfabrik Eta Ag Timepiece movement
TW505830B (en) * 2001-04-03 2002-10-11 Ebauchesfabrik Eta Ag Timepiece movement
ATE518168T1 (en) * 2003-01-07 2011-08-15 Eta Sa Mft Horlogere Suisse CALENDAR MECHANISM FOR REPRESENTING THE DAY OF THE WEEK AND THE DAY OF THE MONTH IN A WATCH
CH700720B1 (en) * 2003-06-23 2010-10-15 Ronda Ag Gear for watch movement and date display mechanism provided with such a gear.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102540855A (en) * 2010-11-25 2012-07-04 Eta瑞士钟表制造股份有限公司 Device for positioning a bridge on a plate
CN102540855B (en) * 2010-11-25 2015-08-19 Eta瑞士钟表制造股份有限公司 For locating the equipment of bridge clamping plate on machine plate

Also Published As

Publication number Publication date
DE602006009829D1 (en) 2009-11-26
US20080112273A1 (en) 2008-05-15
HK1123104A1 (en) 2009-06-05
EP1923754A1 (en) 2008-05-21
JP2008122386A (en) 2008-05-29
US7791983B2 (en) 2010-09-07
ATE445868T1 (en) 2009-10-15
CN101226373B (en) 2014-06-25
CN101226373A (en) 2008-07-23
JP5188149B2 (en) 2013-04-24

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