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EP2058713B1 - Crown for a timepiece - Google Patents

Crown for a timepiece Download PDF

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Publication number
EP2058713B1
EP2058713B1 EP07120281A EP07120281A EP2058713B1 EP 2058713 B1 EP2058713 B1 EP 2058713B1 EP 07120281 A EP07120281 A EP 07120281A EP 07120281 A EP07120281 A EP 07120281A EP 2058713 B1 EP2058713 B1 EP 2058713B1
Authority
EP
European Patent Office
Prior art keywords
crown
springs
timepiece
ring
cap
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
EP07120281A
Other languages
German (de)
French (fr)
Other versions
EP2058713A1 (en
Inventor
Pierre-Jean Bonnet
Georges Zimmermann
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.)
Meco SA
Original Assignee
Meco SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Meco SA filed Critical Meco SA
Priority to EP07120281A priority Critical patent/EP2058713B1/en
Priority to DE602007004674T priority patent/DE602007004674D1/en
Priority to AT07120281T priority patent/ATE457073T1/en
Priority to TW097138972A priority patent/TW200933319A/en
Priority to US12/249,054 priority patent/US20090122656A1/en
Priority to SG200807882-6A priority patent/SG152188A1/en
Priority to KR1020080107848A priority patent/KR101454030B1/en
Priority to JP2008286252A priority patent/JP5320033B2/en
Priority to CN2008101745798A priority patent/CN101430540B/en
Publication of EP2058713A1 publication Critical patent/EP2058713A1/en
Priority to HK09110151.5A priority patent/HK1132340B/en
Application granted granted Critical
Publication of EP2058713B1 publication Critical patent/EP2058713B1/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
    • G04B3/00—Normal winding of clockworks by hand or mechanically; Winding up several mainsprings or driving weights simultaneously
    • G04B3/04—Rigidly-mounted keys, knobs or crowns
    • G04B3/041—Construction of crowns for rotating movement; connection with the winding stem; winding stems
    • 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
    • G04B3/00—Normal winding of clockworks by hand or mechanically; Winding up several mainsprings or driving weights simultaneously
    • G04B3/06—Keys or the like with means preventing overwinding
    • 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
    • G04B3/00—Normal winding of clockworks by hand or mechanically; Winding up several mainsprings or driving weights simultaneously
    • G04B3/04—Rigidly-mounted keys, knobs or crowns
    • 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
    • G04B3/00—Normal winding of clockworks by hand or mechanically; Winding up several mainsprings or driving weights simultaneously
    • G04B3/04—Rigidly-mounted keys, knobs or crowns
    • G04B3/048—Operation exclusively by axial movement of a push-button, e.g. for chronographs
    • 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
    • G04B45/00—Time pieces of which the indicating means or cases provoke special effects, e.g. aesthetic effects
    • G04B45/02—Time pieces of which the clockwork is visible partly or wholly

Definitions

  • the present invention relates to a crown, for example, for a winding stem or a push-button of a timepiece. More specifically, the present invention relates to such a crown providing an innovative and attractive aesthetic effect.
  • a crown of the above-mentioned kind is known for example from the European patent application EP 1 586 960 in the name of the Claimant. It is a crown for a timepiece including a disengagement device.
  • This ring comprises a hollow cylindrical housing inside which are arranged a barrel on which is fixed a winding stem and a member capable of elastically deforming and cooperating in rotation with a rigid element of the notched ring type. This cooperation in rotation is ensured as long as the torque transmitted by the notched ring to the elastically deformable element remains below a predetermined threshold. When this threshold is exceeded, a disengagement phenomenon is observed between said notched ring and said elastically deformable element. In other words, there is no longer transmission of the torque between the notched ring and the elastic element. The crown then rotates in the vacuum and its rotational movement is not transmitted to the winding stem.
  • the structure of the crown briefly described above is that of a disengageable crown. Its purpose is to avoid damaging the mechanism of a timepiece, especially in the case where the user tries to reassemble the mechanism of his watch while the barrel spring is fully armed.
  • the elastically deformable element is constituted by a spring comprising a central base of general shape close to that of a square and from which extend four elastically deformable arms.
  • Each of the elastic arms comprises two successive portions, namely a first short portion extending from the central base in a substantially radial direction before presenting a bend substantially at right angles, and a second substantially rectilinear portion in the extension of the first portion, following the bent portion.
  • the geometry of the flat spring element described above obeys, above all, the physical and mechanical principles which determine the efficiency, of the transmission of the torque between the notched ring and said spring element as well as the threshold above beyond which we observe the disengagement between these two elements. Nevertheless, it is clear that, due to its geometry and symmetrical character, the spring element is not devoid of a certain aesthetic appearance.
  • the patent document US 4,623,262 discloses a timepiece having a transparent element visible from the outside such as ice, this ice being fixed around the middle of the watch by a high temperature weld.
  • the ice receives an adherent coating ensuring the attachment of an outer layer of welding material at high temperature.
  • the ice receives a second adhering coating ensuring the attachment of an outer decorative layer.
  • the patent document CH 684453 describes a crown or a pusher for a watch provided with a transparent stone.
  • the crown or watch pusher is totally opaque. It receives a transparent stone fixed by crimping or gluing and having a flat face facing said crown. This flat face is provided with a graphics formed by metallization.
  • the present invention relates to a crown for a timepiece, this crown comprising a cap extended by a skirt which delimits a housing, said ring being characterized in that a lid at least partially transparent is mounted in the cap, this cover revealing all or part of a device disposed in the housing of the crown.
  • the present invention provides a crown, for example for a winding stem or a push-button a timepiece, which reveals in front of the user the device housed in the inner volume of the crown.
  • This device may be, for example, a disengaging mechanism as described above. It could however simply be a decorative plate bearing, for example, the distinctive sign of the timepiece mark or any other fancy decor.
  • the clutch mechanism the user will be able to see all the details and fineness of the parts and even observe the operation of this mechanism.
  • the present invention thus provides a new type of crown having an attractive and innovative aesthetic appearance.
  • the present invention proceeds from the general inventive idea of making visible to the user a device housed in the interior volume of a crown, for example for a winding stem or a push button of a piece of watchmaking.
  • the device housed in the crown may be a disengagement mechanism of a winding stem with a resilient member of the flat spring type and a notched ring on its inner periphery. It may also be a plate bearing the distinctive sign of the timepiece mark or any other decorative motif. To achieve this result, it is planned to climb into the head of the crown a lid at least partially transparent and showing all or part of the device housed in the inner volume of the crown. Thanks to this construction, the timepiece equipped with one or more crowns and / or pushbuttons according to the invention has an attractive and innovative aesthetic appearance.
  • a ring according to the teachings of the present invention is shown in longitudinal section on the figure 1 .
  • the ring 1 has a generally cylindrical shape. It goes without saying, however, that the crown 1 can deviate from the elliptical section of the revolution forms to adopt any other general external shape with a square, octagonal or other polyhedral section.
  • the crown 1 consists essentially of a cap 2 delimited downwards by a circular skirt 4 which delimits a hollow inner housing 6.
  • the cap 2 and the circular skirt 4 are made of a piece .
  • the skirt 4 On its outer periphery, the skirt 4 has a plurality of grooves 8 intended to facilitate the operation of the crown 1 by the user.
  • the ring 1 In its hollow inner housing 6, the ring 1 has a circular shoulder 10. This shoulder 10 has two functions. On the one hand, it delimits a bearing surface 12 for a cover 14 housed in an opening 16 made in the cap 2 of the crown 1. In accordance with the invention, this cover 14 is at least partially transparent to make apparent a device 18 housed in the hollow inner volume 6 of the crown 1. In the example shown in the drawing, the cover 14 is formed by a glass mounted in the opening 16 with the interposition of a seal 20.
  • the other function of the shoulder 10 is to serve as an abutment surface 22 for the device 18 housed in the hollow inner volume 6 of the crown 1.
  • this device 18 is, in this case, constituted by a disengaging mechanism 24 which aims to protect the movement of the timepiece by preventing the user from cocking the mainspring beyond a predetermined limit value.
  • the disengaging mechanism 24 comprises one and, preferably, two identical superposed springs 26.
  • two identical springs 26 are provided in order to reach the thickness necessary to obtain the desired rigidity.
  • the two springs 26 cooperate with a ring 28 in a manner to be described hereinafter.
  • the outer diameter of this ring 28 is equal to the inside diameter of the circular skirt 4.
  • the ring 28 On its inner perimeter, the ring 28 has a plurality of notches 30.
  • the disengaging mechanism 24 is completed by a barrel 32 having a threaded hole 34 for mounting a winding stem (not shown).
  • the barrel 32 has a main portion 36 of cylindrical shape surmounted by a head 38 in the form of a disk whose diameter is greater than the diameter of the main portion 36.
  • the head 38 is itself surmounted by a projecting portion 40 whose outline is inscribed inside the perimeter of the head 38 of the barrel 32.
  • the perimeter of the protruding portion 40 is shaped, for example square, and fits into a hole 42, also square, made in the springs 26 , so that when a rotational movement is imparted to said springs 26, these in turn drive the barrel 32 via its protruding portion 40.
  • the shape of the projecting portion 40 and that of the holes 42 may deviate from that of a square and may have any non-circular profile such as, for example, polygonal without departing from the scope of the present invention as long as the driving of said projecting portion 40 by said springs 26 remains possible.
  • the springs 26 bear on the head 38 of the barrel 32 and partly on a circular flange 44 of a sleeve 46 of generally cylindrical shape.
  • the sleeve 46 has a through hole 48 which opens into a bore 50 of the same shape and dimensions as the head 38 of the barrel 32 and which defines the circular flange 44 on which the springs 26 bear.
  • the through hole 48 locally has a reduction in diameter 52, its diameter passing from a value D1 greater than the outside diameter, of a tube 54 to a value D2 less than D1 and greater than the outside diameter of the main portion 36 the barrel 32.
  • the sleeve 46 has an outer peripheral groove 56 in which is housed a seal 58 and an inner peripheral groove 60 in which is housed a seal 62.
  • the seal 58 its function is to guarantee the seal between the bushing 46 and the hollow inner housing 6 of the ring 1, while the seal 62 seals between said bushing 46 and the tube 54.
  • the mounting of the crown according to the invention takes place in the following manner.
  • the barrel 32 is first engaged in the bushing 46 until the head 38 of said barrel 32 is received in the bore 50 of said bushing 46.
  • the springs 26 are then engaged on the projecting portion 40 of the barrel 32, then, it comes to screw a screw 64 in a threaded hole 66 formed in the head 38 of the barrel 32 and which can extend into the main portion 36 of the barrel 32. Note that the springs 26 are held between the head 38 of the barrel 32 and the head 68 of the screw 64.
  • the toothed ring 28 is placed in the hollow inner housing 6 of the ring 1 by any appropriate means such as driving, welding or other to obtain a rigid connection between these two parts.
  • the assembly formed by the barrel 32, the bushing 46, the springs 26 and the screw 64 is then engaged in the hollow inner housing 6 of the crown 1.
  • the bushing 46 is secured to the crown 1 by any appropriate means such as driving, welding, bonding or shoreline as indicated in 70.
  • the ice 14 and its seal 20 can then be mounted on the ring 1.
  • the winding stem is screwed into the threaded hole 34 made in the barrel 32.
  • the whole is mounted on the timepiece via the tube 54 which is fixed by any appropriate technique such as driving, screwing or gluing on the middle part of the timepiece.
  • This tube 54 makes it possible to connect the ring 1 according to the invention to the mechanism of the timepiece that said ring 1 must actuate.
  • the operation of the ring 1 is as follows.
  • the user rotates the ring 1, he drives the notched ring 28 which itself drives the springs 26.
  • the drive of the springs 26 through the ring 28 can be single or bidirectional clockwise or counterclockwise.
  • the springs 26 rotate the barrel 32 and thus the threaded rod (not shown) integral with the barrel.
  • the torque exerted by the ring 1 on the springs 26 exceeds a predetermined threshold, the springs 26 are deformed elastically so that the notched ring 28 is disengaged and no longer grips on said springs 26.
  • the ring 1 thus turns empty so that its subsequent actuation has no effect on the movement of the timepiece and in particular on the mainspring, which avoids any risk of deterioration of this movement.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Adornments (AREA)
  • Electromechanical Clocks (AREA)
  • Measurement Of Predetermined Time Intervals (AREA)
  • Medicines Containing Plant Substances (AREA)
  • Saccharide Compounds (AREA)

Abstract

The crown (1) has a cap (2) extended by a circular skirt (4) defining a hollow inner housing (6), and a partially transparent cover (14) i.e. glass, mounted in an opening (16) of the cap. The cover reveals the entire or a part of a clutch-releasing device (18) arranged in the housing, where the device serves as a decorative plate and is provided with a clutch-releasing mechanism (24). The mechanism has flat springs (26) cooperated with a notched ring (28) that is provided with a non-circular shaped hole (42). The spring is maintained by a screw (64) that is screwed in a threaded hole (66).

Description

La présente invention concerne une couronne, par exemple, pour une tige de remontoir ou un bouton-poussoir d'une pièce d'horlogerie. Plus précisément, la présente invention concerne une telle couronne procurant un effet esthétique innovant et attractif.The present invention relates to a crown, for example, for a winding stem or a push-button of a timepiece. More specifically, the present invention relates to such a crown providing an innovative and attractive aesthetic effect.

Une couronne du genre susmentionné est connue par exemple de la demande de brevet européen EP 1 586 960 au nom de la Demanderesse. Il s'agit d'une couronne pour pièce d'horlogerie comprenant un dispositif de débrayage. Cette couronne comprend un logement cylindrique creux à l'intérieur duquel sont disposés un canon sur lequel vient se fixer une tige de remontoir et un élément capable de se déformer élastiquement et coopérant en rotation avec un élément rigide du type anneau cranté. Cette coopération en rotation est assurée tant que le couple transmis par l'anneau cranté à l'élément élastiquement déformable reste inférieur à un seuil prédéterminé. Lorsque ce seuil est dépassé, on observe un phénomène de débrayage entre ledit anneau cranté et ledit élément élastiquement déformable. Autrement dit, il n'y a plus transmission du couple de rotation entre l'anneau cranté et l'élément élastique. La couronne tourne alors dans le vide et son mouvement de rotation n'est pas transmis à la tige de remontoir.A crown of the above-mentioned kind is known for example from the European patent application EP 1 586 960 in the name of the Claimant. It is a crown for a timepiece including a disengagement device. This ring comprises a hollow cylindrical housing inside which are arranged a barrel on which is fixed a winding stem and a member capable of elastically deforming and cooperating in rotation with a rigid element of the notched ring type. This cooperation in rotation is ensured as long as the torque transmitted by the notched ring to the elastically deformable element remains below a predetermined threshold. When this threshold is exceeded, a disengagement phenomenon is observed between said notched ring and said elastically deformable element. In other words, there is no longer transmission of the torque between the notched ring and the elastic element. The crown then rotates in the vacuum and its rotational movement is not transmitted to the winding stem.

La structure de la couronne brièvement décrite ci-dessus est celle d'une couronne débrayable. Elle a pour vocation d'éviter d'endommager le mécanisme d'une pièce d'horlogerie notamment dans le cas où l'utilisateur tente de remonter le mécanisme de sa montre alors que le ressort de barillet est complètement armé.The structure of the crown briefly described above is that of a disengageable crown. Its purpose is to avoid damaging the mechanism of a timepiece, especially in the case where the user tries to reassemble the mechanism of his watch while the barrel spring is fully armed.

Dans un des modes de réalisation de la couronne décrit dans la demande de brevet européen susmentionnée, l'élément élastiquement déformable est constitué par un ressort comprenant une base centrale de forme générale proche de celle d'un carré et à partir de laquelle s'étendent quatre bras déformables de manière élastique. Chacun des bras élastiques comprend deux portions successives à savoir une première portion courte s'étendant à partir de la base centrale suivant une direction sensiblement radiale avant de présenter un coude sensiblement à angle droit, et une seconde portion sensiblement rectiligne dans le prolongement de la première portion, à la suite de la partie coudée.In one of the embodiments of the crown described in the aforementioned European patent application, the elastically deformable element is constituted by a spring comprising a central base of general shape close to that of a square and from which extend four elastically deformable arms. Each of the elastic arms comprises two successive portions, namely a first short portion extending from the central base in a substantially radial direction before presenting a bend substantially at right angles, and a second substantially rectilinear portion in the extension of the first portion, following the bent portion.

Bien entendu, la géométrie de l'élément ressort plat décrite ci-avant obéit avant tout à des principes physiques et mécaniques qui déterminent l'efficacité, de la transmission du couple entre l'anneau cranté et ledit élément ressort ainsi que le seuil au-delà duquel on observe le débrayage entre ces deux éléments. Néanmoins, force est de constater que, de par sa géométrie et son caractère symétrique, l'élément ressort n'est pas dénué d'un certain aspect esthétique.Of course, the geometry of the flat spring element described above obeys, above all, the physical and mechanical principles which determine the efficiency, of the transmission of the torque between the notched ring and said spring element as well as the threshold above beyond which we observe the disengagement between these two elements. Nevertheless, it is clear that, due to its geometry and symmetrical character, the spring element is not devoid of a certain aesthetic appearance.

C'est cet aspect esthétique que l'auteur de l'invention objet de la présente demande de brevet a voulu révéler au regard de l'utilisateur de la montre.It is this aesthetic aspect that the author of the invention object of the present patent application wanted to reveal with regard to the user of the watch.

Le document de brevet US 4,623,262 décrit une pièce d'horlogerie comportant un élément transparent visible de l'extérieur tel qu'une glace, cette glace étant fixée sur son pourtour à la carrure de la montre par une soudure à haute température. A cet effet, la glace reçoit un revêtement adhérant assurant l'accrochage d'une couche extérieure de matériau de soudure à haute température. Pour masquer, les liaisons par soudure à haute température, la glace reçoit un deuxième revêtement adhérant assurant l'accrochage d'une couche extérieure de décoration.The patent document US 4,623,262 discloses a timepiece having a transparent element visible from the outside such as ice, this ice being fixed around the middle of the watch by a high temperature weld. For this purpose, the ice receives an adherent coating ensuring the attachment of an outer layer of welding material at high temperature. In order to mask the connections by welding at high temperature, the ice receives a second adhering coating ensuring the attachment of an outer decorative layer.

Le document de brevet CH 684453 décrit une couronne ou un poussoir pour une montre munie d'une pierre transparente. La couronne ou poussoir de montre est totalement opaque. Elle reçoit une pierre transparente fixée par sertissage ou collage et présentant une face plane tournée vers ladite couronne. Cette face plane est munie d'un graphisme formé par métallisation.The patent document CH 684453 describes a crown or a pusher for a watch provided with a transparent stone. The crown or watch pusher is totally opaque. It receives a transparent stone fixed by crimping or gluing and having a flat face facing said crown. This flat face is provided with a graphics formed by metallization.

A cet effet, la présente invention concerne une couronne pour pièce d'horlogerie, cette couronne comportant une coiffe prolongée par une jupe qui délimite un logement, ladite couronne étant caractérisée en ce qu'un couvercle au moins partiellement transparent est monté dans la coiffe, ce couvercle laissant apparaître tout ou partie d'un dispositif disposé dans le logement de la couronne.For this purpose, the present invention relates to a crown for a timepiece, this crown comprising a cap extended by a skirt which delimits a housing, said ring being characterized in that a lid at least partially transparent is mounted in the cap, this cover revealing all or part of a device disposed in the housing of the crown.

Grâce à ces caractéristiques, la présente invention procure une couronne, par exemple pour une tige de remontoir ou un bouton-poussoir d'une pièce d'horlogerie, qui laisse apparaître au regard de l'utilisateur le dispositif logé dans le volume intérieur de la couronne. Ce dispositif peut-être, par exemple, un mécanisme de débrayage comme décrit ci-dessus. Il pourrait cependant simplement s'agir d'une plaque décorative portant, par exemple, le signe distinctif de la marque de la pièce d'horlogerie ou tout autre décor de fantaisie. Dans le cas du mécanisme de débrayage, l'utilisateur pourra voir tous les détails et la finesse des pièces et même observer le fonctionnement de ce mécanisme. La présente invention procure ainsi un nouveau type de couronne présentant un aspect esthétique attractif et innovant.Thanks to these features, the present invention provides a crown, for example for a winding stem or a push-button a timepiece, which reveals in front of the user the device housed in the inner volume of the crown. This device may be, for example, a disengaging mechanism as described above. It could however simply be a decorative plate bearing, for example, the distinctive sign of the timepiece mark or any other fancy decor. In the case of the clutch mechanism, the user will be able to see all the details and fineness of the parts and even observe the operation of this mechanism. The present invention thus provides a new type of crown having an attractive and innovative aesthetic appearance.

D'autres caractéristiques et avantages de la présente invention ressortiront plus clairement de la description détaillée qui suit d'un mode de réalisation de la couronne 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 coupe longitudinale d'une couronne pour pièce d'horlogerie selon l'invention ;
  • la figure 2 est une vue de dessus de la couronne représentée à la figure 1, et
  • la figure 3 est une vue en perspective de la couronne selon l'invention.
Other features and advantages of the present invention will emerge more clearly from the following detailed description of an embodiment of the ring according to the invention, this example being given for purely illustrative and non-limiting purposes only in connection with the drawing. annexed in which:
  • the figure 1 is a longitudinal sectional view of a crown for a timepiece according to the invention;
  • the figure 2 is a top view of the crown shown in the figure 1 , and
  • the figure 3 is a perspective view of the crown according to the invention.

La présente invention procède de l'idée générale inventive qui consiste à rendre visible au regard de l'utilisateur un dispositif logé dans le volume intérieur d'une couronne, par exemple pour une tige de remontoir ou un bouton-poussoir d'une pièce d'horlogerie. Le dispositif logé dans la couronne peut être un mécanisme de débrayage d'une tige de remontoir avec un élément élastique du type ressort plat et un anneau cranté sur sa périphérie interne. Il peut également s'agir d'une plaque portant le signe distinctif de la marque de la pièce d'horlogerie ou tout autre motif décoratif. Pour atteindre ce résultat, il est prévu de monter dans la tête de la couronne un couvercle au moins partiellement transparent et laissant voir tout ou partie du dispositif logé dans le volume intérieur de la couronne. Grâce à cette construction, la pièce d'horlogerie équipée d'une ou plusieurs couronnes et/ou boutons-poussoirs selon l'invention présente un aspect esthétique attractif et innovant.The present invention proceeds from the general inventive idea of making visible to the user a device housed in the interior volume of a crown, for example for a winding stem or a push button of a piece of watchmaking. The device housed in the crown may be a disengagement mechanism of a winding stem with a resilient member of the flat spring type and a notched ring on its inner periphery. It may also be a plate bearing the distinctive sign of the timepiece mark or any other decorative motif. To achieve this result, it is planned to climb into the head of the crown a lid at least partially transparent and showing all or part of the device housed in the inner volume of the crown. Thanks to this construction, the timepiece equipped with one or more crowns and / or pushbuttons according to the invention has an attractive and innovative aesthetic appearance.

Désigné dans son ensemble par la référence numérique générale 1, une couronne conforme aux enseignements de la présente invention est représentée en coupe longitudinale sur la figure 1. Telle que représentée à la figure 1, la couronne 1 présente une forme générale cylindrique. Il va néanmoins de soi que la couronne 1 peut s'écarter des formes de révolution à section elliptique pour adopter toute autre forme générale extérieure à section polyédrique carrée, octogonale ou autre.Designated as a whole by the general reference numeral 1, a ring according to the teachings of the present invention is shown in longitudinal section on the figure 1 . As represented in figure 1 , the ring 1 has a generally cylindrical shape. It goes without saying, however, that the crown 1 can deviate from the elliptical section of the revolution forms to adopt any other general external shape with a square, octagonal or other polyhedral section.

La couronne 1 se compose essentiellement d'une coiffe 2 délimitée vers le bas par une jupe circulaire 4 qui délimite un logement intérieur creux 6. Dans l'exemple représenté au dessin, la coiffe 2 et la jupe circulaire 4 sont faites d'une pièce. Bien entendu, on pourrait également envisager de réaliser ces deux pièces séparément l'une de l'autre puis de les assembler par tout moyen approprié.The crown 1 consists essentially of a cap 2 delimited downwards by a circular skirt 4 which delimits a hollow inner housing 6. In the example shown in the drawing, the cap 2 and the circular skirt 4 are made of a piece . Of course, one could also consider making these two parts separately from one another and to assemble by any appropriate means.

Sur sa périphérie extérieure, la jupe 4 présente une pluralité de cannelures 8 destinées à faciliter la manoeuvre de la couronne 1 par l'utilisateur. Dans son logement intérieur creux 6, la couronne 1 présente un épaulement circulaire 10. Cet épaulement 10 a deux fonctions. D'une part, il délimite une surface d'appui 12 pour un couvercle 14 logé dans une ouverture 16 pratiquée dans la coiffe 2 de la couronne 1. Conformément à l'invention, ce couvercle 14 est au moins partiellement transparent pour rendre apparent un dispositif 18 logé dans le volume intérieur creux 6 de la couronne 1. Dans l'exemple représenté au dessin, le couvercle 14 est formé par un verre monté dans l'ouverture 16 avec interposition d'un joint d'étanchéité 20.On its outer periphery, the skirt 4 has a plurality of grooves 8 intended to facilitate the operation of the crown 1 by the user. In its hollow inner housing 6, the ring 1 has a circular shoulder 10. This shoulder 10 has two functions. On the one hand, it delimits a bearing surface 12 for a cover 14 housed in an opening 16 made in the cap 2 of the crown 1. In accordance with the invention, this cover 14 is at least partially transparent to make apparent a device 18 housed in the hollow inner volume 6 of the crown 1. In the example shown in the drawing, the cover 14 is formed by a glass mounted in the opening 16 with the interposition of a seal 20.

L'autre fonction de l'épaulement 10 est de servir de surface de butée 22 au dispositif 18 logé dans le volume intérieur creux 6 de la couronne 1. Comme il ressort de la figure 1 et mieux encore de la figure 2, ce dispositif 18 est, dans le cas présent, constitué par un mécanisme de débrayage 24 qui a pour but de protéger le mouvement de la pièce d'horlogerie en empêchant l'utilisateur d'armer le ressort de barillet au-delà d'une valeur limite prédéterminée.The other function of the shoulder 10 is to serve as an abutment surface 22 for the device 18 housed in the hollow inner volume 6 of the crown 1. As can be seen from FIG. figure 1 and even better figure 2 , this device 18 is, in this case, constituted by a disengaging mechanism 24 which aims to protect the movement of the timepiece by preventing the user from cocking the mainspring beyond a predetermined limit value.

A cet effet, le mécanisme de débrayage 24 comprend un et, préférentiellement, deux ressorts 26 identiques superposés. On prévoit ici deux ressorts 26 identiques afin d'atteindre l'épaisseur nécessaire à l'obtention de la rigidité souhaitée.For this purpose, the disengaging mechanism 24 comprises one and, preferably, two identical superposed springs 26. Here two identical springs 26 are provided in order to reach the thickness necessary to obtain the desired rigidity.

Les deux ressorts 26 coopèrent avec un anneau 28 d'une manière qui sera décrite ci-après. Le diamètre extérieur de cet anneau 28 est égal au diamètre intérieur de la jupe circulaire 4. Sur son périmètre intérieur, l'anneau 28 présente une pluralité de crans 30.The two springs 26 cooperate with a ring 28 in a manner to be described hereinafter. The outer diameter of this ring 28 is equal to the inside diameter of the circular skirt 4. On its inner perimeter, the ring 28 has a plurality of notches 30.

Comme on peut le constater à l'examen de la figure 2, l'anneau cranté 28 et les deux ressorts 26 sont disposés dans le fond de la couronne 1, en appui contre la surface de butée 22 matérialisés, par l'épaulement circulaire 10. Le mécanisme de débrayage 24 est complété par un canon 32 présentant un trou fileté 34 pour le montage d'une tige de remontoir (non représentée). Le canon 32 présente une partie principale 36 de forme cylindrique surmontée par une tête 38 en forme de disque dont le diamètre est supérieur au diamètre de la partie principale 36. La tête 38 est elle-même surmontée d'une portion saillante 40 dont le contour s'inscrit à l'intérieur du périmètre de la tête 38 du canon 32. Plus précisément, le périmètre de la portion saillante 40 est de forme par exemple carrée et s'inscrit dans un trou 42, également carré, pratiqué dans les ressorts 26, de sorte que lorsqu'un mouvement de rotation est imprimé auxdits ressorts 26, ceux-ci entraînent à leur tour le canon 32 via sa portion en saillie 40. Bien entendu, la forme de la portion saillante 40 et de celle des trous 42 peut s'écarter de celle d'un carré et peut présenter un profil non circulaire quelconque tel que, par exemple, polygonale sans sortir du cadre de la présente invention pour peu que l'entraînement de ladite portion saillante 40 par lesdits ressorts 26 reste possible.As can be seen from the examination of the figure 2 , the notched ring 28 and the two springs 26 are arranged in the bottom of the ring 1, bearing against the abutment surface 22 materialized, by the circular shoulder 10. The disengaging mechanism 24 is completed by a barrel 32 having a threaded hole 34 for mounting a winding stem (not shown). The barrel 32 has a main portion 36 of cylindrical shape surmounted by a head 38 in the form of a disk whose diameter is greater than the diameter of the main portion 36. The head 38 is itself surmounted by a projecting portion 40 whose outline is inscribed inside the perimeter of the head 38 of the barrel 32. More specifically, the perimeter of the protruding portion 40 is shaped, for example square, and fits into a hole 42, also square, made in the springs 26 , so that when a rotational movement is imparted to said springs 26, these in turn drive the barrel 32 via its protruding portion 40. Of course, the shape of the projecting portion 40 and that of the holes 42 may deviate from that of a square and may have any non-circular profile such as, for example, polygonal without departing from the scope of the present invention as long as the driving of said projecting portion 40 by said springs 26 remains possible.

Comme il ressort de la figure 1, les ressorts 26 prennent appui sur la tête 38 du canon 32 et pour partie sur un rebord circulaire 44 d'une douille 46 de forme générale cylindrique. Plus précisément, la douille 46 présente un trou traversant 48 qui débouche dans un alésage 50 de mêmes formes et dimensions que la tête 38 du canon 32 et qui délimite le rebord circulaire 44 sur lequel les ressorts 26 prennent appui.As is apparent from the figure 1 , the springs 26 bear on the head 38 of the barrel 32 and partly on a circular flange 44 of a sleeve 46 of generally cylindrical shape. Specifically, the sleeve 46 has a through hole 48 which opens into a bore 50 of the same shape and dimensions as the head 38 of the barrel 32 and which defines the circular flange 44 on which the springs 26 bear.

Par ailleurs, le trou traversant 48 présente localement une réduction de diamètre 52, son diamètre passant d'une valeur D1 supérieure au diamètre extérieur, d'un tube 54 à une valeur D2 inférieure à D1 et supérieure au diamètre extérieur de la partie principale 36 du canon 32. On notera par ailleurs que la douille 46 présente une gorge périphérique extérieure 56 dans laquelle est logé un joint d'étanchéité 58 ainsi qu'une gorge périphérique intérieure 60 dans laquelle est logée un joint d'étanchéité 62. Le joint 58 a pour fonction de garantir l'étanchéité entre la douille 46 et le logement intérieur creux 6 de la couronne 1, tandis que le joint 62 assure l'étanchéité entre ladite douille 46 et le tube 54.Moreover, the through hole 48 locally has a reduction in diameter 52, its diameter passing from a value D1 greater than the outside diameter, of a tube 54 to a value D2 less than D1 and greater than the outside diameter of the main portion 36 the barrel 32. Note also that the sleeve 46 has an outer peripheral groove 56 in which is housed a seal 58 and an inner peripheral groove 60 in which is housed a seal 62. The seal 58 its function is to guarantee the seal between the bushing 46 and the hollow inner housing 6 of the ring 1, while the seal 62 seals between said bushing 46 and the tube 54.

Le montage de la couronne selon l'invention s'opère de la façon suivante. On engage tout d'abord le canon 32 dans la douille 46 jusqu'à ce que la tête 38 dudit canon 32 vienne se loger dans l'alésage 50 de ladite douille 46. On engage ensuite les ressorts 26 sur la partie saillante 40 du canon 32, puis, on vient visser une vis 64 dans un trou fileté 66 pratiqué dans la tête 38 du canon 32 et qui peut se prolonger jusque dans la partie principale 36 de ce canon 32. On notera que les ressorts 26 sont maintenus entre la tête 38 du canon 32 et la tête 68 de la vis 64. On dispose l'anneau cranté 28 dans le logement intérieur creux 6 de la couronne 1 par tout moyen approprié tel que chassage, soudage ou autre afin d'obtenir une liaison rigide entre ces deux pièces. L'ensemble formé par le canon 32, la douille 46, les ressorts 26 et la vis 64 est alors engagé dans le logement intérieur creux 6 de la couronne 1. La douille 46 est rendue solidaire de la couronne 1 par tout moyen approprié tel que chassage, soudage, collage ou rivage comme indiqué en 70. La glace 14 et son joint 20 peuvent alors être montés sur la couronne 1.The mounting of the crown according to the invention takes place in the following manner. The barrel 32 is first engaged in the bushing 46 until the head 38 of said barrel 32 is received in the bore 50 of said bushing 46. The springs 26 are then engaged on the projecting portion 40 of the barrel 32, then, it comes to screw a screw 64 in a threaded hole 66 formed in the head 38 of the barrel 32 and which can extend into the main portion 36 of the barrel 32. Note that the springs 26 are held between the head 38 of the barrel 32 and the head 68 of the screw 64. The toothed ring 28 is placed in the hollow inner housing 6 of the ring 1 by any appropriate means such as driving, welding or other to obtain a rigid connection between these two parts. The assembly formed by the barrel 32, the bushing 46, the springs 26 and the screw 64 is then engaged in the hollow inner housing 6 of the crown 1. The bushing 46 is secured to the crown 1 by any appropriate means such as driving, welding, bonding or shoreline as indicated in 70. The ice 14 and its seal 20 can then be mounted on the ring 1.

Lorsque le montage de la couronne est achevé, on vient visser la tige de remontoir dans le trou fileté 34 pratiqué dans le canon 32. Finalement, on monte le tout sur la pièce d'horlogerie par l'intermédiaire du tube 54 qui est fixé par toute technique appropriée telle que chassage, vissage ou collage sur la carrure de la pièce d'horlogerie. Ce tube 54 permet de relier la couronne 1 selon l'invention au mécanisme de la pièce d'horlogerie que ladite couronne 1 doit actionner.When the mounting of the crown is completed, the winding stem is screwed into the threaded hole 34 made in the barrel 32. Finally, the whole is mounted on the timepiece via the tube 54 which is fixed by any appropriate technique such as driving, screwing or gluing on the middle part of the timepiece. This tube 54 makes it possible to connect the ring 1 according to the invention to the mechanism of the timepiece that said ring 1 must actuate.

Le fonctionnement de la couronne 1 selon l'invention est le suivant. Lorsque l'utilisateur fait tourner la couronne 1, il entraîne l'anneau cranté 28 qui lui-même entraîne les ressorts 26. L'entraînement des ressorts 26 par l'anneau 28 peut être uni- ou bidirectionnel dans le sens horaire ou antihoraire. Pour finir, les ressorts 26 entraînent en rotation le canon 32 et donc la tige filetée (non représentée) solidaire de ce canon. Lorsque le couple exercé par la couronne 1 sur les ressorts 26 excède un seuil prédéterminé, les ressorts 26 se déforment élastiquement de telle sorte que l'anneau cranté 28 est débrayé et n'a plus prise sur lesdits ressorts 26. La couronne 1 tourne ainsi à vide de sorte que son actionnement ultérieur n'a plus d'effet sur le mouvement de la pièce d'horlogerie et en particulier sur le ressort de barillet, ce qui permet d'éviter tout risque de détérioration de ce mouvement.The operation of the ring 1 according to the invention is as follows. When the user rotates the ring 1, he drives the notched ring 28 which itself drives the springs 26. The drive of the springs 26 through the ring 28 can be single or bidirectional clockwise or counterclockwise. Finally, the springs 26 rotate the barrel 32 and thus the threaded rod (not shown) integral with the barrel. When the torque exerted by the ring 1 on the springs 26 exceeds a predetermined threshold, the springs 26 are deformed elastically so that the notched ring 28 is disengaged and no longer grips on said springs 26. The ring 1 thus turns empty so that its subsequent actuation has no effect on the movement of the timepiece and in particular on the mainspring, which avoids any risk of deterioration of this movement.

Comme on peut l'apprécier sur les figures 2 et 3, les ressorts 26 de même que la vis 64 sont visibles par l'utilisateur au travers du verre 14, ce qui confère à la pièce d'horlogerie un caractère esthétique innovant et attractif.As can be appreciated from figures 2 and 3 , the springs 26 as well as the screw 64 are visible to the user through the glass 14, which gives the timepiece an innovative and attractive aesthetic character.

Il va de soi que la présente invention n'est pas limitée au mode de réalisation qui vient d'être décrit et que diverses modifications et variantes simples peuvent être envisagées par l'homme du métier sans sortir du cadre de l'invention tel que défini par les revendications annexées. En particulier, on comprendra que la couronne selon l'invention peut s'appliquer à tous types d'organes de commande extérieurs d'une pièce d'horlogerie tels que correcteurs, boutons-poussoirs, valves ou autres.It goes without saying that the present invention is not limited to the embodiment which has just been described and that various modifications and simple variants can be envisaged by those skilled in the art without departing from the scope of the invention as defined by the appended claims. In particular, it will be understood that the crown according to the invention can be applied to all types of external control members of a timepiece such as correctors, pushbuttons, valves or others.

Claims (9)

  1. Crown for a timepiece, said crown (1) including a cap (2) extended by a skirt (4), which delimits a hollow inner housing (6), said crown (1) being characterized in that an at least partially transparent cover (14) is mounted in the cap (2), said cover (14) revealing all or part of a device (18) arranged in the hollow inner housing (6) of the crown (1).
  2. Crown according to claim 1, characterized in that the cover (14) is mounted in an aperture (16) made in the cap (2) of the crown (1).
  3. Crown according to claim 1, characterized in that the cover (14) is a transparent plate mounted with the insertion of a sealing gasket (20) in the aperture (16).
  4. Crown according to any of claims 1 to 3, characterized in that the device (18) is formed by an uncoupling mechanism (24).
  5. Crown according to claim 4, characterized in that the uncoupling mechanism (24) includes at least one spring (26) cooperating with a ring (28) that has a plurality of notches (30) on the inner periphery thereof.
  6. Crown according to claim 5, characterized in that the spring or springs (26) are maintained by means of a screw (64).
  7. Crown according to claim 6, characterized in that there is a hole (42) of non-circular shape at the centre of the spring or springs (26) via which said springs are engaged onto a projecting portion (40) of complementary shape of a pipe (32) which carries said springs, said screw (64) being screwed into a threaded hole (66) made at least in the projecting portion (40) of the pipe (32).
  8. Crown according to any of claims 1 to 7, characterized in that it is arranged to be applied to an external control member of the timepiece.
  9. Crown according to claim 8, characterized in that the control member is a winding stem or a push-button.
EP07120281A 2007-11-08 2007-11-08 Crown for a timepiece Active EP2058713B1 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
EP07120281A EP2058713B1 (en) 2007-11-08 2007-11-08 Crown for a timepiece
DE602007004674T DE602007004674D1 (en) 2007-11-08 2007-11-08 Crown for clock
AT07120281T ATE457073T1 (en) 2007-11-08 2007-11-08 CROWN FOR WATCH
TW097138972A TW200933319A (en) 2007-11-08 2008-10-09 Crown for timepiece
US12/249,054 US20090122656A1 (en) 2007-11-08 2008-10-10 Crown for timepiece
SG200807882-6A SG152188A1 (en) 2007-11-08 2008-10-15 Crown for timepiece
KR1020080107848A KR101454030B1 (en) 2007-11-08 2008-10-31 Crown for timepiece
JP2008286252A JP5320033B2 (en) 2007-11-08 2008-11-07 Clock crown
CN2008101745798A CN101430540B (en) 2007-11-08 2008-11-10 Crown for a timepiece
HK09110151.5A HK1132340B (en) 2007-11-08 2009-10-30 Crown for timepiece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07120281A EP2058713B1 (en) 2007-11-08 2007-11-08 Crown for a timepiece

Publications (2)

Publication Number Publication Date
EP2058713A1 EP2058713A1 (en) 2009-05-13
EP2058713B1 true EP2058713B1 (en) 2010-02-03

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP07120281A Active EP2058713B1 (en) 2007-11-08 2007-11-08 Crown for a timepiece

Country Status (9)

Country Link
US (1) US20090122656A1 (en)
EP (1) EP2058713B1 (en)
JP (1) JP5320033B2 (en)
KR (1) KR101454030B1 (en)
CN (1) CN101430540B (en)
AT (1) ATE457073T1 (en)
DE (1) DE602007004674D1 (en)
SG (1) SG152188A1 (en)
TW (1) TW200933319A (en)

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Also Published As

Publication number Publication date
CN101430540B (en) 2012-07-18
HK1132340A1 (en) 2010-02-19
US20090122656A1 (en) 2009-05-14
KR101454030B1 (en) 2014-10-27
TW200933319A (en) 2009-08-01
JP5320033B2 (en) 2013-10-23
EP2058713A1 (en) 2009-05-13
DE602007004674D1 (en) 2010-03-25
SG152188A1 (en) 2009-05-29
KR20090048325A (en) 2009-05-13
JP2009115799A (en) 2009-05-28
ATE457073T1 (en) 2010-02-15
CN101430540A (en) 2009-05-13

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