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EP2385432A2 - Watch-case - Google Patents

Watch-case Download PDF

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Publication number
EP2385432A2
EP2385432A2 EP20100405173 EP10405173A EP2385432A2 EP 2385432 A2 EP2385432 A2 EP 2385432A2 EP 20100405173 EP20100405173 EP 20100405173 EP 10405173 A EP10405173 A EP 10405173A EP 2385432 A2 EP2385432 A2 EP 2385432A2
Authority
EP
European Patent Office
Prior art keywords
thread
tube
ring
face
crown
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.)
Withdrawn
Application number
EP20100405173
Other languages
German (de)
French (fr)
Inventor
Julien Cattaneo
Daniel Moille
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.)
Rolex SA
Original Assignee
Rolex 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 Rolex SA filed Critical Rolex SA
Priority to EP20100405173 priority Critical patent/EP2385432A2/en
Priority to PCT/CH2011/000094 priority patent/WO2011137544A2/en
Priority to JP2013508342A priority patent/JP5744184B2/en
Priority to US13/643,462 priority patent/US8882342B2/en
Priority to EP11722285.1A priority patent/EP2567292B1/en
Priority to CH00728/11A priority patent/CH703089B1/en
Priority to CN201180022439.9A priority patent/CN102971679B/en
Publication of EP2385432A2 publication Critical patent/EP2385432A2/en
Withdrawn legal-status Critical Current

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Classifications

    • GPHYSICS
    • G04HOROLOGY
    • G04BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B37/00Cases
    • G04B37/08Hermetic sealing of openings, joints, passages or slits
    • G04B37/10Hermetic sealing of openings, joints, passages or slits of winding stems
    • G04B37/103Hermetic sealing of openings, joints, passages or slits of winding stems by screwing the crown onto the case

Definitions

  • the present invention relates to a watch case comprising a caseband, a tube secured to the middle part provided with a thread, a control ring provided with a threading adapted to be screwed onto the thread of said tube, the control ring comprising an outer portion having a distinctive sign visible from the outside and an inner portion housed inside the outer portion and provided with said threads adapted to be screwed onto the thread of the tube, one of said parts comprising connecting means to a control rod, in particular to a winding stem, and clamping means for axially holding said outer portion and said inner portion in a predetermined angular position with respect to the longitudinal axis of said tube.
  • the inner surface of the outer part comprises a frustoconical surface and the inner element of the ring has a second complementary frustoconical surface.
  • Elastic clamping means are used to axially clamp the two frustoconical surfaces against each other in a relative angular orientation in which the distinctive sign is in the desired angular position.
  • the EP 1 151 357 discloses a watch case comprising a screwed crown, a ring positioned in an annular groove inside the ring and provided with an internal thread, and an intermediate tube comprising a threaded outer portion for receiving the internal thread of the ring.
  • the internal thread of the ring is indexed with respect to a distinctive sign located on an outer face of the ring and the intermediate tube is fixed to the box so as to be oriented and fixed angularly relative to the box with the aid of 'a nut.
  • This solution is quite difficult to implement industrially because the locking of the nut generates a tightening torque while any holding in position is problematic because of the absence of gripping areas and the restricted space to the inside the watch box.
  • this solution requires a template and a camera to index the inner thread of the ring and involves a welding operation.
  • the EP 1 411 401 describes a crown which comprises, on an outer face, a decorative element attached, supporting a distinctive sign and angularly adjustable relative to the crown through the use of elastic braking means.
  • the EP 1 124 167 discloses a screwed crown whose tube is not screwed into the middle part of the watch case, but in a deformable shape memory alloy ring allowing, by its temporary deformation due to a change of temperature able to change the phase of the shape memory material, to create a clearance between the crown and the middle part in order to angularly orient the crown with respect to the middle part according to a determined orientation.
  • the EP 1 727 005 describes a watch case crown screwed onto a threaded ring secured to a tube attached to the middle part. This threaded ring is rotatable and is rotated so as to adjust its thread in a predetermined position before being blocked by a locking member such as a nut. Thus, the adjusted position of the thread of the threaded ring makes it possible to determine the final orientation of the ring.
  • the EP 2 182 417 discloses a target ring having three tubes, the first tube being connected to the ring and screwing on the second tube, the third tube being arranged to receive the second tube, the second tube and the third tube having indexing means.
  • the third tube has an internal toothing provided on the inner periphery and arranged to cooperate with a ring gear of the second tube.
  • the second tube and the third tube are held locked in translation by a ring and form a subassembly having a rotatable thread on which the crown associated with the first tube is screwed.
  • the angular orientation is fixed once and for all and is directly related to the number of teeth present on the second tube and the third tube, and the number of indexing positions is necessarily limited because of the small diameters of these tubes.
  • this solution requires three tubes and is difficult to set up.
  • the object of the present invention is to overcome at least in part the disadvantages of the solutions of the state of the art mentioned above.
  • the object of the present invention is a watch case of the type mentioned above and according to claim 1.
  • a ring C has an inner portion 2 having a bottom 2b having a circular side wall at its periphery. This inner part is housed axially inside an outer portion 10 bearing a distinctive sign S visible from the outside. This sign S may occupy a certain angular position around the longitudinal axis of a tube 3, depending on the position of the crown C once it is screwed onto this tube.
  • the inner portion 2 has a thread 2d for screwing the inner portion 2 on a thread 3a of the tube 3 itself screwed into or secured to a radial passage la of a middle part 1 of a watch case.
  • the connection between the caseband 1 and the tube 3 is sealed thanks to a seal 4.
  • the inner portion 2 of the crown C comprises a tubular sleeve 2i which carries at its inner end a coupling ring 5 having a polygonal opening for engaging a complementary polygonal coupling element 7 provided on the winding stem 12.
  • a coil spring 6 is disposed in the sleeve 2i. It is supported, on the one hand, against the bottom of the tubular sleeve 2i and, on the other hand, against a bearing surface 12a integral with the winding stem 12.
  • the inner portion 2 further comprises a thread 2d formed on the inner face of a side wall 2h surrounding the tubular sleeve 2i serving to screw the crown C on a thread 3a formed on the outer lateral face of the tube 3.
  • the winding stem is shown in the clutch position while the winding crown C is shown in the screwed position.
  • the ring moves axially while the winding stem 12 remains fixed. Consequently, the clutch ring 5 moves axially with the crown C, so that it separates from the coupling element 7 by compressing the helical spring 6 between the bottom of the crown C and the bearing surface 12a of the winding stem.
  • the winding crown C is therefore represented as if there was no watch movement inside the watch case, which does not pose a problem for the understanding of the invention.
  • the inner portion 2 integral with the ring 5, the coil spring 6 and the winding stem 12 with the polygonal coupling element constitute a subassembly when it is introduced into the tube 3 inside which there are two seals O-ring 8 and 9.
  • This subset is already known and described in EP 0 556 155 and CH 686 596 .
  • the inner portion 2 of the crown C has a micro toothing or groove 2a formed on an outer circular side face of the side wall 2h.
  • the outer part 10 the crown C has a toothing or complementary groove 10a formed in the inner face of its side wall in which the inner portion 2 of the crown C is housed.
  • These complementary toothings or splines serve as angular indexing means around the longitudinal axis of the tube 3.
  • the inner face of the side wall of the outer portion 10 of the ring C further has a thread 10c located between its opening and the toothing or groove 10a, in which is threaded a thread 11a formed at the periphery of a clamping ring 11
  • the inner wall of this clamping ring 11 has an axial bearing surface 11b intended to engage with the front end 2e of the side wall 2h of the inner part 2 which serves as a stop.
  • the latter comprises gripping means, here splines 11c on its inner face and the outer part 10 of the ring comprises other means, here splines 10d on its outer wall, allowing to engage with appropriate tools to screw the clamping ring in the outer portion 10, until the bottom 2b of the inner portion 2 meets the bottom 10b of the outer portion.
  • the torque to which the clamping ring 11 is screwed is sufficiently high so that it does not become loose and so that the inner part 2 is kept locked axially, thus perpetuating the locking in rotation of the indexing teeth or splines 2a, 10a. .
  • FIG. figure 3 A variant of this first embodiment of the screwed crown C is shown in FIG. figure 3 .
  • the inner portion 2 comprises an inner annular housing 2f for receiving the O-ring seal 13 coming into radial contact with the outer face 3c of the tube 3.
  • This outer face 3 ends by a frustoconical portion 3d so as to allow the O-ring 13 to deform gradually during screwing of the crown C.
  • the tube 3 has an additional annular housing for receiving an additional annular seal 14.
  • crown C is designed to reduce its diameter.
  • annular hollow 2g is formed in the bottom of the inner portion 2.
  • This annular recess 2g is intended to allow the expansion of the O-ring 9 when compressed.
  • the geometry of this hollow 2g makes it possible to guarantee a straight support between the face 3b of the tube 3 and the face 2c of the internal part 2 while reducing the bulk of the crown C.
  • the mounting and orientation of the first embodiment of the crown C on the middle part 1 of the watch case are made according to the following steps.
  • the tube 3 is screwed tightly into the middle part 1 with the interposition of the seal 4.
  • the subassembly A consisting of the inner part 2 of the ring C connected to the elements 5, 6, and 7 as well as the winding stem 12 is screwed onto the tube 3. This screwing is performed until the subset A is screwed to a torque close to the maximum torque that the user of the watch can exercise on the crown.
  • the faces 3b of the tube 3, respectively 2c of the inner portion 2 of the crown C, both perpendicular to the longitudinal axis of the tube 3, are then in rigid mechanical contact, constituting axial stops defining a reproducible screwing position.
  • the outer portion 10 of the crown C is introduced by an axial translation on the subset A already screwed on the middle part 1, giving the symbol S the angular orientation closest to that desired.
  • the teeth or indexing splines 2a of the inner part and 10a of the outer part mutually interpenetrate.
  • the accuracy of the angular orientation of the symbol S of the outer part 10 about the longitudinal axis of the tube 3 is a function of the pitch of the teeth or splines 2a, 10a. The smaller this step, the better the accuracy of the angular positioning of the symbol S.
  • the subassembly A on which the outer portion 10 is disposed is unscrewed while maintaining the contact between the surfaces 2b and 10b, until the thread 2d is separated from the thread 3a of the tube 3.
  • a fourth step the subset A and the outer portion 10 of the crown C are moved together in translation so as to obtain a complete withdrawal of these two elements relative to the middle part 1.
  • the length of the tooth 2a of the inner part 2 must be sufficient for the indexing means 2a of the subassembly A and those 10a the outer part 10 remain engaged since the two parts 2 and 10 of the crown C are not yet united with one another.
  • the thread 11a of the locking ring 11 is screwed into the thread 10c of the outer portion 10 by means of a tool engaging with the splines 11c, respectively 10d.
  • the screwing of the parts 10 and 11 makes it possible to hold the teeth or splines 2a and 10a in engagement when the bearing surface 11b is pressed against the end 2e of the side wall 2h of the internal part 2 and to catch the initial clearance allowing the introduction of the inner part 2 in the outer part 10.
  • the crown C and in particular its inner portion 2 is then screwed onto the tube 3 and the distinctive sign S returns to the angular position chosen during the second step.
  • This operation can be repeated without loss of orientation of the distinctive sign S given the rigid contact between the abutment faces 3b and 2c perpendicular to the longitudinal axis of the tube 3, guaranteeing the reproducibility of the angular position of the screwed crown C and therefore that of the sign S.
  • the outer portion 20 bearing the symbol S has a tube 20h at the end of which a coupling ring 15 with a polygonal opening is fixed.
  • a coil spring 16 presses a coupling element polygonal profile 17, integral with the winding stem 12. This polygonal profile is complementary to that of the polygonal opening of the ring 15 in which it is engaged.
  • a thread 24d of the inner portion 24 is screwed onto a thread 23a of the tube 23.
  • the outer portion 20 and the inner portion 24 are then axially fixed to the to one another, as in the previous embodiment by a clamping ring 25.
  • the inner portion 24 is in the form of a cylindrical ring whose outer lateral face is provided with a micro toothing or groove 24a engaged with a complementary micro-tooth or spline 20a formed on the inner lateral face of the outer portion 20 of the
  • the inner face of the ring 24 has an axial abutment face 24c for coming into contact with a bearing surface 23b of the tube 23.
  • These abutment faces 23b, 24c are perpendicular to the longitudinal axis of the tube 23 and serve as abutments for determining a reproducible crown crown screwing limit position, to guarantee the accuracy of the angular position of the distinctive sign S.
  • the clamping ring 25 serves to secure the sub-assembly B and the ring 24, this thanks to a thread 25a formed in its axial opening in engagement with a thread 20c formed on the outer lateral face of the tubular sleeve 20h of the outer part 20 of the crown C, so as to maintain in abutment the abutment faces 20b and 24b and the bearing surface 25b of the ring with the axial abutment face 24e of the inner portion 24.
  • the ring 24 is screwed onto the tube 23 already sealed to the middle part 1 by means of a seal 4. This screwing stops once the ring 24 is screwed to a torque close to the maximum torque that will exert the user of the watch on its crown C and the span 23b is in rigid mechanical contact with the end 24c of the inner portion 24 of the crown C.
  • the subassembly B consisting of the outer part 20 connected to the coupling elements 15, 16, 17 and the winding stem 12 is introduced axially and angularly oriented on the ring 24 by setting the teeth or grooves. 24a and 20a in engagement.
  • the angular orientation of the subset B is the one that we want to give to the symbol S.
  • a third step the subassembly B and the ring 24 are unscrewed while maintaining the contact between the abutment faces 20b and 24b, until the threads 23a and 24d are separated.
  • a fourth step the subset B and the ring 24 are moved together so as to obtain a complete withdrawal of these two elements relative to the rest of the box.
  • the length of the toothing or groove 24a of the ring 24 must be sufficient so that the outer portion 20 and the inner portion 24 of the ring C remain in engagement and maintain their respective orientation with respect to the other because they are not yet secured.
  • the clamping ring 25 is inserted along the longitudinal axis of the winding stem 12.
  • the ring 25 is screwed onto the thread 20c of the tubular sleeve 20h and tightened by means of a tool coming from in engagement with the splines 20d on the one hand and with gripping means, here a polygonal profile 25c, ( figure 6 ) formed on an outer lateral face of the clamping ring 25.
  • the seal 9 is then positioned between the inner portion 24 and the clamping ring 25. Once the crown C is screwed on the tube 23, the distinctive sign S returns to the angular position chosen during the second step, even after several screwing operations. and successive unscrewing thanks to the rigid contact between the bearing surface 23b and the end 24c of the inner part 24.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Adornments (AREA)
  • Transmission Devices (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Abstract

The case has a clamping unit e.g. locking collar (11), for axially holding external parts (10) and internal parts (2) of a control crown (C) in an angular position determined with respect to a longitudinal axis of a tube (3). The internal parts have first angular indexing grooves (2a), and the external parts have second angular indexing grooves (10a). The indexing grooves are shaped so as to engage axially with one another by relative axial movement between the internal parts and the external parts. The indexing grooves are maintained by the clamping unit.

Description

La présente invention se rapporte à une boîte de montre comprenant une carrure, un tube solidaire de la carrure muni d'un filetage, une couronne de commande munie d'un filetage apte à être vissé sur le filetage dudit tube, la couronne de commande comportant une partie externe présentant un signe distinctif visible de l'extérieur et une partie interne logée à l'intérieur de la partie externe et munie dudit filetage apte à être vissé sur le filetage du tube, l'une desdites parties comportant des moyens de liaison à une tige de commande, notamment à une tige de remontoir, et des moyens de serrage pour tenir axialement ladite partie externe et ladite partie interne dans une position angulaire déterminée par rapport à l'axe longitudinal dudit tube.The present invention relates to a watch case comprising a caseband, a tube secured to the middle part provided with a thread, a control ring provided with a threading adapted to be screwed onto the thread of said tube, the control ring comprising an outer portion having a distinctive sign visible from the outside and an inner portion housed inside the outer portion and provided with said threads adapted to be screwed onto the thread of the tube, one of said parts comprising connecting means to a control rod, in particular to a winding stem, and clamping means for axially holding said outer portion and said inner portion in a predetermined angular position with respect to the longitudinal axis of said tube.

La fabrication et le montage de couronnes à visser sur des boîtes de montres sont bien connus.The manufacture and assembly of screw-on crowns on watch cases are well known.

Cependant, pour des raisons esthétiques il est important, lorsque la face externe de la partie externe de la couronne présente un signe distinctif, de pouvoir garantir que le signe distinctif se trouve dans une orientation angulaire déterminée par rapport à l'axe longitudinal du tube de la boîte de montre auquel la couronne est vissée. Sinon, la position angulaire du signe distinctif est aléatoire.However, for aesthetic reasons it is important, when the external face of the outer part of the crown has a distinctive sign, to be able to guarantee that the distinctive sign is in a given angular orientation with respect to the longitudinal axis of the tube. the watch case to which the crown is screwed. Otherwise, the angular position of the distinctive sign is random.

On a déjà proposé une boîte de montre du type susmentionné dans le EP 1 701 225 . Dans ce document, la surface interne de la partie externe comprend une surface tronconique et l'élément interne de la couronne présente une deuxième surface tronconique complémentaire. Des moyens élastiques de serrage servent à serrer axialement les deux surfaces tronconiques l'une contre l'autre dans une orientation angulaire relative dans laquelle le signe distinctif se trouve dans la position angulaire désirée.It has already been proposed a watch case of the type mentioned above in the EP 1 701 225 . In this document, the inner surface of the outer part comprises a frustoconical surface and the inner element of the ring has a second complementary frustoconical surface. Elastic clamping means are used to axially clamp the two frustoconical surfaces against each other in a relative angular orientation in which the distinctive sign is in the desired angular position.

Avec cette solution, il est nécessaire que la conicité des deux surfaces tronconiques soit quasi identique. Une trop grande différence de conicité ne permettrait plus de garantir la fixation de la partie externe et de la partie interne de la couronne après serrage au risque de permettre un déplacement angulaire relatif de la partie externe et de la partie interne. D'autre part, un joint d'étanchéité plat est interposé entre la face interne du fond de la couronne et l'extrémité du tube sur lequel elle est vissée. La compression de ce joint dépendant du degré de vissage de la couronne, la précision de l'orientation angulaire de la couronne est forcément limitée.With this solution, it is necessary that the taper of the two frustoconical surfaces is almost identical. Too great a difference in conicity no longer makes it possible to guarantee the fastening of the outer part and the inner part of the ring after tightening, to the risk of allowing relative angular displacement of the outer part and the inner part. On the other hand, a flat gasket is interposed between the inner face of the bottom of the ring and the end of the tube on which it is screwed. The compression of this seal depends on the degree of screwing of the crown, the accuracy of the angular orientation of the crown is necessarily limited.

Le EP 1 151 357 décrit une boîte de montre comprenant une couronne vissée, une bague positionnée dans une gorge annulaire intérieure de la couronne et munie d'un taraudage intérieur, et un tube intermédiaire comprenant un tronçon extérieur fileté destiné à recevoir le taraudage intérieur de la bague.The EP 1 151 357 discloses a watch case comprising a screwed crown, a ring positioned in an annular groove inside the ring and provided with an internal thread, and an intermediate tube comprising a threaded outer portion for receiving the internal thread of the ring.

Le taraudage intérieur de la bague est indexé par rapport à un signe distinctif situé sur une face externe de la couronne et le tube intermédiaire est fixé à la boîte de façon à pouvoir être orienté et fixé angulairement par rapport à la boîte à l'aide d'un écrou.The internal thread of the ring is indexed with respect to a distinctive sign located on an outer face of the ring and the intermediate tube is fixed to the box so as to be oriented and fixed angularly relative to the box with the aid of 'a nut.

Cette solution est assez difficile à mettre en oeuvre industriellement car le blocage de l'écrou génère un couple de serrage alors même que tout maintien en position est problématique du fait de l'absence de zones de préhension et de l'espace restreint à l'intérieur de la boîte de montre. De plus, cette solution nécessite un gabarit et une caméra pour indexer le taraudage intérieur de la bague et implique une opération de soudage.This solution is quite difficult to implement industrially because the locking of the nut generates a tightening torque while any holding in position is problematic because of the absence of gripping areas and the restricted space to the inside the watch box. In addition, this solution requires a template and a camera to index the inner thread of the ring and involves a welding operation.

Le EP 1 411 401 décrit une couronne qui comporte, sur une face extérieure, un élément décoratif rapporté, supportant un signe distinctif et orientable angulairement par rapport à la couronne grâce à l'utilisation de moyens de freinage élastiques.The EP 1 411 401 describes a crown which comprises, on an outer face, a decorative element attached, supporting a distinctive sign and angularly adjustable relative to the crown through the use of elastic braking means.

Cette solution ne permet pas d'avoir un rendu esthétique satisfaisant car la jonction entre la couronne et l'élément décoratif demeure visible. De plus, l'élément décoratif peut être déplacé accidentellement du fait de l'utilisation des moyens de freinage élastiques.This solution does not provide a satisfactory aesthetic because the junction between the crown and the decorative element remains visible. In addition, the decorative element can be moved accidentally due to the use of elastic braking means.

Le EP 1 124 167 décrit une couronne vissée dont le tube n'est pas vissé dans la carrure de la boîte de montre, mais dans une bague déformable en alliage à mémoire de forme permettant, par sa déformation temporaire suite à un changement de température apte à changer la phase du matériau à mémoire de forme, de créer un jeu entre la couronne et la carrure afin d'orienter angulairement la couronne par rapport à la carrure suivant une orientation déterminée.The EP 1 124 167 discloses a screwed crown whose tube is not screwed into the middle part of the watch case, but in a deformable shape memory alloy ring allowing, by its temporary deformation due to a change of temperature able to change the phase of the shape memory material, to create a clearance between the crown and the middle part in order to angularly orient the crown with respect to the middle part according to a determined orientation.

Cette solution est délicate à mettre en oeuvre car le changement de phase du matériau à mémoire de forme implique des différences de température relativement importantes, cela alors même que ce matériau doit résister à l'oxydation en cas d'accouplement avec des matériaux nobles, comme l'or ou le platine par exemple. Au final, cette solution présente le risque que les deux parties de la couronne se désolidarisent lorsque la montre est soumise à des températures extrêmes, comme par exemple lorsqu'elle est laissée en plein soleil derrière une vitre ou lorsqu'elle est soumise à des températures nettement inférieures à 0°C. Le EP 1 727 005 décrit une couronne de boîte de montre vissée sur une bague filetée solidaire d'un tube fixé à la carrure. Cette bague filetée est mobile en rotation et est tournée de manière à ajuster son filetage dans une position déterminée avant d'être bloquée grâce à un organe de blocage tel qu'un écrou. Ainsi, la position ajustée du filetage de la bague filetée permet de déterminer l'orientation finale de la couronne.This solution is difficult to implement because the phase change of the shape memory material involves relatively large temperature differences, even though this material must withstand oxidation in case of coupling with noble materials, such as gold or platinum for example. In the end, this solution has the risk that the two parts of the crown will disengage when the watch is subjected to extreme temperatures, such as when left in full sun behind a window or when it is subjected to temperatures well below 0 ° C. The EP 1 727 005 describes a watch case crown screwed onto a threaded ring secured to a tube attached to the middle part. This threaded ring is rotatable and is rotated so as to adjust its thread in a predetermined position before being blocked by a locking member such as a nut. Thus, the adjusted position of the thread of the threaded ring makes it possible to determine the final orientation of the ring.

Cependant, cette solution ne permet pas d'obtenir une orientation précise et nécessite un outil pour pouvoir libérer la bague de l'organe de blocage, pour l'orienter et la bloquer sans qu'elle ne tourne.However, this solution does not provide a precise orientation and requires a tool to be able to release the ring of the locking member, to orient and block without turning.

Le EP 2 182 417 décrit une couronne visée présentant trois tubes, le premier tube étant lié à la couronne et se vissant sur le deuxième tube, le troisième tube étant agencé pour recevoir le deuxième tube, le deuxième tube et le troisième tube comportant des moyens d'indexage.The EP 2 182 417 discloses a target ring having three tubes, the first tube being connected to the ring and screwing on the second tube, the third tube being arranged to receive the second tube, the second tube and the third tube having indexing means.

Le troisième tube comporte une denture interne prévue sur le pourtour intérieur et agencée pour coopérer avec une couronne dentée du deuxième tube. Le deuxième tube et le troisième tube sont maintenus bloqués en translation par une bague et forment un sous ensemble ayant un filetage orientable sur lequel la couronne associée au premier tube vient se visser.The third tube has an internal toothing provided on the inner periphery and arranged to cooperate with a ring gear of the second tube. The second tube and the third tube are held locked in translation by a ring and form a subassembly having a rotatable thread on which the crown associated with the first tube is screwed.

L'orientation angulaire est fixée une fois pour toute et est directement liée au nombre de dents présentes sur le deuxième tube et le troisième tube, et le nombre de positions d'indexation est forcément limité du fait des faibles diamètres de ces tubes. D'autre part, cette solution nécessite trois tubes et est difficile à mettre en place.The angular orientation is fixed once and for all and is directly related to the number of teeth present on the second tube and the third tube, and the number of indexing positions is necessarily limited because of the small diameters of these tubes. On the other hand, this solution requires three tubes and is difficult to set up.

Le but de la présente invention est de pallier au moins en partie aux inconvénients des solutions de l'état de la technique susmentionné.The object of the present invention is to overcome at least in part the disadvantages of the solutions of the state of the art mentioned above.

A cet effet, l'objet de la présente invention est une boîte de montre du type mentionné précédemment et conforme à la revendication 1.For this purpose, the object of the present invention is a watch case of the type mentioned above and according to claim 1.

Le dessin annexé illustre, schématiquement et à titre d'exemple, deux formes d'exécution d'une boîte de montre comprenant une couronne vissée, objet de cette invention, ainsi que des variantes de la première forme d'exécution.

  • La figure 1 est une vue partielle en coupe d'une boîte de montre dans un plan radial passant par l'axe de la tige de remontoir, selon une première forme d'exécution;
  • la figure 2 est une vue en perspective éclatée de la couronne de remontoir de cette première forme d'exécution;
  • la figure 3 est une variante de réalisation de cette première forme d'exécution;
  • la figure 4 est une autre variante de réalisation de cette première forme d'exécution;
  • la figure 5 est une vue partielle en coupe d'une boîte de montre dans un plan radial passant par l'axe de la tige de remontoir selon la seconde forme d'exécution de l'invention;
  • la figure 6 est une vue en perspective éclatée de la couronne de remontoir de la seconde forme d'exécution.
The appended drawing illustrates, schematically and by way of example, two embodiments of a watch case comprising a screwed crown, object of this invention, as well as variants of the first embodiment.
  • The figure 1 is a partial sectional view of a watch case in a radial plane passing through the axis of the winding stem, according to a first embodiment;
  • the figure 2 is an exploded perspective view of the winding crown of this first embodiment;
  • the figure 3 is an alternative embodiment of this first embodiment;
  • the figure 4 is another variant embodiment of this first embodiment;
  • the figure 5 is a partial sectional view of a watch case in a radial plane passing through the axis of the winding stem according to the second embodiment of the invention;
  • the figure 6 is an exploded perspective view of the winding crown of the second embodiment.

Une couronne C comporte une partie interne 2 comportant un fond 2b présentant une paroi latérale circulaire à sa périphérie. Cette partie interne est logée axialement à l'intérieur d'une partie externe 10 portant un signe distinctif S visible de l'extérieur. Ce signe S peut occuper une certaine position angulaire autour de l'axe longitudinal d'un tube 3, suivant la position de la couronne C une fois qu'elle est vissée sur ce tube.A ring C has an inner portion 2 having a bottom 2b having a circular side wall at its periphery. This inner part is housed axially inside an outer portion 10 bearing a distinctive sign S visible from the outside. This sign S may occupy a certain angular position around the longitudinal axis of a tube 3, depending on the position of the crown C once it is screwed onto this tube.

Dans la première forme d'exécution représentée sur les figures 1 à 4, la partie interne 2 comporte un filetage 2d servant à visser la partie interne 2 sur un filetage 3a du tube 3 lui-même vissé dans ou solidarisé à un passage radial la d'une carrure 1 d'une boîte de montre. La liaison entre la carrure 1 et le tube 3 est rendue étanche grâce à un joint 4.In the first embodiment represented on the Figures 1 to 4 , the inner portion 2 has a thread 2d for screwing the inner portion 2 on a thread 3a of the tube 3 itself screwed into or secured to a radial passage la of a middle part 1 of a watch case. The connection between the caseband 1 and the tube 3 is sealed thanks to a seal 4.

La partie interne 2 de la couronne C comporte un manchon tubulaire 2i qui porte à son extrémité interne une bague d'accouplement 5 présentant une ouverture polygonale pour venir en prise avec un élément d'accouplement polygonal complémentaire 7 ménagé sur la tige de remontoir 12.The inner portion 2 of the crown C comprises a tubular sleeve 2i which carries at its inner end a coupling ring 5 having a polygonal opening for engaging a complementary polygonal coupling element 7 provided on the winding stem 12.

Un ressort hélicoïdal 6 est disposé dans le manchon 2i. Il prend appui, d'une part, contre le fond du manchon tubulaire 2i et, d'autre part, contre une portée 12a solidaire de la tige de remontoir 12.A coil spring 6 is disposed in the sleeve 2i. It is supported, on the one hand, against the bottom of the tubular sleeve 2i and, on the other hand, against a bearing surface 12a integral with the winding stem 12.

La partie interne 2 comporte encore un filetage 2d ménagé sur la face interne d'une paroi latérale 2h entourant le manchon tubulaire 2i servant à visser la couronne C sur un filetage 3a ménagé sur la face latérale externe du tube 3.The inner portion 2 further comprises a thread 2d formed on the inner face of a side wall 2h surrounding the tubular sleeve 2i serving to screw the crown C on a thread 3a formed on the outer lateral face of the tube 3.

Dans toutes les figures illustrant la présente invention, la tige de remontoir est représentée en position d'embrayage alors que la couronne de remontoir C est représentée en position vissée. Dans la réalité, lorsque la couronne de remontoir C est vissée sur le tube 3, la couronne se déplace axialement alors que la tige de remontoir 12 demeure fixe. Par conséquent, la bague d'embrayage 5 se déplace axialement avec la couronne C, de sorte qu'elle se sépare de l'élément d'accouplement 7 en comprimant le ressort hélicoïdal 6 entre le fond de la couronne C et la portée 12a de la tige de remontoir. La couronne de remontoir C est donc représentée comme si il n'y avait pas de mouvement de montre à l'intérieur de la boîte de montre, ce qui ne pose pas de problème pour la compréhension de l'invention.In all the figures illustrating the present invention, the winding stem is shown in the clutch position while the winding crown C is shown in the screwed position. In reality, when the winding crown C is screwed onto the tube 3, the ring moves axially while the winding stem 12 remains fixed. Consequently, the clutch ring 5 moves axially with the crown C, so that it separates from the coupling element 7 by compressing the helical spring 6 between the bottom of the crown C and the bearing surface 12a of the winding stem. The winding crown C is therefore represented as if there was no watch movement inside the watch case, which does not pose a problem for the understanding of the invention.

La partie interne 2 solidaire de la bague 5, le ressort hélicoïdal 6 et la tige de remontoir 12 avec l'élément polygonal d'accouplement constituent un sous-ensemble quand il est introduit dans le tube 3 à l'intérieur duquel se trouvent deux joints O-ring 8 et 9. Ce sous-ensemble est déjà connu et décrit dans les EP 0 556 155 et CH 686 596.The inner portion 2 integral with the ring 5, the coil spring 6 and the winding stem 12 with the polygonal coupling element constitute a subassembly when it is introduced into the tube 3 inside which there are two seals O-ring 8 and 9. This subset is already known and described in EP 0 556 155 and CH 686 596 .

La partie interne 2 de la couronne C comporte une micro denture ou cannelure 2a ménagée sur une face latérale circulaire externe de la paroi latérale 2h. La partie externe 10 de la couronne C comporte une denture ou cannelure complémentaire 10a, ménagée dans la face interne de sa paroi latérale dans laquelle la partie interne 2 de la couronne C est logée. Ces dentures ou cannelures complémentaires servent de moyen d'indexage angulaire autour de l'axe longitudinal du tube 3.The inner portion 2 of the crown C has a micro toothing or groove 2a formed on an outer circular side face of the side wall 2h. The outer part 10 the crown C has a toothing or complementary groove 10a formed in the inner face of its side wall in which the inner portion 2 of the crown C is housed. These complementary toothings or splines serve as angular indexing means around the longitudinal axis of the tube 3.

La face interne de la paroi latérale de la partie externe 10 de la couronne C présente encore un filetage 10c situé entre son ouverture et la denture ou cannelure 10a, dans lequel est vissé un filetage 11a ménagé à la périphérie d'une bague de serrage 11. La paroi intérieure de cette bague de serrage 11 comporte une portée axiale 11b destinée à venir en prise avec l'extrémité avant 2e de la paroi latérale 2h de la partie interne 2 qui sert de butée.The inner face of the side wall of the outer portion 10 of the ring C further has a thread 10c located between its opening and the toothing or groove 10a, in which is threaded a thread 11a formed at the periphery of a clamping ring 11 The inner wall of this clamping ring 11 has an axial bearing surface 11b intended to engage with the front end 2e of the side wall 2h of the inner part 2 which serves as a stop.

Pour permettre le vissage de la bague 11, celle-ci comporte des moyens de préhension, ici des cannelures 11c sur sa face interne et la partie externe 10 de la couronne comporte d'autres moyens, ici des cannelures 10d sur sa paroi externe, permettant de venir en prise avec des outils appropriés pour visser la bague de serrage dans la partie externe 10, jusqu'à ce que le fond 2b de la partie interne 2 rencontre le fond 10b de la partie externe.To enable the ring 11 to be screwed, the latter comprises gripping means, here splines 11c on its inner face and the outer part 10 of the ring comprises other means, here splines 10d on its outer wall, allowing to engage with appropriate tools to screw the clamping ring in the outer portion 10, until the bottom 2b of the inner portion 2 meets the bottom 10b of the outer portion.

Le couple auquel la bague de serrage 11 est vissée est suffisamment élevé pour qu'elle ne se desserre pas et pour que la partie interne 2 soit maintenue bloquée axialement, pérennisant par conséquent le blocage en rotation des dentures ou cannelures 2a, 10a d'indexage.The torque to which the clamping ring 11 is screwed is sufficiently high so that it does not become loose and so that the inner part 2 is kept locked axially, thus perpetuating the locking in rotation of the indexing teeth or splines 2a, 10a. .

Une variante de cette première forme d'exécution de la couronne vissée C est représentée sur la figure 3.A variant of this first embodiment of the screwed crown C is shown in FIG. figure 3 .

Cette variante se distingue essentiellement de la forme d'exécution des figures 1 et 2 par le fait que la partie interne 2 comporte un logement annulaire intérieur 2f destiné à recevoir le joint O-ring 13 venant en contact radial avec la face externe 3c du tube 3. Cette face externe 3 se termine par une partie tronconique 3d de façon à permettre au joint O-ring 13 de se déformer progressivement lors du vissage de la couronne C. Le tube 3 dispose d'un logement annulaire supplémentaire pour recevoir un joint annulaire 14 supplémentaire.This variant is essentially distinguished from the form of execution of Figures 1 and 2 in that the inner portion 2 comprises an inner annular housing 2f for receiving the O-ring seal 13 coming into radial contact with the outer face 3c of the tube 3. This outer face 3 ends by a frustoconical portion 3d so as to allow the O-ring 13 to deform gradually during screwing of the crown C. The tube 3 has an additional annular housing for receiving an additional annular seal 14.

Dans une autre variante de la première forme d'exécution représentée sur la figure 4, la couronne C est conçue de manière à réduire son diamètre.In another variant of the first embodiment represented on the figure 4 , crown C is designed to reduce its diameter.

A cet effet, une creusure annulaire 2g est ménagée dans le fond de la partie interne 2. Cette creusure annulaire 2g est destinée à permettre l'expansion du joint O-ring 9 lorsqu'il est comprimé. La géométrie de cette creusure 2g permet de garantir un appui franc entre la face 3b du tube 3 et la face 2c de la partie interne 2 tout en réduisant l'encombrement de la couronne C.For this purpose, an annular hollow 2g is formed in the bottom of the inner portion 2. This annular recess 2g is intended to allow the expansion of the O-ring 9 when compressed. The geometry of this hollow 2g makes it possible to guarantee a straight support between the face 3b of the tube 3 and the face 2c of the internal part 2 while reducing the bulk of the crown C.

Le montage et l'orientation de la première forme d'exécution de la couronne C sur la carrure 1 de boîte de montre sont réalisés selon les étapes suivantes.The mounting and orientation of the first embodiment of the crown C on the middle part 1 of the watch case are made according to the following steps.

Dans une première étape, le tube 3 est vissé de manière étanche dans la carrure 1 avec interposition du joint 4. Le sous-ensemble A, constitué de la partie interne 2 de la couronne C liée aux éléments 5, 6, et 7 ainsi que la tige de remontoir 12, est vissé sur le tube 3. Ce vissage est effectué jusqu'à ce que le sous-ensemble A soit vissé à un couple proche du couple maximal que l'utilisateur de la montre peut exercer sur la couronne. Les faces 3b du tube 3, respectivement 2c de la partie interne 2 de la couronne C, toutes deux perpendiculaires à l'axe longitudinal du tube 3, sont alors en contact mécanique rigide, constituant des butées axiales définissant une position de vissage reproductible.In a first step, the tube 3 is screwed tightly into the middle part 1 with the interposition of the seal 4. The subassembly A, consisting of the inner part 2 of the ring C connected to the elements 5, 6, and 7 as well as the winding stem 12 is screwed onto the tube 3. This screwing is performed until the subset A is screwed to a torque close to the maximum torque that the user of the watch can exercise on the crown. The faces 3b of the tube 3, respectively 2c of the inner portion 2 of the crown C, both perpendicular to the longitudinal axis of the tube 3, are then in rigid mechanical contact, constituting axial stops defining a reproducible screwing position.

Dans une deuxième étape, la partie externe 10 de la couronne C est introduite par une translation axiale sur le sous-ensemble A déjà vissé sur la carrure 1, en donnant au symbole S l'orientation angulaire la plus proche de celle voulue. Lors de cette translation, les dentures ou cannelures d'indexage 2a de la partie interne et 10a de la partie externe s'interpénètrent mutuellement. La précision de l'orientation angulaire du symbole S de la partie externe 10 autour de l'axe longitudinal du tube 3 est fonction du pas des dentures ou cannelures 2a, 10a. Plus ce pas est petit, meilleure est la précision du positionnement angulaire du symbole S.In a second step, the outer portion 10 of the crown C is introduced by an axial translation on the subset A already screwed on the middle part 1, giving the symbol S the angular orientation closest to that desired. During this translation, the teeth or indexing splines 2a of the inner part and 10a of the outer part mutually interpenetrate. The accuracy of the angular orientation of the symbol S of the outer part 10 about the longitudinal axis of the tube 3 is a function of the pitch of the teeth or splines 2a, 10a. The smaller this step, the better the accuracy of the angular positioning of the symbol S.

Dans une troisième étape, le sous-ensemble A sur lequel est disposée la partie externe 10 est dévissé en maintenant le contact entre les surfaces 2b et 10b et ce, jusqu'à ce que le filetage 2d soit séparé du filetage 3a du tube 3.In a third step, the subassembly A on which the outer portion 10 is disposed is unscrewed while maintaining the contact between the surfaces 2b and 10b, until the thread 2d is separated from the thread 3a of the tube 3.

Dans une quatrième étape, le sous-ensemble A et la partie externe 10 de la couronne C sont déplacés ensemble en translation de manière à obtenir un retrait complet de ces deux éléments par rapport à la carrure 1. A cet effet, la longueur de la denture 2a de la partie interne 2 doit être suffisante pour que les moyens d'indexage 2a du sous-ensemble A et ceux 10a la partie externe 10 restent en prise étant donné que les deux parties 2 et 10 de la couronne C ne sont pas encore rendues solidaires l'une de l'autre.In a fourth step, the subset A and the outer portion 10 of the crown C are moved together in translation so as to obtain a complete withdrawal of these two elements relative to the middle part 1. For this purpose, the length of the tooth 2a of the inner part 2 must be sufficient for the indexing means 2a of the subassembly A and those 10a the outer part 10 remain engaged since the two parts 2 and 10 of the crown C are not yet united with one another.

Dans une cinquième étape, le filetage 11a de la bague de blocage 11 est vissé dans le filetage 10c de la partie externe 10 par l'intermédiaire d'un outil venant en prise avec les cannelures 11c, respectivement 10d. Le vissage des pièces 10 et 11 permet de maintenir en prise les dentures ou cannelures 2a et 10a lorsque la portée 11b est pressée contre l'extrémité 2e de la paroi latérale 2h de la partie interne 2 et de rattraper le jeu initial permettant l'introduction de la partie interne 2 dans la partie externe 10.In a fifth step, the thread 11a of the locking ring 11 is screwed into the thread 10c of the outer portion 10 by means of a tool engaging with the splines 11c, respectively 10d. The screwing of the parts 10 and 11 makes it possible to hold the teeth or splines 2a and 10a in engagement when the bearing surface 11b is pressed against the end 2e of the side wall 2h of the internal part 2 and to catch the initial clearance allowing the introduction of the inner part 2 in the outer part 10.

Les opérations précédentes ont permis de solidariser le sous-ensemble A avec la partie externe 10 de la couronne C et d'obtenir une couronne C complète.The previous operations have secured the subset A with the outer portion 10 of the crown C and to obtain a complete crown C.

La couronne C et en particulier sa partie interne 2 est alors revissée sur le tube 3 et le signe distinctif S retrouve la position angulaire choisie lors de la deuxième étape. Cette opération peut être répétée sans perte d'orientation du signe distinctif S étant donné le contact rigide entre les faces de butées 3b et 2c perpendiculaires à l'axe longitudinal du tube 3, garantes de la reproductibilité de la position angulaire de la couronne C vissée et donc de celle du signe S.The crown C and in particular its inner portion 2 is then screwed onto the tube 3 and the distinctive sign S returns to the angular position chosen during the second step. This operation can be repeated without loss of orientation of the distinctive sign S given the rigid contact between the abutment faces 3b and 2c perpendicular to the longitudinal axis of the tube 3, guaranteeing the reproducibility of the angular position of the screwed crown C and therefore that of the sign S.

Dans la deuxième forme d'exécution représentée sur les figures 5 et 6, la partie externe 20 portant le symbole S, présente un tube 20h à l'extrémité duquel une bague d'accouplement 15 à ouverture polygonale est fixée. Un ressort hélicoïdal 16 presse un élément d'accouplement à profil polygonal 17, solidaire de la tige de remontoir 12. Ce profil polygonal est complémentaire de celui de l'ouverture polygonale de la bague 15 dans laquelle il est engagé. Ces pièces forment un sous-ensemble B une fois qu'elles sont associées avec la tige de remontoir 12.In the second embodiment represented on the Figures 5 and 6 , the outer portion 20 bearing the symbol S, has a tube 20h at the end of which a coupling ring 15 with a polygonal opening is fixed. A coil spring 16 presses a coupling element polygonal profile 17, integral with the winding stem 12. This polygonal profile is complementary to that of the polygonal opening of the ring 15 in which it is engaged. These parts form a subset B once they are associated with the winding stem 12.

Pour permettre à ce sous-ensemble B portant le symbole S d'être orientable, un filetage 24d de la partie interne 24 se visse sur un filetage 23a du tube 23. La partie externe 20 et la partie interne 24 étant ensuite fixées axialement l'une à l'autre, comme dans la forme d'exécution précédente par une bague de serrage 25.To allow this subset B bearing the symbol S to be orientable, a thread 24d of the inner portion 24 is screwed onto a thread 23a of the tube 23. The outer portion 20 and the inner portion 24 are then axially fixed to the to one another, as in the previous embodiment by a clamping ring 25.

La partie interne 24 a la forme d'une bague cylindrique dont la face latérale externe est munie d'une micro denture ou cannelure 24a en prise avec une micro denture ou cannelure complémentaire 20a ménagée sur la face latérale interne de la partie externe 20 de la couronne C. La face interne de la bague 24 comporte une face de butée axiale 24c pour venir en contact avec une portée 23b du tube 23. Ces faces de butées 23b, 24c sont perpendiculaires à l'axe longitudinal du tube 23 et servent de butées pour déterminer une position limite de vissage de la couronne C reproductible, permettant de garantir la précision de la position angulaire du signe distinctif S.The inner portion 24 is in the form of a cylindrical ring whose outer lateral face is provided with a micro toothing or groove 24a engaged with a complementary micro-tooth or spline 20a formed on the inner lateral face of the outer portion 20 of the The inner face of the ring 24 has an axial abutment face 24c for coming into contact with a bearing surface 23b of the tube 23. These abutment faces 23b, 24c are perpendicular to the longitudinal axis of the tube 23 and serve as abutments for determining a reproducible crown crown screwing limit position, to guarantee the accuracy of the angular position of the distinctive sign S.

La bague de serrage 25 sert à solidariser le sous-ensemble B et la bague 24, ceci grâce à un filetage 25a ménagé dans son ouverture axiale en prise avec un filetage 20c ménagé sur la face latérale externe du manchon tubulaire 20h de la partie externe 20 de la couronne C, de manière à maintenir en appui les faces de butées 20b et 24b ainsi que la portée 25b de la bague avec la face de butée axiale 24e de la partie interne 24.The clamping ring 25 serves to secure the sub-assembly B and the ring 24, this thanks to a thread 25a formed in its axial opening in engagement with a thread 20c formed on the outer lateral face of the tubular sleeve 20h of the outer part 20 of the crown C, so as to maintain in abutment the abutment faces 20b and 24b and the bearing surface 25b of the ring with the axial abutment face 24e of the inner portion 24.

Dans cette deuxième forme d'exécution, le montage et l'orientation de la couronne vissée C sont réalisés suivant les étapes suivantes.In this second embodiment, the mounting and the orientation of the screwed crown C are carried out according to the following steps.

Dans une première étape, la bague 24 est vissée sur le tube 23 déjà solidaire de manière étanche à la carrure 1 grâce à un joint 4. Ce vissage s'arrête une fois que la bague 24 est vissée à un couple proche du couple maximal qu'exercera l'utilisateur de la montre sur sa couronne C et que la portée 23b est en contact mécanique rigide avec l'extrémité 24c de la partie interne 24 de la couronne C.In a first step, the ring 24 is screwed onto the tube 23 already sealed to the middle part 1 by means of a seal 4. This screwing stops once the ring 24 is screwed to a torque close to the maximum torque that will exert the user of the watch on its crown C and the span 23b is in rigid mechanical contact with the end 24c of the inner portion 24 of the crown C.

Dans une deuxième étape, le sous-ensemble B constitué de la partie externe 20 liée aux éléments d'accouplement 15, 16, 17 et à la tige de remontoir 12 est introduit axialement et orienté angulairement sur la bague 24 en mettant les dentures ou cannelures 24a et 20a en prise. L'orientation angulaire du sous-ensemble B est celle que l'on veut donner au symbole S.In a second step, the subassembly B consisting of the outer part 20 connected to the coupling elements 15, 16, 17 and the winding stem 12 is introduced axially and angularly oriented on the ring 24 by setting the teeth or grooves. 24a and 20a in engagement. The angular orientation of the subset B is the one that we want to give to the symbol S.

Dans une troisième étape, le sous-ensemble B et la bague 24 sont dévissés en conservant le contact entre les faces de butées 20b et 24b, jusqu'à ce que les filetages 23a et 24d soient séparés.In a third step, the subassembly B and the ring 24 are unscrewed while maintaining the contact between the abutment faces 20b and 24b, until the threads 23a and 24d are separated.

Dans une quatrième étape, le sous-ensemble B et la bague 24 sont déplacés ensemble de manière à obtenir un retrait complet de ces deux éléments par rapport au reste de la boîte. A cet effet, la longueur de la denture ou cannelure 24a de la bague 24 doit être suffisante pour que la partie externe 20 et la partie interne 24 de la couronne C restent en prise et gardent leur orientation respective l'une par rapport à l'autre étant donné qu'elles ne sont pas encore solidarisées.In a fourth step, the subset B and the ring 24 are moved together so as to obtain a complete withdrawal of these two elements relative to the rest of the box. For this purpose, the length of the toothing or groove 24a of the ring 24 must be sufficient so that the outer portion 20 and the inner portion 24 of the ring C remain in engagement and maintain their respective orientation with respect to the other because they are not yet secured.

Dans une cinquième étape, la bague de serrage 25 est introduite selon l'axe longitudinal de la tige de remontoir 12. Ensuite, la bague 25 est vissée sur le filetage 20c du manchon tubulaire 20h et serrée par l'intermédiaire d'un outil venant en prise avec les cannelures 20d d'une part et avec des moyens de préhension, ici un profil polygonal 25c, (figure 6) ménagé sur une face latérale externe de la bague de serrage 25.In a fifth step, the clamping ring 25 is inserted along the longitudinal axis of the winding stem 12. Next, the ring 25 is screwed onto the thread 20c of the tubular sleeve 20h and tightened by means of a tool coming from in engagement with the splines 20d on the one hand and with gripping means, here a polygonal profile 25c, ( figure 6 ) formed on an outer lateral face of the clamping ring 25.

Les opérations précédentes ont permis de solidariser le sous-ensemble B avec la partie interne 24 de la couronne et d'obtenir une couronne C complète avec le signe distinctif S.The previous operations made it possible to secure the subset B with the inner portion 24 of the crown and to obtain a crown C complete with the distinctive sign S.

Le joint 9 est alors positionné entre la partie interne 24 et la bague de serrage 25. Une fois la couronne C revissée sur le tube 23, le signe distinctif S retrouve la position angulaire choisie lors de la deuxième étape, et ce même après plusieurs vissages et dévissages successifs grâce au contact rigide entre la portée 23b et l'extrémité 24c de la partie interne 24.The seal 9 is then positioned between the inner portion 24 and the clamping ring 25. Once the crown C is screwed on the tube 23, the distinctive sign S returns to the angular position chosen during the second step, even after several screwing operations. and successive unscrewing thanks to the rigid contact between the bearing surface 23b and the end 24c of the inner part 24.

Claims (8)

Boîte de montre comprenant : - une carrure (1), - un tube (3, 23) muni d'un filetage, solidaire de la carrure (1), - une couronne de commande (C) munie d'un filetage apte à être vissé sur le filetage dudit tube (3, 23), - la couronne de commande (C) comportant une partie externe (10, 20) présentant un signe distinctif (S) visible de l'extérieur et une partie interne (2, 24) logée à l'intérieur de la partie externe (10, 20) et munie dudit filetage apte à être vissé sur le filetage du tube (3, 23), l'une desdites parties comportant des moyens de liaison (5, 7) à une tige de commande (12), notamment à une tige de remontoir, et - des moyens de serrage (11, 25) pour maintenir ladite partie externe (10, 20) et ladite partie interne (2, 24) dans une position angulaire déterminée par rapport à l'axe longitudinal dudit tube,
caractérisée en ce que ladite partie interne (2, 24) comporte des premiers moyens d'indexage angulaire (2a, 24a), la partie externe (10, 20) comporte des seconds moyens d'indexage angulaire (10a, 20a), ces moyens d'indexage étant conformés pour s'engager axialement les uns dans les autres par déplacement axial relatif entre la partie interne (2, 24) et la partie externe (10, 20), ces moyens d'indexage étant maintenus engagés par lesdits moyens de serrage.
Watch box comprising: - a middle part (1), - a tube (3, 23) provided with a thread, integral with the middle part (1), - a control ring (C) provided with a thread adapted to be screwed onto the thread of said tube (3, 23), - the control ring (C) having an outer part (10, 20) having a distinctive sign (S) visible from the outside and an inner part (2, 24) housed inside the outer part (10, 20) and provided with said screwthreadable thread on the thread of the tube (3, 23), one of said parts having connecting means (5, 7) to a control rod (12), in particular to a rod of winding, and - clamping means (11, 25) for maintaining said outer portion (10, 20) and said inner portion (2, 24) in a predetermined angular position with respect to the longitudinal axis of said tube,
characterized in that said inner portion (2, 24) comprises first angular indexing means (2a, 24a), the outer portion (10, 20) comprises second angular indexing means (10a, 20a), these means indexing being shaped to engage axially in each other by relative axial displacement between the inner portion (2, 24) and the outer portion (10, 20), these indexing means being held engaged by said means of Tightening.
Boîte de montre selon la revendication 1, dans laquelle lesdits moyens d'indexage comportent deux surfaces circulaires coaxiales à l'axe longitudinal dudit tube, munies de dentures ou cannelures complémentaires et solidaires de ladite partie externe (10, 20), respectivement de ladite partie interne (2, 24).The watch case according to claim 1, wherein said indexing means comprise two circular surfaces coaxial with the longitudinal axis of said tube, provided with complementary teeth or grooves and integral with said outer portion (10, 20) respectively of said inner portion (2, 24). Boîte de montre selon l'une des revendications précédentes, dans laquelle lesdits moyens de serrage comportent une bague (11, 25) présentant d'une part un filetage (11a, 25a) en prise avec un filetage correspondant (10c, 20c) ménagé sur l'une desdites parties de la couronne et d'autre part une portée axiale (11b, 25b) en appui contre une butée axiale (2e, 24e) de l'autre desdites parties de la couronne.Watch case according to one of the preceding claims, wherein said clamping means comprise a ring (11, 25) having on the one hand a thread (11a, 25a) engaged with a corresponding thread (10c, 20c) arranged on one of said parts of the crown and secondly an axial bearing (11b, 25b) bearing against an axial abutment (2e, 24e) of the other of said parts of the ring. Boîte de montre selon l'une des revendications précédentes, dans laquelle la position vissée de la couronne (C) sur ledit tube (3, 23) est définie par le contact rigide de deux faces (2c, 3b; 23b, 24c) perpendiculaires à l'axe longitudinal dudit tube (3, 23).Watch case according to one of the preceding claims, in which the screwed position of the ring gear (C) on said tube (3, 23) is defined by the rigid contact of two faces (2c, 3b, 23b, 24c) perpendicular to the longitudinal axis of said tube (3, 23). Boîte de montre selon la revendication 3 ou 4, dans laquelle lesdites parties externe (10) et interne (2) présentent chacune un fond (2b, 10b) et une paroi latérale, la face interne de la paroi latérale (2h) de la partie interne (2) présentant le filetage (2d) en prise avec le filetage (3a) du tube (3), la face interne de la paroi latérale de la partie externe (10) présentant lesdits moyens d'indexage (10a) ainsi qu'un filetage (10c) situé entre l'extrémité ouverte de ladite paroi latérale et lesdits moyens d'indexage (10a), ce filetage (10c) étant en prise avec un filetage externe (11a) de ladite bague de serrage (11) dont le bord interne présente une portée axiale (11b) en appui axial contre une surface de butée axiale de la paroi latérale de la partie interne, le fond de ladite partie interne étant solidaire d'un manchon tubulaire (2i) comportant lesdits moyens de liaison (5, 7) à une tige de commande (12).A watch case according to claim 3 or 4, wherein said outer (10) and inner (2) portions each have a bottom (2b, 10b) and a side wall, the inner face of the side wall (2h) of the portion internal member (2) having the thread (2d) engaged with the thread (3a) of the tube (3), the inner face of the side wall of the outer part (10) having said indexing means (10a) and also a thread (10c) located between the open end of said side wall and said indexing means (10a), said thread (10c) being engaged with an external thread (11a) of said clamping ring (11) whose inner edge has an axial bearing (11b) in axial abutment against an axial abutment surface of the side wall of the inner part, the bottom of said inner part being integral with a tubular sleeve (2i) having said connecting means (5); , 7) to a control rod (12). Boîte de montre selon la revendication 5, dans laquelle la partie interne (2) présente un logement annulaire (2f) dans lequel prend place un joint annulaire (13), ce logement annulaire étant limité intérieurement par la face externe dudit tube (3) qui se termine par une surface tronconique (3d).A watch case according to claim 5, wherein the inner portion (2) has an annular housing (2f) in which an annular seal (13) annular housing being internally limited by the outer face of said tube (3) which terminates in a frustoconical surface (3d). Boîte de montre selon l'une des revendications 1 à 3, dans laquelle le fond de ladite partie externe (20) comporte un fond solidaire d'un manchon tubulaire (20h) comportant lesdits moyens de liaison (15, 17) à une tige de commande (12), la face externe de ce manchon tubulaire (20h) présentant un filetage (20c) sur lequel est vissé ledit organe de serrage (25), ladite partie interne (24) présentant la forme d'une bague cylindrique (24) dont la face interne présente une face de butée axiale (24e) en contact avec une portée (25b) dudit organe de serrage (25), la face interne de cette bague cylindrique comportant un filetage (24d) vissé sur le filetage (23a) dudit tube (23), la face externe de cette bague cylindrique (24) comportant lesdits moyens d'indexage (24a) en prise avec les moyens d'indexage (20a) ménagé sur la face interne de la paroi latérale solidaire de la périphérie du fond de ladite partie externe (20).Watch case according to one of claims 1 to 3, wherein the bottom of said outer portion (20) comprises a bottom secured to a tubular sleeve (20h) having said connecting means (15, 17) to a rod of control (12), the outer face of this tubular sleeve (20h) having a thread (20c) on which is screwed said clamping member (25), said inner portion (24) having the shape of a cylindrical ring (24) whose inner face has an axial abutment face (24e) in contact with a bearing surface (25b) of said clamping member (25), the internal face of this cylindrical ring having a thread (24d) screwed onto the thread (23a) of said tube (23), the outer face of this cylindrical ring (24) comprising said indexing means (24a) engaged with the indexing means (20a) formed on the inner face of the side wall secured to the periphery of the bottom of said outer portion (20). Boîte de montre selon la revendication 3, dans laquelle lesdits moyens de serrage (11, 25) comportent des moyens (11c, 25c) pour permettre à un outil de serrage de venir en prise avec les moyens de serrage (11, 25).A watch case according to claim 3, wherein said clamping means (11, 25) includes means (11c, 25c) for allowing a clamping tool to engage the clamping means (11, 25).
EP20100405173 2010-05-04 2010-09-16 Watch-case Withdrawn EP2385432A2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP20100405173 EP2385432A2 (en) 2010-05-04 2010-09-16 Watch-case
PCT/CH2011/000094 WO2011137544A2 (en) 2010-05-04 2011-04-28 Watch case
JP2013508342A JP5744184B2 (en) 2010-05-04 2011-04-28 Watch case
US13/643,462 US8882342B2 (en) 2010-05-04 2011-04-28 Watch case
EP11722285.1A EP2567292B1 (en) 2010-05-04 2011-04-28 Watch case
CH00728/11A CH703089B1 (en) 2010-05-04 2011-04-28 Watchcase.
CN201180022439.9A CN102971679B (en) 2010-05-04 2011-04-28 Watch case

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EP10405094 2010-05-04
EP20100405173 EP2385432A2 (en) 2010-05-04 2010-09-16 Watch-case

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EP3279745A1 (en) * 2016-08-02 2018-02-07 Meco S.A. Adjustable threaded crown
EP3451079A1 (en) * 2017-09-01 2019-03-06 Omega SA Device for orienting a valve for a timepiece
EP3805871A1 (en) * 2019-10-09 2021-04-14 Meco S.A. Adjustable threaded crown
EP3805872A1 (en) * 2019-10-09 2021-04-14 Meco S.A. Adjustable threaded crown
EP3825778A1 (en) * 2019-11-21 2021-05-26 The Swatch Group Research and Development Ltd Control crown for a timepiece
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WO2012168243A1 (en) * 2011-06-08 2012-12-13 Omega Sa Device for orientating a screwed element of a timepiece
CN104769511A (en) * 2012-11-02 2015-07-08 奥米加股份有限公司 Device for orientating a screwed element of a timepiece
CN104769511B (en) * 2012-11-02 2017-06-13 奥米加股份有限公司 For the device of the orientation of the screw-in element of clock and watch
CN107678268B (en) * 2016-08-02 2020-04-10 Meco有限公司 Orientable screw-in crown
EP3279745A1 (en) * 2016-08-02 2018-02-07 Meco S.A. Adjustable threaded crown
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EP3451079A1 (en) * 2017-09-01 2019-03-06 Omega SA Device for orienting a valve for a timepiece
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EP3805871A1 (en) * 2019-10-09 2021-04-14 Meco S.A. Adjustable threaded crown
EP3805872A1 (en) * 2019-10-09 2021-04-14 Meco S.A. Adjustable threaded crown
EP3825778A1 (en) * 2019-11-21 2021-05-26 The Swatch Group Research and Development Ltd Control crown for a timepiece
US11243498B2 (en) 2019-11-21 2022-02-08 The Swatch Group Research And Development Ltd Control crown for a timepiece
CN113775758A (en) * 2020-06-10 2021-12-10 Meco有限公司 Sealing device

Also Published As

Publication number Publication date
EP2567292A2 (en) 2013-03-13
US20130100782A1 (en) 2013-04-25
JP2013525802A (en) 2013-06-20
WO2011137544A3 (en) 2012-01-05
CN102971679A (en) 2013-03-13
JP5744184B2 (en) 2015-07-01
CN102971679B (en) 2014-12-10
CH703089B1 (en) 2015-11-13
US8882342B2 (en) 2014-11-11
WO2011137544A2 (en) 2011-11-10
CH703089A2 (en) 2011-11-15
EP2567292B1 (en) 2016-05-25

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