EP1558972A2 - Device for coupling a pinion - Google Patents

Device for coupling a pinion

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Publication number
EP1558972A2
EP1558972A2 EP03753202A EP03753202A EP1558972A2 EP 1558972 A2 EP1558972 A2 EP 1558972A2 EP 03753202 A EP03753202 A EP 03753202A EP 03753202 A EP03753202 A EP 03753202A EP 1558972 A2 EP1558972 A2 EP 1558972A2
Authority
EP
European Patent Office
Prior art keywords
pinion
coupling
coupling block
bearing
rod
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP03753202A
Other languages
German (de)
French (fr)
Other versions
EP1558972B1 (en
Inventor
Lucas Humair
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.)
Fore Eagle Co Ltd
Original Assignee
Fore Eagle Co Ltd
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 Fore Eagle Co Ltd filed Critical Fore Eagle Co Ltd
Publication of EP1558972A2 publication Critical patent/EP1558972A2/en
Application granted granted Critical
Publication of EP1558972B1 publication Critical patent/EP1558972B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G04B3/046—Operation by rotation and axial movement with extra function of axial shift of operating element, e.g. crown combined with push button
    • 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
    • G04B27/00—Mechanical devices for setting the time indicating means
    • G04B27/02—Mechanical devices for setting the time indicating means by making use of the winding means
    • G04B27/04—Mechanical devices for setting the time indicating means by making use of the winding means with clutch wheel

Definitions

  • the present invention relates to a device for coupling a pinion on a control rod, particularly a pinion intended to control any function, in particular a change of date, on a timepiece and more particularly on a wristwatch. .
  • the known devices enabling this operation are generally of relatively complicated design, in particular requiring one or more movable pullbars held in position by one or more springs. These devices generally require a particular adjustment, they are therefore expensive and moreover use an important place in the movement of the watch.
  • An object of the present invention is therefore to provide a device for coupling a pinion on a rod improved compared to known devices, that is to say free of the drawbacks mentioned above.
  • Another object of the invention is to propose a device for coupling a pinion on a rod which is simple to manufacture, inexpensive, requiring few moving parts, being absolutely reliable in use and using only minimum space.
  • a coupling device as described in the independent claim, particular variants and embodiments being described in the dependent claims.
  • Figure 1 is a side view of a winding stem forming part of a coupling device according to the invention
  • Figure 2 is a section along line II-II of the previous figure
  • Figure 3 is a view front view of a pinion forming part of a coupling device according to the invention
  • FIG. 4 is a section along the line IV-IV of FIG. 3
  • FIG. 5 is a section along the line VV of the figure 3
  • FIG. 6 is a view of the rod-pinion assembly in the uncoupled state
  • FIG. 7 is a view of the same assembly in the coupled state.
  • the winding stem 1 of FIG. 1 is a slender element essentially comprising a cylindrical uncoupling surface
  • the coupling block 11 fixed on a bearing surface 12 following the uncoupling bearing surface 10.
  • the coupling block 11 has here the general shape of a parallelepiped with a square base, the dimension A on the side of the square being worth the value D defined above, as can be seen particularly in FIG. 2.
  • the height H of the parallelepiped is preferably equivalent or shorter than the length L mentioned above.
  • the portion of the coupling block 11 turned towards the uncoupling surface 10 is cut so as to present two symmetrical oblique faces 110 and 111, acting as guide surfaces as will be seen below and having an angle at the top ⁇ between them, the edge common to the two faces 110 and 111 being drawn along a diagonal of the coupling block.
  • the coupling block 11 is directly contiguous with the uncoupling surface 10, the edge separating the two oblique faces 110 and 111 being in contact with the front face of the decoupling surface.
  • the winding stem 1 may also include other scopes according to other functions which are assigned to it, such as, for example, pull tab controls or the like.
  • the winding stem is here equipped with a clearance range 13 limited by two bearing ranges of stops 14 and 15, the usefulness of which will be described below.
  • a winding crown 16 is fixed to the end of the winding stem 1 projecting from the housing, not shown in the figure. Other components such as the bearings supporting the winding stem are not shown in the figures.
  • the pinion 2 seen from the front in FIG. 3 and in two sections in FIGS. 4 and 5 essentially comprises a toothed pinion wheel 20 whose central portion is extended by a bearing 21 cut in the shape of a pyramid.
  • the center of the pinion wheel 20 as well as of the bearing surface 21 are pierced with a hole 22, the cross section of which is square and whose edges have a length A + , slightly greater than the length A of the edge of the square forming the cross section of the coupling block 11, respectively of the diameter D of the uncoupling bearing surface 10.
  • the bearing surface 21 is cut in the shape of a pyramid with a square cross section, the base of the pyramid being disposed against the side of the wheel toothed pinion 20, the edges of said square section forming an angle of 45 ° with the edges of the square of the hole 22.
  • the intersection of the faces of the pyramid with a square cross section and the peripheral surfaces of the hole is cut in the shape of a pyramid with a square cross section, the base of the pyramid being disposed against the side of the wheel toothed pinion 20, the edges of said square section forming an angle of 45 ° with the edges of the square of the hole 22.
  • opposite oblique faces 210 and 211 as seen in FIGS. 4 and 5, having an angle ⁇ between them.
  • this angle ⁇ is equal to that described above.
  • the opposite oblique faces 210 and 211 will act as bearing surfaces as described below.
  • the axial length B of the pinion 2 - see Figure 4- is preferably equivalent to the height H of the coupling block 11.
  • the pinion can first of all slide on the cylindrical bearing surface 10 having regard to the relative dimensions of the hole 22 and of the bearing surface 10. Then, one of the oblique bearing surfaces 210 or 211 of the bearing surface 21 of the pinion 2 is entered in contact with one of the two symmetrical oblique guide surfaces 110 or 111 of the coupling block 11.
  • the traction movement which is applied to the rod 1 tends to rotate the pinion 2 by sliding one of the bearing surfaces 210 or 211 against the guide surface 110 or 111 against which it abuts, so as to align the square shape of the hole 22 of the pinion 2 with the square shape of the base of the coupling block 11.
  • the axial movement of the rod 1 is limited, in the example considered, by the stop 17, fixed to the housing and the two bearing surfaces 14 and 15.
  • the length of the clearance bearing 13 is therefore determined in order to allow the positioning of the pinion either on the uncoupling surface 10, or on the coupling block 11.
  • the length L - FIG. 1 - of the cylindrical surface is slightly longer than the thickness B - FIG. 4 - of the pinion 2 in order to avoid inadvertent contact of the edges limiting the bearing surfaces 210 and 211 of the pinion 2 against the edges limiting the guide surfaces 110 and 111 of the coupling block 11.
  • the winding stem 1 has two working positions, shown in FIGS. 6 and 7.
  • a winding stem having more than two working positions, each of the positions determining a function particular, the last of these working positions acting on the pinion as indicated above.
  • a decoupling span 10 of sufficient length to allow the pinion to be positioned in several successive positions in the uncoupled state.
  • the coupling block 11 has two symmetrical oblique surfaces of guide 110 and 111; similar operation of the device could also be obtained with a coupling block comprising four symmetrical oblique guide surfaces, each pair of surfaces being cut on either side of a diagonal of the coupling block.
  • the device has been described with a square base coupling block cooperating with a pinion provided with a square hole.
  • An equivalent device could also be obtained with a coupling block having a base in the form of any polygon, cooperating with a pinion provided with a hole of similar shape cut in a bearing of suitable pyramidal shape.
  • the coupling between the pinion and the rod can be done according to a plurality of relative angular positions, while in the case of an irregular polygonal shape the coupling between the pinion and the rod can only be done in one angular position. This latter possibility may be advantageous for certain particular applications.
  • the rod 1 has been described above as comprising a coupling block 11 manufactured separately and fixed on the bearing surface 12 of the rod; we could just as easily have the complete element, rod and coupling block, made in one piece, for example by injection.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Operated Clutches (AREA)
  • Transmission Devices (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Gears, Cams (AREA)
  • Gear Transmission (AREA)
  • Motor Power Transmission Devices (AREA)

Abstract

The invention concerns a coupling device whereof the stem (1) comprises an uncoupling cylindrical shaft (10) as well as a coupling block (11) having a polygonal cross-section and oblique guide surfaces (110, 111). The pinion (2) comprises a central orifice (22) whereof the cross-section corresponds to that of the coupling block polygon and oblique support surfaces (210, 211). The pinion is adapted to slide relative to the stem, from an uncoupling position on the cylindrical shaft up to a coupling position on the coupling block. The transition between those two positions is ensured by the oblique support surfaces (210, 211) sliding on the oblique guide surfaces (110, 111).

Description

Dispositif d'accouplement d'un pignon. Device for coupling a pinion.
La présente invention concerne un dispositif d'accouplement d'un pignon sur une tige de commande, particulièrement d'un pignon destiné à commander une fonction quelconque, notamment un changement de date, sur une pièce d'horlogerie et plus particulièrement sur une montre bracelet.The present invention relates to a device for coupling a pinion on a control rod, particularly a pinion intended to control any function, in particular a change of date, on a timepiece and more particularly on a wristwatch. .
Il est connu d'effectuer une correction de la date affichée sur un cadran de montre, lorsque le mois précédent comporte 28, 29 ou 30 jours, de manière à afficher le quantième 1 du nouveau mois. Généralement cette correction se fait en appliquant une traction sur la couronne de la tige du remontoir de manière à accoupler un pignon à ladite tige de remontoir, afin qu'en appliquant ensuite un mouvement de rotation à la couronne de remontoir, cette rotation soit transmise au pignon qui à son tour commande la rotation du disque d'affichage du quantième de manière à afficher la date voulue.It is known to correct the date displayed on a watch dial, when the previous month has 28, 29 or 30 days, so as to display the date 1 of the new month. Generally this correction is done by applying a traction on the crown of the winding stem so as to couple a pinion to said winding stem, so that by then applying a rotation movement to the winding crown, this rotation is transmitted to the pinion which in turn controls the rotation of the date display disc so as to display the desired date.
Les dispositifs connus permettant cette opération sont généralement de conception relativement compliquée, nécessitant notamment une ou plusieurs tirettes mobiles maintenues en position par un ou plusieurs ressorts. Ces dispositifs nécessitent généralement un réglage particulier, ils sont donc onéreux et par ailleurs utilisent une place importante dans le mouvement de la montre.The known devices enabling this operation are generally of relatively complicated design, in particular requiring one or more movable pullbars held in position by one or more springs. These devices generally require a particular adjustment, they are therefore expensive and moreover use an important place in the movement of the watch.
Un but de la présente invention est donc de proposer un dispositif d'accouplement d'un pignon sur une tige amélioré par rapport aux dispositifs connu, c'est-à-dire exempt des inconvénients mentionnés ci- dessus.An object of the present invention is therefore to provide a device for coupling a pinion on a rod improved compared to known devices, that is to say free of the drawbacks mentioned above.
Un autre but de l'invention est de proposer un dispositif d'accouplement d'un pignon sur une tige qui soit simple de fabrication, peu coûteux, nécessitant peu de pièces mobiles, étant absolument fiable à l'emploi et n'utilisant qu'un minimum de place. A cet effet il est proposé un dispositif d'accouplement tel que décrit dans la revendication indépendante, des variantes et formes d'exécution particulières étant décrites dans les revendications dépendantes.Another object of the invention is to propose a device for coupling a pinion on a rod which is simple to manufacture, inexpensive, requiring few moving parts, being absolutely reliable in use and using only minimum space. To this end, there is proposed a coupling device as described in the independent claim, particular variants and embodiments being described in the dependent claims.
Une forme d'exécution particulière d'un dispositif d'accouplement selon l'invention est décrite plus en détail ci-après, présentant encore d'autres avantages que ceux mentionnés précédemment, cette description étant à considérer en regard du dessin annexé comportant les figures où :A particular embodiment of a coupling device according to the invention is described in more detail below, having still other advantages than those mentioned above, this description being to be considered with reference to the accompanying drawing comprising the figures or :
la figure 1 est une vue latérale d'une tige de remontoir faisant partie d'un dispositif d'accouplement selon l'invention, la figure 2 est une coupe selon la ligne ll-ll de la figure précédente, la figure 3 est une vue de face d'un pignon faisant partie d'un dispositif d'accouplement selon l'invention, la figure 4 est une coupe selon la ligne IV-IV de la figure 3, la figure 5 est une coupe selon la ligne V-V de la figure 3, la figure 6 est une vue de l'ensemble tige - pignon à l'état désaccouplé, et la figure 7 est une vue du même ensemble à l'état accouplé.Figure 1 is a side view of a winding stem forming part of a coupling device according to the invention, Figure 2 is a section along line II-II of the previous figure, Figure 3 is a view front view of a pinion forming part of a coupling device according to the invention, FIG. 4 is a section along the line IV-IV of FIG. 3, FIG. 5 is a section along the line VV of the figure 3, FIG. 6 is a view of the rod-pinion assembly in the uncoupled state, and FIG. 7 is a view of the same assembly in the coupled state.
La tige de remontoir 1 de la figure 1 est un élément longiligne comprenant essentiellement une portée cylindrique de désaccouplementThe winding stem 1 of FIG. 1 is a slender element essentially comprising a cylindrical uncoupling surface
10 présentant une section droite circulaire ayant un diamètre D et une longueur L ainsi qu'un bloc d'accouplement 11 fixé sur une portée 12 faisant suite à la portée de désaccouplement 10. Le bloc d'accouplement10 having a circular cross section having a diameter D and a length L as well as a coupling block 11 fixed on a bearing surface 12 following the uncoupling bearing surface 10. The coupling block
11 a ici la forme générale d'un parallélépipède de base carrée, la dimension A du côté du carré valant la valeur D définie ci-dessus, comme on le voit particulièrement à la figure 2. La hauteur H du parallélépipède est de préférence équivalente ou inférieure à la longueur L mentionnée plus haut. La portion du bloc d'accouplement 11 tournée vers la portée de désaccouplement 10 est coupée de manière à présenter deux faces obliques symétriques 110 et 111 , faisant office de surfaces de guidage comme on le verra plus loin et ayant entre elles un angle au sommet α, l'arête commune aux deux faces 110 et 111 étant tirée selon une diagonale du bloc d'accouplement. De préférence le bloc d'accouplement 11 est directement contigu de la portée de désaccouplement 10, l'arête séparant les deux faces obliques 110 et 111 étant en contact avec la face frontale de la portée de désaccouplement.11 has here the general shape of a parallelepiped with a square base, the dimension A on the side of the square being worth the value D defined above, as can be seen particularly in FIG. 2. The height H of the parallelepiped is preferably equivalent or shorter than the length L mentioned above. The portion of the coupling block 11 turned towards the uncoupling surface 10 is cut so as to present two symmetrical oblique faces 110 and 111, acting as guide surfaces as will be seen below and having an angle at the top α between them, the edge common to the two faces 110 and 111 being drawn along a diagonal of the coupling block. Preferably, the coupling block 11 is directly contiguous with the uncoupling surface 10, the edge separating the two oblique faces 110 and 111 being in contact with the front face of the decoupling surface.
La tige de remontoir 1 peut comprendre encore d'autres portées selon d'autres fonctions qui lui sont attribuées comme par exemple des commandes de tirettes ou autres. A titre illustratif, la tige de remontoir est équipée ici d'une portée de débattement 13 limitée par deux portées de butées 14 et 15.dont l'utilité sera décrite plus bas. De manière conventionnelle, une couronne de remontoir 16 est fixée à l'extrémité de la tige de remontoir 1 faisant saillie hors du boîtier, non représenté sur la figure. D'autres composants tels que les paliers supportant la tige de remontoir ne sont pas représentés sur les figures.The winding stem 1 may also include other scopes according to other functions which are assigned to it, such as, for example, pull tab controls or the like. By way of illustration, the winding stem is here equipped with a clearance range 13 limited by two bearing ranges of stops 14 and 15, the usefulness of which will be described below. Conventionally, a winding crown 16 is fixed to the end of the winding stem 1 projecting from the housing, not shown in the figure. Other components such as the bearings supporting the winding stem are not shown in the figures.
Le pignon 2 vu de face à la figure 3 et selon deux coupes aux figures 4 et 5 comprend essentiellement une roue de pignon denté 20 dont la portion centrale est prolongée d'une portée 21 taillée en forme de pyramide. Le centre de la roue de pignon 20 ainsi que de la portée 21 sont percés d'un trou 22 dont la section droite est de forme carrée et dont les arêtes ont une longueur A+, légèrement supérieure à la longueur A de l'arête du carré formant la section droite du bloc d'accouplement 11 , respectivement du diamètre D de la portée de désaccouplement 10. La portée 21 est taillée en forme de pyramide à section droite carrée, la base de la pyramide étant disposée contre le flanc de la roue de pignon denté 20, les arêtes de ladite section carrée formant un angle de 45° avec les arêtes du carré du trou 22. L'intersection des faces de la pyramide à section droite carrée et des surfaces périphériques du trouThe pinion 2 seen from the front in FIG. 3 and in two sections in FIGS. 4 and 5 essentially comprises a toothed pinion wheel 20 whose central portion is extended by a bearing 21 cut in the shape of a pyramid. The center of the pinion wheel 20 as well as of the bearing surface 21 are pierced with a hole 22, the cross section of which is square and whose edges have a length A + , slightly greater than the length A of the edge of the square forming the cross section of the coupling block 11, respectively of the diameter D of the uncoupling bearing surface 10. The bearing surface 21 is cut in the shape of a pyramid with a square cross section, the base of the pyramid being disposed against the side of the wheel toothed pinion 20, the edges of said square section forming an angle of 45 ° with the edges of the square of the hole 22. The intersection of the faces of the pyramid with a square cross section and the peripheral surfaces of the hole
22 crée des faces obliques opposées 210 et 211, comme on les voit aux figures 4 et 5, ayant entre elles un angle α. De préférence cet angle α est égal à celui décrit précédemment. Les faces obliques opposées 210 et 211 feront office de surfaces d'appui comme décrit plus loin.22 creates opposite oblique faces 210 and 211, as seen in FIGS. 4 and 5, having an angle α between them. Preferably this angle α is equal to that described above. The opposite oblique faces 210 and 211 will act as bearing surfaces as described below.
La longueur axiale B du pignon 2 -voir figure 4- est de préférence équivalente à la hauteur H du bloc d'accouplement 11.The axial length B of the pinion 2 - see Figure 4- is preferably equivalent to the height H of the coupling block 11.
Le fonctionnement du dispositif est décrit aux figures 6 et 7.The operation of the device is described in Figures 6 and 7.
Sur la figure 6 on voit que le pignon 2 est disposé sur la portée cylindrique de désaccouplement 10 de la tige 1. Vu que l'arête du trou 22 du pignon 2 a une valeur A+ très légèrement supérieur au diamètre D de la portée 10, le pignon 2 est désaccouplé de cette portée 10 ainsi que de la tige 1 , ces deux éléments pouvant pivoter indépendamment l'un de l'autre. Ainsi, dans la position représentée à cette figure, la tige 1 peut par exemple commander le mouvement des aiguilles de la pièce d'horlogerie, par un mécanisme connu en soi non représenté sur la figure, sans actionner le pignon 2.In Figure 6 we see that the pinion 2 is disposed on the cylindrical uncoupling surface 10 of the rod 1. Since the edge of the hole 22 of the pinion 2 has a value A + very slightly greater than the diameter D of the surface 10 , the pinion 2 is uncoupled from this bearing 10 as well as from the rod 1, these two elements being able to pivot independently of one another. Thus, in the position shown in this figure, the rod 1 can for example control the movement of the hands of the timepiece, by a mechanism known per se not shown in the figure, without actuating the pinion 2.
On voit par ailleurs que le pignon 2 et maintenu selon une position axiale fixe relativement au boîtier par des butées schématisées en 25.It can also be seen that the pinion 2 is held in a fixed axial position relative to the housing by stops shown diagrammatically at 25.
A la figure 7, on voit que l'on a retiré la tige 1 d'une longueur C en agissant sur le remontoir 16 dans le sens indiqué par la flèche. Vu que le pignon 2 est maintenu axialement par les butées 25. il ne s'est pas déplacé et c'est la tige 1 qui a glissé à l'intérieur du trou 22 du pignon 2.In Figure 7, we see that we removed the rod 1 of a length C by acting on the winder 16 in the direction indicated by the arrow. Since the pinion 2 is held axially by the stops 25. it has not moved and it is the rod 1 which has slipped inside the hole 22 of the pinion 2.
Pour ceci, le pignon peut tout d'abord coulisser sur la portée cylindrique 10 vu les dimensions relatives du trou 22 et de la portée 10. Ensuite, une des surfaces obliques d'appui 210 ou 211 de la portée 21 du pignon 2 est entrée en contact avec une des deux surfaces obliques symétriques de guidage 110 ou 111 du bloc d'accouplement 11. Le mouvement de traction qui est appliqué à la tige 1 tend à faire pivoter le pignon 2 par glissement d'une des surfaces d'appui 210 ou 211 contre la surface de guidage 110 ou 111 contre laquelle elle bute, de manière à aligner la forme carrée du trou 22 du pignon 2 sur la forme carrée de la base du bloc d'accouplement 11. Ce mouvement se termine lorsque le pignon 2 est entièrement positionné sur le bloc d'accouplement 11 et que le trou carré 22 recouvre entièrement les faces de la base carrée du bloc d'accouplement. En imprimant une rotation à la couronne 16, le pignon 2 est entraîné en rotation par la coopération du trou carré 22 sur la base carrée du bloc d'accouplement 11.For this, the pinion can first of all slide on the cylindrical bearing surface 10 having regard to the relative dimensions of the hole 22 and of the bearing surface 10. Then, one of the oblique bearing surfaces 210 or 211 of the bearing surface 21 of the pinion 2 is entered in contact with one of the two symmetrical oblique guide surfaces 110 or 111 of the coupling block 11. The traction movement which is applied to the rod 1 tends to rotate the pinion 2 by sliding one of the bearing surfaces 210 or 211 against the guide surface 110 or 111 against which it abuts, so as to align the square shape of the hole 22 of the pinion 2 with the square shape of the base of the coupling block 11. This movement ends when the pinion 2 is fully positioned on the coupling block 11 and that the hole square 22 completely covers the faces of the square base of the coupling block. By rotating the crown 16, the pinion 2 is rotated by the cooperation of the square hole 22 on the square base of the coupling block 11.
Le mouvement axial de la tige 1 est limité, dans l'exemple considéré, par la butée 17, fixée au boîtier et les deux portées 14 et 15. La longueur de la portée de débattement 13 est donc déterminée afin de permettre le positionnement du pignon soit sur la portée de désaccouplement 10, soit sur le bloc d'accouplement 11. Dans l'exemple considéré comme on le voit à la figure 6, la longueur L - figure 1 - de la portée cylindrique est légèrement plus longue que l'épaisseur B - figure 4 - du pignon 2 afin d'éviter un contact intempestif des arêtes limitant les surfaces d'appui 210 et 211 du pignon 2 contre les arêtes limitant les surfaces de guidage 110 et 111 du bloc d'accouplement 11.The axial movement of the rod 1 is limited, in the example considered, by the stop 17, fixed to the housing and the two bearing surfaces 14 and 15. The length of the clearance bearing 13 is therefore determined in order to allow the positioning of the pinion either on the uncoupling surface 10, or on the coupling block 11. In the example considered as seen in FIG. 6, the length L - FIG. 1 - of the cylindrical surface is slightly longer than the thickness B - FIG. 4 - of the pinion 2 in order to avoid inadvertent contact of the edges limiting the bearing surfaces 210 and 211 of the pinion 2 against the edges limiting the guide surfaces 110 and 111 of the coupling block 11.
Toujours dans l'exemple considéré ici, la tige de remontoir 1 possède deux positions de travail, représentées aux figures 6 et 7. On pourrait tout aussi bien avoir une tige de remontoir possédant plus de deux positions de travail, chacun des positions déterminant une fonction particulière, la dernière de ces positions de travail agissant sur le pignon comme indiqué précédemment. Pour ceci il suffit d'avoir une portée de désaccouplement 10 de longueur suffisante pour permettre de positionner le pignon selon plusieurs positions successives à l'état désaccouplé.Still in the example considered here, the winding stem 1 has two working positions, shown in FIGS. 6 and 7. We could just as easily have a winding stem having more than two working positions, each of the positions determining a function particular, the last of these working positions acting on the pinion as indicated above. For this it suffices to have a decoupling span 10 of sufficient length to allow the pinion to be positioned in several successive positions in the uncoupled state.
L'accouplement du pignon 2 sur la tige 1 est décrit ci-dessus en effectuant une traction sur la couronne de remontoir. Un fonctionnement semblable pourrait être obtenu en inversant la disposition de la portée de désaccouplement 10 relativement au bloc d'accouplement 11 et en effectuant une poussée sur la couronne de remontoir pour accoupler le pignon sur la tige.The coupling of the pinion 2 on the rod 1 is described above by pulling on the winding crown. A similar operation could be obtained by reversing the arrangement of the uncoupling surface 10 relative to the coupling block 11 and by pushing on the winding crown to couple the pinion on the stem.
Dans la forme d'exécution décrite ci-dessus, le bloc d'accouplement 11 comporte deux surfaces obliques symétriques de guidage 110 et 111 ; un fonctionnement semblable du dispositif pourrait aussi être obtenu avec un bloc d'accouplement comportant quatre surfaces obliques symétriques de guidage, chaque paire de surfaces étant taillée de part et d'autre d'une diagonale du bloc d'accouplement.In the embodiment described above, the coupling block 11 has two symmetrical oblique surfaces of guide 110 and 111; similar operation of the device could also be obtained with a coupling block comprising four symmetrical oblique guide surfaces, each pair of surfaces being cut on either side of a diagonal of the coupling block.
De même, le dispositif a été décrit avec un bloc d'accouplement à base carrée coopérant avec un pignon muni d'un trou carré. Un dispositif équivalent pourrait aussi être obtenu avec un bloc d'accouplement ayant une base sous la forme d'un polygone quelconque, coopérant avec un pignon muni d'un trou de forme semblable taillé dans une portée de forme pyramidale adaptée. Dans le cas d'une forme polygonale régulière, l'accouplement entre le pignon et la tige peut se faire selon une pluralité de positions angulaires relatives, alors que dans le cas d'une forme polygonale irrégulière l'accouplement entre le pignon et la tige ne peut se faire que selon une seule position angulaire. Cette dernière possibilité peut être avantageuse pour certaines applications particulières.Similarly, the device has been described with a square base coupling block cooperating with a pinion provided with a square hole. An equivalent device could also be obtained with a coupling block having a base in the form of any polygon, cooperating with a pinion provided with a hole of similar shape cut in a bearing of suitable pyramidal shape. In the case of a regular polygonal shape, the coupling between the pinion and the rod can be done according to a plurality of relative angular positions, while in the case of an irregular polygonal shape the coupling between the pinion and the rod can only be done in one angular position. This latter possibility may be advantageous for certain particular applications.
La tige 1 a été décrite ci-dessus comme comportant un bloc d'accouplement 11 fabriqué séparément et fixé sur la portée 12 de la tige ; on pourrait tout aussi bien avoir l'élément complet, tige et bloc d'accouplement, fabriqué en une seule pièce, par exemple par injection. The rod 1 has been described above as comprising a coupling block 11 manufactured separately and fixed on the bearing surface 12 of the rod; we could just as easily have the complete element, rod and coupling block, made in one piece, for example by injection.

Claims

Revendications claims
1. Dispositif d'accouplement d'un pignon (2) sur une tige (1), caractérisé en ce que la tige comprend une portée de désaccouplement cylindrique (10) et un bloc d'accouplement (11) disposés successivement selon l'axe longitudinal de la tige, le bloc d'accouplement (11) présentant une section droite perpendiculaire à l'axe longitudinal de la tige ayant une forme polygonale, la portion du bloc d'accouplement tournée vers la portée de désaccouplement cylindrique étant taillée selon une pluralité de surfaces obliques de guidage (110, 111 ), la portée de désaccouplement cylindrique présentant une section droite perpendiculaire à l'axe longitudinal de la tige ayant une forme circulaire dont le diamètre est exactement inscrit dans la forme polygonale du bloc d'accouplement, le pignon (2) comportant une roue de pignon denté (20) prolongée par une portée (21), la roue de pignon denté (20) et la portée (21) étant traversés d'un trou (22) ayant une section droite de même forme polygonale que le bloc d'accouplement (11) disposé selon l'axe longitudinal du pignon, la surface extérieure de la portée étant taillée selon une forme pyramidale de section droite polygonale de même forme que celle du trou (22), la base de la pyramide étant accolée au flanc de la roue de pignon, les côtés de la pyramide étant décalés symétriquement par rapport aux côtés du trou, de manière à présenter une pluralité de surfaces d'appui obliques (210, 211) orientées de manière à coopérer avec les surfaces obliques de guidage (110,111) du bloc d'accouplement, le pignon (2) et la tige (1) étant aptes à avoir entre eux un mouvement relatif de translation selon leur axe longitudinal commun, le pignon étant en position désaccouplée lorsqu'il est situé sur la portée de désaccouplement cylindrique (10) et en position accouplée lorsqu'il est situé sur le bloc d'accouplement (11), le pignon étant orientée angulairement lors du passage de la portée de désaccouplement au bloc d'accouplement par les surfaces d'appui obliques (210, 211) du pignon en glissement contre les surfaces obliques de guidage (110,111) du bloc d'accouplement, un mouvement de rotation de la tige étant transmis au pignon en position accouplée, ce mouvement n'étant pas transmis en position désaccouplée.1. Device for coupling a pinion (2) to a rod (1), characterized in that the rod comprises a cylindrical uncoupling surface (10) and a coupling block (11) arranged successively along the axis longitudinal of the rod, the coupling block (11) having a cross section perpendicular to the longitudinal axis of the rod having a polygonal shape, the portion of the coupling block facing the cylindrical uncoupling surface being cut in a plurality of oblique guide surfaces (110, 111), the cylindrical uncoupling bearing surface having a cross section perpendicular to the longitudinal axis of the rod having a circular shape whose diameter is exactly inscribed in the polygonal shape of the coupling block, the pinion (2) comprising a toothed pinion wheel (20) extended by a bearing (21), the toothed pinion wheel (20) and the bearing (21) being traversed by a hole (22) having a cross section similarly polygonal shape as the coupling block (11) disposed along the longitudinal axis of the pinion, the outer surface of the bearing being cut in a pyramidal shape of polygonal cross section of the same shape as that of the hole (22), the base of the pyramid being attached to the side of the pinion wheel, the sides of the pyramid being offset symmetrically with respect to the sides of the hole, so as to present a plurality of oblique bearing surfaces (210, 211) oriented so as to cooperate with the oblique guide surfaces (110, 111) of the coupling block, the pinion (2) and the rod (1) being able to have between them a relative movement of translation along their common longitudinal axis, the pinion being in the uncoupled position when it is located on the cylindrical uncoupling surface (10) and in the coupled position when it is located on the coupling block (11), the pinion being oriented angularly when the range of d saccouplement at block coupling by the oblique bearing surfaces (210, 211) of the pinion sliding against the oblique guide surfaces (110,111) of the coupling block, a rotary movement of the rod being transmitted to the pinion in the coupled position, this movement not transmitted in the uncoupled position.
2. Dispositif d'accouplement selon la revendication 1 , caractérisé en ce que la forme polygonale de la section droite du bloc d'accouplement (11) ainsi que du trou (22) et de la pyramide de la portée du pignon est un polygone régulier.2. Coupling device according to claim 1, characterized in that the polygonal shape of the cross section of the coupling block (11) as well as the hole (22) and the pyramid of the bearing of the pinion is a regular polygon .
3. Dispositif d'accouplement selon la revendication 1, caractérisé en ce que la forme polygonale de la section droite du bloc d'accouplement (11) ainsi que du trou (22) et de la pyramide de la portée du pignon est un polygone irrégulier.3. Coupling device according to claim 1, characterized in that the polygonal shape of the cross section of the coupling block (11) as well as the hole (22) and the pyramid of the bearing of the pinion is an irregular polygon .
4. Dispositif d'accouplement selon la revendication 2, caractérisé en ce que la forme polygonale de la section droite du bloc d'accouplement4. Coupling device according to claim 2, characterized in that the polygonal shape of the cross section of the coupling block
(11) ainsi que du trou (22) et de la pyramide de la portée du pignon est un carré.(11) as well as the hole (22) and the pyramid of the bearing of the pinion is a square.
5. Dispositif d'accouplement selon la revendication 4, caractérisé en ce que le bloc d'accouplement (11) présente deux surfaces obliques de guidage (110,111) séparées par une arête disposée sur une diagonale de la forme carrée.5. Coupling device according to claim 4, characterized in that the coupling block (11) has two oblique guide surfaces (110,111) separated by an edge arranged on a diagonal of the square shape.
6. Dispositif d'accouplement selon l'une des revendications précédentes, caractérisé en ce que l'épaisseur (B) du pignon (2) est équivalente à la hauteur (H) du bloc d'accouplement (11).6. Coupling device according to one of the preceding claims, characterized in that the thickness (B) of the pinion (2) is equivalent to the height (H) of the coupling block (11).
7. Dispositif d'accouplement selon l'une des revendications précédentes, caractérisé en ce que la longueur (L) de la portée de désaccouplement (10) est au moins équivalente à l'épaisseur (B) du pignon (2). 7. Coupling device according to one of the preceding claims, characterized in that the length (L) of the uncoupling surface (10) is at least equivalent to the thickness (B) of the pinion (2).
8. Dispositif d'accouplement selon l'une des revendications précédentes destiné à commander une fonction sur une pièce d'horlogerie.8. Coupling device according to one of the preceding claims for controlling a function on a timepiece.
9. Pièce d'horlogerie munie d'un dispositif d'accouplement selon la revendication 8.9. Timepiece provided with a coupling device according to claim 8.
10. Montre bracelet munie d'un dispositif d'accouplement selon la revendication 8. 10. Wrist watch provided with a coupling device according to claim 8.
EP03753202A 2002-11-06 2003-10-24 Device for coupling a pinion Expired - Lifetime EP1558972B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH185702 2002-11-06
CH18572002 2002-11-06
PCT/CH2003/000698 WO2004042478A2 (en) 2002-11-06 2003-10-24 Device for coupling a pinion

Publications (2)

Publication Number Publication Date
EP1558972A2 true EP1558972A2 (en) 2005-08-03
EP1558972B1 EP1558972B1 (en) 2007-04-25

Family

ID=32304033

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03753202A Expired - Lifetime EP1558972B1 (en) 2002-11-06 2003-10-24 Device for coupling a pinion

Country Status (5)

Country Link
EP (1) EP1558972B1 (en)
AT (1) ATE360840T1 (en)
AU (1) AU2003271493A1 (en)
DE (1) DE60313483T2 (en)
WO (1) WO2004042478A2 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3111002A (en) * 1960-02-11 1963-11-19 Paul L Glocker Setting mechanism for watch movements
JPH05232252A (en) * 1992-02-20 1993-09-07 Casio Comput Co Ltd Time correction mechanism
KR19990088020A (en) * 1998-05-13 1999-12-27 에따 쏘시에떼 아노님 파브리끄 데보슈 Push button device for a timepiece in particular a chronograph
JP5025855B2 (en) * 2001-04-27 2012-09-12 セイコーインスツル株式会社 Arm portable equipment

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004042478A3 *

Also Published As

Publication number Publication date
ATE360840T1 (en) 2007-05-15
AU2003271493A1 (en) 2004-06-07
AU2003271493A8 (en) 2004-06-07
WO2004042478A3 (en) 2004-09-02
WO2004042478A2 (en) 2004-05-21
EP1558972B1 (en) 2007-04-25
DE60313483D1 (en) 2007-06-06
DE60313483T2 (en) 2008-01-03

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