EP3123251A1 - Control system for a timepiece - Google Patents

Control system for a timepiece

Info

Publication number
EP3123251A1
EP3123251A1 EP15708215.7A EP15708215A EP3123251A1 EP 3123251 A1 EP3123251 A1 EP 3123251A1 EP 15708215 A EP15708215 A EP 15708215A EP 3123251 A1 EP3123251 A1 EP 3123251A1
Authority
EP
European Patent Office
Prior art keywords
rotation
axis
rotating member
ring
toothing
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
EP15708215.7A
Other languages
German (de)
French (fr)
Other versions
EP3123251B1 (en
Inventor
Philipp Tschumi
Sébastien Briswalter
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.)
Swatch Group Management Services AG
Original Assignee
Swatch Group Management Services AG
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 Swatch Group Management Services AG filed Critical Swatch Group Management Services AG
Publication of EP3123251A1 publication Critical patent/EP3123251A1/en
Application granted granted Critical
Publication of EP3123251B1 publication Critical patent/EP3123251B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • G04B27/00—Mechanical devices for setting the time indicating means
    • G04B27/001—Internal gear therefor, e.g. for setting the second hand or for setting several clockworks
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B13/00—Gearwork
    • G04B13/02—Wheels; Pinions; Spindles; Pivots
    • G04B13/027—Wheels; Pinions; Spindles; Pivots planar toothing: shape and design
    • 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
    • G04B11/00—Click devices; Stop clicks; Clutches
    • G04B11/001—Clutch mechanism between two rotating members with transfer of movement in both directions, possibly with limitation on the transfer of power
    • G04B11/003—Clutch mechanism between two rotating members with transfer of movement in both directions, possibly with limitation on the transfer of power with friction member, e.g. with spring action
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B13/00—Gearwork
    • G04B13/02—Wheels; Pinions; Spindles; Pivots
    • G04B13/021—Wheels; Pinions; Spindles; Pivots elastic fitting with a spindle, axis or shaft
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/06—Dials
    • G04B19/18—Graduations on the crystal or glass, on the bezel, or on the rim
    • 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
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B3/00—Normal winding of clockworks by hand or mechanically; Winding up several mainsprings or driving weights simultaneously
    • G04B3/04—Rigidly-mounted keys, knobs or crowns
    • G04B3/041—Construction of crowns for rotating movement; connection with the winding stem; winding stems
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/28—Adjustable guide marks or pointers for indicating determined points of time
    • G04B19/283—Adjustable guide marks or pointers for indicating determined points of time on rotatable rings, i.e. bezel

Definitions

  • the present invention relates to a control system for a rotating member of a timepiece, and more particularly for a flange.
  • the highlights consist of an annular piece disposed at the periphery of a dial, and which partially overlap the edge of the latter. They may be integral or not with a bezel to which is adjusted the ice of the watch. Some highlights are rotatable independently of the bezel, and located completely under the ice.
  • the most common control system is to use a crown provided with a pinion terminal at its end, which meshes with a notch arranged on a lower surface of the flange to drive the latter in rotation.
  • the patent FR1027587 for example describes such a control system by co-operating teeth of the flange and a crown pinion, where the gearing is only possible in a working position pulled from the ring, and a spring-loaded pin acts as an indexing element for the angular positions of the flange.
  • a disadvantage of this type of control system is that it requires a relatively deep toothing to ensure the latching between the toothing of the crown pinion of the crown and the detent of the flange. Therefore, the overall height is quite important and increases the size of the housing for housing such a system ensuring the transmission between the rotation of the crown and that of the flange. Furthermore, the mutual cooperation of the two teeth involved in the gear mechanism makes this transmission system on the one hand quite noisy, and on the other hand relatively inconvenient for fine adjustments. Indeed, the angular indexing of the flange after actuation of the crown is conditioned by the number of teeth of the latter's pinion, the diameter of which is generally much smaller than that of the flange. However, it is difficult to machine a large number of teeth on a small part, and the number of teeth of this part greatly influences the gear ratios, ie the reduction of the angular stroke of the flange relative to to that of the crown.
  • the document CH691 199 discloses, for example, a control ring arranged to actuate, in a predefined axial working position, in rotation a rod provided with a toothless terminal knob cooperating with a peripheral bead of a timer wheel, and consequently all the clockwork during a time setting.
  • An object of the present invention is therefore to provide an alternative solution for a control system, including a flange, and more generally a rotating member for a timepiece, devoid of these known limitations.
  • the subject of the invention is a control system for a rotating member of a timepiece, comprising a control member for actuating said rotating member, and a transmission device between said control member and said rotating member.
  • the control system is characterized in that the transmission device is a hybrid gear device comprising a first member movable about a first axis of rotation provided with a drive roller of elastomeric material, and a second member movable about a second axis of rotation provided with a rolling toothing, the driving roller co-operating with friction with the rolling teeth.
  • the invention also relates to each element of the timepiece control system comprising a part of the transmission device taken separately, namely:
  • a control member of a timepiece characterized in that it comprises a first member movable about a first axis of rotation on which is mounted a drive roller of elastomeric material;
  • a rotating member of a timepiece movable about a second axis of rotation characterized in that it comprises a second movable member having a rolling toothing.
  • a first advantage of the proposed solution is to confer a significant gain in overall height thanks to the flattened profile of the running surface of the driving mobile or the driven mobile of the hybrid gear device described, without however reducing the quality of the transmission. nor its reliability over time.
  • Another advantage of the proposed solution is that it imparts a silent gear mechanism thanks to the drive roller made of elastomeric material, whose flexibility avoids jerkiness and rattling gear noise, unlike mutual cooperation teeth of mobile leading and led a solution known from the prior art.
  • FIG. 1A, 1B and 1C respectively show a top view, in section and in three dimensions of a middle part for housing the rotary flush control system according to a preferred embodiment of the invention
  • FIG. 2A, 2B and 2C respectively show a top view, in section and in three dimensions of a flange rotating according to a preferred embodiment of the invention
  • FIG. 3A, 3B and 3C respectively show a profile view, in section and in three dimensions of a control ring according to a preferred embodiment of the invention
  • FIG. 4 is a sectional view of the rotary flush control system according to a preferred embodiment of the invention, integrated in a wristwatch;
  • FIG. 5 is a detailed view of the running surface used for the flange according to the preferred embodiment of Figures 2A, 2B and 2C.
  • a roller is a piece traditionally formed by a steel roller, and which aims to replace sliding friction with rolling friction (see the illustrated professional dictionary of GA Horlogerie, Berner, p. 518, reference 2221).
  • a drive roller for a part intended to transmit rotational movement by rolling friction with another moving part.
  • FIGS. 1A, 1B and 1C respectively show a top view, in section and in three dimensions, of a caseband intended to receive the control system according to the invention, formed by a ring 1 and a flange 3, illustrated in Figures 2A, B, C and 3A, B, C which follow.
  • the middle part 5 comprises two pairs of horns 53 for attaching a bracelet, as well as a bearing surface 50 forming a bearing surface for the rotating flange 3.
  • first threaded through hole 51 and a second threaded through hole 52 preferably for mounting crown tubes.
  • At each of these threaded holes are arranged respectively a first notch 501 and a second notch 502, visible in Figure 1 A. These notches allow to pass a key for mounting or changing various components of the crown 1 assembled to the middle 5 during an after-sales service, including roller drive 25 on its axis.
  • FIG. 1B shows a sectional view of the middle part 5 along the first cutting axis BB of FIG. 1A, passing through the first threaded through hole 51, on which the thickness of the bearing surface 50 can be seen, while on Figure 1 C one distinguishes the same elements as in Figure 1 A, except the first and second notches 501, 502.
  • FIG. 2A shows a view from above of the flange 3 intended to be mounted on the middle part of FIGS. 1A, 1B, and 1C above, on which is distinguished its upper face, consisting of an oblique display surface 34, here devoid of display elements, but that can be discerned later in Figure 4, and the upper surface 371 of a peripheral flange 37, intended to provide a bearing surface for a ring element disposed to its periphery.
  • FIG. 2B shows the flange 3 along the second cutting axis CC of FIG. 2A, and shows the peripheral flange 37, and the upper surface 371 as well as the lower surface 372 thereof, the oblique display surface.
  • FIG. 2C illustrates the same constituent elements of the flange 3 as FIG. 2A described above, namely the oblique display surface 34, as well as the peripheral flange 37 and its upper surface 371.
  • FIG. 3A illustrates a profile view of a ring 1 according to a preferred embodiment of the invention.
  • a ring 1 is a non-screwed crown having only one axial position relative to the middle part, it will be understood that the hybrid gear system as well as the arrangement of a drive roller 25 on one side.
  • the crown is independent of the crown structure employed, and thus a screw-type crown could quite well be used also without departing from the scope of the invention nor impose structural limitations on the proposed hybrid gear mechanism between the idler wheel. drive 25 and the rolling teeth 32 of the flange 3, or any other movable element to be driven.
  • the ring 1, mobile about a first axis of rotation 10, is conventionally composed of a tube 13, intended to be mounted to the middle part 5 by driving or screwing, above which is arranged a cover 1 1 actuated by the the user of the watch.
  • the drive roller 25 At the proximal end of the ring, on the left of FIGS. 3A, 3B, and 3B, is arranged the drive roller 25, in the form of a first O-ring O-ring or a overmolded seal.
  • the advantage of using an O-Ring type seal is that it can use the drive roller 25 as a wear part, replaceable independently of the rest of the ring 1.
  • the drive roller 25 is made of elastomeric material precisely to increase the frictional forces and improve the quality of the transmission of the bearing, in the manner of a tire of a vehicle on the road surface.
  • a friction ring 14 which is in the form of a second preferred section seal rectangular to maximize the friction surface with each of the pieces.
  • the friction surfaces are then in an annular form in each of the friction planes.
  • O-ring type O-ring or also consist of another molded joint, it would nevertheless require a greater axial compression of the seal to ensure the same friction forces.
  • This friction ring 14 aims to increase the rotation torque of the flange 3 and thus eliminate parasitic and involuntary movements of the flange 3 during handling of the crown 1.
  • the ring 1 is not a screwed crown, such a friction ring 14 is particularly advantageous for a screw-retained crown having a plurality of axial positions, in particular during the transition from a locked or screwed position. "T0" at a position pulled or unscrewed "T1" setting.
  • the advantage of a screwed crown would be to block on demand and by screwing the rotation of the flange 3, to prevent accidental movement.
  • FIG. 3B shows a sectional view along the third cutting axis AA of FIG. 3A, where it can be seen, in addition to the other elements already described in FIG. 3A, a central cylinder 12 tapped to be connected to a rod control, as well as the axial skirt 1 1 1 and the lid 1 12 of the hood 1 1.
  • a third seal 16 also of toric shape, covered by a deckring 15.
  • the third O-ring 16 is moreover maintained axially by means of a spacer 17.
  • the elements of the ring 1 illustrated are similar to those already described with reference to FIG.
  • FIG. 4 shows a sectional view of the detail of the control mechanism according to the preferred embodiment of the invention, in which the flange 3 and the control ring 1, illustrated separately by the preceding FIGS. 2 and 3, are now integrated in the middle part. 5 of a watch.
  • the hybrid gear device of the proposed rotary drive control system relates to the transmission of a rotational movement between a first movable element and a second movable element about their respective axis of rotation by means of a rolling friction gear between the two moving parts, one being equipped at its periphery with a preferably smooth elastomeric material and the other with a harder material, such as for example metal or steel and preferably having a toothing.
  • the gear used in the context of the present invention is thus described as a "hybrid" not only for this first reason of potential mismatch between the two materials responsible for the transmission, but also because it is possible to co-operate with surfaces of different nature, such as a notch, a knurling and or a rough surface with a smooth surface, such as that of the drive roller 25.
  • surfaces of different nature such as a notch, a knurling and or a rough surface with a smooth surface, such as that of the drive roller 25.
  • the cooperation of elements of different nature that is to say, of which the materials and surface profiles are heterogeneous, is unusual for a traditional clockwork gear transmission mechanism where in general the metal teeth of a first mobile are provided to cooperate with another metal toothing of another mobile.
  • no toothing is ever used as a running surface either.
  • the second movable member 31 may be considered as the body flange 3, referenced in Figure 4, while the flange 3 further comprises here a Teflon washer 33 arranged above its peripheral flange 37.
  • This Teflon washer 33 bears on the upper surface 371 thereof, in order to minimize friction with the bezel 6.
  • the first movable element, which is integral in rotation with the drive roller 25, is formed here by the central barrel 2 of the ring 1, also integral in rotation with the cap 1 1 of the ring 1 following the screwing of its threaded upper part. 21 in the threaded blind hole 121 of the central cylinder 12.
  • the driving roller 25 is arranged on a driving element, that is to say the central barrel 2 integral in rotation with the ring 1, while the rolling teeth 32 is arranged on a driven element, that is to say, the 2nd mobile element 31 of the flange 3.
  • a driving element that is to say the central barrel 2 integral in rotation with the ring 1
  • the rolling teeth 32 is arranged on a driven element, that is to say, the 2nd mobile element 31 of the flange 3.
  • a driving roller 25 of elastomeric material is advantageous over the drive member to improve the efficiency of transmission and to reduce production costs, especially when the circumference of the latter, in this case close to that of its lower part 23 - tapped for the possible fixing of a control rod - is significantly lower than the circumference of the driven element, as the flange 3, which saves elastomer material, and also simplifies the machining of the movable member 31 and the central barrel 2.
  • the ratio of the circumferences of the driving element relative to the driven element allows to define a continuous gear ratio, unlike a ratio between numbers of teeth between a mobile leading and a driven mobile, which is a function of discrete values. It dispenses parallel pointed and deep traditional teeth and so suddenly indexing.
  • the proposed solution also provides a very precise positioning of the mutual relative axes of rotation of the parts, also often called "spacing", these positioning sets can be recovered thanks to the plastic properties of the elastomer drive roller 25 which will then be more or less compressed against the rolling surface of the mobile to drive in rotation. The mounting of the control device is thus simplified, which allows additional productivity gains.
  • control ring 1 is a ring having only one axial position vis-a-vis the middle part, which comprises a cover 1 1 projecting out of the caseband 5 and which can be actuated in rotation by the user of the watch.
  • the cover 1 1 is mounted above a tube 13, here provided with a thread 131 for its screw connection to the middle 5 in the first threaded through hole 51 in which is introduced a central cylinder 12 secured to the cover 1 1, and which is provided at its end with a threaded blind hole 121 for assembly to a central barrel 2, for its part having a threaded upper portion 21.
  • the central barrel 2 thus forms a first movable member of the control member that constitutes the ring 1; it is rotatable relative to the tube 13 screwed to the middle part 5 and it is at its proximal end, that is to say the threaded lower part 23 for the possible addition of a control rod - not shown - that is arranged the drive roller 25 of elastomeric material, replacing a pinion terminal as on traditional crowns.
  • the driving roller 25 formed here by a first O-ring which is arranged in a groove delimited by two axial abutments 24, arranged in a plane perpendicular to the first axis of rotation 10 of the crown, which is also that of the central barrel 2 and which can come from material with the central barrel 2 or consist of washers mounted on the latter.
  • a second seal of preferably rectangular or square section, is arranged around the central barrel 2, bearing on a shoulder 22.
  • This second seal constitutes the friction ring 14, already visible in Figures 3A, 3B and 3C previously described, and which is arranged between the central barrel 2 and the tube 13 screwed to the middle part 5 to increase the actuating torque of the ring 1, This is to avoid imposing any parasitic movement on the flange 3.
  • the friction ring 14 is here held axially between the shoulder 22 of the central barrel 2, which can also be formed by a washer, even possibly the other face of the washer. used as axial stop 24 for the drive roller 25, and the lower end 132 of the tube 13 screwed to the middle part 5.
  • this friction ring therefore makes it more difficult to actuate the crown 1 in rotation, and consequently more effectively secures the angular position of the flange 3. According to the preferred embodiment described, it can be seen that this friction ring 14 is interposed between the tube
  • the protruding portion of the ring 1 out of the middle part 5 shows an enlarged view of the detail of the elements illustrated in FIG. 3B, namely a central cylinder 12 threaded connected to the central barrel 2, the axial skirt 1 1 1 and the lid 1 12 of the hood, as well as the sealing elements of the crown head vis-à-vis the interior of the middle part, that is to say a third O-ring 16, covered by a deckring 15, and maintained by Moreover, these elements have no influence on the hybrid gear mechanism proposed in the context of the present invention, and in particular on the arrangement of the drive roller. 25.
  • the driving roller 25 made of elastomeric material cooperates with a rolling toothing 32 arranged on the lower face of a flange body 3, which constitutes a preferred embodiment of a rotating member. in the context of the invention.
  • the flange 3 is composed of a second movable element 31, that is to say the body of the flange on which is arranged the rolling toothing 32, partially covering the edge of the dial 4, and which provided with a peripheral rim 37 ring on which is mounted a Teflon washer 33 to minimize friction with the bezel 6, which is also covered with the glass 7 and mounted notch on the middle part 5.
  • a seal formed by a fourth O-ring is arranged between the bezel 6 and the middle part 5, and similarly, a fifth O-ring 81 is interposed between the bottom 8 and the middle part 5.
  • the rolling toothing 32 extends essentially in a parallel gear plane. at the first axis of rotation 10 of the ring 1, that is to say perpendicular to the second axis of rotation 30 of the flange 3. Consequently, the hybrid gear mechanism acts as a return without requiring the use of inclined teeth to gain space in height.
  • a hybrid gear device comprising an inclined bearing toothing 32, in particular 45 degrees relative to the axis of rotation of the driven or driven mobile, to effect a 90 degree return, or arrange a rolling toothing 32 extending not in a plane but in a cylindrical portion at the periphery of a mobile cooperating with a mobile rotating along a parallel axis, to ensure the transmission in rotation a second mobile rotating along a parallel axis of rotation.
  • FIG. 5 shows the detail of a rolling toothing 32 according to a preferred embodiment, where it is arranged on the lower face of the second mobile 31 of the flange and extends along an annular surface situated in a perpendicular plane the second axis of rotation 30, that is to say the gear plane 35, referenced in Figure 3B.
  • the rolling toothing 32 is formed here of a flat toothing 36, whose tooth profile is greater than 90 degrees, and preferably between 100 and 130 degrees, here 120 degrees in Figure 5.
  • Such a profile would not be suitable for a mutual gearing of teeth on adjacent mobiles because of the risk of slippage, but is perfectly suitable here to limit the size and ensure the transmission of the rotational rotation of the drive roller 25 of elastomeric material, slightly compressed in the hollow of this flat toothing 36.
  • a knurling could be used, formed for example by oblique striations extending in a single direction or two symmetrically opposite directions, the difference with the flat toothing corresponding to a depth less significant imprints formed on the rolling teeth 32, thus allowing a slight gain in additional height. It is also possible to replace the flat toothing 36 or the knurling by a surface flat very rough to allow the transmission of the bearing in risk of sliding; however, such an alternative would present the risk of rapidly using the drive roller 25 tearing elastomeric material because of the very abrasive nature that would be required to ensure the quality of the transmission, and thus frequently require replacement.
  • the depth of the teeth or fingerprints will preferably not exceed a quarter of a millimeter (that is to say 0.25 mm), and according to the mode preferred embodiment described, this depth is preferably between 0.05 and 0.20mm, in order to gain the maximum possible height compared to a conventional gear mechanism.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Gear Transmission (AREA)
  • Gears, Cams (AREA)
  • Transmission Devices (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

The invention relates to a control system for a rotating member of a timepiece, including a control member for actuating said rotating member, and a transmission device between said control member and said rotating member. The control system is characterised in that the gear device is a hybrid gear device including a first element which can move about a first axis of rotation (10) and is provided with a drive roller (25) made of an elastomer material, and a second element (31) which can move about a second axis of rotation (30) and is provided with a toothed gearing (32). The drive roller (25) engages with the toothed gearing (32) by means of friction.

Description

SYSTE M E D E COM MAN D E PO U R P I EC E D ' HO RLOG E R I E  HOUSING SYSTEMS H O W H O R K E R E G E
La présente invention concerne un système de commande pour un organe tournant d'une pièce d'horlogerie, et plus particulièrement pour un réhaut. The present invention relates to a control system for a rotating member of a timepiece, and more particularly for a flange.
Dans le domaine de l'horlogerie, on connaît depuis longtemps les réhauts, qui consistent en une pièce annulaire disposée en périphérie d'un cadran, et qui recouvrent partiellement le bord de ce dernier. Ils peuvent être solidaires ou non d'une lunette à laquelle est ajustée la glace de la montre. Certains réhauts sont mobiles en rotation indépendamment de la lunette, et situés intégralement sous la glace. Pour commander de tels réhauts tournants, le système de commande le plus usuel consiste à utiliser une couronne pourvue d'un pignon terminal à son extrémité, qui engrène avec un crantage agencé sur une surface inférieure du réhaut pour entraîner ce dernier en rotation. Le brevet FR1027587 décrit par exemple un tel système de commande par coopération de dentures du réhaut et d'un pignon de couronne, où l'engrenage n'est possible que dans une position de travail tirée de la couronne, et un pointeau monté sur ressort agit comme élément d'indexation pour les positions angulaires du réhaut.  In the field of watchmaking, it has long been known for the highlights, which consist of an annular piece disposed at the periphery of a dial, and which partially overlap the edge of the latter. They may be integral or not with a bezel to which is adjusted the ice of the watch. Some highlights are rotatable independently of the bezel, and located completely under the ice. To control such rotary flanges, the most common control system is to use a crown provided with a pinion terminal at its end, which meshes with a notch arranged on a lower surface of the flange to drive the latter in rotation. The patent FR1027587 for example describes such a control system by co-operating teeth of the flange and a crown pinion, where the gearing is only possible in a working position pulled from the ring, and a spring-loaded pin acts as an indexing element for the angular positions of the flange.
Un inconvénient de ce type de système de commande est qu'il requiert une denture relativement profonde pour assurer l'encliquetage entre la denture du pignon terminal de la couronne et le crantage du réhaut. Par conséquent, l'encombrement en hauteur est assez important et augmente la taille du boîtier permettant de loger un tel système assurant la transmission entre la rotation de la couronne et celle du réhaut. Par ailleurs, la coopération mutuelle des deux dentures impliquées dans le mécanisme d'engrenage rend ce système de transmission d'une part assez bruyant, et d'autre part relativement malcommode pour des réglage fins. En effet, la l'indexation angulaire du réhaut suite à l'actionnement de la couronne est conditionnée par le nombre de dents du pignon terminal de cette dernière, dont le diamètre est en général nettement inférieur à celui du réhaut. Or il est difficile d'usiner un grand nombre de dents sur une pièce de petite taille, et le nombre de dents de cette pièce influence considérablement les rapports d'engrenage, c'est à dire la démultiplication de la course angulaire du réhaut par rapport à celle de la couronne. A disadvantage of this type of control system is that it requires a relatively deep toothing to ensure the latching between the toothing of the crown pinion of the crown and the detent of the flange. Therefore, the overall height is quite important and increases the size of the housing for housing such a system ensuring the transmission between the rotation of the crown and that of the flange. Furthermore, the mutual cooperation of the two teeth involved in the gear mechanism makes this transmission system on the one hand quite noisy, and on the other hand relatively inconvenient for fine adjustments. Indeed, the angular indexing of the flange after actuation of the crown is conditioned by the number of teeth of the latter's pinion, the diameter of which is generally much smaller than that of the flange. However, it is difficult to machine a large number of teeth on a small part, and the number of teeth of this part greatly influences the gear ratios, ie the reduction of the angular stroke of the flange relative to to that of the crown.
Pour l'engrenage d'autres type de pièces d'horlogerie, notamment à bas coûts, on connaît par ailleurs des mécanismes d'entraînement par friction. Le document CH691 199 divulgue par exemple une couronne de commande agencée pour actionner, dans une position de travail axiale prédéfinie, en rotation une tige pourvue d'un pommeau terminal dépourvu de dents coopérant par friction avec un bourrelet périphérique d'une roue de minuterie, et par suite tout le rouage de minuterie lors d'une remise à l'heure.  For the gearing of other types of timepieces, particularly at low costs, friction drive mechanisms are also known. The document CH691 199 discloses, for example, a control ring arranged to actuate, in a predefined axial working position, in rotation a rod provided with a toothless terminal knob cooperating with a peripheral bead of a timer wheel, and consequently all the clockwork during a time setting.
L'inconvénient de ce type d'engrenage est qu'il présente toutefois un degré de fiabilité moindre, et un moins bon rendement de transmission en rotation, notamment sur la durée en raison de l'abrasion progressive des surfaces de contact des pièces d'engrenage. Cette détérioration des surfaces résulte en une diminution de l'intensité des forces de friction et provoque, à terme, de forts glissements mutuels plutôt qu'une transmission de roulement entre les pièces d'engrenage.  The disadvantage of this type of gear is that it however has a lower degree of reliability, and a lower rotational transmission efficiency, especially over time due to the progressive abrasion of the contact surfaces of the parts of the machine. gear. This deterioration of the surfaces results in a decrease in the intensity of the frictional forces and causes, in the long term, strong mutual slips rather than a rolling transmission between the gear parts.
Un but de la présente invention est par conséquent de proposer une solution alternative pour un système de commande, notamment d'un réhaut, et plus généralement d'un organe tournant pour pièce d'horlogerie, dépourvue de ces limitations connues.  An object of the present invention is therefore to provide an alternative solution for a control system, including a flange, and more generally a rotating member for a timepiece, devoid of these known limitations.
A cet effet, l'invention a pour objet un système de commande pour organe tournant d'une pièce d'horlogerie, comprenant un organe de commande pour actionner ledit organe tournant, et un dispositif de transmission entre ledit organe de commande et ledit organe tournant. Le système de commande est caractérisé en ce que le dispositif de transmission est un dispositif d'engrenage hybride comprenant un premier élément mobile autour d'un premier axe de rotation pourvu d'un galet d'entraînement en matériau élastomère, et un deuxième élément mobile autour d'un deuxième axe de rotation pourvu d'une denture de roulement, le galet d'entraînement coopérant par friction avec la denture de roulement. For this purpose, the subject of the invention is a control system for a rotating member of a timepiece, comprising a control member for actuating said rotating member, and a transmission device between said control member and said rotating member. . The control system is characterized in that the transmission device is a hybrid gear device comprising a first member movable about a first axis of rotation provided with a drive roller of elastomeric material, and a second member movable about a second axis of rotation provided with a rolling toothing, the driving roller co-operating with friction with the rolling teeth.
L'invention concerne également chaque élément du système de commande pour pièce d'horlogerie composant une partie du dispositif de transmission pris séparément, à savoir :  The invention also relates to each element of the timepiece control system comprising a part of the transmission device taken separately, namely:
- un organe de commande d'une pièce d'horlogerie, caractérisé en ce qu'il comprend un premier élément mobile autour d'un premier axe de rotation sur lequel est monté un galet d'entraînement en matériau élastomère; et - A control member of a timepiece, characterized in that it comprises a first member movable about a first axis of rotation on which is mounted a drive roller of elastomeric material; and
- un organe tournant d'une pièce d'horlogerie mobile autour d'un deuxième axe de rotation, caractérisé en ce qu'il comprend un deuxième élément mobile présentant une denture de roulement.  - A rotating member of a timepiece movable about a second axis of rotation, characterized in that it comprises a second movable member having a rolling toothing.
Un premier avantage de la solution proposée est de conférer un gain significatif d'encombrement en hauteur grâce au profil aplati de la surface de roulement du mobile menant ou du mobile mené du dispositif d'engrenage hybride décrit, sans toutefois diminuer la qualité de la transmission ni sa fiabilité sur la durée. A first advantage of the proposed solution is to confer a significant gain in overall height thanks to the flattened profile of the running surface of the driving mobile or the driven mobile of the hybrid gear device described, without however reducing the quality of the transmission. nor its reliability over time.
Un autre avantage de la solution proposée est qu'elle confère un caractère silencieux mécanisme d'engrenage grâce au galet d'entraînement en matériau élastomère, dont la souplesse évite tout à-coups et bruit de cliquetis d'engrenage, contrairement à la coopération mutuelle de dentures des mobiles menant et mené d'une solution connue de l'art antérieur.  Another advantage of the proposed solution is that it imparts a silent gear mechanism thanks to the drive roller made of elastomeric material, whose flexibility avoids jerkiness and rattling gear noise, unlike mutual cooperation teeth of mobile leading and led a solution known from the prior art.
Encore un autre avantage de la solution proposée est qu'elle permet une réduction des coûts grâce à l'économie à la fois de l'usinage complexe d'une denture d'un mobile de petit diamètre, comme typiquement un pignon d'entraînement, et gain de matière grâce à l'aplanissement des crans d'entraînement, typiquement sur un mobile mené de plus gros diamètre. Encore un autre avantage de la solution proposée est qu'elle facilite le positionnement mutuel de l'organe de commande et de l'organe tournant, notamment dans un boîtier, car les propriétés élastiques du galet d'entraînement en matériau élastomère permettent de récupérer des jeux de positionnement pour les axes respectifs des éléments mobiles menants et menés impliqués dans le dispositif d'engrenage proposé. Yet another advantage of the proposed solution is that it allows a reduction in costs by saving both the complex machining of a toothing of a small-diameter mobile, such as typically a drive gear, and material gain through the flattening of the drive notches, typically on a ledger of larger diameter. Yet another advantage of the proposed solution is that it facilitates the mutual positioning of the control member and the rotating member, in particular in a housing, because the elastic properties of the drive roller of elastomeric material make it possible to recover positioning sets for the respective axes of the leading and driven moving elements involved in the proposed gear device.
D'autres caractéristiques et avantages de la présente invention apparaîtront dans la description suivante d'un mode de réalisation préféré concernant un réhaut entraîné par une couronne de commande, présenté à titre d'exemple non limitatif en référence aux dessins annexés, dans lesquels:  Other features and advantages of the present invention will appear in the following description of a preferred embodiment concerning a flange driven by a control ring, presented by way of non-limiting example with reference to the accompanying drawings, in which:
- les figure 1 A, 1 B et 1 C montrent respectivement une vue de dessus, en coupe et en trois dimensions d'une carrure destinée à loger le système de commande pour réhaut tournant selon un mode de réalisation préférentiel de l'invention;  - Figures 1A, 1B and 1C respectively show a top view, in section and in three dimensions of a middle part for housing the rotary flush control system according to a preferred embodiment of the invention;
- les figures 2A, 2B et 2C montrent respectivement une vue de dessus, en coupe et en trois dimensions d'un réhaut tournant selon un mode de réalisation préférentiel de l'invention; - Figures 2A, 2B and 2C respectively show a top view, in section and in three dimensions of a flange rotating according to a preferred embodiment of the invention;
- les figure 3A, 3B et 3C montrent respectivement une vue de profil, en coupe et en trois dimensions d'une couronne de commande selon un mode de réalisation préférentiel de l'invention; - Figures 3A, 3B and 3C respectively show a profile view, in section and in three dimensions of a control ring according to a preferred embodiment of the invention;
- la figure 4 est une vue en coupe du système de commande pour réhaut tournant selon un mode de réalisation préférentiel de l'invention, intégré dans une montre bracelet;  - Figure 4 is a sectional view of the rotary flush control system according to a preferred embodiment of the invention, integrated in a wristwatch;
- la figure 5 est une vue de détail de la surface de roulement utilisée pour le réhaut selon le mode de réalisation préférentiel des figures 2A,2B et 2C.  - Figure 5 is a detailed view of the running surface used for the flange according to the preferred embodiment of Figures 2A, 2B and 2C.
Sur le mode de réalisation préférentiel illustré par l'ensemble des figures qui suivent, on décrit un réhaut utilisé comme organe tournant ainsi qu'une couronne utilisée comme organe de commande. L'homme du métier comprendra toutefois que l'invention s'applique à d'autre types d'organes tournants qui ne constituent pas nécessairement des éléments d'affichage, mais peuvent consister en des éléments de transmission ou de renvoi d'un rouage horloger. Par ailleurs, l'invention concerne également des organes de commande qui ne consistent pas nécessairement en une couronne. Ainsi à titre d'exemple d'un mode de réalisation alternatif non illustré on pourrait ainsi envisager, en remplacement de la couronne comme organe de commande, d'employer un poussoir agissant sur la denture d'un mobile par l'intermédiaire d'un tige de commande, et disposer le galet d'entraînement sur un mobile coaxial et solidaire en rotation du mobile denté entraîné par la tige. Ce mode de réalisation présente toutefois l'inconvénient de ne pas pouvoir effectuer la commande en rotation indifféremment dans les deux sens. In the preferred embodiment illustrated by all of the following figures, there is described a flange used as a rotating member and a ring used as a control member. The skilled person However, it will be understood that the invention applies to other types of rotating members which do not necessarily constitute display elements, but may consist of transmission or return elements of a clockwork train. Moreover, the invention also relates to control members which do not necessarily consist of a crown. Thus, by way of example of an alternative embodiment not illustrated, it could thus be envisaged, replacing the crown as a control member, to use a pusher acting on the toothing of a mobile via a control rod, and arrange the drive roller on a mobile coaxial and rotationally fixed to the toothed mobile driven by the rod. This embodiment, however, has the disadvantage of not being able to perform the control in rotation indifferently in both directions.
Selon le vocabulaire horloger usuel, un galet est une pièce formée traditionnellement par un rouleau en acier, et qui vise à remplacer le frottement de glissement par un frottement de roulement (voir le dictionnaire professionnel illustré de l'horlogerie de G-A. Berner, p.518, référence 2221 ). On se référera donc, dans le cadre de la présente demande, par extension à un galet d'entraînement pour une pièce ayant pour vocation de transmettre un mouvement de rotation par frottement de roulement avec une autre pièce mobile.  According to the usual watchmaking vocabulary, a roller is a piece traditionally formed by a steel roller, and which aims to replace sliding friction with rolling friction (see the illustrated professional dictionary of GA Horlogerie, Berner, p. 518, reference 2221). Thus, in the context of the present application, reference will be made, by extension, to a drive roller for a part intended to transmit rotational movement by rolling friction with another moving part.
Les figures 1 A, 1 B et 1 C montrent respectivement une vue de dessus, en coupe et en trois dimensions d'une carrure 5 destinée à recevoir le système de commande selon l'invention, formé par une couronne 1 et un réhaut 3, illustrés sur les figures 2A,B,C et 3A,B,C qui suivent. La carrure 5 comprend deux paires de cornes 53 d'attache pour bracelet, ainsi qu'une portée 50 formant une surface d'appui pour le réhaut 3 tournant. Dans la carrure sont percés un premier trou traversant taraudé 51 ainsi qu'un deuxième trou traversant taraudé 52, de préférence pour le montage de tubes de couronne. Au niveau de chacun de ces trous taraudés sont disposées respectivement une première échancrure 501 et une deuxième échancrure 502, visibles sur la figure 1 A. Ces échancrures permettent de passer une clef pour le montage ou le changement de divers éléments constitutifs de la couronne 1 assemblée à la carrure 5 lors d'un service après-vente, et notamment galet d'entraînement 25 sur son axe. FIGS. 1A, 1B and 1C respectively show a top view, in section and in three dimensions, of a caseband intended to receive the control system according to the invention, formed by a ring 1 and a flange 3, illustrated in Figures 2A, B, C and 3A, B, C which follow. The middle part 5 comprises two pairs of horns 53 for attaching a bracelet, as well as a bearing surface 50 forming a bearing surface for the rotating flange 3. In the middle are drilled first threaded through hole 51 and a second threaded through hole 52, preferably for mounting crown tubes. At each of these threaded holes are arranged respectively a first notch 501 and a second notch 502, visible in Figure 1 A. These notches allow to pass a key for mounting or changing various components of the crown 1 assembled to the middle 5 during an after-sales service, including roller drive 25 on its axis.
La figure 1 B montre une vue en coupe de la carrure 5 selon le premier axe de coupe B-B de la figure 1 A, traversant le premier trou traversant taraudé 51 , sur laquelle on peut voir l'épaisseur de la portée 50, tandis que sur la figure 1 C on distingue les mêmes éléments que sur la figure 1 A, hormis les première et deuxième échancrures 501 ,502.  FIG. 1B shows a sectional view of the middle part 5 along the first cutting axis BB of FIG. 1A, passing through the first threaded through hole 51, on which the thickness of the bearing surface 50 can be seen, while on Figure 1 C one distinguishes the same elements as in Figure 1 A, except the first and second notches 501, 502.
La figure 2A montre une vue de dessus du réhaut 3 destiné à être monté sur la carrure 5 des figures 1 A, 1 B, et 1 C précédentes, sur lequel on distingue sa face supérieure, consistant en une surface oblique d'affichage 34, ici dépourvue d'éléments d'affichage, mais que l'on peut discerner plus loin sur la figure 4, ainsi que la surface supérieure 371 d'un rebord périphérique 37, destinée à fournir une surface d'appui pour un élément annulaire disposé à sa périphérie. La figure 2B montre le réhaut 3 selon le deuxième axe de coupe C-C de la figure 2A, et met en évidence le rebord périphérique 37, et la surface supérieure 371 ainsi que la surface inférieure 372 de celui-ci, la surface oblique d'affichage 34, mais surtout la denture de roulement 32 qui coopère avec le galet d'entraînement 25, visible sur les figures 3A, 3B et 3C suivantes de la couronne. Cette denture de roulement 32, visant à transmettre le mouvement de rotation de la couronne 1 lorsque cette dernière est actionnée par l'utilisateur de la montre, s'étend le long d'une face inférieure de forme annulaire du réhaut 3, et on peut constater que cette denture de roulement 32 se situe dans un plan d'engrenage 35 perpendiculaire au deuxième axe de rotation 30 du réhaut 3. Cette denture de roulement 32 est formée de préférence par une denture plate, comme illustrée plus loin sur la figure 5, mais on pourrait envisager d'employer, à titre d'alternative, un autre type de surface de roulement comme un moletage voire même une matériau présentant une rugosité suffisante pour garantir la transmission du roulement du galet d'entraînement 25 en évitant tout glissement. La figure 2C illustre les mêmes éléments constitutifs du réhaut 3 que la figure 2A décrite précédemment, à savoir la surface oblique d'affichage 34, ainsi que le rebord périphérique 37 et sa surface supérieure 371 . FIG. 2A shows a view from above of the flange 3 intended to be mounted on the middle part of FIGS. 1A, 1B, and 1C above, on which is distinguished its upper face, consisting of an oblique display surface 34, here devoid of display elements, but that can be discerned later in Figure 4, and the upper surface 371 of a peripheral flange 37, intended to provide a bearing surface for a ring element disposed to its periphery. FIG. 2B shows the flange 3 along the second cutting axis CC of FIG. 2A, and shows the peripheral flange 37, and the upper surface 371 as well as the lower surface 372 thereof, the oblique display surface. 34, but especially the rolling teeth 32 which cooperates with the drive roller 25, visible in Figures 3A, 3B and 3C of the crown. This rolling toothing 32, intended to transmit the rotational movement of the crown 1 when the latter is actuated by the user of the watch, extends along an annular bottom face of the flange 3, and it is possible to note that this rolling toothing 32 is located in a gear plane 35 perpendicular to the second axis of rotation 30 of the flange 3. This rolling toothing 32 is preferably formed by a flat toothing, as illustrated further in FIG. 5, but one could consider using, as an alternative, another type of tread surface such as a knurling or even a material having a sufficient roughness to ensure the transmission of the rolling of the roller drive 25 avoiding slipping. FIG. 2C illustrates the same constituent elements of the flange 3 as FIG. 2A described above, namely the oblique display surface 34, as well as the peripheral flange 37 and its upper surface 371.
La figure 3A illustre une vue de profil d'une couronne 1 selon un mode de réalisation préférentiel de l'invention. Bien qu'il s'agisse d'une couronne non vissée ne présentant qu'une seule position axiale par rapport à la carrure, on comprendra que le système d'engrenage hybride ainsi que la disposition d'un galet d'entraînement 25 sur une couronne est indépendant de la structure de couronne employée, et qu'ainsi une couronne du type vissée pourrait tout à fait être employée également sans sortir du cadre de l'invention ni imposer de limites structurelles au mécanisme d'engrenage hybride proposé entre le galet d'entraînement 25 et la denture de roulement 32 du réhaut 3, ou tout autre élément mobile à entraîner.  FIG. 3A illustrates a profile view of a ring 1 according to a preferred embodiment of the invention. Although it is a non-screwed crown having only one axial position relative to the middle part, it will be understood that the hybrid gear system as well as the arrangement of a drive roller 25 on one side. The crown is independent of the crown structure employed, and thus a screw-type crown could quite well be used also without departing from the scope of the invention nor impose structural limitations on the proposed hybrid gear mechanism between the idler wheel. drive 25 and the rolling teeth 32 of the flange 3, or any other movable element to be driven.
La couronne 1 , mobile autour d'un premier axe de rotation 10, est composée classiquement d'un tube 13, destiné à être monté à la carrure 5 par chassage ou vissage, au-dessus duquel est agencé un capot 1 1 actionnable par l'utilisateur de la montre. Au niveau de l'extrémité proximale de la couronne, sur la gauche des figures 3A, 3B, et 3B, est agencé le galet d'entraînement 25, sous la forme d'un premier joint torique du type O-ring ou d'un joint surmoulé. L'avantage d'utiliser un joint de type O-Ring est de pouvoir utiliser le galet d'entraînement 25 comme pièce d'usure, remplaçable indépendamment du reste de la couronne 1 . Le galet d'entraînement 25 est réalisé en matériau élastomère précisément pour augmenter les forces de frottement et améliorer la qualité de la transmission du roulement, à la manière d'un pneu d'un véhicule sur le revêtement d'une route. Entre l'organe de transmission, solidaire en rotation de la couronne 1 sur laquelle est agencé le galet d'entraînement 25, et le tube 13, est agencé de préférence une bague de friction 14, qui se présente sous la forme d'un deuxième joint de section de préférence rectangulaire afin de maximiser la surface de frottement avec chacune des pièces. Les surfaces de friction se présentent alors sous une forme annulaire dans chacun des plans de friction. On pourrait toutefois également envisager un joint de forme torique de type O-ring ou également consister en un autre joint surmoulé, ce nécessiterait néanmoins une compression axiale plus importante du joint pour garantir les mêmes forces de frottement. Cette bague de friction 14, vise à augmenter le couple de mise en rotation du réhaut 3 et éliminer ainsi les mouvements parasites et involontaires du réhaut 3 lors des manipulations de la couronne 1 . Bien que selon le mode de réalisation préférentiel illustré, la couronne 1 ne soit pas une couronne vissée, une telle bague de friction 14 est particulièrement avantageuse pour une couronne vissée ayant plusieurs position axiales, notamment lors de la transition d'une position verrouillée ou vissée « T0 » à une position tirée ou dévissée « T1 » de réglage. En effet, dans le cadre d'une montre de plongée par exemple, l'avantage d'une couronne vissée consisterait à bloquer à la demande et par vissage la rotation du réhaut 3, afin d'en éviter tout déplacement accidentel. Ceci s'avère indispensable pour des raisons de sécurité, car des indications temporelles critiques pour une plongée, comme par exemple un temps restant avant d'effectuer un palier de décompression, ne doivent en aucun cas pouvoir être modifiés. Parallèlement au verrouillage par vissage, la bague de friction 14 demeure dans ce cas indispensable pour empêcher toute rotation accidentelle du réhaut 3 précisément lors des opérations de dévissage, et surtout de revissage de la couronne 1 . The ring 1, mobile about a first axis of rotation 10, is conventionally composed of a tube 13, intended to be mounted to the middle part 5 by driving or screwing, above which is arranged a cover 1 1 actuated by the the user of the watch. At the proximal end of the ring, on the left of FIGS. 3A, 3B, and 3B, is arranged the drive roller 25, in the form of a first O-ring O-ring or a overmolded seal. The advantage of using an O-Ring type seal is that it can use the drive roller 25 as a wear part, replaceable independently of the rest of the ring 1. The drive roller 25 is made of elastomeric material precisely to increase the frictional forces and improve the quality of the transmission of the bearing, in the manner of a tire of a vehicle on the road surface. Between the transmission member, integral in rotation with the ring gear 1 on which the drive roller 25 is arranged, and the tube 13, is preferably arranged a friction ring 14, which is in the form of a second preferred section seal rectangular to maximize the friction surface with each of the pieces. The friction surfaces are then in an annular form in each of the friction planes. However, one could also consider O-ring type O-ring or also consist of another molded joint, it would nevertheless require a greater axial compression of the seal to ensure the same friction forces. This friction ring 14, aims to increase the rotation torque of the flange 3 and thus eliminate parasitic and involuntary movements of the flange 3 during handling of the crown 1. Although according to the preferred embodiment illustrated, the ring 1 is not a screwed crown, such a friction ring 14 is particularly advantageous for a screw-retained crown having a plurality of axial positions, in particular during the transition from a locked or screwed position. "T0" at a position pulled or unscrewed "T1" setting. Indeed, in the context of a diving watch for example, the advantage of a screwed crown would be to block on demand and by screwing the rotation of the flange 3, to prevent accidental movement. This is essential for safety reasons, because critical time indications for a dive, such as a time remaining before performing a decompression stop, must in no way be modified. Parallel to the locking by screwing, the friction ring 14 remains in this case essential to prevent accidental rotation of the flange 3 precisely during unscrewing operations, and especially screwing the crown 1.
La figure 3B montre une vue en coupe selon le troisième axe de coupe A-A de la figure 3A, ou l'on peut voir, en plus des autres éléments déjà décrits sur la figure 3A, un cylindre central 12 taraudé pour être relié à une tige de commande, ainsi que la jupe axiale 1 1 1 et le couvercle 1 12 du capot 1 1 . On peut également distinguer par ailleurs les éléments d'étanchéité de la tête de couronne vis-à-vis de l'intérieur de la carrure, c'est-à-dire un troisième joint 16, également de forme torique, recouvert par un deckring 15. Le troisième joint torique 16 est par ailleurs maintenu axialement à l'aide d'une entretoise 17. Sur la figure 3C, les éléments de la couronne 1 illustrés sont similaires à ceux déjà décrits au vu de la figure 3A, c'est-à-dire le galet d'entraînement 25, la bague de friction 14 et le tube 13; néanmoins, on peut distinguer un logo « H » sur la face externe 1 13 du capot 1 1 , et mieux visualiser le moletage sur le pourtour de la jupe axiale 1 1 1 du capot 1 1 , prévu pour faciliter la préhension et la manipulation de la couronne par l'utilisateur. FIG. 3B shows a sectional view along the third cutting axis AA of FIG. 3A, where it can be seen, in addition to the other elements already described in FIG. 3A, a central cylinder 12 tapped to be connected to a rod control, as well as the axial skirt 1 1 1 and the lid 1 12 of the hood 1 1. We can also distinguish the sealing elements of the crown head vis-à-vis the inside of the middle part, that is to say a third seal 16, also of toric shape, covered by a deckring 15. The third O-ring 16 is moreover maintained axially by means of a spacer 17. In FIG. 3C, the elements of the ring 1 illustrated are similar to those already described with reference to FIG. 3A, that is to say the driving roller 25, the friction ring 14 and the tube 13; nevertheless, it is possible to distinguish an "H" logo on the external face 1 13 of the cover 1 1, and to better visualize the knurling around the periphery of the axial skirt 1 1 1 of the cover 1 1, designed to facilitate the gripping and handling of the crown by the user.
La figure 4 montre une vue en coupe du détail du mécanisme de commande selon le mode de réalisation préférentiel de l'invention, où le réhaut 3 et la couronne de commande 1 illustrées séparément par les figures 2 et 3 précédentes sont désormais intégrés dans la carrure 5 d'une montre. FIG. 4 shows a sectional view of the detail of the control mechanism according to the preferred embodiment of the invention, in which the flange 3 and the control ring 1, illustrated separately by the preceding FIGS. 2 and 3, are now integrated in the middle part. 5 of a watch.
Selon l'invention, le dispositif d'engrenage hybride du système de commande pour organe tournant proposé concerne la transmission d'un mouvement de rotation entre un premier élément mobile et un deuxième élément mobile autour de leur axe de rotation respectif à l'aide d'un engrenage par frottement de roulement entre les deux pièces mobiles, l'une étant équipée sur son pourtour d'un matériau élastomère de préférence lisse et l'autre d'un matériau plus dur, comme par exemple du métal ou de l'acier, et présentant de préférence une denture. L'engrenage utilisé dans le cadre de la présente invention est ainsi qualifié d' « hybride » non seulement pour cette première raison d'inadéquation potentielle entre les deux matériaux responsables de la transmission, mais également parce qu'il est possible de faire coopérer des surfaces de nature différente, tel qu'un crantage, un moletage et ou encore une surface rugueuse avec une surface lisse, comme celle du galet d'entraînement 25. La coopération d'éléments de nature différente, c'est-à-dire dont les matériaux et les profils de surface sont hétérogènes, est inhabituelle pour un mécanisme de transmission par engrenage traditionnel horloger où en général la denture en métal d'un premier mobile sont prévues pour coopérer avec une autre denture en métal d'un autre mobile. Alternativement, dans le cadre d'engrenage par friction, aucune denture n'est jamais employée non plus comme surface de roulement. According to the invention, the hybrid gear device of the proposed rotary drive control system relates to the transmission of a rotational movement between a first movable element and a second movable element about their respective axis of rotation by means of a rolling friction gear between the two moving parts, one being equipped at its periphery with a preferably smooth elastomeric material and the other with a harder material, such as for example metal or steel and preferably having a toothing. The gear used in the context of the present invention is thus described as a "hybrid" not only for this first reason of potential mismatch between the two materials responsible for the transmission, but also because it is possible to co-operate with surfaces of different nature, such as a notch, a knurling and or a rough surface with a smooth surface, such as that of the drive roller 25. The cooperation of elements of different nature, that is to say, of which the materials and surface profiles are heterogeneous, is unusual for a traditional clockwork gear transmission mechanism where in general the metal teeth of a first mobile are provided to cooperate with another metal toothing of another mobile. Alternatively, in the frame friction gear, no toothing is ever used as a running surface either.
Selon le mode de réalisation préférentiel décrit où l'organe tournant est un réhaut 3 et l'organe de commande est une couronne 1 , le deuxième élément mobile 31 peut être considéré comme le corps du réhaut 3, référencé sur la figure 4, alors que le réhaut 3 comprend ici par ailleurs une rondelle en téflon 33 agencée au-dessus de son rebord périphérique 37. Cette rondelle en téflon 33 vient en appui sur la surface supérieure 371 de celui-ci, afin de minimiser les frottements avec la lunette 6. Le premier élément mobile, qui est solidaire en rotation du galet d'entraînement 25, est formé ici par le canon central 2 de la couronne 1 , solidaire également en rotation du capot 1 1 de la couronne 1 suite au vissage de sa partie supérieure filetée 21 dans le trou borgne taraudé 121 du cylindre central 12.  According to the preferred embodiment described where the rotating member is a flange 3 and the control member is a ring 1, the second movable member 31 may be considered as the body flange 3, referenced in Figure 4, while the flange 3 further comprises here a Teflon washer 33 arranged above its peripheral flange 37. This Teflon washer 33 bears on the upper surface 371 thereof, in order to minimize friction with the bezel 6. The first movable element, which is integral in rotation with the drive roller 25, is formed here by the central barrel 2 of the ring 1, also integral in rotation with the cap 1 1 of the ring 1 following the screwing of its threaded upper part. 21 in the threaded blind hole 121 of the central cylinder 12.
Selon le mode de réalisation préférentiel décrit, on pourra noter que le galet d'entraînement 25 est agencé sur un élément menant, c'est-à-dire le canon central 2 solidaire en rotation de la couronne 1 , tandis que la denture de roulement 32 est agencée sur un élément mené, c'est-à-dire le 2e élément mobile 31 du réhaut 3. Un tel agencement du galet d'entraînement 25 en matériau élastomère est avantageux sur l'élément menant pour améliorer l'efficacité de la transmission ainsi que de diminuer les coûts de production, notamment lorsque la circonférence de celui-ci, en l'occurrence voisine de celle de sa partie inférieure 23 - taraudée pour la fixation éventuelle d'une tige de commande - est nettement inférieure à la circonférence de l'élément mené, comme le réhaut 3, ce qui permet d'économiser de la matière élastomère, et simplifie par ailleurs l'usinage de l'élément mobile 31 ainsi que du canon central 2. Par ailleurs, alors que l'engrenage s'effectue par frottement de roulement mutuel, on pourra remarquer que le rapport des circonférences de l'élément menant par rapport à l'élément mené permet de définir un rapport d'engrenage continu, contrairement à un ratio entre des nombres de dents entre un mobile menant et un mobile mené, qui est fonction de valeurs discrètes. On se dispense parallèlement de denture pointues et profondes traditionnelles et ainsi de tout à-coup d'indexation. Par ailleurs, la solution proposée dispense également d'un positionnement très précis des axes de rotation relatifs mutuel des pièces, aussi souvent appelé « entraxe », ces jeux de positionnement pouvant être récupérés grâce aux propriétés plastiques du galet d'entraînement 25 en élastomère qui sera alors plus ou moins comprimé contre la surface de roulement du mobile à entraîner en rotation. Le montage du dispositif de commande en est ainsi simplifié, ce qui permet des gains de productivité additionnels. According to the preferred embodiment described, it may be noted that the driving roller 25 is arranged on a driving element, that is to say the central barrel 2 integral in rotation with the ring 1, while the rolling teeth 32 is arranged on a driven element, that is to say, the 2nd mobile element 31 of the flange 3. such an arrangement of the drive roller 25 of elastomeric material is advantageous over the drive member to improve the efficiency of transmission and to reduce production costs, especially when the circumference of the latter, in this case close to that of its lower part 23 - tapped for the possible fixing of a control rod - is significantly lower than the circumference of the driven element, as the flange 3, which saves elastomer material, and also simplifies the machining of the movable member 31 and the central barrel 2. Moreover, while the gear s by mutual rolling friction, it may be noted that the ratio of the circumferences of the driving element relative to the driven element allows to define a continuous gear ratio, unlike a ratio between numbers of teeth between a mobile leading and a driven mobile, which is a function of discrete values. It dispenses parallel pointed and deep traditional teeth and so suddenly indexing. Furthermore, the proposed solution also provides a very precise positioning of the mutual relative axes of rotation of the parts, also often called "spacing", these positioning sets can be recovered thanks to the plastic properties of the elastomer drive roller 25 which will then be more or less compressed against the rolling surface of the mobile to drive in rotation. The mounting of the control device is thus simplified, which allows additional productivity gains.
Sur la figure 4, la couronne de commande 1 est une couronne n'ayant qu'une seule position axiale vis-à-vis de la carrure, qui comporte un capot 1 1 saillant hors de la carrure 5 et qui peut être actionné en rotation par l'utilisateur de la montre. On pourrait toutefois utiliser une couronne vissée dans le cadre de l'invention sans que cela n'affecte le dispositif de transmission particulier proposé. Le capot 1 1 est monté au-dessus d'un tube 13, ici pourvu d'un filetage 131 pour son assemblage par vissage à la carrure 5 dans le premier trou traversant 51 taraudé dans lequel est introduit un cylindre central 12 solidaire du capot 1 1 , et qui est pourvu à son extrémité d'un trou borgne taraudé 121 pour l'assemblage à un canon central 2, présentant pour sa part une partie supérieure filetée 21 . Le canon central 2 forme ainsi un premier élément mobile de l'organe de commande que constitue la couronne 1 ; il est mobile en rotation par rapport au tube 13 vissé à la carrure 5 et c'est au niveau de son extrémité proximale, c'est-à- dire la partie inférieure taraudée 23 pour l'adjonction éventuellement d'un tige de commande - non représentée - qu'est agencé le galet d'entraînement 25 en matériau élastomère, en remplacement d'un pignon terminal comme sur des couronnes traditionnelles. Le galet d'entraînement 25 formé ici par un premier joint torique qui est disposé dans une rainure délimitée par deux butées axiales 24, agencées dans un plan perpendiculaire au premier axe de rotation 10 de la couronne, qui est aussi celui du canon central 2 et qui peuvent venir de matière avec le canon central 2 ou consister en des rondelles montées sur ce dernier. In FIG. 4, the control ring 1 is a ring having only one axial position vis-a-vis the middle part, which comprises a cover 1 1 projecting out of the caseband 5 and which can be actuated in rotation by the user of the watch. However, it would be possible to use a screw-retained crown within the scope of the invention without this affecting the particular transmission device proposed. The cover 1 1 is mounted above a tube 13, here provided with a thread 131 for its screw connection to the middle 5 in the first threaded through hole 51 in which is introduced a central cylinder 12 secured to the cover 1 1, and which is provided at its end with a threaded blind hole 121 for assembly to a central barrel 2, for its part having a threaded upper portion 21. The central barrel 2 thus forms a first movable member of the control member that constitutes the ring 1; it is rotatable relative to the tube 13 screwed to the middle part 5 and it is at its proximal end, that is to say the threaded lower part 23 for the possible addition of a control rod - not shown - that is arranged the drive roller 25 of elastomeric material, replacing a pinion terminal as on traditional crowns. The driving roller 25 formed here by a first O-ring which is arranged in a groove delimited by two axial abutments 24, arranged in a plane perpendicular to the first axis of rotation 10 of the crown, which is also that of the central barrel 2 and which can come from material with the central barrel 2 or consist of washers mounted on the latter.
Selon le mode de réalisation préférentiel illustré par la figure 4, on peut constater qu'un deuxième joint, de section de préférence rectangulaire ou carrée, est agencé autour du canon central 2, venant en appui sur un épaulement 22. Ce deuxième joint constitue la bague de friction 14, déjà visible sur les figures 3A,3B et 3C précédemment décrites, et qui est agencée entre le canon central 2 et le tube 13 vissé à la carrure 5 afin d'augmenter le couple d'actionnement de la couronne 1 , est ainsi éviter d'imposer tout mouvement parasite au réhaut 3. La bague de friction 14 est ici maintenue axialement entre l'épaulement 22 du canon central 2, qui peut également être formé par une rondelle, même éventuellement l'autre face de la rondelle utilisée comme butée axiale 24 pour le galet d'entraînement 25, et l'extrémité inférieure 132 du tube 13 vissé à la carrure 5. Légèrement comprimée entre l'extrémité inférieure 132 du tube 1 3, fixe par rapport à la carrure, et l'épaulement 22 solidaire en rotation du canon central 2, cette bague de friction permet donc de rendre plus difficile l'actionnement en rotation de la couronne 1 , et par suite sécurise plus efficacement la position angulaire du réhaut 3. Selon le mode de réalisation préférentiel décrit, on pourra constater que cette bague de friction 14 est interposée entre le tube According to the preferred embodiment illustrated in FIG. 4, it can be seen that a second seal, of preferably rectangular or square section, is arranged around the central barrel 2, bearing on a shoulder 22. This second seal constitutes the friction ring 14, already visible in Figures 3A, 3B and 3C previously described, and which is arranged between the central barrel 2 and the tube 13 screwed to the middle part 5 to increase the actuating torque of the ring 1, This is to avoid imposing any parasitic movement on the flange 3. The friction ring 14 is here held axially between the shoulder 22 of the central barrel 2, which can also be formed by a washer, even possibly the other face of the washer. used as axial stop 24 for the drive roller 25, and the lower end 132 of the tube 13 screwed to the middle part 5. Slightly compressed between the lower end 132 of the tube 1 3, fixed relative to the middle part, and the shoulder 22 integral in rotation with the central barrel 2, this friction ring therefore makes it more difficult to actuate the crown 1 in rotation, and consequently more effectively secures the angular position of the flange 3. According to the preferred embodiment described, it can be seen that this friction ring 14 is interposed between the tube
13 et une partie du canon central 2, ici l'épaulement 22, de telle sorte que les frottements sont agencés dans des plans perpendiculaires au premier axe de rotation 10 de la couronne 1 . On pourra qualifier ce type de frottement comme des frottements axiaux. Selon une variante, on pourrait toutefois envisager agencer une telle bague de friction 14 directement à l'intérieur du tube 13 de la couronne, dans une gorge aménagée directement sur le canon central 2, de telle sorte que les frottements ne soient plus axiaux, mais radiaux. L'avantage d'utiliser une bague de friction13 and a portion of the central barrel 2, here the shoulder 22, so that the friction is arranged in planes perpendicular to the first axis of rotation 10 of the ring 1. This type of friction can be described as axial friction. According to a variant, one could however envisage arranging such a friction ring 14 directly inside the tube 13 of the crown, in a groove arranged directly on the central barrel 2, so that the friction is no longer axial, but radial. The advantage of using a friction ring
14 axiale, comme celle représentée sur la figure 4, est qu'elle permet de s'affranchir d'épaisseurs de parois substantielles pour pouvoir y agencer une rainure suffisamment profonde et y loger l'élément de friction. Elle est ainsi compatible avec des tubes de couronne présentant des parties terminales de diamètre réduit, et à faible paroi en dessous de la partie filetée pour l'assemblage à la carrure, comme celle du tube 13 représenté, ce qui permet notamment de centrer au besoin un cercle d'emboîtage du mouvement. 14 axial, as shown in Figure 4, is that it allows to overcome substantial wall thicknesses to be able to arrange a sufficiently deep groove and lodge the friction element. It is thus compatible with crown tubes having parts terminals of reduced diameter, and low wall below the threaded portion for assembly to the middle part, such as that of the tube 13 shown, which allows in particular to center if necessary a casing circle movement.
La partie saillante de la couronne 1 hors de la carrure 5 montre une vue agrandie du détail des éléments illustrés à la figure 3B, à savoir un cylindre central 12 taraudé relié au canon central 2, la jupe axiale 1 1 1 et le couvercle 1 12 du capot, ainsi que les éléments d'étanchéité de la tête de couronne vis-à-vis de l'intérieur de la carrure, c'est-à-dire un troisième joint 16 torique, recouvert par un deckring 15, et maintenu par ailleurs axialement à l'aide d'une entretoise 17. Ces éléments n'ont toutefois pas d'influence sur le mécanisme d'engrenage hybride proposé dans le cadre de la présente invention, et en particulier sur l'agencement du galet d'entraînement 25.  The protruding portion of the ring 1 out of the middle part 5 shows an enlarged view of the detail of the elements illustrated in FIG. 3B, namely a central cylinder 12 threaded connected to the central barrel 2, the axial skirt 1 1 1 and the lid 1 12 of the hood, as well as the sealing elements of the crown head vis-à-vis the interior of the middle part, that is to say a third O-ring 16, covered by a deckring 15, and maintained by Moreover, these elements have no influence on the hybrid gear mechanism proposed in the context of the present invention, and in particular on the arrangement of the drive roller. 25.
Comme on peut le voir sur la figure 4, le galet d'entraînement 25 en matériau élastomère coopère avec une denture de roulement 32 agencée sur la face inférieure d'un corps de réhaut 3, qui constitue un mode de réalisation préférentiel d'organe tournant dans le cadre de l'invention. Le réhaut 3 est composé d'un deuxième élément mobile 31 , c'est-à-dire le corps du réhaut sur lequel est agencée la denture de roulement 32, recouvrant partiellement le bord du cadran 4, et qui pourvu d'un rebord périphérique 37 annulaire sur lequel est montée une rondelle en téflon 33 afin de minimiser les frottements avec la lunette 6, qui est par ailleurs recouverte de la glace 7 et montée à cran sur la carrure 5. Afin de garantir l'étanchéité vers l'intérieur la carrure, un joint d'étanchéité formé par un quatrième joint 61 torique est agencé entre la lunette 6 et la carrure 5, et similairement, un cinquième joint 81 torique est interposé entre le fond 8 et la carrure 5.  As can be seen in FIG. 4, the driving roller 25 made of elastomeric material cooperates with a rolling toothing 32 arranged on the lower face of a flange body 3, which constitutes a preferred embodiment of a rotating member. in the context of the invention. The flange 3 is composed of a second movable element 31, that is to say the body of the flange on which is arranged the rolling toothing 32, partially covering the edge of the dial 4, and which provided with a peripheral rim 37 ring on which is mounted a Teflon washer 33 to minimize friction with the bezel 6, which is also covered with the glass 7 and mounted notch on the middle part 5. In order to ensure the seal inward the middle, a seal formed by a fourth O-ring is arranged between the bezel 6 and the middle part 5, and similarly, a fifth O-ring 81 is interposed between the bottom 8 and the middle part 5.
Selon le mode de réalisation préférentiel illustré appliqué à l'entraînement en rotation d'un réhaut 3 par une couronne, la denture de roulement 32 s'étend essentiellement dans un plan d'engrenage parallèle au premier axe de rotation 10 de la couronne 1 , c'est-à-dire perpendiculairement au deuxième axe de rotation 30 du réhaut 3. Par conséquent, le mécanisme d'engrenage hybride fait office de renvoi sans nécessiter l'emploi de dentures inclinées pour gagner de la place en hauteur. On comprendra toutefois qu'il serait possible d'agencer un dispositif d'engrenage hybride selon l'invention comprenant une denture de roulement 32 oblique, notamment à 45 degrés par rapport à l'axe de rotation du mobile mené ou menant, pour effectuer un renvoi à 90 degrés, ou encore agencer une denture de roulement 32 s'étendant non plus dans un plan mais dans une portion cylindrique en périphérie d'un mobile coopérant avec un mobile tournant selon un axe parallèle, afin d'assurer la transmission en rotation à un deuxième mobile tournant selon un axe de rotation parallèle. According to the preferred embodiment illustrated applied to the rotary drive of a flange 3 by a ring gear, the rolling toothing 32 extends essentially in a parallel gear plane. at the first axis of rotation 10 of the ring 1, that is to say perpendicular to the second axis of rotation 30 of the flange 3. Consequently, the hybrid gear mechanism acts as a return without requiring the use of inclined teeth to gain space in height. However, it will be understood that it would be possible to arrange a hybrid gear device according to the invention comprising an inclined bearing toothing 32, in particular 45 degrees relative to the axis of rotation of the driven or driven mobile, to effect a 90 degree return, or arrange a rolling toothing 32 extending not in a plane but in a cylindrical portion at the periphery of a mobile cooperating with a mobile rotating along a parallel axis, to ensure the transmission in rotation a second mobile rotating along a parallel axis of rotation.
La figure 5 montre le détail d'une denture de roulement 32 selon un mode de réalisation préférentiel, où elle est agencée sur la face inférieure du deuxième mobile 31 du réhaut et s'étend le long d'une surface annulaire située dans un plan perpendiculaire au deuxième axe de rotation 30, c'est à dire le plan d'engrenage 35, référencé sur la figure 3B. La denture de roulement 32 est formée ici d'une denture plate 36, dont le profil de denture est supérieur à 90 degrés, et de préférence entre 100 et 130 degrés, ici 120 degrés sur la figure 5. Un tel profil ne serait pas adapté pour un engrenage mutuel de dentures sur des mobiles adjacents en raison du risque de glissement, mais est parfaitement adapté ici pour limiter l'encombrement et garantir la transmission de la rotation par roulement du galet d'entraînement 25 en matériau élastomère, légèrement comprimé dans les creux de cette denture plate 36. A titre d'alternative, on pourrait employer un moletage, formé par exemple par des stries obliques s'étendant dans une direction unique ou deux directions symétriquement opposées, la différence avec la denture plate correspondant à une profondeur moins importante des empreintes formées sur la denture de roulement 32, permettant ainsi un léger gain en hauteur additionnel. Il est également possible de remplacer la denture plate 36 ou le moletage par une surface plane très rugueuse afin de permettre la transmission du roulement dans risque de glissement; néanmoins une telle alternative présenterait le risque d'user rapidement le galet d'entraînement 25 en arrachant du matériau élastomère en raison du caractère très abrasif qui serait requis pour garantir la qualité de la transmission, et nécessiter ainsi fréquemment le son remplacement. En tout état de cause, si une denture plate 36 est utilisée ou un moletage, la profondeur des dentures ou des empreintes n'excédera de préférence pas un quart de millimètre (c'est-à-dire 0.25mm), et selon le mode de réalisation préférentiel décrit, cette profondeur est de préférence comprise entre 0.05 et 0.20mm, afin de gagner le maximum de hauteur possible par rapport à un mécanisme d'engrenage classique. FIG. 5 shows the detail of a rolling toothing 32 according to a preferred embodiment, where it is arranged on the lower face of the second mobile 31 of the flange and extends along an annular surface situated in a perpendicular plane the second axis of rotation 30, that is to say the gear plane 35, referenced in Figure 3B. The rolling toothing 32 is formed here of a flat toothing 36, whose tooth profile is greater than 90 degrees, and preferably between 100 and 130 degrees, here 120 degrees in Figure 5. Such a profile would not be suitable for a mutual gearing of teeth on adjacent mobiles because of the risk of slippage, but is perfectly suitable here to limit the size and ensure the transmission of the rotational rotation of the drive roller 25 of elastomeric material, slightly compressed in the hollow of this flat toothing 36. Alternatively, a knurling could be used, formed for example by oblique striations extending in a single direction or two symmetrically opposite directions, the difference with the flat toothing corresponding to a depth less significant imprints formed on the rolling teeth 32, thus allowing a slight gain in additional height. It is also possible to replace the flat toothing 36 or the knurling by a surface flat very rough to allow the transmission of the bearing in risk of sliding; however, such an alternative would present the risk of rapidly using the drive roller 25 tearing elastomeric material because of the very abrasive nature that would be required to ensure the quality of the transmission, and thus frequently require replacement. In any case, if a flat toothing 36 is used or a knurling, the depth of the teeth or fingerprints will preferably not exceed a quarter of a millimeter (that is to say 0.25 mm), and according to the mode preferred embodiment described, this depth is preferably between 0.05 and 0.20mm, in order to gain the maximum possible height compared to a conventional gear mechanism.

Claims

REVENDICATIONS
1 . Système de commande pour organe tournant d'une pièce d'horlogerie, comprenant un organe de commande pour actionner ledit organe tournant, et un dispositif de transmission entre ledit organe de commande et ledit organe tournant, caractérisé en ce que ledit dispositif de transmission est un dispositif d'engrenage hybride comprenant un premier élément mobile autour d'un premier axe de rotation (10) pourvu d'un galet d'entraînement (25) en matériau élastomère, et un deuxième élément mobile (31 ) autour d'un deuxième axe de rotation (30) pourvu d'une denture de roulement (32), ledit galet d'entraînement (25) coopérant par friction avec ladite denture de roulement (32). 1. Control system for a rotating member of a timepiece, comprising a control member for actuating said rotating member, and a transmission device between said control member and said rotating member, characterized in that said transmission device is a hybrid gear device comprising a first member movable about a first axis of rotation (10) provided with a drive roller (25) of elastomeric material, and a second movable member (31) about a second axis rotating member (30) provided with a rolling toothing (32), said driving roller (25) frictionally engaging said rolling toothing (32).
2. Système de commande pour organe tournant d'une pièce d'horlogerie selon la revendication 1 , caractérisé en ce que ladite denture de roulement (32) est formée par une denture plate (36) dont la profondeur est comprise entre 0.05 et 0.20mm.  2. Control system for a rotating member of a timepiece according to claim 1, characterized in that said toothing (32) is formed by a flat toothing (36) whose depth is between 0.05 and 0.20mm .
3. Système de commande pour organe tournant d'une pièce d'horlogerie selon l'une des revendications précédentes, caractérisé en ce que ledit galet d'entraînement (25) en matériau élastomère est formé par un premier joint torique.  3. Control system for a rotating member of a timepiece according to one of the preceding claims, characterized in that said drive roller (25) of elastomeric material is formed by a first O-ring.
4. Système de commande pour organe tournant d'une pièce d'horlogerie, caractérisé en ce que ledit premier axe de rotation (10) dudit premier élément mobile est perpendiculaire audit deuxième axe de rotation (30) dudit deuxième élément mobile (31 ).  4. Control system for a rotating member of a timepiece, characterized in that said first axis of rotation (10) of said first movable member is perpendicular to said second axis of rotation (30) of said second movable member (31).
5. Système de commande pour organe tournant d'une pièce d'horlogerie selon la revendication 4, ledit galet d'entraînement (25) coopérant par friction avec ladite denture de roulement (32) essentiellement dans un plan d'engrenage (35) perpendiculaire audit deuxième axe de rotation (30) dudit deuxième élément mobile (31 ).  5. Control system for a rotating member of a timepiece according to claim 4, said drive roller (25) frictionally cooperating with said rolling toothing (32) essentially in a gear plane (35) perpendicular said second axis of rotation (30) of said second movable member (31).
6. Système de commande pour organe tournant d'une pièce d'horlogerie selon l'une des revendications précédentes, caractérisé en ce que ledit organe tournant est un réhaut (3), et que ledit organe de commande est une couronne (1 ). 6. Control system for a rotating member of a timepiece according to one of the preceding claims, characterized in that said rotating member is a flange (3), and said control member is a ring (1).
7. Système de commande pour organe tournant d'une pièce d'horlogerie selon la revendication 6, caractérisé en ce qu'il comprend par ailleurs une bague de friction (14) formée par un deuxième joint de section rectangulaire mobile autour dudit premier axe de rotation (10) de ladite couronne (1 ). 7. Control system for a rotating member of a timepiece according to claim 6, characterized in that it further comprises a friction ring (14) formed by a second seal of rectangular section movable about said first axis of rotation (10) of said ring (1).
8. Organe de commande d'une pièce d'horlogerie, caractérisé en ce qu'il comprend un premier élément mobile autour d'un premier axe de rotation (10) sur lequel est monté un galet d'entraînement (25) en matériau élastomère.  8. Control member of a timepiece, characterized in that it comprises a first element movable about a first axis of rotation (10) on which is mounted a drive roller (25) of elastomeric material .
9. Organe de commande d'une pièce d'horlogerie selon la  9. Control organ of a timepiece according to the
revendication 8, caractérisé en ce qu'il est formé par une couronne (1 ) comportant un tube (13), un canon central (2) et un capot (1 1 ), ledit canon central (2) étant solidaire en rotation par rapport audit capot (1 1 ), caractérisé en ce que ledit premier élément mobile dudit organe de commande est formé par ledit canon central (2), mobile en rotation par rapport audit tube (13). claim 8, characterized in that it is formed by a ring (1) comprising a tube (13), a central barrel (2) and a cover (1 1), said central barrel (2) being integral in rotation relative to said hood (1 1), characterized in that said first movable member of said control member is formed by said central barrel (2), rotatable relative to said tube (13).
10. Organe de commande d'une pièce d'horlogerie selon la  10. Control member of a timepiece according to the
revendication 8 ou 9, caractérisé en ce que ledit canon central (2) est muni de butées axiales (24) disposées dans des plans perpendiculaires audit premier axe de rotation (10), entre lesquelles est logé un premier joint torique formant ledit galet d'entraînement (25). claim 8 or 9, characterized in that said central barrel (2) is provided with axial stops (24) arranged in planes perpendicular to said first axis of rotation (10), between which is housed a first O-ring forming said roller of drive (25).
1 1 . Organe de commande d'une pièce d'horlogerie selon l'une des revendications 8 à 10, caractérisé en ce qu'il comprend par ailleurs une bague de friction (14) entre ledit tube (13) et ledit canon central (2), formée par un deuxième joint de section rectangulaire agencé autour dudit premier axe de rotation (10) de ladite couronne (1 ).  1 1. Control member of a timepiece according to one of claims 8 to 10, characterized in that it furthermore comprises a friction ring (14) between said tube (13) and said central barrel (2), formed by a second rectangular section gasket arranged around said first axis of rotation (10) of said ring (1).
12. Organe de commande d'une pièce d'horlogerie selon la  12. Control organ of a timepiece according to the
revendication 1 1 , caractérisé en ce que ledit deuxième joint est maintenu axialement entre l'extrémité inférieure (132) dudit tube (13) et un épaulement (22) dudit canon central (2). claim 1 1, characterized in that said second seal is held axially between the lower end (132) of said tube (13) and a shoulder (22) of said central barrel (2).
13. Organe tournant d'une pièce d'horlogerie mobile autour d'un deuxième axe de rotation (30), caractérisé en ce qu'il comprend un deuxième élément mobile (31 ) présentant une denture de roulement (32).  13. A rotating member of a mobile timepiece around a second axis of rotation (30), characterized in that it comprises a second movable member (31) having a rolling toothing (32).
14. Organe tournant d'une pièce d'horlogerie selon la revendication 13, caractérisé en ce qu'il consiste en un réhaut (3), et que ladite denture de roulement (32) est formée d'une denture plate (36) s'étendant essentiellement dans un plan d'engrenage (35) perpendiculaire audit deuxième axe de rotation (30). 14. rotating member of a timepiece according to claim 13, characterized in that it consists of a flange (3), and that said toothing of Bearing (32) is formed of a flat toothing (36) extending substantially in a gear plane (35) perpendicular to said second axis of rotation (30).
15. Organe tournant d'une pièce d'horlogerie selon la revendication 14, ledit réhaut (3) tournant étant composé d'un dit deuxième élément mobile (31 ) pourvu d'un rebord périphérique (37) annulaire surmonté d'une rondelle en téflon (33).  15. rotating member of a timepiece according to claim 14, said rotating flange (3) being composed of a said second movable element (31) provided with an annular peripheral flange (37) surmounted by a washer teflon (33).
EP15708215.7A 2014-03-26 2015-03-06 Timepiece comprising a turning collar Active EP3123251B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP14161801 2014-03-26
PCT/EP2015/054744 WO2015144423A1 (en) 2014-03-26 2015-03-06 Control system for a timepiece

Publications (2)

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EP3123251A1 true EP3123251A1 (en) 2017-02-01
EP3123251B1 EP3123251B1 (en) 2021-04-28

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EP15708215.7A Active EP3123251B1 (en) 2014-03-26 2015-03-06 Timepiece comprising a turning collar

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US (1) US10018963B2 (en)
EP (1) EP3123251B1 (en)
JP (1) JP6262364B2 (en)
CN (1) CN106133619B (en)
WO (1) WO2015144423A1 (en)

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Publication number Publication date
CN106133619B (en) 2019-12-03
CN106133619A (en) 2016-11-16
US10018963B2 (en) 2018-07-10
US20170123377A1 (en) 2017-05-04
EP3123251B1 (en) 2021-04-28
JP6262364B2 (en) 2018-01-17
JP2017508159A (en) 2017-03-23
WO2015144423A1 (en) 2015-10-01

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