EP2112564B1 - Clutch device - Google Patents

Clutch device Download PDF

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Publication number
EP2112564B1
EP2112564B1 EP20080154999 EP08154999A EP2112564B1 EP 2112564 B1 EP2112564 B1 EP 2112564B1 EP 20080154999 EP20080154999 EP 20080154999 EP 08154999 A EP08154999 A EP 08154999A EP 2112564 B1 EP2112564 B1 EP 2112564B1
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EP
European Patent Office
Prior art keywords
wheel
clutch
driven
wheels
driving
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.)
Not-in-force
Application number
EP20080154999
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German (de)
French (fr)
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EP2112564A1 (en
Inventor
Michel Belot
Franck Orny
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.)
SOCIETE ANONYME DE LA MANUFACTURE D'HORLOGERIE AUD
Original Assignee
Michel Belot
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.)
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Publication date
Application filed by Michel Belot filed Critical Michel Belot
Priority to EP20080154999 priority Critical patent/EP2112564B1/en
Priority to ES08154999T priority patent/ES2401928T3/en
Publication of EP2112564A1 publication Critical patent/EP2112564A1/en
Application granted granted Critical
Publication of EP2112564B1 publication Critical patent/EP2112564B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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    • 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
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
    • G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
    • G04F7/08—Watches or clocks with stop devices, e.g. chronograph
    • G04F7/0823—Watches or clocks with stop devices, e.g. chronograph with couplings between the chronograph mechanism and the base movement
    • G04F7/0828—Watches or clocks with stop devices, e.g. chronograph with couplings between the chronograph mechanism and the base movement acting in the plane of the movement

Definitions

  • the present invention relates to a clutch device, in particular for a clockwork movement, intended to connect a driving wheel to a driven wheel.
  • the invention also relates to a watch movement and a timepiece comprising such a clutch device. More particularly, the invention is intended to be implemented in a chronograph mechanism, the chronograph wheel corresponding to the driven wheel.
  • Clock movements sometimes include mechanisms that are not constantly moving, and that are implemented only on demand, regardless of for example the indication of time.
  • Such mechanisms that can operate on demand are for example the chronograph mechanisms used to time a time, regardless of the time indicated by the movement of a watch.
  • This chronograph mechanism comprises a chronograph wheel intended to carry at least one needle for displaying a timed time, a driving wheel linked to a movement energy source, a clutch wheel capable of occupying two positions. and for connecting the chronograph wheel to the drive wheel in one of these positions, a clutch lever for moving the clutch wheel between its first position in which the mechanism is in operation, and its second position in which the mechanism is off, a cam intended to cooperate with the clutch rocker to define the first and second positions of the clutch wheel, and control means actuating the cam and, by it, the rocker clutch to move the clutch wheel from one position to another.
  • the cam is for example a column wheel.
  • An object of the present invention is therefore to overcome these disadvantages, by proposing a clutch device which allows in particular to eliminate any movement behind the wheel driven at the time of clutch, and more particularly any jump back a chronograph hand.
  • this clutch device requires less adjustment than the known mechanisms.
  • Such a device makes it possible to drive the driven wheel always in the same direction so that no movement behind said driven wheel is allowed.
  • said satellite may comprise a first and a second coaxial wheel and integral in rotation, the first wheel being arranged to mesh with the internal toothing of the clutch wheel and the second wheel being arranged to be able to mesh with the wheel, driving or driven, engaged with the satellite in the engaged position, each of said first and second wheels being provided with a set of teeth defined by a head diameter and a pitch diameter, the head diameter of the second wheel being substantially equal to the pitch diameter of the first wheel.
  • said carrier may be arranged to carry n satellites, where n is an integer greater than or equal to 1, said carrier being disposed substantially coaxially with the axis of the clutch wheel and being rotatably mounted around this axis.
  • said carrier may have on its periphery 2 x n actuating fingers constituting said actuating means.
  • the clutch wheel may comprise a circular plate secured to the axis of the clutch wheel, surmounted by a ring having the internal toothing, and connecting means arranged to cooperate with the driving or driven wheel, said connecting means being integral with the axis of the clutch wheel.
  • the clutch wheel may consist of a circular board having an external toothing arranged to cooperate with the driving or driven wheel, said circular board being surmounted by a concentric ring of smaller diameter, presenting the internal toothing, said clutch wheel being mounted free to rotate about its axis.
  • the positioning means comprise a jumper having adjusting means.
  • each satellite may comprise a first and a second coaxial wheel and integral in rotation, the first wheel being arranged to mesh with the internal toothing of the clutch wheel and the second wheel being arranged to mesh with one or the other of the driving and driven wheels in the engaged position, each of said first and second wheels being provided with a set of teeth defined by a head diameter and a pitch diameter, the head diameter of the second wheel being substantially equal to the pitch diameter of the first wheel.
  • the clutch wheel may consist of a circular board mounted to rotate about its axis, and surmounted by a ring having the internal toothing.
  • the invention also relates to a watch movement comprising at least one driving wheel and at least one driven wheel, characterized in that it comprises a clutch device as defined above, and control means arranged to engage or triggering said clutch device on demand by means of actuating the planet carrier.
  • control means may comprise at least one control lever arranged to cooperate with the means for actuating the planet carrier, said control lever being connected to at least one control member, arranged to operate at the request said control lever.
  • the driven wheel of the movement is a chronograph wheel carrying a needle for displaying a timed time.
  • the movement according to the invention may comprise at least two driven wheels arranged so that the clutch device can occupy several engaged positions in which it cooperates with one and / or the other of said driven wheels.
  • the movement according to the invention may also comprise at least two driving wheels, arranged so that the clutch device can occupy several engaged positions, in which it cooperates with one or other of said driving wheels.
  • the movement according to the invention may comprise at least two driving wheels and at least two wheels driven, said wheels being arranged so that the clutch device can occupy several engaged positions, in which it cooperates with one or the other of said driving wheels and with one and / or the other of said driven wheels.
  • the present invention also relates to a timepiece comprising a movement as described above. Brief description of the drawings
  • the clutch device 1 is intended to connect a driving wheel 2 to a driven wheel 3.
  • the driving wheel 2 is for example the seconds wheel of a watch movement
  • the driven wheel 3 is a chronograph wheel carrying a needle 3a for displaying the timed time.
  • Said device 1 comprises firstly a clutch wheel 4 consisting of a circular board 5 having an external toothing 5a, surmounted by a concentric ring 6, of smaller diameter, and having an internal toothing 6a.
  • the circular board 5 and the concentric ring 6 are integral.
  • the clutch wheel 4 is mounted free to rotate about a central axis 7 fixed to the frame 8 of the clockwork movement, for example between two plates.
  • the clutch wheel may comprise a circular board integral with the axis of the clutch wheel, surmounted by a ring having the internal toothing.
  • the outer toothing 5a of the clutch wheel 4 previously described is replaced by connecting means integral with the axis of the clutch wheel, and arranged to cooperate with a suitable driving gear.
  • These connecting means may for example comprise a pinion integral with the axis of the clutch wheel.
  • a planet carrier 10 coaxial with the central axis 7 of the clutch wheel 4.
  • the planet carrier 10 is rotatably mounted around this central axis 7.
  • the planet carrier 10 comprises a base 10a and an upper portion 10b, between which three satellites 11a, 11b, 11c are mounted free to rotate around three axes 12 distributed regularly around the planet carrier 10. It is obvious that the satellites can also not be distributed regularly.
  • the upper part 10b of the planet carrier 10 is generally circular in shape and has, regularly distributed around its periphery, six actuating fingers 15 constituting means for actuating the planet carrier 10, and arranged to make it pass from the one to the other of the two positions disengaged / engaged.
  • said control means comprise a control lever 17 mounted to move on the support and carrying an index 17a movable about an axis 18.
  • the end 19 of the index 17a is arranged to cooperate successively with the actuating fingers 15 of the planet carrier 10 and driving it in rotation so as to rotate it about the central axis 7 by 1/6 of a turn at each loading of the control lever, corresponding to the passage to one either of the two positions disengaged / engaged.
  • a return spring (not shown) is provided to return the control lever to the initial position, abutting against an actuating finger 15, waiting for a new bias.
  • a spring 21 is provided to maintain the support of the control index 17a on the planet carrier 10.
  • control lever 17 is connected to a control member (not shown), arranged to operate on demand said control lever 17.
  • This control member is for example of the push-stop type, traditionally mounted on the middle of the box and used in the chronograph mechanisms. It is obvious that other control means can be used.
  • the positioning jumper 22 comprises a head 22a provided with two inclined planes, each of them resting on one of two positioning fingers 15 consecutive when the planet carrier 10 occupies one or the other of the two disengaged / engaged positions.
  • the position of the jumper 22 and the spring 21 can be adjusted by adjustment means, for example eccentrics, not shown in the drawing.
  • the different elements of the clutch device 1 are sized and arranged so that the satellites 11a, 11b, 11c cooperate with the internal gear 6a of the clutch wheel 4.
  • the satellites 11a, 11b, 11c must, in addition, be thick enough to also cooperate with the driven wheel 3 in the engaged position, once the clutch device 1 mounted in a clockwork movement.
  • the external toothing 5a of the clutch wheel 4 is dimensioned so as to mesh with the driving wheel 2 once the clutch device 1 has been mounted.
  • the satellites 11a, 11b, 11c and the actuating fingers 15 are arranged around the planet carrier 10 so that, once the clutch device 1 is mounted in a clockwork movement, from the disengaged position, the 1/6 turn rotation of one of the actuating fingers 15 pushed by the index 17a of the control lever 17 causes the rotation 1/6 turn of the planet carrier 10 and its satellites 11a, 11b, 11c.
  • the satellite 11a which cooperates with the driven wheel 3 following the displacement of the actuating finger 15a, as shown in FIG. figure 3 .
  • the number of satellites can vary and that it is possible to provide for example 1, 2, 3, 4 satellites or more.
  • the skilled person can calculate the number and shape of teeth, the number and dimensions of satellites, and the dimensions of the different wheels, depending on the desired dimensions for this type of mechanism.
  • three satellites, each having 20 teeth can be provided with a driven wheel of 60 teeth, an internal toothing of 60 teeth, an external toothing of 80 teeth and a driving wheel of 80 teeth.
  • the jumper 22 can be fixed on the frame by means for moving it slightly to change its position and thus adjust this alignment.
  • the control lever 17 is positioned against a stop secured to the frame so that the index 17a is in the vicinity of one of the actuating fingers 15.
  • the driving wheel 2 drives the clutch wheel 4 by meshing with the external toothing 5a.
  • the satellites 11a, 11b, 11c rotate on themselves by meshing with the internal toothing 6a of the clutch wheel 4.
  • the clutch device 1 When the chronograph is not used, the clutch device 1 is in the disengaged position, in accordance with the Figures 2 and 3 . In this position, none of the satellites 11a, 11b, 11c meshes with the driving wheel 3.
  • the driven wheel 3 In the engaged position, the driven wheel 3 is driven by the satellite 11a itself driven by the internal toothing 6a of the clutch wheel 4.
  • the user presses again on the control member which actuates the control lever 17.
  • Its index 17a presses the actuating finger 15b to move it 1/6 of a turn in the direction counterclockwise and thus move 1/6 turn the satellite carrier 10 in the counterclockwise direction so that the satellite 11a disengages the driven wheel 3.
  • the clutch device 1 then returns to the disengaged position.
  • the control lever 17 then resumes its initial position in the vicinity of the next actuating finger 15c.
  • the satellite 11b has in turn placed close to the driven wheel 3 to be ready to go into the engaged position at the next actuation of the control lever 17.
  • the clutch device according to the invention is advantageous in that it makes it possible to avoid a jump back of the driven wheel and therefore of the needle carried by this wheel at the time of clutch, that the driven wheel is synchronized or not with the driving wheel.
  • the driven wheel 3 comprises twenty-one teeth, as well as the internal toothing 6a of the wheel clutch, while the satellite 11 comprises seven teeth.
  • the driven wheel 3 is synchronized with the drive wheel and with the internal toothing 6a of the clutch wheel.
  • the arrows F1, F2, F3 and F4 respectively illustrate the rotational movement of the planet carrier, the satellite, the clutch wheel and the driven wheel.
  • the satellite 11 When the satellite 11 arrives near the driven wheel 3 to move into the engaged position, it is driven on the one hand by a counterclockwise rotation movement due to the displacement of the planet carrier and on the other hand by a rotational movement in the clockwise direction meshing with the internal toothing 6a of the clutch wheel in response to the displacement imposed by the carrier. Due to this compound movement, the tooth 30 of the satellite 11, which is closest to the driven wheel 3 intersects the head circle of the teeth of the driven wheel 3 at an angle close to 90 °. There is therefore virtually no relative tangential movement of the toothing of the satellite relative to that of the driven wheel. Thus, the driven wheel 3 can not be driven back at the time of clutch.
  • the principle is the same when the driven wheel 3 is not synchronized with the driving wheel and the internal toothing 6a of the clutch wheel. More particularly with reference to the figure 7 when the satellite 11 arrives near the driven wheel 3 to move into the engaged position, the tooth of the satellite 11 which is closest to the driven wheel 3, driven by the compound rotation movement described above, will enter tangentially into the teeth of the driven wheel and press against the tooth of the driven wheel 3 by imparting to it a rotational movement in the same direction of rotation as that of the driven wheel 3 once engaged. Thus, the driven wheel 3 can not not be dragged back at the time of clutch. Therefore, the needle 3a carried by the driven wheel 3, and more particularly the chronograph hand can not jump back.
  • the clutch device according to the invention is also advantageous in that it eliminates any adjustment of the penetration of the various wheels required in traditional chronograph mechanisms.
  • the conditions of penetration of the satellite teeth into the driven wheel can be adjusted by changing the structure of the satellite.
  • An exemplary embodiment is shown on the figure 8 .
  • the satellites 11 each respectively comprise a first wheel 40 and a second wheel 41 coaxial and rotationally fixed about their respective axis 12, the first wheel 40 being arranged to mesh with the internal toothing 6a of the clutch wheel 4 and the second wheel 41 being arranged to be able to mesh with the driven wheel 3.
  • the other elements of the clutch device are identical to those described above.
  • the first wheel 40 and the second wheel 41 are each provided with a set of teeth defined by a head diameter and a pitch diameter, the head diameter of the second wheel 41 being substantially equal to the pitch diameter of the first wheel 40.
  • This characteristic makes it possible to give the teeth of the second wheel 41 a trajectory such that the heads of these teeth have a substantially radial trajectory when they mesh with the driven wheel 3, which makes it possible to obtain greater precision in the movements during the penetration into the driven wheel.
  • the leading and driven wheel positions were reversed.
  • the driving wheel 2 which is arranged to cooperate with the second wheel 41 of the satellite 11 when the device is in the engaged position
  • the driven wheel 3 which cooperates with the external toothing 5a of the wheel of clutch 4. Therefore, in the disengaged position, only the driving wheel 2 rotates.
  • the first wheel 40 of the satellite 11 is rotated only in the engaged position, to drive in turn the clutch wheel 4 by meshing with the internal toothing 6a, then the driven wheel 3 by meshing with the toothing outside 5a.
  • the mechanism for actuating the planet carrier 10 to move from one to the other of the engaged / disengaged positions by means of a control lever is identical to that described above.
  • the clutch wheel consists of a circular board mounted to rotate about its axis, and surmounted by a ring having the internal toothing.
  • the carrier comprises satellites, and the outer toothing of the clutch wheel is replaced by the toothing of the satellite which, in the engaged position, is at the level of the driving wheel to cooperate with it.
  • the satellite meshing with the driving wheel then causes the rotation of the clutch wheel by meshing with the internal toothing of the clutch wheel.
  • the satellite then meshes with the gear wheel meshing with the internal toothing of the clutch wheel.
  • each satellite may comprise a first and a second coaxial wheel and integral in rotation, the first wheel being arranged to mesh with the internal toothing of the clutch wheel and the second wheel being arranged to be able to mesh with one or the other.
  • other wheels driving and driven in the engaged position, each of said first and second wheels being provided with a set of teeth defined by a head diameter and a pitch diameter, the head diameter of the second wheel being substantially equal to the pitch diameter of the first first wheel.
  • the clutch device according to the invention is described here as a clutch device in a chronograph mechanism, but it is obvious that it can be used in any mechanical application requiring the connection to the request of a wheel driving with a driven wheel.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Unknown Time Intervals (AREA)

Description

Domaine techniqueTechnical area

La présente invention concerne un dispositif d'embrayage notamment pour un mouvement d'horlogerie, destiné à relier une roue menante à une roue menée. L'invention concerne également un mouvement d'horlogerie ainsi qu'une pièce d'horlogerie comprenant un tel dispositif d'embrayage. Plus particulièrement, l'invention est destinée à être mise en oeuvre dans un mécanisme de chronographe, la roue de chronographe correspondant à la roue menée.The present invention relates to a clutch device, in particular for a clockwork movement, intended to connect a driving wheel to a driven wheel. The invention also relates to a watch movement and a timepiece comprising such a clutch device. More particularly, the invention is intended to be implemented in a chronograph mechanism, the chronograph wheel corresponding to the driven wheel.

Etat de la techniqueState of the art

Les mouvements d'horlogerie comprennent parfois des mécanismes qui ne sont pas constamment en mouvement, et qui sont mis en oeuvre uniquement à la demande, indépendamment par exemple de l'indication de l'heure.Clock movements sometimes include mechanisms that are not constantly moving, and that are implemented only on demand, regardless of for example the indication of time.

De tels mécanismes pouvant fonctionner à la demande sont par exemple les mécanismes de chronographe, utilisés pour chronométrer un temps, indépendamment de l'heure indiquée par le mouvement d'une montre.Such mechanisms that can operate on demand are for example the chronograph mechanisms used to time a time, regardless of the time indicated by the movement of a watch.

Un type de mécanisme de chronographe est décrit par exemple dans le livre de théorie d'horlogerie de C-A. Reymondin et al., pages 232 et 233 (Fédération des Ecoles Techniques de Suisse, 1998, ISBN 2-940025-10-X ), XP 002509239.A type of chronograph mechanism is described for example in the book of watchmaking theory of IT. Reymondin et al., Pp. 232 and 233 (Federation of Technical Schools of Switzerland, 1998, ISBN 2-940025-10-X ), XP 002509239.

Ce mécanisme de chronographe comporte une roue de chronographe destinée à porter au moins une aiguille pour l'affichage d'un temps chronométré, une roue menante liée à une source d'énergie du mouvement, une roue d'embrayage susceptible d'occuper deux positions et destinée à relier la roue de chronographe à la roue menante dans l'une de ces positions, une bascule d'embrayage destinée à assurer le déplacement de la roue d'embrayage, entre sa première position dans laquelle le mécanisme est en fonction, et sa deuxième position dans laquelle le mécanisme est hors fonction, une came destinée à coopérer avec la bascule d'embrayage pour définir les première et deuxième positions de la roue d'embrayage, et des moyens de commande actionnant la came et, par elle, la bascule d'embrayage pour faire passer la roue d'embrayage de l'une à l'autre position. La came est par exemple une roue à colonnes.This chronograph mechanism comprises a chronograph wheel intended to carry at least one needle for displaying a timed time, a driving wheel linked to a movement energy source, a clutch wheel capable of occupying two positions. and for connecting the chronograph wheel to the drive wheel in one of these positions, a clutch lever for moving the clutch wheel between its first position in which the mechanism is in operation, and its second position in which the mechanism is off, a cam intended to cooperate with the clutch rocker to define the first and second positions of the clutch wheel, and control means actuating the cam and, by it, the rocker clutch to move the clutch wheel from one position to another. The cam is for example a column wheel.

Lors de l'enclenchement du mécanisme du chronographe, on constate un léger mouvement de rotation de la bascule d'embrayage pour assurer l'engrenage entre la roue d'embrayage et la roue de chronographe. Ceci engendre un mouvement de translation qui peut se traduire par un déplacement de l'aiguille de chronographe plus grand que le saut normal. Ce déplacement est particulièrement visible quand il est important ou quand le mouvement de translation entraine un saut en arrière de l'aiguille de chronographe. Ce saut anormal de l'aiguille est préjudiciable d'une part à la précision de la mesure du temps et d'autre part à l'aspect esthétique du chronographe.When the chronograph mechanism is engaged, there is a slight rotational movement of the clutch rocker to ensure the gearing between the clutch wheel and the chronograph wheel. This causes a translational movement that can result in a shift of the chronograph hand larger than the normal jump. This movement is particularly visible when it is important or when the translational movement causes a jump back of the chronograph hand. This abnormal jump of the needle is detrimental on the one hand to the accuracy of the measurement of time and on the other hand to the aesthetic appearance of the chronograph.

De plus, il est nécessaire de prévoir différents excentriques afin de régler la pénétration des différentes roues lors du montage de la montre, ce qui peut être délicat et nécessiter un certain temps. D'autre part, les excentriques peuvent se dérégler, ce qui peut générer des imprécisions dans la transmission du mouvement entre les différentes roues à relier.In addition, it is necessary to provide different eccentric to adjust the penetration of the different wheels when mounting the watch, which can be difficult and require some time. On the other hand, the eccentrics may become unregulated, which can generate inaccuracies in the transmission of movement between the different wheels to be connected.

Un but de la présente invention est donc de pallier ces inconvénients, en proposant un dispositif d'embrayage qui permet notamment de supprimer tout mouvement en arrière de la roue menée au moment de l'embrayage, et plus particulièrement tout saut en arrière d'une aiguille de chronographe. De plus, ce dispositif d'embrayage nécessite moins de réglage que les mécanismes connus.An object of the present invention is therefore to overcome these disadvantages, by proposing a clutch device which allows in particular to eliminate any movement behind the wheel driven at the time of clutch, and more particularly any jump back a chronograph hand. In addition, this clutch device requires less adjustment than the known mechanisms.

Divulgation de l'inventionDisclosure of the invention

A cet effet, et conformément à la présente invention, il est proposé un dispositif d'embrayage, destiné à relier au moins une roue menante à au moins une roue menée, caractérisé en ce qu'il comprend:

  • une roue d'embrayage comprenant une denture intérieure,
  • un porte-satellite sur lequel au moins un satellite est monté libre en rotation et agencé d'une part pour engrener avec la denture intérieure et d'autre part pour pouvoir occuper, à la demande, au moins deux positions dans lesquelles le satellite est respectivement en position embrayée et débrayée, à savoir une position embrayée dans laquelle l'un de la roue d'embrayage et du satellite est relié cinématiquement à la roue menée et l'autre est relié cinématiquement à la roue menante, et une position débrayée dans laquelle ledit satellite ne coopère plus avec la roue, menante ou menée, en prise avec lui en position embrayée,
  • des moyens d'actionnement du porte-satellite agencés pour le faire passer à la demande de l'une à l'autre des deux positions débrayée/embrayée, et
  • des moyens de positionnement du porte-satellite, agencés pour le positionner dans lesdites deux positions.
For this purpose, and in accordance with the present invention, there is provided a clutch device for connecting at least one driving wheel to at least one driven wheel, characterized in that it comprises:
  • a clutch wheel comprising an internal toothing,
  • a satellite carrier on which at least one satellite is mounted free to rotate and arranged on the one hand to mesh with the internal toothing and on the other hand to be able to occupy, on demand, at least two positions in which the satellite is respectively in the engaged and disengaged position, namely an engaged position in which one of the clutch wheel and the satellite is kinematically connected to the driven wheel and the other is kinematically connected to the driving wheel, and a disengaged position in which said satellite no longer cooperates with the wheel, driving or driven, engaged with it in the engaged position,
  • means for actuating the carrier arranged to pass it at the request of the one of the two positions disengaged / engaged, and
  • means for positioning the satellite carrier, arranged to position it in said two positions.

Un tel dispositif permet d'entrainer la roue menée toujours dans le même sens de sorte qu'aucun mouvement en arrière de ladite roue menée n'est autorisé.Such a device makes it possible to drive the driven wheel always in the same direction so that no movement behind said driven wheel is allowed.

De manière avantageuse, ledit satellite peut comprendre une première et une seconde roues coaxiales et solidaires en rotation, la première roue étant agencée pour engrener avec la denture intérieure de la roue d'embrayage et la seconde roue étant agencée pour pouvoir engrener avec la roue, menante ou menée, en prise avec le satellite en position embrayée, chacune desdites première et seconde roues étant munie d'une denture définie par un diamètre de tête et un diamètre primitif, le diamètre de tête de la seconde roue étant sensiblement égal au diamètre primitif de la première roue.Advantageously, said satellite may comprise a first and a second coaxial wheel and integral in rotation, the first wheel being arranged to mesh with the internal toothing of the clutch wheel and the second wheel being arranged to be able to mesh with the wheel, driving or driven, engaged with the satellite in the engaged position, each of said first and second wheels being provided with a set of teeth defined by a head diameter and a pitch diameter, the head diameter of the second wheel being substantially equal to the pitch diameter of the first wheel.

Selon les variantes de réalisation, ledit porte-satellite peut être agencé pour porter n satellites, où n est un nombre entier supérieur ou égal à 1, ledit porte-satellite étant disposé sensiblement coaxialement à l'axe de la roue d'embrayage et étant monté mobile en rotation autour de cet axe.According to the embodiments, said carrier may be arranged to carry n satellites, where n is an integer greater than or equal to 1, said carrier being disposed substantially coaxially with the axis of the clutch wheel and being rotatably mounted around this axis.

D'une manière particulièrement avantageuse, ledit porte-satellite peut présenter sur son pourtour 2 x n doigts d'actionnement constituant lesdits moyens d'actionnement.In a particularly advantageous manner, said carrier may have on its periphery 2 x n actuating fingers constituting said actuating means.

Selon une variante de réalisation, la roue d'embrayage peut comprendre une planche circulaire solidaire de l'axe de la roue d'embrayage, surmontée d'une couronne présentant la denture intérieure, et des moyens de liaison agencés pour coopérer avec la roue menante ou menée, lesdits moyens de liaison étant solidaires de l'axe de la roue d'embrayage.According to an alternative embodiment, the clutch wheel may comprise a circular plate secured to the axis of the clutch wheel, surmounted by a ring having the internal toothing, and connecting means arranged to cooperate with the driving or driven wheel, said connecting means being integral with the axis of the clutch wheel.

Selon une autre variante de réalisation, la roue d'embrayage peut être constituée d'une planche circulaire présentant une denture extérieure agencée pour coopérer avec la roue menante ou menée, ladite planche circulaire étant surmontée d'une couronne concentrique, de diamètre inférieur, présentant la denture intérieure, ladite roue d'embrayage étant montée libre en rotation autour de son axe.According to another variant embodiment, the clutch wheel may consist of a circular board having an external toothing arranged to cooperate with the driving or driven wheel, said circular board being surmounted by a concentric ring of smaller diameter, presenting the internal toothing, said clutch wheel being mounted free to rotate about its axis.

D'une manière avantageuse, les moyens de positionnement comprennent un sautoir présentant des moyens de réglage.Advantageously, the positioning means comprise a jumper having adjusting means.

Selon un autre mode de réalisation de l'invention, il est proposé un dispositif d'embrayage, notamment pour un mouvement d'horlogerie, destiné à relier au moins une roue menante à au moins une roue menée, caractérisé en ce qu'il comprend:

  • une roue d'embrayage comprenant une denture intérieure,
  • un porte-satellite sur lequel au moins deux satellites sont montés libres en rotation et agencés d'une part pour coopérer avec ladite denture intérieure et d'autre part pour pouvoir occuper, à la demande, au moins deux positions, à savoir une position embrayée dans laquelle au moins l'un des satellites coopère avec la roue menante et au moins l'un des satellites coopère avec la roue menée, et une position débrayée dans laquelle les satellites ne coopèrent plus avec les roues menante et menée,
  • des moyens d'actionnement du porte-satellite agencés pour le faire passer à la demande de l'une à l'autre des deux positions débrayée/embrayée, et
  • des moyens de positionnement du porte-satellite, agencés pour le positionner dans lesdites deux positions.
According to another embodiment of the invention, there is provided a clutch device, in particular for a clockwork movement, intended to connect at least one driving wheel to at least one driven wheel, characterized in that it comprises :
  • a clutch wheel comprising an internal toothing,
  • a satellite carrier on which at least two satellites are rotatably mounted and arranged on the one hand to cooperate with said internal toothing and on the other hand to occupy, on demand, at least two positions, namely a geared position in which at least one of the satellites cooperates with the driving wheel and at least one of the satellites cooperates with the driven wheel, and a disengaged position in which the satellites no longer cooperate with the driving and driven wheels,
  • means for actuating the carrier arranged to pass it at the request of the one of the two positions disengaged / engaged, and
  • means for positioning the satellite carrier, arranged to position it in said two positions.

D'une manière avantageuse, chaque satellite peut comprendre une première et une seconde roues coaxiales et solidaires en rotation, la première roue étant agencée pour engrener avec la denture intérieure de la roue d'embrayage et la seconde roue étant agencée pour pourvoir engrener avec l'une ou l'autre des roues menante et menée en position embrayée, chacune desdites première et seconde roues étant munie d'une denture définie par un diamètre de tête et un diamètre primitif, le diamètre de tête de la seconde roue étant sensiblement égal au diamètre primitif de la première roue.Advantageously, each satellite may comprise a first and a second coaxial wheel and integral in rotation, the first wheel being arranged to mesh with the internal toothing of the clutch wheel and the second wheel being arranged to mesh with one or the other of the driving and driven wheels in the engaged position, each of said first and second wheels being provided with a set of teeth defined by a head diameter and a pitch diameter, the head diameter of the second wheel being substantially equal to the pitch diameter of the first wheel.

La roue d'embrayage peut être constituée d'une planche circulaire montée mobile en rotation autour de son axe, et surmontée d'une couronne présentant la denture intérieure.The clutch wheel may consist of a circular board mounted to rotate about its axis, and surmounted by a ring having the internal toothing.

L'invention concerne également un mouvement d'horlogerie comprenant au moins une roue menante et au moins une roue menée, caractérisé en ce qu'il comprend un dispositif d'embrayage tel que défini ci-dessus, et des moyens de commande agencés pour enclencher ou déclencher ledit dispositif d'embrayage à la demande par des moyens d'actionnement du porte-satellite.The invention also relates to a watch movement comprising at least one driving wheel and at least one driven wheel, characterized in that it comprises a clutch device as defined above, and control means arranged to engage or triggering said clutch device on demand by means of actuating the planet carrier.

D'une manière avantageuse, les moyens de commande peuvent comprendre au moins un levier de commande agencé pour coopérer avec les moyens d'actionnement du porte-satellite, ledit levier de commande étant relié à au moins un organe de commande, agencé pour actionner à la demande ledit levier de commande.Advantageously, the control means may comprise at least one control lever arranged to cooperate with the means for actuating the planet carrier, said control lever being connected to at least one control member, arranged to operate at the request said control lever.

Selon un mode de réalisation particulièrement préféré, la roue menée du mouvement est une roue de chronographe portant une aiguille pour l'affichage d'un temps chronométré.According to a particularly preferred embodiment, the driven wheel of the movement is a chronograph wheel carrying a needle for displaying a timed time.

Selon différentes variantes, le mouvement selon l'invention peut comprendre au moins deux roues menées agencées de sorte que le dispositif d'embrayage peut occuper plusieurs positions embrayées dans lesquelles il coopère avec l'une et/ou l'autre desdites roues menées.According to different variants, the movement according to the invention may comprise at least two driven wheels arranged so that the clutch device can occupy several engaged positions in which it cooperates with one and / or the other of said driven wheels.

Le mouvement selon l'invention peut par ailleurs comprendre au moins deux roues menantes, agencées de sorte que le dispositif d'embrayage peut occuper plusieurs positions embrayées, dans lesquelles il coopère avec l'une ou l'autre desdites roues menantesThe movement according to the invention may also comprise at least two driving wheels, arranged so that the clutch device can occupy several engaged positions, in which it cooperates with one or other of said driving wheels.

D'une manière avantageuse, le mouvement selon l'invention peut comprendre au moins deux roues menantes et au moins deux roues menées, lesdites roues étant agencées de sorte que le dispositif d'embrayage peut occuper plusieurs positions embrayées, dans lesquelles il coopère avec l'une ou l'autre desdites roues menantes et avec l'une et/ou l'autre desdites roues menées.Advantageously, the movement according to the invention may comprise at least two driving wheels and at least two wheels driven, said wheels being arranged so that the clutch device can occupy several engaged positions, in which it cooperates with one or the other of said driving wheels and with one and / or the other of said driven wheels.

La présente invention concerne également une pièce d'horlogerie comportant un mouvement tel que décrit ci-dessus. Brève description des dessinsThe present invention also relates to a timepiece comprising a movement as described above. Brief description of the drawings

D'autres caractéristiques de la présente invention apparaîtront plus clairement à la lecture de la description qui va suivre, faite en référence aux dessins annexés, dans lesquels:

  • la figure 1 représente une vue en perspective d'un dispositif d'embrayage selon l'invention monté en position embrayée,
  • la figure 2 est une vue en coupe du dispositif d'embrayage selon l'invention monté en position débrayée,
  • la figure 3 est une vue de dessus du dispositif d'embrayage selon l'invention monté en position débrayée,
  • la figure 4 est une vue en coupe du dispositif d'embrayage selon l'invention monté en position embrayée,
  • la figure 5 est une vue de dessus du dispositif d'embrayage selon l'invention monté en position embrayée,
  • la figure 6 représente la trajectoire d'un satellite lors du passage de la position débrayée à la position embrayée lorsque la roue menée est synchronisée avec la roue menante,
  • la figure 7 représente la trajectoire d'un satellite lors du passage de la position débrayée à la position embrayée lorsque la roue menée n'est pas synchronisée avec la roue menante, et
  • les figures 8 et 9 représentent deux autres variantes du dispositif d'embrayage selon l'invention.
Other features of the present invention will emerge more clearly on reading the description which follows, made with reference to the appended drawings, in which:
  • the figure 1 represents a perspective view of a clutch device according to the invention mounted in the engaged position,
  • the figure 2 is a sectional view of the clutch device according to the invention mounted in the disengaged position,
  • the figure 3 is a top view of the clutch device according to the invention mounted in the disengaged position,
  • the figure 4 is a sectional view of the clutch device according to the invention mounted in the engaged position,
  • the figure 5 is a top view of the clutch device according to the invention mounted in the engaged position,
  • the figure 6 represents the trajectory of a satellite during the transition from the disengaged position to the engaged position when the driven wheel is synchronized with the driving wheel,
  • the figure 7 represents the trajectory of a satellite during the transition from the disengaged position to the engaged position when the driven wheel is not synchronized with the driving wheel, and
  • the figures 8 and 9 represent two other variants of the clutch device according to the invention.

Mode(s) de réalisation de l'inventionMode (s) of realization of the invention

En référence aux figures 1 à 5, le dispositif d'embrayage 1 selon l'invention est destiné à relier une roue menante 2 à une roue menée 3. Dans les variantes décrites ici, la roue menante 2 est par exemple la roue des secondes d'un mouvement d'horlogerie, et la roue menée 3 est une roue de chronographe portant une aiguille 3a pour l'affichage du temps chronométré.With reference to Figures 1 to 5 , the clutch device 1 according to the invention is intended to connect a driving wheel 2 to a driven wheel 3. In the variants described here, the driving wheel 2 is for example the seconds wheel of a watch movement, and the driven wheel 3 is a chronograph wheel carrying a needle 3a for displaying the timed time.

Ledit dispositif 1 comprend tout d'abord une roue d'embrayage 4 constituée d'une planche circulaire 5 présentant une denture extérieure 5a, surmontée d'une couronne concentrique 6, de diamètre inférieur, et présentant une denture intérieure 6a. La planche circulaire 5 et la couronne concentrique 6 sont solidaires. La roue d'embrayage 4 est montée libre en rotation autour d'un axe central 7 fixé au bâti 8 du mouvement d'horlogerie, par exemple entre deux platines.Said device 1 comprises firstly a clutch wheel 4 consisting of a circular board 5 having an external toothing 5a, surmounted by a concentric ring 6, of smaller diameter, and having an internal toothing 6a. The circular board 5 and the concentric ring 6 are integral. The clutch wheel 4 is mounted free to rotate about a central axis 7 fixed to the frame 8 of the clockwork movement, for example between two plates.

Selon une autre variante de réalisation non représentée, la roue d'embrayage peut comprendre une planche circulaire solidaire de l'axe de la roue d'embrayage, surmontée d'une couronne présentant la denture intérieure. Dans cette variante, la denture extérieure 5a de la roue d'embrayage 4 précédemment décrite est remplacée par des moyens de liaison solidaires de l'axe de la roue d'embrayage, et agencés pour coopérer avec une roue menante appropriée. Ces moyens de liaison peuvent par exemple comprendre un pignon solidaire de l'axe de la roue d'embrayage.According to another variant embodiment not shown, the clutch wheel may comprise a circular board integral with the axis of the clutch wheel, surmounted by a ring having the internal toothing. In this variant, the outer toothing 5a of the clutch wheel 4 previously described is replaced by connecting means integral with the axis of the clutch wheel, and arranged to cooperate with a suitable driving gear. These connecting means may for example comprise a pinion integral with the axis of the clutch wheel.

Au centre de la couronne 6 est disposé un porte-satellite 10 coaxial à l'axe central 7 de la roue d'embrayage 4. Le porte-satellite 10 est monté mobile en rotation autour de cet axe central 7. Le porte-satellite 10 comprend une base 10a et une partie supérieure 10b, entre lesquelles sont montés libres en rotation trois satellites 11a, 11 b, 11 c autour de trois axes 12 répartis régulièrement autour du porte-satellite 10. Il est bien évident que les satellites peuvent également ne pas être répartis régulièrement.In the center of the ring gear 6 is arranged a planet carrier 10 coaxial with the central axis 7 of the clutch wheel 4. The planet carrier 10 is rotatably mounted around this central axis 7. The planet carrier 10 comprises a base 10a and an upper portion 10b, between which three satellites 11a, 11b, 11c are mounted free to rotate around three axes 12 distributed regularly around the planet carrier 10. It is obvious that the satellites can also not be distributed regularly.

La partie supérieure 10b du porte-satellite 10 est de forme générale circulaire et présente, régulièrement répartis sur son pourtour, six doigts d'actionnement 15 constituant des moyens d'actionnement du porte-satellite 10, et agencés pour le faire passer de l'une à l'autre des deux positions débrayée/embrayée. Pour cela, il est prévu dans le mouvement d'horlogerie des moyens de commande agencés pour enclencher ou déclencher le dispositif d'embrayage 1 à la demande. Selon la variante représentée ici, lesdits moyens de commande comprennent un levier de commande 17 monté mobile sur le support et portant un index 17a mobile autour d'un axe 18. L'extrémité 19 de l'index 17a est agencée pour coopérer successivement avec les doigts d'actionnement 15 du porte-satellite 10 et l'entrainer en rotation de manière à le faire tourner autour de l'axe central 7 de 1/6 de tour à chaque sollicitation du levier de commande, correspondant au passage à l'une ou l'autre des deux positions débrayée/embrayée.The upper part 10b of the planet carrier 10 is generally circular in shape and has, regularly distributed around its periphery, six actuating fingers 15 constituting means for actuating the planet carrier 10, and arranged to make it pass from the one to the other of the two positions disengaged / engaged. For this, it is planned in the movement timepiece control means arranged to engage or trigger the clutch device 1 on demand. According to the variant shown here, said control means comprise a control lever 17 mounted to move on the support and carrying an index 17a movable about an axis 18. The end 19 of the index 17a is arranged to cooperate successively with the actuating fingers 15 of the planet carrier 10 and driving it in rotation so as to rotate it about the central axis 7 by 1/6 of a turn at each loading of the control lever, corresponding to the passage to one either of the two positions disengaged / engaged.

Un ressort de rappel (non représenté) est prévu pour ramener le levier de commande en position initiale, en butée contre un doigt d'actionnement 15, en attente d'une nouvelle sollicitation.A return spring (not shown) is provided to return the control lever to the initial position, abutting against an actuating finger 15, waiting for a new bias.

Un ressort 21 est prévu pour maintenir l'appui de l'index de commande 17a sur le porte-satellite 10.A spring 21 is provided to maintain the support of the control index 17a on the planet carrier 10.

En outre, ledit levier de commande 17 est relié à un organe de commande (non représenté), agencé pour actionner à la demande ledit levier de commande 17. Cet organe de commande est par exemple du type poussoir départ-arrêt, traditionnellement monté sur la carrure de la boîte et utilisé dans les mécanismes de chronographe. Il est bien évident que d'autres moyens de commande peuvent être utilisés.In addition, said control lever 17 is connected to a control member (not shown), arranged to operate on demand said control lever 17. This control member is for example of the push-stop type, traditionally mounted on the middle of the box and used in the chronograph mechanisms. It is obvious that other control means can be used.

Il est également prévu un sautoir de positionnement 22 agencé pour garantir le maintien en position du porte-satellite 10. Le sautoir de positionnement 22 comprend une tête 22a munie de deux plans inclinés, chacun d'eux étant en appui sur l'un de deux doigts de positionnement 15 consécutifs lorsque le porte-satellite 10 occupe l'une ou l'autre des deux positions débrayée/embrayée.There is also provided a positioning jumper 22 arranged to ensure that the satellite holder 10 is held in position. The positioning jumper 22 comprises a head 22a provided with two inclined planes, each of them resting on one of two positioning fingers 15 consecutive when the planet carrier 10 occupies one or the other of the two disengaged / engaged positions.

La position du sautoir de positionnement 22 et du ressort 21 peut être réglée par des moyens de réglage, par exemple des excentriques, non représentés au dessin.The position of the jumper 22 and the spring 21 can be adjusted by adjustment means, for example eccentrics, not shown in the drawing.

Les différents éléments du dispositif d'embrayage 1 sont dimensionnés et disposés de manière à ce que les satellites 11a, 11b, 11c coopèrent avec la denture intérieure 6a de la roue d'embrayage 4. Dans cette variante, les satellites 11a, 11b, 11c doivent, de plus, être suffisamment épais pour pouvoir également coopérer avec la roue menée 3 en position embrayée, une fois le dispositif d'embrayage 1 monté dans un mouvement d'horlogerie. De même, la denture extérieure 5a de la roue d'embrayage 4 est dimensionnée de manière à engrener avec la roue menante 2 une fois le dispositif d'embrayage 1 monté.The different elements of the clutch device 1 are sized and arranged so that the satellites 11a, 11b, 11c cooperate with the internal gear 6a of the clutch wheel 4. In this variant, the satellites 11a, 11b, 11c must, in addition, be thick enough to also cooperate with the driven wheel 3 in the engaged position, once the clutch device 1 mounted in a clockwork movement. Likewise, the external toothing 5a of the clutch wheel 4 is dimensioned so as to mesh with the driving wheel 2 once the clutch device 1 has been mounted.

En référence plus particulièrement aux figures 3 et 5, les satellites 11a, 11b, 11c et les doigts d'actionnement 15 sont disposés autour du porte-satellite 10 de sorte que, une fois le dispositif d'embrayage 1 monté dans un mouvement d'horlogerie, à partir de la position débrayée, la rotation de 1/6 de tour d'un des doigts d'actionnement 15 poussé par l'index 17a du levier de commande 17 entraine la rotation de 1/6 de tour du porte-satellite 10 et de ses satellites 11a, 11b, 11c. Sur la figure 5, c'est le satellite 11 a qui coopère avec la roue menée 3 suite au déplacement du doigt d'actionnement 15a, comme le montre la figure 3.With particular reference to figures 3 and 5 the satellites 11a, 11b, 11c and the actuating fingers 15 are arranged around the planet carrier 10 so that, once the clutch device 1 is mounted in a clockwork movement, from the disengaged position, the 1/6 turn rotation of one of the actuating fingers 15 pushed by the index 17a of the control lever 17 causes the rotation 1/6 turn of the planet carrier 10 and its satellites 11a, 11b, 11c. On the figure 5 it is the satellite 11a which cooperates with the driven wheel 3 following the displacement of the actuating finger 15a, as shown in FIG. figure 3 .

Il est bien évident que le nombre de satellites peut varier et qu'il est possible de prévoir par exemple 1, 2, 3, 4 satellites ou plus.It is obvious that the number of satellites can vary and that it is possible to provide for example 1, 2, 3, 4 satellites or more.

L'Homme du métier sait calculer le nombre et la forme des dents, le nombre et les dimensions des satellites, ainsi que les dimensions des différentes roues, en fonction des dimensions souhaitées pour ce type de mécanisme. Par exemple, on peut prévoir trois satellites, présentant chacun 20 dents, avec une roue menée de 60 dents, une denture intérieure de 60 dents, une denture extérieure de 80 dents et une roue menante de 80 dents.The skilled person can calculate the number and shape of teeth, the number and dimensions of satellites, and the dimensions of the different wheels, depending on the desired dimensions for this type of mechanism. For example, three satellites, each having 20 teeth, can be provided with a driven wheel of 60 teeth, an internal toothing of 60 teeth, an external toothing of 80 teeth and a driving wheel of 80 teeth.

Lorsque le dispositif d'embrayage 1 est mis en place par exemple dans un mécanisme de chronographe d'un mouvement d'horlogerie, il est nécessaire que l'axe central 7, l'axe de rotation 12 de l'un des satellites 11 a, 11b, 11 c et l'axe 23 de la roue menée 3 soient alignés. A cet effet, le sautoir 22 peut être fixé sur le bâti par des moyens permettant de le déplacer légèrement pour modifier sa position et ainsi ajuster cet alignement.When the clutch device 1 is set up for example in a chronograph mechanism of a clockwork movement, it is necessary that the central axis 7, the axis of rotation 12 of one of the satellites 11 has , 11b, 11c and the axis 23 of the driven wheel 3 are aligned. For this purpose, the jumper 22 can be fixed on the frame by means for moving it slightly to change its position and thus adjust this alignment.

Le levier de commande 17 est positionné contre une butée solidaire du bâti de manière à ce que l'index 17a se trouve au voisinage de l'un des doigts d'actionnement 15.The control lever 17 is positioned against a stop secured to the frame so that the index 17a is in the vicinity of one of the actuating fingers 15.

La roue menante 2 entraine la roue d'embrayage 4 par engrènement avec la denture extérieure 5a. Les satellites 11a, 11b, 11c tournent sur eux-mêmes par engrènement avec la denture intérieure 6a de la roue d'embrayage 4.The driving wheel 2 drives the clutch wheel 4 by meshing with the external toothing 5a. The satellites 11a, 11b, 11c rotate on themselves by meshing with the internal toothing 6a of the clutch wheel 4.

Lorsque le chronographe n'est pas utilisé, le dispositif d'embrayage 1 est en position débrayée, conformément aux figures 2 et 3. Dans cette position, aucun des satellites 11a, 11 b, 11 c n'engrène avec la roue menante 3.When the chronograph is not used, the clutch device 1 is in the disengaged position, in accordance with the Figures 2 and 3 . In this position, none of the satellites 11a, 11b, 11c meshes with the driving wheel 3.

Lorsque le chronographe doit être mis en marche, un utilisateur appuie sur l'organe de commande qui actionne le levier de commande 17. Son index 17a appuie sur le doigt d'actionnement 15a pour le déplacer de 1/6 de tour dans le sens antihoraire et ainsi déplacer de 1/6 de tour le porte-satellite 10 dans le sens antihoraire. De la sorte, le satellite 11a vient engrener avec la roue menée 3. Le dispositif d'embrayage 1 est alors en position embrayée conformément aux figures 1, 4 et 5. Le levier de commande 17 reprend ensuite sa position initiale au voisinage du doigt d'actionnement suivant 15b.When the chronograph is to be started, a user presses on the control member which actuates the control lever 17. Its index 17a presses on the actuating finger 15a to move it 1/6 of a turn counterclockwise and thus move the planet carrier 10 1/6 of a turn counterclockwise. In this way, the satellite 11a meshes with the driven wheel 3. The clutch device 1 is then in the engaged position in accordance with the figures 1 , 4 and 5 . The control lever 17 then resumes its initial position in the vicinity of the next actuating finger 15b.

En position embrayée, la roue menée 3 est entrainée par le satellite 11a lui-même entrainé par la denture intérieure 6a de la roue d'embrayage 4.In the engaged position, the driven wheel 3 is driven by the satellite 11a itself driven by the internal toothing 6a of the clutch wheel 4.

Lorsque le chronographe doit être arrêté, l'utilisateur appuie de nouveau sur l'organe de commande qui actionne le levier de commande 17. Son index 17a appuie sur le doigt d'actionnement 15b pour le déplacer de 1/6 de tour dans le sens antihoraire et ainsi déplacer de 1/6 de tour le porte-satellite 10 dans le sens antihoraire de sorte que le satellite 11a se désengage de la roue menée 3. Le dispositif d'embrayage 1 repasse alors en position débrayée. Le levier de commande 17 reprend ensuite sa position initiale au voisinage du doigt d'actionnement suivant 15c. Lors de la rotation du porte-satellite 10, le satellite 11 b s'est à son tour placé à proximité de la roue menée 3 pour être prêt à passer en position embrayée lors du prochain actionnement de levier de commande 17.When the chronograph must be stopped, the user presses again on the control member which actuates the control lever 17. Its index 17a presses the actuating finger 15b to move it 1/6 of a turn in the direction counterclockwise and thus move 1/6 turn the satellite carrier 10 in the counterclockwise direction so that the satellite 11a disengages the driven wheel 3. The clutch device 1 then returns to the disengaged position. The control lever 17 then resumes its initial position in the vicinity of the next actuating finger 15c. During the rotation of the planet carrier 10, the satellite 11b has in turn placed close to the driven wheel 3 to be ready to go into the engaged position at the next actuation of the control lever 17.

Le dispositif d'embrayage selon l'invention est avantageux en ce qu'il permet d'éviter un saut en arrière de la roue menée et donc de l'aiguille portée par cette roue au moment de l'embrayage, que la roue menée soit synchronisée ou non avec la roue menante.The clutch device according to the invention is advantageous in that it makes it possible to avoid a jump back of the driven wheel and therefore of the needle carried by this wheel at the time of clutch, that the driven wheel is synchronized or not with the driving wheel.

En effet, il est représenté sur la figure 6, l'évolution de la trajectoire d'un satellite 11, passant en position embrayée, par rapport à la roue menée 3. Dans cette figure, la roue menée 3 comprend vingt et une dents, de même que la denture intérieure 6a de la roue d'embrayage, alors que le satellite 11 comprend sept dents. La roue menée 3 est synchronisée avec la roue menante et avec la denture intérieure 6a de la roue d'embrayage. Les flèches F1, F2, F3 et F4 illustrent respectivement le mouvement de rotation du porte-satellite, du satellite, de la roue d'embrayage et de la roue menée.Indeed, he is represented on the figure 6 , the evolution of the trajectory of a satellite 11, passing in engaged position, with respect to the driven wheel 3. In this figure, the driven wheel 3 comprises twenty-one teeth, as well as the internal toothing 6a of the wheel clutch, while the satellite 11 comprises seven teeth. The driven wheel 3 is synchronized with the drive wheel and with the internal toothing 6a of the clutch wheel. The arrows F1, F2, F3 and F4 respectively illustrate the rotational movement of the planet carrier, the satellite, the clutch wheel and the driven wheel.

Lorsque le satellite 11 arrive à proximité de la roue menée 3 pour passer en position embrayée, il est animé d'une part d'un mouvement de rotation dans le sens antihoraire du fait du déplacement du porte-satellite et d'autre part d'un mouvement de rotation dans le sens horaire par engrènement avec la denture intérieure 6a de la roue d'embrayage en réaction au déplacement imposé par le porte-satellite. Du fait de ce mouvement composé, la dent 30 du satellite 11, qui est la plus proche de la roue menée 3 coupe le cercle de tête des dents de la roue menée 3 selon un angle voisin de 90°. Il n'y a donc pratiquement pas de mouvement tangentiel relatif de la denture du satellite par rapport à celle de la roue menée. Ainsi, la roue menée 3 ne peut pas être entrainée en arrière au moment de l'embrayage.When the satellite 11 arrives near the driven wheel 3 to move into the engaged position, it is driven on the one hand by a counterclockwise rotation movement due to the displacement of the planet carrier and on the other hand by a rotational movement in the clockwise direction meshing with the internal toothing 6a of the clutch wheel in response to the displacement imposed by the carrier. Due to this compound movement, the tooth 30 of the satellite 11, which is closest to the driven wheel 3 intersects the head circle of the teeth of the driven wheel 3 at an angle close to 90 °. There is therefore virtually no relative tangential movement of the toothing of the satellite relative to that of the driven wheel. Thus, the driven wheel 3 can not be driven back at the time of clutch.

Le principe est le même lorsque la roue menée 3 n'est pas synchronisée avec la roue menante et la denture intérieure 6a de la roue d'embrayage. Plus particulièrement en référence à la figure 7, lorsque le satellite 11 arrive à proximité de la roue menée 3 pour passer en position embrayée, la dent du satellite 11 qui est la plus proche de la roue menée 3, animée du mouvement de rotation composé décrit ci-dessus, va entrer tangentiellement dans la denture de la roue menée et venir appuyer sur la dent de la roue menée 3 en lui imprimant un mouvement de rotation dans le même sens de rotation que celui de la roue menée 3 une fois embrayée. Ainsi, la roue menée 3 ne peut pas être entrainée en arrière au moment de l'embrayage. De ce fait, l'aiguille 3a portée par la roue menée 3, et plus particulièrement l'aiguille de chronographe ne peut pas sauter en arrière.The principle is the same when the driven wheel 3 is not synchronized with the driving wheel and the internal toothing 6a of the clutch wheel. More particularly with reference to the figure 7 when the satellite 11 arrives near the driven wheel 3 to move into the engaged position, the tooth of the satellite 11 which is closest to the driven wheel 3, driven by the compound rotation movement described above, will enter tangentially into the teeth of the driven wheel and press against the tooth of the driven wheel 3 by imparting to it a rotational movement in the same direction of rotation as that of the driven wheel 3 once engaged. Thus, the driven wheel 3 can not not be dragged back at the time of clutch. Therefore, the needle 3a carried by the driven wheel 3, and more particularly the chronograph hand can not jump back.

Le dispositif d'embrayage selon l'invention est également avantageux en ce qu'il permet de supprimer tout réglage de la pénétration des différentes roues nécessaire dans les mécanismes de chronographe traditionnels.The clutch device according to the invention is also advantageous in that it eliminates any adjustment of the penetration of the various wheels required in traditional chronograph mechanisms.

Les conditions de pénétration des dents du satellite dans la roue menée peuvent être ajustées en modifiant la structure du satellite. Un exemple de réalisation est représenté sur la figure 8. Les satellites 11 comprennent chacun respectivement une première roue 40 et une seconde roue 41 coaxiales et solidaires en rotation autour de leur axe respectif 12, la première roue 40 étant agencée pour engrener avec la denture intérieure 6a de la roue d'embrayage 4 et la seconde roue 41 étant agencée pour pouvoir engrener avec la roue menée 3. Les autres éléments du dispositif d'embrayage sont identiques à ceux décrits précédemment.The conditions of penetration of the satellite teeth into the driven wheel can be adjusted by changing the structure of the satellite. An exemplary embodiment is shown on the figure 8 . The satellites 11 each respectively comprise a first wheel 40 and a second wheel 41 coaxial and rotationally fixed about their respective axis 12, the first wheel 40 being arranged to mesh with the internal toothing 6a of the clutch wheel 4 and the second wheel 41 being arranged to be able to mesh with the driven wheel 3. The other elements of the clutch device are identical to those described above.

La première roue 40 et la seconde roue 41 sont chacune munie d'une denture définie par un diamètre de tête et un diamètre primitif, le diamètre de tête de la seconde roue 41 étant sensiblement égal au diamètre primitif de la première roue 40. Cette caractéristique permet de donner aux dents de la seconde roue 41 une trajectoire telle que les têtes de ces dents ont une trajectoire pratiquement radiale lorsqu'elles engrènent avec la roue menée 3, ce qui permet d'obtenir une plus grande précision dans les mouvements lors de la pénétration dans la roue menée.The first wheel 40 and the second wheel 41 are each provided with a set of teeth defined by a head diameter and a pitch diameter, the head diameter of the second wheel 41 being substantially equal to the pitch diameter of the first wheel 40. This characteristic makes it possible to give the teeth of the second wheel 41 a trajectory such that the heads of these teeth have a substantially radial trajectory when they mesh with the driven wheel 3, which makes it possible to obtain greater precision in the movements during the penetration into the driven wheel.

Selon une autre variante illustrée par la figure 9, la position des roues menante et menée ont été inversées. Ainsi, c'est la roue menante 2 qui est agencée pour coopérer avec la seconde roue 41 du satellite 11 lorsque le dispositif est en position embrayée, et c'est la roue menée 3 qui coopère avec la denture extérieure 5a de la roue d'embrayage 4. De ce fait, en position débrayée, seule la roue menante 2 tourne. La première roue 40 du satellite 11 n'est entrainée en rotation qu'en position embrayée, pour entrainer à son tour la roue d'embrayage 4 par engrènement avec la denture intérieure 6a, puis la roue menée 3 par engrènement avec la denture extérieure 5a. Le mécanisme d'actionnement du porte-satellite 10 pour passer de l'une à l'autre des positions embrayée/débrayée au moyen d'un levier de commande est identique à celui décrit ci-dessus.According to another variant illustrated by the figure 9 , the leading and driven wheel positions were reversed. Thus, it is the driving wheel 2 which is arranged to cooperate with the second wheel 41 of the satellite 11 when the device is in the engaged position, and it is the driven wheel 3 which cooperates with the external toothing 5a of the wheel of clutch 4. Therefore, in the disengaged position, only the driving wheel 2 rotates. The first wheel 40 of the satellite 11 is rotated only in the engaged position, to drive in turn the clutch wheel 4 by meshing with the internal toothing 6a, then the driven wheel 3 by meshing with the toothing outside 5a. The mechanism for actuating the planet carrier 10 to move from one to the other of the engaged / disengaged positions by means of a control lever is identical to that described above.

Selon un autre mode de réalisation de la présente invention, non représenté dans les dessins, la roue d'embrayage est constituée d'une planche circulaire montée mobile en rotation autour de son axe, et surmontée d'une couronne présentant la denture intérieure.According to another embodiment of the present invention, not shown in the drawings, the clutch wheel consists of a circular board mounted to rotate about its axis, and surmounted by a ring having the internal toothing.

Le porte-satellite comprend des satellites, et la denture extérieure de la roue d'embrayage est remplacée par la denture du satellite qui, en position embrayée, se trouve au niveau de la roue menante pour coopérer avec elle. Le satellite engrenant alors avec la roue menante entraine la rotation de la roue d'embrayage par engrènement avec la denture intérieure de la roue d'embrayage. Le satellite engrène alors avec la roue menée par engrènement avec la denture intérieure de la roue d'embrayage.The carrier comprises satellites, and the outer toothing of the clutch wheel is replaced by the toothing of the satellite which, in the engaged position, is at the level of the driving wheel to cooperate with it. The satellite meshing with the driving wheel then causes the rotation of the clutch wheel by meshing with the internal toothing of the clutch wheel. The satellite then meshes with the gear wheel meshing with the internal toothing of the clutch wheel.

En position débrayée, les satellites ne coopèrent plus ni avec la roue menante ni avec la roue menée .In the disengaged position, the satellites no longer cooperate with either the driving wheel or the driven wheel.

Les moyens d'actionnement du porte-satellite ainsi que les autres caractéristiques de réalisation sont les mêmes que ceux décrits précédemment. Notamment, chaque satellite peut comprendre une première et une seconde roues coaxiales et solidaires en rotation, la première roue étant agencée pour engrener avec la denture intérieure de la roue d'embrayage et la seconde roue étant agencée pour pouvoir engrener avec l'une ou l'autre des roues menante et menée en position embrayée, chacune desdites première et seconde roues étant munie d'une denture définie par un diamètre de tête et un diamètre primitif, le diamètre de tête de la seconde roue étant sensiblement égal au diamètre primitif de la première roue. Les avantages de cette construction sont les mêmes que ceux décrits précédemment.The means of actuation of the carrier and the other features of embodiment are the same as those described above. In particular, each satellite may comprise a first and a second coaxial wheel and integral in rotation, the first wheel being arranged to mesh with the internal toothing of the clutch wheel and the second wheel being arranged to be able to mesh with one or the other. other wheels driving and driven in the engaged position, each of said first and second wheels being provided with a set of teeth defined by a head diameter and a pitch diameter, the head diameter of the second wheel being substantially equal to the pitch diameter of the first first wheel. The advantages of this construction are the same as those described above.

Selon d'autres variantes de l'invention non représentées, il est possible de prévoir plusieurs roues menées et/ou plusieurs roues menantes. Par exemple il est possible de prévoir autant de roues menées à embrayer que de satellites, ces différentes roues menées pouvant appartenir à différents mécanismes à embrayer.According to other variants of the invention not shown, it is possible to provide several driven wheels and / or several driving wheels. For example it is possible to provide as many wheels driven to engage than of satellites, these different wheels being able to belong to different mechanisms to engage.

De même, à partir notamment de la variante représentée sur la figure 9 ou dudit autre mode de réalisation décrit ci-dessus, il est possible de prévoir plusieurs roues menantes animées de vitesses différentes, à embrayer avec le dispositif de l'invention. Cette variante permet de donner à la roue menée différentes vitesses de rotation, en fonction de la roue menante embrayée.Likewise, starting from the variant represented on the figure 9 or said other embodiment described above, it is possible to provide several driving wheels animated different speeds, to engage with the device of the invention. This variant makes it possible to give the driven wheel different speeds of rotation, depending on the driving gear engaged.

Il est bien évident que ces différentes variantes peuvent être combinées entre elles.It is obvious that these different variants can be combined with each other.

Le dispositif d'embrayage selon l'invention est décrit ici comme dispositif d'embrayage dans un mécanisme de chronographe, mais il est bien évident qu'il peut être utilisé dans toute application mécanique nécessitant la mise en liaison à la demande d'une roue menante avec une roue menée.The clutch device according to the invention is described here as a clutch device in a chronograph mechanism, but it is obvious that it can be used in any mechanical application requiring the connection to the request of a wheel driving with a driven wheel.

Claims (17)

  1. Clutch device (1), in particular for a timepiece movement, intended to connect at least one driving wheel (2) to at least one driven wheel (3), characterised in that it comprises:
    - a clutch wheel (4) comprising inner toothing (6a),
    - a planet carrier (10) on which at least one planet gear (11) is mounted so as to be freely rotatable and is arranged to mesh with the inner toothing (6a) and to be able to assume, upon request, at least two positions in which the planet gear (11) is in an engaged and a disengaged position respectively, i.e., an engaged position in which one ofthe clutch wheel (4) and the planet gear (11) is kinematically connected to the driven wheel (3) and the other one is kinematically connected to the driving wheel (2), and a disengaged position in which said planet gear (11) no longer co-operates with the wheel - the driving wheel (2) or driven wheel (3) - engaged therewith in the engaged position,
    - means (15) for actuating the planet carrier (10), arranged to transfer it, upon request, from one of the two disengaged/engaged positions to the other, and
    - means (22) for positioning the planet carrier (10), arranged to position it in said two positions.
  2. Device as claimed in Claim 1, characterised in that said planet gear (11) comprises first (40) and second (41) coaxial wheels fixedly attached in rotation, the first wheel (40) being arranged to mesh with the inner toothing (6a) ofthe clutch wheel (4) and the second wheel (41) being arranged to be able to mesh with the wheel - the driving wheel (2) or driven wheel (3) - engaged with the planet gear (11) in the engaged position, each of said first (40) and second (41) wheels being provided with toothing defined by an outside diameter and a pitch diameter, the outside diameter of the second wheel (41) being substantially equal to the pitch diameter of the first wheel (40).
  3. Device as claimed in Claim 1 or 2, characterised in that said planet carrier (10) is arranged to carry n planet gears (11a, 11b, 11c), where n is an integer greater than or equal to 1, said planet gear (10) being disposed substantially coaxially with respect to the axle (7) of the clutch wheel (4) and being mounted so as to be rotatably moveable about this axle (7).
  4. Device as claimed in Claim 3, characterised in that said planet carrier (10) has on its periphery 2 x n actuating fingers (15a, 15b, 15c) forming said actuating means (15).
  5. Device as claimed in any one of Claims 1 to 4, characterised in that the clutch wheel comprises a circular plate fixedly attached to the axle of the clutch wheel and surmounted by a crown having the inner toothing, and linking means arranged to co-operate with the driving wheel or driven wheel, said linking means being fixedly attached to the axle of the clutch wheel.
  6. Device as claimed in any one of Claims 1 to 4, characterised in that the clutch wheel (4) is formed by a circular plate (5) having outer toothing (5a) arranged to co-operate with the driving wheel or the driven wheel, said circular plate (5) being surmounted by a concentric crown (6), with a smaller diameter, having the inner toothing (6a), said clutch wheel (4) being mounted so as to be freely rotatable about its axle (7).
  7. Device as claimed in any one of the preceding claims, characterised in that the positioning means comprise a jumper spring (22) having adjusting means.
  8. Clutch device, in particular for a timepiece movement, intended to connect at least one driving wheel to at least one driven wheel, characterised in that it comprises:
    - a clutch wheel comprising inner toothing,
    - a planet carrier on which at least two planet gears are mounted so as to be freely rotatable and are arranged to co-operate with said inner toothing and to be able to assume, upon request, at least two positions, i.e., an engaged position in which at least one of the planet gears co-operates with the driving wheel and at least one of the planet gears co-operates with the driven wheel, and a disengaged position in which the planet gears no longer co-operate with the driving and driven wheels,
    - means for actuating the planet carrier, arranged to transfer it, upon request, from one of the two disengaged/engaged positions to the other, and
    - means for positioning the planet carrier, arranged to position it in said two positions.
  9. Device as claimed in Claim 8, characterised in that each planet gear comprises first and second coaxial wheels fixedly attached in rotation, the first wheel being arranged to mesh with the inner toothing ofthe clutch wheel and the second wheel being arranged to be able to mesh with one or the other of the driving and driven wheels in the engaged position, each of said first and second wheels being provided with toothing defined by an outside diameter and a pitch diameter, the outside diameter of the second wheel being substantially equal to the pitch diameter of the first wheel.
  10. Device as claimed in Claim 8 or 9, characterised in that the clutch wheel is formed by a circular plate mounted so as to be rotatably moveable about its axle, and surmounted by a crown having the inner toothing.
  11. Timepiece movement comprising at least one driving wheel (2) and at least one driven wheel (3), characterised in that it comprises a clutch device (1) as claimed in any one of the preceding claims, and control means (17) arranged to engage or disengage said clutch device (1) upon request by means (15) for actuating the planet carrier.
  12. Movement as claimed in Claim 11, characterised in that the control means comprise at least one control lever (17) arranged to co-operate with the means (15) for actuating the planet carrier (10), said control lever (17) being connected to at least one control member arranged to actuate said control lever (17) upon request.
  13. Movement as claimed in any one of Claims 11 or 12, characterised in that the driven wheel (3) is a chronograph wheel having a hand (3a) for displaying the measured time.
  14. Movement as claimed in any one of Claims 11 to 13, characterised in that it comprises at least two driven wheels arranged such that the clutch device can assume several engaged positions in which it co-operates with one and/or the other of said driven wheels.
  15. Movement as claimed in any one of Claims 11 to 14, characterised in that it comprises at least two driving wheels arranged such that the clutch device can assume several engaged positions in which it co-operates with one or the other of said driving wheels.
  16. Movement as claimed in any one of Claims 11 to 15, characterised in that it comprises at least two driving wheels and at least two driven wheels, said wheels being arranged such that the clutch device can assume several engaged positions in which it co-operates with one or the other of said driving wheels and with one and/or the other of said driven wheels.
  17. Timepiece comprising a movement as claimed in any one of Claims 11 to 16.
EP20080154999 2008-04-23 2008-04-23 Clutch device Not-in-force EP2112564B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20080154999 EP2112564B1 (en) 2008-04-23 2008-04-23 Clutch device
ES08154999T ES2401928T3 (en) 2008-04-23 2008-04-23 Clutch device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20080154999 EP2112564B1 (en) 2008-04-23 2008-04-23 Clutch device

Publications (2)

Publication Number Publication Date
EP2112564A1 EP2112564A1 (en) 2009-10-28
EP2112564B1 true EP2112564B1 (en) 2012-12-26

Family

ID=40140072

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20080154999 Not-in-force EP2112564B1 (en) 2008-04-23 2008-04-23 Clutch device

Country Status (2)

Country Link
EP (1) EP2112564B1 (en)
ES (1) ES2401928T3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2444861B1 (en) * 2010-10-22 2013-05-01 Audemars Piguet (Renaud et Papi) SA Function selector
CH710362A1 (en) 2014-11-13 2016-05-13 Société Anonyme De La Mft D'horlogerie Audemars Piguet & Cie Device to split planetary gear for a timepiece.
EP3032358B1 (en) 2014-12-12 2020-10-07 Richemont International S.A. Chronograph mechanism for a clock movement

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB534672A (en) * 1939-08-22 1941-03-13 Sonceboz Sa Improvements in or relating to time piece with chronograph

Also Published As

Publication number Publication date
ES2401928T3 (en) 2013-04-25
EP2112564A1 (en) 2009-10-28

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