EP2957964B1 - Dispositif d'embrayage basculant pour pièce d'horlogerie - Google Patents

Dispositif d'embrayage basculant pour pièce d'horlogerie Download PDF

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Publication number
EP2957964B1
EP2957964B1 EP15171351.8A EP15171351A EP2957964B1 EP 2957964 B1 EP2957964 B1 EP 2957964B1 EP 15171351 A EP15171351 A EP 15171351A EP 2957964 B1 EP2957964 B1 EP 2957964B1
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EP
European Patent Office
Prior art keywords
wheel
coupling
rotation
clutch
axis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP15171351.8A
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German (de)
English (en)
French (fr)
Other versions
EP2957964A3 (fr
EP2957964A2 (fr
Inventor
Marc-Olivier Pages
Giulio Papi
Lauren Musitelli
Johan Montet
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.)
Manufacture dHorlogerie Audemars Piguet SA
Original Assignee
Manufacture dHorlogerie Audemars Piguet SA
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Publication of EP2957964A2 publication Critical patent/EP2957964A2/fr
Publication of EP2957964A3 publication Critical patent/EP2957964A3/fr
Application granted granted Critical
Publication of EP2957964B1 publication Critical patent/EP2957964B1/fr
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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B27/00—Mechanical devices for setting the time indicating means
    • G04B27/02—Mechanical devices for setting the time indicating means by making use of the winding means
    • G04B27/04—Mechanical devices for setting the time indicating means by making use of the winding means with clutch wheel
    • 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
    • G04B27/00—Mechanical devices for setting the time indicating means
    • G04B27/02—Mechanical devices for setting the time indicating means by making use of the winding means
    • G04B27/023—Mechanical devices for setting the time indicating means by making use of the winding means changing of the winding position to the setting position and vice versa is done with an independant part of the winding or setting mechanism
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B27/00—Mechanical devices for setting the time indicating means
    • G04B27/02—Mechanical devices for setting the time indicating means by making use of the winding means
    • G04B27/04—Mechanical devices for setting the time indicating means by making use of the winding means with clutch wheel
    • G04B27/045—Changing the winding position to the setting position and vice versa is done with an independant part of the winding or setting mechanism
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B27/00—Mechanical devices for setting the time indicating means
    • G04B27/02—Mechanical devices for setting the time indicating means by making use of the winding means
    • G04B27/06—Mechanical devices for setting the time indicating means by making use of the winding means with rocking bar
    • 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
    • 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
    • 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
    • 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
    • G04F7/0838—Watches or clocks with stop devices, e.g. chronograph with couplings between the chronograph mechanism and the base movement involving a tilting movement

Definitions

  • the present invention relates to a clutch device for timepieces, especially for time-setting devices or chronograph watches, the device comprising an input wheel, a clutch wheel meshing with the wheel of a clutch. inlet, and at least a first output wheel, said clutch wheel being arranged substantially coplanar with the plane of rotation of the input wheel and the first output wheel as well as arranged so that it is adapted to tilt relative to said plane of rotation so as to occupy at least a first clutch position in which the clutch wheel meshes with the first output wheel and a second clutch position in which the wheel of the clutch is decoupled from the first output wheel, the device comprising a movable element for controlling the change of position between the first - and the second position of the clutch wheel .
  • the invention relates to timepieces having a mechanical movement, including mechanical wristwatches.
  • This type of timepiece is often equipped with several functions; particularly with regard to the parts of Haute Horlogerie, and thus regularly has a control device having three positions, corresponding for example to the reassembly of the watch, to the rapid correction of the calendar, and to the setting of the time, thus requiring a clutch to assign the various functions to the corresponding positions of the control device.
  • the conventional clutch used for this case consists of a correction lever controlled by a control rod and movable by pivoting a short distance which is equivalent to a translation.
  • the scale includes a reference embedded clutch adapted to mesh with, respectively to be disengaged from a corrector wheel, depending on the position of the rocker.
  • the clutch by translation has the disadvantage that it is possible that it causes, in certain circumstances, parasitic rotation of the corrector wheel related to the movement of the onboard gear along the circumference of the corrector wheel. This can for example produce a slight jump, forwards or backwards, of the minute hand when the user of the timepiece pushes the control rod after having made the time setting, which obviously constitutes a disadvantage.
  • this type of clutch takes up a lot of room and is not suitable for use in extra-flat movements.
  • An additional function that includes many timepieces consists of a chronograph mechanism. This function also requires a clutch, the conventional clutch mechanism used for this application is also based on a movement equivalent to a translation of an onboard clutch return.
  • the translation of the onboard clutch return generates the engagement, respectively the stopping of the measured time measurement by establishing, respectively by interrupting the kinematic connection between the finishing gear of the movement of the timepiece and the chronograph wheel.
  • this causes problems because, as in the case described above of the time setting, the translation of the onboard clutch return can, under certain circumstances, cause parasitic rotation of the chronograph wheel and, by therefore, a jump forward of the chronograph hand. If this has no influence on the reading of the timed time, because the gear set is overtaken later, it is an aesthetic problem at the time of the triggering of the chronograph that should be eliminated.
  • EP 2 060 958 discloses, in the context of a clutch for a chronograph mechanism, a toothed wheel having a toothing of a specific shape, including having teeth having a foot and a head of particular shape.
  • the axis of the clutch return is placed, contrary to the arrangement of a conventional chronograph, on the right between the axes of the field wheel and the chronograph wheel and the shape of the clutch rocker , arranged so as to be able to bring said gear in gear with the chronograph wheel or away, allows to obtain a translation of the clutch return during its movement between its two positions disengaged and engaged oriented almost perpendicular to the circumference of the chronograph wheel.
  • the clutch return does not translate along the circumference of the chronograph wheel, which limits the spurious rotation mentioned above.
  • This arrangement requires complicated teeth on the clutch return and increases the cost of production.
  • the space occupied by this mechanism remains considerable and the mechanism requires a specific arrangement of its parts relative to each other, which limits its use both for other functions than a chronograph that in extra movements -Dishes.
  • the patent US 6,773,157 discloses a time correction device comprising a winding rod cooperating, on the one hand, in a conventional manner with a minute and hour handwheel, by means of a first correction wheel.
  • the device comprises a second correction wheel which is mounted on a fixed axis having partially the shape of a cone so that the second wheel of correction may be inclined around this axis, depending on the position of a control spring controlled by the rod and cooperating with another spring exerting a prestressing force on the second correction wheel.
  • the second correction wheel meshes with or not with a part of said correction train, and when it is in meshing position, the winding rod does not mesh with said first correction wheel.
  • this device can, in principle, be used for several applications such as the quick adjustment of the hour hand independently of the minute hand or the correction of the date, the mechanism is even more bulky than a conventional clutch and does not lend itself to integration in a flat motion.
  • the use of a fixed frustoconical axis of rotation in combination with a control of the inclination of the clutch gear mounted on this axis by several springs does not seem to ensure reliable operation.
  • the time correction device according to DD 127,363 comprises a clutch gear which, under the influence of the winding stem, can tilt about its axis in order to be in contact with either the winding wheel or with the time setting wheel. Because the clutch gear is mounted on a pivoting lever in a cage, it is oriented substantially vertically with respect to the winding wheel and the time setting wheel, which directly implies a large space requirement at height. . The mechanism is not suitable for integration in extra-flat movements.
  • this clutch or the corresponding correction device can only control two functions and is therefore not suitable for high-end timepieces with several functions.
  • the document US 413,654 describes a winding and time-setting system that includes a clutch wheel that can tilt around a fixed axis of rotation.
  • This clutch wheel makes it possible to transmit the movement of the winding rod either to the winding wheel or to a wheel of the time-setting train, this according to its inclination which is controlled by the winding rod. using a ring concentrically mounted relative to the clutch wheel and having a lip cooperating with the rod.
  • this device can control only two functions and its operation does not seem to be reliable since the inclined position of the clutch wheel is not obtained, following the release of the clutch wheel, by constraint but by the action of the gravitational force, which changes according to the orientation of the corresponding timepiece.
  • the document FR 436,356 proposes a device having a double tilting pinion fixed to a tilting axis perpendicular to the plane of rotation of the input and output wheels, located in two different planes, the inclination of the pin being caused by the movement of a controlled spring by a moving part.
  • the device is obviously not suitable for use in an ultra-flat movement and its control is apparently not very reliable.
  • the document CH 2,547 also discloses a double tilting pinion fixed to a tilting axis perpendicular to the parallel remote rotation planes of the input and output wheels, the ends of the tilting axis being fixed in a fork rotatably housed and perpendicular to said axis.
  • EP 0 261 243 and EP 1 288 743 disclose a double rocking pinion fixed to a tilting axis perpendicular to the remote planes of rotation of the input and output wheels, the inclination of the axis being in both cases caused by the displacement of a movable control member.
  • the latter is door, according to EP 0 261 243 , one end of the tilting axis is constrained, according to EP 1 288 743 this end, mounted otherwise freely, by pressure.
  • the document EP 0 261 243 further specifying a condition on the minimum length of the tilting axis to allow proper operation of the clutch. These devices can also control only one function that can be engaged or triggered.
  • the purpose of the present invention is therefore to overcome, at least partially, the disadvantages of known devices and to make a clutch device for timepieces which has a small footprint, in particular to allow integration into movements extra-flat, and which limits the problems of parasitic rotation at the time of clutching.
  • the device should be suitable for use in the context of several horological applications, in particular for time-setting devices and chronograph watches, and have a simple and robust structure, in addition to guarantee a cost reasonable production, as well as reliable operation.
  • the present invention provides a clutch device of the aforementioned type which is distinguished by the features set forth in claim 1.
  • the clutch wheel of the device according to the present invention comprises an axis of rotation capable of being inclined relative to the normal to said plane of rotation of the input wheel and the first output wheel being pivotably mounted at each of its ends, at least one end of said axis of rotation being mounted on said movable element, and the ratio between the diameter of the clutch wheel and the height of the axis of rotation between its intersection with said plane of rotation and the end mounted on the movable element being greater than 1.5: 1.
  • the axis of rotation of the clutch wheel is forced in two places while being tilting.
  • it is possible to arrange the clutch wheel tilting manner allowing a tilting clutch that eliminates spurious rotation of the output wheel grafted conventional mechanisms, since the clutch wheel engages in the output wheel almost vertically and not radially.
  • This is completed while ensuring a construction using only a very limited number of parts and, above all, by decreasing the height of the device, since the clutch or disengagement is achieved mainly by providing the clutch wheel. a diameter large enough to allow its disengagement of at least the first output wheel.
  • the device is very compact, so as to lend itself to integration in extra-flat movements, and has a simple and safe operation.
  • the other end of said axis of rotation is constrained by a fixed part of the frame of the timepiece, which reinforces the aforementioned advantages.
  • the invention also relates to a time setting device and a chronograph mechanism comprising such a clutch device.
  • the latter is adapted to be used in several horological applications and therefore has great flexibility both in its layout and in its use.
  • the present invention relates to a clutch device intended to be integrated in a timepiece, preferably in a wristwatch having a mechanical movement.
  • a clutch device intended to be integrated in a timepiece, preferably in a wristwatch having a mechanical movement.
  • timepiece preferably in a wristwatch having a mechanical movement.
  • a clutch device can be integrated with modules of such a timepiece, such as a time-setting device, a chronograph mechanism, a split-seconds mechanism, or other devices. mechanisms that are likely to be equipped with a clutch device according to the present invention.
  • the Figures 1a, 1b, and 1c are schematic views from above, from below, respectively in perspective of such a device for setting the time, when the clutch device according to the present invention integrated in this time setting device is in a first clutch position
  • the Figures 2a, 2b, and 2c show the time setting device when the clutch device is in a second clutch position.
  • the setting device 10 comprises a winding stem 10.1.
  • the winding stem 10.1 is able to occupy at least three axial control positions.
  • a winding pinion 10.2 whose axial position relative to the frame of the timepiece is fixed, is mounted freely rotatably around the winding stem 10.1 and a sliding pinion 10.3 is slidably mounted on the stem of the watch.
  • the winding pinion 10.2 comprises a radial toothing meshing with a gear kinematically connected to the barrel of the movement of the corresponding timepiece and a Breguet toothing oriented towards the sliding pinion 10.3, while the latter comprises a Breguet toothing which is oriented in the direction of the winding pinion 10.2 and a ring gear which is oriented in the opposite direction.
  • the sliding pinion 10.3 is rotatably connected to the winding stem 10.1, for example by a section of specific shape on a part of the length of the rod 10.1 and a correspondingly shaped opening in the sliding pinion 10.3, and adapted to mesh with said winding pinion 10.2 when the winding stem 10.1 is in its first axial control position, which normally corresponds to the winding position of the barrel of the corresponding timepiece.
  • the time setting device 10 also comprises a correction feedback 1.1 which can be fixed on a bridge of the corresponding timepiece and forms an input wheel. This correction return 1.1 is capable of meshing with said ring gear of the sliding pinion 10.3 when the winding stem 10.1 is in its second - or third axial control position.
  • the time setting device 10 comprises a pull tab 10.4 controlled by the winding stem 10.1 and for moving, by means of a control lever 10.5 also called sliding pinion, the sliding pinion 10.3 between a first winding position in which the sliding pinion 10.3 meshes with said winding pinion 10.2, when the winding stem 10.1 is in its first axial control position, and a second correction position in which the ring gear of the sliding pinion 10.3 meshes with said correction return 1.1, when the winding stem 10.1 is in its second - or third axial control position.
  • a control lever 10.5 also called sliding pinion
  • the pull tab 10.4 is pivotable about a pull rod axis 10.4.3 and cooperates with one of its ends with the winding stem 10.1, for example by being engaged in a groove of the winding stem 10.1, while the other of its ends includes a tip 10.4.1 and a pin 10.4.2.
  • the point 10.4.1 of the pull tab 10.4 cooperates with a side portion 10.5.1 of said control lever 10.5 which is pivotably mounted about a pivot axis 10.5.2.
  • the sliding pinion 10.3 When the tip 10.4.1 of the pull tab 10.4 is positioned in front of a recess on the lateral portion 10.5.1 of the control lever 10.5, the sliding pinion 10.3 is in its first winding position, not illustrated in the figures, respectively the rod winder 10.1 in its first axial control position, in which the sliding pinion 10.3 meshes with said winding pinion 10.2 to allow the winding of the timepiece cylinder.
  • the sliding pinion 10.3 When the tip 10.4.1 of the pull tab 10.4 is positioned outside said hollow, on a portion having a substantially circular front face on the lateral portion 10.5.1 of the control lever 10.5, the sliding pinion 10.3 is in its second correcting position which is illustrated in Figures 1a to 1c and 2a to 2c , in which the sliding pinion 10.3 meshes with the ring gear of said correction ring 1.1 acting as an input wheel.
  • This may correspond either to the second axial control position of the winding stem 10.1 or to the third axial control position of the winding stem 10.1 to allow the corresponding functions to be performed.
  • the device further comprises a first correction wheel 1.3 forming a first output wheel which is adapted to be in kinematic connection with said correction return 1.1 when the winding stem 10.1 is in its second axial control position, and a second correction wheel 1.4 forming a second output wheel which is adapted to be in kinematic connection with the correction return 1.1 when the winding stem is in its third axial control position.
  • the second correction wheel 1.4 is arranged on the same axis as the first correction wheel 1.3, but the two wheels 1.3, 1.4 are not integral with each other so that each can rotate independently.
  • the functions assigned to the first - 1.3 and second correction wheel 1.4 can in principle be chosen freely, and may for example consist of the correction of the calendar and the time setting, or vice versa.
  • the time setting device 10 differs from the devices of the prior art further in that it comprises a clutch device 1 with a specific arrangement as described below.
  • this clutch device 1 comprises an input wheel 1.1, corresponding to the abovementioned correction reference, a clutch wheel 1.2 normally meshing permanently with this input wheel 1.1, and at least a first wheel output 1.3, corresponding to the first correction wheel mentioned above.
  • Said clutch wheel 1.2 is disposed substantially coplanar with respect to the plane of rotation p of the input wheel 1.1 and the first output wheel 1.3, the latter two being effectively located in a common plane of rotation.
  • the clutch wheel 1.2 is arranged so that it is adapted to tilt relative to said plane of rotation so as to occupy at least a first clutch position in which the clutch wheel 1.2 engages with the first output wheel 1.3 and a second clutch position in which the clutch wheel 1.2 is decoupled from the first output wheel 1.3.
  • the centers of the input wheel 1.1, the clutch wheel 1.2, and the first output wheel 1.3 are preferably aligned, but they can also form a different angle, including a right angle.
  • said clutch wheel 1.2 comprises, unlike the devices of the prior art, an axis of rotation 1.2.1 adapted to be inclined relative to the normal to said plane of rotation p of the input wheel 1.1 and of the first output wheel 1.3, thanks to a specific arrangement.
  • the inclination of said axis of rotation 1.2.1 of the clutch wheel 1.2 is possible because this axis 1.2.1 is pivotally mounted at each of its ends 1.2.2, 1.2.3, at least of which an end 1.2.2 is mounted on a movable element 1.6.
  • This movable element 1.6 makes it possible to control the change of position between the first - and the second clutch position of the clutch wheel 1.2, thus to effect the clutch or disengagement between the clutch wheel 1.2 and the clutch wheel.
  • first output wheel 1.3 is
  • the low height of the clutch device so mainly the low effective height h of the axis 1.2.1 of the clutch wheel 1.2 relative to the diameter of this wheel 1.2 allows a clutch, respectively disengagement between the wheel Clutch 1.2 and the first output wheel 1.3 in a very small space optimized for the needs of an ultra-thin watch movement.
  • the clutch of the clutch wheel 1.2 and the first output wheel 1.3 is made by tilting, that is to say by successive engagement of their respective teeth in a direction oriented substantially perpendicular to the plane of rotation p and not radially, it may be that a tooth of the clutch wheel 1.2 falls from above on a tooth of the first output wheel 1.3.
  • the movable element 1.6 preferably comprises and as visible for example in the figure 1a , an elastic arm 1.6.1 to absorb the corresponding offset required at the clutch wheel 1.2.
  • the movable member 1.6 which is pivotably mounted about a pivot axis 1.6.4, also comprises a 1.6.3 guiding means limiting the movement of said movable member 1.6 and defining its maximum tilting in the first - and the second clutch position, respectively in general in the extreme positions of the displacement of the clutch wheel 1.2. Simultaneously, this defines the positions of maximum inclination of the axis of rotation 1.2.1 of the clutch wheel 1.2.
  • the guiding means 1.6.3 may be formed by a oblong opening in cooperation with a pin, as is illustrated by way of example to the Figures 1a to 1c , by two horns in cooperation with a pin, a protruding part in cooperation with two pins, or by other equivalent means.
  • the input wheel 1.1 of a clutch device 1 preferably has a greater thickness, substantially equivalent to a multiple of the thickness of said at least one first output wheel 1.3. , as illustrated in addition to figures 1d and 2d .
  • the clutch device 1 may comprise, in general, at least one second output wheel 1.4 such as the second correction wheel of the time-setting device 10 mentioned above, or even three or more output wheels, if the clutch wheel 1.2, respectively its axis of rotation 1.2.1 and the movable member 1.6, have three or more tilting positions, respectively three or more tilting positions, stable.
  • the clutch wheel 1.2 respectively its axis of rotation 1.2.1 and the movable member 1.6
  • said clutch lever 1.6 comprises a control portion 1.6.2 adapted to cooperate with the pin 10.4.2. on the pull tab 10.4, against which the control part 1.6.2 is prestressed for example by a preloading spring, so that the clutch rocker 1.6 can occupy a first - and a second tilting position in which the wheel clutch 1.2 is in its first - respectively its second clutch position.
  • said control portion 1.6.2 comprises a first circular arc section 1.6.2.1 and a second offset circular arc section 1.6.2.2 which correspond to the first and second pivoting position of the clutch rocker. 1.6.
  • control part 1.6.2 can also be formed by a correspondingly shaped opening in the clutch lever 1.6. It is also possible to invert the constellation, that is to say to provide a pin on the clutch rocker 1.6 and a corresponding control part on the zipper 10.4.
  • the first correction wheel 1.3 preferably consists of the fast correction wheel of the date, but it can also be act on the fast time correction wheel, or another similar correction wheel.
  • the second correction wheel 1.4 is preferably the normal setting wheel, but also in this case it may be another wheel.
  • the point 10.4.1 of the pull tab 10.4 enters the recess on the lateral part 10.5.1 of the control lever 10.5 and the sliding pinion 10.3 is in its first winding position, in which the Breguet toothing of the sliding pinion 10.3 meshes with the Breguet toothing of the winding pinion 10.2, being disengaged from the correction return 1.1, to allow the winding of the barrel of the corresponding timepiece.
  • the clutch wheel 1.2 meshes with the first output wheel 1.3 which is in the example above the fast correction wheel of the date, as illustrated in FIG. figure 1d , and is disengaged from the second output wheel 1.4 which is in the example above the time setting wheel.
  • this has no consequence for these wheels and the gear trains kinematically with them, since the sliding pinion 10.3, respectively the winding stem 10.1 and therefore the crown is not in kinematic connection with the correction return 1.1.
  • the pin 10.4.2 on the zipper 10.4 slides along the first circular section 1.6.2.1 of the control part 1.6.2 of the clutch rocker 1.6, but remains - as in the position thrust of the crown - on this first section 1.6.2.1, so that the clutch wheel 1.2 always meshes with the first output wheel 1.3, the fast correction wheel of the date, and is disengaged from the second output wheel 1.4 , the time-setting wheel, as illustrated in figure 1d .
  • the user can therefore perform the quick correction of the date, or any other function assigned to the first output wheel 1.3.
  • the clutch wheel 1.2 of a clutch device 1 has an axis of rotation 1.2.1 tilting relative to the normal plane of rotation p of the input wheel 1.1 and the first - 1.3, respectively of the second output wheel 1.4.
  • the inclination of this axis of rotation 1.2.1 of the clutch wheel 1: 2 is achieved by making the ends 1.2.2, 1.2.3 of the axis 1.2.1 pivotable and positioning at least one end 1.2 .2 of this axis 1.2.1 on said movable element 1.6 which thus makes it possible to control the change of position between the clutching positions of the clutch wheel 1.2, and thus to effect the clutching and disengagement of the corresponding wheels.
  • the other end 1.2.3 of said axis of rotation 1.2.1 is normally constrained by a fixed part 1.5 of the frame of the timepiece, for example by a ball-shaped end of a tenon 1.5 attached to a bridge of the timepiece, as also visible to figures 1d and 2d . It is however theoretically possible to also place this end 1.2.3 of said axis of rotation 1.2.1 on a second movable element, in particular a movable element making an equivalent movement in the opposite direction of the movement of the movable element 1.6, in order to decrease the change of position of the center of the clutch wheel 1.2. Since this change can be absorbed by the clearance between the teeth of the corresponding wheels, this is not normally necessary.
  • the first end 1.2.2 of the axis of rotation 1.2.1 of the clutch wheel 1.2 oriented towards the movable element 1.6 is equipped with a rounded portion, similar to a ball joint, which is housed in a housing 1.6 .5 corresponding provided on the movable element 1.6.
  • said ball-shaped end of stud 1.5 is housed in a cavity 1.2.4 formed in the clutch wheel 1.2 on its side facing said stud 1.5, this cavity surrounding the tilting point b of the wheel of FIG. clutch 1.2.
  • said tilting point b of the axis 1.2.1 of the clutch wheel 1.2 is advantageously located in the common plane of rotation p of the input wheel 1.1 and the first wheel 1.3 or even at least close to the plane of rotation p quasi-common of the input wheel 1.1, the first output wheel 1.3, and the second output wheel 1.4, in which plane is also the wheel clutch 1.2, in case there are several output wheels 1.3, 1.4.
  • the tilting point b is formed by the intersection of the axis of rotation 1.2.1 and the tilting axis of the clutch wheel 1.2, and its positioning in said plane of rotation p allows an arrangement particularly favorable for the integration of a clutch device in an ultra-thin clock movement.
  • the cooperation between said rounded portion on the end 1.2.2 of the axis of rotation 1.2.1 and said housing on the movable element 1.6, as well as the cooperation between the ball-shaped end of the post 1.5 and the cavity 1.2.4 in the clutch wheel 1.2 therefore each perform a joint, similar to the hip joint, comprising each a male part and a female part.
  • the first end 1.2.2 of the axis of rotation 1.2.1 of the clutch wheel 1.2 can be equipped with a straight part which is housed in a corresponding housing provided on the movable element 1.6 in which, preferably, a stone having an aperture of a diameter slightly larger than said straight portion is driven to reduce the frictional forces between the right portion and its housing.
  • FIGS. 3a to 3c show, by longitudinal sections analogous to the figure 1d , other embodiments of a clutch device according to the present invention. in particular with regard to how to mount the axis of rotation 1.2.1 of the clutch wheel 1.2 so that it can be inclined.
  • the joints at the first end 1.2.2 and the second end 1.2.3 of the axis of rotation 1.2.1 of the clutch wheel 1.2 can, in principle, also be achieved by reversing the parts male and female at ends 1.2.2, 1.2.3.
  • the figure 3a shows the constellation with two female parts on the clutch wheel 1.2, the male parts being arranged on the post 1.5 and the movable element 1.6.
  • figure 3b shows the constellation with a female part on the side of the clutch wheel 1.2 oriented towards the movable element 1.6 which comprises a corresponding male part, and a male part placed on the side of the clutch wheel 1.2 oriented towards the post 1.5 which in turn comprises a corresponding female part.
  • figure 3c shows the constellation with two male parts on the clutch wheel 1.2, the female parts being arranged on the post 1.5 and the movable element 1.6. It is also possible to achieve these joints by other equivalent means without it being necessary to list them all here.
  • figures 1d and 2d are the preferred embodiments, because at best allowing to place the tilting point b of the axis 1.2.1 of the clutch wheel 1.2 fixedly in the plane of rotation p common to the input wheel 1.1 and the first output wheel 1.3.
  • the tenon 1.5 serves to materialize with its ball-shaped end the tilting point b of the axis of rotation 1.2.1 of the clutch wheel 1.2, this axis of rotation 1.2.1 can be physically embodied by an axis 1.2.1 around which the clutch wheel 1.2 rotates, as in the preferred embodiment illustrated in FIGS. figures 1d and 2d , or can only have the shape of a rudimentary axis, such as in the embodiment illustrated in FIG. figure 3a .
  • FIGS. Figures 4a to 4d and 5a to 5d show a top view, a side view, a perspective view, and a longitudinal section of the chronograph mechanism in two different positions, namely when the chronograph is activated and when it is stopped.
  • clutch 1 only has a single output wheel 1.3.
  • the movable element also produced in the form of a clutch rocker 1.6 here has a substantially different arrangement that does not change its function.
  • the chronograph mechanism comprises a field wheel 1.1 which forms in this application the input wheel of the clutch device according to this embodiment and which is driven from a gear train finishing the movement of the corresponding chronograph watch. It still has a chronograph wheel 1.3 forming an output wheel of the clutch device and carrying a chronograph seconds hand. Alternatively, the latter can also be placed on another wheel in kinematic connection with the chronograph wheel.
  • a chronograph minute hand mounted on a chronograph minute wheel which is in kinematic connection with the chronograph wheel 1.3 is not illustrated in the figures, since this general constellation is well known to those skilled in the art.
  • the chronograph mechanism finally comprises a clutch wheel 1.2 disposed between the field wheel 1.1 and the chronograph wheel 1.3.
  • the centers of the field wheel 1.1, the clutch wheel 1.2, and the chronograph wheel 1.3 form a right angle, but they could also be aligned or form another angle, function of the construction of the motion in which the mechanism should be integrated. It also depends on the shape of the clutch rocker 1.6 serving as moving element of the clutch device and which has, in the example shown in FIGS. Figures 4a to 4d and 5a to 5d , a generally elongate shape having two concave parts to avoid contact with the periphery of the field wheel 1.1 and the clutch wheel 1.2.
  • the chronograph mechanism comprises a control means for starting and stopping the measurement of a timed time, performed in the example illustrated by a column wheel 11.
  • This control means could be achieved by any other means equivalent known to those skilled in the art and serves to control the angular displacement of the clutch rocker 1.6.
  • the latter is pivotally mounted at one of its ends around the pivot axis 1.6.4, while the other of its ends is free and cooperates, preferably with a pallet mounted on the free end, with the periphery of said column wheel 11.
  • the angular displacement of the clutch rocker 1.6 towards the chronograph wheel 1.3 is limited by a pin 12.2 fixed to the frame of the timepiece, its displacement in the reverse direction could be similarly limited.
  • the movable element in the form of the clutch rocker 1.6 carries the first end 1.2.2 of the axis of rotation 1.2.1 of the clutch wheel 1.2, this using a 1.6.6 bridge mounted on the clutch rocker 1.6 which includes a corresponding housing 1.6.5.
  • the second end 1.2.3 of this axis 1.2.1 is housed in a part 12.1 of the frame of the timepiece, similarly similar to the first embodiment.
  • the axis of rotation 1.2.1 of the clutch wheel 1.2 according to the second embodiment of a clutch device according to the present invention is realized, in the example illustrated at Figures 4a to 4d and 5a to 5d , as described above in the context of the figure 3c , due to the fact that the ends 1.2.2, 1.2.3 of the axis 1.2.1 have the straight parts which are housed in corresponding housings provided on the movable element 1.6, respectively on said part 12.1 of the frame in which, preferably, stones having an aperture diameter slightly larger than the straight portions are driven to reduce the frictional forces.
  • the axis of rotation 1.2.1 of this device could be achieved as in the first embodiment, or as described above in the context of Figures 3a and 3b .
  • the tilting point b of the axis of rotation 1.2.1 of the clutch wheel 1.2 according to the second embodiment is then not located in the plane of rotation p of the input wheel 1.1 and the first output wheel 1.3.
  • the point b is close to this plane p, since the ratio d: h between the diameter d of the clutch wheel 1.2 and the height h of the axis of rotation 1.2.1 between its intersection with said plane of rotation p and the end mounted on the movable element 1.6 is in this constellation chosen so as to be greater than the value chosen for the constellation according to the first embodiment, in which the point b is by default in the plane p.
  • the ratio d: h between the diameter d of the clutch wheel 1.2 and the effective height h of the axis of rotation 1.2.1 is in the first embodiment of the device, preferably, the From 1.5: 1 to 6: 1, this ratio d: h is, in the second embodiment of the device, preferably of the order of 8: 1 to 20: 1.
  • the diameter of the clutch wheel 1.2 shown in FIGS. Figures 4a to 4d and 5a to 5d is for example between 4 mm and 5 mm, while the effective height h of the axis of rotation 1.2.1 is about 0.4 mm, corresponding to a d: h ratio of 10: 1 to 12.5: 1 .
  • said ratio between the diameter of the clutch wheel 1.2 and the height of the axis of rotation 1.2.1 between its intersection with said plane of rotation p and the end mounted on the movable element 1.6 is therefore in the range of values from 1.5: 1 to 20: 1, preferably from 2: 1 to 12: 1. This allows, depending on the physical arrangement chosen for the axis of rotation 1.2.1 of the clutch wheel 1.2, to ensure that the tilting point b of the clutch wheel 1.2 is located in the - or substantially close to the plane of rotation p of the input wheel 1.1 and the first output wheel 1.3.
  • the ratios d: h quoted above could also be expressed in terms of corresponding angles, in particular in terms of the tilt angle of the axis of rotation 1.2.1 with respect to the normal to said plane of rotation p of the input wheel 1.1 and the first output wheel 1.3, or in terms of tilting angle of the clutch wheel 1.2 relative to this plane of rotation p.
  • This angle leads, despite its small values and thanks to the ratio d: h appropriately chosen, a spacing large enough to allow disengagement of the teeth on the clutch wheel 1.2 and the first output wheel 1.3.
  • the axis of rotation 1.2.1 of the clutch wheel 1.2 can then also in the second embodiment of the clutch device according to the present invention illustrated Figures 4a to 4d and 5a to 5d be inclined relative to the normal to the plane of rotation p of the input wheel 1.1 and the output wheel 1.3, by angular pivoting of the clutch rocker 1.6, these pivoting being controlled by the column wheel 11 of in a manner known to those skilled in the art.
  • the second embodiment of the device has been described mainly to show variations in the axis of rotation 1.2.1 and the application, it is clear that the corresponding chronograph mechanism could be achieved while providing a post 1.5 fixed to the frame of the timepiece having a ball-shaped end which serves as a tilting point b of the axis of rotation 1.2.1 of the clutch wheel 1.2, as described as example in the context of the first embodiment for the application in a time-setting device. Since an integration of the clutch device according to the invention in a chronograph mechanism makes it easier to increase the diameter d of the clutch wheel, this example shows that the device can be adapted according to its application. and therefore has some flexibility.
  • a clutch device makes it possible to eliminate parasitic rotation which occurs in conventional devices, since the clutch and the disengagement are performed by tilting.
  • the device is made particularly simple, using only one number of pieces strictly necessary.
  • the clutch or disengagement is achieved mainly by providing the clutch wheel with a sufficiently large diameter relative to the effective height of its axis to allow its disengagement of at least the first wheel of output, the height of the device can be reduced.
  • the device has a minimal footprint and is adapted to be integrated even in extra-flat movements. At the same time, it has a safe and reliable operation.
  • this clutch device can advantageously be integrated in time-setting devices, chronograph or split-seconds watches, or for any function where the user can make a choice of correction or manipulation or else a system where one wishes to be able to bind or loosen, for example a decoupling of an automatic.
  • it can be integrated in all kinds of timepieces, preferably in mechanical wristwatches, but it is also possible to use it in electronic watches.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
EP15171351.8A 2014-06-19 2015-06-10 Dispositif d'embrayage basculant pour pièce d'horlogerie Active EP2957964B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH00933/14A CH709796A1 (fr) 2014-06-19 2014-06-19 Dispositif d'embrayage basculant pour pièce d'horlogerie.

Publications (3)

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EP2957964A2 EP2957964A2 (fr) 2015-12-23
EP2957964A3 EP2957964A3 (fr) 2016-06-08
EP2957964B1 true EP2957964B1 (fr) 2017-02-01

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US (1) US9411316B2 (zh)
EP (1) EP2957964B1 (zh)
JP (1) JP6614819B2 (zh)
CN (1) CN105319942B (zh)
CH (1) CH709796A1 (zh)
ES (1) ES2622989T3 (zh)
HK (1) HK1215309A1 (zh)

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EP3923085A1 (fr) * 2015-04-01 2021-12-15 Rolex Sa Mécanisme de remontage et/ou de correction d'au moins une fonction horlogère
CH711049A1 (de) * 2015-05-08 2016-11-15 Bucherer Ag Jahreskalender für mechanische Uhren.

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Also Published As

Publication number Publication date
CN105319942B (zh) 2019-03-26
US20150370221A1 (en) 2015-12-24
JP6614819B2 (ja) 2019-12-04
EP2957964A3 (fr) 2016-06-08
EP2957964A2 (fr) 2015-12-23
HK1215309A1 (zh) 2016-08-19
CN105319942A (zh) 2016-02-10
CH709796A1 (fr) 2015-12-31
JP2016004046A (ja) 2016-01-12
ES2622989T3 (es) 2017-07-10
US9411316B2 (en) 2016-08-09

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