WO2024095067A1 - Drive device for a clockwork mechanism - Google Patents

Drive device for a clockwork mechanism Download PDF

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Publication number
WO2024095067A1
WO2024095067A1 PCT/IB2023/057697 IB2023057697W WO2024095067A1 WO 2024095067 A1 WO2024095067 A1 WO 2024095067A1 IB 2023057697 W IB2023057697 W IB 2023057697W WO 2024095067 A1 WO2024095067 A1 WO 2024095067A1
Authority
WO
WIPO (PCT)
Prior art keywords
transmission member
drive
rotation
movement
drive device
Prior art date
Application number
PCT/IB2023/057697
Other languages
French (fr)
Inventor
Martin CRETEGNY
Original Assignee
Van Cleef & Arpels
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Van Cleef & Arpels filed Critical Van Cleef & Arpels
Publication of WO2024095067A1 publication Critical patent/WO2024095067A1/en

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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
    • G04B11/00—Click devices; Stop clicks; Clutches
    • G04B11/02—Devices allowing the motion of a rotatable part in only one direction
    • G04B11/04—Pawl constructions therefor, e.g. pawl secured to an oscillating member actuating a ratchet
    • 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
    • G04B11/02—Devices allowing the motion of a rotatable part in only one direction
    • G04B11/028—Devices allowing the motion of a rotatable part in only one direction with friction member, e.g. click spring
    • 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
    • G04B11/006—Clutch mechanism between two rotating members with transfer of movement in only one direction (free running devices)
    • G04B11/008—Clutch mechanism between two rotating members with transfer of movement in only one direction (free running devices) with friction members, e.g. click springs or jumper
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B13/00—Gearwork
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B13/00—Gearwork
    • G04B13/002—Gearwork where rotation in one direction is changed into a stepping movement
    • 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
    • G04B23/00—Arrangements producing acoustic signals at preselected times
    • G04B23/02—Alarm clocks
    • G04B23/023—Driving, e.g. by springs or common drive with the clockwork; gears; escapements
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B27/00—Mechanical devices for setting the time indicating means
    • G04B27/001—Internal gear therefor, e.g. for setting the second hand or for setting several clockworks
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B21/00—Indicating the time by acoustic means
    • G04B21/02—Regular striking mechanisms giving the full hour, half hour or quarter hour
    • G04B21/12—Reiterating watches or clocks
    • 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
    • G04B27/005—Mechanical devices for setting the time indicating means stepwise or on determined values
    • 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
    • G04B27/026—Mechanical devices for setting the time indicating means by making use of the winding means for several clockworks or pairs of hands and/or supplementary functions

Definitions

  • the present invention relates to a drive device for a watch mechanism.
  • the present invention relates in particular to a drive device allowing activation in passing or on demand of a watch mechanism, for example an animation, display and/or striking mechanism.
  • Certain timepieces include one or more complications making it possible to display additional information in addition to the time, for example other temporal information, and/or to create a decorative and entertaining animation, and/or to emit a sound for example to indicate the time or for an alarm.
  • These complications include watch mechanisms which, when integrated into a timepiece, are arranged to be activated in passing, that is to say at specific moments such as for example when the hour passes, or on demand via a control unit operable by the user.
  • the movement of the animation or display is cyclical: starting from an initial position, the animation or display member(s) move in a determined sequence of positions before returning to their initial position.
  • ringtones generally emit a predetermined ringing cycle each time they are activated, corresponding for example to time information.
  • the watch mechanism of such a complication is generally associated with a transmission member which transmits to the watch mechanism the energy necessary to set in motion the animation, display and/or striking member(s).
  • the transmission member can for example be supplied with energy by the motor member of the watch movement or can be independent of the watch movement.
  • the possibility of activating a complication in passing and on demand generally requires a relatively complex watch mechanism drive device, sometimes requiring two separate drive members. The volume and complexity of such devices can make their integration complicated in a timepiece, in particular in a wristwatch.
  • An aim of the present invention is to propose a drive device for a watch mechanism which allows the activation of a watch mechanism in passing and on demand with a single drive member.
  • Another aim of the present invention is to propose a drive device for a watch mechanism which allows the activation of a watch mechanism in passing and on demand in a simple, compact manner and with a minimum number of moving parts.
  • a drive device for a watch mechanism comprising a drive member mounted movable in rotation around an axis of rotation and configured to drive a watch mechanism, the drive member comprising a plurality of support surfaces; a first transmission member movable in a winding movement from a first position of the first transmission member to a second position of the first transmission member and in a return movement from its second position to its first position; a second transmission member movable in a winding movement from a first position of the second transmission member to a second position of the second transmission member and in a return movement from its second position to its first position; each transmission member being configured to, during its return movement from its second position to its first position, drive the drive member in rotation by cooperation with a bearing surface of the plurality of bearing surfaces; the second transmission member being configured so as not to block the rotation of the drive device when the first transmission member drives the drive member and the first transmission member being configured so as not to block the rotation of the drive member when the second transmission member drives the drive member.
  • a watch mechanism can thus be driven by a single drive member which can be set in motion either by a first transmission member or by a second transmission member, without the movement of the drive member being prevented by the transmission member inactive.
  • the first transmission member and the second transmission member are preferably mounted movable in rotation around the axis of rotation and rotate in one direction of rotation during the winding movement and in the opposite direction of rotation during the movement back.
  • the first transmission member and the second transmission member each comprise a thrust member to cooperate with the bearing surfaces to push the drive member in rotation, each thrust member being located at the distal end of a flexible arm, the proximal end of each of said flexible arms being mounted to rotate around the axis of rotation.
  • the first and second transmission members can thus each push the drive member in rotation by pressing their thrust member against a bearing surface of the drive member, the inactive transmission member authorizing the rotation of the drive member like a ratchet.
  • the drive device further comprises a first spring for moving the first transmission member in its winding movement from its second position to its first position and a second spring for moving the second transmission member in its cocking movement from its second position to its first position.
  • the first and second spring are preferably configured to be armed during the winding movement of the respective transmission member of its first position to its second position, winding movement which is carried out against the return force of the spring.
  • the drive member includes, for example, teeth.
  • the bearing surfaces are preferably regularly distributed around the axis of rotation over a diameter of the drive member. This allows a step-by-step advance of the drive member each time it is activated by a transmission member, the angular pitch of the drive member corresponding for example to the angle between two adjacent bearing surfaces or to a multiple of the latter.
  • the bearing surfaces are preferably formed on an interior periphery of a ring of the drive member, the ring being preferably located projecting on the board of the drive member.
  • the drive device includes a deactivation mechanism making it possible to decouple, for example, the first transmission member from the drive member.
  • a deactivation mechanism making it possible to decouple, for example, the first transmission member from the drive member. This makes it possible, in particular when the first transmission member is controlled by a watch movement, to deactivate the first transmission member when setting the time of the watch movement in order to avoid damaging the drive device. .
  • This also allows, alternatively or additionally, and with an appropriate command, to temporarily deactivate the watch mechanism driven by the drive device.
  • a timepiece comprising a watch movement and such a drive device, in which the first transmission member is moved in its winding movement from its first position to its second position by the watch movement and the second transmission member is configured to be moved in its cocking movement from its first position to its second position by a manual control mechanism.
  • the deactivation mechanism is preferably activated automatically when the watch movement is able to receive a time setting operation, for example when the winding stem is pulled.
  • the deactivation mechanism can be activated on request by a user, for example using an “on/off” button accessible by a user of the timepiece.
  • the timepiece is for example a wristwatch.
  • Figure 1 partially illustrates a drive device according to one embodiment of the invention
  • Figure 2 is a perspective view of the drive device partially illustrated in Figure 1;
  • Figures 3 to 7 illustrate the activation of the drive device of Figure 1 by a first transmission member
  • Figures 8 to 11 illustrate the activation of the drive device of Figure 1 by a second transmission member
  • Figure 12 shows in detail a deactivation mechanism for the drive device of Figure 1.
  • the drive device 1 of the invention is a device allowing the activation, for example in passing or on demand, of a watch mechanism not shown, for example of an animation, display and/or mechanism. or ringing.
  • the drive device 1 is intended to drive a watch mechanism operating in cycles, for example by animation, display or ringing cycles, and the drive device 1 is configured to advance step by step, each step preferably corresponding to a cycle of the driven watch mechanism.
  • the drive device 1 of the invention comprises a drive member 2 mounted movable in rotation around an axis of rotation 10.
  • the drive member 2 is configured to drive the driven watch mechanism by the drive device 1.
  • the drive member 2 is for example a toothed wheel whose teeth 29 are intended to mesh with a conjugate mobile not shown, for example a toothed wheel, of the watch mechanism.
  • Other configurations of the drive member are however possible within the framework of the invention.
  • the drive member is for example a cam or teeth activating hammer lifts for a strike.
  • the drive device 1 comprises two transmission members 3, 4 for putting the drive member 2 in movement around the axis of rotation 10 in order to activate the watch mechanism driven by the device.
  • drive 1 each transmission member 3, 4 is configured to set the drive member 2 in motion alone.
  • Each transmission member 3, 4 is also configured to authorize the movement of the member drive member 2 when the latter is set in motion by the other transmission member 4, 3.
  • the drive member 2 is preferably advanced by one not predetermined in a direction of rotation, for example clockwise. The pitch is preferably determined to correspond to the driving of the watch mechanism over a complete cycle.
  • each transmission member 3, 4 is configured to perform a back and forth movement between a first position, for example a rest position, and a second position, for example a position of 'armament.
  • a first position for example a rest position
  • a second position for example a position of 'armament.
  • the drive member 2 is not set in motion by the transmission member 3, 4.
  • the drive member is set in motion and rotated one step around the axis of rotation 10 in a determined direction, for example clockwise.
  • each transmission member 3, 4 comprises a pushing member 30, 40 configured to come into contact with a bearing surface 21 of the drive member 2 in order to push the member drive 2 in rotation over at least a fraction of a revolution, corresponding for example to a complete cycle of the watch mechanism driven by the drive device 1.
  • Each thrust member 30, 40 is for example located at the distal end of a flexible arm 31, 41 whose proximal end is mounted to rotate, for example around the axis of rotation 10 around which the drive member 2 is also mounted to rotate.
  • Each flexible arm 31, 41 is preferably configured so as to be flexible in a radial direction relative to the axis of rotation 10 in order to be able to slide on a surface of the drive member 2 when the latter is set in motion by the other flexible arm 41, 31, and rigid in a tangential direction relative to the axis of rotation 10 in order to be able to push the drive member 2 in rotation by cooperation of the corresponding pushing member 30, 40 and a support surface 21.
  • Each transmission member 3, 4 thus acts like a ratchet, allowing the rotation of the drive member 2 relative to the transmission member 3, 4 in a first direction of rotation and blocking the rotation of the drive member 2 relative to the transmission member 3, 4 in a second direction of rotation opposite to the first as soon as the corresponding thrust member 30, 40 comes into contact with a bearing surface 21 of the drive member 2.
  • Each flexible arm 31, 41 comprises for example a rigid base mounted in rotation on the axis of rotation 10 and extending essentially radially from the axis of rotation 10, and an elongated part extending from the end of the rigid base essentially in an arc relative to the axis of rotation 10 and flexible in a radial direction relative to the axis of rotation 10.
  • the drive member 2 preferably comprises a plurality of bearing surfaces 21 intended to cooperate with the thrust members 30, 40 for rotating the drive member 2.
  • the bearing surfaces 21 are for example formed by interior notches made on a ring 20 of the drive member 2.
  • the ring 20 is for example located projecting on the board of the toothed wheel 2.
  • the ring 20 is for example formed in one piece with the drive member 2 or fixed, for example welded, to the drive member 2.
  • the notches are preferably uniformly distributed over the inner circumference of the ring 20 In the case illustrated, there are five notches, each separated by 72°.
  • the transmission members 3, 4 are configured to be actuated independently of each other.
  • a first transmission member 3 of the two transmission members 3, 4 is for example intended to be actuated by a watch movement, for example by the watch movement of a timepiece in which the drive device 1 and the mechanism watchmaker driven by the drive device 1 are integrated.
  • a second transmission member 4 of the two transmission members 3, 4 is for example intended to be actuated by a control mechanism operable on demand by a user of the timepiece, for example by means of a button or any other suitable actuator located on the case of the timepiece.
  • the first transmission member 3 comprises for example a pinion 32 integral in rotation with the flexible arm 31 of the first transmission member 3.
  • the pinion 32 meshes for example with a first rake 39 intended to be driven by a watch movement.
  • the running of the watch movement of the timepiece drives for example the first rake 39 in a clockwise rotating winding movement against the force of a first spring 38, for example a first leaf spring.
  • the clockwise rotation of the first rake 39 causes the counterclockwise rotation of the first transmission member 3.
  • the first spring 38 exerts on the first rake 39 an elastic force tending to bring it counterclockwise into a first position of the first rake 39 , typically a rest position, which corresponds to a first position of the first transmission member 3.
  • the first rake 39 which has reached a second position corresponding to a second position of the first transmission member 3 , typically a winding position, is released by the watch movement and returns counterclockwise to its rest position under the effect of the first spring 38. In doing so, it drives the first transmission member 3 clockwise for at least a fraction of a turn.
  • the thrust member 30 of the first transmission member 3 comes into contact with a bearing surface 21 of the drive member 2 and pushes it into rotation over a fraction of a revolution preferably corresponding to a cycle, for example an animation, display and/or ringing cycle, of the watch mechanism driven by the drive device 1.
  • the second transmission member 4 comprises for example a rake 42 integral in rotation with the flexible arm 41 of the second transmission member 4.
  • the rake 42 meshes for example with a second rake 49 intended to be driven by an on-demand control mechanism.
  • the control mechanism for example by pressing a button on the timepiece
  • the second rake 49 is driven in a movement of arming in rotation in the clockwise direction against the force of a second spring 48, for example a second leaf spring.
  • the clockwise rotation of the first rake 39 causes the counterclockwise rotation of the first member of transmission 3.
  • the first spring 38 exerts on the second rake 49 an elastic force tending to bring it counterclockwise into a first position of the second rake 49, typically a rest position, which corresponds to a first position of the second transmission member 4
  • a rest position which corresponds to a first position of the second transmission member 4
  • the second rake 49 which has reached a second position corresponding to a second position of the second transmission member 4, typically a cocking position. , is released by the manual control mechanism and returns to its rest position counterclockwise under the effect of the second spring 48. In doing so, it drives the second transmission member 4 clockwise over at least a fraction of a turn.
  • the thrust member 40 of the second transmission member 4 comes into contact with a bearing surface 21 of the drive member 2 and pushes it into rotation over a fraction of a revolution preferably corresponding to a cycle, for example an animation, display and/or ringing cycle, of the watch mechanism driven by the drive device 1.
  • the drive member 2 is rotated by the corresponding transmission member 3, 4 over a determined fraction of a turn , for example a fifth of a turn, or 72 degrees.
  • This fraction of a turn corresponds to a pitch of the drive member 2 which preferably corresponds to the angular pitch between two adjacent bearing surfaces 21 of the drive member 2, or to a multiple of the latter.
  • Figures 3 to 7 illustrate the winding movement of the first transmission member 3 and the rotation of the drive member 2 during the return movement of the first transmission member 3.
  • the Figure 3 shows the first transmission member 3 partially armed, typically between two activations when the watch mechanism driven by the drive device 1 passes.
  • the second transmission member 4 and the drive member 2 are immobile, as long as the control mechanism of the second transmission member 4 is not activated by a user.
  • the first transmission member 3 is driven in the counterclockwise direction preferably by the watch movement of the timepiece in which the drive device 1 is integrated.
  • the rotation speed of the first transmission member 3 during the winding movement is determined by an appropriate configuration of the kinematic chain linking the first transmission member 3 to the watch movement, depending for example on the periodicity at which the watch mechanism should be activated, for example every 15 minutes, once an hour, once or twice a day, etc.
  • the thrust member 30 of the first transmission member 3 slides along the inner periphery of the ring 20 with a friction force determined by the flexibility of its flexible arm 31.
  • Figure 4 shows the first transmission member 3 being armed just before its thrust member 30 falls back into the next notch of the ring 20 under the effect of the elastic force of its flexible arm 31.
  • Figure 5 shows a second position of the first transmission member 3 at the end of the winding movement, typically a winding position.
  • the angular displacement of the first transmission member 3 during the winding movement is greater than the angular pitch between two notches of the drive member 2 in order to ensure that the thrust member 30 is passed in addition to the next notch at the end of the cocking movement, as illustrated in Figure 4.
  • the angular step between them is 72°.
  • the first transmission member 3 is thus rotated by an angle greater than 72° during the movement arming, preferably at an angle greater than 80°, for example at an angle of 90°.
  • the first armed transmission member 3 is released and tends to return clockwise, from the second position, typically the winding position, to the first position, typically the rest position illustrated in Figure 1 under the effect of the first spring 38.
  • the thrust member 30 of the first transmission member 3 is inserted into the next notch of the ring 20, as illustrated in Figure 6, and pushes against the corresponding support surface 21 to put the drive member 2 in movement in the clockwise direction, as illustrated in Figure 7.
  • Figures 8 to 11 illustrate the activation of the drive member 2 by the second transmission member 4, for example activation on demand between two activations passing through the first transmission member 3.
  • Figure 8 shows a example of a starting position in which the first transmission member 3 is partially armed and the second transmission member 4 is in a first position, typically its rest position.
  • the second transmission member 4 is armed, for example by via a manual control mechanism operated using a button on the timepiece accessible by a user.
  • the second transmission member 4 is driven counterclockwise and the thrust member 40 of the second transmission member 4 slides against the inner periphery of the ring 20 until it passes besides the next notch.
  • the angular displacement of the second transmission member 4 during the winding movement is preferably greater than the angular pitch between two notches of the drive member 2 in order to ensure that the thrust member 40 is bypassed the next notch at the end of the cocking movement, as illustrated in Figure 9.
  • the second transmission member 4 is rotated by an angle greater than 72° during the movement arming, preferably at an angle greater than 80°, for example at an angle of 90°.
  • the thrust member 40 of the second transmission member 4 is inserted into the next notch of the ring 20, as illustrated in figure 10, and pushes against the corresponding bearing surface 21 to put the drive member 2 in movement in the clockwise direction, as illustrated in figure 11.
  • the thrust member 30 of the first transmission member 3 slides on the inner circumference of the ring 20 with a determined force by the flexibility of the flexible arm 31 of the first transmission member 3, as well as by the nature and surface condition of the materials used for the manufacture of the flexible arm 31 and the ring 20, without preventing this rotation.
  • the drive member 2 At the end of the return movement of the second transmission member 4, the drive member 2 has been rotated by an angle corresponding to the angular pitch between two bearing surfaces 21, for example a fifth of a turn, and the second drive member 4 finds itself in the rest position that he had for example in figure 8.
  • the flexible arm 31 of the first transmission member 3 is preferably located in another plane than the flexible arm 41 of the second transmission member 4, thus allowing the movement of each transmission member 3, 4 independently from each other, without risk of collision.
  • the drive device 1 of the invention further comprises a deactivation mechanism making it possible to deactivate the first transmission member 3 in order to allow, for example, setting the time timepiece in which the drive device 1 is integrated without risk of damage to the drive device or triggering by the first transmission member 3.
  • the deactivation mechanism is for example activated automatically when it is activated. to the time of the timepiece, for example via the crown stem not shown.
  • the deactivation mechanism can be activated on demand, for example to allow the user of the timepiece to temporarily deactivate the activation of the watch mechanism driven by the drive device 1 of the invention. This allows, for example, a user to deactivate for a time the corresponding animation, display and/or ringing of the timepiece.
  • Actuation on demand of the deactivation mechanism 5 is done for example using a button, for example an “on/off” button on the timepiece accessible by the user.
  • the deactivation mechanism comprises a deactivation arm 5 acting on the flexible arm 31 of the first transmission member 3, against the return force of the latter, to separate from the ring 20 the thrust member 30 of the first transmission member 3 so that it no longer comes into contact with the bearing surfaces 21.
  • the deactivation arm 5 acts on the flexible arm 31 of the first deactivation member transmission 3 for example via a pin 33 preferably located near the distal end of the flexible arm 31, for example on the corresponding thrust member 30.
  • the drive member 2 comprises five bearing surfaces 21 regularly distributed around the axis of rotation 10 over a diameter of the drive member 2.
  • Other forms of execution execution are however possible within the framework of the invention.
  • the number of supporting surfaces may be different, determined for example by the angular step that the drive member must take to drive the watch mechanism during a complete cycle at each activation.
  • the distribution of the support surfaces around the axis of rotation can also be irregular, if for example the watch mechanism driven by the drive device is configured to carry out a sequence of cycles, certain cycles of the sequence of cycles having a different duration.
  • the drive device of the invention so that each time the drive member is activated by the first transmission member and/or by the second transmission member, the drive member is rotated by a pitch which is a multiple of the angular pitch between two adjacent bearing surfaces.
  • the transmission members are configured to rotate the drive member clockwise at each step, each actuating member 3, 4 being configured to rotate counterclockwise during the movement cocking and clockwise during the return movement. It is of course possible in the context of the invention to configure the transmission members to rotate the drive member in a counterclockwise direction at each step, each member actuation 3, 4 then being configured to rotate clockwise during the cocking movement and counterclockwise during the return movement, the orientation of the bearing surfaces of the drive member then being reversed relative to the orientation of the bearing surfaces 21 of the drive member 2 illustrated.
  • the transmission members are configured to push the drive member into rotation.
  • Other forms of execution are however possible within the framework of the invention. It is for example possible to consider configuring the transmission members to pull the drive member using a hook cooperating with appropriate bearing surfaces of the drive member.
  • the transmission members transmit to the drive member, to set it in motion, the energy developed by a spring and previously accumulated during the winding of the corresponding transmission member , for example either using a watch movement or using a manual control mechanism.
  • the transmission elements can be directly driven in a back-and-forth movement, for example by a watch movement through an appropriate clutch release system, by a manual lever, etc.
  • the elements of the kinematic chains between the transmission members and the corresponding energy sources may also differ from the rakes and the pinion implemented in the illustrated embodiment.
  • These kinematic chains may for example include other types of gears and/or other forms of transmission elements, for example pulleys or any other suitable component.
  • the drive device was described above with two transmission members acting on the same drive member and actuated by different means according to different criteria.
  • the drive device can of course comprise, in the context of the invention, more than two transmission members configured to act on the same drive member in order to set it in motion.
  • the drive device comprises, in addition to the first and second drive members described above, a third drive member configured to set the drive member in motion preferably according to yet other criteria.
  • the third drive member is for example actuated by a dedicated mechanism following an external request, for example an environmental request such as a variation in pressure, acceleration, etc.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Electromechanical Clocks (AREA)
  • Transmission Devices (AREA)

Abstract

Drive device (1) for a clockwork mechanism, comprising a drive member (2) mounted so as to be rotatable about an axis of rotation (10) and configured to drive a clockwork mechanism, the drive member (2) comprising a plurality of bearing surfaces (21), a first transmission member (3) movable from a first position of the first transmission member (3) to a second position of the first transmission member (3) and from the second position of the first transmission member (3) to the first position of the first transmission member (3), a second transmission member (4) movable from a first position of the second transmission member (4) to a second position of the second transmission member (4) and from the second position of the second transmission member (4) to the first position of the second transmission member (4), each transmission member (3; 4) being configured such that, during its movement from its second position to its first position, it drives the drive member (2) in rotation by cooperation with a bearing surface (21) of the plurality of bearing surfaces (21), the second transmission member (4) being configured so as not to block the rotation of the drive device (2) when the first transmission member (3) is driving the drive member (2), and the first transmission member (3) being configured so as not to block the rotation of the drive member (2) when the second transmission member (4) is driving the drive member (2). Timepiece comprising a timepiece movement and such a drive device, in which the first transmission member is moved from its first position to its second position by the timepiece movement, and the second transmission member is configured to be moved from its first position to its second position by a manual control mechanism.

Description

Dispositif d’entraînement pour mécanisme horloger Driving device for watch mechanism
La présente invention concerne un dispositif d’entraînement pour un mécanisme horloger. La présente invention concerne en particulier un dispositif d’entraînement permettant l’activation au passage ou à la demande d’un mécanisme horloger, par exemple d’un mécanisme d’animation, d’affichage et/ou de sonnerie. The present invention relates to a drive device for a watch mechanism. The present invention relates in particular to a drive device allowing activation in passing or on demand of a watch mechanism, for example an animation, display and/or striking mechanism.
Certaines pièces d’horlogerie comprennent une ou plusieurs complications permettant d’afficher des informations additionnelles en sus de l’heure, par exemple d’autres informations temporelles, et/ou de créer une animation décorative et divertissante, et/ou d’émettre un son par exemple pour indiquer l’heure ou pour une alarme. Ces complications comprennent des mécanismes horlogers qui, lorsqu’ils sont intégrés dans une pièce d’horlogerie, sont agencés pour être activés au passage, c’est-à-dire à des moments déterminés tels que par exemple au passage de l’heure, ou à la demande via un organe de commande actionnable par l’utilisateur. Typiquement, le mouvement de l’animation ou de l’affichage est cyclique : partant d’une position initiale, le ou les organes d’animation ou d’affichage se déplacent dans une séquence déterminée de positions avant de revenir à leur position initiale. De manière similaire, les sonneries émettent généralement un cycle de sonnerie prédéterminé à chaque activation, correspondant par exemple à une information horaire. Certain timepieces include one or more complications making it possible to display additional information in addition to the time, for example other temporal information, and/or to create a decorative and entertaining animation, and/or to emit a sound for example to indicate the time or for an alarm. These complications include watch mechanisms which, when integrated into a timepiece, are arranged to be activated in passing, that is to say at specific moments such as for example when the hour passes, or on demand via a control unit operable by the user. Typically, the movement of the animation or display is cyclical: starting from an initial position, the animation or display member(s) move in a determined sequence of positions before returning to their initial position. Similarly, ringtones generally emit a predetermined ringing cycle each time they are activated, corresponding for example to time information.
Le mécanisme horloger d’une telle complication est généralement associé à un organe de transmission qui transmet au mécanisme horloger l’énergie nécessaire à la mise en mouvement du ou des organes d’animation, d’affichage et/ou de sonnerie. Dans le cas où le mécanisme horloger est associé à un mouvement horloger d’une pièce d’horlogerie, l’organe de transmission peut être par exemple alimenté en énergie par l’organe moteur du mouvement horloger ou peut être indépendant du mouvement horloger. La possibilité d’activer une complication au passage et à la demande requiert généralement un dispositif d’entraînement du mécanisme horloger relativement complexe, nécessitant parfois deux organes d’entraînement distincts. Le volume et la complexité de tels dispositifs peut rendre leur intégration compliquée dans une pièce d’horlogerie, en particulier dans une montre-bracelet. The watch mechanism of such a complication is generally associated with a transmission member which transmits to the watch mechanism the energy necessary to set in motion the animation, display and/or striking member(s). In the case where the watch mechanism is associated with a watch movement of a timepiece, the transmission member can for example be supplied with energy by the motor member of the watch movement or can be independent of the watch movement. The possibility of activating a complication in passing and on demand generally requires a relatively complex watch mechanism drive device, sometimes requiring two separate drive members. The volume and complexity of such devices can make their integration complicated in a timepiece, in particular in a wristwatch.
Un but de la présente invention est de proposer un dispositif d’entraînement pour mécanisme horloger qui permette l’activation d’un mécanisme horloger au passage et à la demande avec un seul organe d’entraînement. An aim of the present invention is to propose a drive device for a watch mechanism which allows the activation of a watch mechanism in passing and on demand with a single drive member.
Un autre but de la présente invention est de proposer un dispositif d’entraînement pour mécanisme horloger qui permette l’activation d’un mécanisme horloger au passage et à la demande de manière simple, compact et avec un nombre minimal de pièces en mouvement. Another aim of the present invention is to propose a drive device for a watch mechanism which allows the activation of a watch mechanism in passing and on demand in a simple, compact manner and with a minimum number of moving parts.
Ces buts et d’autres avantages sont atteints par un dispositif d’entraînement pour mécanisme horloger, comprenant un organe d’entraînement monté mobile en rotation autour d’un axe de rotation et configuré pour entraîner un mécanisme horloger, l’organe d’entraînement comprenant une pluralité de surfaces d’appui ; un premier organe de transmission déplaçable dans un mouvement d’armage d’une première position du premier organe de transmission à une deuxième position du premier organe de transmission et dans un mouvement de retour de sa deuxième position à sa première position ; un deuxième organe de transmission déplaçable dans un mouvement d’armage d’une première position du deuxième organe de transmission à une deuxième position du deuxième organe de transmission et dans un mouvement de retour de sa deuxième position à sa première position ; chaque organe de transmission étant configuré pour, au cours de son mouvement de retour de sa deuxième position à sa première position, entraîner l’organe d’entraînement en rotation par coopération avec une surface d’appui de la pluralité de surfaces d’appui ; le deuxième organe de transmission étant configuré pour ne pas bloquer la rotation du dispositif d’entraînement lorsque le premier organe de transmission entraîne l’organe d’entraînement et le premier organe de transmission étant configuré pour ne pas bloquer la rotation de l’organe d’entraînement lorsque le deuxième organe de transmission entraîne l’organe d’entraînement. These aims and other advantages are achieved by a drive device for a watch mechanism, comprising a drive member mounted movable in rotation around an axis of rotation and configured to drive a watch mechanism, the drive member comprising a plurality of support surfaces; a first transmission member movable in a winding movement from a first position of the first transmission member to a second position of the first transmission member and in a return movement from its second position to its first position; a second transmission member movable in a winding movement from a first position of the second transmission member to a second position of the second transmission member and in a return movement from its second position to its first position; each transmission member being configured to, during its return movement from its second position to its first position, drive the drive member in rotation by cooperation with a bearing surface of the plurality of bearing surfaces; the second transmission member being configured so as not to block the rotation of the drive device when the first transmission member drives the drive member and the first transmission member being configured so as not to block the rotation of the drive member when the second transmission member drives the drive member.
Un mécanisme horloger peut ainsi être entraîné par un seul organe d’entraînement pouvant être mis en mouvement soit par un premier organe de transmission, soit par un deuxième organe de transmission, sans que le mouvement de l’organe d’entraînement ne soit empêché par l’organe de transmission inactif. A watch mechanism can thus be driven by a single drive member which can be set in motion either by a first transmission member or by a second transmission member, without the movement of the drive member being prevented by the transmission member inactive.
Le premier organe de transmission et le deuxième organe de transmission sont de préférence montés mobiles en rotation autour de l’axe de rotation et tournent dans un sens de rotation au cours du mouvement d’armage et dans le sens de rotation inverse au cours du mouvement de retour. The first transmission member and the second transmission member are preferably mounted movable in rotation around the axis of rotation and rotate in one direction of rotation during the winding movement and in the opposite direction of rotation during the movement back.
Selon une forme préférentielle, le premier organe de transmission et le deuxième organe de transmission comprennent chacun un organe de poussée pour coopérer avec les surfaces d’appui pour pousser l’organe d’entraînement en rotation, chaque organe de poussée étant situé à l’extrémité distale d’un bras flexible, l’extrémité proximale de chacun desdits bras flexibles étant montée en rotation autour de l’axe de rotation. According to a preferred form, the first transmission member and the second transmission member each comprise a thrust member to cooperate with the bearing surfaces to push the drive member in rotation, each thrust member being located at the distal end of a flexible arm, the proximal end of each of said flexible arms being mounted to rotate around the axis of rotation.
Les premier et deuxième organes de transmission peuvent ainsi chacun pousser en rotation l’organe d’entraînement par appui de leur organe de poussée contre une surface d’appui de l’organe d’entraînement, l’organe de transmission inactif autorisant la rotation de l’organe d’entraînement à l’instar d’un cliquet. The first and second transmission members can thus each push the drive member in rotation by pressing their thrust member against a bearing surface of the drive member, the inactive transmission member authorizing the rotation of the drive member like a ratchet.
Selon certaines formes d’exécution, le dispositif d’entraînement comprend en outre un premier ressort pour déplacer le premier organe de transmission dans son mouvement d’armage de sa deuxième position à sa première position et un deuxième ressort pour déplacer le deuxième organe de transmission dans son mouvement d’armage de sa deuxième position à sa première position. Les premier et deuxième ressort sont de préférence configurés pour être armés au cours du mouvement d’armage de l’organe de transmission respectif de sa première position à sa deuxième position, mouvement d’armage qui est effectué contre la force de rappel du ressort. According to certain embodiments, the drive device further comprises a first spring for moving the first transmission member in its winding movement from its second position to its first position and a second spring for moving the second transmission member in its cocking movement from its second position to its first position. The first and second spring are preferably configured to be armed during the winding movement of the respective transmission member of its first position to its second position, winding movement which is carried out against the return force of the spring.
L’organe d’entraînement comprend par exemple une denture. The drive member includes, for example, teeth.
Les surfaces d’appui sont de préférence régulièrement réparties autour de l’axe de rotation sur un diamètre de l’organe d’entraînement. Cela permet une avance pas-à-pas de l’organe d’entraînement à chaque activation par un organe de transmission, le pas angulaire de l’organe d’entraînement correspondant par exemple à l’angle entre deux surfaces d’appui adjacentes ou à un multiple de ce dernier. The bearing surfaces are preferably regularly distributed around the axis of rotation over a diameter of the drive member. This allows a step-by-step advance of the drive member each time it is activated by a transmission member, the angular pitch of the drive member corresponding for example to the angle between two adjacent bearing surfaces or to a multiple of the latter.
Les surfaces d’appui sont de préférence formées sur une périphérie intérieure d’un anneau de l’organe d’entraînement, l’anneau étant préférentiellement situé en saillie sur la planche de l’organe d’entraînement. Cela représente l’avantage que les organes de transmission peuvent être au moins partiellement disposés à l’intérieur de cet anneau, permettant ainsi une construction compacte du dispositif d’entraînement de l’invention. The bearing surfaces are preferably formed on an interior periphery of a ring of the drive member, the ring being preferably located projecting on the board of the drive member. This represents the advantage that the transmission members can be at least partially arranged inside this ring, thus allowing a compact construction of the drive device of the invention.
Optionnellement, le dispositif d’entraînement comprend un mécanisme de désactivation permettant de découpler par exemple le premier organe de transmission de l’organe d’entraînement. Cela permet, en particulier lorsque le premier organe de transmission est commandé au passage par un mouvement horloger, de désactiver le premier organe de transmission lors de la mise à l’heure du mouvement horloger afin d’éviter d’endommager le dispositif d’entraînement. Cela permet aussi, alternativement ou additionnellement, et avec une commande appropriée, de désactiver temporairement le mécanisme horloger entraîné par le dispositif d’entraînement. Optionally, the drive device includes a deactivation mechanism making it possible to decouple, for example, the first transmission member from the drive member. This makes it possible, in particular when the first transmission member is controlled by a watch movement, to deactivate the first transmission member when setting the time of the watch movement in order to avoid damaging the drive device. . This also allows, alternatively or additionally, and with an appropriate command, to temporarily deactivate the watch mechanism driven by the drive device.
Les buts cités plus haut et d’autres avantages sont également atteints par une pièce d’horlogerie comprenant un mouvement horloger et un tel dispositif d’entraînement, dans laquelle le premier organe de transmission est déplacé dans son mouvement d’armage de sa première position à sa deuxième position par le mouvement horloger et le deuxième organe de transmission est configuré pour être déplacé dans son mouvement d’armage de sa première position à sa deuxième position par un mécanisme de commande manuelle. The goals mentioned above and other advantages are also achieved by a timepiece comprising a watch movement and such a drive device, in which the first transmission member is moved in its winding movement from its first position to its second position by the watch movement and the second transmission member is configured to be moved in its cocking movement from its first position to its second position by a manual control mechanism.
Dans une telle pièce d’horlogerie, le mécanisme de désactivation est de préférence actionné automatiquement lorsque le mouvement horloger est en mesure de recevoir une opération de mise à l’heure, par exemple lorsque la tige de remontoir est tirée. In such a timepiece, the deactivation mechanism is preferably activated automatically when the watch movement is able to receive a time setting operation, for example when the winding stem is pulled.
Alternativement ou additionnellement, le mécanisme de désactivation est actionnable à la demande par un utilisateur, par exemple à l’aide d’un bouton « on/off » accessible par un utilisateur de la pièce d’horlogerie. Alternatively or additionally, the deactivation mechanism can be activated on request by a user, for example using an “on/off” button accessible by a user of the timepiece.
La pièce d’horlogerie est par exemple une montre-bracelet. The timepiece is for example a wristwatch.
La présente invention sera mieux comprise à l’aide de la description ci- dessous illustrée par les figures, où : The present invention will be better understood with the help of the description below illustrated by the figures, where:
La figure 1 illustre partiellement un dispositif d’entraînement selon une forme d’exécution de l’invention ; Figure 1 partially illustrates a drive device according to one embodiment of the invention;
La figure 2 est une vue en perspective du dispositif d’entraînement partiellement illustré à la figure 1 ; Figure 2 is a perspective view of the drive device partially illustrated in Figure 1;
Les figures 3 à 7 illustrent l’activation du dispositif d’entraînement de la figure 1 par un premier organe de transmission ; Figures 3 to 7 illustrate the activation of the drive device of Figure 1 by a first transmission member;
Les figures 8 à 11 illustrent l’activation du dispositif d’entraînement de la figure 1 par un deuxième organe de transmission ; Figures 8 to 11 illustrate the activation of the drive device of Figure 1 by a second transmission member;
La figure 12 montre en détail un mécanisme de désactivation pour le dispositif d’entraînement de la figure 1 . Figure 12 shows in detail a deactivation mechanism for the drive device of Figure 1.
Le dispositif d’entraînement 1 de l’invention est un dispositif permettant l’activation, par exemple au passage ou à la demande, d’un mécanisme horloger non représenté, par exemple d’un mécanisme d’animation, d’affichage et/ou de sonnerie. De préférence, le dispositif d’entraînement 1 est destiné à entraîner un mécanisme horloger fonctionnant par cycles, par exemple par cycles d’animation, d’affichage ou de sonneries, et le dispositif d’entraînement 1 est configuré pour avancer pas-à-pas, chaque pas correspondant de préférence à un cycle du mécanisme horloger entraîné. The drive device 1 of the invention is a device allowing the activation, for example in passing or on demand, of a watch mechanism not shown, for example of an animation, display and/or mechanism. or ringing. Preferably, the drive device 1 is intended to drive a watch mechanism operating in cycles, for example by animation, display or ringing cycles, and the drive device 1 is configured to advance step by step, each step preferably corresponding to a cycle of the driven watch mechanism.
En référence aux figures, le dispositif d’entraînement 1 de l’invention comprend un organe d’entraînement 2 monté mobile en rotation autour d’un axe de rotation 10. L’organe d’entraînement 2 est configuré pour entraîner le mécanisme horloger entraîné par le dispositif d’entraînement 1. Selon la forme d’exécution illustrée, l’organe d’entraînement 2 est par exemple une roue dentée dont la denture 29 est destinée à engrener avec un mobile conjugué non représenté, par exemple une roue dentée, du mécanisme horloger. D’autres configurations de l’organe d’entraînement sont cependant possibles dans le cadre de l’invention. Selon certaines formes d’exécution, l’organe d’entraînement est par exemple une came ou des dents actionnant des levées de marteau pour une sonnerie. With reference to the figures, the drive device 1 of the invention comprises a drive member 2 mounted movable in rotation around an axis of rotation 10. The drive member 2 is configured to drive the driven watch mechanism by the drive device 1. According to the illustrated embodiment, the drive member 2 is for example a toothed wheel whose teeth 29 are intended to mesh with a conjugate mobile not shown, for example a toothed wheel, of the watch mechanism. Other configurations of the drive member are however possible within the framework of the invention. According to certain embodiments, the drive member is for example a cam or teeth activating hammer lifts for a strike.
Selon l’invention, le dispositif d’entraînement 1 comprend deux organes de transmission 3, 4 pour mettre l’organe d’entraînement 2 en mouvement autour de l’axe de rotation 10 afin d’actionner le mécanisme horloger entraîné par le dispositif d’entraînement 1. Selon l’invention, chaque organe de transmission 3, 4 est configuré pour mettre seul en mouvement l’organe d’entraînement 2. Chaque organe de transmission 3, 4 est par ailleurs configuré pour autoriser le mouvement de l’organe d’entraînement 2 lorsque ce dernier est mis en mouvement par l’autre organe de transmission 4, 3. À chaque mise en mouvement par un organe de transmission 3, 4, l’organe d’entraînement 2 est de préférence avancé d’un pas prédéterminé dans un sens de rotation, par exemple dans le sens horaire. Le pas est de préférence déterminé pour correspondre à l’entraînement du mécanisme horloger sur un cycle complet. According to the invention, the drive device 1 comprises two transmission members 3, 4 for putting the drive member 2 in movement around the axis of rotation 10 in order to activate the watch mechanism driven by the device. drive 1. According to the invention, each transmission member 3, 4 is configured to set the drive member 2 in motion alone. Each transmission member 3, 4 is also configured to authorize the movement of the member drive member 2 when the latter is set in motion by the other transmission member 4, 3. Each time it is set in motion by a transmission member 3, 4, the drive member 2 is preferably advanced by one not predetermined in a direction of rotation, for example clockwise. The pitch is preferably determined to correspond to the driving of the watch mechanism over a complete cycle.
Comme expliqué plus en détails ci-dessous, chaque organe de transmission 3, 4 est configuré pour effectuer un mouvement de va-et-vient entre une première position, par exemple une position de repos, et une deuxième position, par exemple une position d’armage. Au cours du déplacement de l’organe de transmission 3, 4 de sa position de repos à sa position d’armage, l’organe d’entraînement 2 n’est pas mis en mouvement par l’organe de transmission 3, 4. Lors du retour en sens inverse de l’organe de transmission 3, 4 de sa position d’armage à sa position de repos, l’organe d’entraînement est mis en mouvement et tourné d’un pas autour de l’axe de rotation 10 dans une direction déterminée, par exemple en sens horaire. As explained in more detail below, each transmission member 3, 4 is configured to perform a back and forth movement between a first position, for example a rest position, and a second position, for example a position of 'armament. During the movement of the transmission member 3, 4 from its rest position to its cocking position, the drive member 2 is not set in motion by the transmission member 3, 4. When returning in the opposite direction of the transmission member 3, 4 from its cocking position to its rest position, the drive member is set in motion and rotated one step around the axis of rotation 10 in a determined direction, for example clockwise.
Selon la forme d’exécution illustrée, chaque organe de transmission 3, 4 comprend un organe de poussée 30, 40 configuré pour entrer en contact avec une surface d’appui 21 de l’organe d’entraînement 2 afin de pousser l’organe d’entraînement 2 en rotation sur au moins une fraction de tour, correspondant par exemple à un cycle complet du mécanisme horloger entraîné par le dispositif d’entraînement 1. Chaque organe de poussée 30, 40 est par exemple situé à l’extrémité distale d’un bras flexible 31 , 41 dont l’extrémité proximale est montée en rotation, par exemple autour de l’axe de rotation 10 autour duquel l’organe d’entraînement 2 est également monté en rotation. Chaque bras flexible 31 , 41 est de préférence configuré de manière à être flexible dans une direction radiale par rapport à l’axe de rotation 10 afin de pouvoir glisser sur une surface de l’organe d’entraînement 2 lorsque ce dernier est mis en mouvement par l’autre bras flexible 41 , 31 , et rigide dans une direction tangentielle par rapport à l’axe de rotation 10 afin de pouvoir pousser l’organe d’entraînement 2 en rotation par coopération de l’organe de poussée 30, 40 correspondant et une surface d’appui 21. Chaque organe de transmission 3, 4 agit ainsi comme un cliquet, permettant la rotation de l’organe d’entraînement 2 relativement à l’organe de transmission 3, 4 dans un premier sens de rotation et bloquant la rotation de l’organe d’entraînement 2 relativement à l’organe de transmission 3, 4 dans un deuxième sens de rotation inverse du premier dès que l’organe de poussée 30, 40 correspondant entre en contact avec une surface d’appui 21 de l’organe d’entraînement 2. Chaque bras flexible 31 , 41 comprend par exemple une base rigide montée en rotation sur l’axe de rotation 10 et s’étendant essentiellement radialement depuis l’axe de rotation 10, et une partie allongée s’étendant depuis l’extrémité de la base rigide essentiellement en arc de cercle par rapport à l’axe de rotation 10 et flexible dans une direction radiale par rapport à l’axe de rotation 10. According to the illustrated embodiment, each transmission member 3, 4 comprises a pushing member 30, 40 configured to come into contact with a bearing surface 21 of the drive member 2 in order to push the member drive 2 in rotation over at least a fraction of a revolution, corresponding for example to a complete cycle of the watch mechanism driven by the drive device 1. Each thrust member 30, 40 is for example located at the distal end of a flexible arm 31, 41 whose proximal end is mounted to rotate, for example around the axis of rotation 10 around which the drive member 2 is also mounted to rotate. Each flexible arm 31, 41 is preferably configured so as to be flexible in a radial direction relative to the axis of rotation 10 in order to be able to slide on a surface of the drive member 2 when the latter is set in motion by the other flexible arm 41, 31, and rigid in a tangential direction relative to the axis of rotation 10 in order to be able to push the drive member 2 in rotation by cooperation of the corresponding pushing member 30, 40 and a support surface 21. Each transmission member 3, 4 thus acts like a ratchet, allowing the rotation of the drive member 2 relative to the transmission member 3, 4 in a first direction of rotation and blocking the rotation of the drive member 2 relative to the transmission member 3, 4 in a second direction of rotation opposite to the first as soon as the corresponding thrust member 30, 40 comes into contact with a bearing surface 21 of the drive member 2. Each flexible arm 31, 41 comprises for example a rigid base mounted in rotation on the axis of rotation 10 and extending essentially radially from the axis of rotation 10, and an elongated part extending from the end of the rigid base essentially in an arc relative to the axis of rotation 10 and flexible in a radial direction relative to the axis of rotation 10.
Selon cette forme d’exécution, l’organe d’entraînement 2 comprend de préférence une pluralité de surfaces d’appui 21 destinées à coopérer avec les organes de poussée 30, 40 pour la mise en rotation de l’organe d’entraînement 2. Les surfaces d’appui 21 sont par exemple formées par des encoches intérieures pratiquées sur un anneau 20 de l’organe d’entraînement 2. L’anneau 20 est par exemple situé en saillie sur la planche de la roue dentée 2. L’anneau 20 est par exemple formé d’un seul bloc avec l’organe d’entraînement 2 ou fixé, par exemple soudé, sur l’organe d’entraînement 2. Les encoches sont de préférence uniformément réparties sur la circonférence intérieure de l’anneau 20. Dans le cas illustré, les encoches sont au nombre de cinq séparées chacune de 72°. According to this embodiment, the drive member 2 preferably comprises a plurality of bearing surfaces 21 intended to cooperate with the thrust members 30, 40 for rotating the drive member 2. The bearing surfaces 21 are for example formed by interior notches made on a ring 20 of the drive member 2. The ring 20 is for example located projecting on the board of the toothed wheel 2. The ring 20 is for example formed in one piece with the drive member 2 or fixed, for example welded, to the drive member 2. The notches are preferably uniformly distributed over the inner circumference of the ring 20 In the case illustrated, there are five notches, each separated by 72°.
De préférence, les organes de transmission 3, 4 sont configurés pour être actionnés indépendamment l’un de l’autre. Un premier organe de transmission 3 des deux organes de transmission 3, 4 est par exemple destiné à être actionné par un mouvement horloger, par exemple par le mouvement horloger d’une pièce d’horlogerie dans laquelle le dispositif d’entraînement 1 et le mécanisme horloger entraîné par le dispositif d’entraînement 1 sont intégrés. Un deuxième organe de transmission 4 des deux organes de transmission 3, 4 est par exemple destiné à être actionné par un mécanisme de commande actionnable à la demande par un utilisateur de la pièce d’horlogerie, au moyen par exemple d’un bouton ou de tout autre actionneur approprié situé sur le boîtier de la pièce d’horlogerie. Preferably, the transmission members 3, 4 are configured to be actuated independently of each other. A first transmission member 3 of the two transmission members 3, 4 is for example intended to be actuated by a watch movement, for example by the watch movement of a timepiece in which the drive device 1 and the mechanism watchmaker driven by the drive device 1 are integrated. A second transmission member 4 of the two transmission members 3, 4 is for example intended to be actuated by a control mechanism operable on demand by a user of the timepiece, for example by means of a button or any other suitable actuator located on the case of the timepiece.
En référence à la figure 2, le premier organe de transmission 3 comprend par exemple un pignon 32 solidaire en rotation du bras flexible 31 du premier organe de transmission 3. Le pignon 32 engrène par exemple avec un premier râteau 39 destiné à être entraîné par un mouvement horloger. Lorsque le dispositif d’entraînement 1 est intégré dans une pièce d’horlogerie, la marche du mouvement horloger de la pièce d’horlogerie entraîne par exemple le premier râteau 39 dans un mouvement d’armage en rotation dans le sens horaire contre la force d’un premier ressort 38, par exemple une première lame ressort. La rotation en sens horaire du premier râteau 39 entraîne la rotation en sens antihoraire du premier organe de transmission 3. Le premier ressort 38 exerce sur le premier râteau 39 une force élastique tendant à le ramener en sens antihoraire dans une première position du premier râteau 39, typiquement une position de repos, qui correspond à une première position du premier organe de transmission 3. À un moment déterminé par le mouvement horloger, le premier râteau 39 qui a atteint une deuxième position correspondant à une deuxième position du premier organe de transmission 3, typiquement une position d’armage, est relâché par le mouvement horloger et revient en sens antihoraire dans sa position de repos sous l’effet du premier ressort 38. Ce faisant, il entraîne le premier organe de transmission 3 en sens horaire sur au moins une fraction de tour. Comme expliqué plus en détails plus bas, au cours de ce mouvement de retour du premier râteau 39, l’organe de poussée 30 du premier organe de transmission 3 entre en appui contre une surface d’appui 21 de l’organe d’entraînement 2 et le pousse en rotation sur une fraction de tour correspondant de préférence à un cycle, par exemple un cycle d’animation, d’affichage et/ou de sonnerie, du mécanisme horloger entraîné par le dispositif d’entraînement 1 . With reference to Figure 2, the first transmission member 3 comprises for example a pinion 32 integral in rotation with the flexible arm 31 of the first transmission member 3. The pinion 32 meshes for example with a first rake 39 intended to be driven by a watch movement. When the drive device 1 is integrated into a timepiece, the running of the watch movement of the timepiece drives for example the first rake 39 in a clockwise rotating winding movement against the force of a first spring 38, for example a first leaf spring. The clockwise rotation of the first rake 39 causes the counterclockwise rotation of the first transmission member 3. The first spring 38 exerts on the first rake 39 an elastic force tending to bring it counterclockwise into a first position of the first rake 39 , typically a rest position, which corresponds to a first position of the first transmission member 3. At a moment determined by the watch movement, the first rake 39 which has reached a second position corresponding to a second position of the first transmission member 3 , typically a winding position, is released by the watch movement and returns counterclockwise to its rest position under the effect of the first spring 38. In doing so, it drives the first transmission member 3 clockwise for at least a fraction of a turn. As explained in more detail below, during this return movement of the first rake 39, the thrust member 30 of the first transmission member 3 comes into contact with a bearing surface 21 of the drive member 2 and pushes it into rotation over a fraction of a revolution preferably corresponding to a cycle, for example an animation, display and/or ringing cycle, of the watch mechanism driven by the drive device 1.
Le deuxième organe de transmission 4 comprend par exemple un râteau 42 solidaire en rotation du bras flexible 41 du deuxième organe de transmission 4. Le râteau 42 engrène par exemple avec un deuxième râteau 49 destiné à être entraîné par un mécanisme de commande à la demande. Lorsqu’un utilisateur de la pièce d’horlogerie dans lequel le dispositif d’entraînement est intégré actionne le mécanisme de commande, par exemple en appuyant sur un bouton de la pièce d’horlogerie, le deuxième râteau 49 est entraîné dans un mouvement d’armage en rotation dans le sens horaire contre la force d’un deuxième ressort 48, par exemple une deuxième lame ressort. La rotation en sens horaire du premier râteau 39 entraîne la rotation en sens antihoraire du premier organe de transmission 3. Le premier ressort 38 exerce sur le deuxième râteau 49 une force élastique tendant à le ramener en sens antihoraire dans une première position du deuxième râteau 49, typiquement une position de repos, qui correspond à une première position du deuxième organe de transmission 4. Par exemple lorsque l’utilisateur relâche le bouton et/ou lorsque le bouton a parcouru une course prédéterminée, le deuxième râteau 49 qui a atteint une deuxième position correspondant à une deuxième position du deuxième organe de transmission 4, typiquement une position d’armage, est relâché par le mécanisme de commande manuelle et revient dans sa position de repos en sens antihoraire sous l’effet du deuxième ressort 48. Ce faisant, il entraîne le deuxième organe de transmission 4 en sens horaire sur au moins une fraction de tour. Comme expliqué plus en détails plus bas, au cours de ce mouvement de retour du deuxième râteau 49, l’organe de poussée 40 du deuxième organe de transmission 4 entre en appui contre une surface d’appui 21 de l’organe d’entraînement 2 et le pousse en rotation sur une fraction de tour correspondant de préférence à un cycle, par exemple un cycle d’animation, d’affichage et/ou de sonnerie, du mécanisme horloger entraîné par le dispositif d’entraînement 1. The second transmission member 4 comprises for example a rake 42 integral in rotation with the flexible arm 41 of the second transmission member 4. The rake 42 meshes for example with a second rake 49 intended to be driven by an on-demand control mechanism. When a user of the timepiece in which the drive device is integrated activates the control mechanism, for example by pressing a button on the timepiece, the second rake 49 is driven in a movement of arming in rotation in the clockwise direction against the force of a second spring 48, for example a second leaf spring. The clockwise rotation of the first rake 39 causes the counterclockwise rotation of the first member of transmission 3. The first spring 38 exerts on the second rake 49 an elastic force tending to bring it counterclockwise into a first position of the second rake 49, typically a rest position, which corresponds to a first position of the second transmission member 4 For example when the user releases the button and/or when the button has traveled a predetermined distance, the second rake 49 which has reached a second position corresponding to a second position of the second transmission member 4, typically a cocking position. , is released by the manual control mechanism and returns to its rest position counterclockwise under the effect of the second spring 48. In doing so, it drives the second transmission member 4 clockwise over at least a fraction of a turn. As explained in more detail below, during this return movement of the second rake 49, the thrust member 40 of the second transmission member 4 comes into contact with a bearing surface 21 of the drive member 2 and pushes it into rotation over a fraction of a revolution preferably corresponding to a cycle, for example an animation, display and/or ringing cycle, of the watch mechanism driven by the drive device 1.
Selon la forme d’exécution illustrée, à chaque mouvement de retour du premier râteau 39 ou du deuxième râteau 49, l’organe d’entraînement 2 est entraîné en rotation par l’organe de transmission 3, 4 correspondant sur une fraction de tour déterminée, par exemple un cinquième de tour, soit 72 degrés. Cette fraction de tour correspond à un pas de l’organe d’entraînement 2 qui correspond de préférence au pas angulaire entre deux surfaces d’appui 21 adjacentes de l’organe d’entraînement 2, ou à un multiple de ce dernier. According to the illustrated embodiment, at each return movement of the first rake 39 or the second rake 49, the drive member 2 is rotated by the corresponding transmission member 3, 4 over a determined fraction of a turn , for example a fifth of a turn, or 72 degrees. This fraction of a turn corresponds to a pitch of the drive member 2 which preferably corresponds to the angular pitch between two adjacent bearing surfaces 21 of the drive member 2, or to a multiple of the latter.
Les figures 3 à 7 illustrent le mouvement d’armage du premier organe de transmission 3 et la rotation de l’organe d’entraînement 2 lors du mouvement de retour du premier organe de transmission 3. Figures 3 to 7 illustrate the winding movement of the first transmission member 3 and the rotation of the drive member 2 during the return movement of the first transmission member 3.
Par rapport à une première position, typiquement une position de repos, des premier et deuxième organes de transmission 3, 4 illustrée à la figure 1 , la figure 3 montre le premier organe de transmission 3 partiellement armé, typiquement entre deux activations au passage du mécanisme horloger entraîné par le dispositif d’entraînement 1. Au cours du mouvement d’armage du premier organe de transmission 3, le deuxième organe de transmission 4 et l’organe d’entraînement 2 sont immobiles, tant que le mécanisme de commande du deuxième organe de transmission 4 n’est pas activé par un utilisateur. Comme expliqué précédemment, le premier organe de transmission 3 est entraîné dans le sens antihoraire de préférence par le mouvement horloger de la pièce d’horlogerie dans laquelle le dispositif d’entraînement 1 est intégré. La vitesse de rotation du premier organe de transmission 3 au cours du mouvement d’armage est déterminée par une configuration adéquate de la chaîne cinématique liant le premier organe de transmission 3 au mouvement horloger, en fonction par exemple de la périodicité à laquelle le mécanisme horloger doit être activé, par exemple toutes les 15 minutes, une fois par heure, une ou deux fois par jour, etc. Au cours du mouvement d’armage, l’organe de poussée 30 du premier organe de transmission 3 glisse le long de la périphérie intérieure de l’anneau 20 avec une force de frottement déterminée par la flexibilité de son bras flexible 31 . With respect to a first position, typically a rest position, of the first and second transmission members 3, 4 illustrated in Figure 1, the Figure 3 shows the first transmission member 3 partially armed, typically between two activations when the watch mechanism driven by the drive device 1 passes. During the winding movement of the first transmission member 3, the second transmission member 4 and the drive member 2 are immobile, as long as the control mechanism of the second transmission member 4 is not activated by a user. As explained previously, the first transmission member 3 is driven in the counterclockwise direction preferably by the watch movement of the timepiece in which the drive device 1 is integrated. The rotation speed of the first transmission member 3 during the winding movement is determined by an appropriate configuration of the kinematic chain linking the first transmission member 3 to the watch movement, depending for example on the periodicity at which the watch mechanism should be activated, for example every 15 minutes, once an hour, once or twice a day, etc. During the cocking movement, the thrust member 30 of the first transmission member 3 slides along the inner periphery of the ring 20 with a friction force determined by the flexibility of its flexible arm 31.
La figure 4 montre le premier organe de transmission 3 en cours d’armage juste avant que son organe de poussée 30 ne retombe dans la prochaine encoche de l’anneau 20 sous l’effet de la force élastique de son bras flexible 31 . La figure 5 montre une deuxième position du premier organe de transmission 3 à la fin du mouvement d’armage, typiquement une position d’armage. De préférence, le déplacement angulaire du premier organe de transmission 3 au cours du mouvement d’armage est plus grand que le pas angulaire entre deux encoches de l’organe d’entraînement 2 afin d’assurer que l’organe de poussée 30 soit passé outre la prochaine encoche à la fin du mouvement d’armage, comme illustré à la figure 4. Dans la forme d’exécution illustrée, par exemple, les encoches étant au nombre de cinq, le pas angulaire entre elles est de 72°. Le premier organe de transmission 3 est ainsi tourné d’un angle supérieur à 72° au cours du mouvement d’armage, de préférence d’un angle supérieur à 80°, par exemple d’un angle de 90°. Figure 4 shows the first transmission member 3 being armed just before its thrust member 30 falls back into the next notch of the ring 20 under the effect of the elastic force of its flexible arm 31. Figure 5 shows a second position of the first transmission member 3 at the end of the winding movement, typically a winding position. Preferably, the angular displacement of the first transmission member 3 during the winding movement is greater than the angular pitch between two notches of the drive member 2 in order to ensure that the thrust member 30 is passed in addition to the next notch at the end of the cocking movement, as illustrated in Figure 4. In the embodiment illustrated, for example, the notches being five in number, the angular step between them is 72°. The first transmission member 3 is thus rotated by an angle greater than 72° during the movement arming, preferably at an angle greater than 80°, for example at an angle of 90°.
À un instant déterminé par le mouvement horloger, le premier organe de transmission 3 armé est relâché et tend à retourner en sens horaire, de la deuxième position, typiquement la position d’armage, dans la première position, typiquement la position de repos illustrée à la figure 1 sous l’effet du premier ressort 38. Au cours du mouvement de retour du premier organe de transmission 3, l’organe de poussée 30 du premier organe de transmission 3 s’insère dans la prochaine encoche de l’anneau 20, comme illustré à la figure 6, et pousse contre la surface d’appui 21 correspondante pour mettre l’organe d’entraînement 2 en mouvement dans le sens horaire, comme illustré à la figure 7. Durant ce mouvement de rotation de l’organe d’entraînement 2 sous l’effet du premier organe de transmission 3, l’organe de poussée 40 du deuxième organe de transmission 4 glisse sur la circonférence intérieure de l’anneau 20 avec une force déterminée par la flexibilité du bras flexible 41 du deuxième organe de transmission 4, ainsi que par la nature et l’état de surface des matériaux utilisés pour la fabrication du bras flexible 41 et de l’anneau 20, sans empêcher cette rotation. A la fin du mouvement de retour du premier organe de transmission 3, l’organe d’entraînement 2 a été tourné d’un angle correspondant au pas angulaire entre deux surfaces d’appui 21 , par exemple un cinquième de tour, et le premier organe d’entraînement 3 se retrouve dans la position de repos qu’il avait à la figure 1. At an instant determined by the watch movement, the first armed transmission member 3 is released and tends to return clockwise, from the second position, typically the winding position, to the first position, typically the rest position illustrated in Figure 1 under the effect of the first spring 38. During the return movement of the first transmission member 3, the thrust member 30 of the first transmission member 3 is inserted into the next notch of the ring 20, as illustrated in Figure 6, and pushes against the corresponding support surface 21 to put the drive member 2 in movement in the clockwise direction, as illustrated in Figure 7. During this rotational movement of the member d drive 2 under the effect of the first transmission member 3, the thrust member 40 of the second transmission member 4 slides on the inner circumference of the ring 20 with a force determined by the flexibility of the flexible arm 41 of the second member transmission 4, as well as by the nature and surface condition of the materials used for the manufacture of the flexible arm 41 and the ring 20, without preventing this rotation. At the end of the return movement of the first transmission member 3, the drive member 2 has been rotated by an angle corresponding to the angular pitch between two bearing surfaces 21, for example a fifth of a turn, and the first drive member 3 finds itself in the rest position it had in Figure 1.
Les figures 8 à 11 illustrent l’activation de l’organe d’entraînement 2 par le deuxième organe de transmission 4, par exemple une activation à la demande entre deux activations au passage par le premier organe de transmission 3. La figure 8 montre un exemple de position de départ dans laquelle le premier organe de transmission 3 est partiellement armé et le deuxième organe de transmission 4 est dans une première position, typiquement sa position de repos. Dans un premier temps, le deuxième organe de transmission 4 est armé, par exemple par l’intermédiaire d’un mécanisme de commande manuelle actionné à l’aide d’un bouton de la pièce d’horlogerie accessible par un utilisateur. Au cours du mouvement d’armage, le deuxième organe de transmission 4 est entraîné en sens antihoraire et l’organe de poussée 40 du deuxième organe de transmission 4 glisse contre la périphérie intérieure de l’anneau 20 jusqu’à ce qu’il passe outre la prochaine encoche. Le déplacement angulaire du deuxième organe de transmission 4 au cours du mouvement d’armage est de préférence plus grand que le pas angulaire entre deux encoches de l’organe d’entraînement 2 afin d’assurer que l’organe de poussée 40 soit passé outre la prochaine encoche à la fin du mouvement d’armage, comme illustré à la figure 9. Dans la forme d’exécution illustrée, par exemple, le deuxième organe de transmission 4 est tourné d’un angle supérieur à 72° au cours du mouvement d’armage, de préférence d’un angle supérieur à 80°, par exemple d’un angle de 90°. Une fois armé, dans une deuxième position illustrée à la figure 9, typiquement une position d’armage, le deuxième organe de transmission 4 est relâché et tend à revenir en sens horaire, de sa deuxième position, typiquement sa position d’armage, dans sa première position, typiquement sa position de repos, sous l’effet du deuxième ressort 48. Au cours du mouvement de retour du deuxième organe de transmission 4, l’organe de poussée 40 du deuxième organe de transmission 4 s’insère dans la prochaine encoche de l’anneau 20, comme illustré à la figure 10, et pousse contre la surface d’appui 21 correspondante pour mettre l’organe d’entraînement 2 en mouvement dans le sens horaire, comme illustré à la figure 11 . Durant ce mouvement de rotation de l’organe d’entraînement 2 sous l’effet du deuxième organe de transmission 4, l’organe de poussée 30 du premier organe de transmission 3 glisse sur la circonférence intérieure de l’anneau 20 avec une force déterminée par la flexibilité du bras flexible 31 du premier organe de transmission 3, ainsi que par la nature et l’état de surface des matériaux utilisés pour la fabrication du bras flexible 31 et de l’anneau 20, sans empêcher cette rotation. A la fin du mouvement de retour du deuxième organe de transmission 4, l’organe d’entraînement 2 a été tourné d’un angle correspondant au pas angulaire entre deux surfaces d’appui 21 , par exemple un cinquième de tour, et le deuxième organe d’entraînement 4 se retrouve dans la position de repos qu’il avait par exemple à la figure 8. Figures 8 to 11 illustrate the activation of the drive member 2 by the second transmission member 4, for example activation on demand between two activations passing through the first transmission member 3. Figure 8 shows a example of a starting position in which the first transmission member 3 is partially armed and the second transmission member 4 is in a first position, typically its rest position. Firstly, the second transmission member 4 is armed, for example by via a manual control mechanism operated using a button on the timepiece accessible by a user. During the winding movement, the second transmission member 4 is driven counterclockwise and the thrust member 40 of the second transmission member 4 slides against the inner periphery of the ring 20 until it passes besides the next notch. The angular displacement of the second transmission member 4 during the winding movement is preferably greater than the angular pitch between two notches of the drive member 2 in order to ensure that the thrust member 40 is bypassed the next notch at the end of the cocking movement, as illustrated in Figure 9. In the embodiment illustrated, for example, the second transmission member 4 is rotated by an angle greater than 72° during the movement arming, preferably at an angle greater than 80°, for example at an angle of 90°. Once armed, in a second position illustrated in Figure 9, typically an arming position, the second transmission member 4 is released and tends to return clockwise, from its second position, typically its arming position, in its first position, typically its rest position, under the effect of the second spring 48. During the return movement of the second transmission member 4, the thrust member 40 of the second transmission member 4 is inserted into the next notch of the ring 20, as illustrated in figure 10, and pushes against the corresponding bearing surface 21 to put the drive member 2 in movement in the clockwise direction, as illustrated in figure 11. During this rotational movement of the drive member 2 under the effect of the second transmission member 4, the thrust member 30 of the first transmission member 3 slides on the inner circumference of the ring 20 with a determined force by the flexibility of the flexible arm 31 of the first transmission member 3, as well as by the nature and surface condition of the materials used for the manufacture of the flexible arm 31 and the ring 20, without preventing this rotation. At the end of the return movement of the second transmission member 4, the drive member 2 has been rotated by an angle corresponding to the angular pitch between two bearing surfaces 21, for example a fifth of a turn, and the second drive member 4 finds itself in the rest position that he had for example in figure 8.
Comme illustré à la figure 2, le bras flexible 31 du premier organe de transmission 3 se situe de préférence dans un autre plan que le bras flexible 41 du deuxième organe de transmission 4, permettant ainsi le déplacement de chaque organe de transmission 3, 4 indépendamment l’un de l’autre, sans risque de collision. As illustrated in Figure 2, the flexible arm 31 of the first transmission member 3 is preferably located in another plane than the flexible arm 41 of the second transmission member 4, thus allowing the movement of each transmission member 3, 4 independently from each other, without risk of collision.
De manière préférentielle, et en référence à la figure 12, le dispositif d’entraînement 1 de l’invention comprend en outre un mécanisme de désactivation permettant de désactiver le premier organe de transmission 3 afin de permettre par exemple de mettre à l’heure la pièce d’horlogerie dans laquelle le dispositif d’entraînement 1 est intégré sans risque d’endommagement du dispositif d’entraînement ou de déclenchement par le premier organe de transmission 3. Le mécanisme de désactivation est par exemple actionné automatiquement lors de la mise à mise à l’heure de la pièce d’horlogerie, par exemple par l’intermédiaire de la tige de couronne non représentée. Alternativement ou additionnellement, le mécanisme de désactivation est actionnable à la demande, par exemple pour permettre à l’utilisateur de la pièce d’horlogerie de désactiver temporairement l’activation au passage du mécanisme horloger entraîné par le dispositif d’entraînement 1 de l’invention. Cela permet par exemple à un utilisateur de désactiver pour un temps l’animation, l’affichage et/ou la sonnerie correspondants de la pièce d’horlogerie. L’actionnement à la demande du mécanisme de désactivation 5 se fait par exemple à l’aide d’un bouton, par exemple un bouton « on/off » de la pièce d’horlogerie accessible par l’utilisateur. Preferably, and with reference to Figure 12, the drive device 1 of the invention further comprises a deactivation mechanism making it possible to deactivate the first transmission member 3 in order to allow, for example, setting the time timepiece in which the drive device 1 is integrated without risk of damage to the drive device or triggering by the first transmission member 3. The deactivation mechanism is for example activated automatically when it is activated. to the time of the timepiece, for example via the crown stem not shown. Alternatively or additionally, the deactivation mechanism can be activated on demand, for example to allow the user of the timepiece to temporarily deactivate the activation of the watch mechanism driven by the drive device 1 of the invention. This allows, for example, a user to deactivate for a time the corresponding animation, display and/or ringing of the timepiece. Actuation on demand of the deactivation mechanism 5 is done for example using a button, for example an “on/off” button on the timepiece accessible by the user.
Selon la forme d’exécution illustrée, le mécanisme de désactivation comprend un bras de désactivation 5 agissant sur le bras flexible 31 du premier organe de transmission 3, contre la force de rappel de ce dernier, pour écarter de l’anneau 20 l’organe de poussée 30 du premier organe de transmission 3 de sorte qu’il n’entre plus en contact avec les surfaces d’appui 21. Le bras de désactivation 5 agit sur le bras flexible 31 du premier organe de transmission 3 par exemple par l’intermédiaire d’une goupille 33 située de préférence à proximité de l’extrémité distale du bras flexible 31 , par exemple sur l’organe de poussée 30 correspondant. According to the illustrated embodiment, the deactivation mechanism comprises a deactivation arm 5 acting on the flexible arm 31 of the first transmission member 3, against the return force of the latter, to separate from the ring 20 the thrust member 30 of the first transmission member 3 so that it no longer comes into contact with the bearing surfaces 21. The deactivation arm 5 acts on the flexible arm 31 of the first deactivation member transmission 3 for example via a pin 33 preferably located near the distal end of the flexible arm 31, for example on the corresponding thrust member 30.
Selon la forme d’exécution illustrée, l’organe d’entraînement 2 comprend cinq surfaces d’appui 21 régulièrement réparties autour de l’axe de rotation 10 sur un diamètre de l’organe d’entraînement 2. D’autres formes d’exécution sont cependant possibles dans le cadre de l’invention. En particulier, le nombre de surfaces d’appui peut être différent, déterminé par exemple par le pas angulaire que l’organe d’entraînement doit effectuer pour entraîner le mécanisme horloger durant un cycle complet à chaque activation. La répartition des surfaces d’appui autour de l’axe de rotation peut également être irrégulière, si par exemple le mécanisme horloger entraîné par le dispositif d’entraînement est configuré pour effectuer une séquence de cycles, certains cycles de la séquence de cycles ayant une durée différente. According to the illustrated embodiment, the drive member 2 comprises five bearing surfaces 21 regularly distributed around the axis of rotation 10 over a diameter of the drive member 2. Other forms of execution execution are however possible within the framework of the invention. In particular, the number of supporting surfaces may be different, determined for example by the angular step that the drive member must take to drive the watch mechanism during a complete cycle at each activation. The distribution of the support surfaces around the axis of rotation can also be irregular, if for example the watch mechanism driven by the drive device is configured to carry out a sequence of cycles, certain cycles of the sequence of cycles having a different duration.
Il est également envisageable de configurer le dispositif d’entraînement de l’invention pour qu’à chaque activation de l’organe d’entraînement par le premier organe de transmission et/ou par le deuxième organe de transmission, l’organe d’entraînement soit tourné d’un pas qui est un multiple du pas angulaire entre deux surfaces d’appui adjacentes. It is also possible to configure the drive device of the invention so that each time the drive member is activated by the first transmission member and/or by the second transmission member, the drive member is rotated by a pitch which is a multiple of the angular pitch between two adjacent bearing surfaces.
Selon la forme d’exécution illustrée, les organes de transmission sont configurés pour mettre l’organe d’entraînement en rotation en sens horaire à chaque pas, chaque organe d’actionnement 3, 4 étant configuré pour tourner en sens antihoraire au cours du mouvement d’armage et en sens horaire au cours du mouvement de retour. Il est bien entendu envisageable dans le cadre de l’invention de configurer les organes de transmission pour mettre l’organe d’entraînement en rotation en sens antihoraire à chaque pas, chaque organe d’actionnement 3, 4 étant alors configuré pour tourner en sens horaire au cours du mouvement d’armage et en sens antihoraire au cours du mouvement de retour, l’orientation des surfaces d’appui de l’organe d’entraînement étant alors inversée par rapport à l’orientation des surfaces d’appui 21 de l’organe d’entraînement 2 illustré. According to the illustrated embodiment, the transmission members are configured to rotate the drive member clockwise at each step, each actuating member 3, 4 being configured to rotate counterclockwise during the movement cocking and clockwise during the return movement. It is of course possible in the context of the invention to configure the transmission members to rotate the drive member in a counterclockwise direction at each step, each member actuation 3, 4 then being configured to rotate clockwise during the cocking movement and counterclockwise during the return movement, the orientation of the bearing surfaces of the drive member then being reversed relative to the orientation of the bearing surfaces 21 of the drive member 2 illustrated.
Selon la forme d’exécution illustrée, les organes de transmission sont configurés pour pousser l’organe d’entraînement en rotation. D’autres formes d’exécution sont cependant possibles dans le cadre de l’invention. Il est par exemple possible d’envisager de configurer les organes de transmission pour tirer l’organe d’entraînement à l’aide d’un crochet coopérant avec des surfaces d’appui appropriées de l’organe d’entraînement. According to the embodiment illustrated, the transmission members are configured to push the drive member into rotation. Other forms of execution are however possible within the framework of the invention. It is for example possible to consider configuring the transmission members to pull the drive member using a hook cooperating with appropriate bearing surfaces of the drive member.
Selon la forme d’exécution illustrée, les organes de transmission transmettent à l’organe d’entraînement, pour le mettre en mouvement, l’énergie développée par un ressort et précédemment accumulée au cours de l’armage de l’organe de transmission correspondant, par exemple soit à l’aide d’un mouvement horloger, soit à l’aide d’un mécanisme de commande manuel. D’autres sources d’énergie sont cependant envisageables pour déplacer les organes de transmission. Il est par exemple envisageable qu’un organe de transmission soit directement entraîné dans un mouvement de va-et-vient, par exemple par un mouvement horloger au travers d’un système de débrayage approprié, par un levier manuel, etc. According to the illustrated embodiment, the transmission members transmit to the drive member, to set it in motion, the energy developed by a spring and previously accumulated during the winding of the corresponding transmission member , for example either using a watch movement or using a manual control mechanism. However, other sources of energy are possible to move the transmission elements. For example, it is possible for a transmission member to be directly driven in a back-and-forth movement, for example by a watch movement through an appropriate clutch release system, by a manual lever, etc.
Les éléments des chaînes cinématiques entre les organes de transmission et les sources d’énergie correspondantes peuvent aussi différer des râteaux et du pignon mis en œuvre dans la forme d’exécution illustrée. Ces chaînes cinématiques peuvent par exemple comprendre d’autres types d’engrenages et/ou d’autres formes d’éléments de transmission, par exemple des poulies ou tout autre composant approprié. The elements of the kinematic chains between the transmission members and the corresponding energy sources may also differ from the rakes and the pinion implemented in the illustrated embodiment. These kinematic chains may for example include other types of gears and/or other forms of transmission elements, for example pulleys or any other suitable component.
Le dispositif d’entraînement a été décrit plus haut avec deux organes de transmission agissant sur le même organe d’entraînement et actionnés par des moyens différents selon des critères différents. Le dispositif d’entraînement peut bien entendu comprendre, dans le cadre de l’invention, plus que deux organes de transmission configurés pour agir sur le même organe d’entraînement afin de le mettre en mouvement. Selon certaines formes d’exécution, par exemple, le dispositif d’entraînement comprend, outre le premier et le deuxième organes d’entraînement décrits plus haut, un troisième organe d’entraînement configuré pour mettre en mouvement l’organe d’entraînement de préférence selon encore d’autres critères. Le troisième organe d’entraînement est par exemple actionné par un mécanisme dédié suite à une sollicitation extérieure, par exemple une sollicitation environnementale telle qu’une variation de pression, une accélération, etc. The drive device was described above with two transmission members acting on the same drive member and actuated by different means according to different criteria. The drive device can of course comprise, in the context of the invention, more than two transmission members configured to act on the same drive member in order to set it in motion. According to certain embodiments, for example, the drive device comprises, in addition to the first and second drive members described above, a third drive member configured to set the drive member in motion preferably according to yet other criteria. The third drive member is for example actuated by a dedicated mechanism following an external request, for example an environmental request such as a variation in pressure, acceleration, etc.

Claims

Revendications Claims
1 . Dispositif d’entraînement (1 ) pour mécanisme horloger, comprenant : 1. Driving device (1) for a watch mechanism, comprising:
- un organe d’entraînement (2) monté mobile en rotation autour d’un axe de rotation (10) et configuré pour entraîner un mécanisme horloger, l’organe d’entraînement (2) comprenant une pluralité de surfaces d’appui (21) ; - a drive member (2) mounted to move in rotation around an axis of rotation (10) and configured to drive a watch mechanism, the drive member (2) comprising a plurality of bearing surfaces (21) ) ;
- un premier organe de transmission (3) déplaçable dans un mouvement d’armage d’une première position du premier organe de transmission (3) à une deuxième position du premier organe de transmission (3) et dans un mouvement de retour de la deuxième position du premier organe de transmission (3) à la première position du premier organe de transmission (3) ; - a first transmission member (3) movable in a winding movement from a first position of the first transmission member (3) to a second position of the first transmission member (3) and in a return movement of the second position of the first transmission member (3) to the first position of the first transmission member (3);
- un deuxième organe de transmission (4) déplaçable dans un mouvement d’armage d’une première position du deuxième organe de transmission (4) à une deuxième position du deuxième organe de transmission (4) et dans un mouvement de retour de la deuxième position du deuxième organe de transmission (4) à la première position du deuxième organe de transmission (4) ; chaque organe de transmission (3 ;4) étant configuré pour, au cours de son mouvement de retour de sa deuxième position à sa première position, entraîner l’organe d’entraînement (2) en rotation par coopération avec une surface d’appui (21 ) de la pluralité de surfaces d’appui (21 ) ; le deuxième organe de transmission (4) étant configuré pour ne pas bloquer la rotation du dispositif d’entraînement (2) lorsque le premier organe de transmission (3) entraîne l’organe d’entraînement (2) et le premier organe de transmission (3) étant configuré pour ne pas bloquer la rotation de l’organe d’entraînement (2) lorsque le deuxième organe de transmission (4) entraîne l’organe d’entraînement (2). - a second transmission member (4) movable in a winding movement from a first position of the second transmission member (4) to a second position of the second transmission member (4) and in a return movement of the second position of the second transmission member (4) to the first position of the second transmission member (4); each transmission member (3; 4) being configured to, during its return movement from its second position to its first position, drive the drive member (2) in rotation by cooperation with a support surface ( 21) of the plurality of support surfaces (21); the second transmission member (4) being configured so as not to block the rotation of the drive device (2) when the first transmission member (3) drives the drive member (2) and the first transmission member ( 3) being configured so as not to block the rotation of the drive member (2) when the second transmission member (4) drives the drive member (2).
2. Dispositif d’entraînement (1) selon la revendication précédente, le premier organe de transmission (3) et le deuxième organe de transmission (4) étant montés mobiles en rotation autour de l’axe de rotation (10) et tournant dans un sens de rotation au cours du mouvement d’armage et dans le sens de rotation inverse au cours du mouvement de retour. 2. Drive device (1) according to the preceding claim, the first transmission member (3) and the second transmission member (4) being mounted movable in rotation around the axis of rotation (10) and rotating in one direction of rotation during the cocking movement and in the opposite direction of rotation during the return movement.
3. Dispositif d’entraînement (1 ) selon la revendication précédente, dans laquelle le premier organe de transmission (3) et le deuxième organe de transmission (4) comprennent chacun un organe de poussée (30, 40) pour coopérer avec les surfaces d’appui (21 ) de la pluralité de surfaces d’appui (21 ) pour pousser l’organe d’entraînement (2) en rotation, chaque organe de poussée (30, 40) étant situé à l’extrémité distale d’un bras flexible (30, 40), l’extrémité proximale de chacun desdits bras flexibles (30, 40) étant montée en rotation autour de l’axe de rotation (10). 3. Drive device (1) according to the preceding claim, in which the first transmission member (3) and the second transmission member (4) each comprise a thrust member (30, 40) to cooperate with the surfaces of support (21) of the plurality of support surfaces (21) to push the drive member (2) in rotation, each pushing member (30, 40) being located at the distal end of an arm flexible (30, 40), the proximal end of each of said flexible arms (30, 40) being mounted to rotate around the axis of rotation (10).
4. Dispositif d’entraînement (1 ) selon l’une des revendications précédentes, comprenant en outre un premier ressort (38) pour déplacer le premier organe de transmission (3) dans son mouvement de retour de sa deuxième position à sa première position et un deuxième ressort (48) pour déplacer le deuxième organe de transmission (4) dans son mouvement de retour de sa deuxième position à sa première position. 4. Drive device (1) according to one of the preceding claims, further comprising a first spring (38) for moving the first transmission member (3) in its return movement from its second position to its first position and a second spring (48) for moving the second transmission member (4) in its return movement from its second position to its first position.
5. Dispositif d’entraînement (1) selon la revendication précédente, le premier ressort (38) et le deuxième ressort (48) étant configurés pour être armés au cours du mouvement d’armage de l’organe de transmission (3, 4) respectif. 5. Drive device (1) according to the preceding claim, the first spring (38) and the second spring (48) being configured to be armed during the winding movement of the transmission member (3, 4) respective.
6. Dispositif d’entraînement (1 ) selon l’une des revendications précédentes, dans lequel l’organe d’entraînement (2) comprend une denture. 6. Drive device (1) according to one of the preceding claims, wherein the drive member (2) comprises teeth.
7. Dispositif d’entraînement (1 ) selon l’une des revendications précédentes, dans lequel les surfaces d’appui (21 ) de la pluralité de surfaces d’appui (21 ) sont régulièrement réparties autour de l’axe de rotation (10) sur un diamètre de l’organe d’entraînement (2). 7. Drive device (1) according to one of the preceding claims, wherein the bearing surfaces (21) of the plurality of bearing surfaces (21) are regularly distributed around the axis of rotation (10). ) on a diameter of the drive member (2).
8. Dispositif d’entraînement (1 ) selon la revendication précédente, dans lequel les surfaces d’appui (21 ) de la pluralité de surfaces d’appui sont formées sur une périphérie intérieure d’un anneau (20) de l’organe d’entraînement (2), l’anneau (20) étant préférentiellement située en saillie sur une planche de l’organe d’entraînement. 8. Drive device (1) according to the preceding claim, wherein the bearing surfaces (21) of the plurality of bearing surfaces are formed on an inner periphery of a ring (20) of the member of drive (2), the ring (20) being preferably located projecting on a board of the drive member.
9. Dispositif d’entraînement (1 ) selon l’une des revendications précédentes, comprenant un mécanisme de désactivation (5) permettant de découpler le premier organe de transmission (3) de l’organe d’entraînement (2). 9. Drive device (1) according to one of the preceding claims, comprising a deactivation mechanism (5) making it possible to decouple the first transmission member (3) from the drive member (2).
10. Pièce d’horlogerie comprenant un mouvement horloger et un dispositif d’entraînement (1 ) selon l’une des revendications précédentes, dans laquelle le premier organe de transmission (3) est déplacé dans son mouvement d’armage de sa première position à sa deuxième position par le mouvement horloger et le deuxième organe de transmission (4) est configuré pour être déplacé dans son mouvement d’armage de sa première position à sa deuxième position par un mécanisme de commande manuelle. 10. Timepiece comprising a watch movement and a drive device (1) according to one of the preceding claims, in which the first transmission member (3) is moved in its winding movement from its first position to its second position by the watch movement and the second transmission member (4) is configured to be moved in its winding movement from its first position to its second position by a manual control mechanism.
11. Pièce d’horlogerie selon la revendication précédente, dans laquelle le mécanisme de désactivation (5) est actionné automatiquement lorsque le mouvement horloger est en mesure de recevoir une opération de mise à l’heure. 11. Timepiece according to the preceding claim, in which the deactivation mechanism (5) is activated automatically when the watch movement is able to receive a time setting operation.
12. Pièce d’horlogerie selon l’une des revendications 10 et 11 , dans laquelle le mécanisme de désactivation (5) est actionnable à la demande par un utilisateur. 12. Timepiece according to one of claims 10 and 11, in which the deactivation mechanism (5) can be activated on request by a user.
PCT/IB2023/057697 2022-11-04 2023-07-28 Drive device for a clockwork mechanism WO2024095067A1 (en)

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CH001313/2022A CH720202A1 (en) 2022-11-04 2022-11-04 Driving device for watch mechanism
CHCH001313/2022 2022-11-04

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Citations (5)

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JPS6138585U (en) * 1984-08-10 1986-03-11 中川電化産業株式会社 Ratchet mechanism
CH705304A2 (en) * 2011-07-22 2013-01-31 Manuf Et Fabrique De Montres Et Chronometres Ulysse Nardin Le Locle S A Drive mechanism for driving driven wheel in direction of rotation in timepiece, has levers and eccentric for generating translational motion, where levers and eccentric are arranged such that levers drive driven wheel sequentially
EP2634650A2 (en) * 2012-02-29 2013-09-04 Richemont International S.A. Bi-directional automatic winding mechanism for a clock movement
EP3701336B1 (en) * 2017-10-24 2021-12-01 Richemont International SA Correction device for a timepiece
EP4071560A1 (en) * 2021-04-07 2022-10-12 Patek Philippe SA Genève Timepiece with repetition and alarm

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Publication number Priority date Publication date Assignee Title
CH709152B1 (en) * 2014-01-16 2019-02-28 Richemont Int Sa Timepiece comprising a striking mechanism.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6138585U (en) * 1984-08-10 1986-03-11 中川電化産業株式会社 Ratchet mechanism
CH705304A2 (en) * 2011-07-22 2013-01-31 Manuf Et Fabrique De Montres Et Chronometres Ulysse Nardin Le Locle S A Drive mechanism for driving driven wheel in direction of rotation in timepiece, has levers and eccentric for generating translational motion, where levers and eccentric are arranged such that levers drive driven wheel sequentially
EP2634650A2 (en) * 2012-02-29 2013-09-04 Richemont International S.A. Bi-directional automatic winding mechanism for a clock movement
EP3701336B1 (en) * 2017-10-24 2021-12-01 Richemont International SA Correction device for a timepiece
EP4071560A1 (en) * 2021-04-07 2022-10-12 Patek Philippe SA Genève Timepiece with repetition and alarm

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