EP3904963B1 - Timepiece movement comprising an auxiliary mechanism driven by an auxiliary power source - Google Patents

Timepiece movement comprising an auxiliary mechanism driven by an auxiliary power source Download PDF

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Publication number
EP3904963B1
EP3904963B1 EP20171995.2A EP20171995A EP3904963B1 EP 3904963 B1 EP3904963 B1 EP 3904963B1 EP 20171995 A EP20171995 A EP 20171995A EP 3904963 B1 EP3904963 B1 EP 3904963B1
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EP
European Patent Office
Prior art keywords
triggering
lever
power source
auxiliary
auxiliary power
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
EP20171995.2A
Other languages
German (de)
French (fr)
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EP3904963A1 (en
Inventor
Cédric Mentzer
Nicolas SCHLAPPI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Patek Philippe SA Geneve
Original Assignee
Patek Philippe SA Geneve
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Application filed by Patek Philippe SA Geneve filed Critical Patek Philippe SA Geneve
Priority to EP20171995.2A priority Critical patent/EP3904963B1/en
Publication of EP3904963A1 publication Critical patent/EP3904963A1/en
Application granted granted Critical
Publication of EP3904963B1 publication Critical patent/EP3904963B1/en
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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F3/00—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeters with clockwork
    • G04F3/02—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeters with clockwork with mechanical driving mechanisms
    • G04F3/04—Additional arrangements in connection with ordinary non-electric clocks for this purpose
    • 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
    • G04B1/00—Driving mechanisms
    • G04B1/10—Driving mechanisms with mainspring
    • G04B1/12—Driving mechanisms with mainspring with several mainsprings
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/02—Back-gearing arrangements between gear train and hands
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/20—Indicating by numbered bands, drums, discs, or sheets
    • G04B19/202—Indicating by numbered bands, drums, discs, or sheets by means of turning discs
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
    • G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
    • G04F7/08—Watches or clocks with stop devices, e.g. chronograph
    • G04F7/0866—Special arrangements
    • G04F7/089—Special arrangements indicating measured time by other than hands, e.g. numbered bands, drums, discs or sheet
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
    • G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
    • G04F7/08—Watches or clocks with stop devices, e.g. chronograph
    • G04F7/0866—Special arrangements
    • G04F7/0895—Special arrangements with a separate barrel for the chronograph functions

Definitions

  • the present invention relates to a watch movement comprising a main energy source, an auxiliary energy source kinematically linked to an auxiliary mechanism via an auxiliary drive train, a mechanism for locking the energy source auxiliary arranged to move between a locked position in which it blocks the auxiliary power source and an unlocked position in which it allows the auxiliary power source to rotate, a trigger mechanism of said locking mechanism arranged to move between a first position of rest and a maximum second position, and to cooperate with the locking mechanism to drive it from its locked position to its unlocked position when it passes from its first position to its second position, and at least one control wheel set driven by said main power source and arranged to cooperate with the trigger mechanism to enable s passing from its first position to its second position when said auxiliary mechanism must be driven by said auxiliary power source.
  • the auxiliary mechanism is a display device of a chronograph mechanism comprising a display disc, a display gear train of which a moving body carries said display disc, an auxiliary energy source kinematically connected to said display train and control means of the display train arranged so as to control its drive by the auxiliary energy source when the information to be displayed must be modified.
  • control means comprise a trigger mechanism comprising a lever engaged with the toothing of a control wheel belonging to the chronograph train and powered by the main energy source of the movement when the chronograph mechanism is engaged.
  • the lever is arranged to cooperate with a regulation system connected to the auxiliary power source so as to release said regulation system when said lever is lifted by the control wheel, causing the display disc powered by the source to jump of auxiliary energy, and so as to be able to immobilize said regulation system when the lever, released by the control wheel, falls back under the effect of its spring.
  • the mechanism proposed in the patent EP 1658531 makes it possible to have a display by jump, the use of an auxiliary energy source for the display mechanism allowing that practically no energy is taken from the going train and that the correct running of the watch does not is not affected when the chronograph is running.
  • this mechanism does not allow instantaneous triggering of the jump of the display disc, the lever of the triggering mechanism being controlled by the toothing of the movement control wheel.
  • this control wheel could have a bad round defect, which would have a direct impact on the moment of the jump.
  • the present invention aims to remedy these drawbacks by proposing a movement comprising a trigger mechanism allowing instantaneous triggering of a jump of an auxiliary mechanism although the control mobile, driven by the main energy source and arranged to cooperate with the trigger mechanism to release the auxiliary energy source when the auxiliary mechanism must be driven, has a force very much lower than that of said auxiliary energy source.
  • the present invention relates to a watch movement comprising a main energy source, an auxiliary energy source kinematically linked to an auxiliary mechanism via an auxiliary drive train, a mechanism for locking the auxiliary energy source arranged to move between a locked position in which it blocks the auxiliary energy source and an unlocked position in which it allows the auxiliary power source to rotate, a trigger mechanism of said locking mechanism arranged to move between a first rest position and a second maximum position, and to cooperate with the locking mechanism to drive it from its locked position to its unlocked position when passing from its first position to its second position, and at least one control wheel set driven by said main energy source and arranged to cooperate with the trigger mechanism to allow it to pass from its first position to its second position when said auxiliary mechanism is to be driven by said auxiliary power source.
  • the movement comprises an actuating member kinematically linked to the auxiliary energy source and arranged to cooperate with the trigger mechanism occupying its second position in order to be able to reposition it in its first position before the locking mechanism returns to its locked position.
  • the invention makes it possible to use the torque released by the auxiliary energy source both to drive the auxiliary mechanism and to return the trigger mechanism to its first rest position after having itself ensured the release of said auxiliary energy source, so that it is available again for the next trigger.
  • This system makes it possible to have a high ratio between the force provided by the control wheel and the torque of the auxiliary energy source to be released, making it possible to ensure instantaneous triggering of the jump of the auxiliary mechanism when said energy source auxiliary is released.
  • the trigger mechanism comprises a trigger lever, at least one trigger lever latch arranged to hold the trigger lever in its first position and to be able to be controlled by the control wheel set to release said trigger lever.
  • trigger and at least one trigger star arranged to be controlled by the trigger lever to drive the trigger mechanism locking in the unlocked position during passage of the release lever from its first position to its second position.
  • the locking mechanism comprises at least one lock of the auxiliary energy source arranged to cooperate with the trigger mechanism to pass from its locked position to its unlocked position and at least one locking cam of the source of auxiliary energy arranged to cooperate with the lock of the auxiliary energy source when the locking mechanism is in the locked position and kinematically linked to the auxiliary energy source to be able to be driven by said auxiliary energy source in order to return from the unlocked position to the locked position.
  • the locking mechanism comprises at least two auxiliary power source latches and two auxiliary power source locking cams, each associated with its respective auxiliary power source latch, and the mechanism trigger comprises at least two trigger stars, each being associated with its respective auxiliary power source lock, said trigger stars being phase-shifted so as to alternately drive the auxiliary power source locks into the unlocked position.
  • the trigger star is mounted on a frame of the movement and the trigger mechanism comprises a trigger pawl mounted on the trigger lever and arranged to drive the trigger star so as to drive the lock of the auxiliary power source in the unlocked position when said trigger lever passes from its first position to its second position.
  • the two trigger stars are mounted on a frame of the movement
  • the trigger mechanism comprises a trigger anchor carried by the trigger lever and a drive star integral with the two trigger stars, the anchor of release being arranged to drive the drive star and the release stars so as to alternately drive the locks of the auxiliary energy source in the unlocked position each time the release lever passes into its second position while preventing the positioning in its locked position of the latch of the auxiliary energy source which has been driven as long as the trigger lever is in its second position.
  • the two trigger stars are mounted on the trigger lever and arranged to alternately drive the locks of the auxiliary energy source into the unlocked position when the trigger lever passes from its first position to its second position and for maintaining, in its unlocked position, the latch of the auxiliary power source which has been driven while the trigger lever is in its second position
  • the trigger mechanism comprises a positioning star mounted on the trigger lever and secured to the trigger stars and a drive pawl mounted on the frame arranged to drive the positioning star when the trigger lever passes from its second position to its first position.
  • the trigger mechanism comprises a first trigger lever lock arranged to maintain the trigger lever in its first position and a second trigger lever lock arranged to maintain the trigger lever in a third position of rest intermediate after the first latch has released the release lever
  • the control wheel set comprises a first control cam arranged to cooperate with the first release lever lock to control the release of the release lever from the first release lever lock and a second control cam arranged to control the release of the trigger lever from the second trigger lever latch.
  • the trigger mechanism comprises a first trigger lever lock arranged to maintain the trigger lever in its first position and a second trigger lever lock arranged to lock the trigger lever in a fourth intermediate position when said release lever passes from its second position to its first position
  • the control wheel set comprises a control cam arranged to cooperate with the first release lever lock to control the release of the release lever from the first release lever lock release to pass from its first position to its second position
  • said first release lever lock comprising means for controlling the second release lever lock arranged to control the release of the release lever of the second release lever lock to pass from his fourth to his first positio not.
  • the actuating member is integral with a wheel of the auxiliary drive train.
  • the actuating member comprises at least one arm arranged to cooperate with the trigger lever occupying its second position.
  • the auxiliary mechanism is disposed between the auxiliary power source and the locking mechanism.
  • control wheel is linked to a seconds hand.
  • the movement also comprises an isolating mechanism of the trigger mechanism arranged to be able to occupy an active position in which it cooperates with said trigger mechanism to block it and an inactive position in which it no longer cooperates with the trigger mechanism, the passage into the active position being controlled by the auxiliary mechanism when said auxiliary mechanism must not be driven by the auxiliary energy source and the transition to the inactive position being controlled by a release mechanism.
  • an isolating mechanism of the trigger mechanism arranged to be able to occupy an active position in which it cooperates with said trigger mechanism to block it and an inactive position in which it no longer cooperates with the trigger mechanism, the passage into the active position being controlled by the auxiliary mechanism when said auxiliary mechanism must not be driven by the auxiliary energy source and the transition to the inactive position being controlled by a release mechanism.
  • the isolator mechanism comprises an isolator arranged to be able to maintain the trip lever occupying its first position when it is in the active position and an isolator lock arranged to maintain the isolator in the inactive position and to be able to be controlled by the auxiliary mechanism in order to allow it to pass into the active position.
  • the mechanism for releasing the insulator mechanism comprises an insulator release member arranged to be able to drive the insulator into the inactive position when the auxiliary mechanism can be driven by the auxiliary energy source and a control arranged to control said release member.
  • the auxiliary mechanism is a display mechanism.
  • the present invention relates to a watch movement comprising a main energy source 1, such as a main barrel, supplying energy to a basic movement indicating the current time.
  • the movement may include other mechanisms, for example a chronograph mechanism, powered by the main barrel.
  • the movement also includes an auxiliary energy source 2, such as an auxiliary barrel or a leaf spring, kinematically linked to an auxiliary mechanism of the movement via an auxiliary drive train 3.
  • the auxiliary mechanism is arranged to operate by jump.
  • the auxiliary mechanism is a jumping display mechanism of a chronograph mechanism, and more particularly a jumping display disc of 4 minute units of a standard chronograph mechanism or a counting chronograph backwards.
  • This minute units display disc 4 is secured to a display wheel 4a which drives the tens of minutes display member, itself driving the hours display member, for example by means of actuating fingers and stars cooperating to cause the display member corresponding to each change of ten minutes or hour. It is obvious that the display discs can be replaced by needles.
  • the auxiliary energy source 2 is locked intermittently by a locking mechanism 5, arranged in such a way that the auxiliary mechanism, and in particular the display wheel 4a of the display disc 4, is positioned, in the kinematic chain connecting the auxiliary power source 2 to the locking mechanism 5, between said auxiliary power source 2 and said locking mechanism 5.
  • the locking mechanism 5 is arranged to move alternately between a locked position in which it locks the auxiliary power source 2 and an unlocked position in which it has released the auxiliary power source 2 and lets it rotate. This allows the display disc 4 to be jumpy, without drawing too much energy from the main energy source 1.
  • the mechanism trigger 6 is arranged to move between a first rest position and a second maximum position, and to cooperate with the locking mechanism 5 to drive it from its locked position to its unlocked position when said trigger mechanism 6 passes from its first position to its second position.
  • the control wheel set 8 comprises at least one control cam 8a arranged to cooperate with the trigger mechanism 6 to allow it to pass from its first position to its second position when the auxiliary mechanism must be driven by the auxiliary energy source 2 which must then be unlocked and released.
  • the control mobile 8 is here linked to a seconds hand of the chronograph, driven by the main energy source 1. It is therefore configured to make one revolution per minute so as to release the auxiliary energy source 2 once per minute to cause display disc 4 to jump every minute. It is obvious that this frequency can be different, depending on the auxiliary mechanism.
  • an actuation member 10 kinematically linked to the auxiliary energy source 2 and arranged to cooperate with the trigger mechanism 6 when it occupies its second position in order to be able to reposition it in its first position as said actuating member 10 is supplied with energy and driven by the auxiliary energy source 2, that is to say before the locking mechanism 5 returns to its locked position.
  • the actuating member 10 is integral with the display wheel 4a and is in the form of a star coaxial with said display wheel 4a and comprising ten actuating arms 10a whose role will be explained below. after.
  • the trigger mechanism 6 comprises a trigger lever 12 pivotally mounted at A to be able to pivot counterclockwise from its first rest position to its second maximum angular position.
  • the trigger lever is forced into its rest position by a spring 14.
  • the trigger lever 12 has a projection 12a positioned so that, when the trigger lever 12 occupies its second position, said projection 12a is in the path of one of the actuating arms 10a of the actuating member 10 when it is rotated, allowing said actuating arm 10a of the actuating member 10 to cooperate with the trigger lever 12 to rotate and return it to its first rest position.
  • a trigger pawl 16 whose role will be specified below, is pivotally mounted on the end of the trigger lever 12 in the direction of the locking mechanism 5.
  • the trigger mechanism 6 also comprises a trigger lever lock 18 pivotally mounted at B, arranged to hold the trigger lever 12 in its first position and to be able to be controlled by the control cam 8a of the control wheel set 8 to pivot in B and release said trigger lever 12 to allow it to pass from its first position to its second position under the action of its spring 14.
  • the trigger mechanism 6 also includes a star trigger 20, which in this embodiment is pivotally mounted on an element of the movement frame.
  • the trigger star 20 is arranged to be controlled and driven by the trigger pawl 16 of the trigger lever 12 in the clockwise direction to drive the locking mechanism 5 in the unlocked position during the passage of the trigger lever 12 from its first position to its second position.
  • the trigger star 20 is integral with a drive star 22 arranged to be actuated by the trigger pawl 16 when the trigger lever 12 passes from its first position to its second position.
  • the locking mechanism 5 comprises, in this embodiment, a lock 24 of the auxiliary energy source 2 and a locking cam 26 of the auxiliary energy source 2, pivotally mounted on the frame.
  • the lock 24 is arranged to cooperate on the one hand with the locking cam 26 which comes into abutment on its beak 24a when the locking mechanism 5 is in the locked position and on the other hand with the trigger mechanism 6 being driven by the trigger star 20 to pivot counterclockwise and lift to pass from its locked position to its unlocked position by releasing the locking cam 26.
  • the locking cam 26 is secured to a wheel 28 linked kinematically to the auxiliary power source 2 by a transmission 30 meshing with the display wheel 4a.
  • the unlocked locking cam 26 can be driven by the released auxiliary energy source 2 and rotate in the direction counterclockwise in order to return from the unlocked position to the locked position, in abutment against the beak 24a of the lock 24.
  • the operation of the movement is as follows: between two jumps of the display disc 4, the trigger lever 12 is in its first rest position held by the trigger lever lock 18 and the locking mechanism 5 is in the locked position, the locking cam 26 being in abutment against the lock 24, as shown in the figure 1 .
  • the auxiliary power source 2 is blocked, the torque it exerts being retained by the locking mechanism 5.
  • the control wheel set 8 carried by the seconds hand and rotating in the counterclockwise direction, actuates by its control cam 8a the release lever lock 18 and causes it to pivot in the direction clockwise by releasing the trigger lever 12.
  • the control cam 8a must mainly overcome the friction between the trigger lever lock 18 and the trigger lever 12.
  • the latter under the action of its spring 14 , pivots at A in the counterclockwise direction from its first rest position to its second maximum angular position, allowing its pawl 16 to drive the drive starwheel 22 by one step clockwise and therefore the trigger 20.
  • the trigger star 20 actuates the latch 24 by tilting it counterclockwise so that the latch 24 lifts and disengages from the latch cam 26 to reach the unlocked position.
  • the torque of the auxiliary power source 2 is released, which rotates the display wheel 4a counterclockwise via the auxiliary drive train 3.
  • the display wheel 4a drives the actuating member 10 so that one of its arms 10a cooperates with the protrusion 12a of the lever trigger 12 arrived in its second position and drives the trigger lever 12 clockwise until it returns to its first position, again locked by its lock 18.
  • the locking cam 26 is driven in rotation in the counterclockwise direction by the auxiliary energy source, through the intermediate gear 30 and the wheel 28, of one turn so that the locking cam 26 comes back into abutment against the lock 24, itself brought back by its return spring, so that the locking mechanism is again in the locked position.
  • the release lever 12 is repositioned in its first position thanks to the torque supplied by the auxiliary energy source 2 still free to rotate, in order to overcome the spring 14 of the release lever 12, before the locking mechanism returns in its locked position.
  • the mechanism is ready for a new leap.
  • the actuating member 10 is a star wheel with six arms 10a secured to a wheel 3a of the auxiliary drive train 3. Each arm 10a is arranged to cooperate with the protrusion 12a provided laterally on the lever of trigger 12.
  • the display wheel 4a is still inscribed in the kinematic chain between the auxiliary energy source 2 and the locking mechanism 5.
  • the release mechanism 6 comprises two release lever locks 18', 18" superimposed and pivotally mounted at B independently of each other. , namely a first release lever lock 18′ arranged to hold the release lever 12 in its first rest position and a second release lever lock 18′′ arranged to hold the release lever 12 in a third intermediate rest angular position between the first rest position and the second maximum angular position, after the first lock 18' has released the trigger lever 12.
  • each trigger lever lock 18', 18" comprises, at its end opposite to that cooperating with the mobile control 8, a notch 18a in which the foot 12b of the trigger lever 12 can be housed when it is in one of the first or third rest positions.
  • the shape of the foot 12b is provided so that the foot 12b rests on the edge of the hook 18b of the first release lever lock 18' when the release lever 12 is completely released, between its third intermediate rest position and its second angular position. maximum.
  • control wheel set 8 comprises two control cams 8', 8" which are superimposed and phase shifted here by 180°. Another phase shift angle is possible.
  • the first control cam 8' is arranged to cooperate with the first release lever lock 18' by pivoting it at B to release the foot 12b of the release lever 12 from the hook 18b of the first release lever lock 18' in order to allow said trigger lever 12, under the action of its spring, to pivot at A from its first rest position to its third intermediate rest position, in which its foot 12b abuts against the hook 18b of the second lever lock trigger 18".
  • the second control cam 8" is arranged to cooperate with the second trigger lever lock 18" by pivoting it at B to then release the foot 12b of the trigger lever 12 from the hook 18b of the second trigger lever lock 18" in order to allow the trigger lever 12, still under the action of its spring, to continue to pivot in A from its third rest position to its second maximum position.
  • FIG. 11 Another embodiment of the trigger lever locks is shown in the figure 11 .
  • a first release lever lock 18 ' pivotally mounted at B, and arranged to hold the release lever 12 in its first rest position
  • a second release lever lock 18 " also pivotally mounted at B The second lock 18" comprises an arm 32 arranged to engage in a notch 34 provided at the rear of the foot 12b of the release lever 12 when said release lever 12, returning from its second position, passes through a fourth intermediate position before returning to its first rest position.
  • the second latch 18" is provided with a spring 36.
  • the first trigger lever latch 18' carries means for controlling the second latch 18" constituted here by a connecting pin 38 arranged to cooperate with a beak 40 of the second latch 18" in order to pivot said second latch 18" to retract it from the notch 34 when the first latch 18', once released by the cam 8a, is returned to its initial position under the action of its own spring recall, to lock said trigger lever 12 in its first rest position.
  • control wheel set 8 comprises a single control cam 8a, pivoting counterclockwise, and arranged to cooperate with the first release lever lock 18' by pivoting it at B in the clockwise direction to release the foot 12b of the trigger lever 12 of the hook 18b of the first trigger lever lock 18' in order to allow the trigger lever 12 to pivot counterclockwise from its first rest position to its second maximum position.
  • the trigger lever 12 pivots clockwise to its fourth intermediate position in which the arm 32 of the second release lever lock 18" engages in the notch 34 of said release lever 12 so as to block and lock the trigger lever 12 by the second lock 18" as long as the control cam 8a has not left the first lock 18'.
  • This mechanism makes it possible to synchronize the positioning of the trigger lever locks 18', 18" with the positions of the trigger lever 12.
  • the locking mechanism 5 comprises in this embodiment two locks 24', 24" of the auxiliary energy source 2 and two locking cams 26', 26" of the auxiliary energy source 2, each being associated with its lock 26', 26" from the respective auxiliary power source 2.
  • the two locks 24', 24" are pivotally mounted one above the other.
  • the two locking cams 26', 26" are integrally mounted on the wheel 28 and superimposed so as to be out of phase with each other. relative to the other by 180°.
  • the trigger mechanism 6 is adapted accordingly, and comprises two trigger stars 20', 20" pivotally mounted on the frame, each being associated with its respective lock 24', 24". Said trigger stars 20', 20" are mounted integral with the drive star 22 driven by the trigger pawl 16 each time it goes into second gear. position of the trigger lever 12. The trigger stars 20', 20" are out of phase with respect to each other by one step so as to alternately drive the locks 24', 24" of the auxiliary energy source 2 in the unlocked position each time the release lever 12 passes into the second position.
  • Each of the locks 24', 24" cooperates respectively on the one hand with its locking cam 26', 26" which comes into abutment on the beak 24a of its respective lock 24', 24" when the locking mechanism 5 is in position locked and on the other hand with its trigger star 20', 20" to pivot and lift alternately in order to pass from a locked position to an unlocked position by releasing its locking cam 26', 26", as described below above with reference to the figure 1 with a single lock 24, a single locking cam 26 and a single trigger star 20.
  • the operation of this movement in this embodiment of the figure 2 is as follows: between two jumps of the display disc 4, the trigger lever 12 is in its first rest position held by the hook 18b of the first trigger lever lock 18' and the locking mechanism 5 is in the locked position , the locking cam 26' being in abutment against its lock 24', the other locking cam 26" being positioned at 180°, as shown in the picture 2 .
  • the auxiliary power source 2 is blocked, the torque it exerts being retained by the locking mechanism 5.
  • the control wheel 8 carried by the seconds hand and rotating counterclockwise, actuates by its control cam 8' the first release lever lock 18' and causes it to pivot clockwise by releasing the release lever 12 from its hook 18b.
  • the trigger lever under the action of its spring, pivots at A counterclockwise from its first rest position to its third intermediate rest position, coming to rest on the hook 18b of the second release lever lock 18", as shown in the picture 3 .
  • the locks 18' and 18" have their own return springs which bring them back to their initial position. Once the control cam 8' has passed, the first lock 18', under the action of its spring, tends to return to its position of departure but comes into contact and rubs under the foot 12b of the trigger lever 12. It retains a prewinding allowing the blocking of the foot 12b on the next return of the trigger lever 12.
  • the auxiliary source 2 provides energy to the auxiliary mechanism by driving the various elements in rotation, and in particular the drive train 3 with the wheel 3a carrying the actuating member 10, the trigger lever 12, under the action of its spring 14, continues to pivot counterclockwise, to reach its second maximum angular position, on a stop (not shown), as shown in figure 6 .
  • the protrusion 12a of the trigger lever 12 is in the path of one of the arms 10a of the actuating member 10.
  • the foot 12b of the trigger lever 12 remains in contact with the edge of the hook 18b of the first release lever lock 18' which, after being released by its control cam 8', tends to return to its initial position under the action of its return spring.
  • the arm 10a of the actuating member 10 driven in rotation in the counterclockwise direction by the auxiliary energy source 2 via the drive train 3, cooperates with the protrusion 12a of the trigger lever 12 and drives in rotation of said trigger lever 12, from its second maximum position, clockwise.
  • the drive train 3 is arranged to overcome the force exerted by the spring 14 of the trigger lever 12.
  • the foot 12b of the trigger lever 12 returns to the rear of the hook 18b and is repositioned in the notch 18a of the first lock trigger lever 18 'which, brought back by its own return spring by pivoting counterclockwise, locks the trigger lever 12 in its first rest position.
  • the trigger mechanism 6 is again in its first rest position.
  • the locking mechanism with two bolts makes it possible to ensure the blocking of the auxiliary energy source 2 during the jump of the display wheel 4a and to guarantee a single jump of the display disc 4 at each release.
  • the two trigger stars 20', 20" are five-tooth stars, integral with a ten-tooth drive star wheel 22, the assembly still being pivotally mounted on the frame.
  • the trigger pawl 16 is replaced by a trigger anchor 42 secured to the trigger lever 12 and arranged to rotate the drive star wheel 22 in a clockwise direction by half a step each time the lever position changes.
  • release 12 between its first and second positions, that is to say each time it passes from its first rest position to its second maximum position counterclockwise and each time it passes from its second maximum position to its first rest position in clockwise.
  • a jumper 44 is provided which acts on a star wheel with twenty teeth 46 integral with the star wheel 22, allowing the stabilization at each half-step of the star wheel 22.
  • the two trigger stars 20', 20" are half a step out of phase.
  • the rotation of the set of four stars consisting of the two trigger stars 20', 20", the drive star 22 and the star 46, driven by the trigger anchor 42, alternately causes the rotation of the locks 24', 24" from the auxiliary energy source 2 counterclockwise in the unlocked position each time the release lever 12 passes from its first position to its second maximum position, releasing the kinematic chain from the auxiliary energy source 2, while by alternately maintaining the locks 24', 24" in a stable intermediate raised position which does not block the locking cams 26', 26" respectively as long as the trigger lever 12 is in its second maximum position.
  • the position of the trigger stars 20', 20" having turned only a quarter of a step prevents the positioning of the locks 24', 24" in their locked position as long as the trigger lever 12 is in its second position.
  • the return of the trigger lever 12 from its second position to its first position causes a new rotation of the trigger anchor 42 allowing the bolt raised in the stable intermediate raised position to return to the locked position in order to be able to block its locking cam subsequently.
  • This mechanism makes it possible to alternately position the locks 24', 24" in a stable raised position as long as the positioning lever 12 is in second maximum angular position, making it possible not to put the mechanism in the default position if the power reserve of the auxiliary energy source 2 is too low to allow the release lever to return to its first position, even if the jump has been realized.
  • a simple winding of the auxiliary energy source 2 will provide the energy necessary to return the release lever 12 to its first rest position, then allowing the locking mechanism to move into the locked position, available for the next jump.
  • the two trigger stars 20', 20" are pivotally mounted directly on the trigger lever 12.
  • the trigger mechanism 6 also comprises a positioning star 48 pivotally mounted on the trigger lever 12 and secured to the trigger stars 20', 20".
  • the positioning star 48 is held by a stop 50 provided with a spring 52 .
  • a drive pawl 54 mounted on the frame and arranged to drive the positioning star 48 when the trigger lever 12 passes from its second position to its first position.
  • This mechanism makes it possible to maintain the raised lock 24', 24" in its unlocked position and not to block its locking cam 26', 26" as long as the positioning lever 12 is in the second maximum angular position, making it possible not to the mechanism in the default position if the power reserve of the auxiliary energy source 2 is too low to allow the driving of said locking cam 26', 26" and a return of the trigger lever 12 to its first position.
  • a simple winding of the auxiliary energy source 2 will provide the energy necessary to return the trigger lever 12 to its first rest position by allowing said locking cam 26', 26" to rotate in order to then pass the mechanism lock in locked position, available for next jump.
  • the present invention makes it possible to obtain a movement comprising a trigger mechanism arranged to allow instantaneous triggering of a jump of the auxiliary mechanism although the mobile control has a force much lower than that of the auxiliary energy source which is released to supply said auxiliary mechanism.
  • the actuating member kinematically linked to the auxiliary energy source makes it possible to reposition the tripping lever so that the latter is again available for the next tripping thanks to the torque released by the auxiliary energy source, this torque also allowing to train the auxiliary mechanism.
  • This makes it possible to form a system which operates in a loop between the trigger mechanism, the auxiliary energy source and the auxiliary mechanism and which makes it possible to have a high ratio between the force provided by the control wheel and the torque to be released. .
  • the optimization of the lever arms between the mobile control 8 and the release lever 12 makes it possible to make the mobile control 8 bear only the friction due to the spring of the release lever 12.
  • the The friction to be overcome can be reduced by improving the tribological properties of the contact surfaces making it possible to increase the ratio between the force required and the force to be overcome.
  • the movement comprises an isolator mechanism 56 of the trigger mechanism 6 making it possible to lock said trigger mechanism 6 when it is no longer necessary to drive the auxiliary mechanism.
  • the isolator mechanism 56 makes it possible more particularly to lock the tripping 12 of the auxiliary power source 2 once the disks display 0 to ensure that there will be no more skipping of the display disks.
  • the minute units display disc 4 is represented here by its minute units cam 58, and the tens of minutes and hours display discs are represented here respectively by the tens of minutes cam 60 and by the hour cam 62.
  • the position of the minute, tens of minute and hour unit display discs is detected by a detection rocker 64 provided with two feeler arms 64a, 64b and a control arm 64c of the mechanism isolator, as will be described below. This mechanism of position and rocker cams with feelers is known to those skilled in the art.
  • the isolator mechanism 56 is arranged to be able to occupy an active position in which it cooperates with the trigger mechanism 6, and more particularly with its trigger lever 12, to block it and an inactive position in which it no longer cooperates with the trigger mechanism.
  • trigger 6 the switch to the active position being controlled by the auxiliary mechanism, here the chronograph display mechanism, when said auxiliary mechanism must not be driven by the auxiliary energy source 2 and the switch to the inactive position being controlled by a release mechanism 66.
  • the isolator mechanism 56 comprises an isolator 68 pivotally mounted on the frame between its inactive position as shown in the figure 12 and its active position as shown in the figure 13 .
  • the insulator 68 comprises a first arm 68a of complementary shape to a locking arm 12c of the trigger lever 12, arranged to be able to cooperate with said locking arm 12c when the trigger lever 12 is in its first rest position, in order to maintain said trigger lever 12 in its first position when said isolator in the active position.
  • the isolator mechanism also includes an isolator latch 70 pivotally mounted to the frame.
  • the lock 70 includes a hook 70a arranged to cooperate with a second arm 68b of the insulator 68 in order to maintain the insulator 68 in the inactive position.
  • the lock 70 also comprises an arm 70b carrying a pin 72 arranged to be able to be controlled by the auxiliary mechanism, and more particularly by a finger 73 provided on the control arm 64c of the detection rocker 64, to make the lock 70 pivot in order to to release the insulator 68 and allow it to pass into the active position.
  • the release mechanism 66 of the insulator mechanism 56 comprises a release member 74 of the insulator 68 arranged to be able to drive the insulator 68 into the inactive position and a control member 76 arranged to control said release member 74 in order to pass the 68 isolator in inactive position when the auxiliary mechanism can be driven by the auxiliary energy source 2 and the trigger lever 12 must no longer be blocked by the isolator mechanism 56.
  • the release member 74 is advantageously a slide and the control member 76 is the START command of the chronograph mechanism controlled by an external push-button (not shown). It is quite obvious that the control member could be connected to a mechanism internal to the movement.
  • the slide 74 is pivotally mounted by one of its ends 74a on the control 76.
  • the free end 74b of the slide 74 is arranged to be able to cooperate with a third arm 68c of the insulator 68 in order to cause said insulator 68 to pivot into position. inactive.
  • the mechanism of release 66 is arranged to be able to drive the isolator mechanism 56 into the inactive position only when the slide 74 occupies an authorized position, controlled by the auxiliary mechanism.
  • the slide 74 comprises a groove 77 in which slides a pin 78 secured to the control arm 64c of the detection rocker 64, allowing the slide 74 to pivot according to the position of the detection rocker 64 in order to be able to occupy an authorized position.
  • the third arm 68c of the insulator 68 comprises a stop 80 arranged to cooperate with the end 74b of the slide 74 only when it is in its authorized position. Apart from this stop 80, no contact between the slide 74 and the third arm 68c of the insulator 68 is possible.
  • the operation of the isolator mechanism is as follows, starting from its inactive position as shown on the figure 12 .
  • the position of the detection flip-flop 64 indicates that the hour and tens of minutes discs display zero, but the minute units disc does not yet display the zero so the trip lever 12 is still needed to release the auxiliary power source 2 and drive the minute units display disc as described above.
  • the hook 70a of the lock 70 cooperates with the second arm 68b of the insulator to maintain said insulator 68 in the inactive position, its first arm 68a not being in contact with the arm 12c of the trigger lever 12.
  • arm 64b of detection rocker 64 falls into minute units cam 58 so that under the action of its spring (not shown) said detection 64 pivots, with its control arm 64c, in the counterclockwise direction, causing, by pressing its finger 73 on the pin 72 of the lock 70, the pivoting of the said lock 70 in the clockwise direction.
  • the hook 70a of the latch 70 disengages from the second arm 68b of the insulator 68, so that said released insulator 68 pivots counterclockwise under the action of its spring (not shown) to move into position active.
  • the first arm 68a of the insulator 68 cooperates with the arm 12c of the trigger lever 12 returned to its first rest position, as described above, preventing any change in position of said trigger lever 12.
  • the trigger mechanism 6 is blocked, preventing the release in particular of the drive train 3 of the display disc 4 so that any jumping of the display discs is impossible.
  • the cams 58, 60, and 62 of the display discs are positioned to display zeros, so that the countdown mechanism is not ready for a new count.
  • the position of the slide 74 imposed by the control arm 64c of the detection rocker 64 does not correspond to its authorized position to cooperate with the insulator 68, so that a maneuver of the slide 74 cannot not rotate the insulator 68 to move it to the inactive position and release the trip lever 12.
  • the position of the various display discs is adjusted, at least one of the display discs displaying a value other than zero.
  • the position of the cams 58, 60, 62 is modified accordingly, so that the detection rocker 64 as well as its control arm 64c pivot clockwise.
  • This pivoting of the control arm 64c causes, via its pin 78 engaged in the groove 77 of the slide 74, the pivoting of the said slide 74 in the counterclockwise direction in order to position it in its authorized position opposite the abutment 80 of the third arm 68c of the insulator 68.
  • the auxiliary mechanism is a countdown chronograph mechanism, but it is obvious that the present invention can also be applied to other auxiliary mechanisms, such as striking mechanisms of the alarm type, minute repeater or great bell, powered by an auxiliary energy source which must be released by a control having a much lower force.

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Description

La présente invention concerne un mouvement horloger comprenant une source d'énergie principale, une source d'énergie auxiliaire liée cinématiquement à un mécanisme auxiliaire par l'intermédiaire d'un rouage d'entrainement auxiliaire, un mécanisme de verrouillage de la source d'énergie auxiliaire agencé pour évoluer entre une position verrouillée dans laquelle il bloque la source d'énergie auxiliaire et une position déverrouillée dans laquelle il laisse tourner la source d'énergie auxiliaire, un mécanisme de déclenchement dudit mécanisme de verrouillage agencé pour évoluer entre une première position de repos et une deuxième position maximale, et pour coopérer avec le mécanisme de verrouillage pour l'entrainer de sa position verrouillée à sa position déverrouillée lors de son passage de sa première position à sa deuxième position, et au moins un mobile de commande entrainé par ladite source d'énergie principale et agencé pour coopérer avec le mécanisme de déclenchement pour permettre son passage de sa première position à sa deuxième position lorsque ledit mécanisme auxiliaire doit être entrainé par ladite source d'énergie auxiliaire.The present invention relates to a watch movement comprising a main energy source, an auxiliary energy source kinematically linked to an auxiliary mechanism via an auxiliary drive train, a mechanism for locking the energy source auxiliary arranged to move between a locked position in which it blocks the auxiliary power source and an unlocked position in which it allows the auxiliary power source to rotate, a trigger mechanism of said locking mechanism arranged to move between a first position of rest and a maximum second position, and to cooperate with the locking mechanism to drive it from its locked position to its unlocked position when it passes from its first position to its second position, and at least one control wheel set driven by said main power source and arranged to cooperate with the trigger mechanism to enable s passing from its first position to its second position when said auxiliary mechanism must be driven by said auxiliary power source.

Un tel mouvement est par exemple décrit dans le brevet EP 1658531 . Dans ce document, le mécanisme auxiliaire est un dispositif d'affichage d'un mécanisme de chronographe comprenant un disque d'affichage, un rouage d'affichage dont un mobile porte ledit disque d'affichage, une source d'énergie auxiliaire reliée cinématiquement audit rouage d'affichage et des moyens de commande du rouage d'affichage agencés de manière à commander son entrainement par la source d'énergie auxiliaire lorsque l'information à afficher doit être modifiée.Such a movement is for example described in the patent EP 1658531 . In this document, the auxiliary mechanism is a display device of a chronograph mechanism comprising a display disc, a display gear train of which a moving body carries said display disc, an auxiliary energy source kinematically connected to said display train and control means of the display train arranged so as to control its drive by the auxiliary energy source when the information to be displayed must be modified.

Ces moyens de commande comprennent un mécanisme de déclenchement comprenant un levier en prise avec la denture d'une roue de commande appartenant au rouage de chronographe et alimentée par la source d'énergie principale du mouvement lorsque le mécanisme de chronographe sera embrayé. Le levier est agencé pour coopérer avec un système de régulation relié à la source d'énergie auxiliaire de manière à libérer ledit système de régulation lorsque ledit levier est soulevé par la roue de commande, entrainant le saut du disque d'affichage alimenté par la source d'énergie auxiliaire, et de manière à pouvoir immobiliser ledit système de régulation lorsque le levier, libéré par la roue de commande, retombe sous l'effet de son ressort.These control means comprise a trigger mechanism comprising a lever engaged with the toothing of a control wheel belonging to the chronograph train and powered by the main energy source of the movement when the chronograph mechanism is engaged. The lever is arranged to cooperate with a regulation system connected to the auxiliary power source so as to release said regulation system when said lever is lifted by the control wheel, causing the display disc powered by the source to jump of auxiliary energy, and so as to be able to immobilize said regulation system when the lever, released by the control wheel, falls back under the effect of its spring.

Le mécanisme proposé dans le brevet EP 1658531 permet d'avoir un affichage par saut, l'utilisation d'une source d'énergie auxiliaire pour le mécanisme d'affichage permettant que pratiquement aucune énergie n'est prélevée sur le rouage de finissage et que la bonne marche de la montre n'est pas affectée lorsque le chronographe est en fonctionnement.The mechanism proposed in the patent EP 1658531 makes it possible to have a display by jump, the use of an auxiliary energy source for the display mechanism allowing that practically no energy is taken from the going train and that the correct running of the watch does not is not affected when the chronograph is running.

Toutefois, ce mécanisme ne permet pas un déclenchement instantané du saut du disque d'affichage, le levier du mécanisme de déclenchement étant commandé par la denture de la roue de commande du mouvement. De plus cette roue de commande pourrait présenter un défaut de mal rond, ce qui aurait un impact direct sur le moment du saut.However, this mechanism does not allow instantaneous triggering of the jump of the display disc, the lever of the triggering mechanism being controlled by the toothing of the movement control wheel. In addition, this control wheel could have a bad round defect, which would have a direct impact on the moment of the jump.

La présente invention vise à remédier à ces inconvénients en proposant un mouvement comprenant un mécanisme de déclenchement permettant un déclenchement instantané d'un saut d'un mécanisme auxiliaire bien que le mobile de commande, entrainé par la source d'énergie principale et agencé pour coopérer avec le mécanisme de déclenchement pour libérer la source d'énergie auxiliaire lorsque le mécanisme auxiliaire doit être entrainé, ait une force très nettement inférieure à celle de ladite source d'énergie auxiliaire.The present invention aims to remedy these drawbacks by proposing a movement comprising a trigger mechanism allowing instantaneous triggering of a jump of an auxiliary mechanism although the control mobile, driven by the main energy source and arranged to cooperate with the trigger mechanism to release the auxiliary energy source when the auxiliary mechanism must be driven, has a force very much lower than that of said auxiliary energy source.

A cet effet, la présente invention concerne un mouvement horloger comprenant une source d'énergie principale, une source d'énergie auxiliaire liée cinématiquement à un mécanisme auxiliaire par l'intermédiaire d'un rouage d'entrainement auxiliaire, un mécanisme de verrouillage de la source d'énergie auxiliaire agencé pour évoluer entre une position verrouillée dans laquelle il bloque la source d'énergie auxiliaire et une position déverrouillée dans laquelle il laisse tourner la source d'énergie auxiliaire, un mécanisme de déclenchement dudit mécanisme de verrouillage agencé pour évoluer entre une première position de repos et une deuxième position maximale, et pour coopérer avec le mécanisme de verrouillage pour l'entrainer de sa position verrouillée à sa position déverrouillée lors de son passage de sa première position à sa deuxième position, et au moins un mobile de commande entrainé par ladite source d'énergie principale et agencé pour coopérer avec le mécanisme de déclenchement pour permettre son passage de sa première position à sa deuxième position lorsque ledit mécanisme auxiliaire doit être entrainé par ladite source d'énergie auxiliaire.To this end, the present invention relates to a watch movement comprising a main energy source, an auxiliary energy source kinematically linked to an auxiliary mechanism via an auxiliary drive train, a mechanism for locking the auxiliary energy source arranged to move between a locked position in which it blocks the auxiliary energy source and an unlocked position in which it allows the auxiliary power source to rotate, a trigger mechanism of said locking mechanism arranged to move between a first rest position and a second maximum position, and to cooperate with the locking mechanism to drive it from its locked position to its unlocked position when passing from its first position to its second position, and at least one control wheel set driven by said main energy source and arranged to cooperate with the trigger mechanism to allow it to pass from its first position to its second position when said auxiliary mechanism is to be driven by said auxiliary power source.

Selon l'invention, le mouvement comprend un organe d'actionnement lié cinématiquement à la source d'énergie auxiliaire et agencé pour coopérer avec le mécanisme de déclenchement occupant sa deuxième position pour pouvoir le repositionner dans sa première position avant que le mécanisme de verrouillage ne repasse dans sa position verrouillée.According to the invention, the movement comprises an actuating member kinematically linked to the auxiliary energy source and arranged to cooperate with the trigger mechanism occupying its second position in order to be able to reposition it in its first position before the locking mechanism returns to its locked position.

Ainsi, l'invention permet d'utiliser le couple libéré par la source d'énergie auxiliaire à la fois pour entrainer le mécanisme auxiliaire et pour remettre le mécanisme de déclenchement dans sa première position de repos après avoir lui-même assuré la libération de ladite source d'énergie auxiliaire, de sorte qu'il est de nouveau disponible pour le prochain déclenchement. Ce système permet d'avoir un rapport important entre l'effort fourni par le mobile de commande et le couple de la source d'énergie auxiliaire à libérer, permettant d'assurer un déclenchement instantané du saut du mécanisme auxiliaire lorsque ladite source d'énergie auxiliaire est libérée.Thus, the invention makes it possible to use the torque released by the auxiliary energy source both to drive the auxiliary mechanism and to return the trigger mechanism to its first rest position after having itself ensured the release of said auxiliary energy source, so that it is available again for the next trigger. This system makes it possible to have a high ratio between the force provided by the control wheel and the torque of the auxiliary energy source to be released, making it possible to ensure instantaneous triggering of the jump of the auxiliary mechanism when said energy source auxiliary is released.

D'une manière avantageuse, le mécanisme de déclenchement comprend un levier de déclenchement, au moins un verrou de levier de déclenchement agencé pour maintenir le levier de déclenchement dans sa première position et pour pouvoir être commandé par le mobile de commande pour libérer ledit levier de déclenchement, et au moins une étoile de déclenchement agencée pour être commandée par le levier de déclenchement pour entrainer le mécanisme de verrouillage en position déverrouillée au cours du passage du levier de déclenchement de sa première position à sa deuxième position.Advantageously, the trigger mechanism comprises a trigger lever, at least one trigger lever latch arranged to hold the trigger lever in its first position and to be able to be controlled by the control wheel set to release said trigger lever. trigger, and at least one trigger star arranged to be controlled by the trigger lever to drive the trigger mechanism locking in the unlocked position during passage of the release lever from its first position to its second position.

D'une manière avantageuse, le mécanisme de verrouillage comprend au moins un verrou de la source d'énergie auxiliaire agencé pour coopérer avec le mécanisme de déclenchement pour passer de sa position verrouillée à sa position déverrouillée et au moins une came de verrouillage de la source d'énergie auxiliaire agencée pour coopérer avec le verrou de la source d'énergie auxiliaire lorsque le mécanisme de verrouillage est en position verrouillée et liée cinématiquement à la source d'énergie auxiliaire pour pouvoir être entrainée par ladite source d'énergie auxiliaire afin de revenir de la position déverrouillée à la position verrouillée.Advantageously, the locking mechanism comprises at least one lock of the auxiliary energy source arranged to cooperate with the trigger mechanism to pass from its locked position to its unlocked position and at least one locking cam of the source of auxiliary energy arranged to cooperate with the lock of the auxiliary energy source when the locking mechanism is in the locked position and kinematically linked to the auxiliary energy source to be able to be driven by said auxiliary energy source in order to return from the unlocked position to the locked position.

De préférence, le mécanisme de verrouillage comprend au moins deux verrous de la source d'énergie auxiliaire et deux cames de verrouillage de la source d'énergie auxiliaire, chacune étant associée à son verrou de la source d'énergie auxiliaire respectif, et le mécanisme de déclenchement comprend au moins deux étoiles de déclenchement, chacune étant associée à son verrou de la source d'énergie auxiliaire respectif, lesdites étoiles de déclenchement étant déphasées de manière à entrainer alternativement les verrous de la source d'énergie auxiliaire en position déverrouillée.Preferably, the locking mechanism comprises at least two auxiliary power source latches and two auxiliary power source locking cams, each associated with its respective auxiliary power source latch, and the mechanism trigger comprises at least two trigger stars, each being associated with its respective auxiliary power source lock, said trigger stars being phase-shifted so as to alternately drive the auxiliary power source locks into the unlocked position.

Selon un premier mode de réalisation, l'étoile de déclenchement est montée sur un bâti du mouvement et le mécanisme de déclenchement comprend un cliquet de déclenchement monté sur le levier de déclenchement et agencé pour entrainer l'étoile de déclenchement de manière à entrainer le verrou de la source d'énergie auxiliaire en position déverrouillée lorsque ledit levier de déclenchement passe de sa première position à sa deuxième position.According to a first embodiment, the trigger star is mounted on a frame of the movement and the trigger mechanism comprises a trigger pawl mounted on the trigger lever and arranged to drive the trigger star so as to drive the lock of the auxiliary power source in the unlocked position when said trigger lever passes from its first position to its second position.

Selon un autre mode de réalisation, les deux étoiles de déclenchement sont montées sur un bâti du mouvement, et le mécanisme de déclenchement comprend une ancre de déclenchement portée par le levier de déclenchement et une étoile d'entrainement solidaire des deux étoiles de déclenchement, l'ancre de déclenchement étant agencée pour entrainer l'étoile d'entrainement et les étoiles de déclenchement de manière à entrainer alternativement les verrous de la source d'énergie auxiliaire en position déverrouillée lors de chaque passage du levier de déclenchement dans sa deuxième position tout en empêchant le positionnement dans sa position verrouillée du verrou de la source d'énergie auxiliaire qui a été entrainé tant que le levier de déclenchement est dans sa deuxième position.According to another embodiment, the two trigger stars are mounted on a frame of the movement, and the trigger mechanism comprises a trigger anchor carried by the trigger lever and a drive star integral with the two trigger stars, the anchor of release being arranged to drive the drive star and the release stars so as to alternately drive the locks of the auxiliary energy source in the unlocked position each time the release lever passes into its second position while preventing the positioning in its locked position of the latch of the auxiliary energy source which has been driven as long as the trigger lever is in its second position.

Selon un autre mode de réalisation, les deux étoiles de déclenchement sont montées sur le levier de déclenchement et agencées pour entrainer alternativement les verrous de la source d'énergie auxiliaire en position déverrouillée lorsque le levier de déclenchement passe de sa première position à sa deuxième position et pour maintenir, dans sa position déverrouillée, le verrou de la source d'énergie auxiliaire qui a été entrainé tant que le levier de déclenchement est dans sa deuxième position, et le mécanisme de déclenchement comprend une étoile de positionnement montée sur le levier de déclenchement et solidaire des étoiles de déclenchement et un cliquet d'entrainement monté sur le bâti agencé pour entrainer l'étoile de positionnement lorsque le levier de déclenchement passe de sa deuxième position à sa première position.According to another embodiment, the two trigger stars are mounted on the trigger lever and arranged to alternately drive the locks of the auxiliary energy source into the unlocked position when the trigger lever passes from its first position to its second position and for maintaining, in its unlocked position, the latch of the auxiliary power source which has been driven while the trigger lever is in its second position, and the trigger mechanism comprises a positioning star mounted on the trigger lever and secured to the trigger stars and a drive pawl mounted on the frame arranged to drive the positioning star when the trigger lever passes from its second position to its first position.

D'une manière avantageuse, le mécanisme de déclenchement comprend un premier verrou de levier de déclenchement agencé pour maintenir le levier de déclenchement dans sa première position et un deuxième verrou de levier de déclenchement agencé pour maintenir le levier de déclenchement dans une troisième position de repos intermédiaire après que le premier verrou a libéré le levier de déclenchement, et le mobile de commande comprend une première came de commande agencée pour coopérer avec le premier verrou de levier de déclenchement pour commander la libération du levier de déclenchement du premier verrou de levier de déclenchement et une deuxième came de commande agencée pour commander la libération du levier de déclenchement du deuxième verrou de levier de déclenchement.Advantageously, the trigger mechanism comprises a first trigger lever lock arranged to maintain the trigger lever in its first position and a second trigger lever lock arranged to maintain the trigger lever in a third position of rest intermediate after the first latch has released the release lever, and the control wheel set comprises a first control cam arranged to cooperate with the first release lever lock to control the release of the release lever from the first release lever lock and a second control cam arranged to control the release of the trigger lever from the second trigger lever latch.

Selon un autre mode de réalisation, le mécanisme de déclenchement comprend un premier verrou de levier de déclenchement agencé pour maintenir le levier de déclenchement dans sa première position et un deuxième verrou de levier de déclenchement agencé pour bloquer le levier de déclenchement dans une quatrième position intermédiaire lorsque ledit levier de déclenchement passe de sa deuxième position à sa première position, et le mobile de commande comprend une came de commande agencée pour coopérer avec le premier verrou de levier de déclenchement pour commander la libération du levier de déclenchement du premier verrou de levier de déclenchement pour passer de sa première position à sa deuxième position, ledit premier verrou de levier de déclenchement comprenant des moyens de commande du deuxième verrou de levier de déclenchement agencés pour commander la libération du levier de déclenchement du deuxième verrou de levier de déclenchement pour passer de sa quatrième à sa première position.According to another embodiment, the trigger mechanism comprises a first trigger lever lock arranged to maintain the trigger lever in its first position and a second trigger lever lock arranged to lock the trigger lever in a fourth intermediate position when said release lever passes from its second position to its first position, and the control wheel set comprises a control cam arranged to cooperate with the first release lever lock to control the release of the release lever from the first release lever lock release to pass from its first position to its second position, said first release lever lock comprising means for controlling the second release lever lock arranged to control the release of the release lever of the second release lever lock to pass from his fourth to his first positio not.

D'une manière avantageuse, l'organe d'actionnement est solidaire d'une roue du rouage d'entrainement auxiliaire.Advantageously, the actuating member is integral with a wheel of the auxiliary drive train.

De préférence, l'organe d'actionnement comporte au moins un bras agencé pour coopérer avec le levier de déclenchement occupant sa deuxième position.Preferably, the actuating member comprises at least one arm arranged to cooperate with the trigger lever occupying its second position.

D'une manière avantageuse, le mécanisme auxiliaire est disposé entre la source d'énergie auxiliaire et le mécanisme de verrouillage.Advantageously, the auxiliary mechanism is disposed between the auxiliary power source and the locking mechanism.

D'une manière avantageuse, le mobile de commande est lié à une aiguille des secondes.Advantageously, the control wheel is linked to a seconds hand.

De préférence, le mouvement comprend également un mécanisme isolateur du mécanisme de déclenchement agencé pour pouvoir occuper une position active dans laquelle il coopère avec ledit mécanisme de déclenchement pour le bloquer et une position inactive dans laquelle il ne coopère plus avec le mécanisme de déclenchement, le passage en position active étant commandé par le mécanisme auxiliaire lorsque ledit mécanisme auxiliaire ne doit pas être entrainé par la source d'énergie auxiliaire et le passage en position inactive étant commandé par un mécanisme de libération.Preferably, the movement also comprises an isolating mechanism of the trigger mechanism arranged to be able to occupy an active position in which it cooperates with said trigger mechanism to block it and an inactive position in which it no longer cooperates with the trigger mechanism, the passage into the active position being controlled by the auxiliary mechanism when said auxiliary mechanism must not be driven by the auxiliary energy source and the transition to the inactive position being controlled by a release mechanism.

D'une manière avantageuse, le mécanisme isolateur comprend un isolateur agencé pour pouvoir maintenir le levier de déclenchement occupant sa première position lorsqu'il est en position active et un verrou d'isolateur agencé pour maintenir l'isolateur en position inactive et pour pouvoir être commandé par le mécanisme auxiliaire afin de permettre son passage en position active.Advantageously, the isolator mechanism comprises an isolator arranged to be able to maintain the trip lever occupying its first position when it is in the active position and an isolator lock arranged to maintain the isolator in the inactive position and to be able to be controlled by the auxiliary mechanism in order to allow it to pass into the active position.

D'une manière avantageuse, le mécanisme de libération du mécanisme isolateur comprend un organe de libération de l'isolateur agencé pour pouvoir entrainer l'isolateur en position inactive lorsque le mécanisme auxiliaire peut être entrainé par la source d'énergie auxiliaire et un organe de commande agencé pour commander ledit organe de libération.Advantageously, the mechanism for releasing the insulator mechanism comprises an insulator release member arranged to be able to drive the insulator into the inactive position when the auxiliary mechanism can be driven by the auxiliary energy source and a control arranged to control said release member.

D'une manière avantageuse, le mécanisme auxiliaire est un mécanisme d'affichage.Advantageously, the auxiliary mechanism is a display mechanism.

D'autres caractéristiques et avantages de la présente invention apparaîtront à la lecture de la description détaillée suivante de différents modes de réalisation de l'invention, donnés à titre d'exemples non limitatifs, et faite en référence aux dessins annexés dans lesquels :

  • la figure 1 est une vue schématique d'un premier mode de réalisation d'un mouvement selon l'invention;
  • la figure 2 est une vue schématique d'un deuxième mode de réalisation d'un mouvement selon l'invention ;
  • les figures 3 à 7 sont des vues schématiques du mouvement de la figure 2 dans différentes positions après le début et jusqu'à la fin d'un saut du mécanisme auxiliaire ;
  • la figure 8 est une vue schématique d'un troisième mode de réalisation d'un mouvement selon l'invention ;
  • la figure 9 est une vue éclatée de l'ancre de déclenchement, des étoiles d'entrainement et de déclenchement et du mécanisme de verrouillage du mouvement de la figure 8 ;
  • la figure 10 est une vue schématique d'un mécanisme de déclenchement et d'un mécanisme de verrouillage selon un quatrième mode de réalisation de l'invention ;
  • la figure 11 est une vue schématique d'un mécanisme de déclenchement selon un cinquième mode de réalisation de l'invention ; et
  • les figures 12 à 15 sont des vues schématiques d'un mécanisme isolateur dans différentes positions occupées entre sa position inactive et sa position active, avant un retour en position inactive.
Other characteristics and advantages of the present invention will appear on reading the following detailed description of various embodiments of the invention, given by way of non-limiting examples, and made with reference to the appended drawings in which:
  • the figure 1 is a schematic view of a first embodiment of a movement according to the invention;
  • the picture 2 is a schematic view of a second embodiment of a movement according to the invention;
  • them figures 3 to 7 are schematic views of the movement of the picture 2 in different positions after the start and until the end of a jump of the auxiliary mechanism;
  • the figure 8 is a schematic view of a third embodiment of a movement according to the invention;
  • the figure 9 is an exploded view of the trigger anchor, drive and trigger stars and movement locking mechanism of the figure 8 ;
  • the figure 10 is a schematic view of a trigger mechanism and a locking mechanism according to a fourth embodiment of the invention;
  • the figure 11 is a schematic view of a trigger mechanism according to a fifth embodiment of the invention; and
  • them figures 12 to 15 are schematic views of an isolator mechanism in different occupied positions between its inactive position and its active position, before returning to the inactive position.

En référence à la figure 1, la présente invention concerne un mouvement horloger comprenant une source d'énergie principale 1, telle qu'un barillet principal, alimentant en énergie un mouvement de base indiquant le temps courant. Le mouvement peut comprendre d'autres mécanismes, par exemple un mécanisme de chronographe, alimentés en énergie par le barillet principal. Le mouvement comprend également une source d'énergie auxiliaire 2, telle qu'un barillet auxiliaire ou une lame ressort, liée cinématiquement à un mécanisme auxiliaire du mouvement par l'intermédiaire d'un rouage d'entrainement auxiliaire 3. Le mécanisme auxiliaire est agencé pour fonctionner par saut. Dans les exemples décrits ici, le mécanisme auxiliaire est un mécanisme d'affichage sautant d'un mécanisme de chronographe, et plus particulièrement un disque d'affichage sautant des unités de minutes 4 d'un mécanisme de chronographe standard ou d'un chronographe compte à rebours. Ce disque d'affichage des unités de minutes 4 est solidaire d'une roue d'affichage 4a qui entraine l'organe d'affichage des dizaines de minutes, entrainant lui-même l'organe d'affichage des heures, par exemple au moyen de doigts d'actionnement et d'étoiles coopérant pour faire sauter l'organe d'affichage correspondant à chaque changement de dizaine de minutes ou d'heure. Il est bien évident que les disques d'affichage peuvent être remplacés par des aiguilles.With reference to the figure 1 , the present invention relates to a watch movement comprising a main energy source 1, such as a main barrel, supplying energy to a basic movement indicating the current time. The movement may include other mechanisms, for example a chronograph mechanism, powered by the main barrel. The movement also includes an auxiliary energy source 2, such as an auxiliary barrel or a leaf spring, kinematically linked to an auxiliary mechanism of the movement via an auxiliary drive train 3. The auxiliary mechanism is arranged to operate by jump. In the examples described here, the auxiliary mechanism is a jumping display mechanism of a chronograph mechanism, and more particularly a jumping display disc of 4 minute units of a standard chronograph mechanism or a counting chronograph backwards. This minute units display disc 4 is secured to a display wheel 4a which drives the tens of minutes display member, itself driving the hours display member, for example by means of actuating fingers and stars cooperating to cause the display member corresponding to each change of ten minutes or hour. It is obvious that the display discs can be replaced by needles.

La source d'énergie auxiliaire 2 est verrouillée par intermittence par un mécanisme de verrouillage 5, disposé de telle sorte que le mécanisme auxiliaire, et notamment la roue d'affichage 4a du disque d'affichage 4, est positionné, dans la chaine cinématique reliant la source d'énergie auxiliaire 2 au mécanisme de verrouillage 5, entre ladite source d'énergie auxiliaire 2 et ledit mécanisme de verrouillage 5.The auxiliary energy source 2 is locked intermittently by a locking mechanism 5, arranged in such a way that the auxiliary mechanism, and in particular the display wheel 4a of the display disc 4, is positioned, in the kinematic chain connecting the auxiliary power source 2 to the locking mechanism 5, between said auxiliary power source 2 and said locking mechanism 5.

Le mécanisme de verrouillage 5 est agencé pour évoluer alternativement entre une position verrouillée dans laquelle il bloque la source d'énergie auxiliaire 2 et une position déverrouillée dans laquelle il a libéré la source d'énergie auxiliaire 2 et la laisse tourner. Cela permet au disque d'affichage 4 d'être sautant, sans prélever trop d'énergie à la source d'énergie principale 1.The locking mechanism 5 is arranged to move alternately between a locked position in which it locks the auxiliary power source 2 and an unlocked position in which it has released the auxiliary power source 2 and lets it rotate. This allows the display disc 4 to be jumpy, without drawing too much energy from the main energy source 1.

Afin de pouvoir commander le déverrouillage par intermittence de la source d'énergie auxiliaire 2, il est prévu un mécanisme de déclenchement 6 du mécanisme de verrouillage 5 et au moins un mobile de commande 8 entrainé par la source d'énergie principale 1. Le mécanisme de déclenchement 6 est agencé pour évoluer entre une première position de repos et une deuxième position maximale, et pour coopérer avec le mécanisme de verrouillage 5 pour l'entrainer de sa position verrouillée à sa position déverrouillée lorsque ledit mécanisme de déclenchement 6 passe de sa première position à sa deuxième position. Le mobile de commande 8 comprend au moins une came de commande 8a agencée pour coopérer avec le mécanisme de déclenchement 6 pour permettre son passage de sa première position à sa deuxième position lorsque le mécanisme auxiliaire doit être entrainé par la source d'énergie auxiliaire 2 qui doit alors être déverrouillée et libérée.In order to be able to control the intermittent unlocking of the auxiliary energy source 2, there is provided a trigger mechanism 6 of the locking mechanism 5 and at least one control mobile 8 driven by the main energy source 1. The mechanism trigger 6 is arranged to move between a first rest position and a second maximum position, and to cooperate with the locking mechanism 5 to drive it from its locked position to its unlocked position when said trigger mechanism 6 passes from its first position to its second position. The control wheel set 8 comprises at least one control cam 8a arranged to cooperate with the trigger mechanism 6 to allow it to pass from its first position to its second position when the auxiliary mechanism must be driven by the auxiliary energy source 2 which must then be unlocked and released.

Le mobile de commande 8 est ici lié à une aiguille des secondes du chronographe, entrainée par la source d'énergie principale 1. Il est donc configuré pour faire un tour par minute de manière à libérer la source d'énergie auxiliaire 2 une fois par minute pour faire sauter le disque d'affichage 4 toutes les minutes. Il est bien évident que cette fréquence peut être différente, en fonction du mécanisme auxiliaire.The control mobile 8 is here linked to a seconds hand of the chronograph, driven by the main energy source 1. It is therefore configured to make one revolution per minute so as to release the auxiliary energy source 2 once per minute to cause display disc 4 to jump every minute. It is obvious that this frequency can be different, depending on the auxiliary mechanism.

Conformément à l'invention, il est également prévu un organe d'actionnement 10 lié cinématiquement à la source d'énergie auxiliaire 2 et agencé pour coopérer avec le mécanisme de déclenchement 6 lorsqu'il occupe sa deuxième position pour pouvoir le repositionner dans sa première position tant que ledit organe d'actionnement 10 est alimenté en énergie et entrainé par la source d'énergie auxiliaire 2, c'est-à-dire avant que le mécanisme de verrouillage 5 ne repasse dans sa position verrouillée.In accordance with the invention, there is also provided an actuation member 10 kinematically linked to the auxiliary energy source 2 and arranged to cooperate with the trigger mechanism 6 when it occupies its second position in order to be able to reposition it in its first position as said actuating member 10 is supplied with energy and driven by the auxiliary energy source 2, that is to say before the locking mechanism 5 returns to its locked position.

Dans le mode de réalisation représenté sur la figure 1, l'organe d'actionnement 10 est solidaire de la roue d'affichage 4a et se présente sous la forme d'une étoile coaxiale à ladite roue d'affichage 4a et comprenant dix bras d'actionnement 10a dont le rôle sera expliqué ci-après.In the embodiment shown in the figure 1 , the actuating member 10 is integral with the display wheel 4a and is in the form of a star coaxial with said display wheel 4a and comprising ten actuating arms 10a whose role will be explained below. after.

Le mécanisme de déclenchement 6 comprend un levier de déclenchement 12 monté pivotant en A pour pouvoir pivoter dans le sens antihoraire de sa première position de repos à sa deuxième position angulaire maximale. Le levier de déclenchement est contraint dans sa position de repos par un ressort 14.The trigger mechanism 6 comprises a trigger lever 12 pivotally mounted at A to be able to pivot counterclockwise from its first rest position to its second maximum angular position. The trigger lever is forced into its rest position by a spring 14.

Le levier de déclenchement 12 présente une excroissance 12a positionnée de sorte que, lorsque le levier de déclenchement 12 occupe sa deuxième position, ladite excroissance 12a se trouve dans la course de l'un des bras d'actionnement 10a de l'organe d'actionnement 10 lorsqu'il sera entrainé en rotation, permettant audit bras d'actionnement 10a de l'organe d'actionnement 10 de coopérer avec le levier de déclenchement 12 pour le faire pivoter et le ramener dans sa première position de repos.The trigger lever 12 has a projection 12a positioned so that, when the trigger lever 12 occupies its second position, said projection 12a is in the path of one of the actuating arms 10a of the actuating member 10 when it is rotated, allowing said actuating arm 10a of the actuating member 10 to cooperate with the trigger lever 12 to rotate and return it to its first rest position.

Un cliquet de déclenchement 16, dont le rôle sera précisé ci-après, est monté pivotant sur l'extrémité du levier de déclenchement 12 en direction du mécanisme de verrouillage 5.A trigger pawl 16, whose role will be specified below, is pivotally mounted on the end of the trigger lever 12 in the direction of the locking mechanism 5.

Le mécanisme de déclenchement 6 comprend également un verrou de levier de déclenchement 18 monté pivotant en B, agencé pour maintenir le levier de déclenchement 12 dans sa première position et pour pouvoir être commandé par la came de commande 8a du mobile de commande 8 pour pivoter en B et libérer ledit levier de déclenchement 12 afin de permettre son passage de sa première position à sa deuxième position sous l'action de son ressort 14.The trigger mechanism 6 also comprises a trigger lever lock 18 pivotally mounted at B, arranged to hold the trigger lever 12 in its first position and to be able to be controlled by the control cam 8a of the control wheel set 8 to pivot in B and release said trigger lever 12 to allow it to pass from its first position to its second position under the action of its spring 14.

Le mécanisme de déclenchement 6 comprend également une étoile de déclenchement 20, qui dans ce mode de réalisation, est montée pivotante sur un élément du bâti du mouvement. L'étoile de déclenchement 20 est agencée pour être commandée et entrainée par le cliquet de déclenchement 16 du levier de déclenchement 12 dans le sens horaire pour entrainer le mécanisme de verrouillage 5 en position déverrouillée au cours du passage du levier de déclenchement 12 de sa première position à sa deuxième position. A cet effet, l'étoile de déclenchement 20 est solidaire d'une étoile d'entrainement 22 agencée pour être actionnée par le cliquet de déclenchement 16 lorsque le levier de déclenchement 12 passe de sa première position à sa deuxième position.The trigger mechanism 6 also includes a star trigger 20, which in this embodiment is pivotally mounted on an element of the movement frame. The trigger star 20 is arranged to be controlled and driven by the trigger pawl 16 of the trigger lever 12 in the clockwise direction to drive the locking mechanism 5 in the unlocked position during the passage of the trigger lever 12 from its first position to its second position. To this end, the trigger star 20 is integral with a drive star 22 arranged to be actuated by the trigger pawl 16 when the trigger lever 12 passes from its first position to its second position.

Le mécanisme de verrouillage 5 comprend, dans ce mode de réalisation, un verrou 24 de la source d'énergie auxiliaire 2 et une came de verrouillage 26 de la source d'énergie auxiliaire 2, montés pivotants sur le bâti.The locking mechanism 5 comprises, in this embodiment, a lock 24 of the auxiliary energy source 2 and a locking cam 26 of the auxiliary energy source 2, pivotally mounted on the frame.

Le verrou 24 est agencé pour coopérer d'une part avec la came de verrouillage 26 qui vient en butée sur son bec 24a lorsque le mécanisme de verrouillage 5 est en position verrouillée et d'autre part avec le mécanisme de déclenchement 6 en étant entrainé par l'étoile de déclenchement 20 pour pivoter dans le sens antihoraire et se soulever afin de passer de sa position verrouillée à sa position déverrouillée en libérant la came de verrouillage 26.The lock 24 is arranged to cooperate on the one hand with the locking cam 26 which comes into abutment on its beak 24a when the locking mechanism 5 is in the locked position and on the other hand with the trigger mechanism 6 being driven by the trigger star 20 to pivot counterclockwise and lift to pass from its locked position to its unlocked position by releasing the locking cam 26.

La came de verrouillage 26 est solidaire d'une roue 28 liée cinématiquement à la source d'énergie auxiliaire 2 par un renvoi 30 engrenant avec la roue d'affichage 4a. Ainsi la came de verrouillage 26 déverrouillée peut être entrainée par la source d'énergie auxiliaire 2 libérée et tourner dans le sens antihoraire afin de revenir de la position déverrouillée à la position verrouillée, en butée contre le bec 24a du verrou 24.The locking cam 26 is secured to a wheel 28 linked kinematically to the auxiliary power source 2 by a transmission 30 meshing with the display wheel 4a. Thus the unlocked locking cam 26 can be driven by the released auxiliary energy source 2 and rotate in the direction counterclockwise in order to return from the unlocked position to the locked position, in abutment against the beak 24a of the lock 24.

En plus de ceux déjà décrits, tous les éléments tels que bascules, leviers, verrous des différents mécanismes décrits ci-dessus sont soumis à leurs propres ressorts de rappel non représentés.In addition to those already described, all the elements such as rockers, levers, locks of the various mechanisms described above are subject to their own return springs, not shown.

Le fonctionnement du mouvement est le suivant : entre deux sauts du disque d'affichage 4, le levier de déclenchement 12 est dans sa première position de repos maintenu par le verrou de levier de déclenchement 18 et le mécanisme de verrouillage 5 est en position verrouillée, la came de verrouillage 26 étant en butée contre le verrou 24, comme représenté sur la figure 1. La source d'énergie auxiliaire 2 est bloquée, le couple qu'elle exerce étant retenu par le mécanisme de verrouillage 5.The operation of the movement is as follows: between two jumps of the display disc 4, the trigger lever 12 is in its first rest position held by the trigger lever lock 18 and the locking mechanism 5 is in the locked position, the locking cam 26 being in abutment against the lock 24, as shown in the figure 1 . The auxiliary power source 2 is blocked, the torque it exerts being retained by the locking mechanism 5.

Au moment du changement d'unité de minute, le mobile de commande 8 porté par l'aiguille des secondes et tournant dans le sens antihoraire, actionne par sa came de commande 8a le verrou de levier de déclenchement 18 et le fait pivoter dans le sens horaire en libérant le levier de déclenchement 12. Durant cette phase, la came de commande 8a doit vaincre majoritairement le frottement entre le verrou de levier de déclenchement 18 et le levier de déclenchement 12. Celui-ci, sous l'action de son ressort 14, pivote en A dans le sens antihoraire de sa première position de repos à sa deuxième position angulaire maximale, permettant à son cliquet 16 d'entrainer d'un pas dans le sens horaire l'étoile d'entrainement 22 et donc l'étoile de déclenchement 20. L'étoile de déclenchement 20 actionne le verrou 24 en le faisant basculer dans le sens antihoraire de sorte que le verrou 24 se soulève et se dégage de la came de verrouillage 26 pour atteindre la position déverrouillée. De ce fait, le couple de la source d'énergie auxiliaire 2 est libéré, ce qui met en rotation la roue d'affichage 4a dans le sens antihoraire par l'intermédiaire du rouage d'entrainement auxiliaire 3. Lors de sa rotation, la roue d'affichage 4a entraine l'organe d'actionnement 10 de sorte que l'un de ses bras 10a vient coopérer avec l'excroissance 12a du levier de déclenchement 12 arrivé dans sa deuxième position et entraine le levier de déclenchement 12 dans le sens horaire jusqu'à ce qu'il reprenne sa première position, de nouveau verrouillé par son verrou 18. En parallèle, la came de verrouillage 26 est entrainée en rotation dans le sens antihoraire par la source d'énergie auxiliaire, par l'intermédiaire du renvoi 30 et de la roue 28, d'un tour de sorte que la came de verrouillage 26 revient en butée contre le verrou 24, lui-même ramené par son ressort de rappel, de sorte que le mécanisme de verrouillage est de nouveau en position verrouillée.At the time of the minute unit change, the control wheel set 8 carried by the seconds hand and rotating in the counterclockwise direction, actuates by its control cam 8a the release lever lock 18 and causes it to pivot in the direction clockwise by releasing the trigger lever 12. During this phase, the control cam 8a must mainly overcome the friction between the trigger lever lock 18 and the trigger lever 12. The latter, under the action of its spring 14 , pivots at A in the counterclockwise direction from its first rest position to its second maximum angular position, allowing its pawl 16 to drive the drive starwheel 22 by one step clockwise and therefore the trigger 20. The trigger star 20 actuates the latch 24 by tilting it counterclockwise so that the latch 24 lifts and disengages from the latch cam 26 to reach the unlocked position. As a result, the torque of the auxiliary power source 2 is released, which rotates the display wheel 4a counterclockwise via the auxiliary drive train 3. During its rotation, the display wheel 4a drives the actuating member 10 so that one of its arms 10a cooperates with the protrusion 12a of the lever trigger 12 arrived in its second position and drives the trigger lever 12 clockwise until it returns to its first position, again locked by its lock 18. In parallel, the locking cam 26 is driven in rotation in the counterclockwise direction by the auxiliary energy source, through the intermediate gear 30 and the wheel 28, of one turn so that the locking cam 26 comes back into abutment against the lock 24, itself brought back by its return spring, so that the locking mechanism is again in the locked position.

Ainsi, le levier de déclenchement 12 est repositionné dans sa première position grâce au couple fourni par la source d'énergie auxiliaire 2 encore libre de tourner, afin de vaincre le ressort 14 du levier de déclenchement 12, avant que le mécanisme de verrouillage ne repasse dans sa position verrouillée. Le mécanisme est prêt pour un nouveau saut.Thus, the release lever 12 is repositioned in its first position thanks to the torque supplied by the auxiliary energy source 2 still free to rotate, in order to overcome the spring 14 of the release lever 12, before the locking mechanism returns in its locked position. The mechanism is ready for a new leap.

En référence aux figures 2 à 7, il est représenté un deuxième mode de réalisation de l'invention. Les éléments identiques à ceux du premier mode de réalisation sont désignés par les mêmes références.With reference to figures 2 to 7 , there is shown a second embodiment of the invention. The elements identical to those of the first embodiment are designated by the same references.

Dans cette variante, l'organe d'actionnement 10 est une étoile à six bras 10a solidaire d'une roue 3a du rouage d'entrainement auxiliaire 3. Chaque bras 10a est agencé pour coopérer avec l'excroissance 12a prévue latéralement sur le levier de déclenchement 12. La roue d'affichage 4a est toujours inscrite dans la chaine cinématique entre la source d'énergie auxiliaire 2 et le mécanisme de verrouillage 5.In this variant, the actuating member 10 is a star wheel with six arms 10a secured to a wheel 3a of the auxiliary drive train 3. Each arm 10a is arranged to cooperate with the protrusion 12a provided laterally on the lever of trigger 12. The display wheel 4a is still inscribed in the kinematic chain between the auxiliary energy source 2 and the locking mechanism 5.

Afin de sécuriser le fonctionnement lors du retour en première position de repos du levier de déclenchement 12, le mécanisme de déclenchement 6 comprend deux verrous de levier de déclenchement 18', 18" superposés et montés pivotants en B indépendamment l'un de l'autre, à savoir un premier verrou de levier de déclenchement 18' agencé pour maintenir le levier de déclenchement 12 dans sa première position de repos et un deuxième verrou de levier de déclenchement 18" agencé pour maintenir le levier de déclenchement 12 dans une troisième position angulaire de repos intermédiaire entre la première position de repos et la deuxième position angulaire maximale, après que le premier verrou 18' a libéré le levier de déclenchement 12. A cet effet, chaque verrou de levier de déclenchement 18', 18" comprend, à son extrémité opposée à celle coopérant avec le mobile de commande 8, une échancrure 18a dans laquelle peut se loger le pied 12b du levier de déclenchement 12 lorsqu'il est dans l'une des première ou troisième positions de repos. Chaque échancrure 18a est terminée par un crochet 18b contre lequel ledit pied 12b du levier de déclenchement 12 vient en butée, le crochet du premier verrou 18' étant agencé pour maintenir le pied12b du levier de déclenchement 12 dans sa première position de repos, et le crochet du deuxième verrou 18" étant décalé par rapport au crochet du premier verrou 18' de manière à maintenir le pied 12b du levier de déclenchement 12 lorsque celui-ci a pivoté dans sa troisième position de repos intermédiaire. La forme du pied 12b est prévue pour que le pied 12b repose sur le bord du crochet 18b du premier verrou de levier de déclenchement 18' lorsque le levier de déclenchement 12 est complètement libéré, entre sa troisième position de repos intermédiaire et sa deuxième position angulaire maximale.In order to secure operation when the release lever 12 returns to the first rest position, the release mechanism 6 comprises two release lever locks 18', 18" superimposed and pivotally mounted at B independently of each other. , namely a first release lever lock 18′ arranged to hold the release lever 12 in its first rest position and a second release lever lock 18″ arranged to hold the release lever 12 in a third intermediate rest angular position between the first rest position and the second maximum angular position, after the first lock 18' has released the trigger lever 12. To this end, each trigger lever lock 18', 18" comprises, at its end opposite to that cooperating with the mobile control 8, a notch 18a in which the foot 12b of the trigger lever 12 can be housed when it is in one of the first or third rest positions. 18a ends with a hook 18b against which said foot 12b of the trigger lever 12 comes into abutment, the hook of the first latch 18' being arranged to hold the foot 12b of the trigger lever 12 in its first rest position, and the hook of the second latch 18" being offset with respect to the hook of the first latch 18' so as to hold the foot 12b of the trigger lever 12 when the latter has pivoted into its third rest position s intermediate. The shape of the foot 12b is provided so that the foot 12b rests on the edge of the hook 18b of the first release lever lock 18' when the release lever 12 is completely released, between its third intermediate rest position and its second angular position. maximum.

De plus, le mobile de commande 8 comprend deux cames de commande 8', 8" superposées et déphasées ici de 180°. Un autre angle de déphasage est possible.In addition, the control wheel set 8 comprises two control cams 8', 8" which are superimposed and phase shifted here by 180°. Another phase shift angle is possible.

Dans le mode de réalisation de la figure 2, la première came de commande 8' est agencée pour coopérer avec le premier verrou de levier de déclenchement 18' en le faisant pivoter en B pour libérer le pied 12b du levier de déclenchement 12 du crochet 18b du premier verrou de levier de déclenchement 18' afin de permettre audit levier de déclenchement 12, sous l'action de son ressort, de pivoter en A de sa première position de repos à sa troisième position de repos intermédiaire, selon laquelle son pied 12b bute contre le crochet 18b du deuxième verrou de levier de déclenchement 18". La deuxième came de commande 8" est agencée pour coopérer avec le deuxième verrou de levier de déclenchement 18" en le faisant pivoter en B pour libérer ensuite le pied 12b du levier de déclenchement 12 du crochet 18b du deuxième verrou de levier de déclenchement 18" afin de permettre au levier de déclenchement 12, toujours sous l'action de son ressort, de continuer à pivoter en A de sa troisième position de repos à sa deuxième position maximale.In the embodiment of the figure 2 , the first control cam 8' is arranged to cooperate with the first release lever lock 18' by pivoting it at B to release the foot 12b of the release lever 12 from the hook 18b of the first release lever lock 18' in order to allow said trigger lever 12, under the action of its spring, to pivot at A from its first rest position to its third intermediate rest position, in which its foot 12b abuts against the hook 18b of the second lever lock trigger 18". The second control cam 8" is arranged to cooperate with the second trigger lever lock 18" by pivoting it at B to then release the foot 12b of the trigger lever 12 from the hook 18b of the second trigger lever lock 18" in order to allow the trigger lever 12, still under the action of its spring, to continue to pivot in A from its third rest position to its second maximum position.

Un autre mode de réalisation des verrous de levier de déclenchement est représenté sur la figure 11. Dans cette variante, il est prévu un premier verrou de levier de déclenchement 18', monté pivotant en B, et agencé pour maintenir le levier de déclenchement 12 dans sa première position de repos, ainsi qu'un deuxième verrou de levier de déclenchement 18" monté également pivotant en B. Le deuxième verrou 18" comprend un bras 32 agencé pour s'engager dans une encoche 34 prévue à l'arrière du pied 12b du levier de déclenchement 12 lorsque ledit levier de déclenchement 12, revenant de sa deuxième position, passe par une quatrième position intermédiaire avant de retrouver sa première position de repos. Le deuxième verrou 18" est pourvu d'un ressort 36. Le premier verrou de levier de déclenchement 18' porte des moyens de commande du deuxième verrou 18" constitués ici par une goupille de liaison 38 agencée pour coopérer avec un bec 40 du deuxième verrou 18" afin de faire pivoter ledit deuxième verrou 18" pour l'escamoter de l'encoche 34 lorsque le premier verrou 18', une fois quitté par la came 8a, est ramené dans sa position initiale sous l'action de son propre ressort de rappel, pour verrouiller ledit levier de déclenchement 12 dans sa première position de repos.Another embodiment of the trigger lever locks is shown in the figure 11 . In this variant, there is provided a first release lever lock 18 ', pivotally mounted at B, and arranged to hold the release lever 12 in its first rest position, as well as a second release lever lock 18 " also pivotally mounted at B. The second lock 18" comprises an arm 32 arranged to engage in a notch 34 provided at the rear of the foot 12b of the release lever 12 when said release lever 12, returning from its second position, passes through a fourth intermediate position before returning to its first rest position. The second latch 18" is provided with a spring 36. The first trigger lever latch 18' carries means for controlling the second latch 18" constituted here by a connecting pin 38 arranged to cooperate with a beak 40 of the second latch 18" in order to pivot said second latch 18" to retract it from the notch 34 when the first latch 18', once released by the cam 8a, is returned to its initial position under the action of its own spring recall, to lock said trigger lever 12 in its first rest position.

De plus, le mobile de commande 8 comprend une seule came de commande 8a, pivotant dans le sens antihoraire, et agencée pour coopérer avec le premier verrou de levier de déclenchement 18' en le faisant pivoter en B dans le sens horaire pour libérer le pied 12b du levier de déclenchement 12 du crochet 18b du premier verrou de levier de déclenchement 18' afin de permettre au levier de déclenchement 12 de pivoter dans le sens antihoraire de sa première position de repos à sa deuxième position maximale. Lorsque le levier de déclenchement 12 est ramené dans sa première position de repos, il pivote dans le sens horaire jusqu'à sa quatrième position intermédiaire dans laquelle le bras 32 du deuxième verrou de levier de déclenchement 18" s'engage dans l'encoche 34 dudit levier de déclenchement 12 de manière à bloquer et à verrouiller le levier de déclenchement 12 par le deuxième verrou 18" tant que la came de commande 8a n'a pas quitté le premier verrou 18'. Une fois que la came de commande 8a a quitté ledit premier verrou 18', celui-ci pivote dans le sens antihoraire rappelé par son ressort dans sa position de repos, de sorte que sa goupille 38 appuie sur le bec 40 du deuxième verrou 18" en le faisant pivoter dans le sens antihoraire pour l'escamoter du pied 12b du levier de déclenchement 12. Celui-ci est alors libéré du deuxième verrou 18" pour passer de sa quatrième position à sa première position de repos dans laquelle il est de nouveau verrouillé par le premier verrou 18' jusqu'au prochain saut.In addition, the control wheel set 8 comprises a single control cam 8a, pivoting counterclockwise, and arranged to cooperate with the first release lever lock 18' by pivoting it at B in the clockwise direction to release the foot 12b of the trigger lever 12 of the hook 18b of the first trigger lever lock 18' in order to allow the trigger lever 12 to pivot counterclockwise from its first rest position to its second maximum position. When the trigger lever 12 is returned to its first rest position, it pivots clockwise to its fourth intermediate position in which the arm 32 of the second release lever lock 18" engages in the notch 34 of said release lever 12 so as to block and lock the trigger lever 12 by the second lock 18" as long as the control cam 8a has not left the first lock 18'. Once the control cam 8a has left said first latch 18', the latter pivots in the counterclockwise direction brought back by its spring into its rest position, so that its pin 38 presses on the beak 40 of the second latch 18" by pivoting it counterclockwise to retract it from the foot 12b of the trigger lever 12. The latter is then released from the second lock 18" to pass from its fourth position to its first rest position in which it is again locked by the first lock 18' until the next jump.

Ce mécanisme permet de synchroniser le positionnement des verrous de levier de déclenchement 18', 18" avec les positions du levier de déclenchement 12.This mechanism makes it possible to synchronize the positioning of the trigger lever locks 18', 18" with the positions of the trigger lever 12.

En référence de nouveau à la figure 2, le mécanisme de verrouillage 5 comprend dans ce mode de réalisation deux verrous 24', 24" de la source d'énergie auxiliaire 2 et deux cames de verrouillage 26', 26" de la source d'énergie auxiliaire 2, chacune étant associée à son verrou 26', 26" de la source d'énergie auxiliaire 2 respectif.With reference again to the figure 2 , the locking mechanism 5 comprises in this embodiment two locks 24', 24" of the auxiliary energy source 2 and two locking cams 26', 26" of the auxiliary energy source 2, each being associated with its lock 26', 26" from the respective auxiliary power source 2.

Les deux verrous 24', 24" sont montés pivotants l'un au-dessus de l'autre. Les deux cames de verrouillage 26', 26" sont montées solidaires sur la roue 28 et superposées de manière à être déphasées l'une par rapport à l'autre de 180°.The two locks 24', 24" are pivotally mounted one above the other. The two locking cams 26', 26" are integrally mounted on the wheel 28 and superimposed so as to be out of phase with each other. relative to the other by 180°.

Le mécanisme de déclenchement 6 est adapté en conséquence, et comprend deux étoiles de déclenchement 20', 20" montées pivotantes sur le bâti, chacune étant associée à son verrou 24', 24" respectif. Lesdites étoiles de déclenchement 20', 20" sont montées solidaires de l'étoile d'entrainement 22 entrainée par le cliquet de déclenchement 16 à chaque passage en deuxième position du levier de déclenchement 12. Les étoiles de déclenchement 20', 20" sont déphasées l'une par rapport à l'autre d'un pas de manière à entrainer alternativement les verrous 24', 24" de la source d'énergie auxiliaire 2 en position déverrouillée à chaque passage en deuxième position du levier de déclenchement 12.The trigger mechanism 6 is adapted accordingly, and comprises two trigger stars 20', 20" pivotally mounted on the frame, each being associated with its respective lock 24', 24". Said trigger stars 20', 20" are mounted integral with the drive star 22 driven by the trigger pawl 16 each time it goes into second gear. position of the trigger lever 12. The trigger stars 20', 20" are out of phase with respect to each other by one step so as to alternately drive the locks 24', 24" of the auxiliary energy source 2 in the unlocked position each time the release lever 12 passes into the second position.

Chacun des verrous 24', 24" coopère respectivement d'une part avec sa came de verrouillage 26', 26" qui vient en butée sur le bec 24a de son verrou respectif 24', 24" lorsque le mécanisme de verrouillage 5 est en position verrouillée et d'autre part avec son étoile de déclenchement 20', 20" pour pivoter et se soulever alternativement afin de passer d'une position verrouillée à une position déverrouillée en libérant sa came de verrouillage 26', 26", comme décrit ci-dessus en référence à la figure 1 avec un seul verrou 24, une seule came de verrouillage 26 et une seule étoile de déclenchement 20.Each of the locks 24', 24" cooperates respectively on the one hand with its locking cam 26', 26" which comes into abutment on the beak 24a of its respective lock 24', 24" when the locking mechanism 5 is in position locked and on the other hand with its trigger star 20', 20" to pivot and lift alternately in order to pass from a locked position to an unlocked position by releasing its locking cam 26', 26", as described below above with reference to the figure 1 with a single lock 24, a single locking cam 26 and a single trigger star 20.

En référence aux figures 3 à 7, le fonctionnement de ce mouvement dans ce mode de réalisation de la figure 2 est le suivant : entre deux sauts du disque d'affichage 4, le levier de déclenchement 12 est dans sa première position de repos maintenu par le crochet 18b du premier verrou de levier de déclenchement 18' et le mécanisme de verrouillage 5 est en position verrouillée, la came de verrouillage 26' étant en butée contre son verrou 24', l'autre came de verrouillage 26" étant positionnée à 180°, comme représenté sur la figure 2. La source d'énergie auxiliaire 2 est bloquée, le couple qu'elle exerce étant retenu par le mécanisme de verrouillage 5.With reference to figures 3 to 7 , the operation of this movement in this embodiment of the figure 2 is as follows: between two jumps of the display disc 4, the trigger lever 12 is in its first rest position held by the hook 18b of the first trigger lever lock 18' and the locking mechanism 5 is in the locked position , the locking cam 26' being in abutment against its lock 24', the other locking cam 26" being positioned at 180°, as shown in the picture 2 . The auxiliary power source 2 is blocked, the torque it exerts being retained by the locking mechanism 5.

Au moment du changement d'unité de minute, le mobile de commande 8 porté par l'aiguille des secondes et tournant dans le sens antihoraire, actionne par sa came de commande 8' le premier verrou de levier de déclenchement 18' et le fait pivoter dans le sens horaire en libérant le levier de déclenchement 12 de son crochet 18b. Le levier de déclenchement 12, sous l'action de son ressort, pivote en A dans le sens antihoraire de sa première position de repos à sa troisième position de repos intermédiaire, en venant en appui sur le crochet 18b du deuxième verrou de levier de déclenchement 18", comme le montre la figure 3.At the time of the minute unit change, the control wheel 8 carried by the seconds hand and rotating counterclockwise, actuates by its control cam 8' the first release lever lock 18' and causes it to pivot clockwise by releasing the release lever 12 from its hook 18b. The trigger lever 12, under the action of its spring, pivots at A counterclockwise from its first rest position to its third intermediate rest position, coming to rest on the hook 18b of the second release lever lock 18", as shown in the picture 3 .

Les verrous 18' et 18" ont leurs propres ressorts de rappel qui les ramènent à leur position initiale. Une fois la came de commande 8' passée, le premier verrou 18', sous l'action de son ressort, tend à reprendre sa position de départ mais vient en contact et frotte sous le pied 12b du levier de déclenchement 12. Il conserve un préarmage permettant le blocage du pied 12b au prochain retour du levier de déclenchement 12.The locks 18' and 18" have their own return springs which bring them back to their initial position. Once the control cam 8' has passed, the first lock 18', under the action of its spring, tends to return to its position of departure but comes into contact and rubs under the foot 12b of the trigger lever 12. It retains a prewinding allowing the blocking of the foot 12b on the next return of the trigger lever 12.

Puis le mobile de commande 8 poursuivant sa rotation dans le sens antihoraire, la deuxième came de commande 8" vient au contact du deuxième verrou de levier de déclenchement 18" et le fait pivoter dans le sens horaire en libérant le levier de déclenchement 12 de son crochet 18b, comme le montre la figure 4. Le levier de déclenchement 12 étant complètement libéré, peut continuer à pivoter en A dans le sens antihoraire.Then the control mobile 8 continuing to rotate counterclockwise, the second control cam 8" comes into contact with the second release lever lock 18" and causes it to pivot clockwise, releasing the release lever 12 from its hook 18b, as shown in figure 4 . The trigger lever 12 being completely released, can continue to pivot at A counterclockwise.

Comme le montre la figure 5, dans la phase de rotation du levier de déclenchement 12 dans le sens antihoraire, le cliquet 16, porté par ledit levier de déclenchement 12, met en rotation l'étoile d'entrainement 22, et donc les étoiles de déclenchement 20', 20", dans le sens horaire. La rotation des étoiles de déclenchement 20', 20" entraine alternativement la rotation dans le sens antihoraire des verrous 24', 24" de la source d'énergie auxiliaire 2, et donc la libération en alternance des cames de verrouillage 26', 26". Ici, l'étoile de déclenchement 20' soulève le verrou 24' dans sa position déverrouillée, libérant ainsi la came de verrouillage 26'. Par conséquent tous les éléments de la chaine cinématique entre les cames de verrouillage 26', 26" et la source d'énergie auxiliaire 2 sont libérés, ladite source d'énergie auxiliaire 2 étant alors libre de tourner pour entrainer la roue 4a du disque 4. La roue d'affichage 4a alimentée par la source d'énergie auxiliaire 2 via le rouage d'entrainement 3 est entrainée en rotation dans le sens antihoraire. En parallèle, les cames de verrouillage 26', 26" sont mises en rotation avec la roue 28 dans le sens antihoraire par le couple exercé par la source d'énergie auxiliaire 2. L'agencement des cames de verrouillage 26', 26" à 180° leur permet de faire une rotation d'un demi-tour seulement, avant d'être de nouveau bloquées par la came de verrouillage 26" contre son verrou 24" comme cela sera vu ci-après, afin de garantir le saut d'un pas de la roue d'affichage 4a et du disque d'affichage des unités de minutes 4.As shown in figure 5 , in the phase of rotation of the trigger lever 12 counterclockwise, the pawl 16, carried by said trigger lever 12, rotates the drive star 22, and therefore the trigger stars 20 ', 20 " The rotation of the trigger stars 20', 20" alternately causes the counterclockwise rotation of the locks 24', 24" of the auxiliary energy source 2, and therefore the alternate release of the cams of 26' lock, 26". Here, trigger star 20' raises latch 24' to its unlocked position, thereby releasing locking cam 26'. Consequently, all the elements of the kinematic chain between the locking cams 26', 26" and the auxiliary energy source 2 are released, said auxiliary energy source 2 then being free to rotate to drive the wheel 4a of the disc 4 The display wheel 4a powered by the auxiliary power source 2 via the drive train 3 is rotated counterclockwise. In parallel, the locking cams 26', 26" are rotated with the wheel 28 counterclockwise by torque exerted by the auxiliary power source 2. The arrangement of the locking cams 26', 26" at 180° allows them to rotate only half a turn, before being again locked by the locking cam. lock 26" against its lock 24" as will be seen below, in order to guarantee the jump of one step of the display wheel 4a and of the minute units display disc 4.

Pendant que la source auxiliaire 2 fournit de l'énergie au mécanisme auxiliaire en entrainant en rotation les différents éléments, et notamment le rouage d'entrainement 3 avec la roue 3a portant l'organe d'actionnement 10, le levier de déclenchement 12, sous l'action de son ressort 14, continue de pivoter dans le sens antihoraire, pour atteindre sa deuxième position angulaire maximale, sur une butée (non représentée), comme le montre la figure 6. Dans cette position angulaire maximale, l'excroissance 12a du levier de déclenchement 12 se trouve dans la course de l'un des bras 10a de l'organe d'actionnement 10. Le pied 12b du levier de déclenchement 12 reste au contact du bord du crochet 18b du premier verrou de levier de déclenchement 18' qui, après avoir été quitté par sa came de commande 8', tend à revenir dans sa position initiale sous l'action de son ressort de rappel.While the auxiliary source 2 provides energy to the auxiliary mechanism by driving the various elements in rotation, and in particular the drive train 3 with the wheel 3a carrying the actuating member 10, the trigger lever 12, under the action of its spring 14, continues to pivot counterclockwise, to reach its second maximum angular position, on a stop (not shown), as shown in figure 6 . In this maximum angular position, the protrusion 12a of the trigger lever 12 is in the path of one of the arms 10a of the actuating member 10. The foot 12b of the trigger lever 12 remains in contact with the edge of the hook 18b of the first release lever lock 18' which, after being released by its control cam 8', tends to return to its initial position under the action of its return spring.

En référence à la figure 7, le bras 10a de l'organe d'actionnement 10, entrainé en rotation dans le sens antihoraire par la source d'énergie auxiliaire 2 via le rouage d'entrainement 3, coopère avec l'excroissance 12a du levier de déclenchement 12 et entraine en rotation ledit levier de déclenchement 12, depuis sa deuxième position maximale, dans le sens horaire. Le rouage d'entrainement 3 est agencé pour vaincre la force exercée par le ressort 14 du levier de déclenchement 12. Le pied 12b du levier de déclenchement 12 repasse à l'arrière du crochet 18b et se repositionne dans l'échancrure 18a du premier verrou de levier de déclenchement 18' qui, ramené par son propre ressort de rappel en pivotant dans le sens antihoraire, verrouille le levier de déclenchement 12 dans sa première position de repos. Le mécanisme de déclenchement 6 est de nouveau dans sa première position de repos.With reference to the figure 7 , the arm 10a of the actuating member 10, driven in rotation in the counterclockwise direction by the auxiliary energy source 2 via the drive train 3, cooperates with the protrusion 12a of the trigger lever 12 and drives in rotation of said trigger lever 12, from its second maximum position, clockwise. The drive train 3 is arranged to overcome the force exerted by the spring 14 of the trigger lever 12. The foot 12b of the trigger lever 12 returns to the rear of the hook 18b and is repositioned in the notch 18a of the first lock trigger lever 18 'which, brought back by its own return spring by pivoting counterclockwise, locks the trigger lever 12 in its first rest position. The trigger mechanism 6 is again in its first rest position.

En parallèle, les cames de verrouillage 26', 26", entrainées par la source d'énergie auxiliaire 2, ont également poursuivi leur rotation dans le sens antihoraire jusqu'à ce que la came de verrouillage 26" vienne en butée contre son verrou 24". Le verrou 24' a été ramené en position verrouillée par son ressort de rappel en basculant dans le sens horaire. Le mécanisme de verrouillage 5 est de nouveau en position verrouillée. Le mouvement est prêt pour un nouveau saut, au cours duquel l'étoile de déclenchement 20" et le verrou 24" seront commandés par le levier de déclenchement pour libérer la came de verrouillage 26", et de nouveau la source d'énergie auxiliaire 2.In parallel, the locking cams 26', 26", driven by the auxiliary energy source 2, have also continued their rotation in the counterclockwise direction until the locking cam 26" comes into abutment against its lock 24 ". The lock 24 'has been returned to the locked position by its return spring by tilting clockwise. The locking mechanism 5 is again in the locked position. The movement is ready for a new jump, during which the 20" trigger star and 24" latch will be controlled by the trigger lever to release the 26" latch cam, and again the auxiliary power source 2.

Le mécanisme de verrouillage à deux verrous permet d'assurer le blocage de la source d'énergie auxiliaire 2 lors du saut de la roue d'affichage 4a et de garantir un saut unique du disque d'affichage 4 à chaque libération.The locking mechanism with two bolts makes it possible to ensure the blocking of the auxiliary energy source 2 during the jump of the display wheel 4a and to guarantee a single jump of the display disc 4 at each release.

En référence aux figures 8 et 9, il est proposé un autre mode de réalisation du mécanisme de déclenchement 6. Les éléments identiques à ceux du deuxième mode de réalisation sont désignés par les mêmes références.With reference to figures 8 and 9 , another embodiment of the trigger mechanism 6 is proposed. The elements identical to those of the second embodiment are designated by the same references.

Dans cette variante, les deux étoiles de déclenchement 20', 20" sont des étoiles à cinq dents, solidaires d'une étoile d'entrainement à dix dents 22, l'ensemble étant toujours monté pivotant sur le bâti.In this variant, the two trigger stars 20', 20" are five-tooth stars, integral with a ten-tooth drive star wheel 22, the assembly still being pivotally mounted on the frame.

Le cliquet de déclenchement 16 est remplacé par une ancre de déclenchement 42 solidaire du levier de déclenchement 12 et agencée pour entrainer en rotation dans le sens horaire l'étoile d'entrainement 22 d'un demi-pas à chaque changement de position du levier de déclenchement 12 entre ses première et deuxième positions, c'est-à-dire à chaque passage de sa première position de repos à sa deuxième position maximale dans le sens antihoraire et à chaque passage de sa deuxième position maximale à sa première position de repos dans le sens horaire. Il est prévu un sautoir 44 qui agit sur une étoile à vingt dents 46 solidaire de l'étoile d'entrainement 22, permettant la stabilisation à chaque demi-pas de l'étoile d'entrainement 22. Les deux étoiles de déclenchements 20', 20" sont déphasées d'un demi-pas. Ainsi, la rotation de l'ensemble des quatre étoiles constitué par les deux étoiles de déclenchement 20', 20", l'étoile d'entrainement 22 et l'étoile 46, impulsée par l'ancre de déclenchement 42, entraine alternativement la rotation des verrous 24', 24" de la source d'énergie auxiliaire 2 dans le sens antihoraire en position déverrouillée lors de chaque passage du levier de déclenchement 12 de sa première position à sa deuxième position maximale, libérant la chaine cinématique de la source d'énergie auxiliaire 2, tout en maintenant alternativement les verrous 24', 24" dans une position levée intermédiaire stable ne bloquant pas les cames de verrouillage 26', 26" respectivement tant que le levier de déclenchement 12 est dans sa deuxième position maximale. En effet, la position des étoiles de déclenchement 20', 20" n'ayant tourné que d'un quart de pas empêche le positionnement des verrous 24', 24" dans leur position verrouillée tant que le levier de déclenchement 12 est dans sa deuxième position. Le retour du levier de déclenchement 12 de sa deuxième position à sa première position entraine une nouvelle rotation de l'ancre de déclenchement 42 autorisant le verrou soulevé dans la position levée intermédiaire stable à revenir en position verrouillée pour pouvoir bloquer sa came de verrouillage ultérieurement.The trigger pawl 16 is replaced by a trigger anchor 42 secured to the trigger lever 12 and arranged to rotate the drive star wheel 22 in a clockwise direction by half a step each time the lever position changes. release 12 between its first and second positions, that is to say each time it passes from its first rest position to its second maximum position counterclockwise and each time it passes from its second maximum position to its first rest position in clockwise. A jumper 44 is provided which acts on a star wheel with twenty teeth 46 integral with the star wheel 22, allowing the stabilization at each half-step of the star wheel 22. The two trigger stars 20', 20" are half a step out of phase. Thus, the rotation of the set of four stars consisting of the two trigger stars 20', 20", the drive star 22 and the star 46, driven by the trigger anchor 42, alternately causes the rotation of the locks 24', 24" from the auxiliary energy source 2 counterclockwise in the unlocked position each time the release lever 12 passes from its first position to its second maximum position, releasing the kinematic chain from the auxiliary energy source 2, while by alternately maintaining the locks 24', 24" in a stable intermediate raised position which does not block the locking cams 26', 26" respectively as long as the trigger lever 12 is in its second maximum position. Indeed, the position of the trigger stars 20', 20" having turned only a quarter of a step prevents the positioning of the locks 24', 24" in their locked position as long as the trigger lever 12 is in its second position. The return of the trigger lever 12 from its second position to its first position causes a new rotation of the trigger anchor 42 allowing the bolt raised in the stable intermediate raised position to return to the locked position in order to be able to block its locking cam subsequently.

Par exemple, si le passage du levier de déclenchement 12 de sa première position à sa deuxième position a soulevé le verrou 24' dans sa position déverrouillée pour libérer la came de verrouillage 26' permettant le saut de la roue d'affichage 4a, le verrou 24" étant dans sa position verrouillée, puis laissé ledit verrou 24' dans sa position levée intermédiaire stable, sans aucun verrouillage possible de sa came de verrouillage 26', ladite came de verrouillage 26' est libre de terminer sa course lors du retour du levier de déclenchement 12 de sa deuxième position à sa première position en garantissant un seul saut, l'autre came de verrouillage 26" se retrouvant bloquée par son verrou 24" en position verrouillée, prêts pour le prochain saut.For example, if the passage of the trigger lever 12 from its first position to its second position has raised the lock 24 'in its unlocked position to release the locking cam 26' allowing the jump of the display wheel 4a, the lock 24" being in its locked position, then left said lock 24' in its stable intermediate raised position, without any possible locking of its locking cam 26', said locking cam 26' is free to complete its stroke when the lever returns trigger 12 from its second position to its first position guaranteeing a single jump, the other locking cam 26 "being blocked by its lock 24" in the locked position, ready for the next jump.

Ce mécanisme permet de positionner alternativement les verrous 24', 24" dans une position levée stable tant que le levier de positionnement 12 est en deuxième position angulaire maximale, permettant de ne pas mettre le mécanisme en position de défaut si la réserve de marche de la source d'énergie auxiliaire 2 est trop faible pour permettre un retour du levier de déclenchement dans sa première position, même si le saut a été réalisé. Un simple remontage de la source d'énergie auxiliaire 2 permettra de fournir l'énergie nécessaire pour remettre le levier de déclenchement 12 dans sa première position de repos en permettant ensuite au mécanisme de verrouillage de passer en position verrouillée, disponible pour le prochain saut.This mechanism makes it possible to alternately position the locks 24', 24" in a stable raised position as long as the positioning lever 12 is in second maximum angular position, making it possible not to put the mechanism in the default position if the power reserve of the auxiliary energy source 2 is too low to allow the release lever to return to its first position, even if the jump has been realized. A simple winding of the auxiliary energy source 2 will provide the energy necessary to return the release lever 12 to its first rest position, then allowing the locking mechanism to move into the locked position, available for the next jump.

En référence à la figure 10, il est proposé un autre mode de réalisation du mécanisme de déclenchement 6. Les éléments identiques à ceux du deuxième mode de réalisation sont désignés par les mêmes références.With reference to the figure 10 , another embodiment of the trigger mechanism 6 is proposed. The elements identical to those of the second embodiment are designated by the same references.

Dans cette variante, les deux étoiles de déclenchement 20', 20" sont montées pivotantes directement sur le levier de déclenchement 12.In this variant, the two trigger stars 20', 20" are pivotally mounted directly on the trigger lever 12.

Le mécanisme de déclenchement 6 comprend également une étoile de positionnement 48 montée pivotante sur le levier de déclenchement 12 et solidaire des étoiles de déclenchement 20', 20". L'étoile de positionnement 48 est maintenue par une butée 50 pourvue d'un ressort 52.The trigger mechanism 6 also comprises a positioning star 48 pivotally mounted on the trigger lever 12 and secured to the trigger stars 20', 20". The positioning star 48 is held by a stop 50 provided with a spring 52 .

Il est également prévu un cliquet d'entrainement 54 monté sur le bâti et agencé pour entrainer l'étoile de positionnement 48 lorsque le levier de déclenchement 12 passe de sa deuxième position à sa première position.There is also provided a drive pawl 54 mounted on the frame and arranged to drive the positioning star 48 when the trigger lever 12 passes from its second position to its first position.

Lorsque le levier de déclenchement 12 passe de sa première position de repos à sa deuxième position angulaire maximale en pivotant dans le sens antihoraire, les deux étoiles de déclenchement 20', 20" portées par ledit levier de déclenchement 12 pivotent également pour soulever alternativement, dans le sens horaire, les verrous 24', 24" de la source d'énergie auxiliaire 2 en position déverrouillée libérant ainsi la chaine cinématique de ladite source d'énergie auxiliaire 2 par l'intermédiaire de la libération des cames de verrouillage 26', 26" qui tournent dans le sens antihoraire, autorisant le saut de la roue d'affichage 4a. Tant que le levier de déclenchement 12 est dans sa deuxième position, l'étoile de déclenchement 20', 20" qui a soulevé son verrou 24', 24" maintient ledit verrou 24', 24" soulevé en position déverrouillée empêchant ainsi le blocage de sa came de verrouillage 26', 26". Lors du retour du levier de déclenchement 12 dans sa première position de repos, l'étoile de positionnement 48 des étoiles de déclenchement 20', 20" entre en contact avec le cliquet d'entrainement 54 pour entrainer et positionner l'autre des étoiles de déclenchement 20', 20" pour le prochain saut.When the trigger lever 12 passes from its first rest position to its second maximum angular position by pivoting counterclockwise, the two trigger stars 20', 20" carried by said trigger lever 12 also pivot to lift alternately, in clockwise, the locks 24', 24" of the auxiliary energy source 2 in the unlocked position thus releasing the kinematic chain of said auxiliary energy source 2 via the release of the locking cams 26', 26 "which rotate counter-clockwise, allowing the display wheel 4a to jump. As long as the trigger lever 12 is in its second position, the star of trigger 20', 20" which has raised its lock 24', 24" maintains said raised lock 24', 24" in the unlocked position, thus preventing its locking cam 26', 26" from being blocked. When the trip lever 12 returns to its first rest position, the positioning star 48 of the trip stars 20', 20" comes into contact with the drive pawl 54 to drive and position the other of the trip stars. 20' trigger, 20" for next jump.

Ce mécanisme permet de maintenir le verrou soulevé 24', 24" dans sa position déverrouillée et de ne pas bloquer sa came de verrouillage 26', 26" tant que le levier de positionnement 12 est en deuxième position angulaire maximale, permettant de ne pas mettre le mécanisme en position de défaut si la réserve de marche de la source d'énergie auxiliaire 2 est trop faible pour permettre l'entrainement de ladite came de verrouillage 26', 26" et un retour du levier de déclenchement 12 dans sa première position. Un simple remontage de la source d'énergie auxiliaire 2 permettra de fournir l'énergie nécessaire pour remettre le levier de déclenchement 12 dans sa première position de repos en permettant à ladite came de verrouillage 26', 26" de tourner pour ensuite passer le mécanisme de verrouillage en position verrouillée, disponible pour le prochain saut.This mechanism makes it possible to maintain the raised lock 24', 24" in its unlocked position and not to block its locking cam 26', 26" as long as the positioning lever 12 is in the second maximum angular position, making it possible not to the mechanism in the default position if the power reserve of the auxiliary energy source 2 is too low to allow the driving of said locking cam 26', 26" and a return of the trigger lever 12 to its first position. A simple winding of the auxiliary energy source 2 will provide the energy necessary to return the trigger lever 12 to its first rest position by allowing said locking cam 26', 26" to rotate in order to then pass the mechanism lock in locked position, available for next jump.

Grâce notamment au passage du levier de déclenchement de sa première position de repos à sa deuxième position angulaire maximale sous l'action de son ressort, la présente invention permet d'obtenir un mouvement comprenant un mécanisme de déclenchement agencé pour permettre un déclenchement instantané d'un saut du mécanisme auxiliaire bien que le mobile de commande ait une force très nettement inférieure à celle de la source d'énergie auxiliaire qui est libérée pour alimenter ledit mécanisme auxiliaire.Thanks in particular to the passage of the trigger lever from its first rest position to its second maximum angular position under the action of its spring, the present invention makes it possible to obtain a movement comprising a trigger mechanism arranged to allow instantaneous triggering of a jump of the auxiliary mechanism although the mobile control has a force much lower than that of the auxiliary energy source which is released to supply said auxiliary mechanism.

L'organe d'actionnement lié cinématiquement à la source d'énergie auxiliaire permet de remettre en place le levier de déclenchement pour que celui-ci soit de nouveau disponible pour le prochain déclenchement grâce au couple libéré par la source d'énergie auxiliaire, ce couple permettant également d'entrainer le mécanisme auxiliaire. Cela permet de former un système qui fonctionne en boucle entre le mécanisme de déclenchement, la source d'énergie auxiliaire et le mécanisme auxiliaire et qui permet d'avoir un rapport important entre l'effort fourni par le mobile de commande et le couple à libérer.The actuating member kinematically linked to the auxiliary energy source makes it possible to reposition the tripping lever so that the latter is again available for the next tripping thanks to the torque released by the auxiliary energy source, this torque also allowing to train the auxiliary mechanism. This makes it possible to form a system which operates in a loop between the trigger mechanism, the auxiliary energy source and the auxiliary mechanism and which makes it possible to have a high ratio between the force provided by the control wheel and the torque to be released. .

D'autre part, l'optimisation des bras de levier entre le mobile de commande 8 et le levier de déclenchement 12 permet de ne faire supporter au mobile de commande 8 que le frottement dû au ressort du levier de déclenchement 12. De plus, les frottements à vaincre peuvent être diminués en améliorant les propriétés tribologiques des surfaces de contact permettant d'augmenter le rapport entre l'effort nécessaire et l'effort à vaincre.On the other hand, the optimization of the lever arms between the mobile control 8 and the release lever 12 makes it possible to make the mobile control 8 bear only the friction due to the spring of the release lever 12. In addition, the The friction to be overcome can be reduced by improving the tribological properties of the contact surfaces making it possible to increase the ratio between the force required and the force to be overcome.

En référence aux figures 12 à 15, il est représenté un autre mode de réalisation de l'invention, dans lequel le mouvement comprend un mécanisme isolateur 56 du mécanisme de déclenchement 6 permettant de verrouiller ledit mécanisme de déclenchement 6 quand il n'est plus nécessaire d'entrainer le mécanisme auxiliaire. Dans les exemples décrits ici appliqués à un mécanisme de chronographe, et plus particulièrement à un compte à rebours, dont les disques d'affichage sont alimentés par la source d'énergie auxiliaire 2, le mécanisme isolateur 56 permet plus particulièrement de verrouiller le levier de déclenchement 12 de la source d'énergie auxiliaire 2 une fois que les disques affichent 0 pour garantir qu'il n'y aura plus de saut des disques d'affichage.With reference to figures 12 to 15 , there is shown another embodiment of the invention, in which the movement comprises an isolator mechanism 56 of the trigger mechanism 6 making it possible to lock said trigger mechanism 6 when it is no longer necessary to drive the auxiliary mechanism. In the examples described here applied to a chronograph mechanism, and more particularly to a countdown, the display discs of which are powered by the auxiliary power source 2, the isolator mechanism 56 makes it possible more particularly to lock the tripping 12 of the auxiliary power source 2 once the disks display 0 to ensure that there will be no more skipping of the display disks.

Le disque d'affichage 4 des unités de minutes est représenté ici par sa came des unités de minutes 58, et les disques d'affichage des dizaines de minutes et des heures sont représentés ici respectivement par la came des dizaines de minutes 60 et par la came des heures 62. La position des disques d'affichage des unités de minutes, des dizaines de minutes et des heures est détectée par une bascule de détection 64 pourvues de deux bras palpeurs 64a, 64b et d'un bras de commande 64c du mécanisme isolateur, comme cela sera décrit ci-après. Ce mécanisme de cames de position et de bascule avec palpeurs est connu de l'homme du métier.The minute units display disc 4 is represented here by its minute units cam 58, and the tens of minutes and hours display discs are represented here respectively by the tens of minutes cam 60 and by the hour cam 62. The position of the minute, tens of minute and hour unit display discs is detected by a detection rocker 64 provided with two feeler arms 64a, 64b and a control arm 64c of the mechanism isolator, as will be described below. This mechanism of position and rocker cams with feelers is known to those skilled in the art.

Le mécanisme isolateur 56 est agencé pour pouvoir occuper une position active dans laquelle il coopère avec le mécanisme de déclenchement 6, et plus particulièrement avec son levier de déclenchement 12, pour le bloquer et une position inactive dans laquelle il ne coopère plus avec le mécanisme de déclenchement 6, le passage en position active étant commandé par le mécanisme auxiliaire, ici le mécanisme d'affichage du chronographe, lorsque ledit mécanisme auxiliaire ne doit pas être entrainé par la source d'énergie auxiliaire 2 et le passage en position inactive étant commandé par un mécanisme de libération 66.The isolator mechanism 56 is arranged to be able to occupy an active position in which it cooperates with the trigger mechanism 6, and more particularly with its trigger lever 12, to block it and an inactive position in which it no longer cooperates with the trigger mechanism. trigger 6, the switch to the active position being controlled by the auxiliary mechanism, here the chronograph display mechanism, when said auxiliary mechanism must not be driven by the auxiliary energy source 2 and the switch to the inactive position being controlled by a release mechanism 66.

A cet effet, le mécanisme isolateur 56 comprend un isolateur 68 monté pivotant sur le bâti entre sa position inactive comme représenté sur la figure 12 et sa position active comme représenté sur la figure 13. L'isolateur 68 comprend un premier bras 68a de forme complémentaire à un bras de verrouillage 12c du levier de déclenchement 12, agencé pour pouvoir coopérer avec ledit bras de verrouillage 12c lorsque le levier de déclenchement 12 est dans sa première position de repos, afin de maintenir ledit levier de déclenchement 12 dans sa première position lorsque ledit isolateur en position active.To this end, the isolator mechanism 56 comprises an isolator 68 pivotally mounted on the frame between its inactive position as shown in the figure 12 and its active position as shown in the figure 13 . The insulator 68 comprises a first arm 68a of complementary shape to a locking arm 12c of the trigger lever 12, arranged to be able to cooperate with said locking arm 12c when the trigger lever 12 is in its first rest position, in order to maintain said trigger lever 12 in its first position when said isolator in the active position.

Le mécanisme isolateur comprend également un verrou d'isolateur 70 monté pivotant sur le bâti. Le verrou 70 comprend un crochet 70a agencé pour coopérer avec un deuxième bras 68b de l'isolateur 68 afin de maintenir l'isolateur 68 en position inactive. Le verrou 70 comprend également un bras 70b portant une goupille 72 agencée pour pouvoir être commandée par le mécanisme auxiliaire, et plus particulièrement par un doigt 73 prévu sur le bras de commande 64c de la bascule de détection 64, pour faire pivoter le verrou 70 afin de libérer l'isolateur 68 et permettre son passage en position active.The isolator mechanism also includes an isolator latch 70 pivotally mounted to the frame. The lock 70 includes a hook 70a arranged to cooperate with a second arm 68b of the insulator 68 in order to maintain the insulator 68 in the inactive position. The lock 70 also comprises an arm 70b carrying a pin 72 arranged to be able to be controlled by the auxiliary mechanism, and more particularly by a finger 73 provided on the control arm 64c of the detection rocker 64, to make the lock 70 pivot in order to to release the insulator 68 and allow it to pass into the active position.

Le mécanisme de libération 66 du mécanisme isolateur 56 comprend un organe de libération 74 de l'isolateur 68 agencé pour pouvoir entrainer l'isolateur 68 en position inactive et un organe de commande 76 agencé pour commander ledit organe de libération 74 afin de passer l'isolateur 68 en position inactive lorsque le mécanisme auxiliaire peut être entrainé par la source d'énergie auxiliaire 2 et que le levier de déclenchement 12 ne doit plus être bloqué par le mécanisme isolateur 56.The release mechanism 66 of the insulator mechanism 56 comprises a release member 74 of the insulator 68 arranged to be able to drive the insulator 68 into the inactive position and a control member 76 arranged to control said release member 74 in order to pass the 68 isolator in inactive position when the auxiliary mechanism can be driven by the auxiliary energy source 2 and the trigger lever 12 must no longer be blocked by the isolator mechanism 56.

L'organe de libération 74 est avantageusement une glissière et l'organe de commande 76 est la commande START du mécanisme de chronographe commandé par un poussoir externe (non représenté). Il est bien évident que l'organe de commande pourrait être relié à un mécanisme interne au mouvement.The release member 74 is advantageously a slide and the control member 76 is the START command of the chronograph mechanism controlled by an external push-button (not shown). It is quite obvious that the control member could be connected to a mechanism internal to the movement.

La glissière 74 est montée pivotante par une de ses extrémités 74a sur la commande 76. L'extrémité libre 74b de la glissière 74 est agencée pour pouvoir coopérer avec un troisième bras 68c de l'isolateur 68 afin de faire pivoter ledit isolateur 68 en position inactive.The slide 74 is pivotally mounted by one of its ends 74a on the control 76. The free end 74b of the slide 74 is arranged to be able to cooperate with a third arm 68c of the insulator 68 in order to cause said insulator 68 to pivot into position. inactive.

Afin d'éviter une libération intempestive du levier de déclenchement 12 si le mécanisme auxiliaire n'est pas prêt à fonctionner de nouveau, par exemple au cas où les disques d'affichage ne sont pas réglés pour démarrer un compte à rebours, le mécanisme de libération 66 est agencé pour pouvoir entrainer le mécanisme isolateur 56 en position inactive uniquement lorsque la glissière 74 occupe une position autorisée, commandée par le mécanisme auxiliaire.In order to avoid inadvertent release of the trigger lever 12 if the auxiliary mechanism is not ready to operate again, for example in the event that the display discs are not set to start a countdown, the mechanism of release 66 is arranged to be able to drive the isolator mechanism 56 into the inactive position only when the slide 74 occupies an authorized position, controlled by the auxiliary mechanism.

A cet effet, la glissière 74 comporte une rainure 77 dans laquelle coulisse une goupille 78 solidaire du bras de commande 64c de la bascule de détection 64, permettant à la glissière 74 de pivoter en fonction de la position de la bascule de détection 64 afin de pouvoir occuper une position autorisée. De plus, le troisième bras 68c de l'isolateur 68 comprend une butée 80 agencée pour coopérer avec l'extrémité 74b de la glissière 74 uniquement lorsqu'elle est dans sa position autorisée. En dehors de cette butée 80, aucun contact entre la glissière 74 et le troisième bras 68c de l'isolateur 68 n'est possible.To this end, the slide 74 comprises a groove 77 in which slides a pin 78 secured to the control arm 64c of the detection rocker 64, allowing the slide 74 to pivot according to the position of the detection rocker 64 in order to be able to occupy an authorized position. In addition, the third arm 68c of the insulator 68 comprises a stop 80 arranged to cooperate with the end 74b of the slide 74 only when it is in its authorized position. Apart from this stop 80, no contact between the slide 74 and the third arm 68c of the insulator 68 is possible.

Le fonctionnement du mécanisme isolateur est le suivant, en partant de sa position inactive telle que représentée sur la figure 12. La position de la bascule de détection 64 indique que les disques des heures et des dizaines de minutes affichent le zéro, mais que le disque des unités de minutes n'affiche pas encore le zéro de sorte le levier de déclenchement 12 est encore nécessaire pour libérer la source d'énergie auxiliaire 2 et entrainer le disque d'affichage des unités de minutes comme décrit ci-dessus. Dans cette position inactive, le crochet 70a du verrou 70 coopère avec le deuxième bras 68b de l'isolateur pour maintenir ledit isolateur 68 en position inactive, son premier bras 68a n'étant pas au contact du bras 12c du levier de déclenchement 12.The operation of the isolator mechanism is as follows, starting from its inactive position as shown on the figure 12 . The position of the detection flip-flop 64 indicates that the hour and tens of minutes discs display zero, but the minute units disc does not yet display the zero so the trip lever 12 is still needed to release the auxiliary power source 2 and drive the minute units display disc as described above. In this inactive position, the hook 70a of the lock 70 cooperates with the second arm 68b of the insulator to maintain said insulator 68 in the inactive position, its first arm 68a not being in contact with the arm 12c of the trigger lever 12.

En référence à la figure 13, lorsque le disque d'affichage des unités de minutes affiche le zéro, le bras 64b de la bascule de détection 64 tombe dans la came des unités de minutes 58 de sorte que sous l'action de son ressort (non représenté) ladite bascule de détection 64 pivote, avec son bras de commande 64c, dans le sens antihoraire, entrainant, par appui de son doigt 73 sur la goupille 72 du verrou 70 le pivotement dudit verrou 70 dans le sens horaire. Lors de ce pivotement, le crochet 70a du verrou 70 se dégage du deuxième bras 68b de l'isolateur 68, de sorte que ledit isolateur 68 libéré pivote dans le sens antihoraire sous l'action de son ressort (non représenté) pour passer en position active. Dans cette position active, le premier bras 68a de l'isolateur 68 coopère avec le bras 12c du levier de déclenchement 12 revenu dans sa première position de repos, comme décrit ci-dessus, empêchant tout changement de position dudit levier de déclenchement 12. Ainsi, le mécanisme de déclenchement 6 est bloqué, empêchant la libération notamment du rouage d'entrainement 3 du disque d'affichage 4 de sorte que tout saut des disques d'affichage est impossible.With reference to the figure 13 , when the minute units display disc displays zero, arm 64b of detection rocker 64 falls into minute units cam 58 so that under the action of its spring (not shown) said detection 64 pivots, with its control arm 64c, in the counterclockwise direction, causing, by pressing its finger 73 on the pin 72 of the lock 70, the pivoting of the said lock 70 in the clockwise direction. During this pivoting, the hook 70a of the latch 70 disengages from the second arm 68b of the insulator 68, so that said released insulator 68 pivots counterclockwise under the action of its spring (not shown) to move into position active. In this active position, the first arm 68a of the insulator 68 cooperates with the arm 12c of the trigger lever 12 returned to its first rest position, as described above, preventing any change in position of said trigger lever 12. Thus , the trigger mechanism 6 is blocked, preventing the release in particular of the drive train 3 of the display disc 4 so that any jumping of the display discs is impossible.

Dans la position active représentée sur la figure 13, les cames 58, 60, et 62 des disques d'affichage sont positionnées pour afficher des zéros, de sorte que le mécanisme de compte à rebours n'est pas prêt pour un nouveau décompte. Dans ce cas, la position de la glissière 74 imposée par le bras de commande 64c de la bascule de détection 64 ne correspond pas à sa position autorisée pour coopérer avec l'isolateur 68, de sorte qu'une manœuvre de la glissière 74 ne pourra pas mettre en rotation l'isolateur 68 pour le passer en position inactive et libérer le levier de déclenchement 12.In the active position represented on the figure 13 , the cams 58, 60, and 62 of the display discs are positioned to display zeros, so that the countdown mechanism is not ready for a new count. In this case, the position of the slide 74 imposed by the control arm 64c of the detection rocker 64 does not correspond to its authorized position to cooperate with the insulator 68, so that a maneuver of the slide 74 cannot not rotate the insulator 68 to move it to the inactive position and release the trip lever 12.

En référence à la figure 14, lorsque l'on souhaite utiliser de nouveau le mécanisme auxiliaire, ici le mécanisme de chronographe compte à rebours, la position des différents disques d'affichage est réglée, au moins l'un des disques d'affichage affichant une valeur différente de zéro. La position des cames 58, 60, 62 est modifiée en conséquence, de sorte que la bascule de détection 64 ainsi que son bras de commande 64c pivotent dans le sens horaire. Ce pivotement de du bras de commande 64c entraine, par l'intermédiaire de sa goupille 78 engagée dans la rainure 77 de la glissière 74, le pivotement de ladite glissière 74 dans le sens antihoraire afin de la positionner dans sa position autorisée en regard de la butée 80 du troisième bras 68c de l'isolateur 68. De plus, le pivotement de la bascule de détection 64 dans le sens horaire libère le verrou 70 qui pivote dans le sens antihoraire sous l'action de son ressort de rappel (non représenté) afin de se rapprocher du deuxième bras 68b de l'isolateur 68. Le bras 12c du levier de déclenchement 12 reste engagé dans le premier bras 68a de l'isolateur 68.With reference to the figure 14 , when it is desired to use the auxiliary mechanism again, here the countdown chronograph mechanism, the position of the various display discs is adjusted, at least one of the display discs displaying a value other than zero. The position of the cams 58, 60, 62 is modified accordingly, so that the detection rocker 64 as well as its control arm 64c pivot clockwise. This pivoting of the control arm 64c causes, via its pin 78 engaged in the groove 77 of the slide 74, the pivoting of the said slide 74 in the counterclockwise direction in order to position it in its authorized position opposite the abutment 80 of the third arm 68c of the insulator 68. In addition, the pivoting of the detection rocker 64 in the clockwise direction releases the lock 70 which pivots in the counterclockwise direction under the action of its return spring (not shown) in order to approach the second arm 68b of the insulator 68. The arm 12c of the trigger lever 12 remains engaged in the first arm 68a of the insulator 68.

En référence à la figure 15, lorsqu'un utilisateur déclenche le START du chronographe compte à rebours et appuie sur la commande 76, la glissière 74, positionnée précédemment dans sa position autorisée, coulisse en direction de l'isolateur 68 de sorte que son extrémité libre 74b vient au contact de la butée 80 prévue sur le troisième bras 68c de l'isolateur, ce qui fait pivoter l'isolateur 68 dans le sens horaire, en dégageant son premier bras 68a du bras 12c du levier de déclenchement 12. Ledit levier de déclenchement 12 est alors libéré permettant de nouveau le saut des disques d'affichage. Lorsque l'isolateur 68 termine sa rotation dans le sens horaire, son deuxième bras 68b vient s'engager dans le crochet 70a du verrou 70, de sorte que l'isolateur 68 est de nouveau maintenu dans sa position inactive par ledit verrou 70, comme représenté sur la figure 12.With reference to the figure 15 , when a user triggers the START of the countdown chronograph and presses the control 76, the slide 74, previously positioned in its authorized position, slides in the direction of the insulator 68 so that its free end 74b comes into contact with the stop 80 provided on the third arm 68c of the insulator, which causes the insulator 68 to pivot clockwise, disengaging its first arm 68a from the arm 12c of the trigger lever 12. Said trigger lever 12 is then released allowing display disks to jump again. When the insulator 68 completes its clockwise rotation, its second arm 68b comes to engage in the hook 70a of the lock 70, so that the insulator 68 is again held in its inactive position by said lock 70, as represented on the figure 12 .

Dans les exemples décrits ici, le mécanisme auxiliaire est un mécanisme de chronographe compte à rebours, mais il est bien évident que la présente invention peut également s'appliquer à d'autres mécanismes auxiliaires, tels que des mécanismes de sonnerie type alarme, répétition minutes ou grande sonnerie, alimentés par une source d'énergie auxiliaire qui doit être libérée par une commande ayant une force très nettement inférieure.In the examples described here, the auxiliary mechanism is a countdown chronograph mechanism, but it is obvious that the present invention can also be applied to other auxiliary mechanisms, such as striking mechanisms of the alarm type, minute repeater or great bell, powered by an auxiliary energy source which must be released by a control having a much lower force.

Claims (17)

  1. Timepiece movement comprising a main power source (1), an auxiliary power source (2) which is kinematically connected to an auxiliary mechanism by means of an auxiliary driving going train (3), a latching mechanism (5) for the auxiliary power source (2) arranged to move between a latched position in which it immobilises the auxiliary power source (2) and an unlatched position in which it allows said auxiliary power source (2) to turn, a triggering mechanism (6) for said latching mechanism (5) to move between a first rest position and a second maximum position, and to cooperate with the latching mechanism (5) in order to drive it from its latched position to its unlatched position as it passes from its first position to its second position, and at least one control mobile (8) driven by said main power source (1) and arranged to cooperate with the triggering mechanism (6) in order to permit it to pass from its first position to its second position when said auxiliary mechanism is to be driven by said auxiliary power source (2), characterised in that it comprises an actuating member (10) kinematically connected to the auxiliary power source (2) and arranged to cooperate with the triggering mechanism (6) occupying its second position in order to be able to reposition it in its first position before the latching mechanism (5) returns to its latched position.
  2. Movement as claimed in claim 1, characterised in that the triggering mechanism (6) comprises a triggering lever (12), at least one triggering lever latch (18, 18', 18") arranged to keep the triggering lever (12) in its first position and to be able to be controlled by the control mobile (8) in order to release said triggering lever (12), and at least one triggering starwheel (20, 20', 20") arranged to be controlled by the triggering lever (12) in order to drive the latching mechanism (5) into the unlatched position during passage of the triggering lever (12) from its first position to its second position.
  3. Movement as claimed in any one of the preceding claims, characterised in that the latching mechanism (5) comprises at least one latch (24, 24', 24") for the auxiliary power source (2) arranged to cooperate with the triggering mechanism (6) in order to pass from its latched position to its unlatched position and at least one latching cam (26, 26', 26") for the auxiliary power source (2) arranged to cooperate with the latch (24) for the auxiliary power source (2), when the latching mechanism (5) is in the latched position, and kinematically connected to the auxiliary power source (2) in order to be able to be driven by said auxiliary power source (2) in order to return from the unlatched position to the latched position.
  4. Movement as claimed in claims 2 and 3, characterised in that the latching mechanism (5) comprises at least two latches (24', 24") for the auxiliary power source (2) and two latching cams (26', 26") for the auxiliary power source (2), each being associated with its respective latch (24', 24") for the auxiliary power source (2), and in that the triggering mechanism (6) comprises at least two triggering starwheels (20', 20"), each being associated with its respective latch (24', 24") for the auxiliary power source (2), said triggering starwheels (20', 20") being out of phase so as to drive the latches (24', 24") for the auxiliary power source (2) in an alternating manner into the unlatched position.
  5. Movement as claimed in claims 2 and 3, or as claimed in claim 4, characterised in that the triggering starwheel (20, 20', 20") is mounted on a frame of the movement and in that the triggering mechanism (6) comprises a triggering pawl (16) mounted on the triggering lever (12) and arranged to drive the triggering starwheel (20, 20', 20") so as to drive the latch (24, 24', 24") for the auxiliary power source (2) into the unlatched position when said triggering lever (12) passes from its first position to its second position.
  6. Movement as claimed in claim 4, characterised in that the two triggering starwheels (20', 20") are mounted on a frame of the movement, and in that the triggering mechanism (6) comprises a triggering pallet (42) borne by the triggering lever (12) and a driving starwheel (22) fixedly attached to the two triggering starwheels (20', 20"), the triggering pallet (42) being arranged to drive the driving starwheel (22) and the triggering starwheels (20', 20") so as to drive the latches (24', 24") for the auxiliary power source (2) in an alternating manner into the unlatched position each time the triggering lever (12) passes to its second position while preventing positioning in its latched position of the latch (24', 24") for the auxiliary power source (2) which has been driven while the triggering lever (12) is in its second position.
  7. Movement as claimed in claim 4, characterised in that the two triggering starwheels (20', 20") are mounted on the triggering lever (12) and arranged to drive the latches (24', 24") for the auxiliary power source (2) in an alternating manner into the unlatched position when the triggering lever (12) passes from its first position to its second position and in order to keep, in its unlatched position, the latch (24', 24") for the auxiliary power source (2) which has been driven while the triggering lever (12) is in its second position, and in that the triggering mechanism (6) comprises a positioning starwheel (48) mounted on the triggering lever (12) and fixedly attached to the triggering starwheels (20', 20") and a driving pawl (54) mounted on the frame arranged to drive the positioning starwheel (48) when the triggering lever (12) passes from its second position to its first position.
  8. Movement as claimed in any one of claims 2 to 7, characterised in that the triggering mechanism (6) comprises a first triggering lever latch (18') arranged to keep the triggering lever (12) in its first position and a second triggering lever latch (18") arranged to keep the triggering lever (12) in a third intermediate rest position after the first triggering lever latch (18') has released the triggering lever (12), and in that the control mobile (8) comprises a first control cam (8') arranged to cooperate with the first triggering lever latch (18') in order to control the release of the triggering lever (12) from the first triggering lever latch (18') and a second control cam (8") arranged to control the release of the triggering lever (12) from the second triggering lever latch (18").
  9. Movement as claimed in any one of claims 2 to 7, characterised in that the triggering mechanism (6) comprises a first triggering lever latch (18') arranged to keep the triggering lever (12) in its first position and a second triggering lever latch (18") arranged to immobilise the triggering lever (12) in a fourth intermediate position when said triggering lever (12) passes from its second position to its first position, and in that the control mobile (8) comprises a control cam (8a) arranged to cooperate with the first triggering lever latch (18') in order to control the release of the triggering lever (12) from the first triggering lever latch (18') in order to pass from its first position to its second position, said first triggering lever latch (18') comprising means for controlling the second triggering lever latch (18"), which are arranged to control the release of the triggering lever (12) from the second triggering lever latch (18") in order to pass from its fourth position to its first position.
  10. Movement as claimed in any one of the preceding claims, characterised in that the actuating member (10) is fixedly attached to a wheel (3a) of the auxiliary driving going train (3).
  11. Movement as claimed in claim 2, or as claimed in claims 2 and 3, or as claimed in claims 2 and 10, or even as claimed in any one of claims 4 to 9, characterised in that the actuating member (10) comprises at least one arm (10a) arranged to cooperate with the triggering lever (12) occupying its second position.
  12. Movement as claimed in any one of the preceding claims, characterised in that the auxiliary mechanism is disposed between the auxiliary power source (2) and the latching mechanism (5).
  13. Movement as claimed in any one of the preceding claims, characterised in that the control mobile (8) is connected to a seconds hand.
  14. Movement as claimed in any one of the preceding claims, characterised in that it comprises an isolating mechanism (56) for the triggering mechanism (6) arranged to be able to occupy an active position in which it cooperates with said triggering mechanism (6) in order to immobilise it and an inactive position in which it no longer cooperates with the triggering mechanism (6), passage into the active position being controlled by the auxiliary mechanism when said auxiliary mechanism is not to be driven by the auxiliary power source (2) and passage into the inactive position being controlled by a release mechanism (66).
  15. Movement as claimed in claims 2 and 14, characterised in that the isolating mechanism (56) comprises an isolator (68) arranged to be able to keep the triggering lever (12) occupying its first position when it is in the active position and an isolating latch (70) arranged to keep the isolator (68) in the inactive position and to be able to be controlled by the auxiliary mechanism in order to permit its passage into the active position.
  16. Movement as claimed in claim 15, characterised in that the release mechanism (66) for the isolating mechanism (56) comprises a release member (74) for the isolator (68) arranged to be able to drive the isolator (68) into the inactive position when the auxiliary mechanism can be driven by the auxiliary power source (2) and a control member (76) arranged to control said release member (74).
  17. Movement as claimed in any one of the preceding claims, characterised in that the auxiliary mechanism is a display mechanism.
EP20171995.2A 2020-04-29 2020-04-29 Timepiece movement comprising an auxiliary mechanism driven by an auxiliary power source Active EP3904963B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20171995.2A EP3904963B1 (en) 2020-04-29 2020-04-29 Timepiece movement comprising an auxiliary mechanism driven by an auxiliary power source

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20171995.2A EP3904963B1 (en) 2020-04-29 2020-04-29 Timepiece movement comprising an auxiliary mechanism driven by an auxiliary power source

Publications (2)

Publication Number Publication Date
EP3904963A1 EP3904963A1 (en) 2021-11-03
EP3904963B1 true EP3904963B1 (en) 2022-10-26

Family

ID=70476116

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20171995.2A Active EP3904963B1 (en) 2020-04-29 2020-04-29 Timepiece movement comprising an auxiliary mechanism driven by an auxiliary power source

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Country Link
EP (1) EP3904963B1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3559395A (en) * 1966-12-21 1971-02-02 Seiko Instr & Electronics Digital timepiece
EP1498788A1 (en) 2003-07-14 2005-01-19 Eterna SA Display device for timepiece
CH713659A1 (en) * 2017-03-30 2018-10-15 Richemont Int Sa Clock with digital time display.
JP2020517922A (en) * 2017-04-18 2020-06-18 パテック フィリップ ソシエテ アノニム ジュネーブ Block device for watches

Also Published As

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EP3904963A1 (en) 2021-11-03

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