EP3904963A1 - Uhrwerk, das einen durch eine hilfsenergiequelle angetriebenen hilfsmechanismus umfasst - Google Patents

Uhrwerk, das einen durch eine hilfsenergiequelle angetriebenen hilfsmechanismus umfasst Download PDF

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Publication number
EP3904963A1
EP3904963A1 EP20171995.2A EP20171995A EP3904963A1 EP 3904963 A1 EP3904963 A1 EP 3904963A1 EP 20171995 A EP20171995 A EP 20171995A EP 3904963 A1 EP3904963 A1 EP 3904963A1
Authority
EP
European Patent Office
Prior art keywords
trigger
lever
auxiliary
energy source
release
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP20171995.2A
Other languages
English (en)
French (fr)
Other versions
EP3904963B1 (de
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
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Patek Philippe SA Geneve filed Critical Patek Philippe SA Geneve
Priority to EP20171995.2A priority Critical patent/EP3904963B1/de
Publication of EP3904963A1 publication Critical patent/EP3904963A1/de
Application granted granted Critical
Publication of EP3904963B1 publication Critical patent/EP3904963B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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 locking mechanism for the energy source.
  • auxiliary 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 energy source to rotate
  • a triggering mechanism of said locking mechanism arranged to move between a first position of rest and a second maximum position, and to cooperate with the locking mechanism to drive it from its locked position to its unlocked position during its passage from its first position to its second position
  • the auxiliary mechanism is a display device of a chronograph mechanism comprising a display disc, a display gear of which a mobile carries said display disc, an auxiliary energy source kinematically connected to said display gear and display gear control means arranged so as to control its driving by the auxiliary power source when the information to be displayed must be modified.
  • control means comprise a trigger mechanism comprising a lever engaged with the teeth of a control wheel belonging to the chronograph train and supplied 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 energy 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.
  • 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 allows 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 finishing gear and that the good running of the watch does not is not affected when the chronograph is in operation.
  • this mechanism does not allow instantaneous triggering of the display disc jump, the lever of the trigger mechanism being controlled by the toothing of the movement control wheel.
  • this control wheel could present a defect of roundness, 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 is to be driven, has a force very significantly less 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 locking mechanism for 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 energy source to turn, 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 during its passage from its first position to its second position, and at least one control wheel driven by said main energy source and arranged to cooperate with the trigger mechanism to allow its passage 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 actuator 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 release mechanism to its first rest position after having itself ensured the release of said. auxiliary power source, so that it is again available for the next trip.
  • This system makes it possible to have a high ratio between the force supplied by the control mobile 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 lock arranged to maintain the trigger lever in its first position and to be able to be controlled by the control mobile to release said release 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 the 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 move from its locked position to its unlocked position and at least one source locking cam 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 unlocked to locked position.
  • the locking mechanism comprises at least two auxiliary power source locks and two auxiliary energy source locking cams, each associated with its respective auxiliary energy source lock
  • the mechanism trigger comprises at least two trigger stars, each being associated with its respective auxiliary power source lock, said trigger stars being out of phase so as to alternately drive the locks of the auxiliary power source in 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 energy source in the unlocked position when said trigger lever moves 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, l 'anchor trigger being arranged to drive the drive star and the trigger stars so as to alternately drive the bolts of the auxiliary power source in the unlocked position during each passage of the trigger lever in its second position while preventing positioning in its locked position of the auxiliary power source lock which has been driven while the release lever is in its second position.
  • the two trigger stars are mounted on the trigger lever and arranged to alternately drive the bolts of the auxiliary energy source into the unlocked position when the trigger lever moves from its first position to its second position. and to maintain, in its unlocked position, the lock of the auxiliary power source which has been driven while the trigger lever is in its second position
  • the trigger mechanism includes a positioning star mounted on the trigger lever and integral with the trigger stars and a drive pawl mounted on the frame arranged to drive the positioning star when the trigger lever moves from its second position to its first position.
  • the trip mechanism comprises a first trip lever latch arranged to hold the trip lever in its first position and a second trip lever latch arranged to keep the trip lever in a third rest position.
  • the control wheel includes a first control cam arranged to cooperate with the first release lever latch to control the release of the release lever from the first release lever latch and a second control cam arranged to control the release of the release lever from the second release lever latch.
  • the trigger mechanism comprises a first trigger lever lock arranged to hold the trigger lever in its first position and a second trigger lever lock arranged to lock the trigger lever in a fourth intermediate position.
  • the control mobile comprises a control cam arranged to cooperate with the first release lever latch to control the release of the release lever from the first release lever latch trigger to change from its first position to its second position
  • said first trigger lever lock comprising control means of the second trigger lever lock arranged to control the release of the trigger lever from the second trigger lever lock to change from his fourth at his first positio not.
  • the actuator is integral with a wheel of the auxiliary drive train.
  • the actuating member comprises at least one arm arranged to cooperate with the release lever occupying its second position.
  • the auxiliary mechanism is disposed between the auxiliary energy source and the locking mechanism.
  • control mobile is linked to a seconds hand.
  • the movement also comprises a mechanism isolating 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 is not to be driven by the auxiliary power source and the passage in the inactive position being controlled by a release mechanism.
  • the isolator mechanism comprises an isolator arranged to be able to maintain the trigger lever occupying its first position when it is in the active position and an isolator lock arranged to keep the isolator in the inactive position and to be able to be controlled by the auxiliary mechanism to allow it to pass into the active position.
  • the mechanism for releasing the isolator mechanism comprises an isolator releasing member arranged to be able to drive the isolator into the inactive position when the auxiliary mechanism can be driven by the auxiliary energy source and a control member. 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 base movement indicating the current time.
  • the movement can include other mechanisms, for example a chronograph mechanism, supplied with energy by the main barrel.
  • the movement also comprises an auxiliary energy source 2, such as an auxiliary barrel or a leaf spring, kinematically linked to an auxiliary mechanism of the movement by means of 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 display disc jumping 4 minute units of a standard chronograph mechanism or a counting chronograph. backwards.
  • This display disc of minute units 4 is integral with a display wheel 4a which drives the display unit for tens of minutes, itself driving the hours display unit, for example by means of actuating fingers and stars cooperating to blow up the display member corresponding to each change of ten minutes or an hour. It is obvious that the display discs can be replaced by needles.
  • the auxiliary energy source 2 is intermittently locked by a locking mechanism 5, arranged so 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 energy source 2 to the locking mechanism 5, between said auxiliary energy source 2 and said locking mechanism 5.
  • the locking mechanism 5 is arranged to move alternately between a locked position in which it blocks the auxiliary energy source 2 and an unlocked position in which it has released the auxiliary energy source 2 and lets it rotate. This allows the display disk 4 to be jumping, without taking too much power from the main power 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 mobile 8 comprises at least one control cam 8a arranged to cooperate with the trigger mechanism 6 to allow its passage 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 mobile control unit 8 is here linked to a chronograph seconds hand, 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 pop the display disc 4 every minute. It is obvious that this frequency can be different, depending on the auxiliary mechanism.
  • an actuator 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. position as long as said actuator 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 actuator 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 actuator arms 10a, the role of which 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 protuberance 12a positioned so that, when the trigger lever 12 occupies its second position, said protuberance 12a is in the stroke of one of the actuating arms 10a of the actuator member. 10 when it is driven in rotation, allowing said actuating arm 10a of the actuating member 10 to cooperate with the trigger lever 12 to rotate it and bring it back to its first rest position.
  • a triggering pawl 16 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 latch 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 mobile control unit 8 to pivot in B and release said trigger lever 12 in order 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 trigger star 20, which in this embodiment is pivotally mounted on a frame element of the movement.
  • the trigger star 20 is arranged to be controlled and driven by the trigger pawl 16 of the trigger lever 12 clockwise to drive the locking mechanism 5 in the unlocked position during the passage of the trigger lever 12 of 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 moves from its first position to its second position.
  • the locking mechanism 5 comprises, in this embodiment, a latch 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 abuts 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 rotate counterclockwise and lift up to move from its locked position to its unlocked position by releasing the locking cam 26.
  • the locking cam 26 is integral with a wheel 28 kinematically linked to the auxiliary energy source 2 by a return 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 spout 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 maintained 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 latch 24, as shown in figure 1 .
  • the auxiliary energy source 2 is blocked, the torque it exerts being retained by the locking mechanism 5.
  • the control mobile 8 carried by the seconds hand and rotating counterclockwise, actuates by its control cam 8a the release lever lock 18 and rotates it in the direction clockwise by releasing the release lever 12.
  • the control cam 8a must predominantly overcome the friction between the release lever lock 18 and the release lever 12.
  • the latter under the action of its spring 14 , rotates in A counterclockwise from its first rest position to its second maximum angular position, allowing its pawl 16 to drive the drive star 22 and therefore the star star by one step clockwise.
  • trigger 20 actuates the latch 24 by tilting it counterclockwise so that the latch 24 rises and disengages from the locking cam 26 to reach the unlocked position.
  • the torque from the auxiliary power source 2 is released, which rotates the display wheel 4a counterclockwise through the auxiliary drive train 3.
  • the display wheel 4a drives the actuator 10 so that one of its arms 10a cooperates with the protuberance 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 latch 18.
  • the locking cam 26 is driven in counterclockwise rotation by the auxiliary power source, via the return 30 and the wheel 28, one turn so that the locking cam 26 comes into abutment against the latch 24, itself returned by its return spring, so that the locking mechanism is again in the locked position.
  • the trigger 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 trigger lever 12, before the locking mechanism returns. in its locked position. The mechanism is ready for a new jump.
  • the actuator 10 is a star with six arms 10a integral with a wheel 3a of the auxiliary drive train 3. Each arm 10a is arranged to cooperate with the protuberance 12a provided laterally on the control lever. trigger 12.
  • the display wheel 4a is always registered 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 mounted to pivot at B independently of each other. , namely a first trip lever latch 18 'arranged to hold the trip lever 12 in its first rest position and a second trip lever latch 18 "arranged to hold the trip lever 12 in. a third angular rest position intermediate between the first rest position and the second maximum angular position, after the first latch 18 'has released the release lever 12.
  • each release lever latch 18', 18 " comprises, at its end opposite to that cooperating with the control mobile 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.
  • control mobile 8 comprises two control cams 8 ', 8 "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 latch 18' by pivoting it at B to release the foot 12b of the release lever 12 from the hook 18b from the first release lever latch 18 ' in order to allow said trigger lever 12, under the action of its spring, to pivot in A from its first rest position to its third intermediate rest position, according to 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 latch 18 " by rotating it at B to then release the foot 12b of the release lever 12 from the hook 18b of the second release lever latch 18 "in order to allow the release lever 12, still under the action of its spring, to continue to operate. 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 Figure figure 11 .
  • a first release lever latch 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 latch 18 " also mounted to pivot at B.
  • the second latch 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 release lever latch 18 ' carries means for controlling the second latch 18" here constituted 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 left by the cam 8a, is returned to its initial position under the action of its own spring. return, to lock said trigger lever 12 in its first rest position.
  • the mobile control 8 comprises a single control cam 8a, pivoting in the counterclockwise direction, and arranged to cooperate with the first release lever latch 18 'by rotating it at B in the clockwise direction to release the foot. 12b of the trip lever 12 of the hook 18b of the first trip lever latch 18 'to allow the trip lever 12 to pivot counterclockwise from its first home 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 release lever 12 by the second latch 18 "as long as the control cam 8a has not left the first latch 18 '.
  • This mechanism makes it possible to synchronize the positioning of the trip lever locks 18 ', 18 "with the positions of the trip 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 “of the respective auxiliary power source 2.
  • the two locking cams 26', 26" are mounted integral on the wheel 28 and superimposed so as to be out of phase one by one. 180 ° relative to each other.
  • 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 latch 24', 24". Said trigger stars 20 ', 20 “are mounted integral with the drive star 22 driven by the trigger pawl 16 at each passage in second. position of the trigger lever 12. The trigger stars 20 ', 20 “are out of phase with each other by one step so as to alternately drive the latches 24', 24" of the auxiliary power source 2 in the unlocked position each time the release lever 12 is moved to the second position.
  • Each of the locks 24 ', 24 "cooperates respectively on the one hand with its locking cam 26', 26” which abuts on the spout 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 move 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 latch 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 latch 18 'and the locking mechanism 5 is in the locked position , the locking cam 26 'being in abutment against its latch 24', the other locking cam 26 "being positioned at 180 °, as shown in the figure. figure 2 .
  • the auxiliary energy source 2 is blocked, the torque it exerts being retained by the locking mechanism 5.
  • the control mobile 8 carried by the seconds hand and rotating counterclockwise, actuates the first release lever latch 18 'by its control cam 8' and causes it to pivot. clockwise by releasing the trigger lever 12 from its hook 18b.
  • the release lever 12 under the action of its spring, pivots at A counterclockwise from its first rest position to its third intermediate rest position, resting on the hook 18b of the second release lever latch 18 ", as shown in figure 3 .
  • the latches 18 'and 18 "have their own return springs which return them to their initial position. Once the control cam 8' has passed, the first latch 18 ', under the action of its spring, tends to resume its position. starting point but comes into contact and rubs under the foot 12b of the release lever 12. It retains a pre-winding allowing the blocking of the foot 12b the next time the release lever 12 returns.
  • the pawl 16 carried by said trigger lever 12 rotates the drive star 22, and therefore the trigger stars 20 ', 20 " clockwise.
  • the rotation of the trigger stars 20 ', 20 “alternately causes the counterclockwise rotation of the latches 24', 24" of the auxiliary power source 2, and therefore the release of the cams alternately.
  • locking 26 ', 26 " the trigger star 20 'lifts the latch 24' to its unlocked position, thus releasing the locking cam 26 '.
  • the auxiliary source 2 supplies energy to the auxiliary mechanism by rotating the various elements, and in particular the drive train 3 with the wheel 3a carrying the actuator 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 protuberance 12a of the trigger lever 12 is in the course of one of the arms 10a of the actuator 10.
  • the foot 12b of the trigger lever 12 remains in contact with the edge of the actuator.
  • hook 18b of the first release lever latch 18 ' which, after having been 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 actuator 10 driven in anti-clockwise rotation by the auxiliary energy source 2 via the drive train 3, cooperates with the protuberance 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 release lever 12.
  • the foot 12b of the release lever 12 returns to the rear of the hook 18b and is repositioned in the notch 18a of the first lock.
  • release lever 18 ' which, returned by its own return spring by pivoting counterclockwise, locks the release lever 12 in its first rest position.
  • the trigger mechanism 6 is again in its first rest position.
  • the two-lock locking mechanism ensures that the auxiliary power source 2 is locked when the display wheel 4a jumps and ensures that the display disc 4 only jumps on each release.
  • the two trigger stars 20 ', 20 are stars with five teeth, integral with a drive star with ten teeth 22, the assembly still being mounted to pivot on the frame.
  • the triggering pawl 16 is replaced by a triggering anchor 42 integral with the triggering lever 12 and arranged to cause the drive star 22 to rotate clockwise by half a step on each change of position of the control lever.
  • release 12 between its first and second positions, that is to say on each passage from its first rest position to its second maximum position in the counterclockwise direction and on each passage from its second maximum position to its first rest position in clockwise.
  • a jumper 44 is provided which acts on a star with twenty teeth 46 secured to the training star 22, allowing stabilization at each half-step of the training star 22.
  • the two trigger stars 20 ', 20 "are out of phase by half a step.
  • the rotation of the set of four stars formed by the two trigger stars 20 ', 20 “, the drive star 22 and the star 46, driven by the trigger anchor 42 alternately drives the rotation of the bolts 24', 24 “of 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 of the auxiliary energy source 2, while alternately maintaining the locks 24 ', 24 "in a stable intermediate raised position not blocking the locking cams 26', 26" respectively as long as the release lever 12 is in its second maximum position.
  • the position of the trigger stars 20 ', 20 "having only turned a quarter of a pitch prevents the positioning of the bolts 24', 24" in their locked position as long as the trigger lever 12 is in its second position. position.
  • the return of the release lever 12 from its second position to its first position causes a new rotation of the release anchor 42 allowing the latch 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 position. second maximum angular position, making it possible not to put the mechanism in the fault 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 achieved.
  • a simple reassembly of the auxiliary power source 2 will provide the energy necessary to return the trigger lever 12 to its first rest position, then allowing the locking mechanism to move to 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 integral with 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 moves from its second position to its first position.
  • This mechanism makes it possible to keep the latch raised 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 put the mechanism in the fault position if the power reserve of the auxiliary power source 2 is too low to allow the drive of said locking cam 26 ', 26 "and a return of the release lever 12 to its first position.
  • a simple reassembly of the auxiliary energy source 2 will make it possible to supply the energy necessary to return the trigger lever 12 to its first rest position, allowing said locking cam 26 ', 26 "to rotate and 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 control mobile has a force very markedly less than that of the auxiliary energy source which is released to power said auxiliary mechanism.
  • the actuator kinematically linked to the auxiliary energy source makes it possible to replace the release lever so that it is again available for the next trip 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 triggering mechanism, the auxiliary energy source and the auxiliary mechanism and which makes it possible to have a significant relationship between the force supplied by the control mobile and the torque to be released. .
  • the optimization of the lever arms between the control mobile 8 and the trigger lever 12 makes it possible to make the control mobile 8 only withstand the friction due to the spring of the trigger lever 12.
  • the Frictions 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 isolating 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 isolating mechanism 56 makes it possible more particularly to lock the control lever. trigger 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 hours cam 62.
  • the position of the display disks for the units of minutes, tens of minutes and hours is detected by a detection lever 64 provided with two feeler arms 64a, 64b and a control arm 64c of the mechanism insulator, as will be described below. This position cam and rocker mechanism with feelers is known to those skilled in the art.
  • the isolating mechanism 56 is designed 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 passage into 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 passage into the inactive position being controlled by a release mechanism 66.
  • the insulator mechanism 56 comprises an insulator 68 pivotally mounted on the frame between its inactive position as shown in figure. figure 12 and its active position as shown on 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 maintaining 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 latch 70 comprises 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 latch 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 lever 64, to rotate the latch 70 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 isolator 68 in inactive position when the auxiliary mechanism can be driven by the auxiliary energy source 2 and the release lever 12 must no longer be blocked by the isolating 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 pusher (not shown). It is 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 pivot said insulator 68 in position. inactive.
  • the trigger mechanism release 66 is arranged to be able to drive the insulator 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 integral with the control arm 64c of the detection lever 64, allowing the slide 74 to pivot as a function of the position of the detection lever 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 isolating mechanism is as follows, starting from its inactive position as shown in figure figure 12 .
  • the position of detection flip-flop 64 indicates that the hours and tens of minutes discs display zero, but the minute units disc does not yet display the zero so the trigger lever 12 is still needed to release the auxiliary power source 2 and drive the minute units display disk as described above.
  • the hook 70a of the latch 70 cooperates with the second arm 68b of the insulator to keep said insulator 68 in the inactive position, its first arm 68a not being in contact with the arm 12c of the trigger lever 12.
  • the arm 64b of the detection latch 64 falls into the minute units cam 58 so that under the action of its spring (not shown) said latch detection 64 rotates, with its control arm 64c, in the counterclockwise direction, causing, by pressing its finger 73 on the pin 72 of the latch 70, the pivoting of said latch 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 of 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 jump of the display discs is impossible.
  • the cams 58, 60, and 62 of the display disks 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 latch 64 does not correspond to its authorized position to cooperate with the insulator 68, so that an operation of the slide 74 cannot do not rotate the isolator 68 to move it to the inactive position and release the release lever 12.
  • the position of the various display disks is adjusted, at least one of the display disks displaying a value other than zero.
  • the position of the cams 58, 60, 62 is changed accordingly, so that the detection lever 64 as well as its control arm 64c pivot in the clockwise direction.
  • This pivoting of the control arm 64c causes, by means of its pin 78 engaged in the groove 77 of the slide 74, the pivoting of said slide 74 in the counterclockwise direction in order to position it in its authorized position opposite the stop 80 of the third arm 68c of the insulator 68.
  • the pivoting of the detection lever 64 in the clockwise direction releases the latch 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.
  • 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 ringing mechanisms of the alarm type, minute repeater. or big bell, powered by an auxiliary energy source which must be released by a command having a very much lower force.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Control Devices (AREA)
EP20171995.2A 2020-04-29 2020-04-29 Uhrwerk, das einen durch eine hilfsenergiequelle angetriebenen hilfsmechanismus umfasst Active EP3904963B1 (de)

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EP20171995.2A EP3904963B1 (de) 2020-04-29 2020-04-29 Uhrwerk, das einen durch eine hilfsenergiequelle angetriebenen hilfsmechanismus umfasst

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Application Number Priority Date Filing Date Title
EP20171995.2A EP3904963B1 (de) 2020-04-29 2020-04-29 Uhrwerk, das einen durch eine hilfsenergiequelle angetriebenen hilfsmechanismus umfasst

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EP3904963B1 EP3904963B1 (de) 2022-10-26

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH511471A (fr) * 1966-12-21 1971-04-30 Seiko Instr & Electronics Pièce d'horlogerie à affichage digital
EP1658531A1 (de) 2003-07-14 2006-05-24 Eterna SA Display-einrichtung für eine uhr
EP3382469A1 (de) * 2017-03-30 2018-10-03 Richemont International S.A. Uhr mit digitaler zeitanzeige
WO2018193364A1 (fr) * 2017-04-18 2018-10-25 Patek Philippe Sa Geneve Mécanisme horloger

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH511471A (fr) * 1966-12-21 1971-04-30 Seiko Instr & Electronics Pièce d'horlogerie à affichage digital
EP1658531A1 (de) 2003-07-14 2006-05-24 Eterna SA Display-einrichtung für eine uhr
EP3382469A1 (de) * 2017-03-30 2018-10-03 Richemont International S.A. Uhr mit digitaler zeitanzeige
WO2018193364A1 (fr) * 2017-04-18 2018-10-25 Patek Philippe Sa Geneve Mécanisme horloger

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