EP3182229B1 - Chronographenmechanismus mit isoliertem schleppzeigermechanismus - Google Patents

Chronographenmechanismus mit isoliertem schleppzeigermechanismus Download PDF

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Publication number
EP3182229B1
EP3182229B1 EP15200812.4A EP15200812A EP3182229B1 EP 3182229 B1 EP3182229 B1 EP 3182229B1 EP 15200812 A EP15200812 A EP 15200812A EP 3182229 B1 EP3182229 B1 EP 3182229B1
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EP
European Patent Office
Prior art keywords
fly
split
wheel
chronograph
drive member
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP15200812.4A
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English (en)
French (fr)
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EP3182229A1 (de
Inventor
Serge Nicollin
Cédric Mentzer
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Breitling AG
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Breitling AG
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Priority to EP15200812.4A priority Critical patent/EP3182229B1/de
Publication of EP3182229A1 publication Critical patent/EP3182229A1/de
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    • 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
    • G04F7/0876—Split-time function, e.g. rattrappante

Definitions

  • the present invention relates to a split-second chronograph mechanism.
  • chronograph hand In a chronograph, a pointer needle called chronograph hand can be successively set in motion, stopped and reset at the request of the user to measure durations.
  • the user has pushbuttons projecting around the periphery of the chronograph box.
  • Some chronographs include an additional mechanism for controlling a second needle, called a split-second needle.
  • a split-second needle At the start of the chronograph the two hands are superimposed and rotate together.
  • User pressure on a split-second push-button stops the split-second hand while the chronograph hand continues to rotate. The user can thus read the intermediate time indicated by the split-seconds hand.
  • a second press on the split-second push-button allows the split-seconds hand to realign on the chronograph hand and then to turn with the latter, the two hands then remaining superimposed.
  • the two needles can also be set together and reset.
  • Such a catch-up mechanism comprises a catch-up wheel integral with an axis which carries the catch-up needle.
  • a catch-up lever mounted on the catch-up wheel and subjected to the action of a return spring cooperates with a catch-up core integral with the axis which carries the chronograph hand, to secure the chronograph and split-seconds hands. during the measurement of an intermediate time and allow the split-seconds hand to realign on the chronograph hand after the measurement and playback of the split time.
  • a split-second gripper controlled by the split-second push-button stops or releases the split-second wheel by pinching or loosening the periphery of the split-second wheel.
  • Some catch-up mechanisms further comprise an insulator, that is to say a device designed to eliminate the contact between the lever and the split-core when the split-second wheel is stopped by the split-seconds pliers.
  • an insulator that is to say a device designed to eliminate the contact between the lever and the split-core when the split-second wheel is stopped by the split-seconds pliers.
  • Such an isolator makes it possible to avoid any disturbance of the chronograph operation due to the cooperation between the lever and the split-second heart. It generally includes an insulation wheel coaxial with the split-second wheel and the split-seconds heart. A pin driven into the isolation wheel does not act on the split lever when the split-seconds plier leaves the split-second wheel free but moves the split-second lever away from the split-second-half when the split-seconds-clip stops the split-second wheel. Examples of isolator are described in the documents CH 686545 and CH 705614 .
  • the split lever, its return spring and the pin driven into the insulation wheel delimit the space left available to the split core for its rotation when the split-second lever is removed from the heart of the rattrapante.
  • the path that travels through the top of the heart of the jumper must indeed be interrupted by the split lever or by its return spring or by the pin. It follows that the choice of the size of the jumper core depends on the configuration and the position of said lever, spring and pin.
  • a large core is advantageous because at constant moment exerted by the return spring on the catch-up lever the moment exerted by the catch-up lever on the catch-up core is higher or, conversely, at a constant moment exerted by the catch-up lever on the catch-up heart the moment exerted by the return spring on the split-lever is lower.
  • the present invention aims to propose an insulator split-second chronograph mechanism, the catch-up core of which may have a larger size than the cores of the known mechanisms.
  • a split-second chronograph mechanism comprising a split-second wheel integral with a split-second axis, a heart of catches integral with a chronograph axis, a catch-up lever carried by the catch-up wheel, arranged to cooperate with the catch-up heart and subjected to the action of a return spring, a stop member to stop or release the split wheel, and an isolator mechanism for suppressing contact between the split-second lever and the split-second core when the split-second wheel is stopped by the shut-off member, the isolating mechanism comprising an insulation wheel coaxial with the catching-up wheel and in the middle of a jumper and carrying a drive member arranged to act on the catch-up lever against the action of the return spring, characterized in that the driving member is part of a one-piece part comprising , in addition to the drive member, a body extending in a plane perpendicular to the split-seconds and chronograph axes, this body forming the insulation wheel or being rotationally
  • the pins driven in the insulating wheels have a diameter greater than 0.30 mm, generally equal to 0.40 mm. This large diameter is necessary for holding the pin in the insulation wheel.
  • the embodiment of the drive member as part of a one-piece piece further comprising a body extending in a plane perpendicular to the split and chronograph axes allows to confer the body of The drive has a smaller radial dimension, or even much smaller, than that of a conventional drive pin. Therefore, the split core can be enlarged while remaining free to rotate without hitting the drive member when the latter maintains the catch-up lever out of contact with the split core.
  • the catch-up lever and its return spring can be easily adapted, if necessary, to be located also beyond the path traveled by the top of the split-seconds heart.
  • the maximum radial dimension of the drive member is less than or equal to 0.20 mm.
  • the drive member is for example substantially in the shape of a rectangular parallelepiped.
  • the driving member is a portion of a folded blade forming or forming part of the one-piece piece.
  • the drive member is integral with the insulation wheel.
  • the present invention further provides a chronograph comprising a split-second chronograph mechanism as defined above.
  • a split-second chronograph mechanism intended to be part of a chronograph, for example of the wristwatch type, comprises a split-second wheel 1 integral with a split-second shaft 2 intended to carry a split-second needle.
  • the split axis 2 is a tube traversed longitudinally by a chronograph axis 3 intended to carry a chronograph hand (second hand).
  • the chronograph axis 3 is integral with a chronograph wheel (not shown) or connected to the chronograph wheel by a clutch.
  • the chronograph axis 3 is guided in stones 4, 5 respectively mounted in the plate 6 of the chronograph movement and in a chronograph bridge 7a.
  • the split lever 8 pivots about a pivot 10 and comprises a first arm 11 on which the spring acts 9 and a second arm 12 defining a spout 13.
  • the return spring 9 tends to maintain the spout 13 of the catch-up lever 8 in contact with the periphery of a catcher core 14 integral with the chronograph axis 3.
  • the spout 13 could be replaced by a roller mounted on the split lever 8 to be able to roll around the periphery of the split core 14.
  • the split wheel 1 is located axially between the catch-up core 14 and a jumper bridge 7b, the latter being crossed by the catches and chronograph axes 2, 3 and carrying a tube 7c which surrounds said pins 2, 3.
  • the split-second chronograph mechanism further comprises a split-second column wheel 15 comprising on a first level a ratchet 16 and on a second level a wheel 17 defining columns 18 and integral with the ratchet 16.
  • the ratchet 16 is held in position between two rotations by a jumper 19.
  • the columns 18 cooperate with a spout 21 of each arm of a catch-up clamp 22, so that successive rotations of the column wheel 15 controlled by successive presses on the split-second push-button close and open the clamp alternately.
  • the clutch wheel 22 is closed, the clutch wheel 1 is immobilized by friction between the respective friction surfaces 23 of the arms of the split-seconds pliers 22 and the periphery. of the split-back wheel 1.
  • the friction surfaces 23 are out of contact with the split wheel 1 and the latter is therefore free to rotate.
  • the periphery of the split wheel 1 may be provided with a friction member 1a of natural or synthetic rubber, as shown, to increase the friction between the split-plier 22 and the split-second wheel 1.
  • the split-seconds pliers 22 are in the open position and the spout 13 of the retracting lever 8 is in the recess 14a of the second-stage core 14, between the two shoulders 14b of the latter, which solidarises the wheel of catching 1 and the chronograph axis 3 (cf. figure 3 ).
  • the chronograph and split-seconds hands are superimposed and rotate together.
  • the split-second gripper 22 is closed by an action of the push-button push-button via the split-second control member 20 and the column wheel 15 (cf. figure 4 )
  • the split wheel 1 and with it the catch-up needle stops while the chronograph axis 3 and with it the chronograph hand continue to rotate.
  • the split-second wheel 1 is released and, by the contact between the spout 13 of the split-seconds lever 8 and the periphery of the split-second core 14 and the force exerted by the return spring 9 on the split-seconds lever 8, the split-second wheel 1 is turned until the spout 13 finds the cut-out 14 a of the split-second heart 14, a position in which the split-second hand and the chronograph hand are superimposed.
  • the split-second chronograph mechanism further comprises an isolator mechanism for eliminating the contact between the spout 13 of the split-seconds lever 8 and the split-seconds core 14 when the split-second wheel 1 is stopped by the split-seconds pliers 22.
  • This isolator mechanism comprises an insulation wheel 24 coaxial with the split wheel 1 and the split core 14 and mounted idle about the split-second axis 2.
  • the insulation wheel 24 has teeth with wolf teeth that can driving a spout 25 of an isolation control lever 26, a second spout 27 cooperates with the columns 18 of the column wheel 15.
  • a one-piece drive piece 28 (cf. figures 1 and 5 ) is integral in rotation with the insulation wheel 24.
  • This one-piece drive part 28 comprises a body 29 of flat shape extending in a plane perpendicular to the axes of split 2 and chronograph 3 and therefore parallel to the wheels of split-seconds 1 and insulation 24, and a projecting portion 30 extending perpendicular to the plane of the body 29.
  • the projecting portion 30 is a drive member arranged to act on the split lever 8, more precisely on its arm 12.
  • the body 29 comprises a central portion 31 crossed by the axis of split second 2, two ears 32 receiving pins 33 for positioning the one-piece driving part 28 relative to the insulation wheel 24 perpendicularly to the split-seconds 2 and chronograph 3-axes, and a portion 34 of folded blade. A free end portion of the folded blade separated from the portion 34 by a fold 35 constitutes the drive member 30.
  • the split-second shaft 2 can have a function of guiding the one-piece drive part 28.
  • a single lug 32 and a single pin 33 can be provided for positioning the one-piece driving part 28 with respect to the insulating wheel 24.
  • the one-piece driving part 28 is held axially with a slight clearance between the split wheel 1 and the insulation wheel 24.
  • the one-piece driving part 28 could be rigidly fixed to the insulation wheel 24.
  • the pins 33 extend in height into recesses 36 that the split wheel 1 presents. During the simultaneous rotation of the chronograph and split-seconds hands, one of these pins 33 is pushed by an arm 37 of the split-seconds wheel. 1 which separates two recesses 36 (cf. figure 3 ), which makes the insulation wheel 24 integral with the split wheel 1. In this configuration, the drive member 30 does not act on the split lever 8.
  • the split-second gripper 22 When a pressure is applied on the splitter control member 20 rotating the column wheel 15, the split-second gripper 22 closes to stop the split-second wheel 1 and the isolation-control rocker 26, through its spout 25, turns the insulation wheel 24 a predetermined angle in the direction of rotation of the chronograph axis 3 and then maintains in position the insulation wheel 24 (cf. figure 4 ).
  • the one-piece drive piece 28 rotatably connected to the insulation wheel 24 moves from its rest position illustrated in FIG. figure 3 at an insulation position illustrated in the figure 4 , allowing the drive member 30 to move the catch-up lever 8 away from the take-off core 14 against the action of the return spring 9.
  • the chronograph hand and the chronograph shaft 3 can continue to turn without the tweeter lever 8 can disrupt their rotation.
  • the split-second gripper 22 reopens to release the split wheel 1 and, at the same time, the control rocker insulation 26 returns to its position illustrated in FIG. figure 3 by rotating the insulation wheel 24 in the opposite direction to the direction of rotation of the chronograph axis 3 to return to its initial position relative to the split wheel 1.
  • the split lever 8 released by the drive member 30 returns to contact with the catcher core 14 under the action of its return spring 9 to synchronize the split-second needle with the chronograph hand.
  • chronograph mechanism The other components of the chronograph mechanism according to the invention (chronograph column wheel, clutch device, reset device, etc.) are not described because conventional.
  • the drive member 30 occupies little space between the catch-up lever 8 and the split core 14, the occupied space corresponding only to the thickness of the blade 30, 34, 35. Consequently, the size of the split core 14, in particular its length (distance between its shoulders 14b and its top 14c), can be large - and in particular greater than if the one-piece drive piece 28 had the conventional shape of a pin driven into the insulation wheel or assembled to the insulation wheel by another conventional method - while allowing the drive member 30 to be located radially beyond the path traveled by the top 14c of the catching heart 14 not to be struck by said top 14c when the split wheel 1 is stopped and the chronograph axis 3 continues to rotate.
  • the increase in the size of the split core 14 allowed by the shape of the driving member 30 makes it possible to increase the moment exerted by the split-second lever 8 on the split-second core 14 at constant moment exerted by the spring. 9 on the retractor lever 8. It follows that the needle of catch-up will catch the chronograph hand faster after playing an intermediate time.
  • the increase in the size of the jumper core 14 may be used to reduce the moment exerted by the return spring 9 on the split-second lever 8 at constant moment exerted by the split-second lever 8 on the split-seconds core 14.
  • the moment (s) to be applied by the split-seconds pliers 22 on the split-second wheel 1 and / or by the isolation-control lever 26 on the insulating wheel 24 can be reduced, which is beneficial for the equilibrium of the forces at the split-second column wheel 15 and its jumper 19.
  • the force exerted by the catch-up lever 8 on the catch-up core 14 is lower, the forces of reaction to the pivots of the split-second shaft 2 during the synchronization of the split-second needle on the chronograph hand are reduced.
  • the maximum radial dimension D in any plane P perpendicular to the split-seconds 2 and chronograph 3 axes and passing through the split-core 14 and the driving member 30 is less than or equal to 0.25 mm, preferably less than or equal to 0.20 mm and more preferably equal to about 0.15 mm.
  • radial dimension is meant the dimension of the driving member 30 along a straight line perpendicularly intersecting the imaginary axis of common rotation A of the split-seconds 2 and chronograph 3 axes, of the split-second core 14 and wheels of
  • maximum radial dimension means, in a given plane P, the maximum of the radial dimension of the drive member 30 when the angular position of said straight line is varied. perpendicular to the imaginary axis of rotation A.
  • the one-piece character of the assembly 30, 24 makes it possible to obtain a drive member 30 having the radial dimension as mentioned above without causing any problem in keeping the drive member 30 on the wheel of insulation 24.
  • the drive member 30 is in the shape of a rectangular parallelepiped. It could nevertheless have another form, for example a cylindrical shape. In the latter case, the maximum radial dimension mentioned above would be the diameter of the cylinder.
  • the driving member 30 and the catch-up lever 8 are closer to the center of the catching core 14, that is to say of the imaginary axis of rotation A, that is the catch-up lever 8 (including its spout 13 or, alternatively, its roller), when the wheel 1 is stopped by the split-second gripper 22.
  • the drive member 30 is closer to the center of the catching core 14, that is to say the imaginary axis of rotation A, that is the return spring 9, when the 1 is stopped by the split-second gripper 22.
  • the driving member 30 keeps the split-second lever 8 away from the split-seconds core 14, if a center circle is drawn on the center or the imaginary axis of rotation A of the catching core 14 and that one gradually increases its radius, it is the drive member 30 that this circle will meet first. In this way, the space available for the split core 14 can be optimized. However, this feature is not mandatory.
  • a part of the catch-up lever 8 and / or of its return spring 9 may indeed be slightly closer to the center of the catchestrap core 14 than is the drive member 30.

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

Claims (8)

  1. Chronographenmechanismus mit Zwischenzeitvorrichtung, der ein Zwischenzeitrad (1), das fest mit einer Zwischenzeitwelle (2) verbunden ist, ein Zwischenzeitherz (14), das fest mit einer Chronographenwelle (3) verbunden ist, einen Zwischenzeithebel (8), der durch das Zwischenzeitrad (1) getragen wird, angeordnet ist, um mit dem Zwischenzeitherz (14) zusammenzuwirken, und der Wirkung einer Rückholfeder (9) unterliegt, ein Sperrorgan (22) zum Sperren oder Freigeben des Zwischenzeitrads (1) und einen Isolatormechanismus (24 bis 35) zum Beseitigen des Kontakts zwischen dem Zwischenzeithebel (8) und dem Zwischenzeitherz (14), wenn das Zwischenzeitrad (1) durch das Sperrorgan (22) gesperrt wird, umfasst, wobei der Isolatormechanismus (24 bis 35) ein Isolationsrad (24) umfasst, das koaxial zum Zwischenzeitrad (1) und zum Zwischenzeitherz (14) ist und ein Antriebsorgan (30) trägt, das angeordnet ist, um auf den Zwischenzeithebel (8) gegen die Wirkung der Rückholfeder (9) zu wirken, dadurch gekennzeichnet, dass das Antriebsorgan (30) Teil eines Teils (28) aus einem Stück ist, das über das Antriebsorgan (30) hinaus einen Körper (29) umfasst, der sich in eine Ebene senkrecht zu den Zwischenzeit- (2) und Chronographenwellen (3) erstreckt, wobei dieser Körper (29) das Isolationsrad (24) bildet oder drehfest mit dem Isolationsrad (24) verbunden ist, und dadurch, dass in jeder Ebene (P), die senkrecht zu den Zwischenzeit- (2) und Chronographenwellen (3) ist und das Zwischenzeitherz (14) und das Antriebsorgan (30) durchquert, die maximale radiale Abmessung (D) des Antriebsorgans (30) kleiner oder gleich 0,25 mm ist.
  2. Chronographenmechanismus mit Zwischenzeitvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass in jeder Ebene (P), die senkrecht zu den Zwischenzeit- (2) und Chronographenwellen (3) ist und das Zwischenzeitherz (14) und das Antriebsorgan (30) durchquert, die maximale radiale Abmessung (D) des Antriebsorgans (30) kleiner oder gleich 0,20 mm ist.
  3. Chronographenmechanismus mit Zwischenzeitvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass in jeder Ebene, die senkrecht zu den Zwischenzeit- (2) und Chronographenwellen (3) ist und das Zwischenzeitherz (14), das Antriebsorgan (30) und den Zwischenzeithebel (8) durchquert, das Antriebsorgan (30) näher an dem Mittelpunkt des Zwischenzeitherzens (14) liegt als der Zwischenzeithebel (8), wenn das Zwischenzeitrad (1) durch das Sperrorgan (22) gesperrt wird.
  4. Chronographenmechanismus mit Zwischenzeitvorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass in jeder Ebene, die senkrecht zu den Zwischenzeit- (2) und Chronographenwellen (3) ist und das Zwischenzeitherz (14), das Antriebsorgan (30) und die Rückholfeder (9) durchquert, das Antriebsorgan (30) näher am Mittelpunkt des Zwischenzeitherzens (14) liegt als die Rückholfeder (9), wenn das Zwischenzeitrad (1) durch das Sperrorgan (22) gesperrt wird.
  5. Chronographenmechanismus mit Zwischenzeitvorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das Antriebsorgan (30) im Wesentlichen die Form eines rechtwinkligen Parallelepipeds aufweist.
  6. Chronographenmechanismus mit Zwischenzeitvorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das Antriebsorgan (30) ein Abschnitt einer gebogenen Klinge (30, 34, 35) ist, die das Teil aus einem Stück (28) bildet oder Teil davon ist.
  7. Chronographenmechanismus mit Zwischenzeitvorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das Antriebsorgan (30) aus einem Stück mit dem Isolationsrad (24) ist.
  8. Chronograph, der einen Chronographenmechanismus mit Zwischenzeitvorrichtung nach einem der Ansprüche 1 bis 7 umfasst.
EP15200812.4A 2015-12-17 2015-12-17 Chronographenmechanismus mit isoliertem schleppzeigermechanismus Active EP3182229B1 (de)

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EP15200812.4A EP3182229B1 (de) 2015-12-17 2015-12-17 Chronographenmechanismus mit isoliertem schleppzeigermechanismus

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EP15200812.4A EP3182229B1 (de) 2015-12-17 2015-12-17 Chronographenmechanismus mit isoliertem schleppzeigermechanismus

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EP3182229A1 EP3182229A1 (de) 2017-06-21
EP3182229B1 true EP3182229B1 (de) 2018-04-25

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4202577A1 (de) * 2021-12-21 2023-06-28 Manufacture d'Horlogerie Audemars Piguet SA Wippevorrichtung eines uhrwerks

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH686545B5 (fr) 1994-04-07 1996-10-31 Patek Philippe Sa Chronographe à rattrapante à isolateur.
CH705614B1 (fr) 2011-10-06 2016-02-15 Patek Philippe Sa Geneve Ensemble levier de rattrapante et cœur de rattrapante et mécanisme comprenant un tel ensemble.
CH709153A1 (fr) * 2014-01-16 2015-07-31 Richemont Int Sa Mécanisme rattrapante à isolation et pièce d'horlogerie mécanique comportant un mécanisme de chronographe muni de ce mécanisme rattrapante à isolation.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4202577A1 (de) * 2021-12-21 2023-06-28 Manufacture d'Horlogerie Audemars Piguet SA Wippevorrichtung eines uhrwerks
WO2023119079A1 (fr) * 2021-12-21 2023-06-29 Manufacture D' Horlogerie Audemars Piguet Sa Dispositif de bascule d'un mécanisme horloger

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