EP3002643A2 - Chronographenmechanismus mit schaltrad - Google Patents

Chronographenmechanismus mit schaltrad Download PDF

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Publication number
EP3002643A2
EP3002643A2 EP15186151.5A EP15186151A EP3002643A2 EP 3002643 A2 EP3002643 A2 EP 3002643A2 EP 15186151 A EP15186151 A EP 15186151A EP 3002643 A2 EP3002643 A2 EP 3002643A2
Authority
EP
European Patent Office
Prior art keywords
chronograph
column
wheel
column wheel
columns
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
EP15186151.5A
Other languages
English (en)
French (fr)
Other versions
EP3002643B1 (de
EP3002643A3 (de
Inventor
Jacques Gabathuler
Florent Zufferey
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.)
Breitling AG
Original Assignee
Breitling AG
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
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Application filed by Breitling AG filed Critical Breitling AG
Publication of EP3002643A2 publication Critical patent/EP3002643A2/de
Publication of EP3002643A3 publication Critical patent/EP3002643A3/de
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Publication of EP3002643B1 publication Critical patent/EP3002643B1/de
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Classifications

    • 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
    • G04F7/0842—Watches or clocks with stop devices, e.g. chronograph with start-stop control mechanisms
    • G04F7/0857—Watches or clocks with stop devices, e.g. chronograph with start-stop control mechanisms with single push-button or actuation member for start-stop and reset
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B13/00—Gearwork
    • G04B13/02—Wheels; Pinions; Spindles; Pivots
    • G04B13/028—Wheels; Pinions; Spindles; Pivots wheels in which the teeth are conic, contrate, etc; also column wheels construction
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
    • G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
    • G04F7/08—Watches or clocks with stop devices, e.g. chronograph
    • G04F7/0823—Watches or clocks with stop devices, e.g. chronograph with couplings between the chronograph mechanism and the base movement
    • G04F7/0833—Watches or clocks with stop devices, e.g. chronograph with couplings between the chronograph mechanism and the base movement acting perpendicular to the plane of the movement
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
    • G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
    • G04F7/08—Watches or clocks with stop devices, e.g. chronograph
    • G04F7/0842—Watches or clocks with stop devices, e.g. chronograph with start-stop control mechanisms
    • G04F7/0847—Watches or clocks with stop devices, e.g. chronograph with start-stop control mechanisms with column wheel
    • 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
    • G04F7/0804—Watches or clocks with stop devices, e.g. chronograph with reset mechanisms
    • G04F7/0809—Watches or clocks with stop devices, e.g. chronograph with reset mechanisms with single hammers, i.e. one hammer acts on each counter

Definitions

  • the present invention relates to a column wheel chronograph mechanism, more particularly such a three-stroke chronograph mechanism.
  • the column wheel chronograph mechanisms currently found on the market are generally two-stroke, that is to say they include two push buttons, one of which controls the chronograph starts and stops and the other orders the resets.
  • a so-called "three-stroke” chronograph mechanism comprises a single push button whose successive pressures control the start, stop and reset of the chronograph.
  • Such a mechanism may have a structure similar to that illustrated in Figures 1 to 3 .
  • the number of columns and, especially, the kinematics of all parts must be changed.
  • the columns and the beaks that cooperate with them must have very particular shapes. Designing such a three-stroke mechanism is complicated.
  • first and second shall not be construed as indicating the order of the floors.
  • the first column stage may be above or below the second column stage.
  • the chronograph mechanism according to the invention can be easily obtained from a known two-stroke mechanism with a minimum of changes, most of the components being able to keep the same shape and the same cinematic.
  • the column wheel further comprises a ratchet for its actuation by the push button.
  • the first column stage comprises an N number of columns
  • the second column stage comprises the same number N of columns
  • the ratchet comprises 3xN teeth, where N can be equal to four.
  • the column wheel may comprise two monolithic parts assembled to each other, the first part defining the ratchet and one of the first and second column stages, the second part defining the other column stage.
  • the clutch device is vertical type.
  • a three-cycle column wheel chronograph mechanism for a chronograph-watch for example of the wristwatch type, comprises a push button 30, a column wheel 31, a clutch device 32, a mobile chronograph 33 and a resetting device 34.
  • the chronograph mobile 33 comprises a chronograph disc 35 mounted integral around a chronograph axis 36 which carries the chronograph second hand (second hand). Conventionally, the chronograph mobile 33 also includes a drive finger of a minute counter mobile (not shown).
  • the chronograph mobile 33 can be coupled to a drive train 37, or decoupled from the drive train 37, by the clutch device 32.
  • the drive train 37 comprises a chronograph second wheel 38 coaxial with the mobile chronograph 33 and the second wheel 39 of the movement which includes the chronograph mechanism, the second wheel 39 meshing with the chronograph second wheel 38 via a reference 40.
  • the clutch device 32 is preferably vertical type. It comprises a clamp 41 whose one of the two branches comprises a spout 42 which cooperates with the column wheel 31 and the other leg is subjected to the action of a return spring 43, the two branches being in contact with one another in a conventional manner.
  • the clamp 41 is closed ( figure 4 )
  • the chronograph disc 35 is axially distant from the chronograph second wheel 38 and the chronograph mobile 33 is thus decoupled from the drive train 37.
  • the chronograph mobile 33 is immobilized by the friction that exerts the clamp 41 on the chronograph disc 35.
  • the clamp 41 is open ( figure 6 )
  • the chronograph disc 35 is pressed against the chronograph second wheel 38 by a return spring and thus secured to this wheel 38 by friction, and the chronograph mobile 33 is thus coupled to the drive train 37, which rotate it.
  • the resetting device 34 comprises a rocker 44 pivotally mounted about a pivot 45, this rocker 44 being subjected to the action of a return spring 46 and carrying two hammers 47, 48.
  • the reset device 34 also comprises a third hammer 49 subjected to the action of a return spring 50 and slidably mounted in a direction defined by oblong openings 51, 52 of the hammer 49 which receive fixed pins 53, 54.
  • the return spring 50 acts indirectly on the hammer 49, via a lever 55 pivoting about a pivot 56 and one end of which cooperates with a pin 57 carried by the hammer 49.
  • the return spring 50 could act directly on the hammer 49.
  • the hammers 47, 48, 49 are arranged to act respectively on reset cams, or hearts, 58, 59, 60 secured respectively to the chronograph mobile 33, the mobile meter counter inutes and a mobile hour meter.
  • the hammer 49 carries a pin 61 which cooperates with a housing 62 formed in the latch 44.
  • the push-button 30 is connected to a ratchet 63 of the column wheel 31 via a control lever 64 and a pawl or hook 65.
  • the column wheel 31 of the chronograph mechanism according to the invention is shown in FIGS. Figures 7 to 9 . It comprises the ratchet 63, which itself comprises peripheral teeth 66, typically triangular, and a hub 67 traversed by the axis around which is mounted the column wheel 31.
  • a jumper 68 ( figure 4 ) cooperates with the teeth 66 to maintain in position the column wheel 31 between two rotations thereof.
  • the pawl 65 also engages the teeth 66 to advance the tooth ratchet 66 and therefore the column wheel 31 with each pressure exerted on the push button 30.
  • the column wheel 31 comprises two column stages 69, 70, each stage comprising the same number N of columns.
  • the columns of each stage are in the form of solid sectors regularly distributed around the axis of the column wheel 31 and defining voids between them.
  • the columns of the second stage 70 are offset angularly with respect to the columns of the first stage 69.
  • the number of teeth 66 of the ratchet 63 is equal to 3 ⁇ N.
  • the number N is equal to four.
  • the column wheel 31 is in two pieces assembled to one another.
  • the first piece ( Figures 10 to 12 ) defines monolithically the ratchet 63, with its teeth 66 and its hub 67, and the first column stage 69. In their inner part (that is to say, located near the hub 67), the columns 69 define each a recess 71.
  • the second piece ( Figures 13 and 14 ) defines monolithically a hub 72 and the second column stage 70 disposed around the hub 72.
  • the hub 72 is fixed in the housing formed by the recesses 71, for example being driven there.
  • the column wheel 31 may also comprise positioning means for angularly positioning the first and second parts relative to each other during assembly of the latter. These positioning means may for example be in the form of pins each engaged in respective aligned holes of the first and second parts.
  • the first stage of columns 69 cooperates with the spout 42 of the clamp 41.
  • the second stage of columns 70 it cooperates with a spout 74 of the rocker 44. Thanks to the two stages of columns 69, 70, the leading edges 75 ( figure 11 ) of the first stage columns 69, as well as the leading edges 76 ( figure 14 ) columns of the second stage 70 may have a conventional shape, for example the same shape as the leading edges of the column wheel 3 of the two-stroke mechanism illustrated in FIGS. Figures 1 to 3 .
  • the spouts 42, 74 of the clamp 41 and the latch 44 may also have a conventional shape.
  • the rocker 44 with its hammers 47, 48, the hammer 49 and the clamp 41 may be identical to the corresponding elements of the two-stroke mechanism illustrated in FIGS. Figures 1 to 3 and have the same kinematics.
  • the only difference is that the spout 74 of the rocker 44 must be raised in order to cooperate with the second column stage 70 located above the first stage 69.
  • the spout 74 may be an insert attached to the rocker 44.
  • the lever 20 is a latch which, in the stop configuration of the mechanism, is held by the return spring 26 in an angular position where it holds the third hammer 14 in a rest position remote from the cam 17, the pin 15 holding the rocker 9 against the action of its return spring 25, preventing the spout 23 from falling into a void between two columns 8.
  • the lever 55 no longer acts as a lock but simply an intermediate piece between the hammer 49 and the return spring 50.
  • the shape of the lever 55 is therefore slightly modified relative to the lock 20 so that the free end of the return spring 50 always acts on the same side of the protrusion 55a, to rotate the lever 55 in the direction that moves the hammer 49 to the cam 60.
  • the lever 55 could be removed and the return spring 50 could be arranged to act directly on the hammer 49.
  • the figure 4 shows the chronograph mechanism according to the invention in a stop configuration.
  • the lip 74 of the rocker 44 bears against a column of the second stage 70 which holds the rocker 44 against the action of its return spring 46 and also holds the hammer 49 by the cooperation between the pin 61 and the housing 62
  • the spout 42 of the clamp 41 bears against a column of the first stage 69, thus keeping the clamp 41 in a closed position which keeps the chronograph mobile 33 stationary and uncoupled from the drive train 37.
  • the figure 5 shows the chronograph mechanism according to the invention in a reset configuration. From the configuration illustrated in the figure 4 pushing the push button 30 rotates the column wheel 31 with a tooth 63, which allows the spout 74 to fall into a void between two columns 70 and thus the hammers 47, 48, 49 to hit the cams 58 , 59, 60 under the action of the return springs 46, 50. The spout 42 of the clamp 41 remains resting against a column 69.
  • the figure 6 shows the chronograph mechanism according to the invention in an operating configuration. From the configuration illustrated in the figure 5 pushing the push button 30 rotates the column wheel 31 with a tooth 63, causing the rocker 44 and thus the hammer 49 to rise. The spout 42 of the gripper 41 falls into a void between two columns 69. under the action of the return spring 43 which opens the clamp 41. The chronograph mobile 33 is then coupled to the drive train 37 and begins to rotate.
  • the chronograph mechanism according to the invention could use a clutch device of the lateral type.
  • one of the stages of the column wheel could cooperate with a spout of a clutch rocker and a spout of a brake used to immobilize the chronograph mobile when the clutch rocker is in a position disengaged, while the other stage of the column wheel could cooperate with the spout of the reset device.
EP15186151.5A 2014-10-03 2015-09-22 Chronographenmechanismus mit schaltrad Active EP3002643B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH01505/14A CH710205B1 (fr) 2014-10-03 2014-10-03 Mécanisme de chronographe à roue à colonnes à deux étages.

Publications (3)

Publication Number Publication Date
EP3002643A2 true EP3002643A2 (de) 2016-04-06
EP3002643A3 EP3002643A3 (de) 2016-07-20
EP3002643B1 EP3002643B1 (de) 2017-06-28

Family

ID=54544881

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15186151.5A Active EP3002643B1 (de) 2014-10-03 2015-09-22 Chronographenmechanismus mit schaltrad

Country Status (2)

Country Link
EP (1) EP3002643B1 (de)
CH (1) CH710205B1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023105270A1 (fr) * 2021-12-09 2023-06-15 Mb & F Sa Mouvements horlogers à chronographe et leur application dans des pièces d'horlogerie
EP4310606A1 (de) 2022-07-19 2024-01-24 Chopard Technologies SA Chronographenmechanismus mit drei takten und verfahren zur herstellung und umwandlung von chronographenmechanismen mit zwei und drei takten

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH6505A (fr) 1893-04-12 1893-11-30 Paul Perret Mécanisme de seconde au centre, indépendante et chronographe pour montres
CH579794B5 (de) 1973-04-06 1976-09-15 Valjoux Sa
CH678911B5 (de) 1990-04-12 1992-05-29 Ebauchesfabrik Eta Ag
ATE554428T1 (de) 2004-12-20 2012-05-15 Glashuetter Uhrenbetrieb Gmbh Zeitintervallmessungsgerät mit einem schlagwerk
EP1791041A1 (de) 2005-11-24 2007-05-30 Vaucher Manufacture Fleurier SA Uhrwerk
EP2228692A1 (de) 2009-03-12 2010-09-15 ETA SA Manufacture Horlogère Suisse Schaltrad für Chronograph, Chronograph und Taschenchronograph, der ein solches Rad umfasst
EP2602672B1 (de) 2011-12-08 2014-07-16 ETA SA Manufacture Horlogère Suisse Schaltrad und Mechanismus für einen Chronographen, der ein solches Rad umfasst

Non-Patent Citations (1)

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

Also Published As

Publication number Publication date
CH710205A2 (fr) 2016-04-15
EP3002643B1 (de) 2017-06-28
EP3002643A3 (de) 2016-07-20
CH710205B1 (fr) 2018-09-28

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