• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a chronograph mechanism comprising a chronograph wheel (33), a clutch device (32) for coupling the chronograph wheel (33) to a drive train (37), a reset device (34), a column wheel (31) for controlling the clutch device (32) and the reset device (34), and a push button (30) arranged to actuate the column wheel (31) of such that successive presses on the pushbutton (30) control the start, stop and reset of the chronograph mechanism. This mechanism is characterized in that the column wheel (31) comprises a first stage of columns (69) cooperating with the clutch device (32), and a second stage of columns (70) cooperating with the delivery device. zero (34).
    公开号:CH710205A2
    申请号:CH01505/14
    申请日:2014-10-03
    公开日:2016-04-15
    发明作者:Gabathuler Jacques；Zufferey Florent
    申请人:Breitling Ag；
    IPC主号:
    专利说明:

    The present invention relates to a column wheel chronograph mechanism, more particularly such a three-stroke chronograph mechanism.
    [0002] 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 starts and stops of the engine. chronograph and the other commands the resets.
    [0003] FIG. 1 attached shows a known two-stroke chronograph mechanism. It comprises two push buttons 1, 2, a column wheel 3, a clutch device 4 (vertical clutch type), a chronograph mobile 5 and a resetting device 6. The column wheel 3 comprises a ratchet 7 to 2xN teeth and N columns 8 above the ratchet 7, where N is typically equal to 6. The chronograph mobile 5, which carries the chronograph second hand, can be coupled to a drive train 8 or decoupled from this drive train 8 by the clutch device 4. When the chronograph mobile 5 is coupled to the drive train 8, it rotates with the latter. When the chronograph mobile 5 is decoupled from the drive train 8, the latter rotates without driving the chronograph mobile 5 which is immobilized by the clutch device 4. The reset device 6 comprises a rocker 9 which carries two 10,11 hammers arranged to act on cams 12,13 secured respectively to the chronograph mobile 5 and a minute counter mobile. The resetting device 6 also comprises a third hammer 14 cooperating with the rocker 9 via a pin 15 carried by the hammer 14 and received in a housing 16 of the rocker 9, this third hammer 14 being arranged to act on a cam 17 integral with a mobile hours counter. Via a control lever 18 and a pawl 19 which acts on the ratchet 7, the first push button 1 actuates the column wheel 3 which itself controls the clutch device 4 so that each pressing the push button 1 alternately controls the start and stop of the chronograph. Via a control lever 20a, the second push button 2 actuates a latch 20 which unlocks the third hammer 14 and, with it, all the reset device 6, allowing the reset of the chronograph when the Mobile Chronograph 5 is stopped.
    [0004] FIG. 1 shows this mechanism in a stopping configuration. A spout 21 of a clamp 22 of the clutch device 4 bears against a column 8 of the column wheel 3, which keeps the clamp 22 closed, which keeps the chronograph mobile 5 immobilized. A spout 23 of the rocker 9 of the reset device 6 is opposite a vacuum between two columns 8 of the column wheel 3, but it does not fall into this vacuum because the reset device 6 is retained by the lock 20.
    [0005] FIG. 2 shows this mechanism in an operating configuration. From the stop configuration of the mechanism illustrated in FIG. 1, a pressure on the first push button 1 rotates the column wheel 3 of a tooth 7 and the spout 21 of the clamp 22 falls into a void between two columns 8, allowing the branches of the clamp 22 to be moved apart and the release of the chronograph mobile 5 which, by the action of a return spring, is pressed against a wheel 24 of the drive train 8 and secured to the wheel 24 by friction. The chronograph mobile 5 is then coupled to the drive train 8.
    [0006] FIG. Figure 3 shows this mechanism in a reset configuration. From the stop configuration of the mechanism illustrated in FIG. 1, a pressure on the second push button 2 actuates the latch 20 and releases the reset device 6. Under the action of a return spring 25, the spout 23 falls into the vacuum in front of which it was and the hammers 10, 11 strike the cams 12, 13. Under the action of another return spring 26, the hammer 14 strikes the cam 17. The needles of the mechanism are thus reset.
    From the reset configuration illustrated in FIG. 3, pressing the first push button 1 rotates the column wheel 3 with a tooth 7, which acts on the spout 23 to return the reset device 6 to its initial position. More specifically, the action of a column 8 on the spout 23 raises the lever 9 against the action of the return spring 25 and the cooperation between the pin 15 and the housing 16 raises the hammer 14 against the action of the return spring 26. The spout 21 of the clamp 22, it falls in a vacuum between two columns 8 which starts the chronograph (Figure 2).
    A chronograph mechanism called "three-stroke" includes a single push button whose successive pressures control the start, stop and reset the chronograph. Such a mechanism may have a structure similar to that illustrated in FIGS. 1 to 3. However, 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.
    The present invention aims to remedy this drawback and proposes for this purpose a chronograph mechanism comprising<tb> - <SEP> a chronograph mobile,<tb> - <SEP> a clutch device for coupling the chronograph mobile with a drive train.<tb> - <SEP> a reset device,<tb> - <SEP> a column wheel for controlling the clutch device and the reset device, and<tb> - <SEP> a push button arranged to actuate the column wheel so that successive presses on the push button control the start, stop and reset of the chronograph mechanism,<tb> characterized in that the column wheel comprises a first column stage cooperating with the clutch device, and a second column stage cooperating with the reset device.
    The terms "first" and "second" should not be interpreted as indicating the order of the stages. The first column stage may be above or below the second column stage.
    With its two-stage column wheel, the chronograph mechanism according to the invention can be easily obtained from a known two-stroke mechanism with a minimum of changes, most components can maintain the same shape and the same kinematics.
    Typically, the column wheel further comprises a ratchet for its actuation by the push button.
    Preferably, the first column stage comprises a number N of columns, the second column stage comprises the same number N of columns and 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 stages of columns, the second part defining the other column stage.
    In a particular embodiment, the clutch device is vertical type.
    Other features and advantages of the present invention will appear on reading the following detailed description with reference to the accompanying drawings, in which:<tb> figs. 1 to 3, <SEP> already commented, show a two-stroke chronograph mechanism according to the prior art, respectively in stopping, operating (starting) and resetting configurations;<tb> figs. 4 to 6 <SEP> show a three-cycle chronograph mechanism according to the invention, respectively in stop, reset and operating (start) configurations;<tb> figs. 7 to 9 <SEP> respectively show in perspective, in plan view and in section a column wheel used in the mechanism according to the invention;<tb> figs. 10 to 12 <SEP> respectively show in perspective, in plan view and in section a first part forming part of the column wheel; and<tb> figs. 13 and 14 <SEP> respectively show in perspective and in view from below a second part forming part of the column wheel.
    [0017] Referring to FIG. 4, a three-cycle column wheel chronograph mechanism according to the invention, for a chronograph watch, for example of the wristwatch type, comprises a push button 30, a column wheel 31, a clutch device 32, a chronograph mobile 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 whose other branch is subjected to the action of a return spring 43, the two branches being in contact with each other in a classical way. When the clamp 41 is closed (FIG 4), the chronograph disc 35 is moved axially away from the chronograph second wheel 38 and the chronograph mobile 33 is thus decoupled from the drive train 37. In this configuration, the mobile The chronograph disc 35 is immobilized by the friction exerted by the clamp 41 on the chronograph disc 35. When the clamp 41 is opened (FIG 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 coupled to the drive train 37, which rotates.
    The resetting device 34 comprises a rocker 44 pivotally mounted about a pivot 45, this latch 44 being subjected to the action of a return spring 46 and carrying two hammers 47, 48. The device of reset 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 pins fixed 53, 54. In the illustrated example, 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. In a variant, however, 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 cores, 58, 59, 60 secured respectively to the chronograph mobile 33 , the minutes counter mobile and an hours counter mobile. 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 successively a control rocker 64 and a pawl or hook 65.
    The column wheel 31 of the chronograph mechanism according to the invention is shown in FIGS. 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 (FIG 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.
    Above the ratchet 63, 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. Preferably, the number N is equal to four.
    In the example shown, the column wheel 31 is in two parts assembled to one another. The first piece (Figs 10 to 12) defines monolithically the ratchet 63, with its teeth 66 and hub 67, and the first stage of columns 69. In their inner part (i.e., located near the 67), the columns 69 each define a recess 71. The second part (FIGS 13 and 14) monolithically defines a hub 72 and the second column stage 70 disposed around the hub 72. The hub 72 is fixed in housing formed by the recesses 71, for example being driven. 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 latch 44. Thanks to the two floors of columns 69, 70, the edges 75 of the first stage columns 69, as well as the leading edges 76 (FIG 14) of the 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. 1 to 3. The spouts 42, 74 of the clamp 41 and the latch 44 may also have a conventional shape. More generally, 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. 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. For this purpose, the spout 74 may be an insert attached to the rocker 44. Alternatively, of course, it would be possible to swap the first and second stages of columns 69, 70 and raise the spout 42 of the clamp 41 rather than the spout 74 of the latch 44.
    Thus, the only elements to be changed with respect to the two-stroke chronograph mechanism illustrated in FIGS. 1 to 3 are the column wheel 31, the vertical position of the tip of the rocker 44 or the clamp 41, and the lever 55. In FIGS. 1 to 3, 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. When the latch 20 is actuated by a pressure on the push button 2, the top d a protrusion 20a of the latch 20 in contact with the free end 28 of the return spring 26 passes this free end 28 so that the return spring 26 rotates the latch 20 in the direction that it drives the hammer 14 to the cam 17. The rocker 9 is then no longer retained, its spout 23 falls into a void between two columns 8 and the hammers 10, 11 will hit the cams 12, 13. When pressing the push button 1 after delivery at zero, the column wheel 3 is remon the flip-flop 9 against the action of the return spring 25, which tilts back the hammer 14 against the action of the return spring 26 by the cooperation between the pin 15 and the housing 16. In the present invention as illustrated in figs. 4 to 6, 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 with respect 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. However, as already indicated, the lever 55 could removed and the return spring 50 could be arranged to act directly on the hammer 49.
    FIG. 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.
    Fig. 5 shows the chronograph mechanism according to the invention in a reset configuration. From the configuration illustrated in FIG. 4, pressing 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.
    Fig. 6 shows the chronograph mechanism according to the invention in an operating configuration. From the configuration illustrated in FIG. 5, a pressure on the push button 30 rotates the column wheel 31 of a tooth 63, which raises the rocker 44 and thus also the hammer 49. The nozzle 42 of the clamp 41 falls into a gap 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 starts to rotate.
    From the configuration illustrated in FIG. 6, pressing the push button 30 rotates the column wheel 31 by an additional tooth 63 and returns to the configuration of FIG. 4.
    The present invention has been described above by way of example only. It will be apparent to those skilled in the art that modifications can be made without departing from the scope of the claimed invention. For example, instead of a vertical clutch device, the chronograph mechanism according to the invention could use a clutch device of the lateral type. In this case, 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.
    权利要求:
    Claims (6)
    [1]
    1. Chronograph mechanism including- a chronograph mobile (33),- clutch device (32) for coupling the chronograph mobile (33) with a drive train (37),A resetting device (34),- a column wheel (31) for controlling the clutch device (32) and the reset device (34), andA push button (30) arranged to actuate the column wheel (31) so that successive presses on the push button (30) control the start, stop and reset of the chronograph mechanism,characterized in that the column wheel (31) comprises a first column stage (69) cooperating with the clutch device (32), and a second column stage (70) cooperating with the reset device (34). ).
    [2]
    2. Chronograph mechanism according to claim 1, characterized in that the column wheel (31) further comprises a ratchet (63) for its actuation by the push button (30).
    [3]
    Chronograph mechanism according to claim 2, characterized in that the first column stage (69) comprises a number N of columns, the second column stage (70) comprises the same number N of columns and the ratchet (63). includes 3xN teeth.
    [4]
    4. Chronograph mechanism according to claim 3, characterized in that the number N is equal to four.
    [5]
    Chronograph mechanism according to any one of claims 2 to 4, characterized in that the column wheel (31) comprises two monolithic parts assembled to each other, the first part defining the ratchet (63) and one of the first and second stages of columns (69, 70), the second part defining the other column stage.
    [6]
    6. Chronograph mechanism according to any one of claims 1 to 5, characterized in that the clutch device (32) is vertical type.
    类似技术:
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    同族专利:
    公开号 | 公开日
    CH710205B1|2018-09-28|
    EP3002643B1|2017-06-28|
    EP3002643A2|2016-04-06|
    EP3002643A3|2016-07-20|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    CH6505A|1893-04-12|1893-11-30|Paul Perret|Central seconds mechanism, independent and chronograph for watches|
    CH500073A4|1973-04-06|1976-02-13|
    CH678911B5|1990-04-12|1992-05-29|Ebauchesfabrik Eta Ag|
    EP1672442B1|2004-12-20|2012-04-18|Glashütter Uhrenbetrieb GmbH|Instrument for measuring time intervals comprising a striking mechanism|
    EP1791041A1|2005-11-24|2007-05-30|Vaucher Manufacture Fleurier SA|Timepiece movement|
    EP2228692A1|2009-03-12|2010-09-15|ETA SA Manufacture Horlogère Suisse|Column wheel for a chronograph, chronograph and chronograph timepiece comprising such a wheel|
    EP2602672B1|2011-12-08|2014-07-16|ETA SA Manufacture Horlogère Suisse|Column wheel and chronograph mechanism comprising such a wheel|
    法律状态:
    2017-11-30| PVP| Pledging|
    2021-01-29| PCOW| Change of address of patent owner(s)|Free format text: NEW ADDRESS: LEON BREITLING-STRASSE 2, 2540 GRENCHEN (CH) |
    优先权:
    申请号 | 申请日 | 专利标题
    CH01505/14A|CH710205B1|2014-10-03|2014-10-03|Two-stage column wheel chronograph mechanism.|CH01505/14A| CH710205B1|2014-10-03|2014-10-03|Two-stage column wheel chronograph mechanism.|
    EP15186151.5A| EP3002643B1|2014-10-03|2015-09-22|Chronograph mechanism with column wheel|
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