• 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 timepiece displaying the current time and comprising at least a first and a second display device of a magnitude linked to time, these first and second display devices each being driven by a mechanism of drive comprising a driving wheel (2) itself driven by the movement of the timepiece, at least the driving wheel (2) of one of the drive mechanisms carrying a finger (4) by which it drives the corresponding display device. The finger (4) is friction mounted on the driving wheel (2; 2a).
    公开号:CH715087B1
    申请号:CH00126/08
    申请日:2008-01-28
    公开日:2019-12-30
    发明作者:Mahler Olivier；Bron Alphonse
    申请人:Cie Des Montres Longines Francillon S A；
    IPC主号:
    专利说明:

    Description: The present invention relates to a timepiece displaying the current time and comprising at least a first and a second device for displaying a quantity linked to time, as well as a mechanism for adjusting a device. of a temporal magnitude. More specifically, the present invention relates to an adjustment mechanism making it possible to ensure that a display device of a temporal magnitude such as a date display device will increment as close as possible near midnight. . The invention also relates to a method for adjusting the instant when the indication provided by a device for displaying a temporal magnitude of a timepiece is incremented.
    Timepieces which, in addition to the current time, are capable of providing at least two time-related indications such as the date and the day are already known in the state of the art. An example of such a type of timepiece is shown in connection with FIGS. 1 and 2 annexed to the present patent application and which correspond respectively to a plan view of the dial of the timepiece and to a plan view of the display mechanism for time quantities.
    Designated as a whole by the general reference numeral 3, the timepiece comprises in its center a time switch formed by an hour hand 5a, a minute hand 5b and a second hand 5c which move at above a circular dial 7. The spindle mechanism has already been described in European patent application EP 1 544 691 in the name of the applicant and will therefore not be described further here.
    The timepiece, the display mechanism of temporal quantities is shown in plan in fig. 2 is a time zone watch comprising a 24-hour retrograde display corresponding to the local time of the place where the wearer of the watch usually resides and a 12-hour display corresponding to the time zone of the place where the wearer of the watch temporarily stays .
    Watch 3 is completed by:
    - a retrograde date display formed by a hand 9a which moves in front of a graduation 9b in an arc of a circle which extends between the "1" and the "31";
    - a retrograde display of the day formed by a hand which moves along a graduation 11b marked from "Monday" to "Sunday";
    - a 24-hour retrograde display formed by a hand 13a which moves along a graduation 13b in an arc of a circle which extends between "0" and "24".
    The display of the watch is completed by an indication of small seconds 15.
    As seen in FIG. 2, the display mechanism of temporal quantities notably comprises in its center a reference 1 which is integral with an hour wheel 1a. In other words, the reference 1 rotates clockwise and makes one complete revolution in twelve hours. This reference 1 meshes with a date driving wheel 2 which rotates counterclockwise at the rate of one revolution in twenty-four hours. This date driving wheel 2 carries a finger 4 by which it drives at the rate of one step per day a date wheel 6 which is indexed by a jumper 8 and which carries a cam 10. In one place of its profile, the cam 10 has a steep flank 12 which marks the passage between the calendar of the last day of a given month and the calendar of the first day of the following month, in other words between the calendar "31" and the calendar "I".
    The display mechanism of temporal quantities is completed by a control rocker 14 provided at one of its ends with an arm 16 by which it bears against the cam 10 during normal operation, and comprising at its other end a rake 18 by which it meshes with a date display wheel 20 which carries the date indicator 9a (not visible in fig. 2). The control rocker 14 is pivoted at 22 while a second rocker called the return rocker 24 is pivoted at 26. This return rocker 24 has a structure similar to that of the control rocker 14, in particular comprising a rake 28 by which it meshes with the date display wheel 20. As can be seen on examining FIG. 2, the return lever 24 is constrained by a spring element 30 which tends to make it rotate clockwise. In turn, the return lever 24 therefore tends to rotate the control lever 14 clockwise and to keep its arm 16 in abutment against the profile of the cam 10.
    As can be seen on examining the drawing, in the example shown the spring element 30 comes integrally with the return lever 24 and is in abutment against a stop 32 for its pre-winding. To achieve this result, this flip-flop can be produced for example by a LIGA photoengraving technique. It goes without saying, however, that the spring element 30 could be produced in the form of a separate part from the return lever 24.
    In addition to the date display device, the display mechanism of time quantities shown in fig. 2 includes a day display device which essentially has the same structure as the date display device. More specifically, this day display mechanism comprises a day driving wheel 2a which rotates counterclockwise while being driven by the reference 1. This day driving wheel 2a carries a finger 4a by which it drives at the rate of a not a day a day wheel 6a which has fourteen teeth and which therefore performs one complete revolution in fourteen days. For this purpose, the day wheel 6a carries a cam 10a which has a profile of
    CH 715 087 B1 double cam with two steep sides 12a! and 12a 2 which are symmetrical with respect to the geometric center of said cam 10a. Each of the two abrupt sides 12aj and 12a 2 of the cam 10a marks the passage of the indicator of the days of the last day of one week to the first day of the following week, namely from Sunday to Monday. It will be noted that the day wheel 6a is indexed by a jumper 8a.
    The day display device is completed by a control lever 14a which by its arm 16a bears against the profile of the cam 10a and which meshes by its rake 18a with a day display wheel 20a. There is also provided a return lever 24a constrained by a spring 30a and which, at one of its ends, comprises a rake 28a by which it meshes with the day display wheel 20a.
    It has already been specified above that the watch also includes a 24-hour display of local time. Therefore, when correcting the position of the hour and minute hands, it is also necessary to be able to correct the 24-hour indication. To this end, the 24-hour display device comprises a reference 34 driven by the movement of the watch and which meshes with a 24-hour wheel 6b which carries a cam 10b. In one place of its profile, this cam 10b has a steep flank 12b which marks the passage between the twenty-fourth hour of one day and the first hour of the following day. A control rocker 14b is supported by its arm 16b against the profile of the cam 10b and meshes with a 24-hour display wheel 20b via its rake 18b. Similarly, a return lever 24b constrained by a spring element 30b meshes with its rake 28b with the 24-hour display wheel 20b.
    A watch fitted with a single device for indicating a time variable such as a watch which has only a switch for displaying the current time and a date indicator hand does not pose any particular problem. Indeed, the precision of the jump in the indication of the date from one calendar to the next calendar around midnight is ensured by the precision with which the date indicator hand is driven on its axis.
    It is not the same with a watch which includes, for example, a 24-hour display and a date display device with a hand. Indeed, in this case, at the time of assembly, it must be ensured that the arm 16b of the control lever 14b has indeed fallen along the steep side 12b of the cam 10b. This position of the arm 16b of the control lever 14b corresponds precisely to midnight. Having made sure that the arm 16b has indeed fallen along the flank 12b of the cam 10b, it is then possible to drive out the indicator needle from the 24-hour display with precision. Then, the date driving wheel 2 being already mounted, the center wheel 1a and its return 1 are mounted. As the kinematic connection between the center wheel 1a and the return 34 on the one hand, and between the center wheel 1a and the date driving wheel 2 is not the same, there may be an offset of one or more teeth between the gear 1 and the date driving wheel 2. Such a shift between the teeth of the gear 1 and the board 5 of the date driving wheel 2 has the consequence that a time difference of up to 15 to 20 minutes can be observed between the jump at midnight of the 24-hour display and that of the date display device.
    The same problem arises with a watch comprising two display devices of a time variable such as the indication of the date and the indication of the day. When the arm 16 of the control lever 14 has fallen along the steep side 12 of the cam 10, it is known that it is midnight. We can then precisely drive out the display switch for the current time and the date indicator hand. But since the kinematic connections between the reference 1 and the date driving wheel 2 on the one hand, and between the reference 1 and the day driving wheel 2a on the other hand are not the same, there may be an offset of several minutes between the jumps of the date indicator hand and the day indicator hand.
    It will be understood that such offsets between the jumps of the indicator needles of the different time quantities are not appreciated by the wearer of the watch.
    The present invention aims to remedy this problem by providing a mechanism for precisely adjusting the instant of the jump of a display device of a temporal magnitude in a timepiece. The present invention also relates to a method for adjusting the time when the indication provided by a device for displaying a time quantity of a timepiece is incremented.
    To this end, the present invention relates to a timepiece displaying the current time and comprising at least a first and a second display device of a magnitude linked to time, these first and second display devices each being driven by a drive mechanism comprising a drive wheel itself driven by the movement of the timepiece, at least the drive wheel of one of the drive mechanisms carrying a finger by which it drives the device corresponding display, the timepiece being characterized in that the finger is frictionally mounted on the driving wheel.
    Thanks to these characteristics, the present invention provides a timepiece in which the jumps of information provided by the first and second display devices can be very precisely synchronized to occur almost simultaneously. Indeed, during assembly of the timepiece, the first device for displaying a quantity linked to time is synchronized with the display of the current time so that the displayed quantity is incremented by not at the passage of a specific hour, typically midnight. As for the second display device, the position of the finger can be adjusted relative to the position of the driving wheel which is determined by the position of the kinematic chain which connects this driving wheel to the movement by moving the finger relative to the board. the driving wheel, which is made possible by their friction coupling. In doing so, we modify
    CH 715 087 B1 also the position of the finger relative to the display device which it drives, which makes it possible to precisely adjust the instant when the displayed quantity will increase.
    According to a complementary feature of the invention, a first display device can be a date display device, a second display device can be a day display device and a third display device may be a 24-hour display, the timepiece comprising any one of the combinations of at least two of these display devices.
    According to another characteristic of the invention, the display devices each include a needle indicator.
    According to yet another characteristic of the invention, the finger is made integral with a spring by a first pin around which it can pivot, the pivot angle of said finger being limited by a second pin with which it is integral and which is engaged in a light formed in the plate of the driving wheel, the spring holding the finger in a position in which the latter is engaged with the teeth of a driven wheel of the display device to drive this wheel in clockwise or counterclockwise, the spring being frictionally mounted on the driving wheel to be able to make up for any play, an opening being made for this purpose in the plate of the driving wheel so as to be able to engage a tool making it possible to move said spring relative to to the drive wheel board.
    Other features and advantages of the present invention will more clearly match the detailed description which follows of an embodiment of the timepiece according to the invention, this example being given purely by way of illustration and not limitation only in conjunction with the attached drawing in which:
    fig. 1 already cited, is a plan view of the dial of the timepiece to which the invention applies;
    fig. 2 already cited, is a plan view of the display mechanism of the temporal quantities;
    fig. 3 is a plan view of a drive mechanism of a time-related magnitude display device according to the invention;
    fig. 4 is a sectional view of the mechanism of FIG. 3, and fig. 5 is a plan view of a simplified embodiment of the invention.
    The present invention proceeds from the general inventive idea which consists in providing a timepiece capable of displaying at least two time quantities in addition to the current time, the display of these time quantities being linked to that of the current time and to be changed simultaneously with the passage of a specific time, typically midnight. The display devices of a time variable can be a date display device, a day display device, a 24-hour display device or the like. The precision with which the time quantity, for example the date, displayed by the first display device is incremented by one step at midnight, is only a function of the precision with which the date indicator hand is driven on its axis. On the other hand, the instant when the temporal magnitude, for example the day, displayed by the second display device is incremented by one step at midnight passage is determined by the position of the driving wheel of the day display device and therefore by the position of the center wheel. Until now, there was no means available for fine-tuning the jump of the day indicator hand, so that a lag of up to 15 to 20 minutes could be observed between the time when the jump of the date indicator hand and the time when the day indicator hand jump, which was not very satisfactory for the wearer of the watch. The present invention provides a drive mechanism comprising a driving wheel which is driven by the gear train of the movement of the timepiece and which itself drives a display device of a temporal magnitude via a finger mounted on friction on the driving wheel. Thanks to the fact that the finger is frictionally mounted on the driving wheel, its position relative to the latter can be modified, and therefore the moment when this finger will actuate the display device of the time quantity can be adjusted. It is therefore possible, by means of a precise driving out of the indicator needle of the first display device and the adjustment of the relative position of the driving wheel and of the finger driving the second display device, ensure that the indications provided by the two display devices will be incremented at the desired time simultaneously or almost simultaneously.
    The present invention will be described in connection with the date display device shown in connection with Figs. 1 and 2 described above. It goes without saying that this example is given purely by way of illustration, and that the present invention can be applied in an identical manner to the day display device also shown in FIGS. 1 and 2 annexed to this patent application. More generally, the present invention applies to any type of display of a magnitude linked to time as also the indication of the month of the year or the moon phases.
    The drive mechanism according to the invention is shown in plan and in section respectively in FIGS. 2 and 3 appended to this patent application. Referred to as a whole by the general reference numeral 36, this mechanism comprises a date driving wheel 2 which is driven by the hour wheel 1 a of the movement of
    CH 715 087 B1 the timepiece via the reference 1 and which in turn drives the date wheel 6 of the date display device via the finger 4.
    The finger 4 is carried by the driving wheel 2. For this purpose, the finger 4 has an oblong opening 38 by which it is engaged on a hub 40 of said driving wheel 2. A spring 42 holds the finger 4 in a position in which this finger 4 is engaged with the teeth of the date wheel 6 to drive the latter clockwise or counterclockwise.
    As can be seen on examining Figs. 3 and 4, the spring 42 is disposed between the plate 5 of the driving wheel 2 and the finger 4. For this purpose, the spring 42 has a circular opening 44 having two diametrically opposite ears 46a and 46b by which it is frictionally engaged on the hub 40 of said driving wheel 2. It will be noted that in normal operating conditions, the spring 42 is stationary relative to the driving wheel 2. The friction mounting of said spring 42 on said driving wheel 2, enabled by the presence of two ears 46a and 46b, is provided to allow fine adjustment of the drive mechanism 36 according to the invention as described below.
    The finger 4 is coupled with the spring 42 by means of a pin 48. This pin 48 is driven into the finger 4 but is free to pivot in an opening made in the spring 42 in which it is engaged. This pin 48 constitutes the pivot point of the finger 4. There is provided a second pin 50 also driven into the finger 4 and which is engaged in an oblong opening 52 formed in the driving wheel 2 in which this pin 50 is free to move . As can be seen on examining fig. 3, the pin 50 is positioned in a notch 54 provided towards the free end 56a of an elastic arm 56 of substantially circular shape of the spring 4.
    In normal operating conditions as illustrated in fig. 3 of the drive mechanism 36 according to the present invention, the finger 4 must be rigid. By this is meant that the finger 4 must be able to drive the date wheel 6 clockwise as counterclockwise without arming in the manner of an instantaneous or semi-instantaneous spring mechanism. It is also recalled that by normal operating conditions is meant the periods when the reference 1 drives the driving wheel 2 either because this reference 1 is driven by the movement of the timepiece in a clockwise direction, or because this reference 1 is driven clockwise or counterclockwise by actuation of a winding stem for setting the time for example. In other words, in normal operating conditions, the reference 1 turns and drives the driving wheel 2 which itself drives the date wheel 6. This is made possible by the fact that the spring 42 exerts on the finger 4 a sufficient holding torque to allow said finger 4 to overcome the slight torque exerted by the date wheel 6. Similarly, finger 4 is in abutment by the semi-circular part 38a of its oblong opening 38 against the hub 40 of the wheel coach 2.
    As already mentioned above, the spring 42 is mounted almost permanently on the hub 40 of the driving wheel 2 so that only a tool 58 engaged in an opening 60 formed in said driving wheel 2 at of a notch 62 of the spring 42, makes it possible to slightly move said spring 42 relative to said hub 40 by a few degrees clockwise or counterclockwise to make up for any play and synchronize the date jump with the day jump.
    It goes without saying that the present invention is not limited to the embodiment which has just been described and that various modifications and simple variants can be envisaged by those skilled in the art without departing from the scope of the invention as defined by the appended claims. It will be understood in particular that, in the case of a watch equipped with a date display device of the type described above and an additional display device, for example of the day, if the drive mechanism of the date display device is produced in accordance with the invention, it is not necessary to provide a similar mechanism for driving the day display device. In fact, we first mount the driving wheels, then the wheels that carry the cams and finally the return to the center. The mechanism is then advanced until the rake of the display device which, if necessary, is not equipped with the device according to the invention, is ready to fall along the steep side of the cam, then the position of the finger of the other display device is adjusted so that the corresponding rake is also ready to fall along the steep profile of the cam against which it bears. In the case where the two display devices of a temporal magnitude are both equipped with a frictionally mounted finger, it suffices to observe which of the two rakes falls first and then to adjust the position of the finger of the another display device so that the corresponding rake falls at the same or almost the same time as the other rake. Finally, simply drive the indicator needles on their respective axes.
    A simplified embodiment of the invention is shown in connection with FIG. 5 annexed to the present patent application. According to this embodiment, the finger 64 is mounted directly at friction on the hub 40 of the driving wheel 2 via an opening 66. It is thus possible to overcome the spring 42, which considerably simplifies the construction of the mechanism and therefore allows to achieve cost savings. The finger 64 must however be slightly modified in order to present a notch 68 in which the tool 58 can be engaged in order to allow the fitter to slightly rotate the finger 64 a few degrees clockwise or counterclockwise and thus ensure almost perfect synchronism of the jumps of the indicators of a temporal magnitude.
    CH 715 087 B1
    权利要求:
    Claims (12)
    [1]
    claims
    1. Timepiece displaying the current time and comprising at least a first and a second display device of a quantity linked to time, these first and second display devices each being driven by a drive mechanism comprising a driving wheel (2; 2a) itself driven by the movement of the timepiece (3), at least the driving wheel (2; 2a) of one of the drive mechanisms carrying a finger (4; 4a; 64) by which it drives the corresponding display device, the timepiece (3) being characterized in that the finger (4; 4a; 64) is frictionally mounted on the driving wheel (2; 2a) .
    [2]
    2. Timepiece according to claim 1, characterized in that the finger (64) is mounted directly at friction on the hub (40) of the driving wheel (2; 2a).
    [3]
    3. Timepiece according to claim 2, characterized in that the finger (64) is mounted on the hub (40) of the driving wheel (2) via an opening (66) and in that it has a notch (68) in which a tool (58) can be engaged in order to pivot said finger (64) relative to said driving wheel (2; 2a).
    [4]
    4. Timepiece according to claim 1, characterized in that the finger (4; 4a) is frictionally mounted on the driving wheel (2; 2a) by means of a spring (42).
    [5]
    5. Timepiece according to claim 4, characterized in that the spring (42) is disposed between the driving wheel (2; 2a) and the finger (4; 4a), the spring (42) having for this purpose a circular opening (44) provided with two diametrically opposite ears (46a, 46b) by which it is frictionally engaged on the hub (40) of said driving wheel (2; 2a).
    [6]
    6. Timepiece according to claim 5, characterized in that the finger (4; 4a) is made integral with the spring (42) by a pin (48) around which it can pivot, the spring (42) holding the finger (4; 4a) in a position in which it engages the toothing of a driven wheel (6; 6a) of the display device to drive this wheel (6; 6a) clockwise or counterclockwise , the spring (42) being frictionally mounted on the driving wheel (2; 2a) in order to be able to make up for any play, an opening (60) being made for this purpose in said driving wheel (2; 2a) in order to be able to engage a tool (58) for moving said spring (42) relative to the driving wheel (2; 2a).
    [7]
    7. Timepiece according to claim 6, characterized in that the spring (42) has a notch (62) in which the tool (58) is engaged.
    [8]
    8. Timepiece according to one of claims 6 and 7, characterized in that the pivoting angle of said finger (4; 4a) is limited by a second pin (50) of which it is integral and which is engaged in a light (2) formed in the board (5) of the driving wheel (2; 2a).
    [9]
    9. Timepiece according to one of claims 1 to 8, characterized in that it comprises any combination of at least two devices from the following three display devices: a date display device, a day display and 24 hour display.
    [10]
    10. Timepiece according to claim 9, characterized in that the display devices each comprise a pointer indicator (9a; 11a; 13a).
    [11]
    11. Method for adjusting the instant when the indication provided by a device for displaying a time quantity of a timepiece is incremented, this display device being driven by a driving wheel (2; 2a ) itself driven by the movement of the timepiece (3), the driving wheel (2; 2a) carrying a finger (4; 4a) by which it drives the display device, the method being characterized in that that the finger (4; 4a) is frictionally mounted on the driving wheel (2; 2a) and that the angular position of the finger (4; 4a) is adjusted by pivoting it relative to the driving wheel ( 2; 2a) to adjust the instant of triggering of the display device.
    [12]
    12. Adjustment method according to claim 11, characterized in that the finger is pivoted relative to the driving wheel by means of a tool (58).
    CH 715 087 B1

    CH 715 087 B1
    28a 3 9 a

    CH 715 087 B1

    类似技术:
    公开号 | 公开日 | 专利标题
    EP2115537B1|2012-06-20|Timepiece comprising a mechanism for driving a device displaying a time-related value
    EP1918792A1|2008-05-07|Timepiece including a correction mechanism for a device displaying a time quantity
    EP2073076B1|2012-06-13|Alarm clock control mechanism
    EP2428855B1|2019-07-03|Clock piece fitted with a device for displaying predetermined time periods
    CH696218A5|2007-02-15|Timepiece in calendar including a running equation of time device.
    EP1286233B1|2008-01-23|Calendar timepiece comprising an equation-of-time device
    EP2622416A1|2013-08-07|Timepiece
    EP2824517A2|2015-01-14|Clockwork mechanism, clock movement and timepiece
    EP2663902B1|2014-12-03|Timepiece
    CH699794B1|2013-08-15|An aid in maintaining the position of a ring date indicator timepiece.
    CH691086A5|2001-04-12|clockwork perpetual calendar.
    EP1925996A1|2008-05-28|Device for correction of a display mechanism for a timepiece
    CH715087B1|2019-12-30|Timepiece displaying the current time and comprising at least a first and a second device for displaying a quantity linked to time.
    CH699785B1|2014-02-28|time timepiece timetable and calendar.
    EP0479147B1|1995-11-22|Mechanical and/or electromechanical timepiece
    EP3173876A1|2017-05-31|Timepiece calendar system
    EP3173878A1|2017-05-31|Timepiece calendar system
    EP3460588B1|2020-01-01|Date mechanism
    EP1353244B1|2009-09-09|Timepiece with oblong shaped case
    CH697683B1|2009-01-15|Measurement device for e.g. wristwatch, has indicator units comprising respective left and right retrograde hands on both sides of concentric pivoting axles, where retrograde hands are cooperated with parts of graduation, respectively
    EP3246763B1|2019-12-04|Quick correction mechanism for clock piece
    EP2477080B1|2013-11-13|Timepiece showing the time zone corresponding to a selected time
    EP3333640A1|2018-06-13|Running time equation mechanism controlled by a differential device
    CH717539B1|2021-12-30|Drag-type retrograde horological display mechanism equipped with a display disengagement rocker.
    EP3857313A2|2021-08-04|Display mechanism with a single aperture
    同族专利:
    公开号 | 公开日
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CH1572007|2007-01-30|
    [返回顶部]