• 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 present invention relates to a mechanism for displaying the date in the form of a large date, for a watch movement, comprising a mobile unit (2) carrying a sequence of the numbers from 0 to 9 presenting the number 1 twice in succession, a mobile tens (6) comprising four locations, one of which has a 0 or is empty, the other locations having a sequence of numbers from 1 to 3, the unit mobile (2) comprising an actuator for the tens mobile ( 6) to advance it by one step at each change of ten, the unit mobile (2) comprising a pinion (44) having eleven teeth, and the display mechanism further comprising: a date wheel (12) comprising thirty-three teeth defining a first toothing (40) in engagement with the pinion (44), and two additional teeth defining a second toothing (42), and a drive member comprising a first actuating surface arranged p or to advance the mobile unit (2) by one step per day, and a second actuating surface (24) arranged to advance the mobile unit (2) by two additional steps each month.
    公开号:CH715152A1
    申请号:CH00840/18
    申请日:2018-07-04
    公开日:2020-01-15
    发明作者:Vandel Philippe
    申请人:Richemont Int Sa；
    IPC主号:
    专利说明:

    Description
    Technical Field [0001] The present invention relates to a date display mechanism in the form of a large date, for a watch movement, comprising
    - a unit mobile comprising a unit display unit carrying a sequence of the numbers from 0 to 9 presenting the number 1 twice in succession,
    - a tens mobile unit comprising a tens display unit comprising four locations, one of which has a 0 or is empty, the other locations having a sequence of numbers from 1 to 3, the units mobile unit comprising an actuating member of the tens mobile arranged to advance the tens display member by one step at each change of ten.
    The present invention also relates to a timepiece movement provided with such a display mechanism as well as a timepiece comprising such a timepiece movement.
    STATE OF THE ART [0003] Various mechanisms for displaying the date in the form of a large date have been known for a long time.
    Certain mechanisms have constructions "in line" or "in series", that is to say that a mobile of the date units is controlled by a mobile driving the corresponding watch movement, while being provided means for actuating the tens of date mobile, such that the latter advances by one step at each change of ten. In these mechanisms, the units mobile typically comprises a display disc for the units having a toothing of thirty-one teeth and bearing thirty-one digits, or three sets of digits from 0 to 9, one of which includes an additional 1 arranged directly after the first 1, to display the 1st of a month after the display of 31 of the previous month. The mobile unit is controlled to make a jump per day and arranged to make a jump to the mobile tens when each change of ten.
    By way of illustration, patent EP 0 940 833 B1 describes and illustrates such a mechanism in which the display disc of the date units has four internal teeth arranged to act on a star secured to the display member of the tens of date, whose axis of rotation is located inside the unit display disc, to rotate it one step at each change of ten.
    Patent EP 1 296 204 B1 describes and illustrates a date display mechanism similar to the previous one, the display disc of the units this time comprising four external peripheral teeth arranged to act on a star secured to the organ d 'display of tens of dates, whose axis of rotation is located outside the unit display disc.
    Other constructions are known, which could be described as "parallel" constructions, which make it possible to produce date display mechanisms more compact than those described above, thanks in particular to the use of '' a disc of units of limited diameter since it only carries a single series of numbers from 0 to 9. These constructions in parallel typically involve a programmed mobile, driven once a day by a mobile for driving the watch movement corresponding and having several levels of teeth, one of which is intended to control the movements of a display unit for the date units and another of which is intended to control the movements of a display unit of the tens of date at each change of ten. The structure of the programmed mobile and the assembly of the complete mechanism can make some of these constructions significantly more complex than in-line constructions, in particular with the adjustments required simultaneously between the programmed mobile and, on the one hand, the mobile of the units and, on the other hand, the mobile of the tens.
    Patent EP 0 529 191 B1 or even patent application EP 2 985 660 A1 present examples of constructions of the “parallel” type.
    Such an approach makes it possible to decouple the drive of the two display units of the units and dozens from one another thanks to the use of the mobile programmed with several distinct teeth. Thanks to this feature, the unit display unit can be simplified and include only a single series of numbers from 0 to 9 which is used to display the units in relation to all the tens. Thus, for an equal number size, a parallel construction typically has a smaller footprint than an in-line construction.
    Disclosure of the invention A main object of the present invention is to provide a construction of date display mechanism for watch movement of the online or series type having a limited size, of the same order as that of certain constructions in parallel.
    To this end, the present invention relates more particularly to a date display mechanism of the type mentioned above, characterized in that the mobile units have a toothing of the units integral in rotation with the display member units and having eleven teeth or a multiple of eleven teeth, and by the fact that the display mechanism further comprises:
    a date wheel comprising thirty-three teeth located in a first plane to define a first toothing arranged in kinematic connection with the toothing of the units, and two additional teeth located in a second plane to define a second toothing, and
    - a drive member comprising a first actuating surface arranged to act on the first toothing once a day, to advance the mobile unit by one step per day, and a second actuating surface arranged to act on the second toothing twice a month, once on the 10th or the 11th and once on the 20th or the 21st, to advance the mobile unit by two additional steps each month.
    Thanks to these characteristics, it is possible to carry out a construction of a date display mechanism in line or in series comprising a display unit for units of limited dimensions since it only carries a series of the digits of 0 to 9, with only the number 1 which is present twice. It is thus possible to take advantage of the simplicity of online construction while benefiting from an advantageous footprint, close to that of parallel construction.
    Preferably, in particular for a question of space, the first toothing is arranged directly in engagement with the toothing of the units.
    According to a preferred embodiment, the drive member comprises a rocker intended to be mounted on a frame element of the watch movement so as to be able to pivot in a plane substantially parallel to the foreground, between a rest position and an actuated position, to act on the date wheel, the first actuation surface being at least partially located in the first plane while the second actuation surface is located outside the first plane but at least partially in the second plan.
    Thanks to these characteristics, in particular the fact that the mobiles of the units and tens and the date wheel are indexed with respect to each other, a construction is simple to implement and compact, but which functions so reliable and robust.
    According to alternative embodiments, it can be provided that the date display mechanism according to the invention is intended to allow the display of an annual calendar, respectively a perpetual calendar. In this case, the mechanism may advantageously include a correction plate integral in rotation with the date wheel and having a notch intended to be actuated by an end-of-month correction arm carried by the lever, the latter also carrying a feeler. months arranged to cooperate with a cam of twelve, respectively with a cam of forty-eight, to define the rest position of the rocker and, consequently, the day of the month, 28, 29 or 30, at which the arm can s '' engage in the notch to bring the date wheel in its orientation corresponding to 31, by rotation of the lever to its actuated position, before the first actuation surface acts on the first level of teeth to pass it through its orientation corresponding to the 1 st of the following month.
    In this case, it is advantageous to provide that the correction board has a spiral-shaped periphery against which the arm is held in abutment under the effect of the action of an elastic member carried by the rocker.
    In general, it can be provided that the actuating member comprises a first long finger integral in rotation with the teeth of the units and intended to cooperate with three short branches of a star with four branches of the tens mobile for passing the tens from 0 to 1, from 1 to 2 and from 2 to 3, and a second short finger integral in rotation with the toothing of the units and intended to cooperate with the fourth, long, branch of the four-pointed star to change the tens from 3 to 0.
    Furthermore, one can also provide that the two additional teeth of the second toothing are arranged in the extension of two teeth of the first toothing.
    The invention also relates to a watch movement advantageously comprising a display mechanism according to the characteristics which have just been stated as well as a twenty-four hour mobile arranged to act once a day on the organ of drive and cause the display unit to move by at least one step. The invention also relates to a timepiece comprising such a timepiece movement.
    BRIEF DESCRIPTION OF THE DRAWINGS Other characteristics and advantages of the present invention will appear more clearly on reading the detailed description of a preferred embodiment which follows, made with reference to the appended drawings given by way of examples not and in which:
    fig. 1a and 1b show the same simplified front view of a display mechanism according to a preferred embodiment of the invention, in a first configuration, respectively with and without the display units of the units and tens of dates;
    fig. 2a and 2b show views similar to the views of FIGS. 1 a and 1 b, in a second configuration of the display mechanism;
    fig. 3a to 3b show views similar to the views of FIGS. 1 a and 1 b, certain components having been hidden, in a third configuration of the display mechanism, and FIG. 4 shows a simplified perspective view of part of the display mechanism in a configuration close to that illustrated in FIG. 2b.
    Mode (s) of Carrying Out the Invention Figs. 1a, 1b, 2a, 2b and 3a, 3b show two by two similar simplified front views of the main components of a date display mechanism 1, in the form of a large date, according to a preferred embodiment of the present invention, in three different configurations corresponding to three successive instants during the operation of the mechanism.
    The display mechanism 1 has here an appearance similar to that of a parallel type mechanism, in particular in terms of size. However, as will become apparent from the following description, the display mechanism 1 is of the online type.
    Typically, the display mechanism 1 comprises a mobile unit of the units 2 comprising a display unit for the date units 4 and a mobile unit for the tens 6 comprising a display unit for the tens of the date 8 arranged one at a time. side by side to display the two-digit value of the date at a given time, in a conventional manner.
    For this purpose, the display unit of the units 4 has the shape of a disc carrying a sequence of the numbers from 0 to 9 having the number 1 twice in succession, while the display member tens 8 presents a general shape of a four-armed star defining four locations presenting a sequence of numbers from 0 to 3.
    Of course, it is possible, as an alternative, to provide that the location of the 0 is empty, in a known manner and without going beyond the ambit of the invention.
    The two display members 4, 8 are here pivoted on ruby bearings in a conventional manner but the person skilled in the art will not encounter any difficulty in implementing any alternative means suitable for assembling the display members to an element of the corresponding watch movement so that they can rotate optimally.
    The tens display member 8 is here partially superimposed on the display member of the units 4, such that a figure of each display member is positioned while being adjacent to a figure of l 'other display member to define a date value in the form of a two-digit number, a large date display.
    In the first configuration illustrated in FIGS. 1a and 1b, the location of the tens member 8 carrying the number 3 is positioned on the display unit of the units 4, the number 0 worn because the latter being positioned immediately next to the display member of the tens 8, so as to display the number 30.
    To ensure the drive of the display members 4 and 8, the display mechanism 1 includes in particular a drive member 10 arranged to be moved by a twenty-four hour mobile (not shown) of the watch movement in which the display mechanism is implemented and for acting on a date wheel 12.
    The operation of the display mechanism 1 according to the invention appears more clearly from the illustrations of FIGS. 1b, 2b and 3b.
    More specifically, it appears from these figures that the drive member 10 comprises a rocker 14 intended to be mounted on a frame element of the watch movement so as to be able to pivot between a rest position and an actuated position. The rocker 14 is illustrated in a rest position in FIG. 1 b.
    The latch 14 can for example be assembled to the frame of the watch movement by means of a bearing screw 16 defining its axis of rotation.
    The lever 14 includes a first arm 18 having a receiving surface 20 intended to receive a twenty-four hour impulse from the watch movement once a day, causing the lever 14 to rotate from its rest position towards its actuated position, in the direction of clockwise rotation in the view of FIG. 1b.
    Of course, it is possible to provide that the lever 14 is actuated daily by another mobile than the twenty-four hour mobile without departing from the scope of the invention, such as for example a seven-pointed star (or other number of branches) which would be activated once a day.
    The lever 14 also has, at a distance from its axis of rotation, first and second actuating surfaces 22, 24 intended to cooperate with the date wheel 12 when the lever 14 pivots towards its actuated position, as visible in fig. 2b.
    Finally, the flip-flop 14 which is shown here is part of a particular optional alternative embodiment of the invention. Indeed, the construction of the rocker 14 as illustrated here is intended to allow the display of a perpetual calendar, that is to say over a four-year cycle taking into account leap years.
    For this purpose, the lever 14 further comprises a feeler 26 intended to cooperate with a conventional forty-eight cam, that is to say a cam whose contour has forty-eight successive segments representative of the length months out of four years. The shorter a month, the closer the corresponding segment is to the center of the cam.
    Thus, going from a longer month to a shorter month, we see that the probe 26 will have turned counterclockwise in the view of FIG. 2b, which implies that the rest position of the rocker 14 will not be the same during different months of different respective lengths.
    In this alternative embodiment, the flip-flop 14 also carries an end-of-month correction arm 28 making it possible to act on the date display members to take into account the length of the current month.
    The correction arm 28 is rotatably mounted on the rocker 14 and undergoes a permanent force exerted by an elastic member 30, here a leaf spring, tending to rotate it in the counterclockwise direction of rotation on the view of the fig. 1 b.
    The free end 32 of the correction arm 28 is intended to cooperate with a correction plate 34, integral in rotation with the date wheel 12, and is therefore kept in permanent abutment against the correction plate under the effect of the action of the leaf spring 30. The correction board 34 has a spiral-shaped periphery, the smallest and largest radii of which are connected to each other by a steep portion defining a notch 36.
    As is apparent from the view illustrated in FIG. 1b, as soon as the free end 32 of the correction arm 28 is engaged in the notch 36, a rotation of the lever 14 clockwise, under the effect of the action of the twenty-four hour mobile, causes the date wheel 12 to rotate in the counterclockwise direction of rotation under the effect of the pressure exerted by the correction arm 28 on the notch 36.
    Referring to FIG. 4, illustrating certain components of the display mechanism 1 in a perspective view, it can be seen that the date wheel 12 has a first toothing 40 having thirty-three teeth located in a first plane, that is to say in the main plane of the date wheel 12, and a second toothing 42 located in a second plane adjacent to the first plane. More precisely, the second teeth are defined by two teeth formed in the extension of two teeth of the first teeth 40. These two teeth of the second teeth 42 are associated one with 11 of each month and the other with 21 of each month.
    Other embodiments are possible for the second toothing, without departing from the scope of the invention, such as by arranging its teeth along a radius different from the radius of the teeth of the first toothing 40.
    It also emerges from the view of FIG. 4 that the first actuating surface 22 of the rocker 14 is at least partially located in the foreground of the first toothing 40 in order to be able to act on the corresponding teeth. The second actuation surface 24 is on the other hand situated outside the first plane of the first toothing 40 and cannot therefore cooperate with the corresponding teeth. On the other hand, the second actuating surface 24 is at least partially located in the second plane of the second toothing 42, which allows it to cooperate with the corresponding teeth when they are in range.
    It is also noted in the view of FIG. 4 that the first toothing 40 has a kinematic connection, being directly engaged here, with a toothing of the mobile unit 2 implemented in the form of a pinion 44 in the present preferred embodiment of the invention, nonlimiting illustrative title. The pinion 44 is integral in rotation with the display member of the units 4 and has eleven teeth or a multiple of eleven teeth.
    Finally, it is noted that the first and second actuating surfaces 22, 24 are made in one piece with a pawl 45 which carries them at its free end and which is rotatably mounted on the rocker 14, also having a member elastic similar to the elastic member 30 formed integrally with it.
    Returning to FIGS. 1a and 1b, these illustrate the display mechanism 1 according to the present invention in the same configuration, the first with the display members 4 and 8 and the second without the display members 4 and 8.
    The configuration illustrated in FIGS. 1a and 1b is that corresponding to the 30th of a month comprising here 30 days, which can be deduced from the fact that the free end 32 of the correction arm 28 is engaged in the notch 36 of the correction board 34.
    Starting from this situation, as soon as a pressure is exerted on the receiving surface 20 aiming to rotate the rocker 14 in the clockwise rotation direction, the correction arm 28 exerts a pressure on the notch 36 inducing a rotation of the date wheel 12 in the counterclockwise direction of rotation. The pinion 44 is then driven in the clockwise direction of rotation to move the display unit from 0 to the first 1 as shown in fig. 2a.
    The stroke made by the rocker 14 at this time, from its rest position, corresponds to advancing one step of the date wheel 12, to change the display from 30 to 31.
    The flip-flop 14 then continues to rotate clockwise, to go to its actuated position. It appears from fig. 2b that, during this movement, the first actuating surface 22 comes into contact with the first toothing 40 while the first 1 of the display member of the units 4 is almost in the display position.
    The action of the first actuating surface 22 on the date wheel 12 causes its rotation by an additional pitch in the counterclockwise direction, causing a rotation of an additional pitch of the pinion 44 in the direction of clockwise rotation resulting in a change in the display from the first 1 to the second 1. This change is illustrated in fig. 3a.
    We understand from these explanations that during a month with 31 days, the first actuating surface 22 is closer to the date wheel 12 in the rest position of the lever 14, and therefore when the end free 32 of the correction arm 28 engages against the notch 36. In this case, the first actuation surface 22 and the correction arm 28 act in concert to rotate the date wheel 12 by one step in the anti-clockwise direction of rotation and therefore to switch the display unit 4 from the first 1 to the second 1.
    Conversely, during the ends of shorter months, the rest position of the lever 14 being further from the date wheel 12, the same goes for the free end 32 of the correction arm 28 which therefore engages earlier in the notch 36 to act on it by covering a larger race when passing from the last day of the month concerned to the 1st of the following month.
    For example, during a month of February with 28 days, the free end 32 has a maximum distance with reference to the date wheel 12 when the lever 14 is in its rest position. Thus, when the lever 14 pivots, the correction arm 28 acts on the date wheel 12 to rotate it counterclockwise by three steps, that is to say to pass the member d display of units 4 from 8 to first 1. At this time, the first actuating surface 22 comes into contact with the first toothing 40 and acts on a corresponding tooth to rotate the date wheel 12 by an additional step , the display unit of the units 4 then passing from the first 1 to the second 1. All of this movement preferably takes place while the lever 14 receives a single pulse.
    Of course, the mode of operation of the display mechanism 1 according to the present disclosure intended to display a perpetual calendar is optional and is only intended to illustrate a possibility of construction and operation among others. It will be noted that the probe 26 can cooperate with a cam of twelve rather than with a cam of forty-eight to set up a work with an annual calendar. It is obviously possible to omit the correction arm 28, the probe 26 and the correction board 34 if one wishes to implement a simple date, The user will then have to correct the date displayed at each end months less than 31 days.
    We understand from the above that the same sequence of numbers from 0 to 9, with its two 1s, is used to display the units, whatever the current ten.
    We have seen that having two 1s one after the other makes it possible to take into account an inevitable rotation of the date wheel 12 when passing from 31 of a given month to 1st of the following month.
    However, it is then necessary to take a measure to ensure correct passages from 10 to 12 and from 20 to 22. Indeed, without special measures, the first 1 would be displayed when passing from 10 to 11 and the second 1 would take the place of the first instead of the 2 a day later, and it would be the same on 20-21 of each month.
    This is where the second teeth 42 come in and the fact that if the display unit of the units has only a sequence of numbers from 0 to 9, the date wheel 12 remains programmed for a full month with its thirty-three teeth of the first teeth 40.
    Thus, it is necessary to index the angular position of the date wheel 12 with that of the display member of the units 4, so that a first of the two teeth of the second toothing 42 is associated to the passage from to 11 or from 11 to 12 of each month and that the second is associated with the passage from 20 to 21 or from 21 to 22 of each month.
    When changing the date "standard", that is to say outside the two passages mentioned above, in the absence of a tooth of the second toothing 42 within reach of the second surface of actuation 24, the latter fulfills no function and passes beside the date wheel 12 without touching it.
    By cons, a first additional tooth of the second toothing 42 is interposed between the tooth of the first toothing 40 associated with the change from 10 to 11 and the tooth associated with the change from 11 to 12. Likewise, an additional tooth of the second toothing 42 is interposed between the tooth of the first toothing 40 associated with the change from 20 to 21 and the tooth associated with the change from 21 to 22.
    Thus, during the passage from 10 to 11 or from 20 to 21, the first actuating surface 22 acts on a tooth of the first toothing 40 to rotate the date wheel 12 by a first step, passing through the display unit of the units 4 from 0 to the first 1, and the second actuation surface 24 acts directly afterwards on a tooth of the second toothing 42 to rotate the date wheel 12 by a second step, to cause the the display unit for units 4 from the first 1 to the second 1. Therefore, a day later, the display unit for units 4 will be well trained to go from second 1 to 2, ie from 11 to 12 or from 21 to 22.
    Alternatively, one can offset one tooth or both teeth of the second toothing 42 by one step back to provide that the date wheel 12 advances only one step to pass the display of 10 at 11 and / or from 20 to 21, while the second toothing 42 would then be arranged to advance it by two steps while passing from the display from to 12 and / or from 21 to 22. In this case, differently to the solution described in the previous paragraph, the first of the display unit of the units 4 is used to display the 11 and / or the 21, the second 1 only passing briefly to the display position during the double jump to pass from 11 to 12 and / or from 21 to 22.
    Regarding the transmission of pulses between the mobile units 2 and the mobile tens 6, the first includes an actuator 46 comprising a first long finger 48 integral in rotation with the pinion 44 and intended to cooperate with three short branches 50 of a star 52 with four branches of the tens mobile 6, for passing the tens from 0 to 1, from 1 to 2 and from 2 to 3. The actuating member 46 further comprises a second short finger 54, integral in rotation with the pinion 44 and, intended to cooperate with the fourth branch 56, long, of the star 52 with four branches to pass the tens from 3 to 0.
    Note that it is possible to implement a different construction to ensure the transmission of pulses between the mobiles of the units 2 and tens 6 without departing from the scope of the invention, such as for example by arranging the fingers and branches mentioned above in different plans.
    In practice, the actuator 46 is advantageously but not limited to being made in one piece with its two fingers 48 and 54.
    It is understood that the tens display member 8 must make a complete revolution with the same period as the date wheel 12, that is to say one month, while the mobile display units 4 makes three turns on itself during the same time.
    On the other hand, the displacements of the display unit of the tens 8 are not made at constant period since the 0 must replace the 3 as soon as after the 31 while the other tens are complete.
    Each step of the tens display unit is associated with a quarter-turn rotation of the four-pointed star 52.
    Thanks to the short branches 50, the long finger 48 can act, once per complete revolution of the mobile unit 2 on itself and three turns in succession, on the star 52 to rotate it one step, without the short finger 54 being able to come into contact with the star. These actions correspond to the passage from 09 to 10, from 19 to 20 and from 29 to 30.
    During the passage from 29 to 30, the long branch 56 of the star 52 is oriented towards the moving body of the units 2, which implies that two days later, that is to say when passing from 31 to the 1st of the month next, the short finger 54 comes into contact with it to advance the tens mobile 8 by an additional step corresponding to the transition from 31 to 1 st .
    Thus, FIG. 1 b illustrates the configuration of the display mechanism 1 after switching from 29 to 30, FIG. 2b illustrating its configuration during the transition from 30 to 31, while FIG. 3b illustrates the case of the change from 31 to 1st while the short finger 54 exerts pressure on the long branch 56 of the star 52 to rotate the latter by an additional step.
    Thanks to the characteristics which have just been described, it is possible to make a construction of date display mechanism in the form of a large date which is both simple to make and assemble and compact.
    The above description sets out to describe a particular embodiment by way of nonlimiting illustration and, the invention is not limited to the implementation of certain particular characteristics which have just been described, like for example the nature and the construction of the drive member, in particular of the rocker or the fact that certain components are arranged in direct engagement whereas they could be simply connected kinematically to each other with the interposition of additional mobiles .
    Those skilled in the art will not encounter any particular difficulty in adapting the content of the present disclosure to their own needs and implementing a simple, annual or even perpetual calendar display mechanism meeting the characteristics of the present invention, in particular comprising a drive member arranged to act once a day on a date wheel comprising thirty-three teeth, itself being arranged to rotate a mobile of the date units, via a toothing comprising eleven teeth and associated with a unit display unit comprising a sequence of numbers from 0 to 9 having the number 1 twice in succession, the units mobile being itself arranged to drive a tens mobile.
    权利要求:
    Claims (9)
    [1]
    claims
    1. Date display mechanism (1) in the form of a large date, for a watch movement, comprising
    - a mobile unit (2) comprising a unit display unit (4) carrying a sequence of the numbers from 0 to 9 presenting the number 1 twice in succession,
    - a tens mobile (6) comprising a tens display member (8) comprising four locations, one of which has a 0 or is empty, the other locations having a sequence of numbers from 1 to 3, said mobile of the units (2) comprising an actuating member (46) of said tens mobile (6) arranged to advance said tens display member (8) by one step at each change of ten, characterized in that said mobile des units (2) comprises a toothing of the units (44) integral in rotation with said display member of the units (4) and having eleven teeth or a multiple of eleven teeth, and in that the display mechanism (1) comprises outraged:
    - a date wheel (12) comprising thirty-three teeth located in a first plane to define a first toothing (40) arranged in kinematic connection with said toothing of the units (44), and two additional teeth located in a second plane to define a second toothing (42), and
    - a drive member (10) comprising a first actuating surface (22) arranged to act on said first toothing (40) once a day, to advance said mobile unit (2) by one step per day , and a second actuation surface (24) arranged to act on said second toothing (42) twice a month, once on 10 or 11 and once on 20 or 21, to advance said mobile unit ( 2) two additional steps each month.
    [2]
    2. Display mechanism (1) according to claim 1, characterized in that said first toothing (40) is arranged directly in engagement with said toothing of the units (44).
    [3]
    3. Display mechanism (1) according to claim 1 or 2, characterized in that said drive member (10) comprises a rocker (14) intended to be mounted on a frame element of the watch movement so as to be able pivot in a plane substantially parallel to said first plane, between a rest position and an actuated position, to act on said date wheel (12), said first actuation surface (22) being at least partially located in said first plane while that said second actuation surface (24) is located outside said first plane but at least partially in said second plane.
    [4]
    4. Display mechanism (1) according to claim 3, when it is intended to allow the display of an annual calendar, respectively of a perpetual calendar, characterized in that it comprises a correction board (34 ) integral in rotation with said date wheel (12) and having a notch (36) intended to be actuated by an end-of-month correction arm (28) carried by said lever (14), the latter also carrying a feeler (26) months arranged to cooperate with a cam of twelve, respectively with a cam of forty-eight, to define said rest position of said lever (14) and, consequently, the day of the month, 28, 29 or 30 , to which said correction arm (28) can engage in said notch (36) to bring said date wheel (12) in its orientation corresponding to 31, by rotation of said rocker (14) towards its actuated position, before said first actuation surface (22) does not act ur said first level of teeth (40) to pass it in its orientation corresponding to the 1st of the following month.
    [5]
    5. Display mechanism (1) according to claim 4, characterized in that said correction board (34) has a spiral-shaped periphery against which said correction arm (28) is held in contact under the effect of the action of an elastic member (30) carried by said rocker (14).
    [6]
    6. Display mechanism (1) according to one of the preceding claims, characterized in that said actuating member (46) comprises a first long finger (48) integral in rotation with said toothing of the units (44) and intended to cooperate with three short branches (50) of a star (52) with four branches of said mobile tens (6) to pass the tens from 0 to 1, from 1 to 2 and from 2 to 3, and a second finger short (54) integral in rotation with said toothing of the units (44) and intended to cooperate with the fourth branch (56), long, of said star (52) with four branches to pass the tens from 3 to 0.
    [7]
    7. Display mechanism (1) according to one of the preceding claims, characterized in that said two additional teeth of said second toothing (42) are arranged in the extension of two teeth of said first toothing (40).
    [8]
    8. Watch movement comprising a date display mechanism (1) according to one of claims 1 to 7, characterized in that it comprises a twenty-four hour mobile arranged to act once a day on said organ d drive (10) and cause said unit display member (4) to move by at least one step.
    [9]
    9. Timepiece comprising a timepiece movement according to claim 8.





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    同族专利:
    公开号 | 公开日
    CH715152B1|2021-09-30|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP0940833A1|1998-03-05|1999-09-08|Frédéric Piguet S.A.|Calendar mechanism for watch movement|
    EP1296204A1|2001-09-24|2003-03-26|Manufacture JAEGER-LE COULTRE|Date indicating mechanism|
    US20110158052A1|2009-12-24|2011-06-30|Shigeo Suzuki|Timepiece with calendar mechanism including first date indicator and second date indicator|
    EP2985660A1|2014-08-14|2016-02-17|Rolex Sa|Timepiece device for displaying a time or time-derived indication|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CH00840/18A|CH715152B1|2018-07-04|2018-07-04|Large date type date display mechanism.|CH00840/18A| CH715152B1|2018-07-04|2018-07-04|Large date type date display mechanism.|
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