• 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 moon phase indicating mechanism for a timepiece having a movement and a dial, the moon phase indicator mechanism comprising at least one moon disk, and at least one moon phase train (21 to 26) driven by the movement of the timepiece, the cogwheel moon phases (21 to 26) meshing with a moonphase wheel which carries at least indirectly and fixedly the moon disk, the moon phase wheel being in the form of a toothed ring (27) so as to move the moon disk through the moon phase train (21 to 26) about an axis A. The invention allows a more realistic display of moon phases, the mechanism comprising little energy and does not require activation at a predetermined time.
    公开号:CH710629A2
    申请号:CH02059/14
    申请日:2014-12-31
    公开日:2016-07-15
    发明作者:Rochat Marco；Barberat Clément
    申请人:Blancpain Sa；
    IPC主号:
    专利说明:

    Field of the invention
    The invention relates to a moon phase indicator mechanism for timepieces.
    Background of the invention
    [0002] The moon phase indicating devices have existed for a long time and comprise a moon disk on which two yellow circles symbolizing the moon are drawn on a dark background, whereas said half-moon shaped window is substantially semicircular. circular in the dial has a separate base in two concave parts, all of which is well known to those skilled in the art. When rotating this kind of moon disk under the window, the different phases of the moon are displayed. Conventionally, the moon phase mechanism is formed of a wheel driven by an hour wheel and the disk on which are affixed the two representations of the moon.
    For example, it is known from EP 2009 517 to provide a watch equipped with such a device.
    A disadvantage of such a type of watch is that the indicator mechanism is operated once a day, which does not allow a realistic display of moon phases. In addition, a conventional mechanism is complicated to integrate on a movement and can cause a component overload on the movement and thus increase the thickness of the watch case, which affects the aesthetics of the latter. Finally, such a mechanism requires that the moon phase indicator is activated at a given time, usually nineteen hours, to avoid a combination of functions at midnight and lead to too large loss of amplitude of the sprung balance.
    Summary of the invention
    The invention particularly aims to overcome the various disadvantages of these known techniques.
    More specifically, an object of the invention is to provide a moonphase display allowing a more realistic display of moon phases.
    Another object of the invention is to provide a moon phase mechanism that can consume energy and does not require activation at a predetermined time.
    The invention also aims, at least in a particular embodiment, to provide a moon phase mechanism that is simple and inexpensive to implement.
    These objectives, as well as others which will appear more clearly later, are achieved according to the invention using a moon phase indicator mechanism, for a timepiece equipped with a movement. and a dial, the moon phase indicating mechanism comprising at least one moon disk, and at least one moon phase wheel driven by the movement of the timepiece, the cogwheel moon phases meshing with a a moon phase wheel which at least indirectly and fixedly bears the moon disk, the moon phase wheel being in the form of a toothed ring so as to move the moon disk through the phase wheel of moon around an axis A.
    Thus, the object of the present invention, by its various functional and structural aspects described above, provides a relatively compact moon phase mechanism while providing a more realistic indication of the moon phase.
    According to other advantageous variants of the invention:The toothed ring has a diameter substantially identical to that of the dial and is centered on the axis A;the toothed ring is provided with a toothing arranged on the inner edge of the ring comprising one hundred and seventy-five teeth;the moon phase display device comprises a single moon disk arranged to circle the dial in a lunation cycle;the movement of the timepiece comprises at least one hour wheel, the transmission ratio between the hour wheel and the moon phase wheel is equal to 0.0169316;the moon phase display device comprising a device for correcting the position of the moon disk acting on the moon phase train;the correction device comprises a correction ring, at least one corrective mobile integral with the moon phase gear train, and a friction system arranged to separate all or part of the moon phase train from the movement during the correction of the position of the moon. moon disk.
    The invention also relates to a timepiece comprising a moon phase mechanism according to the invention.
    Brief description of the drawings
    Other features and advantages will become apparent from the description which is given below, for information only and not limiting, with reference to the accompanying drawings, in which:<tb> Fig. 1a <SEP> is a perspective view of a watch equipped with a moon phase mechanism according to the invention;<tb> fig. 1b <SEP> is an exploded view of FIG. 1a of a watch equipped with a moon phase mechanism according to the invention;<tb> figs. 2 and 3 <SEP> are respectively views from above and in perspective of a watch equipped with a moon phase mechanism according to the invention;<tb> fig. <SEP> is a detailed bottom view of the moon phase mechanism according to the invention;<tb> fig. 5 <SEP> is a partial sectional view of a watch equipped with a moon phase mechanism according to another embodiment.
    Detailed Description of the Preferred Embodiments
    A moon phase display device according to the invention will now be described in the following with reference to FIGS. 1a, 1b, 2, 3, 4 and 5.
    As illustrated in FIG. 1, the watch 1 comprises a box 10 forming a housing in which is mounted the movement 3, the box being surmounted by a window 4 closing the front face of the box 10. The watch also comprises a set forming the dial 11 centered on an axis A, the needles 12 cooperating with the dial to indicate the current time. The assembly forming the dial 11 comprises a decorative upper part visible by the wearer of the watch, and a lower part which serves to maintain and guide the axes of the moon phase train.
    The watch also comprises a mask 13 of axis A disposed above the dial 11, the mask 13 partially obscuring the dial 11.
    The watch is provided with a moon phase display device formed by an opening 14 formed in the mask 13, and at least one moon disk 15, rotatably mounted between the mask 13 and the assembly. 11. The at least one moon disk 15 is disposed on the outer diameter of the dial 11, so as to go around the dial 11 and the moon disk 15 simulates an increasing moon when it appears in the opening 14 and a waning moon as it leaves the opening 14.
    According to a first embodiment, the mask 13 may be mounted in a fixed manner and indicate the choice of moon phases in the northern hemisphere or in the southern hemisphere.
    According to another embodiment, visible in FIG. 5, the mask 13 may be movably provided and may then move from a first position in which the moon disk 15 indicates the moon phases in the northern hemisphere, to a second position in which the moon disk 15 indicates your phases. Moon in the Southern Hemisphere.
    According to a particular aspect of the invention, the moon phase mechanism comprises a single moon disk 15 which is arranged to go around the dial in a lunation cycle.
    As shown, the mask 13 is centered on the axis A and has a circular opening 14 eccentric with respect to the axis A.
    As can be seen, the moon phase mechanism is mounted on the dial side of a plate 16, between the plate 16 and the assembly forming the dial 11.
    The cogwheel moon phase 20 is driven by the movement 3 of the watch 1, and more precisely by a wheel hours, not visible in the figures. The cogwheel moon phase 20 is arranged to mesh with a moon phase wheel which at least indirectly and fixedly carries the moon disk 15.
    According to the invention, the moon phase wheel is formed by a toothed ring 27 cooperating with the moon phase wheel 20 so as to move the moon disk 15 around the axis A.
    More specifically, the moon phase wheel 20 is mounted on the plate 16, and comprises a driving wheel 21 comprising sixty teeth and carrying a pinion 22 to twenty teeth, the pinion 22 engraining a wheel 23 to forty-five teeth carrying a pinion 24 to twenty teeth between the blades 231 and 232. The pinion 24 engrains with a wheel 25 to forty-seven teeth engrainant a pinion 26 with twenty teeth cooperating with the toothed ring 27 to one hundred and seventy-five teeth receiving the disk 15. Such an arrangement allows the moon disk 15 to perform a round of the dial in 29.5306 days, which corresponds exactly to a lunation cycle.
    Thus, the transmission ratio between the hour wheel and the moon phase wheel is equal to 0.0169316. With such a cogwheel moon phase 20, the daily difference between the true moon and the moon of the mechanism is about fifty-six seconds, which corresponds to about one day's shift every one hundred and twenty-eight years, either a relatively precise mechanism.
    According to a preferred embodiment of the invention, the toothed ring 27 has a diameter substantially identical to that of the dial, centered on the axis A, so as to move the moon on the periphery of the dial 11. As shown in FIG. it can be seen in the figures, the toothed ring 27 is provided with a toothing 270 formed on the inner edge of the toothed ring 27. Of course, the skilled person has the necessary knowledge to reproduce a mechanism similar with a toothed ring 27 having a toothing on the outer edge.
    As can be seen in FIG. 5, the toothed ring 27 is mounted on an intermediate piece 50 supporting the moon disk 15, the moon disk 15 can for example be screwed by means of a screw 5 to the intermediate piece. Advantageously, the intermediate piece surrounds the dial 11 and the movement 3. Advantageously, the intermediate piece 50, visible in FIG. 1, is in the form of a ring with a protruding peripheral rim on which is secured the moon disk 15. The intermediate part 50 rests on the plate 16 and may have rollers or any other means allowing the intermediate part 50 to move in rotation while limiting the friction on the plate 16. The assembly formed by the moon disk 15, the intermediate piece 50 and the toothed ring 27 form a monobloc element once assembled together, this one-piece assembly being rotated around the dial relative to the axis A through the moon phase train 20.
    It can also be seen in FIG. 5 that the watch 1 is provided with a mask 13 movable about the axis A, the mask 13 can be moved by drive means controlled by the ring 2.
    According to the invention, the moon phase indicator mechanism is provided with a device for correcting the position of the moon disk arranged to act on the moon phase train 20. The correction device comprises a ring of correction 2 arranged to cooperate by meshing with at least one corrective mobile integral with the moonphase gear train 20, and a friction system arranged to separate all or part of the moonphase gear train 20 during the correction of the position of the moon disk.
    As illustrated in FIG. 4, the correction device comprises a correction pinion 40 arranged to mesh at least indirectly with the ring 2 when it is positioned in the correction position. The correction pinion 40 meshes with a correction gear wheel 41 meshing with an intermediate gear wheel 42 secured to the toothed wheel 25 of the moon phase gear train 20.
    As can be seen in Figs. 2 to 4, the friction system comprises a friction wheel formed by the toothed wheel 23 of the moon phase train 20. When the correction device is engaged, the pinion 24 supported by the friction wheel 23 rotates between the blades 231. and 232 without rotating the friction wheel 23.
    The invention also relates to a timepiece equipped with such moon phase indicator mechanism according to the invention.
    Of course, the present invention is not limited to the example shown but is susceptible to various variations and modifications that will occur to those skilled in the art.
    NOMENCLATURE
    [0035]<Tb> 1. <September> Watch,<Tb> 10. <September> box,<Tb> 11 <September> Dial,<Tb> 12. <September> Needles,<Tb> 13 <September> Mask<Tb> 14 <September> Opening,<tb> 15. <SEP> Moon disk,<Tb> 16 <September> Platinum<Tb> 2 <September> Crown<Tb> 3 <September> Movement<Tb> 4 <September> Ice<tb> 5. <SEP> Intermediate part<Tb> 50 <September> Screws,<tb> 20. <SEP> Driving moon phases,<tb> 21. <SEP> Driving wheel,<Tb> 22 <September> Pignon<tb> 23. <SEP> Friction wheel.<tb> 231, 232. <SEP> Blades,<Tb> 24 <September> Pignon<Tb> 25 <September> Wheels,<Tb> 26 <September> Pignon<tb> 27. <SEP> Toothed ring,<Tb> 270 <September> Teeth,<tb> 40. <SEP> Correction gear,<tb> 41. <SEP> Correction wheel,<tb> 42. <SEP> Intermediate wheel,<Tb> A <September> Axis.
    权利要求:
    Claims (8)
    [1]
    Moon phase indicator mechanism, for a timepiece equipped with a movement (3) and a dial (11), the moon phase indicator mechanism comprising at least one moon disk (15), and at least one moon phase wheel (20) driven by the movement (3) of the timepiece, the moon phase wheel (20) meshing with a moon phase wheel which carries at least indirectly and fixed manner the moon disk (15), the tune phase wheel being in the form of a toothed ring (27) so as to move the moon disk (15) through the gear train (20) of phases of moon around an axis A.
    [2]
    2. moon phase mechanism according to claim 1, wherein the toothed ring (27) has a substantially identical diameter to that of the dial (11), centered on the axis A.
    [3]
    A moon phase display device according to claim 1 or 2, wherein the toothed ring (27) is provided with a toothing (270) provided on the inner edge of the toothed ring (27) comprising one hundred seventy-five teeth.
    [4]
    4. Moon phase display device according to any one of claims 1 to 3, comprising a single moon disk (15) arranged to go around the dial (11) in a lunation cycle.
    [5]
    Moon phase display device according to any one of claims 1 to 4, wherein the movement (3) of the timepiece comprises at least one hour wheel, the transmission ratio between the wheel of the hours and the moon phase wheel equals 0.0169316.
    [6]
    A moon phase display device according to any one of claims 1 to 5, comprising a moon disk position correction device (15) acting on the moon phase wheel (20).
    [7]
    7. Moon phase display device according to claim 6, wherein the correction device comprises a correction ring (2), at least one correction mobile integral moon phase gear (20), and a system to friction arranged to separate all or part of the moon phase gear train (20) from the movement (3) when correcting the position of the moon disk (15).
    [8]
    8. Timepiece comprising a display device according to any one of claims 1 to 7.
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    同族专利:
    公开号 | 公开日
    CH710629B1|2021-07-30|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    RU2688040C1|2017-03-20|2019-05-17|Бланпэн Са|Moon phase display device|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CH02059/14A|CH710629B1|2014-12-31|2014-12-31|Moon phase indicator mechanism for a timepiece.|CH02059/14A| CH710629B1|2014-12-31|2014-12-31|Moon phase indicator mechanism for a timepiece.|
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