• 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 timepiece according to the invention comprises means for indicating the sunrise and sunset taking into account seasonal variations. These means include a sphere reproducing the globe, a circle arranged concentrically to the sphere and arranged to delimit a part of the terrestrial globe where it is dark of another part where it is daylight indicating the position of the terrestrial terminator. Preferably, the circle forms the rim of a shell that can pivot about the globe along two axes perpendicular to each other. The hull is driven by the movement so as to rotate at the rate of one turn per 24 hours around a first polar axis. A differential mechanism (50) is controlled by an annual cam (72) having a profile representative of the inclination of the Sun relative to the equatorial plane. The differential mechanism controls the inclination of the shell around the second axis via a drive shaft (35) concentric with the polar axis.
    公开号:CH709947A2
    申请号:CH01124/14
    申请日:2014-07-23
    公开日:2016-01-29
    发明作者:Beat Gilomen；Michel Willemin；Dominique Léchot
    申请人:Swatch Group Res & Dev Ltd；
    IPC主号:
    专利说明:

    Field of the invention
    The present invention relates to a timepiece comprising a watch movement and means for indicating the sunrise and sunset taking into account seasonal variations, said means comprising a sphere reproducing the globe, a support, and a circle mounted on the support and arranged concentrically with the sphere, the circle being arranged to indicate the position of the terrestrial terminator, the circle and the sphere being arranged to be able to pivot relative to each other along two perpendicular axes, a first of the two axes corresponding to the polar axis of the terrestrial globe, and the second axis crossing the first axis in the center of the sphere, the circle being free to pivot relative to the support about the second axis, the means of indicating the rising and falling sunset also comprising an annual cam having a profile representative of the inclination of the Sun relative to the equatorial plane and arranged e to be rotated by the movement at a rate of one revolution per year, a cam follower arranged to cooperate with the cam, and a kinematic link arranged to connect the cam follower to the circle so that the plane under -tended by the circle makes with the first axis an angle equal to the angle of inclination of the Sun with respect to the equatorial plane.
    Prior art
    The duration of the day is the time included, each day between the moment when the upper limb of the Sun appears to the east above the horizon, at sunrise, until its disappearance to the west below the horizon, at sunset. Whatever the time, there is always half of the surface of the globe which is illuminated by the Sun, and another half which is in the shadow. The term terrestrial terminator is the line of demarcation between the part of the Earth which is illuminated and that which is in the shadow. Geometrically speaking, the terrestrial terminator is a large circle that surrounds the globe. This large circle extends in a plane perpendicular to the plane of the earth's orbit around the sun (called the plane of the ecliptic). We can still note that the center of the Earth is on the line of intersection between these two planes.
    [0003] In general, the duration of the day varies throughout the year and depends on the latitude. This variation is caused by the inclination of the axis of rotation of the Earth on itself with respect to the plane of the ecliptic. This inclination corresponds by definition to the latitude of the tropics which is ± 23 ° 27. As is well known, the duration of the day is shortest during the December solstice in the northern hemisphere, and June in the southern hemisphere. At the equinoxes, the duration of the day is equal to that of the night on the whole Earth.
    We already know timepieces corresponding to the definition given in the preamble above. Fig. 3 of the German utility model DE 7 014 354 (U), in particular, describes a table clock comprising a sphere which reproduces the globe and which is mounted on a vertical axis to turn over a support in the form of a housing. The upper face of the support has an annular dial arranged concentrically to the axis of the sphere and showing a 24 hour turn. A watch movement housed in the holder is intended to rotate the globe over the dial at the rate of one turn per 24 hours. This known table clock still has a hemispherical shell slightly larger than the globe and mounted concentrically to the latter so as to surround it and reveal only half of it. The hemispherical hull is intended to allow to distinguish, on the terrestrial globe, a half-sphere lit by sun of another which is in the shade. The hemispherical hull is further articulated on two vertical uprights on both sides of the Earth. It can thus pivot about a horizontal axis that crosses the vertical axis that carries the globe in the center of the latter. The hull is further provided with a rack arranged to cooperate with a pinion forming part of a mechanism designed to control the angle of inclination of the hull so as to traverse at this angle, once a year in one direction then in the other, the entire range between values - and + 23.5 °, to reproduce the effect of the variation of the sun's inclination over the equator according to the seasons.
    It will be understood that the table clock described in the aforementioned prior document reproduces the succession of days and nights on the Earth from a point of view that could be described as Copernican. Indeed, with this previous construction, it is the Earth that turns on itself, while the shadow of the Sun only changes inclination according to the seasons. Although perhaps less scientifically correct, the geocentric representation that we find ourselves in the center, while the Sun revolves around us, is much more in keeping with our intuition.
    Brief description of the invention
    An object of the present invention is to provide a timepiece to reproduce the succession of days and nights on Earth according to a geocentric point of view. It achieves this goal by providing a timepiece according to the appended claim 1.
    It will be understood that, according to the invention, the circle of the terrestrial terminator rotates with its support at a rate of one turn per 24 hours around the polar axis of the earth. In addition, the circle is pivotally mounted on the rotating support, so that it can also change inclination relative to the polar axis. The angle of inclination of the circle is controlled by a drive shaft arranged concentrically with the rotating support. The drive shaft is actuated by the motion to rotate at the same speed as the carrier, but with a certain phase shift. It is the value of the phase shift which determines the inclination of the circle with respect to the polar axis.
    [0008] It will be understood that in the present context, the expression "circle" does not necessarily mean a completely complete circle. It may just as well be a circle that has at least one cut. Indeed, according to the invention, the axis around which the circle is pivotally mounted perpendicularly cuts the polar axis of the earth. However, according to an advantageous embodiment of the invention, the terrestrial globe is mounted on a rod which extends concentrically to the polar axis. Under these conditions, it is necessary that the circle has at least one interruption to allow the rod and the circle to cross when the inclination of the circle relative to the polar axis goes through zero. In addition, according to a preferred variant of this last embodiment, the rod which carries the sphere is a through rod pivoted by its two ends. As will be seen further, the circle must then have two cuts disposed opposite one another, on the same diameter perpendicular to the pivot axis of the circle.
    According to the invention, a differential mechanism makes it possible to modify the phase shift between the drive shaft and the rotating support. The differential mechanism has a first and a second input, as well as an output. The first input of the differential mechanism is arranged to be rotated by the movement, and the output of the mechanism is connected to the drive shaft. The second input of the differential mechanism is kinematically connected to the cam follower, so that the variations in the profile of the annual cam are reflected by corresponding variations in the phase shift of the drive shaft.
    According to a preferred embodiment of the invention, the timepiece is a watch that includes a dial, the polar axis X-X being oriented parallel to the plane of the dial. This characteristic is original. Indeed, known timepieces that include means for indicating the sunrise and sunset taking into account seasonal variations, are generally table clocks. In these clocks, the polar axis X-X is normally arranged vertically. Although this arrangement is satisfactory with a table clock, it is not very suitable for a timepiece such as a watch in which the display is visible only on one side through the watch glass. Indeed, the sphere that reproduces the globe must be large enough to be easy to locate, at least approximately, anywhere on the planet. However, the small space between the dial and the glass requires that the globe used has a small footprint. To allow the use of a globe of a certain size with the polar axis oriented vertically, the only solution is to arrange in the dial a well-shaped opening to receive the sphere. Such an arrangement, however, limits the visibility, since the hemisphere at the bottom is then completely invisible to the wearer of the watch. This is the reason why, when the timepiece is a watch comprising a dial, the polar axis X-X is preferably oriented parallel to the plane of the dial.
    Brief description of the figures
    Other features and advantages of the present invention will appear on reading the following description, given solely by way of non-limiting example, and with reference to the accompanying drawings in which:<tb> fig. 1 <SEP> is a plan view from above of a wristwatch according to a particular embodiment of the invention;<tb> fig. 2 <SEP> is a schematic sectional view of the wristwatch of FIG. 1;<tb> figs. 3A, 3B and 3C <SEP> are partial views of a particular embodiment of the means for indicating the sunrise and sunset of the invention. The three partial views show the sphere that reproduces the globe, the support, and a shell that is pivotally mounted on the support and is arranged concentrically to the sphere. The support is from the front in fig. 3A, in profile in FIG. 3B and three-quarters in fig. 3C;<tb> fig. 4 <SEP> is a partial cross-sectional view of the sunrise and sunset indication means of FIGS. 3A, 3B and 3C; the support being represented from the front as in FIG. 3A;<tb> fig. <SEP> is a perspective view of a particular embodiment of sunrise and sunset indication means taking into account seasonal variations according to the invention. Fig. 5 shows in particular the kinematic connection connecting the cam follower to the circle.
    Detailed description of embodiments
    The watch illustrated in FIGS. 1 and 2 includes a main dial designated by the general reference numeral 1. The main dial carries three small dials (referenced 7, 9 and 15) to provide the wearer of the watch various information. This is firstly the time indicated by two needles 3 and 5, respectively minutes and hours, which are arranged to rotate conventionally next to the first small dial 7. The illustrated watch also includes a calendar whose display uses the other two small dials 9, 15. This calendar will not be described in detail since it is not the subject of the invention. Suffice to say that the display of the date (from 1 to 31) (or date) is provided by a small needle 13 arranged to rotate above the small dial 15, and another small needle 11 is arranged to provide a indication of the month of the year in cooperation with the third small dial 9.
    According to the invention, the watch shown also comprises means for indicating the sunrise and sunset in different parts of the Earth while taking into account seasonal variations. As such, the watch of Figs. 1 and 2 further comprises a sphere 17 which represents the terrestrial globe. It can be seen that the sphere 17 is mounted on a through rod 19 which is arranged concentrically with the polar axis X-X of the terrestrial globe. In the illustrated embodiment, the rod 19 is oriented parallel to the plane of the dial, and its two ends are engaged in two bearings (not referenced) that carries the frame so as to allow the sphere to rotate about the polar axis X -X. It can also be seen that the sphere is housed in a well 21 arranged at 12 o'clock in the dial 1. In addition, the polar axis X-X of the globe is superimposed on the diameter 12 hours - 6 hours of the watch. Conventionally, the north pole of the globe is oriented upwards (in the direction of 12 hours).
    According to the invention, the means for indicating the sunrise and sunset in different parts of the Earth further comprise a circle 23 mounted on a support 25 and arranged concentrically with the sphere 17. In the embodiment shown it can be seen that the means for indicating the sunrise and sunset include, as a circle, a shell 27 of hemispherical shape which is arranged concentrically with the sphere 17 so as to mask half of the globe. It will be understood that according to this particular embodiment, the hemispherical shell 27 has a substantially circular flange, and that this rim constitutes the circle 23 according to the invention. It is therefore the position of the circular rim of the shell 27 which indicates the position of the terrestrial terminator. One advantage of using a half-sphere shell instead of a simple ring is that it makes it possible to clearly distinguish a part of the terrestrial globe where it is dark from another where it is daytime. The shell 27 may for example be made of a translucent or transparent material which is preferably slightly tinted, so as to give the impression that the part of the globe covered by the shell is immersed in the night. According to another variant not shown, the shell could have the shape of a sphere formed by the meeting of two half-spheres having different hues, one being the day and the other at night. The half-sphere of the day would then preferably be more transparent than the other, so as to show the surface of the globe. It will be understood that according to this latter variant, the two half-spheres form between them a substantially circular seal, and that this seal constitutes the circle according to the invention. Another advantage of this last variant is that it gives the possibility to represent the Sun in the middle of the half-sphere of the day. Thus, this variant can provide a watch that indicates when the Sun is at the Zenith.
    Figs. 3A, 3B, 3C and 4 are more detailed views of the assembly formed by the sphere 17, the support 25 and the shell 27. The three views 3A, 3B and 3C show respectively the shell and the support turned from the front, from profile and three-quarters. Fig. 4 illustrates the same assembly in cross section and seen from the front as in FIG. 3A. Referring always to FIG. 3A, it can be seen that the support 25 has the general shape of a fork with a short trunk which carries two branches 33a and 33b which extend symmetrically on either side of the sphere. In the variant shown, the support 25 has an axis of symmetry which coincides with the polar axis X-X of the terrestrial globe. Referring now to the enlarged sectional view of FIG. 4, it can be seen that the trunk of the support is constituted by a first barrel wheel (referenced 31) inside which a second barrel wheel 35 and the rod 19 pass. In the embodiment illustrated, the second gun wheel is interposed between the rod 19 and the first gun wheel 31. However, it will be understood that, alternatively, it could be the first gun wheel that would be placed inside the second gun wheel. It will be understood moreover that in both variants, the two gun wheels 31, 35 and the rod 19 are free to rotate independently of each other.
    Can still be seen in the figures that the shell 27 is pivotally mounted between the two branches 33a, 33b by means of two joints referenced 37a and 37b and which are arranged coaxially in the extension of one another. The shell can therefore pivot on the support 25 along an axis of rotation that passes through the two joints. This pivot axis, which crosses the polar axis X-X in the center of the sphere 17, will be called hereinafter the ecliptic axis and referenced Y-Y. Each of the two joints 37a, 37b is constituted by a pivot carried by the rim of the shell 27 and which is inserted in a bearing fixed at the end of one of the branches 33a, 33b. It will also be noted that the pivots which are inserted in the two bearings occupy diametrically opposite positions on the large circle 23 constituted by the edge of the shell.
    Referring again to FIGS. 3A and 4, it can be seen that a chain 41 connects the second barrel wheel 35 to the articulation 37a. More specifically, the chain 41 is stretched between a circular groove that the gun wheel 35 and a pinion (referenced 39) that the hinge 37a. The pinion 39 is fixed on the end of the pivot integral with the shell 27. It will be understood that in the illustrated embodiment, the cannon wheel 35 constitutes the drive shaft according to the invention, and that the circular groove, the chain 41 and the pinion 39 together form the transmission means arranged to connect the drive shaft to the circle 23. In accordance with the arrangement just described, any rotation of the cannon wheel 35 relative to the support 25 is transmitted to the pinion 39 by the chain 41. Thus, any rotation of the barrel wheel 35 relative to the support 25 causes a corresponding pivoting of the shell 27 around the ecliptic axis Y-Y. It will be understood that the mechanism which has just been described makes it possible to completely traverse, in one direction and then in the other, the range of values between + and -23.5 °, at the angle of inclination of the hull. 27 relative to the polar axis X-X. It will be understood that, thanks to this construction, the means of indicating the sunrise and sunset are capable of taking into account the effect of the variation of the inclination of the Sun over the equator according to the seasons. . Referring more particularly to FIGS. 3C and 4, it is observed that the lip 23 of the shell also has two notches 43a and 43b arranged in diametrically opposite positions, midway between the joints 37a and 37b. It will be understood that the function of the notches 43a and 43b is to allow the passage of the rod 19 when the shell 27 is inclined relative to the polar axis X-X.
    We have seen that, in accordance with the invention, the support 25 is arranged to be driven by the movement so as to rotate at the rate of one turn per 24 hours around the first axis X-X. In addition, a drive shaft coaxial with the polar axis X-X is arranged to be rotated by the motion through a differential mechanism at the same speed as the carrier 25, but with an angular offset. relative to the support. It will be understood that, in the illustrated embodiment, the drive shaft is constituted by the barrel wheel 35, and that the movement rotates the support 25 via the toothing of the barrel wheel 31.
    FIG. 5 is a perspective view of a particular embodiment of the means for indicating the sunrise and sunset of the invention. We can see in particular in fig. A differential mechanism generally referenced 50. In the embodiment shown, the differential 50 is constituted by a planetary gear train which comprises a mobile of first input formed of a wheel 51 and a pinion 53, a mobile second input device comprising a satellite carrier 55 integral with a cam follower bridge 58, a satellite mobile pivoted between the planet carrier and the cam follower bridge and formed of a concentric gear wheel 60 and wheel 62 , and finally, an output mobile formed by a wheel 64 and a pinion 66.
    FIG. 5 still shows the hour wheel of the movement (referenced 68) and an intermediate wheel 70 connecting the hour wheel to the first input of the differential mechanism 50. One can still see an annual cam 72 and a probe 74 carried by the follower bridge cam 58 which constitutes the second input of the differential mechanism. Note that the sensor is biased against the cam 72 by a spring not shown. Two referrals 76 and 78 are further interposed between the output of the differential and the impeller 35.
    The operation of the differential mechanism illustrated in FIG. 5 will now be explained. The hour wheel 68 is conventionally driven one turn every 12 hours. The hour wheel meshes with the intermediate wheel 70 which in turn drives the wheel 51 of the first differential input. In the illustrated embodiment, the gear ratios are such that the wheel 51 performs one revolution in 24 hours.
    It has also been seen that the wheel 51 forms, with the pinion 53, the input mobile of the differential 50. It will therefore be understood that the pinion 53 also rotates at the speed of one revolution per 24 hours. The pinion 53 meshes with the pinion 60 of the satellite mobile. Thus, the satellite mobile is rotated on itself. The wheel 62 of the mobile satellite engages in turn with the pinion 66 of the differential output mobile (formed of the pinion 66 and the wheel 64), so that the mobile output is rotated. In the illustrated embodiment, the gear ratios are such that the output mobile rotates at the same speed as the mobile of the first input (formed by the wheel 51 and pinion 53), as long as the second input not actuated.
    Referring again to FIG. 5, we see that three references 80, 82 and 84 connect the wheel 51 to the gun wheel 31 of the support 25. It will therefore be understood that the gun wheel 31 and the support 25 are also driven from the wheel hours to because of a turn every 24 hours. Note that the direction of rotation of the support 25, and therefore also of the shell 27, is chosen to reproduce the apparent movement of the Sun rotating around the Earth. Under these conditions, the terrestrial terminator moves from East to West on the globe.
    According to the invention, the annual cam 72 is arranged to be rotated by the movement of the timepiece at the rate of one revolution per year, and its profile is representative of the variation, in the course of time. year, the inclination of the Sun relative to the Earth's equatorial plane. It has also been seen that the cam follower bridge 58 is integral with the planet carrier 55 and forms with it the second differential input 50. In addition, the cam follower bridge carries a probe 74 arranged to cooperate with the annual cam 72. It will thus be understood that the cam follower and the planet carrier 55 are arranged to pivot concentrically to the differential in response to any variation in the profile of the annual cam. When the carrier pivots, the pinion 60 of the satellite mobile rolls on the toothing of the pinion 53 of the mobile of the first input of the differential. Thus, in a manner known per se, the pivoting of the planet carrier 55 is transmitted to the pinion 70 of the mobile exit via the wheel 62 of the satellite mobile. Any pivoting of the planet carrier 55 therefore has the effect of briefly modifying the speed of rotation of the differential output wheel. The speed of the mobile output is modulated by the variations in the profile of the annual cam 72.
    We have seen that, in the illustrated embodiment, the mobile output of the differential (formed by the pinion 66 and the wheel 64) rotates at the same speed as the first entry mobile 51, 53, as long as the planet carrier 55 remains stationary. It will therefore be understood that the wheel 64 of the differential output mobile is driven by the movement at a speed of one turn every 24 hours, and that the phase difference between the wheel 64 and the mobile of the first input of the differential is determined by the angular position of the cam follower bridge 58. As further shown in FIG. 5, the differential output wheel 64 is arranged to drive the barrel wheel 35 via the jacks 76 and 78, while the wheel 51 of the first differential input gearset is arranged to drive the barrel wheel 31 of the 25 by means of three references 80, 82 and 84. It will therefore be understood that the phase difference between the gun wheel 35 and support 25 is determined by the profile of the annual cam 72. As can be seen in FIG. . 5, the return 84 and the first barrel wheel 31 are perpendicular to each other, and the barrel 78 and the second barrel wheel 35 are also perpendicular to each other. It is therefore possible to provide conical gears to allow these wheels to cooperate.
    We have seen that the barrel wheel 35 is arranged to control the inclination of the shell 27 by means of a chain 41 which connects the barrel wheel 35 to a pinion 39 integral with one of the two pivots. by which the hull is held. As long as the barrel wheel 35 rotates at the same speed as the support 25, its rotational speed relative to the support is zero. The chain 41 being carried by the support, it will be understood that it is not actuated as long as the cannon wheel 35 is stationary relative to the support. Conversely, each time the annual cam 72 rotates the planet carrier 55, this pivoting causes rotation of the barrel wheel 35 relative to the support 25. This rotation is transmitted to the chain 41 and to the pinion 39, so that the annual cam rotates the shell 27 relative to the polar axis X-X.
    We have seen above that in the embodiment illustrated by FIGS. 1 and 2, the sphere 17 of the globe is housed in a well 21 arranged in the dial so that only half of the globe is visible at a given moment. We have also seen that the sphere 17 is mounted on a central rod 19 which is arranged coaxially with the polar axis X-X. The rod is further oriented parallel to the dial 1 and both ends are engaged in bearings so that the globe can turn on itself to change the visible side dial.
    For it to be possible to indicate the rise and the setting of the Sun in any point of the globe, it is necessary that each point of the globe has the possibility of being visible above the dial of the watch. It will be understood that, for that, it is necessary that the sphere appearing the terrestrial globe can turn. It is therefore useful to provide that the watch comprises a manual control member operable by the wearer of the watch to rotate the globe. In addition, according to an advantageous variant, the watch glass may have a small line superimposed on the polar axis X-X. The presence of this line on the glass makes it easier to fine tune the orientation of the globe. From the information that has just been given, the skilled person will have no difficulty in producing a manually controlled mechanism for adjusting the orientation of the sphere 17.
    It will be understood that various modifications and / or improvements obvious to a person skilled in the art can be made to the embodiment which is the subject of the present description without departing from the scope of the present invention defined by the appended claims. In particular, the first input of the differential 50 does not need to be driven by the movement at the speed of one turn in 24 hours. Similarly, the output of the differential 50 does not need to rotate at the same speed as the drive shaft 35. Reducing gears or multipliers may very well be provided between the various elements of the drive train to adapt the speeds of rotation.
    权利要求:
    Claims (11)
    [1]
    1. Timepiece comprising a watch movement and means for indicating the sunrise and sunset taking into account seasonal variations, said means comprising a sphere (17) reproducing the globe, a support (25), and a circle (23) mounted on the support and arranged concentrically with the sphere, the circle being arranged to indicate the position of the terrestrial terminator, the circle (23) and the sphere (17) being arranged to be able to pivot relative to the another along two perpendicular axes (X-X, Y-Y), a first of the two axes, called the polar axis (X-X), corresponding to the polar axis of the terrestrial globe, and the second axis, called the ecliptic axis ( Y-Y), crossing the polar axis in the center of the sphere (17), the circle (23) being free to pivot relative to the support (25) around the ecliptic axis, the means for indicating the rising and falling sunset also comprising an annual cam (72) having a rep profile resentative of the inclination of the sun relative to the equatorial plane and arranged to be rotated by the movement at the rate of one revolution per year, a cam follower (74) arranged to cooperate with the cam, and an arranged kinematic link to connect the cam follower to the circle so that the plane subtended by the circle makes an angle with the polar axis (X-X) equal to the angle of inclination of the Sun relative to the equatorial plane; characterized in that- the support (25) is arranged to be driven by the movement so as to rotate at the rate of one turn per 24 hours around the polar axis (X-X) by driving the circle (23);The means for indicating the sunrise and sunset include a differential mechanism (50), and a drive shaft (35) concentric to the polar axis (X-X) and connected to the output of the differential mechanism of to be rotated by the movement through a first input of the differential mechanism at the same speed as the carrier (25), but with an angular offset relative to the carrier;The cam follower (74) is connected to a second input of the differential mechanism (50) so that the angular offset of the drive shaft is representative of the inclination of the sun with respect to the equatorial plane; transmission means (39; 41) being further arranged between the drive shaft (35) and the circle (23), so that a change in the angular offset results in a corresponding change in the value of the angle between the plane subtended by the circle and the polar axis (X-X).
    [2]
    2. Timepiece comprising means for indicating the sunrise and sunset according to claim 1, characterized in that it comprises a dial (1), the polar axis (X-X) being substantially oriented parallel to the plane of the dial.
    [3]
    3. Timepiece comprising sunrise and sunset indication means according to claim 1 or 2, characterized in that the timepiece is a watch.
    [4]
    4. Timepiece comprising means for indicating the sunrise and sunset according to one of claims 1, 2 and 3, characterized in that the means of indicating the sunrise and sunset taking into account seasonal variations comprise a hull (27) arranged concentrically with the sphere (17) reproducing the terrestrial globe, the hull being arranged to delimit a part of the terrestrial globe where it is nighttime of another part where it is daylight, and in that that the shell (27) has the general shape of a hemisphere and has a rim of generally circular shape, the flange constituting the circle (23) arranged to indicate the position of the terrestrial terminator.
    [5]
    5. Timepiece comprising means for indicating the sunrise and sunset of claim 4, characterized in that the ecliptic axis (Y-Y) and substantially collinear with a diameter of the circle (23), and in that the shell (27) carries two pivots extending the two ends of the diameter, the two pivots being respectively pivoted on a first and a second arm (33a, 33b) of the support (25).
    [6]
    6. Timepiece comprising means for indicating the sunrise and sunset according to claim 5, characterized in that the rim (23) of the shell (27) has two notches (43a, 43b) arranged in diametrically opposed positions halfway between the two pivots.
    [7]
    7. Timepiece comprising means for indicating the sunrise and sunset according to one of the preceding claims, characterized in that it comprises a calendar mechanism arranged to indicate the date (13) and the month (11), and in that the annual cam (72) is kinematically connected to the calendar mechanism.
    [8]
    8. Timepiece comprising means for indicating the sunrise and sunset according to one of the preceding claims, characterized in that the circle (23) is kinematically connected to the drive shaft (35). by a belt (41) or a chain.
    [9]
    Timepiece comprising means for indicating the sunrise and sunset according to one of the preceding claims, characterized in that the kinematic connection passes through the second input of the differential mechanism (50), which comprises a carrier (55) integral with the cam follower (74).
    [10]
    Timepiece comprising means for indicating the sunrise and sunset according to claim 5, characterized in that the first and second arms (33a, 33b) of the support (25) are perforated so as to increase the share of the Earth's surface area visible at a given moment.
    [11]
    11. Timepiece comprising means for indicating the sunrise and sunset of claim 5, characterized in that the first and second arms (33a, 33b) of the support (25) are made of a material transparent so as to increase the share of the surface of the terrestrial globe visible at a given moment.
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    同族专利:
    公开号 | 公开日
    CH709947B1|2018-09-14|
    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
    CH01124/14A|CH709947B1|2014-07-23|2014-07-23|Timepiece indicating the sunrise and sunset of the globe.|CH01124/14A| CH709947B1|2014-07-23|2014-07-23|Timepiece indicating the sunrise and sunset of the globe.|
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