Devices for displaying and indexing time- or time-derived indications

Abstract

To provide a device for displaying an indication of the time or derived from the time which has a small overall size.SOLUTION: A device for display of an indication of the time or derived from the time includes: a first display mobile unit 10 including a first toothing, a second toothing and a first disk 12 carrying digits 13 intended to indicate the units place of the indication; a second display mobile unit 20 including a third toothing, a fourth toothing and a second disk 22 carrying digits 23 intended to indicate the tens place of the indication; and a mechanism 90 for driving the first and second mobile units, which includes a first command mobile unit 30 including a fifth toothing 30a adapted to cooperate by obstacles, in particular by meshing, with the first and third toothings, and a second command mobile unit 40 including a sixth toothing 40a adapted to cooperate by obstacles, in particular by meshing, with the second and fourth toothings.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The invention relates to a display for showing an indication of time or of a time-derived indication. The invention also relates to a jumper or indexing device. The invention also relates to a clock movement comprising such a display device and / or such a jumper or indexing device. The invention further relates to a clock comprising such a display device and / or such a jumper or indexing device or such a clock movement. The invention finally relates to a method for operating such a display device or such a clock movement or such a clock. [Background technology]

[0002] Prior art "grande date" mechanisms systematically employ 31-tooth command gears or discs, or command gears or discs that achieve a full rotation in 31 steps, which makes the incorporation of such mechanisms into a watch movement difficult due to their bulkiness. Furthermore, the sequencing of the command devices that drive the tens and units discs is often complex, limiting the flexibility of options for positioning each mobile unit in a plane.

[0003] All the solutions identified employ either a 31-tooth command mobile unit or a disc. For example, US Pat. No. 5,623,999 and US Pat. No. 5,623,999 disclose two main drive concepts for what is now known as the "Grande Date" mechanism.

[0004] Patent Document 1 discloses an arrangement of a first command mobile unit that drives a first display mobile unit for the ones digit and a second display mobile unit for the tens digit. The two display mobile units are arranged side by side. The command mobile advances one step every 24 hours and completes a full rotation in 31 steps. The command mobile includes three tooth rows distributed at three different heights. The first tooth row is provided for driving itself, the second tooth row with 30 teeth is provided for driving the ones digit display mobile unit, and the third tooth row with four teeth is provided for driving the tens digit display mobile unit. The arrangement at three different heights and the use of a command mobile unit that sequences jumps over 31 steps make the solution particularly bulky and difficult to incorporate into a watch movement.

[0005] Patent Document 2 discloses the use of a command disk that advances one step every 24 hours to drive a first display mobile unit for the ones digit and a second display mobile unit for the tens digit. These two display mobile units are arranged side by side. The command disk includes two rows of teeth arranged at two different heights. The first row of teeth includes 31 teeth, 30 of which function to drive the ones digit display mobile unit. The second row of teeth includes 31 teeth, 4 of which function to drive the tens digit mobile unit. The overall dimensions of this type of disk in the plane are very large. This is similar to a date disk, which offers virtually no freedom in the placement of the two display mobile units within a watch movement. Furthermore, the use of a disk that sequences jumps over 31 steps makes the implementation of this solution into a watch movement particularly difficult.

[0006] As mentioned above, a "grande date" mechanism typically includes two display mobiles for displaying the date, the first displaying the ones digit and the second displaying the tens digit. Each of these two display mobiles requires an angular position indexing device that allows indexing of the ones digit and the tens digit, respectively, within the window. "Indexing" a mobile preferably means maintaining the mobile at a specific angular position from a finite number of angular positions of the mobile, the positions being separated from each other by an angle, in particular a fixed angle.

[0007] The problem with this type of "grande date" mechanism is that the movement's energy consumption when changing the date depends specifically on the date being changed. In fact, depending on the order of the date display mechanism, it may be necessary to drive more than one "grande date" display mobile. With conventional mobile indexing devices, the movement must overcome one or two jumpers or levers simultaneously, each of which constitutes a separate indexing device, resulting in energy consumption that tends to vary depending on the date being changed. When the movement must overcome two jumpers or levers, less energy is available to the regulating unit, potentially resulting in a loss of amplitude at the same regulating unit height. These amplitude changes must be minimized as much as possible to achieve the most optimized chronometric performance.

[0008] The various prior art documents identified do not offer any solution for employing two levers, which is incompatible with the "grande date" mechanism, and / or for having equal or substantially equal energy consumption whether one or multiple indexing levers are actuated.

[0009] Patent Document 3 discloses a calendar including a date indicator and a day of the week indicator. These mobile indexing devices include a lever with two beaks fixed relative to each other for positioning the two indicators, an elastic return element, and an eccentric fixed to the lever. The eccentric allows adjustment of the relative position of the two beaks, and thus the angular indexing position of the two indicators. This solution cannot be adopted for indexing a "grande date" mechanism, since a degree of freedom between the two beaks is required so that they can function independently of each other.

[0010] Patent Document 4 discloses a calendar including a mobile indexing device for positioning a date indicator and a day indicator, which includes a single lever with two beaks and two elastic return elements. To provide this indexing device with an additional degree of freedom, the lever further includes a slot adapted to cooperate with a pin fixed to the movement frame, forming a sliding connection. Although the beak is fixed only to a single lever, this additional degree of freedom allows the indicators to function independently of each other. Indeed, thanks to this sliding connection, when only one of the two indicators is activated, for example, during a first operation to adjust the calendar, the beak cooperating with the other indicator is maintained within the indicator's teeth and serves as a pivot for the lever. In this case, only one of the two elastic return elements is loaded. The same applies when the other indicator is activated, for example, during a second operation to adjust the calendar. On the other hand, when the two indicators are simultaneously activated during conventional operation of the calendar, the lever pivots around the pin, and both elastic return elements are loaded. The indexing device does not provide any solution that allows the activation of the same return element when two indicators are activated simultaneously. Furthermore, the indexing device does not make it possible to obtain equal or substantially equal energy consumption whatever the number of indicator mobiles that are activated.

[0011] Patent document 5 discloses a calendar including a mobile indexing device that includes a lever with two beaks that can be operated independently of each other. The mobile indexing device is described as including at least one beak intended to index the date indicator or the day indicator, and an elastic part oriented in two directions that allows the device to return elastically. In this type of device, the installation of the elastic part of the mobile indexing device, and therefore the energy consumption, depends on the number of beaks that are activated. For this reason, this solution is not an optimal solution. [Prior art documents] [Patent documents]

[0012] [Patent Document 1] Swiss Patent Application Publication No. 310559 [Patent Document 2] International Publication No. 9850829 [Patent Document 3] Swiss Patent Application Publication No. 986270 [Patent Document 4] U.S. Patent No. 4,048,795 [Patent Document 5] French Patent Application Publication No. 2120056 Summary of the Invention [Problem to be solved by the invention]

[0013] In a first aspect, the object of the present invention is to provide an apparatus for displaying time or time-derived indications, which makes it possible to remedy the above-mentioned drawbacks and to improve upon known prior art devices. In particular, the present invention proposes an apparatus for displaying time or time-derived indications, which offers great flexibility or adaptability in the arrangement of the display mechanism, makes it possible to obtain a structure with very small overall dimensions in a plane, and provides a very robust operation.

[0014] In a second aspect, the object of the present invention is to provide a jumper or position indexing device that makes it possible to remedy the above-mentioned drawbacks and improve upon known prior art devices. In particular, the present invention proposes a jumper or position indexing device that has a simple structure and makes it possible to use two levers that function independently of each other, and that further makes it possible to obtain equal or substantially equal return forces on the elastic return elements whatever the number of levers or beaks that are actuated. [Means for solving the problem]

[0015] According to a first aspect of the invention, a display device is defined by the following propositions.

[0016] 1. An apparatus 100 for displaying a time or time-derived indication, comprising: a first display mobile unit 10 including a first disk 12 having a first tooth row 11b, a second tooth row 11c, and a number 13 intended to indicate the units digit of the time or time-derived indication; a second display mobile unit 20 including a second disk 22 having a third tooth row 21b, a fourth tooth row 21c, and numbers 23 intended to indicate the tens digit of the time or time-derived indication; a mechanism 90 for driving the first and second mobile units, a first command mobile unit 30 including a fifth tooth row 30a adapted to cooperate with said first tooth row and said third tooth row by interference, in particular by meshing; a second command mobile unit 40 including a sixth tooth row 40a adapted to cooperate with said second tooth row and said fourth tooth row by interference, in particular by meshing; a mechanism 90 including: A display device comprising:

[0017] 2. A display device as described in proposal 1, wherein the first, third, and fifth tooth rows have substantially the same first initial diameter, and / or the second, fourth, and sixth tooth rows have substantially the same second initial diameter.

[0018] 3. The display device according to proposal 2, wherein the first and second original diameters are the same or substantially the same.

[0019] 4. A display device according to any one of proposals 1 to 3, wherein the first command mobile unit 30 and the second command mobile unit 40 are arranged coaxially on an axis A3.

[0020] 5. A display device according to any one of proposals 1 to 4, wherein the drive mechanism 90 includes a drive gear 60 including a seventh tooth row 61 adapted to drive the first mobile unit directly or indirectly.

[0021] 6. A display device according to any one of proposals 1 to 5, wherein the second command mobile unit is adapted to be driven by the first display mobile unit and / or the second display mobile unit.

[0022] 7. A display device according to any one of proposals 1 to 6, wherein the drive mechanism 90 includes an intermediate mobile unit 50 which cooperates with the seventh tooth row of the drive gear 60 and the fifth tooth row of the first command mobile unit 30 by interference, in particular by meshing, and / or the drive mechanism 90 includes a correction mobile unit 70 adapted to directly or indirectly actuate the fifth tooth row of the first mobile unit 30.

[0023] 8. A display device according to any one of proposals 1 to 7, wherein the driving mechanism 90 is of the instantaneous jump type, the semi-instantaneous jump type, or the drag type.

[0024] 9. A display device described in any one of proposals 1 to 8, wherein the first tooth row 11b includes 9 teeth, the second tooth row 11c includes 2 teeth, the third tooth row 21b includes 4 teeth, and the fourth tooth row 21c includes 6 teeth.

[0025] 10. A display device described in any one of proposals 1 to 8, wherein the first tooth row 11b includes 9 teeth, the second tooth row 11c includes 2 teeth, the third tooth row 21b includes 7 teeth, and the fourth tooth row 21c includes 8 teeth.

[0026] 11. A display device according to any one of proposals 1 to 10, wherein the first disc contains the sequence of numbers "0, 1, 2, 3, 4, 5, 6, 7, 8, 9" and / or the second disc contains the sequence of numbers "0, 0, 1, 1, 1, 2, 2, 2, 3, 3".

[0027] 12. A display device according to any one of proposals 1 to 11, wherein the device for displaying time or time-derived indications is a date display device, in particular of the "grande date" type, and the first disc is a ones disc and the second disc is a tens disc.

[0028] According to a first aspect of the invention, a clock movement is defined by the following propositions:

[0029] 13. A clock movement 110 including the device 100 according to any one of suggestions 1 to 12.

[0030] According to a first aspect of the invention, a watch is defined by the following proposition.

[0031] 14. A timepiece 120, in particular a miniature timepiece, in particular a wristwatch, comprising a device 100 according to any one of suggestions 1 to 12 and / or a timepiece movement 110 according to suggestion 13.

[0032] According to a first aspect of the present invention, a method for operating a display device is defined by the following proposition.

[0033] 15. A method for operating a device 100 according to any one of proposals 1 to 12, or a clock movement 110 according to proposal 13, or a clock 120 according to proposal 14, comprising: the first command mobile unit 30 driving the first display mobile unit 10; and / or At the same time, the first command mobile unit 30 drives the first display mobile unit 10, and the first display mobile unit 10 drives the second display mobile unit 20 via the second command mobile unit 40; and / or the first command mobile unit 30 driving the second display mobile unit 20; and / or The method includes a step in which the first command mobile unit 30 simultaneously drives the second display mobile unit 20, and a step in which the second display mobile unit 20 drives the first display mobile unit 10 via the second command mobile unit 40.

[0034] According to a second aspect of the invention, a jumper device is defined by the following proposition.

[0035] 16. At least one first arm 81 including a first beak 81a for positioning the first mobile unit 10; at least one second arm 82 including a second beak 82a for positioning the second mobile unit 20; a resilient element 84 that returns the first and second arms to the first and second mobile unit positioned configuration; on the one hand, said elastic return element and On the other hand, the first and second arms; The levers 83;83' interact with each other A jumper device 80 for a clock device 100, including:

[0036] 17. The device according to proposal 16, wherein the device is a device for determining the angular position of the first mobile unit 10 and the second mobile unit 20 which are rotatably movable.

[0037] 18. The apparatus according to proposal 16 or 17, wherein the apparatus includes a frame 99, the first arm is mounted to pivot relative to the frame 99, and the second arm is mounted to pivot relative to the frame 99, the first and second arms being mounted to pivot in particular about the same axis A5.

[0038] 19. The device includes a frame 99, and the levers 83, 83' are attached to the frame as follows: one translational degree of freedom, and 1 rotational degree of freedom, 19. The device according to any one of proposals 16 to 18, movably mounted to have:

[0039] 20. A device according to any one of proposals 16 to 19, wherein the maximum dimension of the lever is at least two or three times smaller than the maximum dimension of the first arm or the maximum dimension of the second arm.

[0040] 21. The apparatus includes a frame 99, on the levers, respectively grooves 85 on the frame; pins 86 formed or fixed on the frame and on the levers respectively; Including, A device according to any one of proposals 16 to 20, wherein the groove and the pin cooperate with each other to form a mechanical connection with degrees of freedom in translation and rotation.

[0041] 22. The device according to any one of proposals 16 to 21, wherein the elastic return element 84 comprises a leaf spring.

[0042] 23. A device according to any one of proposals 16 to 22, wherein the lever 83' or the elastic return element has a cam surface 89 adapted to engage the elastic return element 84 when the lever pivots.

[0043] According to a second aspect of the invention, a display device is defined by the following proposition. 24. A date display device 100, in particular a "grande date" display device, including a jumper device according to any one of suggestions 16 to 23.

[0044] 25. A date display device 100 according to proposal 24, comprising a first mobile unit 10 for displaying the ones digit and a second display unit 20 for displaying the tens digit.

[0045] According to a second aspect of the invention, the clock movement is defined by the following proposition:

[0046] 26. A clock movement 110 comprising a device according to any one of proposals 16 to 25.

[0047] According to a second aspect of the invention, a watch is defined by the following proposition.

[0048] 27. A timepiece 120, in particular a miniature timepiece, in particular a wristwatch, comprising a device according to any one of suggestions 16 to 25 and / or a timepiece movement 110 according to suggestion 26.

[0049] According to a second aspect of the invention, the method of operation of the device is defined by the following proposition.

[0050] 28. A method for operating a device 80, 100 according to any one of proposals 16 to 25, or a clock movement 110 according to proposal 26, or a clock 120 according to proposal 27, comprising: a step of moving the first arm and / or the second arm as a result of the movement of the first mobile unit 10 and / or the second mobile unit 20, and a step of mounting the elastic return element 84 as a result of the movement of the lever 83; 83'; a return step of the elastic return element 84, which causes a rotational drive of the first mobile unit 10 and / or the second mobile unit 20 by means of the lever 83; 83' and the first arm and / or the second arm; A method comprising:

[0051] 29. The equipment step: The equipment is provided by the movement of the first mobile unit. The equipment is provided by the movement of the second mobile unit. the equipment is provided by movement of the first and second mobile units; The method of proposal 28 has the same strength in at least two of the situations.

[0052] Any combination of features of the first and second aspects may be implemented unless there is a technical or logical incompatibility.

[0053] The accompanying drawings illustrate two embodiments of the watch by way of example. [Brief explanation of the drawings]

[0054] [Figure 1] FIG. 1 shows a first embodiment of the timepiece. [Figure 2] FIG. 2 is a detailed diagram of a first embodiment of an apparatus for displaying a time or time-derived indication. [Figure 3] FIG. 3 is a cross-sectional view (on plane II of FIG. 2) of a first embodiment of a device for displaying a time or time-derived indication. [Figure 4] FIG. 4 is a cross-sectional view (on plane II-II of FIG. 2) of a first embodiment of a device for displaying a time or time-derived indication. [Figure 5] FIG. 5 shows a cross-sectional view (on two cross sections on the planes III-III and IV-IV of FIGS. 3 and 4) of a first variant of the first embodiment of a device for displaying a time or time-derived indication. [Figure 6] FIG. 6 shows a cross-sectional view (on two cross sections on the planes III-III and IV-IV of FIGS. 3 and 4) of a second variant of the first embodiment of a device for displaying a time or time-derived indication. [Figure 7] FIG. 7 shows an illustration of the operation of the first variant of the first embodiment of the display device. [Figure 8] FIG. 8 shows an illustration of the operation of the second variant of the first embodiment of the display device. [Figure 9] FIG. 9 shows a second embodiment of the timepiece. [Figure 10] FIG. 10 shows a detailed view of the first embodiment of the indexing device. [Figure 11] FIG. 11 shows an explanatory diagram of the operation of the first embodiment of the indexing device. [Figure 12] FIG. 12 shows an explanatory diagram of the operation of the first embodiment of the indexing device. [Figure 13] FIG. 13 shows an explanatory diagram of the operation of the first embodiment of the indexing device. [Figure 14] FIG. 14 shows an explanatory diagram of the operation of the second embodiment of the indexing device. [Figure 15] FIG. 15 shows an explanatory diagram of the operation of the second embodiment of the indexing device. [Figure 16] FIG. 16 shows an explanatory diagram of the operation of the second embodiment of the indexing device. DETAILED DESCRIPTION OF THE INVENTION

[0055] A first embodiment of a watch 120 is described below with reference to FIGS.

[0056] The timepiece 120 is, for example, a small timepiece, in particular a wristwatch.

[0057] The watch 120 includes a watch movement 110. The watch movement is intended to be mounted within a watch case to protect it from the external environment.

[0058] The watch movement 110 may be an electronic movement or a mechanical movement, and in particular an automatic movement.

[0059] The clock movement includes a device 100 for displaying a time or time-derived indication. The time or time-derived indication is preferably a date indication. However, the indication may also be of other type, in particular a numeric indication of two or more digits, such as a year indication or a month indication or a week indication or an hour indication or a minute indication or a second indication.

[0060] In the first embodiment, the display device is, for example, a "Grande Date" type date display device.

[0061] The apparatus 100 for displaying a time or time-derived indication comprises: a first display mobile unit 10 comprising a first toothed row 11b, a second toothed row 11c and a first disc 12 bearing a number 13 intended to display the units digit of a time or time-derived indication; a second display mobile unit 20 including a third tooth row 21b, a fourth tooth row 21c and a second disc 22 bearing numerals 23 intended to display the tens digit of a time or time-derived indication; a mechanism 90 for driving the first and second mobile units; Includes.

[0062] The drive mechanism 90 is a first command mobile unit 30 including a fifth set of teeth 30a adapted to cooperate by interference, in particular by meshing, with the first and third set of teeth; a second command mobile unit 40 including a sixth set of teeth 40a adapted to cooperate by interference, in particular by meshing, with the second and fourth set of teeth; Includes.

[0063] The first display mobile unit 10 rotates about a first axis A1. The second display mobile unit 20 rotates about a second axis A2. The first and second axes are preferably parallel or substantially parallel. The first and second mobile units are preferably arranged side by side, with the ones digit of the first mobile unit and the tens digit of the second mobile unit positioned adjacent to each other to indicate a value or information, such as the value of the day of the month. The device may include markers, such as a window in the dial or a plate of a color opposite to the colors of the numbers 13 and 23 on the disks 12 and 22, respectively, that allow for indicating or defining an information reading area.

[0064] The display device 100 further includes an angular position indexing system 80 for the first and second display mobile units, which includes arms 81 and 82 adapted to angularly index the first and second display mobile units, respectively, as described below.

[0065] The first display mobile unit 10 includes a first gear 11, which includes a first tooth row 11b and a second tooth row 11c. The first tooth row has, for example, nine teeth. The first tooth row is, for example, a set of ten teeth equally angularly distributed around the axis A1, with one tooth removed or not formed in the ten teeth. In other words, the first tooth row is a set of ten teeth from which one tooth is missing. The second tooth row 11c has, for example, two teeth. The second tooth row is, for example, a set of ten teeth equally angularly distributed around the axis A1, with eight teeth removed or not formed in the ten teeth. In other words, the second tooth row is a set of ten teeth from which eight teeth are missing. The two teeth of the second tooth row are preferably juxtaposed, i.e., there is no space between the two teeth of the second tooth row, vacated by a missing tooth. The arrangement of these tooth rows, where teeth are missing, is adapted to impart a specific order to the drive of not only the first mobile unit, but also the second mobile unit, as described below. The first and second tooth rows may be viewed as constituting a single tooth row without a missing tooth, such that one tooth located in the first tooth row is in the angular position of a missing tooth in the second tooth row, and one tooth located in the second tooth row is in the angular position of a missing tooth in the first tooth row. Furthermore, at least one tooth of the first tooth row may likewise be juxtaposed to a tooth of the second tooth row.

[0066] The first disc 12 contains ten units numbers from 0 to 9. These numbers are represented on the units disc 12.

[0067] The first tooth row 11b and the second tooth row 11c are juxtaposed at two distinct heights, respectively distributed in planes P1 and P2, as shown in FIG. 3. Planes P1 and P2 are parallel to each other and distinct from each other. The planes are preferably perpendicular to axis A1. Thus, plane P1 intersects with the first tooth row but not with the second tooth row. Similarly, plane P2 intersects with the second tooth row but not with the first tooth row.

[0068] The first and second tooth rows are fixedly attached to each other in rotation about axis A1. Thus, one of the tooth rows cannot rotate a predetermined angle about axis A1 unless the other of the tooth rows rotates the same predetermined angle. For example, the first and second tooth rows are fixed to each other or connected by a built-in connection. Alternatively, the first and second tooth rows are integral or manufactured as a single block or element.

[0069] The second display mobile unit 20 includes a second gear 21, which includes a third tooth row 21b and a fourth tooth row 21c. The third tooth row has, for example, four teeth. The third tooth row is, for example, a set of ten teeth equally angularly distributed around the axis A2, with six of the ten teeth removed or not formed. In other words, the third tooth row is a set of ten teeth from which six teeth are missing. The four teeth of the third tooth row are preferably distributed as follows: two adjacent teeth, a space left by two missing teeth, one tooth, a space left by two missing teeth, and one tooth, a space left by two missing teeth.

[0070] The fourth tooth row 21c may have, for example, six teeth. The fourth tooth row may be, for example, a set of ten teeth equally angularly distributed around the axis A2, with four of the ten teeth removed or not formed. In other words, the fourth tooth row is a set of ten teeth from which four teeth are missing. The six teeth of the fourth tooth row are preferably distributed as follows: two adjacent teeth, the space left by one missing tooth, two adjacent teeth, the space left by one missing tooth, two adjacent teeth, the space left by two missing teeth. The third and fourth tooth rows may be viewed as constituting a single tooth row without missing teeth, such that one tooth located in the third tooth row is at the angular position of the missing tooth in the fourth tooth row, and one tooth located in the fourth tooth row is at the angular position of the missing tooth in the third tooth row. Additionally, at least one tooth of the third row of teeth may be similarly juxtaposed to a tooth of the fourth row of teeth.

[0071] These tooth arrangements lacking teeth are adapted to impart a specific order to the driving of the first mobile unit as described below, as well as the second mobile unit. In particular, the second command mobile unit is also adapted to be driven by the first display mobile unit and / or the second display mobile unit.

[0072] The second disc 22 contains ten tens digits from 0 to 3. These digits are represented on the tens disc 22. The digits are represented in the following order: 0, 0, 1, 1, 1, 2, 2, 2, 3, 3.

[0073] The third tooth row 21b and the fourth tooth row 21c are juxtaposed at two distinct heights, respectively disposed on planes P1 and P2, as shown in Figure 3. Planes P1 and P2 are preferably perpendicular to axis A2. Thus, plane P1 intersects the third tooth row but not the fourth tooth row. Similarly, plane P2 intersects the fourth tooth row but not the third tooth row.

[0074] The third and fourth tooth rows are fixedly attached to each other in rotation about axis A2. Thus, one of the tooth rows cannot rotate a predetermined angle about axis A2 unless the other of the tooth rows rotates the same predetermined angle. For example, the third and fourth tooth rows are fixed to each other or connected by a built-in connection. Alternatively, the third and fourth tooth rows are integral or manufactured as a single block or element.

[0075] In addition to the first command mobile unit and the second command mobile unit, the drive mechanism 90 includes a drive gear 60 including a seventh tooth row 61 adapted to directly or indirectly drive the first command mobile unit.

[0076] In particular, the drive mechanism 90 may include an intermediate mobile unit 50 which cooperates by interference, in particular by meshing, with the seventh tooth row 61 of the drive gear 60 and the fifth tooth row of the first command mobile unit 30. The seventh tooth row 61 is thus adapted to indirectly drive the first command mobile unit (via the intermediate mobile unit 50).

[0077] The drive mechanism 90 may be of an instantaneous jump type, a semi-instantaneous jump type, or a drag type.

[0078] The drive mechanism 90 is constructed and / or arranged to move the first command mobile unit forward one step every 24 hours, i.e., to rotate the first display mobile unit one-tenth of a rotation every 24 hours.

[0079] As described above, the first command mobile unit 30 enables the driving of the first display mobile unit 10 and / or the second display mobile unit 20, more specifically the driving of the first tooth row 11b and / or the third tooth row 21b, via the fifth tooth row 30a.

[0080] As described above, the second command mobile unit 40 can drive the first display mobile unit 10 and / or the second display mobile unit 20, more specifically the second tooth row 11c and / or the fourth tooth row 21c, via the sixth tooth row 40a. Furthermore, the second command mobile unit is driven by the first display mobile unit and / or the second display mobile unit.

[0081] The first and second command mobile units 30 and 40 are, for example, coaxial with respect to a third axis A3, which is preferably parallel to the axes A1 and A2.

[0082] The fifth and sixth tooth rows 30a and 40a are juxtaposed at two distinct heights, respectively disposed on planes P1 and P2, as shown in FIG. 4. Planes P1 and P2 are preferably perpendicular to axis A3. Thus, plane P1 intersects the fifth tooth row but not the sixth tooth row. Similarly, plane P2 intersects the sixth tooth row but not the fifth tooth row.

[0083] The first and second command mobile units 30 and 40 are mounted free-wheeling relative to each other, in other words, the first and second command mobile units are free to rotate relative to each other.

[0084] The fifth and sixth tooth rows 30a and 40a each have, for example, ten teeth. The tooth rows may have different numbers of teeth. However, the fifth and sixth tooth rows 30a and 40a advantageously have the same number of teeth.

[0085] The first and second tooth rows 11b and 21b, arranged at the height of the first plane P1, are each adapted to cooperate with a fifth tooth row 30a of a first command mobile unit 30, also arranged at the height of the first plane P1. This first command mobile unit 30, and more particularly the fifth tooth row 30a, is driven one step every 24 hours.

[0086] The two display mobile units 10 and 20 are also arranged at the height of the second plane P2 and are driven using a sixth tooth row 40a of the second command mobile unit 40, which is adapted to cooperate with tooth rows 11c and 21c. Depending on the sequence of the date jumps, the second command mobile unit 40 can drive or be driven by tooth rows 11c and 21c.

[0087] More specifically, using this tooth row 50a as a means, the drive mechanism 90 drives the fifth tooth row 30a of the first command mobile unit 30 one step per day, and similarly drives the first display mobile unit 10 and / or the second display mobile unit 20 via the respective tooth rows 11b and 21b depending on the date. Depending on the date, the tooth row 40a of the second command mobile unit 40 may be driven by the first display mobile unit 10, more specifically by the tooth row 11c, and / or by the second display mobile unit 20, more specifically by the tooth row 21c. When driven, the second command mobile unit 40 can similarly drive the first display mobile unit 10 via the tooth row 11c and / or the second display mobile unit 20 via the tooth row 21c.

[0088] 6, a second modification of the first embodiment changes only the configuration of the second display mobile unit 20. In this modification, the second display mobile unit 20 includes a third tooth row 21b having seven teeth and arranged on a plane P1, and a fourth tooth row 21c having eight teeth and arranged on a plane P2.

[0089] The third tooth row is, for example, a set of 10 teeth equiangularly distributed around the axis A2, with three of the 10 teeth removed or not formed. In other words, the third tooth row is a set of 10 teeth with three teeth missing from the 10 teeth. The seven teeth of the third tooth row are preferably distributed as follows: three adjacent teeth and the space left by one missing tooth, two adjacent teeth and the space left by one missing tooth, and two adjacent teeth and the space left by one missing tooth.

[0090] The fourth tooth row is, for example, a set of 10 teeth equally angularly distributed around the axis A2, with two of the 10 teeth removed or not formed. In other words, the fourth tooth row is a set of 10 teeth with two teeth missing from the 10 teeth. The eight teeth of the fourth tooth row are preferably distributed as follows: eight juxtaposed teeth, the space left by the two missing teeth.

[0091] This variant has the advantage in particular of providing tooth rows 21b and 21c with a reduced number of missing, removed or unformed teeth, which can prevent distortion of arms 81, 82, more particularly arm 82 cooperating with the second mobile unit.

[0092] A second embodiment of the watch 120 is described below with reference to FIG.

[0093] The timepiece 120 is, for example, a small timepiece, in particular a wristwatch.

[0094] The watch 120 includes a watch movement 110. The watch movement is intended to be mounted within a watch case to protect it from the external environment.

[0095] The watch movement 110 may be an electronic movement or a mechanical movement, and in particular an automatic movement.

[0096] The clock movement includes a device 100 for displaying a time or time-derived indication. The time or time-derived indication is preferably a date indication. However, the indication may also be of other type, in particular a numeric indication of two or more digits, such as a year indication or a month indication or an hour indication or a minute indication or a second indication.

[0097] In the second embodiment, the display device is, for example, a "Grande Date" date display type display device.

[0098] In this second embodiment, the display device further includes a correction mobile unit 70 that acts on the intermediate mobile unit 50, more specifically on the tooth row 50a. Alternatively, the correction may be achieved by directly driving the fifth tooth row 30a of the first command mobile unit 30. The device may further include an arm (replacing the correction mobile unit 70) that is used to act on the mobile unit 50 or the first command mobile unit 30 to achieve the correction.

[0099] Various design variations are possible for driving the two display disks 12 and 22. All the variations described here have the same number of teeth on the display mobile units 10 and 20 and on the command mobile units 30 and 40, and function according to the same order of displaying the date. The only difference between all the variations described here is the arrangement and number of teeth on the third and fourth tooth rows of the display mobile unit 20.

[0100] Regardless of embodiment or variation, the first, third and fifth rows of teeth preferably have substantially the same first primitive diameter.

[0101] Regardless of the embodiment or variant, the second, fourth and sixth rows of teeth preferably have substantially the same second original diameter.

[0102] Regardless of the embodiment or variation, the first and second original diameters are preferably equal or substantially equal.

[0103] Regardless of the embodiment or variant, the first and second command mobile units 30 and 40 are preferably arranged coaxially, although it is also possible to place them on two separate axes while maintaining the same operation of the kinematic chain of the display device.

[0104] Regardless of the embodiment or variant, the first tooth row 11b, the second tooth row 11c, the third tooth row 21b, and the fourth tooth row 21c, as well as the fifth tooth row 30a and the sixth tooth row 40a of the first and second command mobile units 30 and 40, preferably all have substantially the same contours and modules. These six tooth rows, whether missing or not, also have the same angular pitch, with ten teeth equally angularly distributed around their respective axes. However, these characteristics do not constitute limitations on the functionality of the device. For example, it is entirely possible to provide the two display mobile units 10 and 20 with different numbers of teeth so as to advance different sequences of numbers on the other two display disks 12 and 22. The number of numbers on the two display mobile units 10 and 20 does not have to be the same. Similarly, the number of teeth on the gears 11 and 21 does not have to be the same. The number of teeth on the two command mobile units 30 and 40 also does not have any effect on the jump sequence of the device. The number of teeth in the fifth tooth row 30a of the first command mobile unit 30 may be different from the number of teeth in the sixth tooth row 40a of the second command mobile unit 40.

[0105] Regardless of the embodiment or variant, the number of locations where the teeth of the tooth rows 11b, 11c, 21b, and 21c of the two display mobile units 10 and 20 can be arranged may be a multiple of the number of numbers shown on the display discs 12 and 22.

[0106] Regardless of the embodiment or variant, the interlocking of the tooth rows 11b, 11c, 21b, and 21c of the two display mobile units 10 and 20 may similarly be achieved by different contours and / or modules of the tooth rows 30a and 40a of the two command mobile units 30 and 40. For example, the tooth rows 30a and 40a may be substantially half the size of the tooth rows 11b, 11c, 21b, and 21c.

[0107] Another design variant may have two overlapping or partially overlapping display discs 12 and 22. It is also possible to arrange the two display discs coaxially. In the case of a coaxial overlap of the display discs, the tooth rows 11b, 11c, 21b, and 21c of the two display mobile units 10 and 20 must be coaxial, so the structure of the kinematic chain must be displaced in four separate planes instead of two. However, the kinematic chain remains unchanged, since it is still possible to obtain the fifth tooth row 30a of the first command mobile unit 30 meshing with the first and third tooth rows 11b and 21b, and the sixth tooth row 40a of the second command mobile unit 40 meshing with the second and fourth tooth rows 11c and 21c.

[0108] Regardless of the embodiment or variant, a locking system, particularly a "Maltese cross", may be added to one or more auxiliary heights of the display mobile units 10 and 20 or the command mobile units 30 and 40.

[0109] Regardless of the embodiment or variant, the first command mobile unit 30 may be driven directly by the intermediate mobile unit 50 via the respective tooth rows 30a and 50a or by auxiliary heights of teeth not shown.

[0110] Regardless of the embodiment or variant, it is possible to drive the first and second mobile units directly from the first command mobile unit 30 (without relying on the mobile units 50 and 60). For this purpose, the first command mobile unit 30 may include a limited number of n teeth, for example, one tooth, two teeth, or three teeth (equidistantly distributed), configured to rotate 1 / n rotations every 24 hours. The drive may be of the instantaneous jump type, semi-instantaneous jump type, or drag type. For example, the mobile unit 30 may include only two diametrically opposed teeth that drive the first and second display mobile units 10 and 20 on the centerline. In this case, the command mobile unit must perform half a rotation every 24 hours.

[0111] Regardless of the embodiment or variant, the representation of the number 0 on the tens disc 22 may be replaced by a gap, i.e., an area on the disc where there are no numbers. Thus, the sequence 0,0,1,1,1,2,2,2,3,3 may be replaced by "gap", "gap", 1,1,1,2,2,2,3,3.

[0112] Regardless of the embodiment or variant, the timepiece, and in particular the movement or display device, may include a jumper or indexing device 80, and in particular a first embodiment of a jumper or indexing device 80 described below with reference to Figures 9 to 13.

[0113] The jumper or indexing device 80 is at least one first arm 81 including a first beak 81a for positioning the first mobile unit 10; at least one second arm 82 including a second beak 82a for positioning the second mobile unit 20; an element 84 for resiliently returning the first and second arms to the positioning configuration of the first and second mobile units; On the one hand, an elastic return element; On the other hand, first and second arms, - a lever 83 that interacts between Includes.

[0114] The jumper or indexing device 80 allows for the indexing of the angular position of each of the first and second mobile units, i.e. the definition of specific angular positions of each of the first and second mobile units among a certain number of stable angular positions, for example 10 positions, which are positions that allow the mobile units to represent information.

[0115] As mentioned above, the first mobile unit 10 is rotatably movable about axis A1, and the second mobile unit 20 is rotatably movable about axis A2. The apparatus 80 preferably includes a frame 99 on which the first mobile unit 10 is rotatably mounted about axis A1, and the second mobile unit 20 is rotatably mounted about axis A2. The frame may be a movement blank, in particular a plate or a calendar ring 99.

[0116] A first arm or lever 81 is mounted to pivot relative to the frame 99 about a first arm pivot axis A5.

[0117] A second arm or lever 82 is mounted to pivot relative to the frame 99 about a second arm pivot axis A5.

[0118] The first arm or lever 81, in particular the first beak 81a, is intended to cooperate with the first tooth row 11b and the second tooth row 11c of the first gear 11 of the first display mobile unit 10. The second arm or lever 82, in particular the second beak 82a, is intended to cooperate with the third tooth row 21b and the fourth tooth row 21c of the second gear 21 of the second display mobile unit 20. These two arms or levers 81, 82, in particular the beaks, interact with the teeth of the tooth rows to enable angular indexing of the two display mobile units 10 and 20, as shown in FIG.

[0119] More specifically, the indexing of the first display mobile unit 10 is handled by a beak or head 81a that is part of the arm 81. The head 81a has two side surfaces 81b and 81c. The arrangement of these two side surfaces, which cooperate by contact with the side surfaces of successive teeth of the first tooth row 11b and the second tooth row 11c, allows angular indexing of the first display mobile unit 10, as shown in FIG.

[0120] In a similar manner, indexing of the second display mobile unit 20 is handled by a beak or head 82a that is part of the arm 82. The head 82a has two side surfaces 82b and 82c. The arrangement of these two side surfaces, which cooperate by contact with the side surfaces of successive teeth of the third tooth row 21b and the fourth tooth row 21c, allows angular indexing of the second display mobile unit 20, as shown in FIG.

[0121] The elastic return element 84 enables elastic return of the arms or levers 81 and 82 by means of interaction means 83, such as a lever, which enables the transmission and distribution of the force of the elastic return element 84 between the two arms or levers 81 and 82. To this end, the interaction means interacts or is arranged between the arms or levers 81 and 82 and the elastic return element 84. The elastic return element 84 is mechanically connected to the frame 99. For example, the elastic return element 84 has one end mechanically fixed to the frame 99. The return element advantageously takes the form of a leaf spring.

[0122] The interaction means 83 preferably comprises a pin 86 guided in a groove 85 formed on the frame. Said groove 85 associated with the pin 86 enables the interaction means 83 to provide a first degree of freedom of rotation, in particular about an axis parallel or substantially parallel to the axis A5, and a second degree of freedom of translation perpendicular to the centre line defined by the axes A1 and A2 or substantially perpendicular to the centre line defined by the axes A1 and A2 with respect to the frame.

[0123] In a variant not shown, the pins may be formed or fixed to the frame and the grooves may be formed in the interaction means, in other words, in a variant the configuration may be reversed.

[0124] The interaction means 83 may include, as shown in FIG. 10, in particular a first contact area 83a or 83a' which cooperates with the elastic return element 84, in particular the second end of the leaf spring 84, a second contact area 83b or 83b' which cooperates with the first arm or lever 81, and a third contact area 83c or 83c' which cooperates with the second arm or lever 82.

[0125] The spring 84 transmits its return force via the first contact area 83a or 83a' to the interaction means 83. The return force is then transmitted and distributed between the first and second arms 81 and 82 by means of the second and third contact areas 83b or 83b' and 83c or 83c', respectively.

[0126] A second embodiment of a jumper or indexing device 80 is now described with reference to Figures 14 to 16.

[0127] The second embodiment of the jumper or indexing device 80 differs from the first embodiment of the jumper or indexing device 80 primarily or only in the shape of the interaction means 83'.

[0128] In the second embodiment of the jumper or indexing device 80, the interaction means 83' advantageously have a generally square or trapezoidal cross section in the plane of Figures 14 to 16 perpendicular to the axes A1, A2 and A5.

[0129] The interaction means 83' in particular comprises a first contact area 83a' cooperating with the elastic return element 84, in particular the second end of the leaf spring 84, a second contact area 83b' cooperating with the first arm or lever 81 and a third contact area 83c' cooperating with the second arm or lever 82, as shown in Figures 14 to 16.

[0130] The first contact area 83a' may extend along the smaller base of the trapezoidal cross section. This contact area advantageously constitutes a cam surface 89 adapted to arm the elastic return element 84 when the interaction means pivots about an axis perpendicular to the plane of Figures 14 to 16, in particular in rotation about the axis of the pin 86. Indeed, in the position shown in Figures 14 to 16, relative to a rest or neutral position as shown in Figure 10, in which the surface 89 is substantially parallel to the end of the leaf spring 84, the interaction means 83' has moved translationally downwards, perpendicular to the axis A5, towards the leaf spring 84, pivoted about the axis of the pin 86. Such movement causes a first movement or arming of the elastic return element 84 due to the translational movement of the interaction means 83', and a second movement or arming of the elastic return element 84 due to the rotation of the interaction means 83' via the cam surface 89. The cam surface 89 is arranged or adapted so that in the configuration of Figures 14 to 16 the mounting of the elastic return element 84 is the same or substantially the same as that of the configuration of Figure 15 in which the interaction means moves in translation downwards in the direction of the leaf spring 84, perpendicular to the axis A5, without or substantially without pivoting about the axis of the pin 86.

[0131] The distribution of the force generated by the elastic return element 84 between the two arms 81, 82 depends on the relative positions of the three contact areas 83a, 83b and 83c or 83a', 83b' and 83c', the shape adopted by the arms 81, 82 and the elastic return element 84 cooperating with the three contact areas 83a, 83b and 83c or 83a', 83b' and 83c', the shape and position of the guiding action of the means 83 or 83' and the relative positions between the arms 81 and 82.

[0132] In one variant, the first and second arms may be formed from the same monolithic or integral assembly. In this variant, the monolithic or integral assembly may be adapted to allow a degree of freedom of rotation of the first and second arms about an axis parallel, substantially parallel, or coincident with axis A5, for example, using elastic pivots of the control rod cluster control type. The interaction means 83 or 83' may likewise be part of the monolithic or integral assembly and, via elastic connections formed for this purpose, provide a degree of freedom of rotation about an axis parallel to the axis of rotation of the first and second arms and a second degree of freedom of translation relative to the frame perpendicular to the centerline defined by axes A1 and A2, or substantially perpendicular to the centerline defined by axes A1 and A2. The monolithic or integral assembly may also include a subframe fixed to the frame and adapted to position the interaction means so that they can contact the ends of the springs. Thus, the proposed mobile unit indexing device may be constructed as multiple parts and / or one or more flexible guide parts, allowing the functions described herein to be combined.

[0133] Regardless of the variant, the maximum dimension of the interaction means 83 or 83' is preferably at least two or at least three times smaller than the maximum dimension of the first arm and / or the maximum dimension of the second arm.

[0134] In one variant, the shape of the elastic return element 84, the interaction means 83 or 83', the arms 81, 82 and, consequently, the contact areas 83a, 83b and 83c or 83a', 83b' and 83c' may be modified so as to modify the distribution of the force transmitted by the elastic return element 84 to the two arms or levers 81, 82 via the interaction means 83 or 83'. By the same logic, such a shape modification makes it possible to modify the force and / or force variation generated by the elastic return element 84 depending on the number of acted arms or levers, thus making it possible to adjust the return force at the height of the lever according to the design requirements.

[0135] In a variant, the various degrees of freedom conferred on the interaction means may be obtained without pins or grooves. For this purpose, the interaction means 83 or 83' must be guided directly, for example by arms or levers 81, 82 and / or elastic return elements 84, and the shape of these parts must be adapted accordingly. In a design of this type, it is also possible to provide additional degrees of freedom, for example a second degree of freedom of translation in a plane perpendicular to axis A5.

[0136] In a variant, the pivoting of the arms or levers 81 and 82 may be other than coaxial.

[0137] In the variant shown in Figure 10, in particular, the two arms or levers 81 and 82 act in opposition to each other with respect to the axis A5. However, in an alternative variant, these two arms or levers 81 and 82 may be superimposed, in particular in the case where the two display mobile units are superimposed or coaxial. In this case, the interaction means 83 or 83' may advantageously be mounted with a pivot connection about an axis parallel to the plane of Figures 11 to 13.

[0138] In a variant, the mobile unit indexing device may also be implemented by translationally acting arms or levers 81 and 82. In this case, the interaction means 83 or 83' are advantageously arranged to abut against each end of the translationally acting arms or levers 81 and 82.

[0139] In different variants, the elastic return element 84 may in particular comprise one or more blades, or may be a coil spring, a flexible guide or any other device capable of applying a return torque or force. The elastic return element may in particular comprise two leaf springs separated by a portion forming a cam adapted to cooperate with the interaction means.

[0140] In one variant, an intermediate part may be added between the interaction means 83 or 83 ′ and the elastic return element 84 .

[0141] By extension, the indexing device 80 can function with more than two arms or levers as well.

[0142] The different situations of operation of the arms or levers 81, 82 depending on the various possible sequences during the date jump are explained below.

[0143] Thanks to the arrangement and adaptation of the interaction means 83 or 83', the deformation of the elastic return element 84 when the two arms or levers 81, 82 are actuated is advantageously equal or substantially equal to the deformation of the elastic return element 84 when only one of the two arms or levers 81, 82 is actuated. This results in equal or substantially equal energy consumption regardless of the number of actuated arms or levers.

[0144] An embodiment of a first method of operation of the above-mentioned device 100 or of the above-mentioned clock movement 110 or of the above-mentioned clock 120 will now be described with reference to FIGS.

[0145] The method is: - the first command mobile unit 30 drives the first display mobile unit 10; and / or - simultaneously, the first command mobile unit 30 drives the first display mobile unit 10, and the first display mobile unit 10 drives the second display mobile unit 20 via the second command mobile unit 40; and / or - the first command mobile unit 30 drives the second display mobile unit 20; and / or - simultaneously, the first command mobile unit 30 drives the second display mobile unit 20, and the second display mobile unit 20 drives the first display mobile unit 10 via the second command mobile unit 40; Includes.

[0146] An embodiment of a second method of operation of the above-mentioned device 80 or the above-mentioned device 100 or the above-mentioned clock movement 110 or the above-mentioned clock 120 will now be described with reference to FIGS. 11 to 16.

[0147] The method is: - the step of moving the first arm and / or the second arm as a result of the movement of the first mobile unit 10 and / or the second mobile unit 20 and the step of equipping the elastic return element 84 as a result of the movement of the lever 83, 83', and a return step of the elastic return element 84 (i.e. a return step of the elastic potential energy) which causes a rotational drive of the first mobile unit 10 and / or the second mobile unit 20 via the lever 83, 83' and the first arm and / or the second arm, in particular until the first and / or second mobile unit reaches a next rest or index position. Includes.

[0148] In the embodiment described with reference to Figures 14 to 16, the mounting step preferably has the same strength in at least two of the following situations: - Equipment is provided by the movement of the 1st Mobile Unit, - Equipment is provided by the movement of the second mobile unit, - The equipment is provided by the movement of the first and second mobile units.

[0149] The kinematic chains that drive the display mobile units 10 and 20 by the command mobile units 30 and 40 are different depending on the date of the jump. Various possible situations are described below, with particular reference to the first variant of the first embodiment. The diagram in Figure 7 illustrates these various situations.

[0150] The transition from "29" to "30". The display device shows "29." The tooth row 50a of the intermediate mobile unit 50 completes one step in the counterclockwise direction, driving the fifth tooth row 30a of the first command mobile unit 30 in the clockwise direction. As a result, the fifth tooth row 30a drives the first tooth row 11b of the first display mobile unit 10 in the counterclockwise direction. The units display on the first display disk 12 changes from "9" to "0." The fifth tooth row 30a does not drive the third tooth row 21b of the second display mobile unit 20. However, as the rotation continues, the tooth row 11c of the first display mobile unit 10 drives the sixth tooth row 40a of the second command mobile unit 40, which in turn drives the tooth row 21c of the second display mobile unit 20. The tens display on the second display disk 22 then changes from "2" to "3."

[0151] This driving principle is the same for the transition from "09" to "10" and from "19" to "20".

[0152] Transitioning from "30" to "31". The display device shows "30." The tooth row 50a of the intermediate mobile unit 50 completes one step in the counterclockwise direction, driving the fifth tooth row 30a of the first command mobile unit 30 in the clockwise direction. As a result, the fifth tooth row 30a drives the first tooth row 11b of the first display mobile unit 10 in the counterclockwise direction. The units display on the first display disk 12 changes from "0" to "1." The fifth tooth row 30a does not drive the third tooth row 21b of the second display mobile unit 20. However, as the rotation continues, the tooth row 11c of the first display mobile unit 10 drives the sixth tooth row 40a of the second command mobile unit 40, which in turn drives the tooth row 21c of the second display mobile unit 20. The tens display on the second display disk 22 changes to the next digit, i.e., from "3" to "3," because the "3" display is duplicated on the disk 22.

[0153] This driving principle is the same for the transitions from "10" to "11" and from "20" to "21", since the indications "1" and "2" also overlap.

[0154] Transition from "31" to "01". The display device shows "31." The fifth tooth row 50a of the intermediate mobile unit 50 completes one step counterclockwise, driving the fifth tooth row 30a of the first command mobile unit 30 clockwise. Because the fifth tooth row 30a faces the missing, removed, or unformed tooth, it can no longer drive the tooth row 11b of the first display mobile unit 10. The fifth tooth row 30a drives the tooth row 21b of the second display mobile unit 20 counterclockwise. The tens digit display of the second display disk 22 moves to the next tens digit, from "3" to "0." As it rotates, the tooth row 21c of the second display mobile unit 20 cannot drive the second command mobile unit 40 via the sixth tooth row 40a because the tooth row 21c is now missing, removed, or unformed. The first ones digit display disk 12 of the first display mobile unit 10 remains in place.

[0155] In the transition from the date "31" to "01", as illustrated in FIGS. 11 and 14, only the second display mobile unit 20 is driven.

[0156] In the first stage of the operation of the second arm 82, under the influence of the rotation of the second display mobile unit 20, the second arm 82 is actuated in a first rotational direction and moves up the teeth of the tooth row 21b or 21c. As it rotates, the second arm 82 is equipped with an elastic return element 84 via an interaction means 83 or 83'. More specifically, the second contact area 83b or 83b' abuts the first arm 81, which is fixed in place, and the location where the second arm 82 abuts the third contact area 83c or 83c' is movable, so that the interaction means 83 or 83' rotates and moves translationally in the first direction of movement within the groove 85.

[0157] In a second phase of actuation of the second arm 82, following the apex of the tooth of tooth row 21b or 21c, the second arm 82 is actuated in a second rotational direction by the effect of the re-equipping of the elastic return element 84 via the interaction means 83 or 83' and descends the tooth of tooth row 21b or 21c. The interaction means 83 or 83' rotates and now translates in a second direction of movement opposite to the first direction of movement.

[0158] Transition from "01" to "02". The display device shows "01." The fifth tooth row 50a of the intermediate mobile unit 50 completes one step in the counterclockwise direction, driving the fifth tooth row 30a of the first command mobile unit 30 in the clockwise direction. Because the fifth tooth row 30a faces the missing, removed, or unformed tooth, it can no longer drive the tooth row 11b of the first display mobile unit 10. Meanwhile, this fifth tooth row 30a drives the tooth row 21b of the second display mobile unit 20 in the counterclockwise direction. The tens digit display of the second display disk 22 moves to the next tens digit, "0," due to the overlapping tens digit "0" display on the disk 22. As it rotates, the tooth row 21c of the second display mobile unit 20 drives the sixth tooth row 40a of the second command mobile unit 40, which in turn drives the tooth row 11c of the first display mobile unit 10. The display of the ones digit on the first display disk 12 changes from the ones digit "1" to the ones digit "2".

[0159] Here, as shown in FIGS. 12 to 15, the two display mobile units 10 and 20 are driven simultaneously.

[0160] During the first phase of the two arms' movement, the first and second arms 81 and 82 are actuated in a first rotational direction by the rotation of the first and second mobile display units 10 and 20, respectively, and move up the teeth of the tooth rows 11b or 11c and 21b or 21c. As they rotate, the first and second arms 81 and 82 engage the elastic return element 84 via the interaction means 83 or 83'. More specifically, the interaction means 83 or 83' translates within the groove 85 in the first direction of movement in such a way that the combined effect of the first arm 81 abutting against the second contact area 83b or 83b' and the second arm 82 abutting against the third contact area 83c or 83c' engages the elastic return element 84 via the first contact area 83a or 83a'. Here, the movement of the interaction means 83 or 83' is a translational or substantially translational movement. It is also possible for the interaction means 83 or 83' to be pivotable. Nevertheless, this rotational potential motion is of small amplitude, or very small amplitude, compared to the translational motion.

[0161] In a second phase of actuation of the two arms, following the surmounting of the tooth apex of tooth row 11b or 11c or 21b or 21c, the first and second arms 81 and 82 are actuated in a second rotational direction and move down the tooth, by the effect of the re-equipping of the elastic return element 84 via the interaction means 83 or 83', which now moves translationally in a second direction of movement, opposite to the first direction of movement.

[0162] This driving principle is the same for the transitions from "11" to "12" and from "21" to "22", since the indications "1" and "2" also overlap.

[0163] Passing from "02" to "03". The display device shows "02." The fifth tooth row 50a of the intermediate mobile unit completes one step in the counterclockwise direction, driving the fifth tooth row 30a of the first command mobile unit 30 in the clockwise direction. The fifth tooth row 30a drives the tooth row 11b of the first display mobile unit 10 in the counterclockwise direction. The units digit display on the first display disk 12 changes to the next ones digit. On the other hand, the tens digit is not driven. In fact, the fifth tooth row 30a can no longer drive the tooth row 21b of the second display mobile unit 20 because it faces a missing, removed, or non-formed tooth. Furthermore, the tooth row 11c of the first display mobile unit 10 cannot drive the sixth tooth row 40a of the second command mobile unit 40 because a tooth of the tooth row 11c is missing, removed, or non-formed. Therefore, the second command mobile unit 40 and the second display mobile unit 20, more specifically the second display disk 22, remain in their positions.

[0164] In this case, as shown in FIGS. 13 and 16, only the first display mobile unit 10 is driven.

[0165] In the first stage of actuation of the first arm 81, under the influence of the rotation of the first display mobile unit 10, the first arm 81 is actuated in a first rotational direction and moves up the teeth of the tooth row 11b or 11c. As it rotates, the first arm 81 is equipped with an elastic return element 84 via an interaction means 83 or 83'. More specifically, the third contact area 83c or 83c' abuts the second arm 82, which is fixed in place, and the location where the first arm 81 abuts the second contact area 83b or 83b' is movable, so that the interaction means 83 rotates and translates in the first direction of movement within the groove 85.

[0166] In a second phase of actuation of the first arm 81, following the surmounting of the apex of the tooth of tooth row 11b or 11c, the first arm 81 is actuated in a second direction of rotation by the effect of the re-equipping of the elastic return element 84 via the interaction means 83 or 83' and descends the tooth of tooth row 11b or 11c, where the interaction means 83 or 83' rotates and translates in a second direction of movement opposite to the first direction of movement.

[0167] This driving principle also applies to the other jumps from "03" to "09", as well as the jumps from "12" to "13" to "19", and from "22" to "23" to "29".

[0168] As can be seen from Figures 5 and 6 and as described above with reference to Figure 8, the teeth of the fifth tooth row are preferably clipped. Indeed, clipping the ends of tooth row 30a is particularly necessary to allow tooth row 30a to cooperate with tooth rows 11b and 21b only on the centerline passing through axes A1 and A2, so that there is no risk of tooth row 30a moving away from the centerline and interfering with tooth rows 11b and 21b.

[0169] Thanks to the above solution, the drive is realized by two separate command mobile units having substantially the same dimensions as the two gears 11 and 21 of the two display mobile units, thus advantageously reducing the overall dimensions in plan while providing some flexibility in the arrangement of the display mobile units and the order of display.

[0170] These solutions also allow greater freedom not only in terms of the placement of the date display on the dial, but also in terms of the dimensions of the display disc and the quality of the date display.

[0171] These solutions involve not one large command mobile unit, but two separate command mobile units each taking the form of a small gear that is equivalent or substantially equivalent in format to the gear fixedly attached to the tens disc and / or the gear fixedly attached to the units disc.

[0172] The proposed indexing device advantageously makes it possible to employ only one return element adapted to return two arms or levers that can function independently of one another or simultaneously, thus allowing this type of device to successfully solve the problem of fluctuations in the movement's energy consumption linked to the simultaneous or asynchronous driving of two "grande date" mobile units.

[0173] Thanks to the solution of the present invention, the energy consumption of the movement when driving the "Grande Date" is the same or substantially the same whether one or two display mobile units are to be driven. To achieve this, the interaction means arranged between the elastic return element and the two arms that index the two display mobile units may be adapted to impart substantially identical movements to the ends of the elastic return means in both cases in a direction perpendicular or substantially perpendicular to the center line passing through the axes A1 and A2. Figures 11 and 13 illustrate the means moving a first amount in a direction perpendicular or substantially perpendicular to the center line passing through the axes A1 and A2 due to the movement of the first or second arm. Figure 12 illustrates the means moving a second amount in a direction perpendicular or substantially perpendicular to the center line passing through the axes A1 and A2 due to the simultaneous movement of the first or second arm. In the indexing device shown in Figures 11, 12, and 13, the first and second amplitudes are particularly small so that the difference between these two amplitudes does not significantly affect the energy consumption of the movement. For this reason, the energy consumption required to drive the "Grande Date" mechanism remains the same or substantially the same whether one or two display mobile units are to be driven, and is preferably negligible compared to the energy consumed by the watch over a 24-hour period.

[0174] Of course, it is entirely possible to adapt the first and / or second arms and / or interaction means so that the second amplitude of their movement in a direction perpendicular or substantially perpendicular to the center line passing through the axes A1 and A2 is equal to the first amplitude of their movement in a direction perpendicular or substantially perpendicular to the center line passing through the axes A1 and A2. This type of adaptation is particularly preferred when the stiffness and / or preload of the spring is increased, in particular for the purpose of ensuring the function of the indexing device. In this case, the energy required to drive the "grande date" mechanism remains the same or substantially the same whether one or two display mobile units are to be driven.

[0175] Of course, it is entirely possible to adapt the first and / or second arm and / or interaction means in such a way that the amplitude of the movement of the interaction means in a direction perpendicular or substantially perpendicular to a centre line passing through the axes A1 and A2 varies depending on the arm or arms that are actuated, in particular depending on the number of arms that are actuated, so that the force transmitted to the arms may vary in particular according to the number of arms that are actuated or depending on which arms are actuated.

[0176] The watch mobile indexing device solution may also be used in other devices employing multiple indexing arms, such as day-date calendars, annual or semi-permanent or perpetual date calendars, or chronograph counting chains.

[0177] The clock mobile indexing device solution may also be used in devices in which, for example, the arm acts as a mobile unit brake, clutch clamp or play compensation clamp. These devices may also be equivalent to an indexing system.

[0178] None of the identified prior art discloses an indexing device employing two levers or lever beaks, the height of which is substantially the same whatever the number of beaks actuated, and which can be actuated independently of each other or simultaneously in cooperation with a single return element. More specifically, none of the identified prior art discloses an indexing device of this type for a "grande date" mechanism.

[0179] In this specification, "jumper" preferably means a position indexing device including a beak cooperating with a tooth row, and in particular with a cavity between two consecutive teeth of the tooth row, to define at least one index position of the mobile unit, the beak being biased into the cavity by an elastic element.

[0180] As used herein, "dentition" preferably means a set of one or more teeth.

[0181] In this specification, "mobile unit" preferably means an element that is rotatable about an axis and that allows for at least one complete rotation about the axis. The element may include several parts that are fixedly attached to each other in rotation about the axis. The mobile unit advantageously includes at least one toothing that is adapted to allow rotational driving of the mobile unit about the axis, in particular by meshing with other toothings external to the mobile unit. [Explanation of symbols]

[0182] 10. First Display Mobile Unit 11b First dentition 11c Second dentition 13 numbers 20 Second Display Mobile Unit 21b Third tooth row 21c 4th dentition 23 numbers 30 1st Commando Mobile 30a 5th tooth row 40 2nd Commando Mobile 40a 6th tooth row 80 Indexing device 81 First Arm 82 Second Arm 83, 83' interaction means 84 Elastic return element 85 Groove 86 pins 89 Cam surface 90 Drive mechanism 99 frames 100 Date display

Claims

1. 1. An apparatus (100) for displaying a time or time-derived indication, comprising: A first tooth row (11b), a second tooth row (11c), and the time or derived from the time a first display mobile unit (10) including a first disk (12) having a number (13) intended to show the units digit of the indication; The third tooth row (21b), the fourth tooth row (21c), and the time or derived from the time a second display mobile unit (20) including a second disk (22) having a number (23) intended to show the tens digit of the indication; A drive mechanism (90) for driving the first and second mobile units, a first command mobile unit (30) including a fifth row of teeth (30a) adapted to cooperate by meshing with the first row of teeth and the third row of teeth; a second command mobile unit (40) including a sixth tooth row (40a) adapted to cooperate by meshing with the second tooth row and the fourth tooth row; a mechanism (90) including: A display device comprising:

2. the first, third, and fifth rows of teeth have the same first diameter, and / or the second, fourth, and sixth rows of teeth have the same second diameter; The display device according to claim 1 .

3. the first and second diameters are the same; The display device according to claim 2 .

4. The first command mobile unit (30) and the second command mobile unit (40) are arranged coaxially. The display device according to claim 1 .

5. The drive mechanism (90) includes a drive gear (60) including a seventh tooth row (61) that directly or indirectly drives the first command mobile unit; The display device according to claim 1 .

6. the second command mobile unit is adapted to be driven by the first display mobile unit and / or the second display mobile unit; The display device according to claim 1 .

7. the drive mechanism (90) includes an intermediate mobile unit (50) that cooperates by meshing with the seventh tooth row of the drive gear (60) and the fifth tooth row of the first command mobile unit (30); and / or the drive mechanism (90) includes a correction mobile unit (70) that is adapted to directly or indirectly actuate the fifth tooth row of the first command mobile unit (30); The display device according to claim 5 .

8. The drive mechanism (90) is of an instantaneous jump type, a semi-instantaneous jump type, or a drag type. The display device according to claim 1 .

9. The first tooth row (11b) includes nine teeth, the second tooth row (11c) includes two teeth, the third tooth row (21b) includes four teeth, and the fourth tooth row (21c) includes six teeth. The display device according to claim 1 .

10. The first tooth row (11b) includes 9 teeth, the second tooth row (11c) includes 2 teeth, the third tooth row (21b) includes 7 teeth, and the fourth tooth row (21c) includes 8 teeth. The display device according to claim 1 .

11. the first disc contains the sequence of digits "0, 1, 2, 3, 4, 5, 6, 7, 8, 9" and / or the second disc contains the sequence of digits "0, 0, 1, 1, 1, 2, 2, 2, 3, 3", The display device according to claim 1 .

12. the device for displaying a time or time-derived indication is a date display device, the first disc being a ones disc and the second disc being a tens disc; The display device according to claim 1 .

13. A timepiece movement (110) comprising a display device (100) according to any one of claims 1 to 12.

14. A timepiece (120) comprising a display device (100) according to any one of claims 1 to 12 and / or a timepiece movement (110) according to claim 13.

15. A small watch (120) comprising a display device (100) described in any one of claims 1 to 12, and / or a watch movement (110) described in claim 13.

16. A method for operating a display device (100) according to any one of claims 1 to 12, or a clock movement (110) according to claim 13, or a clock (120) according to claim 14, or a miniature clock (120) according to claim 15, comprising: The first command mobile unit (30) drives the first display mobile unit (10), and / or At the same time, the first command mobile unit (30) drives the first display mobile unit (10), and the first display mobile unit (10) drives the second display mobile unit (20) via the second command mobile unit (40); and / or the first command mobile unit (30) driving the second display mobile unit (20); and / or At the same time, the first command mobile unit (30) drives the second display mobile unit (20), and the second display mobile unit (20) drives the first display mobile unit (10) via the second command mobile unit (40); A method comprising:

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