Clock calendar system

Abstract

To provide an instantaneous-jump clock calendar system that ensures reliability and makes it possible to avoid limitations in architecture and structure.SOLUTION: The instantaneous-jump clock calendar system includes: an energy accumulator and a cam; an energy accumulation and restoration device; a date movable member; a month movable member 2; a first element 7 for indexing the date movable member; a second element 8 for indexing the month movable member 2; a movable member 3 for driving the date movable member by restoring energy from an energy accumulator 4; and an element 6b configured to drive the month movable member by restoring energy from the energy accumulator. The element 6b for driving the month movable member is arranged and / or configured to restrict movement of the month movable member after driving thereof.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a clock calendar system. The present invention also relates to a clock movement including such a clock calendar system. The present invention further relates to a clock including such a clock movement or such a clock calendar system. The present invention further relates to a method for operating such a clock calendar system or such a clock movement or such a clock. The present invention further relates to an indicator moving part, in particular a month indicator moving part, of a clock calendar system. [Background technology]

[0002] Perfect calendars are well known in horology. Non-Patent Document 1, in particular, contains numerous examples of perfect calendars known since the 1950s. Non-Patent Document 1, among other things, includes a description of a Vacheron Constantin calendar plate with four indications characteristic of the period, and a 31-tooth date movement located in the center of the movement. The calendar plate is periodically driven by a driving pawl that completes a full rotation in 24 hours through the rotation of an hour wheel, which itself is driven by the driving element of the basic movement. The month movement is updated once a month by the influence of a pawl carried by an intermediate movement similar or identical to the date movement, which meshes with the date movement. Whether it is the date or month indication, the indication is driven in a "drag" manner, i.e., the indication is driven over a period of minutes or hours. The rotation speed of the driving pawl is constant and corresponds to the speed of the 24-hour movement to which the pawl is fixed, which meshes with the hour wheel. The date and month indications will therefore remain the same for minutes or even hours until the jumpers on the date and month moving parts restore energy by reindexing these parts. Furthermore, the date and month indications may become misaligned over such a time span.

[0003] Patent document 1 discloses a movable tooth of the date moving element that is elastically biased against a month programming cam arranged concentrically with the date moving element to provide a drag-jump annual calendar. The kinematic chain of the date moving element and the kinematic chain connecting the date moving element to the moving element supporting the month programming cam are particularly long and complex. The chain introduces a certain number of steps, which, among other things, contradicts the objective of miniaturizing the calendar and the movement incorporating it. Furthermore, such a chain is energy-hungry and therefore not conducive to the implementation of a complete calendar with instantaneous jumps.

[0004] Patent Document 2 discloses an instantaneous jump perpetual calendar that can take the form of a complete calendar. To this end, the calendar includes a month programming cam eccentric to the date moving part and a spiral calendar cam. The structure is particularly complex, as these various cams are designed to cooperate with several levers. In particular, the month programming cam is designed to position a month lever connected to a rack designed to drive a lever equipped with a ratchet wheel, and the ratchet wheel is designed to operate the teeth of the date moving part.

[0005] Patent document 3 discloses a calendar provided with a desmodromic system, which includes a month programming cam cooperating with a cam follower, the cam follower designed to allow or prohibit the retraction of a movable tooth mounted on the date moving part. Since the month programming cam is concentric with the date moving part, the cam follower must establish a connection between the month cam and the tooth movably or movably mounted on the date moving part. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Swiss Patent Application Publication No. 685585 [Patent Document 2] European Patent Application Publication No. 1734419 [Patent Document 3] European Patent Application Publication No. 3567438 [Non-patent literature]

[0007] [Non-Patent Document 1] "Modern Calendar Small Clocks (Les montres calendriers modernes)" by B. Humbert Summary of the Invention [Problem to be solved by the invention]

[0008] The object of the present invention is therefore to provide a clock drive device which allows an improvement over devices known from the prior art, in particular the invention proposes a reliable and simple system as an alternative to existing systems, making it possible to avoid architectural and structural limitations. [Means for solving the problem]

[0009] According to a first aspect of the invention, the objective is defined by the following proposition:

[0010] 1. An energy storage and recovery device including an energy accumulator (4) and a cam (33); Date movement part (1), Moon moving part (2), a first element (7) for indexing the date moving part (1); a second element (8) for indexing the lunar moving part (2); a moving part (3) that drives the date moving part by recovering energy from the energy accumulator (4); and an element (6b) for restoring energy from the energy store (4) to drive the lunar moving part; An instantaneous jump clock calendar system (100) comprising: the element (6b) driving the lunar moving part is arranged and / or configured to limit the movement of the lunar moving part after the driving of the lunar moving part; Instant Jump Clock Calendar System (100).

[0011] 2. The second indexing element (8) of the month moving part (2) generates a torque that holds the month moving part (2) with a tension that is 2 times smaller or 1.5 times smaller than the torque that the first indexing element (7) of the date moving part (1) generates to hold the date moving part (1) in its position. The clock-calendar system (100) according to proposal 1.

[0012] 3. The first indexing element is a jumper (7) which cooperates with a tooth (1a) of the date moving part; A clock-calendar system (100) according to proposal 1 or 2.

[0013] 4. The second indexing element is a jumper (8) which cooperates with a tooth (2a) of the lunar mobile part; A clock-calendar system (100) according to any one of proposals 1 to 3.

[0014] 5. The drive moving part (3) comprises a first pawl (31), such as a pin, adapted to cooperate through contact with the tooth (1a) of the date moving part; A clock-calendar system (100) according to any one of proposals 1 to 4.

[0015] 6. The drive moving part (3) includes a second tooth (32) adapted to cooperate through contact with the additional tooth (12b) of the date moving part; A clock-calendar system (100) according to any one of proposals 1 to 5.

[0016] 7. The driving movable part (3) includes the cam (33). A clock-calendar system (100) according to any one of proposals 1 to 6.

[0017] 8. The date moving part (1) rotates around a first axis (A1), the month moving part (2) rotates around a second axis (A2), and the drive moving part (3) rotates around a third axis (A3), and the first axis (A1), the second axis (A2), and the third axis (A3) are separate. A clock-calendar system (100) according to any one of proposals 1 to 7.

[0018] 9. The first axis (A1) is at the center of the calendar system (100), and / or at the center of the clock movement (200), and / or at the center of the clock (300); The clock-calendar system (100) according to proposal 8.

[0019] 10. The element (6b) driving the lunar moving part comprises a third claw (6b) adapted to cooperate through contact with the tooth (2a) of the lunar moving part; A clock-calendar system (100) according to any one of proposals 1 to 9.

[0020] 11. The element (6b) that drives the lunar moving part comprises a first surface (61b) that forms an abutment for the lunar moving part (2), the surface (61b) being adapted to cooperate with a second surface (21a) of the lunar moving part (2) to limit the movement of the lunar moving part (2); A clock-calendar system (100) according to any one of proposals 1 to 10.

[0021] 12. The system comprises: Day of the week moving part (5), a third element (9) for determining the day of the week moving part (5); a third element (38) for restoring energy from the energy storage (4) to drive the day of the week moving part (5); Including, A clock-calendar system (100) according to any one of proposals 1 to 11.

[0022] 13. The third element (38) driving the day moving part is adapted and / or configured to limit the movement of the day moving part after the driving of the day moving part. A clock-calendar system (100) according to any one of proposals 1 to 12.

[0023] 14. The system is a simple or annual or semi-perpetual or perpetual calendar system; A clock-calendar system (100) according to any one of proposals 1 to 13.

[0024] 15. A clock movement (200) comprising a system according to any one of suggestions 1 to 14.

[0025] 16. A timepiece (300), in particular a wristwatch, comprising a system (100) according to any one of suggestions 1 to 14 and / or a timepiece movement according to suggestion 15.

[0026] According to a second aspect of the invention, the objective is defined by the following proposition.

[0027] 17. A clock calendar system (100) comprising: a date movement (1) pivoted around a first axis (A1); a first element (32), such as a finger, that drives the date moving part; a second element (12) for driving the date moving part, for example including a tooth (12a) for driving the date moving part, said second driving element (12) being mounted on said date moving part (1) so as to be movable between a retracted position and a driving position; ) , and a lunar cam (22) pivoted about a second axis (A2); Including, the month cam (22) is adapted to cooperate with the second element (12) driving the date moving part so as to allow or prevent the second element (12) driving the date moving part to move backward depending on the position of the month cam (22); the first and second axes are separate; Clock calendar system (100).

[0028] 18. The moon cam (22) is At least one first position of the month cam (22) allows the retraction of the second element (12) driving the date moving part through the action of the first element (32) driving the date moving part, and through direct contact of the month cam (22) with the second element (12) driving the date moving part, at least one second position of the month cam (22) prevents the second element (12) driving the date moving part from moving back through the action of the first element (32) driving the date moving part; It is adapted to A clock-calendar system (100) according to proposal 17.

[0029] 19. The clock calendar system (100) includes a month display member, and the month display member and the month cam (22) form a single part (24). A clock-calendar system (100) according to proposal 17 or 18.

[0030] 20. The second element (12) that drives the date moving part includes a lever that is pivoted on the date moving part (1) around a third axis (A12). A clock-calendar system (100) according to any one of proposals 17 to 19.

[0031] 21. The amplitude of the pivoting of the lever 12 around the third axis (A12) is approximately 7° or approximately 0.5 mm at the height of the structure (12b) of the second element (12) that drives the date movement, such as the pin (12b) that is in contact with the month cam (22), respectively. A clock calendar system (100) according to proposal 20.

[0032] 22. The clock calendar system (100) a first element (11a), such as a pin, that limits the movement of the second element (12) that drives the date moving part (1) relative to the date moving part; and a second element (12c), such as an aperture, that limits the movement of the second element (12) that drives the date moving part relative to the date moving part (1); Including, the first and second restriction elements cooperate with each other; A clock-calendar system (100) according to any one of proposals 17 to 21.

[0033] 23. The clock calendar system (100) is an annual, semi-perpetual or perpetual calendar system; A clock-calendar system (100) according to any one of proposals 17 to 22.

[0034] 24. The clock calendar system (100) includes an energy storage and recovery device including an energy accumulator (4) and a cam (33) to form an instantaneous jump calendar system. A clock-calendar system (100) according to any one of proposals 17 to 23.

[0035] 25. The timepiece calendar system (100) includes a moving part (3) that drives the date moving part (1), and the driving moving part includes the first element (32) that drives the date moving part (1) and a third element (31) that drives the date moving part (1). A clock-calendar system (100) according to any one of proposals 17 to 24.

[0036] 26. The clock calendar system (100) includes the cam (33). A clock-calendar system (100) according to proposals 24 and 25.

[0037] 27. The moving part (3) that drives the date moving part (1) is pivoted about a third axis (A3) that is separate from the first axis (A1) and the second axis (A2), in particular parallel to the first axis (A1) and the second axis (A2). A clock-calendar system (100) according to any one of proposals 17 to 26.

[0038] 28. The system comprises: a third element (31), such as a finger or pin, that drives the date moving part; a fourth element (1a) for driving the date moving element, for example including a tooth (1a) for driving the date moving element, in particular an external tooth (1a) for driving the date moving element; Including, A clock-calendar system (100) according to any one of proposals 17 to 27.

[0039] 29. The system includes a frame (99), and the first and second axes are fixed axes relative to the frame (99). A clock-calendar system (100) according to any one of proposals 17 to 28.

[0040] 30. The system is arranged so that the second element (12) driving the date moving part is retractable. A clock-calendar system (100) according to any one of proposals 17 to 29.

[0041] 31. The system is arranged so that the second element (12) driving the date moving part acts directly in contact with the month cam (22). A clock-calendar system (100) according to any one of proposals 17 to 30.

[0042] 32. The system comprises: A moon indicator disc (23), The moon cam (22), A lunar moving part (2) including: The lunar indicator disk and the lunar cam are formed into an integrally molded assembly obtained by machining the whole from the block, or by fixing the lunar indicator disk and the lunar cam, in particular by adhesion and / or welding and / or brazing. and / or The lunar cam has an annular shape. and / or The indicator disk (23) is inscribed in a first cylinder having a diameter D1, the cam (22) is inscribed in a second cylinder having a diameter D2, the cam has an opening (221) in which a third cylinder having a diameter D3 can be inscribed, and the diameters D1, D2, D3 are D2 < D1, in particular D2 < 0.9×D1, and D2 > D3, in particular D2 > D3 > 0.5×D2, in particular D2 > D3 > 0.8×D2. The clock calendar system (100) according to any one of Proposals 17 to 31.

[0043] 33. A clock movement (200) comprising the system according to any one of Proposals 17 to 32.

[0044] 34. A clock (300), particularly a wristwatch, comprising the system (100) according to any one of Proposals 17 to 32, and / or the clock movement according to Proposal 33.

[0045] 35. A method of operating the clock calendar system (100) according to any one of Proposals 17 to 32, or the clock movement (200) according to Proposal 33, or the clock (300) according to Proposal 34, comprising positioning the lunar cam (22) in a first position so as to drive the date movable part, and causing the first element (32) for driving the date movable part to act on the second element (12) for driving the date movable part. Position the month cam (22) in the second position so as to retract the second element (12) that drives the date movable part without driving the date movable part, and cause the first element (32) that drives the date movable part to act on the second element (12) that drives the date movable part. including the method.

[0046] 36. An indicator movable part (2), particularly a month indicator movable part (2) of a clock calendar system (100), wherein the indicator movable part (2) axis (A2), indicator disk (23), and cam (22), including The indicator disk and the cam form an integrally molded assembly obtained by machining the whole from the block or by fixing the indicator disk and the cam, particularly by adhesion and / or welding and / or brazing. and / or The cam has an annular shape. and / or The indicator disk (23) is inscribed in a first cylinder having a diameter D1, the cam (22) is inscribed in a second cylinder having a diameter D2, the cam has an opening (221) in which a third cylinder having a diameter D3 can be inscribed, and the diameters D1, D2, D3 D2 < D1, particularly D2 < 0.9×D1, and D2 > D3, particularly D2 > D3 > 0.5×D2, particularly D2 > D3 > 0.8×D2, are made such that indicator movable part (2).

[0047] Unless there is a technical or logical incompatibility, any object according to the first aspect of the present invention can be combined with any object according to the second aspect of the present invention.

[0048] The accompanying drawings illustrate an embodiment of a clock according to the present invention as an example.

Brief Description of the Drawings

[0049] [Figure 1] FIG. 1 is a diagram of an embodiment of a timepiece according to the present invention. [Figure 2] FIG. 2 is a diagram of the calendar system used in this embodiment of the timepiece according to the invention. [Figure 3] FIG. 3 is a diagram of the calendar driving system used in this embodiment of the timepiece according to the invention. [Figure 4] FIG. 4 is an exploded perspective view of the drive mechanism used in this embodiment of the timepiece according to the present invention. [Figure 5] FIG. 5 is an axial cross-sectional view of the moon moving part used in this embodiment of the timepiece according to the present invention. [Figure 6] FIG. 6 is a diagram of the calendar system for April 30th, just before midnight. [Figure 7] FIG. 7 is a diagram of a calendar system in the first jump stage as the display jumps from April 30th to May 1st. [Figure 8] FIG. 8 is a detailed view of the calendar system in the configuration of FIG. 7, showing in detail the interaction of the date and month moving parts. [Figure 9] FIG. 9 is a diagram of the calendar system in the second jump stage as the display jumps from April 30th to May 1st. [Figure 10] FIG. 10 is a diagram of the calendar system just before the display jumps from April 30th to May 1st. [Figure 11] FIG. 11 is a diagram of a calendar system in the first jump stage as the display jumps from May 30th to May 31st. [Figure 12] FIG. 12 is a detailed view of the calendar system in the configuration of FIG. 11, showing in detail the interaction of the date and month moving parts. [Figure 13] FIG. 13 is a diagram of the calendar system in the second jump stage as the display jumps from May 30th to May 31st. DETAILED DESCRIPTION OF THE INVENTION

[0050] An embodiment of the watch will now be described with reference to Figures 1 to 13.

[0051] The timepiece 300 is for example a small timepiece, in particular a wristwatch, and includes a timepiece movement 200 that is intended to be mounted in a watch case or casing to protect it from the external environment.

[0052] The watch movement 200 is a mechanical movement, in particular an automatic movement, or a hybrid movement or an electronic movement.

[0053] The clock movement 200 includes a clock calendar system 100. The clock calendar system 100 is preferably an instantaneous jump system. The calendar system may be a simple, annual, semi-perpetual or perpetual calendar system.

[0054] According to a first aspect, the clock calendar system 100 comprises: an energy storage and recovery device comprising an energy accumulator 4 and a cam 33; - Date movement 1, - Moon moving part 2, - First element 7 that determines the date moving part 1 - Second element 8, which determines the lunar moving part 2; - a movement 3 which drives the date movement by recovering energy from an energy accumulator 4; - element 6b, which drives the lunar moving parts by recovering energy from the energy store 4; Includes.

[0055] The element 6b that drives the lunar moving part is arranged and / or configured to limit the movement of the lunar moving part after driving it.

[0056] According to a second aspect, the clock calendar system 100 includes: - a date movement 1, pivoted around axis A1, - an element 32 that drives the date movement, such as a lug 32; a drive element 12 for driving the date moving part, for example including a tooth 12a for driving the date moving part, mounted on the date moving part 1 so as to be movable between a retracted position and a drive position, and - a lunar cam 22, pivoted about the axis A2, wherein the month cam 22 is adapted to cooperate with the element 12 driving the date movable part so as to allow or prevent retraction of the element 12 driving the date movable part, in particular through the action of the element 32 driving the date movable part, depending on the position of the month cam 22, and the first and second axes A1 and A2 are distinct.

[0057] The Moon Cam 22 is advantageously - at least one first position of the month cam 22 allows the retraction of the element 12 driving the date moving part through the action of the element 32 driving the date moving part, and - through direct contact between the month cam 22 and the element 12 driving the date moving part, at least one second position of the month cam 22 prevents the element 12 driving the date moving part from retracting through the action of the element 32 driving the date moving part, It is made to be like this.

[0058] In this embodiment, the date moving part 1 is arranged around axis A1 of the calendar system 100, or of the calendar module, or of the center of the movement 200 containing the calendar system 100. As shown in Figures 1 and 2, the date moving part 1 comprises a wheel 11 with 31 teeth 1a and a lever 12 mounted on wheel 11 so as to be rotatable or movable about axis A12. Lever 12 constitutes a drive element 12 mounted on date moving part 1 so as to be movable between a retracted position (shown in Figures 11 and 12) and a drive position (shown in particular in Figures 7 and 8). The amplitude of the pivoting of lever 12 around axis A12 is approximately 7°, or approximately 0.5 mm, at the height of a structure 12b of lever 12, such as pin 12b, intended to come into contact with the month cam. To define this amplitude, the system preferably: an element 11a, such as a pin, that limits the movement of the lever 12 relative to the date movement 1, and an element 12c, such as an aperture, that limits the movement of the lever 12 relative to the date movement 1; These limiting elements 11 a and 12 c cooperate with each other to limit the movement of the lever 12 relative to the gear 11 .

[0059] The lever 12 is designed to cooperate directly with the lunar moving part 2, which is pivoted about the axis A2, as shown in Figure 2, and in particular with a lunar programming cam 22, which is mounted or fixed to the lunar pinion 21. The lunar cam 22 comprises a circular portion 22a and radial projections 22b, each of which is configured and / or adapted to serve as an abutment for the structure 12b of the lever 12.

[0060] The direct cooperation of lever 12 and month cam 22, in particular the contact between pin 12b and projection 22b, allows the calendar to be driven an additional step at the end of months of 30 days and, in some cases, months of fewer than 30 days (i.e., the month of February), as will be explained below.

[0061] Lever 12 is advantageously adapted so that structure 12b is moved substantially radially at right angles to axis A1 or so as to form an angle of less than 45° with a direction radially at right angles to axis A1 during retraction of lever 12.

[0062] The moving parts 1 and 2 are driven instantaneously, in particular due to the influence of the driving moving part 3. The moving part 3 pivots about an axis A3. The moving part 3 completes one revolution around its axis A3 every 24 hours. The moving part 3 comprises an element 31, such as a pawl or pin 31, designed to drive the moving part 1 by one angular step every 24 hours through contact cooperation with one of the teeth 1a of the gear 11. The moving part 3 also comprises a driving element 32, designed to exert an action on the lever 12, in particular on the tooth 12a of the lever, at the end of each month. As will be explained below, this action is - At the end of the big month, pull back lever 12, and - At the end of the small moon, drive the moving part 1, It has an effect.

[0063] The jump is instantaneous due to an energy accumulator 4 designed to cooperate with a cam 33 of the moving part 3. The accumulator 4 comprises a lever 41 biased against the cam 33 by a spring 42. The lever 41 and the spring 42 may be obtained by permanently assembling several parts or by being manufactured in one piece (by molding a single block of material) to form a single component 4. The cooperation between the lever 41 and the cam 33 is preferably achieved via a roller 43 mounted in a rotatable manner on a portion of the lever 41, in particular at end level.

[0064] The moving part 3 also includes a gear 34 that allows it to be connected, notably by meshing, to the basic movement via a suitable kinematic chain, in particular an hour wheel (not shown). The pawls 31, 32 and the cam 33 are advantageously connected to said gear 34 via a one-way connection device 35. This device includes an elastic pawl 36 that connects the gear 34 to a disk 37 on which the pawls 31, 32 are mounted. In particular, the elastic pawl 36 acts on the structure of the gear 34 and on the structure of the disk 37 so that the effect of a counterclockwise rotation of the gear 34 causes a counterclockwise rotation of the elements 31, 32, 33. When the gear 34 is driven clockwise, the elements 31, 32, 33 are not driven and remain in their position due to the effect of a lever 41 and its spring 42 acting on the cam 33.

[0065] In the embodiment shown, the disk 37 also includes a guide member 38, such as a pawl 38, designed to drive the day moving part 5 by one angular step every 24 hours through contact cooperation with one of the seven teeth 5a of the gear or of the star gear 51.

[0066] For this reason, the movable part 3 is - Move the date movement 1 once per day or every 24 hours. - the day of the week moving part 5 is moved once per day or once per 24 hours, and - Lunar moving part 2, once per month, It is designed to operate instantly. The month moving part 2 is connected to the date moving part 1 by a particularly simple kinematic chain consisting of an intermediate moving part 6 including a gear 61 with 31 teeth 6a that meshes with the 31 teeth 1a of the gear 11 and a pawl 6b designed to drive the moving part 2 by one angular step through cooperation by contact with one of the teeth 2a of the pinion 21 fixed to the month cam 22.

[0067] Each of the moving parts 1, 2, 5 is preferably indexed into position by a respective indexing element or jumper 7, 8, 9, which makes it possible to keep the date, day and month indicator members within the display. Jumper 7 cooperates with tooth 1a of the date moving part. Jumper 8 cooperates with tooth 2a of the month moving part. Jumper 9 cooperates with tooth 51a of a wheel or star wheel 51.

[0068] As shown in FIG. 1, the date indicator member may be a central hand 13, and the month and day indicator members may be discs 23 and 53.

[0069] The cam 22 and the disk 23 preferably constitute a single piece 24. In other words, the circular portion 22a and the radial protrusion 22b are manufactured or formed directly below the disk 23, on the side opposite the moon indication. The circular portion 22a is optional; therefore, only the radial protrusion 22b may be manufactured or formed directly on the disk 23.

[0070] Furthermore, the annual calendar system an intermediate movable part 6; - cam 22 and month indicator member 23 simply reduced to the same part 24 It has a kinematic chain consisting only of a shaft and is particularly simple and compact.

[0071] In an alternative embodiment, it is also possible to foresee that the claw 6b is mounted directly on the moving part 1, so that the moving part 1 can drive the lunar moving part 2 directly, without the intermediate moving part 6.

[0072] This arrangement is made possible by the fact that the cam 22, which is pivoted about axis A2, is eccentric with respect to the date moving element 1, which is pivoted about axis A1. In other words, the cam 22 is off-axis or eccentric with respect to the date moving element 1, on which the lever 12 designed to cooperate with the cam 22 is movably or movably mounted, the advantage of which is that the date indicator and the month indicator can coexist in the simplest possible way.

[0073] Furthermore, the jumps of these elements are preferably instantaneous and synchronized thanks to the energy accumulator 4, the moving element 3, and the pawl 6b. As mentioned above, the pawl 6b is adapted and / or configured to limit the movement of the lunar moving element 2 after its activation. For this purpose, the pawl 6b is configured and / or adapted to form an abutment for the pinion 21 after the date change. For this purpose, the pawl 6b includes a surface 61b that forms an abutment for the lunar moving element 2. Indeed, after activation of a tooth 2a of the teeth 21, the pawl 6b is immobilized for 24 hours in a position where, in particular, the surface 61b forms an abutment that limits the movement of the lunar moving element 2 through cooperation with the surface 21a of the lunar moving element 2. For this purpose, the surface 61b forms an abutment for the tooth of the teeth 21, and in particular for the surface 21a of said tooth, that immediately follows the tooth that has just been activated. This operating principle makes it possible to minimize the torque that holds the jumper 8, while preventing any risk of an unintended additional jump of the lunar display element after the date change. This holding torque can be minimized by simplifying the month moving part 2 as much as possible by integrating the cam 22 and the element 23 in the same part 24. Moving part 2 can thus be reduced to two parts: the pinion 21, which is indexed into its position by the jumper 8, and part 24, which integrates the display element 23 and the month programming cam 22. The calendar system can thus be dimensioned so that element 8, which indexes month moving part 2, generates a holding torque for the position of the month profile that is two times smaller or one and a half times smaller than the torque, which holds date moving part 2 in its position, generated by element 7, which indexes date moving part 1.

[0074] In a manner similar to pawl 6b, element 38 driving the day moving part may be adapted and / or configured to limit the movement of the day moving part following driving of the day moving part 5 by one angular step.

[0075] An embodiment of a method for operating the above-mentioned clock calendar system 100, the above-mentioned clock movement 200, or the above-mentioned clock 300 will be described below.

[0076] The method includes the following steps. - actuating the element 32 driving the date moving element on the second element 12 driving the date moving element to position the month cam 22 in a first position and drive the date moving element, said step occurring at the end of the short months (April, June, September, November); and - positioning the month cam 22 in a second position and actuating the element 32 driving the date moving element on the element 12 driving the date moving element so as to move the element 12 driving the date moving element back without driving the date moving element, said step occurring at the end of the long months (January, March, May, July, August, October, December);

[0077] 6 illustrates the time system on April 30th, just before midnight, i.e. just before the calendar indication jump. In this configuration, roller 43 is at apex 33a of cam 33. Energy accumulator 4 is therefore ready to restore the energy stored at midnight to cause rotation of pawls 31, 32, which in this movement are constrained to rotate with cam 33.

[0078] Figure 7 illustrates the calendar system during the first stage of the jump of the calendar indication. Assuming that April is a month containing 30 days, pin 12b is designed to abut against projection 22b of month programming cam 22 due to the action of tooth 32 on tooth 12a, as can be seen in particular in Figure 8. The fact that pin 12b abuts against projection 22b prevents the lever from rotating about axis A12, thus generating a rotation of movable part 1 by one angular step around axis A1.

[0079] 9 illustrates the calendar system during the second phase of the jump of the calendar indication. Pawl 31 drives tooth 1A of wheel 11 so that movable part 1 rotates by one complementary angular step about axis A1. During this phase, movable part 6 also rotates by one angular step about axis A6, whereby pawl 6b drives tooth 2a of movable part 2, thus enabling the rotation of movable part 2, in particular of cam 22 and display member 23, by one angular step.

[0080] During the first phase, pawl 32 exerts a force on jumper 7 until its return spring restores the stored energy. During the second phase, pawl 31 exerts a force on jumper 7 and on jumper 8 (and also on jumper 9 if the calendar system includes a day-of-the-week indicator) until the jumpers restore the stored energy in their respective return springs. As mentioned above, the torque generated by jumper 8 on moving part 2 is two times smaller, or one and a half times smaller, than the torque generated by jumper 7 on moving part 1. Such a choice makes it possible to minimize the energy stored in accumulator 4 and thus minimize the fluctuations in the amplitude of the oscillator of the movement that drives the calendar system. Such a choice is favored due to the fact that the inertia of moving part 2 is minimized, since cam 22 is integrated in member 23 and these elements form a single part 24.

[0081] As mentioned above, to ensure the operation of the calendar system, and in particular to prevent any risk of unintentional additional jumps, pawl 6b is designed to remain in tooth 2a of moving part 2 once a date jump has been performed. In this configuration, pawl 31 is also located in tooth 1a of wheel 11, and roller 43 is located in recess 33b of cam 33.

[0082] 10 illustrates the calendar system for May 1st, just after midnight, i.e. just after the calendar indication jump. Roller 43 is located in recess 33b of cam 33, pawl 6b is located in tooth 2a, so that tooth 2a (the tooth following the one that has just been driven) forms an abutment against which it can abut.

[0083] Figures 11 to 13 illustrate the calendar system during the passage from May 30 to May 31. During the first phase of the calendar indication jump illustrated in Figures 11 and 12, pin 12b is movable against circular portion 22a of month programming cam 22, so that contact between pawl 32 and tooth 12a retracts lever 12 about axis A12. Therefore, moving part 1 is not driven in rotation about axis A1. Only when pawl 31 comes into contact with tooth 1a of gear 11 can moving part 1 be driven by one angular step about axis A1, thus causing a change of date from May 30 to May 31. As mentioned above, circular portion 22a is optional.

[0084] Regardless of the embodiment or variant, the display member 23 is preferably a disk on which at least the abutment portion 22b is machined or mounted (portion 22a is optional in the calendar functionality).

[0085] Regardless of the embodiment or variant, the date display member is preferably a hand 13, which makes it possible to minimize the inertia of the moving part 1. Alternatively, member 13 may take the form of a disc.

[0086] Regardless of the embodiment or variant, the indication of other temporal information is optional. This may mean, for example, a day of the week indication as shown. Additionally or alternatively, there may be, for example, an indication of the phase of the moon. In the particular case of the day of the week indication shown in the drawings, as shown in FIG. 2, the pawl 38 forms the abutment of the pinion 51, in particular of the tooth 5a, after the date has been changed. This operating principle makes it possible to minimize the torque holding the jumper 9, while preventing any risk of an unintentional additional jump of the day of the week display element after the date has been changed.

[0087] Regardless of the embodiment or variant, the month moving part and / or the day moving part may comprise a pinion with a single tooth (as in the case of pinion 21 shown in the figures) or with a double tooth (as in the case of pinion 51 shown in the figures). In the latter case, the doubling of the teeth makes it possible to optimize each set of teeth for its respective function. For example, teeth 5a include tooth 51a comprising a series of slots for optimal cooperation with pawl 38 of moving part 3, and tooth 51b forming a star for optimal cooperation with jumper beak 9.

[0088] Regardless of the embodiment or variant, the movable part 1 (and lever 12) is preferably driven directly by elements 31 and 32, and thus independently of any intermediate lever.

[0089] Regardless of the embodiment or variant, the date moving part 1 is rotatable around a first axis A1, the month moving part 2 is rotatable around a second axis A2, and the drive moving part 3 is rotatable around a third axis A3, and the first axis A1, the second axis A2, and the third axis A3 are preferably separate.

[0090] Regardless of the embodiment or variant, the first axis A1 is preferably at the center of the calendar system 100 and / or the center of the timepiece movement 200 and / or the center of the timepiece 300.

[0091] Regardless of the embodiment or modification, the clock calendar system 100 includes a frame 99, and the first and second axes may be fixed axes with respect to the frame 99. In particular, the date gear 1 may rotate directly on the frame 99, and the month cam may rotate directly on the frame 99.

[0092] Regardless of the embodiment or modification, in the clock calendar system 100, the second element 12 that drives the date movable part may be arranged to be retractable. "Retractable" means that the calendar system does not have a spring that acts in the opposite direction to retract the second date gear driving element 12.

[0093] Regardless of the embodiment or modification, in the clock calendar system 100, the second element 12 that drives the date movable part may be arranged to act directly by contact with the month cam 22.

[0094] Regardless of the embodiment or modification, the movable part 2, especially the month movable part 2, - an indicator disk, especially the month indicator disk 23, and - a cam, especially the month cam 22, includes. The movable part 2 may include any combination of the following features. - The indicator disk and the cam may form an integrally molded assembly obtained by machining the whole from a block or by fixing the month indicator disk and the month cam, especially by adhesion and / or welding and / or brazing. In some embodiments, the indicator disk and the cam may be made of different materials. - The cam may have an annular shape. - The indicator disk 23 may be inscribed in a first cylinder having a diameter D1, the cam 22 may be inscribed in a second cylinder having a diameter D2, and the cam may be an opening 221 in which a third cylinder having a diameter D3 can be inscribed. The diameters D1, D2, D3 are D2 < D1, especially D2 < 0.9×D1, and It is preferable that D2>D3, particularly D2>D3>0.5×D2, particularly D2>D3>0.8×D2. The cam 22 may be an annular lunar cam (a 12-month cam that completes one complete rotation in 12 months). The cam 22, like the other discs of the calendar system, may be arranged to rotate unidirectionally relative to the frame 99 about its own axis A2.

[0095] The date and month indications (and possibly the day of the week and moon phase indications) may be corrected via axes or dedicated correcting mechanisms.

[0096] Throughout this specification, an "instantaneous jump" means a jump of duration preferably of a fraction of a second, typically of the order of about 1 / 100 of a second, or of the order of about 1 / 25 of a second, or of the order of about 1 / 10 of a second.

[0097] In other words, the above solution: - The month indicator is driven instantaneously by the effect of restoring the energy stored by the energy accumulator and the calendar cam, allowing the calendar to be simple, annual or perpetual, making it possible to arrive at the definition of a particularly highly executed perfect calendar. - the month programming cam is eccentric to the date moving element, making it possible to achieve a particularly compact annual or perpetual calendar definition; the cam is advantageously included in the month display element, minimizing the inertia of the month moving element while allowing further improvements in compactness; Therefore, it is excellent.

[0098] The solution is notable in that it is particularly compact thanks to the fact that the month programming cam is eccentric with respect to the date moving part, and further thanks to the fact that the latter is contained within the lunar display member, while the device making it possible to distinguish between major and minor months is further simplified compared to the desmodromic device known from US Pat. No. 5,629,499.

[0099] The solution is simpler than that disclosed in US Pat. No. 5,649,999, thanks to the fact that a tooth or lever movably or movably mounted on the date moving part cooperates directly with a month programming cam that is eccentric (or off-axis) with respect to the date moving part, independent of any cam follower. Such a month programming cam arrangement makes it possible to simplify, and in particular make more compact, the chain connecting the date moving part to the moving part that supports said programming cam, especially with respect to that known from US Pat. No. 5,649,999.

[0100] Of course, in this specification, the expression "an element inscribed within a cylinder having a diameter D" means that the diameter D is the smallest diameter such that the element can be contained within the cylinder. Similarly, in this specification, the expression "a cylinder having a diameter D inscribed within an element" means that the diameter D is the largest diameter such that the cylinder can be contained within the element. [Explanation of symbols]

[0101] 1 Date movement February moving parts 3. Drive moving part 4 Energy Accumulator 5 Day of the week moving part 6b Elements that drive the lunar moving parts 7 First Indexing Element 8 Second indexing element 9 Third Indexing Element 12. Elements that drive the date movement 12a tooth 22 Monthly Cam 23 indicator disc 31 Nails 32 Nails 33 Cam 34 Gears 35 One-way connection device 36 Elastic pawl 37 discs 38 Nails 41 Lever 42 Spring 43 Laura 99 frames 100 Calendar System A1 axis A2 axis A3 axis

Claims

1. an energy storage and recovery device including an energy accumulator (4) and a cam (33); Date movement part (1), Moon moving part (2), a first element (7) for indexing the date moving part (1); a second element (8) for indexing the lunar moving part (2); A moving part (3) that drives the date moving part by recovering energy from the energy accumulator (4), and an element (6b) for recovering energy from the energy store (4) to drive the lunar moving part; An instantaneous jump clock calendar system (100) comprising: the element (6b) driving the lunar moving part is arranged and / or configured to limit the movement of the lunar moving part after the driving of the lunar moving part; Instant jump clock calendar system (100).

2. the second indexing element (8) of the month moving part (2) generates a torque that holds the month moving part (2) with a tension that is 2 times smaller or 1.5 times smaller than the torque that the first indexing element (7) of the date moving part (1) generates to hold the date moving part (1) in its position; The clock-calendar system (100) of claim 1.

3. the first indexing element is a jumper (7) which cooperates with a tooth (1a) of the date moving part; A clock-calendar system (100) according to claim 1 or 2.

4. the second indexing element is a jumper (8) cooperating with a tooth (2a) of the lunar mobile; A clock-calendar system (100) according to any one of claims 1 to 3.

5. the drive moving part (3) comprises a first pawl (31), such as a pin, adapted to cooperate through contact with a tooth (1a) of the date moving part; A clock-calendar system (100) according to any one of claims 1 to 4.

6. The drive moving part (3) includes a second tooth (32) adapted to cooperate through contact with an additional tooth (12b) of the date moving part; A clock-calendar system (100) according to any one of claims 1 to 5.

7. The driving movable part (3) includes the cam (33). A clock-calendar system (100) according to any one of claims 1 to 6.

8. The date moving part (1) rotates around a first axis (A1), the month moving part (2) rotates around a second axis (A2), and the drive moving part (3) rotates around a third axis (A3), and the first axis (A1), the second axis (A2), and the third axis (A3) are separate. A clock-calendar system (100) according to any one of claims 1 to 7.

9. the first axis (A1) is at the center of the calendar system (100) and / or at the center of the timepiece movement (200) and / or at the center of the timepiece (300); The clock-calendar system (100) according to claim 8.

10. the element (6b) driving the lunar moving part comprises a third claw (6b) adapted to cooperate through contact with the tooth (2a) of the lunar moving part; A clock-calendar system (100) according to any one of claims 1 to 9.

11. the element (6b) driving the lunar moving part comprises a first surface (61b) forming an abutment for the lunar moving part (2), said surface (61b) being adapted to cooperate with a second surface (21a) of the lunar moving part (2) to limit the movement of the lunar moving part (2); A clock-calendar system (100) according to any one of claims 1 to 10.

12. The system comprises: Day of the week moving part (5), a third element (9) for determining the day of the week moving part (5); a third element (38) that recovers energy from the energy accumulator (4) to drive the day moving part (5); Including, A clock-calendar system (100) according to any one of claims 1 to 11.

13. the third element (38) driving the day moving part is adapted and / or configured to limit the movement of the day moving part after the driving of the day moving part. A clock-calendar system (100) according to any one of claims 1 to 12.

14. The system is a simple or annual or semi-perpetual or perpetual calendar system, A clock-calendar system (100) according to any one of claims 1 to 13.

15. A timepiece movement (200) comprising a system according to any one of claims 1 to 14.

16. A timepiece (300), in particular a wristwatch, comprising a system (100) according to any one of claims 1 to 14 and / or a timepiece movement according to claim 15.

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