Watch movement comprising mechanism for displaying periods of annual cycle moved in jumps by drive mobile with 31-position

Abstract

To provide a mechanism for correcting ad display mechanism for displaying the periods of an annual cycle driven by a mobile with 31 stable positions of a date display.SOLUTION: A watch movement comprises a date mechanism 50 including a drive mobile 55; a mechanism for displaying the periods of an annual cycle 100 driven in jumps by the drive mobile 55, where the mechanism for displaying the periods of the annual cycle 100 includes an annual cycle train 120 configured to rotate a member for indicating annual cycle periods 110, the annual cycle train 120 including an annual cycle drive wheel 123 kinematically coupled in rotation with an annual cycle correction wheel 124, the annual cycle correction wheel 124 being meshed with the member for indicating annual cycle periods 110; and an annual cycle correction mechanism 400 configured to correct the mechanism for displaying the periods of the annual cycle 100 by rotating a winding stem 410 rotating the annual cycle correction wheel 124 and changing the indexing between the annual cycle drive wheel 123 and the annual cycle correction wheel 124.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The field of the present invention relates to a timekeeping mechanism for displaying, for example, seasons by means of a driving movable object with 31 stable positions that moves by jumping during an annual cycle.

[0002] The present invention also relates to a mechanism for correcting a mechanism for displaying the period of an annual cycle.

[0003] The present invention also relates to a watch movement comprising a mechanism for displaying the period of an annual cycle and a date mechanism.

[0004] The present invention also relates to a timepiece, for example a wristwatch.

Background Art

[0005] The annual cycle, and in particular the mechanism for displaying the period of this annual cycle, enables the display of information related to a given period during the solar annual cycle.

[0006] The mechanism for displaying the period of the annual cycle is generally a mechanism with a jump drive that enables the positioning of an indicator facing the scale or division of a dial. The annual cycle can be divided into several periods corresponding to the scale or division of the dial. However, these jump-type mechanisms for displaying the period of the annual cycle are not very accurate because they cannot convey to the user whether the displayed period is at the beginning or end of the annual cycle.

[0007] For example, when such a mechanism for displaying the period of the annual cycle enables the indication of months or, for example, seasons, the hand indicates the current period (month or season), but does not display more accurate information regarding the time remaining within the current period. As a result, the jump drive in these displays creates a "display error" with respect to the actual situation regarding the current period.

[0008] To overcome this drawback, the document European Patent No. 0397028 provides an annual cycle display mechanism driven by a driving movable member with 31 gears that directly engage with the date wheel. When an appropriate gear ratio is used, the annual cycle display rotates once every 372 steps of the driving movable member. In other words, the annual cycle period display rotates once every complete 12 rotations of the driving movable member, and the driving movable member engaged with the date display rotates completely once per month.

[0009] Thus, when using such a display mechanism, by driving the annual cycle display once per day instead of once per period, it becomes possible to improve the display accuracy of such jump driving.

[0010] However, such a date-driven annual cycle display mechanism requires the user to manually perform up to 372 date corrections, which is time-consuming to set. This is considered an inhuman engineering setting and leaves the user with the impression of a less sophisticated timepiece.

Prior Art Documents

Patent Documents

[0011]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0012] Therefore, in order to address at least one of the aforementioned problems, it is necessary to improve this jump-type mechanism for displaying the annual cycle period driven by a movable member with 31 stable date display positions, and in particular, the mechanism for correcting such a display mechanism.

Means for Solving the Problems

[0013] In this regard, the present invention proposes a watch movement comprising a mechanism for displaying the periods of an annual cycle that operates step by step daily and jumps by a drive movable member with 31 stable positions, and a quick correction mechanism for independently correcting the annual cycle display via the pulling-out position of the watch movement's winding reel.

[0014] The jump drive mechanism for displaying the periods of the annual cycle also has an improved display resolution that can be easily set by the user.

[0015] The present invention more particularly relates to - a winding reel that can assume at least two pulling-out positions relative to a neutral pushing-in position, - a date mechanism comprising a drive movable member with 31 stable positions that operates in steps of one step per day by a regulating wheel train, the drive movable member with 31 stable positions moving the date display, a date mechanism, - a mechanism for displaying the periods of the annual cycle that jumps by a drive movable member with 31 stable positions, comprising a member for indicating the periods of the annual cycle and an annual cycle wheel train configured to rotate a member for indicating the periods of the annual cycle at each step of the drive movable member with 31 stable positions that is directly moved by the drive movable member with 31 stable positions, the annual cycle wheel train comprising an annual cycle drive gear kinematically connected in a rotational state to an annual cycle correction gear, the annual cycle correction gear engaging with a member for indicating the periods of the annual cycle, a mechanism for displaying the periods of the annual cycle, - an annual cycle correction mechanism configured to quickly and independently correct the mechanism for displaying the periods of the annual cycle when the winding reel rotates in the first pulling-out position, the annual cycle correction mechanism rotating the annual cycle correction gear by rotating the winding reel and configured to change the indexing between the annual cycle drive gear and the annual cycle correction gear when the winding reel moves beyond the existing connection range between the annual cycle drive gear and the annual cycle correction gear relates to a watch movement comprising.

[0016] According to the present invention, the mechanism for displaying the period of the annual cycle can be a mechanism for displaying months, weeks, constellations, zodiac signs, mean solar time, running equation of time, Christian holidays, vernal and autumnal equinoxes and summer and winter solstices, climatic seasons, the tilt of the Earth with respect to the sun, Chinese seasons, or even the sidereal period.

[0017] Preferably, the mechanism for displaying the period of the annual cycle is a mechanism for displaying the sidereal period.

[0018] Preferably, the mechanism for displaying the period of the annual cycle is a mechanism for displaying the Chinese seasons.

[0019] In addition to the characteristics described in the previous sections, the watch movement according to the present invention - The annual cycle drive gear kinematically connects in a rotational state with the annual cycle correction gear via a correction star wheel that cooperates with a correction jumper configured to ensure that the correction star wheel is kept in a stable position when the watch movement is operating normally. - The correction star wheel is integrated in a rotational state with the annual cycle correction gear, and the correction jumper is supported by the annual cycle drive gear, or the correction star wheel is integrated in a rotational state with the annual cycle drive gear, and the correction jumper is supported by the annual cycle correction gear. - The correction star wheel has six branches. - By using a winding drum to correct the member for indicating the period of the annual cycle, the indexing between the annual cycle drive gear and the annual cycle correction gear is changed by jumps, and as a result, the member for indicating the period of the annual cycle is corrected by jumps of 30°. - The resulting gear ratio of the annual cycle gear train between the drive movable member with 31 stable positions and the member for indicating the period of the annual cycle is 12, and as a result, the member for indicating the period of the annual cycle makes one complete rotation after the drive movable member with 31 stable positions makes 12 complete rotations. - The mechanism for displaying the period of the annual cycle is a mechanism for displaying seasons, preferably Chinese seasons. The member for indicating the period of the annual cycle includes an annual cycle display wheel that supports the annual cycle period indicator, and the annual cycle display wheel meshes with the annual cycle correction gear. - The date mechanism includes a 24-hour gear that is moved by a speed regulating wheel train. The 24-hour gear includes a finger configured to move the date lever by one degree per day, and operates a drive movable member with 31 stable positions by one step. - The watch movement includes a date correction member configured to operate a drive movement device with 31 stable positions by one step each time the date correction member is actuated by acting on the date lever. It may have one or more complementary characteristics obtained individually from among these, or in any technically possible combination.

[0020] The present invention also relates to a timepiece comprising a watch movement according to the present invention.

[0021] Advantageously, the timepiece is a wristwatch.

[0022] The objects, advantages, and characteristics of the present invention will become apparent from the following detailed description with reference to the following figures.

Brief Description of the Drawings

[0023]

Figure 1

Figure 2

Figure 3

Figure 4

Modes for Carrying Out the Invention

[0024] In all of the figures, common elements have the same reference numerals unless otherwise specified.

[0025] FIG. 1 schematically illustrates a top view of a watch movement 1 according to the present invention, which includes a date mechanism 50 and a mechanism for displaying a period of an annual cycle 100 driven by a jump of a drive movable member 55 with 31 positions of the date mechanism 50.

[0026] FIG. 2 schematically illustrates a view of the watch movement 1 shown in FIG. 1 as seen from below.

[0027] FIG. 3 is a schematic view of a watch movement 1 according to the present invention.

[0028] FIG. 4 schematically illustrates a timepiece 200 including a case 210 that houses a watch movement 1 according to the present invention. For example, the timepiece 200 is a wristwatch.

[0029] The watch movement 1 typically includes a regulating wheel train 10 having a minute movable member, in particular, for driving a time gear, and the regulating wheel train assembly is configured such that the time gear makes a complete revolution in 12 hours.

[0030] The regulating wheel train typically supports a time display, for example, an hour hand 2 (visible in FIG. 4) driven by a spindle of the time gear.

[0031] The watch movement 1 according to the present invention includes a date mechanism 50 kinematically connected to the regulating wheel train 10.

[0032] The date mechanism 50 typically includes a 24-hour gear 52 kinematically connected to a time gear of the regulating wheel train 10 via an intermediate movable member 51 as shown in FIGS. 1 and 2, for example.

[0033] The 24-hour gear 52 supports a finger 53 configured to move the date lever 54 once a day each time the 24-hour gear 52 rotates in cooperation with the date lever 54.

[0034] The date lever 54 includes a first arm portion 54a and a second arm portion 54b extending on both sides of the pivot axis P1. The date lever 54 is actuated by a spring (not shown) that moves the first arm portion 54a toward the finger 53.

[0035] The end of the second arm portion 54b has a lever head 54c that ends with a lever beak 54d configured to cooperate with the tooth portion of the drive movable member 55 having the position 31 of the date mechanism 50.

[0036] Thus, once a day, when the finger 53 comes into contact with the end of the first arm portion 54a, the finger 53 moves the date lever 54. Upon receiving the pressure of the finger 53, the date lever 54 pivots about its pivot axis P1 so that the lever beak 54d contacts the tooth portion of the drive movable member 55 having the position 31 and rotates the drive movable member 55 having the position 31 by only one step.

[0037] At each step, the drive movable member 55 having the position 31 is held in a stable position by the date jumper 56, and the date jumper (not shown) is configured to push the date jumper 56 back toward the tooth portion of the drive movable member 55 having the position 31.

[0038] The drive movable member 55 associated with the position 31 meshes with, for example, an intermediate movable member 151 and a date wheel train 150 including a date display gear 152 having a spindle 153 suitable for receiving the date hand 3 forming, for example, a date indicator (visible in FIG. 4). The date indicator 3 may also have other forms.

[0039] The date mechanism 50 also includes a date correction member 250, such as a push button, that acts on a correction lever 251 having a correction beak 252 at one end configured to start the date lever 54 each time the date correction member 250 is actuated. More specifically, the correction beak 252 presses against the lever head 54c so as to actuate the drive movable member 55 having 31 positions one step via a lever beak 54d that acts on the tooth portion of the drive movable member 55 having 31 positions. Thus, each time the date correction member 250 is actuated, the drive movable member 55 having 31 positions and accordingly the date hand 3 can be corrected one step.

[0040] The watch movement 1 also includes a mechanism for displaying the period of the annual cycle 100 that moves in jumps by the date mechanism 50, more specifically by the drive movable member 55 having 31 positions of the date mechanism 50.

[0041] The mechanism for displaying the period of the annual cycle 100 may be a mechanism for also displaying months, weeks, constellations, zodiac signs, mean time differences, operating mean time differences, Christian holidays, vernal and autumnal equinoxes and summer and winter solstices, climatic seasons, the tilt of the earth with respect to the sun, Chinese seasons, or even sidereal periods.

[0042] Preferably, the mechanism for displaying the period of the annual cycle 100 is a mechanism for also displaying months, seasons, or even Chinese seasons.

[0043] The mechanism for displaying the period of the annual cycle 100 includes a member for indicating the period 110 of the annual cycle.

[0044] In an exemplary representative embodiment, the member for indicating the period 110 of the annual cycle includes an annual cycle display gear 112 (which can be seen in more detail in FIG. 2) having a spindle 113 suitable for receiving a hand 4 that forms, for example, an annual cycle period indicator (visible in FIG. 4).

[0045] According to a modified embodiment, the annual cycle display gear 112 can rotate a disk having an indication, index, or scale corresponding to the period of the annual cycle to be displayed on its upper surface.

[0046] Depending on the desired display type, the disk may be fully or partially visible through an opening appropriately formed in the dial of the timepiece 200.

[0047] When the watch movement 1 is operating normally, the member for indicating the period 110 of the annual cycle is driven by an annual cycle wheel train 120 that is directly moved by a driving movable member 55 having 31 positions.

[0048] In the illustrated example, the driving movable member 55 with 31 positions meshes with the gear 121a of the first intermediate movable member 121. The first intermediate movable member 121 includes a pinion 121b that meshes with the gear 122a of the second intermediate movable member 122. The second intermediate movable member 122 includes a pinion 122b that meshes with the annual cycle driving gear 123.

[0049] The annual cycle driving gear 123 is kinematically connected in a rotating state to an annual cycle correction gear 124 coaxial with the annual cycle driving gear 123, which meshes with the annual cycle display gear 112 supporting the annual cycle period indicator 4.

[0050] According to the present invention, the annual cycle driving gear 123 is connected in a rotating state to the annual cycle correction gear 124 by a correction star wheel 162 positioned between the two gears 123, 124. The correction star wheel 162 cooperates with a correction jumper 163 associated with its own spring (not shown), and the correction jumper 163 is configured to ensure that the correction star wheel 162 is kept in a stable position when the watch movement 1 is operating normally. In this way, the correction star wheel 162 and the correction jumper 163 form a connecting device that can change the indexing between the two gears 123, 124 by an annual cycle correction mechanism 400 described below.

[0051] According to the representative embodiment shown, the correction star wheel 162 is integrated with the annual cycle correction gear 124 in a rotating state, and the correction jumper 163 is supported by the annual cycle drive gear 123 via, for example, a pin 164. Naturally, the correction jumper 163 can move in a rotating state around this pin 164 that forms a pivot axis for the correction jumper 163, and as a result, it can cooperate with various branches of the correction star wheel 162.

[0052] According to an alternative embodiment, the correction jumper 163 is a biasing jumper spring configured to be able to change the indexing between the annual cycle drive gear 123 and the annual cycle correction gear 124 while ensuring that the correction star wheel 162 is kept in a stable position when the watch movement 1 is operating normally.

[0053] In a modified embodiment, the correction star wheel 162 can be integrated with the annual cycle display gear 123, and the correction jumper 163 can be supported by the annual cycle correction gear 124.

[0054] Thus, when the watch movement 1 is operating normally, the rotation of the annual cycle drive gear 123 driven by the drive movable member 55 with the position of 31 rotates the annual cycle correction gear 124 connected in a rotating state with the annual cycle drive gear 123. The annual cycle correction gear 124 then drives the annual cycle display gear 112 that supports the annual cycle period indicator 4.

[0055] Preferably, the resulting gear ratio of the annual cycle gear train 120 between the drive movable member 55 with the position of 31 and the member for indicating the annual cycle period 110 is 12, and the member for indicating the annual cycle period 110 makes a complete rotation after 12 months, and as a result, it means that the drive movable member 55 with the position of 31 and the day hand 3 make 372 jumps (in other words, 12×31 jumps).

[0056] Thus, according to the example shown, the annual cycle indicator 4 is driven daily by the drive movable member 55 with the position of 31 and has a jump of 0.9677° per day.

[0057] The watch movement 1 also includes an annual correction mechanism 400 that can correct the angular position of the annual display gear 112 by rotating the winding reel 410 about the rotation axis of the winding reel 410 at a given axial position of the winding reel 410, regardless of the date.

[0058] Typically, the winding reel 410 can move axially along its rotation axis between different axial positions corresponding to different functions of the watch movement 1, such as manually winding the movement, setting the time, setting the date, and / or setting other displays.

[0059] For example, the winding reel 410 has a first axial position T1 that is a neutral push-in position corresponding to the winding position of the watch movement 1 that allows the winding of the barrel spring. At this first axial position T1, the winding reel 410 is fully pushed into the case 210 of the timepiece 200.

[0060] For example, the winding reel 410 has a second axial position T2 that corresponds to a position for setting the annual display gear 112 and is at a first pull-out position relative to the neutral push-in position.

[0061] For example, the winding reel 410 has a third axial position T3 that is at a second pull-out position relative to the neutral push-in position and corresponds to a position for setting the watch movement 1, such as a position for setting the time.

[0062] To reach the second axial position T2, the user axially pulls out the crown of the winding reel 410 from the neutral position T1 and moves the crown axially towards the outside of the case 210 of the timepiece 200.

[0063] To reach the third axial position T3, the user axially pulls out the crown of the winding reel 410 from the second axial position T2 and moves the crown axially towards the outside of the case 210 of the timepiece 200.

[0064] Figure 1 schematically shows the position of the coil 410 of the film at various axial positions T1, T2, T3 of the coil 410.

[0065] Of course, the coil 410 can have other extraction positions according to the requirements and complexity of the watch movement 1.

[0066] At this second axial position T2, the sliding pinion of the coil 410 having an axial displacement opposite to the axial displacement of the coil 410 along the axis of rotation is moved to engage with a train of intermediate gears (not shown) configured to engage with a corrector 415 having at least one actuating finger.

[0067] In the representative embodiment shown, the corrector 415 has five fingers evenly distributed around the edge of the corrector 415, so that the annual cycle can be corrected more quickly by rotating the coil 410.

[0068] The corrector 415 is configured to cooperate with the tooth portion of the annual cycle corrector star wheel 416 integrated with the intermediate annual cycle correction gear 417 in a rotating state.

[0069] The corrector 415 is mounted on a sliding gear assembly, so that by rotating the coil 410 in a predetermined rotational direction, for example clockwise, the corrector 415 can be engaged with the tooth portion of the annual cycle corrector star wheel 416 to rotate the corrector 415, for example counterclockwise.

[0070] The intermediate annual cycle correction gear 417 meshes with the annual cycle correction gear 124. In this way, by rotating the coil 410, the annual cycle correction gear 124 can be rotated by changing the indexing between the annual cycle drive gear 123 and the annual cycle correction gear 124 when moving beyond the range of the connecting force generated by the spring of the correction jumper 163 that cooperates between two consecutive teeth of the correction jumper 163 and the correction star wheel 152.

[0071] The winding plate 410 enables quick correction of the member for indicating the annual cycle period 110 by a 30° jump of the member, for example, when the dial is provided with 12 indexes divided over 360° by jumps corresponding to a period of 1 month or 31 days.

[0072] The watch mechanism 1 operates as follows. When the timepiece 200 is operating normally, the drive movable member 55 having 31 positions is driven one step per day by the speed regulating wheel train 10 via the finger 53 acting on the date lever 54 as shown above.

[0073] The drive movable member 55 having 31 positions rotates the intermediate movable member 151 and the date display gear 152 supporting the date indicator 3 by one step per day.

[0074] The drive movable member 55 having 31 positions also rotates the first intermediate movable member 121 of the annual cycle wheel train 120. The first intermediate movable member 121 then drives the second intermediate movable member 122 of the annual cycle wheel train 120 that meshes with the annual cycle drive gear 123. Without specific action on the annual cycle correction mechanism 400 and the winding plate 410, the annual cycle drive gear 123 is connected to the annual cycle correction gear 124, and as a result, by rotating the annual cycle drive gear 123, the annual cycle display gear 112 and the annual cycle indicator 4 are rotated by one step per day, that is, by 0.9677°.

[0075] When it is necessary to correct the date indicator 3, the user uses the date correction member 250. Whenever the date correction member 250 is actuated, the date lever 54 is actuated to act on the drive movable member 55 with 31 positions that is driven one step at a time.

[0076] When it is necessary to correct the member for indicating the annual cycle period 110, the user positions the winding plate 410 at the corresponding axial position, which in the described exemplary embodiment is the second axial position T2, positioned between the winding position T1 and the time setting position T3.

[0077] When the roll film 410 is in this position, the sliding pinion of the roll film 410 engages with the intermediate correction gear within the gear train of the intermediate gear. When the user rotates the roll film 410 in a predetermined rotational direction, the intermediate correction gear is driven, and the intermediate correction gear drives the gear train of the intermediate gear until it rotates the corrector 415.

[0078] By rotating the corrector 415, the annual cycle corrector star wheel 416 is rotated, and thus the intermediate annual cycle correction gear 417, which is integrally formed with the annual cycle corrector star wheel 416 in a rotational state, is rotated.

[0079] The intermediate annual cycle correction gear 417 meshes with the annual cycle correction gear 124.

[0080] In this way, when the annual cycle correction gear 124 is rotated to move beyond the range of the indexing connection formed by the cooperation of the correction star wheel 162 and the correction jumper 163 and change the relative position of the annual cycle correction gear 124 with respect to the annual cycle drive gear 123 that is in an engaged state with the drive movable member 55 associated with the positions of the annual cycle gear trains 120 and 31, the annual cycle display gear 112 is rotated.

[0081] In the illustrated exemplary embodiment, the correction star wheel 162 has six branches, and the gear ratio between the annual cycle correction gear 124 and the annual cycle display gear 112 is 1 / 2. In this way, the annual cycle display gear 112 is corrected by jumps when it rotates over an angle of 30°, which is equivalent to a one-month correction, i.e., 31 steps of correction of the drive movable member 55 associated with the position of 31. This is made possible by the 1 / 2 ratio between the annual cycle display gear 112 and the annual cycle correction gear 124 because each jump in the six-branch correction star wheel 162 corresponds to a 60° rotation of the correction star wheel 162 and accordingly the annual cycle correction gear 124.

[0082] Of course, the correction star wheel 162 can have a different number of branches, and the gear ratio between the annual cycle correction gear 124 and the annual cycle display gear 112 must be adapted according to the above ratio and the number of branches of the correction star wheel 162 so that when the dial is divided into a 12-year cycle period, the annual cycle display gear 112 is corrected by a 30° jump.

[0083] Other configurations are possible without departing from the scope of the present invention.

[0084] Thus, there are two methods for correcting the member for indicating the annual cycle period 110, namely, the method of stepwise correcting the drive movable member 55 with 31 positions via the date correction member 250, or more quickly, the method of rotating the roll film 410 in a predetermined rotation direction.

[0085] The watch mechanism 1 according to the present invention provides several advantages. The mechanism for displaying the period of the annual cycle 100 is indexed by the date mechanism 50, so that, for example, when the date mechanism is kept up-to-date by performing appropriate corrections in a shorter number of months, the annual cycle period display is never delayed and is always indexed to that date.

[0086] Therefore, such a mechanism is particularly accurate compared to a mechanism for displaying the period of the annual cycle that is not connected to the date mechanism or to a date drive movable member with 31 stable positions.

Explanation of Reference Numerals

[0087] 1 Watch movement 2 Hour hand 3 Date hand, date display 4 Hand, annual cycle period display 10 Regulation wheel train 50 Date mechanism 51 Intermediate movable member 52 24-hour gear 53 Finger 54 Date lever 54a First arm portion 54b Second arm 54c Lever head 54d Lever beak 55 Drive movable member with position 31 56 Day jumper 100 Annual cycle 110 Period of annual cycle 112 Annual cycle display gear 113 Spindle 120 Annual cycle gear train 121 First intermediate movable member 121a Gear of first intermediate movable member 121b Pinion 122 Second intermediate movable member 122a Gear of second intermediate movable member 122b Pinion 123 Annual cycle drive gear 124 Annual cycle correction gear 150 Date gear train 151 Intermediate movable member 152 Date display gear 153 Spindle 162 Correction star wheel, six-branch correction star wheel 163 Correction jumper 164 Pin 200 Timepiece 210 Case 250 Date correction member 251 Correction lever 252 Correction beak 400 Annual cycle correction mechanism 410 Mainspring 415 Regulator 416 Annual cycle correction regulator star wheel 417 Intermediate annual cycle correction gear P1 Pivoting axis T1 First axis position, winding position T2 Second axis position T3 Third axis position, time setting position

Claims

1. A watch movement (1), comprising: a winding stem (410) capable of assuming at least two pulled positions (T2, T3) relative to a neutral pushed-in position (T1); a date mechanism (50) comprising a driven movable object (55) with 31 stable positions which is actuated in stages by a speed-controlling train (10) in one step per day, said driven movable object (55) with said 31 stable positions driving a date indicator (3); a mechanism for indicating the periods of an annual cycle (100) moved in jumps by a driven movable object (55) with 31 stable positions, said mechanism comprising a member for indicating the periods of said annual cycle (110) and an annual cycle train (120) arranged to rotate a member for indicating the periods of the annual cycle (110) in each step of said driven movable object (55) with 31 stable positions, said annual cycle train (120) comprising an annual cycle drive gear (123) kinematically connected in rotation with an annual cycle correction gear (124), said annual cycle correction gear (124) meshing with said member for indicating the periods of the annual cycle (110); an annual cycle correction mechanism (400) configured to rapidly and independently correct said mechanism for indicating the period of said annual cycle (100) when said winding stem (410) is rotated in a first pulled-out position (T2), said annual cycle correction mechanism (400) configured to rotate said annual cycle correction gear (124) by rotating said winding stem (410) and to change the indexing between said annual cycle drive gear (123) and said annual cycle correction gear (124) when said winding stem (410) moves beyond the existing coupling range between said annual cycle drive gear (123) and said annual cycle correction gear (124); A watch movement (1) equipped with the above.

2. 2. The watch movement (1) according to claim 1, characterized in that the annual cycle drive gear (123) is kinematically coupled in a rotational state to the annual cycle correction gear (124) via a corrector star (162) cooperating with a corrector jumper (163) configured to ensure that the corrector star (162) is kept in a stable position when the watch movement (1) is operating normally.

3. A watch movement (1) as described in claim 2, characterized in that the corrector star (162) is integral with the annual cycle correction gear (124) in a rotating state and the corrector jumper (163) is supported by the annual cycle drive gear (123), or the corrector star (162) is integral with the annual cycle drive gear (123) in a rotating state and the corrector jumper (163) is supported by the annual cycle correction gear (124).

4. 3. Watch movement (1) according to claim 2, characterized in that the corrector star (162) has six branches.

5. 2. A watch movement (1) according to claim 1, characterized in that the indexing between the annual cycle driving gear (123) and the annual cycle correcting gear (124) is modified in a jump by correcting the member for indicating the period of the annual cycle (110) using the winding stem (410), so that the member for indicating the period of the annual cycle (110) is corrected in a jump of 30°.

6. 2. The watch movement (1) according to claim 1, characterized in that the gear ratio of the resulting annual train (120) between the driven movable object (55) with the 31 stable positions and the member for indicating the periods of the annual cycle (110) is 12, so that the member for indicating the periods of the annual cycle (110) rotates completely once after the driven movable object (55) with the 31 stable positions rotates completely 12 times.

7. 2. Watch movement (1) according to claim 1, characterized in that the mechanism for indicating the periods of the annual cycle (100) is a mechanism for indicating the seasons, preferably the Chinese seasons.

8. 2. A watch movement (1) as claimed in claim 1, characterized in that the member for indicating the period (110) of the annual cycle comprises an annual cycle display gear (112) supporting an annual cycle period indicator (4), the annual cycle display gear (112) meshing with the annual cycle correction gear (124).

9. 2. The watch movement (1) according to claim 1, characterized in that the date mechanism (50) comprises a 24-hour gear (52) moved by the regulating train (10), the 24-hour gear (52) comprising a finger (53) configured to actuate a date lever (54) which moves the driven movable object (55) with its 31 stable positions by one step once a day.

10. A watch movement (1) according to claim 9, characterized in that it comprises a date correction member (250) configured to act on the date lever (54) and operate a driven movable object (55) with said 31 stable positions by one stage each time the date correction member (250) is acted upon.

11. A timepiece (200) comprising a watch movement (1) according to claim 1.

12. A timepiece (200) according to claim 11, characterized in that it is a wristwatch.

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