Timepiece movement and timepiece

Abstract

The utility model relates to a clock movement and a timer. The timepiece movement comprises: a winding arbor having at least two pull-out positions with respect to a neutral advanced position; a time gear train; the calendar mechanism comprises a calendar ring which is gradually driven by a time gear train and one step per day; an in-year-cycle period display mechanism driven by the calendar ring in a jumping manner, comprising an in-year-cycle period indicator member and an in-year-cycle gear train directly driven by the calendar ring, the gear train being configured to rotationally drive the in-year-cycle period indicator member on each step of the calendar ring; the bidirectional correction mechanism is used for independently correcting the calendar mechanism or the display mechanism according to the rotation direction of the winding handle shaft at the first pull-out position; the bi-directional correction mechanism has a sliding gear movable between two extreme positions for engaging with the calendar ring or the indicator member of the period in the year cycle depending on the direction of rotation of the winding stem in order to correct the calendar mechanism or the display mechanism, respectively.

Description

Technical Field

[0001] The utility model relates to a display mechanism for periods (such as seasons) in an annual cycle of a timepiece. The mechanism is driven in a jumping manner by a calendar ring with 31 stable positions.

[0002] The utility model also relates to a mechanism for correcting a display mechanism and a calendar mechanism of a period in an annual cycle.

[0003] The utility model also relates to a watch movement comprising a period display mechanism in an annual cycle and a date mechanism.

[0004] The utility model also relates to a timer, such as a wristwatch. Background Art

[0005] The annual cycle display mechanism, especially the annual cycle period display mechanism, can display relevant information of a specific period in a solar year cycle.

[0006] The display mechanism for the period of the year cycle is typically a jumping drive mechanism that can make the indicator correspond to the scale or division of the dial. A year cycle can be divided into several periods, corresponding to the scale or division of the dial. However, these jumping mechanisms for displaying the period of the year cycle are not very accurate because they cannot show the user whether he is at the beginning or end of the displayed year cycle.

[0007] For example, when such a display mechanism for the period in the annual cycle can display the month or season, the pointer will display the current period (month or season), but will not display more accurate information about the remaining time of the current period. Therefore, the jump drive of these displays will cause a "display error" that does not correspond to the actual state of the current period.

[0008] In order to make up for this defect, document EP0397028 proposed a display mechanism for the period in the annual cycle, which is driven by a drive wheel with 31 teeth that directly meshes with the calendar wheel. Under the appropriate gear ratio, the annual cycle display rotates once for every 372 steps of the drive wheel. In other words, the annual cycle display rotates once for every twelve rotations of the drive wheel, and the drive wheel meshes with the calendar wheel and rotates once a month.

[0009] Therefore, with such a display mechanism, the display accuracy of such a jump drive device can be improved by driving the annual cycle display once a day instead of once per period.

[0010] However, this calendar-driven annual cycle display mechanism is very time-consuming to set up, as it requires manual calendar corrections up to 372 times, which is considered to be an ergonomic setting that would give the user an unattractive feeling as a timepiece.

[0011] Therefore, it is necessary to improve the display mechanism of the period in the jumping annual cycle driven by the calendar, especially the correction mechanism of this display mechanism, so as to solve at least one of the above problems. Utility Model Content

[0012] The utility model provides a watch movement, which comprises a display mechanism for the period in the annual cycle driven by a calendar ring in a jumping manner, the calendar ring has 31 stable positions and is driven step by step every day, and also comprises a rapid correction mechanism, which can independently correct the display of the annual cycle or the calendar ring by pulling out the position of the winding stem of the watch movement.

[0013] To this end, the utility model relates to a watch movement, which includes:

[0014] - a winding stem which, relative to its neutral pushed-in position, can have at least two pulled-out positions;

[0015] -Time wheel system;

[0016] - a calendar mechanism, comprising a calendar ring which is driven step by step, one step per day, by a time train;

[0017] - a display mechanism for the time of the year cycle driven in a jumping manner by the date ring, the display mechanism for the time of the year cycle comprising an indicator component for the time of the year cycle and an annual cycle wheel train directly driven by the date ring, the wheel train being configured to rotationally drive the indicator component for the time of the year cycle at each step of the date ring;

[0018] - a bidirectional correction mechanism for independently correcting the calendar mechanism or the mechanism for displaying the time of the year cycle according to the direction of rotation of the winding stem in the first pulled-out position T2; the bidirectional correction mechanism comprises a sliding gear movable between two extreme positions for engaging with a calendar ring or an indicator part of the time of the year cycle according to the direction of rotation of the winding stem so as to respectively correct the calendar mechanism or the mechanism for displaying the time of the year cycle.

[0019] According to the utility model, the display mechanism for the period in the annual cycle can be a mechanism for displaying months, weeks, constellations, twelve zodiac signs, time equations, real-time equations, festivals, equinoxes and solstices, climate seasons, the inclination of the earth relative to the sun, Chinese seasons or solar terms.

[0020] Preferably, the mechanism for displaying the period of the annual cycle is a mechanism for displaying the solar cycle.

[0021] Preferably, the mechanism for displaying the periods in the annual cycle is preferably a mechanism for displaying the Chinese seasons.

[0022] In addition to the features mentioned in the previous paragraph, the watch movement according to the present invention may also have one or more of the following supplementary features, which may be individual or in any technically possible combination of features:

[0023] - a sliding gear comprising a pinion for meshing with an indicator member of the period of the year cycle and a three-finger disc, which rotates integrally with the pinion and is for meshing with the internal teeth of the date ring, the pinion and the three-finger disc rotating about their central axes when the winding stem rotates;

[0024] - the winding stem comprises a sliding pinion which, when the winding stem is in the first extraction position T2, meshes with a gear train which meshes with a distribution wheel which varies the position of the sliding pinion between two extreme positions depending on the direction of rotation of the winding stem;

[0025] - the watch movement comprises a main plate having an elongated hole, the two ends of which define the two extreme positions of the sliding gear;

[0026] - the indicator component for the period of the year cycle comprises an annual cycle display wheel having an indicator for the period of the year cycle; the sliding gear meshes with the annual cycle display wheel;

[0027] - the annual gear train comprises an annual wheel kinematically connected in rotation to the annual display wheel via a correction star wheel cooperating with a correction jumper, the configuration of which ensures that the correction star wheel remains in a stable position during normal operation of the timepiece movement;

[0028] - The correction star wheel rotates integrally with the annual cycle wheel, and the correction positioning rod is supported by the annual cycle display wheel, or the correction star wheel is fixed and rotates integrally with the annual cycle display wheel, and the correction positioning rod is carried by the annual cycle wheel;

[0029] -The correction star wheel has 12 teeth;

[0030] - the correction of the indicator element of the period of the annual cycle by rotating the winding stem, changing the graduation between the annual cycle wheel and the annual cycle display wheel, thereby changing the relative position of the annual cycle wheel with respect to the annual cycle display wheel;

[0031] - Correction of the annual period indicator using the winding stem, changing the division between the annual period wheel and the annual period display wheel by 30 degree jumps;

[0032] - the gear ratio of the annual cycle train between the date ring and the indicator element for the period of the annual cycle is 12, so that the indicator element for the period of the annual cycle completes one revolution after 12 revolutions of the date ring;

[0033] -The mechanism for displaying the periods in the annual cycle is a mechanism for displaying the seasons, preferably the Chinese seasons.

[0034] The utility model also relates to a timer comprising the watch movement according to the utility model.

[0035] Advantageously, the timepiece is a wristwatch. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The objects, advantages and features of the present invention will become apparent from the following detailed description read with reference to the accompanying drawings:

[0037] - Figure 1 is a schematic top view of a watch movement according to the utility model, the movement comprising a calendar mechanism and a display mechanism for the period of the year cycle driven by a calendar ring in a jumping manner; Figure 1 It also shows the bidirectional correction mechanism in the position of correcting the calendar ring;

[0038] - Figure 2 yes Figure 1 a schematic bottom view of the watch movement shown;

[0039] - Figure 3 is a schematic top view of a watch movement according to the utility model, wherein the bidirectional correction mechanism is in a position for correcting the annual cycle display;

[0040] - Figure 4 is a detailed schematic view of the sliding gear of the bidirectional correction mechanism according to the utility model;

[0041] - Figure 5 It is a schematic diagram of a timer including a watch movement according to the utility model.

[0042] In all the drawings, unless otherwise stated, the same elements have the same reference numerals. DETAILED DESCRIPTION

[0043] Figure 1 1 is a schematic top view of a watch movement 1 according to the present invention, which includes a calendar mechanism 50 and a display mechanism 100 for the period of the annual cycle driven in a jumping manner by a calendar ring 55 of the calendar mechanism 50 .

[0044] Figure 2 yes Figure 1 A schematic bottom view of a timepiece movement 1 is shown.

[0045] Figure 5 2 is a schematic diagram of a timer 200, which includes a case 210, and the case contains a watch movement 1 according to the present invention. The timer 200 can be a wristwatch.

[0046] Reference Figure 1 and Figure 2The watch movement 1 generally comprises a time train 10, which is partially shown (particularly in FIG. Figure 2 ), which mainly includes a minute wheel (not shown) for driving the hour wheel 11. The configuration of the time wheel train 10 components enables the hour wheel 11 to complete a circle within 12 hours.

[0047] The hour wheel 11 usually has an hour indicator, such as an hour hand 2 ( Figure 5 ), driven by shaft 12 of hour wheel 11.

[0048] The watch movement 1 according to the present invention comprises a calendar mechanism 50 connected to a time wheel 10 .

[0049] Calendar mechanism 50 usually comprises an intermediate calendar wheel 51 meshed with hour wheel 11, and intermediate calendar wheel 51 itself meshes with 24-hour wheel 52 with pawl 53, or cooperates with a wheel with pawl, so as to drive calendar ring 55 to rotate one step per day.

[0050] The pawl 53 may be Figures 1 to 3 The flexible pawl shown has a base of the pawl 53 coupled to the rotation axis of the 24-hour wheel 52 and a free end thereof configured to cooperate with the internal teeth of the date ring 55 .

[0051] This flexible pawl 53 can especially prevent the user from getting stuck or breaking the parts when the user rotates the watch counterclockwise. When the driving direction of the flexible pawl 53 is opposite to its normal driving direction and the flexible pawl abuts against the teeth of the inner teeth of the calendar ring 55, the flexible pawl will be disengaged due to elastic deformation. Therefore, when the pawl 53 is set counterclockwise, it will not drive the calendar ring 55.

[0052] The date ring 55 is generally a crown with a date indication on its upper surface, and its inner teeth include 31 teeth.

[0053] Between each step, date ring 55 is held in a stable position by date jumper 56 and date jumper spring 57 , which pushes date jumper spring 57 against the inner teeth of date ring 55 .

[0054] Of course, those skilled in the art can also replace the calendar ring 55 with a calendar wheel with 31 stable positions, driven by the time wheel train 10, which moves one step every day, and the calendar wheel is equipped with a calendar pointer driven on the calendar wheel axle.

[0055] Timepiece movement 1 also comprises a mechanism 100 for displaying the time of the year.

[0056] The display mechanism for the periods in the annual cycle may be a mechanism for displaying months, weeks, constellations, phases of the astrology, equations of time, real-time equations, sleep time equations, festivals, equinoxes and solstices, climatic seasons, the inclination of the earth relative to the sun, Chinese seasons or solar terms.

[0057] Preferably, the display mechanism 100 for the period in the annual cycle is a display mechanism for months, seasons or even Chinese seasons.

[0058] The time-of-year cycle display mechanism 100 includes a time-of-year cycle indicator member 110 .

[0059] The time of year cycle indicator member 110 comprises an annual cycle display wheel 112 having an axis capable of receiving a “hand 3 ” such as hand 3 constituting the time of year cycle indicator.

[0060] Alternatively, the annual cycle display wheel 112 may also receive a disk having an upper surface with indications, pointers or graduations corresponding to the periods of the annual cycle to be displayed.

[0061] Depending on the type of display desired, the disk may be fully or partially visible through a suitably shaped opening provided in the dial of timer 200 .

[0062] In normal operation of timepiece movement 1 , indicator member 110 for the period of the annual cycle is driven by annual cycle train 120 which is driven directly by date ring 55 .

[0063] In the example shown, at each step of date ring 55 , date ring 55 meshes with intermediate pinion 121 , the teeth of which are adapted to cooperate with the internal teeth of date ring 55 .

[0064] The intermediate pinion 121 is fixed to the needle-setting wheel 122 . The needle-setting wheel 122 is coaxially mounted with the intermediate pinion 121 and meshes with the 31-position star gear 154 .

[0065] The 31-position star gear 154 is maintained in a stable position between each driving step of the calendar ring 55 by the cooperation between the year cycle jumper 124 and its year cycle jumper spring (not shown).

[0066] The number of teeth of the 31-position star gear 154 is an integral multiple of 31 teeth, while maintaining 31 stable positions. When the 31-position star gear has a number of teeth that is n times 31, the 31-position star gear is driven with n teeth per day.

[0067] exist Figures 1 to 3 In the example shown, the 31-position planetary gear 154 has 62 teeth. Therefore, the 31-position planetary gear 154 is driven by a distance of two teeth every time the calendar ring 55 jumps once a day. Therefore, the 31-position planetary gear 154 can make a complete rotation within 1 month.

[0068] The 31-position star gear 154 has a pinion 155 which meshes with the annual cycle wheel 151 which is arranged coaxially with the annual cycle wheel display wheel 112. In the example shown, the gear ratio between the pinion 155 and the annual cycle wheel 151 is 6.

[0069] Therefore, each step of the calendar ring 55 causes the annual cycle wheel 151 to rotate by an angle corresponding to the transmission ratio of the annual cycle wheel train 120 .

[0070] In the example shown, each step of date ring 55 causes annual cycle wheel 151 to rotate by 30 degrees, which corresponds to a transmission ratio of 12 of annual cycle wheel train 120 .

[0071] The annual cycle wheel 151 is rotatably connected to the annual cycle display wheel 112 with an indicator of the period of the annual cycle.

[0072] According to the present invention, the annual cycle wheel 151 is rotatably connected to the annual cycle display wheel 112 via a correction star wheel 162 located between the two wheels 112, 151. The correction star wheel 162 cooperates with a correction positioning rod 163, which is used to ensure that the correction star wheel 162 maintains a stable position during normal operation of the watch movement 1. Therefore, the correction star wheel 162 and the correction positioning rod 163 constitute a coupling device, and the indexing between the two wheels can be adjusted by a correction mechanism 400, which will be described below.

[0073] According to the first embodiment, the correction star wheel 162 rotates integrally with the annual cycle wheel 151, while the correction positioning rod 163 is carried by the annual cycle display wheel 112 via, for example, a pin 164. Of course, the correction positioning rod 163 can rotate around the pin 164, which constitutes the pivot of the correction positioning rod 163 so that it can cooperate with each tooth of the correction star wheel 162.

[0074] In an alternative embodiment, correction star 162 is formed integrally with annual cycle display wheel 112 , while correction jumper 163 is carried by annual cycle wheel 151 .

[0075] Therefore, during normal operation of the watch movement 1 , the annual cycle wheel 151 rotates under the drive of the calendar ring 55 , driving the annual cycle display wheel 112 to rotate, and the annual cycle display wheel 112 is rotationally connected to the annual cycle wheel 151 .

[0076] The timepiece movement 1 also includes a bidirectional correction mechanism 400 enabling the calendar ring 55 or the indicator member 110 of the period of the year cycle to be corrected by rotation of the winding stem 410 about its rotation axis at a given axial position of the winding stem 410 .

[0077] More specifically, the winding stem 410 rotates in a first rotation direction A to correct the date ring 55, and the winding stem 410 rotates in a second rotation direction B (opposite to the rotation direction A) to correct the indicator member 110 of the period in the year cycle. For example, the rotation direction A is shown as a clockwise direction and the rotation direction B is shown as a counterclockwise direction; however, the reverse rotation is possible without departing from the present invention.

[0078] Typically, winding stem 410 is axially movable along its axis of rotation between different axial positions corresponding to different functions of timepiece movement 1 , such as manually winding the movement, setting the time, setting the date and / or adjusting other indicators.

[0079] For example, the winding stem 410 has a first axial position T1, which is a neutral position corresponding to the winding position of the watch movement 1, capable of winding the barrel spring. In this first axial position T1, the winding stem 410 is fully pushed toward the case 210 of the timepiece 200.

[0080] For example, winding stem 410 has a second axial position T3 which is a pulled-out position relative to the advanced neutral position and corresponds to a regulating position of timepiece movement 1 , for example a time-setting position.

[0081] In order to reach the second axial position T3 , the user needs to axially pull the crown of the winding stem 410 to move it axially toward the outside of the case 210 of the timepiece 200 .

[0082] The correction of the date ring 55 and the indicator member 110 for the period of the year cycle is performed in the third axial position T2 which is the pulled-out position and is different from the second axial time setting position T3.

[0083] Thus, relative to the neutral advancement position T1 , the winding stem 410 can have at least two withdrawal positions T2 and T3 .

[0084] Figure 1 A schematic diagram showing the crown position of winding stem 410 in different axial positions T1 , T2 , T3 .

[0085] like Figure 1 As shown, the third axial position T2 is the first position pulled out from the neutral advancement position T1. The second axial time setting position T3 can be reached by axially pulling the winding stem 410 from the third axial position T3 toward the outside of the watch case 210. However, the order of the axial positions T2 and T3 can also be reversed, so that the first withdrawal position of the winding stem 410 from the advancement position corresponds to the time setting position, and the second withdrawal position of the winding stem 410 from the first withdrawal position corresponds to the correction position of the date ring 55.

[0086] Of course, according to the needs and complexity of the watch movement 1, the winding stem 410 may also have other pull-out positions.

[0087] In the third axial position T2 , the axial displacement of the sliding pinion 412 of the winding stem 410 is opposite to the axial displacement of the winding stem 410 , meshing with the setting wheel group 61 , 62 , 63 along the rotation axis, and the setting wheel group 61 , 62 , 63 meshes with the distribution wheel 64 .

[0088] When the sliding gear 66 is stopped, the distribution wheel 64 meshes with the pinion 65 of the sliding gear 66, which can cause the sliding gear to start moving and the pinion 65 to rotate around its central axis. The sliding gear 66 can move along an arc between two extreme positions of the slit hole 67 provided in the main plate of the watch movement 1 or the bridge of the watch movement 1, and the center of the arc corresponds to the rotation axis of the distribution wheel 64. The two ends of the slit hole 67 define the two extreme positions of the sliding gear 66. The pinion 65 of the sliding gear 66 can rotate around its central axis, and the central axis of the pinion 55 can move according to the movement of the sliding gear 66 according to the rotation direction of the winding stem 410.

[0089] Figure 4 More specifically, two extreme positions of the sliding gear 66 in the slotted hole 67 according to the rotation direction of the distribution wheel 64 are shown.

[0090] The sliding gear 66 also has a three-finger corrector 68, which rotates integrally with the pinion 65 and is coaxial with the pinion 65. When the sliding gear 66 is in the first extreme position (such as Figure 1 As shown), the three-finger corrector 68 cooperates with the inner teeth of the calendar ring 55.

[0091] When the sliding gear 66 is in the second extreme position, the pinion 65 meshes with the year cycle display wheel 112 . Figure 3 This location is specifically noted.

[0092] Therefore, it can be clearly understood that at this axial position T2 of the winding stem 410, the winding stem 410 rotates in the rotation direction A to drive the distribution wheel 64 to rotate in the first rotation direction (clockwise in the example shown), thereby stopping the sliding gear 66 at the first extreme position of the slit hole 67. At the first extreme position of the sliding gear 66, the three-finger corrector 68 is close to the inner teeth of the calendar ring 55. When the user continues to rotate the winding stem 410 in the rotation direction A, the sliding gear 66 stops, and the rotation of the distribution wheel 64 drives the pinion 65 to rotate, thereby driving the three-finger corrector 68 to rotate to correct the position of the calendar ring 55.

[0093] On the contrary, the winding stem 410 rotates in the rotation direction B, driving the distribution wheel 64 to rotate in the second rotation direction (counterclockwise in the example shown), thereby stopping the sliding gear 66 at the second extreme position of the slit hole 67. In this second extreme position of the sliding gear 66, the pinion 65 is engaged with the annual cycle display wheel 112. When the user continues to rotate the winding stem 410 in the rotation direction B, as the sliding gear 66 stops at the second extreme position of the slit hole 67, the rotation of the distribution wheel 64 drives the pinion 65 to rotate, thereby correcting the position of the annual cycle display wheel 112, and modifying the relative position between the annual cycle display wheel 112 and the annual cycle wheel 151 by 30° by overtaking the indexing coupling exerted on the correction star wheel 162 by the correction positioning lever 163 and its spring, and the correction star wheel 162 consists of 12 teeth.

[0094] In order to preferentially ensure the swing of the sliding gear 66 when the distribution star wheel 64 rotates, an elastic foil is arranged between the sliding gear 66 and the pinion 65 so as to generate friction between the sliding gear 66 and the pinion 65 .

[0095] Preferably, the gear ratio of the annual cycle wheel train 120 between the calendar ring 55 and the indicator component 110 of the period in the annual cycle is 12, that is, the indicator component 110 of the period in the annual cycle completes a circle after 12 months, that is, after the calendar ring 55 jumps 372 times (i.e., 12×31).

[0096] The working principle of the clock movement 1 is as follows: when the timer 200 works normally, the calendar ring 55 is driven by the time wheel train 10, and as mentioned above, it moves one step every day.

[0097] The calendar ring 55 drives the intermediate pinion 121 to rotate, and the intermediate pinion 121 drives the 31-position star gear 154 to rotate through the setting wheel 122. The pinion 155 of the 31-position star gear 154 in turn drives the annual cycle wheel 151. When the user does not operate the winding stem 410, the annual cycle wheel 151 is connected to the annual cycle display wheel 112, so that the rotation of the annual cycle wheel 151 causes the annual cycle display wheel 112 and the annual cycle indicator to rotate one step every day.

[0098] If it is necessary to correct date ring 55 or indicator member 110 of the period of the year cycle, the user can position winding stem 410 in a corresponding axial position, in the example shown, third axial position T2 , between winding position T1 and time setting position T3 .

[0099] In this position of the winding stem 410, the sliding pinion 412 of the winding stem 410 meshes with the setting wheel set 61 of the correction setting wheel.

[0100] When the user rotates the winding stem 410 in the first rotation direction A, the correction setting wheel 61 is driven counterclockwise, and in turn the correction setting wheel 61 drives the first intermediate setting wheel 62 , the second intermediate setting wheel 63 and the distribution wheel 64 clockwise.

[0101] Due to the friction between the sliding gear 66 and the sliding gear pinion 65, the clockwise rotation of the distribution wheel 64 drives the sliding gear 66 to enter the first limit position of the slotted hole 67 until it stops. Once the sliding gear 66 stops at the first limit position of the slotted hole 67, the rotation of the distribution wheel 64 causes the pinion 65 and the three-finger corrector 68 to rotate, and the three-finger corrector 68 rotates together with the pinion 65. The three-finger corrector 68 cooperates with the inner teeth of the calendar ring 55 to change the position of the calendar ring 55, thereby correcting the calendar of the watch movement 1.

[0102] When the user rotates the winding stem 410 in the second rotation direction B, the correction setting wheel 61 is driven clockwise, and in turn the correction setting wheel 61 drives the first intermediate setting wheel 62 , the second intermediate setting wheel 63 and the distribution wheel 64 counterclockwise.

[0103] Due to the friction between the sliding gear 66 and the sliding gear pinion 65, the counterclockwise rotation of the distribution wheel 64 drives the sliding gear 66 into the second limit position of the slotted hole 67 until it stops. Once the sliding gear 66 stops at the second limit position of the slotted hole 67, the pinion 65 will mesh with the annual cycle display wheel 112. Therefore, the rotation of the pinion 65 exceeds the indexing connection formed by the correction star wheel 162 and the correction positioning rod 163, causing the annual cycle display wheel 112 to rotate, thereby changing the relative position of the annual cycle display wheel 112 relative to the annual cycle wheel 151.

[0104] Correction star wheel 162 has 12 teeth, and annual cycle display wheel 112 is corrected in a jump manner by rotating by an angle of 30°, which corresponds to a correction of one month, ie, 31 steps of calendar ring 55 .

[0105] Therefore, there are two methods of correcting the indicator member 110 of the period in the annual cycle: one is to correct the date ring 55 by rotating the winding stem 410 in the first rotation direction A, and the other is to correct the date ring 55 by rotating the winding stem 410 in the second rotation direction B more quickly.

[0106] The clock mechanism 1 according to the present invention has several advantages. Since the display mechanism 110 for the period in the annual cycle matches the calendar mechanism 50, if the calendar mechanism is kept updated, such as by making relevant corrections during the short months, the display of the period in the annual cycle will never fall behind and will always match the calendar.

[0107] This mechanism is therefore particularly precise compared to mechanisms for displaying the time of the year that are not connected to a calendar or a calendar driving wheel having 31 stable positions.

Claims

1. A watch movement (1), characterized in that: The watch movement comprises: - a winding stem (410) which can have at least two pulled-out positions (T2, T3) relative to a neutral pushed-in position (T1); - time gear train (10); - a calendar mechanism (50), comprising a calendar ring (55), which is driven step by step by the time train (10), one step per day; - a display mechanism (100) for the time of the year cycle driven in a jumping manner by the calendar ring (55), the display mechanism (100) for the time of the year cycle comprising an indicator component (110) for the time of the year cycle and an annual cycle wheel train (120) directly driven by the calendar ring, the wheel train being configured to rotationally drive the indicator component (110) for the time of the year cycle at each step of the calendar ring (55); - a bidirectional correction mechanism (400) configured to independently correct a calendar mechanism (50) or a display mechanism (100) for the period of the year cycle according to the rotation direction of the winding stem in the first pulled-out position (T2); the bidirectional correction mechanism (400) having a sliding gear (66) movable between two extreme positions for engaging with a calendar ring (55) or an indicator component (110) for the period of the year cycle according to the rotation direction (A, B) of the winding stem (410) so as to respectively correct the calendar mechanism (50) or the display mechanism (100) for the period of the year cycle.

2. The watch movement (1) according to claim 1, characterized in that: The sliding gear (66) includes a pinion (65) for engaging with an indicator component (110) of a period in an annual cycle and a three-finger corrector (68), the three-finger corrector being rotationally fixed to the pinion (65) and being engaged with the internal teeth of the calendar ring (55), the pinion (65) and the three-finger corrector (68) rotating around their central axis by the rotation of the winding stem (410).

3. The watch movement (1) according to claim 1, characterized in that: The winding stem (410) includes a sliding pinion (412). When the winding stem is in a first withdrawal position (T2), the sliding pinion (412) meshes with a needle-setting wheel group (61, 62, 63), and the needle-setting wheel group meshes with a distribution wheel (64). The distribution wheel (64) is configured to change the position of a sliding gear (66) between two extreme positions according to the rotation direction (A, B) of the winding stem (410).

4. A timepiece movement (1) according to any one of the preceding claims, characterised in that The watch movement (1) comprises a main plate, on which a slit hole (67) is provided, and two ends of the slit hole define two extreme positions of a sliding gear (66).

5. The watch movement (1) according to any one of claims 1 to 3, characterized in that: The indicator component (110) for the time of the year cycle includes an annual cycle display wheel (112) on which an indicator for the time of the year cycle is carried; and the sliding gear (66) is configured to mesh with the annual cycle display wheel (112).

6. The watch movement (1) according to claim 5, characterized in that: The annual cycle wheel train (120) comprises an annual cycle wheel (151) which is connected to the annual cycle display wheel (112) in rotation via a correction star wheel (162) which cooperates with a correction positioning rod (163), wherein the correction positioning rod (163) is configured to ensure that the correction star wheel (162) remains in a stable position during normal operation of the watch movement (1).

7. The watch movement (1) according to claim 6, characterized in that: The correction star wheel (162) rotates integrally with the annual cycle wheel (151), and the correction positioning rod (163) is carried by the annual cycle display wheel (112), or the correction star wheel (162) is rotationally connected to the annual cycle display wheel (112), and the correction positioning rod (163) is carried by the annual cycle wheel (151).

8. The watch movement (1) according to claim 6, characterized in that: The correction star wheel (162) comprises 12 teeth.

9. The watch movement (1) according to claim 6, characterized in that: The indicator component (110) of the period in the annual cycle is corrected using the winding stem (410), changing the division between the annual cycle wheel (151) and the annual cycle display wheel (112).

10. The watch movement (1) according to claim 8, characterized in that: The annual cycle period indicator component (110) is corrected using a winding stem (410) to change the division between the annual cycle wheel (151) and the annual cycle display wheel (112) in 30 degree jumps.

11. A timepiece movement (1) according to any one of claims 1 to 3, characterized in that: The gear ratio of the annual cycle gear train (120) between the calendar ring (55) and the indicator component (110) of the period in the annual cycle is 12, so that the indicator component (110) of the period in the annual cycle completes one revolution after the calendar ring (55) rotates 12 times.

12. The timepiece movement (1) according to any one of claims 1 to 3, characterized in that The mechanism (100) for displaying the period in the annual cycle is a mechanism for displaying seasons, preferably Chinese seasons.

13. A timepiece (200) comprising a timepiece movement (1) according to any one of the preceding claims.

14. The timer (200) according to claim 13, characterized in that: The timer (200) is a wristwatch.

Images