EP3008523A2 - Mecanisme de calendrier pour mouvement horloger - Google Patents
Mecanisme de calendrier pour mouvement horlogerInfo
- Publication number
- EP3008523A2 EP3008523A2 EP14729694.1A EP14729694A EP3008523A2 EP 3008523 A2 EP3008523 A2 EP 3008523A2 EP 14729694 A EP14729694 A EP 14729694A EP 3008523 A2 EP3008523 A2 EP 3008523A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- board
- wheel
- mobile
- tooth
- toothing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B19/00—Indicating the time by visual means
- G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
- G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
- G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped
- G04B19/253—Driving or releasing mechanisms
- G04B19/25333—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement
- G04B19/2534—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released continuously by the clockwork movement
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B19/00—Indicating the time by visual means
- G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
- G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
- G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped
- G04B19/253—Driving or releasing mechanisms
- G04B19/25333—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement
- G04B19/25353—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by the clockwork movement
- G04B19/2536—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by the clockwork movement automatically corrected at the end of months having less than 31 days
Definitions
- the present invention relates to a counting device, for a watch movement calendar mechanism, comprising a fixed gear member and a program mobile, coaxial, the latter comprising a first rotary board having an external toothing, a device for correcting short months, supported by the first board and having at least a first movable tooth in reference to the first board between a first position, retracted, and a second position, extracted, in which it is added to the toothing of the first board, by juxtaposition or superimposition,
- control mechanism arranged to define the position of the first movable tooth and comprising at least a first wheel arranged in engagement with the fixed toothed member.
- Additional mobile worn by the first board, are arranged to ensure the training of the mobile program an additional step at the end of the month of 29 and 30 days.
- this device is complex because it has a large number of wheels, some of which are stacked on top of each other, in addition to the sliding element, all these components being carried by the program mobile.
- the program mobile necessarily has a large diameter as well as a large thickness.
- the patent application CH 699102 A2 in the name of the present Applicant, describes an annual calendar mechanism, for a watch movement, comprising a program mobile of construction similar to that of the program mobile of the preceding document, that it being also coaxial with a fixed toothed member.
- This program mobile carries a first wheel arranged in engagement with the fixed toothed member and arranged in simultaneous engagement with two conventional gear trains of conventional type, to correct the display of the date at the end of the short month.
- This mechanism also makes it possible to perform a bidirectional manual correction of the date value.
- Each gear train drives a correction gear, most of whose teeth are truncated.
- the two correction wheels are superimposed on one another, while having offset axes of rotation, which renders the assembly of the program mobile unclear.
- this construction is relatively complex and also has a large footprint because of the high number of wheels carried by the mobile program .
- the assembly of this mechanism is also complex.
- the mechanism is arranged to introduce, at first, an offset between the two date wheels at the beginning of the short months, this difference corresponding to the difference between 31 and the number of days of the month concerned. This offset amounts to programming the second date wheel so that its angular orientation is representative of the effective number of days of the current month.
- the mechanism is released, at the end of the month, to allow the first date wheel carrying the display member to catch the angular orientation of the second date wheel and directly display the display. the first day of the following month.
- This mechanism is however very complex to achieve and develop and has a relatively large footprint in terms of the area occupied in the plane of the watch movement.
- This application relates to an annual or perpetual calendar mechanism, for a watch movement, comprising a program mobile arranged to train in particular a date display mobile.
- the program mobile has three tracks, the shape of which depends on the number of days in the months of the year, each of which is associated with a retractable tooth.
- the program mobile is associated with a gear reduction gear arranged to provide a differentiated rotation training of the different tracks.
- Each retractable tooth is housed in a radial groove and carries a pin engaged in the corresponding track, so that the tooth is guided to move in a radial direction, for the purpose of complete a drive tooth of the date display mobile when necessary.
- a main object of the present invention is to overcome the disadvantages of counting devices known from the prior art, by proposing a alternative construction, less complex and less cumbersome but allowing to obtain the same result, with a total reliability.
- the present invention relates more particularly to a counting device of the type indicated above, characterized in that the control mechanism comprises a moving month, rotatably mounted on the first board, comprising a toothing having a kinematic connection with the first wheel and, carrying a first variable radius cam arranged to cooperate with the first movable tooth and define its position.
- the counting device has a limited size in the plane of the corresponding watch movement, as well as in the axial direction of the program mobile.
- Moving the movable tooth between its two positions makes it possible to take into account the difference in duration between the months of 30 days and the months of 31 days.
- the first wheel is a rotary wheel mounted according to an axis integral with the first board, the additional teeth of the first board being an internal toothing.
- the counting device can equip an annual calendar or perpetual calendar movement mechanism.
- it advantageously comprises a second movable tooth with reference to the first board between a first position, retracted, and a second position, extracted, in which it is added to the toothing of the first board, by juxtaposition or superposition.
- the first cam is arranged to cooperate with the second movable tooth so as to also define the position.
- the counting device also takes into account the reduced number of days in February, without taking into account leap years in the case of an annual calendar and, with their inclusion in the case of a perpetual calendar.
- the correction device short months comprises a first resilient member arranged to act on the movable tooth or teeth and define at least one of the first and second positions.
- the first elastic member comprises an elastically deformable arm movable tooth, each of which has an end portion associated with the corresponding movable tooth.
- the first cam has a periphery arranged to act, if necessary, on the first movable tooth or on the first and second movable teeth so as to exert pressure on them and to push them towards their extracted position.
- the first elastic member has a generally open ring shape comprising a lug arranged to cooperate with abutment surfaces formed in the first board to make the elastic member integral in rotation of the first board.
- the calendar mechanism When the calendar mechanism is of the perpetual type, it may comprise a second elastic member, leap correction, integral in rotation with the first board and acting on a third movable tooth with reference to the first board between a first position, retracted, and a second position, extracted, in which it is added to the teeth of the first board, by juxtaposition or superposition, the control mechanism being also arranged to define the position of the third tooth.
- control mechanism preferably comprises
- a second wheel preferably a satellite wheel, having a kinematic link with the mobile of the months and rotatably mounted along an axis integral with the first board,
- a bilextile correction device rotatably mounted on the first board and comprising a toothing having a kinematic connection with the second wheel and carrying a second variable radius cam arranged to cooperate with the third movable tooth and define its position.
- the second satellite wheel is arranged in engagement with an additional gear of the months mobile.
- first and second planet wheels are arranged coaxially, which further reduces the number of components and the size of the counting device according to the invention.
- the second elastic member comprises at least one elastically deformable arm and having an end portion associated with the third movable tooth.
- the device may further comprise an additional board, secured to the first board and having a housing for the second member so that the latter is secured to the additional board in rotation.
- the program mobile has a kinematic connection with a date display member.
- it may also have a kinematic link with a display member of the day of the week and / or with a display member of the month and / or with a display member leap years.
- the invention also relates to a watch movement comprising such a counting device and a timepiece comprising such a watch movement.
- FIG. 1 represents a simplified front view of a part of a watch movement comprising a counting device according to a first preferred embodiment of the present invention
- FIG. 2 shows an exploded perspective view of a portion of the construction shown in Figure 1;
- Figure 3 shows a simplified front view of some elements shown in Figure 2, when assembled
- Figure 4 shows a simplified perspective view of the watch movement of Figure 1;
- Figure 5 shows an exploded perspective view of a construction detail of the watch movement of Figure 1;
- Figure 6 shows a simplified front view of some elements of the watch movement of Figure 1, isolated
- FIG. 7 represents an exploded perspective view similar to that of FIG. 2, in relation to a second preferred embodiment of the invention.
- Figure 8 shows a simplified front view of some elements illustrated in Figure 7, when assembled.
- FIG. 1 represents a simplified front view of a part of a watch movement, according to a first preferred embodiment of the invention, comprising display members for information relating to a calendar, preferably annual or perpetual type.
- this watch movement comprises three toothed discs 1, 2 and 3 each carrying a window 4 intended to cooperate with a ring (not shown) bearing indications, respectively, the date, the month and the day of the week.
- the calendar When the calendar is of the annual type, it is necessary to provide a specific counting device capable of taking into account the difference in duration between the months of 30 days and the months of 31 days. In addition, an annual calendar is usually scheduled considering that the month of February has 29 days. Thus, a correction of the date is necessary at the end of February of non-leap years which counts only 28 days.
- the calendar When the calendar is of the perpetual type, it is programmed to take into account the difference in the number of days between leap years and non-leap years for the month of February.
- the watch movement illustrated here as a non-limiting indicative is of the perpetual type, although the object of the present invention is also applicable to an annual type of calendar, with some adaptations of the present teaching, within the scope of the skilled person.
- the watch movement comprises a counting device 200 which will be described in detail in connection with FIGS. 2 and 3 and which is arranged to ensure correct training of a display gear of the days of the week. 400, described with reference to FIGS. 4 and 5, of a date display gear wheel 500, visible in FIGS. 1 and 4, and of a month display gear train 600, described with reference to FIG. .
- the watch movement of FIG. 1 also comprises a cogwheel year 700, driven from the display gear of the months 600 and which will not be described in detail. Indeed, this cog in leap years simply comprises a plurality of mobile arranged to introduce the correct gearing to be applied to a display member leap years, from a wheel bearing information on the months.
- FIGS. 1 and 4 mechanisms for correcting the information to be displayed by the calendar have been represented in FIGS. 1 and 4, in the region of implantation of the winding stem 5.
- the 24-hour mobile comprises a first wheel 202 having three superimposed levels of teeth.
- a first level of toothing 204 to 24 teeth is intended to mesh with the hour wheel.
- Four teeth of the first toothing 204 have a thickness greater than the other teeth to extend into a second level of toothing 206, whose function will be explained later.
- the fourth of these four teeth has a thickness greater than that of the first three to extend in a third gear level 208, thus having only one tooth.
- the 24-hour mobile further comprises an additional board 210 for driving the display gear of the days of the week 400.
- the board 210 has only one tooth 21 1, while the rest of its periphery has a radius greater than that which would have the bottom of a complete toothing that would correspond to the tooth 21 1.
- the first wheel 202 carries two fingers 212 and 214, intended to cooperate respectively with holes 216 and 218 of the additional board, to ensure the correct angular positioning of the latter on the first wheel.
- the additional board is here assembled to the first wheel by means of screws 220 by way of nonlimiting illustration.
- the mobile 24 hours is intended to ensure the training of a mobile program 222 so that the number of days of the different months is taken into account to control the display of the calendar.
- the motions of the program mobile 222 are transmitted to the display disc 1 of the date, in a conventional manner, by means of the date wheel 500.
- the program mobile 222 comprises a first board 224 having a first gear 225 of 31 teeth.
- the first board has a first support surface 226 on which is arranged a first elastic member 227, correction of short months, carrying first and second movable teeth 228 and 229.
- the first member 227 has the general shape of an open ring comprising a frame having two arms in the shape of a portion of a circle and carrying, each at its end, a movable tooth.
- the first elastic member 227 has two portions distinct from each other and substantially symmetrical to define two independent arms, without departing from the scope of the present invention.
- the frame also has a lug 230, here substantially diametrically opposed to the teeth 228, 229 and intended to cooperate with the side walls of a slot 232 formed in the first board 224 to ensure the correct positioning and maintenance of the first organ 227 on the first board.
- Each of the teeth 228, 229 is arranged in an additional slot 234, formed in the first board, to contribute to maintaining the first elastic member on the first board and, to ensure radial guidance of the teeth when they are moved between a first position, retracted, and a second position, extracted.
- the first board has first and second annular housing 236, 237 juxtaposed at different depth levels and intended to house a moving month 238.
- the mobile of the month 238 has the general shape of a two-level crown.
- a first level, intended to be housed in the first housing 236, performs the function of a cam 240 whose periphery has a variable external radius. More specifically, the periphery of the cam 240 has five inactive portions, of the same radius, separated from each other by four simple bosses 241, associated with the months of April, June, September and November, and a double boss 242 associated with the February. It will be noted that two inactive portions, associated respectively with the months of July-August and December-January, have a double length compared to the three others. The function of the cam will be explained later, in connection with FIG.
- the inner periphery of the cam 240 has a tooth 244 directed towards its center and whose function will also be explained later.
- the second level of the mobile of the month 238 has an internal toothing 245 intended to be housed in the second housing 237.
- the first board 224 also comprises a finger 246 intended to serve as a support for first and second planet wheels 248 and 249.
- a toothed member 250 fixed, is arranged in the center of the first board 224, the latter being assembled to a frame member of the watch movement not shown.
- the toothed member carries a single tooth 251 arranged to cooperate with the first satellite wheel 248 and rotate it on itself as it passes in front of it.
- the rotation of the first satellite wheel 248 causes a rotation of the mobile of the month 238 with reference to the first plate 224, by cooperation with its internal toothing 245.
- a second intermediate board 252 is secured to the first board 224 by means of screws 254, in particular to maintain assembled all that has just been described.
- the second board 252 has a support surface 256 on which is arranged a second elastic member 257, leap correction, carrying a third movable tooth 258.
- the second member 257 comprises a frame having a generally annular shape and comprising first and second portions 259, 260, resiliently deformable, each of which is connected to one side of the third movable tooth 258.
- the frame also has a lug 261, here substantially diametrically opposed to the tooth 258 and intended to cooperate with a slot 262 formed in the second board 252 to ensure the correct positioning and maintenance of the second member 257 on the second board .
- the third tooth 258 is arranged in an additional slot 264, formed in the second board, to contribute to the maintenance of the second elastic member on the second board and, to ensure a radially guiding the tooth when moved between a first retracted position and a second retracted position.
- a mobile correction comprising a third board 266 is assembled on the second board 252, so as to be free to rotate relative to the latter, in particular to ensure an axial retention of the second member 257.
- the inner face of the third board carries a pinion 268 coaxial with the board.
- This pinion 268 is intended to mesh with the second satellite wheel 249 to induce a rotation of the third board 266 relative to the first board 224.
- the inner face of the third board also carries a second cam 270 (visible in transparency), similar to the first cam 240 and whose periphery has a variable external radius. More specifically, the periphery of the cam 270 has three bosses 271, with reference to a base radius, two of which are diametrically opposed and the third is situated between the two, at 90 degrees. An inactive portion 272 is diametrically opposed to the third boss.
- a jumper 274 cooperates with the toothing 204 to ensure the angular positioning of the mobile program 222, in a conventional manner.
- Figure 3 illustrates some details of operation of the program mobile 222 which has just been described.
- Figure 3 illustrates the configuration of certain components of the counting device according to the present invention as they are a February 28.
- the first of the teeth 206 of the mobile 24 hours 201 extending on the second level is located within range of the program mobile 222.
- the mobile 24 hours rotates clockwise in the illustration of Figure 3.
- the month of February has 28 days, which implies that the mobile program 222 must turn four steps to ind iquer then the first day of the following month.
- the third movable tooth 258 (not visible in Figure 3) is in its extracted position, that is to say in the position to cooperate with the first tooth 206 of the mobile 24 hours.
- the bosses 271 of the second cam 270 are intended to exert pressure on the third movable tooth 258, the last day of February non-leap years, to place it in its extracted position.
- the inactive portion 272 is disposed opposite the third movable tooth to allow it to position itself in its retracted position.
- the first tooth 206 drives the mobile program 222 a step in the counterclockwise direction, through the third movable tooth 258.
- the date display is increased from 28 to 29.
- the first cam 240 is arranged in such a way that its double boss 242 is located opposite the first two movable teeth 228 and 229 to place them both in their extracted position (although they are shown slightly recessed on the Figure 3 to facilitate understanding of the mechanism).
- the second tooth 206 of the second level meets the first movable tooth 228 and causes an additional rotation of a step of the mobile program 222.
- L display of the date then changes from 29 to 30.
- the third tooth 206 of the second level meets the second movable tooth 229 and causes an additional rotation of a step of the program mobi 212.
- the display of the date then passes the 30 to 31.
- the fourth tooth 208 extending at the third level meets a tooth of the first toothing 225 of the program mobile and causes an additional rotation of a step of the latter.
- the display of the date then changes from 31 to 1.
- the movable teeth 228, 229 and 258 are no longer in position to mesh with the mobile 24 hours for at least 28 days.
- the third movable tooth 258 is in its retracted position, that is to say out of reach of the first tooth 206 of the 24-hour mobile, the inactive portion 272 of the cam 270 being located in look at the third movable tooth 258.
- the first three teeth 206 extending at the second level pass the mobile program 222 without driving, while the fourth tooth 208 extending at the third level comes into contact with a tooth of the first gear 225 to rotate the program mobile one step.
- the display of the date then changes from 28 to 29.
- the mobile 24 hours 201 then continues to turn on itself for 20 hours without contacting the mobile program
- the first tooth 206 extending at the second level meets the first movable tooth 228 and causes a rotation of a step of the mobile program 222.
- the display of the date passes then from the 29th to the 30th.
- the second tooth 206 of the second level meets the second movable tooth 229 and causes an additional rotation of a step of the mobile program 222.
- the display The date then goes from 30 to 31.
- the third tooth 206 of the second level passes next to the program mobile 222 but does not lead to it since the first set of teeth 225 is located at the third level, ie out of reach of this tooth 206.
- the date display remains unchanged.
- the fourth tooth 208 extending at the third level encounters a tooth of the first toothing 225 of the program mobile and causes an additional rotation of a step of the latter.
- the display of the date then changes from 31 to 1.
- the rotation of the mobile program 222 on itself causes a rotation of the two planet wheels 248 and 249 around the fixed tooth member 250, because the finger 246 is integral with the first board 224 of the program mobile 222.
- the toothing of the first satellite wheel 248 slides on the periphery of the toothed member 250, similarly to a transmission of the Maltese cross type, generally implemented in certain date mechanisms.
- the first satellite wheel 248 rotates around the toothed member 250 without being able to turn on itself.
- This type of construction advantageously makes it possible to do without jumpers to ensure the angular positioning of certain wheels of the mechanism.
- the simple boss 241 located to the right of the inactive portion mentioned above is positioned next to the second movable tooth 229 to push back to its extracted position.
- the first movable tooth 228 remains in the retracted position since it is always located opposite a portion of the cam 240 of reduced radius.
- the respective roles of the first and second movable teeth can here be reversed depending on the arrangement of the various bosses on the cam 240, without departing from the scope of the invention.
- the first tooth 206 located at the second level cooperates with the second movable tooth 229 to advance the program mobile 222 by one step.
- the display of the date then changes from 30 to
- the mobile of the month 238 also makes a complete turn in one year compared to the second satellite wheel 249 which is pivoted on the rod 246, integral with the first board 224.
- the toothing of the second satellite wheel 249 slides on the inner periphery of the cam 240 to lock the satellite wheel by a Maltese cross type connection, as outlined above in relation to the first satellite wheel 248 and the fixed toothed member 250.
- the gear ratio between the second planet wheel 249 and the pinion 268 of the third plate 266 is such that the latter rotates a quarter turn when the second satellite wheel 249 rotates a quarter turn. once a year.
- a boss 271 of the cam 270 is located opposite the third movable tooth 258 to position it in its extracted position.
- the inactive portion 272 of the cam 270 is located opposite the third movable tooth 258 to let it take its retracted position, under the effect of the forces exerted by the elastic portions 259 and 260.
- FIG. 4 represents a perspective view of the elements already illustrated in FIG. 1.
- the components of the display gear of the days of the week 400 are more particularly visible in this figure.
- the tooth 21 1 of the board 210 of the 24-hour mobile is arranged to drive a 401 input mobile of the wheels of the week at each complete turn of the mobile 24 hours on itself.
- the mobile input 401 comprises a reference 402, arranged to cooperate with the tooth 21 1 and secured to a pinion 404 meshing with a first wheel 406 of a friction wheel 407, including an example of a preferred structure will be described later in connection with Figure 5.
- the link between the reference 402 and the board 210 of the 24-hour mobile 201 is here again of the Maltese cross type, that is to say that the toothing of the reference 402 slides on the periphery of the board 210 except when the tooth
- the rotation of the first wheel 406 here causes that of a second wheel 408 of the friction wheel.
- the latter is engaged with a pinion 410 of a reduction gear wheel whose wheel 412 is arranged in engagement with the toothing of the display disc 3 days of the week.
- each day when the 24-hour mobile 201 performs a turn on itself, it causes the advancement of a step of the window 4 display days of the week.
- a jumper 413 is arranged to ensure the proper positioning of the wheel 412 of the mobile gear.
- a correction mechanism of the display of the days of the week is provided so as to act directly on the wheel 400.
- This correction mechanism comprises a control lever 414 intended to be pivotally mounted on a frame element of the movement.
- watchmaker corresponding by means of a shaft (not shown) cooperating with a hole 416 of the lever.
- a non-visible pusher is adapted to act on a receiving surface 418 to pivot the lever counterclockwise in FIG. 4.
- the lever 414 carries a spring blade 420 backed against a spout 422 at the free end of the lever.
- the lever is arranged in such a way that, when it pivots, it exerts a pressure on a star 423 with twelve branches carried by a correction mobile of the days 424, by means of the leaf spring 420, for the rotate one step in the clockwise direction.
- the correction mobile days includes a wheel 426 having a kinematic connection with the second wheel 408 of the friction wheel 407, through a reference 428. Therefore, each pressure exerted on the control lever 414 has the effect of advancing step 3 of displaying days of the week by one step.
- the input mobile 401 is held in a fixed angular position by the cooperation of the reference 402 with the periphery of the board 210.
- a friction mechanism is provided between these two wheels.
- the correction mobile 424 days is also driven in the clockwise rotation direction in FIG. 4.
- the blade spring 420 is arranged to elastically deform to allow the relevant branch of star 423 to pass in front of it.
- Figure 5 illustrates a preferred embodiment, without limitation, of such a friction mechanism, in an exploded perspective view of the friction wheel 407.
- the first and second wheels 406, 408 of the friction wheel are coupled via a ring 430, substantially star-shaped and rotationally fixed to the first wheel 406, and a spring 432, integral with the second wheel 408 and performing a function similar to that of a jumper.
- the spring 432 has a generally circular shape and comprises four S-shaped arms 434 carrying, two by two and between them, nozzles 436 intended to cooperate with the crown 430 to define stable relative angular positions between the two wheels. 406 and 408.
- Each of the nozzles 436 is carried by a frame 438 carrying a lug 440 intended to cooperate with a radial slot 442 formed in the second wheel 408, to ensure radial guidance of the nozzles 436 while maintaining the angular positioning of the spring relative to at the second wheel 408.
- the second wheel 408 which is driven, as a consequence of an action of a user on the control lever 414, which also causes a rotation of the display disc of the days of the week.
- the first wheel 406 is locked in rotation by the Maltese cross type connection made between the board 210 and the input mobile 401.
- the second wheel 408 rotates, it causes a deformation of the arms 434 of the spring 432 to allow the nozzles 436 to cross the teeth of the crown 430.
- the second wheel 408 rotates on itself while the first wheel 406 remains stationary.
- the mobile input 401 is arranged in direct contact with the correction mobile days 424, the latter being engaged with the display disc 3 days of the week through the pinion 410 and the wheel 412 of the mobile gear.
- the Maltese cross connection as described above between the board 210 of the 24-hour mobile and the mobile input 401, must be removed to allow correction of the day of the week, via the control lever 414, without affecting the operation of the mechanism of calendar.
- the reduction mobile carries a star with 7 branches arranged to cooperate with a positioning jumper, to ensure the correct positioning of the display disc 3 days of the week.
- the date-related information can be corrected by action on the winding stem 5, via a suitable date correction mechanism.
- the latter comprises a sliding pinion 450 mounted on a rocker 452 can be moved between first and second angular positions depending on the axial positions of the winding stem.
- the rocker 452 pivots clockwise to place the sliding pinion 450 in engagement with the toothing of the display disc 1 of the date.
- the sliding pinion is also placed in engagement with a correction wheel 454 having a kinematic connection with a sliding pinion 456, integral in rotation with the winding stem, in a conventional manner.
- Figure 6 shows a simplified front view and partial transparency illustrating the transmission provided between the date display disc 1 and the display disc months 2.
- the display disk of the date 1 carries a ring 601 driving months, visible in transparency under the disk 1 in Figure 6.
- This ring 601 cooperates with the pinion 602 of a mobile gear 604 under the form of a Maltese cross type as described above. It has indeed a periphery of constant radius such that the pinion can rotate most of the time, its teeth sliding on the periphery of the ring.
- the latter also has two teeth 606 and 608 for driving the pinion 602 in the anti-clockwise rotation of two steps per month, by way of non-limiting illustration.
- the reduction gear further comprises a wheel 610 integral with the gear 602 in rotation and arranged in engagement with the display disc of the months 2.
- a wheel 610 integral with the gear 602 in rotation and arranged in engagement with the display disc of the months 2.
- the angular position of the reduction gear 604 is further enhanced here by an optional jumper 612.
- the wheel 610 is engaged with a reference 701 constituting the entry point of the cog in leap years 700 which will not be described in detail. Indeed, this wheel has a number of mobile adapted to allow the multiplication of information relating to the change of months to an indication of leap years that spanned a cycle of 48 months.
- Figures 7 and 8 illustrate partial views of a watch movement according to a second preferred embodiment of the present invention.
- the unchanged components compared to the first embodiment which has just been described bear the same numerical references to facilitate understanding of the mechanism according to the second embodiment.
- the 24-hour mobile 201 is unchanged with reference to the first embodiment. It is intended to train a mobile program 522 in such a way that the number of days of the different months is taken into account to control the display of the calendar, similarly to what has been described in relation with the first embodiment.
- the program mobile 522 comprises a first board 524 having a first gear 525 of 31 teeth.
- the first board has a first support surface 526 on which is arranged a first elastic member 527 associated with first and second movable teeth 528 and 529 correction of short months, so as to act on them and maintain them in a retracted configuration.
- the elastic member 527 has the general shape of an open ring comprising a frame 530, intended to be assembled to the first board 524 and having two arms in the form of a portion of a circle whose free end of each is associated with one of the movable teeth, being housed in a fitted slot in the corresponding movable tooth.
- the frame 530 here substantially diametrically opposed to the teeth 528, 529, has two holes intended to cooperate with the fingers 532, carried by the first board 524, to ensure the correct positioning and maintenance of the elastic member 527 on the first board.
- the elastic member is made in two substantially symmetrical parts, without departing from the scope of the invention.
- Each of the teeth 528, 529 is arranged in a slot 534, formed in the first board, to provide radial guidance of the teeth when they are moved between a first position, retracted, and a second position, extracted.
- the first board has an annular housing 536 for housing a mobile 538 months.
- the mobile 538 months has the general shape of a two-level crown.
- a first level, intended to be placed in the housing 536, fulfills the function of a cam 540 whose periphery has a variable external radius. More specifically, the periphery of the cam 540 has five inactive portions, of the same radius, separated from each other by four simple bosses 541, associated with the months of April, June, September and November, and a double boss 542 associated with the February. It will be noted that two inactive portions, associated respectively with the months of July-August and December-January, have a double length compared to the three others.
- the function of the cam 540 is similar to that of the cam 240 described above, in connection with the first embodiment.
- the periphery of the cam 540 has a tooth 544 arranged projecting and whose function will also be explained later.
- the second level of the mobile of the months 538 has an internal toothing 545.
- the first board 524 also includes first and second fingers 546, 547 intended to serve as a support, respectively, for first and second planet wheels 548 and 549.
- a fixed toothed member 550 is arranged in the center of the first board 524, the latter being assembled to a frame member of the non-illustrated watch movement.
- the toothed organ carries a single tooth
- the rotation of the first satellite wheel 548 causes a rotation of the mobile 538 months with reference to the first board 524, by cooperation with its internal toothing 545.
- the rotation of the mobile 538 months causes that of the second satellite wheel 549 by cooperation of the latter with the tooth 544.
- the second satellite wheel 549 advantageously comprises a Maltese cross 553 (distinguishable in transparency) which cooperates with the bottom of the toothing 545 to lock the second wheel 549 as long as the tooth 544 does not engage in the Maltese cross 553 to rotate it.
- a second intermediate board 552 is secured to the first board 524 by means of screws 554, in particular to maintain assembled all that has just been described.
- the second board 552 has a support surface 556 on which is arranged a second elastic member 557, arranged to act on a third movable tooth 558 leap correction.
- the second elastic member 557 comprises a frame 559 from which extends an elastic finger 560, substantially in the form of a portion of a circle and whose free end is housed in a slot adapted to the third movable tooth 558, to keep the latter in a retracted configuration.
- the frame also has holes 561 for cooperating with fingers 562 formed on the second board 552 to ensure the correct positioning and maintenance of the second elastic member 557 on the second board.
- the third tooth 558 is arranged in an additional slot 564, formed in the second board, to ensure radial guidance of the tooth when moved between a first position, retracted, and a second position, extracted.
- a correction mobile 566 is supported by the second board 552, so as to be free to rotate relative thereto.
- a first level of the correction mobile 566 includes a set of teeth
- a second level of the correction mobile 566 comprises a second cam 570, similar to the first cam 540, and whose periphery has a variable external radius. More specifically, the periphery of the cam 570 has six bosses 571, with reference to a base radius, diametrically opposed in pairs and arranged in such a way that two inactive portions 572, diametrically opposite one another, are provided to define two series of three successive bosses.
- a closure cover 574 is provided to hold the assembled assembly, being secured to the first board 524 by means of the screws 554.
- Figure 8 shows a top view illustrating the nature of the cooperation between some of the components just described, similar to the view of Figure 3 for the first embodiment.
- the second cam 570 here has cycles of 8 years with reference to the second plate 552, by way of non-limiting illustration, while the mechanism according to the first embodiment is arranged in such a way that the cam 270 presents 4-year cycles with reference to the second board 252.
- a counting device for a calendar mechanism comprising a control mechanism comprising a mobile months, mounted rotating on a first board of a mobile program and carrying a variable radius cam arranged to cooperate with a movable tooth to define the position, according to the number of days of the current month, without departing from the scope of the present invention.
- the forms illustrated and described for the cams 240, 270, 540 and 570 are illustrative as well as their mode of cooperation with the corresponding movable teeth.
- at least one of the cams has the shape of an irregular ring but constant thickness and that this ring is engaged in a groove formed transversely in each tooth corresponding instead of being simply arranged at the rear of the movable tooth concerned to push it.
- the cam rotates and its portion engaged in a tooth sees its radius vary, it causes a radial displacement of the movable tooth between its first and second positions, or in both directions.
- the cam could have alternating recesses and columns, in the manner of a column wheel, in the case of a simple or annual calendar, without departing from the scope of the invention.
- the first elastic member 227, 527 can be made in one or more parts without affecting the implementation of the present invention, the movable teeth can in particular be made in one piece with him or not.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14729694.1A EP3008523B1 (fr) | 2013-06-14 | 2014-06-13 | Mécanisme de calendrier pour mouvement horloger |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP13172171.4A EP2813902A1 (fr) | 2013-06-14 | 2013-06-14 | Mécanisme de calendrier pour mouvement horloger |
EP14729694.1A EP3008523B1 (fr) | 2013-06-14 | 2014-06-13 | Mécanisme de calendrier pour mouvement horloger |
PCT/EP2014/062484 WO2014198954A2 (fr) | 2013-06-14 | 2014-06-13 | Mecanisme de calendrier pour mouvement horloger |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3008523A2 true EP3008523A2 (fr) | 2016-04-20 |
EP3008523B1 EP3008523B1 (fr) | 2020-01-22 |
Family
ID=48628331
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13172171.4A Withdrawn EP2813902A1 (fr) | 2013-06-14 | 2013-06-14 | Mécanisme de calendrier pour mouvement horloger |
EP14729694.1A Active EP3008523B1 (fr) | 2013-06-14 | 2014-06-13 | Mécanisme de calendrier pour mouvement horloger |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13172171.4A Withdrawn EP2813902A1 (fr) | 2013-06-14 | 2013-06-14 | Mécanisme de calendrier pour mouvement horloger |
Country Status (3)
Country | Link |
---|---|
EP (2) | EP2813902A1 (fr) |
CN (1) | CN105683844B (fr) |
WO (1) | WO2014198954A2 (fr) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH715119A1 (fr) * | 2018-06-22 | 2019-12-30 | Montblanc Montre Sa | Mécanisme de quantième perpétuel pour pièce d'horlogerie. |
EP3608729A1 (fr) * | 2018-08-09 | 2020-02-12 | Rolex Sa | Dispositif de calendrier horloger |
CH715471B1 (fr) * | 2018-10-25 | 2023-02-28 | Lvmh Swiss Mft Sa | Mécanisme horloger pour quantième, notamment pour quantième perpétuel. |
IT201900004735A1 (it) * | 2019-03-29 | 2020-09-29 | La Vallee S R L | Dispositivo indicatore per orologeria |
JP2022099297A (ja) * | 2020-12-22 | 2022-07-04 | ロレックス・ソシエテ・アノニム | ノッチシステム用ばね及び時計ノッチシステム |
CH718699A1 (fr) * | 2021-06-01 | 2022-12-15 | Richemont Int Sa | Système d'affichage de quantième perpétuel à correction séculaire. |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH684815B5 (fr) * | 1993-07-15 | 1995-07-14 | Longines Montres Comp D | Mécanisme de quantième annuel pour pièce d'horlogerie. |
ATE415648T1 (de) * | 2002-04-02 | 2008-12-15 | Nardin Ulysse Sa | Vorrichtung mit programmrad für den mechanismus eines ewigen kalenders sowie uhr mit solchem mechanismus |
CN100395672C (zh) * | 2004-03-16 | 2008-06-18 | 伍凌宇 | 手表万年历机构 |
EP1868047A1 (fr) * | 2006-06-12 | 2007-12-19 | Vaucher Manufacture Fleurier SA | Pièce d'horlogerie munie d'un mécanisme de quantième |
CH699102B1 (fr) * | 2008-07-10 | 2015-03-31 | Richemont Int Sa | Mobile d'entraînement bidirectionnel, pièce d'horlogerie le comportant et mécanisme indicateur de quantième ou de mois. |
-
2013
- 2013-06-14 EP EP13172171.4A patent/EP2813902A1/fr not_active Withdrawn
-
2014
- 2014-06-13 CN CN201480033834.0A patent/CN105683844B/zh not_active Expired - Fee Related
- 2014-06-13 WO PCT/EP2014/062484 patent/WO2014198954A2/fr active Application Filing
- 2014-06-13 EP EP14729694.1A patent/EP3008523B1/fr active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2014198954A3 * |
Also Published As
Publication number | Publication date |
---|---|
WO2014198954A2 (fr) | 2014-12-18 |
EP3008523B1 (fr) | 2020-01-22 |
EP2813902A1 (fr) | 2014-12-17 |
WO2014198954A3 (fr) | 2016-01-14 |
CN105683844B (zh) | 2019-03-19 |
CN105683844A (zh) | 2016-06-15 |
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