EP3629101B1 - Uhranzeigemechanismus - Google Patents

Uhranzeigemechanismus Download PDF

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Publication number
EP3629101B1
EP3629101B1 EP18196792.8A EP18196792A EP3629101B1 EP 3629101 B1 EP3629101 B1 EP 3629101B1 EP 18196792 A EP18196792 A EP 18196792A EP 3629101 B1 EP3629101 B1 EP 3629101B1
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EP
European Patent Office
Prior art keywords
rotation
lever arm
display
rocker
respect
Prior art date
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EP18196792.8A
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English (en)
French (fr)
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EP3629101A1 (de
Inventor
James Hide
Nicolas Dehon
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Patek Philippe SA Geneve
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Patek Philippe SA Geneve
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Priority to EP18196792.8A priority Critical patent/EP3629101B1/de
Publication of EP3629101A1 publication Critical patent/EP3629101A1/de
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    • 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

Definitions

  • the present invention relates to a watchmaking display mechanism, typically for date display.
  • a date display consists of a disc carried by a date star, this disc bearing a scale comprising thirty-one indications uniformly distributed over a circumference and moving opposite an aperture made in the dial.
  • Similar mechanisms are also known in which the disc and date star assembly is replaced by an annular disc with internal teeth bearing the date indications directly.
  • the disc In order to be able to produce indications of relatively large size, the disc is generally made as large as possible and carries its indications on the largest possible circumference, which leaves little freedom as to the position of the aperture which must be positioned in such a way offset around the circumference of the dial.
  • the disc or the date star is typically driven by a pinion or by a finger and possibly positioned by a jumper depending on whether it is a dragging, semi-instantaneous or instantaneous mechanism.
  • date display mechanisms have been developed to allow a display close to the center of the dial while maintaining relatively large indications.
  • Such a mechanism comprises many cogs and is relatively complex to implement.
  • the date displayed through the window is on two different discs, which is not very aesthetic.
  • An object of the present invention is to propose a display mechanism, typically for a date display, simple to produce and allowing a display of relatively large size while offering great freedom as to the position of the window on the dial, allowing for example its positioning towards the center of the dial.
  • the invention proposes for this purpose a watchmaking display mechanism comprising a frame, a rocker, at least one toothed wheel carried by said rocker and movable in rotation with respect to the latter, the or each of said toothed wheels carrying a disk of display comprising indications intended to be read through an aperture whose position is fixed relative to the frame, and stops which are also fixed relative to the frame, said rocker being intended to perform alternating movements in rotation between two predetermined positions around an axis of rotation fixed relative to the frame, the whole being arranged so that, between two consecutive changes in the direction of rotation of the rocker, the or each of the toothed wheels that it carries is rotated through a predetermined angle relative to the rocker under the effect of the cooperation of at least one of its teeth with at least one of said stops, this or these rotations making it possible to position the or each of the discs s display relative to the latch so that an indication of the or one of the discs is fully readable through the window when the latch is in at least one of said predetermined positions.
  • the rotation of the or each of the toothed wheels of the mechanism according to the invention by a predetermined angle with respect to the rocker corresponds to a rotation around an axis of rotation, movable with respect to the frame and fixed with respect to the rocker, this axis corresponding to the center of the toothed wheel considered in top view. It is therefore an axis distinct from the axis of rotation of the rocker.
  • each of the teeth of a given toothed wheel comprises a first flank extending substantially radially with respect to the center of this wheel and a second flank forming an acute angle with the first flank.
  • said first flank constitutes a front flank of the tooth and said second flank constitutes a rear flank of the tooth.
  • front flank and rear flank are given in relation to the direction of rotation of the wheel considered in normal operation, the front flank being the one exposed first during rotation of the wheel in normal operation.
  • Display disc is understood to mean a display means including both a complete display disc and an annular display disc.
  • the disk in question is of course not necessarily circular.
  • a watchmaking display mechanism 1 comprises a frame 100 such as a plate or a bridge, a rocker 101, a toothed wheel 102 carried by said rocker 101 and frictionally mounted on this last, a display disc 105, a first 103a and a second 103b upper stops and a first 104a and a second 104b lower stops fixed relative to the frame 100.
  • the toothed wheel 102 of the mechanism 1 is mounted by friction on the rocker 101 so as to be able to pivot with respect to the latter around a (virtual) axis of rotation A3, movable with respect to the frame 100 and fixed with respect to the rocker. 101, when subjected to sufficient torque.
  • This axis A3 corresponds to the center of the toothed wheel 102 considered in top view. It is therefore a separate axis from the axis of rotation A1 of the flip-flop 101.
  • the display disc 105 is carried by the toothed wheel 102. It is typically made integral in rotation with the latter, for example by gluing, driving in, soldering or screwing or by any other suitable assembly technique, so that the movements of rotation of the toothed wheel 102 are transmitted to the display disc 105.
  • the display disc 105 comprises a scale 106 comprising indications corresponding to the dates of the month distributed over two concentric rings of the disc 105, these being intended to be read through a window 107 whose position is fixed relative to the frame 100.
  • the window 107 is typically made in a dial positioned above the display disc 105. In the figures, although such a dial is not represented for reasons of readability, the position of the aperture 107 is materialized.
  • Rocker 101 is driven in alternating rotational movements around an axis of rotation A1 (virtual), fixed with respect to frame 100, by means of a drive mechanism 109 kinematically connected to the going train of a movement watchmaker (not shown).
  • rocker 101 there are two predetermined positions of rocker 101 relative to frame 100 in which a date indication can be fully readable through window 107, we will speak of reading positions. These two positions correspond to the two extreme positions taken by rocker 101 during operation of the mechanism. They define the angular movement of rocker 101. In this example, it is approximately 12°. These extreme positions are reached at each alternation of the direction of rotation of the flip-flop 101.
  • the figure 1 , 4a and 4h illustrate a first of these positions, the 4d figure illustrates a second of these positions.
  • the reading is done on the outer ring of the display disc 105 and in the second of said reading positions, the reading is on the inner ring.
  • the rotation of the display disc 105 relative to the rocker 101 occurs under the effect of the cooperation of some of the stops with the teeth of the toothed wheel 102 during the rotational movements of the rocker 101.
  • the indications of the numbers on the display disc 105 are arranged in ascending order in the opposite direction to the direction of rotation of the toothed wheel 102, that is to say in the counterclockwise direction on the display disc 105, alternating between the divisions of the inner ring and those of the outer ring.
  • the number "1" is located on a division of the inner ring and the number “2” is on the division of the outer ring comprising an angular sector in common with the division bearing the number "1" and offset relative to it by an angle ⁇ counterclockwise.
  • rocker 101 is driven in alternating rotational movements around an axis of rotation A1 fixed with respect to frame 100 by means of a drive mechanism 109 kinematically connected to a gear train for finishing a movement watchmaker (not shown).
  • the drive mechanism 109 shown in picture 3 typically comprises a drive wheel 109a kinematically connected to the going train of a watch movement, said drive wheel 109a carrying an eccentric stud 109b.
  • the pin 109b passes through an oblong opening 101a that includes the rocker 101, said opening 101a being arranged so that, when the drive wheel 109a rotates, the pin 109b drives the rocker 101 alternately upwards then downwards. .
  • the aforementioned to-and-fro movements cause alternating rotational movements of the rocker 101 around of the axis of rotation A1.
  • the amplitude of the alternating rotational movements is constant and identical in the direction clockwise and counterclockwise. It depends in particular on the radius separating the eccentric pin 109b from the center of rotation of the drive wheel 109a as well as the position of the oblong opening 101a in the rocker 101.
  • tooth #X the tooth of the gear wheel 102 pointing in the direction of the indication bearing the #X in each of the configurations illustrated.
  • the horizontal line "X" appearing in the central opening of the display disk 105 at the figures 4a to 4h is a purely illustrative reference, fixed with respect to the frame 100, making it possible to highlight the relative movements of the rocker 101 with respect to the frame 100 during the operation of the display mechanism 1.
  • the display mechanism 1 displays, through the window 107, the date of the month "24" located on the outer ring of the display disc 105, the indication "24" is fully readable through the window 107.
  • Latch 101 is in a first of two read positions. It has just completed its clockwise rotation and is about to begin its counter-clockwise rotation. Tooth no. 4 of wheel 102 has its rear flank in contact with a first 104a of the lower stops of the mechanism and tooth no. 10 has its front flank in abutment against the second 104b of the lower stops of mechanism 1.
  • the rocker 101 begins its rotation in the counterclockwise direction, around the axis A1.
  • the position of the second 104b of the lower stops as well as the shape of the teeth of the toothed wheel 102 and in particular the shape of their front flank, are such that the rotation of the lever 101 counterclockwise, from this position, can be done with very little or even no rotation of the toothed wheel 102 relative to the rocker 101.
  • the toothed wheel 102 is substantially immobile relative to the rocker 101 throughout its rotation between the state shown in figure 4a and the state shown in figure 4b .
  • the toothed wheel 102 is asymmetrical, it comprises sixteen identical teeth.
  • Each of the teeth of sprocket 102 includes a front flank extending radially from the center of wheel 102 and a rear flank forming an acute angle with the front flank.
  • Such a shape for the front flank can cause the toothed wheel to rotate slightly relative to the rocker as it rotates. These are just parasitic movements. For example, an arched front flank could limit or even completely eliminate these parasitic movements.
  • this upper drive stop 103a comes into contact with the bottom of the toothing of the toothed wheel 102
  • the front flank of tooth No. 26 of the toothed wheel 102 comes into contact with a second 103b of the upper stops.
  • This stop 103b will be called “upper locking stop” which participates in the blocking of the rotation of the toothed wheel 102 relative to the rocker 101.
  • the display mechanism 1 displays the date of the month "25" located on the inner ring of the display disc 105, the indication "25" is entirely readable through the aperture 107.
  • the rocker 101 is located in the second of the two reading positions. It has just completed its counter-clockwise rotation and is about to begin its clockwise rotation. This configuration, shown in 4d figure is similar to that shown in figure 4a .
  • the rocker begins its rotation in the clockwise direction.
  • the start of the rotation of the rocker 101 in the clockwise direction can be done, from this position, with very little or even no rotation of the toothed wheel 102 with respect to rocker 101, the front flank of tooth no. 26 moving along the upper locking abutment 103b, as illustrated in figure 4e .
  • By analogy to what has been described above by modifying the shape of the front sides of the toothed wheel 102, for example by making them arcuate, it is possible to limit or even completely cancel the rotational movements of the toothed wheel. 102 with respect to the rocker 101, when the latter begins its rotation.
  • the toothed wheel 102 is substantially stationary relative to the flip-flop 101 throughout its rotation between the state shown in 4d figure and the state shown in figure 4f . To the figure 4e , it can be seen that, due to the rotation of the rocker 101, the indication "25" is no longer fully readable through the window 107.
  • the figure 4f illustrates when the rear flank of tooth #6 of sprocket 102 comes into contact with the first 104a of the lower stops.
  • this first lower stop 104a is called lower drive stop.
  • the figure 4g corresponds to a freeze frame during this rotation.
  • this lower drive stop 104a comes into contact with the bottom of the toothing of the toothed wheel 102
  • the front flank of tooth No. 12 of the toothed wheel 102 comes into contact with the second 104b of the lower stops. This prevents further rotation of the toothed wheel 102 with respect to the rocker 101.
  • this second lower stop 104b is called lower locking stop.
  • the display mechanism 1 displays the date of the month "26" located on the outer ring of indications of the display disc 105, the indication "26" is fully readable through the aperture 107.
  • the Rocker 101 has just completed its rotation in the clockwise direction and is about to begin a rotation in the counterclockwise direction again.
  • This configuration, shown in figure 4 o'clock is almost identical to that illustrated in figure 4a and corresponds to the same reading position of flip-flop 101 that has been defined as the first reading position.
  • the steps described above are then repeated to pass from the display of the date 26 to the date "27” then to the date "28” and so on by shifting the numbers of the teeth by two units on each return trip of the rocker 101.
  • the display mechanism 1 is arranged to indicate “set” in the window 107. This makes it possible to alert the user to the fact that an action on his part is required. Indeed, if the month is a month of thirty-one days, the user can manually rotate the display disc 105 by means of an actuating rod driving the rocker 101 in movement until the indication bearing the number “31” is entirely legible through the aperture. If the month is a month of thirty days, the user can manually rotate the display disc 105 further so that the indication "1" is fully readable through the window 107.
  • the arrangement of display mechanism 1 according to the invention is such that each time rocker 101 passes from one reading position to another, toothed wheel 102 moves by an angle ⁇ , corresponding to an angular sector 110 of the display disc 105, relative to the rocker 101. It therefore performs on each return trip a displacement of an angle equal to 2 ⁇ corresponding to two angular sectors 110 of the display disc 105.
  • the toothed wheel 102 is designed so that the angle ⁇ defined by an angular sector 110 corresponds to a half step of the toothed wheel.
  • the toothed wheel 102 of the mechanism 1 typically comprises sixteen teeth separated by a bottom whose length is the same as that of the tooth at the level of the foot circle.
  • the toothed wheel 102 corresponds to a wheel with thirty-two identical teeth in the form of saw teeth, one tooth out of two of which has been removed.
  • the display mechanism 1 according to the first embodiment of the invention has the advantage of allowing a display of relatively large size by reducing the space used to achieve this compared to a mechanism according to the prior art. Due to this smaller size, such a mechanism makes it possible to have a display of equivalent size to that which can be obtained with a display mechanism with an eccentric aperture of the dial according to the prior art while arranging the aperture as desired on the dial, for example in the center of the dial. In addition, in each reading position, the date displayed through the window can be read on a single disc at a time.
  • a watchmaking display mechanism 2 comprises a frame 200 such as a plate or a bridge, a rocker 201, two toothed wheels 2021, 2022 frictionally mounted on said rocker 201 so to be able to pivot relative to the latter when they are subjected to sufficient torques, and two display discs 2051, 2052. It also comprises an upper locking stop 2031b, 2032b and an upper drive stop 2031a, 2032a as well a lower locking stop 2041b, 2042b and a lower drive stop 2041a, 2042a for each of said two toothed wheels 2021, 2022, i.e. eight stops, all fixed relative to the frame 200.
  • a first 2021 of the toothed wheels carries a first display disc 2051 which will be called “odd display disc”.
  • This disk 2051 is typically an annular disk. It has a 2061 scale with indications corresponding to the odd dates of the month, ranging from 1 to 29 inclusive, as well as a “set” indication. These indications are uniformly distributed over a circumference of said display disc 2051 and are intended to be read through an aperture 207 whose position is fixed relative to the frame 200.
  • the aperture 207 is typically made in a dial positioned by- above the display discs 2051, 2052. In the figures, although such a dial is not shown for reasons of readability, the position of the counter 207 is materialized.
  • a second 2022 of the toothed wheels carries a second display disc 2052 which will be called the “peer display disc”. peers ".
  • This disk 2052 is typically an annular disk. It features a 2062 graduation with indications corresponding to even-numbered dates of the month ranging from 2 to 30 inclusive. It can also, when the latter is not carried by the odd number display disc 2051, also carry the date “31”. These indications 2062 are uniformly distributed over a circumference of said disc 2052 and are intended to be read through window 207.
  • the cogwheels 2021, 2022 respectively of odd and even are identical. They are typically identical to that of the display mechanism 1 according to the first embodiment of the invention.
  • the toothed wheels of the odd 2021 and the even 2022 of the mechanism 2 are capable of pivoting with respect to the rocker 201 around axes of rotation (virtual) respectively of the odd A4 and the even A5.
  • These odd A4 and even A5 axes are movable with respect to the frame 200 and fixed with respect to the rocker 201, and correspond respectively to the centers of the toothed wheels 2021, 2022 considered in top view. They are distinct from the (virtual) axis of rotation A2 of the rocker 201.
  • each of the display discs 2051, 2052 is made integral in rotation with the toothed wheel 2021, 2022 which carries it, for example by gluing, driving in, brazing, screwing or by any other suitable assembly technique, so that the rotational movements of each of the toothed wheels 2021, 2022 are transmitted to the display disk 2051, 2052 which it carries.
  • Each of the toothed wheels 2021, 2022 comprises sixteen identical teeth.
  • Each of the teeth of a given toothed wheel 2021, 2022 comprises a front flank extending radially with respect to the center of said toothed wheel 2021, 2022 and a rear flank forming an acute angle with the front flank.
  • an abutment may be qualified as an even abutment or an odd abutment depending on the toothed wheel 2021, 2022 with which it is associated.
  • Rocker 201 is here in one piece. As a variant, it could be a rocker in several parts integral with each other. This rocker 201 is driven in alternating rotational movements around an axis of rotation A2 fixed relative to the frame 200 by means of a drive mechanism (not shown) kinematically connected to the going train of a watch movement (also not shown). This may typically be the same drive mechanism (109) used in the first embodiment of the invention.
  • the read In a first of said read positions, the read is on the even display disc 2052 and in the second of said read positions, the read is on the odd display disc 2051.
  • each of the display discs 2051, 2052 relative to the rocker 201 occurs under the effect of the cooperation of the drive stops 2031a, 2041a, 2032a, 2042a with the teeth of the corresponding toothed wheel 2021, 2022 , during the rotational movements of the rocker 201.
  • the indications of the odd numbers 2061 on the odd number display disc 2051 are arranged in ascending order in the opposite direction to the direction of rotation of the odd number wheel 2021 i.e. counterclockwise on the disc. odd number display 2051, the indication “set” being interposed between the indications “1” and “29”.
  • the indications of even numbers 2062 on the evens display disc 2052 are arranged in ascending order in the opposite direction to the direction of rotation of the evens wheel 2021 i.e. clockwise on the disc. peer display 2052.
  • rocker 201 is driven in alternating rotational movements around axis of rotation A2 by means of a drive mechanism kinematically connected to the going train of a watch movement (not shown).
  • the display mechanism 2 operates according to the same principle as the display mechanism 1 according to the first embodiment of the invention.
  • the toothed wheels which are the even wheel 2022 and the odd wheel 2021 cooperate with the drive stops 2032a, 2042a, 2031a, 2041a and blocking 2032b, 2042b, 2031b, 2041b of the even and odd during back and forth movements of the rocker 201.
  • This causes the rotation of said toothed wheels 2021, 2022 as well as the discs display 2051, 2052 that they carry, clockwise for the odd wheel 2021 and counterclockwise for the even wheel 2022.
  • the odd disc 2051 and on the even disc 2052 are the odd disc 2051 and on the even disc 2052.
  • tooth n°X the tooth of the toothed wheel concerned (odd 2021 or even 2022) pointing in the direction of the indication bearing the n°X in each of the configurations illustrated.
  • the display mechanism 2 displays, through the window 207, the date of the month "2" located on the peer display disc 2052, the indication "2" is entirely readable through the window 207.
  • the rocker 201 is in a first of two read positions. It has just completed its counter-clockwise rotation and is about to begin its clockwise rotation. Tooth No. 21 of the odd wheel 2021 has its rear flank in contact with the lower odd drive stop 2041a and its front flank tooth No. 27 abuts against the lower odd blocking stop 2041b. Similarly, tooth No. 31 of the peer wheel 2022 has its rear flank in contact with the upper peer drive stop 2032a and its front flank tooth No. 6 has its front flank in abutment against the upper peer locking stop. 2032b.
  • Rocker 201 begins its rotation clockwise around axis A2.
  • the position of the lower odd blocking stop 2041b as well that the shape of the teeth of the odd wheel 2021 and in particular the shape of their front flank, are such that the rotation of the rocker 201 clockwise, from this position, can be done with very little or even no rotation of the toothed wheel 2021 carrying the disc 2051 of the odds with respect to the rocker 201.
  • the toothed wheel of the odds 2021 is substantially immobile with respect to the rocker 201 throughout its rotation between the state represented in figure 5a and the state shown in figure 5b .
  • the position of the upper peer locking stop 2032b as well as the shape of the teeth of the peer wheel 2022 and in particular the shape of their front flank, are such that the rotation of the rocker 201 clockwise, from the position shown in figure 5a , can be done with very little or even no rotation of the toothed wheel 2022 carrying the disk of the peers 2052 relative to the rocker 201.
  • the toothed wheel of the peers 2022 is substantially immobile relative to the rocker 201 throughout its rotation between the state shown in figure 5a and the state shown in figure 5c .
  • figure 5c corresponds to a freeze frame during this rotation.
  • the display mechanism displays the date of the month "3" located on the odd number display disc, the indication "3" is entirely readable through the aperture 207.
  • the rocker 201 is located in the second of the two reading positions. It has just completed its clockwise rotation and is about to begin its counter-clockwise rotation.
  • the rocker 201 begins its rotation in the counterclockwise direction.
  • the initiation of the rotation of the rocker 201 in the counterclockwise direction can be done, from this position, with very little or even no rotation of the wheels.
  • the peer gear 2022 is substantially immobile with respect to the latch during the rotation of the latch 201 between the state shown in figure 5d and the state shown in figure 5e .
  • the indication "3" is no longer readable through the aperture 207.
  • the figure 5e illustrates when the trailing flank of tooth #2 of peer wheel 2022 comes into contact with upper peer drive stop 2032a.
  • the display mechanism displays the date of the month "4" located on the peer display disc 2052, the indication "4" is entirely readable through the window 207.
  • the flip-flop 201 is again in the first of two reading positions. It has just completed its counter-clockwise rotation and is about to begin its clockwise rotation.
  • the display mechanism 2 is arranged to indicate “set” in the window 207. This makes it possible to alert the user to the fact that an action on his part is required. Indeed, if the month is a month of thirty-one days, the user can manually rotate the display discs 2051, 2052 by means of an actuating rod causing the rocker 201 to move until indication bearing the number "31" is entirely readable through window 207. If the month is a month of thirty days, the user can manually rotate display discs 2051, 2052 further to that the indication bearing the number "1" is fully readable through the window 207.
  • the arrangement of the display mechanism 2 according to the invention is such that each time the rocker 201 passes from one reading position to another, each of the toothed wheels 2021, 2022 performs a displacement of an angle ⁇ /2, corresponding to a half angular sector 2101, 2102 of angle ⁇ of the display disc 2051, 2052 that it carries, relative to the flip-flop 201. Each of the toothed wheels 2021, 2022 therefore performs on each return return a displacement of an angle equal to ⁇ corresponding to an angular sector 2101, 2102 of the corresponding display disc 2051, 2052.
  • Each of the toothed wheels 2021, 2022 is designed so that the angle ⁇ defined by an angular sector 2101, 2012 corresponds to one pitch of the toothed wheel.
  • the toothed wheel 2021 of the mechanism 2 typically comprises sixteen teeth separated by a bottom whose length is the same as that of the tooth at the level of the root circle.
  • the 2021 gear wheel corresponds to a wheel with thirty-two identical teeth in the shape of saw teeth, of which every other tooth has been removed.
  • the display mechanism 2 according to the second embodiment of the invention has the advantage of allowing a display of relatively large size by reducing the space used to achieve this compared to a mechanism according to the prior art. Because of this less bulk, such a mechanism makes it possible to have a display of equivalent size to that which can be obtained with a display mechanism with an eccentric window of the dial according to the prior art while arranging the window at leisure on the dial, for example in the center of the dial. In addition, in each reading position, the date displayed through the window can be read on a single disc at a time.
  • the display mechanism according to the invention has the advantage of limiting the number of gears necessary for rotating one or more display discs.
  • the display mechanism according to the invention can operate in dragging or jumping fashion. Preferably, it works by jumps.
  • the rocker of the mechanism remains in a given reading position for a little less than 24 hours, typically for more than 23h59minutes and the transition from one reading position to another of the rocker takes place in a few seconds or even in a few milliseconds. , for example in about 30ms.
  • This has the advantage of allowing correct display of the date for as long as possible and this also limits the risk of the mechanism becoming out of adjustment in the event of an impact at a time when the lever is between two reading positions.
  • the rocker has an angular movement of less than 360°, preferably less than a value X with X between 300° and 359°, preferably X between 240° and 300°, preferably X between 180° and 240°, preferably X between 120° and 180°, preferably X between 60° and 120°, more preferably X between 1° and 60°.
  • Mechanisms in which the rocker has a small angular displacement are preferred because they require less surface area than those associated with a large angular displacement.
  • a small angular movement has the advantage of limiting the duration of the phase during which the rocker is between two reading positions and phase during which there is a risk of the mechanism becoming out of adjustment in the event of an impact.
  • flanks of the toothed wheel(s) of the display mechanism according to the invention could also have shapes other than those previously described.
  • any shape allowing the rotation of the toothed wheel to be blocked when one of the front flanks is in abutment against the locking abutment is possible
  • any shape allowing the drive in rotation of the toothed wheel during the interaction of one of the rear flanks with a drive stop is possible.
  • the display of the mechanism according to the invention may be different from a date display. It may, for example, typically be a display indicating the current month, day and night, hours, minutes or seconds, signs of the zodiac or any other indication of a calendar of any culture, power reserve, leap years, or any other display.
  • the drive mechanism of the rocker in alternating rotational movements around a fixed axis of rotation may itself be different from that represented in the figure 1 , any mechanism allowing this function being conceivable.
  • the position of the drive and locking stops may vary. A person skilled in the art will be able to move them while ensuring that they perform their respective functions, namely the rotation of the toothed wheel(s) carrying the display means and the blocking of the rotation of these same wheels at the beyond the angle of rotation necessary for the proper functioning of the mechanism.
  • the user will be able to manually rotate the display disc(s) of the mechanism by means of an actuating rod acting on the movements of the rocker to position the indication desired in the counter.
  • another possibility for adjusting the date would consist in providing a mechanism allowing the or each of the display discs to be rotated directly with respect to the gear wheel associated with it. In this case, rather than being glued, chased, brazed or screwed onto the toothed wheel which carries it, the or each of the display discs could be friction mounted on said toothed wheel.
  • the toothed wheel or wheels are on a single level and the stops are all on this same level.
  • the toothed wheel(s) as well as the stops with which they are supposed to interact can be distributed over several levels.

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Claims (12)

  1. Uhranzeigemechanismus (1; 2), der ein Gestell (100; 200), eine Wippe (101; 201), mindestens ein Rad (102; 2021, 2022), das von der Wippe (101; 201) getragen wird und in Bezug auf diese letztere drehbeweglich ist, wobei das oder jedes der Räder (102; 2021, 2022) eine Anzeigescheibe (105; 2051, 2052) trägt, die Angaben (106; 2061, 2062) umfasst, die dazu bestimmt sind, durch ein Fensterchen (107; 207) gelesen zu werden, dessen Position in Bezug auf das Gestell (100; 200) fest ist, und Anschläge (103a, 104a; 2031a, 2041a, 2032a, 2042a) umfasst, die auch in Bezug auf das Gestell (100; 200) fest sind, wobei die Wippe (101; 201) dazu bestimmt ist, abwechselnde Drehbewegungen zwischen zwei vorbestimmten Positionen um eine Drehachse (A1; A2) durchzuführen, die in Bezug auf das Gestell (100; 200) fest ist,
    dadurch gekennzeichnet, dass das mindestens eine Rad (102; 2021, 2022) gezahnt ist, und dadurch, dass das Ganze gestaltet ist, damit zwischen zwei aufeinanderfolgenden Änderungen der Drehrichtung der Wippe (101; 201), das oder jedes der Zahnräder (102; 2021, 2022), die sie trägt, unter der Wirkung des Zusammenwirkens von mindestens einem seiner Zähne mit mindestens einem der Anschläge (103a, 104a; 2031a, 2041a, 2032a, 2042a) um einen vorbestimmten Winkel in Bezug auf die Wippe (101; 201) drehbar angetrieben wird, wobei diese eine oder mehreren Drehungen das Positionieren der oder jeder der Anzeigescheiben (105; 2051, 2052) in Bezug auf die Wippe (101; 201) ermöglicht bzw. ermöglichen, damit eine Angabe der oder einer der Scheiben vollständig durch das Fensterchen (107; 207) sichtbar ist, wenn die Wippe (101; 201) sich in mindestens einer der vorbestimmten Positionen befindet.
  2. Uhranzeigemechanismus (1; 2) nach Anspruch 1, dadurch gekennzeichnet, dass das oder jedes der Zahnräder (102; 2021, 2022) einem ersten (103a; 2031a, 2032a) und einem zweiten (104a; 2041a, 2042a) Antriebsanschlag entspricht, und dadurch, dass für das oder jedes Zahnrad (102; 2021, 2022) der erste der Antriebsanschläge (103a; 2031a, 2032a), der ihm entspricht, dieses letztere um einen vorbestimmten Winkel in Bezug auf die Wippe (101, 201) drehbar antreibt, wenn diese von ihrer ersten vorbestimmten Position in ihre zweite vorbestimmte Position übergeht, und der zweite der Antriebsanschläge (104a; 2041a, 2042a), der ihm entspricht, dieses letztere um einen gleichen vorbestimmten Winkel in Bezug auf die Wippe (101; 201) drehbar antreibt, wenn diese von ihrer zweiten vorbestimmten Position in ihre erste vorbestimmte Position übergeht.
  3. Uhranzeigemechanismus (1; 2) nach Anspruch 2, dadurch gekennzeichnet, dass dem oder jedem der Zahnräder (102; 2021, 2022) ein erster (103b; 2031b, 2032b) und ein zweiter (104b; 2041b, 2042b) Blockieranschlag entsprechen, und dadurch dass für das oder jedes Zahnrad (102; 2021, 2022) der erste der Blockieranschläge (103b, 2031b, 2032b), der ihm entspricht, die Drehung dieses letzteren in Bezug auf die Wippe (101; 201) über die vorbestimmte Winkeldrehung hinaus verhindert, die von dem ersten der Antriebsanschläge (103a; 2031a, 2032a) erzeugt wird, wenn die Wippe (101; 201) von ihrer ersten vorbestimmten Position in ihre zweite vorbestimmte Position übergeht, und der zweite der Blockieranschläge (104b; 2041a, 2042b), der ihm entspricht, die Drehung dieses letzteren in Bezug auf die Wippe (101; 201) über die vorbestimmte Winkeldrehung hinaus verhindert, die von dem zweiten der Antriebsanschläge (104a; 2041a, 2042a) erzeugt wird, wenn die Wippe (101; 201) von ihrer zweiten vorbestimmten Position in ihre erste vorbestimmte Position übergeht.
  4. Uhranzeigemechanismus (1) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, das er ein Zahnrad (102) und eine Anzeigescheibe (105) umfasst, wobei die Anzeigescheibe (105) Angaben (106) trägt, die in zwei konzentrischen Ringen der Scheibe (105) angeordnet sind, und dadurch, dass jede der zwei vorbestimmten Positionen der Wippe (101) das Lesen einer Angabe der Anzeigescheibe (105) durch das Fensterchen (107) ermöglicht, wobei die erste der vorbestimmten Positionen das Lesen einer Angabe auf dem äußeren Ring ermöglicht und die zweite der vorbestimmten Positionen das Lesen einer Angabe auf dem inneren Ring ermöglicht.
  5. Uhranzeigemechanismus (2) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass er zwei Zahnräder (2021, 2022) umfasst, von denen jedes eine Anzeigescheibe (2051, 2052) trägt, die Angaben (2061, 2062) trägt, die gleichmäßig über ihren Umfang verteilt sind, und dadurch, dass jede der zwei vorbestimmten Positionen der Wippe (201) das Lesen einer Angabe von der einen der Anzeigescheiben (2051, 2052) durch das Fensterchen (207) ermöglicht, wobei die erste der vorbestimmten Positionen das Lesen einer Angabe auf einer (2052) der Scheiben ermöglicht und die zweite der vorbestimmten Positionen das Lesen einer Angabe auf der anderen (2051) der Scheiben ermöglicht.
  6. Uhranzeigemechanismus (2) nach Anspruch 5, dadurch gekennzeichnet, dass die Zahnräder (2021, 2022) die gleiche Anzahl von Zähnen umfassen.
  7. Uhranzeigemechanismus (1; 2) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Zähne des Zahnrads (102) oder von jedem der Zahnräder (1021, 2022) asymmetrisch, vorzugsweise sägezahnförmig, sind.
  8. Uhranzeigemechanismus (1; 2) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass jeder der Zähne des oder der Zahnräder (102; 2021, 2022) eine erste Flanke, die sich im Wesentlichen radial in Bezug auf die Mitte des Zahnrads (102; 2021, 2022) erstreckt, und eine zweite Flanke umfasst, die einen spitzen Winkel mit der ersten Flanke bildet.
  9. Uhrmechanismus (1; 2) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die oder jede der Anzeigescheiben (105; 2051, 2052) auf dem Zahnrad (102; 2021, 2022), das sie trägt, reibend gelagert ist.
  10. Uhrwerk, das einen Uhranzeigemechanismus (1; 2) nach einem der Ansprüche 1 bis 9 und einen Antriebsmechanismus (109) umfasst, der das Antreiben der Wippe (101; 201) in abwechselnden Drehbewegungen ermöglicht, wobei der Antriebsmechanismus (109) kinematisch mit dem Finissage-Räderwerk des Uhrwerks verbunden ist.
  11. Uhrwerk nach Anspruch 10, dadurch gekennzeichnet, dass es eine Betätigungswelle umfasst, die dazu geeignet ist, die Wippe (101; 201) unabhängig von dem Finissage-Räderwerk beweglich anzutreiben.
  12. Uhr, wie beispielsweise eine Taschenuhr oder eine Armbanduhr, dadurch gekennzeichnet, dass sie ein Uhrwerk nach einem der Ansprüche 10 und 11 umfasst.
EP18196792.8A 2018-09-26 2018-09-26 Uhranzeigemechanismus Active EP3629101B1 (de)

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CH1224271A4 (de) * 1971-08-20 1974-04-30
US5327401A (en) * 1990-12-14 1994-07-05 Montres Rolex S.A. Wristwatch
CH687796B5 (fr) * 1994-05-30 1997-08-31 Vincent Calabrese Mecanisme d'horlogerie pour affichage alternatif des 24 heures.
CH692538A5 (fr) 1998-11-03 2002-07-15 Mct Holding Sa Mécanisme de quantième annuel.
CH707971B8 (fr) * 2013-04-29 2017-09-15 Télôs Watch SA Pièce d'horlogerie comprenant un dispositif d'affichage de quantième.

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