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
  • G04B19/25—Devices for setting the date indicators manually
• • 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
  • G04B27/00—Mechanical devices for setting the time indicating means
  • G04B27/001—Internal gear therefor, e.g. for setting the second hand or for setting several clockworks
• • 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
  • G04B27/00—Mechanical devices for setting the time indicating means
  • G04B27/004—Mechanical devices for setting the time indicating means having several simultaneous functions, e.g. stopping or starting the clockwork or the hands
• • 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
  • G04B27/00—Mechanical devices for setting the time indicating means
  • G04B27/005—Mechanical devices for setting the time indicating means stepwise or on determined values
• • 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
  • G04B27/00—Mechanical devices for setting the time indicating means
  • G04B27/02—Mechanical devices for setting the time indicating means by making use of the winding means
  • G04B27/026—Mechanical devices for setting the time indicating means by making use of the winding means for several clockworks or pairs of hands and/or supplementary functions
• • 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
  • G04B27/00—Mechanical devices for setting the time indicating means
  • G04B27/02—Mechanical devices for setting the time indicating means by making use of the winding means
  • G04B27/04—Mechanical devices for setting the time indicating means by making use of the winding means with clutch wheel

Definitions

• the present invention relates to a timepiece, including a timepiece comprising a correction mechanism indications provided by a first display member and a second display member.
• the expression "display member” means a needle, a ring, a disk, etc. which cooperates with a dial to provide an indication.
• This indication is not necessarily a temporal information. Non-limiting examples of this indication are: a calendar (annual, perpetual, day / date, etc.); moon phases, tides, regattas, AM / PM displays; a second time zone, for example a GMT time; etc.
• the displacement of a display member is generally provided by a display mobile comprising a toothing.
• This mobile can be directly connected to the display member, by driving it by a direct contact, or one or more mobile intermediaries between the mobile display and the display member ensure the training of the display unit by the display mobile.
• the display member is a needle, for example an hour hand
• its movement is ensured by a toothed wheel. hours cinematically linked to this needle.
• This hour wheel can be driven, directly or indirectly, by a mobile display.
• this ring or disc may comprise a toothing that ensures its displacement.
• the notion of display member may coincide with that of display mobile.
• These correction mechanisms generally comprise a winding stem mounted in a plate of a watch including the timepiece, this winding stem comprising a main axis.
• the winding stem is generally movable in translation in the direction of this main axis and can occupy different axial positions. It is also mobile in rotation about this axis: it can turn in a clockwise direction and also in a counterclockwise direction.
• the winding stem is movable between at least a first correction position and a winding position. In some cases, it can occupy a second correction position.
• this winding stem carries a sliding pinion (or sliding pinion), which is movable on the winding stem.
• the sliding pinion moves in a known manner on the winding stem by allowing a kinematic connection with a sliding mobile mounted freely in rotation.
• This mobile walkman is configured to cooperate directly or via a gear with the teeth of the mobiles that allow the training of the first display member or the second display member, so as to correct the information carried by these display members.
• a known example of this mobile walkman comprises a first reference, a second reference and a third reference, each reference belonging to a floor differs from the mobile walkman.
• the term “return” refers to a toothed wheel, that is to say comprising at least one tooth.
• Known references are wheels having a toothing along their entire edge, this toothing being continuous. In other words, the pitch between two teeth, that is to say the distance between two consecutive teeth, is the same for all the return.
• the teeth of the known references also have the same shape. They are generally symmetrical, that is to say they include an axis of symmetry belonging to a plane substantially perpendicular to the plane of the wheel (or in general of the mobile) to which the tooth belongs and passing through the tooth and by the center of rotation of this wheel (or mobile).
• a tooth devoid of any axis of symmetry belonging to a plane substantially perpendicular to the plane of the wheel (or in general of the mobile) to which the tooth belongs and passing through the tooth and the center of rotation of this wheel (or mobile) in this context is an asymmetric tooth.
• a tooth having a substantially triangular section is defined by a first sidewall and a second sidewall, which constitute two of the three sides of the triangle, the third side being formed by the base of the tooth. This also applies to any tooth with a point (rounded or not), even if the sidewalls have a certain curvature.
• the first flank and the second flank are the sides of the rectangle respectively of the square which define, with the head and the base of the tooth, the rectangle respectively the square. This applies even if the first flank and the second flank have some curvature.
• the height of a tooth indicates the distance between the top of a sidewall (that is to say, its farthest point of the bottom of the toothing) and the bottom (flat or round) of the teeth in correspondence of this flank.
• a tooth is symmetrical if for example, the height, the shape of the first side of the tooth and the inclination of the flank with respect to the bottom (flat or round) of the toothing in correspondence of this flank is
• a substantially sharp tooth which has a symmetry with respect to an axis belonging to a plane perpendicular to the main plane of a toothed wheel to which the tooth belongs, this plane passing through the axis of rotation of the toothed wheel and by the distal end (tip) of the tooth is an example of a symmetrical tooth.
• the first reference solutions of the state of the art is driven in a known manner by the sliding pinion so that, in the direction of rotation imposed on the first return via the winding stem, the mobile player is moved in a position where the second referral leads (directly or indirectly, ie via one or more intermediates) the first display member rotating in a first direction of rotation.
• the third return causes (directly or indirectly) a second display member.
• the mobile walkman known therefore comprises three different stages to make two corrections, which does not optimize the thickness of the timepiece.
• Another known example of the mobile walkman comprises a first reference and a second reference, each reference belonging to a floor differs from the mobile walkman.
• this mobile walkman makes it possible to make a single correction.
• the document CH684920 proposes to use a mobile walkman comprising a first return driven in known manner by the sliding pinion (reference 19 in Figure 1 of this document), and a second reference (reference 21 in Figure 1 of this document). document) which, in the sense of rotation that is imposed on the sliding pinion via the winding stem, will move either in a first position where it meshes through a gear with the toothing of a first display member (a star of days) or in a second position where it meshes directly with the toothing of a second display member (a date ring).
• An object of the present invention is to provide a timepiece free of limitations of known timepieces. Another object of the invention is to propose a part
• timepiece having a reduced thickness while allowing effective correction of the indications carried by two display members whose drive is provided by mobiles having different teeth, that is to say having different teeth, for example having a shape, a height and / or a slope of the different sides.
• This solution has the advantage over the prior art to reduce the thickness of the timepiece because it includes two references, while allowing the correction of the indication carried by two display members whose drive is provided by mobiles having different teeth: this is possible thanks to the fact that the second reference comprises at least one asymmetrical tooth.
• asymmetrical tooth indicates that the height, the shape of the first flank of this tooth and / or its inclination relative to the bottom (flat or round) of the toothing in correspondence of this first flank is significantly different from the height, shape
• first asymmetrical tooth allows effective correction of the indications carried by two display members whose drive is provided by mobile having different teeth, because a side of this tooth is adapted to lead the first. mobile and another side is adapted to drive the second mobile. It is thus possible to adapt each side of the first tooth to the type of mobile it is supposed to lead.
• the second reference according to the invention comprises a single tooth.
• the first display mobile generally comprises a continuous toothing, comprising teeth all identical to each other.
• the dentes are generally spaced by a constant pitch along all the teeth. The same considerations apply to the second display mobile.
• each tooth of the first display mobile comprises a third sidewall and a fourth sidewall: in this variant, the first sidewall of the second return tooth is arranged to cooperate with this third sidewall, so as to cause the first mobile display.
• each tooth of the second display mobile comprises a fifth flank and a sixth flank: in this variant, the second flank of the tooth of the second return is arranged to cooperate with this fifth flank, so as to cause the second mobile display.
• a display mobile is a date ring which generally comprises teeth having a height substantially greater than that of other moving teeth of a movement.
• the height of one of the flanks of the tooth of the second return, in particular the flank which is intended to cooperate with this ring, is thus adapted to carry out the drive of this ring.
• the first flank of the first tooth of the second return is substantially perpendicular to the bottom of the second return, that is to say to the part of the second return adjacent to the second return tooth in
• the display mobile is a date ring which generally comprises teeth having a flank
• this characteristic of the tooth of the second return allows the drive of this ring.
• the tooth of the second reference is a first tooth which is followed by a second tooth.
• the second reference comprises only two teeth, namely the first tooth and the second tooth.
• the pitch between the first tooth and the second tooth is a preferred variant.
• the shape of the second tooth is adapted substantially to the shape of the teeth the first display mobile, so as to drive the first display mobile.
• the force of the contact can be decomposed into two components, one tangential, that is to say substantially normal to the radius of the first display mobile, and the other radial, that is to say along the the direction of the radius of the first display mobile.
• the radial component is zero or negligible compared to that tangential, which allows excellent transmission of torque from the second reference to the first display mobile. It is also possible that the radial component of this contact becomes too large compared to that tangential, which could block and damage one or more components of the timepiece, for example and without limitation the first display mobile or the winding stem.
• the presence of the second tooth solves this problem because it allows to give a substantially tangential force to the first display mobile before the first tooth comes into contact with the first display mobile.
• the second tooth makes it possible to further improve the transmission of the torque from the second reference to the first display mobile and / or to prevent the blockage or breakage of one or more components of the timepiece .
• this second tooth is symmetrical.
• the height of this second tooth (corresponding to the height of each of the two symmetrical flanks) is smaller than the height of the highest flank of the first tooth.
• the second tooth does not cause the toothing of the second display mobile (the date ring, for example).
• each second tooth is followed by a third tooth.
• the second reference comprises only three teeth, namely the first tooth, the second tooth and the third tooth.
• the pitch between the second and the third teeth corresponds substantially to the pitch between the first tooth and the second tooth, which in turn substantially corresponds to the pitch of the toothing of a mobile
• the display for example the first display mobile.
• the presence of the third tooth allows the contact force with the first display mobile is substantially tangential to the first display mobile in case it was not possible or that was partially possible with the first tooth and / or the second tooth.
• the third tooth makes it possible to further improve the transmission of the torque on the part of the second reference to the first display mobile.
• this third tooth is symmetrical.
• the height of this third tooth (corresponding to the height of each of the two symmetrical flanks) is smaller than the height of the second tooth.
• the third tooth also does not cause the toothing of the second display mobile (the date ring, for example).
• the second reference therefore comprises a single group of three teeth, including a single group comprising a first tooth, a second tooth and a third tooth. Heights these teeth are decreasing from the first tooth (one side of which has the highest height). The second tooth is between the first and the third.
• the second reference comprises a single group of three teeth, it also comprises a toothless zone.
• the gear of the second gear is "discontinuous" because it is not present along the entire edge of the second gear.
• the pitch of the second reference is not always constant.
• the second reference comprises a first step (one that separates the first tooth from the second and optionally the second from the third, and which substantially corresponds to the pitch of the toothing of the first mobile) and a second step (the between the flank of the first tooth which is not consecutive to a flank of the second tooth, and the flank of the third tooth which is not consecutive to the flank of the second tooth) greater than the first step, for example at the less five times bigger than the first step.
• this group of teeth could comprise another integer number N of teeth having decreasing heights, and separated by a pitch which corresponds substantially to the pitch of the toothing of the first mobile.
• this group of teeth should not cover all the perimeter of the second return, to leave space to allow cooperation of the first tooth with the teeth of the second mobile display (the date ring for example), which has a toothing different from that of the first mobile display.
• the timepiece according to the invention comprises at least two groups of teeth, preferably at least two groups comprising one, two, three or as a rule N teeth each.
• these groups of teeth are equidistant from one another.
• Two groups of consecutive teeth are separated from each other by a zone devoid of teeth.
• the toothless area of the second return is substantially rectilinear or concave or convex.
• the first display member being a jumping display member, for example a jumping needle which indicates for example the time of a second time zone.
• the correction mechanism according to the invention which does not allow a
• the second reference of the mechanism according to the invention is preferably manufactured by the so-called “Liga” method ("Lithography,
• Galvanoformung Abformung "). It can alternatively be manufactured by stamping, over or by any other manufacturing process.
• the present invention also relates to a watch for example a mechanical watch, including a mechanical chronograph watch, including the timepiece according to the invention.
• this watch is at least partly a skeleton watch to allow the user to see at least a part of the timepiece according to the invention.
• FIG. 1 illustrates a view from above of a watch comprising an embodiment of the timepiece according to the invention, when the second referral cooperates with the second display mobile.
• FIG. 2 illustrates a view from above of a watch comprising an embodiment of the timepiece according to the invention, when the second referral cooperates with the first display mobile.
• FIG. 4 illustrates a view from above of a detail of FIG. 1.
• Figure 1 illustrates a top view of a watch 1000 comprising an embodiment of the timepiece according to the invention.
• the timepiece comprises:
• a first display mobile (the wheel 1) driving via an intermediate wheel 90 a first display member (in this case a wheel 70 hours of a second time zone) to provide a first indication (the second time zone); time in this case),
• a second display mobile which in this case corresponds to the second display member (the date ring 2) making it possible to provide a second indication 200 (the date for example), for example through a non-illustrated wicket .
• the first display unit 1 of Figure 1 comprises a continuous toothing, including teeth 110 all identical to each other.
• the teeth are generally spaced by a constant pitch P1 along all the teeth.
• the second display unit 2 of Figure 1 comprises a continuous toothing, including teeth 210 all identical to each other.
• the teeth are generally spaced by a constant pitch P2 along all the teeth.
• FIG. 4 shows a tooth 110 symmetrical with respect to the axis A1, which belongs to a plane substantially
• the height, the shape of the first flank 111 of each tooth 110 and its inclination relative to the bottom 102 of the toothing is substantially identical to the height, shape
• the correction mechanism illustrated in FIG. 1 makes it possible to correct both the first indication (the time of a second time zone for example) and the second indication (the date of the calendar, for example), and comprises:
• the winding stem 60 has at its end a ring 62.
• this rod allows not only to manually raise a barrel spring (not shown) but also to correct the information carried by the display members.
• the drive mechanism of the sliding pinion 80 is well known to those skilled in the art and will not be described in detail here.
• the mobile device includes:
• a first reference 40 belonging to a first stage of the traveling mobile 3 (a lower stage in this case, that is to say the platinum side of the movement)
• a second reference 30 which in the illustrated example is coaxial with the first reference 40 (they share the same axis 50) and belongs to a second stage of the mobile device 3 differs from the first stage (an upper stage in this case, that is, the dial side of the movement).
• the mobile player 3 comprises two floors only, which reduces the thickness of the room
• the first reference 40 is driven by the sliding pinion 80 so that, in the direction of rotation imposed on the first return via the winding stem 60, the mobile device 3 is moved to a first position where the second reference 30 leads by
• the second reference 30 comprises at least a first tooth 310, better visible in Figure 4, the first tooth being asymmetrical because devoid of any axis of symmetry as defined above.
• first asymmetric tooth 310 allows effective correction of the indications carried by the two display members whose drive is provided by mobiles 1, 2 comprising different teeth.
• flank 311 is adapted to drive the first mobile 1 and the other flank 312 is adapted to drive the second mobile 2. It is thus possible to adapt each flank of the first tooth to the type of mobile that the flank is supposed to lead.
• first flank 311 of the first tooth 310 of the second return 30 is arranged to cooperate with the flank 111 of the first mobile 1.
• the second flank 312 of the first tooth 310 of the second return 30 is arranged to cooperate with the flank 212 of the second mobile 2.
• the second flank 312 of the first tooth 310 of the second reference 30 has a height H2, visible in Figure 4, different from the height H1 of the first sidewall 311.
• the second display unit 2 is a date ring which generally comprises teeth 210 having a height substantially greater than that of the teeth of other mobile movement. The height of the flank 312 of the first tooth 310, this flank 312 being intended to cooperate with this ring 2, is thus adapted to carry out the driving of this ring 2.
• the first flank 311 of the first tooth 310 of the second return 30 is substantially perpendicular to the bottom 302 of the second return, that is to say to the part of the second return adjacent to the first tooth 310 and devoid of teeth.
• the display mobile 2 is a date ring which generally comprises teeth having a flank 212 perpendicular to the bottom 202 of the toothing of the ring, this characteristic of the first tooth 310 allows the drive of this ring 2.
• the first tooth 310 is followed by a second tooth 320.
• the second reference comprises only two teeth, namely the first tooth and the second tooth.
• the pitch P3 between the first tooth 310 and the second tooth 320 substantially corresponds to the pitch P1 of the toothing of the first display mobile 1.
• the shape of the second tooth 320 corresponds
• the position of the first tooth 310 during its contact with the first display mobile 1 is random.
• the force of the contact can be decomposed into two components, one tangential, that is to say substantially normal to the radius r (illustrated in FIG. 2) of the first display mobile 1, and the other radial, c that is to say along the direction of the radius r of the first display unit 1.
• the radial component is zero or negligible relative to the tangential component, which allows excellent transmission of the torque from the second reference 30 to the first display unit 1. It is also possible that the radial component of this contact becomes too large compared to the component
• the presence of the second tooth 320 solves this problem because it allows the contact force with the first display mobile 1 is substantially tangential to the first display mobile 1 before the tooth 310 comes into contact with the toothing of the first display mobile.
• the second tooth 320 makes it possible to further improve the transmission of the torque from the second reference 30 to the first display unit 1.
• the presence of the second tooth also makes it possible to directly drive the first display mobile in the case where the position of the first tooth 310 during the contact between the second reference 30 and the first mobile. 1 would not allow it or would not allow it to be effective.
• FIG. 4 shows a tooth 320 symmetrical with respect to the axis A2, which belongs to a plane substantially perpendicular to the plane of the second mobile 30 and which passes through the tip of the tooth 320 and through the center of rotation C3 of the second mobile 30 .
• the height of the second tooth 320 (corresponding to the height of each of the two symmetrical flanks) is smaller than the height H2 of the highest flank of the first tooth. Indeed, in a preferred embodiment, the second tooth never comes into contact with the toothing of the second display mobile (the date ring 2). In a preferred variant, the height of this second tooth (corresponding to the height of each of the two symmetrical flanks) corresponds substantially to the height H1 of the smallest flank of the first tooth 310.
• each second tooth 320 is followed by a third tooth 330.
• the second reference 30 comprises only three teeth, namely the first tooth 310, the second tooth 320 and the third tooth 330.
• the pitch P4 between the second tooth 320 and the third tooth 330 substantially corresponds to the pitch P3 between the first tooth 310 and the second tooth 320, which at its turn substantially corresponds to the pitch P1 of the toothing of the first display mobile.
• the third tooth 330 makes it possible to further improve the torque transmission from the second return 30 to the first display unit 1.
• this third tooth 330 is symmetrical.
• FIG. 4 shows a tooth 330 symmetrical with respect to the axis A3, which belongs to a plane substantially perpendicular to the plane of the second mobile 30 and which passes through the central point of the flat head of the tooth 330 and through the center of rotation C3 of the second mobile 30.
• this third tooth (corresponding to the height of each of the two symmetrical flanks) is smaller than the height of the second tooth.
• the third tooth also does not cause the toothing of the second display mobile (the date ring, for example).
• the head of the third tooth 330 is substantially flat. However, this characteristic is not essential and the head of the third tooth 330 could alternatively be rounded or pointed, provided that the height of this third tooth 330 is less than that of the second tooth 320.
• the second reference 30 therefore comprises a single group of three teeth, including a single group comprising a first tooth 310, a second tooth 320 and a third tooth 330.
• the heights of these teeth are decreasing from the first tooth (which has one of the flanks with the highest height large) if one traverses the second mobile in the direction F1 indicated in Figures 2 and 3.
• the second tooth 320 is between the first 310 and the third 330.
• the second reference 30 comprises a single group of three teeth, it also comprises a toothless zone.
• the gear of the second gear is "discontinuous" because it is not present along the entire edge of the second gear.
• the pitch of the second reference is not always constant.
• the second reference 30 includes a first step
• this group of teeth could comprise an integer number N of teeth having decreasing heights, and separated by a pitch that corresponds substantially to the pitch of the toothing of the first mobile.
• this group of teeth must not cover the entire perimeter of the second return 30, to leave space to allow a cooperation of the first tooth 310 with the teeth 201 of the second display unit 2 (the date ring for example), which has a toothing different from that of the first mobile display.
• the second reference 30 of the timepiece according to the invention comprises at least two groups of teeth, preferably at least two groups of N tooth (s) each.
• the second reference 30 comprises three groups of teeth. In this variant, these three groups teeth are equidistant from each other (12071207120 °).
• each group of three teeth comprises teeth which are all different from each other.
• This characteristic can be generalized to any number of groups of teeth, each group of teeth comprising all different teeth, for example because they have at least one different height.
• the toothless zone 302 of the second reference 30 is substantially straight.
• it could be concave or convex. It could also be rectilinear between the first and second groups of teeth, and concave or convex between the second and third groups of teeth.
• the first display member 1 is a jumping display member, for example a jumping needle which indicates the time of a second time zone.
• the correction mechanism according to the invention which does not allow instant correction of an indication since the position of the first tooth 310 of the second reference is random when it is in contact with the first display unit 1, is adapted to a jumping display member, since its correction is done in discrete increments since when the second reference meets the first display mobile, both have a random angular position.
• the second 30 of the mechanism according to the invention is preferably manufactured by Liga (Lithography, Galvanoformung, Abformung). It can alternatively be manufactured by other manufacturing processes. Reference symbols used in the figures

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• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Electromechanical Clocks (AREA)
• Gears, Cams (AREA)

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• 2018
  • 2018-03-16 CH CH00338/18A patent/CH714795A9/fr not_active Application Discontinuation
• 2019
  • 2019-02-20 EP EP19709799.1A patent/EP3765922B1/de active Active
  • 2019-02-20 WO PCT/IB2019/051356 patent/WO2019175687A1/fr not_active Ceased

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