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
  • G04B19/02—Back-gearing arrangements between gear train and 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
  • G04B19/00—Indicating the time by visual means
  • G04B19/06—Dials
  • G04B19/08—Geometrical arrangement of the graduations
  • G04B19/082—Geometrical arrangement of the graduations varying from the normal closed scale
• • 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
  • G04B19/20—Indicating by numbered bands, drums, discs, or sheets
  • G04B19/202—Indicating by numbered bands, drums, discs, or sheets by means of turning discs
• • 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

Definitions

• the present invention relates to a correction mechanism for a watch movement with retrograde and jumping display.
• Retrograde displays are known in watchmaking, that is to say displays in which a needle or a disc rotates in one direction for a given period of time and then returns almost instantaneously to the initial position by turning rapidly into position. opposite direction at the end of this period.
• these retrograde displays are used to indicate the minutes on a scale from 1 to 60 covering an arc of less than 360 °.
• These retrograde displays free up space on the dial for other indications.
• Jumping displays are also known, in which a time indicator jumps almost instantaneously from one value to another. These jumping displays are used in particular for displaying the date in a window. They are also sometimes used for other indications, including indications of the current time in a window.
• the expression "jumping display” covers both the displays in which the jump is almost instantaneous and so-called trailing displays in which this jump is slower, the advance of the display being nonetheless discontinuous.
• This correction device has the major disadvantage of increasing the size of the movement and being complex.
• EP0788036B 1 relates to a watch with a retrograde display of minutes and a display jumping hours on a disk. A rocker is lifted gradually once an hour by the rotation of a spiral cam secured to the minute wheel.
• An object of the present invention is to provide a simple correction mechanism for a watch movement combining both a retrograde display and a jumping display.
• An object of the present invention is to provide a time correction mechanism for display movement display
• Another goal is to propose a correction mechanism that allows a faster and less compelling correction of the current time.
• the watch movement comprises: - a retrograde mobile
• the corrections of the retrograde indicator in the clockwise direction are transmitted to the ring of jumping hours.
• a retrograde minutes indicator this makes it possible, for example, to correct the hour indicator jumping clockwise, by jumping one hour each time the minute indicator goes from 59 to 00.
• correction of the jumping hour ring can be achieved very simply by employing the jumping time driving mechanism used during the normal running of the watch.
• Corrections of the retrograde indicator minutes in the counterclockwise direction are however preferably not transmitted to the ring jumping hours.
• the jumping hour training mechanisms often include a cam with a jump, for example a snail cam, which can only be crossed in one direction.
• a correction blocking mechanism is provided to prevent the correction of the retrograde mobile in the counterclockwise direction in a range around the jump of this mobile, and to allow it in all other positions of this device. mobile off the beach.
• the mechanism may prevent counterclockwise correction when the retrograde minute indicator indicates a value in a range including the 60 minute. This avoids the risk of moving the jumping hours indicator by a correction in the counterclockwise direction of the minute hand in that range.
• This correction locking mechanism can be linked to the cam follower, which can be on the rake, and block the rotation of a snail cam in one of the two directions of rotation, when this snail cam is near the probe jump position.
• the asymmetrical internal toothing may comprise a plurality of teeth with asymmetrical flanks, the drive member being arranged so as to abut against a sidewall of a tooth of the internal toothing. and to be able to drive the ring of hours when the retrograde mobile rotates in one direction and can slide on another side of a tooth of the internal toothing when the retrograde mobile rotates in the opposite direction.
• the retrograde mobile can display the minutes.
• the movement may comprise a snail cam and a probe engaged with the snail cam to act on the rake to drive the retrograde mobile.
• the feeler and the rake can be integrated in a single component, or consist of two separate parts.
• the movement according to the invention may comprise a spring mounted on the rake and may exert a restoring force on the drive member to press the internal toothing of the hour ring.
• the snail cam rotating in a first direction of rotation can cause the rake and the mobile retrograde in the opposite direction of rotation in the first direction.
• the movement according to the invention is arranged so as to allow an unlimited correction of the display of hours and minutes in the clockwise direction.
• the movement according to the invention can be arranged to allow the correction of hours in the clockwise direction, jumping manner.
• the movement according to the invention can be arranged to allow a correction of the display of the minutes in the direction
• the movement according to the invention can be arranged to allow correction of the display of the minutes in the direction
• the movement according to the invention may comprise a correction blocking mechanism to prevent the correction of the minutes in the counterclockwise direction in a range including the return moment of the retrograde mobile, and to allow the correction of the minutes in the direction counterclockwise out of said range. This avoids the risk of accidental displacement of the jumping hours indicator by a correction of the retrograde mobile near the moment of return of the mobile.
• the method for correcting the display of a time data of a watch movement may comprise the following steps: in a first interval, for example in an interval of 0 to 59 minutes : the rotation of a time-setting rod in a first direction causes the rotation in a first direction of a snail cam and the rotation in a second direction of a rake,
• the driving member moves along a first flank of an internal toothing of a ring without causing rotation of the ring, then, at the minute 60:
• This solution has the advantage of a correction of the minute on the range 0 to 59 min which does not interfere with the hours disk, and can therefore be performed bidirectionally.
• the rotation of the drive member bearing against a second side of the internal toothing of the ring causes this ring almost instantaneously.
• the correction method according to the invention may have the steps in which:
• This solution has the advantage of allowing the setting of the retrograde minute and jumping time by the same correction position of the time setting rod.
• This solution has the advantage of being able to set the minutes in both directions, clockwise and counterclockwise.
• the correction of the display of the minutes in the counterclockwise direction can be limited to the interval 0-59 minutes.
• FIG. 1 illustrates a view from above of the main components of the mechanism for correcting a movement of the watch according to a first embodiment of the invention.
• - Figure 2 illustrates a top view of the winding rod and set time with the sliding pinion and the rocker according to the invention, in the winding position.
• - Figure 3 illustrates a top view of the winding rod and set time with the sliding pinion and the rocker according to the invention, in the correction position.
• FIG. 4 illustrates a view from above of the movement according to
• FIG. 5 illustrates a view from above of the device according to the invention at minute 17.
• FIG. 6 illustrates a view from above of the device according to the invention at the minute 35 (finger contact with the toothing 6101).
• FIG. 7A illustrates a view from above of the device according to the invention at the minute 59 (hooking of the finger 4 with the set of teeth 6100).
• Fig. 7B illustrates a detail of Fig. 7A, showing in particular the end of the rake stop which bears against the rim of the jump of the snail cam.
• FIG. 8 illustrates a view from above of the device according to the invention at minute 60.
• Figures 9 to 13 illustrate several views from above of the device according to the invention during the jump from the minute 60 to the minute 0.
• FIG. 13 illustrates a view from above of the device according to the invention at minute 0.
• FIG. 14 illustrates a view from above of the main components of the mechanism for correcting a movement of the watch according to the second embodiment of the invention.
• FIG. 15A illustrates a view from above of a simplified part of the mechanism for correcting a movement of the watch according to the first embodiment of the invention.
• FIG. 15B illustrates a view from above of a simplified part of the mechanism for correcting a movement of the watch according to a second embodiment of the invention.
• - Figures 16 to 20 illustrate several views from above of the device according to the second embodiment of the invention.
• Figure 1 illustrates the main components of the correction mechanism 1 (also called time setting mechanism) of a watch movement according to the invention.
• This movement comprises a retrograde minute indicator 2, for example a minute hand or a minute ring, mounted on the axis of the retrograde moving minute 20.
• the hours are displayed jumpingly in a window 8 (FIG. A jumping hour ring 60.
• the jumping hour ring 60 is stationary for most of each hour, and then goes virtually instantaneously or slippery to the next hour.
• the first end 31 of a rake 3 rotates a snail cam 5 carried by a trigger drive wheel 52.
• This trigger driving wheel 52 is driven by the wheel 7 of the gear so that the indicator minutes 2 travels on the minute scale 9 (Figs 4 to 13) in 60 minutes (or 60 minutes minus the return time).
• the correction mechanism is illustrated in Figures 2 and 3 in two different positions, "P0" and “P1", of the winding rod and correction 10.
• the time setting rod 10 allows the displacement of a sliding pinion 15 between the two positions "P0" and "P1".
• the first correction return 16 in turn meshes with the second correction reference 18.
• the second correction reference 18 (FIGS. 2 and 3) is hidden by the puller 12 and meshes the driving wheel of the clock train 17 which in turn engages the trigger drive wheel 52, coaxially connected to a snail cam 5.
• the wheel 17 is provided with a friction to prevent the rotation of the snail cam 5 in a clockwise direction when the rake is in support against the fall of the snail cam at the minute 0. It is therefore not possible to force the minute indicator to return instantly from minute 1 to minute 59.
• the rake 3 has a first end 31 which forms a probe to follow the periphery of the snail cam 5.
• the rake and the feeler could also consist of several distinct elements.
• a rake spring 33 presses the rake against the snail cam 5.
• the second end 32 of the rake 3 has an oblong opening provided with an internal toothing 320.
• the rake 3 pivots about a pivot point 34 under the action of the snail cam.
• the internal toothing 320 of the second end of the rake 32 meshes with the external toothing 200 of the retrograde mobile 20 so that the retrograde indicator 2 carried by the retrograde mobile 20 rotates in the same direction as the second end of rake 32.
• a rake stop 35 is linked to the rake 3 and prevents rotation of the cam. snail 5 clockwise, at least in a blocking range when the probe 31 is near the jump of the cam.
• the movement of the rake is transmitted to an organ
• a return spring 42 exerts a restoring force on the tooth 4 to press it on the toothing 610.
• Time indications 6 are carried by the hour ring 60. This ring is mounted on the drive ring 61 of smaller diameter. In a variant not shown, it is also possible to place the time indications 6 directly on the drive ring 61 or on a ring of the same diameter.
• the drive ring 61 has an internal toothing 610 with a plurality of teeth over the entire inner periphery. The spacing between the teeth is regular.
• the teeth have two asymmetrical flanks 6100 and 6101.
• the first flank 6100 is almost radial to the diameter of the ring 61 and makes it possible to drive the ring 61 by means of the drive member (tooth) 4.
• the second flank 6101 is inclined and forms an angle of less than 30 ° with the tangent of the ring 61, so that when the tooth 4 is in contact with the second sidewall 6101, it can slide on the second sidewall 6101 without the 'train, not driving ring 61 either.
• the drive ring 61 further comprises an external toothing 61 1 having teeth 61 10 whose apex is concentric with the drive ring 61, the hollow 61 1 1 between each tooth 61 10 being provided for receiving the end 620 of a positioning jumper 62.
• the jumper 62 thus cooperates with the external toothing 61 1 to ensure the centering of the time indications 6 in a window (not shown).
• the end 620 of this jumper 62 opposes the displacement of the ring 61 by engaging in the hollow 61 1 1 between the teeth 61 10 of the external toothing of the drive ring 61.
• the stiffness of the jumper 62 is chosen so that it keeps in place the drive ring of the 61 hours when it is not driven by the tooth 4 and allow the end of the jumper 620 to emerge from the hollow 61 1 1 of the external toothing of the ring of the hours 61 1 under the action of the tooth 4 on the set of teeth 6100 and thanks to a rake spring 33.
• FIG. 4 illustrates the watch movement at the minute 0.
• the first end of the rake 31 bears against the smallest diameter of the snail cam 5.
• the retrograde mobile 20 is engaged in the teeth at the end of the internal toothing 320 in the opening of the rake 32.
• the tooth 4 is not in contact with the internal toothing 610 of the hour ring 60.
• the end 35 of the rake stop 3 is not in contact with the snail cam 5, or could slide against the periphery of this snail cam.
• FIG. 5 corresponds to a position of the minute hand 2 at the minute 17.
• the snail cam 5 driven counterclockwise by the action of the time-setting rod on the wheel 17 (FIG. Figure 1), causes the moving clockwise the second end of the rake 32, to move the minute hand 2 clockwise along the minute scale 9.
• the drive member 4 (tooth) skims the top of the rim 32 a tooth of the internal toothing 610 of the ring 61, without having a grip on it.
• the ring therefore remains stationary, its position being fixed by the jumper 62 which cooperates with the recesses 61 1 1 on the outer periphery of the ring 61 (FIG 1).
• FIG. 6 corresponds to a position of the minute hand 2 at the minute 35, the finger 4 being in contact with the set of teeth 6101.
• the retrograde mobile 20 continues to turn clockwise and the minute hand 2 to move clockwise along the minute scale 9.
• the drive member 4 comes into contact with an oblique flank 6101 of the internal toothing 610 of the ring 61, without having taken on it. Ring 61 remains motionless.
• the tooth 4 slides along the teeth of the drive ring hours, without interfering with his position.
• the correction of the minutes can be done in both directions by turning the time setting rod in one direction or the other. In this range, the correction of the minutes does not cause any displacement of the ring of jumping hours.
• Figure 7 A corresponds to a position of the minute hand 2 in a rotational locking range near the minute 59, for example at the minute 57.
• the finger 4 is not yet crocheted with the toothing 6100.
• the first end of the rake 31 is in contact with the snail cam 5 near the portion 51 of maximum diameter of the latter.
• the drive member 4 comes into contact with a vertex of the internal toothing 610. Once the finger 4 with the teeth 6100, it can drive the ring 61 counterclockwise, in order to cause a jump of jumping time if the snail cam 5 continues to rotate counterclockwise.
• the end 350 of the rake stop 35 bears against the rim of the drop on the periphery of the snail cam 5, and thus blocking its rotation in the clockwise direction.
• the rake stop 35 thus acts as a rotation locking mechanism of the cam, to prevent the cam 5 from rotating clockwise and to drive the rake in the direction
• the rake stop 35 acts only in a limited range when the feeler 31 is just before the fall of the cam; the rotation of the cam 5 remains possible in both directions outside this range.
• the rotation of the snail cam 5 is locked in the clockwise direction when the minute indicator is between 57 and 59 minutes.
• Figure 8 corresponds to a position of the minute hand 2 to the minute 60.
• the first end of the rake 31 is located at the top of the snail cam 5.
• the drive member 4 teeth
• the drive member 4 has exceeded the top of the internal toothing 610 and is engaged with a first flank 6100 of the internal toothing 610 of the ring 61.
• the ring is always held in place by the jumper 62 ( Figure 1).
• the fall of the rake 3 against the snail cam 5 simultaneously causes the return to almost instantaneous 0 of the minute indicator 2 counterclockwise and a jump of the hour ring 61 also in counterclockwise direction , so that the next time is displayed. This return is illustrated in FIGS. 8 to 13.
• Figures 8 and 9 illustrate the beginning of the return to the minute 0 of the retrograde indicator 2 and the start of the jump of the jumping display.
• the first end of the rake 31 initiates its fall from the top of the snail cam 5.
• the second end of the rake 32 rotates counterclockwise rotating in the same direction the retrograde indicator 2 positioned at the minute 55 and the tooth 4
• the hour ring 60 is then driven counterclockwise by the tooth 4, thanks to the rake spring 33 ( Figure 1) which disarms progressively.
• the rake spring 33 (FIG. 1) transmits to the ring 60 sufficient energy to push the end 620 (FIG. 1) out of the positioning jumper 62 (FIG. 1) from the ring 61 of the recess 61.
• Figure 1 1 Figure 1 of the external toothing 61 1 ( Figure 1).
• Figures 10 and 1 1 illustrate the continuation of the return of the retrograde indicator 2.
• the retrograde indicator 2 is positioned respectively at minutes 40 and 25.
• the tooth 4 moves along the first side of the internal toothing 610 Through the window 8, we can observe the
• FIG. 12 illustrates the end of the return of the retrograde indicator 2.
• the retrograde indicator 2 is positioned at the minute 17 and the tooth 4 is almost at the top of the internal toothing of the 610 hour ring. is soon no longer engaged with the internal toothing 610. Through the aperture 8, we can observe the new jumping display element 6.
• the jumper 62 ( Figure 1) is "dropped” in a hollow 61 1 1 ( Figure 1) of the external toothing 61 1 ( Figure 1).
• FIG. 13 illustrates the return of the retrograde indicator 2 to the minute 0.
• the retrograde indicator 2 is positioned at the minute 0 and the tooth 4 is no longer in contact with the internal toothing of the ring. hours 610.
• the first end of the rake is at the level of the smallest diameter of the snail cam 5. Through the aperture 8, the new position of the jumping display element 6 can be observed.
• the correction mechanism 1 thus makes it possible to skipfully correct the display of the hours in the clockwise direction. This correction is performed by means of the correction mechanism 1 minutes, turning the time setting rod 10 in the correction position "P1". An unlimited amplitude correction can thus be performed in the clockwise direction.
• this correction device thus makes it possible to perform a correction of the minutes only outside the blocking range, for example between the minute 57 (or 59) and the minute. 0.
• FIG. 14 illustrates a view from above of the main components of the mechanism for correcting a movement of the watch according to a second embodiment of the invention. Compared with Figure 1, this variant presents two main differences:
• the return spring 44 and the jumper 64 illustrated in FIG. 14 make it possible to perform two separate functions, which cooperate between they.
• the return spring 44 makes it possible to control the position of the ring 61 during its counterclockwise rotation, thanks to its cooperation with the internal toothing of the ring 61; the jumper 64, meanwhile, prevents the ring 61, following the rebound of the ring 61 against the return spring 44 via a tooth of the internal toothing of the ring 61, can turn into clockwise, which would cause a display error.
• a first C-shaped end 440 substantially identical to that of the first end 420 of the return spring 42 of FIG. 1,
• a body 441 which is substantially identical to the body 421 of the return spring 42 of FIG. 1, and
• This second end 442 forms a tooth which cooperates with the internal toothing of the ring 61.
• the jumper 62 has a first end (or outlet end) 620 and a second end (or inlet end) 622.
• the two ends have a non-zero inclination with respect to the stops 61 1 10 and 61 1 1 1 defining the walls vertical of the hollow 61 1 1 of the external toothing 61 1 of the drive ring 61.
• the jumper 62 cooperates with a jumper spring 63.
• Figure 15B illustrates in detail the new shape of jumper 64. It has a first end (or outlet end) 640 and a second end (or input end) 642. Only the first end 640 has an inclination non-zero with respect to the stops 61 1 1 1 and 61 1 10 defining the recesses 61 1 1 of the external toothing of the drive ring 61.
• the second end 642 is indeed substantially parallel to the stops 61 1 1 1 and 61 When the jumper 64 is engaged in the recess 61 1 1.
• This particular shape of the jumper 64 makes it possible to block a clockwise rotation of the drive ring 61.
• the second end 642 of the jumper 64 is configured so as to block a clockwise rotation of the drive ring. 61.
• FIG. 16 illustrates the ring 61 which is rotating counterclockwise, as indicated by the arrow C, driven by the rake 3.
• the end 442 of the spring 44 is not in contact with the internal toothing of the 61.
• the jumper 64 slides on the portion between two consecutive recesses 61 1 1 of the external toothing of the ring 61. 442 of the spring 44 is not yet in contact with the internal toothing of the ring 61
• FIG. 19 illustrates the ring 61 which bounces against the spring 44: in particular a tooth of the internal toothing of the ring 61 comes into contact with the end 442 of the spring 44, in correspondence of the point (or zone) contact D.
• the ring 61 following this rebound, is rotated in the opposite direction, that is to say in the clockwise direction. Bouncing is noticeable when, for example, the spring 33 (illustrated in FIG. 1 for example) is armed at most via its
• jumper 62 of Figure 1 was used instead of the jumper 64, its end 622 would allow it to exit the recess 61 1 1, allowing the ring 61 to continue its rotation in the clockwise direction.
• the jumper 62 would come out of the hollow 61 1 1 and would be unable to reduce the number in the box, which would lead to a display problem.
• the variant illustrated in FIG. 14 and whose operation is detailed in FIGS. 16 to 20 thus allows a more precise control of the position of the ring 61 with respect to the variant illustrated in FIG. 1.
• the spring of FIG. recall 44 allows the ring 61 to make only one jump counterclockwise.
• the jumper 64 prevents the ring 61, following the rebound of the ring 61 against the return spring 44 via a tooth of the internal toothing of the ring 61, can rotate clockwise.

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• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Geometry (AREA)
• Electromechanical Clocks (AREA)
• Measurement Of Unknown Time Intervals (AREA)
• Transmission Devices (AREA)

Applications Claiming Priority (2)

Publications (2)

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ID=58398225

Family Applications (1)

Country Status (6)

Families Citing this family (5)

Family Cites Families (22)

• 2016
  • 2016-03-15 CH CH00348/16A patent/CH712217A2/fr not_active Application Discontinuation
• 2017
  • 2017-03-15 WO PCT/IB2017/051498 patent/WO2017158527A1/fr active Application Filing
  • 2017-03-15 US US16/085,175 patent/US10928777B2/en active Active
  • 2017-03-15 JP JP2019500038A patent/JP6941152B2/ja active Active
  • 2017-03-15 EP EP17712845.1A patent/EP3430481B1/de active Active
  • 2017-03-15 CN CN201780017695.6A patent/CN109416521B/zh active Active

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