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
  • G04B19/20—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
  • G04B19/00—Indicating the time by visual means
  • G04B19/06—Dials
  • G04B19/065—Dials with several parts
• • 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

Definitions

• the present invention relates to a mechanism for 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 instantly to the initial position by turning rapidly in the opposite direction to 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.
• the minutes indicator every hour creates an animation on the face of the watch.
• Jumping displays are also known, in which a time indicator jumps almost instantaneously from one value to another.
• 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.
• 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.
• An object of the present invention is to achieve a watch movement combining both a retrograde display and a jumping display. [0005] As such, watches combining a display
• EP0950932B1 describes for example a watch comprising a display of minutes on 180 ° and a display jumping hours on a disk. The hour disc is operated by a spiral cam.
• CH691833 describes another example of a watch having a display jumping hours and a retrograde display minutes.
• a minute rake has two toothed portions, one for transmitting the movement to the minute display member and the other for being driven by a pinion with a missing tooth attached to the hour wheel and driven by one turn per hour.
• the instantaneous return of the rake corresponds to the displacement of the last tooth of the rake at the level of the missing tooth of the pinion.
• CH698132 relates to a watch displaying jumping hours and retrograde display minutes, in which the hour jump of a drive hours and the return of the retrograde hand are all caused by the same cam acting on a connecting rod .
• EP1 134627B 1 relates to a retrograde triple display (minutes, hours, dates), the hours display being jumping.
• the retrograde display of hours is by means of a rake going in both directions.
• WO9740424 relates to a watch comprising a retrograde minute display 180 ° and a jumping digit display hours carried by a disk and visible through a window.
• EP0788036B 1 relates to a watch with a retrograde display 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.
• CH681761 relates to a watch having a retrograde display of the date on 240 ° by means of a pinion which lacks teeth.
• EP2010971 B 1 relates to a watch comprising a retrograde display of a time information such as the hours on an angular sector of 270 °.
• the retrograde module includes a cam and a rake.
• EP2595006 relates to a mechanical device for a display jumping hours.
• DE10200284C1 relates to a display showing jumping hours and displaying minutes on a sector of 330 °.
• a decoupling element is provided between the minute display wheel and the minute drive star.
• CH688068 relates to a retrograde display of seconds on an angular sector by means of a pinion of minutes which lacks teeth and meshing with a rake.
• An object of the present invention is to provide a retrograde display mechanism which differs from existing solutions.
• Another object of the present invention is to provide a jumping display mechanism driven by a retrograde display mechanism in a manner different from the known mechanisms.
• Another object of the invention is to provide a simplified retrograde and jumping display method. According to the invention, these objects are achieved by means of a
• mechanism for watch movement comprises a cam, a rake driven by the cam, a retrograde mobile driven by the rake and carrying a retrograde indicator to display a first time data, the rake and the retrograde mobile being arranged to rotate in the same direction; meaning.
• the mechanism for watch movement comprises a cam, a rake driven by the cam, a retrograde mobile driven by the rake and carrying a retrograde indicator to display a first time data, the end of the rake has an opening provided with an internal toothing, the retrograde mobile can be driven by the internal toothing.
• the direction of rotation of the rake is determined by the shape and the direction of rotation of the cam, for example a snail cam. It is desirable to provide a cam which rotates counterclockwise during the usual operation of the watch; this makes it possible to train it directly from the hour wheel of a conventional movement, which usually turns clockwise. The rake driven by the periphery of the cam then rotates clockwise.
• the claimed mechanism which allows to drive the retrograde mobile directly in the same direction as the rake, thus eliminates an intermediate referral, and thus to limit the number of parts and play in the wheel.
• the mechanism may have a rake whose end has an opening provided with an internal toothing, the mobile
• retrograde can be driven by the internal teeth. Only a portion of the inner opening, for example the portion of the side opposite the cam, may be provided with a toothing.
• the end of the rake provided with two branches separated by an opening is more rigid than a conventional end with a single branch, which limits the play with the retrograde mobile.
• This solution also has the advantage of offering an aesthetic appeal due to the unusual shape of the rake in a retrograde display mechanism.
• the rotation in the same direction of the rake, the retrograde mobile and the retrograde indicator adds to the unusual character of the retrograde display device according to the invention.
• the mechanism for watch movement may comprise a cam, a rake driven by the cam, a retrograde mobile driven by the rake and carrying a retrograde indicator to display a first time data, the rake and the retrograde moving wheel being preferably arranged to rotate in the same direction, a jumping display ring for displaying a second time indication, the jumping display ring having an internal toothing, the rake comprising a driving member cooperating with the internal toothing for driving the display ring jumping in a jumping manner.
• the cam can be driven by the movement of the watch by means of an intermediate or movable friction reminder of high average.
• This solution also offers the advantage of being new and different from existing solutions.
• the watch movement comprises a correction mechanism for correcting the retrograde mobile bidirectionally; and an organ
• This embodiment thus has the advantage over the prior art of allowing a simple and fast correction of the retrograde indicator, for example the minutes indicator.
• the corrections of the retrograde indicator in the clockwise direction are transmitted to the ring of jumping hours.
• 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.
• 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. By avoiding transmitting the corrections in the counterclockwise direction to the ring of jumping hours, this avoids having to modify the drive mechanism of this ring.
• This construction thus makes it possible to realize a simple correction mechanism, making it possible to perform a large number of
• 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 mobile off the beach. For example, if the retrograde mobile displays minutes, the
• the mechanism may prevent counter-clockwise correction when the retrograde minute indicator indicates a value within a range including the 60 minute. This avoids the risk of accidentally moving the jumping hour indicator by a counter-clockwise correction mobile minutes in this range.
• This correction locking mechanism can be linked to a cam follower, which can be on the rake, and block the rotation of a snail cam in one of two directions of rotation, when this snail cam is near the probe jump position.
• the internal toothing linked to the jumping display ring may comprise a plurality of teeth with asymmetrical flanks, so that the drive member of the rake can abut against a flank of a tooth of the internal toothing, to drive the jumping display ring when the rake rotates counterclockwise and to slide on another side of a tooth of the internal toothing or not to be in contact with the internal toothing when the rake rotates in direction schedule.
• the drive member of the rake can be mounted on the rake by means of an axis allowing it to rotate.
• the mechanism may comprise a spring mounted on said rake and exert a force to support the drive member against said internal toothing.
• the drive member may be a tooth or a finger.
• the first time indication may be the current time
• the second time indication may be the current minute
• the method of displaying time indications by means of a watch movement mechanism described above may comprise the steps in which:
• the rake causes the retrograde mobile and the indicator
• the rake causes the display ring to jump from the current time
• the method allows the jumping display ring to be rotated in a jumping manner by a regulating member mounted on the rake.
• the clockwise rotation of said rake can cause the clockwise rotation of the retrograde mobile and the counterclockwise rotation of said jumping display ring to display the current time.
• said rake when the cam rotates counterclockwise and causes the rotation of said rake in the clockwise direction, said rake, by turning clockwise, may cause rotation in the same direction of the retrograde mobile, the indicator and finger, and said finger can move along a side of the internal toothing linked to the jumping display ring without causing the rotation of said ring.
• the first end of the rake falls from the top of said cam, the second end of the rake is rotated in the counterclockwise direction almost instantaneously, causing almost instantaneous rotation in the same direction of the retrograde mobile, the tooth, indicator and jumping billboard that carries the hours.
• the mechanism may be constituted by a watch movement, by a complication intended to cooperate with a movement, by an additional module, etc.
• the described mechanism can also be used for displaying jumping indications other than time, and / or for the retrograde display of indications other than minutes.
• FIG. 1 illustrates a top view of the main components of the mechanism according to the invention.
• FIG. 2 illustrates a top view of the main components of the mechanism according to the invention at the minute 0.
• FIG. 3 illustrates a view from above of the main components of the mechanism according to the invention at minute 17.
• FIG. 4 illustrates a view from above of the main components of the mechanism according to the invention at minute 35.
• FIG. 5 illustrates a view from above of the main components of the mechanism according to the invention at minute 59.
• FIG. 6 illustrates a view from above of the main components of the mechanism according to the invention at minute 60.
• FIGS. 7 to 10 illustrate several top views of the main components of the mechanism according to the invention during the jump of the minute
• FIG. 1 1 illustrates a top view of the main components of the mechanism according to the invention at the minute 0.
• FIG. 1 illustrates an exemplary retrograde mechanism 1 according to the invention. It comprises a retrograde indicator 2 represented in the form of a minute hand in this embodiment.
• the retrograde minute indicator 2 is mounted on the axis of the retrograde wheel 20.
• the retrograde wheel 20 has an external toothing 200.
• the rake 3 has a first end 31 pressed against the periphery of the snail cam 5 with the rake spring 33.
• the second end 32 of the rake 3 has an oblong opening provided with an internal toothing 320.
• the rake 3 pivots under the action of the snail cam of the pivot point.
• the internal toothing 320 of the second end of the rake 32 meshes with the external toothing 200 of the retrograde wheel 20 so that the retrograde indicator 2 carried by the retrograde wheel 20 rotates in the same direction that the second end of the rake 32.
• the movement of the rake is transmitted to a drive member, here constituted by a tooth 4 articulated on the second end of the rake 32 by means of the shaft 41.
• a return spring 42 exerts a restoring force on the tooth 4 to press it on the toothing 610.
• the first end of the rake 31 rotates the snail cam 5 carried by a triggering drive wheel 52.
• This trigger driving wheel 52 is driven by a wheel of the train so that the minute indicator 2 travels.
• the minute scale 1 1 (Figs 2 to 1 1) in 60 minutes (or 60 minutes minus the return time).
• the mechanism 1 comprises a jumping display ring 60 bearing the time indications 6 allowing the display of the current time in a window 10 ( Figures 2 to 1 1).
• the jumping display ring 60 is driven by the drive ring 61 of smaller 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 and there is no missing tooth.
• the teeth have two asymmetrical flanks 6100 and 6101.
• the first flank 6100 is almost parallel to the diameter of the drive ring 61 and drives the drive ring 61 by means of the drive member (tooth 4.
• the tooth 4 acts as a drive for the jumping hours display.
• the second flank 6101 is curved; the average inclination forms an angle of less than 30 ° with the tangent of the drive ring 61, so that when the tooth 4 is in contact with the second sidewall 6101, it can slide on this second sidewall 6101 without driving it, nor driving the drive ring 61.
• 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 receive the end 620 of a positioning jumper 62.
• the jumper 62 thus cooperates with the external toothing 61 1 to ensure a centering of the time indications in the window 10 ( Figure 2).
• the end 620 of this jumper 62 opposes the displacement of the drive ring 61 by engaging in the recess 61 1 1 between the teeth 61 of the external toothing of the drive ring 61.
• stiffness of the jumper 62 is chosen so that the jumper 62 keeps in place the drive ring 61 when it is not driven by the tooth 4 and allow the end of the jumper 620 to disengage from the hollow 61 1 1 of the external toothing 61 1 linked to the jumping display ring 60 under the action of the tooth 4 and thanks to a rake spring 33.
• the jumper 62 has a first end (or outlet end) and a second end (or input end). Both ends have a non-zero inclination with respect to the vertical walls of the external toothing 61 1 of the drive ring 61.
• the jumper 62 cooperates with a jumper spring 63.
• the first end of the jumper has a non-zero inclination relative to the recesses of the outer toothing of the drive ring 61; the second end is then substantially parallel to the edges of these recesses when the jumper thus modified is engaged in the recess.
• This particular shape of jumper blocks a clockwise rotation of the drive ring 61.
• the second end of the jumper is configured to block a clockwise rotation of the drive ring 61, and to avoid a display error during an impact for example.
• FIG. 2 illustrates the mechanism just after the return of the retrograde hand minute 2, which then points to the minute 0.
• the first end of the rake 31 is supported against the smaller diameter of the snail cam 5.
• the retrograde mobile 20 meshes with the internal toothing 320 in the opening of the rake.
• the tooth 4 is not in contact with the internal toothing 610 of the jumping display ring 60.
• FIG. 3 corresponds to a position of the minute hand 2 to the minute 17.
• the snail cam 5, driven counterclockwise by the teeth of the medium-sized friction wheel 9 (FIG. 1) causes the clockwise movement of the second end of the rake in the figure to move the needle. minutes 2 clockwise along the scale of minutes 1 1.
• the drive member 4 (tooth) bears against the top of a tooth of the internal toothing of the ring
• the drive ring 61 and the jumping display ring 60 therefore remain stationary, their position being fixed by the positioning jumper 62 which cooperates with the recesses 61 1 1 on the outer periphery of the drive ring 61 (Fig. 1)
• FIG. 4 corresponds to a position of the minute hand 2 at the minute 35.
• the retrograde handwheel 20 continues to turn clockwise and the hand of the minutes 2 to move clockwise along the minute scale 1 1.
• the drive member 4 teeth comes into contact with an oblique flank 6101 of the internal toothing 610 of the drive ring 61 (FIG 1), without having a hold on she.
• the ring
• FIG. 5 corresponds to a position of the minute hand 2 at the minute 59.
• the first end of the rake 31 is in contact with the snail cam 5 near the portion 51 of maximum diameter of this last.
• the driving member 4 comes into contact with a vertex of the internal toothing 610. During the interval 0 to 59 minutes, the tooth 4 slides along the toothing of the ring
• Figure 6 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 cam 5.
• the drive member 4 teeth has exceeded the the top of the internal toothing 610 and is engaged with a first flank 6100 of the internal toothing 610 of the drive ring 61 (FIG 1). This ring is always held in place by the positioning jumper 62.
• Figures 6 and 7 illustrate the beginning of the return to the 0 minute of the retrograde indicator 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 positioned at the minute 55 and the tooth 4.
• the drive ring 61 is then driven counterclockwise by the tooth 4, thanks to the rake spring 33 which disarms progressively.
• the rake spring 33 (FIG 1) transmits to the jumping display ring 60 (FIG 1) sufficient energy to pull out the end 620 of the jumper.
• Figures 8 and 9 illustrate the continuation of the return of the retrograde indicator.
• the retrograde indicator is positioned respectively at minutes 40 and 25.
• the tooth 4 moves along the first flank of the internal toothing 610. Through the aperture 10, it is possible to observe the
• Figure 10 illustrates the end of the return of the retrograde indicator.
• the retrograde indicator is positioned at the minute 17 and the tooth 4 is almost at the top of the internal toothing 610 linked to the jumping display ring 60, it is soon no longer in engagement with the internal toothing 610.
• the window 10 we can observe the new jumping display element 6.
• the positioning jumper 62 not shown, is
• FIG. 11 illustrates the return of the retrograde indicator to the minute 0.
• the retrograde indicator is positioned at the minute 0 and the tooth 4 is no longer in contact with the internal toothing 610 linked to the ring.
• the first end of the rake is located at the smallest diameter of the cam 5. Through the aperture 10, the new position of the jumping display element 6 can be observed.
• the minutes are displayed by the position of the retrograde indicator 2 on a scale of minutes not shown.
• the minute scale covers an arc of less than 360 ° but greater than 180 °, for example 240 °.
• the window displaying the current time is next to the opening portion in the scale, at 6 o'clock in the example shown.
• the mechanism allows the retrograde display of minutes and display jumping hours. Such a mechanism may, however, be used for displaying jumping indications other than hours, and / or for the retrograde display of indications other than minutes. Reference numbers used in the figures

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

Applications Claiming Priority (2)

Publications (2)

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Family Applications (1)

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• 2016
  • 2016-03-15 CH CH00350/16A patent/CH712219A2/fr not_active Application Discontinuation
• 2017
  • 2017-03-15 US US16/085,520 patent/US11003139B2/en active Active
  • 2017-03-15 EP EP17712847.7A patent/EP3430482B1/de active Active
  • 2017-03-15 WO PCT/IB2017/051511 patent/WO2017158536A1/fr active Application Filing
  • 2017-03-15 JP JP2019500039A patent/JP6941153B2/ja active Active
  • 2017-03-15 CN CN201780017583.0A patent/CN109313412B/zh active Active

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