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
  • G04B19/04—Hands; Discs with a single mark or the like
  • G04B19/048—Hands; Discs with a single mark or the like having the possibility of indicating on more than one scale, e.g. hands with variable length which work on different scales
• • 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
  • G04B13/00—Gearwork
  • G04B13/001—Gearwork with the choice of adjustable or varying transmission ratio
• • 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
  • G04B13/00—Gearwork
  • G04B13/007—Gearwork with differential work
  • G04B13/008—Differentials
• • 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
  • G04B45/00—Time pieces of which the indicating means or cases provoke special effects, e.g. aesthetic effects
  • G04B45/0038—Figures or parts thereof moved by the clockwork
  • G04B45/0061—Moving parts of the clockwork, e.g. pendulum, hands in special form, mostly constructed as a figure

Definitions

• the present invention relates to an actuation mechanism for a flexible display hand driven by a clockwork movement of a watch.
• the present invention aims to meet the need mentioned above as well as others by providing a mechanism for actuating a flexible display needle making it possible to define the movement of a needle of flexible display as well as its shape and length changes independently of each other.
• the present invention relates to a mechanism for actuating a flexible display needle driven by a clockwork movement, the flexible display needle comprising a first drive barrel connected to a first end of a first flexible arm, and a second drive barrel connected to a first end of a second flexible arm, the first and second flexible arms being connected together at their second end by a tip, the first and second barrels drive being spaced apart from each other in a free, unconstrained state of the flexible display needle.
• the flexible display needle is arranged in a service position in which it has a defined shape and length and is in a stressed state, the first drive barrel and the second drive barrel being arranged so coaxial around an axis of rotation.
• the first drive barrel is mounted with a first defined preload angle
• the second drive gun is mounted with a second defined preload angle in the opposite direction to that of the first drive gun.
• the actuation mechanism is arranged to drive the flexible display needle in rotation and control its change in length
• the first differential mechanism comprising a first input to which the clockwork movement applies an angular rotation which determines the rotation of the flexible display needle on itself, this angular rotation also being applied with a gear ratio to a first input of the second differential mechanism, an angular phase shift rotation which determines a change in length of the needle flexible display needle being applied to a second input of the second differential mechanism, an output of the second differential mechanism which controls the change in length of the flexible display needle being applied to a second input of the first differential mechanism, an output of the first differential mechanism rotating the flexible display needle and controlling its change in length.
• the actuation mechanism according to the invention makes it possible, in a remarkable manner, to display two distinct pieces of information using a single flexible display needle.
• the first differential mechanism of the actuation mechanism according to the invention comprises two inputs and an output, a first input receiving an angular rotation applied by the clockwork movement which ensures the rotation of the flexible display needle on itself, the second input receiving the command to control the change in length of the flexible display needle, and the output ensuring the driving of the latter.
• the second differential mechanism of the actuation mechanism As for the second differential mechanism of the actuation mechanism according to the invention, one of its inputs receives, through a gear ratio, the angular rotation applied to the first differential mechanism by the clockwork movement, its second input receives an angular phase shift rotation applied by the clockwork movement which determines the change in length of the flexible display needle, and its output applies to the needle and to the second input of the first differential mechanism the command of flexible display needle length change.
• the actuation mechanism thus comprises two inputs independent of each other, one controlling the rotation of the flexible display needle, while the other controls the length of the latter.
• the rotation of the flexible display hand can be used to display the current time, while the change in length can be programmed to occur at the time of triggering of 'an alarm bell.
• the invention may also include one or more of the following characteristics, taken in isolation or in all technically possible combinations.
• the first differential mechanism is centered on a first axis of rotation D1 and is carried by a first planet carrier wheel to which the clockwork movement is intended to apply the angular angle rotation .
• This first planet carrier wheel forms the first input to the first differential mechanism.
• the first differential mechanism comprises a first solar pinion forming a first road intended to carry the first drive barrel, and a first solar mobile mounted free to rotate coaxially with the first solar pinion.
• the first solar mobile comprises a second sun pinion and a first sun wheel, the second sun pinion forming a second roadway intended to carry the second drive gun.
• the first sun gear and the second sun gear constitute the output of the first differential mechanism.
• the first pinion solar is arranged in meshing relationship with a first gear, the latter meshing with a second gear, itself being in meshing relationship with the second sun pinion, the first and second gears being arranged eccentrically on the first wheel satellite carrier.
• the second differential mechanism is centered on a second axis of rotation D2, and is carried by a second planet carrier wheel which is rotated by the first planet carrier wheel in a ratio d 'gears.
• the second planet carrier wheel constitutes the first input of the second differential mechanism.
• the second differential mechanism comprises a second solar mobile formed by a third sun pinion and by a second sun wheel, the latter being engaged with the first sun wheel of the first differential mechanism.
• Said second sun wheel forms the output of the second differential mechanism and said first sun wheel forms the second input of the first differential mechanism.

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• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Transmission Devices (AREA)
• Electromechanical Clocks (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=83271010

Family Applications (1)

Country Status (4)

Family Cites Families (2)

• 2023
  • 2023-09-07 EP EP23768267.9A patent/EP4584641A1/de active Pending
  • 2023-09-07 JP JP2025514361A patent/JP2025528554A/ja active Pending
  • 2023-09-07 CN CN202380063583.XA patent/CN119836600A/zh active Pending
  • 2023-09-07 WO PCT/EP2023/074609 patent/WO2024052467A1/fr not_active Ceased

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