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EP4383013A1 - Uhrvorrichtung zur umwandlung einer ersten drehung in eine zweite drehung - Google Patents

Uhrvorrichtung zur umwandlung einer ersten drehung in eine zweite drehung Download PDF

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Publication number
EP4383013A1
EP4383013A1 EP22212415.8A EP22212415A EP4383013A1 EP 4383013 A1 EP4383013 A1 EP 4383013A1 EP 22212415 A EP22212415 A EP 22212415A EP 4383013 A1 EP4383013 A1 EP 4383013A1
Authority
EP
European Patent Office
Prior art keywords
rotating
cam follower
watchmaking
output member
rotating output
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP22212415.8A
Other languages
English (en)
French (fr)
Inventor
Mathieu MARANGÉ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Patek Philippe SA Geneve
Original Assignee
Patek Philippe SA Geneve
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Patek Philippe SA Geneve filed Critical Patek Philippe SA Geneve
Priority to EP22212415.8A priority Critical patent/EP4383013A1/de
Priority to PCT/IB2023/062352 priority patent/WO2024121789A1/fr
Publication of EP4383013A1 publication Critical patent/EP4383013A1/de
Pending legal-status Critical Current

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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
    • G04B13/00—Gearwork
    • G04B13/002—Gearwork where rotation in one direction is changed into a stepping movement

Definitions

  • the present invention relates to a watchmaking device for transforming a first rotation into a second rotation.
  • the second rotation is for example at least partly jerky.
  • Such a device can be used for example for the jumping display of a temporal quantity of the hour, minute, second, date, day, week or other type or for driving a automaton.
  • a continuously driven seconds wheel meshes with an intermediate wheel which itself meshes with a jumping seconds wheel.
  • the intermediate wheel is carried by a rocker whose nose cooperates with a locking wheel to immobilize it.
  • This locking wheel is attached to a pinion which meshes with the jumping wheel.
  • the continuously driven seconds wheel transmits its rotation to the wheel intermediate. As long as the jumping seconds wheel is blocked by the action of the tip of the lever on the locking wheel, the rotation of the intermediate wheel causes the rotation of the lever until the tip leaves the tooth of the wheel. blockage against which he was leaning.
  • the device described in the patent application CH 709375 comprises a continuously driven seconds wheel and a pawl holder coaxial with this seconds wheel.
  • a ratchet is articulated around a pin.
  • the pawl holder is connected to the seconds wheel by a spiral spring.
  • the ratchet comprises a nose engaged in internal teeth of a fixed crown.
  • it carries a pin engaged in an oblong hole in the seconds wheel, allowing the pawl to oscillate when the seconds wheel turns.
  • the seconds wheel rotating continuously, arms the balance spring and at the same time activates the pawl.
  • the ratchet leaves one tooth on the ring gear, it jumps and stops against the next tooth.
  • the ratchet holder thus moves in jumps.
  • This device is bulky both in height and in projection in a plane perpendicular to the height.
  • the present invention aims to propose a watchmaking device for transforming a first rotation into a second rotation which is relatively space-saving, at least in height.
  • the present invention also proposes a timepiece, for example a watch, more particularly a wristwatch, comprising such a timepiece device.
  • two elements are said to be coplanar when they have substantially the same thickness (height) and substantially the same median plane perpendicular to this thickness.
  • a watchmaking device 1a for transforming a first rotation into a second rotation, at least partly jerky, according to a first embodiment of the invention.
  • This device 1a is intended to be integrated into a movement of a timepiece, typically a watch. It comprises a rotating input member 2, a rotating output member 3, a fixed crown 4 having internal teeth 5, a lever 6 and an intermediate member 7 movable relative to the rotating input and output members 2, 3 and crown 4.
  • the rotating input member 2, the rotating output member 3, the crown 4 and the intermediate member 7 are coaxial.
  • the output rotating member 3, the lever 6 and the intermediate member 7 are part of a monolithic part which is coplanar with the input rotating member 2 and the crown 4, the input rotating member 2 being located in the center of the device 1a and the crown 4 constituting the periphery of the device 1a.
  • the lever 6 is connected, in the monolithic part, to the intermediate member 7 by a first flexible guide 8, here a simple elastic blade.
  • the rotating output member 3 and the intermediate member 7 are connected, in the monolithic part, by a second flexible guide 9, here consisting of two elastic RCC blades (“Remote Center Compliance”; flexible guide with offset center of rotation) .
  • the lever 6 can pivot relative to the intermediate member 7 around a pivot point P, which is located approximately one third of the length of the blade 8 measured from the lever 6, and the intermediate member 7 can pivot around the imaginary axis A common to the members 2, 3, 4, 7 while being guided by the rotating output member 3.
  • the rotating output member 3 is integral with a display disc (for example of the type of disk 17 illustrated on the figure 2 ) which is guided in rotation around the axis A by the shaft on which the rotating input member 2 is mounted.
  • the rotating output member 3 has ears 10 adapted to receive pins glued, soldered or otherwise attached to the display disc.
  • the rotary input member 2 is continuously rotated around the axis A in a clockwise direction by the movement motor member.
  • the rotary input member 2 is integral with a pinion or a wheel (not shown) kinematically connected to the finishing gear of the movement.
  • the rotary input member 2 comprises two meshing teeth 11 which accommodate between them a first meshing tooth 12 of the lever 6.
  • a second meshing tooth 13 of the lever 6, diametrically opposite the first with respect to the pivot point P, is engaged between two meshing teeth 14 of the rotating output member 3.
  • the internal teeth 5 are composed of wave-shaped teeth each comprising a stopping flank 15 against which a nose 16 of the lever 6 can rest under the action of the flexible guides 8, 9.
  • the rotation of the rotating member input 2 slides the nozzle 16 on the stopping side 15 on which it is located and pivots the lever 6 around its pivot point P in the counterclockwise direction by deforming the flexible guides 8, 9 until the nose 16 comes out of the teeth 5.
  • the lever 6 is released and the return force of the flexible guides 8, 9 causes it to fall onto the stopping side 15 of the next tooth , driving with it the output member 3 by its second meshing tooth 13.
  • the output member 3 and the display disc thus move in jumps, which makes it possible, for example, to digitally display the current time, the units and tens of the current minutes (see the display of the units of the minutes by disk 17 on the figure 2 ), a timed time, a countdown, the date, the day, the week, the power reserve, or other.
  • This device 1a is compact in height thanks to its planar structure, in particular thanks to the coplanar arrangement of the rotating member 3 and the lever 6.
  • the pivot point P of the lever 6 moves relative to the crown 4, to the output member 3 and to the frame on which the device 1a is mounted during the sliding of the nozzle 16 on the stopping side 15.
  • the pivot point P which allows the lever 6 to escape from the stopping flank 15.
  • This allows to reduce the amplitude of rotation of the lever 6 around the pivot point P, therefore the height of the teeth of the internal teeth 5, therefore the size of the device 1a in its plane.
  • a reduced amplitude of rotation of the lever 6 also reduces the energy consumption of the device 1a.
  • the mobility of the pivot point P also makes it possible to reduce the stresses applied in the return spring of the lever 6, namely here the first flexible guide 8, or to reduce the dimensions of the return spring without increasing the stresses it undergoes.
  • this device 1a offers great freedom as to the movement that we wish to produce at the output.
  • Device 1a can be considered as a differential in which one of the two inputs controls the other to authorize only one rotation scenario.
  • the input rotating member 2 is a differential input sun gear
  • the lever 6 is a satellite
  • the intermediate member 7 is the planet carrier
  • the output rotating member 3 is the output sun gear.
  • the crown 4 is typically fixed, as already indicated, but it could be rotated to, for example, vary the display speed and/or the stopping positions of the lever 6.
  • the stopping flanks 15 of the teeth of the crown 4 together form a cam surface which is followed by a cam follower, in this case the lever 6 with its beak 16, and which surrounds the cam follower, the rotating member d the inlet 2, the rotating output member 3 and the intermediate member 7.
  • a second embodiment of the watchmaking device according to the invention is illustrated in figure 2 and designated by reference 1b. It differs from the first embodiment essentially in that the rotary input member 2 and the lever 6 mesh via two toothed sectors and in that the lever 6 and the rotary output member 3 also mesh via two toothed sectors.
  • the display disc 17 is replaced by a needle 18, for example a dead seconds hand, secured to the rotating output member 3 and guided in rotation around the axis A by the shaft of the rotating input member 2.
  • the watchmaking device 1d comprises two levers 6a, 6b controlled by the organ rotary input 2 and the rotary output member 3 is in two parts 3a, 3b secured by the display disk or other display member.
  • Two monolithic parts, coplanar and symmetrical with respect to the axis A each comprise one of the two levers 6a, 6b, one of the two parts 3a, 3b of the rotating output member 3, an intermediate member 7a, 7b, an elastic blade 8a, 8b articulating the lever 6a, 6b to the intermediate member 7a, 7b and an elastic blade 9a, 9b connecting the intermediate member 7a, 7b to the rotating output member 3 for guiding the intermediate member in rotation 7a, 7b.
  • the levers 6a, 6b cooperate with the internal teeth 5 out of phase.
  • a larger number of levers and corresponding monolithic parts can of course be provided.
  • Providing several levers makes it possible to reduce the number of teeth of the crown 4 and to guarantee good repositioning of the levers on the stopping sides 15.
  • the assembly comprising the lever 6, the intermediate member 7 and the rotating output member 3 is no longer monolithic.
  • the lever 6 and the intermediate member 7 are here distinct parts articulated together by a pivot connection 19 and the intermediate member 7 is guided in rotation around the axis A by a slide in an arc of a circle 20 which the rotating output member 3.
  • the spring of the lever 6, constituted by the first and second flexible guides 8, 9 in the previous embodiments, is here formed by a blade 21, one end of which is joined to the rotating input member 2 and the other end, free, rests on the back of the lever 6.
  • the rotating input member 2, the rotating output member 3, the crown 4, the lever 6, the intermediate member 7 and the blade 21 are coplanar.
  • FIG. 6 A sixth embodiment is illustrated in Figure 6 .
  • the watch device 1f according to this sixth embodiment is similar to the watch device 1a according to the first embodiment.
  • the intermediate member 7 comprises a guide arm 22 which matches a curved portion 23 of the lever 6 concentric with the pivot point P of the lever 6 relative to the member intermediate 7 to guarantee precise rotational guidance of the lever 6 relative to the intermediate member 7.
  • This guide arm 22 may comprise projecting parts 24 forming guide pads in contact with the curved portion 23.
  • This sixth embodiment can be modified by making the connecting surface 25 concentric with the axis A so as to transform it into a sliding surface with which the nose 16 of the lever 6 can cooperate to cause the rotating member to perform output 3 a continuous movement after the series of jumps caused by the teeth 5.
  • the cam surface is constituted by the stopping flanks 15 and by the surface 25.
  • a 1g watch device differs from the watchmaking device 1f according to the sixth embodiment in that the intermediate member 7 and the meshing between the lever 6 and the rotating output member 3 are removed, the lever 6 being connected by the flexible guide 8 directly to the rotating output member 3.
  • the lever 6 therefore rotates around a pivot point which is fixed during the sliding of the nozzle 16 on the stopping flank 15 of an internal tooth of the crown 4.
  • the rotating output member 3 is driven by the lever 6 via the flexible guide 8.
  • a 1 hour watch device differs from the watchmaking device 1f according to the sixth embodiment in that the cam surface with which the beak 16 cooperates is constituted by a sliding surface 26 coplanar with the monolithic part 3, 6, 7, 8, 9 and whose distance from axis A varies.
  • the cooperation between the nozzle 16 and this sliding surface 26 produces a continuous movement, but at variable speed, of the rotating output member 3.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission Devices (AREA)
EP22212415.8A 2022-12-09 2022-12-09 Uhrvorrichtung zur umwandlung einer ersten drehung in eine zweite drehung Pending EP4383013A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP22212415.8A EP4383013A1 (de) 2022-12-09 2022-12-09 Uhrvorrichtung zur umwandlung einer ersten drehung in eine zweite drehung
PCT/IB2023/062352 WO2024121789A1 (fr) 2022-12-09 2023-12-07 Dispositif horloger de transformation d'une première rotation en une deuxième rotation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22212415.8A EP4383013A1 (de) 2022-12-09 2022-12-09 Uhrvorrichtung zur umwandlung einer ersten drehung in eine zweite drehung

Publications (1)

Publication Number Publication Date
EP4383013A1 true EP4383013A1 (de) 2024-06-12

Family

ID=84487794

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22212415.8A Pending EP4383013A1 (de) 2022-12-09 2022-12-09 Uhrvorrichtung zur umwandlung einer ersten drehung in eine zweite drehung

Country Status (2)

Country Link
EP (1) EP4383013A1 (de)
WO (1) WO2024121789A1 (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH348362A (fr) * 1959-02-21 1960-08-15 Gigandet Charles Mécanisme d'aiguille sautante pour pièce d'horlogerie
CH702137B1 (fr) 2007-02-05 2011-05-13 Patek Philippe Sa Geneve Dispositif d'entraînement et de réglage d'un compteur instantané et pièce d'horlogerie comportant un tel dispositif.
CH707182A2 (fr) 2012-11-14 2014-05-15 Patek Philippe Sa Geneve Dispositif horloger.
CH707183A2 (fr) 2012-11-14 2014-05-15 Patek Philippe Sa Geneve Dispositif horloger.
CH707181A2 (fr) 2012-11-14 2014-05-15 Patek Philippe Sa Geneve Dispositif horloger, notamment un dispositif d'affichage sautant.
CH709375A1 (fr) 2014-01-28 2015-08-28 Jérôme De Witt Dispositif pour indication sautante d'une pièce d'horlogerie.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH348362A (fr) * 1959-02-21 1960-08-15 Gigandet Charles Mécanisme d'aiguille sautante pour pièce d'horlogerie
CH702137B1 (fr) 2007-02-05 2011-05-13 Patek Philippe Sa Geneve Dispositif d'entraînement et de réglage d'un compteur instantané et pièce d'horlogerie comportant un tel dispositif.
CH707182A2 (fr) 2012-11-14 2014-05-15 Patek Philippe Sa Geneve Dispositif horloger.
CH707183A2 (fr) 2012-11-14 2014-05-15 Patek Philippe Sa Geneve Dispositif horloger.
CH707181A2 (fr) 2012-11-14 2014-05-15 Patek Philippe Sa Geneve Dispositif horloger, notamment un dispositif d'affichage sautant.
CH709375A1 (fr) 2014-01-28 2015-08-28 Jérôme De Witt Dispositif pour indication sautante d'une pièce d'horlogerie.

Also Published As

Publication number Publication date
WO2024121789A1 (fr) 2024-06-13

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