EP4432018A1 - Uhrwerk, das einen automatischen aufzugsmechanismus umfasst - Google Patents

Uhrwerk, das einen automatischen aufzugsmechanismus umfasst Download PDF

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Publication number
EP4432018A1
EP4432018A1 EP23162695.3A EP23162695A EP4432018A1 EP 4432018 A1 EP4432018 A1 EP 4432018A1 EP 23162695 A EP23162695 A EP 23162695A EP 4432018 A1 EP4432018 A1 EP 4432018A1
Authority
EP
European Patent Office
Prior art keywords
winding
movement
mass
rotating arms
barrel
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
EP23162695.3A
Other languages
English (en)
French (fr)
Inventor
Laurent CALAME
Eric MAGNIN-FEYSOT
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.)
Manufacture dHorlogerie Audemars Piguet SA
Original Assignee
Manufacture dHorlogerie Audemars Piguet SA
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 Manufacture dHorlogerie Audemars Piguet SA filed Critical Manufacture dHorlogerie Audemars Piguet SA
Priority to EP23162695.3A priority Critical patent/EP4432018A1/de
Priority to PCT/IB2024/052498 priority patent/WO2024194761A1/fr
Publication of EP4432018A1 publication Critical patent/EP4432018A1/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
    • G04B5/00—Automatic winding up
    • G04B5/02—Automatic winding up by self-winding caused by the movement of the watch
    • G04B5/10—Automatic winding up by self-winding caused by the movement of the watch by oscillating weights the movement of which is not limited
    • G04B5/14—Automatic winding up by self-winding caused by the movement of the watch by oscillating weights the movement of which is not limited acting in both directions
    • 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
    • G04B45/02—Time pieces of which the clockwork is visible partly or wholly
    • 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
    • G04B5/00—Automatic winding up
    • G04B5/02—Automatic winding up by self-winding caused by the movement of the watch
    • G04B5/18—Supports, suspensions or guide arrangements, for oscillating weights
    • 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
    • G04B5/00—Automatic winding up
    • G04B5/02—Automatic winding up by self-winding caused by the movement of the watch
    • G04B5/18—Supports, suspensions or guide arrangements, for oscillating weights
    • G04B5/184—Guide arrangement of the moving weight in a circular course

Definitions

  • the present invention relates to the field of watchmaking and more particularly to a watch movement comprising an automatic winding mechanism.
  • This mechanism comprises a winding mass arranged to perform a circular translational movement.
  • Automatic winding mechanisms most often use a semi-circular oscillating weight mounted pivotally in the center of the watch movement along an axis perpendicular to the general plane of the latter.
  • a disadvantage of this type of oscillating weight lies in its location on the back of the watch case, hiding, at least in part, the watch movement. Such an arrangement is not always desirable, especially when the back is a sapphire crystal in order to make an original visual aspect of the movement visible.
  • CH706350 proposes a watch movement comprising a frame, various organs, including a barrel and gears mounted on the frame as well as an automatic winding mechanism for reloading the barrel.
  • This winding mechanism comprises a winding mass and transmission means arranged to transmit the movement of the winding mass to the barrel to wind it.
  • the winding mass is mounted articulated on at least two arms pivotally mounted on the frame.
  • the winding mass is further arranged to perform a circular translation movement which can be complete around the frame in a plane perpendicular to the general plane of the watch movement.
  • CH157093 And CH168493 disclose another example of a self-winding watch movement, comprising an unconventional oscillating weight.
  • the winding mechanism comprises a frame comprising in particular a barrel and a winding weight. The latter is connected to the frame by several arms whose axis of rotation is parallel to the general plane of the watch movement. The distance between the winding weight and the frame varies according to the position of the weight. It is therefore necessary, like CH706350 , to provide sufficient volume in the watch case for the movement of the winding mass.
  • the plane in which the winding mass oscillates according to the above mechanisms is not optimal in relation to the most frequent general movements of a wearer's arm, which are swinging movements of the arm along the body. This has a significant impact on the winding efficiency of the barrel.
  • An aim of the present invention is therefore to propose a watch movement comprising a winding mechanism automatic which does not hide the movement while solving, at least in part, the aforementioned problems of the prior art.
  • a watch movement comprising in particular a frame, gears, a barrel and an automatic winding mechanism for winding the barrel.
  • the winding mechanism comprises a winding mass mounted articulated on the frame by means of rotating arms so that the winding mass can perform a circular translational movement.
  • the winding mechanism further comprises transmission means arranged to transmit the movement of the winding mass to the barrel.
  • the winding mass is connected to the rotating arms so as to constrain the circular translational movement of the mass in a plane parallel to the general plane of the watch movement.
  • the rotating arms are further free to pivot through 360°.
  • the watch movement further comprises an armature secured to the winding mass or forming a single piece with the mass.
  • the rotating arms are pivotally connected to the armature.
  • the rotating arms are further arranged to pivot in a plane located between the armature and the frame.
  • the armature comprises at least a first and a second fixing part on which the rotating arms are connected, and at least a first and a second support each supporting a weight of the winding mass.
  • the fixing parts and the supports are each arranged alternately on the armature around a central part of the watch movement.
  • the weights are arranged on only one face of the frame.
  • the first and second fixing parts are each connected to the frame by two rotating arms.
  • the weights each comprise an external face intended to be mounted opposite a portion of the case middle of a watch case when the watch movement is mounted in the case, and an internal face opposite the external face.
  • the internal face of at least one of the weights comprises a clearance to be able to partially envelop at least one organ of the watch movement, in particular a gear train, when a circular translation movement is imparted to the winding weight.
  • At least one of the weights comprises a cutout for the passage of a control stem such as a time-setting stem.
  • the winding mass is articulated on the frame by means of three or four rotating arms.
  • the winding mass comprises three weights which are each arranged between two rotating arms.
  • the transmission means comprise a gear train engaged with the barrel ratchet. At least one of the rotating arms is secured to a transmission shaft comprising a transmission wheel engaged with the gear train and arranged to be driven in rotation by the rotation of said at least one rotating arm.
  • the transmission means comprise a pull lever and a push lever.
  • the pull and push levers comprise at a first end a pawl configured to respectively pull and push a tooth of the barrel ratchet or of a wheel engaged with the barrel ratchet, alternately so that the barrel ratchet is actuated in rotation in a single direction.
  • the pull and push levers each comprise a second end secured to one of the rotating arms.
  • At least one elastic member is integral with the winding mass. This elastic member is arranged to act on an actuable part of the traction lever and the push lever in order to constrain their respective pawl against the barrel ratchet or the wheel engaged with the ratchet.
  • Another aspect of the invention relates to a timepiece comprising the watch movement according to one of the above-mentioned embodiments.
  • the watch movement 10 comprises a frame 12, 12a, 12b, various organs, including a barrel 60, gears 11 and an automatic winding mechanism for winding the barrel 60.
  • the winding mechanism comprises a winding mass 14 connected to the frame 12 by several rotating arms, for example three or four rotating arms 30a, 30b, 30c, 30d so that a circular translation movement can be imparted to the winding mass 14 in a single plane whose orientation corresponds to that of the general plane of the watch movement.
  • This makes it possible to reduce the thickness of the watch movement compared to the existing circular translation automatic winding mechanisms mentioned above.
  • This also makes it possible to optimize the winding of the barrel, in particular because this plane corresponds to that of the natural swing of the arm of a wearer of a wristwatch, when the latter moves while walking.
  • the winding mass 14 comprises an armature 16 as well as two separate masses 18a, 18b, hereinafter referred to as weights, fixed to the armature 16.
  • the two weights 18a, 18b and the armature 16 may be in one piece according to one variant.
  • the armature 16 has a substantially rectangular or square shape arranged around a central part of the watch movement 10 in order to make this central part visible through a transparent back of a watch case containing the movement.
  • the transparent back may in particular be a sapphire crystal.
  • the armature 16 comprises two fixing parts 16a, 16b arranged facing each other and on either side of the central part of the watch movement as well as a first and a second support 16c, 16d on which the two weights 18a, 18b of the winding mass 14.
  • the two supports 16c, 16d preferably constitute, for the weights, support surfaces which extend opposite one another substantially perpendicular to the two fixing parts 16a, 16b.
  • These each comprise two counterbores 17a, 17b at the orifice of two screw holes.
  • Screws 22 are mounted in the screw holes with their end screwed into a hole in each rotating arm and their screw head embedded in the counterbore 17 as illustrated in figure 6 .
  • a bearing 23 is mounted between the screw body and the screw hole to ensure rotation of the armature 16 relative to the screws 22.
  • the winding mass may comprise three weights which are each arranged between two rotating arms which connect the armature to the frame of the watch movement.
  • the armature may comprise for this purpose three fixing parts which are each connected to the frame by a rotating arm. These three fixing parts are arranged around a central part of the watch movement alternately with three supports on which the three weights are fixed. These can form a single piece with the three supports of the armature according to a variant.
  • the shape of the armature is substantially rectangular according to the illustrated embodiment, it could have a substantially annular shape according to a variant.
  • three arms 30b, 30c, 30d of the four rotating arms can be mounted on simple pivots 32 while the fourth arm 30a is mounted on a transmission shaft according to the detailed description below.
  • the four rotating arms are mounted on two bridges 12a, 12b ( figure 1 ) located on two opposite sides of the watch movement 10 so that these rotating arms are located close to the four corners of the watch movement as can be seen in the figure 3 .
  • each pivot 32 extends perpendicular to the general plane of the watch movement so that the four rotating arms can pivot in a plane whose orientation is identical to the general plane of the watch movement in order to constrain the circular translation movements in this plane.
  • Each rotating arm 30a, 30b, 30c, 30d is further arranged to be free to rotate over 360°, in particular in a plane located between the armature and the bridges 12a, 12b of the frame, in order to be able to impart to the winding mass 14 the sequence of the circular translation movement illustrated by the Figures 9a to 9d .
  • the height of the visible face of the two bridges 12a, 12b relative to the frame 12 corresponds substantially to the thickness of the two weights 18a, 18b of the winding mass 14 in order to form two hollow volumes arranged on either side of the central part of the movement.
  • the two weights 18a, 18a can thus move inside these two volumes according to the circular translational movement of the winding mass 14.
  • the two weights 18a, 18b ( Figures 4a and 4b ) each comprise an external face 19a intended to be mounted opposite a portion of the case middle of a watch case when the watch movement is mounted in the case, and an internal face 19b opposite the external face.
  • the internal face 19b of at least one of the two weights 18a, 18b comprises a clearance 20 so that the winding mass 14 can partially and temporarily envelop an organ of the watch movement without coming into contact with the latter, in particular one or more gears 11, when a circular translation movement is imparted to the winding mass 14.
  • At least one of the weights 18a, 18b comprises a cutout 21 in order to form with the frame 12 an opening for the passage of a control stem, in particular a winding or time-setting stem 80.
  • the automatic winding mechanism further comprises transmission means for winding the barrel 60 according to the circular translational movement of the winding mass 14.
  • a gear train is engaged with the ratchet 70 of the barrel 60 and comprises a transmission wheel 42 secured to a transmission shaft 41 mounted on two bearings 41a, 41b and on which the fourth rotary arm 30a is fixed.
  • the transmission wheel 42 meshes with a conventional inverter 43 which comprises a first and a second clutch mobile 44, 45.
  • the transmission wheel 42 is engaged with a clutch wheel 44a of the first clutch mobile 44.
  • a clutch wheel 45a of the second clutch mobile 45 meshes with the clutch wheel 44a of the first mobile while the pinions 44b (only the pinion of the first clutch mobile is visible on the figure 6 ) of the two clutch mobiles are engaged with a first mobile 46 of a reduction gear.
  • the pinion of the first mobile 46 meshes with the wheel 47a of a second mobile 47 whose pinion 47b is engaged with the barrel ratchet 70 to actuate the rotation of the barrel shaft.
  • the operation of this type of reverser is well known to those skilled in the art and will therefore not be described.
  • first and second clutch mobiles can be of different types, for example ratchet, ball or spring.
  • a wolf-toothed wheel 72 secured to the barrel shaft cooperates with a ratchet 74 located at the end of a leaf spring 76.
  • the means of transmission to wind the barrel as desired circular translation movement of the winding mass 14, comprise a pull lever 50, and a push lever 52. These two levers comprise at a first end a pawl 50a, 52a configured to respectively pull and push a tooth of the barrel ratchet 70 or a tooth of an intermediate wheel engaged with the ratchet according to a variant not illustrated.
  • Two of the four rotating arms are connected to an actuable portion 50b, 52b located at a second end of the pull lever 50 and the push lever 52 by means of an axle 56 mounted through an opening 51, 53.
  • the latter can thus be actuated in rotation in a single direction according to the circular translational movement of the winding mass 14.
  • the armature 16 of the winding mass 14 comprises on a lower face at least one elastic member 54 which in particular is for example in the form of two spring blades 54a, 54b arranged to act on the actuable part 50b, 52b of the traction lever 50 and of the thrust lever 52 to constrain their respective pawl 50a, 52a against the barrel ratchet 70.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
EP23162695.3A 2023-03-17 2023-03-17 Uhrwerk, das einen automatischen aufzugsmechanismus umfasst Pending EP4432018A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP23162695.3A EP4432018A1 (de) 2023-03-17 2023-03-17 Uhrwerk, das einen automatischen aufzugsmechanismus umfasst
PCT/IB2024/052498 WO2024194761A1 (fr) 2023-03-17 2024-03-14 Mouvement horloger comprenant un mécanisme de remontage automatique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP23162695.3A EP4432018A1 (de) 2023-03-17 2023-03-17 Uhrwerk, das einen automatischen aufzugsmechanismus umfasst

Publications (1)

Publication Number Publication Date
EP4432018A1 true EP4432018A1 (de) 2024-09-18

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP23162695.3A Pending EP4432018A1 (de) 2023-03-17 2023-03-17 Uhrwerk, das einen automatischen aufzugsmechanismus umfasst

Country Status (2)

Country Link
EP (1) EP4432018A1 (de)
WO (1) WO2024194761A1 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB374417A (en) * 1930-02-21 1932-06-01 Hatot Leon Ets Improvements in self winding watches
CH157093A (fr) 1930-01-11 1932-09-15 Leon Hatot Societe Anonyme Ets Montre à remontage automatique.
CH168493A (fr) 1933-02-23 1934-04-15 Barbezat Fritz Montre-bracelet à remontage automatique.
CH706350A1 (fr) 2012-04-12 2013-10-15 Montres Corum Sarl Mouvement horloger comprenant un mécanisme de remontage automatique.
CH707942A2 (fr) * 2013-04-24 2014-10-31 Montres Corum S Rl Mécanisme de remontage automatique pour mouvement horloger.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH157093A (fr) 1930-01-11 1932-09-15 Leon Hatot Societe Anonyme Ets Montre à remontage automatique.
GB374417A (en) * 1930-02-21 1932-06-01 Hatot Leon Ets Improvements in self winding watches
CH168493A (fr) 1933-02-23 1934-04-15 Barbezat Fritz Montre-bracelet à remontage automatique.
CH706350A1 (fr) 2012-04-12 2013-10-15 Montres Corum Sarl Mouvement horloger comprenant un mécanisme de remontage automatique.
CH706350B1 (fr) * 2012-04-12 2016-11-30 Montres Corum Sàrl Mouvement horloger comprenant un mécanisme de remontage automatique.
CH707942A2 (fr) * 2013-04-24 2014-10-31 Montres Corum S Rl Mécanisme de remontage automatique pour mouvement horloger.

Also Published As

Publication number Publication date
WO2024194761A1 (fr) 2024-09-26

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