EP4113216A1 - Uhrwerk und uhr, die ein solches uhrwerk umfasst - Google Patents

Uhrwerk und uhr, die ein solches uhrwerk umfasst Download PDF

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Publication number
EP4113216A1
EP4113216A1 EP21182846.2A EP21182846A EP4113216A1 EP 4113216 A1 EP4113216 A1 EP 4113216A1 EP 21182846 A EP21182846 A EP 21182846A EP 4113216 A1 EP4113216 A1 EP 4113216A1
Authority
EP
European Patent Office
Prior art keywords
assembly
sub
cam
rotation
movement according
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
EP21182846.2A
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English (en)
French (fr)
Inventor
Arnaud Faivre
Gaël RENAUD
Eric Coudray
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.)
Tec Ebauches SA
Original Assignee
Tec Ebauches 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 Tec Ebauches SA filed Critical Tec Ebauches SA
Priority to EP21182846.2A priority Critical patent/EP4113216A1/de
Publication of EP4113216A1 publication Critical patent/EP4113216A1/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
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/20—Compensation of mechanisms for stabilising frequency
    • G04B17/28—Compensation of mechanisms for stabilising frequency for the effect of imbalance of the weights, e.g. tourbillon
    • G04B17/285—Tourbillons or carrousels

Definitions

  • the present invention relates to the field of horology and in particular to mechanical horology. More specifically, the invention relates to a timepiece movement comprising a plate, a motor system and a gear train driven in rotation by the motor system
  • the present invention also relates to a timepiece comprising such a timepiece movement.
  • the moving parts of the timepiece are each arranged in a plane, the different planes of the different moving parts being parallel to each other, the moving parts being able to be moved only in their respective plane, generally in rotation around an axis perpendicular to the plane of the mobile.
  • the present invention proposes to produce a watch movement in which certain components move according to a longitudinal movement with respect to a general axis of rotation of the mobiles of the watch or according to a movement perpendicular to the plane of the mobile. In this way, the component approaches and moves away from the crystal of the watch and from the view of the user.
  • a longitudinal movement evokes a beating of a biological organism and gives the timepiece a “living” aspect giving this timepiece a new, aesthetic and attractive appearance.
  • the object of the invention is also achieved by a timepiece comprising such a movement.
  • a horological complication such as for example a carousel, a tourbillon, a power reserve, phases of the moon etc. or decor having at least partly conventional construction.
  • This complication or this decor is mounted in such a way that it is mobile in an unconventional direction.
  • the complications include mobiles pivoting about an axis which is perpendicular to the general plane of a plate of the watch. However, these mobiles remain in a single plane when they are spin.
  • the complications and/or decorations can be mobile or fixed in rotation around an axis of rotation.
  • the timepiece movement 10 is intended to be placed in a case (not shown) of a timepiece.
  • This timepiece comprises, in a conventional manner, a plate 11 supporting in particular a motor system 12 comprising in particular a barrel 13, and at least one cog 14 formed of a train of gears driven in rotation by the motor system 12.
  • the plate 11 also supports a mobile assembly 15 which is detailed below.
  • the components of the motor system 12 and of the gear train are linked to the plate 11 and always remain in the planes in which they can rotate around their respective axis of rotation.
  • the plate 11 defines a general theoretical plane, which is called “horizontal plane” in this text.
  • the components of the gear train 14 and of the motor system 12 can pivot around axes perpendicular to the general plane of the plate or horizontal plane. These axes are referred to here as vertical axes. It should be noted that the majority, or even all of the parts forming the gear train can pivot around axes which are parallel to each other, the notion of “parallel” encompassing the notion of “combined”.
  • the "general plane” of the stage, or “horizontal plane” in this document is a plane which is perpendicular to these axes of rotation.
  • the clock movement comprises a single motor system 12 which is used both for setting the gear train 14 in rotation and for moving the mobile assembly 15.
  • the clock movement includes a motor system used to power the conventional gear train and a separate motor system to power the moving assembly.
  • the clockwork movement can comprise a single kinematic chain connecting the motor system 12 to the gear train which itself leads to the mobile assembly 15.
  • This clockwork movement can on the contrary comprise two distinct kinematic chains, one of them comprising the motor system and the conventional gear train, while the other kinematic chain starts from a separate motor system to lead to the moving assembly.
  • the timepiece movement comprises a single motor system 12 and a single kinematic chain.
  • the gear train of the movement ends in a motor unit 16 formed of a seconds pinion and whose function is to transmit the energy of the barrel 13 to the mobile assembly 15.
  • the clock movement comprises a fixed cam 17 with respect to the plate 11.
  • This cam 17 is formed of two parts.
  • a first part, called lower part 17a is close to the bottom of the case of the timepiece when the movement is placed in a watch case.
  • a second part, called upper part 17b is farther from the bottom of the box.
  • the cam, and more precisely at least one of the parts, for example the upper part 17b of this cam, comprises a cylindrical internal side surface 18 with a circular base. This circular internal side surface 18 could however be made on the lower part 17a of the cam or on the two parts 17a, 17b.
  • the two parts of the cam face each other so that they define between them a recess 19 of constant width.
  • One side of the recess forms a guide ramp 20.
  • This guide ramp 20 forms a left curve, that is to say that the surface of this ramp is not contained in a plane.
  • the curve defined by the guide ramp 20 of the cam 17 is formed by three identical sectors. As explained in more detail below, this makes it possible to maintain the mobile assembly 15 in a plane parallel to the general plane of the plate 11, without it being necessary to use, for example, guide columns.
  • the mobile assembly 15 comprises a first sub-assembly 15a which is linked to follower members 21 and which is called the guide sub-assembly.
  • the mobile assembly 15 further comprises a second sub-assembly 15b, called visible sub-assembly which is linked to the first sub-assembly 15a and which is in principle visible to the user when the clock movement is placed in a room. watchmaking.
  • the connection between these two subassemblies 15a, 15b can be of different natures.
  • the guide sub-assembly 15a of the mobile assembly 15 comprises two bridges 22 and the visible sub-assembly 15b of the mobile assembly 15 comprises a balance-spring assembly 23 having an axis of rotation held by the two bridges 22.
  • the first sub-assembly 15a of the mobile assembly 15 comprises arms 24 linked to a free rotation mechanism such as a ball bearing 34.
  • the second sub-assembly 15b comprises a decoration 25 and guide columns 26 whose the realization is detailed below.
  • the two sub-assemblies 15a, 15b can be integral with each other so that the movements in rotation and in translation of one cause the movements in rotation and in translation of the other.
  • a non-free rotation mechanism between the guide sub-assembly 15a and the visible sub-assembly 15b of the mobile assembly 15.
  • a non-free rotation mechanism may for example comprise one or more mobiles meshed with each other, at least one mobile being kinematically linked to the first sub-assembly 15a of the mobile assembly 15 and at least one other mobile being kinematically linked to the second sub-assembly 15b of the mobile assembly 15.
  • the mobiles can be dimensioned in such a way that the rotation in one direction of the first sub-assembly causes a rotation of the second sub-assembly at the same speed in the opposite direction. In this case, the second subassembly is immobile in rotation and moves only in translation.
  • the moving assembly 15 is a tourbillon-type regulating system.
  • the principle of the invention is however similar for other horological complications or for rotary decorations for example.
  • the mobile assembly 15 comprises an escapement pinion 33, a fixed wheel 27 and a drive member 28.
  • the fixed wheel 27 comprises a hub 36.
  • the drive member 28 comprises an arm 30 and a pin 37 visible in particular on the figure 5 .
  • the mobile assembly 15 is driven in rotation on its axis thanks to the escapement pinion 33 and to the fixed wheel 27.
  • the drive member 28 is driven in rotation by the gear train.
  • the pin and the arm 30 are mounted in such a way that on the one hand the pin can slide longitudinally in a cage drive pivot 38 integral with the mobile assembly 15, and that on the other hand, the body of drive 28 always drives the cage drive pivot 38, regardless of the vertical position of the movable assembly 15.
  • the arm 30 and the pin form a connection between the guide sub-assembly 15a and the visible sub-assembly 15b of the moving assembly 15.
  • the mobile assembly 15 and more precisely the guide sub-assembly 15a comprises three follower members 21 separated each other at an angle of 120°.
  • each of these follower members 21 comprises at least two rollers 31a, 31b arranged close to one another.
  • One of the rollers 31a pivots around a vertical axis, that is to say that the roller has a "tread” arranged in a plane parallel to the general plane of the plate or horizontal plane.
  • This roller 31a is arranged to be in contact with the side surface 18 of the cam 17, and more precisely with the cylindrical surface of this cam in the illustrated embodiment.
  • the second roller 31b of the follower member 21 pivots about a horizontal axis directed approximately towards the center of a circle formed by the cylindrical side surface 18 of the cam.
  • This roller 31b has a dimension such that it can move on the guide ramp 20, in the recess 19 formed between the upper part 17b and the lower part 17a of the cam 17.
  • the three follower members 21 are positioned in such a way that the rollers 31a moving along the side surface 18 of the cam 17 are all three always in contact with this side surface, so as to center the mobile assembly 15 with respect to cam 17.
  • rollers 31b moving on the guide ramp 20 are spaced apart by 120° relative to each other, combined with the fact that the curve defined by the guide ramp is formed by three identical sections ensures that the three rollers 31b are always at the same distance from the general plane of the plate 11 or at the same “height”. This ensures that the mobile assembly 15 moves in a plane which remains perpendicular to its longitudinal axis of movement or parallel to the general plane of the plate. This makes it possible to avoid the use of guide columns, which could cause friction or prevent the movement of the mobile assembly 15.
  • the follower members remain in coplanar positions with respect to each other when the guide ramp 20 is formed of identical sections, separated from each other by a constant angle, when the number of follower members is equal to a multiple of number of sections of the guide ramp and when these follower members are also separated by a constant angle from each other.
  • the number of sections is equal to three
  • the number of follower members is equal to three
  • the angle which separates these elements from each other is equal to 120°. It is for example possible to provide a ramp formed of four identical sections separated by 90° from each other and of four follower members separated by 90° from each other. It is for example also possible to provide a ramp formed of eight identical sections separated by 45° from each other and of four follower members separated by 90° from each other.
  • the curve formed by the guide ramp 20 is left ensures that the visible sub-assembly 15b of the mobile assembly 15 moves while approaching and moving away from the bottom of the box.
  • a very large freedom of movement is possible. It is for example possible that the movement in one direction is not symmetrical with respect to the movement in the other direction, the "direction" having here the meaning of moving away or approaching the movable assembly 15 with respect to the plate. .
  • the movement in the direction of the glass of the timepiece takes place at a relatively slow speed while the movement in the opposite direction takes place faster. This can be done by adapting the slope of the cam 17 or the guide ramp 20.
  • the clock movement according to the invention comprises an escapement wheel 32 integral with the escapement pinion 33.
  • This escapement pinion 33 meshes with the fixed wheel 27, which moves according to a vertical movement.
  • the escapement pinion 33 undergoing a vertical movement, but having to mesh with the fixed wheel 27 whatever the position of the movable assembly 15, the escapement pinion 33 has a height such that the condition of meshing with the wheel fixed 27 is always satisfied.
  • the particular shape of the escapement pinion 33 is particularly visible on the figure 3 and 6 .
  • the number of sections of the guide ramp 20 and the number of follower members 21 should advantageously be such that the mobile assembly remains in a plane parallel to the general plane of the plate.
  • the shape of certain sprockets or teeth should be adapted to support movement in planes of variable inclination. Although more complex, such an adaptation is feasible in practice.
  • the cam 17 is fixed while the movable assembly 15 rotates around a vertical axis of rotation.
  • the moving assembly or more precisely the second sub-assembly 15b of this moving assembly can move only in a longitudinal direction with respect to the axes of rotation of the moving parts of the movement of the timepiece. , without rotation.
  • This embodiment is illustrated by the figures 8 and 9 .
  • Such an embodiment can be interesting in the case where a part of the moving assembly must not rotate, which could be the case for a complication displaying information intended for use.
  • a complication could for example be a power reserve or the phases of the moon.
  • the follower members are similar to the follower members 21 of the embodiment illustrated by the figures 1 to 7 .
  • the visible sub-assembly 15b of the mobile assembly 15 is linked to at least one mobile column 26 in a housing linked to a fixed element of the timepiece movement, for example the plate 11 or a base 35.
  • two or even four columns may be provided to ensure effective guidance and prevent rotation of the movable element.
  • a connecting member is provided between the decor 25 and the follower members 21.
  • This connecting member may for example comprise a bearing of the ball bearing type 34 or any other similar component allowing free rotation of one of the elements relative to the other.
  • the outer ring of the bearing is secured to the follower members 21.
  • the inner ring of this ball bearing is secured to the columns 26.
  • the rotation of the decor 25 or of the second sub-assembly 15b of the moving assembly is however prevented by the presence of the columns 26 which prevent any rotation.
  • These columns being secured to the inner ring, the longitudinal displacement of the latter causes the longitudinal displacement of the columns.
  • the cam is fixed relative to the plate of the watch and the follower members rotate around an axis along the cam.
  • cam it is possible to provide for the cam to be mobile in rotation relative to the plate while the follower members move only in translation.
  • the cam can be fixed to the drive member 28 and the mobile assembly 15 can be guided by columns fixed to the plate.
  • the shape of the cam, and more precisely the shape of the guide ramp and the arrangement of the follower members are preferably such that all the positions that the movable element can reach are coplanar.
  • cam and the mobile assembly are both be mobile in rotation. To obtain the desired effect, it is important that one of the elements moves in rotation relative to the other, that is to say that the two elements do not rotate at the same speed in the same direction of rotation. spin.
  • the mobile assembly is guided by guide assemblies each formed of two rollers.
  • One of the rollers has the function of providing guidance in a longitudinal direction, along a vertical axis.
  • the other roller of each guide assembly has the function of ensuring that this vertical axis remains stationary and concentric with the circle defined by the side wall of the cam. It is possible to replace these two rollers with a single one, possibly adapting the shape of the ramp.
  • the ramp could have a profile in longitudinal section, presenting two different heights, the side wall connecting the two zones of different height playing the role of the side wall in the preceding examples. It is clear that other forms could be envisaged.
  • cam to manage the movement of the mobile element offers great flexibility as to the configuration of this movement.
  • Such a cam can be adapted in a relatively simple manner to a large number of mobile elements and in particular watchmaking complications. In this way, a wide variety of complications can be integrated as a module into the movement of the timepiece and set in motion in an unusual direction for the user, thus creating a surprising, aesthetic and innovative effect.
  • the cam used in a movement according to the invention has been described as having a circular profile, seen from above.
  • Other shapes could be envisaged, such as for example an equilateral triangle having rounded vertices.
  • the movable element could have a displacement along a longitudinal axis, but the longitudinal axis could itself undergo a displacement along a determined curve.
  • a mobile decor or more generally a mobile set with a fixed element for example to create an aesthetic effect. It is thus possible to display information or a graphic element in windows or to create a moiré effect for example.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
EP21182846.2A 2021-06-30 2021-06-30 Uhrwerk und uhr, die ein solches uhrwerk umfasst Pending EP4113216A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP21182846.2A EP4113216A1 (de) 2021-06-30 2021-06-30 Uhrwerk und uhr, die ein solches uhrwerk umfasst

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21182846.2A EP4113216A1 (de) 2021-06-30 2021-06-30 Uhrwerk und uhr, die ein solches uhrwerk umfasst

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EP4113216A1 true EP4113216A1 (de) 2023-01-04

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EP21182846.2A Pending EP4113216A1 (de) 2021-06-30 2021-06-30 Uhrwerk und uhr, die ein solches uhrwerk umfasst

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1460493A2 (de) 2003-03-19 2004-09-22 Franck Muller-Watchland SA Uhr mit Tourbillon
US20150277381A1 (en) * 2012-10-15 2015-10-01 Complitime Sa Timepiece
CH710863A2 (fr) * 2015-03-09 2016-09-15 Seiko Instr Inc Mécanisme de stabilisation de la fréquence, mouvement et pièce d'horlogerie mécanique.
EP3543797B1 (de) * 2018-03-20 2021-01-06 TEC Ebauches SA Uhrwerk, das ein regulierungssystem umfasst, und ein solches uhrwerk umfassende uhr

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1460493A2 (de) 2003-03-19 2004-09-22 Franck Muller-Watchland SA Uhr mit Tourbillon
US20150277381A1 (en) * 2012-10-15 2015-10-01 Complitime Sa Timepiece
CH710863A2 (fr) * 2015-03-09 2016-09-15 Seiko Instr Inc Mécanisme de stabilisation de la fréquence, mouvement et pièce d'horlogerie mécanique.
EP3543797B1 (de) * 2018-03-20 2021-01-06 TEC Ebauches SA Uhrwerk, das ein regulierungssystem umfasst, und ein solches uhrwerk umfassende uhr

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