EP3671363A1 - 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
EP3671363A1
EP3671363A1 EP18213726.5A EP18213726A EP3671363A1 EP 3671363 A1 EP3671363 A1 EP 3671363A1 EP 18213726 A EP18213726 A EP 18213726A EP 3671363 A1 EP3671363 A1 EP 3671363A1
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EP
European Patent Office
Prior art keywords
assembly
axis
rotation
wheel
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.)
Granted
Application number
EP18213726.5A
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English (en)
French (fr)
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EP3671363B1 (de
Inventor
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
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Tec Ebauches SA
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Publication date
Application filed by Tec Ebauches SA filed Critical Tec Ebauches SA
Priority to EP18213726.5A priority Critical patent/EP3671363B1/de
Publication of EP3671363A1 publication Critical patent/EP3671363A1/de
Application granted granted Critical
Publication of EP3671363B1 publication Critical patent/EP3671363B1/de
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    • 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 a timepiece movement intended to be placed in a case of a timepiece, this movement comprising an energy source, a gear train, a regulation mechanism supplied by said energy source via of the train, and a plate supporting the regulation mechanism, this regulation mechanism comprising a balance-spring and an escapement.
  • the present invention also relates to a timepiece comprising such a timepiece movement.
  • Clock movements comprising at least one regulating mechanism of the tourbillon or carousel type have been known for a long time.
  • These regulatory mechanisms have been developed with the aim of improving the isochronism of the movement of the timepiece by making this movement less sensitive to its position. More particularly, the regulation mechanism has the effect of moving the balance over time, so as to make it take different positions.
  • the average of isochronism faults as a function of the position of the balance is in principle closer to zero than isochronism faults in a particular position of the movement.
  • tourbillon or carousel type regulatory mechanisms were developed for pocket watches which are generally held in vertical positions. Such regulatory mechanisms are less relevant for watches of the wristwatch type, for which position changes often, depending on the movements of the wearer of the watch.
  • each tourbillon includes a balance wheel, the position of the axes of the balance wheels being fixed during the operation of the tourbillon.
  • the regulating mechanism is a vortex, in the sense that it comprises a fixed cage.
  • the realizations of these multi-axis tourbillons imply the use of a large number of parts, which has the effect of increasing the complexity of the realization, increasing the size and the mass and consequently, decreasing the efficiency of the timepiece movement.
  • the present invention proposes to produce a timepiece movement in which a balance-spring is movable in a large number of positions and of different orientations, remaining as light as possible so that this movement has as low energy consumption as possible.
  • the object of the invention is also achieved by a timepiece comprising such a movement.
  • the geometry of the displacement of the pendulum axis it is possible to choose the geometry of the displacement of the pendulum axis.
  • One end of the pendulum axis can move along a three-dimensional curve forming a more or less open torus, or even according to a sphere, which is a special case of a torus.
  • the balance axis can take a large number of different positions and the correction of the isochronism of the timepiece no longer depends on the position thereof.
  • the regulation mechanism can be integrated into a wristwatch so that this mechanism is visible. By its particularly original functioning, it brings to the watch a completely remarkable aesthetic aspect.
  • the timepiece movement according to the present invention is intended to be placed in a case (not shown) of a timepiece such as in particular a watch of the wristwatch type.
  • a timepiece such as in particular a watch of the wristwatch type.
  • Such a timepiece conventionally comprises a plate supporting in particular a motor system having a power source, and a cog formed of gears driven in rotation by the motor system.
  • the plate further supports a regulation mechanism 10 which is the subject of Figures 1 to 11 and which is described in detail below.
  • the energy source can in particular be formed by one or more barrels comprising a barrel spring.
  • the engine system rotates the cog of the clockwork movement. This cog can be conventional, it is not detailed here.
  • the components of the engine system and of the gear train are linked to the plate and are fixed in the planes in which they can rotate.
  • the general plane formed by the plate is called horizontal plane.
  • the axes, in in particular the axes of rotation of the toothed wheels arranged in planes parallel to the horizontal plane, are called vertical axes.
  • the regulating mechanism 10 notably comprises a pendulum 11 pivoting about a pendulum axis 12 and an escapement 13.
  • the regulating mechanism 10 can be separated into three assemblies which interact so as to move the pendulum axis 12 in three distinct directions, the combination of displacements in these three directions resulting in the displacement of one end of the pendulum axis in a torus, which can also be a sphere.
  • the three sets of the regulation mechanism 10 are linked in such a way that the third set is linked to the second set and interacts with the first set and the first set carries the second set.
  • Each of these assemblies can pivot around an axis, certain axes of the three assemblies being orthogonal two by two, in the illustrated embodiment.
  • the first assembly 14 is illustrated at least partially by the figures 1 to 4 and 11 .
  • the figure 1 represents the first assembly as it is mounted in a timepiece movement according to the invention.
  • the figures 2 and 3 represent a first part of this first set alone.
  • the first assembly 14 is formed of two parts, a first part 15 being illustrated by the figures 2 and 3 and a second part 16 being illustrated by the figure 4 .
  • the first part 15 of the first assembly 14 comprises in particular a cage 17, a mechanism 18 for rotating the cage, a toothed wheel of the field wheel type 19 and a support for the second assembly 20.
  • the mechanism 18 for rotating the cage comprises a toothed wheel 21 secured to a rod 22.
  • the movement of the timepiece includes a train linked kinematically to an energy source.
  • This cog leads to the regulation mechanism 10 and transmits energy to this regulation mechanism.
  • the last component of the train before the regulating mechanism that is to say the component which supplies energy to this regulating mechanism, here called the actuating member 23 is visible on the figure 1 and comprises a pinion 24 and two toothed wheels, namely an upper toothed wheel 25 and a lower toothed wheel 26, arranged coaxially.
  • the pinion 24 and the two toothed wheels 25, 26 are integral with each other, so that the rotation of the pinion 24 causes the rotation of the two toothed wheels.
  • the movement-setting member 23 comprises an axis of rotation perpendicular to the general plane of the plate in which the movement of the timepiece is mounted.
  • the energy from the energy source is transmitted by the gear train to the pinion 24 of the actuating member 23, which has the effect of rotating this pinion around its axis of rotation and which also causes the rotation of the two toothed wheels 25, 26 of this movement setting member.
  • the characteristics of the two toothed wheels of the actuating member namely the number of teeth and the diameters of the wheels, are different, so as to form a differential whose function is explained below.
  • the toothed wheel 21 of the first assembly 14 meshes with the lower toothed wheel 26 of the setting member 23.
  • the first set 14 comprises a pair of pivots 27 aligned with an axis of rotation of the rod 22 of the first set, one of the pivots being disposed near the toothed wheel 21 integral with the rod 22 and the other pivot being disposed at the opposite end of the cage 17. These two pivots 27 allow the first assembly 14 to rotate about an axis of rotation 28 defined by these two pivots 27.
  • the support 20 of the second set comprises a pair of bearings 29 arranged one opposite the other, so as to be able to receive an axis, as explained below.
  • a straight line 30 connecting these two bearings 29 is perpendicular to the axis 28 of the first set.
  • the field wheel 19 of the first set is integral with the cage 17. This field wheel 19 is arranged in a plane parallel to a plane containing the axis of rotation 28 of the first set. This field wheel 19 is fixed to the cage 17 and has an empty center, allowing the rotation of components inside this field wheel.
  • the second part 16 of the first set 14, illustrated by the figure 4 is formed by a carousel wheel 31.
  • This carousel wheel 31 is essentially formed by a toothed wheel of the field wheel type 32, a cylindrical tube 33 and a toothed wheel 34 with straight teeth.
  • the field wheel 32 and the toothed wheel 34 with straight teeth have coincident axes of symmetry, these two elements also being integral with the cylindrical tube 33.
  • the carousel wheel 31 is mounted on the rod 22 of the first part 15 of the first assembly 14 so as to be able to be supported by this rod and to be able to pivot around this rod with minimal friction.
  • a ball bearing is placed in the cylindrical tube 33 around the rod 22.
  • the second set 35 is illustrated by the figures 1 , 5 , 6 and 9 to 11 . It is illustrated in detail by the figure 5 .
  • This second assembly essentially comprises a frame 36 and an arm 37 arranged to hold one end of the balance pin 12.
  • the frame 36 is provided with a pair of aligned pivots 38, arranged to allow the frame 36 to pivot around. an axis 39 connecting these two pivots 38.
  • a toothed wheel 40 with straight teeth is secured to the frame 36, the function of this toothed wheel 40 being explained below.
  • the arm 37 of the chassis is provided with a bearing 41 cooperating with a bearing of the third assembly, described below. These two bearings are arranged to maintain the balance pin 12.
  • the regulating mechanism 10 includes an exhaust 13 illustrated in the form of a Potter exhaust. This exhaust is at least partially visible on the figures 6 and 10 . Regarding the part of the exhaust visible on the figure 6 and forming part of the second set, the exhaust 13 comprises a fixed escape wheel 42, having teeth arranged towards its center, these teeth cooperating with an anchor 43 visible on the figure 10 .
  • the escape wheel 42 is integral with the chassis. It is visible in particular on the figure 6 .
  • the second assembly further comprises a ball bearing 44 linked to the chassis and arranged to hold the third assembly on the second assembly, while allowing a rotary movement of this third assembly relative to the second assembly.
  • the third set 45 of the regulation mechanism 10 is visible on the figures 1 and 7 to 11 .
  • This third assembly essentially comprises a balance-spring assembly 11, a toothed wheel here called return wheel 47.
  • the ball bearing 44 makes it possible to maintain this third assembly 45 on the chassis 36 of the second assembly 35.
  • the balance-spring balance 11 is formed by a balance twill 49 and a spiral spring 48.
  • the arms 50 are not arranged in the plane of the serge 49.
  • the arms 50 are in fact fixed to the axis of pendulum 12 in a plane different from the plane of the serge 49.
  • the arms 50 and the serge 49 thus form a cavity or a bell-shaped zone.
  • the spiral spring 48 has a helical shape and is housed inside the bell-shaped cavity formed by the serge 49 and the arms 50 of the balance 11.
  • the spiral spring can have an outer casing of cylindrical, conical or spherical shape for example.
  • the third assembly 45 comprises a bearing 51 in which one end of the pendulum axis 12 is placed so as to be able to pivot.
  • the pendulum axis 12 is thus held in the bearing 51 of the third assembly 45 and is guided in the bearing 41 of the second assembly 35.
  • the return wheel 47 is arranged so as to be able to pivot about an axis of rotation 52 of the third assembly aligned with the balance axis 12.
  • the figure 9 illustrates the third set 45 of the regulation mechanism 10 mounted on the second set 35.
  • the connection between the second and the third set is made by means of ball bearing 44 which allows the rotation of the third set with respect to the second set.
  • the pendulum axis 12 is held on the one hand by the bearing 51 of the third set and on the other hand, it is guided by the bearing 41 of the arm 37 of the second set.
  • the figure 10 more particularly illustrates a possible embodiment of the escapement used in a timepiece movement according to the present invention.
  • this exhaust 13 is an exhaust known under the name Potter exhaust.
  • This exhaust 13 essentially comprises a double plate 53 provided with a dowel 54 secured to the balance pin 12, the anchor 43 and the escape wheel 42.
  • the escape wheel 42 is fixed relative to the chassis of the second assembly 35 and has teeth directed towards the center of this escape wheel 42.
  • the anchor 43 is supported by the third assembly 45 of the regulation mechanism and is movable on a circle centered on the balance axis 12.
  • This anchor 43 comprises two pallets 55 which cooperate alternately with the teeth of the escape wheel 42.
  • exhausts and / or other configurations can be used, in particular a configuration in which the escapement wheel is movable, the latter being driven in rotation for example by an internal toothed wheel secured to the chassis.
  • the figure 11 illustrates the three mounted assemblies, part of the first assembly 14, namely the carousel wheel, not being illustrated.
  • the pivots 38 of the chassis of the second set 35 are mounted on the bearings 29 of the first set 14 so as to allow the rotation of this second set 35 around the axis 39 or of the straight line 30 materialized by these pivots 38.
  • the wheel of return 47 of the third set 45 meshes with the field wheel 19 of the first set 14.
  • the axis of rotation 52 of the third assembly 45 can be aligned with the axis of rotation 28 of the first assembly 14.
  • a certain distance "d” separates these two axes, this distance depending in particular on the shape of the arm 37 of the second assembly 35.
  • the choice of the distance "d" between these two axes 52, 28 in particular makes it possible to determine the curve of the displacement of the balance axis 12.
  • the regulating mechanism 10 used in a movement according to the present invention operates in the following manner.
  • the first set 14 of the regulating mechanism 10 is held on the plate by means of the pivot 27 arranged on the side of the rod 22.
  • This first set 14 is also held by a bridge (not shown) by means of the pivot 27 arranged on the side of the cage 17.
  • the rod 22 of the first set supports the carousel wheel 31.
  • This first set 14 of the regulation mechanism also supports the second set 35 of the regulation mechanism by the fact that the pivots 38 of the chassis 36 of the second set are arranged in the bearings 29 of the first set.
  • the toothed wheel 40 of the second assembly 35 meshes with the field wheel 32 of the carousel wheel 31.
  • the moving member 23 When the moving member 23 receives energy from the energy source, this energy being transmitted by the train of movement of the timepiece.
  • the upper toothed wheel 25 of this moving member 23 drives the toothed wheel 34 of the carousel wheel 31.
  • the lower toothed wheel 26 of the moving member 23 drives the toothed wheel 21 of the setting mechanism 18 rotation of the cage 17.
  • the carousel wheel 31 of the first set 14 then pivots around the axis of rotation 28 of the first set at a first speed of rotation.
  • the second part 15 of the first set 14 and in particular the cage 17, also pivots around the axis of rotation 28 of the first set, at a second speed of rotation.
  • the engagement of the field wheel 31 of the first set 14 with the toothed wheel 40 of the second set 35 has the effect of generating the rotation of this second set 35 about the axis of rotation 39 defined by the two pivots 38 of this second set.
  • This rotation also has the effect of displacing the balance axis 12 in a plane perpendicular to the axis of rotation 39 of the second assembly 35.
  • the rotation of the toothed wheel 31 of the first set 14 of the regulation mechanism has the effect of moving the field wheel 19 of the first set around the axis of rotation 28 of this first set.
  • the return wheel 47 of the third set meshing with the field wheel 19 of the first set, the rotation of the cage 17 of the first set generates a rotation of the third set 45 around the axis of rotation 52 of the third set.
  • the upper toothed wheel 25 and the lower toothed wheel 26 of the actuating member 23 are integral.
  • the upper gear 25 meshes with the gear 34 of the carousel wheel 31.
  • the lower gear 26 meshes with the gear 21 of the mechanism 18 for rotating the cage 17 of the first assembly.
  • the field wheel 19 of the first part 15 of the first set 14 meshes with the return wheel 47 of the third set 45.
  • the toothed wheel 40 of the second set 35 meshes with the field wheel 32 of the carousel wheel 31.
  • the regulating mechanism 10 makes it possible to move the pendulum axis according to a chosen three-dimensional curve and makes it possible for this pendulum to take all kinds of positions. This represents an important improvement compared to a regulating mechanism of the traditional tourbillon type. Indeed, in a traditional tourbillon, the curve on which the pendulum axis moves is two-dimensional, which implies that the regulating system is only effective when the timepiece is in a precise position.
  • the regulatory mechanism of the invention can have a regulating effect whatever the position of the timepiece.
  • the movement of the regulating mechanism is also particular and gives the timepiece in which it is mounted, an original character.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Transmission Devices (AREA)
EP18213726.5A 2018-12-18 2018-12-18 Uhrwerk und uhr, die ein solches uhrwerk umfasst Active EP3671363B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18213726.5A EP3671363B1 (de) 2018-12-18 2018-12-18 Uhrwerk und uhr, die ein solches uhrwerk umfasst

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18213726.5A EP3671363B1 (de) 2018-12-18 2018-12-18 Uhrwerk und uhr, die ein solches uhrwerk umfasst

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EP3671363A1 true EP3671363A1 (de) 2020-06-24
EP3671363B1 EP3671363B1 (de) 2022-06-29

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113917820A (zh) * 2021-11-08 2022-01-11 得利时钟表（深圳）有限公司 一种可变换陀飞轮位置的手表机械机芯结构
EP4266131A1 (de) * 2022-04-22 2023-10-25 Blancpain SA Dreidimensionales karussell für uhrwerk

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1574916A2 (de) * 2004-03-09 2005-09-14 Franck Muller-Watchland SA Dreiachsiges Tourbillon für Uhren, insbesondere Armbanduhren
EP2407832A1 (de) * 2010-07-16 2012-01-18 Richemont International S.A. Uhrwerk einer Uhr
CH711774B1 (de) * 2011-05-23 2017-05-15 Bessem & Handl Sàrl Stellvorrichtung für ein Uhrwerk.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1574916A2 (de) * 2004-03-09 2005-09-14 Franck Muller-Watchland SA Dreiachsiges Tourbillon für Uhren, insbesondere Armbanduhren
EP2407832A1 (de) * 2010-07-16 2012-01-18 Richemont International S.A. Uhrwerk einer Uhr
CH711774B1 (de) * 2011-05-23 2017-05-15 Bessem & Handl Sàrl Stellvorrichtung für ein Uhrwerk.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113917820A (zh) * 2021-11-08 2022-01-11 得利时钟表（深圳）有限公司 一种可变换陀飞轮位置的手表机械机芯结构
CN113917820B (zh) * 2021-11-08 2022-09-20 得利时钟表（深圳）有限公司 一种可变换陀飞轮位置的手表机械机芯结构
EP4266131A1 (de) * 2022-04-22 2023-10-25 Blancpain SA Dreidimensionales karussell für uhrwerk

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