EP3430479B1 - Dispositif pour pièce d'horlogerie, mouvement horloger et pièce d'horlogerie comprenant un tel dispositif - Google Patents

Dispositif pour pièce d'horlogerie, mouvement horloger et pièce d'horlogerie comprenant un tel dispositif Download PDF

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Publication number
EP3430479B1
EP3430479B1 EP17710000.5A EP17710000A EP3430479B1 EP 3430479 B1 EP3430479 B1 EP 3430479B1 EP 17710000 A EP17710000 A EP 17710000A EP 3430479 B1 EP3430479 B1 EP 3430479B1
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EP
European Patent Office
Prior art keywords
elastic
support
frequency adjustment
balancing
frequency
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.)
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EP17710000.5A
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German (de)
English (en)
French (fr)
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EP3430479A1 (fr
Inventor
Guy Semon
Wout Johannes Benjamin Ypma
Sybren Lennard Weeke
Nima Tolou
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LVMH Swiss Manufactures SA
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LVMH Swiss Manufactures SA
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Priority claimed from FR1652134A external-priority patent/FR3048792B1/fr
Application filed by LVMH Swiss Manufactures SA filed Critical LVMH Swiss Manufactures SA
Publication of EP3430479A1 publication Critical patent/EP3430479A1/fr
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Publication of EP3430479B1 publication Critical patent/EP3430479B1/fr
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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
    • G04B17/32—Component parts or constructional details, e.g. collet, stud, virole or piton
    • 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
    • G04B18/00—Mechanisms for setting frequency
    • G04B18/02—Regulator or adjustment devices; Indexing devices, e.g. raquettes
    • 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
    • G04B15/00—Escapements
    • G04B15/06—Free escapements
    • 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
    • G04B17/04—Oscillators acting by spring tension
    • G04B17/045—Oscillators acting by spring tension with oscillating blade springs

Definitions

  • the present invention relates to devices for timepieces, as well as to watch movements and to timepieces comprising such devices.
  • the known devices of this type have the drawback that the manufacturing tolerances induce dispersions in the oscillation frequency f, and therefore in the temporal precision of the device.
  • the object of the present invention is in particular to overcome this drawback
  • the invention relates to a device according to claim 1 attached.
  • the invention also relates to a watch movement comprising the device as defined above and said energy distribution member.
  • the invention also relates to a timepiece comprising a movement as defined above.
  • the anchor 11 and the regulator 12 form a monolithic mechanism 13, as will be explained below.
  • Watch movement 3 will now be explained in more detail using the figure 3 , which represents a particular case where the mechanism 13 (apart from the screw locking device described below) is a system monolithic formed in the same plate 14 (usually flat) and the moving parts of which are designed to move essentially in a mean plane of said plate 14.
  • the plate 14 may be of small thickness, for example about 0.05 to about 1 mm, depending on the nature of the material of the plate 14.
  • the plate 14 may have transverse dimensions, in the XY plane of the plate (in particular width and length, or diameter), of between approximately 10 mm and 40 mm.
  • X and Y are two perpendicular axes defining the plane of plate 14.
  • the plate 14 can be made of any suitable rigid material, preferably having a low Young's modulus to exhibit good elasticity properties and a low oscillation frequency. Examples of materials that can be used to make the plate 14 include silicon, nickel, iron / nickel alloy, steel, titanium. In the case of silicon, the thickness of the plate 14 can for example be between 0.2 and 0.6 mm.
  • the various members formed in the plate 14 are obtained by making openings in the plate 14, obtained by any manufacturing process used in micromechanics, in particular the processes used for manufacturing MEMS.
  • the wafer can be locally hollowed out, for example by deep reactive ion etching (DRIE - "Deep Reactive Ion Etching”) or possibly by laser cutting for small series.
  • DRIE deep reactive ion etching
  • the plate could in particular be produced by the LIGA process, or by laser cutting.
  • the plate 14 can be hollowed out, for example by wire spark erosion (WEDM).
  • WEDM wire spark erosion
  • the constituent parts of the mechanism will now be described in more detail.
  • Some of these parts are rigid and others (in particular those called “elastic branches”) are elastically deformable, essentially in bending.
  • the difference between the rigid parts and the elastic parts is their stiffness in the XY plane of the plate 14, which is due to their shape and in particular to their slenderness.
  • the slenderness can be measured in particular by the slenderness ratio (length / width ratio of the part concerned).
  • the rigid parts have a stiffness at least about 100 times greater in the XY plane than the elastic parts.
  • Typical dimensions for elastic links for example the elastic legs which will be described hereinafter, include lengths of for example between 5 and 13 mm and widths of for example between 0.01 mm (10 ⁇ m) and 0.04 mm (40 ⁇ m), especially about 0.025 mm (25 ⁇ m).
  • the aspect ratio of these beams in longitudinal section is between 5 and 60. The largest possible aspect ratio is to be preferred to limit the modes. oscillation out of plane.
  • the plate 14 forms a fixed external frame 15 which is fixed to a support plate 14a, for example by screws or the like (not shown) passing through holes 15a of the frame 15.
  • the support plate 14a is secured to the housing 2 of the timepiece 1.
  • the frame 15 can at least partially surround the energy distribution member 10, the anchor 11 and the regulator 12.
  • the energy distribution member 10 can be an escape wheel mounted to rotate, for example on the support plate 14a, so as to be able to rotate about an axis of rotation Z0 perpendicular to the XY plane of the plate 14. L the energy distribution member 10 is requested by the energy storage device 8 in a single direction of rotation 16.
  • the energy distribution member 10 has external teeth 17.
  • the anchor 11 is a rigid part which may comprise a rigid body 18 extending for example parallel to the X axis and two parallel rigid side arms 19, 20 extending for example parallel to the Y axis on both sides. 'other of the energy distribution member 10.
  • the arms 19, 20 respectively comprise two stop members 21, 22 in the form of fingers projecting towards each other in the direction of the axis X to from arms 19, 20.
  • the anchor 11 is elastically connected to the frame 15, so as to be able to move parallel to the axis X, in a direction of translation 02.
  • the anchor 11 can be connected to the frame 15 by an elastic suspension, comprising by example two elastic branches 23 substantially parallel to the Y axis.
  • the elastic branches 23 can be connected to the body 18 and arranged on either side of the lateral arms 19, 20, framing these lateral arms.
  • the anchor 11 may further include a rigid arm 24 extending along the Y axis towards the regulator 12, opposite the arm 20.
  • the anchor 11 may further include a monostable elastic member 11a, which may be in the form of an elastic tongue, the free end of which bears on the teeth 17 of the energy distribution member 10.
  • the monostable elastic member 11a can be connected to the rigid arm 19 of the anchor 11, for example by an elastic suspension comprising two parallel elastic branches 11b extending along the axis Y from the free end of the rigid arm 19, by extending the rigid arm 19 to a rigid support 11c which carries the monostable elastic member 11a.
  • the monostable elastic member 11a can extend along the Y axis in the direction of the regulator 12, from the rigid support 11c.
  • the monostable elastic member 11a is used for the energy distribution member 10 to transfer a precisely determined mechanical energy to the regulator, at each operating cycle of the watch movement 3, as explained in European patent application No. 14197015 ( EP3032350 ).
  • the balancing member 25 can also be inside the frame 15 and can be connected to the frame 15 by an elastic suspension, comprising for example two elastic branches 27 substantially parallel to the Y axis and symmetrical with the elastic branches 23 of anchor 11.
  • the elastic branches 23 can be connected to the body 26 of the balancing member 25.
  • the anchor 11 and the balancing member 25 are each mounted on the frame 15 to oscillate in circular translation, with an amplitude of oscillation in the direction of translation 02 and a secondary amplitude of oscillation, non-zero, perpendicularly. to the second direction of translation.
  • Said oscillation amplitude in the direction of translation 02 is greater than the secondary oscillation amplitude of the anchor and the balancing member, for example at least 10 times greater than the secondary oscillation amplitude anchor and the balancing member.
  • the balancing member 25 can advantageously have a mass substantially identical to that of the anchor 11, for example between 90% and 110% of the mass of the anchor 11.
  • the mass of the balancing member is very close to that of the anchor but is not necessarily identical to take into account the fact that the stresses applied to one or the other of these members are not completely symmetrical (for example the anchor is in contact with the energy distribution member when the balancing member is not).
  • the regulator 12 is a mechanical oscillator comprising first and second regulating members 29, 30 each forming a rigid inertial mass, each connected to the frame 15 by an elastic suspension which is adapted so that the first and second regulating members 29, 30 oscillate according to l 'axis Y, in a direction of translation O1.
  • the elastic suspension is formed by the set of elastic links 31; 36, 55 which connect (directly or indirectly) the first and second regulating members 29, 30 to the frame 15.
  • This elastic suspension has a certain overall stiffness, on which depends the oscillation frequency f of the first and second regulating members 29, 30.
  • the elastic suspension of the first and second regulating members 29, 30 may for example comprise two elastic branches 31 for each regulating member 29, 30, extending substantially along the X axis and connected to the frame 15.
  • Each of the first and second regulating members 29, 30 is therefore mounted on the frame 15 to oscillate in circular translation, with a first oscillation amplitude in the translation direction O1 and with a secondary, non-zero oscillation amplitude, perpendicular to the direction of translation O1.
  • Said oscillation amplitude in the translation direction O1 is greater than the secondary oscillation amplitude of the first and second regulating members, for example at least 10 times greater than the secondary oscillation amplitude.
  • the first and second regulating members 29, 30 may each have the shape of a C, with a main body 32 extending along the Y axis between two side arms 33 extending towards the inside of the frame. 15.
  • the aforementioned elastic branches 31 can advantageously be connected to the free ends of the lateral arms 33, which makes it possible to have elastic branches 31 which are long and therefore particularly flexible.
  • the first and second regulating members 29, 30 may be two parts symmetrical with respect to the aforementioned axis of symmetry Y0, of identical or substantially identical mass. They can define between them a free central space 34.
  • the first and second regulating members 29, 30 can be connected respectively to the anchor 11 and to the balancing member 25, for example by elastic drive branches 36.
  • the first regulating member 29 controls the movements of the anchor 11 and the second regulating member 30 control the movements of the balancing member 25.
  • the elastic drive branches 36 can for example extend substantially along the X axis.
  • the elastic drive branches 36 can in particular be connected respectively to the free ends of the rigid arm 24 of the anchor and of the rigid arm 28 of the anchor. 'balancing organ.
  • each of the first and second regulating members 29, 30 may include a notch 35 open along the X axis between the main body 32 and the rigid arm 33 closest to the anchor 11 or to the balancing member 25, and the corresponding elastic drive branch 36 can be connected to the main body 32 at the bottom of said notch 35, which makes it possible to lengthen the elastic drive branches 36 and therefore increase their flexibility.
  • a rigid balancing lever 37 mounted to pivot about a central center of rotation P.
  • the balancing lever 37 may optionally have a substantially M-shaped shape, with a central V-shaped portion 38 diverging from the center of rotation P and two lateral arms 39.
  • the lateral arms 39 can be respectively connected to the first and second regulating members 29, 30, for example by two elastic branches 40 extending substantially along the Y axis.
  • the balancing lever 37 can be mounted, by an elastic suspension 43, on a rigid support 40a rigidly connected to the frame 15.
  • the rigid support 40a can for example include an arm 41 extending on the axis of symmetry Y0, since the frame 15 up to a head 42 which can for example extend along the X axis by giving the support 40 a T-shape.
  • the balancing lever 37 requires the first and second regulating members 29, 30 to move symmetrically and opposite in the direction of translation O1, which, through the elastic drive branches 36, requires the anchor 11 and the balancing member 25 to move symmetrically and opposite in the direction of translation 02, as shown in figures 4 and 5 which show the two end positions of the mechanism 13.
  • the mechanism 13 further comprises a frequency adjustment device comprising a frequency adjustment member 53, which makes it possible to perform a fine adjustment of the oscillation frequency of the regulator 12, in particular during the assembly of the movement 3.
  • the member frequency adjustment 53 can for example be formed integrally in the plate 14 with the other elements of the aforementioned mechanism 13.
  • the frequency adjustment member 53 is connected, directly or indirectly, to at least one of the adjustment members 29, 30 by a so-called adjustment elastic link 36, 55.
  • the frequency adjustment member 53 is furthermore adjustable in position relative to the support plate 14a and to the frame 15 so as to be able to deform the elastic adjustment link 36, 55 and thus apply an adjustable elastic stress on the regulating member in question, so as to influence the stiffness overall of the elastic suspension of the regulator 12, and therefore on the above-mentioned frequency f.
  • the frequency adjustment member 53 can for example be connected to the frame 15 by two elastic branches 54 extending along the Y axis.
  • the second elastic part 55 can comprise at least one U-shaped part, or be constituted by a U.
  • the elastic connection 55 can comprise two branches substantially parallel to the Y axis which are connected together at one end. close to the frame 15, and the free ends of which are respectively connected to the frequency adjustment member 53 and to the balancing member 25.
  • the frequency adjustment member 53 is mounted to move relative to the frame 15 and to the support plate 14a, at least parallel to the X axis, for example by virtue of the aforementioned elastic branches 54.
  • the frequency adjustment member 53 comprises a locking device 56 suitable for locking the frequency adjustment member 53 relative to the support plate 14a, and therefore relative to the frame 15.
  • the locking device can include for example a screw 56 screwed into the support plate 14a around an axis 58.
  • the frequency adjustment member 53 can be connected to the support plate 14a by an eccentric connection, which can for example comprise an eccentric cam 56c in the form of a disc, through which the rod 56b of the screw 56 passes, while the head 56a of screw 56 comes to rest on said eccentric cam 56c to lock it.
  • the eccentric cam 56c is centered on an axis 57 offset from the axis 58 of the screw 56.
  • the adjustment member 53 and the frame 15 comprise facing indexes 60, 61 adapted to visually assess the position of the adjustment member 53 relative to the frame 15.
  • the frame 15 comprises a boss 59 comprising a rectilinear edge provided with several indexes facing the frequency adjustment member 53, and the frequency adjustment member 53 comprises a point 61 or the like facing the indexes 60 .
  • the eccentric cam 56c is in the position where the frequency adjustment member 53 is closest to the anchor 11 and does not impose an elastic preload on the balancing member 25.
  • the frequency f of the regulator 12 is then maximum.
  • the first and second regulating members 29, 30 oscillate in the direction of translation O1 between the two extreme positions shown respectively on the figures 4 and 5 , with a frequency f which may for example be between 20 and 30 Hz.
  • the second regulating member 30 passes from the extreme "low” position of the figure 4 at the extreme "high” position of the figure 5 , due to the presence of the balancing lever 37.
  • the anchor 11 moves from the extreme "left” position of the figure 4 to the extreme "right” position of the figure 3 when the first and second regulating organs pass into the neutral position of the figure 3 , then anchor 11 sets off again to the left 5 to the extreme "left” position of the figure 5 , where the energy distribution member 10 escapes again and rotates with one step under the stress of the energy storage device 8.
  • the balancing member 25 follows a movement symmetrical and opposite to anchor 11.
  • the anchor 11 and the balancing member 25 therefore oscillate with a frequency 2f in the direction of translation 02.
  • the frequency adjustment member 53 When it is necessary to fine-tune the frequency f of the regulator, for example during the initial assembly of movement 3 or after maintenance, an operator can loosen the screw 56 and adjust the position of the frequency adjuster. 53, manually or by automated means, until the exact desired frequency is obtained (measured by conventional means, in particular optical), possibly by being guided with the indexes 60, 61. In the position of the figure 6 , the frequency adjustment member 53 is in its extreme position furthest from the anchor 11 (that is to say the position furthest to the right on the figure 6 ), so that the second elastic part 55 imposes a stress to the right on the balancing member 25, thus modifying the oscillation frequency f of the system.
  • the anchor 11 and the regulator 12 form a monolithic mechanism 13, formed in the same plate 14 (usually flat) and the moving parts of which are designed to move essentially in a mean plane of said plate 14.
  • the explanations relating to the plate 14 data with regard to the first embodiment remain valid in the second embodiment.
  • the plate 14 comprises a support 15 which is secured to a support plate 14a, for example by screws or the like (not shown) passing through holes 15a of the support 15.
  • the support plate 14a is secured to the housing 2 of the part d 'watchmaking 1.
  • the energy distribution member 10 can be an escape wheel mounted to rotate, for example on the support plate 14a, so as to be able to rotate about an axis of rotation Z1 perpendicular to the XY plane of the plate 14. L
  • the energy distribution member 10 is requested by the energy storage device 8 in a single direction of rotation 16.
  • the energy distribution member 10 has external teeth 17.
  • the regulating member 118 of the regulator 12 is connected to the support 15 by an elastic suspension 119 connecting said regulating member to the support. More specifically, said regulating member 118 may have substantially an axial symmetry of order n with respect to a central axis Z'0 orthogonal to the mean plane XY and fixed with respect to the support 15. By “has substantially an axial symmetry of order n ", It is understood that the regulating member 118 is essentially shaped according to this symmetry, but that certain parts of relatively negligible mass may not present this symmetry (for example parts serving for the coupling of the anchor with the member. regulating).
  • Said regulating member 118 comprises a number n of rigid portions interconnected in pairs by n elastic coupling links, n being an integer at least equal to 2.
  • the elastic suspension 119 comprises n elastic suspension links respectively connecting each rigid portion of the regulating member to the support 15.
  • the elastic suspension can be provided so that the regulating member 118 is movable substantially in rotation about the central axis Z'0.
  • the number n is advantageously equal to 3; it may however be equal to 2 or more than 3.
  • each rigid portion of the regulating member 118 is connected to two adjacent rigid portions of the regulating member respectively by two elastic coupling links.
  • the regulating member 118 of the regulator 12 may have a generally annular shape centered on the central axis Z'0 and comprises 3 rigid portions 120 interconnected in pairs by 3 elastic coupling links 121.
  • the elastic suspension 119 which connects the regulating member 118 of the regulator 12 to the support 15, comprises 3 elastic suspension links 122 respectively connecting each rigid portion 120 to the support 15 so that each rigid portion 120 is movable according to at least one rotational movement. around the central axis Z'0, the regulating member 118 having a substantially rotational overall movement around the central axis Z'0.
  • Each elastic suspension link 122 advantageously comprises at least one elastic branch 123, for example an elastic branch 123.
  • Each elastic branch 123 may optionally include a rigid section 123a, for example towards the center of said elastic branch 123.
  • the rigid portions 120 of the regulating member are movable both in rotation and in radial translation with respect to the central axis Z'0.
  • the support 15 may optionally have a substantially star shape, with three branches 15b connected by a central part 15c close to the axis Z'0.
  • the rigid portions 120 of the regulating member 118 may each include a portion 124 in the form of an arc of a circle centered on the central axis Z'0.
  • the parts 124 in the form of a circular arc are adjacent to each other and together form a discontinuous ring centered on the central axis Z'0.
  • Each elastic branch 123 can extend substantially radially with respect to the central axis Z'0 and connect the part 124 in the form of an arc of a circle of one of the rigid portions 120, to the aforementioned central part 15c of the support 15.
  • the circular arc-shaped portions 124 each extend angularly between a first end 125 and a second end 126 which overlap each other in an angular direction.
  • each first end 125 may form a first finger 125a extending toward the adjacent rigid portion 120 and each second end 126 may form a second finger 126a extending toward the adjacent rigid portion 120, each first finger 125a overlapping toward the end. 'outside the second finger 126a of the adjacent rigid portion 120.
  • each part 124 in the form of an arc of a circle can be extended substantially radially inwards by a rigid arm 127 terminated by a spout 128 extending angularly beyond the second end, in the direction of the adjacent rigid portion 120.
  • Each elastic coupling link 121 can comprise at least one elastic coupling branch 121a (here 2 elastic coupling branches 121a parallel) extending substantially radially with respect to the central axis Z'0 and connecting the spout 128 of each rigid portion 120 at the first end 125 of the circular arc portion 124 of the adjacent rigid portion 120.
  • each rigid portion 120 of the regulating member can be limited by means for limiting movement relative to the support 15, in order to limit the displacements, in particular angular, of the rigid portions 120 and to protect the mechanism 13, in particular in the event of an impact or more. usually when it undergoes strong accelerations.
  • These movement limitation means can comprise a slot 129 formed in each part 124 in an arc of a circle and extending angularly around the central axis Z'0, and a pin 130 which is integral with the support 15 (in fact, fixed to the support plate 14a) and which is disposed in the slot 129.
  • the slots 129 are shaped according to the kinematics of the rigid portions 120 during the rotational movement of the regulating member 118.
  • the slots 129 are therefore not circular in shape centered on the central axis Z '0, but here rather in the form of sections of spirals.
  • the anchor 11 and the energy distribution member 10 can be placed inside the regulating member 118.
  • the anchor 11 is a rigid part which may include a rigid body 131 adjacent to the part 124 in the arc of a circle of one of the rigid portions 120 of the regulating member.
  • the anchor 11 may further include a rigid drive arm 132 which is integral with the rigid body 131 and which extends towards one of the branches 15b of the support from said rigid body 131.
  • the anchor 11 is elastically connected to the support 15, so as to be able to oscillate, for example according to a substantially rotational movement about an axis Z2 perpendicular to the XY plane.
  • the oscillations of the anchor 11 are controlled by the regulating member 118.
  • the rigid arm 127 of one of the rigid portions 120 of the regulating member can be extended inwards by an additional rigid arm 133, the free end of which is connected to the free end of the rigid arm of drive 132 by an elastic drive branch 134.
  • the anchor 11 can be connected to the support 15 by an elastic suspension, comprising for example two elastic anchor suspension branches 135 converging substantially towards the axis Z2.
  • the elastic branches 135 can connect the rigid body 131 to the free end 15d of one of the branches 15b of the support.
  • the anchor 11 comprises two stop members 136, 137 in the form of lugs projecting substantially towards the axis Z1, which are adapted to cooperate with the energy distribution member 10.
  • the anchor 11 is thus controlled by said regulating member 118 to regularly and alternately block and release the energy distribution member 10 by means of the stop members 136, 137, so that said distribution member energy 10 moves step by step in the direction 16 under the stress of the energy storage device 8 in a repetitive motion cycle, and said anchor 11 is further adapted to transfer mechanical energy to the regulating member 118 during this repetitive movement cycle, in a manner known per se.
  • the total mass of the oscillating parts of the mechanism can be approximately 0.33 g and their inertia approximately 20.19 10 -9 kg.m 2 , the frequency of oscillation of the regulating member. 118 is about 18 Hz and the rotational stiffness of the mechanism is about 2.58 10 -4 Nm / rad.
  • Such a mechanism exhibits very good isochronism, which leads to very good temporal precision.
  • the mechanism 13 further comprises a frequency adjustment device making it possible to adjust the aforementioned frequency f.
  • This frequency adjustment device comprises a rigid frequency adjustment member 153, which makes it possible to perform a fine adjustment of the oscillation frequency of the regulator 12, in particular during the assembly of the movement 3.
  • the frequency adjustment member 153 can for example be formed integrally in the plate 14 with the other elements of the aforementioned mechanism 13.
  • the frequency adjustment member 153 is connected, directly or indirectly, to at least one of the portions rigid 120 of the regulating member 118 by a so-called adjusting elastic link 155.
  • the frequency adjustment member 153 is also adjustable in position with respect to the support plate 14a and to the support 15 so as to be able to deform the link elastic adjustment 155 and thus apply an adjustable elastic stress on the adjusting member 118, so as to influence the overall stiffness of the elastic suspension of the regulator 12, and therefore on the above-mentioned frequency f.
  • the frequency adjustment member 153 may have an elongated shape extending between a first end 153a and a second end 153b.
  • the frequency adjustment member 153 can be placed inside the adjustment member 118, for example between one of the branches 15b of the support 15 and one of the rigid arms 127 mentioned above.
  • the second end 153b may optionally be in the form of a fork or include a passage hole for an adjusting screw 156.
  • the second end 153b may optionally be placed opposite a notched portion 15e of the adjacent branch 15b of the support.
  • the frequency adjustment member 153 can for example be connected to one of the branches 15b of the support 15 by two elastic branches 154.
  • the elastic branches 154 can converge towards the first end 153a, which thus defines a pivot axis Z3 of the frequency regulator 153 (perpendicular to the aforementioned XY plane).
  • the notched portion 15e of the branch 15b adjacent to the frequency adjustment member 153 may advantageously have an edge 15f which is substantially circular and centered on the pivot axis Z3, which may optionally be substantially in contact with the second end 153b of the frequency adjuster 153 and thus help guide the frequency adjuster 153 when it is adjusted in position.
  • the notched part 15e of the branch 15b in question may possibly include indexes 60 as described in the first embodiment.
  • the frequency adjustment member 153 comprises a lever arm 153c which extends the first end 153a opposite the second end 153b.
  • This lever arm 153c can extend at an angle relative to the main body of the frequency adjuster 153 (i.e. the part between the first and second ends 153a, 153b), for example example an angle of about 90 degrees.
  • the lever arm 153c is advantageously shorter than the main body of the frequency adjustment member 153, for example 3 to 6 times shorter, which allows a movement of the first end 153a to induce a relatively smaller movement. of the free end of the lever arm 153c.
  • the elastic adjustment link 155 can connect the free end of the lever arm 153c to the adjusting member 118, for example to the free end of the rigid arm 127 adjacent to the frequency adjustment member 153.
  • this elastic adjustment link 155 may include three elastic branches 155a, 155b, 155c, comprising a first elastic branch 155a starting from the free end of the lever arm 153c and extending to a first elbow. , the second elastic branch 155b extending from the first elbow to a second elbow and the third elastic branch 155c extending from the third elbow to the free end of the aforementioned rigid arm 127.
  • the frequency adjustment member 153 can be adjusted by pivoting its second end 153b around the pivot axis Z3 and then held in position by the aforementioned adjustment screw 156.
  • the adjustment screw 156 may for example pass through a slot 161 in the form of an arc of a circle formed in the support plate 14a. This slot can have a substantially circular arc shape centered on the pivot axis Z3.
  • the adjustment screw 156 can for example be screwed into a nut (not shown) arranged under the support plate 14a.
  • the adjustment and maintenance in position of the frequency adjustment member 153 could be done by any other means such as an eccentric connection or the like.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Springs (AREA)
  • Vibration Prevention Devices (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
EP17710000.5A 2016-03-14 2017-03-13 Dispositif pour pièce d'horlogerie, mouvement horloger et pièce d'horlogerie comprenant un tel dispositif Active EP3430479B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1652134A FR3048792B1 (fr) 2016-03-14 2016-03-14 Dispositif pour piece d'horlogerie, mouvement horloger et piece d'horlogerie comprenant un tel dispositif
PCT/EP2017/055876 WO2017157870A1 (fr) 2016-03-14 2017-03-13 Dispositif pour pièce d'horlogerie, mouvement horloger et pièce d'horlogerie comprenant un tel dispositif

Publications (2)

Publication Number Publication Date
EP3430479A1 EP3430479A1 (fr) 2019-01-23
EP3430479B1 true EP3430479B1 (fr) 2021-05-19

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EP17710000.5A Active EP3430479B1 (fr) 2016-03-14 2017-03-13 Dispositif pour pièce d'horlogerie, mouvement horloger et pièce d'horlogerie comprenant un tel dispositif

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Country Link
US (1) US11029649B2 (zh)
EP (1) EP3430479B1 (zh)
JP (1) JP7012657B2 (zh)
CN (1) CN109690424B (zh)
WO (1) WO2017157870A1 (zh)

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Publication number Priority date Publication date Assignee Title
EP3627242B1 (fr) 2018-09-19 2021-07-21 The Swatch Group Research and Development Ltd Mecanisme d'echappement d'horlogerie magneto-mecanique optimise
EP3722888B1 (en) * 2019-04-09 2023-05-17 Ecole Polytechnique Fédérale de Lausanne (EPFL) Mechanical oscillator with tunable isochronism defect
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EP3430479A1 (fr) 2019-01-23
US11029649B2 (en) 2021-06-08
CN109690424A (zh) 2019-04-26
JP7012657B2 (ja) 2022-01-28
CN109690424B (zh) 2021-07-16
US20200333746A1 (en) 2020-10-22
JP2019508701A (ja) 2019-03-28
WO2017157870A1 (fr) 2017-09-21

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