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
  • G04B17/04—Oscillators acting by spring tension
  • G04B17/045—Oscillators acting by spring tension with oscillating blade springs
• • 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
  • G04B15/14—Component parts or constructional details, e.g. construction of the lever or the escape wheel
• • 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
  • G04B15/08—Lever escapements

Definitions

• Device for a timepiece, a watch movement and a timepiece comprising such a device.
• the present invention relates to devices for timepieces, as well as to watch movements and timepieces comprising such devices.
• Timepiece devices comprising a plane-shaped mechanism extending in a mean plane, said mechanism comprising:
• an inertial regulating member connected to the support, by an elastic suspension, said regulating member having substantially an axial symmetry of order n with respect to a central axis orthogonal to said mean plane and fixed relative to the support, not being an integer at less than 2.
• WO2016091823A1 describes an example of such a device.
• the present invention is intended in particular to improve the devices of this type, in particular to improve their temporal accuracy.
• a device of the kind in question is characterized in that said regulating member comprises a number n of rigid portions interconnected in pairs by n coupling elastic links,
• the elastic suspension comprises n resilient suspension links respectively connecting each rigid portion to the support.
• the regulating member is movable substantially in rotation about said central axis
• the rigid portions of the regulating member are movable both in rotation and in radial translation relative to the central axis;
• the elastic suspension links each comprise at least one elastic branch
• n is at least equal to 3 and each rigid portion is connected to two adjacent rigid portions respectively by two elastic coupling bonds;
• the number is not equal to 3;
• the rigid portions each comprise a portion in the form of an arc of a circle centered on the central axis;
• the arcuate portions are adjacent to each other and together form a discontinuous ring
• the circular arcuate portions each extend angularly between a first end and a second end which overlap each other in the angular direction;
• each elastic coupling link comprising at least one elastic coupling branch extending substantially radially with respect to the central axis and connecting said spout of each rigid portion to the first end of the arcuate portion of an adjacent rigid portion ;
• each resilient suspension connection comprises at least one elastic suspension branch extending substantially radially inward from the corresponding rigid portion to said central portion of the support;
• the mechanism further comprises an anchor adapted to cooperate with an energy distribution member provided with teeth and intended to be solicited by an energy storage device, said anchor being controlled by said regulating member to regularly and alternately block and releasing the energy distribution member, so that said energy delivery member moves step by step under the stress of the energy storage device in a repetitive motion cycle, and said anchor being adapted to transfer energy the mechanical energy to said regulating organ during this cycle of repetitive motion;
• said anchor is connected to the support by two elastic anchor suspension branches and to one of the rigid portions of the regulating member by at least one elastic driving arm;
• the elastic anchor suspension legs are arranged so that said anchor is movable substantially in rotation about an additional axis of rotation parallel to said central axis;
• the anchor comprises a rigid main body which comprises two stop members adapted to cooperate with the teeth of the power distribution member, the main body of the anchor being disposed internally with respect to the shaped part.
• circular arc of one of the rigid portions and the anchor further comprising a rigid drive arm secured to the main body and connected to the rigid arm of said rigid portion by said elastic drive leg;
• the device comprises means of limitation of movement adapted to limit the deflections from to at least one rigid portion of the regulating member relative to the support;
• said movement limiting means limit an angular displacement of said at least one rigid portion of the regulating member relative to the support, about the central axis;
• said movement limiting means comprises a slot in said at least one rigid portion of the regulating member and extending angularly about the central axis, and a pin which is integral with the support and which is disposed in the slot;
• said movement limitation means comprise a rigid movement limitation arm belonging to said at least one rigid portion of the regulating member, and two complementary movement limiting members belonging to the support and radially flanking said movement limitation arm, said movement limiting arm extending angularly with respect to the central axis;
• the movement limitation arm comprises a free end provided with a radially enlarged head, said head being wider than the spacing between the two complementary movement limiting members belonging to the support;
• the enlarged head is angularly movable in an arcuate recess centered on the central axis, which is formed in the support, said recess opening out from said support by a narrowed opening delimited by two flanges belonging to said support and forming said limiting members; complementary movements;
• each rigid portion comprises a portion in the form of a circular arc centered on the central axis and a rigid arm extending from the portion in the form of an arc of a circle up to an inner end adjacent to the central axis
• each elastic suspension connection comprising an elastic suspension branch connecting the support to the inner end of the rigid arm and extending substantially radially relative to the central axis
• each elastic coupling link comprising at least one resilient coupling branch connecting the arc-shaped portion of a rigid portion to the first end of the rigid arm of an adjacent rigid portion, said resilient coupling leg extending substantially radially relative to the central axis.
• the invention also relates to a watch movement comprising the device as defined above and a power distribution member provided with teeth and intended to be biased by an energy storage device, said device comprising an anchor adapted to cooperate with the power distribution member, said anchor being controlled by said regulating member to regularly and alternately block and release the power distribution member, so that said power distribution member does not move stepping under the stress of the energy storage device according to a repetitive motion cycle, and said anchor being adapted to transfer mechanical energy to said regulating member during this cycle of repetitive motion.
• the invention also relates to a timepiece comprising a movement as defined above.
• FIG. 1 is a schematic view of a room timepiece which may comprise a mechanism according to one embodiment of the invention
• FIG. 2 is a block diagram of the movement of the timepiece of FIG. 1,
• FIG. 3 is a plan view of part of the movement of FIG. 2 according to a first embodiment of the invention, comprising the regulator, the anchor and the energy distribution member;
• FIGS. 4 and 5 are views similar to FIG. 3, showing two extreme positions of the mechanism
• FIGS. 6 to 8 are views similar to FIGS. 3 to 5, respectively, for a second embodiment of the invention
• Figures 9 and 10 are views similar to Figure 3, respectively for third and fourth embodiments of the invention.
• FIG. 1 represents a timepiece 1 such as a watch, comprising:
• a time indicator 7 comprising for example two needles 7a, 7b respectively for hours and minutes, arranged between the glass 6 and the dial 5 and actuated by the watch movement 3.
• the watch movement 3 can comprise, for example:
• a device 8 for storing mechanical energy generally a mainspring, a mechanical transmission 9 driven by the mechanical energy storage device 8,
• a power distribution member 10 for example an escape wheel
• an anchor 11 adapted to sequentially retain and release the energy delivery member 10
• a regulator 12 which is a mechanism comprising an oscillating inertial regulating member, controlling the anchor 11 to move it regularly so that the energy distribution member is moved step by step at constant time intervals.
• the anchor 11 and the regulator 12 form a mechanism 13.
• the mechanism 13 is advantageously a monolithic system formed in the same plate 14 (usually flat) and whose moving parts are designed to move essentially in an average plane of said plate 14.
• the plate 14 may be thin, 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), between about 10 mm and 40 mm.
• X and Y are two perpendicular axes defining the plane of the plate 14.
• the plate 14 may be made of any suitable rigid material, preferably having a low Young's modulus to exhibit good elasticity properties and a low oscillation frequency.
• suitable rigid material preferably having a low Young's modulus to exhibit good elasticity properties and a low oscillation frequency.
• materials usable for producing the plate 14 include silicon, nickel, iron / nickel alloy, steel, titanium.
• the thickness of the plate 14 may for example be between 0.2 and 0.6 mm.
• mechanism monolithic a mechanism composed of elements which, by the nature or the form of their assembly, are integral with each other to the point that any deformation of a component causes deformation of the other parts.
• the monolithic mechanism may advantageously be formed in a single piece of material, optionally treated to have an outer layer of a different nature from the rest of the material (for example an oxidized layer).
• the monolithic mechanism may also include some inserts (eg glued, welded or otherwise) in the plane of the plate.
• 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 the manufacture of MEMS.
• the plate can be locally hollowed out for example by deep reactive ion etching (DRIE) or possibly by laser cutting for small series.
• DRIE deep reactive ion etching
• the plate could be made in particular by the LIGA method, or by laser cutting.
• the plate 14 may be recessed for instance by electro ⁇ wire erosion (WEDM).
• WEDM electro ⁇ wire erosion
• the constituent parts of the mechanism will now be described in more detail.
• Some of these parts are rigid and others (especially those called “elastic branches") are elastically deformable, mainly in flexion.
• 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 ratio slenderness (length / width ratio of the concerned part).
• the rigid parts have a stiffness at least about 100 times higher in the XY plane than the elastic parts.
• Typical dimensions for the elastic links include lengths for example between 5 and 13 mm and widths for example between 0.01 mm (10 ⁇ ) and 0.04 mm (40 ⁇ ), in particular approximately 0.025 mm (25 ⁇ ).
• the slenderness ratio of these beams in longitudinal section is between 5 and 60. The largest slenderness ratio is preferred to limit the modes oscillation off plane.
• the plate 14 comprises a support 15, 115, 215, 315 which is secured to a support plate 14a, for example by screws or the like (not shown) passing through holes 15a, 115a, 215a, 315a of the support 15, 115, 215, 315.
• the support plate 14a is secured to the housing 2 of the timepiece 1.
• the energy distribution member 10 may be an escape wheel rotatably mounted for example on the support plate 14a, so as to be rotatable about an axis of rotation ZI perpendicular to the XY plane of the plate 14.
• L energy distribution member 10 is biased 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 of the regulator 12 is connected to the support 15, 115, 215, 315 by an elastic suspension connecting said regulating member to the support. More specifically, said regulating member 12 has substantially an axial symmetry of order n with respect to a central axis Z0 orthogonal to the mean plane XY and fixed with respect to the support 15, 115, 215, 315.
• substantially has an axial symmetry of order n is meant that the regulating member 12 is essentially shaped according to this symmetry, but that some parts of relatively negligible mass may not have this symmetry (eg parts for coupling the anchor with the regulating member).
• Said regulating member 12 comprises a number n of rigid portions interconnected in pairs by n elastic coupling bonds, not being an integer at least equal to 2.
• the elastic suspension comprises n resilient suspension connections respectively connecting each rigid portion of the regulating member to the support 15, 115, 215, 315.
• the elastic suspension may be provided for the regulating member 18; 118; 218; 318 is movable substantially in rotation about the central axis Z0.
• each rigid portion of the regulating member is connected to two adjacent rigid portions of the regulating member respectively by two elastic coupling links .
• the regulating member 18 of the regulator 12 may have a generally annular shape centered on the central axis Z0 and comprises 3 rigid portions 20 connected together in pairs by 3 elastic coupling links 21.
• the elastic suspension 19 which connects the regulating member 18 of the regulator 12 to the support 15, comprises 3 elastic suspension links 22 respectively connecting each rigid portion 20 to the support 15 so that each rigid portion 20 is movable in at least a rotational movement around the central axis Z0, the regulating member having a substantially global movement of rotation about the central axis Z0.
• Each elastic suspension connection 22 advantageously comprises at least one elastic branch 23, for example a resilient branch 23.
• Each elastic branch 23 may optionally comprise a rigid section 23a, for example towards the center of said elastic branch 23.
• the rigid portions 20 of the regulating member are movable both in rotation and in radial translation with respect to the central axis Z0.
• the support 15 may optionally have a substantially star-shaped shape, with three branches 15b connected by a central portion 15c.
• the rigid portions 20 of the regulating member 18 may each comprise a portion 24 in the shape of a circular arc centered on the central axis Z0.
• the arcuate portions 24 are adjacent to each other and together form a discontinuous ring centered on the central axis Z0.
• Each elastic branch 23 may extend substantially radially relative to the central axis Z0 and connect the arcuate portion 24 of one of the rigid portions 20 to the above-mentioned central portion 15c of the support 15.
• the arcuate portions 24 each extend angularly between a first end 25 and a second end 26 which overlap each other in the angular direction.
• each first end 25 may form a first finger 25a extending to the adjacent rigid portion 20 and each second end 26 can form a second finger 26a extending towards the adjacent rigid portion 20, each first finger 25a covering outwardly the second finger 26a of the adjacent rigid portion 20.
• each arcuate portion 24 may be extended substantially radially inward by a rigid arm 27 terminated by a spout 28 extending angularly beyond the second end towards the rigid portion 20 adjacent.
• Each elastic coupling connection 21 may comprise at least one elastic coupling branch 21a (here 2 parallel coupling elastic branches 21a) extending substantially radially with respect to the central axis Z0 and connecting the spout 28 of each rigid portion 20 to the first end 25 of the portion 24 in an arc of the adjacent rigid portion 20.
• each rigid portion 20 of the regulating member may be limited by movement limitation means relative to the support 15, to limit the angular displacements particularly angular portions 20 and protect the mechanism 13 especially in case of shock or more usually when he experiences strong acceleration.
• These movement limitation means may comprise a slot 29 formed in each arcuate portion 24 and extending angularly about the central axis Z0, and a pin 30 which is integral with the support 15 (in fact, fixed to the support plate 14a) and which is arranged in the slot 29.
• the slots 29 are shaped according to the kinematics of the rigid portions 20 during the rotational movement of the regulating member 18.
• the slots 29 are not circular in shape centered on the central axis Z0, but here rather in the form of sections of spirals.
• the abovementioned movement limitation means, or similar movement limitation means, could be provided in the other embodiments of the invention.
• the anchor 11 and the energy distribution member 10 may be disposed inside the regulating member 18.
• the anchor 11 is a rigid piece which may comprise a rigid body 31 adjacent the portion 24 in a circular arc of one of the rigid portions 20 of the regulating member.
• the anchor 11 may further comprise a rigid drive arm 32 which is integral with the rigid body 31 and which extends towards one of the branches 15c of the support from said rigid body 31.
• the anchor 11 is elastically connected to the support 15, so as to be able to oscillate, for example in 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 18.
• the rigid arm 27 of one of the rigid portions 20 of the regulating member may be extended inwardly by an additional rigid arm 33 whose free end is connected to the free end of the rigid arm drive 32 by an elastic drive leg 34.
• the anchor 11 can be connected to the support 15 by an elastic suspension, comprising for example two elastic anchor suspension branches 35 converging substantially towards the axis Z2.
• the elastic branches 35 can connect the rigid body 31 to the free end 15c of one of the branches 15b of the support.
• the anchor 11 comprises two stop members 36, 37 in the form of lugs projecting substantially towards the axis ZI, which are adapted to cooperate with the energy dispensing member 10.
• the anchor 11 is thus controlled by said member regulating to regularly and alternately block and release the power distribution member 10 by means of the stop members 36, 37, so that said power distribution member 10 moves stepwise in the direction 16 under the solicitation of the energy storage device 8 according to a repetitive motion cycle, and said anchor 11 is further adapted to transfer mechanical energy to the regulating member 18 during this repetitive motion cycle, so known in itself.
• the total mass of the oscillating parts of the mechanism may be about 0.33 g and their inertia of about 20.19 10 ⁇ 9 kg. m 2 , the oscillation frequency of the regulating member is about 18 Hz and the rotational stiffness of the mechanism is about 2.58 10 ⁇ 4 Nm / rad.
• Such a mechanism has a very good isochronism, which leads to a very good temporal accuracy.
• the regulating member 118 of the regulator 12 comprises three rigid portions 120 connected together in pairs. elastic coupling connections 121.
• the elastic suspension 119 which connects the regulating member 118 of the regulator 12 to the support 115 comprises three elastic suspension links 122 respectively connecting each rigid portion 120 to the support 115 so that each rigid portion 20 is movable in at least a rotational movement around the central axis Z0.
• Each elastic suspension connection 122 advantageously comprises at least one elastic branch 123, for example an elastic branch 123.
• Each elastic branch 123 may optionally comprise a rigid section 123a, for example towards the center of said elastic branch 123.
• the portions rigid 120 of the regulating member are movable both in rotation and in radial translation with respect to the central axis Z0.
• the support 115 may optionally have an annular shape surrounding the regulator 118, the energy distribution member 10 and the anchor 11.
• the rigid portions 120 of the regulating member 118 may each comprise a portion 124 in the shape of a circular arc centered on the central axis Z0.
• the arcuate portions 124 are here relatively spaced from each other in the circumferential direction.
• Each rigid portion 120 may further comprise a rigid arm 127 which extends substantially radially inwardly from the arcuate portion 124 to a central end 128 in the form of a bead.
• Each elastic branch 123 may extend substantially radially relative to the central axis Z0, between the central end 128 of one of the rigid parts 120 and the support 115, passing between two adjacent portions 124.
• Each elastic coupling connection 121 may comprise at least one elastic coupling branch 121a (here two parallel coupling elastic branches 121a) extending substantially radially with respect to the central axis Z0 and connecting the central end 128 of each rigid portion 20 to the portion 124 in an arc of a rigid portion 120 adjacent.
• the anchor 11 is a rigid piece which may comprise for example two integral branches 111a, 111b forming between them an angle, for example of the order of 90 degrees, the branch 111a here being extended beyond the branch 111b by a heel 111c.
• the anchor 11 is elastically connected to the support 115, so as to be able to oscillate, for example in a substantially rotational movement about a perpendicular axis Z2 in 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 may be connected for example to the branch 111a of the anchor by a resilient drive leg 134, possibly provided with a rigid central section 134a.
• the anchor 11 can be connected to the support 115 by an elastic suspension, comprising for example two elastic branches 135 of anchor suspension converging substantially to the axis Z2.
• the elastic branches 23 can connect the heel 111c of the anchor 11 to the support 115.
• the anchor 11 comprises two stop members 136, 137 in the form of lugs projecting substantially towards the axis ZI, which are adapted to cooperate with the energy dispensing member 10.
• the anchor 11 is thus controlled by said regulating member 118 to regularly and alternately block and release the energy dispensing member 10 by means of the stop members 136, 137, so that said dispensing member of energy 10 moves stepwise in the direction 16 under the stress of the energy storage device 8 according to 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 regulating member 218 of the regulator 12 may have a generally annular shape centered on the central axis Z0 and comprises 3 rigid portions 220 connected together in pairs by 3 coupling elastic links 221.
• the rigid portions 220 of the regulating member 218 may each comprise a portion 224 in the shape of a circular arc centered on the central axis Z0.
• the arcuate portions 224 are adjacent to each other and together form a discontinuous ring centered on the central axis Z0.
• the arcuate portions 224 each extend angularly between a first end 225 and a second end 226 which overlap one another in the angular direction.
• each second end 226 may extend angularly to the rigid portion 220 adjacent and radially inward, to a spout 228 covered outwardly by the first end 225 of the rigid portion 220 adjacent.
• Each elastic coupling connection 221 may comprise at least one elastic coupling branch 221a (here 2 parallel parallel coupling elastic branches 221a) extending substantially radially with respect to the central axis Z0 and connecting the spout 228 of each rigid portion 220 to the first end 225 of the portion 224 in an arc of the adjacent rigid portion 220.
• elastic coupling branch 221a here 2 parallel parallel coupling elastic branches 221a
• the support 215 is disposed in the center of the regulating member 218.
• the elastic suspension 219 which connects the regulating member 218 of the regulator 12 to the support 215 comprises three elastic suspension links 222 respectively connecting each rigid portion 220 to the support 215 so that each rigid portion 220 is movable in at least a rotational movement around the central axis Z0.
• Each elastic suspension connection 222 may for example connect the support 215 (for example an angle 215b of the support 215 when the support has a substantially triangular shape as in the example shown).
• Each suspension elastic link 222 can optionally comprise an intermediate rigid body 238 which comprises for example an arcuate portion 230 of concavity oriented towards the corresponding angle 215b of the support 215 and a rigid connecting arm 240 oriented substantially opposite said angle 215b.
• the arcuate portion 230 may be connected to said angle 215b for example by two elastic branches 241 converging towards the angle 215b.
• the rigid link arm 240 may be connected to the second end 226 of the part 224 in a corresponding circular arc, for example by two parallel elastic branches 242, which may optionally comprise rigid central sections 242a.
• the anchor 11 and the energy distribution member 10 may be arranged inside the regulating member 218, for example at least partially in a recess 215c formed in the support 215.
• the anchor 11 may be formed by a rigid arm 231 which extends parallel to one of the flexible branches 241 of one of the elastic links 222, from one end of the corresponding arcuate portion 239.
• the rigid arm 231 comprises two stop members 236, 237 in the form of lugs projecting substantially towards the axis ZI, which are adapted to cooperate with the energy dispensing member 10.
• the regulating member 318 of the regulator 12 may have a generally annular shape centered on the central axis Z0 and comprises 3 rigid portions 320 connected together in pairs by 3 coupling elastic links 321.
• the elastic suspension 319 which connects the regulating member 318 of the regulator 12 to the support 315, comprises 3 elastic suspension links 322 respectively connecting each rigid portion 320 to the support 315 so that each rigid portion 320 is movable in at least a rotational movement about the central axis Z0.
• Each resilient suspension connection 322 advantageously comprises at least one elastic branch 323, for example an elastic branch 323.
• Each elastic branch 323 may optionally comprise a rigid section 323a, for example towards the center of said elastic branch 323.
• the rigid portions 320 of the regulating member are movable both in rotation and in radial translation with respect to the central axis Z0.
• the support 315 may optionally have a substantially star-shaped shape, with three branches 315b connected by a central portion 315c.
• the rigid portions 320 of the regulating member 318 may each comprise a portion 324 in the shape of a circular arc centered on the central axis Z0.
• the arcuate portions 324 are adjacent to each other and together form a discontinuous ring centered on the central axis Z0.
• Each elastic branch 323 may extend substantially radially with respect to the central axis Z0 and connect the arcuate portion 324 of one of the rigid portions 320 to the aforementioned central portion 315c of the support 315.
• the arcuate portions 324 each extend angularly between a first end 325 and a second end 326.
• the second end 326 of each arcuate portion 324 may be extended substantially radially inwardly. by a rigid arm 327 terminated by a spout 328 extending angularly beyond the second end, in direction of the rigid portion 320 adjacent.
• Each elastic coupling connection 321 may comprise at least one elastic coupling branch 321a (here two parallel parallel coupling branches 321a) extending substantially radially with respect to the central axis Z0 and connecting the spout 328 of each rigid portion 20 to the first end 325 of the portion 324 in an arc of the adjacent rigid portion 320.
• the deflections of at least some rigid portions 320 of the regulating member may be limited by means of movement limitation with respect to the support 15, to limit the angular displacements especially of the rigid portions 320 and to protect the mechanism in particular in the event of impact or more generally when it undergoes strong accelerations.
• These movement limitation means may comprise a rigid movement limitation arm 329 belonging to at least one rigid portion 320 of the regulating member 318, and two complementary movement limiting members 330a belonging to the support 315 and radially flanking said arm of FIG. movement limitation 329, said motion limiting arm extending angularly with respect to the central axis Z0.
• the rigid motion limiting arm 329 can penetrate into a recess 330 formed in the support 315. Said recess 330 opens out of said support 315 in the XY plane by a narrowed opening delimited by two flanges belonging to said support and forming said limiting members of complementary movement 330a.
• each movement limitation arm 329 may comprise a free end provided with a radially expanded head 329b, said head 329b being disposed in the recess 330 and being wider than the spacing between the two limiting members of the invention.
• Each recess 330 may be shaped substantially in a circular arc centered on the central axis Z0, and each movement limitation arm may be shaped substantially in a circular arc centered on the central axis, or more advantageously in spiral portion in correspondence. with the kinematics of the rigid portions 320 of the regulating member 318.
• one of the branches 315c of the support 315 has a recess 315d which accommodates the energy distribution member 10 and the anchor 11, and each of the other two branches 315c has two recesses 330 opening at the end of the first stage. opposed to each other and respectively receiving two movement limiting arms 329 extending towards one another, belonging to one of the rigid portions 320.
• One of the rigid portions 320 may be devoid of arms limit of movement 329 but be coupled to the anchor 11 as will be explained below.
• one of the two movement limitation arms 329 of each rigid portion 320 may be integral with a support arm 329a extending radially inwardly from the arcuate portion 324 of this portion. rigid 320, in the vicinity of the first end 325 of said portion 324 in an arc.
• the other movement limitation arm 329 of the same rigid portion 320 may be integral with the aforementioned rigid arm 327.
• the anchor 11 is a rigid piece which may comprise a rigid body 331 adjacent to the portion 324 in the form of an arc of one of the rigid portions 320 of the regulating member (the member which does not have any movement limiting arms 329 in the example).
• the anchor 11 may further comprise a rigid drive arm 332 which is integral with the rigid body 331.
• the anchor 11 is elastically connected to the support 315, so as to be able to oscillate, for example in 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 318.
• the rigid arm 327 of the rigid portion 320 adjacent to the anchor 11 can be extended inwardly by an additional rigid arm 333 whose free end is connected to the free end of the rigid drive arm 332 by a resilient drive leg 334 (optionally provided with a rigid central section 334a).
• the anchor 11 can be connected to the support 315 by an elastic suspension, comprising, for example, two elastic anchor suspension legs 335 converging substantially towards the axis Z2.
• the anchor 11 comprises two stop members 336, 337 in the form of lugs projecting substantially towards the axis ZI, which are adapted to cooperate with the energy dispensing member 10.
• the anchor 11 is thus controlled by said regulating member 318 to regularly and alternately block and release the energy dispensing member 10 by means of the stop members 336, 337, so that said dispenser member energy 10 moves stepwise in the direction 16 under the stress of the energy storage device 8 according to a repetitive motion cycle, and said anchor 11 is further adapted to transfer mechanical energy to the regulating member 18 during this repetitive movement cycle, in a manner known per se.
• the anchor 11 may further comprise a monostable elastic member 341, which may be under the form of an elastic tongue whose free end comes to bear on the teeth 17 of the energy dispensing member 10.
• the monostable elastic member 341 can be connected to the rigid body 331 of the anchor 11, for example by an elastic suspension comprising two substantially parallel elastic branches 339 extending to a rigid support 340 which carries the monostable elastic member 341.
• the monostable elastic member 341 serves for the energy dispensing member 10 to transfer a mechanical energy precisely determined at the regulating member 318, at each cycle of operation of the watch movement 3, as explained in the document WO2016091951.

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• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Springs (AREA)
• Electric Clocks (AREA)
• Toys (AREA)
• Vibration Prevention Devices (AREA)
• Manipulator (AREA)

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• 2016
  • 2016-12-01 FR FR1661782A patent/FR3059792B1/fr active Active
• 2017
  • 2017-11-30 JP JP2019529590A patent/JP7058655B2/ja active Active
  • 2017-11-30 EP EP17805224.7A patent/EP3548973B1/fr active Active
  • 2017-11-30 WO PCT/EP2017/081087 patent/WO2018100122A1/fr not_active Ceased
  • 2017-11-30 CN CN201780083855.7A patent/CN110692022B/zh active Active
  • 2017-11-30 US US16/465,912 patent/US11934149B2/en active Active
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