Abstract: A horological assembly for a horological regulating member, including a balance spring (25) having a coiled flexible strip (2); a device for adjusting its rigidity which includes a flexible element (5) arranged in series with the strip and connecting one end (4) of said strip to a rigid support (17), the flexible element having a rigidity greater than that of the strip. The adjustment device includes a pre-stressing device (6) for applying a variable force or torque to the flexible element to vary the rigidity of the flexible element. A stud-holder (1) is configured to suspend the balance spring and includes a main body (30) connected to the flexible element, and a secondary body (33) connected to the pre-stressing device, the secondary body (33) being movable relative to the main body (30) and being connected to the main body by a flexure bearing (20).

Abstract: A stud-holder for a regulating member (150) of a horological movement, the regulating member (150) including an inertial mass, for example a balance (41), a balance spring (44) including a strip wound about itself in several turns, and a balance cock (42), the stud-holder (120) including a main body (2) intended to be mounted on the balance cock (42), and a secondary body (3) arranged at a distance from the main body (2) and configured to suspend the balance spring (44), the regulating member (150) including a flexible element (5) connecting the main body (2) to the secondary body (3), the stud-holder (120) including prestressing device (6) for applying a variable force or torque to the flexible element (5) in order to adjust the rate and/or isochronism slope of the regulating member (150).

Abstract: An assembly of a horological movement, which assembly includes a first timepiece component (22), for example a plate extending in a first plane, and a second timepiece component (30), for example an actuator of an actuation system, the assembly (1) including means (40) for assembling the first timepiece component (22) to the second timepiece component (30), wherein the assembly means (40) comprise means (50) for positioning the second component (30) on the first component (22) in a plane substantially parallel to the first component (22), and means (60) for bearing on the second component (30) to lock the second component (30) on the first component (22).

Abstract: A balance spring for a watch resonator mechanism, the balance spring (100) including a flexible strip (2) wound on itself in a plurality of coils, the strip (2) having a predefined stiffness, the balance spring (100) including means for adjusting its stiffness, including a flexible element (5) arranged in series with the strip (2), the flexible element (5) connecting one end (4) of the strip (2) to a fixed mount (38), so as to add additional stiffness to the continuation of the strip (2), the flexible element (5) preferably having a stiffness greater than that of the strip (2), the flexible element (5) including two flexible parts (15, 16) each connecting the strip (2) to the fixed mount (38), the two flexible parts (15, 16) being arranged relative to each other with axial symmetry along an axis (A) preferably passing substantially through the centre (0) of the balance spring.

Abstract: A spiral spring for a watch resonator mechanism, including a flexible strip (2) wound on itself and having a predefined stiffness and including an arrangement for adjusting its stiffness, including a flexible element (5) arranged in series with the strip, the flexible element (5) connecting one end (4) of the strip to a rigid support (11), to add additional stiffness to the strip (2). The flexible element (5) preferably having a stiffness greater than that of the strip (2). A prestressing device (6) applies a variable force or torque to the flexible element to vary its stiffness, and includes a lever (14) connected to the flexible element and actuatable to transmit the force or the torque to the flexible element, the lever (14) having an end (15) movable in a first direction (D1). A retaining device (25) prevents movement of the lever (14) substantially in a second direction (D2).

Abstract: A horological resonator mechanism, including a structure carrying, via a flexible suspension, an anchor unit from which is suspended an inertial element oscillating about a pivot axis extending in a first direction Z, in a first degree of rotational freedom RZ, under the effect of the return forces of a flexure pivot including longitudinal elastic strips, each fixed to the inertial element and to the anchor unit, the flexible suspension allowing the anchor unit to move in five degrees of freedom, this resonator is a composite assembly made of at least two different materials, on the one hand for the flexure pivot, and on the other hand for the flexible suspension.

Abstract: An actuation system (20) for a horological movement, configured to displace, at least in part, a part between a plurality of positions, the actuation system (20) including a micromechanical actuator (30) intended to be engaged with said part, the micromechanical actuator (30) including a part (33) intended to be mounted such that it remains stationary, for example with respect to a plate of the horological movement, and a part (37) that is movable with respect to the stationary part (33), the actuator (30) including a spring part (35) connecting the movable part (37) to the stationary part (33), the spring part (35) carrying the movable part (37), the actuation system further including setting means cooperating with the actuator (30) so as to be able to displace the movable part (37) of the actuator (30) between a plurality of positions, the spring part (35) including a guide with flexible blades.

Abstract: A regulating member (1) for a horological movement, including an inertial mass, for example a balance (23), a balance spring (25) including a ribbon (2) wound in a plurality of coils, the regulating member including an actuation system for adjusting the rate of the regulating member (1), the actuation system including an actuator (30) mechanically connected to the balance spring (25), the displacement of the actuator making it possible to modify the rate of the regulating member, the actuator (30) including a hook (39) engaged with the balance spring (25), and the displacement of the actuator (30) making it possible to modify the stiffness of the balance spring (25).

Abstract: A regulating member (1) for a horological movement, including an inertial mass, for example a balance (23), a balance spring (25) including a wound ribbon (2) and an adjustor for adjusting the stiffness of the balance spring provided with a flexible element (5) arranged in series with the wound ribbon (2), the adjustor including a prestressing device (6) for applying a variable force or torque to the flexible element (5) in order to adjust the rate of the regulating member (1), the regulating member (1) including a system for actuating the prestressing device (6), the actuation system including an actuator (30) mechanically connected to the prestressing device (6), the actuator (30) being configured to perform, at least in part, a substantially linear, preferably rectilinear, displacement, in order to actuate the prestressing device.

Abstract: A regulating member (1) for a horological movement, including an inertial mass, for example a balance (23), a balance spring (25) including a wound ribbon (2), and an adjustor for adjusting the stiffness of the balance spring, the regulating member (1) including a system for actuating the adjustor, the actuation system including an actuator (30) having a movable part (37) mechanically connected to the adjustor, and a regulator for regulating the actuator (30), the regulator having a pivoting control lever (45) with a pivot arm (69) and a support arm (71) cooperating with the movable part (37) of the actuator (30) in order to displace it mechanically.

Abstract: A flexible guide for a rotating resonator mechanism, in particular of a horological movement, the guide including a fixed support, an element that is capable of moving relative to the fixed support, at least one main flexible blade allowing the movable element to move relative to the fixed support by bending the one or more main flexible blades via a rotary motion about a centre of rotation, the flexible guide being arranged substantially in one plane, and includes at least one translation table joined to one end of the main flexible blade, the main flexible blade and the translation table forming a pair connected to the fixed support, to the movable element, or to an intermediate movable part, such that the translation table is configured to move in translation at least in part under the effect of the bending of the main flexible blade.

Abstract: The invention relates to a rotary resonator mechanism (1) comprising an oscillating mass (2), a flexible guide comprising at least two flexible blades (4) connecting a stationary support (3) to the oscillating mass (2), the resonator mechanism (1) extending substantially in the same plane to allow the oscillating mass to perform a rotary movement around a virtual pivot, the flexible guide (1) extending along a main axis of symmetry (14), characterised in that the mechanism (1) comprises a translation table (5) arranged between the flexible guide and the oscillating mass (2), the translation table (5) being joined to the flexible blades (4) and/or to the oscillating mass (2). The invention also relates to a horological movement comprising such a resonator (1).

Abstract: A balance for a regulating member of a horological movement, the balance including, at least in part, a body that can be deformed as a function of temperature, the deformable body being arranged, at least in part, on the periphery of the balance, the balance being configured so as to be able to move about a centre of rotation, the balance including a device for adjusting the sensitivity of the deformable body to temperature change, the adjustment device being provided with a first inertial element arranged on the deformable body in order to be able to modify the moment of inertia thereof, the first inertial element being capable of moving relative to the deformable body into a plurality of positions, wherein the positions form a continuous set. A horological movement and a regulating member can include such a balance.

Abstract: A method of setting up a resonator mechanism for timepieces, including a structure and an anchoring block from which is suspended at least one inertial element subjected to return forces exerted by a flexible pivot including a plurality of resilient blades deformable essentially in a plane XY perpendicular to the first direction Z, the anchoring block being suspended from the structure by a flexible suspension, the method including measuring a reference oscillation frequency of the inertial element about the Z direction in the XY plane, measuring a secondary oscillation frequency of the inertial element, comparing the secondary oscillation frequency with the reference oscillation frequency, adapting flexible suspension or substituting flexible suspension with another flexible suspension.

Abstract: A flexible guide for a rotating resonator mechanism, in particular of a horological movement, the guide including a fixed support, an element that is capable of moving relative to the fixed support, at least two main flexible blades allowing the movable element to move relative to the fixed support by bending the main flexible blades via a rotary motion about a centre of rotation, the flexible guide being arranged substantially in one plane, the flexible guide including at least two translation tables, each joined to one end of a main flexible blade, such that each translation table is configured to move in translation at least in part under the effect of the bending of the corresponding main flexible blade, the flexible guide including at least one tertiary flexible blade connecting the two translation tables.

Abstract: A balance wheel (15) for a clockwork resonator mechanism (1), including a main arm (6) arranged along a longitudinal axis, the balance wheel (15) including at least a first lateral weight (11) for adjusting the inertia of the balance wheel, the first lateral weight (11) being mounted so as to be able to move on the main arm (6) of the balance wheel (15) so as to be able to adopt a plurality of positions more or less close to the main arm (6) in order to adjust the inertia of the balance wheel (15). Also, a method for developing the resonator mechanism.

Abstract: A piezoelectric resonator, in particular for a rotary piezoelectric motor, the resonator including a stationary base and an oscillating mass extending about a longitudinal axis, the oscillating mass being provided with at least one inertia-block, preferably two opposing inertia-blocks, wherein the resonator includes a flexible blade guide connecting the oscillating mass to the base, so that the oscillating mass can be oscillated about a centre of rotation in a pendulum movement, the flexible guide including at least one first flexible blade connected to the base and/or to the oscillating mass to allow the displacement of the oscillating mass relative to the base, the flexible blade guide including a spiral spring connected to the base and/or to the oscillating mass, the spiral spring including at least partially an electrically actuatable piezoelectric material to deform the spiral spring and oscillate the oscillating mass.

Abstract: A piezoelectric resonator, in particular for a rotary piezoelectric motor, the resonator including a stationary base and an oscillating mass extending around a longitudinal axis, the oscillating mass being provided with at least one flyweight, preferably two opposing flyweights, wherein the resonator includes a flexible guide connecting the oscillating mass to the base, so as to be able to cause the oscillating mass to oscillate about a centre of rotation in a pendulum movement, the flexible guide comprising at least a first flexible blade connecting the base to the oscillating mass, the first flexible blade comprising at least in part an electrically actuatable piezoelectric material for deforming the first flexible blade and causing the oscillating mass to oscillate.

Abstract: A piezoelectric resonator for a rotary motor, the resonator including a stationary base and an oscillating mass extending around a longitudinal axis, the oscillating mass having an inertia-block. The resonator includes a flexible blade guide connecting the oscillating mass to the base, so as to be able to cause the oscillating mass to oscillate about a centre of rotation in a balance movement, the flexible guide including a first RCC-type pivot provided with an intermediate moving element, a first pair of flexible blades connecting the base to the intermediate moving element, and a second pair of flexible blades forming a second RCC-type pivot connecting the intermediate moving element to the oscillating mass, the piezoelectric resonator including a first flexible blade connecting the intermediate moving element to the base, the first flexible blade including at least in part a piezoelectric material that can deform the first flexible blade and cause the oscillating mass to oscillate.

Abstract: A rotary piezoelectric motor, in particular for a timepiece, the motor including: a rotor configured to rotate and actuate a mechanical device, a stator configured to rotate the rotor, the stator including a piezoelectric actuator, the piezoelectric actuator including a moving element whose movement causes the rotor to rotate in a first direction, the piezoelectric actuator including only two electrically actuatable resonators, the two resonators being connected to the moving element to move it against the rotor to cause it to rotate, the two resonators being arranged relative to the moving element so as to cause the moving element to oscillate in first and second directions different from each other, each resonator including a centre of rotation, the two resonators being disposed relative to the moving element so that, around each centre of rotation, the torque resulting from all the acceleration forces being applied in the plane of each resonator is zero.