In an oscillator for a timepiece including a balance and a hairspring, the balance lacks equilibrium, such that: the curves for running of the oscillator owing to weight of the hairspring as a function of the oscillation amplitude of the balance in at least four vertical positions of the oscillator spaced by 90° each pass through 0 at an oscillation amplitude of the balance between 200° and 240°; and between oscillation amplitudes of 150° and 280°, curves representing the running of the oscillator owing to lack of equilibrium in the balance as a function of the oscillation amplitude in the vertical positions each has an average slope of opposite sign to the average slope of the corresponding curve among the curves representing the running of the oscillator owing to the weight of the hairspring. A reduction in the running discrepancies between the vertical positions can thus be achieved.

In an oscillator for a timepiece including a balance and a hairspring, the balance lacks equilibrium, such that: the curves for running of the oscillator owing to weight of the hairspring as a function of the oscillation amplitude of the balance in at least four vertical positions of the oscillator spaced by 90° each pass through 0 at an oscillation amplitude of the balance between 200° and 240°; and between oscillation amplitudes of 150° and 280°, curves representing the running of the oscillator owing to lack of equilibrium in the balance as a function of the oscillation amplitude in the vertical positions each has an average slope of opposite sign to the average slope of the corresponding curve among the curves representing the running of the oscillator owing to the weight of the hairspring. A reduction in the running discrepancies between the vertical positions can thus be achieved.

A device for autonomous adjustment of the active length of a balance spring includes a regulator mounted on a plate with a cock, a balance spring stud holder being pivotally mounted on the cock, the regulator being pivotally mounted on the stud holder and including a pivot arm and device for changing the active length of the balance spring by pivoting the regulator. The device includes an elastic stress device to exert an elastic, return-to-position action on the regulator, and an inertia block, mounted for free rotation on the cock and connected to the pivot arm of the regulator, arranged to move the pivot arm of the regulator between a rest position and a correction position of the device, and simultaneously act on the device for changing the active length of the balance spring.

A device for autonomous adjustment of the active length of a balance spring includes a regulator mounted on a plate with a cock, a balance spring stud holder being pivotally mounted on the cock, the regulator being pivotally mounted on the stud holder and including a pivot arm and device for changing the active length of the balance spring by pivoting the regulator. The device includes an elastic stress device to exert an elastic, return-to-position action on the regulator, and an inertia block, mounted for free rotation on the cock and connected to the pivot arm of the regulator, arranged to move the pivot arm of the regulator between a rest position and a correction position of the device, and simultaneously act on the device for changing the active length of the balance spring.

Disclosed is a tourbillon for a horology movement including a cage rotatably mounted on the horology movement, the cage bearing a regulating organ including a balance including a balance pivot pivotally mounted in balance bearings about a balance axis with an anchor including an anchor pivot pivotally mounted in anchor bearings about an anchor axis and arranged to cooperate both with the regulating organ and also with an escapement wheel including an escapement pivot pivotally mounted in escapement bearings about an escapement axis. The anchor and the escapement wheel are positioned relative to the balance so the distance between the anchor axis and the balance axis and the distance between the escapement axis and the balance axis are greater than the outer radius of the balance. Also disclosed is a movement including such a tourbillon as well as to a timepiece including such a movement.

A timepiece resonator mechanism (100), including a structure (1) carrying, by a flexible suspension (300), an anchoring block (30) from which is suspended an inertial element (2) oscillating about a pivot axis (D) extending in a first direction Z, according to a first rotational degree of freedom RZ, under the action of return forces of a flexible pivot (200) including elastic longitudinal strips (3) each fixed to said inertial element (2) and to said anchoring block (30), the resonator mechanism including a viscous substance (10) arranged at least partly around the flexible suspension (300), the viscous substance (10) being configured to at least partly dissipate the energy due to a shock.

A timepiece resonator mechanism (100), including a structure (1) carrying, by a flexible suspension (300), an anchoring block (30) from which is suspended an inertial element (2) oscillating about a pivot axis (D) extending in a first direction Z, according to a first rotational degree of freedom RZ, under the action of return forces of a flexible pivot (200) including elastic longitudinal strips (3) each fixed to said inertial element (2) and to said anchoring block (30), the resonator mechanism including a viscous substance (10) arranged at least partly around the flexible suspension (300), the viscous substance (10) being configured to at least partly dissipate the energy due to a shock.

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).

A timepiece movement with a regulating member which is a tourbillon or carousel, also known as a karussel, and including a drive mechanism, with a pivoting arm subjected to the restoring torque of a first energy source and carrying a mechanism comprising a wheel, a second energy source that subjects to a restoring torque a third wheel set on which the wheel rolls, under the action of the first energy source, the structure carries stop means cooperating with complementary stop means of the third wheel set to hold the latter in position, which are uncouple-able under the action of uncoupling control means of the arm at the end of the forward angular travel of the arm to allow the third wheel set to pivot in a single direction under the action of the second energy source, causing a backward rotation of the arm to the start of its angular travel.

A watch has a mechanical movement with a force control mechanism arranged in a going train of the mechanical movement between an energy source and an escape wheel set connected to an oscillating oscillator to drive the escape wheel set always in the same direction of rotation. The escape wheel set meshes with a seconds wheel. A rotating locking element is arranged to cooperate with a stop member connected to this seconds wheel in order to lock this going train in a stop mode or to release this going train in a jump mode depending on the angular position of this seconds wheel. A flexure bearing with elastic strips is attached on the one hand to the seconds wheel and on the other hand to the movement support. The pre-wound flexure bearing is arranged to drive in rotation the seconds wheel and the escapement mechanism connected to the oscillator at each half-oscillation of the oscillator in the stop mode.