Pivot, process for manufacturing such a pivot, oscillator comprising such a pivot, watch movement and timepiece comprising such an oscillator

The present invention concerns a pivot comprising two assemblies, namely a central assembly (401) and a peripheral assembly (400). These two assemblies are mobile in rotation relative to each other around an axis of rotation (A). The pivot is characterized in that the central assembly (401) is kinematically connected to the peripheral assembly (400) by at least three connecting rods (402, 403, 404), said connecting rods being each connected to an arm (405, 406, 407), the arms being connected to said peripheral assembly (400) so that the arm can pivot around a pivoting point (408, 409, 410). The connecting rods are connected to the arms in a location different from the pivoting point of said arm. Moreover, at least two pairs of arms are connected together by a coupling link (411, 412, 413) in a location different from the pivoting point of said arms. The invention further concerns a process for manufacturing such a pivot said process comprises a step of applying a stress to the material forming said flexure pivot, in order to tune the restoring torque of the flexure pivot. The invention concerns an oscillator comprising a pivot as described above, a watch movement comprising such an oscillator and a timepiece comprising such an oscillator.