Rotary resonator regulator mechanism with flexible guidance maintained by a free anchor escapement.

摘要

The subject of the invention is a timepiece control mechanism (300) comprising a free escapement mechanism (200) with an anchor (7), and a quality factor resonator (100) comprising an inertial element (2). comprising a pin (6) cooperating with a fork of the anchor (7), subjected to the return of two flexible blades (5) fixed to the plate (1), defining a virtual pivot of main axis (DP), the anchor (7) pivoting about a secondary axis (DS), and the resonator lifting angle (β), during which the pin (6) is in contact with the range, is less than 10 °, and the ratio IB / IA between the inertia IB of the inertial element (2) with respect to the main axis (DP), and the inertia IA of the anchor (7) with respect to the secondary axis (DS), is greater than 2Q.α 2 /(0.1.π.β 2), where α is the angle of lift of the anchor corresponding to the maximum angular travel of the range.