Rotary resonator with flexible bearings maintained by a split lever escapement

摘要

The timer adjuster (300) comprises a resonator (100) having a quality factor Q, including a separation lever (7) an escapement mechanism (200), and an inertia element (2). Comprises a pushing pin (6) cooperating with a fork (8) of a lever (7), the inertia element (2) being adapted to return two flexible strips (5) mounted on a plate (1). Under force, the flexible strip (5) defines a virtual pivot with a main axis (DP), the lever (7) pivots about a second axis (DS) and a thrust pin ( The lifting angle (β) of the resonator while 6) contacts the fork (8) is less than 10 °, the inertia IB of the inertial element (2) with respect to the main axis (DP) and the inertia IB with respect to the second axis (DS). The ratio IB / IA between the lever (7) and the inertia IA is 2Q. α2 / (0.1.π.β2), where α is the lift angle of the lever corresponding to the maximum angular travel of the fork (8). [Selection diagram] FIG.