Shock-resistant protection provided with a viscous substance for a resonator mechanism with rotary flexible guide

A timepiece resonator mechanism (100), comprising:

• a structure (1);
• an anchoring block (30) from which is suspended at least one inertial element (2) arranged to oscillate according to a first rotational degree of freedom RZ about a pivot axis (D) extending in a first direction Z,
• said inertial element (2) being subjected to return forces exerted by a flexible pivot (200) including a plurality of substantially longitudinal elastic strips (3), each fixed, at a first end to said anchoring block (30), and at a second end to said inertial element (2), each said elastic strip (3) being deformable essentially in a plane XY perpendicular to said first direction Z,
• said anchoring block (30) being suspended from said structure (1) by a flexible suspension (300) arranged to allow mobility of said anchoring block (30);
• and
• 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.