double shock - absorbing steering wheel , in particular for automobile vehicles , comprising a primary inertia mass connected to an engine shaft , a secondary inertia mass connected by clutch e to a gearbox bv , and a torsion damper rotatably connecting the two inertia masses , this torsion damper including an epicycloidal gear train whose outer crown wheel engages with a spring for absorption of vibrations and rotation acyclisms , said spring being mounted around the crown wheel in a fixed frame .