ROTATIONAL ENERGY ABSORBER AND VEHICLE SEAT WITH A ROTATIONAL ENERGY ABSORBER OF THIS TYPE

A rotational energy absorber (5) for a vehicle seat comprises a rotation axis (11), an outer tube element (13) arranged centrally to the rotation axis (11), an inner tube element (12) arranged concentrically in the outer tube element (13), and at least one energy absorption element (15) for absorbing rotational energy, wherein the inner tube element (12) and the outer tube element (13) are rotatable relative to one another about the rotation axis (11).