Actuator assembly

Abstract

An actuator assembly is disclosed. The actuator assembly comprises a support structure (2); a first movable part (10); a second movable part (12); an actuator arrangement configured to drive rotation of the first movable part around a primary axis (O) relative to the support structure; a first bearing arrangement (20, 21) configured to convert said rotation of the first movable part into helical movement of the first movable part around the primary axis relative to the support structure; a rotation control arrangement capable of limiting rotation of the second movable part around the primary axis relative to the support structure; and a second bearing arrangement (30, 31) configured such that, when the first movable part undergoes said helical movement and the second movable part undergoes said rotation limitation, the second movable part undergoes translational movement along the primary axis relative to the support structure and/or the first movable part.

Dependencies are inferred from the claim text.