A locking assembly (10) for locking a component (1) on a rail (2) comprises a sliding means (12) and a locking means (14) connected by an engaging means (16), the said engaging means (16) has an angular profile movable along a variable rotational axis to convert the vertically exerted force on the slider (12) into a horizontal force on the locking means (14). The vertical movement of sliding means (12) causes one end of the angularly profiled engaging means (16) connected to the slider (12) to rotationally move the engaging means (16), thereby causing movement of the other end of the engaging means (16) connected to the locking means (14) into a locking or unlocking position.