Armchair with extending foot rest has a servo driven parallelogram lever support to slide a cushion from under the seat into a forward and raised position

摘要

An armchair is fitted with an extending foot rest cushion (3) which is stored under the seat cushion (S) and which is pushed outwards by a servo drive and raised flush with the seat cushion by pairs of angled arms (1, 2) Each side of the chair. A support plate (8) slides in a horizontal guide (4) under the seat cushion and has the pairs of angled arms pivot mounted at the outer ends. The other ends of the angled arms are fitted to the sides of the foot rest. The parallelogram is completed by link arms (9) each side and the servo drive comprises a reversible motor (11) and a threaded drive (12). The angled arms swing the foot rest upwards into line with the seat cushion at the end of the servo drive.