Retractable bed base and bed including such a bed base

摘要

The base has adjustable parts (12-15) for back, head, posts and legs, pivotingly assembled around transversal pivoting axes (P1, P2). A driving unit (22) e.g. electric motor, has a common motor source in which the parts are connected by a hinge in a manner that inclination of the part (15) does not follow inclination of the part (14) and part (15) passes under a plane that is defined by an non-adjustable central part (11) for arranging the base in armchair position.