Nursing Bed Supporting Mechanism Based on Rigid Origami

Nursing beds can provide a place of rest for patients who are bedridden for long periods, and their enhanced comfort is receiving increasing attention. The property that the rigid origami mechanism can deploy a two-dimensional plane into a three-dimensional polyhedron provides a possible method for the optimization of nursing bed panels. Firstly, a design method of rigid origami patterns targeting a specific human body surface is introduced, and a set of origami patterns applied to the nursing bed backboard is proposed. Secondly, the relation between degree-4 origami vertex and spherical 4R linkages is introduced. Finally, the kinematic performance of the origami backboard is analyzed.