Hospital bed construction with adjustable-height frame - has rectangular mattress base frame supported by corner legs, with drive transmission connecting motor to height adjustment rack

摘要

The bed has four upright support legs (3) located at each corner of the rectangular bed frame (2). Each leg includes a rack (4) which cooperates with a toothed drive wheel (5) mounted rotatably on the bed frame, and driven by a motor (6) attached to the frame. The longitudinal (7) and transverse (8) members of the bed frame are of hollow construction, and house mechanical transmission assemblies for transmitting drive from the motor to the toothed wheels. ADVANTAGE - Simple, reduced-effort adjustment of bed height, with compact concealed drive system.