AN AUTOMATICALLY ACTUATING ERGONOMIC SUPPORT SYSTEM FOR A FOLD DOWN SEAT

摘要

A fold down seat back (10) or seat bottom has at least one ergonomic support device (20, 60) in it. A traction cable (30) is operatively engagad at one end with the ergonomic support device to actuate it. The traction cable is comprised of a sleeve having a first end and a second end and a wire having a first end and a second end. The wire is disposed to slide axially through the sleeve. The first sleeve end is attached to one of the seat back or seat bottom, for example by a rotating cable tension unit (50). The wire end is attached to the other of the seat back or seat bottom, for example, by the fixed torsion bar (14). The wire end may be attached to the torsion rod with a pulley. These attachments of the sleeve end and the wire end cause the wire to be drawn axially through the sleeve when the seat back is folded up, extending or rotating an ergonomic support, and cause the wire to be relaxed when the seat back is folded down, flattening the ergonomic support. The ergonomic device may be a bolster (60, 260, 360), a wire array (20), a head rest (660), an arm rest (600), an arching pressure surface (370) or a scissors lumbar support (460, 470).