TW339269B - Power-assist chair - Google Patents

Abstract

A sort of power-assist chair, having: a bottom assembly; a cjhair frame supported by articulation on said bottom assembly; a rotary driving articulation in transverse extention between the corresponding sides of the chair frame; a foot step assembly supported by said chair frame and operationally attached to the foot step assembly of said driving axis corresponding to the rotation of the driving axis in the first direction to have the retraction move to an extended position; a chair assembly, having a seat element, a seat back and the swing lever in articulate association with the seat back and the seat element to the seat frame for horizontal movement between the first vertical position and a horizontal position; lift for operational association of the chair frame to the bottom assembly to raise and tilt the seat frame; to turn on the start of the lift having a driving element and the power operation device for the movement of the driving element; as well as a tilt control assembly for operational association with the seat frame to the bottom assembly as a tilt control assembly between the two elements, having the tilt control assembly the following: articulation associating the seat frame to the bottom assembly; and a lift lever being associated on a top position to the seating element and associated articulately in a lower position to the drive articulation; and a lift lever, having the first end be articulated to the lower end of the lift lever and a second end being operationally connected to the driving axis and the lift lever being further articulated to the articulation assembly, thus, the lift lever responding the rotation of the driving axis to drive the lift lever to have the seat frame be tilted upward with respect to the bottom assembly.